Battery charging method and device, equipment and storage medium

Abstract

The invention discloses a battery charging method, device and equipment and a storage medium, and relates to the technical field of battery thermal management, and the battery charging method comprises the following steps: obtaining the heat production quantity, the heat dissipation quantity and a preset heat dissipation capability value of a battery; obtaining a current heat dissipation capability value according to the heat production quantity and the heat dissipation quantity; and obtaining charging power according to the current heat dissipation capability value and the preset heat dissipation capability value, and charging the battery according to the charging power. The current heat dissipation capacity value is calculated by obtaining the heat generation quantity, the heat dissipation quantity and the preset heat dissipation capacity value of the battery in the charging process, and the proper charging power is determined based on the preset heat dissipation capacity value and the current heat dissipation capacity value, so that the charging power can be dynamically adjusted according to the real-time thermal state of the battery, the charging efficiency is improved, and the service life of the battery is prolonged.

Description

Technical Field

[0001] The present application relates to the field of battery thermal management technology, and in particular to a battery charging method, device, equipment and storage medium. Background Art

[0002] The current charging strategy constraints are charging power, temperature, battery SOC, cell imbalance or battery temperature imbalance. However, with the changes in various factors such as charging capacity and charging power, the temperature inside the battery will become more unpredictable. If the temperature change inside the battery cannot be predicted and controlled, it will cause large fluctuations in the temperature inside the battery, causing thermal fatigue inside the battery, affecting the battery life, and even causing battery failure, bringing safety risks.

[0003] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the present application is to provide a battery charging method, device, equipment and storage medium, aiming to solve the technical problem in the existing battery charging technology that the charging power cannot be dynamically adjusted according to the real-time heat generation and heat dissipation capacity of the battery.

[0005] To achieve the above object, the present application proposes a battery charging method, the method comprising:

[0006] Obtain the heat generated by the battery, the heat dissipated, and the preset heat dissipation capacity value;

[0007] Obtaining a current heat dissipation capacity value according to the heat generated and the heat dissipated;

[0008] A charging power is obtained according to the current heat dissipation capability value and the preset heat dissipation capability value, and the battery is charged according to the charging power.

[0009] In one embodiment, the step of obtaining the heat generated and the heat dissipated by the battery includes:

[0010] Obtain the current voltage, current current, continuous charging time, total battery capacity, current battery capacity, coolant flow rate, cooling water pipe diameter, cooling water pipe outlet temperature, and cooling water pipe inlet temperature of the battery;

[0011] Obtaining a value of a change in power within the continuous charging time according to the continuous charging time and the current power;

[0012] Obtaining a cooling water pipe inlet and outlet temperature difference according to the cooling water pipe outlet temperature and the cooling water pipe inlet temperature;

[0013] The heat generated and the heat dissipated are obtained according to at least one of the current voltage, the current current, the continuous charging time, the total power, the coolant flow rate, the cooling water pipe diameter, the cooling water pipe inlet and outlet temperature difference, and the power change value.

[0014] In one embodiment, the step of obtaining the heat generated and the heat dissipated according to at least one of the current voltage, the current current, the continuous charging time, the total power, the coolant flow rate, the cooling water pipe diameter, the cooling water pipe inlet and outlet temperature difference, and the power change value comprises:

[0015] Obtaining heat generation amount according to the current voltage, the current current, the continuous charging time, the total power and the power change value;

[0016] The heat dissipation amount is obtained according to the coolant flow rate, the cooling water pipe diameter, the continuous charging time and the cooling water pipe temperature difference.

[0017] In one embodiment, the step of obtaining a charging power according to the current heat dissipation capability value and the preset heat dissipation capability value, and charging the battery according to the charging power includes:

[0018] A first preset heat dissipation capacity value, a second preset heat dissipation capacity value, a third preset heat dissipation capacity value and a fourth preset heat dissipation capacity value are obtained according to the preset heat dissipation capacity value, wherein the first preset heat dissipation capacity value is less than the second preset heat dissipation capacity value, the second preset heat dissipation capacity value is less than the third preset heat dissipation capacity value, and the third preset heat dissipation capacity value is less than the fourth preset heat dissipation capacity value;

[0019] obtaining a first charging power, a second charging power, and a third charging power according to at least one of the first preset heat dissipation capability value, the second preset heat dissipation capability value, the third preset heat dissipation capability value, and the fourth preset heat dissipation capability value and the current heat dissipation capability value, wherein the first charging power is greater than the second charging power, and the second charging power is greater than the third charging power;

[0020] The battery is charged according to any one of the first charging power, the second charging power, and the third charging power.

[0021] In one embodiment, the step of obtaining the first charging power, the second charging power, and the third charging power according to at least one of the first preset heat dissipation capacity value, the second preset heat dissipation capacity value, the third preset heat dissipation capacity value, and the fourth preset heat dissipation capacity value and the preset heat dissipation capacity value includes:

[0022] When the current heat dissipation capacity value is greater than the first preset heat dissipation capacity value and less than the second preset heat dissipation capacity value, obtaining a first charging power;

[0023] When the current heat dissipation capacity value is greater than the second preset heat dissipation capacity value and less than the third preset heat dissipation capacity value, obtaining a second charging power;

[0024] When the current heat dissipation capability value is greater than the third preset heat dissipation capability value and less than the fourth preset heat dissipation capability value, a third charging power is obtained.

[0025] In one embodiment, before the step of obtaining the heat generated by the battery, the heat dissipated, and the preset heat dissipation capacity value, the step further includes:

[0026] Acquire a first battery temperature, a second battery temperature, a current battery temperature, a first battery power, a second battery power, a current power, a fourth charging power, a fifth charging power, a current charging power, a first battery life, a second battery life, a current battery life, a first preset heat dissipation value, a fourth preset heat dissipation value, and a current heat dissipation capacity value, wherein the first battery temperature is lower than the second battery temperature, the first battery power is lower than the second battery power, the fourth charging power is lower than the fifth charging power, and the first battery life is lower than the second battery life;

[0027] Determine whether the battery can be charged based on the first battery temperature, the second battery temperature, the current battery temperature, the first battery power, the second battery power, the current power, the fourth charging power, the fifth charging power, the current charging power, the first battery life, the second battery life, the current battery life, the first preset heat dissipation value, the fourth preset heat dissipation value and the current heat dissipation capacity value.

[0028] In one embodiment, the step of determining whether the battery can be charged according to the first battery temperature, the second battery temperature, the current battery temperature, the first battery power, the second battery power, the current power, the fourth charging power, the fifth charging power, the current charging power, the first battery life, the second battery life, the current battery life, the first preset heat dissipation value, the fourth preset heat dissipation value, and the current heat dissipation capacity value includes:

[0029] When the first battery temperature is lower than the current battery temperature and the current battery temperature is lower than the second battery temperature, determining that the battery meets a first charging condition;

[0030] When the first battery power is less than the current power and the current power is less than the second battery power, determining that the battery meets a second charging condition;

[0031] When the fourth charging power is less than the current charging power and the current charging power is less than the fifth charging power, determining that the battery meets a third charging condition;

[0032] When the first battery life is less than the current battery life and the current battery life is less than the second battery life, determining that the battery meets a fourth charging condition;

[0033] When the first preset heat dissipation value is less than the current heat dissipation capacity value and the current heat dissipation capacity value is less than the fourth preset heat dissipation value, determining that the battery meets the fifth charging condition;

[0034] When the first charging condition, the second charging condition, the third charging condition, the fourth charging condition, and the fifth charging condition are all satisfied, the battery is controlled to be charged.

[0035] In addition, to achieve the above-mentioned purpose, the present application also proposes a battery charging device, the battery charging device comprising:

[0036] An acquisition module is used to obtain the heat generated by the battery, the heat dissipated, and a preset heat dissipation capacity value;

[0037] An obtaining module, used for obtaining a current heat dissipation capacity value according to the heat generated and the heat dissipated;

[0038] A charging module is used to obtain a charging power according to the current heat dissipation capacity value and the preset heat dissipation capacity value, and to charge the battery according to the charging power.

[0039] In addition, to achieve the above objectives, the present application also proposes a battery charging device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the battery charging method described above.

[0040] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the battery charging method described above are implemented.

[0041] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the battery charging method described above are implemented.

[0042] One or more technical solutions proposed in this application have at least the following technical effects:

[0043] By monitoring the heat generated by the battery, the heat dissipated, the preset heat dissipation capacity value and the current heat dissipation capacity value, the appropriate charging power is dynamically determined by comparing the current heat dissipation capacity value with the preset current heat dissipation capacity value, so as to charge the battery. This solves the problem of the battery charging strategy in the prior art lacking dynamic matching of heat generation and heat dissipation, achieves better battery thermal management, effectively avoids battery performance degradation and shortened life due to temperature fluctuations, improves charging efficiency and extends battery life. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0045] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0046] Figure 1 A schematic diagram of a flow chart provided for the first embodiment of the battery charging method of the present application;

[0047] Figure 2 A schematic diagram of a flow chart provided for the second embodiment of the battery charging method of the present application;

[0048] Figure 3 This is a schematic diagram of the module structure of a battery charging device according to an embodiment of the present application;

[0049] Figure 4 Schematic diagram of the device structure of the hardware operating environment involved in the battery charging method in the embodiment of the present application.

[0050] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0051] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0052] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0053] The main solution of the embodiment of the present application is: obtaining the heat generated by the battery, the heat dissipated, and the preset heat dissipation capacity value;

[0054] Obtaining a current heat dissipation capacity value according to the heat generated and the heat dissipated;

[0055] A charging power is obtained according to the current heat dissipation capability value and the preset heat dissipation capability value, and the battery is charged according to the charging power.

[0056] In this embodiment, for the convenience of description, the following description is made by taking the identification of the battery charging device as the execution subject.

[0057] The existing battery charging technology cannot dynamically adjust the charging power according to the real-time heat generation and heat dissipation capacity of the battery.

[0058] The present application provides a solution by monitoring the heat generated by the battery, the heat dissipated, the preset heat dissipation capacity value and the current heat dissipation capacity value. By comparing the current heat dissipation capacity value with the preset current heat dissipation capacity value, the appropriate charging power is dynamically determined to charge the battery. The problem of the lack of dynamic matching of heat generation and heat dissipation in the battery charging strategy in the prior art is solved, and better battery thermal management is achieved, which effectively avoids the degradation of battery performance and shortened life due to temperature fluctuations, improves charging efficiency and extends the service life of the battery.

[0059] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a battery charging device, etc. The following takes a battery charging device as an example to illustrate this embodiment and the following embodiments.

[0060] Based on this, the present application embodiment provides a battery charging method, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the battery charging method of the present application.

[0061] In this embodiment, the battery charging method includes steps S10 to S30:

[0062] Step S10, obtaining the heat generated by the battery, the heat dissipated, and a preset heat dissipation capacity value;

[0063] It should be noted that heat generation refers to the heat generated by the battery during charging due to electrochemical reactions and current passing through the internal resistance of the battery. Heat generation is one of the parameters that need to be monitored during battery charging because it is directly related to the temperature change of the battery.

[0064] In addition, it should be noted that heat dissipation refers to the heat that the battery dissipates into the environment during charging through a cooling system, such as air cooling, liquid cooling, etc. The heat dissipation is related to the cooling efficiency of the battery and the design of the cooling system.

[0065] It should be noted that the preset heat dissipation capacity value is a value pre-set according to the design parameters and safety standards of the battery, and is used to indicate the heat dissipation capacity of the battery under safe operating conditions.

[0066] In a feasible implementation, step S10 may include steps S11 to S14:

[0067] Step S11, obtaining the current voltage, current current, continuous charging time, total battery power, current battery power, coolant flow rate, cooling water pipe diameter, cooling water pipe outlet temperature, and cooling water pipe inlet temperature of the battery;

[0068] It should be noted that the current voltage (U) refers to the voltage value of the battery at the time of charging, which is usually measured in real time by a voltage sensor in a battery management system.

[0069] In addition, it should be noted that the current (I) refers to the current value of the battery at the time of charging, which is monitored in real time by a current sensor.

[0070] It should be noted that the continuous charging time (Δt) refers to the time that has passed since the start of charging. This parameter is crucial for calculating the energy change of the battery within a certain period of time.

[0071] In addition, it should be noted that the total power (W) of the battery refers to the rated energy capacity of the battery, which represents the total energy stored in the battery when it is fully charged.

[0072] It should be noted that the current capacity (SOC) of a battery refers to the current state of charge of the battery, which is expressed as a percentage of the total battery capacity and reflects the relative capacity of the battery from fully discharged to fully charged.

[0073] In addition, it should be noted that the coolant flow rate (v) refers to the flow rate of the coolant in the cooling system, which affects the heat dissipation efficiency of the battery.

[0074] It should be noted that the cooling water pipe diameter (s) refers to the inner diameter of the cooling water pipe, which affects the flow rate and heat dissipation capacity of the coolant.

[0075] In addition, it should be noted that the cooling water pipe outlet temperature (T_out) refers to the temperature of the coolant when it leaves the battery cooling area, reflecting the extent to which the heat generated by the battery is taken away.

[0076] It should be noted that the cooling water pipe inlet temperature (T_in) refers to the temperature of the coolant when it enters the battery cooling area, and the difference between it and the outlet temperature can be used to calculate the heat dissipation.

[0077] Step S12, obtaining a value of a change in the amount of electricity during the continuous charging time according to the continuous charging time and the current amount of electricity;

[0078] It should be noted that the charge change value (ΔSOC) refers to the absolute change in battery charge within the continuous charging time Δt, that is, the difference between the current charge and the charge before Δt.

[0079] It is understandable that if the SOC of the battery is 20% when charging starts, and after a continuous charging time Δt, such as 30 minutes, the current charge becomes 40%, then the charge change value ΔSOC is 20%.

[0080] Step S13, obtaining the inlet and outlet temperature difference of the cooling water pipe according to the outlet temperature of the cooling water pipe and the inlet temperature of the cooling water pipe;

[0081] It should be noted that the inlet and outlet temperature difference (ΔT) of the cooling water pipe refers to the difference between the outlet temperature and the inlet temperature of the cooling water pipe, which reflects the amount of heat released by the battery during the cooling process.

[0082] It is understandable that if the temperature of the coolant when it enters the battery cooling system, that is, the water inlet temperature is 20°C, and the temperature when it flows out is 30°C, the temperature difference ΔT is 10°C.

[0083] Step S14, obtaining heat generation and heat dissipation according to at least one of the current voltage, the current current, the continuous charging time, the total power, the coolant flow rate, the cooling water pipe diameter, the cooling water pipe inlet and outlet temperature difference, and the power change value.

[0084] It is understandable that the heat generated can be obtained through the current voltage, current current, continuous charging time, total power and power change value.

[0085] In addition, it can be understood that the heat dissipation can be obtained by the coolant flow rate, the cooling water pipe diameter, the continuous charging time and the cooling water pipe temperature difference.

[0086] In a feasible implementation, step S13 may include steps A131 to A132:

[0087] Step A131, obtaining heat generation amount according to the current voltage, the current current, the continuous charging time, the total power and the power change value;

[0088] It can be understood that the calculation formula for heat generation is as follows:

[0089] Q 产热 =UIΔt-WΔSOC (Formula 1)

[0090] In the above formula 1, Q 产热is the heat generated, U is the current voltage, I is the current current, Δt is the continuous charging time, W is the total power, and ΔSOC is the change in power.

[0091] Step A132, obtaining heat dissipation according to the coolant flow rate, the cooling water pipe diameter, the continuous charging time and the cooling water pipe temperature difference.

[0092] It can be understood that the heat dissipation calculation formula is as follows:

[0093] Q 散热 =vsΔtΔT (Formula 2)

[0094] In the above formula 2, Q 散热 is the heat dissipation, v is the coolant flow rate, s is the cooling water pipe diameter, Δt is the continuous charging time, and ΔT is the cooling water pipe temperature difference.

[0095] The calculation formula of the current heat dissipation capacity value can be obtained from the above formula 1 and the above formula 2, and the following formula 3 is obtained after sorting:

[0096] Q=Q 产热 -Q 散热 =(UIΔt-WΔSOC)-vsΔtΔT (Formula 3)

[0097] In the above formula 3, is the current heat dissipation capacity value, Q 产热 is the heat produced, Q 散热 is the heat dissipated, U is the current voltage, I is the current current, Δt is the continuous charging time, W is the total power, ΔSOC is the power change value, v is the coolant flow rate, s is the cooling water pipe diameter, and ΔT is the cooling water pipe temperature difference.

[0098] Step S20, obtaining a current heat dissipation capacity value according to the heat generated and the heat dissipated;

[0099] It should be noted that the current heat dissipation capacity value is calculated based on the heat generated and heat dissipated by the battery, and indicates the battery's ability to dissipate heat in the current state.

[0100] It is understandable that the current heat dissipation capacity value is obtained by comparing the heat generated and the heat dissipated to obtain the current heat dissipation capacity value. In this embodiment, the current heat dissipation capacity value can be obtained by subtracting the heat dissipated from the heat generated.

[0101] Step S30, obtaining a charging power according to the current heat dissipation capacity value and the preset heat dissipation capacity value, and charging the battery according to the charging power.

[0102] It should be noted that the charging power is determined based on the current heat dissipation capacity of the battery and a preset heat dissipation capacity value, and is used to control the power input during the battery charging process.

[0103] It can be understood that determining the charging power means selecting a corresponding charging power according to a comparison result between a current heat dissipation capacity value and a preset heat dissipation capacity value.

[0104] In a feasible implementation, step S30 may include steps S31 to S33:

[0105] Step S31, obtaining a first preset heat dissipation capacity value, a second preset heat dissipation capacity value, a third preset heat dissipation capacity value and a fourth preset heat dissipation capacity value according to the preset heat dissipation capacity value, wherein the first preset heat dissipation capacity value is less than the second preset heat dissipation capacity value, the second preset heat dissipation capacity value is less than the third preset heat dissipation capacity value, and the third preset heat dissipation capacity value is less than the fourth preset heat dissipation capacity value;

[0106] It should be noted that the preset heat dissipation capacity value is the heat dissipation capacity threshold pre-set during the battery design phase based on the battery material, structure and expected usage conditions, and is used to determine the charging power of the battery under different heat dissipation requirements.

[0107] The first preset heat dissipation capacity value is the minimum heat dissipation capacity value at which the battery can be safely charged. If the actual heat dissipation capacity is lower than this value, the charging power needs to be reduced or charging needs to be suspended to protect the battery.

[0108] The second preset heat dissipation capacity value is a heat dissipation capacity value corresponding to a battery with a heat dissipation capacity below medium, and the third preset heat dissipation capacity value is a heat dissipation capacity value corresponding to a battery with a heat dissipation capacity above medium.

[0109] The fourth preset heat dissipation capacity value is the maximum heat dissipation capacity value at which the battery can be safely charged. Exceeding this value may cause damage to the battery.

[0110] Step S32, obtaining a first charging power, a second charging power, and a third charging power according to at least one of the first preset heat dissipation capability value, the second preset heat dissipation capability value, the third preset heat dissipation capability value, and the fourth preset heat dissipation capability value and the current heat dissipation capability value, wherein the first charging power is greater than the second charging power, and the second charging power is greater than the third charging power;

[0111] It should be noted that the charging power is a charging power determined according to the heat dissipation capacity of the battery, and the first charging power, the second charging power, and the third charging power respectively represent different charging powers.

[0112] In a feasible implementation, step S32 may include steps A321 to A323:

[0113] Step A321, when the current heat dissipation capacity value is greater than the first preset heat dissipation capacity value and less than the second preset heat dissipation capacity value, obtaining a first charging power;

[0114] Step A322, when the current heat dissipation capacity value is greater than the second preset heat dissipation capacity value and less than the third preset heat dissipation capacity value, obtaining a second charging power;

[0115] Step A323, when the current heat dissipation capacity value is greater than the third preset heat dissipation capacity value and less than the fourth preset heat dissipation capacity value, obtain a third charging power.

[0116] It can be understood that steps A321 to A323 represent that when the heat dissipation capacity of the battery is within a specific range, a suitable charging power can be selected for charging. In this embodiment, if the residual heat of the battery is high, low power charging is adopted; if the residual heat of the battery is low, high power charging is adopted, so that the internal temperature of the battery can quickly reach thermal equilibrium and be maintained within the relative temperature range, thereby reducing the thermal shock effect on the battery, thereby protecting the battery and extending its life.

[0117] Step S33: charging the battery according to any one of the first charging power, the second charging power, and the third charging power.

[0118] It is understood that the charging power can be dynamically adjusted according to the real-time heat dissipation capacity of the battery to avoid overheating and optimize charging efficiency. For example, if the heat dissipation capacity of the battery is strong, a higher charging power can be selected to achieve fast charging; if the heat dissipation capacity is weak, the charging power can be reduced to prevent the battery from overheating.

[0119] This embodiment solves the problem of low charging efficiency and battery overheating caused by the inability of existing battery charging strategies to adapt to the heat dissipation requirements of batteries under different states by real-time monitoring of the heat generated by the battery, the heat dissipated, and the preset heat dissipation capacity value, and dynamically calculating the current heat dissipation capacity value based on these parameters. By comparing with the preset heat dissipation capacity value, the appropriate charging power is determined and applied, and the optimal charging strategy under different heat dissipation conditions is implemented, achieving the beneficial effects of improving charging efficiency, protecting the battery from overheating damage, and extending the battery life.

[0120] 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-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 2 Before step S10, the battery charging method further includes steps S01 to S02:

[0121] Step S01, obtaining a first battery temperature, a second battery temperature, a current battery temperature, a first battery power, a second battery power, a current power, a fourth charging power, a fifth charging power, a current charging power, a first battery life, a second battery life, a current battery life, a first preset heat dissipation value, a fourth preset heat dissipation value, and a current heat dissipation capacity value, wherein the first battery temperature is lower than the second battery temperature, the first battery power is lower than the second battery power, the fourth charging power is lower than the fifth charging power, and the first battery life is lower than the second battery life;

[0122] It should be noted that the first battery temperature (Tmin) and the second battery temperature (Tmax) represent the minimum and maximum charging temperatures allowed by the battery, respectively. The battery needs to operate within this temperature range to ensure safety and efficiency. The current battery temperature (T) is the actual measured temperature of the battery at the time of charging.

[0123] In addition, it should be noted that the first battery power (SOCmin) and the second battery power (SOCmax) represent the minimum and maximum charging power states allowed by the battery, respectively. Battery charging should be performed between these two SOC values. The current power (SOC) is the actual power state of the battery at the time of charging.

[0124] It should be noted that the fourth charging power (Pmin) and the fifth charging power (Pmax) represent the minimum and maximum charging powers allowed by the battery, respectively, and the charging power should be adjusted between these two values. The current charging power (P) is the actual charging power of the battery at the time of charging.

[0125] It can be understood that the fourth charging power is less than the first charging power, and the fifth charging power is greater than the first charging power.

[0126] In addition, it should be noted that the first battery life (SOHmin) and the second battery life (SOHmax) respectively represent the lowest and highest thresholds of the battery health state, and the current battery life (SOH) is the actual health state of the battery at the time of charging.

[0127] It should be noted that the first preset heat dissipation value (Qmin) and the fourth preset heat dissipation value (Qmax) represent the minimum and maximum heat dissipation capacity values ​​preset when the battery is designed. The current heat dissipation capacity value (Q) is the heat dissipation capacity value calculated based on the current heat generation and heat dissipation conditions of the battery.

[0128] Step S02: Determine whether the battery can be charged based on the first battery temperature, the second battery temperature, the current battery temperature, the first battery power, the second battery power, the current power, the fourth charging power, the fifth charging power, the current charging power, the first battery life, the second battery life, the current battery life, the first preset heat dissipation value, the fourth preset heat dissipation value, and the current heat dissipation capacity value.

[0129] It can be understood that determining whether the battery can be charged means ensuring that the battery meets all safety conditions before charging, thereby avoiding potential risks during charging, ensuring battery safety, and extending battery life.

[0130] In a feasible implementation manner, step S02 may include steps A021 to A026:

[0131] Step A021: When the first battery temperature is less than the current battery temperature and the current battery temperature is less than the second battery temperature, determine that the battery meets the first charging condition;

[0132] It can be understood that when the battery temperature Tmin < T < Tmax, it is determined that the battery meets the first charging condition.

[0133] Step A022: When the first battery power is less than the current power and the current power is less than the second battery power, determine that the battery meets the second charging condition;

[0134] It can be understood that when the battery power SOCmin < SOC < SOCmax, it is determined that the battery meets the second charging condition;

[0135] Step A023: When the fourth charging power is less than the current charging power and the current charging power is less than the fifth charging power, determine that the battery meets the third charging condition;

[0136] It can be understood that when the battery charging power Pmin < P < Pmax, it is determined that the battery meets the third charging condition;

[0137] Step A024: When the first battery life is less than the current battery life and the current battery life is less than the second battery life, determine that the battery meets the fourth charging condition;

[0138] It can be understood that the battery life needs to be within the effective life, that is, when SOHmin < SOH < SOHmax, it is determined that the battery meets the fourth charging condition;

[0139] Step A025, when the first preset heat dissipation value is less than the current heat dissipation capacity value and the current heat dissipation capacity value is less than the fourth preset heat dissipation value, it is determined that the battery meets the fifth charging condition;

[0140] It can be understood that when the battery heat dissipation capacity Qmin < Q < Qmax, it is determined that the battery meets the fifth charging condition.

[0141] Step A026, when the first charging condition, the second charging condition, the third charging condition, the fourth charging condition, and the fifth charging condition are all met, control the battery to charge.

[0142] It can be understood that when all conditions are met, the battery will be controlled to charge, ensuring that the battery works under safe and efficient conditions, avoiding potential risks during the charging process, ensuring battery safety and extending battery life.

[0143] In this embodiment, by means of real-time monitoring and comprehensive evaluation of key parameters of the battery, including the highest and lowest charging temperatures, power status, charging power, health status, and heat dissipation capacity of the battery, the problem that the traditional charging method cannot fully ensure safe charging of the battery in various states is solved. By setting a series of charging conditions and only allowing the battery to charge when all conditions are met, this embodiment realizes fine control of the battery charging process, achieving the beneficial effects of ensuring battery safety, improving charging efficiency, avoiding potential risks during the charging process, and extending battery service life.

[0144] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the battery charging method of this application. Based on this technical concept, more forms of simple transformations are within the protection scope of this application.

[0145] This application also provides a battery charging device. Please refer to Figure 3 , the battery charging device includes:

[0146] An acquisition module 10, configured to acquire the heat generation amount, heat dissipation amount, and preset heat dissipation capacity value of the battery;

[0147] A obtaining module 20, configured to obtain the current heat dissipation capacity value according to the heat generation amount and the heat dissipation amount;

[0148] A charging module 30, configured to obtain the charging power according to the current heat dissipation capacity value and the preset heat dissipation capacity value, and charge the battery according to the charging power.

[0149] The battery charging device provided by the present application adopts the battery charging method in the above embodiment, which can solve the technical problem in the existing battery charging technology that the charging power cannot be dynamically adjusted according to the real-time heat generation and heat dissipation capacity of the battery. Compared with the prior art, the beneficial effects of the battery charging device provided by the present application are the same as the beneficial effects of the battery charging method provided by the above embodiment, and the other technical features of the battery charging device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0150] The present application provides a battery 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 so that the at least one processor can execute the battery charging method in the above-mentioned embodiment 1.

[0151] Reference below Figure 4 , which shows a schematic diagram of the structure of a battery charging device suitable for implementing an embodiment of the present application. The battery charging device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 4 The battery charging device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0152] like Figure 4As shown, the battery charging device may include a processing device 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the battery charging device are also stored. The processing device 1001, ROM1002, and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the battery charging device to communicate with other devices wirelessly or wired to exchange data. Although the figure shows a battery charging device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems can be implemented or have alternatively.

[0153] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0154] The battery charging device provided by the present application adopts the battery charging method in the above embodiment, which can solve the technical problem that the existing battery charging technology cannot dynamically adjust the charging power according to the real-time heat generation and heat dissipation capacity of the battery. Compared with the prior art, the beneficial effects of the battery charging device provided by the present application are the same as the beneficial effects of the battery charging method provided by the above embodiment, and the other technical features of the battery charging device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0155] It should be understood that the various parts disclosed in this application can be implemented by 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 one or more embodiments or examples in a suitable manner.

[0156] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0157] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the battery charging method in the above-mentioned embodiment.

[0158] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. 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 combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0159] The computer-readable storage medium may be included in the battery charging device; or may exist independently without being assembled into the battery charging device.

[0160] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the battery charging device, the battery charging device: obtains the heat generated by the battery, the heat dissipated by the battery, and a preset heat dissipation capacity value;

[0161] Obtaining a current heat dissipation capacity value according to the heat generated and the heat dissipated;

[0162] A charging power is obtained according to the current heat dissipation capability value and the preset heat dissipation capability value, and the battery is charged according to the charging power.

[0163] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0164] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0165] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0166] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned battery charging method, and can solve the technical problem that the existing battery charging technology cannot dynamically adjust the charging power according to the real-time heat generation and heat dissipation capacity of the battery. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the battery charging method provided by the above-mentioned embodiment, and will not be repeated here.

[0167] The present application also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the steps of the battery charging method as described above are implemented.

[0168] The computer program product provided by the present application can solve the technical problem in the existing battery charging technology that the charging power cannot be dynamically adjusted according to the real-time heat generation and heat dissipation capacity of the battery. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the battery charging method provided by the above embodiment, and will not be repeated here.

[0169] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A battery charging method, characterized in that: The method comprises: Obtain the heat generated by the battery, the heat dissipated, and the preset heat dissipation capacity value; Obtaining a current heat dissipation capacity value according to the heat generated and the heat dissipated; A charging power is obtained according to the current heat dissipation capability value and the preset heat dissipation capability value, and the battery is charged according to the charging power.

2. The method according to claim 1, characterized in that The step of obtaining the heat generated by the battery and the heat dissipated by the battery comprises: Obtain the current voltage, current current, continuous charging time, total battery capacity, current battery capacity, coolant flow rate, cooling water pipe diameter, cooling water pipe outlet temperature, and cooling water pipe inlet temperature of the battery; Obtaining a value of a change in power within the continuous charging time according to the continuous charging time and the current power; Obtaining a cooling water pipe inlet and outlet temperature difference according to the cooling water pipe outlet temperature and the cooling water pipe inlet temperature; The heat generated and the heat dissipated are obtained according to at least one of the current voltage, the current current, the continuous charging time, the total power, the coolant flow rate, the cooling water pipe diameter, the cooling water pipe inlet and outlet temperature difference, and the power change value.

3. The method according to claim 2, characterized in that The step of obtaining heat generation and heat dissipation according to at least one of the current voltage, the current current, the continuous charging time, the total power, the coolant flow rate, the cooling water pipe diameter, the cooling water pipe inlet and outlet temperature difference, and the power change value comprises: Obtaining heat generation amount according to the current voltage, the current current, the continuous charging time, the total power and the power change value; The heat dissipation amount is obtained according to the coolant flow rate, the cooling water pipe diameter, the continuous charging time and the cooling water pipe temperature difference.

4. The method according to claim 1, characterized in that The step of obtaining a charging power according to the current heat dissipation capacity value and the preset heat dissipation capacity value, and charging the battery according to the charging power comprises: A first preset heat dissipation capacity value, a second preset heat dissipation capacity value, a third preset heat dissipation capacity value and a fourth preset heat dissipation capacity value are obtained according to the preset heat dissipation capacity value, wherein the first preset heat dissipation capacity value is less than the second preset heat dissipation capacity value, the second preset heat dissipation capacity value is less than the third preset heat dissipation capacity value, and the third preset heat dissipation capacity value is less than the fourth preset heat dissipation capacity value; obtaining a first charging power, a second charging power, and a third charging power according to at least one of the first preset heat dissipation capability value, the second preset heat dissipation capability value, the third preset heat dissipation capability value, and the fourth preset heat dissipation capability value and the current heat dissipation capability value, wherein the first charging power is greater than the second charging power, and the second charging power is greater than the third charging power; The battery is charged according to any one of the first charging power, the second charging power, and the third charging power.

5. The method according to claim 4, characterized in that The step of obtaining the first charging power, the second charging power and the third charging power according to at least one of the first preset heat dissipation capacity value, the second preset heat dissipation capacity value, the third preset heat dissipation capacity value and the fourth preset heat dissipation capacity value and the preset heat dissipation capacity value comprises: When the current heat dissipation capacity value is greater than the first preset heat dissipation capacity value and less than the second preset heat dissipation capacity value, obtaining a first charging power; When the current heat dissipation capacity value is greater than the second preset heat dissipation capacity value and less than the third preset heat dissipation capacity value, obtaining a second charging power; When the current heat dissipation capability value is greater than the third preset heat dissipation capability value and less than the fourth preset heat dissipation capability value, a third charging power is obtained.

6. The method according to claim 1, characterized in that Before the step of obtaining the heat generated by the battery, the heat dissipated, and the preset heat dissipation capacity value, the following steps are further included: Acquire a first battery temperature, a second battery temperature, a current battery temperature, a first battery power, a second battery power, a current power, a fourth charging power, a fifth charging power, a current charging power, a first battery life, a second battery life, a current battery life, a first preset heat dissipation value, a fourth preset heat dissipation value, and a current heat dissipation capacity value, wherein the first battery temperature is lower than the second battery temperature, the first battery power is lower than the second battery power, the fourth charging power is lower than the fifth charging power, and the first battery life is lower than the second battery life; Determine whether the battery can be charged based on the first battery temperature, the second battery temperature, the current battery temperature, the first battery power, the second battery power, the current power, the fourth charging power, the fifth charging power, the current charging power, the first battery life, the second battery life, the current battery life, the first preset heat dissipation value, the fourth preset heat dissipation value and the current heat dissipation capacity value.

7. The method according to claim 6, characterized in that The step of determining whether the battery can be charged according to the first battery temperature, the second battery temperature, the current battery temperature, the first battery power, the second battery power, the current power, the fourth charging power, the fifth charging power, the current charging power, the first battery life, the second battery life, the current battery life, the first preset heat dissipation value, the fourth preset heat dissipation value, and the current heat dissipation capacity value comprises: When the first battery temperature is lower than the current battery temperature and the current battery temperature is lower than the second battery temperature, determining that the battery meets a first charging condition; When the first battery power is less than the current power and the current power is less than the second battery power, determining that the battery meets a second charging condition; When the fourth charging power is less than the current charging power and the current charging power is less than the fifth charging power, determining that the battery meets a third charging condition; When the first battery life is less than the current battery life and the current battery life is less than the second battery life, determining that the battery meets a fourth charging condition; When the first preset heat dissipation value is less than the current heat dissipation capacity value and the current heat dissipation capacity value is less than the fourth preset heat dissipation value, determining that the battery meets the fifth charging condition; When the first charging condition, the second charging condition, the third charging condition, the fourth charging condition, and the fifth charging condition are all satisfied, the battery is controlled to be charged.

8. A battery charging device, characterized in that: The device comprises: An acquisition module is used to obtain the heat generated by the battery, the heat dissipated, and a preset heat dissipation capacity value; An obtaining module, used for obtaining a current heat dissipation capacity value according to the heat generated and the heat dissipated; A charging module is used to obtain a charging power according to the current heat dissipation capacity value and the preset heat dissipation capacity value, and to charge the battery according to the charging power.

9. A battery charging device, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the battery charging method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the battery charging method according to any one of claims 1 to 7 are implemented.

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