Battery abnormity early warning method, battery, vehicle and storage medium

Abstract

The invention relates to the technical field of batteries, and provides a battery abnormity early warning method, a battery, a vehicle and a computer readable storage medium. According to the battery abnormity early warning method, the first type of internal environment parameters of the battery are obtained, and the first preset condition is used for describing the critical condition of the abnormal state of the battery, so that when the first type of internal environment parameters meet the first preset condition, it can be represented that the battery is about to enter the abnormal state at present. Furthermore, a second type of internal environment parameters, including the first type of internal environment parameters, of the battery can be further obtained, and when the second type of internal environment parameters meet a second preset condition, early warning information used for indicating battery abnormity is sent to the vehicle controller. Therefore, when the battery is abnormal, the abnormal early warning can be fed back to the vehicle controller in time, and a scheme capable of correctly and quickly realizing the abnormal early warning of the battery is provided.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and in particular relates to a battery abnormality warning method, a battery, a vehicle, and a computer-readable storage medium. Background Art

[0002] New energy vehicles are popular among users for their affordability and advanced intelligence. Currently, most new energy vehicles incorporate both a low-voltage battery and a power battery. Abnormal battery conditions, whether in the low-voltage or power battery, can directly impact vehicle operation. Therefore, providing early warning of battery abnormalities is a pressing technical challenge. Summary of the Invention

[0003] The purpose of this application is to provide a battery abnormality warning method, battery, vehicle and computer-readable storage medium, aiming to provide a solution that can correctly and quickly implement battery abnormality warning.

[0004] A first aspect of an embodiment of the present application provides a battery abnormality warning method, which is applied to a battery in a vehicle. The battery abnormality warning method includes:

[0005] Obtain the first type of internal environmental parameters of the battery;

[0006] When the first type of internal environmental parameters meet a first preset condition, obtaining a second type of internal environmental parameters of the battery, where the second type of internal environmental parameters at least include the first type of internal environmental parameters; wherein the first preset condition is used to describe a critical condition that the battery is in an abnormal state;

[0007] When the second type of internal environmental parameters meets the second preset condition, a warning message indicating battery abnormality is sent to the vehicle controller.

[0008] The embodiment of the present application provides a battery abnormality warning method, which obtains the first type of internal environmental parameters of the battery. Since the first preset condition is used to describe the critical condition of the battery being in an abnormal state, when the first type of internal environmental parameters meet the first preset condition, it can be characterized that the battery is about to enter an abnormal state. Then, the second type of internal environmental parameters of the battery including the first type of internal environmental parameters can be further obtained, and when the second type of internal environmental parameters meet the second preset condition, a warning message indicating battery abnormality is sent to the vehicle controller. In this way, when the battery is abnormal, an abnormal warning can be fed back to the vehicle controller in a timely manner, providing a solution that can correctly and quickly implement battery abnormality warning.

[0009] The second aspect of an embodiment of the present application provides a battery, a memory, a processor, and a computer program stored in the memory and runnable on an energy storage inverter. When the processor executes the computer program, the steps of the battery abnormality warning method provided in the first aspect above are implemented.

[0010] A third aspect of an embodiment of the present application provides a vehicle, a memory, a processor, and a computer program stored in the memory and executable on the vehicle. When the processor executes the computer program, the steps of the battery abnormality warning method provided in the first aspect are implemented.

[0011] A fourth aspect of an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the battery abnormality warning method provided in the first aspect are implemented.

[0012] It can be understood that the beneficial effects of the second to fourth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A flowchart of a battery abnormality warning method according to an embodiment of the present application;

[0014] Figure 2 A flowchart of a battery abnormality warning method according to another embodiment of the present application;

[0015] Figure 3 A structural block diagram of a battery provided in an embodiment of the present application;

[0016] Figure 4 A structural block diagram of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0018] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0019] For example, new energy vehicles (NEVs) are popular among users due to their affordability and high level of intelligence. Currently, most NEVs incorporate both a low-voltage battery (LVB) and a power battery (PWR). Abnormal battery conditions, whether in the LVB or PWR, can directly impact vehicle operation. Therefore, providing early warning of battery abnormalities is a pressing technical challenge.

[0020] In order to solve the above technical problems, this embodiment provides a battery abnormality warning method, which obtains the first type of internal environmental parameters of the battery. Since the first preset condition is used to describe the critical condition of the battery in an abnormal state, when the first type of internal environmental parameters meet the first preset condition, it can be characterized that the battery is about to enter an abnormal state. Then, by further obtaining the second type of internal environmental parameters of the battery including the first type of internal environmental parameters, and when the second type of internal environmental parameters meet the second preset condition, a warning message indicating battery abnormality is sent to the vehicle controller. In this way, when the battery is abnormal, an abnormal warning can be fed back to the vehicle controller in a timely manner, providing a solution that can correctly and quickly implement battery abnormality warning.

[0021] The following describes a battery abnormality warning method provided by this embodiment in detail, taking the battery management system in the battery as the execution subject as an example through a specific implementation method. It is understood that in all embodiments of the application, the battery in the vehicle can be a low-voltage electromagnetic device used to provide low-voltage direct current in the vehicle, or it can be a power battery of the vehicle, or it can be a battery pack or energy storage device configured separately on the vehicle, without limitation. Figure 1 FIG1 shows a flow chart of a battery abnormality warning method according to an embodiment of the present application. Figure 1 As shown, the battery abnormality warning method includes the following steps:

[0022] 110: Obtain the first type of internal environmental parameters of the battery.

[0023] In 110 , the first type of internal environment parameters is used to describe the physical characteristics of the internal environment of the battery, and may specifically be the internal environment humidity and / or volatile organic compound (VOC) concentration in the battery.

[0024] In practical implementation, a metal oxide semiconductor sensor, such as a MOS sensor, can be used. The MOS sensor can be used to detect the VOC content in the environment. Since MOS sensors are sensitive to humidity and their resistance changes with humidity, the electrical signal output by the MOS sensor can also be used to represent the humidity within the battery.

[0025] As an embodiment, step 110 may include: periodically acquiring a first type of internal environmental parameter from an analog front end unit of the battery.

[0026] In this embodiment, the analog front-end unit can be used to summarize the internal environmental parameters of the battery, so the battery management system can periodically obtain the first type of internal environmental parameters from the analog front-end unit.

[0027] In a specific implementation, the analog front-end unit may include an analog front-end chip and an ADC sampling circuit. The ADC sampling circuit may be used to sample various physical quantities of the battery environment, such as the temperature and / or humidity inside the battery, and then send the sampling results to the analog front-end chip, which then sends the sampled humidity and / or VOC concentration to the battery management system.

[0028] Exemplarily, the battery management system periodically obtains the first type of internal environmental parameters from the analog front-end unit of the battery. Specifically, the battery management system can periodically obtain the first type of internal environmental parameters from the analog front-end unit by configuring a corresponding first timing task in the battery management system, or the battery management system can instruct the analog front-end unit to periodically send the first type of internal environmental parameters to the battery management system by instructing the analog front-end unit to perform a corresponding second timing task.

[0029] 120: When the first type of internal environmental parameters meet the first preset condition, obtain the second type of internal environmental parameters of the battery, where the second type of internal environmental parameters at least include the first type of internal environmental parameters.

[0030] In 120 , the first preset condition is used to describe a critical condition that the battery is in an abnormal state.

[0031] In this embodiment, since the second category of internal environmental parameters includes at least the first category of internal environmental parameters, and the second category of internal environmental parameters are obtained when the first category of internal environmental parameters meet the first preset conditions, the second category of internal environmental parameters can also be used as a basis for determining whether the battery is in an abnormal state after the battery internal environmental parameters meet the critical conditions for the battery to be in an abnormal state.

[0032] In a specific implementation, the second type of environmental parameters can be obtained in the same manner as the first type of environmental parameters. For example, the second type of internal environmental parameters can be periodically obtained from the analog front-end unit of the battery.

[0033] It should be noted that the second type of environmental parameter specifically refers to the battery internal environmental parameter obtained when the first type of internal environmental parameter meets the first preset condition. That is, in the case where the second type of environmental parameter and the first type of internal environmental parameter are both humidity and / or VOC concentration, the second type of environmental parameter is the battery internal environmental parameter obtained when the first type of internal environmental parameter meets the first preset condition, so the first type of environmental parameter and the second type of environmental parameter can also be understood as battery internal environmental parameters obtained at different times.

[0034] It is easy to understand that in all embodiments of the present application, since the first preset condition is used to describe the critical condition of the battery being in an abnormal state, when the first type of internal environmental parameter meets the first preset condition, the second type of internal environmental parameter of the battery is obtained, which can be used as a further determination of whether the battery is abnormal.

[0035] As an example, taking the first type of internal environmental parameter including the humidity in the battery as an example, the analog front-end unit of the battery can collect the humidity in the battery using a humidity sensor. In the case where the humidity in the battery is large, such as rainy weather, the analog front-end unit collects a large humidity in the battery, such as a humidity not less than a first humidity threshold, it is determined that the first type of internal environmental parameter meets the first preset condition, at this time, the second type of internal environmental parameter is obtained as a further determination of whether the battery is abnormal.

[0036] As another example, taking the first type of internal environmental parameter including the VOC concentration in the battery as an example, the analog front-end unit of the battery can collect the VOC concentration in the battery using a MOS sensor. In the case where the VOC concentration in the battery is large, such as slight leakage of the battery cooling liquid, slight release of the battery electrolyte, etc., the analog front-end unit collects a large VOC concentration in the battery, such as a VOC concentration not less than a first VOC concentration threshold, it is determined that the first type of internal environmental parameter meets the first preset condition, at this time, the second type of internal environmental parameter is obtained as a further determination of whether the battery is abnormal.

[0037] 130: When the second type of internal environmental parameter meets the second preset condition, send a warning information indicating that the battery is abnormal to the vehicle controller.

[0038] In 130, the second preset condition is used to describe that the battery is in an abnormal state and / or there is a fault, that is, the second preset condition is the condition for determining that the battery is in an abnormal state and / or there is a fault. The vehicle controller is the vehicle controller of the vehicle where the battery is located. The warning information generally refers to information that can prompt the user that the battery has an abnormality.

[0039] In this embodiment, upon receiving the warning information, the vehicle controller can output a prompt corresponding to the warning information in any existing manner. For example, the vehicle controller can notify the user that the battery is currently in an abnormal state and / or has a fault by displaying text, an icon, playing a language, or providing a prompt sound based on the warning information.

[0040] In conjunction with the previous example, let's take the second category of internal environmental parameters, including battery humidity, as an example. The battery's analog front-end unit (AFEU) can use a humidity sensor to detect humidity within the battery. For example, if the battery is experiencing significant coolant leakage or electrolyte release, and the AFE detects a humidity level no less than a second humidity threshold, the AFE will determine that the second category of internal environmental parameters meets the second preset condition. In this case, a warning message indicating a battery anomaly is sent to the vehicle controller, and the vehicle controller can respond to this warning instruction with a battery fault warning to the user. In this example, the second humidity threshold is no less than the first humidity threshold.

[0041] In conjunction with another example in 120 , as another example, assuming the second type of internal environmental parameter includes the VOC concentration within the battery, the battery's analog front-end unit can utilize a MOS sensor to collect the VOC concentration within the battery. For example, if the battery is experiencing significant coolant leakage or electrolyte release, and the VOC concentration collected by the analog front-end unit is no less than a second VOC concentration threshold, the second type of internal environmental parameter is determined to meet the second preset condition. In this case, a warning message indicating a battery abnormality is sent to the vehicle controller, and the vehicle controller can respond to the warning instruction and output a battery fault warning to the user. In this example, the second VOC concentration threshold is no less than the first VOC concentration threshold.

[0042] As an embodiment, step 130 may include: waking up a vehicle controller, the vehicle controller being used to wake up the entire vehicle network, and sending an early warning message to the vehicle controller via the entire vehicle network.

[0043] In this embodiment, the vehicle controller can be in a non-working state. When the battery management system determines that the second type of internal environmental parameters meet the second preset conditions, it indicates that the battery in the vehicle has failed, and then sends a warning message to the vehicle controller to indicate battery abnormality. The vehicle controller can send a prompt message to the user in response to the warning message.

[0044] It should be noted that waking up the vehicle controller can specifically be achieved by the battery supplying power to the vehicle controller. Here, after the vehicle controller is powered on, the vehicle network is awakened, that is, the communication unit in the vehicle that communicates with the battery management system is controlled to operate, so that the battery management system can communicate with the vehicle controller, and then send warning information to the vehicle controller via the vehicle network.

[0045] It is understood that when the battery management system determines that the second type of internal environmental parameters meet the second preset condition, it indicates that the battery in the vehicle has failed, which may cause the battery to experience thermal runaway. In specific implementations, the vehicle controller may also prohibit battery charging and discharging in response to this warning information.

[0046] The above solution obtains the first type of internal environmental parameters of the battery. Since the first preset condition is used to describe the critical condition for the battery to be in an abnormal state, when the first type of internal environmental parameters meet the first preset condition, it can be indicated that the battery is about to enter an abnormal state. Furthermore, by further obtaining the second type of internal environmental parameters of the battery including the first type of internal environmental parameters, and when the second type of internal environmental parameters meet the second preset condition, a warning message indicating a battery abnormality is sent to the vehicle controller. In this way, when the battery is abnormal, an abnormality warning can be promptly fed back to the vehicle controller, providing a solution that can accurately and quickly implement battery abnormality warning.

[0047] Figure 2 FIG2 shows a flowchart of a battery abnormality warning method according to another embodiment of the present application. Figure 1 The embodiment is different in that step 210 is further included after step 120. Figure 2 As shown, a battery abnormality warning method provided by this embodiment includes:

[0048] 210: When the second type of internal environmental parameters meet the third preset condition, send an alarm message to the vehicle controller, where the alarm message is used to instruct the vehicle controller to remind the user to stay away from the vehicle.

[0049] In 210 , the third preset condition is used to describe that the battery is in a serious fault state, that is, the third preset condition is a determination condition when the battery is in a serious fault state.

[0050] In a specific implementation, the vehicle can be equipped with an alarm system or alarm module. When the vehicle controller responds to the alarm information, the alarm system or alarm module can output a prompt message to remind the user to stay away from the vehicle. In response to the alarm information, the vehicle controller can control the alarm system or alarm module to output a warning message to remind the user to stay away from the vehicle. For example, the warning buzzer can sound, the warning light can flash, and other methods can be used to remind the user to stay away from the vehicle.

[0051] In this embodiment, when the second type of internal environmental parameters meet the third preset condition, it indicates that a serious battery failure has occurred. For example, there may be severe coolant leakage, severe electrolyte release, or thermal runaway. In this case, an alarm message can be sent to the vehicle controller to prompt the user to stay away from the vehicle, thereby preventing the vehicle from spontaneously catching fire due to battery failure and causing losses to the user.

[0052] As an embodiment, after step 130 , the method may further include: sending a cooling instruction to the vehicle controller when the second type of internal environment parameter meets a third preset condition.

[0053] In this embodiment, the vehicle controller is configured to control the water pump of the vehicle cooling system to start in response to a cooling instruction to cool the battery.

[0054] In practice, the vehicle can be equipped with a cooling system, also known as a water circulation cooling system. The vehicle controller activates the water pump in the cooling system, allowing cold water to flow through the battery, removing heat from the battery.

[0055] It can be understood that since the third preset condition is used to describe that the battery is in a serious fault state, when the second type of internal environmental parameters meet the third preset condition, it means that the vehicle is now in a thermal runaway state. In order to release the heat of the battery as soon as possible, a cooling instruction is sent to the vehicle controller, instructing the vehicle controller to control the water pump of the vehicle cooling system to start to cool the battery. The cold water in the vehicle cooling system can flow through the location of the battery, thereby taking away the heat of the battery and achieving the effect of accelerated cooling of the battery.

[0056] In some embodiments, after step 130 , the method may further include: when the second type of internal environmental parameter meets a third preset condition, controlling the power supply circuit of the battery to be disconnected.

[0057] For example, taking the battery as a power battery of a vehicle as an example, when the power supply circuit of the control battery is disconnected, the high-voltage switch connected to the control power battery may be disconnected.

[0058] Here, by disconnecting the battery's power supply circuit, the battery can be prevented from continuously supplying power to the vehicle's modules in a state of thermal runaway, thereby avoiding unnecessary damage to other modules of the vehicle.

[0059] In some embodiments, after step 130 , the method may further include: uploading fault information via the vehicle controller when the second type of internal environmental parameters meets a third preset condition.

[0060] The fault information may include a fault code and / or internal environment data of the battery. Here, the internal environment data may include first-category internal environment data and second-category internal environment data.

[0061] In a specific implementation, uploading the fault information through the vehicle controller may be performed by the vehicle controller through a communication module in the vehicle network to upload the fault information to the server.

[0062] The embodiment uploads the fault information through the vehicle controller, which can be used as a basis for subsequent analysis of the battery fault cause, and provides a data analysis basis for subsequent prevention of the battery fault.

[0063] Figure 3 is a structural block diagram of a battery provided by an embodiment of the present application. As shown in Figure 3 , the battery 3 of the embodiment includes a processor 30, a memory 31, and a computer program 32 stored in the memory 31 and executable on the processor 30, for example, a program of the battery anomaly early warning method. The processor 30 implements the steps in each of the embodiments of the above-mentioned various battery anomaly early warning methods when executing the computer program 32, for example, the steps shown in Figures 1 to 2 . For details, please refer to the related description in the corresponding embodiment, which will not be described here. Figures 1 to 2

[0064] Figure 4 is a structural block diagram of a vehicle provided by an embodiment of the present application. As shown in Figure 4 , the vehicle 4 of the embodiment includes a processor 40, a memory 41, and a computer program 42 stored in the memory 41 and executable on the processor 40, for example, a program of the battery anomaly early warning method. The processor 40 implements the steps in each of the embodiments of the above-mentioned various battery anomaly early warning methods when executing the computer program 42, for example, the steps shown in Figures 1 to 2 . For details, please refer to the related description in the corresponding embodiment, which will not be described here. Figures 1 to 2

[0065] The battery and the vehicle can include, but are not limited to, a processor, a memory. Those skilled in the art can understand that Figure 3 only the battery 3 is an example, Figure 4 only the vehicle 4 is an example, and does not constitute a limitation on the battery 3 or the vehicle 4, and can include more or fewer components than shown, or combine certain components, or different components, for example, the vehicle can also include an input / output device, a network access device, a bus, etc.

[0066] ​​The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0067] The memory may be an internal storage unit of the battery 3 or vehicle 4, such as a hard drive or memory of the battery 3 or vehicle 4. The memory may also be an external storage device of the battery 3 or vehicle 4, such as a plug-in hard drive, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash memory card, etc. equipped on the battery 3 or vehicle 4. Furthermore, the memory may include both an internal storage unit of the battery 3 or vehicle 4 and an external storage device. The memory is used to store the computer program and other programs and data required by the vehicle. The memory may also be used to temporarily store data that has been output or is about to be output.

[0068] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A battery abnormality warning method, characterized in that: Applied to a battery in a vehicle, the battery abnormality warning method includes: Obtaining a first type of internal environmental parameter of the battery; When the first type of internal environmental parameters meets a first preset condition, obtaining a second type of internal environmental parameters of the battery, where the second type of internal environmental parameters at least include the first type of internal environmental parameters; wherein the first preset condition is used to describe a critical condition that the battery is in an abnormal state; When the second type of internal environmental parameters meets a second preset condition, early warning information indicating that the battery is abnormal is sent to the vehicle controller.

2. The battery abnormality warning method according to claim 1, characterized in that: The obtaining of the first type of internal environmental parameters of the battery includes: The first type of internal environmental parameters is periodically obtained from an analog front-end unit of the battery.

3. The battery abnormality warning method according to claim 1, characterized in that: When the second type of internal environmental parameter satisfies a second preset condition, sending warning information indicating the battery abnormality to the vehicle controller includes: Waking up the vehicle controller, where the vehicle controller is used to wake up the entire vehicle network; The warning information is sent to the vehicle controller via the vehicle network.

4. The battery abnormality warning method according to claim 1, characterized in that: The first type of internal environmental parameters at least includes the internal environmental humidity and / or volatile organic compound (VOC) concentration of the battery.

5. The battery abnormality warning method according to claim 4, characterized in that: Also includes: When the internal environment humidity is not less than a first humidity threshold, and / or the VOC concentration is not less than a first VOC concentration threshold, it is determined that the first type of internal environment parameters meets the first preset condition.

6. The battery abnormality warning method according to claim 5, characterized in that: Also includes: When the internal environment humidity is not less than a second humidity threshold, and / or the VOC concentration is not less than a second VOC concentration threshold, it is determined that the second type of internal environment parameters meets the second preset condition; wherein, the second humidity threshold is not less than the first humidity threshold, and the second VOC concentration threshold is not less than the first VOC concentration threshold.

7. The battery abnormality warning method according to any one of claims 1 to 6, characterized in that: Also includes: When the second type of internal environmental parameters meets a third preset condition, an alarm message is sent to the vehicle controller, where the alarm message is used to instruct the vehicle controller to prompt the user to stay away from the vehicle.

8. The battery abnormality warning method according to any one of claims 1 to 7, characterized in that: Also includes: When the second type of internal environmental parameters meets a third preset condition, a cooling instruction is sent to the vehicle controller, and the vehicle controller is used to control the water pump of the vehicle cooling system to start to cool the battery in response to the cooling instruction.

9. A battery, characterized in that: include: A memory, a processor, and a computer program stored in the memory and capable of running on the battery, wherein when the processor executes the computer program, the steps of the battery abnormality warning method according to any one of claims 1 to 8 are implemented.

10. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the vehicle, wherein when the processor executes the computer program, the steps of the battery abnormality warning method according to any one of claims 1 to 8 are implemented.

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