Thermal management method and device before starting charging of vehicle, vehicle and storage medium

Abstract

The invention relates to the technical field of vehicles, in particular to a thermal management method and device for a vehicle before starting charging, the vehicle and a storage medium, and the method comprises the steps that whether a charging gun is inserted into the current vehicle or not is judged; under the condition that a charging gun is inserted into the current vehicle, the battery electric quantity and the battery cell temperature are obtained, a thermal management strategy is determined according to the battery electric quantity and the battery cell temperature, and the battery pack is heated or cooled according to the thermal management strategy till the battery electric quantity and / or the battery cell temperature meet the preset stopping condition. Therefore, the problems of preheating failure, electric quantity waste and the like caused by the fact that a user is difficult to accurately grasp the preheating time and forgets to start in advance or does not charge on time after starting in advance are solved, a more convenient heat management scheme is provided for user charging, the charging speed is increased, and the charging experience of the user in winter and summer is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a vehicle pre-starting charging thermal management method and device, a vehicle and a storage medium. BACKGROUND

[0002] Fast charging technology is the core of the electric vehicle charging system. With the rapid development of 800V high-voltage super charging, 2C to 5C batteries are successively applied in batches, and 6C battery start-up pre-research is carried out, all of which declare the gradual maturity of the super charging era.

[0003] The running environment of electric vehicles is complex and changeable, and the fast charging scheme is limited by the migration / diffusion rate of active lithium ions in the battery and the thermal management capability. At a low temperature below 0℃, the charging current will be limited, and at a high temperature, the battery electrolyte is unstable and prone to thermal runaway, so the charging current also needs to be limited or even stopped. To solve this problem, related technologies have made corresponding research, including pre-heating the battery before charging, pre-heating before charging at ultra-low temperature, and so on.

[0004] However, the related technology still has some inconvenience. Many users have difficulty remembering to start pre-heating before charging, and often think of operating when charging, or start pre-heating about two and a half hours in advance, but do not charge on time, resulting in a decrease in the temperature of the battery cell after pre-heating ends, and waste of the power consumption of heating. SUMMARY

[0005] The present application provides a vehicle pre-starting charging thermal management method and device, a vehicle and a storage medium to solve the problem that users have difficulty accurately grasping the pre-heating timing and are prone to forgetting to start pre-heating in advance or not charging on time after starting pre-heating, resulting in pre-heating failure and power waste, and to provide a more convenient thermal management scheme for user charging, speed up the charging speed, and improve the user charging experience in winter and summer.

[0006] The first aspect of the present application provides a vehicle pre-starting charging thermal management method, comprising the following steps:

[0007] determining whether the current vehicle is inserted into a charging gun;

[0008] In the case that the current vehicle is inserted into the charging gun, the battery power and the battery cell temperature are obtained, a thermal management strategy is determined according to the battery power and the battery cell temperature, and the battery pack is heated or cooled according to the thermal management strategy until the battery power and / or the battery cell temperature meets a preset stop condition.

[0009] Optionally, in some embodiments, the step of determining a thermal management strategy according to the battery power and the battery cell temperature, and heating or cooling the battery pack according to the thermal management strategy until the battery power and / or the battery cell temperature meets a preset stop condition comprises:

[0010] heating the battery pack by using a preset PTC heating device, until the battery power and / or the battery cell temperature meets a preset stop condition.

[0011] Optionally, in some embodiments, the determining the thermal management strategy according to the battery power and the battery cell temperature, and cooling the battery pack according to the thermal management strategy until the battery power and / or the battery cell temperature meets a preset stop condition, comprises:

[0012] cooling or heating the battery pack by using a preset EAS cooling device, until the battery power and / or the battery cell temperature meets a preset stop condition.

[0013] Optionally, in some embodiments, the preset stop condition is that the battery power is lower than a third power threshold, or the battery cell temperature is in a preset temperature range.

[0014] Optionally, in some embodiments, after the cooling or heating the battery pack according to the thermal management strategy until the battery power and / or the battery cell temperature meets a preset stop condition, comprising:

[0015] generating a charging reminder instruction, and performing charging reminder based on the charging reminder instruction.

[0016] The second aspect embodiment of the present application provides a thermal management device before vehicle starting charging, comprising:

[0017] a judging module, configured to judge whether a current vehicle is inserted into a charging gun;

[0018] a thermal management module, configured to, in the case that the current vehicle is inserted into the charging gun, acquire a battery power and a battery cell temperature, determine a thermal management strategy according to the battery power and the battery cell temperature, and cool or heat a battery pack according to the thermal management strategy until the battery power and / or the battery cell temperature meets a preset stop condition.

[0019] Optionally, in some embodiments, the thermal management module comprises:

[0020] a first thermal management unit, configured to, in the case that the battery power is higher than a first power threshold and the battery cell temperature is lower than a first temperature threshold, heat the battery pack by using a preset PTC heating device until the battery power and / or the battery cell temperature meets a preset stop condition.

[0021] Optionally, in some embodiments, the thermal management module includes:

[0022] The second thermal management unit is used to cool the battery pack using a preset EAS cooling device when the battery charge is higher than a second charge threshold and the cell temperature is higher than a second temperature threshold, until the battery charge and / or the cell temperature meet preset stop conditions.

[0023] Optionally, in some embodiments, the preset stopping condition is: the battery charge is lower than a third charge threshold, or the cell temperature is within a preset temperature range.

[0024] Optionally, in some embodiments, after heating or cooling the battery pack according to the thermal management strategy until the battery charge and / or the cell temperature meet a preset stop condition, the thermal management module includes:

[0025] The reminder unit is used to generate a charging reminder command and provide a charging reminder based on the charging reminder command.

[0026] A third aspect of this application provides a vehicle, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the thermal management method for vehicle startup charging as described in the above embodiments.

[0027] A fourth aspect of this application provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the thermal management method for vehicle startup charging as described in the above embodiments.

[0028] Therefore, by determining whether the charging gun is currently plugged into the vehicle, and if so, acquiring the battery level and cell temperature, a thermal management strategy is determined based on these parameters. The battery pack is then heated or cooled according to this strategy until the battery level and / or cell temperature meet preset stopping conditions. This solves the problem of users struggling to accurately time preheating, often forgetting to turn it on in advance or failing to charge on time after turning it on, leading to preheating failure and wasted power. It provides users with a more convenient thermal management solution, speeds up charging, and improves the charging experience in both winter and summer.

[0029] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0030] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0031] Figure 1 A flowchart of a method for thermal management before vehicle starting charging according to an embodiment of the present application is provided.

[0032] Figure 2 A schematic diagram of the principle of a method for thermal management before vehicle starting charging according to an embodiment of the present application is provided.

[0033] Figure 3 A flowchart of a method for thermal management before vehicle starting charging according to an embodiment of the present application is provided.

[0034] Figure 4 A schematic diagram of a circuit according to an embodiment of the present application is provided.

[0035] Figure 5 A block schematic diagram of a device for thermal management before vehicle starting charging according to an embodiment of the present application is provided.

[0036] Figure 6 A schematic diagram of a vehicle according to an embodiment of the present application is provided. DETAILED DESCRIPTION

[0037] Embodiments of the present application are described in detail below with reference to the accompanying drawings, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0038] A method for thermal management before vehicle starting charging, a device for thermal management before vehicle starting charging, a vehicle and a storage medium according to embodiments of the present application are described below with reference to the accompanying drawings. In view of the problem that it is difficult for a user to accurately grasp the pre-heating timing and pre-heating failure and power waste are prone to occur due to forgetting to start pre-heating in advance or not charging in time after starting pre-heating in advance, the present application provides a method for thermal management before vehicle starting charging, in which, whether the current vehicle is inserted into a charging gun is determined, the battery power and the battery cell temperature are obtained in the case that the current vehicle is inserted into the charging gun, the thermal management strategy is determined according to the battery power and the battery cell temperature, and the battery pack is heated or cooled according to the thermal management strategy until the battery power and / or the battery cell temperature meet the preset stop condition. Thus, the problem that it is difficult for a user to accurately grasp the pre-heating timing and pre-heating failure and power waste are prone to occur due to forgetting to start pre-heating in advance or not charging in time after starting pre-heating in advance are solved, a more convenient thermal management scheme for user charging is provided, the charging speed is accelerated, and the user's charging experience in winter and summer is improved.

[0039] Specifically, Figure 1 A flowchart of a method for thermal management before vehicle starting charging according to an embodiment of the present application is provided.

[0040] As Figure 1 shown, the vehicle pre-charging thermal management method includes the following steps:

[0041] In step S101, it is determined whether the current vehicle is inserted into a charging gun.

[0042] Specifically, when a normal electric vehicle is charging, the user needs at least 2 minutes to insert the gun to actually swipe the card to start charging, and some users need to download an APP, recharge, scan a code to start charging, etc., which takes more than 10 minutes. The application fully utilizes the time before charging to preheat / cool the battery. When the user charges the gun, the vehicle controller recognizes the insertion of the charging gun and determines that the user has a charging demand.

[0043] In step S102, in the case where the current vehicle is inserted into the charging gun, the battery capacity and the cell temperature are obtained, the thermal management strategy is determined according to the battery capacity and the cell temperature, and the battery pack is heated or cooled according to the thermal management strategy until the battery capacity and / or the cell temperature meets the preset stopping condition.

[0044] The preset stopping condition is that the battery capacity is lower than a third capacity threshold, or the cell temperature is in a preset temperature interval. The third capacity threshold and the preset temperature interval can be pre-set by the user, can be obtained through a limited number of experiments, or can be obtained through a limited number of computer simulations. Herein, no specific limitation is made, and preferably, the third capacity threshold is 10%, and the preset temperature interval is [28℃, 35℃].

[0045] Specifically, when the vehicle is inserted into the charging gun, the system will immediately obtain the battery capacity and the cell temperature, two key parameters. Based on the battery capacity and the cell temperature, the system will intelligently determine the corresponding thermal management strategy, for example, heating the battery pack at low temperature, and cooling at high temperature. Then, the system will heat or cool the battery pack according to this strategy. This process will continue until the battery capacity and / or the cell temperature reaches the preset stopping condition.

[0046] Further, in some embodiments, the thermal management strategy is determined according to the battery capacity and the cell temperature, and the battery pack is heated or cooled according to the thermal management strategy until the battery capacity and / or the cell temperature meets the preset stopping condition, which includes: when the battery capacity is higher than a first capacity threshold and the cell temperature is lower than a first temperature threshold, using a preset PTC heating device to heat the battery pack until the battery capacity and / or the cell temperature meets the preset stopping condition.

[0047] The first electric quantity threshold and the first temperature threshold can be preset by a user, can be obtained through a limited number of experiments, or can be obtained through a limited number of computer simulations, and are not limited here. Preferably, the first electric quantity threshold is 10%, and the first temperature threshold is 20℃.

[0048] Specifically, as shown in Figure 2 and Figure 3 When the vehicle is inserted into the charging gun, the system determines a thermal management strategy according to the battery electric quantity and the cell temperature. If the battery electric quantity is higher than the first electric quantity threshold set to prevent the battery electric quantity from being too low and ensure that the battery is within a safe electric quantity range, and the cell temperature is lower than the first temperature threshold set, the system starts a preset PTC heating device to heat the battery pack. This heating process continues until the battery electric quantity and / or the cell temperature meet a preset stop condition, so as to ensure that the battery is charged at an appropriate temperature, and improve the charging efficiency and safety.

[0049] In actual execution, as shown in Figure 2 and Figure 3 The embodiment of the application can first query the SOC (State of Charge) and the cell temperature of the BMS (Battery Management System) power battery through the VCU (Vehicle Control Unit). If the SOC is higher than 10% and the cell temperature is lower than 20℃, the vehicle electronic constant temperature controller ECC sends a battery heating instruction, and the battery heater PTC starts heating.

[0050] Optionally, in some embodiments, the thermal management strategy is determined according to the battery electric quantity and the cell temperature, and the battery pack is cooled according to the thermal management strategy until the battery electric quantity and / or the cell temperature meet a preset stop condition, including: when the battery electric quantity is higher than a second electric quantity threshold and the cell temperature is higher than a second temperature threshold, a preset EAS cooling device is used to heat or cool the battery pack until the battery electric quantity and / or the cell temperature meet the preset stop condition.

[0051] The second electric quantity threshold and the second temperature threshold can be preset by a user, can be obtained through a limited number of experiments, or can be obtained through a limited number of computer simulations, and are not limited here. Preferably, the second electric quantity threshold is 10%, and the second temperature threshold is 40℃.

[0052] Specifically, the system determines the thermal management strategy according to the battery power and the cell temperature. When the battery power is higher than a second power threshold (which is intended to ensure that the battery is in a safe power range) and the cell temperature is higher than a second temperature threshold, the system enables the preset EAS refrigeration device to cool the battery pack. This cooling process will continue until the battery power and / or the cell temperature reaches a preset stop condition, so as to ensure that the battery is charged at an appropriate temperature, thereby improving the charging efficiency and safety.

[0053] In actual implementation, in combination with FIGS. 1 to 3, the VCU determines whether the SOC of the power battery is higher than 10% and the cell temperature is higher than 40°C. When the cell temperature is higher than 40°C, the ECC sends a battery cooling instruction, and the compressor EAS starts to work. Until the battery SOC is less than or equal to 10% or the cell temperature is between 28°C and 35°C, the plug-in intelligent thermal management system sends a cancellation instruction to stop the battery heater or the battery cooling system from working. Figure 2 Figure 3 As shown in FIGS. 1 to 3, the VCU determines whether the SOC of the power battery is higher than 10% and the cell temperature is higher than 40°C. When the cell temperature is higher than 40°C, the ECC sends a battery cooling instruction, and the compressor EAS starts to work. Until the battery SOC is less than or equal to 10% or the cell temperature is between 28°C and 35°C, the plug-in intelligent thermal management system sends a cancellation instruction to stop the battery heater or the battery cooling system from working.

[0054] Optionally, in some embodiments, after the battery pack is heated or cooled according to the thermal management strategy until the battery power and / or the cell temperature meets the preset stop condition, the method further includes: generating a charging reminder instruction, and performing charging reminder based on the charging reminder instruction.

[0055] Specifically, after the battery pack is heated or cooled according to the thermal management strategy and the battery power and / or the cell temperature meets the preset stop condition, the system generates a charging reminder instruction and performs charging reminder based on the instruction. For example, when the SOC is less than or equal to 10% or the cell temperature is between 28°C and 35°C, the system determines that the stop condition is met, and then generates a charging reminder instruction. A prompt box is popped up on the central control screen of the vehicle, displaying "the battery has been preheated / cooled, and charging can be started". At the same time, a prompt sound is played in the vehicle to remind the user to perform charging operation.

[0056] The embodiments of the present application also provide a control circuit based on the thermal management method before the vehicle starts charging, as shown in FIG. 4. Figure 4 As shown in FIG. 4, when the user plugs in the gun to trigger intelligent thermal management, the main positive contactor and the main negative contactor are closed. The vehicle controller determines whether the battery needs to be heated or cooled according to the cell temperature. If the battery needs to be heated, K1 is closed, and the battery heater works. If the battery needs to be cooled, K2 is closed, and the battery cooling device works. When the user scans the code to start charging, the main positive contactor, the main negative contactor and K1 or K2 are actively disconnected. Then the fast charging positive contactor and the fast charging negative contactor are closed. Subsequently, the main positive contactor and the main negative contactor are closed, and the battery pack starts to charge. If the battery pack still has thermal management needs at this time, K1 or K2 is closed, and the output current of the charging pile is shunted to the thermal management device to work.

[0057] ​In summary, the current new energy vehicle is charging and heating / cooling at the same time, and the battery temperature is often not suitable at the beginning of charging, resulting in slow charging speed and long user waiting time. The embodiment of the application increases the plug-in gun recognition charging demand on the basis of the original power battery thermal management function, prepositions the thermal management work, and starts the pre-heating / pre-cooling function of the battery pack in advance. That is, after plugging in the gun, the intelligent thermal management strategy starts the battery heating / cooling in advance, adjusts the battery core temperature to the best temperature interval for charging, and after card swiping and charging, the battery core temperature is suitable for charging, the charging power of the electric vehicle is improved, and the user charging time is greatly shortened.

[0058] Secondly, the plug-in intelligent thermal management strategy also saves the operation of pre-booking heating through APP or vehicle screen before charging in winter, avoids the current common situation of forgetting to start battery heating before charging, effectively improves the effectiveness of battery pre-heating / pre-cooling function, reduces user waiting time, and improves user charging convenience.

[0059] Finally, the energy used for thermal management in the embodiment of the application can come from the battery pack or the charging pile, and only needs to control the opening and closing of the relay. Before charging after plugging in the gun, the vehicle starts the thermal management system in advance, closes the main positive contactor, the main negative contactor and K1 (K2), and adjusts the battery core temperature. At this time, the battery power is used. After the user swipes the card to charge, the fast charging positive contactor and the fast charging negative contactor are closed, and the battery pack starts charging, and the charging pile power is used to adjust the battery core temperature. Therefore, by opening and closing the relay, the battery energy pre-heating or charging pile energy pre-heating can be flexibly controlled, which greatly improves the intelligence of battery thermal management.

[0060] According to the vehicle pre-thermal management method before starting charging according to the embodiment of the application, whether the current vehicle is inserted into the charging gun is judged, the battery power and the battery core temperature are obtained in the case that the current vehicle is inserted into the charging gun, the thermal management strategy is determined according to the battery power and the battery core temperature, and the battery pack is heated or cooled according to the thermal management strategy until the battery power and / or the battery core temperature meet the preset stop condition. Therefore, the problem that the user cannot accurately grasp the pre-heating opportunity and easily forget to start in advance or start in advance but not charge on time, resulting in pre-heating failure and power waste, is solved, a more convenient thermal management scheme is provided for user charging, the charging speed is accelerated, and the user charging experience in winter and summer is improved.

[0061] Secondly, the vehicle pre-thermal management device according to the embodiment of the application is described with reference to the accompanying drawings.

[0062] Figure 5 is a block schematic diagram of the vehicle pre-thermal management device according to the embodiment of the application.

[0063] As Figure 5As shown, the vehicle pre-charging thermal management device 10 comprises a judgment module 100 and a thermal management module 200.

[0064] The judgment module 100 is configured to determine whether the current vehicle is plugged into a charging gun.

[0065] The thermal management module 200 is configured to, in the case that the current vehicle is plugged into the charging gun, acquire a battery power and a battery cell temperature, determine a thermal management strategy according to the battery power and the battery cell temperature, and heat or cool the battery pack according to the thermal management strategy until the battery power and / or the battery cell temperature meets a preset stop condition.

[0066] Optionally, in some embodiments, the thermal management module 200 comprises a first thermal management unit.

[0067] The first thermal management unit is configured to, in the case that the battery power is higher than a first power threshold and the battery cell temperature is lower than a first temperature threshold, heat the battery pack by using a preset PTC heating device until the battery power and / or the battery cell temperature meets the preset stop condition.

[0068] Optionally, in some embodiments, the thermal management module 200 comprises a second thermal management unit.

[0069] The second thermal management unit is configured to, in the case that the battery power is higher than a second power threshold and the battery cell temperature is higher than a second temperature threshold, cool the battery pack by using a preset EAS cooling device until the battery power and / or the battery cell temperature meets the preset stop condition.

[0070] Optionally, in some embodiments, the preset stop condition is that the battery power is lower than a third power threshold or the battery cell temperature is in a preset temperature range.

[0071] Optionally, in some embodiments, after the battery pack is heated or cooled according to the thermal management strategy until the battery power and / or the battery cell temperature meets the preset stop condition, the thermal management module 200 comprises a reminding unit.

[0072] The reminding unit is configured to generate a charging reminding instruction and perform charging reminding based on the charging reminding instruction.

[0073] It should be noted that the foregoing explanation and description of the vehicle pre-charging thermal management method embodiment are also applicable to the vehicle pre-charging thermal management device of this embodiment, which will not be described here again.

[0074] The vehicle pre-starting charging thermal management device provided by the embodiment of the present application can determine whether the current vehicle is inserted into the charging gun, and in the case that the current vehicle is inserted into the charging gun, the battery power and the battery cell temperature are obtained, the thermal management strategy is determined according to the battery power and the battery cell temperature, and the battery pack is heated or cooled according to the thermal management strategy until the battery power and / or the battery cell temperature meet the preset stop condition. Therefore, the user can accurately grasp the pre-heating opportunity, and the problems of forgetting to start pre-heating in advance or not charging in time after starting pre-heating in advance, resulting in pre-heating failure and power waste, are solved, a more convenient thermal management scheme for user charging is provided, the charging speed is accelerated, and the user charging experience in winter and summer is improved.

[0075] Figure 6 The vehicle structure schematic diagram provided by the embodiment of the present application. The vehicle can include:

[0076] The memory 601, the processor 602 and the computer program stored in the memory 601 and executable on the processor 602.

[0077] The processor 602 executes the program to realize the vehicle pre-starting charging thermal management method provided in the above embodiment.

[0078] Further, the vehicle further includes:

[0079] The communication interface 603 is used for communication between the memory 601 and the processor 602.

[0080] The memory 601 is used to store the computer program executable on the processor 602.

[0081] The memory 601 can include a high-speed RAM (Random Access Memory, Random Access Memory) memory, and can also include a non-volatile memory, such as at least one disk memory.

[0082] If the memory 601, the processor 602 and the communication interface 603 are independently implemented, the communication interface 603, the memory 601 and the processor 602 can be connected to each other through a bus and complete the communication between each other. The bus can be an ISA (Industry Standard Architecture, Industry Standard Architecture) bus, a PCI (Peripheral Component, Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture, Extended Industry Standard Architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, Figure 6 Only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0083] Optionally, if the memory 601, the processor 602 and the communication interface 603 are integrated on a chip, the memory 601, the processor 602 and the communication interface 603 can complete the communication among each other through an internal interface.

[0084] The processor 602 can be a CPU (Central Processing Unit, central processor), or an ASIC (Application Specific Integrated Circuit, specific integrated circuit), or one or more integrated circuits configured to implement the embodiments of the present application.

[0085] The embodiments of the present application also provide a computer readable storage medium, which stores a computer program, and the program is executed by a processor to implement the above-mentioned vehicle heat management method before starting charging.

[0086] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0087] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0088] Any process or method descriptions in flow charts or otherwise described herein can be understood as representing code modules, segments, or portions of code that include one or more executable instructions for implementing the specified logic functions (or steps) and / or can be implemented as computer-executable instructions. The preferred embodiments of the present application include additional implementation examples, in which the functions can be performed in other orders, in substantially simultaneous fashion, or in reverse order, depending on the functionality involved, as would be understood by those skilled in the art of the embodiments to which the present application belongs.

[0089] It should be understood that portions of the application can be implemented in hardware, software, firmware, or combinations thereof. In the above embodiments, the N steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As such, if implemented in hardware, and in another embodiment, any of the following technologies, known in the art, or their combinations, can be used to implement: discrete logic circuitry having logic gates for implementing logic functions on data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays, field programmable gate arrays, etc.

[0090] Those skilled in the art of the present technology can understand that all or part of the steps carried out by the above-mentioned embodiment methods can be completed by programs instructing related hardware, and the programs can be stored in a computer readable storage medium. When the program is executed, it includes one of the steps of the method embodiment or a combination thereof.

[0091] Although the embodiments of the present application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

Claims

1. A method of thermal management prior to a vehicle start-up charging, characterized by, The method comprises the following steps: determining whether the current vehicle is inserted into the charging gun; in the case that the current vehicle is inserted into the charging gun, obtaining the battery power and the cell temperature, determining a thermal management strategy according to the battery power and the cell temperature, and heating or cooling the battery pack according to the thermal management strategy until the battery power and / or the cell temperature meet a preset stop condition.

2. The method of claim 1, wherein, The determination of the thermal management strategy according to the battery power and the cell temperature, and the heating or cooling of the battery pack according to the thermal management strategy until the battery power and / or the cell temperature meet the preset stop condition comprise: when the battery power is higher than a first power threshold and the cell temperature is lower than a first temperature threshold, heating the battery pack by using a preset PTC heating device until the battery power and / or the cell temperature meet the preset stop condition.

3. The method of claim 1, wherein, The determination of the thermal management strategy according to the battery power and the cell temperature, and the heating or cooling of the battery pack according to the thermal management strategy until the battery power and / or the cell temperature meet the preset stop condition comprise: when the battery power is higher than a second power threshold and the cell temperature is higher than a second temperature threshold, heating or cooling the battery pack by using a preset EAS cooling device until the battery power and / or the cell temperature meet the preset stop condition.

4. The method of claim 1, wherein, The preset stop condition is that the battery power is lower than a third power threshold or the cell temperature is in a preset temperature range.

5. The method of claim 1, wherein, After the heating or cooling of the battery pack according to the thermal management strategy until the battery power and / or the cell temperature meet the preset stop condition, the method comprises: generating a charging reminder instruction and performing charging reminder based on the charging reminder instruction.

6. A thermal management device before a vehicle start-up charging, characterized by, The method comprises: a determination module configured to determine whether the current vehicle is inserted into the charging gun; a thermal management module configured to, in the case that the current vehicle is inserted into the charging gun, obtain the battery power and the cell temperature, determine a thermal management strategy according to the battery power and the cell temperature, and heat or cool the battery pack according to the thermal management strategy until the battery power and / or the cell temperature meet a preset stop condition.

7. The apparatus of claim 6, wherein, The thermal management module comprises: a first thermal management unit configured to, when the battery power is higher than a first power threshold and the cell temperature is lower than a first temperature threshold, heat the battery pack by using a preset PTC heating device until the battery power and / or the cell temperature meet the preset stop condition.

8. The apparatus of claim 6, wherein, The thermal management module comprises: a second thermal management unit configured to, when the battery power is higher than a second power threshold and the cell temperature is higher than a second temperature threshold, cool the battery pack by using a preset EAS cooling device until the battery power and / or the cell temperature meet the preset stop condition.

9. A vehicle characterized by comprising: The method comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the thermal management method before vehicle starting charging according to any one of claims 1-5.

10. A computer-readable storage medium having stored thereon a computer program, characterized in that, The program is executed by the processor for implementing the heat management method before vehicle starting charging as claimed in any one of claims 1-5.

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