• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The monitoring device of a power supply (2) is powered by this power supply. It comprises a battery (3) forming secondary power supply and which is triggered in case of disappearance of the primary power supply (2). A management circuit (5) controls the voltage (Vbatt) across the battery (3). A comparator (7) compares the measured voltage across the battery (3) with first and second threshold values. A management circuit (5) controls the passage of a discharge current (Id) across the battery (3), by means of a switch (10) and a counter configured to count a magnitude representative of the current discharge (Id). The management circuit (5) can warn the user that the battery is faulty depending on the value of the counter.
    公开号:FR3018922A1
    申请号:FR1400711
    申请日:2014-03-24
    公开日:2015-09-25
    发明作者:Joel Sorin；Bertrand Masseboeuf
    申请人:Schneider Electric Industries SAS；
    IPC主号:
    专利说明:

    [0001] TECHNICAL FIELD OF THE INVENTION The invention relates to a device for monitoring a power supply and comprising main and secondary power supplies. The invention also relates to a method of managing the discharge of a battery securing the power supply of a monitoring device. STATE OF THE ART The primary power supply of a control circuit can be interrupted in certain accidental cases. It is interesting to know the state of the control circuit or data present in the control circuit during its stop for power failure. In order to store some interesting data, the control circuit has an information storage circuit.
    [0002] To ensure the operation of the storage circuit before and after the disappearance of the primary power supply, a secondary electrical source is connected to the storage circuit which provides the electrical power necessary for the proper operation of the storage circuit.
    [0003] Traditionally, this secondary electrical source is an electric battery, which must be permanently ready to supply the control circuit.
    [0004] Document US5224011 discloses a system where a battery is used to save information in an electrical circuit in case of loss of the main power supply.
    [0005] The document US5089928 uses a backup battery to operate an LCD screen after the main power supply of the system has been cut off. The battery is activated manually. However, the life of the battery is limited which requires monitoring the state of the battery to signal its end of life. There are some documents that address this problem. By way of example, the document EP0279692 describes a system using an electric battery to ensure the operation of a control circuit. The state of the battery is manually checked by the activation of a test circuit having an LED which indicates the voltage measured at the terminals of the battery. During the waiting period, one of the terminals and / or one of the internal electrodes of the battery can oxidize. It is then interesting to carry out a deoxidation action to find an operational battery. In the case where the terminals of the battery are passivated, the document US6118251, describes a method of depassivating an electric battery by sequences of electrical pulses. The document EP0444023 describes a system for depassivating an electric battery by controlling the power delivered by the battery until the salt crystals are dissipated on an electrode and the return of the power or the flow of a maximum duration .
    [0006] The document EP0891000 describes a method for checking the state of an electric battery before its use and allows the depassivation of the battery as well as a calculation of the remaining life of the battery.
    [0007] OBJECT OF THE INVENTION The object of the invention is to provide a monitoring device having a secondary power supply and which offers a better quality of service, in particular during the detection of an anomaly.
    [0008] The device for monitoring a power supply comprising: a series of first terminals intended to be connected to a primary power supply, a battery connected to supply the monitoring device as a secondary power supply, in the event of the disappearance of the primary power supply, measuring means configured to measure the voltage at the terminals of the battery, - a management circuit for detecting a battery failure, - a comparator configured to compare the voltage measured by the measuring means with first and second threshold values, an output of the comparator being coupled to the management circuit, a switch configured to block / allow the passage of a discharge current across the battery, a counter configured to count a magnitude representative of the discharge current, an output of the counter being coupled to the management circuit, wherein the management circuit is configured to the state of the switch depends on the comparison of the measured voltage with the first and second threshold values and on the value of the meter. The object of the invention is also to provide a method of managing the discharge. a battery in a monitoring device that is easy to implement while ensuring a reliable and repeatable achievement for industrial integration.
    [0009] The method for managing the discharge of a power supply, characterized in that it comprises the following steps: providing a device for monitoring a power supply provided with: a first series of terminals intended to be connected to a power supply primary electric circuit, o a storage circuit configured to record indicators related to the measured electrical quantities of the power supply, o a battery connected to supply at least a portion of the storage circuit in the event of the disappearance of the power supply primary electrical meter, o measuring means configured to measure the voltage at the terminals of the battery, o a management circuit connected to the measuring means and configured to detect a battery failure, detect the presence of the battery, measure the voltage at the terminals of the battery, battery terminals, compare the voltage measured across the battery to first and second values it, apply a discharge current to the terminals of the battery if the measured voltage is between the first and second threshold values. Other advantages and features will become more clearly apparent from the following description of particular embodiments of the invention given by way of nonlimiting example and represented in the accompanying drawings, in which: FIGS. show schematically two embodiments of a monitoring device, FIG. 2 represents a flowchart of the steps for the management of the state of the battery, FIG. 3 represents the instants and the cycles controlling the evolution of the battery. current emitted by the battery as part of a method of managing the discharge of the battery, Figure 4 shows examples of the time evolution of the voltage measured on the terminals of the battery.
    [0010] DETAILED DESCRIPTION FIG. 1a illustrates a monitoring device 1, for example a circuit breaker, configured to monitor one or more power supply lines. The monitoring device 1 is intended to be connected to the power supply lines and configured to measure the electrical characteristics of the lines, for example the voltage present on the line and / or the current flowing in the power line. In the case of a circuit-breaker, the cut-off of the monitored supply line may occur if an anomaly is detected.
    [0011] The monitoring device 1 has a series of power supply terminals for connection to a primary power source 2. The primary power source is the main power source, i.e. supplies mainly or primarily the various components of the monitoring device 1.
    [0012] In order to overcome a deficiency of the primary power source 2, the monitoring device 1 comprises a secondary power source 3 which is formed by a battery. The battery 3 has two contacts 3a which connect the battery 3 to the elements of the monitoring device 1. The battery 3 is configured to supply at least a portion of the monitoring device and preferably only part of the monitoring device. Advantageously, all the electronic circuits or only part of the electronic circuits of the monitoring device 1 are powered by the battery 3 in order to maintain a significant autonomy in the event of the disappearance of the main power supply 2. In a particular embodiment, the monitoring device 1 comprises a storage circuit 4 which records indicators related to the measured electrical quantities. Advantageously, the battery 3 supplies at least the storage circuit 4. In the case of a circuit breaker, the storage circuit 4 preferably records indicators related to the causes of tripping of the circuit breaker.
    [0013] By battery 3 is meant an electrochemical device that converts chemical energy into electrical energy through a redox chemical reaction. The battery may be non-rechargeable and carry the name of battery or electric battery. In other embodiments, the battery can be rechargeable. The secondary power source 3 is placed in the monitoring device 1 so as to avoid the introduction of a new series of supply lines dissociated from the first series of supply lines.
    [0014] In this way, it is possible to have a monitoring device 1 which is compact and which ensures a quasi-permanent operation.
    [0015] Since the monitoring device 1 can be placed in aggressive environments, it is advantageous to have a secondary power source 3 which is also able to withstand such conditions. In an advantageous embodiment, the monitoring device 1 is configured so that the primary power source 2 is the power line to be monitored or is connected to the power supply line to be monitored.
    [0016] The power line to be monitored is intended to power one or more other electrical loads. If the monitoring device 1 discovers an anomaly on the power line, it will cause the disconnection of the line which will result in the disappearance of the primary power source 2.
    [0017] Thus, in this configuration, when the power supply line to be monitored is stopped, the main power supply 2 is missing and it is necessary to switch to the secondary power supply 3.
    [0018] In the embodiment shown in FIG. 1a, the monitoring device 1 advantageously comprises a control circuit A which is configured to analyze the supply line to be monitored, for example by means of a microcontroller. The storage circuit 4 is coupled to the control circuit. In the embodiment illustrated in FIG. 1, the storage circuit 4 is part of the control circuit A. Preferably, the control circuit A or a part of the control circuit (in particular the storage circuit 4) is powered by the battery 3 in case of failure of the main power supply 2.30 The monitoring device 1 further comprises a management circuit 5 configured to analyze the state of the battery 3 and particularly to detect a possible failure of the battery 3.
    [0019] The use of a management circuit 5 which verifies the state of the battery 3 makes it possible to know, in the course of time, whether the secondary power source 3 is able to supply the control circuit and therefore of ensure the proper functioning of the monitoring device 1.
    [0020] Measuring means 6 are configured to measure the voltage Vbat at the terminals of the battery 3. The measuring means 6 are connected to an input of a comparator 7 to provide it with information relating to the state of the battery 3, the average of the voltage Vbat. The comparator 7 is connected to the management circuit 5 so as to be able to transmit to it one or more signals. In the illustrated example, the management circuit 5, the comparator 7 and the storage device are formed in the control circuit A which is for example a microcontroller. The measuring means 6 can be configured to measure the voltage across the battery 3 periodically, period symbolized by Atm, in Figure 3, for example by means of a clock. It is also possible to measure the battery 3 on receipt of a measurement signal. The term measured voltage Vbat may represent the voltage at the terminals of the battery 3 or a quantity representative of this voltage.
    [0021] In a particular embodiment, the voltage across the battery Vbat is measured every 24h, that is to say, Atm = 24h. The comparator 7 is configured to compare the measured voltage Vbat with a first threshold VoFF and a second threshold Vmin. The second threshold Vmm is greater than the first threshold VoFF.
    [0022] The value of the second threshold Vrnin corresponds to a functional battery 3. Thus, if the measured voltage Vbat is greater than the second threshold value Vrnia, the comparator 7 sends a first piece of information representative of this comparison to the management circuit 5 and the battery 3 is considered as functional. The interval between the first threshold value VoFF and the second threshold value Vmin corresponds to a battery 3 possibly having a problem that can be corrected. Thus, if the measured voltage Vbat is within this range, the comparator 7 returns a second associated information to the management circuit 5. The value of the first threshold VoFF corresponds to a nonrecoverable defective battery 3. Thus, if the measured voltage Vbat is lower than the first threshold value VOFF, the comparator 7 emits a third piece of information representative of this comparison and the battery 3 is considered as defective by the management circuit 5. The battery 3 must, for example, to be replaced.
    [0023] If the management circuit 5 receives the first information, it can store this information in a memory. The first information may be a lack of signal. If the management circuit 5 receives the third information, it can warn the user that the battery 3 is defective and that its replacement is expected to maintain the operation of the monitoring device 1 in all its performance. The signaling of a faulty battery 3 can be achieved by means of a light indicator, for example by means of a light-emitting diode. It is also possible to use an electromagnetic wave or an electronic signal to inform the user of the failure of the battery 3. By way of example, the management circuit 5 indicates the end of life of the battery 3 by means of An output 8. If the management circuit 5 receives the second information, it initiates a test protocol to determine if the battery 3 is functional or defective. The management circuit 5 is coupled to an electric charge 9 configured to discharge the battery 3. Under these conditions, an electric current flows from the battery 3 to the electric charge 9 (through the terminals 3a of the battery 3). Thus, a partial discharge of the battery 3 is triggered when the measured voltage Vbat at the terminals 3a of the battery 3 is greater than the first threshold VOFF and lower than the second threshold Vmin- The discharge of the battery 3 is triggered by the management circuit 5 which defines the conditions of the discharge, for example the intensity of the current, the duration of the current, the quantity of electric charges transferred by the battery 3, the shape of the current in time (intensity as a function of time) and / or the number of repetitions of a discharge current defining a pattern. A discharge current Id is emitted from the battery 3, and the discharge current Id is configured to at least partially eliminate a passivation layer present on a terminal or one of the internal electrodes of the battery 3. By way of example, the Discharge current Id is in the form of several square-shaped pulses. In one embodiment, the management circuit 5 is connected to the control electrode of a switch 10. The switch 10 electrically connects the two terminals 3a of the battery 3 or connects one of the terminals 3a of the battery 3 to a reference potential 11 which is able to discharge the electrical charges. This embodiment is advantageous because it is compact and it makes it possible to easily control the passage of current from the battery 3. In a still more particular embodiment, the switch 10 is a transistor. The transistor 10 allows a discharge current Id to pass from the anode of the battery 3 to the reference potential 11 through the electric charge 9. The reference potential 11 is for example the ground. The use of a transistor 10 associated with the electric charge 9 allows for an extremely compact device while allowing a good control of the amount of current to be transited. The transistor 10 makes it possible to set the duration of passage of the current and the electric charge 9 makes it possible to fix the intensity of the current. The monitoring device 1 advantageously comprises a counter 12 which is configured for a magnitude representative of the passage of the electrons. By way of example, the monitoring device 1 advantageously comprises a counter 12 which is configured to measure the amount of current flowing through the terminals 3a of the battery 3 or to count the number of passages of a current flowing through the terminals 3a of the battery. 3. The counter 12 may be a counter which receives information from the management circuit 5 indicating the triggering of a discharge current Id. The counter 12 then records the number of iterations of application of the discharge current Id. counter 12 can also be a counter measuring the activation of the control electrode of the switch 10. The counter 12 can also be a device for measuring the current Id flowing through the battery 3.
    [0024] The recorded information is then an amount of electrons having passed through the terminals 3a of the battery 3. In a particular embodiment, the management circuit 5 is connected to the counter 12. The management circuit 5 is configured to signal the failure of the battery 3 if the second information is sent by the comparator 7 and if the counter 12 has a value greater than a critical value Nc. Under these conditions, it has been detected that the voltage Vbat at the terminals of the battery 3 is in the interval where the test protocol must be applied and the counter 12 indicates that the test protocol has already been applied several times. It therefore seems that the voltage drop is not related to a passivation layer or that the passage of a current across the battery 3 is not sufficient to break the passivation layer. The emission of a failure signal makes it possible to anticipate a worsening of the situation where the battery 3 will no longer be able to supply a sufficient voltage to power the control circuit or at least the storage circuit 4. This configuration makes it possible to to detect more quickly a battery 3 which will not be functional and this allows to reactivate some passivated batteries 3 without intervention of a user. In a particular embodiment, the measurement circuit 6 is configured to measure the voltage Vbat across the battery 3 as soon as a battery 3 has been installed. Under these conditions, a newly placed battery 3 is automatically detected which allows the user to know immediately if the new battery 3 inherently has a problem. This avoids the user who has just placed a new battery to return change this battery that is defective.
    [0025] The measuring circuit 6, the comparator 7 and the management circuit 5 may be made by separate electronic circuits or they may be at least partially made in the same electronic circuit, for example the control circuit A and in particular by a microcontroller. The use of a microcontroller to form at least a portion of the management circuit 5, the measuring circuit 6, the comparator 7 and / or the counter 12 is advantageous because it allows for a compact device and low energy consumption. In a particular configuration shown in FIG. 1b, the primary power source 2 applies a supply voltage Vdd to the monitoring device 1 via a first diode 13.
    [0026] This configuration is particularly advantageous when the primary power comes from the power line to be monitored which is an AC or DC power supply. This configuration can also be applied to the device according to FIG.
    [0027] The voltage Vdd is applied to the anode of the first diode 13. The first diode 13 is arranged to feed the management circuit 5. The cathode of the first diode 13 is here connected to the input of the control circuit A. In an advantageous embodiment, the first diode 13 is also connected to a first terminal of a decoupling capacitor 14 configured to smooth the voltage applied by the power supplies. A second terminal of the decoupling capacitor 14 is connected to the reference potential 11, here to earth. The supply of the management circuit 5 by the primary source 2 saves the electric battery 3 which intervenes only in case of fault of the primary source 2.
    [0028] It is also the same for the other elements used to monitor the state of the battery 3 namely the measuring circuit 6, the counter 12 and the comparator 7.
    [0029] The anode of the battery 3 is connected to the source of the transistor 10. The management circuit 5 applies a voltage Vo to the gate of said transistor 10, which makes it possible to control the passage of a current from the battery 3 (FIG. 1b ).
    [0030] In the example illustrated, the drain of the transistor 10 is connected to the anode of a second diode 15. The cathode of the diode 15 is connected to the input of the control circuit 4. The electrical connection between the two diodes 13 and with the decoupling capacitor 14 defines a second node N2. By way of example, the transistor 10 is a P-type MOSFET transistor.
    [0031] In an advantageous embodiment, the supply voltage Vdd supplied by the primary power supply 2 is about 3.3V with a tolerance of plus or minus 5%. The voltage Vbat battery 3 is about 3.6V for a fully charged battery 3.
    [0032] In one embodiment, the decoupling capacitor 14 is a capacitor having a capacitance of the order of Cd = 1p, F. In a particular configuration, the first diode 13 and the second diode 15 are Schottky or silicon diodes having a low direct voltage. In a particular operating mode illustrated in FIG. 1b, the discharge current passes through the control circuit A. The electric charge 9 is connected between the control circuit A and the reference potential 11. For example, an electrical resistance of about 1kS2 can be used to form the electric charge 9. In this case, a discharge current Id of about 3mA is advantageous to ensure the degradation of the passivation layer. The discharge current is advantageously equal to 3 mA, which corresponds with the variations of embodiment to a current of between 2.7 and 3.3 mA. In this configuration, a first electrical node N1 is defined by the connection of the anode of the battery 3 with the terminal of the source of the transistor 10 and the supply input of the control circuit A. The voltage Vbat of the battery 3 can be measured at the node N1 by the measuring means 6. A second electrical node N2 is defined by the connection of the cathode of the first diode 13 with the cathode of the second diode 14 and the second input of the control circuit. A terminal of the decoupling capacitor 14 is also connected to the node N2.
    [0033] In operation, the monitoring device 1 can apply the monitoring protocol of the state of the battery 3 which will follow and illustrated in FIG. 2. The beginning of the process is represented by the step 20, the battery 3 is present and the monitoring device 1 is powered either by the battery 3 or by the primary power source 2. Step 20 can be considered as a standby state. A measurement command is sent to initiate the measurement of the voltage Vbat at the terminals 3a of the battery 3. Advantageously, the measurement of the voltage Vbat is carried out by passing a current through the load. At a step 21, the voltage Vbat at the terminals of the battery 3 is measured by the measuring means 6. Preferably, the measurement of the voltage Vbat can be carried out by multiple successive measurements, which makes it possible, for example, to calculate an average of the voltage Vbat, in order to obtain a more reliable value of Vbat. At a step 22-23, the measured voltage Vbat is compared with the first and second threshold values Vmin and VOFF. In step 22, the measured voltage Vbat is compared with the first threshold value VOFF (Vbat <VOFF ) - If the voltage Vbat is lower than the first threshold value VOFF (Vbat <V0FF), the battery 3 is considered as faulty (step 24) and it is advantageous to replace it. Advantageously, the detection of the faulty state is associated with the signaling of this state to the user (step 25). Following this signaling event, the management method may end with a waiting phase for the replacement of the battery 3. The signaling may be carried out, for example, with a advantageously discrete signal sent by the output 8 to a diode electroluminescent or a digital or analog signal sent to another member of the monitoring device. In a particular embodiment, the threshold value VOFF is equal for example to 2.3V.
    [0034] If the voltage Vbat, in step 22, is greater than the first threshold value VOFF (Vbat> VOFF), the measured voltage Vbat is compared with the second threshold value Vmin. In step 23, the measured voltage Vbat is compared with the second threshold value Vrnir (Vbat> Vrain ).
    [0035] If the voltage Vbat is greater than the second threshold value Vmin (Vbat> Vmin), the battery 3 is considered functional. This information can be stored in memory.
    [0036] The management method then returns to a waiting state (step 20) or it starts again a step of measuring the voltage Vbat (step 21). Advantageously, the tracking method returns to the initial state 20 and it waits for a new measurement order in order to avoid overloading the battery 3.
    [0037] If the voltage Vbat is lower than the second threshold value Vrnin (Vbat <Vmin) it means that the voltage Vbat is in the voltage range between the first threshold value VoFF and the second threshold value Vmin. The battery 3 may have a problem that can be corrected.
    [0038] An additional test protocol of the battery 3 is engaged (step 26). A discharge current Id is applied to the battery 3 through the load 9 in order to break the passivation layer. Advantageously, with the application of a discharge current Id, the counter 12 is incremented in order to know the number of occurrences of this type of problem (step 27).
    [0039] The counter is configured to record the number of iterations of the activation of the discharge current Id. As indicated above, the counter records a datum representative of the number of iterations (n). It is therefore possible to record a time, an electric charge, the number of iterations performed or another quantity. The incrementation of the counter (step 27) can be performed, before step 26, during step 26 or after step 26.
    [0040] After applying the discharge current Id for a predefined period, the voltage Vbat across the battery 3 is measured again (step 21) to measure the evolution of the voltage Vbat.
    [0041] As previously, the measured voltage Vbat is compared with the first and second voltage values (steps 22 and 23). If the voltage Vbat is greater than the second threshold value Vmin (Vbat> Vmin), the battery 3 is considered functional. This information can be stored in memory and it is advantageous to reset the counter 12. If the voltage Vbat is lower than the first threshold value (Vbat <VoFF), the battery 3 is considered to be faulty and it is advantageous to replace it. The protocol described above can be applied. If the voltage Vbat is in the voltage range between the first threshold value VOFF and the second threshold value Vmin, it is possible to generate again a discharge current Id.
    [0042] In order to avoid the repetition of the discharge current Id at the terminals of the battery 3 until the voltage Vbat is lower than the first threshold value VoFF, it is advantageous to introduce a step 28 for comparing the recorded value. in the counter 12 with respect to a critical value No (n <No ). Here again the position of step 28 with respect to steps 26 and 27 is of little importance. Once the limit value No has been reached, it is considered that the battery 3 can no longer be repaired and the battery is considered faulty (step 24).
    [0043] The failure protocol is advantageously applied to warn the user.
    [0044] Thus, if the measured voltage Vbat is between the first and second threshold values, it is advantageous to make a comparison of the value of the counter with respect to a critical value (step 28) in order to determine if the battery 3 is defective or if a discharge current can improve the situation. This is an additional criterion for detecting a faulty battery. Steps 22 and 23 can be inverted to the extent that it is possible to determine if the voltage Vbat is lower than the first threshold value VOFF, greater than the second threshold value Vrnin or in the range indicated above. In an advantageous embodiment, the management protocol includes a repetition of certain steps periodically in order to follow the evolution of the state of the battery 3 in time. Advantageously, the measurement of the voltage Vbat at the terminals 3a of the battery 3 is carried out periodically.
    [0045] In an advantageous embodiment, the management protocol is triggered when a new battery 3 is connected to the monitoring device 1. In this way, the user quickly knows whether the new battery 3 is functional or faulty.
    [0046] It is also possible to force the measurement protocol, for example by means of an action by the user either by pressing a pushbutton 16 or by soliciting a communication interface. If the battery 3 is considered functional, that is to say if the measured voltage is greater than the threshold Vmin, it is advantageous to carry out the voltage measurement according to a first Atmi period, for example equal to 24 hours. On the other hand, the battery 3 can be considered as potentially faulty, that is to say if the measured voltage is lower than the threshold Vram but greater than the threshold VOFF. Advantageously, when the voltage at the terminals of the battery 3 is measured at within the range defined by the voltages Vmm and V0FF, a discharge current Id is applied and the voltage Vbat is measured after a predefined period of waiting which follows the cessation of the discharge current Id. case, it is possible to work with a new period which is reduced compared to the case where the battery is considered functional. By way of example, good results have been obtained with a period At, reduced to 19 seconds between the end of the application of the current Id and the measurement of the voltage Vbat.
    [0047] In a particular operating mode, the measurement of the voltage Vbat, carried out during the step 21, can be described schematically in the manner represented in FIG. 3. In the embodiment illustrated in FIG. 3, the measurement of the voltage is carried out cyclically. The period is equal to the time Atm. As indicated above, to obtain a more accurate measurement of the voltage Vbat across the battery, several voltage measurements are preferably performed. For example, three voltage measurements are made. These measurements are carried out at times tt, t2 and t3 in FIG. 3. The three measurements can be spaced from the same rest period or it is possible to apply a different rest period between the first and second measurements and between the second and third measures.
    [0048] In a mode of operation giving good results, a waiting time of at least 2ms is present between two successive voltage measurements.
    [0049] In a particular mode of operation, during a period Atm, a discharge phase with a current equal to Id is applied. This periodic discharge phase makes it possible to solicit the terminals of the battery to reduce the formation of a passivation layer.
    [0050] Preferably, the voltages are measured after a first waiting time Att, for example at least equal to 48 ms. This first waiting time corresponds to the time that separates the end of the application of the current Id and the first voltage measurement Vbat. The first waiting time makes the voltage measurement more reliable.
    [0051] During the first waiting time, it is possible to apply a second current which is lower than the first current Id. The second current is advantageously less than half of the first current Id. It is also possible to have a zero current during the first waiting time.
    [0052] During this period, there is a discharge phase with a current equal to Id from t0 to t3 and a quiescent phase with a current much less than Id of t3 at the end of the period Atm.
    [0053] For example, good experimental results have been obtained with an Atm period equal to 19 seconds and a phase to t3, where the current is equal to Id, equal to 50 milliseconds. By way of example, the evolution of the voltage across the battery is shown in FIG. 4. Until time A, the measured voltage Vbat lies between the voltages VoFF and Vrnin. There is a doubt about the state of the battery which can be functional but passivated. Until time A, a discharge current is applied from the battery 3. From the moment A and up to the moment B, the voltage Vbat is greater than the voltage Vrnin and the battery 3 is considered functional. The measurement of the voltage Vbat is carried out periodically. From the moment B and up to the moment C, the voltage Vbat is between the voltage Vrnin and the voltage VOFF. A discharge current is again applied. From the moment C, the voltage Vbat is lower than the voltage VoFF and the battery 3 is considered as faulty.
    [0054] Thus, there is provided an effective device, simple to implement, and particularly suitable for the state of a power supply battery 3 of a monitoring device.
    权利要求:
    Claims (8)
    [0001]
    REVENDICATIONS1. A monitoring device (1) for a power supply comprising: a series of first terminals for connection to a primary power supply (2), a battery (3) connected to supply the monitoring device (1) as a secondary power supply, in case of disappearance of the primary power supply (2), measurement means (6) configured to measure the voltage (Vbat) at terminals (3a) of the battery (3), a management circuit (5) for detecting a battery failure (3), characterized in that it comprises: a comparator (7) configured to compare the voltage measured by the measuring means (6) with first and second threshold values (Vmin, VoFF), an output the comparator (7) being coupled to the management circuit (5), a switch (10) configured to block / enable the passage of a discharge current (Id) across the battery (3), a counter (12) configured to count a magnitude representative of the discharge current ge (Id), an output of the counter (12) being coupled to the management circuit (5), the management circuit (5) being configured to control the state of the switch (10) according to the comparison of the measured voltage (Vbat) with the first and second threshold values (Vmin, VOFF) and as a function of the value of the counter (12).
    [0002]
    2. Circuit breaker comprising a monitoring device (1) according to claim 1.
    [0003]
    3. Circuit breaker according to claim 2 comprising a storage circuit (4) configured to record indicators related to the causes of tripping of the circuit breaker and powered by the battery (3).
    [0004]
    4. A method of managing the discharge of a battery (3) in a monitoring device (1) characterized in that it comprises the following steps: providing a monitoring device (1) of a power supply provided: a first series of terminals intended to be connected to a primary power supply, o a storage circuit (4) configured to record indicators related to the measured electrical quantities of the power supply, o a connected battery for supplying at least a part of the storage circuit (4) in the event of the disappearance of the primary power supply, o measuring means (6) configured to measure the voltage (Vbat) at the terminals of the battery (3), o a management circuit (5) connected to the measuring means (6) and configured to detect a battery failure (3), detect the presence of the battery (3), measure (21) the voltage across the battery (Vbat ), compare (22, 23) the voltage (Vbat) measured at the terminals of the battery (3) at first and second threshold values (VOFF, Vmin), applying a discharge current (Id) to the terminals of the battery (3) if the measured voltage ( Vbat) is between the first and second threshold values (VoFF, Vrnin).
    [0005]
    5. Management method according to claim 4, characterized in that if the voltage (Vbat) measured at the terminals of the battery (3) is lower than the first threshold value (VoFF), the battery (3) is considered as faulty by the management circuit (5).
    [0006]
    6. Management method according to one of claims 4 and 5, characterized in that it comprises the following steps: count the number of iterations of application of the discharge current (Id), compare this number of iterations to a critical value (Ne), consider the battery (3) as faulty if the number of iterations is equal to the critical value (Nc).
    [0007]
    7. Management method according to any one of claims 4 to 6, characterized in that the discharge current (Id) is a periodic current with alternating periods of discharge to a first current and rest periods to a second current less than the first current or zero current.
    [0008]
    8. Management method according to one of claims 3 to 6, characterized in that the discharge current (Id) is equal to 3mA.20
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    同族专利:
    公开号 | 公开日
    EP2924455A1|2015-09-30|
    CN104953641A|2015-09-30|
    US9759777B2|2017-09-12|
    US20150270725A1|2015-09-24|
    CN104953641B|2019-03-01|
    FR3018922B1|2017-09-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2936675A1|1979-09-11|1981-03-19|Wörl-Alarm August Wörl, 8035 Gauting|Emergency power supply alarm circuit - monitors flotated battery charge current or discharge current and battery voltage using differential amplifier coupled to AND=gate|
    US4839248A|1988-01-15|1989-06-13|Rainin Instrument Co., Inc.|System and method for depassivating a passivated lithium battery in a battery powered microprocessor controlled device|
    GB2292249A|1994-08-04|1996-02-14|Gec Alsthom Ltd|A method of activating batteries subject to electrode passivation prior to connection to feed current to a primary load|
    EP0948828A1|1996-08-19|1999-10-13|Siemens Aktiengesellschaft Österreich|Method and circuit for depassivation of a battery|
    JP2003067091A|2001-08-28|2003-03-07|Matsushita Electric Works Ltd|Device and method for detecting abnormality of backup battery for memory|
    EP2557651A2|2011-08-12|2013-02-13|Askey Technology Ltd.|Backup battery protection system.|
    US20130308239A1|2011-09-20|2013-11-21|Sanyo Electric Co., Ltd.|Switching device and breaker control method|
    US4751606A|1987-02-20|1988-06-14|Westinghouse Electric Corp.|Circuit interrupter apparatus with a battery backup and reset circuit|
    US5444378A|1988-07-13|1995-08-22|Electronic Development Inc.|Battery state of charge monitor|
    US5089928A|1989-08-31|1992-02-18|Square D Company|Processor controlled circuit breaker trip system having reliable status display|
    US5224011A|1991-04-19|1993-06-29|Gas Research Institute|Multifunction protective relay system|
    US6045941A|1997-07-08|2000-04-04|Schlumberger Technology Corporation|Method to determine the state of charge and remaining life of lithium batteries used in oilfield services applications|
    US6118251A|1999-01-27|2000-09-12|The United States Of America As Represented By The Secretary Of The Army|Battery depassivation and conditioning method and apparatus|
    US7164214B2|2002-11-25|2007-01-16|Dean Eisenberger|Uninterruptible DC power supply for equipment associated with a mobile site|
    CN101195346A|2006-12-08|2008-06-11|研华股份有限公司|Vehicle mounted electric power monitoring method|
    FR2996059B1|2012-09-24|2015-06-26|Commissariat Energie Atomique|PROCESS FOR PRODUCING A HETEROJUNCTION PHOTOVOLTAIC CELL AND PHOTOVOLTAIC CELL THUS OBTAINED|CN109073712A|2016-05-13|2018-12-21|舒马克电器公司|Battery status detection system and method|
    WO2017197383A1|2016-05-13|2017-11-16|Schumacher Electric Corporation|Battery state detection system and method|
    WO2018195849A1|2017-04-27|2018-11-01|深圳市大疆创新科技有限公司|Mobile platform, computer readable storage medium, battery and control method and system thereof|
    DE102017208770B4|2017-05-23|2019-03-28|Audi Ag|Method for checking a battery condition and tester for checking a battery condition|
    WO2020180317A1|2019-03-06|2020-09-10|Johnson Controls Fire Protection LP|Lithium battery passivation detection|
    WO2020180318A1|2019-03-06|2020-09-10|Johnson Controls Fire Protection LP|Lithium battery activation and long-term maintenance|
    WO2020180320A1|2019-03-06|2020-09-10|Johnson Controls Fire Protection LP|Lithium battery passivation detection, activation and maintenance module|
    法律状态:
    2016-03-08| PLFP| Fee payment|Year of fee payment: 3 |
    2017-03-14| PLFP| Fee payment|Year of fee payment: 4 |
    2018-03-14| PLFP| Fee payment|Year of fee payment: 5 |
    2020-03-11| PLFP| Fee payment|Year of fee payment: 7 |
    2021-03-26| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1400711A|FR3018922B1|2014-03-24|2014-03-24|MONITORING DEVICE WITH BATTERY DISCHARGE MANAGER AND DISCHARGE MANAGEMENT METHOD|FR1400711A| FR3018922B1|2014-03-24|2014-03-24|MONITORING DEVICE WITH BATTERY DISCHARGE MANAGER AND DISCHARGE MANAGEMENT METHOD|
    CN201510119272.8A| CN104953641B|2014-03-24|2015-03-18|Monitoring device and battery discharge management method including battery discharge management|
    US14/665,351| US9759777B2|2014-03-24|2015-03-23|Monitoring device comprising a management of battery discharge and method of battery discharge management|
    EP15160550.8A| EP2924455A1|2014-03-24|2015-03-24|A monitoring device comprising a management of battery discharge and method of battery discharge management|
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