CN113933719A - System and method for monitoring battery core fault and vehicle - Google Patents
System and method for monitoring battery core fault and vehicle Download PDFInfo
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- CN113933719A CN113933719A CN202010609845.6A CN202010609845A CN113933719A CN 113933719 A CN113933719 A CN 113933719A CN 202010609845 A CN202010609845 A CN 202010609845A CN 113933719 A CN113933719 A CN 113933719A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
Abstract
The present disclosure relates to a system, a method and a vehicle for monitoring battery core faults, wherein the system comprises: the battery sampling module is respectively connected with the main controller and the battery pack; the battery sampling module is used for acquiring the state information of the battery pack, awakening the main controller and sending the state information to the main controller under the condition that the state information is determined to be in an abnormal state and the main controller is in a dormant state; the main controller is used for receiving the state information of the battery pack sent by the battery sampling module after being awakened and outputting the state information. That is to say, the battery sampling module wakes up the main controller and outputs the state information through the main controller under the condition that the acquired state information of the battery pack is determined to be in an abnormal state, so that the state of the battery pack can be monitored when the battery management system is in a dormant state, and the occurrence of safety accidents can be reduced.
Description
Technical Field
The present disclosure relates to the field of vehicle technologies, and in particular, to a system and a method for monitoring a cell fault, and a vehicle.
Background
The electric automobile is a vehicle which takes a vehicle-mounted power supply as power and drives wheels by a motor to run, and has smaller influence on the environment compared with the traditional automobile, so the electric automobile has wide prospect. Pure electric vehicles generally have three operating states: the vehicle is in a driving (discharging) state, a charging state and a flameout parking state, and almost all electric equipment is in a closing or sleeping state in order to save battery energy after the vehicle is in the flameout parking state.
When the vehicle is in a stationary state for a long period of time, the battery management system is generally in a power-down or sleep state, in which case the battery is in a complete runaway state. When the battery breaks down, no management and control or data recording exists, and more safety accidents are caused.
Disclosure of Invention
In order to solve the above problems, the present disclosure provides a system, a method and a vehicle for monitoring a cell fault.
In a first aspect, the present disclosure provides a system for monitoring a cell fault, the system comprising: the battery sampling module is respectively connected with the main controller and the battery pack; the battery sampling module is used for acquiring state information of the battery pack, awakening the main controller and sending the state information to the main controller under the condition that the state information is determined to be in an abnormal state and the main controller is in a dormant state; and the main controller is used for receiving the state information of the battery pack sent by the battery sampling module after being awakened and outputting the state information.
Optionally, the main controller includes a power management module, a single chip microcomputer, and a bridge chip, where the power management module is connected to the single chip microcomputer and the bridge chip, respectively, and the single chip microcomputer is connected to the bridge chip; the battery sampling module is further configured to wake up the bridge chip and send the state information to the bridge chip when it is determined that the state information of the battery pack is in an abnormal state; the bridging chip is used for awakening the power management module after being awakened and sending the received state information sent by the battery sampling module to the single chip microcomputer; and the single chip microcomputer is used for receiving the state information sent by the bridging chip and outputting the state information after the power management module is awakened.
Optionally, the bridge chip includes a communication circuit and a wake-up circuit, the communication circuit is connected to the wake-up circuit, the battery sampling module, the power management module and the single chip, and the wake-up circuit is connected to the communication circuit and the power management module; the battery sampling module is also used for sending a wake-up signal to the wake-up circuit; the wake-up circuit is used for receiving the wake-up signal sent by the battery sampling module and waking up the communication circuit according to the wake-up signal; and the communication circuit is used for respectively carrying out data transmission with the battery sampling module, the power management module and the singlechip.
Optionally, the battery sampling module is further configured to send, to the main controller, an identifier of an electric core of which the state information is an abnormal state, when the state information of the battery pack is the abnormal state.
Optionally, the battery sampling module is configured to periodically collect the state information of the battery pack.
In a second aspect, the present disclosure provides a method for monitoring a cell fault, which is applied to a main controller in a system for monitoring a cell fault, where the system for monitoring a cell fault includes: the battery sampling module is respectively connected with the main controller and the battery pack; the method comprises the following steps: receiving the state information of the battery pack sent by the battery sampling module under the condition that the battery sampling module determines that the state information of the battery pack is in an abnormal state and the main controller is awakened; and outputting the state information.
Optionally, the main controller includes a power management module, a single chip microcomputer, and a bridge chip, where the power management module is connected to the single chip microcomputer and the bridge chip, respectively, and the single chip microcomputer is connected to the bridge chip; the receiving the state information of the battery pack sent by the battery sampling module comprises: after the bridge chip is awakened, receiving the state information of the battery pack sent by the battery sampling module through the bridge chip; the outputting the state information includes: awakening the power management module through the bridge chip; after the power management module is awakened, the state information is sent to the single chip microcomputer through the bridge chip; and outputting the state information through the singlechip.
Optionally, the bridge chip includes a communication circuit and a wake-up circuit, the communication circuit is connected to the wake-up circuit, the battery sampling module, the power management module and the single chip, and the wake-up circuit is connected to the communication circuit and the power management module; before the receiving, by the bridge chip, the status information of the battery pack sent by the battery sampling module, the method further includes: receiving a wake-up signal sent by the battery sampling module through the wake-up circuit; and awakening the communication circuit according to the awakening signal.
Optionally, after the outputting the status information, the method further includes: entering a sleep state.
In a third aspect, the present disclosure provides a vehicle including the system for monitoring cell failure according to the first aspect of the present disclosure.
Through the technical scheme, a system for monitoring battery core faults is provided, and the system comprises: the battery sampling module is respectively connected with the main controller and the battery pack; the battery sampling module is used for acquiring state information of the battery pack, awakening the main controller and sending the state information to the main controller under the condition that the state information is determined to be in an abnormal state and the main controller is in a dormant state; and the main controller is used for receiving the state information of the battery pack sent by the battery sampling module after being awakened and outputting the state information. That is to say, the battery sampling module wakes up the main controller and outputs the state information through the main controller under the condition that the acquired state information of the battery pack is determined to be in an abnormal state, so that the state of the battery pack can be monitored when the battery management system is in a dormant state, and the occurrence of safety accidents can be reduced.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a schematic structural diagram of a system for monitoring cell failure according to an exemplary embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another system for monitoring cell faults according to an exemplary embodiment of the present disclosure;
fig. 3 is a connection diagram of a system for monitoring cell failure according to an exemplary embodiment of the present disclosure;
fig. 4 is a flow chart illustrating a method of monitoring cell failure in accordance with an exemplary embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a vehicle according to an exemplary embodiment.
Description of the reference numerals
101 main controller 102 battery sampling module
103 battery pack 1011 power management module
1012 single-chip microcomputer 1013 bridge chip
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
First, an application scenario of the present disclosure will be explained. The method CAN be applied to a scene of monitoring a battery pack of a vehicle after a battery management system is dormant, at present, all pure electric vehicles need to be provided with a vehicle remote monitoring vehicle-mounted terminal, the vehicle-mounted terminal is communicated with the vehicle battery management system, a whole vehicle Controller and other controllers through a CAN (Controller Area Network) bus to acquire data and fault information of each control system in real time and then send the data and the fault information to a remote monitoring platform (generally constructed by a government or a whole vehicle manufacturer), the monitoring platform CAN process and judge safety early warning after receiving the vehicle data, and if the voltage or the temperature of the battery is abnormal, corresponding measures CAN be taken as soon as possible to avoid safety accidents. The battery system is a core component of the pure electric vehicle, is a key point of remote safety monitoring, and when the vehicle is parked on the roadside, spontaneous combustion accidents may occur after long-time solarization and rain, so that the safety monitoring of the battery system is very important in the flameout parking state of the vehicle.
However, in the related art, for a parked pure electric vehicle, controllers such as a battery management system of the pure electric vehicle are in a dormant or power-off state, and state information of the battery cannot be acquired, so that when the battery fails, no management and control or data recording is performed, and many safety accidents are caused.
In order to solve the above problems, the present disclosure provides a system, a method and a vehicle for monitoring a cell fault, where a battery sampling module in the system wakes up a main controller when it is determined that the acquired state information of a battery pack is in an abnormal state, and outputs the state information through the main controller, so that when a battery management system is in a sleep state, the state of the battery pack can be monitored, and thus, occurrence of safety accidents can be reduced.
The present disclosure is described below with reference to specific examples.
Fig. 1 is a schematic structural diagram of a system for monitoring a cell fault according to an exemplary embodiment of the present disclosure. As shown in fig. 1, the system 100 for monitoring cell failure includes: the battery sampling device comprises a main controller 101, a battery sampling module 102 and a battery pack 103, wherein the battery sampling module 102 is respectively connected with the main controller 101 and the battery pack;
the battery sampling module 102 is configured to collect state information of the battery pack 103, wake up the main controller 101 when it is determined that the state information is an abnormal state and the main controller 101 is in a sleep state, and send the state information to the main controller 101;
the main controller 101 is configured to receive the status information of the battery pack 103 sent by the battery sampling module 102 after being awakened, and output the status information.
The system 100 for monitoring a cell fault may be used in a battery management system of a vehicle, when the vehicle is in a stopped state, the main controller 101 may be in a sleep state, and in this case, the battery sampling module 102 may be controlled to collect state information of the battery pack 103 in real time, here, only the battery sampling unit in the battery sampling module 102 may be controlled to be in an operating state, in order to save battery energy of the vehicle, other units in the battery sampling module 102 are still in the sleep state, and when the battery sampling unit determines that the state information of the battery pack 103 is in an abnormal state, the other units in the battery sampling module 102 are wakened up again.
The battery sampling module 102 may wake up the main controller 101 when acquiring the state information of the battery pack 103 and determining that the state information is in an abnormal state, and send the state information of the battery pack 103 to the main controller 101 after the main controller 101 is switched from a sleep state to a wake-up state, where the main controller 101 may output the state information. Here, the manner of outputting the status information may include various manners, for example, the controller 101 may transmit the status information to a server, so that the server may transmit warning information to a TBOX of the vehicle, and the TBOX may control the vehicle to turn on double flashes or whistle after receiving the warning information transmitted by the server, so as to warn surrounding people; the controller 101 may also send an alarm message to a mobile phone of the owner of the vehicle, so that the owner of the vehicle can find the abnormality of the vehicle in time, and safety accidents are avoided. The above-mentioned manner of outputting the status information is only an example, and the status information may also be output by other manners, which is not limited in this disclosure.
It should be noted that the battery sampling module 102 may also be disposed inside the battery pack 103, so that the main controller 101 only needs to be connected to the battery pack 103.
Fig. 2 is a schematic structural diagram of another system for monitoring a cell fault according to an exemplary embodiment of the present disclosure. As shown in fig. 2, the main controller includes a power management module 1011, a single chip microcomputer 1012 and a bridge chip 1013, the power management module 1011 is connected to the single chip microcomputer 1012 and the bridge chip 1013 respectively, and the single chip microcomputer 1012 is connected to the bridge chip 1013;
the battery sampling module 102 is further configured to wake up the bridge chip 1013 and send the state information to the bridge chip 1013 when the state information of the battery pack 103 is determined to be an abnormal state;
the bridge chip 1013 is configured to wake up the power management module 1011 after being awakened, and send the received status information sent by the battery sampling module 102 to the single chip microcomputer 1012;
the single chip microcomputer 1012 is configured to receive the status information sent by the bridge chip 1013 after the power management module 1011 is awakened, and output the status information.
The bridge chip 1013 includes a communication circuit and a wake-up circuit, the communication circuit is connected to the wake-up circuit, the battery sampling module 102, the power management module 1011 and the single chip computer 1012, and the wake-up circuit is connected to the communication circuit and the power management module 1011;
the battery sampling module 102 is further configured to send a wake-up signal to the wake-up circuit;
the wake-up circuit is configured to receive the wake-up signal sent by the battery sampling module 102, and wake up the communication circuit according to the wake-up signal;
the communication circuit is used for data transmission with the battery sampling module 102, the power management module 1011 and the single chip computer 1012 respectively.
The power management module 1011 and the bridge chip 1013 need external power supply, and here, the power management module 1011 can be powered by a 12V storage battery, and the power management module 1011 can be powered by the communication circuit of the single chip computer 1012 and the bridge chip 1013; in addition, the wake-up circuit of the bridge chip 1013 may be powered by another storage battery, and the storage battery may be 12V or other voltages, which is not limited in the present disclosure.
Because this battery package 103 can include a plurality of battery modules, every battery module can include a plurality of electric cores, and every electric core has unique sign in this battery package 103, for example, if this battery package 103 includes 3 battery modules, every battery module includes 10 electric cores, then the sign of 30 electric cores of this battery package 103 can be electric core 1, electric core 2, electric core 3, so on to electric core 30. The battery sampling module 102 corresponding to the plurality of battery modules also includes a plurality of battery sampling units, and each battery sampling unit is used for acquiring state information of different battery modules. Fig. 3 is a schematic connection diagram of a system for monitoring a cell fault according to an exemplary embodiment of the present disclosure, as shown in fig. 3, the battery pack 103 includes four battery modules, that is, a battery module 1, a battery module 2, a battery module 3, and a battery module 4, the battery sampling module 102 includes four battery sampling units, that is, a battery sampling unit 1, a battery sampling unit 2, a battery sampling unit 3, and a battery sampling unit 4, the battery sampling unit 1 is configured to collect state information of the battery module 1, the battery sampling unit 2 is configured to collect state information of the battery module 2, the battery sampling unit 3 is configured to collect state information of the battery module, and the battery sampling unit 4 is configured to collect state information of the battery module 4.
When the battery sampling unit can acquire the state information of the battery module and determine that the state information is in an abnormal state, a wake-up signal can be sent to the main controller 101. After receiving the wake-up signal sent by the battery sampling unit, the main controller 101 may switch from the sleep state to the wake-up state, receive the state information sent by the battery sampling unit, and output the state information.
When sending the wake-up signal to the bridge chip 1013, the battery sampling module 102 may send the wake-up signal to the bridge chip 1013 by using a ring communication method, where the ring communication method may include forward communication and backward communication, for example, as shown in fig. 3, if the communication from the battery module 1 to the battery module 4 is forward communication, the communication from the battery module 4 to the battery module 1 is backward communication. If the battery sampling module 102 sends the wake-up signal to the bridge chip 1013 in a forward communication manner, the battery sampling unit may send the wake-up signal to the battery sampling unit 2, the battery sampling unit 2 sends the wake-up signal to the battery sampling unit 3, the battery sampling unit 3 sends the wake-up signal to the battery sampling unit 4, and the battery sampling unit 4 sends the wake-up signal to the bridge chip 1013.
After the battery sampling unit 4 sends the wake-up signal to the bridge chip 1013, the status information of the battery pack 103 may be sent to the bridge chip 1013 by using a ring communication method. If the battery sampling module 102 sends the state information of the battery pack 103 in a reverse communication manner, after the battery sampling unit 4 collects the state information of the battery module 4, the state information of the battery module 4 may be sent to the battery sampling unit 3, the battery unit 3 sends the state information of the battery module 4 and the state information of the battery module 3 to the battery sampling unit 2, the battery sampling unit 2 sends the state information of the battery module 4, the state information of the battery module 3, and the state information of the battery module 2 to the battery sampling unit 1, and the battery sampling unit 1 sends the state information of the battery module 4, the state information of the battery module 3, the state information of the battery module 2, and the state information of the battery module 1 to the bridge chip 1013.
The battery sampling unit may determine state information of the battery module according to a temperature or a voltage of each electric core in the battery module, for example, the battery sampling unit may collect the temperature of each electric core in the battery module, and determine that the state information of the electric core is an abnormal state when the temperature of the electric core exceeds a preset temperature threshold; the battery sampling unit can also acquire the voltage of each battery cell, and determine that the state information of the battery cell is in an abnormal state under the condition that the voltage of the battery cell exceeds a preset voltage threshold; the battery sampling unit may also determine the state information of the battery module through other manners of the related art, which is not limited in this disclosure.
After receiving the state information of the four battery modules sent by the battery sampling unit 1, the bridge chip 1013 may send a wake-up signal to the power management module 1011, and the power management module 1011 enters a working state after receiving the wake-up signal, so that the power management module 1011 may supply power to the single chip microcomputer 1012, so as to enable the single chip microcomputer 1012 to enter the working state. The bridge chip 1013 may send the status information of the four battery modules to the single chip microcomputer 1012 after determining that the single chip microcomputer 1012 enters the working status, and the single chip microcomputer 1012 may output the status information after receiving the status information of the four battery modules. The state information of the battery module sent by the battery sampling unit may be a fault code, for example, when the state information is an abnormal state, the battery sampling unit may send a fault code, for example, "1", to the bridge chip 1013.
It should be noted that, the bridge chip 1013 may wake up the power management module 1011 after receiving the status information of the battery pack 103 sent by the battery sampling module 102; the bridge chip 1013 may wake up the power management module 1011 after receiving the wake-up signal sent by the battery sampling module 102, and the disclosure does not limit the time for waking up the power management module.
In addition, if the state information of the battery pack 103 is in an abnormal state, it may be that only one of the battery cells in one of the battery modules in the battery pack 103 fails, so that, for the convenience of a user to check the failure condition, the battery sampling module 102 is further configured to send, to the bridge chip 1013, an identifier of the battery cell whose state information is in the abnormal state, when the state information of the battery pack 103 is in the abnormal state. In this way, after the identifier of the failed battery cell is sent to the single chip microcomputer 1012 by the bridge chip 1013 and the single chip microcomputer 1012 outputs the identifier of the failed battery cell, the user can detect the failed battery cell, so that the efficiency of solving the battery cell failure can be improved.
It should be noted that, the battery sampling module 102 may send the identifier of the failed battery cell to the bridge chip 1013 at the same time when sending the status information of the battery pack 103; in addition, the bridge chip 1013 may send a cell identification request message to the battery sampling module 102 after receiving the status information of the battery pack 103 sent by the battery sampling module 102, and the battery sampling module sends the identification of the failed cell to the bridge chip 1013 after receiving the cell identification request message.
After the main controller 101 outputs the status information of the battery pack 103, the main controller 101 may re-enter the sleep state, so that the battery energy of the vehicle may be saved.
In a preferred embodiment, the battery sampling module 102 may periodically collect the status information of the battery pack 103, in which case, the battery sampling module 102 may periodically wake up by an internal timer to collect the status information of the battery pack 103. Because the battery sampling module 102 is directly connected to the battery pack 103, the battery pack 103 can directly provide power, so as to implement the real-time standby periodic self-wake-up of the battery sampling module 102.
Through the system, the battery sampling module wakes up the main controller under the condition that the acquired state information of the battery pack is determined to be in an abnormal state, and outputs the state information through the main controller, so that the state of the battery pack can be monitored when the battery management system is in a dormant state, and safety accidents can be reduced.
Fig. 4 is a flowchart illustrating a method for monitoring a cell fault according to an exemplary embodiment of the present disclosure, where the method is applied to a main controller in a system for monitoring a cell fault, and the system for monitoring a cell fault includes: the battery sampling module is respectively connected with the main controller and the battery pack. As shown in fig. 4, the method includes:
s401, receiving the state information of the battery pack sent by the battery sampling module when the battery sampling module determines that the state information of the battery pack is in an abnormal state and the main controller is awakened.
In this step, when the vehicle is in a stopped state, the main controller may be in a dormant state, and in this case, the battery sampling module may be controlled to collect the state information of the battery pack in real time, and in a case where it is determined that the state information is in an abnormal state, the state information may be sent to the main controller.
In one possible implementation manner, the main controller may include a power management module, a single chip microcomputer, and a bridge chip, where the power management module is connected to the single chip microcomputer and the bridge chip, respectively, and the single chip microcomputer is connected to the bridge chip; the bridge chip comprises a communication circuit and a wake-up circuit, the communication circuit is respectively connected with the wake-up circuit, the battery sampling module, the power management module and the single chip microcomputer, and the wake-up circuit is connected with the communication circuit and the power management module. Therefore, the wake-up circuit can receive the wake-up signal sent by the battery sampling module and wake up the communication circuit according to the wake-up signal. Therefore, after the bridge chip is awakened, the state information of the battery pack sent by the battery sampling module can be received through the bridge chip. The mode of acquiring the state information of the battery pack by the battery sampling module may refer to the above acquisition mode in the system for monitoring the battery core fault, and is not described herein again.
S402, outputting the state information.
In this step, after the bridge chip receives the state information of the battery pack sent by the battery sampling module, the bridge chip can wake up the power management module, and after the power management module is woken up, the bridge chip sends the state information to the single chip microcomputer, and the single chip microcomputer outputs the state information. The mode of outputting the state information by the main controller may refer to the mode of outputting the state information in the system for monitoring the battery core fault, and is not described herein again.
After the main controller outputs the state information of the battery pack, the main controller can enter the dormant state again, so that the battery energy of the vehicle can be saved.
By adopting the method, under the condition that the battery sampling module determines that the acquired state information of the battery pack is in an abnormal state, the main controller can be awakened, and the state information is output through the main controller, so that the state of the battery pack can be monitored when the battery management system is in a dormant state, and the occurrence of safety accidents can be reduced.
FIG. 5 is a schematic diagram of a vehicle according to an exemplary embodiment. As shown in fig. 5, the vehicle includes the above-described system for monitoring cell failure.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure. It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A system for monitoring cell faults, the system comprising: the battery sampling module is respectively connected with the main controller and the battery pack;
the battery sampling module is used for acquiring state information of the battery pack, awakening the main controller and sending the state information to the main controller under the condition that the state information is determined to be in an abnormal state and the main controller is in a dormant state;
and the main controller is used for receiving the state information of the battery pack sent by the battery sampling module after being awakened and outputting the state information.
2. The system of claim 1, wherein the main controller comprises a power management module, a single chip microcomputer and a bridge chip, the power management module is respectively connected with the single chip microcomputer and the bridge chip, and the single chip microcomputer is connected with the bridge chip;
the battery sampling module is further configured to wake up the bridge chip and send the state information to the bridge chip when it is determined that the state information of the battery pack is in an abnormal state;
the bridging chip is used for awakening the power management module after being awakened and sending the received state information sent by the battery sampling module to the single chip microcomputer;
and the single chip microcomputer is used for receiving the state information sent by the bridging chip and outputting the state information after the power management module is awakened.
3. The system of claim 2, wherein the bridge chip comprises a communication circuit and a wake-up circuit, the communication circuit is respectively connected with the wake-up circuit, the battery sampling module, the power management module and the single chip microcomputer, and the wake-up circuit is connected with the communication circuit and the power management module;
the battery sampling module is also used for sending a wake-up signal to the wake-up circuit;
the wake-up circuit is used for receiving the wake-up signal sent by the battery sampling module and waking up the communication circuit according to the wake-up signal;
and the communication circuit is used for respectively carrying out data transmission with the battery sampling module, the power management module and the singlechip.
4. The system of claim 1, wherein the battery sampling module is further configured to send, to the main controller, an identifier of a cell whose state information is an abnormal state, when the state information of the battery pack is the abnormal state.
5. The system of claim 1, wherein the battery sampling module is configured to periodically collect status information of the battery pack.
6. The method for monitoring the battery cell fault is applied to a main controller in a system for monitoring the battery cell fault, and the system for monitoring the battery cell fault comprises the following steps: the battery sampling module is respectively connected with the main controller and the battery pack; the method comprises the following steps:
receiving the state information of the battery pack sent by the battery sampling module under the condition that the battery sampling module determines that the state information of the battery pack is in an abnormal state and the main controller is awakened;
and outputting the state information.
7. The method according to claim 6, wherein the main controller comprises a power management module, a single chip microcomputer and a bridge chip, wherein the power management module is respectively connected with the single chip microcomputer and the bridge chip, and the single chip microcomputer is connected with the bridge chip; the receiving the state information of the battery pack sent by the battery sampling module comprises:
after the bridge chip is awakened, receiving the state information of the battery pack sent by the battery sampling module through the bridge chip;
the outputting the state information includes:
awakening the power management module through the bridge chip;
after the power management module is awakened, the state information is sent to the single chip microcomputer through the bridge chip;
and outputting the state information through the singlechip.
8. The method according to claim 7, wherein the bridge chip comprises a communication circuit and a wake-up circuit, the communication circuit is respectively connected with the wake-up circuit, the battery sampling module, the power management module and the single chip microcomputer, and the wake-up circuit is connected with the communication circuit and the power management module; before the receiving, by the bridge chip, the status information of the battery pack sent by the battery sampling module, the method further includes:
receiving a wake-up signal sent by the battery sampling module through the wake-up circuit;
and awakening the communication circuit according to the awakening signal.
9. The method of claim 6, wherein after said outputting said state information, said method further comprises:
entering a sleep state.
10. A vehicle comprising the system for monitoring cell failure of any of claims 1 to 5.
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| CN114993486A (en) * | 2022-05-25 | 2022-09-02 | 中国第一汽车股份有限公司 | New energy automobile early warning method and system |
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