A battery charging and heating control method, system, terminal device and storage medium

Abstract

The application provides a battery charging and heating control method, a system, a terminal device and a storage medium. The method comprises the following steps: when a charging connection signal is received, the temperature of the battery before charging is obtained; when the temperature before charging is less than or equal to a first temperature threshold, the first ambient temperature value and the rated capacity of the battery pack are obtained; according to the first ambient temperature value and the rated capacity of the battery pack, the first preset heating power is determined, and the external power supply is controlled to heat the battery at the first preset heating power. In the charging process of the vehicle, when it is determined that the battery needs to be heated, the battery is heated at a specific heating power according to the obtained ambient temperature value and the rated capacity of the battery pack, so that the service life of the battery is prolonged.

Description

Technical Field

[0001] This application relates to the field of battery heating technology, specifically to a battery charging heating control method, system, terminal device, and storage medium. Background Technology

[0002] Pure electric vehicles are gaining popularity among users due to their superior power, drivability, NVH (Noise, Vibration, and Harshness) performance, and lower operating costs.

[0003] However, pure electric vehicles still suffer from high energy consumption and short driving range in low-temperature environments. For example, patent CN202110454149.7 discloses a battery charging method, device, terminal, and computer-readable storage medium. This patent discloses heating the battery based on the battery temperature, ambient temperature, and current battery charge. This control method does not take into account the rated capacity of the battery pack when heating the battery. Heating the battery under these conditions will cause the battery pack to operate at a lower capacity, thereby reducing the battery pack's lifespan. The rated capacity of the battery pack determines the charging speed. Heating the battery pack without considering its rated capacity will slow down the charging speed, reduce charging efficiency, and further affect the vehicle's driving range. Summary of the Invention

[0004] The purpose of this application is to address the above-mentioned problems by providing a battery charging heating control method, system, terminal device, and storage medium.

[0005] In a first aspect, this application provides a battery charging heating control method, the method comprising:

[0006] Upon receiving a charging connection signal, the battery's pre-charging temperature is obtained;

[0007] When it is determined that the pre-charging temperature is less than or equal to the first temperature threshold, the first ambient temperature value and the rated capacity of the battery pack are obtained.

[0008] Based on the first ambient temperature value and the rated capacity of the battery pack, a first preset heating power is determined, and an external power supply is controlled to heat the battery at the first preset heating power.

[0009] According to the technical solution provided in the embodiments of this application, determining the first preset heating power based on the first ambient temperature value and the rated capacity of the battery pack includes:

[0010] The heating power table is traversed to obtain the first preset heating power corresponding to the first ambient temperature value and the rated capacity of the battery pack; the heating power table includes: multiple sets of ambient temperature value ranges, battery pack rated capacity ranges, and the first preset heating power corresponding to each of the ambient temperature value ranges and the rated capacity ranges of the battery pack.

[0011] According to the technical solution provided in the embodiments of this application, after heating the battery with the first preset heating power, the method further includes:

[0012] Get the battery's first real-time temperature;

[0013] When the first real-time temperature is determined to be greater than the second temperature threshold, heating of the battery is stopped and charging of the battery is started, wherein the second temperature threshold is greater than the first temperature threshold.

[0014] According to the technical solution provided in the embodiments of this application, after determining that the first real-time temperature is greater than the second temperature threshold, stopping the heating of the battery and starting the charging of the battery, the method further includes:

[0015] When the current battery level reaches the first charge level, obtain the battery's second temperature.

[0016] When the second temperature is determined to be less than or equal to the third temperature threshold, the second ambient temperature value is obtained; the third temperature threshold is greater than the second temperature threshold.

[0017] Based on the second ambient temperature value and the rated capacity of the battery pack, the heating power table is iterated to obtain the second preset heating power, and the battery is heated with the second preset heating power.

[0018] According to the technical solution provided in the embodiments of this application, after receiving the charging connection signal and before determining that the pre-charging temperature is less than or equal to the first temperature threshold, the method further includes:

[0019] The charging mode of the battery is obtained based on the charging connection signal; the charging mode includes DC charging mode and AC charging mode.

[0020] The first temperature threshold is determined based on the charging mode.

[0021] According to the technical solution provided in the embodiments of this application, after the step of acquiring the first real-time temperature of the battery and before the step of determining that the first real-time temperature is greater than the second temperature threshold, the following steps are included:

[0022] The charging mode of the battery is obtained based on the charging connection signal; the charging mode includes DC charging mode and AC charging mode.

[0023] The second temperature threshold is determined based on the charging mode.

[0024] According to the technical solution provided in the embodiments of this application, the first temperature threshold corresponding to the DC charging mode is greater than the first temperature threshold corresponding to the AC charging mode.

[0025] Secondly, this application provides a battery charging heating control system, comprising:

[0026] A first acquisition module is configured to acquire the battery's pre-charging temperature upon receiving a charging connection signal.

[0027] The second acquisition module is configured to acquire the first ambient temperature value and the rated capacity of the battery pack when the pre-charging temperature is less than or equal to the first temperature threshold.

[0028] The first determining module is configured to determine a first preset heating power based on the first ambient temperature value and the rated capacity of the battery pack, and control an external power supply to heat the battery at the first preset heating power.

[0029] Thirdly, this application provides a terminal device, the terminal device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor;

[0030] When the computer program is executed by the processor, it implements the steps of the battery charging heating control method as described in any of the preceding claims.

[0031] Fourthly, this application provides a computer-readable storage medium storing a battery charging and heating control program, which, when executed by a processor, implements the steps of the battery charging and heating control method as described in any of the preceding claims.

[0032] Compared with the prior art, the beneficial effects of this application are as follows: This application receives a charging connection signal, obtains the battery temperature before charging, and when it is determined that the battery temperature before charging is less than or equal to a first temperature threshold, obtains a first ambient temperature value and the rated capacity of the battery pack, obtains a first preset heating power, and heats the battery with the first preset heating power; during use, after receiving the charging connection signal, it obtains and judges the battery temperature before charging. When it is determined that the battery temperature before charging is less than or equal to the first temperature threshold, it indicates that the battery needs to be heated. Then, it obtains the first ambient temperature value and the rated capacity of the battery pack, determines the first preset heating power based on the first ambient temperature value and the rated capacity of the battery pack, and controls the external power supply to heat the battery with the first preset heating power.

[0033] This application, during vehicle charging, receives a charging connection signal and acquires the battery's pre-charging temperature. When the pre-charging temperature is determined to be less than or equal to a first temperature threshold, it indicates that the battery needs to be heated. Then, it acquires a first ambient temperature value and the battery pack's rated capacity. Based on these values, it determines a first preset heating power for heating the battery and controls an external power source to heat the battery at this preset power. This application considers the battery pack's rated capacity, which firstly ensures that the battery pack can operate at its rated capacity during heating, thereby extending its lifespan; secondly, considering the battery pack's rated capacity, heating the battery pack does not affect its charging speed, thus improving battery lifespan. The charging rate can further improve the vehicle's range; thirdly, heating the battery while considering its rated capacity can prevent overheating, thereby extending its lifespan and safety; furthermore, because this application takes into account the rated capacity of the battery pack, it can determine different heating powers for the battery heating process based on a comprehensive consideration of multiple factors. Specifically, different heating powers are set according to the rated capacity of the battery pack and the ambient temperature, ensuring that the battery has corresponding heating power under different ambient temperatures and different rated capacities of the battery pack. In addition, this application uses an external power source, such as the power from a charging station, when heating the battery, which does not consume the battery's own power, thus avoiding a reduction in battery lifespan and indirectly increasing the battery's range. Attached Figure Description

[0034] Figure 1 This is a flowchart of a battery charging heating control method provided in Embodiment 1 of this application;

[0035] Figure 2 This is a diagram of a battery charging and heating control system provided in Embodiment 2 of this application;

[0036] Figure 3 This is a schematic diagram of the server structure provided in Embodiment 5 of this application.

[0037] The text labels in the figure represent: 1. First acquisition module; 2. Second acquisition module; 3. First determination module; 400. Server; 401. Central processing unit (CPU); 402. Read-only memory (ROM); 403. Random access memory (RAM); 404. Bus; 405. Input / output (I / O) interface; 406. Input section; 407. Output section; 408. Storage section; 409. Communication section; 410. Driver; 411. Removable medium. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solution of this application, the application will be described in detail below with reference to the accompanying drawings. The description in this section is only exemplary and explanatory, and should not be used to limit the scope of protection of this application.

[0039] To ensure clarity and conciseness in the description of the following embodiments, a brief introduction to the related technologies is given first:

[0040] VCU stands for Vehicle Control Unit.

[0041] A+ / CC2 refers to the signal of the AC charging gun, which is used to communicate with the vehicle. When the A+ / CC2 signal is high, it indicates that the vehicle needs to be AC ​​charged.

[0042] CC / CP refers to the signal of the DC charging gun, which is also used to communicate with the vehicle. When the CC / CP signal is high, it indicates that the vehicle needs DC charging.

[0043] PTC Thermal Management System: The PTC (Positive Temperature Coefficient) thermal management system is a type of automotive thermal management system used to control the temperature of the battery to ensure that the battery can operate safely and efficiently during charging.

[0044] The vehicle's VCU detects the level status of the A+ / CC2 and CC / CP signals and sends the detected level status to the charging equipment. After receiving the level status, the charging equipment can determine the charging method required by the vehicle and provide the corresponding charging service.

[0045] Example 1

[0046] This application provides a battery charging heating control method, the method as follows: Figure 1 As shown, the specific values ​​involved in the following embodiments are for illustrative purposes only and do not constitute any specific limitation:

[0047] S1. Upon receiving a charging connection signal, obtain the battery's temperature before charging;

[0048] S2. When it is determined that the pre-charging temperature is less than or equal to the first temperature threshold, the first ambient temperature value and the rated capacity of the battery pack are obtained.

[0049] S3. Based on the first ambient temperature value and the rated capacity of the battery pack, determine the first preset heating power, and control the external power supply to heat the battery with the first preset heating power.

[0050] Specifically, in this embodiment, after the vehicle is connected to the charging gun and a charging connection signal is received, the battery's pre-charging temperature is obtained. When it is determined that the battery's pre-charging temperature is less than or equal to a first temperature threshold, the first ambient temperature value and the battery pack's rated capacity are obtained. Then, based on the first ambient temperature value and the battery pack's rated capacity, a first preset heating power is determined, and the external power supply, i.e., the charging pile, is controlled to heat the battery with the first preset heating power.

[0051] Furthermore, determining the first preset heating power based on the first ambient temperature value and the rated capacity of the battery pack includes:

[0052] The heating power table is traversed to obtain the first preset heating power corresponding to the first ambient temperature value and the rated capacity of the battery pack; the heating power table includes: multiple sets of ambient temperature value ranges, battery pack rated capacity ranges, and the first preset heating power corresponding to each of the ambient temperature value ranges and the rated capacity ranges of the battery pack.

[0053] Specifically, in this embodiment, determining the first preset heating power based on the first ambient temperature value and the rated capacity of the battery pack includes:

[0054] The heating power table is traversed to find the first preset heating power corresponding to the first ambient temperature value and the rated capacity of the battery pack. Before each vehicle power-off, the average ambient temperature of the day is saved to the ambient temperature database, as shown in Table 1.

[0055] Table 1: Ambient Temperature Database

[0056] time Average ambient temperature April 19 -5 April 18 -8 April 17 -10 April 16 -15 April 15 -12 ...... ......

[0057] In this embodiment, the average ambient temperature of the past five days is obtained. Then, based on the information in Table 1, the first ambient temperature value is calculated as (-5-8-10-15-12) / 5 = -10 degrees Celsius, which is the average of the five-day average ambient temperature. Next, the rated capacity of the battery pack is obtained. Assuming the rated capacity of the currently charging battery pack is 45kWh, after obtaining the first ambient temperature value and the rated capacity of the battery pack, the heating power table needs to be iterated through. The heating power table is shown in Table 2 below.

[0058] Table 2: Heating Power (kW)

[0059]

[0060] The heating power table includes multiple sets of ambient temperature ranges and battery pack rated capacity ranges, as well as a first preset heating power corresponding to each ambient temperature range and battery pack rated capacity range. That is, different first ambient temperatures and different battery pack rated capacities correspond to different first preset heating powers. Based on the first ambient temperature value (-10 degrees Celsius) and the battery pack rated capacity (45kWh), the heating power table shows a corresponding first heating power of 1.7kW. Therefore, the battery is heated using the first preset heating power of 1.7kW. The first preset power varies depending on the battery pack rated capacity and the first ambient temperature, ensuring that different heating powers correspond to different battery pack rated capacities and different ambient temperatures. This avoids damage to the battery's lifespan due to excessive or insufficient heating power. Furthermore, when heating the battery, the power source is the external charging station, not the battery's own power, which also helps to avoid damaging the battery's lifespan.

[0061] Furthermore, after heating the battery with the first preset heating power, the process further includes:

[0062] Get the battery's first real-time temperature;

[0063] When the first real-time temperature is determined to be greater than the second temperature threshold, heating of the battery is stopped and charging of the battery is started, wherein the second temperature threshold is greater than the first temperature threshold.

[0064] Specifically, in this embodiment, after heating the battery with the first heating power, the method further includes: obtaining the first real-time temperature of the battery in real time, determining that when the first real-time temperature is greater than a second temperature threshold, stopping the heating of the battery and starting the charging of the battery, wherein the second temperature threshold is greater than the first temperature threshold.

[0065] Furthermore, after determining that the first real-time temperature is greater than the second temperature threshold, stopping battery heating and starting battery charging further includes:

[0066] When the current battery level reaches the first charge level, obtain the battery's first temperature.

[0067] When the first temperature is determined to be less than or equal to the third temperature threshold, the second ambient temperature value is obtained; the third temperature threshold is greater than the second temperature threshold.

[0068] Based on the second ambient temperature value and the rated capacity of the battery pack, the heating power table is iterated to obtain the second preset heating power, and the battery is heated with the second preset heating power.

[0069] Specifically, in this embodiment, after starting to charge the battery, the process further includes:

[0070] In this embodiment, when the battery charge reaches a first level, the battery's first temperature is obtained when the battery charge is 100%. When the first temperature is determined to be less than or equal to a third temperature threshold, the second ambient temperature value is obtained. The method for obtaining and calculating the second ambient temperature value is the same as the method for calculating the first ambient temperature value. The heating power table is traversed to find a second preset heating power corresponding to the second ambient temperature value and the current rated capacity of the battery pack. The PTC thermal management system is then controlled to heat the battery using the second preset heating power via an external charging pile. During the heating process, the battery temperature is obtained in real time until the battery temperature is determined to be greater than the third temperature threshold, at which point the heating of the battery is stopped. In this embodiment, the third temperature threshold is the same in both DC charging mode and AC charging mode, which is 25 degrees Celsius.

[0071] Furthermore, after receiving the charging connection signal and before determining that the pre-charging temperature is less than or equal to the first temperature threshold, the process further includes:

[0072] The charging mode of the battery is obtained based on the charging connection signal; the charging mode includes DC charging mode and AC charging mode.

[0073] The first temperature threshold is determined based on the charging mode.

[0074] Furthermore, the first temperature threshold corresponding to the DC charging mode is greater than the first temperature threshold corresponding to the AC charging mode.

[0075] Specifically, in this embodiment, after the vehicle is connected to the charging gun, when the vehicle's VCU receives the charging connection signal, it determines the battery's charging mode based on the received signal. The charging mode includes DC charging mode and AC charging mode. The charging connection signal includes A+ / CC2 signal and CC / CP signal. When the vehicle's VCU detects A+ / CC2, it indicates that the vehicle's charging mode is AC charging mode; when the vehicle's VCU detects CC / CP signal, it indicates that the vehicle's charging mode is DC charging mode. The real-time first temperature threshold is determined based on the different charging modes. The first temperature threshold in the DC charging mode is greater than the first temperature threshold in the AC charging mode, partly because the first temperature threshold in the DC charging mode is smaller than the first temperature threshold in the AC charging mode. In DC charging mode, the chemical reactions inside the battery are more stable, which helps reduce heat accumulation and overheating, thus extending the battery's lifespan. On the other hand, the battery's temperature rise rate is faster in DC charging mode than in AC charging mode; therefore, heating the battery at a higher first temperature threshold will accelerate its aging process. Furthermore, in DC charging mode, the increased battery temperature leads to accelerated internal chemical reactions and changes in the battery's electrochemical performance, affecting its lifespan and safety. In contrast, in AC charging mode, the internal chemical reactions do not accelerate with increasing temperature, and the battery's electrochemical performance remains unaffected. In this embodiment, the first temperature threshold in DC mode is 5 degrees Celsius, and the first temperature threshold in AC mode is -5 degrees Celsius.

[0076] Once the first temperature threshold is determined and the vehicle's VCU has acquired the battery temperature before charging, in DC charging mode, when the vehicle's VCU determines that the battery temperature is less than or equal to the first temperature threshold (5 degrees Celsius), it iterates through Table 1 to obtain the first ambient temperature value, and then iterates through Table 2 to obtain the first preset heating power based on the first ambient temperature value and the battery pack's rated capacity. In AC charging mode, when the vehicle's VCU determines that the battery temperature is less than or equal to the first temperature threshold (-5 degrees Celsius), it iterates through Table 1 to obtain the first ambient temperature value, and then iterates through Table 2 to obtain the first preset heating power based on the first ambient temperature value and the battery pack's rated capacity. In this embodiment, the first ambient temperature value is the same for both DC charging mode and AC charging mode, which is 10 degrees Celsius. After determining the first preset heating power, the vehicle's internal PTC thermal management system is controlled to acquire power from the external charging pile, and simultaneously heats the battery with the first preset heating power.

[0077] Furthermore, after the step of acquiring the first real-time temperature of the battery and before the step of determining that the first real-time temperature is greater than the second temperature threshold, the following steps are included:

[0078] The charging mode of the battery is obtained based on the charging connection signal; the charging mode includes DC charging mode and AC charging mode.

[0079] The second temperature threshold is determined based on the charging mode.

[0080] Specifically, in this embodiment, the second temperature threshold needs to be determined according to the charging mode. In this embodiment, the second temperature threshold under the DC charging mode is 10 degrees Celsius, and the second temperature threshold under the AC charging mode is 0 degrees Celsius. This is because the temperature rise rate of the battery under the DC charging mode is less than that under the AC charging mode, so the second temperature threshold under the DC charging mode is greater than that under the AC charging mode.

[0081] During battery charging, if it is in DC charging mode, heating the battery will stop when the first real-time temperature is found to be greater than 10 degrees Celsius. This is because the battery temperature rise rate is relatively small during DC charging, and the battery itself will also generate some heat. During the charging process, the battery will convert electrical energy into chemical energy for storage, which will cause the battery temperature to rise. In other words, when the first real-time temperature of the battery is found to be greater than 10 degrees Celsius, heating the battery will stop, and then the battery will be charged. During the charging process, the battery temperature will gradually increase. After the battery is fully charged, the battery temperature may exceed the second temperature threshold.

[0082] In AC charging mode, heating the battery is stopped when the first real-time temperature is detected to be greater than 0 degrees Celsius. This is because the battery itself generates heat during AC charging, and the rate of temperature rise during charging is greater than that in DC charging mode. The battery converts electrical energy into chemical energy for storage, which in turn raises its temperature. In other words, when the first real-time temperature is detected to be greater than 0 degrees Celsius, heating the battery is stopped, and charging begins. During charging, the battery temperature gradually increases, and after the battery is fully charged, its temperature may exceed the second temperature threshold.

[0083] In this embodiment, when it is determined that the battery needs to be heated, the battery will be heated with a specific power by consuming external power (the power of the charging pile), instead of consuming the battery's internal power. Furthermore, after the battery charging is completed, the battery temperature will be checked in reverse. If the battery temperature has not reached the third temperature threshold, the battery will still be heated using the power of the charging pile. By using external power and a specific heating power, the battery's lifespan can be extended, which indirectly avoids reducing the battery's driving range and reduces the overall vehicle energy consumption.

[0084] Example 2

[0085] This application provides a battery charging heating control system, such as... Figure 2 As shown, it includes:

[0086] A first acquisition module is configured to acquire the battery's pre-charging temperature upon receiving a charging connection signal.

[0087] The second acquisition module is configured to acquire the first ambient temperature value and the rated capacity of the battery pack when the pre-charging temperature is less than or equal to the first temperature threshold.

[0088] The first determining module is configured to determine a first preset heating power based on the first ambient temperature value and the rated capacity of the battery pack, and control an external power supply to heat the battery at the first preset heating power.

[0089] Specifically, in this embodiment, such as Figure 2 As shown, the battery charging and heating control system includes a first acquisition module 1, configured to acquire the battery's pre-charging temperature upon receiving a charging connection signal; the first acquisition module 1 is connected to a second acquisition module 2, configured to acquire a first ambient temperature value and the battery pack's rated capacity when the pre-charging temperature is less than or equal to a first temperature threshold; the second acquisition module 2 is connected to a first determination module 3, configured to determine a first preset heating power based on the first ambient temperature value and the battery pack's rated capacity, and control an external power supply to heat the battery with the first preset heating power.

[0090] Example 3

[0091] This embodiment provides a battery charging heating control device, which includes:

[0092] A memory, a processor, and a computer program stored in the memory and executable on the processor;

[0093] When the computer program is executed by the processor, it implements as follows: Figure 1 The steps of the battery charging heating control method.

[0094] Example 4

[0095] This embodiment provides a computer-readable storage medium storing a battery charging and heating control program. When executed by a processor, the battery charging and heating control program implements the following... Figure 1 The steps of the battery charging heating control method.

[0096] Example 5

[0097] This embodiment provides a server 400, such as Figure 3 As shown, the server 400 includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes based on programs stored in read-only memory (ROM) 402 or programs loaded from storage into random access memory (RAM) 403. RAM 403 also stores various programs and data required for system operation. CPU 401, ROM 402, and RAM 403 are interconnected via bus 404. Input / output (I / O) interface 405 is also connected to bus 404.

[0098] The following components are connected to I / O interface 405: an input section 406 including a keyboard, mouse, etc.; an output section 407 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 408 including a hard disk, etc.; and a communication section 409 including a network interface card such as a LAN card, modem, etc. The communication section 409 performs communication processing via a network such as the Internet. A drive is also connected to I / O interface 405 as needed. A removable medium 411, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on drive 410 as needed so that computer programs read from it can be installed into storage section 408 as needed.

[0099] In particular, according to embodiments of the present invention, the above references Figure 1 The described process can be implemented as a computer software program. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a computer-readable medium, the computer program including methods for executing... Figure 1 and Figure 2 The program code for the method shown. In such an embodiment, the computer program can be downloaded and installed from a network via communication section 409, and / or installed from removable media 411.

[0100] It should be noted that the computer-readable medium shown in this invention can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this invention, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0101] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0102] The units described in the embodiments of the present invention can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself. The described units or modules can also be located in a processor; for example, a processor can be described as including a first generation module, an acquisition module, a search module, a second generation module, and a merging module. The names of these units or modules do not necessarily limit the specific unit or module itself; for example, the acquisition module can also be described as "an acquisition module for acquiring multiple instances to be probed in the base table".

[0103] On the other hand, this application also provides a computer-readable medium, which may be included in the server described in the above embodiments; or it may exist independently and not assembled into the electronic device. The computer-readable medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to implement the smart device leasing method as described in the above embodiments. For example, the electronic device may implement... Figure 1 The steps shown are as follows.

[0104] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0105] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A battery charging heating control method, characterized in that, Includes the following steps: Upon receiving a charging connection signal, the battery's pre-charging temperature is obtained; When it is determined that the pre-charging temperature is less than or equal to the first temperature threshold, the first ambient temperature value and the rated capacity of the battery pack are obtained. Based on the first ambient temperature value and the rated capacity of the battery pack, a first preset heating power is determined, and an external power supply is controlled to heat the battery with the first preset heating power. Based on the first ambient temperature value and the rated capacity of the battery pack, a first preset heating power is determined. This includes traversing a heating power table to obtain a first preset heating power corresponding to the first ambient temperature value and the rated capacity of the battery pack; the heating power table includes: multiple sets of ambient temperature value ranges, battery pack rated capacity ranges, and a first preset heating power corresponding to each of the ambient temperature value ranges and the battery pack rated capacity ranges.

2. The battery charging heating control method according to claim 1, characterized in that, After heating the battery with the first preset heating power, the process further includes: Get the battery's first real-time temperature; When the first real-time temperature is determined to be greater than the second temperature threshold, heating of the battery is stopped and charging of the battery is started, wherein the second temperature threshold is greater than the first temperature threshold.

3. The battery charging heating control method according to claim 2, characterized in that, After determining that the first real-time temperature is greater than the second temperature threshold, stopping battery heating and starting battery charging further includes: When the current battery level reaches the first charge level, obtain the battery's second temperature; When the second temperature is determined to be less than or equal to the third temperature threshold, the second ambient temperature value is obtained; the third temperature threshold is greater than the second temperature threshold. Based on the second ambient temperature value and the rated capacity of the battery pack, the heating power table is iterated to obtain the second preset heating power, and the battery is heated with the second preset heating power.

4. The battery charging heating control method according to claim 3, characterized in that, After receiving the charging connection signal and before determining that the pre-charging temperature is less than or equal to the first temperature threshold, the process further includes: The charging mode of the battery is obtained based on the charging connection signal; the charging mode includes DC charging mode and AC charging mode. The first temperature threshold is determined based on the charging mode.

5. The battery charging heating control method according to claim 4, characterized in that, After the step of acquiring the first real-time temperature of the battery and before the step of determining that the first real-time temperature is greater than the second temperature threshold, the following steps are included: The charging mode of the battery is obtained based on the charging connection signal; the charging mode includes DC charging mode and AC charging mode. The second temperature threshold is determined based on the charging mode.

6. The battery charging heating control method according to claim 4, characterized in that, The first temperature threshold corresponding to the DC charging mode is greater than the first temperature threshold corresponding to the AC charging mode.

7. A battery charging and heating control system, characterized in that, include: A first acquisition module is configured to acquire the battery's pre-charging temperature upon receiving a charging connection signal. The second acquisition module is configured to acquire the first ambient temperature value and the rated capacity of the battery pack when the pre-charging temperature is less than or equal to the first temperature threshold. The first determining module is configured to determine a first preset heating power based on the first ambient temperature value and the rated capacity of the battery pack, and control an external power supply to heat the battery with the first preset heating power. The first determining module determines the first preset heating power based on the first ambient temperature value and the rated capacity of the battery pack in the following way: iterates through the heating power table to obtain the first preset heating power corresponding to the first ambient temperature value and the rated capacity of the battery pack; the heating power table includes: multiple sets of ambient temperature value ranges, battery pack rated capacity ranges, and the first preset heating power corresponding to each of the ambient temperature value ranges and the rated capacity ranges of the battery pack.

8. A terminal device, characterized in that, The terminal device includes: a memory, a processor, and a computer program stored in the memory and capable of running on the processor; When the computer program is executed by the processor, it implements the steps of the battery charging heating control method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a battery charging and heating control program, which, when executed by a processor, implements the steps of the battery charging and heating control method as described in any one of claims 1 to 6.

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