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    • 专利摘要:
    BATTERY MANAGEMENT SYSTEM. It is a battery management system that is made up of one or more batteries. The system includes a display unit and a controller attached to the display unit and programmed to determine when a healthcare delivery system is attached to one or more batteries, to control the display unit to display an initial number that corresponds to a time remaining on the battery (TROB) when the health care delivery system is coupled to one or more batteries, to determine whether the TROB is within a reserve range that extends to a maximum reserve range, with the maximum reserve range is less than a maximum TROB, to change the TROB according to an operational state of the healthcare distribution system if the TROB is greater than the maximum reserve range and to decrease the TROB without considering the operational state of the health care delivery system if the TROB is less than the maximum reserve range.
    公开号:BR112013012085B1
    申请号:R112013012085-1
    申请日:2011-12-12
    公开日:2021-02-02
    发明作者:Ross G. Krogh；James P. Martucci；Jeffrey D. Kotecki；Miroslaw Grzeszykowski
    申请人:Baxter International Inc.；Baxter Healthcare S.A.；
    IPC主号:
    专利说明:

    BACKGROUND
    [0001] This patent addresses a battery management system and, in particular, a battery management system for use with a healthcare delivery system, such as a healthcare delivery system that includes an infusion pump and a pump controller.
    [0002] Therapy, or treatment, for a medical condition can be characterized in several different ways. For example, therapy can be discussed in terms of the agent used to cause a change in the patient's condition, such as medicine or radiation. As another example, therapy can be discussed in terms of the mode or route of administration.
    [0003] Infusion therapy - the intravenous delivery (ie, delivery in the vein) of therapy - is well known in the art. In its simplest form, infusion therapy can be performed using a container or bag connected to a patient via a drip chamber, an administration set and a catheter. In such a system and according to such a method, the fluid passes from the bag to the patient under the influence of gravity. In a more complex system, a pump or cuff can be used to control the flow of fluid to the patient.
    [0004] When a pump is used, conventionally, the pump is powered by the mains as the main supply. The mains supply will typically be used to supply not only the pump, but also a pump controller associated with the pump, whose pump controller can be programmed to provide individualized distribution of medical fluids from the container or bag to the patient. For example, the pump controller can be programmed to control the pump to provide a particular fluid flow rate.
    [0005] It is typically the case, too, that a battery power supply is provided to power the pump and the pump controller for a limited period of time. The battery power supply can be included to limit the possibility that a failure in the mains supply will result in an interruption of fluid distribution to the patient. The battery power supply can also be included to allow the pump and pump controller to be moved with the patient, during which time it may not be possible or practical to connect the pump and pump controller to the mains supply , for example, when transporting a patient for testing procedures, visits to the bathroom or prescribed ambulation to improve recovery. It is often the case that the transportation of critically ill patients requires very high safety of battery operation duration due to the life supportive nature of infusions to the patient. Failure to satisfy the battery operating duration in these situations can lead to life-threatening situations, as can be seen in the Manufacturer and User Facility Device Experience - MAUDE database. of the FDA.
    [0006] Since the battery power source is expected to have to supply only the pump and pump controller for a limited period of time before the pump and pump controller are re-coupled to the mains supply, these battery power supplies typically include one or more rechargeable batteries. When the pump and the pump controller are re-coupled to the mains supply, a charger can be activated to charge the batteries back to their full charge. An advantage of using rechargeable batteries is that it is not necessary for the healthcare provider to change the batteries after each discharge cycle so that the battery power source is at full charge for a subsequent discharge cycle.
    [0007] Although rechargeable batteries have a longer standby life than traditional non-rechargeable batteries, rechargeable batteries have an expected operational life, which can be estimated in terms of years and / or numbers of charge / discharge cycles. At some point, rechargeable batteries will need to be replaced. In addition, with the operating life of the rechargeable battery, the charge capacity of the battery will decrease.
    [0008] As presented in greater detail below, this presentation presents an improved assembly that incorporates advantageous alternatives to conventional devices and methods. In particular, this presentation addresses the significant unmet need in the area of battery management for portable devices that deliver critical therapies. SUMMARY
    [0009] In accordance with one aspect of the present presentation, a battery management system is provided to one or more batteries that are attachable to a healthcare delivery system, with one or more batteries being attached to the health care system. health care delivery when the health care delivery system is not coupled to an alternative power source. The system includes a display unit and a controller attached to the display unit and programmed to determine when the healthcare delivery system is attached to one or more batteries, to control the display unit to display an initial number that corresponds to a remaining battery time (TROB) when the healthcare delivery system is coupled to one or more batteries, to determine whether the TROB is within a reserve range that extends to a maximum reserve range, the maximum reserve range is less than a maximum TROB, to change the TROB according to an operational state of the healthcare distribution system if the TROB is greater than the maximum reserve range and to decrease the TROB without considering the operational state of the health care delivery system if the TROB is less than the maximum reserve range.
    [0010] According to another aspect of this presentation, a healthcare delivery system includes one or more batteries, a portable pump for use in the intravenous delivery of medical fluids, the portable pump being attachable to one or more batteries , a display unit, an input unit and a pump controller coupled to the portable pump, the display unit and the input unit, the pump controller being programmed to receive input from the input unit and control the pump portable to enter an operational state according to the input received. The health care delivery system also includes a display unit and a controller coupled to the display unit and programmed to determine when the health care delivery system is coupled to one or more batteries, to control the display unit for display a starting number that corresponds to a time remaining on the battery (TROB) when the healthcare delivery system is coupled to one or more batteries, to determine whether the TROB is within a reserve range that extends to a maximum reserve range, the maximum reserve range being less than a maximum TROB, to change the TROB according to an operational state of the healthcare distribution system if the TROB is greater than the maximum reserve range and decreases the TROB without considering the operational status of the health care delivery system if the TROB is less than the maximum reserve range. BRIEF DESCRIPTION OF THE DRAWINGS
    [0011] It is believed that the presentation will be better understood from the following description made in conjunction with the attached drawings. Some of the figures may have been simplified by omitting selected elements in order to show the other elements more clearly. Such omissions of elements in some figures are not necessarily indicative of the presence or absence of particular elements in any of the exemplary modalities, except when explicitly outlined in the corresponding written description. None of the drawings are necessarily to scale.
    [0012] Figure 1 is a schematic view of a healthcare delivery system and a battery management system in accordance with the present presentation;
    [0013] Figure 2 is a block diagram of the battery management system in Figure 1;
    [0014] Figure 3 is a flow chart of a discharge management method used by the battery management system according to Figure 2; and
    [0015] Figure 4 is a block diagram of a charging management method used by the battery management system according to Figure 2. DETAILED DESCRIPTION OF VARIOUS MODALITIES
    [0016] Although the following text presents a detailed description of the modalities of the invention, it should be understood that the legal scope of the invention is defined by the words in the claims presented at the end of this patent. The detailed description should be interpreted as an example only and does not describe all possible modalities of the invention since describing all possible modalities would not be practical, if not impossible. Numerous alternative modalities can be implemented, using current technology or technology developed after the filing date of this patent, which would still fall within the scope of the claims that define the invention.
    [0017] It should also be understood that, unless a term is expressly defined in this patent using the phrase “as used in this document, the term '' is hereby defined to mean ...” or a similar phrase, there is no intention to limit the meaning of that term, either expressly or by implication, beyond its common and simple meaning, and such term should not be interpreted to be limited in scope based on any statement made in any section of this patent (other than the language of the claims). Insofar as any term cited in the claims at the end of this patent is referred to in this patent in a manner consistent with a single meaning, this is done for the sake of clarity so as not to confuse the reader and it is not intended that such term be limited , by implication or otherwise, to that unique meaning. Finally, unless a claim element is defined by quoting the word "means" and a function without exposing any structure, it is not intended that the scope of any claim element be interpreted based on the application of 35 USC §112, sixth paragraph.
    [0018] Figure 1 illustrates a healthcare delivery system 50 according to the present presentation. The healthcare delivery system 50 can be coupled to an AC power supply 52 via a plug 54 or the healthcare delivery system 50 can be coupled to one or more batteries 56. For example, the healthcare delivery system 50 can be coupled to the mains supply 52 while the system 50 is stationary, for example, in a patient room. Alternatively, the healthcare delivery system 50 can be coupled to one or more batteries 56 when the system 50 is being moved with the patient or when a power source, such as the mains supply 52, is not available from otherwise (that is, when system 50 is not coupled to an alternative power source).
    [0019] Batteries 56 may be in the form of valve-regulated lead-acid batteries (such as # MD12020 provided by Yuasa). As a consequence, unlike batteries designed more recently that use the Smart Battery specification, the charge status and health status of batteries 56 are not readily determined by or available to the user of batteries 56. The lack of information regarding the Battery status 56 makes the calculation of the remaining charge more complicated, because information about the battery charge status is not readily available. Although the following system and method has particular advantages when used with such batteries, it will be recognized that the system and method can be used to advantage with other types of batteries as well.
    [0020] Associated with one or more batteries 56 is a battery management system 60. Although the battery management system 60 is illustrated in Figure 1 as being arranged in a common housing 62 with batteries 56, this is simply a modality according to the present presentation. For example, battery management system 60 can be placed in a separate housing from batteries 56 and then that subassembly can be connected or otherwise associated with batteries 56.
    [0021] As shown in Figures 1 and 2, battery management system 60 includes a display unit 64. In the illustrated embodiment, display unit 64 can be used by system 50 also to display information to the healthcare provider other than information related to batteries 56 or the battery management system 60. However, according to other modalities, the display unit 64 can be dedicated to the battery management system 60 and display only information related to the management system of battery 60.
    [0022] As also illustrated in Figure 2, the battery management system 60 includes a controller 66 coupled to the display unit 64. Controller 66 can include a processor 68, a memory 70 and an input and output interface 72. A memory 70 can be in the form of a read-only memory (ROM) and random access memory (RAM). ROM can take different forms, which include programmable and erasable ROM (EPROM) and electrically programmable and erasable ROM (EEPROM). In addition, to facilitate the illustration, interface 72 has been represented as an input and output interface. It should be recognized that the interface 72 can be in the form of separate devices, one dedicated to the input and the other dedicated to the output.
    [0023] Controller 66 is programmed to perform a battery management method in accordance with this presentation. In particular, controller 66 can be programmed to discharge and recharge batteries 56 for which only a limited amount of information regarding the state of charge and health status of batteries 56 may be available, although it will be recognized that it can be used for other situations as well. This method of discharging and recharging batteries 56 can operate according to a conservative modeling of the behavior of batteries 56 and care with a health distribution device 50 (in particular, its power consumption), although it can operate without conservative modeling as well. In addition, this method can provide a value known in the present document as the time remaining in the battery (TROB), this value being directly associated with the passage of time as determined by a clock associated with controller 66 or a clock function performed by controller 66 Accordingly, the TROB can be referred to as deterministic, in which it uses the passage of time and associates the passage of time as measured by the watch with the battery's ability to achieve a particular operational state for a particular amount of time; this can be contrasted with existing systems that use a detected battery parameter (such as voltage) to provide an estimate of battery life. In addition, the discharge and recharge method can seek to strictly encourage user behavior so that batteries 56 can be discharged and recharged in a way that a high confidence (for example, in excess of 90% and according to certain modalities, in excess of 95%) can be maintained when providing the user with a visual indication of the TROB in terms of time units, such as hours, minutes or even seconds. Thus, it must be recognized that TROB can be used in conjunction with conservative modeling according to certain modalities and separately from conservative modeling according to other modalities.
    [0024] That is, according to conventional health care delivery devices that incorporate battery management, an indicator can be provided to the user of the health care delivery device to indicate that one of the three situations exists, such as lights green, yellow and red. These three states can be determined according to a voltage level detected by the batteries when the healthcare delivery system 50 is being powered by the batteries. Although the user may thus be able to differentiate a distribution device with fully charged batteries from a distribution device with fully or partially discharged batteries, such a system does not allow the user to determine with any degree of confidence the amount of time that the Health care delivery device can be operated using associated batteries. In fact, because the conventional method uses detected voltages and because the voltages depend on the distribution rate for the associated healthcare delivery system (for example, a flow rate at which the system includes a single channel or multiple pump) channels), battery temperature, and the number of charge / discharge cycles already performed by the battery, the time when multiple warning signals are provided may vary over the life of the battery. Under such conditions, it may not be possible to determine whether the remaining power would allow movement of the patient and the associated healthcare delivery system (for example, a pump and a pump controller) from the patient's room to another area of the facility. health care, for example, for the administration of medical testing, during which time the health care distribution system would have to operate using the associated batteries.
    [0025] For this purpose, the battery management system 60 (and, in particular, the controller 66) is programmed to make the screen provide visual indication of the TROB on a screen, so that the user can be able to compare the TROB with the time required to transport a patient, for example, and determine whether transport can be undertaken with existing equipment or whether other equipment is needed. Furthermore, the battery management system 60 can use a method that makes the user use the batteries in a way that avoids the behavior that would stress the batteries 56 to a point where the TROB displayed to the user with which it could not be used. count on a high confidence.
    [0026] According to certain modalities of the present presentation, then, a controller 66 can be programmed to execute a method that can include the following actions, although, as explained below, the method can include other actions as well. In particular, controller 66 can be programmed to determine when the healthcare delivery system is coupled to one or more batteries, to control the display unit to display a starting number that corresponds to a TROB when the healthcare delivery system health care is coupled to one or more batteries, the TROB being determined according to conservative modeling of the one or more batteries and the system, and to determine whether the TROB is within a reserve range that extends to the a maximum reserve range, the maximum reserve range being less than a maximum TROB. Controller 66 can also be programmed to change the TROB according to an operational state of the healthcare delivery system if the TROB is greater than the maximum reserve range, and to decrease the TROB without considering the operating state of the distribution system. health care if the TROB is less than the maximum reserve range.
    [0027] When discharging the batteries according to a conservative model, in particular one that is conservative in relation to the cyclical functioning of the battery (in number of cycles), the discharge temperature and discharge voltage, the system 60 can supply one or more of the following benefits. For example, conservative modeling can assist in providing a TROB with high confidence. In addition, by limiting the discharge voltage, possible damage to the batteries can be avoided, or at least limited, compared to a system 60 that allows batteries 56 to be discharged to the point permitted by conventional systems.
    [0028] Furthermore, the battery management system 60 may also include the charger unit 80 coupled to the controller 66 and attachable to one or more batteries 56. The controller 66 can also be programmed to activate the charger when the care system health is connected to the mains voltage to charge one or more batteries and increase the TROB through a first addition or up to the maximum TROB according to a state of recharge of one or more batteries.
    [0029] When performing the loading (or reloading, as the two terms will be used interchangeably in this document unless the context suggests otherwise) that provides a limited number of discrete increases in the TROB, system 60 can provide a or more of the following benefits. A limited number of increases, or allowances, for the TROB can facilitate the association of a high confidence with each phase of the reloading process. By providing only a limited number of allowances, the system can also limit the user's ability to continuously discharge and recharge batteries, because the user will not be able to accurately estimate the TROB except for the limited number of discrete allowances allowed by the system 60 Thus, this method encourages the user not to use batteries 56 in a range of charge / discharge operation where the resulting charge currents during recharging are high. Instead, the user is encouraged to keep the health care distribution system coupled with the supply of power whenever possible. In fact, it is believed that when combined with limiting the battery discharge voltage that results from the use of conservative modeling, limiting the use of high-charge currents can reduce battery damage by a significant amount, for example, by 75 %.
    [0030] Having explained then the health care distribution system 50, the battery management system 60, its interaction and the operation of the battery management system 60 in general terms, a more particular discussion of the structure and operation of the modality illustrated of systems 50 and 60 is now described, with reference to Figures 1 and 2 and Figures 3 and 4 as well. In particular, Figure 3 illustrates an embodiment of a method 150 for managing the discharge of one or more batteries 56 associated with system 50, while Figure 4 illustrates an embodiment of a method 250 for managing the charging of one or more batteries 56.
    [0031] Method 150 begins at block 152 with the determination by controller 66 that the healthcare distribution system 50 is coupled to batteries 56. Controller 66 then makes an initial determination at block 154 if the TROB is equal to a minimum TROB. According to certain modalities, the minimum TROB can be zero minutes. According to other modalities, the minimum TROB can be adjusted to an amount that is not zero. However, if the determination is made in block 154 that the TROB is equal to the minimum TROB in block 154, the method proceeds to blocks 158 and 160, where controller 66 activates an audible alarm 82 to notify the user that the TROB is equal to the minimum TROB and controls screen 64 to display a visual alarm message to notify the user that the TROB is equal to the minimum TROB. Controller 66 can operate according to blocks 156 and 158 (which can be carried out at the same time, instead of in series as illustrated) for a period of time, which can be adjusted or determined in advance, for example, 10 seconds. After the period of time has passed, controller 66 can cause the healthcare delivery system 50 to shut down or reduce power consumption.
    [0032] If controller 66 determines, instead, that the TROB is not equal to the minimum TROB in block 154, controller 66 may perform one or more determinations in which the TROB is compared with one or more ranges or boundary values. Once controller 66 has made the determination, controller 66 can allow (or limit) the ability to change system 50 between different operating states to cause a change in the TROB, can cause a visual or audible alert to be provided to the user or even cause the system 50 to shut down or reduce power consumption. Although the modality of the method illustrated in Figure 3 can provide four such boundary and range determinations, it should be noted that not every modality in accordance with the present presentation will include each determination.
    [0033] For example, controller 66 that operates according to method 150 will allow changes in the operating states of system 50 to affect the TROB if the TROB is greater than a maximum value adjusted for a particular range of values, which can be referred to , in this document, as the reserve band. Above this range (or above this limit value, the maximum reserve range), method 150 can make additional determinations that dictate the nature of the information displayed or that affect other characteristics of system operation 50, but the battery management system 60 will change the TROB according to an operating status of system 50. Similarly, within that range (or below the maximum reserve range), method 150 can make additional determinations that dictate the alerts offered or the information displayed, but the system battery management 60 will increase the TROB without considering the operational state of the healthcare delivery system. However, although the illustrated modality can provide multiple borderline determinations, a single borderline determination can be made, instead, in relation to the reserve range according to other modalities.
    [0034] According to certain modalities of system 60 according to the present presentation, the TROB is determined with reference to one or more equations that report an effective battery capacity, a projected TROB (or PTROB) and the maximum reserve range with one or more tables that are the product of conservative modeling of batteries 56 and system 50. For example, controller 66 can be programmed to determine an effective battery capacity (in percent) every second according to the following equation ( Equation 1): CAP = CAP - PCF * (1/3600), where CAP is the effective battery capacity (with an excess of the amount required to provide the reserve range capacity); and PCF is an effective power consumption factor.
    [0035] The effective capacity is initially set to equal to 100% for a fully charged battery. The effective power consumption factor is determined based on the conservative modeling for the batteries 56 and the healthcare distribution system 50. Although the effective power consumption factor can be represented in several ways, the factor is provided in accordance with table according to certain modalities, with a different factor being determined for each of a limited number of distribution ranges. For example, when system 50 is an infusion pump and the pump controller, the following table can be used for a single channel pump:


    [0036] Alternatively, the following table can be used for a multi-channel pump:

    [0037] In the preparation of this table, the modeling includes the following assumptions regarding the operation of batteries 56 and system 50, in which the power consumption was maximized while the battery capacity was minimized: 1. It was assumed that a temperature conventionally low environment (15 ° C) maximized consumption; 2. It was assumed that a conventionally low operating temperature for the battery (38 ° C) minimized the capacity; 3. It was assumed that a conventionally high number of charge / discharge cycles (for example, 50 to 70) minimized capacity; 4. It was assumed that the highest flow rate in each band maximized consumption; and 5. It was assumed that the charge / discharge cycle with a final discharge voltage of 11 V minimized the capacity.
    [0038] In addition, modeling assumed that adequate battery capacity would be reserved to provide system 50 operation during the time period previously referred to as the reserve range. For this period, additional assumptions have been made to maximize consumption, which include: 1. All channels (in the case of multiple channels) operating at the highest (flow) rate of distribution; and 2. Display unit 64 operating at 50% backlight (normally assumed to be operating at 10% backlight).
    [0039] Based on the knowledge of the effective battery capacity (CAP), a current TROB can be determined using the following equation (Equation 2): CTROB = PTROB * CAP + RRM, where CTROB is the current TROB; PTROB is a projected TROB obtained from the tables provided above, according to the distribution rate (for example, flow rate) provided, then, by system 50; CAP is the effective battery capacity; and RRM is the maximum reserve range (in this case, 30 minutes).
    [0040] Supposing, then, that controller 66 determines in block 154 that the TROB is not equal to the minimum TROB (for example, zero minutes), then method 150 can continue in block 162, where controller 66 determines whether the TROB exceeds a first borderline quantity. If the TROB exceeds this first boundary quantity, then method 150 proceeds to block 164 and controller 66 causes display unit 64 to display a warning to the user that system 50 is operating on battery power. This can also be accompanied by an audible alert according to certain modalities. Method 150 then proceeds to block 166 where controller 66 causes display unit 64 to provide a numerical visual indication of the number of hours of battery life remaining. Although this visual indicator can be reduced every second or minute, controller 66 can determine, instead, that the indicator should only be changed once an hour.
    [0041] After performing block 166, controller 66 programmed according to method 150 can make a determination in block 168 as to whether system 50 has received a user input that represents a decision to change the operational state of system 50. For For example, when system 50 is a medical fluid delivery system that includes a pump and a pump controller, the user can enter a new infusion program with a higher or lower infusion rate than that currently provided by the system. 50. If it is determined in block 168 that the input was received, system 60 can receive data related to the change of operational state in block 170 and can change the TROB in accordance with the change of operational state in block 172. That is, if a change to a higher flow rate is programmed, so the TROB can be decreased, while a change to a lower flow rate can result in an increase in the TROB.
    [0042] On the other hand, if controller 66 determines in block 162 that the TROB is less than the first boundary quantity (for example, one hour), then controller 66 determines in block 174 whether the TROB is less than a second quantity borderline, in particular the maximum reserve range. As an example, the maximum reserve range can be adjusted in thirty minutes. If the controller determines that the TROB is not less than the maximum reserve range, controller 66 remains at block 176.
    [0043] In block 176, controller 66 causes display unit 64 to display a visual warning to the user that system 50 has entered a limited battery power range (for example, TROB between one hour and thirty minutes ). This can also be accompanied by an audible alert according to certain modalities. Method 150 then proceeds to block 178 where controller 66 causes display unit 64 to provide a numerical visual indication of the number of hours of battery life remaining (e.g., one hour). Although this visual indicator can be reduced every second or minute, controller 66 can determine, instead, that the indicator should be displayed only once.
    [0044] After executing block 178, controller 66 programmed according to method 150 can make a determination in block 180 as to whether system 50 has received a user input that represents a decision to change the operating state of system 50, similar to block 168. If the determination is made in block 180 that the input was received, system 60 can receive data regarding the change of operational state in block 182 and can change the TROB that corresponds to the change of operational state in block 184.
    [0045] Continuing, if controller 66 determines in block 174 that the TROB is less than the maximum reserve range, then method 150 continues in block 186, in which a determination is made with reference to a third boundary quantity (for example , five minutes). This comparison is made to allow progression in phases of user alerts; according to alternative modalities, it may not be desirable or necessary to make a third borderline comparison or the fourth subsequent comparison illustrated as well. However, to provide the user with a progression in warning phases to limit the chances of surprise, multiple limits can be established.
    [0046] If the controller determines in block 186 that the TROB is within the range of five to thirty minutes, then method 150 continues in block 188, where controller 66 causes display unit 64 to display a visual warning to the user that the system 50 has entered a low battery power range (for example, the TROB between five minutes and thirty minutes). This can also be accompanied by an audible alert according to certain modalities. Method 150 then proceeds to block 190 where controller 66 causes display unit 64 to provide a numerical visual indication of the number of minutes of battery life remaining (e.g., thirty minutes). Although this visual indicator can be reduced every minute, controller 66 can determine, instead, that the indicator should be displayed only in increments of five minutes.
    [0047] After the completion of block 190, controller 66 programmed according to method 150 can make a determination in block 192 as to whether system 50 has received a user input that represents a decision to change the operational state of system 50, similar to block 168. If the determination is made in block 192 that the input was received, system 60 can still receive data regarding the change in operational status in block 194. However, because the health care delivery system 50 is operating in the reserve range, controller 66 will not change the TROB that corresponds to changing the operational state in block 196. Instead, controller 66 continues to reduce the TROB without considering the operational state of the care delivery system. health. Controller 66 will continue to provide the TROB to the user that does not concern the operational status of the healthcare delivery system 50 while the TROB is within the reserve range.
    [0048] If it is determined that the TROB is less than the third limit in block 186, method 150 continues to determine against a fourth limit in block 198. At that point, controller 66 determines whether the TROB is greater than a range minimum reserve, which can be adjusted to be zero minutes as illustrated. If the TROB is greater than the minimum reserve range, then method 150 continues at block 200.
    [0049] In block 200, controller 66 causes display unit 64 to display a visual warning to the user that system 50 has entered an exhausted battery range (for example, the TROB between zero minutes and five minutes). This can be accompanied by an audible alert according to certain modalities. Method 150 then proceeds to block 202 where controller 66 causes display unit 64 to provide a numerical visual indication of the number of minutes of battery life remaining (e.g., five minutes). Although this visual indicator can be reduced by less than a minute, such as seconds, controller 66 can determine, instead, that the indicator should be displayed only in increments of one minute.
    [0050] After the completion of block 202, controller 66 programmed according to method 150 can make a determination in block 204 as to whether system 50 has received a user input that represents a decision to change the operational state of system 50, similar to block 168. If it is determined in block 192 that the input was received, system 60 can still receive data regarding the change of operational status in block 206. However, because the health care delivery system 50 is operating in the reserve range, controller 66 will not change the TROB that corresponds to the operating state change in block 208. Instead, controller 66 continues to reduce the TROB without considering the operational state of the healthcare distribution system. health. Controller 66 will continue to provide the TROB to the user that does not concern the operational status of the healthcare delivery system 50 while the TROB is in the reserve range.
    [0051] Method 150 continues in block 210 when it is determined in block 198 that the minimum inverse range is satisfied (for example, the TROB is equal to zero minutes). In such a case, controller 66 can simply start to shut down or reduce the power consumption of the healthcare distribution system 50. However, according to the illustrated embodiment, controller 66 that operates according to method 150 can be programmed, instead, to provide a five-minute end period before the final power reduction of the healthcare delivery system 50.
    [0052] Accordingly, controller 66 would control display unit 64 to display a visual warning to the user that system 50 has entered a deactivation period (for example, the TROB has reached zero minutes). This can also be accompanied by an audible alert according to certain modalities. Controller 66 can also cause display unit 64 to provide a numerical visual indication of the number of minutes of battery life remaining (e.g., five minutes). Although this visual indicator can be reduced by less than a minute, controller 66 can determine that the indicator should only be displayed in increments of one minute. Controller 66 can also interrupt any infusion running in block 214.
    [0053] Controller 66 programmed according to method 150 can then make a determination in block 216 on whether system 50 has received a user input that represents a decision to change the operational state of system 50, similar to block 168 If it is determined in block 216 that the input was received, system 60 can still receive data regarding the change of operational status in block 218. However, because the healthcare delivery system 50 is operating in the deactivation range , controller 66 prevents system 50 from executing the scheduled change. Instead, controller 66 continues to reduce the TROB without considering the operational status of the healthcare delivery system and prohibits the operation of the healthcare delivery system 50. Controller 66 will continue to provide the TROB to the user which does not concern the operational status of the health care delivery system 50 while the TROB is in the deactivation range.
    [0054] Once controller 66 determines that the end of the deactivation range has been reached (for example, five minutes have passed) in block 222, controller 66 proceeds to shut down the healthcare delivery system 50 in block 224.
    [0055] Turning then to Figure 4, method 250 for charging batteries 56 begins at block 252. At block 252, controller 66 determines whether health care delivery system 50 is being powered using the supply of electrical network. If controller 66 determines that the healthcare delivery system 50 is not being supplied by a mains supply (for example, system 50 is attached to batteries 56 or the batteries are discharged and system 50 is turned off), then the controller 66 does not proceed with method 250. However, if controller 66 determines that system 50 is coupled to the mains supply, then controller 66 programmed according to method 250 proceeds to block 254.
    [0056] In block 254, controller 66 determines whether the TROB is greater than the maximum reserve range (for example, thirty minutes). If the TROB is not greater than the maximum reserve range, then method 250 continues at block 256; if so, then method 250 remains at block 258.
    [0057] Then proceeding to block 256, as a first precaution, controller 66 determines in block 256 whether the battery voltage 56 has dropped below 11 V. If it has fallen, then controller 66 will not change the TROB until it is determined in block 258 that the battery is fully charged. Until then, even if batteries 56 are still charging using charger 80, display unit 64 will not change according to the battery charging status 56. If controller 66 determines in block 256 that voltage 56 has not dropped below 11 V, then method 250 continues at block 260.
    [0058] As a second precaution, controller 66 determines in block 260 whether charger 80 has been coupled to the mains supply for more than a continuous boundary period of time, for example, thirty consecutive minutes. If charger 80 has not been connected to the mains for more than thirty consecutive minutes, method 250 does not continue on block 262, where a determination is made as to whether the charge current passing through batteries 56 is below a first current limit . In fact, if charger 80 is decoupled from the mains supply before thirty consecutive minutes have passed, controller 66 can restart charging method 250 in block 252 when it detects that charger 80 has been re-coupled to the mains supply . When controller 66 determines that charger 80 has been connected to the mains for more than thirty minutes, then the method proceeds to block 262.
    [0059] In block 262, controller 66 determines whether the load current is below a first current limit. The first current limit represents a first charge condition on batteries 56. Method 250 does not continue until the charge current through batteries 56 falls below the first current limit. Once the load current falls below the first current limit, controller 56 controls display unit 64 in block 264 to display one or more numerical representations of a first charge amount, which can be equal to the maximum reserve range according to certain modalities that include the modality illustrated in Figure 4. Method 250 then continues in block 258.
    [0060] Controller 66 determines whether the charging current is below a second current limit on block 258. The second current limit represents a second charge condition on batteries 56. According to the illustrated embodiment, the second charging condition charge may correspond to the full charge condition of the batteries 56, although this need not be the case according to other modalities. Once the charge current falls below the second charge condition, then method 250 continues at block 266 and controller 56 controls display unit 64 at block 266 to display one or more numerical representations of a second charge amount, which can be equal to the full charge condition according to certain modes including the mode illustrated in Figure 4. Controller 66 programmed according to method 250 can then adjust the effective battery capacity to 100%.
    [0061] In addition, system 60 and methods 150 and 250 can provide such advantages as detailed above and other advantages.
    权利要求:
    Claims (13)
    [0001]
    1. Battery management system (60) for one or more batteries (56) that can be connected to a healthcare delivery system (50), with one or more batteries being attached to the healthcare delivery system when the system is not coupled to an alternative power source, the system comprises: a display unit (64); a controller (66) coupled to the display unit (64) and characterized by the fact that the controller is configured: to determine when the healthcare delivery system (50) is coupled to one or more batteries (56), check the display unit (64) for displaying an initial number that corresponds to a time remaining on the battery (TROB) when the healthcare delivery system (50) is coupled to one or more batteries (56), where the TROB is determined according to a conservative modeling of the one or more batteries (56) and the system (50), the conservative modeling assuming maximized power consumption and minimized battery capacity, to determine whether the TROB is within a reserve range that extends to a maximum reserve range, the maximum reserve range being less than a maximum TROB, to change the TROB according to an operational state of the healthcare delivery system (50) if the TROB is greater than the band the maximum reserve, and decrease the TROB without considering the operational status of the health care delivery system (50) if the TROB is less than the maximum reserve range.
    [0002]
    2. System, according to claim 1, characterized by the fact that the TROB, the maximum TROB and the reserve range estimate are based on modeled behavior of one or more batteries (56) and the health care distribution system health (50).
    [0003]
    3. System according to any one of claims 1 to 2, characterized by the fact that the TROB is based on the energy capacity of one or more batteries depending on the cyclical functioning of the battery and the final discharge voltage of one or more batteries (56).
    [0004]
    4. System according to any one of claims 1 to 3, characterized by the fact that the reserve range is based on the energy capacity of one or more batteries (56) depending on the cyclic operation of the battery, the temperature of the battery and the final discharge voltage of one or more batteries (56) and an extreme operating life of the healthcare distribution system (50).
    [0005]
    5. System according to any one of claims 1 to 4, characterized by the fact that the controller (66) is configured to, if the TROB is greater than the maximum reserve range: determine a first TROB designed according to a first operational status of the health care delivery system (50); determine whether the health care delivery system (50) has changed from the first operational state to a second operational state; and determining a second TROB designed according to the second operational state of the healthcare delivery system (50).
    [0006]
    6. System according to claim 5, characterized by the fact that the controller (66) is configured to add the maximum reserve range to the first projected TROB or the second projected TROB to determine the TROB.
    [0007]
    7. System according to claim 5, characterized by the fact that the controller (66) is configured to determine the first TROB designed according to an effective battery capacity and a first projection of battery life and to determine the second TROB designed according to the effective battery capacity and a second projection of battery life.
    [0008]
    System according to any one of claims 1 to 7, characterized in that the system (60) additionally comprises a charger unit (80) attachable to one or more batteries (56), the controller (66 ) is attached to the charger unit (80) and further configured to: activate the charger (80) when the healthcare system (50) is connected to a mains voltage to charge one or more batteries (56) , and increase the TROB through a first addition or even the maximum TROB according to the state of recharge of one or more batteries (56).
    [0009]
    9. System according to claim 8, characterized by the fact that the state of recharge depends on a charging current through one or more batteries (56).
    [0010]
    10. System, according to claim 8, characterized by the fact that the TROB is increased by a first addition according to a first state of charge associated with a first measurement of electric charge and the TROB is increased to the maximum TROB of according to a second charge state associated with a second charge current measurement, the second charge current measurement being less than the first charge current measurement.
    [0011]
    System according to claim 8, further characterized by comprising a charger unit (80) that can be connected to one or more batteries, the controller (66) being coupled to the charger unit (80) and further configured to: activate the charger (80) when the health care system (50) is connected to a mains voltage to charge one or more batteries (56), and increase the TROB through a first addition, through a second increase or even the maximum TROB according to the state of recharge of one or more batteries (56).
    [0012]
    12. Health care delivery system (50) comprising: one or more batteries (56); a portable pump for use in the intravenous delivery of medical fluids, the portable pump being attachable to one or more batteries (56); a display unit (64); an input unit; a pump controller coupled to the portable pump, the display unit (64) and the input unit, the pump controller being configured to receive input from the input unit and to control the portable pump to enter an operational state according to the input received; and characterized by a battery management system (60) comprising a charger (80) coupled to one or more batteries (56) and a controller (66) coupled to the display unit (64), where the controller (66) is configured to: determine when the handheld pump is attached to one or more batteries (56), control the display unit (64) to display an initial number that corresponds to a TROB when the handheld pump is attached to one or more batteries ( 56), in which the TROB is determined according to a conservative modeling of the one or more batteries (56) and the system, the conservative modeling assuming maximized power consumption and minimized battery capacity, to determine if the TROB is within a range reserve that extends to a maximum reserve range, with the maximum reserve range being less than a maximum TROB, change the TROB according to an operational state of the healthcare distribution system if the TROB is greater than the range of maximum reserve, decrease the TROB without considering the operational status of the healthcare distribution system if the TROB is less than the maximum reserve range, activate the charger (80) when the portable pump is connected to the mains voltage to charge the one or more batteries (56), and increase the TROB through a first addition or up to the maximum TROB according to the state of charge of one or more batteries (56).
    [0013]
    13. Health care delivery system according to claim 12, characterized in that the battery management system (60) is of the type as defined in any of claims 2 to 10.
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    法律状态:
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-09-17| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-07-28| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2020-11-17| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-02-02| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 12/12/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US42252410P| true| 2010-12-13|2010-12-13|
    US61/422,524|2010-12-13|
    PCT/US2011/064374|WO2012082599A2|2010-12-13|2011-12-12|Battery management system|
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