Automatic thermal balance charging method, apparatus, equipment, storage medium and product

Abstract

This application discloses an automatic thermal balance charging method, apparatus, device, storage medium, and product, relating to the field of vehicle battery charging technology. The automatic thermal balance charging method includes: activating an energy-saving mode when the battery charging time is less than a preset charging time; determining a variable adaptive charging current for the battery during charging in energy-saving mode; and determining the battery charging current based on a preset charging threshold range and the variable adaptive charging current. Because the vehicle battery is charged using a variable adaptive charging current in energy-saving mode, the extra energy consumption caused by turning on the air conditioner to cool the battery is avoided. Simultaneously, the heat dissipation and heat generation during battery charging achieve a dynamic balance, preventing a decrease in charging efficiency due to battery temperature rise during charging.

Description

Technical Field

[0001] This application relates to the field of vehicle battery charging technology, and in particular to automatic thermal balance charging methods, apparatus, equipment, storage media and products. Background Technology

[0002] With consumers becoming increasingly environmentally conscious and energy-saving, and amidst fluctuating oil prices, new energy vehicles are gaining popularity due to their affordability and environmental friendliness. Battery performance is a crucial factor in the selection and use of new energy vehicles, and optimizing the charging process has become a key research focus for major automakers.

[0003] In the current charging process of new energy vehicle batteries, the current is generally a fixed value. As the charging process proceeds, the battery generates a large amount of heat, so it is necessary to start a cooling system, including a water pump and air conditioning, to lower the battery temperature. However, turning on the air conditioning to cool down the battery will generate a large amount of electrical energy, and the heat generated by the battery will also reduce the charging efficiency, making the battery charging effect unsatisfactory. Summary of the Invention

[0004] The main objective of this application is to provide an automatic thermal balance charging method, apparatus, device, storage medium, and product, which aims to solve the technical problems of existing batteries having a generally fixed charging current, requiring water pumps and air conditioning to be turned on for cooling during the charging process, and resulting in low charging efficiency.

[0005] To achieve the above objectives, this application proposes an automatic thermal balance charging method, which includes:

[0006] When the battery charging time is less than the preset charging time, the energy-saving mode is activated.

[0007] In energy-saving mode, the variable adaptive charging current of the battery in the charging state is determined;

[0008] The charging current of the battery is determined based on the preset charging threshold range and the variable adaptive charging current.

[0009] In one embodiment, the step of determining the charging current of the battery based on a preset charging threshold range and the variable adaptive charging current includes:

[0010] Determine the preset charging threshold range under energy-saving mode;

[0011] The maximum and minimum charging currents are determined based on the preset charging threshold range;

[0012] If the variable adaptive charging current is greater than the maximum charging current, then the maximum charging current is used as the charging current of the battery.

[0013] If the variable adaptive charging current is less than the minimum charging current, then the minimum charging current is used as the charging current of the battery.

[0014] If the variable adaptive charging current is between the maximum charging current and the minimum charging current, then the variable adaptive charging current is used as the charging current of the battery.

[0015] In one embodiment, the step of determining the variable adaptive charging current of the battery in a charging state includes:

[0016] Determine the heat generated by the battery during charging;

[0017] The heat dissipation of the battery during charging was determined;

[0018] The variable adaptive charging current of the battery in the charging state is determined based on the heat dissipation and heat generation of the battery.

[0019] In one embodiment, the step of determining the heat generated by the battery in the charging state includes:

[0020] Obtain the operating voltage of each individual cell in the battery;

[0021] Obtain the remaining power status of the battery;

[0022] The battery open-circuit voltage is determined based on the remaining charge status;

[0023] The heat generated by the battery during charging is determined based on the battery open-circuit voltage and the battery cell operating voltage.

[0024] In one embodiment, the step of determining the heat dissipation of the battery in the charging state includes:

[0025] Obtain the heat dissipation compensation factor and the thermal conductivity coefficient of the battery;

[0026] Determine the cell temperature and coolant temperature of the battery;

[0027] Obtain the heat transfer distance from the battery cell to the coolant;

[0028] The amount of heat released by the battery during charging is determined based on the cell temperature, the coolant temperature, the heat transfer distance, the heat release compensation factor, and the battery thermal conductivity coefficient.

[0029] In one embodiment, the method further includes:

[0030] Obtain the battery temperature and remaining charge;

[0031] Determine the operating temperature range and remaining charge range of the battery in energy-saving mode;

[0032] If the temperature is within the operating temperature range and the remaining charge is within the remaining charge range, then the step of determining the variable adaptive charging current of the battery in the charging state is performed.

[0033] Furthermore, to achieve the above objectives, this application also proposes an automatic thermal balance charging device, which includes:

[0034] The mode switching module is used to activate the energy-saving mode when the battery charging time is less than the preset charging time.

[0035] A calculation module is used to determine the variable adaptive charging current of the battery in the charging state in energy-saving mode;

[0036] A thermal balance module is used to determine the charging current of the battery based on a preset charging threshold range and the variable adaptive charging current.

[0037] In addition, to achieve the above objectives, this application also proposes an automatic thermal balance charging device, the device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the automatic thermal balance charging method as described above.

[0038] In addition, to achieve the above objectives, this application also proposes a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the automatic thermal balance charging method described above.

[0039] In addition, to achieve the above objectives, this application also provides a computer program product, which includes a computer program that, when executed by a processor, implements the steps of the automatic thermal balance charging method described above.

[0040] One or more technical solutions proposed in this application have at least the following technical effects:

[0041] This application activates an energy-saving mode when the battery charging time is less than a preset charging time. In this mode, a variable adaptive charging current is determined for the battery during charging. The battery charging current is then determined based on a preset charging threshold range and the variable adaptive charging current. Because the vehicle battery is charged using a variable adaptive charging current in energy-saving mode, the extra energy consumption associated with cooling the battery by turning on the air conditioning is avoided. Simultaneously, the heat dissipation and heat generation during battery charging are dynamically balanced, preventing a decrease in charging efficiency due to battery overheating during charging. Attached Figure Description

[0042] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0043] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic flowchart of an embodiment of the automatic thermal balance charging method of this application.

[0045] Figure 2 This is a flowchart illustrating Embodiment 2 of the automatic thermal balance charging method of this application.

[0046] Figure 3 This is a schematic flowchart of Embodiment 3 of the automatic thermal balance charging method of this application;

[0047] Figure 4 This is a schematic diagram of the module structure of the automatic thermal balance charging device according to an embodiment of this application;

[0048] Figure 5 This is a schematic diagram of the device structure of the hardware operating environment involved in the automatic thermal balance charging method in the embodiments of this application.

[0049] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0050] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0051] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0052] The main solution of this application embodiment is: when the battery charging time is less than the preset charging time, the energy-saving mode is activated; in the energy-saving mode, the variable adaptive charging current of the battery in the charging state is determined; the charging current of the battery is determined based on the preset charging threshold range and the variable adaptive charging current.

[0053] In current technology, the current is generally fixed during charging. As the charging process progresses, the battery generates a lot of heat, so a cooling system, including a water pump and an air conditioning system, must be activated to lower the battery temperature. However, turning on the air conditioning to cool down the battery consumes a lot of electrical energy, and the heat generated by the battery also reduces the charging efficiency.

[0054] This application provides a solution that, by charging in energy-saving mode, only the cold water pump is turned on without turning on the air conditioner, and the charging current is automatically adjusted according to the real-time changing battery temperature gradient, so that the battery heat generation rate is always equal to the battery heat dissipation rate, maintaining the battery temperature stability, thereby improving charging efficiency and saving energy consumption.

[0055] It should be noted that the executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as an in-vehicle terminal, a server connected to the in-vehicle terminal, or an electronic device or virtual device capable of performing the above functions. The following description uses an automatic thermal balance charging device (hereinafter referred to as the charging device) as an example to illustrate this embodiment and the subsequent embodiments.

[0056] Based on this, embodiments of this application provide an automatic thermal balance charging method, referring to... Figure 1 , Figure 1 This is a schematic flowchart of the first embodiment of the automatic thermal balance charging method of this application.

[0057] In this embodiment, the automatic thermal balance charging method includes steps S10 to S30:

[0058] Step S10: When the battery charging time is less than the preset charging time, activate the energy-saving mode.

[0059] It should be noted that in practical applications, a preset charging time can be set according to charging needs. This preset charging time is also the charging time for the battery in energy-saving mode. When the vehicle's battery is charging, the charging equipment can record the charging time. If this charging time is less than the preset charging time, charging can proceed in energy-saving mode.

[0060] It should be understood that the aforementioned preset charging time can be set by the vehicle manufacturer at the factory or by the user, and this application embodiment does not limit this.

[0061] It should be noted that, generally speaking, during charging, the vehicle can activate the cooling system, using a water pump and air conditioning to cool the battery, preventing overheating that could reduce charging efficiency. When the water pump and air conditioning are on, the battery is in normal charging mode. In energy-saving mode, the charging equipment only activates the water pump to cool the battery during charging, without using the air conditioning, thus avoiding energy consumption caused by running the air conditioning.

[0062] In a specific implementation, the charging device of this application embodiment can record the charging time of the battery. When the charging time of the battery is less than the preset charging time, it can charge in an energy-saving mode to avoid the extra energy consumption caused by air conditioning cooling.

[0063] It should be understood that in energy-saving mode, charging with a conventional fixed current will cause the battery to continuously heat up, thereby affecting the battery's charging efficiency. Therefore, this application can further perform step S20 to determine the variable adaptive charging current of the battery in the charging state in energy-saving mode.

[0064] It should be noted that in energy-saving mode, the charging equipment can monitor the battery temperature gradient during the charging process and then automatically adjust the current based on the battery temperature gradient. That is, the battery is charged through variable adaptive charging current, so that the heat generation and heat dissipation during the battery charging process are dynamically balanced, thus achieving automatic thermal balance during the battery charging process.

[0065] In a specific implementation, the charging device of this application embodiment can monitor the battery temperature gradient when in energy-saving mode, thereby determining the variable adaptive charging current during the battery charging process, achieving thermal balance during battery charging, and avoiding a decrease in battery charging efficiency due to temperature rise.

[0066] Step S30: Determine the charging current of the battery based on the preset charging threshold range and the variable adaptive charging current.

[0067] It should be noted that the aforementioned preset charging threshold range is a range that can limit the charging current during the battery charging process. This preset charging threshold range can be set based on prior knowledge or determined based on deep learning algorithms, and the embodiments of this application do not impose any restrictions on it.

[0068] In one implementation of this application, the step of determining the charging current of the battery based on a preset charging threshold range and the variable adaptive charging current includes:

[0069] Determine the preset charging threshold range under energy-saving mode;

[0070] Determine the maximum charging current and the minimum charging current based on the preset charging threshold range;

[0071] If the variable adaptive charging current is greater than the maximum charging current, then use the maximum charging current as the charging current of the battery;

[0072] If the variable adaptive charging current is less than the minimum charging current, then use the minimum charging current as the charging current of the battery;

[0073] If the variable adaptive charging current is between the maximum charging current and the minimum charging current, then use the variable adaptive charging current as the charging current of the battery.

[0074] It should be noted that when determining the preset charging threshold range in the energy-saving mode, the maximum charging current and the minimum charging current in the energy-saving mode can be determined based on this preset charging range. The maximum charging current and the minimum charging current can be set according to the material characteristics of the battery, the battery capacity, etc., and the embodiments of the present application do not limit this.

[0075] It can be understood that when the variable adaptive charging current I is greater than the maximum charging current Imax, that is, I > Imax, the maximum charging current can be used as the current charging current of the battery; when the variable adaptive charging current I is less than the minimum charging current Imin, that is, I < Imin, the minimum charging current can be used as the current charging current of the battery; when the variable adaptive charging current I is between the maximum charging current Imax and the minimum charging current Imin, that is, Imin ≤ I ≤ Imax, the variable adaptive charging current is used as the current charging current of the battery.

[0076] It should be noted that by comparing the variable adaptive charging current with the preset charging threshold range, the current charging current of the battery is determined, thereby improving the charging efficiency of the battery.

[0077] In the embodiments of the present application, when the charging time of the battery is less than the preset charging time, the energy-saving mode is turned on; in the energy-saving mode, the variable adaptive charging current of the battery in the charging state is determined; the charging current of the battery is determined based on the preset charging threshold range and the variable adaptive charging current. Since the battery is charged by the variable adaptive charging current in the energy-saving mode, the additional energy consumption caused by turning on the air conditioner to cool the battery is avoided, and at the same time, the heat dissipation and heat generation of the battery charging reach a dynamic balance, avoiding the reduction of the charging efficiency due to the battery temperature rise during the battery charging process.

[0078] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above embodiment 1 can be referred to the above introduction and will not be described in detail later. Figure 2 In this embodiment of the application, the step of determining the variable adaptive charging current of the battery in the charging state includes:

[0079] Step S21: Determine the heat generated by the battery in the charging state;

[0080] It is understandable that during battery charging, heat is generated due to internal chemical reactions and the battery's internal resistance. The magnitude of the charging current directly affects the rate of electrochemical reactions within the battery and the heat generated when the battery passes through internal resistance. A higher charging current results in more vigorous electrochemical reactions and generates more heat when the battery passes through internal resistance. Specifically, to determine the heat generated by the battery during charging, the steps include:

[0081] Obtain the operating voltage of each individual cell in the battery;

[0082] Obtain the remaining power status of the battery;

[0083] The battery open-circuit voltage is determined based on the remaining charge status;

[0084] The heat generated by the battery during charging is determined based on the battery open-circuit voltage and the battery cell operating voltage.

[0085] It should be noted that the single-cell operating voltage of a vehicle battery, also known as the load voltage of a single battery, refers to the terminal voltage of the vehicle battery when it is in a discharging state after a load is connected. The single-cell operating voltage is one of the important parameters for measuring the performance of a vehicle battery, reflecting the energy output capability of the battery under actual working conditions. The single-cell operating voltage of a battery is related to parameters such as battery type, battery state, load requirements, and ambient temperature. The embodiments in this application do not limit its actual value.

[0086] Understandably, the state of charge (SOC) of a battery, or the usable state of the remaining charge, can be represented by its SOC value. The open-circuit voltage of a battery refers to the voltage difference between its positive and negative terminals when no external circuit is connected. During charging, as the battery's SOC changes, its open-circuit voltage increases accordingly. By monitoring the SOC value, the open-circuit voltage can be determined.

[0087] It should be noted that when determining the remaining state of charge of the battery, the battery open-circuit voltage can be determined based on that remaining state of charge. The battery open-circuit voltage can be determined by looking up a table or by using a neural network model; this application does not limit the method used.

[0088] It should be explained that the heat generated by the battery during charging can be determined based on the battery's single-cell operating voltage, the battery's variable adaptive charging current, and the battery's open-circuit voltage.

[0089] Specifically, the heat generation Q1 of the battery in the charging state in this application can be calculated as follows:

[0090] Q1 = (UV) * I;

[0091] Where Q1 is the heat generated, U is the single cell operating voltage of the battery, V is the open circuit voltage of the battery, and I is the variable adaptive charging current.

[0092] Step S22: Determine the heat dissipation of the battery in the charging state;

[0093] It should be noted that in energy-saving mode, the charging device uses a water pump to dissipate heat from the battery. At this time, the battery's discharge rate is related to the relevant parameters of the coolant. Specifically, to determine the heat dissipation of the battery during charging, the step of determining the heat dissipation of the battery during charging includes:

[0094] Obtain the heat dissipation compensation factor and the thermal conductivity coefficient of the battery;

[0095] Determine the cell temperature and coolant temperature of the battery;

[0096] Obtain the heat transfer distance from the battery cell to the coolant;

[0097] The amount of heat released by the battery during charging is determined based on the cell temperature, the coolant temperature, the heat transfer distance, the heat release compensation factor, and the battery thermal conductivity coefficient.

[0098] It should be noted that during battery charging, changes in charging current and battery temperature can lead to variations in the rate of heat release. The aforementioned heat release compensation factor is a parameter used to compensate for the heat release during battery charging. The value of this heat release compensation factor can be determined based on the specific application, and this application does not impose any limitations on it.

[0099] It is understood that the aforementioned battery thermal conductivity coefficient is the same as the heat transfer coefficient of the battery during the heat dissipation process through the water pump. This thermal conductivity coefficient is related to parameters such as the battery structure and the type of coolant. The embodiments of this application do not limit this, and can be changed accordingly based on the actual application.

[0100] Specifically, the heat dissipation Q2 of the battery in the charging state in this application can be calculated as follows:

[0101] Q2 = (L*K*ΔT) / x;

[0102] Where Q2 is the heat released, L is the heat release compensation factor, K is the battery thermal conductivity coefficient, x is the distance from the battery cell to the coolant, ΔT=T1-T2, T1 is the battery cell temperature, and T2 is the battery coolant temperature.

[0103] Step S23: Determine the variable adaptive charging current of the battery in the charging state based on the heat dissipation and heat generation of the battery.

[0104] It should be noted that in order to achieve thermal equilibrium during battery charging, the heat released and the heat generated during charging must be equal, that is, Q1 and Q2 must be equal. Since the battery's individual cell operating voltage, cell temperature, coolant temperature, thermal conductivity, heat release compensation factor, and distance from the battery to the cell are all known or measurable, the variable adaptive charging current of the battery can be determined. Specifically, the variable adaptive charging current I can be calculated as follows:

[0105]

[0106] This application embodiment determines the heat generated by the battery during charging; determines the heat released by the battery during charging; and determines a variable adaptive charging current for the battery during charging based on the heat generated and released by the battery. Because the variable adaptive charging current for the battery during charging is determined by balancing the heat generated and released by the battery, the charging efficiency of the battery is improved.

[0107] Based on the first and / or second embodiments of this application, in the third embodiment of this application, the content that is the same as or similar to the first and / or second embodiments described above can be referred to the above description and will not be repeated hereafter. Based on this, please refer to... Figure 3 In this embodiment of the application, the method further includes:

[0108] Step S100: Obtain the battery temperature and remaining power.

[0109] Step S200: Determine the operating temperature range and remaining power range of the battery in energy-saving mode;

[0110] Step S300: If the temperature is within the operating temperature range and the remaining charge is within the remaining charge range, perform the step of determining the variable adaptive charging current of the battery in the charging state.

[0111] It should be noted that, in the embodiments of the application, in order to further improve charging efficiency, the operating temperature range and remaining power range of the battery in energy-saving mode can be preset. Based on the preset operating temperature range, the minimum and maximum operating temperatures in energy-saving mode can be determined. When the battery temperature is lower than the minimum operating temperature, battery cooling may not be necessary, i.e., the cooling system is not activated. When the battery temperature is within the operating temperature range, energy-saving mode is activated for battery temperature management. When the battery temperature is higher than the maximum operating temperature, it indicates that energy-saving mode may not be able to meet the battery cooling requirements, and the cooling system needs to enter normal mode for cooling, i.e., the water pump and air conditioner are activated for cooling.

[0112] Similarly, based on the remaining power range, the maximum and minimum remaining power values ​​in energy-saving mode can be determined.

[0113] Understandably, the remaining battery capacity can be determined based on the remaining charge status. When the remaining battery capacity is less than the minimum remaining capacity, it indicates that the current remaining battery capacity is too low and fast charging may be necessary. In fast charging mode, the battery generates a lot of heat, so the cooling system needs to enter normal mode to cool down, i.e., turn on the water pump and air conditioner to cool down. When the remaining battery capacity is within the remaining capacity range, the energy-saving mode is activated to manage battery temperature. When the remaining battery capacity is greater than the maximum remaining capacity, the battery can enter trickle charging mode. In this case, the heat generated during the charging process is low, and the cooling system does not need to be activated.

[0114] It should be understood that when the battery temperature and remaining charge meet the requirements, the charging device can enter the energy-saving mode to charge, thereby improving charging efficiency while reducing energy consumption.

[0115] This application embodiment obtains the battery's temperature and remaining charge; determines the battery's operating temperature range and remaining charge range in energy-saving mode; and if the temperature is within the operating temperature range and the remaining charge is within the remaining charge range, executes the step of determining the variable adaptive charging current of the battery in the charging state. Since the determination of whether to enter energy-saving mode for charging is based on the battery's temperature and remaining charge, the applicability of the automatic thermal balance charging method is improved.

[0116] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the automatic thermal balance charging method of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0117] This application also provides an automatic thermal balance charging device, please refer to... Figure 4 The automatic thermal balance charging device includes:

[0118] The mode switching module 10 is used to activate the energy-saving mode when the battery charging time is less than the preset charging time.

[0119] Calculation module 20 is used to determine the variable adaptive charging current of the battery in the charging state in energy-saving mode;

[0120] The thermal balance module 30 is used to determine the charging current of the battery based on a preset charging threshold range and the variable adaptive charging current.

[0121] The automatic thermal balance charging device provided in this application, employing the automatic thermal balance charging method described in the above embodiments, can solve the technical problems of existing batteries having a generally fixed charging current, requiring the activation of water pumps and air conditioning for cooling during charging, and resulting in low charging efficiency. Compared with the prior art, the beneficial effects of the automatic thermal balance charging device provided in this application are the same as those of the automatic thermal balance charging method provided in the above embodiments, and other technical features in the automatic thermal balance charging device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0122] This application provides an automatic thermal balancing charging device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the automatic thermal balancing charging method in the above embodiment 1.

[0123] The following is for reference. Figure 5 The diagram illustrates a structural schematic suitable for implementing the automatic thermal balance charging device of the embodiments of this application. The automatic thermal balance charging device in the embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital radio receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Description), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 5 The automatic thermal balance charging device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0124] like Figure 5 As shown, the automatic thermal balancing charging device may include a processing unit 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM) 1004. The RAM 1004 also stores various programs and data required for the operation of the automatic thermal balancing charging device. The processing unit 1001, ROM 1002, and RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touchscreen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; storage devices 1003 including, for example, magnetic tape, hard disk, etc.; and communication devices 1009. The communication device 1009 allows the automatic thermal balancing charging device to communicate wirelessly or wiredly with other devices to exchange data. Although the figures show automatic thermal balancing charging devices with various systems, it should be understood that implementation or possession of all the systems shown is not required. More or fewer systems may be implemented alternatively.

[0125] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 1003, or installed from ROM 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0126] The automatic thermal balance charging device provided in this application, employing the automatic thermal balance charging method described in the above embodiments, can solve the technical problems of existing batteries having a generally fixed charging current, requiring the activation of water pumps and air conditioning for cooling during charging, and resulting in low charging efficiency. Compared with the prior art, the beneficial effects of the automatic thermal balance charging device provided in this application are the same as those of the automatic thermal balance charging method provided in the above embodiments, and other technical features of this automatic thermal balance charging device are the same as those disclosed in the previous embodiment method, and will not be repeated here.

[0127] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0128] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0129] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the automatic thermal balance charging method in the above embodiments.

[0130] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, 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 devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0131] The aforementioned computer-readable storage medium may be included in the automatic thermal balancing charging device; or it may exist independently and not assembled into the automatic thermal balancing charging device.

[0132] The aforementioned computer-readable storage medium carries one or more programs that, when executed by the automatic thermal balancing charging device, cause the automatic thermal balancing charging device to:

[0133] When the battery charging time is less than the preset charging time, the energy-saving mode is activated.

[0134] In energy-saving mode, the variable adaptive charging current of the battery in the charging state is determined;

[0135] The charging current of the battery is determined based on the preset charging threshold range and the variable adaptive charging current.

[0136] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0137] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. 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 a 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.

[0138] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0139] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the above-described automatic thermal balance charging method. This solves the technical problems of existing batteries having a generally fixed charging current, requiring water pumps and air conditioning for cooling during charging, and resulting in low charging efficiency. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the automatic thermal balance charging method provided in the above embodiments, and will not be repeated here.

[0140] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the automatic thermal balance charging method described above.

[0141] The computer program product provided in this application can solve the technical problems of existing batteries having a generally fixed charging current, requiring water pumps and air conditioning to be turned on for cooling during the charging process, and resulting in low charging efficiency. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the automatic thermal balance charging method provided in the above embodiments, and will not be repeated here.

[0142] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. An automatic thermal balance charging method, characterized in that, The method includes: When the battery charging time is less than the preset charging time, the energy-saving mode is activated. In energy-saving mode, the variable adaptive charging current of the battery in the charging state is determined; The charging current of the battery is determined based on the preset charging threshold range in energy-saving mode and the variable adaptive charging current. The step of determining the variable adaptive charging current of the battery in the charging state includes: Determine the heat generated by the battery during charging; The heat dissipation of the battery during charging was determined; The variable adaptive charging current is determined when the heat generated and the heat released by the battery reach thermal equilibrium during charging.

2. The automatic thermal balance charging method as described in claim 1, characterized in that, The step of determining the charging current of the battery based on the preset charging threshold range in energy-saving mode and the variable adaptive charging current includes: The maximum and minimum charging currents are determined based on the preset charging threshold range in energy-saving mode. If the variable adaptive charging current is greater than the maximum charging current, then the maximum charging current is used as the charging current of the battery. If the variable adaptive charging current is less than the minimum charging current, then the minimum charging current is used as the charging current of the battery. If the variable adaptive charging current is between the maximum charging current and the minimum charging current, then the variable adaptive charging current is used as the charging current of the battery.

3. The automatic thermal balance charging method as described in claim 1, characterized in that, The step of determining the heat generated by the battery in the charging state includes: Obtain the operating voltage of each individual cell in the battery; Obtain the remaining power status of the battery; The battery open-circuit voltage is determined based on the remaining charge status; The heat generated by the battery during charging is determined based on the battery open-circuit voltage and the battery cell operating voltage.

4. The automatic thermal balance charging method as described in claim 1, characterized in that, The step of determining the heat dissipation of the battery in the charging state includes: Obtain the heat dissipation compensation factor and the thermal conductivity coefficient of the battery; Determine the cell temperature and coolant temperature of the battery; Obtain the heat transfer distance from the battery cell to the coolant; The amount of heat released by the battery during charging is determined based on the cell temperature, the coolant temperature, the heat transfer distance, the heat release compensation factor, and the battery thermal conductivity coefficient.

5. The automatic thermal balance charging method as described in claim 1, characterized in that, The method further includes: Obtain the battery temperature and remaining charge; Determine the operating temperature range and remaining charge range of the battery in energy-saving mode; If the temperature is within the operating temperature range and the remaining charge is within the remaining charge range, then the step of determining the variable adaptive charging current of the battery in the charging state is performed.

6. An automatic thermal balance charging device, characterized in that, The automatic thermal balance charging device includes: The mode switching module is used to activate the energy-saving mode when the battery charging time is less than the preset charging time. A calculation module is used to determine the variable adaptive charging current of the battery in the charging state in energy-saving mode; A thermal balance module is used to determine the charging current of the battery based on a preset charging threshold range in energy-saving mode and the variable adaptive charging current. Determining the variable adaptive charging current of the battery in the charging state includes: Determine the heat generated by the battery during charging; The heat dissipation of the battery during charging was determined; The variable adaptive charging current is determined when the heat generated and the heat released by the battery reach thermal equilibrium during charging.

7. An automatic thermal balance charging device, characterized in that, The device includes: a memory, a processor, and an automatic thermal balancing charging program stored in the memory and executable on the processor, the automatic thermal balancing charging program being configured to implement the steps of the automatic thermal balancing charging method as described in any one of claims 1 to 5.

8. A storage medium, characterized in that, The storage medium stores an automatic thermal balance charging program, which, when executed by a processor, implements the steps of the automatic thermal balance charging method as described in any one of claims 1 to 5.

9. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the steps of the automatic thermal balance charging method as described in any one of claims 1 to 5.

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