Battery pack heating method, electronic device, computer, charging pile and vehicle

Abstract

The application provides a battery pack heating method, including: obtaining a heating requirement of a battery pack and information of the battery pack; and controlling mutual charging and discharging between the battery pack and an energy storage module according to the heating requirement of the battery pack and the information of the battery pack to heat the battery pack. The application also provides an electronic device, a computer readable storage medium, a computer program product, a charging pile and a vehicle.

Description

Technical Field

[0001] This application relates to the field of charging, and more particularly to a battery pack heating method, electronic equipment, computer-readable storage medium, computer program product, charging pile, and vehicle. Background Technology

[0002] As the electric vehicle market expands, the demand for low-temperature charging in mid-to-high latitude regions is gaining increasing attention. Early low-temperature charging strategies were typically implemented independently by the vehicle itself, such as heating the coolant in the heating system and using a heating film covering the inside of the battery to heat the battery cells, enabling simultaneous charging and heating. However, these technologies, which rely on a single heating film or the battery's own charging and discharging methods, lack flexible design adjustments and cannot adapt to different vehicle models and operating conditions. Summary of the Invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide a battery pack heating method, electronic device, computer-readable storage medium, computer program product, charging pile and vehicle that overcome or at least partially solve the above problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a battery pack heating method is provided, comprising: Obtain the heating requirements and information of the battery pack; The mutual charging and discharging between the battery pack and the energy storage module is controlled according to the heating requirements and information of the battery pack to heat the battery pack.

[0005] Using the above methods, targeted heating strategies can be adopted based on the heating requirements and information of the battery pack, which can meet the heating needs of various vehicle models and operating conditions.

[0006] Furthermore, the energy storage module is connected to the battery pack via several parallel DC-DC modules. The step of controlling the mutual charging and discharging between the battery pack and the energy storage module to heat the battery pack based on the heating requirements and information of the battery pack includes: The number of DC-DC modules turned on is controlled according to the heating requirements of the battery pack.

[0007] Further, the step of controlling the mutual charging and discharging between the battery pack and the energy storage module to heat the battery pack according to the heating requirements and information of the battery pack includes: If the battery pack's charge level is greater than a first preset threshold, the battery pack is controlled to discharge to the energy storage module.

[0008] Further, the step of controlling the mutual charging and discharging between the battery pack and the energy storage module to heat the battery pack according to the heating requirements and information of the battery pack includes: If the battery pack's charge is greater than or equal to a first preset threshold, the system controls the battery pack to discharge to the energy storage module and the energy storage module to discharge to the battery pack alternately.

[0009] Further, the step of controlling the mutual charging and discharging between the battery pack and the energy storage module to heat the battery pack according to the heating requirements and information of the battery pack includes: The battery pack is controlled to discharge to the energy storage module. When the battery pack charge reaches a first preset threshold or the battery pack temperature reaches a second preset threshold, the battery pack discharges to the energy storage module and the energy storage module discharges to the battery pack alternately.

[0010] According to a second aspect of this application, an electronic device is provided, the electronic device including a processor for performing a battery pack heating method as described in the first aspect of this application.

[0011] According to a third aspect of this application, a computer-readable storage medium is provided, wherein computer-executable instructions are stored therein, which, when executed by a processor, are used to implement the battery pack heating method as described in the first aspect of this application.

[0012] According to a fourth aspect of this application, a computer program product is provided, the computer program product comprising a computer program that, when executed by a processor, implements the battery pack heating method as described in the first aspect of this application.

[0013] According to a fifth aspect of this application, a charging pile is provided, comprising one or more of the electronic device described in the second aspect of this application, the computer-readable storage medium described in the third aspect of this application, and the computer program product described in the fourth aspect of this application.

[0014] According to a sixth aspect of this application, a vehicle is provided, including a battery pack adapted to be charged and / or heated via a charging station as described in the fifth aspect of this application.

[0015] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0018] Figure 1 This is a schematic diagram of an embodiment of the battery pack heating method provided in the first aspect of the present invention; Figure 2 This is a schematic diagram of an embodiment of the battery pack heating method provided in the first aspect of the present invention; Figure 3 This is a schematic diagram of an embodiment of the battery pack heating method provided in the first aspect of the present invention; Figure 4 This is a schematic diagram of an embodiment of the battery pack heating method provided in the first aspect of the present invention; Figure 5 This is a schematic diagram of an embodiment of the battery pack heating method provided in the first aspect of the present invention; Figure 6 This is a schematic diagram of an embodiment of the battery pack heating method provided in the third aspect of the present invention.

[0019] Explanation of reference numerals in the attached figures 100. Battery pack; 200. Energy storage module. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0021] According to the first aspect of this application, Figure 1 As shown, a battery pack heating method is provided, including: S101. Obtain the heating requirements and information of the battery pack; S102. Control the mutual charging and discharging between the battery pack and the energy storage module to heat the battery pack according to the heating requirements and information of the battery pack.

[0022] Using the above methods, targeted heating strategies can be adopted based on the heating requirements and information of the battery pack, which can meet the heating needs of various vehicle models and operating conditions.

[0023] In some embodiments, the energy storage module is connected to the battery pack via several parallel DC-DC modules, and controls the mutual charging and discharging between the battery pack and the energy storage module to heat the battery pack according to the heating requirements and information of the battery pack, including: The number of DC-DC modules activated is controlled based on the battery pack's heating requirements. This method allows for control of the maximum current by adjusting the number of activated DC-DC modules. For example, for vehicles with high heating demands, more DC-DC modules can be activated, allowing the vehicle-to-charger heating function to operate at higher power. Conversely, for vehicles with low heating demands, fewer DC-DC modules can be activated, allowing the vehicle-to-charger heating function to operate at lower power, while the remaining DC-DC modules can be used for other functions.

[0024] In some embodiments, such as Figure 2 As shown, the DC-DC modules are divided into multiple groups (≥2), with each group containing multiple (≥2) modules. Each group is assigned a circuit breaker to control the on / off state of that group. The large current released by the energy storage module is evenly distributed to each working DC-DC module. The maximum current is determined by the number of working DC-DC modules and the power limit, while the operating current is determined by the vehicle model strategy.

[0025] In some embodiments, the energy storage module is typically a large battery at the charging station end responsible for storing electrical energy. Its voltage is generally higher than that of the vehicle-side battery pack, allowing it to maintain a high current for charging and discharging. During charging, the energy storage module discharges to the battery pack via a DC-DC converter to reduce its voltage. During heating, the energy storage module and the battery pack mutually charge and discharge each other via the DC-DC converter.

[0026] In some embodiments, such as Figure 3 As shown, the mutual charging and discharging between the battery pack and the energy storage module is controlled according to the heating requirements and information of the battery pack to heat the battery pack, including: If the battery pack's charge exceeds a first preset threshold, the battery pack discharges to the energy storage module. In this manner, current flows from the battery pack to the energy storage module, discharging the battery pack and charging the energy storage module. The discharge current is a constant DC current. The current generates Joule heat through the battery pack's internal resistance; the battery absorbs heat, and its temperature rises. In this mode, the battery pack discharges unilaterally to the energy storage module, requiring sufficient initial charge, and is suitable for medium to high SOC states.

[0027] In some embodiments, such as Figure 4 As shown, the mutual charging and discharging between the battery pack and the energy storage module is controlled according to the heating requirements and information of the battery pack to heat the battery pack, including: If the battery pack's charge level is greater than or equal to a first preset threshold, the system alternates between discharging from the battery pack to the energy storage module and vice versa. In this manner, current flows alternately from the battery pack to the energy storage module and vice versa. The circuit current is a square wave. During repeated charging and discharging, Joule heating is generated through the battery pack's internal resistance, causing the battery to absorb heat and its temperature to rise. In this mode, the battery pack only consumes electricity for heating, making it suitable for low to medium SOC states.

[0028] In some embodiments, such as Figure 5 As shown, the mutual charging and discharging between the battery pack and the energy storage module is controlled according to the heating requirements and information of the battery pack to heat the battery pack, including: The system controls the battery pack to discharge to the energy storage module. When the battery pack charge reaches a first preset threshold or the battery pack temperature reaches a second preset threshold, the system alternates between discharging from the battery pack to the energy storage module and vice versa. Initially, the current flows from the battery pack to the energy storage module, then transitions to an alternating flow. The current is initially constant DC, then converts to a square wave. In this mode, the battery pack first discharges to the energy storage module in a discharge mode. Once the vehicle's state (SOC / temperature, etc.) reaches a preset value, it switches to a pulse mode, mutually charging and discharging with the energy storage module. The timing of this mode transition is determined by the battery pack state and the vehicle model strategy.

[0029] The following will combine Figure 6 The battery pack heating method provided in the first aspect of this application will be illustrated by example with reference to the embodiments: S201, Insert gun; Enter S202; S202. Determine if the battery pack requires heating; if yes, proceed to S203; if no, proceed to S209. S203. Determine if the vehicle supports vehicle-to-pile heating; if yes, proceed to S204; if no, proceed to S206. S204. Determine whether the pile end supports vehicle-to-pile heating; if yes, proceed to S205; if no, proceed to S206. S205, Vehicle model recognition; Enter S207; S206, Perform other heating processes; proceed to S209; S207. Implement the corresponding heating strategy according to the vehicle model; proceed to S208; S208. Determine if the battery pack has reached the preset temperature; if yes, proceed to S209; if no, proceed to S207. S209, Start charging.

[0030] After the charging plug is connected, the charging station and the vehicle will communicate and exchange their basic configuration information. The vehicle will assess its own status (such as battery temperature) to determine if heating is needed. If the preset heating conditions are met, the process will proceed; otherwise, the vehicle will directly switch to regular charging mode. For vehicles that support vehicle-to-charging station heating, the system will further determine whether the charging station has this function based on the received charging station capability information. If the charging station does not support this function, the vehicle will enter another type of heating process. If the charging station confirms that it has vehicle-to-charging station heating capability, the vehicle will send a heating request to it. Upon receiving the request, the charging station will combine information such as vehicle type, current battery status, and ambient temperature to execute the corresponding vehicle-to-charging station heating strategy. Once the battery temperature reaches the set target value, the vehicle-to-charging station heating process ends, and the charging process will start normally.

[0031] According to a second aspect of this application, an electronic device is provided, the electronic device including a processor for performing a battery pack heating method as described in the first aspect of this application.

[0032] According to a third aspect of this application, a computer-readable storage medium is provided, which stores computer-executable instructions that, when executed by a processor, are used to implement the battery pack heating method as described in the first aspect of this application.

[0033] According to a fourth aspect of this application, a computer program product is provided, comprising a computer program that, when executed by a processor, implements the battery pack heating method as described in the first aspect of this application.

[0034] According to a fifth aspect of this application, a charging pile is provided, comprising one or more of the electronic device described in the second aspect of this application, the computer-readable storage medium described in the third aspect of this application, and the computer program product described in the fourth aspect of this application.

[0035] According to a sixth aspect of this application, a vehicle is provided, including a battery pack adapted to be charged and / or heated via a charging station as described in the fifth aspect of this application.

[0036] The various embodiments described in this specification are mainly those that differ from other embodiments. For the same or similar parts between the various embodiments, please refer to each other.

[0037] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0038] Embodiments of the present invention are described with reference to flowchart illustrations and / or block diagrams of methods, computer-readable storage media, and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0039] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0040] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0041] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0042] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0043] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0044] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. In the embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant content of other embodiments. Any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

[0045] The present invention has provided a detailed description of a battery pack heating method, electronic device, computer-readable storage medium, computer program product, charging pile, and vehicle. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for heating a battery pack, characterized in that, include: Obtain the heating requirements and information of the battery pack; The mutual charging and discharging between the battery pack and the energy storage module is controlled according to the heating requirements and information of the battery pack to heat the battery pack.

2. The battery pack heating method according to claim 1, characterized in that, The energy storage module is connected to the battery pack via several parallel DC-DC modules. The step of controlling the mutual charging and discharging between the battery pack and the energy storage module to heat the battery pack, based on the heating requirements and information of the battery pack, includes: The number of DC-DC modules turned on is controlled according to the heating requirements of the battery pack.

3. The battery pack heating method according to claim 1, characterized in that, The step of controlling the mutual charging and discharging between the battery pack and the energy storage module to heat the battery pack according to the heating requirements and information of the battery pack includes: If the battery pack's charge level is greater than a first preset threshold, the battery pack is controlled to discharge to the energy storage module.

4. The battery pack heating method according to claim 1, characterized in that, The step of controlling the mutual charging and discharging between the battery pack and the energy storage module to heat the battery pack according to the heating requirements and information of the battery pack includes: If the battery pack's charge is greater than or equal to a first preset threshold, the system controls the battery pack to discharge to the energy storage module and the energy storage module to discharge to the battery pack alternately.

5. The battery pack heating method according to claim 1, characterized in that, The step of controlling the mutual charging and discharging between the battery pack and the energy storage module to heat the battery pack according to the heating requirements and information of the battery pack includes: The battery pack is controlled to discharge to the energy storage module. When the battery pack charge reaches a first preset threshold or the battery pack temperature reaches a second preset threshold, the battery pack discharges to the energy storage module and the energy storage module discharges to the battery pack alternately.

6. An electronic device, characterized in that, The electronic device includes a processor for performing the battery pack heating method as described in any one of claims 1-5.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the battery pack heating method as described in any one of claims 1-5.

8. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the battery pack heating method as described in any one of claims 1-5.

9. A charging pile, characterized in that, It includes one or more of the electronic device of claim 6, the computer-readable storage medium of claim 7, and the computer program product of claim 8.

10. A vehicle, characterized in that, Includes a battery pack, the battery pack being adapted for charging and / or heating via the charging station of claim 9.

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