Vehicle power battery charging methods and charging stations

Abstract

This application discloses a method for charging a vehicle's power battery and a charging pile. The method includes: establishing a target circuit connection between the charging pile and the power battery of the target vehicle, wherein the target circuit includes a charging circuit and a temperature management circuit; exchanging a first coolant pre-treated to a target temperature in the charging pile with a second coolant in the power battery through the temperature management circuit; and charging the power battery through the charging circuit after the exchange. This application solves the technical problem in related technologies where the charging efficiency of charging piles for vehicle power batteries is slow, failing to meet user needs.

Description

Technical Field

[0001] This application relates to the field of vehicle battery charging technology, and more specifically, to a method for charging a vehicle power battery and a charging pile. Background Technology

[0002] With the rapid development of new energy vehicle technology, electric vehicles have received increasing attention. As one of the core components of electric vehicles, how to charge the power battery quickly and safely to meet users' needs for electric vehicles is a technical problem that urgently needs to be solved.

[0003] Due to limitations in battery technology, the power batteries of electric vehicles are greatly affected by ambient temperature. Whether the temperature is too high or too low, it will lead to a decrease in the charging rate of the battery cells and a smaller charging current, ultimately resulting in a longer charging time for the power battery. Especially under low temperature conditions, the internal chemical reaction of the battery is inhibited, and there may even be a situation where the battery cannot be charged.

[0004] Related technologies have proposed a preheating / precooling scheme for power batteries. This involves detecting the battery temperature before charging; if the temperature is too low, a heating module heats the battery; if the temperature is too high, a cooling module cools the battery before charging. However, this scheme is limited by heating / cooling power, and the entire preheating / cooling process takes a considerable amount of time, resulting in a still long overall charging time. Furthermore, increasing the heating / cooling power, while ensuring safety, requires significant investment in equipment modifications, leading to high costs.

[0005] There is currently no effective solution to the above problems. Summary of the Invention

[0006] This application provides a method for charging a vehicle power battery and a charging pile, which at least solves the technical problem in the related art that the charging pile is slow to charge the vehicle power battery and cannot meet the needs of users.

[0007] According to one aspect of the embodiments of this application, a method for charging a vehicle power battery is provided, comprising: establishing a target circuit connection with the power battery of a target vehicle, wherein the target circuit includes: a charging circuit and a temperature management circuit; exchanging a first coolant pretreated to a target temperature in a charging pile with a second coolant in the power battery through the temperature management circuit; and charging the power battery through the charging circuit after the exchange is completed.

[0008] Optionally, the charging pile includes: a first cooling water tank for storing the first coolant and a second cooling water tank for storing the exchanged second coolant; before establishing a target circuit connection with the power battery of the target vehicle, when the charging pile is turned on, the temperature management module is invoked to heat or cool the first coolant in the first cooling water tank until the temperature of the first coolant reaches the target temperature; thereafter, the temperature management module maintains the temperature of the first coolant at the target temperature.

[0009] Optionally, after establishing a target circuit connection with the power battery of the target vehicle, a communication connection is established with the battery management system corresponding to the power battery; the target charging information of the power battery is obtained through the battery management system, wherein the target charging information includes at least: the amount of power to be charged.

[0010] Optionally, the target charging information also includes: the target volume of coolant exchange; exchanging the first coolant pre-treated to the target temperature in the charging pile with the second coolant in the power battery through a temperature management circuit, including: exchanging the first coolant with the target volume and target temperature in the first cooling water tank with the second coolant with the target volume in the power battery through a temperature management circuit.

[0011] Optionally, the temperature management circuit includes: a first channel and a second channel connecting the first cooling water tank and the power battery, and a third channel connecting the second cooling water tank and the power battery; the temperature management circuit exchanges the first coolant of a target volume and target temperature in the first cooling water tank with the second coolant of a target volume in the power battery, including: opening the first channel and the third channel, and closing the second channel; transferring the first coolant of a target volume and target temperature in the first cooling water tank to the power battery through the first channel, and transferring the second coolant of a target volume in the power battery to the second cooling water tank; closing the third channel and opening the second channel.

[0012] Optionally, the target charging information may also include: target charging voltage, and / or target charging current; charging the power battery through the charging circuit includes: charging the power battery with the amount of electricity corresponding to the amount of electricity to be charged through the charging circuit according to the target charging voltage and / or target charging current.

[0013] Optionally, a fourth channel is provided between the first and second cooling water tanks. After charging is completed, the target circuit with the power battery is disconnected; the second coolant in the second cooling water tank is transferred to the first cooling water tank through the fourth channel.

[0014] According to another aspect of the embodiments of this application, a charging pile is also provided, including: a control module, a charging module, a temperature management module, a first cooling water tank, and a second cooling water tank. The control module is used to, when the charging pile is powered on, invoke the temperature management module to heat or cool the first coolant in the first cooling water tank until the temperature of the first coolant reaches a target temperature. Then, the temperature management module maintains the temperature of the first coolant at the target temperature. When the power battery is charging, the control module establishes a temperature management loop connection between the first and second cooling water tanks and the power battery, and controls the charging module to establish a charging loop connection with the power battery. The first coolant at the target temperature in the first cooling water tank is transferred to the power battery through the temperature management loop, and the second coolant in the power battery is transferred to the second cooling water tank. After the exchange is completed, the control module charges the power battery through the charging loop.

[0015] According to another aspect of the embodiments of this application, a non-volatile storage medium is also provided, the non-volatile storage medium including a stored computer program, wherein the device where the non-volatile storage medium is located executes the above-described vehicle power battery charging method by running the computer program.

[0016] According to another aspect of the embodiments of this application, an electronic device is also provided, the electronic device including: a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the above-described vehicle power battery charging method through the computer program.

[0017] In this embodiment, the charging pile first establishes a target circuit connection with the target vehicle's power battery. This target circuit includes a charging circuit and a temperature management circuit. Then, the first coolant pre-treated to the target temperature in the charging pile is exchanged with the second coolant in the power battery through the temperature management circuit. After the exchange is completed, the power battery is charged through the charging circuit. The charging pile pre-treats its stored coolant to the optimal target temperature for battery charging. When charging the battery, the battery temperature can be quickly reached to the target temperature through coolant exchange. Compared to the electric heating method used in related technologies, this solution can significantly shorten the battery temperature adjustment time, thereby improving charging efficiency and effectively solving the technical problem in related technologies where the charging efficiency of charging piles for vehicle power batteries is slow and fails to meet user needs. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1This is a schematic diagram of an optional charging pile according to an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of an optional charging pile and vehicle charging connection according to an embodiment of this application;

[0021] Figure 3 This is a schematic flowchart of an optional vehicle power battery charging method according to an embodiment of this application. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0023] It should be noted that the terms "first," "second," etc., used in the specification, claims, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] Example 1

[0025] To address the technical problem that charging piles in related technologies have slow charging efficiency for vehicle power batteries, making it difficult to meet user needs, this application improves the existing charging pile structure by introducing a cooling water tank to store coolant and pre-treating the coolant to the target temperature most suitable for battery charging. When charging the battery, the battery temperature can be quickly reached to the target temperature through coolant exchange. Compared with the electric heating method used in related technologies, this can greatly shorten the battery temperature adjustment time, thereby improving charging efficiency.

[0026] Figure 1 This is a schematic diagram of an optional charging pile according to an embodiment of this application, such as... Figure 1As shown, the charging station includes at least: a control module 11, a charging module 12, a temperature management module 13, a first cooling water tank 14, and a second cooling water tank 15, wherein:

[0027] The first coolant tank 14 is used to store the first coolant. Under normal circumstances, the volume of the first coolant tank 14 is larger than the volume of the coolant in a general vehicle power battery. Considering the effect of thermal expansion and contraction, the first coolant tank 14 can generally be filled with 80%-90% of the first coolant to ensure that there is enough first coolant to exchange with the second coolant in the vehicle power battery. The specific volume of the first coolant is adjusted by the staff according to the actual situation and is not specifically limited here.

[0028] The second coolant tank 15 is used to store the second coolant in the swapped vehicle power battery. The volume of the second coolant tank 15 is usually the same as that of the first coolant tank 14, and is also larger than the volume of coolant in a general vehicle power battery. When not charging, the second coolant tank 15 is usually empty.

[0029] The temperature management module 13 typically includes a heating unit and a cooling unit, used to heat or cool the first coolant in the first cooling water tank.

[0030] The charging module 12 is typically a high-voltage DC charging module used to charge the vehicle's power battery.

[0031] The control module 15 is the core management module in the charging pile. When the charging pile is turned on, it calls the temperature management module 13 to heat or cool the first coolant in the first cooling water tank 14 until the temperature of the first coolant reaches the target temperature. Then, the temperature management module 13 maintains the temperature of the first coolant at the target temperature. When the power battery is charging, it controls the first cooling water tank 14 and the second cooling water tank 15 to establish a temperature management loop connection with the power battery, and controls the charging module 12 to establish a charging loop connection with the power battery. Through the temperature management loop, the first coolant at the target temperature in the first cooling water tank 14 is transferred to the power battery, and the second coolant in the power battery is transferred to the second cooling water tank 15. After the exchange is completed, it controls the charging module 12 to charge the power battery through the charging loop.

[0032] The target temperature mentioned above is the temperature suitable for charging the power battery. It is set by the staff based on their experience. One possible way to determine the target temperature is as follows: Since the charging speed of the power battery will change with the battery temperature, the staff can collect relevant charging data, determine the curve of the battery charging speed changing with the battery temperature, and select the battery temperature corresponding to the maximum battery charging speed as the target temperature.

[0033] Figure 2 This is a schematic diagram of an optional charging pile connection between the charging pile and the vehicle during the charging process according to an embodiment of this application. The following is in conjunction with... Figure 2 The specific structure and functions of each module in the charging pile are explained.

[0034] As an optional implementation, when the charging pile is turned on, the control module 15 can call the temperature management module 13 to heat or cool the first coolant in the first cooling water tank until the temperature of the first coolant reaches the target temperature; then, the temperature management module 13 maintains the temperature of the first coolant at the target temperature.

[0035] Specifically, the control module 15 can first detect the current temperature of the first coolant in the first cooling water tank 14, or directly detect the current ambient temperature, which are usually the same; then compare the temperature with the target temperature. If the temperature is lower than the target temperature, the heating unit in the temperature management module 13 is called to heat the first coolant to the target temperature; if the temperature is higher than the target temperature, the cooling unit in the temperature management module 13 is called to cool the first coolant to the target temperature.

[0036] When the target vehicle needs to charge the power battery 21, the control module 11 can control the first coolant tank 14 and the second coolant tank 15 to establish a temperature management loop connection with the power battery 21. The temperature management loop includes: a first channel and a second channel connecting the first coolant tank 14 and the power battery 21, and a third channel connecting the second coolant tank 15 and the power battery 21.

[0037] The second and third channels can be controlled using three-way valves, such as... Figure 2 As shown, g is a three-way valve, channel d forms a second channel through three-way valve g and channel f, channel e forms a third channel through three-way valve g and channel f, channel c is the first channel, and both channel c and channel f are connected to the coolant management interface of power battery 21.

[0038] Optionally, the control module 11 can control the charging module 12 to establish a charging circuit b with the charging interface of the power battery 21; the control module 11 itself establishes a communication circuit a with the battery management system 22 corresponding to the power battery 21. The battery management system 22 can obtain the target charging information of the power battery 21. The target charging information usually includes: the target volume of coolant exchange, battery temperature information, the amount of energy to be charged, the target charging voltage, the target charging current, etc. The target volume is usually the maximum volume of coolant that can be exchanged preset in the power battery.

[0039] Subsequently, the control module 11 can exchange the first coolant with the target volume and target temperature in the first cooling water tank 14 with the second coolant with the target volume in the power battery 21 through the temperature management loop.

[0040] Specifically, the control module 11 can first open the first channel, then open the third channel and close the second channel by adjusting the three-way valve; then, the first coolant with the target volume and target temperature in the first cooling water tank 14 is transferred to the power battery through the first channel, and the second coolant with the target volume in the power battery is transferred to the second cooling water tank 15; after the exchange is completed, the control module 11 closes the third channel and opens the second channel by adjusting the three-way valve. At this time, the coolant in the first cooling water tank 14 and the power battery 21 form an internal circulation. Since the temperature management module 13 will continuously keep the first coolant in the first cooling water tank 14 warm, the internal circulation can keep the coolant temperature in the power battery 21 at the target temperature throughout the charging process, thereby ensuring charging efficiency.

[0041] Optionally, after the coolant exchange is completed, the control module 11 can control the charging module 12 to charge the power battery 21 with the amount of electricity corresponding to the amount of electricity to be charged through the charging circuit according to the target charging voltage and / or target charging current.

[0042] To fully recover the coolant, as an optional implementation, a fourth channel h is provided between the first cooling water tank 14 and the second cooling water tank 15. This fourth channel can be a one-way channel from the second cooling water tank 15 to the first cooling water tank 14. During the charging process, the fourth channel is closed. After charging is completed, the control module 11 can control the first cooling water tank 14 and the second cooling water tank 15 to disconnect the temperature management circuit with the power battery 21, control the charging module 12 to disconnect the charging circuit with the power battery 21, and open the fourth channel to transfer the second coolant in the second cooling water tank 15 to the first cooling water tank 14 through the fourth channel.

[0043] In this embodiment, the charging pile first establishes a target circuit connection with the target vehicle's power battery. This target circuit includes a charging circuit and a temperature management circuit. Then, the first coolant pre-treated to the target temperature in the charging pile is exchanged with the second coolant in the power battery through the temperature management circuit. After the exchange is completed, the power battery is charged through the charging circuit. The charging pile pre-treats its stored coolant to the optimal target temperature for battery charging. When charging the battery, the battery temperature can be quickly reached to the target temperature through coolant exchange. Compared to the electric heating method used in related technologies, this solution can significantly shorten the battery temperature adjustment time, thereby improving charging efficiency and effectively solving the technical problem in related technologies where the charging efficiency of charging piles for vehicle power batteries is slow and fails to meet user needs.

[0044] Example 2

[0045] Based on the operation of the charging pile provided in Embodiment 1, this application provides a method for charging a vehicle power battery. It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowcharts, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0046] Figure 3 This is a schematic flowchart of an optional vehicle power battery charging method according to an embodiment of this application, as shown below. Figure 3 As shown, the method includes at least steps S302-S306, wherein:

[0047] Step S302: Establish a target circuit connection with the power battery of the target vehicle, wherein the target circuit includes a charging circuit and a temperature management circuit.

[0048] Step S304: The first coolant pre-treated to the target temperature in the charging pile is exchanged with the second coolant in the power battery through the temperature management circuit.

[0049] Step S306: After the exchange is completed, the power battery is charged through the charging circuit.

[0050] The following describes the vehicle power battery charging process of this application scheme with specific implementation steps.

[0051] As an optional implementation, when the charging pile is turned on, the temperature management module can be invoked to heat or cool the first coolant in the first cooling water tank until the temperature of the first coolant reaches the target temperature; thereafter, the temperature management module maintains the temperature of the first coolant at the target temperature.

[0052] Specifically, the current temperature of the first coolant in the first cooling water tank can be detected first, or the current ambient temperature can be detected directly, as the two are usually the same; then the temperature is compared with the target temperature. If the temperature is lower than the target temperature, the heating unit in the temperature management module is called to heat the first coolant to the target temperature; if the temperature is higher than the target temperature, the cooling unit in the temperature management module is called to cool the first coolant to the target temperature.

[0053] When charging the power battery, a temperature management loop can be established between the power battery and the first and second cooling water tanks. This temperature management loop includes a first channel connecting the first cooling water tank to the power battery, a second channel connecting the first cooling water tank to the power battery, and a third channel connecting the second cooling water tank to the power battery. The second and third channels can be controlled using a three-way valve. All three channels are connected to the power battery's coolant management interface. A charging loop is established between the charging module and the power battery's charging interface. A communication connection is established between the control module and the corresponding battery management system of the power battery. The battery management system can obtain the power battery's target charging information, which typically includes: the target volume of coolant exchange, battery temperature information, amount of charge to be generated, target charging voltage, and target charging current. The target volume is usually the maximum volume of coolant that can be exchanged pre-set for the power battery.

[0054] Subsequently, the first coolant with the target volume and target temperature in the first cooling water tank can be exchanged with the second coolant with the target volume in the power battery through the temperature management circuit.

[0055] Specifically, the first channel can be opened first, and the third channel can be opened and the second channel closed by adjusting the three-way valve. Then, the first coolant with the target volume and target temperature in the first cooling water tank can be transferred to the power battery through the first channel, and the second coolant with the target volume in the power battery can be transferred to the second cooling water tank. After the exchange is completed, the third channel can be closed and the second channel can be opened by adjusting the three-way valve. At this time, the coolant in the first cooling water tank and the power battery form an internal circulation. Since the temperature management module will continuously keep the first coolant in the first cooling water tank warm, the internal circulation can keep the coolant temperature in the power battery at the target temperature throughout the charging process, thereby ensuring charging efficiency.

[0056] Optionally, after the coolant exchange is completed, the charging module can be controlled to charge the power battery with the amount of electricity corresponding to the amount of electricity to be charged through the charging circuit according to the target charging voltage and / or target charging current.

[0057] To fully recover the coolant, as an optional implementation, a fourth channel is provided between the first and second cooling water tanks. This fourth channel can be a one-way channel connecting the second cooling water tank to the first cooling water tank. During charging, the fourth channel is closed. After charging is completed, the target circuit with the power battery can be disconnected, that is, the temperature management circuit between the first and second cooling water tanks and the power battery is disconnected, and the charging module is disconnected from the charging circuit with the power battery. Then, the fourth channel is opened to transfer the second coolant in the second cooling water tank to the first cooling water tank.

[0058] In this embodiment, the charging pile first establishes a target circuit connection with the target vehicle's power battery. This target circuit includes a charging circuit and a temperature management circuit. Then, the first coolant pre-treated to the target temperature in the charging pile is exchanged with the second coolant in the power battery through the temperature management circuit. After the exchange is completed, the power battery is charged through the charging circuit. The charging pile pre-treats its stored coolant to the optimal target temperature for battery charging. When charging the battery, the battery temperature can be quickly reached to the target temperature through coolant exchange. Compared to the electric heating method used in related technologies, this solution can significantly shorten the battery temperature adjustment time, thereby improving charging efficiency and effectively solving the technical problem in related technologies where the charging efficiency of charging piles for vehicle power batteries is slow and fails to meet user needs.

[0059] Example 3

[0060] According to an embodiment of this application, a non-volatile storage medium is also provided, which includes a stored computer program, wherein the device containing the non-volatile storage medium executes the vehicle power battery charging method in Embodiment 2 by running the computer program.

[0061] Specifically, the device containing the non-volatile storage medium executes the following steps by running the computer program: establishing a target circuit connection with the power battery of the target vehicle, wherein the target circuit includes a charging circuit and a temperature management circuit; exchanging the first coolant pre-treated to the target temperature in the charging pile with the second coolant in the power battery through the temperature management circuit; after the exchange is completed, charging the power battery through the charging circuit.

[0062] According to an embodiment of this application, a processor is also provided for running a computer program, wherein the computer program executes the vehicle power battery charging method of embodiment 2 when running.

[0063] Specifically, when the computer program runs, it executes the following steps: establishing a target circuit connection with the power battery of the target vehicle, wherein the target circuit includes a charging circuit and a temperature management circuit; exchanging the first coolant pre-treated to the target temperature in the charging pile with the second coolant in the power battery through the temperature management circuit; after the exchange is completed, charging the power battery through the charging circuit.

[0064] According to an embodiment of this application, an electronic device is also provided, comprising: a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the vehicle power battery charging method of Embodiment 2 through the computer program.

[0065] Specifically, the processor is configured to execute the following steps via a computer program: establish a target circuit connection with the power battery of the target vehicle, wherein the target circuit includes a charging circuit and a temperature management circuit; exchange the first coolant pre-treated to the target temperature in the charging pile with the second coolant in the power battery through the temperature management circuit; after the exchange is completed, charge the power battery through the charging circuit.

[0066] The sequence numbers of the above embodiments are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0067] In the above 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 descriptions of other embodiments.

[0068] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between units or modules may be electrical or other forms.

[0069] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0070] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0071] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0072] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for charging a vehicle power battery, applied to a charging pile, characterized in that, The charging pile includes: a first cooling water tank for storing a first coolant and a second cooling water tank for storing a second coolant after exchange, including: A target circuit connection is established with the power battery of the target vehicle, wherein the target circuit includes a charging circuit and a temperature management circuit, and the temperature management circuit includes a first channel and a second channel connecting the first cooling water tank and the power battery, and a third channel connecting the second cooling water tank and the power battery; Open the first channel and the third channel, and close the second channel; The first coolant, pre-treated to the target temperature, is transferred from the first cooling water tank to the power battery through the first channel, and the second coolant, with the target volume in the power battery, is transferred to the second cooling water tank. The target volume represents the volume of the second coolant. The third channel is closed, the second channel is opened, and the first cooling water tank and the coolant in the power battery are controlled to form an internal circulation. The internal circulation is used to maintain the temperature of the coolant in the power battery at the target temperature during the charging process. After the exchange is completed, the power battery is charged through the charging circuit.

2. The method according to claim 1, characterized in that, Before establishing a target circuit connection with the target vehicle's power battery, the method further includes: When the charging pile is powered on, the temperature management module is invoked to heat or cool the first coolant in the first cooling water tank until the temperature of the first coolant reaches the target temperature; thereafter, the temperature management module maintains the temperature of the first coolant at the target temperature.

3. The method according to claim 2, characterized in that, After establishing a target circuit connection with the target vehicle's power battery, the method further includes: Establish a communication connection with the battery management system corresponding to the power battery; The target charging information of the power battery is obtained through the battery management system, wherein the target charging information includes at least: the amount of power to be charged.

4. The method according to claim 3, characterized in that, The target charging information also includes: target charging voltage, and / or, target charging current; charging the power battery through the charging circuit includes: Based on the target charging voltage and / or the target charging current, the power battery is charged with the amount of electricity corresponding to the amount of electricity to be charged through the charging circuit.

5. The method according to claim 1, characterized in that, A fourth channel is provided between the first cooling water tank and the second cooling water tank, and the method further includes: Once charging is complete, disconnect the target circuit from the power battery; The second coolant in the second cooling water tank is transferred to the first cooling water tank through the fourth channel.

6. A charging pile, characterized in that, include: The system includes a control module, a charging module, a temperature management module, a first cooling water tank, and a second cooling water tank. The control module is used to call the temperature management module to heat or cool the first coolant in the first cooling water tank when the charging pile is turned on, until the temperature of the first coolant reaches the target temperature. Then, the temperature management module maintains the temperature of the first coolant at the target temperature. When the power battery is charging, the control module controls the first cooling water tank and the second cooling water tank to establish a temperature management loop connection with the power battery, and controls the charging module to establish a charging loop connection with the power battery. The first coolant at the target temperature in the first cooling water tank is transferred to the power battery through the temperature management loop, and the second coolant in the power battery is transferred to the second cooling water tank. The control module controls the coolant in the first cooling water tank and the power battery to form an internal circulation, wherein the internal circulation is used to maintain the temperature of the coolant in the power battery at the target temperature during the charging process. After the exchange is completed, the control module controls the charging module to charge the power battery through the charging loop.

7. A non-volatile storage medium, characterized in that, The non-volatile storage medium includes a stored computer program, wherein the device containing the non-volatile storage medium executes the vehicle power battery charging method according to any one of claims 1 to 5 by running the computer program.

8. An electronic device, characterized in that, include: A memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the vehicle power battery charging method according to any one of claims 1 to 5 through the computer program.

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