A power battery cooling method, device, vehicle and storage medium

Abstract

Embodiments of the present application provide a power battery cooling method, device, vehicle and storage medium. The power battery is connected with a charging pile, the power battery is configured with a battery cooling system, the charging pile is configured with a charging cooling system, and the battery cooling system is connected with the charging cooling system. The power battery cooling method comprises: detecting state information of the power battery when the power battery is charging; and starting at least one of the battery cooling system and the charging cooling system according to the state information to cool the power battery. According to the embodiments of the present application, when the power battery is charging, the state information of the power battery is detected, different cooling systems are started to cool the power battery, the temperature of the power battery is kept in a safe range, the phenomenon of power reduction caused by overheating is avoided, high-rate charging can be maintained, and charging efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power batteries, in particular to a power battery cooling method, a power battery cooling device, a vehicle and a computer readable storage medium. BACKGROUND

[0002] At present, the power battery is cooled by the battery cooling system of the vehicle itself during charging, and the cooling speed is limited by the refrigeration power of the vehicle refrigeration device and the lift of the water pump. However, due to the compact layout of vehicle parts, the refrigeration power of the refrigeration device and the lift of the water pump are very limited, resulting in that the temperature of the power battery rises too high during charging, especially during high-rate charging, and reaches the upper limit of the protection temperature. At this time, due to the protection mechanism of the battery, the charging power of the battery will be limited to protect the battery from damage or even thermal diffusion. Therefore, the battery cannot be charged at high rate for a long time during charging, and the charging time cannot be effectively reduced. SUMMARY

[0003] In view of the above problems, the present application is proposed to provide a power battery cooling method, a power battery cooling device, a vehicle and a computer readable storage medium which overcome the above problems or at least partially solve the above problems.

[0004] In a first aspect of the present application, the present application provides a power battery cooling method, wherein the power battery is connected with a charging pile, the power battery is configured with a battery cooling system, the charging pile is configured with a charging cooling system, and the battery cooling system is connected with the charging cooling system; the method comprises:

[0005] detecting state information of the power battery when the power battery is charging;

[0006] starting at least one of the battery cooling system and the charging cooling system according to the state information to cool the power battery.

[0007] Optionally, the state information includes a cell temperature, and the step of starting at least one of the battery cooling system and the charging cooling system according to the state information to cool the power battery comprises:

[0008] when the cell temperature is less than a first temperature threshold, starting the charging cooling system to cool the power battery;

[0009] when the cell temperature is greater than or equal to the first temperature threshold and less than a second temperature threshold, starting the battery cooling system to cool the power battery;

[0010] when the cell temperature is greater than or equal to a second temperature threshold, starting the battery cooling system and the charging cooling system to cool the power battery;

[0011] wherein the first temperature threshold is less than the second temperature threshold.

[0012] Optionally, the charging cooling system comprises a watering assembly, and the method further comprises:

[0013] when the state information satisfies a thermal runaway condition, starting the watering assembly to water the power battery.

[0014] Optionally, the state information comprises cell temperature rise data, and the step of starting the watering assembly to water the power battery when the state information satisfies the thermal runaway condition comprises:

[0015] when the cell temperature rise data is greater than a temperature rise threshold, starting the watering assembly to water the power battery.

[0016] Optionally, the power battery is connected with a battery management system, and the step of detecting the state information of the power battery comprises:

[0017] obtaining monitoring information sent by the battery management system;

[0018] determining that the monitoring information is the state information.

[0019] Optionally, the method further comprises:

[0020] judging whether the battery cooling system and the charging cooling system are connected;

[0021] when connected, performing the step of starting at least one of the battery cooling system and the charging cooling system according to the state information to cool the power battery.

[0022] Optionally, the method further comprises:

[0023] when not connected, issuing connection abnormal information.

[0024] In a second aspect of the present application, an embodiment of the present application further provides a power battery cooling device, the power battery is connected with a charging pile, the power battery is configured with a battery cooling system, the charging pile is configured with a charging cooling system, and the battery cooling system is connected with the charging cooling system; the device comprises:

[0025] a detection module configured to detect state information of the power battery when the power battery is charging;

[0026] A cooling module is configured to start at least one of the battery cooling system and the charging cooling system according to the state information to cool the power battery.

[0027] In a third aspect of the present application, an embodiment of the present application further provides a vehicle comprising a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program, when executed by the processor, implements the steps of the power battery cooling method as described above.

[0028] In a fourth aspect of the present application, an embodiment of the present application further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program, when executed by a processor, implements the steps of the power battery cooling method as described above.

[0029] The embodiment of the present application has the following advantages:

[0030] The embodiment of the present application detects the state information of the power battery when the power battery is charging, and starts the battery cooling system and / or the charging cooling system to cool the power battery according to the state information. By detecting the state information of the power battery when the power battery is charging, and starting different cooling systems to cool the power battery, the temperature of the power battery is kept in a safe range, the phenomenon of power reduction caused by overheating is avoided, high-rate charging can be maintained, charging time is reduced, and charging efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a step flow chart of an embodiment of the power battery cooling method of the present application;

[0032] Figure 2 is a step flow chart of another embodiment of the power battery cooling method of the present application;

[0033] Figure 3 is a step flow chart of an example of the power battery cooling method of the present application;

[0034] Figure 4 is a step flow chart of another example of the power battery cooling method of the present application;

[0035] Figure 5 is a step flow chart of another example of the power battery cooling method of the present application;

[0036] Figure 6 is a structural block diagram of an embodiment of the power battery cooling device of the present application. DETAILED DESCRIPTION

[0037] In order to make the above objectives, characteristics and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0038] In the related art, when the battery is charging, the power battery is cooled by relying on the water cooling system of the power battery of the vehicle itself, the water inlet flow of the power battery water cooling system is 15L / min (liter per minute), 20L / min (liter per minute), the water inlet temperature is 15℃, 20℃. The effect of cooling the battery is limited when fast charging, and the temperature of the cell is too high, which will limit the charging power when the temperature reaches the upper limit of the protection temperature, so as to protect the battery from damage or even thermal diffusion. The efficiency of the battery is not high. And if the thermal runaway phenomenon occurs during the charging process of the power battery, it is reduced by the exhaust means of the explosion-proof valve to reduce the possibility of fire, and there is no good way to actively extinguish the fire.

[0039] Reference Figure 1 , a step flow chart of an embodiment of a power battery cooling method of the present application is shown, the power battery is connected with a charging pile, the power battery is configured with a battery cooling system, the charging pile is configured with a charging cooling system, and the battery cooling system is connected with the charging cooling system.

[0040] In actual application process, the power battery can be packaged by multiple cells. The power battery can be installed on the vehicle, and the installation position of the power battery on the vehicle can be the chassis, the luggage compartment and the like, which is not limited in the embodiment of the present application. The battery cooling system configured for the power battery relies on the cooler and the water pump of the vehicle itself to exchange heat with the coolant in the battery cooling system, and transports the cooled coolant to the power battery to cool the power battery.

[0041] The charging pile can be connected with the charging interface on the vehicle through the charging gun to realize the connection with the power battery. The charging pile is configured with a charging cooling system, which can cool the charging pile and also can connect with the power battery. Specifically, in the embodiment of the present application, the charging pile can be provided with a water circuit gun, which can be connected with the vehicle to realize the connection between the charging cooling system and the battery cooling system.

[0042] The power battery cooling method can specifically include the following steps:

[0043] Step 101, detecting the state information of the power battery when the power battery is charging;

[0044] In practical applications, the charging pile and the charging gun are connected with the vehicle, so that the power battery can be connected with the charging pile through the charging gun, and the charging pile charges the power battery through the charging gun. The charging form includes but is not limited to 7 kilowatt-hour slow charging, 30 kilowatt-hour fast charging, and even super charging above 30 kilowatt-hour. In the process of charging the power battery by the charging pile, the state information of the power battery is detected in real time.

[0045] In step 102, at least one of the battery cooling system and the charging cooling system is started according to the state information, and the power battery is cooled.

[0046] According to the state information, the operating condition of the power battery during charging is determined, one of the battery cooling system of the power battery and the charging cooling system of the charging pile is started in real time, or the battery cooling system and the charging cooling system are started at the same time to cool the power battery, so that the battery can be charged in a safe operating condition.

[0047] In the embodiment of the application, when the power battery is charged, the state information of the power battery is detected; the battery cooling system and / or the charging cooling system are started according to the state information to cool the power battery. By detecting the state information of the power battery when the power battery is charged, different cooling systems are started to cool the power battery, so that the temperature of the power battery is kept in a safe range, the phenomenon of power drop caused by overheating is avoided, high-rate charging can be maintained, charging time is reduced, and charging efficiency is improved.

[0048] Reference Figure 2 , shows a step flow chart of another power battery cooling method embodiment of the application, the power battery is connected with a charging pile, the power battery is configured with a battery cooling system, the charging pile is configured with a charging cooling system, the battery cooling system is connected with the charging cooling system, and the charging cooling system includes a irrigation assembly.

[0049] In practical applications, the water inflow of the battery cooling system can be 15 liters per minute, and the water temperature is 15 degrees Celsius. The water temperature of the charging cooling system is controlled at 5 degrees Celsius, and the flow rate can reach 30 liters per minute. The battery cooling system can be communicated with the charging cooling system, that is, the cooling liquid of the charging cooling system can flow into the pipeline of the battery cooling system. The cooling liquid can be water, or a cooling liquid composed of water as a base body, combined with antifreeze and additives. According to different antifreeze components, the synthetic cooling liquid can be divided into alcohol type, glycerol type, ethylene glycol type and other types. The type of the cooling liquid can be selected by those skilled in the art according to the needs, and the embodiment of the application does not make specific limitations.

[0050] Further, the charging cooling system can comprise a watering assembly for spraying the cooling liquid in the charging cooling system onto the power battery, and the flow rate of the watering can be the same as that of the charging cooling system, so that the cooling liquid can be quickly sprayed onto the power battery.

[0051] The power battery cooling method can specifically comprise the following steps:

[0052] Step 201, detecting state information of the power battery when the power battery is charging;

[0053] In the embodiment of the application, when the power battery is connected to the charging pile and the charging pile charges the power battery at a certain power, the state information of the power battery can be detected in real time to determine the operating condition of the power battery.

[0054] Further, in actual application, the power battery can be connected to a battery management system, and the battery management system can monitor physical parameters such as temperature, voltage and current of the power battery in real time through sensors to generate monitoring information. The step of detecting the state information of the power battery comprises:

[0055] Sub-step S2011, obtaining the monitoring information sent by the battery management system;

[0056] The monitoring information sent by the battery management system can be obtained, wherein the monitoring information can be transmitted by using a specific message, and the monitoring information can be obtained by analyzing the message.

[0057] Sub-step S2012, determining that the monitoring information is the state information.

[0058] The obtained monitoring information is determined as the state information of the power battery, and the current operating condition of the power battery is determined according to the state information.

[0059] Step 202, starting at least one of the battery cooling system and the charging cooling system according to the state information to cool the power battery;

[0060] At least one of the battery cooling system and the charging cooling system is started according to the state information to cool the power battery, so that the power battery can be maintained at a rated operating temperature to charge at a high rate.

[0061] Specifically, the state information can comprise a cell temperature, wherein the cell temperature can comprise an average temperature of all cells in the power battery, a highest temperature of a single cell in all cells or a lowest temperature of a single cell in all cells. The step of starting at least one of the battery cooling system and the charging cooling system according to the state information to cool the power battery comprises:

[0062] Sub-step S2021, when the battery cell temperature is less than the first temperature threshold, the charging cooling system is started to cool the power battery.

[0063] When the battery cell temperature is less than the first temperature threshold, it means that the battery cell temperature is too low. During the charging process of the power battery, the temperature of the power battery is too low, and the electric energy of the power battery will be consumed for battery heat preservation, which will also cause the power for charging to decrease. During the charging process, the charging pile will use the charging cooling system for heat dissipation. At this time, the charging cooling system can be started, and the high-temperature cooling liquid in the charging cooling system flows through the power battery. The cooling liquid transfers heat to the power battery when flowing through the power battery, and the power battery is heated or heated, and the cooling liquid is cooled, so that the power for charging can be fully used for the charging of the power battery. Specifically, the lowest temperature of a single battery cell in the power battery can be compared with the first temperature threshold. When the lowest temperature of the single battery cell is lower than the first temperature threshold, the charging cooling system is started. The comparison method of the lowest temperature of the single battery cell and the first temperature threshold can be by difference method, ratio method, number axis method, etc. The embodiments of the present application do not make specific limitation on this.

[0064] Sub-step S2022, when the battery cell temperature is greater than or equal to the first temperature threshold and less than the second temperature threshold, the battery cooling system is started to cool the power battery.

[0065] In actual application, when the battery cell temperature is greater than or equal to the first temperature threshold and less than the second temperature threshold, it can be considered that the power battery is in a working temperature range under a room temperature condition, and only the battery cooling system configured for the power battery is started to cool, so as to ensure that the temperature of the power battery is in the working temperature range. Therefore, the battery cooling system is started to cool the power battery. Specifically, the average temperature of the battery cells in the power battery can be compared with the first temperature threshold and the second battery temperature threshold, respectively. When the average temperature is equal to or higher than the first temperature threshold and lower than the second battery temperature threshold, the battery cooling system is started. The first temperature threshold is less than the second temperature threshold.

[0066] Sub-step S2023, when the battery cell temperature is greater than or equal to the second temperature threshold, the battery cooling system and the charging cooling system are started to cool the power battery.

[0067] In practical application, when the temperature of the battery cell is greater than or equal to the second temperature threshold, it indicates that the temperature of the battery cell is too high, and only the cooling of the battery cooling system is insufficient to keep the power battery in the conventional working temperature range. Therefore, when the temperature of the battery cell is greater than or equal to the second temperature threshold, the battery cooling system and the charging cooling system can be started at the same time, and the power battery can be cooled by the battery cooling system and the charging cooling system, so that the temperature of the power battery can be kept in the conventional working range, and the power battery can keep high-rate charging. Specifically, the highest temperature of a single battery cell in the power battery can be compared with the first temperature threshold, and when the highest temperature of the single battery cell is equal to or greater than the second temperature threshold, the charging cooling system and the battery cooling system are started.

[0068] In an embodiment of the present application, the method further comprises:

[0069] Step S1, judging whether the battery cooling system and the charging cooling system are connected or not;

[0070] In an embodiment of the present application, before starting the charging cooling system, it can be judged whether the battery cooling system and the charging cooling system are connected or not, so as to avoid the phenomenon that the charging cooling system is started but cannot cool the power battery. For the judgment method, a sensor can be arranged at the connection of the battery cooling system and the charging cooling system, and whether the battery cooling system and the charging cooling system are connected or not can be determined by the signal of the sensor.

[0071] Step S2, when connected, executing the step of starting at least one of the battery cooling system and the charging cooling system according to the state information to cool the power battery.

[0072] When it is determined that the battery cooling system and the charging cooling system are connected, the step of starting the battery cooling system and / or the charging cooling system to cool the power battery is executed, so as to ensure the cooling effect.

[0073] Step S3, when not connected, issuing a connection abnormal information.

[0074] When it is determined that the battery cooling system and the charging cooling system are not connected, the connection abnormal information can be sent by the vehicle terminal on the vehicle to remind the driver that the battery cooling system and the charging cooling system are not connected. Further, the connection abnormal information can be displayed on the display component on the vehicle, or can be sent to the mobile terminal of the driver by the vehicle terminal and displayed on the mobile terminal.

[0075] Step 203, when the state information meets the thermal runaway condition, starting the irrigation component to irrigate the power battery.

[0076] When the state information meets the thermal runaway condition, i.e., at least one cell in the power battery has thermal runaway, the irrigation assembly can be started to irrigate the power battery, so as to avoid the thermal runaway of the cell causing the vehicle to catch fire, thereby improving the safety of the power battery.

[0077] In an embodiment of the present application, the state information includes cell temperature rise data, and the step of starting the irrigation assembly to irrigate the power battery when the state information meets the thermal runaway condition comprises:

[0078] In sub-step S2031, when the cell temperature rise data is greater than a temperature rise threshold, the irrigation assembly is started to irrigate the power battery.

[0079] In an embodiment of the present application, the state information of the power battery can include cell temperature rise data. When the cell temperature rise data is greater than a temperature rise threshold, it can be determined that the cell is in a thermal runaway state, and the irrigation assembly is started to irrigate the power battery with cooling liquid, so as to avoid a fire and reduce overall losses caused by thermal runaway.

[0080] In an embodiment of the present application, a suitable cooling system is started according to the temperature of the cell to cool the power battery, so as to reduce the temperature of the cell during charging, maintain the safety and high-rate charging of the cell, and determine whether the cell has thermal runaway according to the cell temperature rise data. When thermal runaway occurs, the irrigation assembly is started to irrigate the power battery with cooling liquid, so as to avoid a fire and reduce overall losses caused by thermal runaway.

[0081] In order for those skilled in the art to better understand the embodiments of the present application, the embodiments of the present application are described below through three examples:

[0082] Referring to Figure 3 , a step flow chart of an example of a power battery cooling method of the present application is shown; specifically, the present example is used to illustrate the fast-charging cooling working condition of the power battery:

[0083] After the water circuit gun and the charging gun are connected, it is determined whether the connection of the water circuit gun and the charging gun is normal, and if not, the water circuit gun and the charging gun are reconnected.

[0084] If the connection of the water circuit gun and the charging gun is normal, the state information of the battery is detected in real time after the BMS (Battery Management System, battery management system) determines that the power battery enters the fast-charging mode.

[0085] It is determined whether the temperature of the cell is in the range of 25 to 40 degrees Celsius, and if so, the battery cooling system is started to cool the power battery.

[0086] If no, further determine whether the maximum temperature of the battery cell is greater than or equal to 40 degrees Celsius, if no, neither the battery cooling system nor the charging pile cooling system (charging cooling system) works. If yes, start the charging pile cooling system to cool the power battery at a flow rate of 30 liters per minute, and after the power battery is cooled below 30 degrees Celsius, the charging pile cooling system is turned off.

[0087] Referring to Figure 4 , a step flow chart of another example of the power battery cooling method of the application is shown; specifically, this example is used to illustrate the low-temperature heating working condition of the power battery charging:

[0088] After the water circuit gun and the charging gun of the charging pile are connected, it is determined whether the connection of the water circuit gun and the charging gun is normal, if not, the water circuit gun and the charging gun are reconnected.

[0089] If the connection of the water circuit gun and the charging gun is normal, after the BMS detects that the power battery enters the fast charging mode, the state information of the battery is detected in real time.

[0090] Determine whether the minimum temperature of the battery cell is in the range of minus 10 degrees Celsius to plus 5 degrees Celsius, if yes, start the battery cooling system.

[0091] If no, further determine whether the minimum temperature of the battery cell is below minus 10 degrees Celsius and the water temperature of the charging cooling system is greater than 50 degrees Celsius, if yes, start the charging cooling system, and stop the charging cooling system after the minimum temperature of the battery cell is greater than 5 degrees Celsius. If the further determination result is no, neither the battery cooling system nor the charging cooling system works.

[0092] Referring to Figure 5 , a step flow chart of another example of the power battery cooling method of the application is shown; specifically, this example is used to illustrate the low-temperature heating working condition of the power battery charging:

[0093] After the water circuit gun and the charging gun of the charging pile are connected, it is determined whether the connection of the water circuit gun and the charging gun is normal, if not, the water circuit gun and the charging gun are reconnected.

[0094] If the connection of the water circuit gun and the charging gun is normal, after the BMS detects that the power battery enters the fast charging mode, the state information of the battery is detected in real time.

[0095] When it is determined that thermal runaway occurs, start the charging cooling system, and spray 5 degrees Celsius cooling liquid on the power battery at a flow rate of 30 liters per minute through the irrigation assembly.

[0096] It should be noted that for the method embodiments, the series of acts complement each other to achieve the purpose of this embodiment, therefore, the sequence of the acts should not be construed as limiting the application. In addition, those skilled in the art should understand that the application can be implemented by one or more computer programs comprising computer executable instructions embodied in computer readable media for use by or in connection with computers or instruction execution systems.

[0097] Referring to Figure 6 , a structural block diagram of an embodiment of a power battery cooling device is shown, the power battery is connected with a charging pile, the power battery is configured with a battery cooling system, the charging pile is configured with a charging cooling system, the battery cooling system is connected with the charging cooling system; the device can specifically include the following modules:

[0098] The detection module 601 is configured to detect state information of the power battery when the power battery is charging.

[0099] The cooling module 602 is configured to start at least one of the battery cooling system and the charging cooling system according to the state information to cool the power battery.

[0100] In a preferred embodiment of the application, the state information includes a cell temperature, and the cooling module 602 includes:

[0101] The first cooling submodule is configured to start the charging cooling system to cool the power battery when the cell temperature is less than a first temperature threshold.

[0102] The second cooling submodule is configured to start the battery cooling system to cool the power battery when the cell temperature is greater than or equal to the first temperature threshold and less than a second temperature threshold.

[0103] The third cooling submodule is configured to start the battery cooling system and the charging cooling system to cool the power battery when the cell temperature is greater than or equal to the second temperature threshold.

[0104] The first temperature threshold is less than the second temperature threshold.

[0105] In a preferred embodiment of the application, the charging cooling system includes a watering assembly, and the device further includes:

[0106] The thermal runaway module is configured to start the watering assembly to water the power battery when the state information meets a thermal runaway condition.

[0107] In a preferred embodiment of the application, the state information includes cell temperature rise data, and the thermal runaway module includes:

[0108] a thermal runaway submodule configured to start the irrigation assembly to irrigate the power battery when the temperature rise data of the battery cell is greater than a temperature rise threshold.

[0109] In a preferred embodiment of the present application, the power battery is connected with a battery management system, and the detection module 601 comprises:

[0110] an acquisition submodule configured to acquire monitoring information sent by the battery management system;

[0111] a determination submodule configured to determine that the monitoring information is the state information.

[0112] In a preferred embodiment of the present application, the device further comprises:

[0113] a judgment module configured to judge whether the battery cooling system and the charging cooling system are in communication;

[0114] a communication module configured to execute the step of starting at least one of the battery cooling system and the charging cooling system to cool the power battery according to the state information when the battery cooling system and the charging cooling system are in communication.

[0115] In a preferred embodiment of the present application, the device further comprises:

[0116] a sending module configured to send connection abnormal information when the battery cooling system and the charging cooling system are not in communication.

[0117] For the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the related parts refer to the part of the method embodiment.

[0118] The present application also provides a vehicle comprising:

[0119] a processor and a storage medium, the storage medium storing a computer program executable by the processor, and when the electronic device is running, the processor executes the computer program to execute the method according to any one of the embodiments of the present application. The specific implementation and technical effects are similar to those of the method embodiment, and will not be repeated here.

[0120] The present application also provides a computer readable storage medium, the storage medium storing a computer program, and the computer program being executed by a processor to execute the method according to any one of the embodiments of the present application. The specific implementation and technical effects are similar to those of the method embodiment, and will not be repeated here.

[0121] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts between the embodiments can be referred to each other.

[0122] Those skilled in the art will appreciate that embodiments of the present application can be readily used as a method, apparatus, or computer program product. Accordingly, embodiments of the present application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application can take the form of a computer program product on one or more computer-readable storage media (including, but not limited to, disk memory, CD-ROMs, optical storage devices, etc.) embodying computer readable program code.

[0123] Embodiments of the present application are described herein with reference to the drawings, which are as follows: Figure 1 one or more functions specified in a flow or multiple flows and / or blocks. Figure 1 means for performing each of the functions specified in the flow or flows and / or blocks.

[0124] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the flow Figure 1 one or more functions specified in a flow or multiple flows and / or blocks. Figure 1 means for performing each of the functions specified in the flow or flows and / or blocks.

[0125] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the flow Figure 1 one or more functions specified in a flow or multiple flows and / or blocks. Figure 1 means for performing each of the functions specified in the flow or flows and / or blocks.

[0126] While preferred embodiments of the present application have been described, additional variations and modifications can be made to these embodiments by those skilled in the art once they have the benefit of the foregoing description. Therefore, the appended claims are intended to encompass within their scope all such variations and modifications as are included within the scope of the present application.

[0127] Finally, it needs to be pointed out that in this document, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying that there is any such actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or terminal device including a list of elements does not only include those elements, but also includes other elements not explicitly listed, or further includes elements inherent in such a process, method, article, or terminal device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article, or terminal device including the element.

[0128] The above describes in detail the power battery cooling method, device, vehicle and storage medium provided by the present application. The principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manners and application ranges can be changed. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A method of cooling a power cell, characterized by, The power battery is connected with a charging pile, the power battery is provided with a battery cooling system, the charging pile is provided with a charging cooling system, and the battery cooling system is connected with the charging cooling system; the method comprises: When the power battery is charging, detecting state information of the power battery; the state information comprises a cell temperature; According to the state information, at least one of the battery cooling system and the charging cooling system is started to cool the power battery; During the charging process, the charging pile will use the charging cooling system for heat dissipation; The step of starting at least one of the battery cooling system and the charging cooling system to cool the power battery according to the state information comprises: When the cell temperature is less than a first temperature threshold, only the charging cooling system is started to heat and / or keep warm the power battery based on a cooling liquid in the charging cooling system; When the cell temperature is greater than or equal to the first temperature threshold and less than a second temperature threshold, only the battery cooling system is started to cool the power battery; When the cell temperature is greater than or equal to the second temperature threshold, the battery cooling system and the charging cooling system are started to cool the power battery; The first temperature threshold is less than the second temperature threshold.

2. The method of claim 1, wherein, The charging cooling system comprises a watering assembly, and the method further comprises: When the state information meets a thermal runaway condition, the watering assembly is started to water the power battery.

3. The method of claim 2, wherein, The state information comprises cell temperature rise data, and the step of starting the watering assembly to water the power battery when the state information meets the thermal runaway condition comprises: When the cell temperature rise data is greater than a temperature rise threshold, the watering assembly is started to water the power battery.

4. The method of claim 1, wherein, The power battery is connected with a battery management system, and the step of detecting the state information of the power battery comprises: Obtaining monitoring information sent by the battery management system; Determining that the monitoring information is the state information.

5. The method of claim 1, wherein, The method further comprises: Determining whether the battery cooling system and the charging cooling system are connected; When connected, the step of starting at least one of the battery cooling system and the charging cooling system to cool the power battery according to the state information is performed.

6. The method of claim 1, wherein, The method further comprises: When not connected, connection exception information is sent.

7. A power cell cooling device, characterized by, The power battery is connected with a charging pile, the power battery is provided with a battery cooling system, the charging pile is provided with a charging cooling system, and the battery cooling system is connected with the charging cooling system; the device comprises: A detection module is configured to detect state information of the power battery when the power battery is charging; the state information comprises a cell temperature; during the charging process, the charging pile will use the charging cooling system for heat dissipation; A cooling module is configured to start at least one of the battery cooling system and the charging cooling system to cool the power battery according to the state information; The cooling module comprises: a first cooling submodule configured to start only the charging cooling system to heat and / or keep warm the power battery based on a cooling liquid in the charging cooling system when the cell temperature is less than a first temperature threshold; a second cooling submodule configured to start the battery cooling system to cool the power battery when the cell temperature is greater than or equal to the first temperature threshold and less than a second temperature threshold; a third cooling submodule configured to start only the battery cooling system and the charging cooling system to cool the power battery when the cell temperature is greater than or equal to the second temperature threshold; wherein the first temperature threshold is less than the second temperature threshold.

8. A vehicle characterized by comprising: A computer program product comprising a processor, a memory, and a computer program stored on the memory and loadable on the processor, the computer program implementing the steps of the power battery cooling method according to any one of claims 1 to 6 when executed by the processor.

9. A computer-readable storage medium, characterized in that, A computer program product comprising a processor, a memory, and a computer program stored on the memory and loadable on the processor, the computer program implementing the steps of the power battery cooling method according to any one of claims 1 to 6 when executed by the processor.

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