CN114290907B - Method and device for processing abnormal temperature of vehicle battery - Google Patents
Method and device for processing abnormal temperature of vehicle battery Download PDFInfo
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- CN114290907B CN114290907B CN202210095586.9A CN202210095586A CN114290907B CN 114290907 B CN114290907 B CN 114290907B CN 202210095586 A CN202210095586 A CN 202210095586A CN 114290907 B CN114290907 B CN 114290907B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The embodiment of the invention relates to the field of vehicle control, in particular to a method and a device for processing abnormal temperature of a vehicle battery. And if the first battery temperature data exceeds the fault threshold, determining a first time area according to the first time, determining whether each battery temperature data in the first time area has abnormal characteristics of the temperature sensor, if so, sending a first control signal to the whole vehicle controller, wherein the first control signal is used for indicating the whole vehicle controller to keep the working state of the vehicle battery and sending fault information of the temperature sensor, and if not, sending a second control signal to the whole vehicle controller, and the second control signal is used for indicating the whole vehicle controller to disconnect the power supply of the vehicle battery to the vehicle. Different treatments are carried out on the vehicle battery based on the judgment result of the abnormal characteristics, so that power interruption caused by false alarm of the battery temperature can be avoided, and driving safety and user experience are improved.
Description
Technical Field
The present invention relates to the field of vehicle control, and in particular, to a method and apparatus for processing abnormal temperature of a vehicle battery.
Background
In recent years, vehicle battery systems, like gasoline and conventional fuel vehicles, are important or sole sources of energy for electric vehicles. Consists of a vehicle battery, an electrical circuit and an electronic control unit (battery management system), and associated electrical and structural components. Traditional vehicle batteries monitor the battery temperature by welding a negative temperature coefficient (Negative Temperature Coefficient, NTC) temperature sensor to the collection line surface, and fixing with glue. Therefore, the impact of other structural members on the NTC temperature sensor caused by vibration of a vehicle battery, such as extrusion and collision, is avoided in the use process, the NTC temperature sensor is extruded or collided by external force to cause instant failure, or after the sealing glue of the NTC temperature sensor is filled in a high-humidity environment, silver ions migrate to cause the abnormality of the NTC temperature sensor. The battery management system (Battery Management System, BMS) may shut down the vehicle battery after receiving erroneous battery temperature data, which is erroneous data outputted by the NTC temperature sensor due to malfunction, but is not an actual battery temperature, resulting in power interruption.
Disclosure of Invention
The embodiment of the invention provides a method and a device for processing abnormal temperature of a vehicle battery, which are used for processing the vehicle battery differently based on the judgment of preset abnormal characteristics when the battery temperature exceeding a threshold value sent by an NTC temperature sensor is received, so that power interruption caused by the abnormality of the NTC temperature sensor can be avoided, and driving safety and user experience are improved.
In a first aspect, an embodiment of the present invention provides a method for handling abnormal temperature of a battery of a vehicle, which is characterized in that the method is applied to a BMS, and includes:
receiving first battery temperature data sent by a temperature sensor at a first time;
if the first battery temperature data exceeds a fault threshold, determining a first time zone according to the first time, wherein the first time zone comprises the first time;
determining whether each battery temperature data in the first time region has a temperature sensor abnormality characteristic;
if the temperature data of each battery in the first time zone has abnormal characteristics of the temperature sensor, a first control signal is sent to a whole vehicle controller (Vehicle control unit, VCU), and the first control signal is used for indicating the VCU to keep the working state of the battery of the vehicle and sending out fault information of the temperature sensor;
and if the battery temperature data in the first time zone do not have the abnormal characteristic of the temperature sensor, sending a second control signal to the VCU, wherein the second control signal is used for indicating the VCU to disconnect the power supply of the vehicle battery to the vehicle.
In one implementation, the first battery temperature data exceeds a fault threshold, comprising:
determining a charge-discharge state of a vehicle battery;
and if the vehicle battery is in a discharging state and the first battery temperature data is greater than a discharging fault threshold, or if the vehicle battery is in a charging state and the first battery temperature data is greater than a charging fault threshold, determining that the first battery temperature data exceeds the fault threshold.
In one implementation, each battery temperature data within the first time region has a temperature sensor anomaly characteristic if each battery temperature data within the first time region meets one or more of the following, including:
battery temperature data smaller than a low temperature threshold or higher than a high temperature threshold exists in the first time region, and the duration exceeds the first threshold;
the difference between two battery temperature data with continuous sampling time is larger than a second threshold value;
the average value of the battery temperature data in the first time area is Tavg, and the battery temperature data with the absolute value of the difference value larger than a third threshold value between the Tavg and the battery temperature data exists in the first time area;
a first sub-period exists in the first time zone, all battery temperature data in the first sub-period is greater than a fourth threshold, and the temperature rise rate of the first sub-period is greater than a fifth threshold.
In one implementation, sending a second control signal to the VCU, the second control signal being configured to instruct the VCU to disconnect power from the vehicle battery to the vehicle, includes:
transmitting a second control signal to the VCU, so that the VCU transmits a battery disconnection instruction to the BMS after receiving the second control signal;
and after receiving the battery disconnection instruction, disconnecting the power supply of the vehicle battery to the vehicle.
In one implementation, after receiving the battery disconnection instruction, disconnecting the power supply from the vehicle battery to the vehicle includes:
and after the battery disconnection instruction is received, periodically reducing the power of the vehicle battery by taking a sixth threshold value as an interval until the power supply of the vehicle battery to the vehicle is disconnected.
In one implementation, the second control signal is further configured to instruct the VCU to determine that the vehicle battery is a secondary failure and illuminate a battery failure indicator.
In one implementation, the first control signal is further configured to instruct the VCU to determine that the vehicle battery is a primary failure and illuminate a battery overheat indicator.
In a second aspect, an embodiment of the present invention provides a vehicle battery temperature abnormality processing apparatus, which is applied to a BMS, including:
the receiving module is used for receiving first battery temperature data sent by the temperature sensor at the first time;
a determining module, configured to determine a first time area according to the first time if the first battery temperature data exceeds a fault threshold, where the first time area includes the first time;
the judging module is used for determining whether each battery temperature data in the first time area has abnormal characteristics of a temperature sensor;
the first sending module is used for sending a first control signal to the whole vehicle controller VCU if the temperature data of each battery in the first time area has abnormal characteristics of the temperature sensor, wherein the first control signal is used for indicating the VCU to keep the working state of the battery of the vehicle and sending out fault information of the temperature sensor;
and the second sending module is used for sending a second control signal to the VCU if the temperature data of each battery in the first time zone does not have the abnormal characteristic of the temperature sensor, and the second control signal is used for indicating the VCU to disconnect the power supply of the vehicle battery to the vehicle.
In a third aspect, an embodiment of the present invention provides an electronic device, where the device is deployed in a BMS, including:
at least one processor; and
at least one memory communicatively coupled to the processor, wherein:
the memory stores program instructions executable by the processor, the processor invoking the program instructions capable of performing the method as provided in the first aspect.
In a fourth aspect, embodiments of the present invention provide a computer-readable storage medium storing computer instructions that cause a computer to perform the method as provided in the first aspect.
In the embodiment of the invention, first battery temperature data sent by a temperature sensor at a first time is received, if the first battery temperature data exceeds a fault threshold value, a first time area is determined according to the first time, the first time area comprises the first time, whether each battery temperature data in the first time area has abnormal characteristics of the temperature sensor or not is determined, if yes, a first control signal is sent to the whole vehicle controller and used for indicating the whole vehicle controller to keep the working state of a vehicle battery and send fault information of the temperature sensor, and if not, a second control signal is sent to the whole vehicle controller and used for indicating the whole vehicle controller to disconnect the power supply of the vehicle battery to the vehicle. Different treatments are carried out on the vehicle battery based on the judgment result of the abnormal characteristics, so that power interruption caused by false alarm of the battery temperature can be avoided, and driving safety and user experience are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flowchart of a method for handling abnormal temperature of a vehicle battery according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a device for handling abnormal temperature of a vehicle battery according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
For a better understanding of the technical solutions of the present specification, the following detailed description of the embodiments of the present invention refers to the accompanying drawings.
It should be understood that the described embodiments are only some, but not all, of the embodiments of the present description. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present disclosure.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the description. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Fig. 1 is a flowchart of a method for handling abnormal temperature of a vehicle battery according to an embodiment of the present invention. The method may be used for a BMS, and as shown in fig. 1, may include:
step 101, first battery temperature data sent by a temperature sensor at a first time is received.
The temperature sensor detects the battery temperature of the vehicle battery in real time and transmits battery temperature data to the BMS.
Step 102, if the first battery temperature data exceeds the failure threshold, determining a first time zone according to a first time, the first time zone containing the first time.
Under normal conditions, the battery temperature of the vehicle battery can change in a reasonable interval, if the vehicle battery fails, the battery temperature may exceed the reasonable interval, and the BMS needs to shut down the vehicle battery in order to protect the safety of users and vehicles. However, if the NTC temperature sensor fails, the BMS may receive an erroneous battery temperature, and in order to cope with this, the BMS determines a first time zone and makes further decisions based on the battery temperature data in the first time zone when detecting that the battery temperature exceeds the failure threshold.
In some embodiments, the BMS's judgment that the first battery temperature data exceeds the fault threshold may be classified into a charge and discharge case, and if the vehicle battery is in a discharge state and the first battery temperature data is greater than the discharge fault threshold, or if the vehicle battery is in a charge state and the first battery temperature data is greater than the charge fault threshold, it is determined that the first battery temperature data exceeds the fault threshold.
Step 103, determining whether each battery temperature data in the first time region has a temperature sensor abnormality characteristic.
In some embodiments, in order to detect whether the NTC temperature sensor is malfunctioning, the BMS may preset some abnormal characteristics, and if each battery temperature data in the first time zone satisfies one or more items, determine that each battery temperature data in the first time zone has a temperature sensor abnormal characteristic, may specifically include: battery temperature data below a low temperature threshold or above a high temperature threshold exists within the first time region and the duration exceeds the first threshold; the difference between two battery temperature data with continuous sampling time is larger than a second threshold value; the average value of the battery temperature data in the first time area is Tavg, and the battery temperature data with the absolute value of the difference value of Tavg larger than a third threshold value exists in the first time area; a first sub-period exists in the first time zone, all battery temperature data in the first sub-period is greater than a fourth threshold, and the rate of rise of temperature in the first sub-period is greater than a fifth threshold. If the BMS does not find any abnormal characteristic of the temperature sensor, the NTC temperature sensor is indicated to work normally, and the vehicle battery is out of order.
For example, the low temperature threshold may be set to-40 degrees, the high temperature threshold may be set to 125 degrees, the first threshold may be set to 3 seconds, the second threshold may be set to 5 degrees, the third threshold may be set to 20 degrees, the fourth threshold may be set to 50 degrees, and the fifth threshold may be set to 1 degree/second.
When the BMS judges the preset abnormal characteristics, normal communication of the bus inside the vehicle is required to be ensured, and the temperature sampling circuit has no fault.
Step 104, if each battery temperature data in the first time zone has abnormal characteristics of the temperature sensor, a first control signal is sent to the VCU, and the first control signal is used for indicating the VCU to keep the working state of the vehicle battery and send out fault information of the temperature sensor.
The BMS transmits corresponding control signals to the VCU based on the judging result of the abnormal characteristics of the temperature sensor so as to process different faults. If the BMS determines that the NTC temperature sensor fails, the power supply of the vehicle battery to the vehicle is not required to be disconnected, and only a first control signal is required to be sent to the VCU so that the VCU sends out temperature sensor failure information, and the user is reminded that the NTC temperature sensor fails and overhauls in time.
In some embodiments, the VCU issuing the temperature sensor fault information may include determining that the vehicle battery is a primary fault and illuminating a battery overheat indicator.
Step 105, if each battery temperature data in the first time zone does not have the abnormal characteristic of the temperature sensor, a second control signal is sent to the VCU, where the second control signal is used to instruct the VCU to disconnect the power supply from the vehicle battery to the vehicle.
If the BMS determines that the vehicle battery fails, the power supply of the vehicle battery to the vehicle needs to be disconnected in order to ensure the safety of a user. The BMS can send a second control signal to the VCU, the VCU can send a battery disconnection instruction to the BMS after receiving the second control signal, and the BMS disconnects the power supply of the vehicle battery to the vehicle after receiving the battery disconnection instruction.
In some embodiments, the VCU may further determine that the vehicle battery is a secondary failure and illuminate a battery failure indicator after receiving the second control signal, prompting the user to overhaul the vehicle battery.
In some embodiments, after the BMS receives the battery disconnection command, the BMS periodically reduces the power of the vehicle battery at intervals of a sixth threshold until the power of the vehicle battery is disconnected from the vehicle. For example, the BMS reduces the power of the vehicle battery once every 3 seconds, gradually reducing the power of the vehicle battery to 0 in 30 seconds.
In the embodiment of the invention, the BMS receives first battery temperature data sent by the temperature sensor at a first time, if the first battery temperature data exceeds a fault threshold value, a first time area is determined according to the first time, the first time area comprises the first time, then whether each battery temperature data in the first time area has abnormal characteristics of the temperature sensor is determined, if yes, a first control signal is sent to the whole vehicle controller and used for indicating the whole vehicle controller to keep the working state of a vehicle battery and send fault information of the temperature sensor, and if not, a second control signal is sent to the whole vehicle controller and used for indicating the whole vehicle controller to disconnect the power supply of the vehicle battery to the vehicle. Different treatments are carried out on the vehicle battery based on the judgment result of the abnormal characteristics, so that power interruption caused by false alarm of the battery temperature can be avoided, and driving safety and user experience are improved.
Fig. 2 is a schematic structural diagram of a device for handling abnormal temperature of a vehicle battery according to an embodiment of the present invention. The vehicle battery temperature abnormality processing device in the embodiment of the invention can be used as vehicle battery temperature abnormality processing equipment to realize the vehicle battery temperature abnormality processing method provided by the embodiment of the invention. As shown in fig. 2, the above-described vehicle battery temperature abnormality processing apparatus may include: the device comprises a receiving module 210, a determining module 220, a judging module 230, a first transmitting module 240 and a second transmitting module 250.
A receiving module 210, configured to receive first battery temperature data sent by the temperature sensor at a first time;
a determining module 220, configured to determine a first time area according to the first time if the first battery temperature data exceeds a failure threshold, where the first time area includes the first time;
a judging module 230, configured to determine whether each battery temperature data in the first time region has an abnormal characteristic of a temperature sensor;
the first sending module 240 is configured to send a first control signal to the vehicle controller VCU if each battery temperature data in the first time region has an abnormal characteristic of a temperature sensor, where the first control signal is used to instruct the VCU to maintain a working state of a vehicle battery and send out fault information of the temperature sensor;
and a second sending module 250, configured to send a second control signal to the VCU if each battery temperature data in the first time region does not have a temperature sensor abnormality feature, where the second control signal is used to instruct the VCU to disconnect the power supply from the vehicle battery to the vehicle.
The device for processing abnormal temperature of a vehicle battery provided by the embodiment shown in fig. 2 can be used for executing the technical scheme of the method embodiment shown in fig. 1 in the specification, and the implementation principle and technical effect can be further described with reference to the related description in the method embodiment.
Fig. 3 shows a block diagram of an exemplary electronic device suitable for use in implementing embodiments of the invention. The electronic device shown in fig. 3, which is just an example, should not impose any limitation on the functions and the scope of use of the embodiment of the present invention, may be deployed in the BMS.
As shown in fig. 3, the electronic device is in the form of a general purpose computing device. Components of an electronic device may include, but are not limited to: one or more processors 310, a memory 330, and a communication bus 340 that connects the various system components (including the memory 330 and the processing unit 310).
Communication bus 340 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include industry Standard architecture (Industry Standard Architecture; hereinafter ISA) bus, micro channel architecture (Micro Channel Architecture; hereinafter MAC) bus, enhanced ISA bus, video electronics standards Association (Video Electronics Standards Association; hereinafter VESA) local bus, and peripheral component interconnect (Peripheral Component Interconnection; hereinafter PCI) bus.
Electronic devices typically include a variety of computer system readable media. Such media can be any available media that can be accessed by the electronic device and includes both volatile and nonvolatile media, removable and non-removable media.
Memory 330 may include computer system readable media in the form of volatile memory, such as random access memory (Random Access Memory; hereinafter: RAM) and/or cache memory. The electronic device may further include other removable/non-removable, volatile/nonvolatile computer system storage media. Although not shown in fig. 3, a disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk (e.g., a compact disk read only memory (Compact Disc Read Only Memory; hereinafter CD-ROM), digital versatile read only optical disk (Digital Video Disc Read Only Memory; hereinafter DVD-ROM), or other optical media) may be provided. In such cases, each drive may be coupled to communication bus 340 via one or more data medium interfaces. Memory 330 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of embodiments of the invention.
A program/utility having a set (at least one) of program modules may be stored in the memory 330, such program modules include, but are not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules typically carry out the functions and/or methods of the embodiments described herein.
The electronic device may also communicate with one or more external devices, with one or more devices that enable a user to interact with the electronic device, and/or with any devices (e.g., network cards, modems, etc.) that enable the electronic device to communicate with one or more other computing devices. Such communication may occur through communication interface 320. Moreover, the electronic device may also communicate with one or more networks (e.g., local area network (Local Area Network; hereinafter: LAN), wide area network (Wide Area Network; hereinafter: WAN) and/or a public network, such as the Internet) via a network adapter (not shown in FIG. 3) that may communicate with other modules of the electronic device via communication bus 340. It should be appreciated that although not shown in fig. 3, other hardware and/or software modules may be used in connection with an electronic device, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, disk arrays (Redundant Arrays of Independent Drives; hereinafter RAID) systems, tape drives, data backup storage systems, and the like.
The processor 310 executes various functional applications and data processing by running programs stored in the memory 330, for example, implementing the method for processing abnormal temperature of a vehicle battery according to the embodiment of the present invention.
The embodiment of the invention also provides a computer readable storage medium, which stores computer instructions for causing the computer to execute the method for abnormal temperature of the vehicle battery provided by the embodiment of the invention.
Any combination of one or more computer readable media may be utilized as the above-described computer readable storage media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory; EPROM) or flash Memory, an optical fiber, a portable compact disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and additional implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order from that shown or discussed, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the elements is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.
Claims (8)
1. A vehicle battery temperature abnormality processing method, characterized in that the method is applied to a battery management system BMS, comprising:
receiving first battery temperature data sent by a temperature sensor at a first time;
if the first battery temperature data exceeds a fault threshold, determining a first time zone according to the first time, wherein the first time zone comprises the first time;
determining whether each battery temperature data in the first time region has a temperature sensor abnormality characteristic;
if the temperature data of each battery in the first time zone has abnormal characteristics of the temperature sensor, a first control signal is sent to a Vehicle Control Unit (VCU), and the first control signal is used for indicating the VCU to keep the working state of the battery of the vehicle and sending out fault information of the temperature sensor;
if the temperature data of each battery in the first time zone does not have the abnormal characteristic of the temperature sensor, a second control signal is sent to the VCU, and the second control signal is used for indicating the VCU to disconnect the power supply of the vehicle battery to the vehicle;
the first battery temperature data exceeding a fault threshold comprises:
determining a charge-discharge state of a vehicle battery;
if the vehicle battery is in a discharging state and the first battery temperature data is greater than a discharging failure threshold, or if the vehicle battery is in a charging state and the first battery temperature data is greater than a charging failure threshold, determining that the first battery temperature data exceeds a failure threshold;
each battery temperature data within the first time zone has a temperature sensor anomaly characteristic if each battery temperature data within the first time zone meets one or more of the following:
battery temperature data smaller than a low temperature threshold or higher than a high temperature threshold exists in the first time region, and the duration exceeds the first threshold;
the difference between two battery temperature data with continuous sampling time is larger than a second threshold value;
the average value of the battery temperature data in the first time area is Tavg, and the battery temperature data with the absolute value of the difference value larger than a third threshold value between the Tavg and the battery temperature data exists in the first time area;
a first sub-period exists in the first time zone, all battery temperature data in the first sub-period is greater than a fourth threshold, and the temperature rise rate of the first sub-period is greater than a fifth threshold.
2. The method of claim 1, wherein sending a second control signal to the VCU, the second control signal for instructing the VCU to disconnect power from the vehicle battery to the vehicle, comprises:
transmitting a second control signal to the VCU, so that the VCU transmits a battery disconnection instruction to the BMS after receiving the second control signal;
and after receiving the battery disconnection instruction, disconnecting the power supply of the vehicle battery to the vehicle.
3. The method of claim 2, wherein disconnecting the power from the vehicle battery to the vehicle upon receiving the battery disconnection command comprises:
and after the battery disconnection instruction is received, periodically reducing the power of the vehicle battery by taking a sixth threshold value as an interval until the power supply of the vehicle battery to the vehicle is disconnected.
4. The method of claim 1, wherein the second control signal is further used to instruct the VCU to determine that the vehicle battery is a secondary fault and to illuminate a battery fault indicator light.
5. The method of claim 1, wherein the first control signal is further used to instruct the VCU to determine that the vehicle battery is a primary fault and illuminate a battery overheat indicator light.
6. A vehicle battery temperature anomaly handling device, the device being deployed in a BMS, comprising:
the receiving module is used for receiving first battery temperature data sent by the temperature sensor at the first time;
a determining module, configured to determine a first time area according to the first time if the first battery temperature data exceeds a fault threshold, where the first time area includes the first time;
the judging module is used for determining whether each battery temperature data in the first time area has abnormal characteristics of a temperature sensor;
the first sending module is used for sending a first control signal to the whole vehicle controller VCU if the temperature data of each battery in the first time area has abnormal characteristics of the temperature sensor, wherein the first control signal is used for indicating the VCU to keep the working state of the battery of the vehicle and sending out fault information of the temperature sensor;
the second sending module is used for sending a second control signal to the VCU if the temperature data of each battery in the first time area does not have the abnormal characteristic of the temperature sensor, and the second control signal is used for indicating the VCU to disconnect the power supply of the vehicle battery to the vehicle;
the first battery temperature data exceeding a fault threshold comprises:
determining a charge-discharge state of a vehicle battery;
if the vehicle battery is in a discharging state and the first battery temperature data is greater than a discharging failure threshold, or if the vehicle battery is in a charging state and the first battery temperature data is greater than a charging failure threshold, determining that the first battery temperature data exceeds a failure threshold;
each battery temperature data within the first time zone has a temperature sensor anomaly characteristic if each battery temperature data within the first time zone meets one or more of the following:
battery temperature data smaller than a low temperature threshold or higher than a high temperature threshold exists in the first time region, and the duration exceeds the first threshold;
the difference between two battery temperature data with continuous sampling time is larger than a second threshold value;
the average value of the battery temperature data in the first time area is Tavg, and the battery temperature data with the absolute value of the difference value larger than a third threshold value between the Tavg and the battery temperature data exists in the first time area;
a first sub-period exists in the first time zone, all battery temperature data in the first sub-period is greater than a fourth threshold, and the temperature rise rate of the first sub-period is greater than a fifth threshold.
7. An electronic device, wherein the electronic device is deployed in a BMS, comprising:
at least one processor; and
at least one memory communicatively coupled to the processor, wherein:
the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1-5.
8. A computer readable storage medium storing computer instructions for causing a computer to perform the method of any one of claims 1 to 5.
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| CN108445409A (en) * | 2018-03-29 | 2018-08-24 | 北京智行鸿远汽车有限公司 | A kind of diagnostic method detecting battery pack pressure difference failure for pure electric vehicle |
| CN112140888A (en) * | 2019-06-28 | 2020-12-29 | 株式会社电装 | Control device for vehicle-mounted power supply device |
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| JP6419046B2 (en) * | 2015-09-15 | 2018-11-07 | 本田技研工業株式会社 | Failure type determination device for power storage system |
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| CN108445409A (en) * | 2018-03-29 | 2018-08-24 | 北京智行鸿远汽车有限公司 | A kind of diagnostic method detecting battery pack pressure difference failure for pure electric vehicle |
| CN112140888A (en) * | 2019-06-28 | 2020-12-29 | 株式会社电装 | Control device for vehicle-mounted power supply device |
| JP2021007281A (en) * | 2019-06-28 | 2021-01-21 | 株式会社デンソー | Controller of on-vehicle power supply device |
| CN112172528A (en) * | 2020-09-29 | 2021-01-05 | 蜂巢能源科技有限公司 | Method and device for identifying false alarm of thermal runaway of vehicle battery core, storage medium and vehicle |
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