Discharge control method and device, vehicle, storage medium and program product

Abstract

The invention relates to a discharge control method and device, a vehicle, a storage medium and a program product. The method comprises the steps of obtaining a vehicle state of a vehicle in response to an abnormal state of a battery in the vehicle; executing a discharging strategy corresponding to the vehicle state on the battery; under the condition that the vehicle meets the preset power-off condition, stopping executing the discharging strategy, and cutting off discharging of the battery; different vehicle states correspond to different discharging strategies; the preset power-off condition includes that the battery temperature is smaller than a preset temperature threshold value, and the vehicle state is a preset state; according to the method, under the condition that the battery is abnormal, the battery is not directly controlled to be powered off, the discharging strategy corresponding to the vehicle state is executed on the battery based on the vehicle state, the discharging strategy is made to be matched with the vehicle state, the flexibility of discharging control is improved, and the reliability of vehicle operation is synchronously improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a discharge control method, device, vehicle, storage medium and program product. Background Art

[0002] With the development of new energy technology, new energy equipment has been used more and more. Take new energy vehicles as an example. New energy vehicles use batteries as power sources to discharge the vehicle load to meet the power demand of the vehicle load.

[0003] In the related art, the battery often experiences thermal runaway due to various reasons during use. In response, the battery discharge is usually directly disconnected to cut off the battery's external power output. However, the battery discharge control in the related art is not flexible enough, which reduces the reliability of vehicle operation. Summary of the invention

[0004] Based on this, it is necessary to provide a discharge control method, device, vehicle, storage medium and program product to address the above technical problems.

[0005] In a first aspect, an embodiment of the present application provides a discharge control method, the method comprising:

[0006] Responsive to an abnormal state of a battery in the vehicle, obtaining a vehicle state of the vehicle;

[0007] Execute a discharge strategy corresponding to the vehicle state on the battery; different discharge strategies correspond to different vehicle states;

[0008] When the vehicle reaches a preset power-off condition, the discharge strategy is stopped and the battery discharge is disconnected; the preset power-off condition includes that the battery temperature is less than a preset temperature threshold and the vehicle state is a preset state.

[0009] In the embodiment of the present application, in the event of a battery abnormality, the battery is not directly controlled to be powered off. Instead, a discharge strategy corresponding to the vehicle state is executed on the battery based on the vehicle state, and the discharge strategy is matched with the vehicle state, thereby improving the flexibility of discharge control and simultaneously improving the reliability of vehicle operation.

[0010] In one embodiment, the discharge strategy includes taking the target output power as the output power of the battery; before executing the discharge strategy corresponding to the vehicle state on the battery, the method further includes:

[0011] The target output power is determined according to the vehicle status.

[0012] In an embodiment of the present application, the target output power is determined based on the vehicle state, and a discharge strategy using the target output power as the output power of the battery is obtained and executed, so that the output power of the battery discharge matches the vehicle state, thereby improving the safety and reliability of the vehicle operation.

[0013] In one embodiment, determining the target output power according to the vehicle state includes:

[0014] When the vehicle is in a driving state, the target output power is determined to be a first output power; the first output power is the sum of the powers required by target loads in the vehicle; the target loads include the vehicle's electric drive system, temperature control system and low-voltage power supply.

[0015] In an embodiment of the present application, when the vehicle is in a driving state, the determined first output power can simultaneously meet the required power of the electric drive system, temperature control system and low-voltage power supply in the vehicle, and can not only be used to cool down the battery in an abnormal state, but also maintain the current driving state of the vehicle, thereby improving the driving safety of the vehicle.

[0016] In one embodiment, determining the target output power according to the vehicle state includes:

[0017] When the vehicle is in a non-driving state, the target output power is determined to be the second output power; the second output power is the sum of the powers required by the target loads in the vehicle; the target loads include the vehicle's temperature control system and low-voltage power supply.

[0018] In an embodiment of the present application, when the vehicle is in a non-driving state, the determined second output power can simultaneously meet the required power of the temperature control system and the low-voltage power supply in the vehicle, which can not only be used to cool the battery in the abnormal state, but also reduce the thermal impact of non-essential loads on the battery in the abnormal state, thereby improving the discharge safety of the battery.

[0019] In one embodiment, the discharge strategy includes taking the target output power as the output power of the battery; and executing the discharge strategy corresponding to the vehicle state on the battery, including:

[0020] The link between the battery and the vehicle load is turned on, and the battery is controlled to output the target output power to discharge the vehicle load.

[0021] In the embodiment of the present application, the discharge control of the battery to the vehicle load is implemented under abnormal conditions, so that the battery discharges to the vehicle load at the target output power corresponding to the vehicle state, thereby improving the matching degree between the output power of the battery discharge and the vehicle state, thereby improving the reliability of the vehicle operation.

[0022] In one embodiment, conducting a link between a battery and a vehicle load includes:

[0023] Close the relay connected on the link between the battery and the vehicle load.

[0024] In the embodiment of the present application, by closing the relay on the link between the battery and the vehicle load to conduct the link between the battery and the vehicle load, the switching efficiency of the link state is improved, and the discharge control efficiency is correspondingly improved.

[0025] In one embodiment, controlling the battery to output a target output power includes:

[0026] A current adjustment instruction is sent to a control device connected to the battery; the current adjustment instruction is used to instruct the control device to adjust the discharge current of the battery so that the output power of the battery reaches the target output power.

[0027] In an embodiment of the present application, by sending a current adjustment instruction to a control device connected to the battery, thereby instructing the control device to adjust the discharge current of the battery so that the output power of the battery reaches the target output power, quick control of the battery output power is achieved, so as to adapt to the vehicle state and correspondingly improve the discharge control efficiency.

[0028] In one embodiment, executing a discharge strategy corresponding to the vehicle state on the battery includes:

[0029] When the vehicle status does not change, the current discharge strategy of the battery is maintained;

[0030] When the vehicle state changes, a discharge strategy corresponding to the changed vehicle state is executed on the battery.

[0031] In the embodiment of the present application, whether to maintain or adjust the discharge strategy executed on the battery is determined based on the actual changes in the vehicle state to adapt to the actual changes in the vehicle state, thereby improving the flexibility of adjusting the discharge strategy.

[0032] In one embodiment, disconnecting the discharge of the battery includes:

[0033] Disconnect the relay that connects the link between the battery and the vehicle load.

[0034] In the embodiment of the present application, the link between the battery and the vehicle load is disconnected by disconnecting the relay on the link between the battery and the vehicle load, thereby disconnecting the battery discharge, thereby improving the control efficiency of the discharge state and correspondingly improving the discharge control efficiency.

[0035] In one embodiment, before responding to an abnormal state of a battery in a vehicle, the method further includes:

[0036] Obtain target characteristic parameters of the battery;

[0037] The temperature state of the battery is determined according to the target characteristic parameter.

[0038] In the embodiment of the present application, the battery temperature status is monitored, and the battery discharge control is timely performed when the battery temperature is abnormal, thereby improving the stability and reliability of the vehicle operation.

[0039] In one embodiment, the method further comprises:

[0040] When the temperature state of the battery is in a normal state, in response to the normal state of the battery, executing a discharge strategy corresponding to the normal state on the battery;

[0041] In the case where the temperature state of the battery is in an abnormal state, a step of acquiring a vehicle state of the vehicle in response to the abnormal state of the battery in the vehicle is performed.

[0042] In the embodiment of the present application, different discharge strategies are executed on the battery accordingly based on whether the temperature state of the battery is normal or abnormal, so as to take into account the different temperature states of the battery in actual applications, improve the matching degree between the discharge strategy and the temperature state of the battery, and thus improve the safety of discharge control.

[0043] In a second aspect, an embodiment of the present application further provides a discharge control device, the device comprising:

[0044] an abnormal response module, for obtaining a vehicle state of the vehicle in response to an abnormal state of a battery in the vehicle;

[0045] A strategy execution module is used to execute a discharge strategy corresponding to the vehicle state on the battery; different vehicle states correspond to different discharge strategies;

[0046] The discharge disconnection module is used to stop executing the discharge strategy and disconnect the discharge of the battery when the vehicle reaches a preset power-off condition; the preset power-off condition includes that the battery temperature is less than a preset temperature threshold and the vehicle state is a preset state.

[0047] In a third aspect, an embodiment of the present application further provides a vehicle, comprising a battery, a domain controller, a control device and a relay; the domain controller is connected to the battery through the control device and the relay; the domain controller is used to implement the steps in the discharge control method provided in any one of the embodiments of the first aspect above.

[0048] In a fourth aspect, an embodiment of the present application further provides a vehicle, including a battery, a vehicle controller, and a battery management system; the battery management system is used to obtain a battery state, and determine a discharge strategy corresponding to the vehicle state according to the received vehicle state; different vehicle states correspond to different discharge strategies;

[0049] The vehicle controller is used to respond to an abnormal state of the battery, obtain the vehicle state of the vehicle, receive a discharge strategy corresponding to the vehicle state, and execute the discharge strategy corresponding to the vehicle state on the battery, and when the vehicle reaches a preset power-off condition, stop executing the discharge strategy and disconnect the discharge of the battery; the preset power-off condition includes that the battery temperature is less than a preset temperature threshold and the vehicle state is a preset state.

[0050] In a fifth aspect, an embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the discharge control method provided in any one of the embodiments in the first aspect above are implemented.

[0051] In a sixth aspect, an embodiment of the present application further provides a computer program product, including a computer program, which, when executed by a processor, implements the steps in the discharge control method provided in any one of the embodiments in the first aspect above.

[0052] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] FIG1 is a block diagram of a vehicle in one embodiment;

[0054] FIG2 is a schematic flow chart of a discharge control method in one embodiment;

[0055] FIG3 is a schematic diagram of a flow chart of adjusting a discharge strategy in one embodiment;

[0056] FIG4 is a schematic diagram of a flow chart of determining a temperature state of a battery in one embodiment;

[0057] FIG5 is a schematic flow chart of a discharge control method in another embodiment;

[0058] FIG6 is a schematic flow chart of a discharge control method in another embodiment;

[0059] FIG7 is a block diagram of a discharge control device in one embodiment;

[0060] FIG8 is a structural block diagram of a vehicle in another embodiment.

[0061] Description of reference numerals:

[0062] 100 – Vehicles;

[0063] 101 – Battery;

[0064] 102 – domain controller;

[0065] 103 – control device;

[0066] 104——Relay;

[0067] 105——Vehicle controller;

[0068] 106——Battery management system. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the term "including" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0071] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0072] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two), unless otherwise clearly and specifically defined.

[0073] With the development of new energy technology, new energy equipment has been used more and more. Take new energy vehicles as an example. New energy vehicles use batteries as power sources to discharge the vehicle load to meet the power demand of the vehicle load.

[0074] During use, the battery often experiences a variety of reasons, such as overcharge, overdischarge, mechanical collision, etc., which causes the internal temperature of the battery to continue to rise and thermal runaway occurs. In serious cases, it may also cause safety accidents such as fire or explosion. In this regard, in the related art, it is usually to directly disconnect the relay connected to the link between the battery and the vehicle load to disconnect the battery from discharging the vehicle load, thereby cutting off the battery's external power output.

[0075] However, in actual applications, the battery may experience thermal runaway in any vehicle state. If thermal runaway occurs while driving, the relevant technology will forcibly disconnect the battery discharge, causing the vehicle to suddenly lose power and cause safety problems, especially in high-speed driving scenarios, which will cause more serious safety problems.

[0076] Therefore, the discharge control under abnormal battery conditions in the related art is not flexible enough, thereby reducing the reliability of vehicle operation.

[0077] Based on this, a discharge control method is provided in an embodiment of the present application. In the case of battery abnormality, the vehicle status of the vehicle where the battery is located is obtained to execute a discharge strategy corresponding to the vehicle status on the battery, and the discharge strategy is adjusted to adapt to changes in the vehicle status, so that the discharge strategy matches the vehicle status, thereby improving the flexibility of discharge control and simultaneously improving the reliability of vehicle operation.

[0078] The discharge control method provided in the embodiment of the present application can be applied to a vehicle. Therefore, before describing the process of the discharge control method in detail, the vehicle provided in the embodiment of the present application will be described first.

[0079] As shown in FIG. 1 , in one embodiment, the embodiment of the present application provides a vehicle 100 , including: a battery 101 , a domain controller 102 , a control device 103 , and a relay 104 .

[0080] The domain controller 102 is connected to the battery 101 via the control device 103 and the relay 104 .

[0081] Next, each part of the vehicle 100 is described in detail:

[0082] The battery 101 is a power source in the vehicle 100 and can be used to discharge the vehicle load, so that the battery 101 supplies power to the vehicle load. For example, the vehicle load includes the vehicle's electric drive system, temperature control system, or lighting system.

[0083] In practical applications, the battery 101 may be a single battery cell, or a battery pack formed by a plurality of single battery cells. In this embodiment, the form of the battery 101 is not specifically limited.

[0084] The domain controller 102 is the control center in the vehicle 100 , and can integrate the functions of the battery management system (BMS) and the vehicle controller to monitor and manage the battery 101 and realize the discharge control of the battery 101 to the vehicle load.

[0085] Exemplarily, the domain controller 102 may obtain temperature data of the battery 101, determine the battery temperature state based on the temperature data of the battery 101, and issue an abnormal alarm when the battery temperature is abnormal (such as thermal runaway). It may also obtain the vehicle state and control the discharge of the battery based on the vehicle state.

[0086] The control device 103 is connected to the domain controller 102 and the battery 101 respectively, and is used to adjust the output power of the battery 101 under the control of the domain controller 102. Exemplarily, the control device 103 can receive an adjustment instruction issued by the domain controller 102, and limit the current of the battery 101 in response to the adjustment instruction, so as to control the output power of the battery 101. The control device 103 is integrated with a chip and a power semiconductor.

[0087] The relay 104 is a switch unit connecting the battery 101 and the vehicle load, and is used to adjust the state of the link between the battery 101 and the vehicle load under the control of the domain controller 102. Exemplarily, the relay 104 may disconnect the link between the battery 101 and the vehicle load when receiving a disconnection instruction issued by the domain controller 102; and connect the link between the battery 101 and the vehicle load when receiving a connection instruction issued by the domain controller 102.

[0088] Those skilled in the art will understand that the structure shown in FIG. 1 is merely a block diagram of a partial structure related to the embodiment of the present application, and does not constitute a limitation on the computer device to which the embodiment of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0089] Next, the discharge control method provided in the embodiment of the present application is described in detail, and the method is applied to the domain controller in FIG. 1 as an example for explanation. In one embodiment, as shown in FIG. 2, the provided discharge control method includes the following steps:

[0090] S210: In response to an abnormal state of a battery in the vehicle, obtain a vehicle state of the vehicle.

[0091] Among them, the abnormal state of the battery represents the abnormality of the battery characteristic parameters, such as abnormal temperature (such as thermal runaway), abnormal current or abnormal voltage. The vehicle state is used to represent the whole vehicle operation state of the vehicle. Exemplarily, the vehicle state may include driving state, parking state or charging state.

[0092] Optionally, the domain controller can monitor the battery status of the battery in the vehicle, and when the battery is in an abnormal state, obtain the vehicle status of the vehicle and synchronously output a battery abnormality warning.

[0093] S220, executing a discharge strategy corresponding to the vehicle state on the battery; different vehicle states correspond to different discharge strategies.

[0094] The discharge strategy refers to the discharge strategy of the battery to the vehicle load. For example, the discharge strategy may include the operating parameters of the battery, such as the discharge current or the output power.

[0095] Optionally, after obtaining the vehicle status, the domain controller may read a pre-stored correspondence between the vehicle status and the discharge strategy, determine the discharge strategy corresponding to the vehicle status, and execute the discharge strategy corresponding to the vehicle status on the battery.

[0096] Exemplarily, the correspondence between the vehicle state and the discharge strategy may be represented by a correspondence table, and the domain controller may determine the discharge strategy corresponding to the vehicle state by looking up the table.

[0097] In the case where the discharge strategy includes the operating parameters of the battery, executing the discharge strategy corresponding to the vehicle state on the battery means that the domain controller controls the battery to discharge the vehicle load with the operating parameters as the output target.

[0098] S230. When the vehicle reaches a preset power-off condition, stop executing the discharge strategy and disconnect the discharge of the battery; the preset power-off condition includes that the battery temperature is less than a preset temperature threshold and the vehicle state is a preset state.

[0099] The preset power-off condition is a condition for disconnecting the battery discharge. For example, the preset power-off condition may include conditions related to the battery in the vehicle, such as the battery being in an abnormal state for a preset time, or the abnormality level being lower than a preset level, and may also include conditions related to the vehicle itself, such as the vehicle startup time reaching a preset time, the mileage reaching a preset mileage, etc.

[0100] It should be noted that in actual applications, the vehicle state may change based on user operations. The domain controller may periodically obtain the vehicle state, or obtain the changed vehicle state when the vehicle state changes.

[0101] Optionally, the domain controller may monitor the vehicle information to determine whether the vehicle has reached the preset power-off condition based on the parameter information related to the preset power-off condition in the vehicle information, and stop executing the discharge strategy and disconnect the battery discharge when the vehicle reaches the preset power-off condition. Exemplarily, the domain controller may periodically obtain the battery temperature and vehicle status of the vehicle to determine that the vehicle has reached the preset power-off condition when the battery temperature is less than the preset temperature threshold and the vehicle status reaches the preset status, so as to stop executing the discharge strategy and disconnect the battery discharge. For example, the preset status includes a non-driving status, such as a parking status.

[0102] Accordingly, when the battery temperature is greater than or equal to the preset temperature threshold, or the vehicle state does not reach the preset state, the domain controller continues to execute the step of executing the discharge strategy corresponding to the vehicle state on the battery.

[0103] Among them, the battery temperature is less than the preset temperature threshold, and the vehicle state is the preset state, indicating that the battery temperature and vehicle state of the vehicle are both in a safe state. The battery temperature is less than the preset temperature threshold, and the vehicle state is the preset state as the preset power-off condition of the vehicle, so as to achieve the disconnection of discharge when both the battery and the vehicle are safe, so as to reduce the safety impact of power-off on the battery and the vehicle, and improve the safety of power-off.

[0104] In the embodiment of the present application, the vehicle status of the vehicle is obtained by responding to the abnormal state of the battery in the vehicle, so as to execute the discharge strategy corresponding to the vehicle status on the battery, and when the vehicle reaches the preset power-off condition, stop executing the discharge strategy and disconnect the discharge of the battery; different vehicle states correspond to different discharge strategies; the preset power-off condition includes that the battery temperature is less than the preset temperature threshold, and the vehicle status is the preset state. In the above method, in the case of battery abnormality, the battery is not directly controlled to be powered off, but the discharge strategy corresponding to the vehicle status is executed on the battery based on the vehicle status, and the discharge strategy is matched with the vehicle status, which improves the flexibility of discharge control and simultaneously improves the reliability of vehicle operation.

[0105] The discharge strategy includes using the target output power as the output power of the battery. Based on this, in one embodiment, before executing the discharge strategy corresponding to the vehicle state on the battery in S220, the method further includes:

[0106] The target output power is determined according to the vehicle status.

[0107] Optionally, before executing the discharge strategy corresponding to the vehicle on the battery, the domain controller may first determine the target output power of the battery according to the vehicle state to obtain a discharge strategy with the target output power as the output power of the battery, and use it as the discharge strategy corresponding to the vehicle state.

[0108] Exemplarily, a state power correspondence table is pre-configured in the domain controller. After obtaining the vehicle state, the domain controller searches the state power correspondence table for the output power corresponding to the vehicle state as the target output power. For example, when the vehicle state is a parking state, the target output power is determined to be P1 based on the state power correspondence table; when the vehicle state is a driving state, the target output power is determined to be P2 based on the state power correspondence table.

[0109] In the embodiment of the present application, the discharge strategy includes taking the target output power as the output power of the battery, and determining the target output power according to the vehicle state before executing the discharge strategy corresponding to the vehicle state on the battery. In the above method, the target output power is determined based on the vehicle state, and the discharge strategy taking the target output power as the output power of the battery is obtained and executed, so that the output power of the battery discharge matches the vehicle state, thereby improving the safety and reliability of the vehicle operation.

[0110] When the vehicle is in a driving state, in one embodiment, the above-mentioned determining the target output power according to the vehicle state includes:

[0111] When the vehicle is in a driving state, the target output power is determined to be a first output power; the first output power is the sum of the powers required by target loads in the vehicle; the target loads include the vehicle's electric drive system, temperature control system and low-voltage power supply.

[0112] The vehicle's electric drive system is used to drive the vehicle and maintain the vehicle's driving state. The low-voltage power source is a small battery in the vehicle, which can drive the water pump in the vehicle to cool the battery. The temperature control system is a temperature regulation system in the vehicle (such as an air conditioning system), which can cool the coolant in the water pump to improve the cooling effect on the battery.

[0113] It should be noted that when the battery is in an abnormal state, the battery needs to discharge the temperature control system and low-voltage power supply in the vehicle, so that the temperature control system and low-voltage power supply can be started under the control of the vehicle controller to cool down the abnormally hot battery; when the vehicle is in a driving state, the battery needs to discharge the electric drive system in the vehicle to maintain the driving state of the vehicle. Therefore, when the battery is in an abnormal state and the vehicle is in a driving state, the battery needs to meet the output power that can discharge the electric drive system, temperature control system and low-voltage power supply in the vehicle.

[0114] Optionally, when the vehicle is in a driving state, the domain controller may discharge the electric drive system, the temperature control system and the low-voltage power supply in the vehicle as target loads, and obtain the sum of the required powers of the target loads as the first output power corresponding to the driving state.

[0115] Exemplarily, in order to meet the acoustic, optical and electrical needs of the vehicle when driving, the target load of the vehicle when driving may also include acoustic, optical and electrical equipment in the vehicle, such as horns and lights. The first output power corresponds to the sum of the required powers of the electric drive system, the temperature control system, the low-voltage power supply and the acoustic, optical and electrical equipment.

[0116] In the embodiment of the present application, when the vehicle is in the driving state, the target output power is determined to be the first output power; the first output power is the sum of the power required by the target loads in the vehicle; the target loads include the vehicle's electric drive system, temperature control system and low-voltage power supply. In the above method, when the vehicle is in the driving state, the determined first output power can simultaneously meet the power required by the vehicle's electric drive system, temperature control system and low-voltage power supply, which can not only be used to cool down the battery in an abnormal state, but also maintain the vehicle's current driving state, thereby improving the vehicle's driving safety.

[0117] In the case where the vehicle state is not in a driving state, in one embodiment, the above-mentioned determining the target output power according to the vehicle state includes:

[0118] When the vehicle is in a non-driving state, the target output power is determined to be the second output power; the second output power is the sum of the powers required by the target loads in the vehicle; the target loads include the vehicle's temperature control system and low-voltage power supply.

[0119] The non-driving state may be a parking state or a charging state.

[0120] It should be noted that when the battery is in an abnormal state, the battery needs to discharge the temperature control system and low-voltage power supply in the vehicle, so that the temperature control system and low-voltage power supply can be started under the control of the domain controller to cool down the abnormally hot battery; when the vehicle is parked, the battery needs to discharge the electric drive system in the vehicle to maintain the vehicle's driving state, and when the vehicle is not parked, the battery does not need to discharge the electric drive system. Therefore, when the battery is in an abnormal state and the vehicle is not in a driving state, the battery only needs to meet the output power that can discharge the temperature control system and low-voltage power supply in the vehicle.

[0121] Optionally, when the vehicle is in a non-driving state, the domain controller may discharge the temperature control system and the low-voltage power supply in the vehicle as target loads, and obtain the sum of the required powers of the target loads as the second output power corresponding to the non-driving state.

[0122] Exemplarily, in order to meet the acoustic, optical and electrical needs of the vehicle when not driving, the target load of the vehicle when driving may also include acoustic, optical and electrical equipment in the vehicle, such as horns and lights, and the second output power is correspondingly the sum of the required powers of the temperature control system, the low-voltage power supply and the acoustic, optical and electrical equipment.

[0123] To improve the safety of battery power use, when the vehicle is in charging state, the domain controller can cut off the link between the battery and the external power supply, and can also output alarm prompt information of abnormal static charging of the battery, thereby reducing the thermal impact of the charging process on the abnormal state battery and improving the safety of battery power use.

[0124] In the embodiment of the present application, when the vehicle is in a non-driving state, the target output power is determined to be the second output power; the second output power is the sum of the power required by the target loads in the vehicle; the target loads include the temperature control system and the low-voltage power supply of the vehicle. In the above method, when the vehicle is in a non-driving state, the determined second output power can simultaneously meet the power required by the temperature control system and the low-voltage power supply in the vehicle, which can not only be used to cool down the battery in an abnormal state, but also reduce the thermal impact of non-essential loads on the battery in an abnormal state, thereby improving the discharge safety of the battery.

[0125] In the case where the discharge strategy includes taking the target output power as the output power of the battery, in one embodiment, executing the discharge strategy corresponding to the vehicle state on the battery in S220 includes:

[0126] The link between the battery and the vehicle load is turned on, and the battery is controlled to output the target output power to discharge the vehicle load.

[0127] Optionally, after obtaining the discharge strategy corresponding to the vehicle state, the domain controller may conduct the link between the battery and the vehicle load, and control the battery to output a target output power corresponding to the vehicle state to discharge the vehicle load.

[0128] In the embodiment of the present application, the link between the battery and the vehicle load is turned on to discharge the vehicle load. In the above method, the discharge control of the battery to the vehicle load under abnormal conditions is realized, so that the battery discharges the vehicle load at the target output power corresponding to the vehicle state, thereby improving the matching degree between the output power of the battery discharge and the vehicle state, thereby improving the reliability of vehicle operation.

[0129] A relay is connected to the link between the battery and the vehicle load. In one embodiment, the link between the battery and the vehicle load is connected, including:

[0130] Close the relay on the link between the battery and the vehicle load.

[0131] The relay is a switch unit connected to the link between the battery and the vehicle load, and can receive a switch control instruction sent by the domain controller to control the relay to change the state of the link between the battery and the vehicle load. For example, the relay can be closed when receiving a conduction instruction to conduct the link between the battery and the vehicle load; correspondingly, the relay can be disconnected when receiving a disconnection instruction to conduct the link between the battery and the vehicle load.

[0132] Optionally, in the case where it is necessary to connect the link between the battery and the vehicle load, the domain controller may send a closing instruction to the relay to connect the link between the battery and the vehicle load.

[0133] In the embodiment of the present application, by closing the relay on the link between the battery and the vehicle load to conduct the link between the battery and the vehicle load, the switching efficiency of the link state is improved, and the discharge control efficiency is correspondingly improved.

[0134] The battery is also connected to a control device for controlling the battery output power. In one embodiment, the control of the battery outputting a target output power includes:

[0135] A current adjustment instruction is sent to a control device connected to the battery; the current adjustment instruction is used to instruct the control device to adjust the discharge current of the battery so that the output power of the battery reaches the target output power.

[0136] The control device can adjust the output power of the battery by adjusting the output current of the battery.

[0137] Optionally, the domain controller may generate a current adjustment instruction carrying a target current corresponding to the target output power based on the target output power, and send the current adjustment instruction to the control device to instruct the control device to adjust the discharge current of the battery to reach the target current, so that the output power of the battery reaches the target output power accordingly.

[0138] In an embodiment of the present application, by sending a current adjustment instruction to a control device connected to the battery, thereby instructing the control device to adjust the discharge current of the battery so that the output power of the battery reaches the target output power, quick control of the battery output power is achieved, so as to adapt to the vehicle state and correspondingly improve the discharge control efficiency.

[0139] In practical applications, it is also necessary to adjust the discharge strategy executed on the battery when the vehicle state changes. Based on this, in one embodiment, as shown in FIG3 , the discharge strategy corresponding to the vehicle state executed on the battery in S220 includes:

[0140] S310: When the vehicle state does not change, keep executing the current discharge strategy for the battery.

[0141] Optionally, the domain controller may monitor the vehicle status to continue to maintain the current discharge strategy executed on the battery when the vehicle status does not change.

[0142] Exemplarily, the domain controller may periodically obtain the vehicle status, and if the vehicle status obtained last time is the parking status, the vehicle status obtained this time is also the parking status, that is, if the vehicle status has not changed, the current discharge strategy for the battery continues to be executed, that is, the discharge strategy corresponding to the parking status.

[0143] S320: When the vehicle state changes, a discharge strategy corresponding to the changed vehicle state is executed on the battery.

[0144] Optionally, the domain controller may monitor the vehicle status to determine a discharge strategy corresponding to the changed vehicle status when the vehicle status changes, and execute the discharge strategy corresponding to the changed vehicle status on the battery.

[0145] Exemplarily, the domain controller may periodically obtain the vehicle status, and when the vehicle status obtained last time is the parking status, the vehicle status obtained this time is the driving status. That is, when the vehicle status changes, the discharge strategy corresponding to the changed vehicle status is executed on the battery, that is, the discharge strategy corresponding to the driving status is executed on the battery.

[0146] It should be noted that the domain controller can cyclically adjust and execute the discharge strategy corresponding to the vehicle state based on the change of the vehicle state. For example, the vehicle state is in the driving state, and the domain controller executes the discharge strategy corresponding to the driving state on the battery. When the vehicle state changes to the parking state, the domain controller adjusts the discharge strategy corresponding to the driving state to the discharge strategy corresponding to the parking state, and executes the adjusted discharge strategy (i.e., the discharge strategy corresponding to the parking state) on the battery.

[0147] In the embodiment of the present application, when the vehicle state does not change, the current discharge strategy is maintained for the battery; when the vehicle state changes, the discharge strategy corresponding to the changed vehicle state is executed for the battery. In the above method, whether to maintain or adjust the discharge strategy executed on the battery is determined based on the actual change of the vehicle state to adapt to the actual change of the vehicle state, thereby improving the flexibility of the discharge strategy adjustment.

[0148] A relay is connected to the link between the battery and the vehicle load. In one embodiment, the step of disconnecting the discharge of the battery in S230 includes:

[0149] Disconnect the relay that connects the link between the battery and the vehicle load.

[0150] Optionally, in the event that the discharge of the battery needs to be disconnected, the domain controller may send a disconnection instruction to the relay to disconnect the link between the battery and the vehicle load, thereby disconnecting the discharge of the battery to the vehicle load.

[0151] In the embodiment of the present application, the link between the battery and the vehicle load is disconnected by disconnecting the relay on the link between the battery and the vehicle load, thereby disconnecting the battery discharge, thereby improving the control efficiency of the discharge state and correspondingly improving the discharge control efficiency.

[0152] The above discharge control method further includes determining the temperature state of the battery. Based on this, in one embodiment, as shown in FIG4 , before responding to the abnormal state of the battery in the vehicle in S210 , the above method further includes:

[0153] S410: Obtain target characteristic parameters of the battery.

[0154] The target characteristic parameters of the battery can be used to characterize the temperature state of the battery. For example, the target characteristic parameters of the battery include voltage, current or temperature. The temperature state of the battery includes a normal state and an abnormal state.

[0155] Optionally, the domain controller may directly read target characteristic parameters of the battery, such as temperature.

[0156] S420: Determine the temperature state of the battery according to the target characteristic parameter.

[0157] Optionally, after obtaining the target characteristic parameters of the battery, the domain controller may match the target characteristic parameters of the battery with parameter conditions corresponding to different temperature states to determine the temperature state of the battery.

[0158] Exemplarily, taking the target characteristic parameter as temperature, the parameter condition corresponding to the abnormal temperature state includes the battery temperature being greater than a preset temperature threshold, and the parameter condition corresponding to the normal temperature state includes the battery temperature being less than or equal to the preset temperature threshold. When the acquired battery temperature is greater than the preset temperature threshold, the battery temperature state is determined to be an abnormal state; otherwise, when the acquired battery temperature is less than or equal to the preset temperature threshold, the battery temperature state is determined to be a normal state.

[0159] In the embodiment of the present application, before responding to the abnormal state of the battery in the vehicle, the target characteristic parameters of the battery are obtained to determine the temperature state of the battery according to the target characteristic parameters. In the above method, the battery temperature state is monitored, and the battery discharge control is timely performed when the battery temperature is abnormal, thereby improving the stability and reliability of the vehicle operation.

[0160] The temperature state of the battery may be a normal state or an abnormal state. In one embodiment, as shown in FIG5 , the method further includes:

[0161] S510: When the temperature state of the battery is normal, in response to the normal state of the battery, execute a discharge strategy corresponding to the normal state on the battery.

[0162] The discharge strategy executed for the battery under normal conditions is different from the discharge strategy executed for the battery under abnormal conditions.

[0163] Optionally, two sets of discharge strategies are pre-stored in the domain controller, corresponding to the discharge strategy corresponding to the normal state and the discharge strategy corresponding to the abnormal state. After obtaining the temperature state of the battery, the domain controller can obtain the discharge strategy corresponding to the normal state of the battery in response to the normal state of the battery when the temperature state of the battery is normal, and execute the discharge strategy corresponding to the normal state on the battery.

[0164] Exemplarily, the discharge strategy corresponding to the normal state includes taking the reference output power as the output power of the battery, where the reference output power is the maximum output power of the battery, or is the sum of the powers required by all vehicle loads in the vehicle.

[0165] S520: When the temperature state of the battery is abnormal, executing a step of acquiring a vehicle state of the vehicle in response to the abnormal state of the battery in the vehicle.

[0166] Optionally, after obtaining the temperature state of the battery, the domain controller may, in response to the abnormal state of the battery, obtain a discharge strategy corresponding to the abnormal state of the battery, and execute the discharge strategy corresponding to the abnormal state on the battery, when the temperature state of the battery is abnormal. Specifically, the step of obtaining the vehicle state of the vehicle in response to the abnormal state of the battery in the vehicle, i.e., S210, is executed, and S220 and S230 are executed accordingly.

[0167] In the embodiment of the present application, when the temperature state of the battery is in a normal state, in response to the normal state of the battery, a discharge strategy corresponding to the normal state is executed on the battery; when the temperature state of the battery is in an abnormal state, a step of obtaining the vehicle state of the vehicle in response to the abnormal state of the battery in the vehicle is executed. In the above method, different discharge strategies are executed on the battery based on whether the temperature state of the battery is in a normal state or an abnormal state, so as to take into account the different temperature states of the battery in actual applications, improve the matching degree between the discharge strategy and the temperature state of the battery, and thus improve the safety of discharge control.

[0168] To facilitate understanding by those skilled in the art, the discharge control method provided by the present application is described in detail below. As shown in FIG6 , the method may include:

[0169] S601. Determine a temperature state of a battery according to target characteristic parameters of a battery in a vehicle.

[0170] S602: When the temperature state of the battery is normal, in response to the normal state of the battery, executing a discharge strategy corresponding to the normal state on the battery;

[0171] S603, when the temperature state of the battery is abnormal, obtaining the vehicle state of the vehicle;

[0172] S604, determining a target output power according to the vehicle state, and generating a discharge strategy using the target output power as the output power of the battery; the target output power is the sum of the power required by the target loads in the vehicle; when the vehicle state is a driving state, the target loads include the vehicle's electric drive system, temperature control system, and low-voltage power supply; when the vehicle state is a non-driving state, the target loads include the temperature control system and the low-voltage power supply;

[0173] S605, closing the relay connected to the link between the battery and the vehicle load;

[0174] S606, sending a current adjustment instruction to a control device connected to the battery; the current adjustment instruction is used to instruct the control device to adjust the discharge current of the battery so that the output power of the battery reaches the target output power;

[0175] S607, controlling the battery to discharge the vehicle load based on the target output power, so as to implement a discharge strategy corresponding to the vehicle state for the battery;

[0176] S608: When the vehicle state does not change, keep executing the current discharge strategy for the battery;

[0177] S609, when the vehicle state changes, executing a discharge strategy corresponding to the changed vehicle state on the battery;

[0178] S610: When the battery temperature is lower than a preset temperature threshold and the vehicle state is a preset state, stop executing the discharge strategy and disconnect the discharge of the battery.

[0179] It should be noted that for the description in the above S601-S610, reference may be made to the relevant description in the above embodiment, and the effects are similar, which will not be repeated in this embodiment.

[0180] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0181] In one embodiment, as shown in FIG. 7 , a discharge control device is provided, including: an abnormal response module 701 , a strategy execution module 702 and a discharge disconnection module 703 ; wherein:

[0182] The abnormal response module 701 is used to obtain the vehicle status of the vehicle in response to the abnormal status of the battery in the vehicle;

[0183] The strategy execution module 702 is used to execute a discharge strategy corresponding to the vehicle state on the battery; different vehicle states correspond to different discharge strategies;

[0184] The discharge disconnection module 703 is used to stop executing the discharge strategy and disconnect the discharge of the battery when the vehicle reaches a preset power-off condition; the preset power-off condition includes that the battery temperature is less than a preset temperature threshold and the vehicle state is a preset state.

[0185] Each module in the above battery discharge control device can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the operations corresponding to each module.

[0186] In one embodiment, as shown in FIG. 1 , a vehicle 100 is provided, including: a battery 101 , a domain controller 102 , a control device 103 , and a relay 104 .

[0187] The domain controller 102 is connected to the battery 101 via the control device 103 and the relay 104 to implement the steps of any of the above methods.

[0188] In addition to the vehicle shown in FIG. 1 , the present application also provides a vehicle for implementing a discharge control method. In one embodiment, as shown in FIG. 8 , the vehicle 100 includes a battery 101 , a vehicle controller 105 , and a battery management system 106 .

[0189] Among them, the battery management system 106 is used to obtain the battery status and determine the discharge strategy corresponding to the vehicle status according to the received vehicle status; different vehicle statuses correspond to different discharge strategies; the vehicle controller 105 is used to respond to the abnormal state of the battery 101, obtain the vehicle status of the vehicle 100, receive the discharge strategy corresponding to the vehicle status, and execute the discharge strategy corresponding to the vehicle status on the battery 101, and when the vehicle 100 reaches a preset power-off condition, stop executing the discharge strategy and disconnect the discharge of the battery 101; the preset power-off condition includes that the battery temperature is less than the preset temperature threshold and the vehicle status is a preset state.

[0190] The battery management system 106 can monitor the temperature state of the battery 101 , and send abnormal state information to the vehicle controller 105 when the temperature state of the battery 101 is abnormal.

[0191] When receiving the abnormal status information sent by the battery management system 106 , the vehicle controller 105 obtains the vehicle status and feeds the vehicle status back to the battery management system 106 .

[0192] The battery management system 106 obtains the discharge strategy corresponding to the vehicle status, and sends the discharge strategy corresponding to the vehicle status to the vehicle controller 105. The vehicle controller 105 executes the discharge strategy corresponding to the vehicle status on the battery 101, and when the vehicle 100 reaches a preset power-off condition, stops executing the discharge strategy and disconnects the discharge of the battery 101.

[0193] In one embodiment, the battery management system 106 obtains a discharge strategy corresponding to the vehicle state, including:

[0194] Determine the target output power according to the vehicle status;

[0195] A discharge strategy is generated with the target output power as the output power of the battery.

[0196] In one embodiment, determining the target output power according to the vehicle state includes:

[0197] When the vehicle is in a driving state, the target output power is determined to be a first output power; the first output power is the sum of the powers required by target loads in the vehicle; the target loads include the vehicle's electric drive system, temperature control system and low-voltage power supply.

[0198] In one embodiment, determining the target output power according to the vehicle state includes:

[0199] When the vehicle is in a non-driving state, the target output power is determined to be the second output power; the second output power is the sum of the powers required by the target loads in the vehicle; the target loads include the vehicle's temperature control system and low-voltage power supply.

[0200] In one embodiment, the discharge strategy includes taking the target output power as the output power of the battery; the vehicle controller 105 executes the discharge strategy corresponding to the vehicle state on the battery 101, including:

[0201] The link between the battery and the vehicle load is turned on, and the battery is controlled to output the target output power to discharge the vehicle load.

[0202] In one embodiment, conducting a link between a battery and a vehicle load includes:

[0203] Close the relay connected on the link between the battery and the vehicle load.

[0204] In one embodiment, controlling the battery to output a target output power includes:

[0205] A current adjustment instruction is sent to a control device connected to the battery; the current adjustment instruction is used to instruct the control device to adjust the discharge current of the battery so that the output power of the battery reaches the target output power.

[0206] In one embodiment, the vehicle controller 105 executes a discharge strategy corresponding to the vehicle state on the battery 101, including:

[0207] When the vehicle status does not change, the current discharge strategy of the battery is maintained;

[0208] When the vehicle state changes, a discharge strategy corresponding to the changed vehicle state is executed on the battery.

[0209] In one embodiment, disconnecting the discharge of the battery 101 includes:

[0210] Disconnect the relay that connects the link between the battery and the vehicle load.

[0211] In one embodiment, the battery management system 106 is further configured to:

[0212] Obtain target characteristic parameters of the battery;

[0213] The temperature state of the battery is determined according to the target characteristic parameter.

[0214] In one embodiment, the battery management system 106 is further configured to:

[0215] When the temperature state of the battery is normal, a discharge strategy corresponding to the normal state is obtained and fed back to the vehicle controller; the vehicle controller is used to execute the discharge strategy corresponding to the normal state on the battery.

[0216] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of any of the above-mentioned discharge control methods are implemented.

[0217] In one embodiment, a computer program product is provided, comprising a computer program, wherein when the computer program is executed by a processor, the steps of any one of the above-mentioned discharge control methods are implemented.

[0218] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0219] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0220] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A discharge control method, characterized in that: The method comprises: In response to an abnormal state of a battery in a vehicle, obtaining a vehicle state of the vehicle; executing a discharge strategy corresponding to the vehicle state on the battery; different vehicle states correspond to different discharge strategies; When the vehicle reaches a preset power-off condition, the discharge strategy is stopped and the discharge of the battery is disconnected; the preset power-off condition includes that the battery temperature is less than a preset temperature threshold and the vehicle state is a preset state.

2. The method according to claim 1, characterized in that: The discharge strategy includes taking the target output power as the output power of the battery; Before executing the discharge strategy corresponding to the vehicle state on the battery, the method further includes: The target output power is determined according to the vehicle state.

3. The method according to claim 2, characterized in that The determining the target output power according to the vehicle state comprises: When the vehicle is in a driving state, the target output power is determined to be a first output power; the first output power is the sum of the powers required by target loads in the vehicle; the target loads include an electric drive system, a temperature control system and a low-voltage power supply of the vehicle.

4. The method according to claim 2, characterized in that: The determining the target output power according to the vehicle state comprises: When the vehicle is in a non-driving state, the target output power is determined to be a second output power; the second output power is the sum of the powers required by target loads in the vehicle; the target loads include a temperature control system and a low-voltage power supply of the vehicle.

5. The method according to any one of claims 1 to 4, characterized in that The discharging strategy includes taking the target output power as the output power of the battery; and executing the discharging strategy corresponding to the vehicle state on the battery includes: The link between the battery and the vehicle load is turned on, and the battery is controlled to output the target output power to discharge the vehicle load.

6. The method according to claim 5, characterized in that The link between the battery and the vehicle load is conducted, including: A relay connected to a link between the battery and the vehicle load is closed.

7. The method according to claim 5, characterized in that The controlling the battery to output the target output power comprises: A current adjustment instruction is sent to a control device connected to the battery; the current adjustment instruction is used to instruct the control device to adjust the discharge current of the battery so that the output power of the battery reaches the target output power.

8. The method according to any one of claims 1 to 4, characterized in that The executing a discharge strategy corresponding to the vehicle state on the battery includes: When the vehicle state does not change, maintaining the current discharge strategy for the battery; When the vehicle state changes, a discharge strategy corresponding to the changed vehicle state is executed on the battery.

9. The method according to any one of claims 1 to 4, characterized in that: The step of disconnecting the discharge of the battery comprises: A relay connected to the link between the battery and the vehicle load is disconnected.

10. The method according to any one of claims 1 to 4, characterized in that Before responding to an abnormal state of a battery in the vehicle, the method further includes: Obtaining target characteristic parameters of the battery; The temperature state of the battery is determined according to the target characteristic parameter.

11. The method according to claim 10, characterized in that The method further comprises: When the temperature state of the battery is a normal state, in response to the normal state of the battery, executing a discharge strategy corresponding to the normal state on the battery; In a case where the temperature state of the battery is in an abnormal state, the step of acquiring the vehicle state of the vehicle in response to the abnormal state of the battery in the vehicle is performed.

12. A discharge control device, characterized in that: The device comprises: an abnormal response module, for obtaining a vehicle state of the vehicle in response to an abnormal state of a battery in the vehicle; A strategy execution module, used for executing a discharge strategy corresponding to the vehicle state on the battery; different vehicle states correspond to different discharge strategies; A discharge disconnection module is used to stop executing the discharge strategy and disconnect the discharge of the battery when the vehicle reaches a preset power-off condition; the preset power-off condition includes that the battery temperature is less than a preset temperature threshold and the vehicle state is a preset state.

13. A vehicle, characterized in that: The vehicle includes a battery, a domain controller, a control device and a relay; the domain controller is connected to the battery through the control device and the relay; the domain controller is used to implement the steps of the method described in any one of claims 1 to 11.

14. A vehicle, characterized in that: The vehicle includes a battery, a vehicle controller and a battery management system; the battery management system is used to obtain a battery state and determine a discharge strategy corresponding to the vehicle state according to the received vehicle state; Different vehicle states correspond to different discharge strategies; The vehicle controller is used to respond to the abnormal state of the battery, obtain the vehicle state of the vehicle, receive the discharge strategy corresponding to the vehicle state, and execute the discharge strategy corresponding to the vehicle state on the battery, and when the vehicle reaches a preset power-off condition, stop executing the discharge strategy and disconnect the discharge of the battery; the preset power-off condition includes that the battery temperature is less than a preset temperature threshold and the vehicle state is a preset state.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 11 are implemented.

16. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 11 are implemented.

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