• 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:
    A method of monitoring an electric vehicle battery comprises successive steps of measuring the state of charge of the electric battery at predetermined intervals. The method includes steps (204, 207) for comparing measured electric battery charge state values to a predetermined threshold, and steps for comparing (205, 208) the number and date of measured state values. below said predetermined threshold to a predetermined number and date, with a view to deciding on the replacement or recharging of the electric battery, to avoid immobilization of the vehicle or to remedy it.
    公开号:FR3020614A1
    申请号:FR1453956
    申请日:2014-04-30
    公开日:2015-11-06
    发明作者:Sophie Genin-Demure；Gerard Saint-Leger
    申请人:Renault SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to a method for monitoring an electric vehicle battery.
    [0002] The invention also relates to a device for monitoring an electric vehicle battery. The invention is particularly useful for providing decision support to a mechanic or an operator confronted with a vehicle starter failure and to inform a driver or a vehicle user of an abnormality relating to the electric battery of the vehicle. The invention is also particularly useful for sending a mechanic or an operator, as well as a user or a driver of a vehicle, a warning, an alert or an indication relating to the state of the electric battery used to start the vehicle. vehicle.
    [0003] In the event of a breakdown immobilizing a vehicle, a car mechanic or an operator may be faced with numerous cases of vehicle immobilization. In the event of a breakdown preventing the immediate start-up of the vehicle, the operator or the mechanic can not easily determine whether it is necessary to replace the current battery with a new battery, or if it is only necessary to recharge the current battery if she was subjected to a deep discharge. Generally, in the absence of sufficient information, the operator or the mechanic is led to replace the current battery with a new battery, so as to allow a quick start of the vehicle and to avoid immobilization in the near future. It has been found, however, that in three quarters of the cases, the batteries have simply been subjected to a deep discharge which does not justify their replacement. Furthermore, in the case of stationary vehicles, the driver or the user may forget to turn off the headlights or other electricity consuming device, which leads to the gradual discharge of the electric battery, or even up to immobilization of the vehicle preventing the subsequent starting of the vehicle. Also, in the case of a sleeping vehicle not having to consume electrical power, a fault internal to the vehicle can lead to an unwanted discharge of the electric battery. A need has therefore arisen to monitor the electric vehicle batteries, so as to avoid unnecessary replacements by new batteries, and to allow a user or a driver to remedy a discharge of the electric battery which may lead to immobilization of the vehicle. A first object of the invention is to overcome the disadvantages of the state of the art, by proposing a new method of monitoring an electric vehicle battery to prevent the immobilization of the vehicle or to remedy. Another object of the invention is to propose a new device for monitoring an electric vehicle battery that makes it possible to prevent the immobilization of the vehicle or to remedy it. The subject of the invention is a method for monitoring an electric vehicle battery, comprising successive steps for measuring the state of charge of the battery at predetermined intervals, characterized in that the method furthermore comprises steps of comparing the measured values of the state of charge of the battery with a predetermined threshold and steps of comparing the number of values measured below said predetermined threshold with a predetermined number, with a view to deciding on the replacement or recharging of the electric battery , avoid immobilization of the vehicle or remedy it. According to other alternative features of the invention: the method comprises a step of determining the state of the vehicle to determine whether the vehicle is electrically asleep or not. the method includes a step of sending an alert, for example an electronic message, a text message or any other type of alert message to a driver or user of the vehicle. the method comprises a step of determining the possibility of diagnosing the electric battery of the vehicle with the aid of a diagnostic bag. the method includes a step of determining and testing the last open circuit voltage values OCV of the electric battery to determine whether the last open circuit voltage values are significantly greater than zero volts or not. the method includes a step of checking the date of the last empty recordings of the state of charge of the electric battery, to determine whether to charge the electric battery or to replace it with a new battery. the method comprises a step of controlling the number of steps in which the measured measured values of the state of charge of the electric battery are lower than a predetermined number, with a view to deciding whether to charge the electric battery or replace it with a new battery. The invention also relates to a device for monitoring an electric vehicle battery, comprising means for successively measuring the state of charge of the battery at predetermined intervals, characterized by means for comparing the measured values of the battery. state of charge of the battery to a predetermined threshold and by means of comparing the number of measured values below said predetermined threshold to a predetermined number, in order to decide on the replacement or recharging of the electric battery, to avoid immobilization of the vehicle or to remedy it.
    [0004] According to other alternative features of the invention: the device comprises a CAN communication bus adapted to be connected to a diagnostic case and to a telecommunication control unit, said telecommunication control unit being able to issue an alert to a receiver of a driver or user of a vehicle. the device comprises a LIN communication bus connecting an electrical energy management computer to an electric vehicle battery. The invention will be better understood from the following description given by way of non-limiting example, with reference to the accompanying drawings, in which: FIG. 1 schematically represents a flowchart of a method of monitoring an electric vehicle battery . Figure 2 schematically shows a flowchart of another method of monitoring an electric vehicle battery.
    [0005] FIG. 3 diagrammatically represents a device for monitoring an electric vehicle battery for implementing one of the monitoring methods according to the invention of FIG. 1 or FIG. 2. In FIG. of an electric vehicle battery starts with a step 100 in which the vehicle is stopped, that is to say that the internal combustion engine of the vehicle is stopped. The method continues at a step 101 of verifying the state of the vehicle, to check whether the vehicle is "asleep" or not. The state of a vehicle can be qualified as "sleeping" if the vehicle is in a standby state by having stopped any electrical consumption likely to discharge the electric battery of the vehicle. If it is noted in step 101 that the vehicle is asleep, the method continues to a step 102. In step 102, the data corresponding to an open circuit voltage OCV is measured, this measured data of open circuit voltage OCV being recorded in the vehicle's electrical energy management computer. In step 102, the open circuit voltage data OCV is also compared with a first predetermined threshold, for example of the order of 12 volts. If the open-circuit voltage OCV is greater than said predetermined threshold, the method loops back to step 101 of verifying the state of the vehicle.
    [0006] If the open circuit voltage OCV is below said predetermined threshold, step 104 is sent to send an alert to the driver or the user of the vehicle. The sending of the alert can be carried out by an SMS text message which ends on the mobile phone or the smartphone of the driver or the user of the vehicle. Any other mode of alert can also be envisaged without departing from the scope of the present invention, such as a voice message, an e-mail message, or any other type of sending that may be received on a receiver of the user or driver of the vehicle. If, at step 101, it is found that the vehicle is not asleep, that is to say that an electrical consumption remains, particularly in the case of an electrical fault, a gauge check is carried out at step 103. The gauge control is a measured data available in the vehicle's electrical energy management computer. This gauge control corresponds to the state of charge of the electric battery of the vehicle. The gauge control of step 103 makes it possible to compare the data available in the electrical energy management computer with another predetermined threshold, for example of the order of 7 volts. If step 103 determines that the state of charge of the SOC battery is lower than said predetermined value of said other predetermined threshold, proceed to step 104 of sending an alert to the driver or to the vehicle user. This step 104 corresponds to the sending of an alert on a receiver of the driver or the user of the vehicle, as described above, by an SMS text message or by any other alert mode, such as a voice message, an e-mail message, or any other type of mail that may be received on a receiver of the user or the driver of the vehicle. If the gage control of step 103 determines that the state of charge SOC of the electric battery of the vehicle is greater than said predetermined value of said other predetermined threshold, the method loops at step 101 of determining the state of the vehicle. In Figure 2, another method of monitoring an electric vehicle battery starts with a step 200 in which the vehicle is stopped, that is to say with its engine stopped. In the case of step 200, the vehicle is likely to be immobilized in a startup failure, that is to say that the internal combustion engine can not start without outside help. Next, a diagnostic check step 201 is carried out by means of a known type of diagnostic bag, commonly referred to as a "clip case" by specialists.
    [0007] If step 201 leads to finding that the diagnosis is possible using a clip case, we go to step 204 of reading the internal memory of the electrical energy management computer of the vehicle by the clip case . In step 204, the case accesses the reading of a predetermined number of stored values of the state of the SOC vehicle battery, for example from the last twelve recorded values at intervals of about two hours. The reading of the last values recorded by the electrical energy management computer makes it possible to compare the recorded values with a predetermined threshold, for example of the order of 12 volts, of state of charge SOC of the electric battery. This comparison is performed by raising the values below this predetermined threshold and recording the number of these values below said predetermined threshold, for example of the order of 12 volts. The number of recorded values below said predetermined threshold is compared with step 205 to a predetermined number, for example half of the total number of recorded values. In this example, it is checked whether the number of values measured below said predetermined threshold is less than six of the last twelve measured values recorded in the electrical energy management computer. The invention is not limited to the values, thresholds and numbers given by way of nonlimiting example, and extends on the contrary to all other numbers, values or thresholds compatible with the verification methodology according to the invention. If, in step 205, it is found that the number of values measured lower than the predetermined threshold is lower than the fixed predetermined number, a step 206 of recharging the battery is carried out. If the number of values measured below said predetermined threshold is greater than said predetermined number, a step 209 of replacement of the electric battery by a new battery is carried out. In step 201, if it is found that the diagnosis of the vehicle is not possible using a clip case, it proceeds to a step 202 of starting the vehicle with the aid of an external battery, or a starter device by connecting the vehicle to an external battery or other electrical starting means. After starting the vehicle in step 202, we go to a step 203 for controlling the electric battery by checking with the Clip case the values recorded in the electrical energy management computer. The control of the values recorded in step 203 is performed on the open circuit voltage values OCV. If it is found in step 203 that the last OCV open-circuit voltages are substantially greater than zero volts, step 204 is described above, followed by step 205 to step 206 or step 209, as previously described. If the control of step 203 determines that the last OCV open circuit voltages are close to zero Volt, we go to a step 207 of reading the data recorded in the electrical energy management computer. In step 207, the case accesses reading a predetermined number of stored values of the state of the SOC vehicle battery, for example from the last twelve recorded values at intervals of about two hours. The control of step 208 makes it possible to compare the date of the last OCV open circuit voltage record with a predetermined threshold, for example twelve hours. If the control of step 208 determines that the date of the last OCV open-circuit voltage recording is less than a predetermined date, for example, is less than 12 hours, step 206 is taken to charge the battery. If the check at step 208 shows that the date of the last OCV open circuit voltage record is greater than a predetermined date, for example, is greater than twelve hours, then step 209 of replacing the battery by a new battery. In FIG. 3, an electric battery monitoring device according to the invention comprises a garage clip case or a diagnostic bag 1.
    [0008] The diagnostic bag 1 is connected by a CAN communication bus 2 to a power management computer 3. The data passing through the portion of the CAN communication bus 2 are mainly time data and read data of measured values of electric battery charge state or open-circuit voltage of the electric battery. The computer 3 for managing electrical energy communicates with the battery B of the vehicle via a LIN communication bus. This LIN communication bus 4 enables the electric power management computer 3 to record the state of charge SOC of the electric battery as resulting from a function of the current delivered by the electric battery B. The management computer of FIG. electrical energy 3 also makes it possible to perform a comparison of the state of charge SOC of the electric battery with a predetermined threshold arbitrarily chosen to implement the method described with reference to FIG. 1 or the method described with reference to FIG. 2 The storage or recording of the charge states SOC of the electric battery is carried out in the energy management computer by means of a sliding time window making it possible to classify by measured dates the values measured and recorded in the management computer 3. of electrical energy.
    [0009] The values corresponding to the gauge control and to the open circuit voltage control OCV are recorded or stored in the computer 3 for managing electrical energy. The electrical energy management computer 3 is also connected by the CAN communication bus 2 to a control and telecommunications unit 5 capable of delivering a message or a wireless communication alert to a user or a vehicle driver having a unit 6 of reception, for example a portable device, a smartphone or a mobile phone. The communication between the electrical energy management computer 3 by the CAN communication bus 2 with the control and telecommunications unit 5 is carried out in order to implement the method according to the invention described with reference to FIG. when the open circuit voltage OCV is below a predetermined threshold or if the gauge check reveals a value lower than another predetermined threshold. The invention described with reference to particular embodiments is not in any way limited to them, but on the contrary covers any modification of form and any variant embodiment within the scope and spirit of the appended claims.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. A method of monitoring an electric vehicle battery (B), comprising successive steps of measuring the state of charge (SOC, OCV) of the electric battery at predetermined intervals, characterized by comparison steps (205, 208, 102, 103) measured values of state of charge (SOC, OCV) of electric battery at a first predetermined threshold and a step of comparing the number of measured values below said predetermined threshold to a predetermined number, in order to decide the replacing or recharging the electric battery, to avoid immobilization of the vehicle or to remedy it.
    [0002]
    2. Method according to claim 1, characterized in that the method comprises a step (101) of determining the state of the vehicle to determine whether the vehicle is electrically dormant or not.
    [0003]
    3. Method according to claim 1 or claim 2, characterized in that the method comprises a step of sending an alert, for example an electronic message, a text message (SMS) or any other another type of alert message to a driver or user of the vehicle.
    [0004]
    4. Method according to any one of the preceding claims, characterized in that the method comprises a step (201) for determining the possibility of diagnosis of the electric battery of the vehicle using a suitcase (1) of diagnostic.
    [0005]
    5. Method according to claim 4, characterized in that the method comprises a step (203) for determining and testing the last open circuit voltage values (OCV) of the electric battery to know if the last voltage values in open circuit are significantly greater than zero Volt or not. 25
    [0006]
    6. Method according to claim 4 or claim 5, characterized in that the method comprises a step (208) of date control of the last empty recordings of the state of charge (SOC) of the electric battery, to determine whether to charge the battery or replace it with a new battery.
    [0007]
    7. Method according to any one of claims 4 to 6, characterized in that the method comprises a step of controlling (205) the number of steps in which the measured measured values of the state of charge (SOC, OCV) of the electric battery are less than a predetermined number, in order to decide whether to charge the battery or replace it with a new battery.
    [0008]
    8. Device for implementing a method according to any one of claims 1 to 7, characterized in that the device comprises means (3) for measuring the state of charge (SOC, OCV) of the electric battery (B) at predetermined intervals, characterized in that the device further comprises means for comparing (3) the measured measured values of state of charge (SOC, OCV) of the electric battery to a predetermined threshold, and by means of comparing (3) the number of measured values stored below said predetermined threshold to a predetermined number, with a view to deciding on the replacement or recharging of the electric battery, to avoid immobilization of the vehicle or to remedy it .
    [0009]
    9. Device according to claim 8, characterized in that the device comprises a CAN communication bus (2) adapted to be connected to a diagnostic case (1) and to a telecommunication control unit (5), said unit (5) telecommunication control being able to issue an alert towards a receiver (6) of a driver or user of a vehicle.
    [0010]
    10. Device according to claim 8 or claim 9, characterized in that the device comprises a LIN communication bus (4) connecting an ECU (3) to an electric vehicle battery (B). .
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    法律状态:
    2015-04-21| PLFP| Fee payment|Year of fee payment: 2 |
    2015-11-06| PLSC| Publication of the preliminary search report|Effective date: 20151106 |
    2016-04-21| PLFP| Fee payment|Year of fee payment: 3 |
    2017-04-19| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1453956A|FR3020614B1|2014-04-30|2014-04-30|METHOD AND DEVICE FOR MONITORING A VEHICLE ELECTRIC BATTERY|FR1453956A| FR3020614B1|2014-04-30|2014-04-30|METHOD AND DEVICE FOR MONITORING A VEHICLE ELECTRIC BATTERY|
    PCT/FR2015/050749| WO2015166153A1|2014-04-30|2015-03-25|Method and device for monitoring the electrical battery of a vehicle|
    CN201580023196.9A| CN106463978B|2014-04-30|2015-03-25|Method and apparatus for monitoring the battery of vehicle|
    KR1020167031814A| KR20160148583A|2014-04-30|2015-03-25|Method and device for monitoring the electrical battery of a vehicle|
    JP2016564572A| JP6682452B2|2014-04-30|2015-03-25|Method and apparatus for monitoring an electric battery in a vehicle|
    EP15717559.7A| EP3138179B1|2014-04-30|2015-03-25|Method and apparatus for monitoring battery of vehicle|
    US15/307,250| US20170050531A1|2014-04-30|2015-03-25|Method and device for monitoring the electrical battery of a vehicle|
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