Battery charging management control method and device, electronic equipment and storage medium

Abstract

The invention provides a battery charging management control method and device, electronic equipment and a storage medium, and is suitable for the technical field of batteries, and the method comprises the steps: firstly determining the current battery state of a battery, and then determining the current fast charging state type of the battery from a battery fast charging rate table according to the current battery state, the battery fast charging rate table comprises a plurality of different charging state types, and the charging state types are related to the charging progress value of the battery and the temperature of the battery; and finally, adjusting the current temperature of the battery according to the current charging state type so as to control the current charging rate of the battery. When the battery is rapidly charged, the corresponding battery thermal management control strategy can be executed according to the determined charging state type, the battery temperature is actively controlled, the battery temperature follows the optimal rapid charging rate, the situation that the battery is rapidly charged into a low rate interval is avoided, the battery rapid charging time is effectively shortened, and the use experience of a user is improved.

Description

Technical Field

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

[0002] With the rapid development and widespread application of new energy batteries, controlling batteries in a fast-charging state by mastering the internal information of the batteries is a very important technology in the industry.

[0003] The current conventional practice is to calculate whether the battery needs cooling or heating based on variables such as the battery's real-time ambient temperature, real-time battery temperature, and SOC. For most conventional battery thermal management control methods, the battery's target temperature value is fixed when heating or cooling. The control method is simple and easy to implement, but it does not fully consider that the fast charging rate in the battery fast charging rate table will change due to the influence of battery temperature and battery SOC. This will cause the battery fast charging rate to not always be in the optimal rate range, which will affect the charging efficiency of new energy batteries. Summary of the invention

[0004] The embodiments of the present application provide a battery charging management control method, device, electronic device and storage medium, which can solve the technical problem that the battery charging efficiency is low because the fast charging rate of the battery cannot always be maintained in the current optimal rate range during fast charging of the current new energy battery;

[0005] In a first aspect, an embodiment of the present application provides a battery charging management control method, comprising:

[0006] Determining a current battery state of the battery, the current battery state comprising a current temperature and a current charging progress value;

[0007] Determining a current fast charging state type of the battery from a battery fast charging rate table according to the current battery state, wherein the battery fast charging rate table includes a plurality of different charging state types, and the charging state type is related to a charging progress value of the battery and a battery temperature;

[0008] The current temperature of the battery is adjusted according to the current charging state type to control the current charging rate of the battery.

[0009] In the embodiment of the present application, when the battery is fast charged, the battery temperature is actively controlled so that the battery temperature follows the optimal fast charge rate, thereby preventing the battery from entering a lower rate range during fast charging, thereby effectively shortening the battery fast charging time and improving the user experience.

[0010] In some embodiments, determining the current fast charge state type of the battery from a battery fast charge rate table according to the current battery state includes:

[0011] Based on the current charging progress value, the target charging rates of at least two charging progress intervals related to the current charging progress value under different temperature conditions are queried from the battery fast charging rate table, and the current fast charging state type of the battery is determined based on the target charging rate.

[0012] In the embodiment of the present application, when the battery is fast charged, the battery temperature is controlled according to the data related to the current charging progress value in the battery fast charge rate table, so that the current charging rate of the battery can be effectively controlled to reach the optimal fast charge rate.

[0013] In some embodiments, the battery fast charge rate table includes a corresponding relationship between battery temperature and charge rate at different charging progress values, and the target charge rate includes a current charge rate and an adjacent charge rate;

[0014] The method of querying, based on the current charging progress value, target charging rates of at least two charging progress intervals related to the current charging progress value under different temperature conditions from a battery fast charging rate table, and determining the current fast charging state type of the battery based on the target charging rate, includes:

[0015] According to the corresponding relationship, obtaining a current charging rate corresponding to a current charging area where the current battery state is located;

[0016] According to the corresponding relationship, an adjacent charging rate corresponding to an adjacent area is obtained, wherein the adjacent area is an area adjacent to the current charging area in a temperature dimension and / or a charging progress dimension;

[0017] The current charging rate is compared with the adjacent charging rate to determine the current fast charging state type of the battery.

[0018] In an embodiment of the present application, by comparing the current charging rate of the battery with the adjacent charging rates in the temperature dimension and / or the charging progress dimension, the current fast charging state type of the battery can be accurately determined, which in turn helps to adopt an appropriate and correct battery thermal management control strategy.

[0019] In some embodiments, determining the current battery status of the battery includes:

[0020] Obtaining a current temperature of the battery and determining a historical temperature of the battery;

[0021] Determine a temperature change trend of the battery according to the current temperature and the historical temperature of the battery;

[0022] The acquiring, according to the corresponding relationship, adjacent charging rates corresponding to adjacent areas includes:

[0023] Adjacent charging rates corresponding to adjacent areas are obtained according to the temperature change trend and the corresponding relationship.

[0024] In an embodiment of the present application, the temperature change trend of the current battery state of the battery is determined to further accurately judge the current fast charging state type of the battery, which can help to accurately adopt a suitable and correct battery thermal management control strategy.

[0025] In some embodiments, the current charging region is composed of a current temperature interval and a current charging progress interval;

[0026] Wherein, when the temperature change trend is a temperature rising trend, acquiring adjacent charging rates corresponding to adjacent areas according to the temperature change trend and the corresponding relationship includes:

[0027] Determine a first charging progress interval adjacent to the current charging progress interval in a direction in which the charging progress value increases, and determine a first temperature interval adjacent to the current temperature interval in a direction in which the temperature value increases;

[0028] According to the corresponding relationship, a first adjacent charging rate corresponding to the first adjacent area is obtained, where the first adjacent area consists of a first temperature interval and the current charging progress interval;

[0029] According to the corresponding relationship, a second adjacent charging rate corresponding to the second adjacent area is obtained, where the second adjacent area is composed of the current temperature interval and the first charging progress interval;

[0030] According to the corresponding relationship, a third adjacent charging rate corresponding to a third adjacent region is acquired, where the third adjacent region is composed of the first temperature interval and the first charging progress interval;

[0031] The comparing the current charging rate with the adjacent charging rate to determine the current fast charging state type of the battery includes:

[0032] Comparing the current charging rate with the first adjacent charging rate to obtain a first rate comparison result;

[0033] Comparing the current charging rate with the second adjacent charging rate to obtain a second rate comparison result;

[0034] Comparing the current charging rate with the third adjacent charging rate to obtain a third rate comparison result;

[0035] Based on the first rate comparison result, the second rate comparison result and the third rate comparison result, a current fast charging state type of the battery is determined.

[0036] In an embodiment of the present application, when the temperature change trend of the battery is an upward trend, the current charging rate is compared with the adjacent charging rates corresponding to the three adjacent areas, and the current fast charging state type of the battery is further accurately judged based on the three comparison results, which can help to accurately adopt appropriate and correct battery thermal management control strategies when the battery is in a rising temperature trend.

[0037] In some embodiments, determining the current fast charging state type of the battery based on the first rate comparison result, the second rate comparison result, and the third rate comparison result includes:

[0038] If the first rate comparison result is that the current charging rate is less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is less than the third adjacent charging rate, it is determined that the current fast charging state type of the battery is the first state type;

[0039] The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes:

[0040] When it is determined that the current fast charging state type of the battery is the first state type, the current temperature of the battery is adjusted to the maximum temperature value of the current temperature range by turning on the battery heating function, so that the inlet water temperature of the battery reaches the first target heating value, thereby increasing the current charging rate of the battery.

[0041] In an embodiment of the present application, when the battery is in an upward temperature trend, the current charging rate of the battery is compared with the adjacent charging rates corresponding to the three adjacent areas. If it is determined that the battery is currently in the first state type, indicating that the current charging rate is relatively low, the battery can be heated to increase the current charging rate of the battery, thereby ensuring that the fast charging of the battery is in an optimal fast charging rate range when the temperature rises.

[0042] In some embodiments, determining the current fast charging state type of the battery based on the first rate comparison result, the second rate comparison result, and the third rate comparison result includes:

[0043] When the first rate comparison result is that the current charging rate is not less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is not less than the third adjacent charging rate, determining that the current fast charging state type of the battery is the second state type, and not turning on the battery heating function or the battery cooling function;

[0044] or

[0045] When the first rate comparison result is that the current charging rate is less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is not less than the third adjacent charging rate, determining that the current fast charging state type of the battery is the eighth state type, and not turning on the battery heating function or the battery cooling function;

[0046] In an embodiment of the present application, when the battery is in a trend of rising temperature, the current charging rate of the battery is compared with the adjacent charging rates corresponding to the three adjacent areas. If it is determined that the battery is currently in the second state type or the eighth state type, it means that the battery is currently in a better charging rate range, so it should be maintained.

[0047] In some embodiments, determining the current fast charging state type of the battery based on the first rate comparison result, the second rate comparison result, and the third rate comparison result includes:

[0048] If the first rate comparison result is that the current charging rate is less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is less than the third adjacent charging rate, then it is determined that the current fast charging state type of the battery is the third state type;

[0049] The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes:

[0050] When it is determined that the current fast charging state type of the battery is the third state type, the current temperature of the battery is adjusted to the maximum temperature value of the first temperature range by turning on the battery heating function, so that the inlet water temperature of the battery reaches the second target heating value, thereby increasing the current charging rate of the battery.

[0051] In an embodiment of the present application, when the battery is in an upward temperature trend, if it is determined that the battery is currently in the third state type, indicating that the current charging rate is relatively low, the battery can be heated to increase the current charging rate of the battery, thereby ensuring that the fast charging of the battery is in an optimal fast charging rate range when the temperature rises.

[0052] In some embodiments, determining the current fast charging state type of the battery based on the first rate comparison result, the second rate comparison result, and the third rate comparison result includes:

[0053] If the first rate comparison result is that the current charging rate is less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is not less than the third adjacent charging rate, then it is determined that the current fast charging state type of the battery is the fourth state type;

[0054] The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes:

[0055] When it is determined that the current fast charging state type of the battery is the fourth state type, obtaining a battery self-heating rate of the battery, and calculating an estimated battery temperature corresponding to when the maximum charging critical value of the current charging area is reached according to the battery self-heating rate;

[0056] Determine whether the estimated battery temperature is greater than the maximum temperature value of the current temperature range. If so, adjust the current temperature of the battery to the minimum temperature value of the current temperature range by turning on the battery cooling function so that the inlet water temperature of the battery reaches the first target cooling value to control the current charging rate of the battery.

[0057] In an embodiment of the present application, when the battery is in an upward temperature trend, the current charging rate of the battery is compared with the adjacent charging rates corresponding to the three adjacent areas. If it is determined that the battery is currently in the fourth fast charging state, it means that the temperature of the battery is relatively high at this time. The current charging temperature of the battery can be lowered by cooling to ensure the charging quality of the battery.

[0058] In one embodiment, determining the current fast charging state type of the battery based on the first rate comparison result, the second rate comparison result, and the third rate comparison result includes:

[0059] If the first rate comparison result is that the current charging rate is not less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is less than the third adjacent charging rate, then it is determined that the current fast charging state type of the battery is the fifth state type;

[0060] The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes:

[0061] When it is determined that the current fast charging state type of the battery is the fifth state type, obtaining a battery self-heating rate of the battery, and calculating an estimated battery temperature corresponding to a maximum charging critical value of the current charging area when the battery self-heating rate reaches the maximum charging critical value of the current charging area;

[0062] Determine whether the estimated battery temperature is greater than the maximum temperature value of the current temperature range. If so, turn on the battery cooling function to cool the current temperature of the battery so that the inlet water temperature of the battery reaches a first target cooling value to control the current charging rate of the battery.

[0063] In an embodiment of the present application, when the battery is in a rising temperature trend, if it is determined that the battery is currently in the fifth fast charging state, the estimated battery temperature is calculated based on the battery self-heating rate of the battery. When the estimated battery temperature is greater than the maximum temperature of the current temperature range, it means that the battery temperature is high at this time. In this way, the current charging temperature of the battery is lowered by cooling to further ensure the battery charging quality.

[0064] In one embodiment, after the step of determining whether the estimated battery temperature is greater than the maximum temperature value of the current temperature range, and if so, turning on the battery cooling function to cool the current temperature of the battery so that the inlet water temperature of the battery reaches a first target cooling value to control the current charging rate of the battery, the method further includes:

[0065] Detecting whether a battery temperature rise rate of the battery is within a first preset temperature rise rate range at a preset time interval;

[0066] If the battery temperature rise rate is within the first preset temperature rise rate range, then the inlet water temperature of the battery continues to be cooled based on the first target cooling value;

[0067] If the battery temperature rise rate is not within a preset temperature rise rate range, the battery cooling function is turned on to cool the current temperature of the battery so that the inlet water temperature of the battery reaches a second target cooling value, wherein the second target cooling value is less than the first target cooling value.

[0068] In this embodiment, when the battery is in a temperature rising trend and is in the fifth fast charging state, the battery temperature rise rate is detected in real time, and different degrees of cooling and cooling treatment are performed on the battery according to different battery temperature rise rate detection results, which can reasonably ensure the battery charging safety and charging efficiency.

[0069] In one embodiment, determining the current fast charging state type of the battery based on the first rate comparison result, the second rate comparison result, and the third rate comparison result includes:

[0070] If the first rate comparison result is that the current charging rate is not less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is not less than the third adjacent charging rate, it is determined that the current fast charging state type of the battery is the sixth state type;

[0071] The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes:

[0072] When it is determined that the current fast charging state type of the battery is the sixth state type, obtaining a battery self-heating rate of the battery, and calculating an estimated battery temperature corresponding to when the maximum charging critical value of the current charging area is reached according to the battery self-heating rate;

[0073] Determine whether the estimated battery temperature is greater than the maximum temperature value of the current temperature range; if so, cool the current temperature of the battery by turning on the battery cooling function so that the inlet water temperature of the battery reaches a first target cooling value to control the current charging rate of the battery.

[0074] In an embodiment of the present application, when the battery is in an upward temperature trend and is currently in the sixth fast charging state, the estimated battery temperature is calculated based on the battery self-heating rate of the battery. When the estimated battery temperature is greater than the maximum temperature of the current temperature range, it means that the battery temperature is high at this time. In this way, the current charging temperature of the battery is lowered by cooling to further ensure the battery charging quality.

[0075] In one embodiment, determining the current fast charging state type of the battery based on the first rate comparison result, the second rate comparison result, and the third rate comparison result includes:

[0076] If the first rate comparison result is that the current charging rate is not less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is less than the third adjacent charging rate, it is determined that the current fast charging state type of the battery is the seventh state type;

[0077] The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes:

[0078] When it is determined that the current fast charging state type of the battery is the seventh state type, the current temperature of the battery is adjusted to the maximum temperature value of the current temperature range by turning on the battery heating function, so that the inlet water temperature of the battery reaches the first target heating value;

[0079] Detecting whether a battery temperature rise rate of the battery is within a second preset temperature rise rate range at a preset time interval;

[0080] If the battery temperature rise rate is within the second preset temperature rise rate range, the inlet water temperature of the battery is maintained at a first target heating value.

[0081] If the battery temperature rise rate is not within the second preset temperature rise rate range, detecting whether the battery temperature rise rate of the battery is less than a minimum value within the second preset temperature rise rate range at a preset time interval;

[0082] If the battery temperature rise rate is less than the minimum value of the second preset temperature rise rate range, the current temperature of the battery is adjusted to the maximum temperature value of the current temperature range by turning on the battery heating function, and the inlet water temperature of the battery reaches a second target heating value, wherein the second target heating value is greater than the first target heating value;

[0083] If the battery temperature rise rate is not less than the minimum value of the second preset temperature rise rate range, the current temperature of the battery is adjusted to the maximum temperature value of the current temperature range by turning on the battery heating function, and the inlet water temperature of the battery reaches a third target heating value, wherein the third target heating value is less than the first target heating value.

[0084] In this embodiment, when the battery is in a temperature rising trend and is in the seventh fast charging state, the battery temperature rise rate is detected in real time, and different degrees of heating and temperature rise treatment are performed on the battery according to different battery temperature rise rate detection results, which can effectively improve the battery charging efficiency.

[0085] In one embodiment, the current charging area is composed of a current temperature interval and a current charging progress interval;

[0086] Wherein, when the temperature change trend is a temperature decreasing trend, acquiring adjacent charging rates corresponding to adjacent areas according to the temperature change trend and the corresponding relationship includes:

[0087] Determine a first charging progress interval adjacent to the current charging progress interval in an increasing direction of the charging progress value, and determine a fourth temperature interval adjacent to the current temperature interval in a decreasing direction of the temperature value;

[0088] According to the corresponding relationship, a fourth adjacent charging rate corresponding to a fourth adjacent area is obtained, where the fourth adjacent area is composed of a fourth temperature interval and the current charging progress interval;

[0089] According to the corresponding relationship, a second adjacent charging rate corresponding to the second adjacent area is obtained, where the second adjacent area is composed of the current temperature interval and the first charging progress interval;

[0090] According to the corresponding relationship, a fifth adjacent charging rate corresponding to a fifth adjacent area is obtained, where the fifth adjacent area is composed of a fourth temperature interval and the first charging progress interval;

[0091] The comparing the current charging rate with the adjacent charging rate to determine the current charging state type of the battery includes:

[0092] Comparing the current charging rate with the fourth adjacent charging rate to obtain a fourth rate comparison result;

[0093] Comparing the current charging rate with the second adjacent charging rate to obtain a second rate comparison result;

[0094] Comparing the current charging rate with the fifth adjacent charging rate to obtain a fifth rate comparison result;

[0095] Based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result, a current state of charge type of the battery is determined.

[0096] In an embodiment of the present application, when the temperature change trend of the battery is a downward trend, the current charging rate is compared with the adjacent charging rates corresponding to the three adjacent areas, and the current charging state type of the battery is further accurately judged based on the three comparison results, which can help to accurately adopt a suitable and correct battery thermal management control strategy when the battery is in a downward trend in temperature.

[0097] In one embodiment, determining the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result includes:

[0098] If the fourth rate comparison result is that the current charging rate is less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is less than the fifth adjacent charging rate, then the current charging state type of the battery is determined to be a ninth state type;

[0099] The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes:

[0100] When it is determined that the current charging state type of the battery is the ninth state type, the current temperature of the battery is adjusted to the minimum temperature value of the current temperature range by turning on the battery cooling function, so that the inlet water temperature of the battery reaches the first target cooling value, so as to increase the current charging rate of the battery.

[0101] In an embodiment of the present application, when the battery is in a downward temperature trend, the current charging rate of the battery is compared with the adjacent charging rates corresponding to the three adjacent areas. If it is determined that the battery is currently in the ninth state type, indicating that the temperature of the battery is relatively high, the battery can be cooled to ensure the stability of the current charging rate of the battery.

[0102] In one embodiment, determining the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result includes:

[0103] When the fourth rate comparison result is that the current charging rate is not less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is not less than the fifth adjacent charging rate, determining that the current charging state type of the battery is the tenth state type, and not turning on the battery heating function or the battery cooling function;

[0104] or

[0105] When the fourth rate comparison result is that the current charging rate is less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is not less than the fifth adjacent charging rate, it is determined that the current fast charging state type of the battery is the sixteenth state type, and the battery heating function or the battery cooling function is not turned on.

[0106] In an embodiment of the present application, when the battery is in a downward temperature trend, the current charging rate of the battery is compared with the adjacent charging rates corresponding to the three adjacent areas. If it is determined that the battery is currently in the tenth state type or the sixteenth state type, it means that the current charging rate is in a better charging rate range, so it is maintained.

[0107] In one embodiment, determining the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result includes:

[0108] If the fourth rate comparison result is that the current charging rate is less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is less than the fifth adjacent charging rate, then it is determined that the current charging state type of the battery is the eleventh state type;

[0109] The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes:

[0110] When it is determined that the current charging state type of the battery is the eleventh state type, the current temperature of the battery is adjusted to the minimum temperature value of the fourth temperature range by turning on the battery cooling function, so that the inlet water temperature of the battery reaches the second target cooling value to control the current charging rate of the battery.

[0111] In an embodiment of the present application, when the battery is in a downward temperature trend, the current charging rate of the battery is compared with the adjacent charging rates corresponding to the three adjacent areas. If it is determined that the battery is currently in the ninth state type, indicating that the temperature of the battery is relatively high, the battery can be cooled to ensure the stability of the current charging rate of the battery.

[0112] In one embodiment, determining the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result includes:

[0113] If the fourth rate comparison result is that the current charging rate is less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is not less than the fifth adjacent charging rate, then determining that the current charging state type of the battery is the twelfth state type;

[0114] The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes:

[0115] When it is determined that the current charging state type of the battery is the twelfth state type, obtaining a battery spontaneous heat dissipation rate of the battery, and calculating an estimated battery temperature corresponding to when the maximum charging critical value of the current charging area is reached according to the battery spontaneous heat dissipation rate;

[0116] Determine whether the estimated battery temperature is less than the minimum temperature value of the current temperature range. If so, adjust the current temperature of the battery to the maximum temperature value of the current temperature range by turning on the battery heating function so that the inlet water temperature of the battery reaches the first target heating value to increase the current charging rate of the battery.

[0117] In the embodiment of the present application, when the battery is in a downward temperature trend and the battery is currently in the fourth charging state, the battery can be further placed in an optimal fast charging rate range by heating the battery.

[0118] In one embodiment, determining the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result includes:

[0119] If the fourth rate comparison result is that the current charging rate is not less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is less than the fifth adjacent charging rate, then it is determined that the current charging state type of the battery is the thirteenth state type;

[0120] The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes:

[0121] When it is determined that the current charging state type of the battery is the thirteenth state type, obtaining a battery spontaneous heat dissipation rate of the battery, and calculating an estimated battery temperature corresponding to a maximum charging critical value of the current charging area according to the battery spontaneous heat dissipation rate;

[0122] Determine whether the estimated battery temperature is lower than the minimum temperature value of the current temperature range. If so, turn on the battery heating function to increase the current temperature of the battery so that the inlet water temperature of the battery reaches the first target heating value to increase the current charging rate of the battery.

[0123] In an embodiment of the present application, when the battery is in a downward temperature trend and the battery is currently in the thirteenth state type, the estimated battery temperature is calculated based on the battery self-heating rate of the battery. When the estimated battery temperature is lower than the minimum temperature of the current temperature range, it indicates that the battery temperature at this time is relatively low. The battery can be further placed in an optimal fast charging rate range by heating the battery.

[0124] In one embodiment, after the step of determining whether the estimated battery temperature is lower than the minimum temperature value of the current temperature range, and if so, turning on the battery heating function to raise the current temperature of the battery so that the inlet water temperature of the battery reaches the first target heating value to control the current charging rate of the battery, the method further includes:

[0125] Detecting whether a battery temperature drop rate of the battery is within a first preset temperature drop rate range at a preset time interval;

[0126] If the battery temperature drop rate is within the first preset temperature drop rate range, the inlet water temperature of the battery will continue to be increased based on the first target heating value;

[0127] If the battery temperature drop rate is not within a preset temperature drop rate range, the battery heating function is turned on to increase the current temperature of the battery so that the inlet water temperature of the battery reaches a second target heating value, wherein the second target heating value is greater than the first target heating value.

[0128] In an embodiment of the present application, when the battery is in a temperature decreasing trend and the battery is currently in the thirteenth state type, the temperature drop rate is detected in real time, and different degrees of heating treatment are performed on the battery according to different battery temperature drop rate detection results, so that it can be further in an optimal fast charging rate range.

[0129] In one embodiment, determining the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result includes:

[0130] If the fourth rate comparison result is that the current charging rate is not less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is not less than the fifth adjacent charging rate, then determining that the current charging state type of the battery is the fourteenth state type;

[0131] The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes:

[0132] When it is determined that the current charging state type of the battery is the twelfth state type, obtaining a battery spontaneous heat dissipation rate of the battery, and calculating an estimated battery temperature corresponding to when the maximum charging critical value of the current charging area is reached according to the battery spontaneous heat dissipation rate;

[0133] Determine whether the estimated battery temperature is less than the minimum temperature value of the current temperature range. If so, turn on the battery heating function to increase the current temperature of the battery so that the inlet water temperature of the battery reaches the first target heating value to increase the current charging rate of the battery.

[0134] In an embodiment of the present application, when the battery is in a downward trend in temperature and is currently in the sixth fast charging state, the estimated battery temperature is calculated based on the battery self-heating rate of the battery. When the estimated battery temperature is not greater than the maximum temperature of the current temperature range, it indicates that the battery temperature at this time is relatively low. In this way, the battery charging rate is increased by increasing the current charging temperature of the battery.

[0135] In one embodiment, determining the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result includes:

[0136] If the fourth rate comparison result is that the current charging rate is not less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is less than the fifth adjacent charging rate, then it is determined that the current charging state type of the battery is the fifteenth state type;

[0137] The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes:

[0138] When it is determined that the current charging state type of the battery is a ninth state type, the current temperature of the battery is adjusted to a minimum temperature value of the current temperature range by turning on a battery cooling function so that the inlet water temperature of the battery reaches a first target cooling value, so as to control the current charging rate of the battery;

[0139] Detecting whether a battery temperature drop rate of the battery is within a second preset temperature drop rate range at a preset time interval;

[0140] If the battery temperature drop rate is within the second preset temperature drop rate range, the inlet water temperature of the battery is maintained at a first target cooling value.

[0141] In this embodiment, when the battery is in a temperature decreasing trend and is in the seventh fast charging state, the battery temperature drop rate is detected in real time, and different degrees of cooling treatment are performed on the battery according to different battery temperature drop rate detection results to ensure stable battery charging.

[0142] If the battery temperature drop rate is not within the second preset temperature drop rate range, detecting whether the battery temperature drop rate of the battery is less than a minimum value within the second preset temperature drop rate range at a preset time interval;

[0143] If the battery temperature drop rate is less than the minimum value of the second preset temperature drop rate range, the current temperature of the battery is adjusted to the minimum temperature value of the current temperature range by turning on the battery cooling function, and the inlet water temperature of the battery is reduced to a second target cooling value, wherein the second target cooling zone value is less than the first target cooling value;

[0144] If the battery temperature drop rate is not less than the minimum value of the second preset temperature drop rate range, the current temperature of the battery is adjusted to the minimum temperature value of the current temperature range by turning on the battery cooling function, and the inlet water temperature of the battery reaches a third target cooling value, wherein the third target cooling value is greater than the first target cooling value.

[0145] By detecting the battery temperature rise rate in real time when the battery is in a temperature decreasing trend and is in the seventh charging state, and performing different degrees of cooling treatment on the battery according to different battery temperature decrease rate detection results, the stability and quality of battery fast charging can be effectively guaranteed.

[0146] In a second aspect, the present application further proposes a battery charging management control device, comprising:

[0147] an acquisition unit, configured to determine a current battery state of the battery, wherein the current battery state includes a current temperature and a current charging progress value;

[0148] a determination unit, configured to determine a current fast charging state type of the battery from the battery fast charging rate table according to the current battery state, the battery fast charging rate table including a plurality of different charging state types, the charging state type being related to a charging progress value of the battery and a battery temperature;

[0149] A control unit is used to adjust the current temperature of the battery according to the current charging state type to control the current charging rate of the battery.

[0150] In a third aspect, the present application further proposes an electronic device, comprising a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the method described in the first aspect when executing the computer program.

[0151] In a fourth aspect, the present application further proposes a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in the first aspect above is implemented.

[0152] It can be understood that the beneficial effects of the second to fourth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0153] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0154] Figure 1 This is a flow chart of the first embodiment of the battery charging management control method of the present application;

[0155] Figure 2 A function coordinate chart for indicating the battery status provided in the first embodiment of the present application;

[0156] Figure 3 This is a flow chart of Embodiment 2 of the battery charging management control method of the present application;

[0157] Figure 4 A function coordinate chart for representing the battery state provided in the third embodiment of the battery charging management control method of the present application;

[0158] Figure 5 This is a flowchart of a third embodiment of the battery charging management control method of the present application;

[0159] Figure 6 A function coordinate chart for representing the battery state provided in the fourth embodiment of the battery charging management control method of the present application;

[0160] Figure 7 This is a flowchart of a fourth embodiment of the battery charging management control method of the present application;

[0161] Figure 8 A schematic diagram of the structure of an electronic device provided in this application;

[0162] Fig. 9 It is a structural block diagram of the battery charging management control device provided in this application. DETAILED DESCRIPTION

[0163] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0164] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0165] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0166] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two), unless otherwise clearly and specifically defined.

[0167] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0168] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0169] The inventors of this application noticed that the current conventional temperature control method for battery fast charging is mainly based on variables such as the battery's real-time ambient temperature, real-time battery temperature, SOC, etc. to calculate whether the battery needs cooling or heating. For most conventional battery thermal management control methods, the target temperature value of the battery is fixed when heating or cooling. The control method is simple and easy to implement, but it does not fully consider that the fast charging rate in the battery fast charging rate table will change due to the influence of battery temperature and battery SOC. This will cause the battery fast charging rate to not always be in the optimal rate range, which will affect the charging efficiency of the new energy battery.

[0170] Based on the above considerations, in order to address the problem that the fast charging rate of the current battery cannot always be maintained in the current optimal rate range during fast charging, the inventors have conducted in-depth research and proposed a battery charging management control method, device, electronic device and storage medium, which can actively control the battery temperature during battery fast charging, so that the battery temperature follows the optimal fast charging rate, avoiding the battery fast charging from entering a lower rate range, thereby effectively shortening the battery fast charging time and improving the user experience when using the battery.

[0171] In order to illustrate the technical solution proposed in the embodiments of the present application, a specific embodiment is provided below for illustration.

[0172] Embodiment 1

[0173] See also Figure 1 , Figure 1 This is a flow chart of a first embodiment of a battery charging management control method provided by the present application. The battery charging management control method in the embodiment of the present application can be applied to a thermal management controller (thermal management controller unit) at the vehicle end. The battery charging management control method includes:

[0174] Step S10, determining the current battery state of the battery.

[0175] Specifically, the execution subject of this embodiment is a thermal management controller, and the current battery state includes a current temperature and a current charging progress value;

[0176] The current charging progress value may be a progress value of the current remaining power (State Of Charge, SOC) of the battery, or may be a progress value of the current voltage of the battery;

[0177] It is understandable that the charging progress value in the present application can be either the remaining power SOC of the battery or the voltage of the battery, and there is a linear relationship between the two (the more the remaining power SOC, the higher the battery voltage; the less the remaining power SOC, the lower the battery voltage), and both can represent the charging progress value of the battery; this embodiment takes the remaining power as the charging progress value of the battery as an example for explanation.

[0178] Step S20, determining the current fast charging state type of the battery from the battery fast charging rate table according to the current battery state, the battery fast charging rate table including a plurality of different charging state types, and the charging state type is related to the charging progress value of the battery and the battery temperature;

[0179] In a specific implementation, the thermal management controller reads the "battery fast charge rate table" of the corresponding battery pack according to the information configured by the vehicle battery pack. The thermal management controller can query the target charge rates of at least two charging progress intervals related to the current charging progress value under different temperature conditions from the battery fast charge rate table based on the current charging progress value, and determine the current fast charge state type of the battery based on the target charge rate;

[0180] The battery fast charge rate table includes the corresponding relationship between the battery temperature and the charge rate at different charging progress values;

[0181] refer to Figure 2 , Figure 2 is a function coordinate chart for representing the current battery state, in which the abscissa represents the battery temperature T, and the ordinate represents the charging progress value (taking the remaining power SOC as an example). Figure 2 Each coordinate point in represents the corresponding relationship between the battery temperature and the charging rate under different charging progress values, that is, the coordinate point (current temperature Tcur, current remaining power SOCcur) can be used to represent the current charging rate of the battery;

[0182] In one embodiment, the target charging rate includes a current charging rate and an adjacent charging rate, and the thermal management controller performs the following sub-steps:

[0183] Sub-step a1: according to the corresponding relationship, obtaining the current charging rate corresponding to the current charging area A where the current battery state is located;

[0184] Sub-step a2: then, according to the corresponding relationship, respectively obtaining the adjacent charging rates corresponding to the first adjacent area B, the third adjacent area C, the second adjacent area D, the fourth adjacent area E and the fifth adjacent area F;

[0185] Sub-step a3: finally comparing the current charging rate with the adjacent charging rate to determine the current fast charging state type of the battery;

[0186] like Figure 2 As shown, the first adjacent area B (the adjacent area on the right) / the fourth adjacent area E (the adjacent area on the left) is a charging area adjacent to the current charging area A in the temperature dimension; the second adjacent area D (the upper adjacent area) is a charging area adjacent to the current charging area A in the charging progress dimension; the third adjacent area C (the adjacent area diagonally to the upper right corner) / the fifth adjacent area F (the adjacent area diagonally to the upper left corner) is a charging area adjacent to the current charging area A in both the temperature dimension and the charging progress dimension;

[0187] It is understandable that if Figure 2 As shown, each charging zone consists of a temperature range ( Figure 2 ) and the charging progress interval ( Figure 2 The vertical axis of the current charging area is composed of the current temperature range ( Figure 2 The horizontal axis T1-T2 interval) and the current charging progress interval ( Figure 2 The vertical axis is composed of the interval SOC1-SOC2);

[0188] By comparing the current charging rate of the battery with adjacent charging rates in the temperature dimension and / or the charging progress dimension, the current fast charging state type of the battery can be accurately determined, which in turn helps to adopt an appropriate and correct battery thermal management control strategy.

[0189] Step S30, adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery.

[0190] It is understandable that different fast charging state types correspond to different battery thermal management control strategies. When the battery is fast charged, the present embodiment can execute the corresponding battery thermal management control strategy according to the determined charging state type, actively control the battery temperature, make the battery temperature follow the optimal fast charging rate, avoid the battery fast charging entering a lower rate range, and thereby effectively shorten the battery fast charging time.

[0191] For example, if the (current) charging rate of the current area A is greater than that of the adjacent areas B, C, and D, the thermal management controller may consider that the current charging state type belongs to a state where the battery is charged faster, and the battery can be ensured to be continuously in a faster charging rate range by controlling the current temperature of the battery to remain unchanged. For another example, if the (current) charging rate of the current area A is less than that of the adjacent areas B, C, and D, the thermal management controller may consider that the current charging state type belongs to a state where the battery is charged slower, and the current charging rate of the battery can be controlled to enter a faster charging rate range by executing a strategy to increase the current temperature of the battery, thereby effectively shortening the fast charging time of the battery, saving the time required for the user to charge the battery, and improving the user's experience.

[0192] Embodiment 2

[0193] Furthermore, if Figure 3 As shown, before step S10, it also includes:

[0194] Step S01, determining the temperature change trend of the battery according to the current temperature and the historical temperature of the battery;

[0195] Accordingly, the step S30 includes:

[0196] Step S30': acquiring adjacent charging rates corresponding to adjacent areas according to the temperature change trend and the corresponding relationship.

[0197] Specifically, the thermal management controller receives the current temperature Tcur(n) of the battery sent by the BMS, and needs to store the battery history temperature Tcur(n-1) at the previous moment, and determines the temperature change trend of the battery △T=Tcur(n)-Tcur(n-1) according to the current temperature and the battery history temperature;

[0198] The thermal management controller determines whether the temperature change trend △T≥a and the duration tup≥b are satisfied at the same time, for example, a is 0° and b is 3 seconds:

[0199] If △T≥a and tup≥b are satisfied at the same time, it indicates that the battery temperature is on an upward trend, and the thermal management controller determines to use the battery fast charging state characteristics in the positive temperature direction to determine the current fast charging state type; for example, if the battery temperature is on an upward trend, the thermal management controller will compare the (current) charging rate of the current area A with its adjacent areas B and C in the positive temperature direction, and use the comparison result as the battery fast charging state characteristics in the positive temperature direction;

[0200] If △T≥a or tup≥b is not satisfied, it indicates that the battery temperature is on a downward trend, and the thermal management controller determines to use the battery fast charging state characteristics in the negative temperature direction to determine the current fast charging state type; for example, if the battery temperature is on a downward trend, the thermal management controller will compare the (current) charging rate of the current area A with its adjacent areas E and F in the negative temperature direction (see Figure 6 ), and the comparison result is used as the battery fast charging state feature in the negative temperature direction.

[0201] This embodiment further accurately judges the current fast charging state type of the battery by determining the temperature change trend of the current battery state of the battery, which can help to accurately adopt a suitable and correct battery thermal management control strategy.

[0202] Embodiment 3

[0203] In this embodiment, when the temperature change trend of the battery is a temperature rising trend, the step S30' further includes:

[0204] Step b1: Determine a first charging progress interval (corresponding to Figure 2 The interval of the middle vertical axis SOC2-SOC3), in the temperature value rising direction, determines the first temperature interval adjacent to the current temperature interval (corresponding to Figure 2 The horizontal axis T2-T3 interval);

[0205] Step b2: according to the corresponding relationship, obtaining a first adjacent charging rate corresponding to the first adjacent region B, wherein the first adjacent region B is composed of a first temperature interval (T2-T3 interval) and the current charging progress interval (SOC1-SOC2 interval);

[0206] Step b3: according to the corresponding relationship, obtaining a second adjacent charging rate corresponding to the second adjacent area D, wherein the second adjacent area D is composed of the current temperature interval (interval of T1-T2) and the first charging progress interval (interval of SOC2-SOC3);

[0207] Step b4: according to the corresponding relationship, obtaining a third adjacent charging rate corresponding to the third adjacent region C, wherein the third adjacent region C is composed of the first temperature interval (T2-T3 interval) and the first charging progress interval (SOC2-SOC3 interval);

[0208] The sub-step a3 of “comparing the current charging rate with the adjacent charging rate to determine the current fast charging state type of the battery” further includes:

[0209] Step b5: comparing the current charging rate with the first adjacent charging rate to obtain a first rate comparison result; comparing the current charging rate with the second adjacent charging rate to obtain a second rate comparison result; comparing the current charging rate with the third adjacent charging rate to obtain a third rate comparison result;

[0210] Step b6: Based on the first rate comparison result, the second rate comparison result and the third rate comparison result, determine the current fast charging state type of the battery.

[0211] In this embodiment, Figure 4 As shown, when the temperature change trend of the battery is an upward trend, the current charging rate is compared with the adjacent charging rates corresponding to the three adjacent areas, and the current fast charging state type of the battery is further accurately judged based on the three comparison results, which can help to accurately adopt appropriate and correct battery thermal management control strategies.

[0212] Specifically, in one embodiment, the charging state type when the battery temperature of the battery fast charging rate table is on an upward trend is specifically set to 8 different charging state types, which can cover all possible situations when the battery temperature of the battery fast charging rate table is on an upward trend, and then optimize the corresponding battery thermal management control method according to the current fast charging state type obtained, actively control the battery temperature, and ensure that the fast charging of the battery is always in the optimal fast charging rate range when the temperature rises.

[0213] In one embodiment, the step b6 may include:

[0214] If the first rate comparison result is that the current charging rate is less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is less than the third adjacent charging rate (i.e., the charging rate of region A is less than the charging rate of region B, the charging rate of region A is less than the charging rate of region D, and the charging rate of region A is less than the charging rate of region C), it is determined that the current fast charging state type of the battery is the first state type;

[0215] When it is determined that the current fast charging state type of the battery is the first state type, the step S30 specifically includes:

[0216] Sub-step C1: adjusting the current temperature Tcur of the battery to the maximum temperature value T2 of the current temperature range by turning on the battery heating function, so that the inlet water temperature of the battery reaches the first target heating value TheatTar, so as to increase the current charging rate of the battery.

[0217] Furthermore, in one example, step b6 may include:

[0218] When the first rate comparison result is that the current charging rate is not less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is not less than the third adjacent charging rate (that is, the charging rate of area A is not less than the charging rate of area B, the charging rate of area A is not less than the charging rate of area D, and the charging rate of area A is not less than the charging rate of area C), it is determined that the current fast charging state type of the battery is the second state type, then sub-step C2 is executed: the battery heating function or the battery cooling function is not turned on; indicating that the battery is currently in a better charging rate range, so that it continues to maintain.

[0219] Furthermore, in one example, step b6 may include:

[0220] If the first rate comparison result is that the current charging rate is less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is less than the third adjacent charging rate (i.e., the charging rate of region A is less than the charging rate of region B, the charging rate of region A is not less than the charging rate of region D, and the charging rate of region A is less than the charging rate of region C), then it is determined that the current fast charging state type of the battery is the third state type;

[0221] When it is determined that the current fast charging state type of the battery is the third state type, it means that the current charging rate of the battery can be increased by heating the temperature of the battery, and the step S30 specifically includes:

[0222] Sub-step C3: Adjust the current temperature Tcur of the battery to the maximum temperature T3 of the first temperature interval (interval of T2-T3) by turning on the battery heating function. At this time, the battery inlet water temperature target value needs to be added with a coefficient Z1 so that the battery inlet water temperature reaches the second target heating value TheatTar+Z1 to increase the current charging rate of the battery.

[0223] Furthermore, in one example, the step b6 may further include:

[0224] If the first rate comparison result is that the current charging rate is less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is not less than the third adjacent charging rate (i.e., the charging rate of region A is less than the charging rate of region B, the charging rate of region A is less than the charging rate of region D, and the charging rate of region A is not less than the charging rate of region C), it is determined that the current fast charging state type of the battery is the fourth state type;

[0225] When it is determined that the current fast charging state type of the battery is the fourth state type, the step S30 specifically includes:

[0226] Sub-step C41: Obtain the battery self-heating rate of the battery, and calculate the maximum charging threshold value ( Figure 4 The estimated battery temperature Tcal corresponding to the SOC2); determining whether the estimated battery temperature Tcal is greater than the maximum temperature value ( Figure 4 T2):

[0227] If yes, it means that the battery temperature is high at this time. In order to ensure the battery charging quality, sub-step C42 can be executed: the current temperature Tcur of the battery is adjusted to the minimum temperature value (T1-T2) of the current temperature range (T1-T2) by turning on the battery cooling function. Figure 4 , so that the inlet water temperature of the battery reaches the first target cooling value TcoolTar to control the current charging rate of the battery.

[0228] If not, execute sub-step C2: do not turn on the battery heating function or the battery cooling function; this indicates that the battery is currently in a good charging rate range, and continue to keep the battery in a faster charging rate range.

[0229] It should be noted that, in this embodiment, the estimated battery temperature Tcal can be calculated in the following manner:

[0230] First, the battery self-heating rate during fast charging can be obtained by conducting battery fast charging tests at different external temperatures. For example, the battery self-heating rate can be obtained by looking up the table as x;

[0231] Then, according to the ampere-hour integration method, we can know the estimated time t required for the battery to fast charge from the current SOCcur to the boundary SOC2 of the current charging progress interval, where t = (SOC2-SOCcur)*C / I, C is the rated capacity of the battery pack, I is the fast charge current (which can be obtained from the battery fast charge rate table), and SOC2 is Figure 2 The boundary SOC of the current charging progress interval;

[0232] Finally, according to the battery self-heating rate x and the time t required for fast charging in the current charging progress interval, the estimated battery temperature when the battery reaches the boundary SOC2 of the current charging progress interval from the current battery state is obtained: Tcal=Tcur+x*t.

[0233] Furthermore, in one example, the step b6 may further include:

[0234] If the first rate comparison result is that the current charging rate is not less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is less than the third adjacent charging rate (i.e., the charging rate of region A is not less than the charging rate of region B, the charging rate of region A is less than the charging rate of region D, and the charging rate of region A is less than the charging rate of region C), then it is determined that the current fast charging state type of the battery is the fifth state type;

[0235] When it is determined that the current fast charging state type of the battery is the fifth state type, the step S30 specifically includes:

[0236] Sub-step C51: Obtain the battery self-heating rate of the battery, and calculate the maximum charging threshold value ( Figure 4 and determining whether the estimated battery temperature Tcal is greater than the maximum temperature value of the current temperature interval A ( Figure 4 T2);

[0237] If so, execute sub-step C52: turn on the battery cooling function to cool down the current temperature Tcur of the battery (the target temperature value of the cooled battery can be the current temperature Tcur minus the coefficient y1), so that the inlet water temperature of the battery reaches the first target cooling value TcoolTar to control the current charging rate of the battery (if not, execute sub-step C2: do not turn on the battery heating function or the battery cooling function, indicating that the battery is currently in a good charging rate range and continues to maintain it).

[0238] Sub-step C53: detecting whether the battery temperature rise rate of the battery is within a first preset temperature rise rate range at a preset time interval;

[0239] Specifically, the thermal management controller can detect whether the battery temperature rise rate per unit SOC exceeds a first preset temperature rise rate range interval [Kmin, Kmax] at a preset time interval t1 (for example, t1=1 minute):

[0240] If the battery temperature rise rate is within the first preset temperature rise rate range, executing sub-step C54: continuing to cool the inlet water temperature of the battery based on the first target cooling value TcoolTar (for example, TcoolTar may continue to decrease by y1);

[0241] It should be noted that the method for calculating the battery temperature rise rate setting range value within each unit SOC of this embodiment (to ensure that the charging curve does not go to the low rate interval) can be calculated by the following formula:

[0242] The maximum value is Kmax = (T2-Tcur) / (SOC2-SOCcur);

[0243] The minimum value is Kmin=(Tcur-Tcur) / (SOC2-SOCcur)=0;

[0244] The calculation formula for the battery temperature rise rate of the unit SOC detected at the preset time interval t1 is:

[0245] (T cur+t1 -Tcur) / (SOC cur+t1 -SOCcur); T cur+t1 Indicates the battery temperature after the preset time interval t1, SOC cur+t1 Indicates the remaining battery power after the preset time interval t1.

[0246] If the battery temperature rise rate is not within the preset temperature rise rate range, sub-step C55 is executed: the battery cooling function is turned on to cool down the current temperature of the battery (for example, TcoolTar can continue to decrease by Z2), so that the inlet water temperature of the battery reaches the second target cooling value, wherein the second target cooling value is less than the first target cooling value. Then, by real-time detection of the battery temperature rise rate, different degrees of cooling and cooling treatment are performed on the battery according to different battery temperature rise rate detection results, so as to reasonably ensure the battery charging safety and charging efficiency.

[0247] Furthermore, in one example, the step b6 may further include:

[0248] If the first rate comparison result is that the current charging rate is not less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is not less than the third adjacent charging rate (that is, the charging rate of region A is not less than the charging rate of region B, the charging rate of region A is less than the charging rate of region D, and the charging rate of region A is not less than the charging rate of region C), it is determined that the current fast charging state type of the battery is the sixth state type;

[0249] When it is determined that the current fast charging state type of the battery is the sixth state type, the step S30 specifically includes:

[0250] Sub-step C41: Obtain the battery self-heating rate of the battery, and calculate the maximum charging threshold value ( Figure 4 and determining whether the estimated battery temperature Tcal is greater than the maximum temperature value of the current temperature interval A ( Figure 4 T2):

[0251] If so, it means that the temperature of the battery is relatively high at this time. In order to ensure the battery charging quality, sub-step C6 can be executed: the current temperature Tcur of the battery is cooled by turning on the battery cooling function (for example, a coefficient y2 is subtracted from the current temperature Tcur), so that the inlet water temperature of the battery reaches the first target cooling value TcoolTar to control the current charging rate of the battery.

[0252] If not, execute sub-step C2: do not turn on the battery heating function or the battery cooling function; this indicates that the battery is currently in a good charging rate range, and continue to keep the battery in a faster charging rate range.

[0253] Furthermore, in one example, the step b6 may further include:

[0254] If the first rate comparison result is that the current charging rate is not less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is less than the third adjacent charging rate (that is, the charging rate of region A is not less than the charging rate of region B, the charging rate of region A is not less than the charging rate of region D, and the charging rate of region A is less than the charging rate of region C), it is determined that the current fast charging state type of the battery is the seventh state type;

[0255] When it is determined that the current fast charging state type of the battery is the seventh state type, the step S30 specifically includes:

[0256] Sub-step C1: adjusting the current temperature Tcur of the battery to the maximum temperature value T2 of the current temperature range by turning on the battery heating function, so that the inlet water temperature of the battery reaches the first target heating value TheatTar, so as to increase the current charging rate of the battery.

[0257] Sub-step C71: detecting whether the battery temperature rise rate of the battery is within a second preset temperature rise rate range at a preset time interval;

[0258] Specifically, the thermal management controller K can detect whether the battery temperature rise rate of the unit SOC exceeds the second preset temperature rise rate range interval [Kmax-coefficient e1, Kmax+coefficient e1] according to the preset time interval t1 (for example, t1=1 minute).

[0259] If the battery temperature rise rate is within the second preset temperature rise rate range, repeat sub-step C1: adjust the current temperature Tcur of the battery to the maximum temperature value T2 of the current temperature range by turning on the battery heating function, so that the inlet water temperature of the battery reaches the first target heating value TheatTar, so as to increase the current charging rate of the battery.

[0260] If the battery temperature rise rate is not within the second preset temperature rise rate range, detecting whether the battery temperature rise rate of the battery is less than the minimum value Kmax-coefficient e1 of the second preset temperature rise rate range at a preset time interval;

[0261] If the battery temperature rise rate is less than the minimum value of the second preset temperature rise rate range, sub-step C73 is executed: the current temperature of the battery is adjusted to the maximum temperature value T2 of the current temperature range (T1-T2) by turning on the battery heating function, and the inlet water temperature of the battery reaches the second target heating value (for example, at this time, the battery inlet water temperature target value needs to be added with a coefficient z3, becoming TheatTar+z3), wherein the second target heating value is greater than the first target heating value;

[0262] If the battery temperature rise rate is not less than the minimum value of the second preset temperature rise rate range, sub-step C74 is executed: the current temperature of the battery is adjusted to the maximum temperature value T2 of the current temperature range by turning on the battery heating function. At this time, the battery inlet water temperature target value needs to be reduced by a coefficient z4 so that the battery inlet water temperature reaches the third target heating value (TheatTar-z4), where the third target heating value is less than the first target heating value.

[0263] It should be noted that the values ​​of Z3 and Z4 in this embodiment can be calibrated to different values ​​according to the deviation between the calculated K value and the set range value, and the corresponding values ​​can be obtained by looking up the battery fast charging rate table. The purpose is to ensure the battery temperature rise rate and enter the diagonally adjacent area with a high rate to the greatest extent possible.

[0264] By detecting the battery temperature rise rate in real time when the battery is in a temperature rising trend and is in the seventh fast charging state, and performing different degrees of heating and temperature rise treatment on the battery according to different battery temperature rise rate detection results, the battery charging efficiency can be effectively improved.

[0265] Furthermore, in one example, the step b6 may further include:

[0266] When the first rate comparison result is that the current charging rate is less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is not less than the third adjacent charging rate (that is, the charging rate of area A is less than the charging rate of area B, the charging rate of area A is not less than the charging rate of area D, and the charging rate of area A is not less than the charging rate of area C), it is determined that the current fast charging state type of the battery is the eighth state type, then sub-step C2 is executed: the battery heating function or the battery cooling function is not turned on; indicating that the battery is currently in a better charging rate range, so that it continues to maintain.

[0267] The embodiment of the present application pre-sets at least 8 different battery fast charging status types according to the battery temperature rising trend, which can cover all possible situations of the battery fast charging rate table when the temperature is rising. When the battery is in a temperature rising trend, the current charging rate is compared with the adjacent charging rates corresponding to the three adjacent areas, and then the corresponding battery thermal management control method can be optimized according to the current fast charging status type obtained according to the comparison result, and the battery temperature can be actively controlled to ensure that the battery fast charging is always in the optimal fast charging rate range.

[0268] Embodiment 4

[0269] In this embodiment, the current charging area (i.e., Tcur and SOCcur are in Figure 6 The limited area in the current temperature range ( Figure 6 The interval between T5 and T6 in the current charging progress interval ( Figure 6 When the temperature change trend of the battery is a temperature decrease trend, the step S30` further includes:

[0270] Step b01: Determine a first charging progress interval (corresponding to Figure 6 The interval of the middle vertical axis SOC5-SOC6), a fourth temperature interval adjacent to the current temperature interval is determined in the temperature value decreasing direction (corresponding to Figure 6 The horizontal axis T5-T4 interval);

[0271] Step b02: According to the corresponding relationship, a fourth adjacent charging rate corresponding to the fourth adjacent area E is obtained, wherein the fourth adjacent area E is defined by a fourth temperature range ( Figure 6 The T5-T4 interval) and the current charging progress interval (SOC4-SOC5 interval);

[0272] Step b03: according to the corresponding relationship, obtaining a second adjacent charging rate corresponding to the second adjacent area D, wherein the second adjacent area D is composed of the current temperature interval (interval T5-T6) and the first charging progress interval (interval SOC5-SOC6);

[0273] Step b04: according to the corresponding relationship, obtaining a fifth adjacent charging rate corresponding to the fifth adjacent region F, wherein the fifth adjacent region F is composed of the fourth temperature interval (T5-T4 interval) and the first charging progress interval (SOC5-SOC6 interval);

[0274] The sub-step a3 of "comparing the current charging rate with the adjacent charging rate to determine the current charging state type of the battery" further includes:

[0275] Step b05: comparing the current charging rate with the fourth adjacent charging rate to obtain a fourth rate comparison result; comparing the current charging rate with the second adjacent charging rate to obtain a second rate comparison result; comparing the current charging rate with the fifth adjacent charging rate to obtain a fifth rate comparison result;

[0276] Step b06: Determine the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result and the fifth rate comparison result.

[0277] In this embodiment, Figure 7 As shown, when the temperature change trend of the battery is a downward trend, the current charging rate is compared with the adjacent charging rates corresponding to the three adjacent areas, and the current charging state type of the battery is further accurately determined based on the three comparison results, which can help to accurately adopt a suitable and correct battery thermal management control strategy.

[0278] Specifically, in one embodiment, the charging state type when the battery temperature of the battery fast charging rate table is on a downward trend is specifically set to 8 different charging state types, which can cover all possible situations when the battery temperature of the battery fast charging rate table is on a downward trend, and then optimize the corresponding battery thermal management control method according to the obtained current charging state type, actively control the battery temperature, and ensure that the battery fast charging is always in the optimal fast charging rate range when the battery temperature drops.

[0279] In one embodiment, the step b06 may include:

[0280] If the fourth rate comparison result is that the current charging rate is less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is less than the fifth adjacent charging rate (i.e., the charging rate of region A is less than the charging rate of region E, the charging rate of region A is less than the charging rate of region D, and the charging rate of region A is less than the charging rate of region F), then it is determined that the current charging state type of the battery is the ninth state type;

[0281] When it is determined that the current charging state type of the battery is the ninth state type, the step S30 specifically includes:

[0282] Sub-step C01: adjusting the current temperature Tcur of the battery to the minimum temperature value T5 of the current temperature range by turning on the battery cooling function, so that the inlet water temperature of the battery reaches the first target cooling value TcoolTar1, so as to control the current charging rate of the battery.

[0283] Furthermore, in one example, step b06 may include:

[0284] When the fourth rate comparison result is that the current charging rate is not less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is not less than the fifth adjacent charging rate (that is, the charging rate of area A is not less than the charging rate of area E, the charging rate of area A is not less than the charging rate of area D, and the charging rate of area A is not less than the charging rate of area F), it is determined that the current charging state type of the battery is the tenth state type, then sub-step C2 is executed: the battery heating function or the battery cooling function is not turned on; indicating that the battery is currently in a better charging rate range, so that it continues to maintain.

[0285] Furthermore, in one example, step b06 may include:

[0286] If the fourth rate comparison result is that the current charging rate is less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is less than the fifth adjacent charging rate (i.e., the charging rate of region A is less than the charging rate of region E, the charging rate of region A is not less than the charging rate of region D, and the charging rate of region A is less than the charging rate of region F), then it is determined that the current charging state type of the battery is the eleventh state type;

[0287] When it is determined that the current charging state type of the battery is the eleventh state type, it means that the current temperature of the battery is too high and a cooling process is required to ensure the stability of the current charging rate of the battery. Then, step S30 specifically includes:

[0288] Sub-step C03: Adjust the current temperature Tcur of the battery to the minimum temperature value T4 of the fourth temperature interval (interval of T5-T4) by turning on the battery cooling function. At this time, the battery inlet water temperature target value needs to be subtracted by a coefficient Z11 so that the battery inlet water temperature reaches the second target cooling value TcoolTar1-Z11 to control the current charging rate of the battery to be stable.

[0289] Furthermore, in one example, the step b06 may further include:

[0290] If the fourth rate comparison result is that the current charging rate is less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is not less than the fifth adjacent charging rate (i.e., the charging rate of region A is less than the charging rate of region E, the charging rate of region A is less than the charging rate of region D, and the charging rate of region A is not less than the charging rate of region F), then it is determined that the current charging state type of the battery is the twelfth state type;

[0291] When it is determined that the current charging state type of the battery is the twelfth state type, the step S30 specifically includes:

[0292] Sub-step C041: Obtain the battery self-heating rate of the battery, and calculate the maximum charging threshold value ( Figure 6 The estimated battery temperature Tcal corresponding to the SOC5); determining whether the estimated battery temperature Tcal is less than the minimum temperature value ( Figure 6 T5):

[0293] If yes, it means that the temperature of the battery is relatively low at this time. In order to improve the battery charging rate, sub-step C042 can be executed: the current temperature Tcur of the battery is adjusted to the maximum temperature value (T5-T6) of the current temperature range (T5-T6) by turning on the battery heating function. Figure 6 T6), so that the inlet water temperature of the battery reaches the first target heating value TheatTar1, so as to improve the current charging rate of the battery.

[0294] If not, execute sub-step C2: do not turn on the battery heating function or the battery cooling function; this indicates that the battery is currently in a good charging rate range, and continue to keep the battery in a faster charging rate range.

[0295] It should be noted that, in this embodiment, the estimated battery temperature Tcal can be calculated in the following manner:

[0296] First, the battery self-heating rate during fast charging can be obtained by conducting battery fast charging tests at different external temperatures. For example, the battery self-heating rate can be obtained by looking up the table as x;

[0297] Then, according to the ampere-hour integration method, we can know the estimated time t required for the battery to fast charge from the current SOCcur to the boundary SOC5 of the current charging progress interval, where t = (SOC5-SOCcur)*C / I, C is the rated capacity of the battery pack, I is the fast charge current (which can be obtained from the battery fast charge rate table), and SOC5 is Figure 6 The boundary SOC of the current charging progress interval;

[0298] Finally, according to the battery self-heating rate x and the time t required for fast charging in the current charging progress interval, the estimated battery temperature when the battery reaches the boundary SOC5 of the current charging progress interval from the current battery state is obtained: Tcal=Tcur+x*t.

[0299] Furthermore, in one example, the step b06 may further include:

[0300] If the fourth rate comparison result is that the current charging rate is not less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is less than the fifth adjacent charging rate (i.e., the charging rate of region A is not less than the charging rate of region E, the charging rate of region A is less than the charging rate of region D, and the charging rate of region A is less than the charging rate of region F), it is determined that the current charging state type of the battery is the thirteenth state type;

[0301] When it is determined that the current charging state type of the battery is the thirteenth state type, the step S30 specifically includes:

[0302] Sub-step C051: Obtain the battery self-heating rate of the battery, and calculate the maximum charging threshold value ( Figure 6 and determining whether the estimated battery temperature Tcal is lower than the minimum temperature value (T5-T6) of the current temperature range (T5-T6); Figure 7 T5);

[0303] If so, execute sub-step C052: turn on the battery heating function to raise the current temperature Tcur of the battery (the heated battery target temperature value can be the current temperature Tcur plus the coefficient y11), so that the inlet water temperature of the battery reaches the first target heating value TheatTar1, so as to control the current charging rate of the battery (if not, execute sub-step C2: do not turn on the battery heating function or the battery cooling function, indicating that the battery is currently in a good charging rate range and continues to maintain it).

[0304] Sub-step C053: detecting whether the battery temperature drop rate of the battery is within a first preset temperature drop rate range at a preset time interval;

[0305] Specifically, the thermal management controller can detect whether the battery temperature drop rate per unit SOC exceeds the first preset temperature rise rate range [Kmin1, Kmax1] at a preset time interval t1 (for example, t1=1 minute):

[0306] If the battery temperature drop rate is within the first preset temperature drop rate range, executing sub-step C054: continuing to increase the inlet water temperature of the battery based on the first target heating value TheatTar1;

[0307] It should be noted that the method for calculating the battery temperature drop rate setting range value of each unit SOC in this embodiment (to ensure that the charging curve does not go to the low rate interval) can be calculated by the following formula:

[0308] The maximum value is Kmax1 = (Tcur-T5) / (SOC5-SOCcur);

[0309] The minimum value is Kmin1 = (Tcur - Tcur) / (SOC5 - SOCcur) = 0;

[0310] The calculation formula for the battery temperature drop rate of the unit SOC detected at the preset time interval t1 is:

[0311] (Tcur-T cur+t1 ) / (SOC cur+t1 -SOCcur); T cur+t1 Indicates the battery temperature after the preset time interval t1, SOC cur+t1 Indicates the remaining battery power after the preset time interval t1.

[0312] If the battery temperature drop rate is not within the preset temperature drop rate range, execute sub-step C055: turn on the battery heating function to raise the current temperature of the battery (for example, the temperature can be raised by Z21 based on TheatTar1), so that the inlet water temperature of the battery reaches the second target heating value, wherein the second target heating value is less than the first target heating value. Then, by real-time detection of the battery temperature drop rate, different degrees of cooling and heating treatment are performed on the battery according to different battery temperature drop rate detection results, thereby ensuring that the fast charge of the battery is in the optimal fast charge rate range when the temperature is lowered.

[0313] Furthermore, in one example, the step b06 may further include:

[0314] If the fourth rate comparison result is that the current charging rate is not less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is not less than the fifth adjacent charging rate (i.e., the charging rate of region A is not less than the charging rate of region E, the charging rate of region A is less than the charging rate of region D, and the charging rate of region A is not less than the charging rate of region F), then it is determined that the current charging state type of the battery is the fourteenth state type;

[0315] When it is determined that the current charging state type of the battery is the fourteenth state type, the step S30 specifically includes:

[0316] Sub-step C041: Obtain the battery self-heating rate of the battery, and calculate the maximum charging threshold value ( Figure 6 The estimated battery temperature Tcal corresponding to the SOC5); determining whether the estimated battery temperature Tcal is less than the minimum temperature value ( Figure 6 T5):

[0317] If so, it means that the temperature of the battery is relatively low at this time. In order to increase the battery charging rate, sub-step C06 can be executed: the current temperature Tcur of the battery is increased by turning on the battery heating function (for example, a coefficient y21 is added on the basis of the current temperature Tcur), so that the inlet water temperature of the battery reaches the first target heating value TheatTar1, so as to control the current charging rate of the battery.

[0318] If not, execute sub-step C2: do not turn on the battery heating function or the battery cooling function; this indicates that the battery is currently in a good charging rate range, and continue to keep the battery in a faster charging rate range.

[0319] Furthermore, in one example, the step b06 may further include:

[0320] If the fourth rate comparison result is that the current charging rate is not less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is less than the fifth adjacent charging rate (i.e., the charging rate of region A is not less than the charging rate of region E, the charging rate of region A is not less than the charging rate of region D, and the charging rate of region A is less than the charging rate of region F), then it is determined that the current charging state type of the battery is the fifteenth state type;

[0321] When it is determined that the current charging state type of the battery is the fifteenth state type, the step S30 specifically includes:

[0322] Sub-step C01: Adjust the current temperature Tcur of the battery to the minimum temperature value T5 of the current temperature range (T5, T6) by turning on the battery cooling function, so that the inlet water temperature of the battery reaches the first target cooling value TcoolTar1 to control the current charging rate of the battery.

[0323] Sub-step C071: detecting whether the battery temperature drop rate of the battery is within a second preset temperature drop rate range at a preset time interval;

[0324] Specifically, the thermal management controller may detect whether the battery temperature drop rate per unit SOC exceeds a second preset temperature rise rate range interval [Kmax1-coefficient e1, Kmax1+coefficient e1] at a preset time interval t1 (eg, t1=1 minute);

[0325] If the battery temperature drop rate is within the second preset temperature drop rate range, repeat sub-step C01: adjust the current temperature Tcur of the battery to the minimum temperature value T5 of the current temperature range by turning on the battery cooling function, so that the inlet water temperature of the battery reaches the first target cooling value TcoolTar1, so as to control the current charging rate of the battery to remain stable.

[0326] If the battery temperature drop rate is not within the second preset temperature drop rate range, sub-step C072: detecting whether the battery temperature drop rate of the battery is less than the minimum value (Kmax1-coefficient e1) of the second preset temperature drop rate range at a preset time interval;

[0327] If the battery temperature drop rate is less than the minimum value of the second preset temperature drop rate range, sub-step C073 is executed: the current temperature of the battery is adjusted to the minimum temperature value T5 of the current temperature range by turning on the battery heating function, and the inlet water temperature of the battery reaches the second target cooling value (for example, at this time, the battery inlet water temperature target value needs to be subtracted by a coefficient z31, which becomes TcoolTar1-z31), wherein, wherein, the second target cold zone value is less than the first target cooling value;

[0328] If the battery temperature drop rate is not less than the minimum value of the second preset temperature drop rate range, sub-step C074 is executed: the current temperature of the battery is adjusted to the minimum temperature value T5 of the current temperature range by turning on the battery heating function. For example, at this time, the battery inlet water temperature target value needs to be added with a coefficient z41 so that the battery inlet water temperature reaches the third target cooling value (TcoolTar1+Z41), wherein the third target cooling value is greater than the first target cooling value.

[0329] It should be noted that the values ​​of Z31 and Z41 in this embodiment can be calibrated to different values ​​according to the deviation between the calculated K value and the set range value, and the corresponding values ​​can be obtained by looking up the battery fast charging rate table. The purpose is to ensure the battery temperature rise rate and to enter the high-rate diagonally adjacent area to the greatest extent possible.

[0330] By detecting the battery temperature rise rate in real time when the battery is in a temperature decreasing trend and is in the seventh charging state, and performing different degrees of cooling treatment on the battery according to different battery temperature decrease rate detection results, the stability and quality of battery fast charging can be effectively guaranteed.

[0331] Furthermore, in one example, the step b06 may further include:

[0332] When the fourth rate comparison result is that the current charging rate is less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is not less than the fifth adjacent charging rate (that is, the charging rate of area A is less than the charging rate of area E, the charging rate of area A is not less than the charging rate of area D, and the charging rate of area A is not less than the charging rate of area F), it is determined that the current charging state type of the battery is the sixteenth state type, then sub-step C2 is executed: the battery heating function or the battery cooling function is not turned on; indicating that the battery is currently in a better charging rate range, so that it continues to be maintained.

[0333] The embodiment of the present application pre-sets at least 8 different battery charging status types according to the battery temperature decreasing trend, which can cover all possible situations of the battery fast charging rate table when the temperature is decreasing. When the battery is in a temperature decreasing trend, the current charging rate is compared with the adjacent charging rates corresponding to the three adjacent areas, and then the corresponding battery thermal management control method can be optimized according to the current charging status type obtained according to the comparison result, and the battery temperature can be actively controlled to ensure that the battery fast charging is always in the optimal fast charging rate range.

[0334] Embodiment 5

[0335] See also Figure 8 , Figure 8 The present application provides an electronic device for battery charging management and control. The structure of the electronic device may be an ECU (electronic control unit) on the vehicle side. The EUC includes the thermal management controller mentioned in each of the above battery charging management and control method embodiments, such as Figure 8 As shown, the electronic device of this embodiment includes: at least one processor 10 ( Figure 7 Only one is shown), a memory 11, and a computer program 12 stored in the memory 11 and executable on the at least one processor 10, wherein the processor 10 implements the steps in the embodiment of the battery charging management control method of the present application when executing the computer program 12.

[0336] Figure 8 The electronic device shown may include, but is not limited to, a processor 10 and a memory 11. Those skilled in the art will appreciate that Figure 8 These are merely examples of electronic devices and do not constitute a limitation on the electronic devices. The electronic devices may include more or fewer components than those shown in the figure, or a combination of certain components, or different components. For example, the electronic devices may also include input and output devices, network access devices, etc.

[0337] The processor 10 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0338] In some embodiments, the memory 11 may be an internal storage unit of the computer device 1, such as a hard disk or memory of the computer device 1. In other embodiments, the memory 11 may also be an external storage device of the computer device 1, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the computer device 1. Further, the memory 11 may also include both an internal storage unit and an external storage device of the computer device 1. The memory 11 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program. The memory 11 may also be used to temporarily store data that has been output or is to be output.

[0339] Further, in one embodiment, if Fig. 9 As shown, the present invention also provides a battery charging management control device, comprising:

[0340] An acquisition unit 10 is used to determine a current battery state of the battery, wherein the current battery state includes a current temperature and a current charging progress value;

[0341] a determination unit 20, configured to determine the current fast charging state type of the battery from the battery fast charging rate table according to the current battery state, the battery fast charging rate table including a plurality of different charging state types, the charging state type being related to the charging progress value of the battery and the battery temperature;

[0342] The control unit 30 is used to adjust the current temperature of the battery according to the current charging state type to control the current charging rate of the battery.

[0343] It should be noted that the battery charging management control device can be the thermal management controller mentioned in the above battery charging management control method embodiments, which can be understood as a virtual device that can be loaded into the electronic device of the above embodiments. The electronic device calls the battery charging management control device through the processor, and then runs the specific implementation plan in the above battery charging management control method embodiments. The information interaction, execution process, etc. between the above devices / units are based on the same concept as the method embodiments of this application. Their specific functions and technical effects can be specifically referred to in the method embodiment section.

[0344] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0345] An embodiment of the present application further provides a storage medium, which is a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0346] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device capable of carrying the computer program code to an electronic device, a recording medium, a computer memory, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), an electric carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0347] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0348] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A battery charging management control method, characterized in that: The method comprises the following steps: Determining a current battery state of the battery, the current battery state comprising a current temperature and a current charging progress value; Determining a current fast charging state type of the battery from a battery fast charging rate table according to the current battery state, wherein the battery fast charging rate table includes a plurality of different charging state types, and the charging state type is related to a charging progress value of the battery and a battery temperature; The current temperature of the battery is adjusted according to the current charging state type to control the current charging rate of the battery.

2. The method according to claim 1, characterized in that The determining the current fast charge state type of the battery from a battery fast charge rate table according to the current battery state includes: Based on the current charging progress value, the target charging rates of at least two charging progress intervals related to the current charging progress value under different temperature conditions are queried from the battery fast charging rate table, and the current fast charging state type of the battery is determined based on the target charging rate.

3. The method according to claim 2, characterized in that The battery fast charge rate table includes the corresponding relationship between the battery temperature and the charge rate at different charging progress values, and the target charge rate includes the current charge rate and the adjacent charge rate; The method of querying, based on the current charging progress value, target charging rates corresponding to at least two charging progress intervals related to the current charging progress value under different temperature conditions from a battery fast charging rate table, and determining the current fast charging state type of the battery based on the target charging rate, includes: According to the corresponding relationship, obtaining a current charging rate corresponding to a current charging area where the current battery state is located; According to the corresponding relationship, an adjacent charging rate corresponding to an adjacent area is obtained, wherein the adjacent area is an area adjacent to the current charging area in a temperature dimension and / or a charging progress dimension; The current charging rate is compared with the adjacent charging rate to determine the current fast charging state type of the battery.

4. The method according to any one of claims 1 to 3, characterized in that The method further comprises: Obtaining a current temperature of the battery and determining a historical temperature of the battery; Determine a temperature change trend of the battery according to the current temperature and the historical temperature of the battery; The acquiring, according to the corresponding relationship, adjacent charging rates corresponding to adjacent areas includes: Adjacent charging rates corresponding to adjacent areas are obtained according to the temperature change trend and the corresponding relationship.

5. The method according to claim 4, characterized in that The current charging area is composed of a current temperature range and a current charging progress range; Wherein, when the temperature change trend is a temperature rising trend, acquiring adjacent charging rates corresponding to adjacent areas according to the temperature change trend and the corresponding relationship includes: Determine a first charging progress interval adjacent to the current charging progress interval in a direction in which the charging progress value increases, and determine a first temperature interval adjacent to the current temperature interval in a direction in which the temperature value increases; According to the corresponding relationship, a first adjacent charging rate corresponding to the first adjacent area is obtained, where the first adjacent area consists of a first temperature interval and the current charging progress interval; According to the corresponding relationship, a second adjacent charging rate corresponding to the second adjacent area is obtained, where the second adjacent area is composed of the current temperature interval and the first charging progress interval; According to the corresponding relationship, a third adjacent charging rate corresponding to a third adjacent region is acquired, where the third adjacent region is composed of the first temperature interval and the first charging progress interval; The comparing the current charging rate with the adjacent charging rate to determine the current fast charging state type of the battery includes: Comparing the current charging rate with the first adjacent charging rate to obtain a first rate comparison result; Comparing the current charging rate with the second adjacent charging rate to obtain a second rate comparison result; Comparing the current charging rate with the third adjacent charging rate to obtain a third rate comparison result; Based on the first rate comparison result, the second rate comparison result and the third rate comparison result, a current fast charging state type of the battery is determined.

6. The method according to claim 5, characterized in that The determining the current fast charging state type of the battery based on the first rate comparison result, the second rate comparison result, and the third rate comparison result includes: If the first rate comparison result is that the current charging rate is less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is less than the third adjacent charging rate, it is determined that the current fast charging state type of the battery is the first state type; The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes: When it is determined that the current fast charging state type of the battery is the first state type, the current temperature of the battery is adjusted to the maximum temperature value of the current temperature range by turning on the battery heating function, so that the inlet water temperature of the battery reaches the first target heating value, thereby increasing the current charging rate of the battery.

7. The method according to claim 5, characterized in that The determining the current fast charging state type of the battery based on the first rate comparison result, the second rate comparison result, and the third rate comparison result includes: When the first rate comparison result is that the current charging rate is not less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is not less than the third adjacent charging rate, determining that the current fast charging state type of the battery is the second state type, and not turning on the battery heating function or the battery cooling function; or When the first rate comparison result is that the current charging rate is less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is not less than the third adjacent charging rate, it is determined that the current fast charging state type of the battery is the eighth state type, and the battery heating function or the battery cooling function is not turned on.

8. The method according to claim 5, characterized in that The determining the current fast charging state type of the battery based on the first rate comparison result, the second rate comparison result, and the third rate comparison result includes: If the first rate comparison result is that the current charging rate is less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is less than the third adjacent charging rate, then it is determined that the current fast charging state type of the battery is the third state type; The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes: When it is determined that the current fast charging state type of the battery is the third state type, the current temperature of the battery is adjusted to the maximum temperature value of the first temperature range by turning on the battery heating function, so that the inlet water temperature of the battery reaches the second target heating value, thereby increasing the current charging rate of the battery.

9. The method according to claim 5, characterized in that The determining the current fast charging state type of the battery based on the first rate comparison result, the second rate comparison result, and the third rate comparison result includes: If the first rate comparison result is that the current charging rate is less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is not less than the third adjacent charging rate, then it is determined that the current fast charging state type of the battery is the fourth state type; The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes: When it is determined that the current fast charging state type of the battery is the fourth state type, obtaining a battery self-heating rate of the battery, and calculating an estimated battery temperature corresponding to when the maximum charging critical value of the current charging area is reached according to the battery self-heating rate; Determine whether the estimated battery temperature is greater than the maximum temperature value of the current temperature range. If so, adjust the current temperature of the battery to the minimum temperature value of the current temperature range by turning on the battery cooling function so that the inlet water temperature of the battery reaches the first target cooling value to control the current charging rate of the battery.

10. The method according to claim 5, characterized in that The determining the current fast charging state type of the battery based on the first rate comparison result, the second rate comparison result, and the third rate comparison result includes: If the first rate comparison result is that the current charging rate is not less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is less than the third adjacent charging rate, then it is determined that the current fast charging state type of the battery is the fifth state type; The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes: When it is determined that the current fast charging state type of the battery is the fifth state type, obtaining a battery self-heating rate of the battery, and calculating an estimated battery temperature corresponding to a maximum charging critical value of the current charging area when the battery self-heating rate reaches the maximum charging critical value of the current charging area; Determine whether the estimated battery temperature is greater than the maximum temperature value of the current temperature range. If so, turn on the battery cooling function to cool the current temperature of the battery so that the inlet water temperature of the battery reaches a first target cooling value to control the current charging rate of the battery.

11. The method according to claim 10, characterized in that After the step of determining whether the estimated battery temperature is greater than the maximum temperature value of the current temperature range, and if so, turning on the battery cooling function to cool the current temperature of the battery so that the inlet water temperature of the battery reaches a first target cooling value to control the current charging rate of the battery, the method further includes: Detecting whether a battery temperature rise rate of the battery is within a first preset temperature rise rate range at a preset time interval; If the battery temperature rise rate is within the first preset temperature rise rate range, then the inlet water temperature of the battery continues to be cooled based on the first target cooling value; If the battery temperature rise rate is not within a preset temperature rise rate range, the battery cooling function is turned on to cool the current temperature of the battery so that the inlet water temperature of the battery reaches a second target cooling value, wherein the second target cooling value is less than the first target cooling value.

12. The method according to claim 5, characterized in that The determining the current fast charging state type of the battery based on the first rate comparison result, the second rate comparison result, and the third rate comparison result includes: If the first rate comparison result is that the current charging rate is not less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is not less than the third adjacent charging rate, it is determined that the current fast charging state type of the battery is the sixth state type; The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes: When it is determined that the current fast charging state type of the battery is the sixth state type, obtaining a battery self-heating rate of the battery, and calculating an estimated battery temperature corresponding to when the maximum charging critical value of the current charging area is reached according to the battery self-heating rate; Determine whether the estimated battery temperature is greater than the maximum temperature value of the current temperature range; if so, cool the current temperature of the battery by turning on the battery cooling function so that the inlet water temperature of the battery reaches a first target cooling value to control the current charging rate of the battery.

13. The method according to claim 5, characterized in that The determining the current fast charging state type of the battery based on the first rate comparison result, the second rate comparison result, and the third rate comparison result includes: If the first rate comparison result is that the current charging rate is not less than the first adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the third rate comparison result is that the current charging rate is less than the third adjacent charging rate, it is determined that the current fast charging state type of the battery is the seventh state type; The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes: When it is determined that the current fast charging state type of the battery is the seventh state type, the current temperature of the battery is adjusted to the maximum temperature value of the current temperature range by turning on the battery heating function, so that the inlet water temperature of the battery reaches the first target heating value; Detecting whether a battery temperature rise rate of the battery is within a second preset temperature rise rate range at a preset time interval; If the battery temperature rise rate is within the second preset temperature rise rate range, the inlet water temperature of the battery is maintained at a first target heating value.

14. The method according to claim 13, characterized in that After the step of detecting whether the battery temperature rise rate of the battery is within a second preset temperature rise rate range at a preset time interval, the method further includes: If the battery temperature rise rate is not within the second preset temperature rise rate range, detecting whether the battery temperature rise rate of the battery is less than a minimum value within the second preset temperature rise rate range at a preset time interval; If the battery temperature rise rate is less than the minimum value of the second preset temperature rise rate range, the current temperature of the battery is adjusted to the maximum temperature value of the current temperature range by turning on the battery heating function, and the inlet water temperature of the battery reaches a second target heating value, wherein the second target heating value is greater than the first target heating value; If the battery temperature rise rate is not less than the minimum value of the second preset temperature rise rate range, the current temperature of the battery is adjusted to the maximum temperature value of the current temperature range by turning on the battery heating function, and the inlet water temperature of the battery reaches a third target heating value, wherein the third target heating value is less than the first target heating value.

15. The method according to claim 4, characterized in that The current charging area is composed of a current temperature range and a current charging progress range; Wherein, when the temperature change trend is a temperature decreasing trend, acquiring adjacent charging rates corresponding to adjacent areas according to the temperature change trend and the corresponding relationship includes: Determine a first charging progress interval adjacent to the current charging progress interval in an increasing direction of the charging progress value, and determine a fourth temperature interval adjacent to the current temperature interval in a decreasing direction of the temperature value; According to the corresponding relationship, a fourth adjacent charging rate corresponding to a fourth adjacent area is obtained, where the fourth adjacent area is composed of a fourth temperature interval and the current charging progress interval; According to the corresponding relationship, a second adjacent charging rate corresponding to the second adjacent area is obtained, where the second adjacent area is composed of the current temperature interval and the first charging progress interval; According to the corresponding relationship, a fifth adjacent charging rate corresponding to a fifth adjacent area is obtained, where the fifth adjacent area is composed of a fourth temperature interval and the first charging progress interval; The comparing the current charging rate with the adjacent charging rate to determine the current charging state type of the battery includes: Comparing the current charging rate with the fourth adjacent charging rate to obtain a fourth rate comparison result; Comparing the current charging rate with the second adjacent charging rate to obtain a second rate comparison result; Comparing the current charging rate with the fifth adjacent charging rate to obtain a fifth rate comparison result; Based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result, a current charging state type of the battery is determined.

16. The method according to claim 15, characterized in that The determining the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result includes: If the fourth rate comparison result is that the current charging rate is less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is less than the fifth adjacent charging rate, then the current charging state type of the battery is determined to be a ninth state type; The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes: When it is determined that the current charging state type of the battery is the ninth state type, the current temperature of the battery is adjusted to the minimum temperature value of the current temperature range by turning on the battery cooling function, so that the inlet water temperature of the battery reaches the first target cooling value, so as to increase the current charging rate of the battery.

17. The method according to claim 15, characterized in that The determining the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result includes: When the fourth rate comparison result is that the current charging rate is not less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is not less than the fifth adjacent charging rate, determining that the current charging state type of the battery is the tenth state type, and not turning on the battery heating function or the battery cooling function; or When the fourth rate comparison result is that the current charging rate is less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is not less than the fifth adjacent charging rate, it is determined that the current fast charging state type of the battery is the sixteenth state type, and the battery heating function or the battery cooling function is not turned on.

18. The method according to claim 15, characterized in that The determining the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result includes: If the fourth rate comparison result is that the current charging rate is less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is less than the fifth adjacent charging rate, then it is determined that the current charging state type of the battery is the eleventh state type; The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes: When it is determined that the current charging state type of the battery is the eleventh state type, the current temperature of the battery is adjusted to the minimum temperature value of the fourth temperature range by turning on the battery cooling function, so that the inlet water temperature of the battery reaches the second target cooling value to control the current charging rate of the battery.

19. The method according to claim 15, characterized in that The determining the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result includes: If the fourth rate comparison result is that the current charging rate is less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is not less than the fifth adjacent charging rate, then determining that the current charging state type of the battery is the twelfth state type; The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes: When it is determined that the current charging state type of the battery is the twelfth state type, obtaining a battery spontaneous heat dissipation rate of the battery, and calculating an estimated battery temperature corresponding to when the maximum charging critical value of the current charging area is reached according to the battery spontaneous heat dissipation rate; Determine whether the estimated battery temperature is less than the minimum temperature value of the current temperature range. If so, adjust the current temperature of the battery to the maximum temperature value of the current temperature range by turning on the battery heating function so that the inlet water temperature of the battery reaches the first target heating value to increase the current charging rate of the battery.

20. The method of claim 15, wherein: The determining the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result includes: If the fourth rate comparison result is that the current charging rate is not less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is less than the fifth adjacent charging rate, then it is determined that the current charging state type of the battery is the thirteenth state type; The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes: When it is determined that the current charging state type of the battery is the thirteenth state type, obtaining a battery spontaneous heat dissipation rate of the battery, and calculating an estimated battery temperature corresponding to a maximum charging critical value of the current charging area according to the battery spontaneous heat dissipation rate; Determine whether the estimated battery temperature is lower than the minimum temperature value of the current temperature range. If so, turn on the battery heating function to increase the current temperature of the battery so that the inlet water temperature of the battery reaches the first target heating value to increase the current charging rate of the battery.

21. The method of claim 20, wherein: After the step of determining whether the estimated battery temperature is lower than the minimum temperature value of the current temperature range, and if so, turning on the battery heating function to raise the current temperature of the battery so that the inlet water temperature of the battery reaches the first target heating value to control the current charging rate of the battery, the method further includes: Detecting whether a battery temperature drop rate of the battery is within a first preset temperature drop rate range at a preset time interval; If the battery temperature drop rate is within the first preset temperature drop rate range, the inlet water temperature of the battery will continue to be increased based on the first target heating value; If the battery temperature drop rate is not within a preset temperature drop rate range, the battery heating function is turned on to increase the current temperature of the battery so that the inlet water temperature of the battery reaches a second target heating value, wherein the second target heating value is greater than the first target heating value.

22. The method of claim 15, wherein: The determining the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result includes: If the fourth rate comparison result is that the current charging rate is not less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is not less than the fifth adjacent charging rate, then determining that the current charging state type of the battery is the fourteenth state type; The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes: When it is determined that the current charging state type of the battery is the twelfth state type, obtaining a battery spontaneous heat dissipation rate of the battery, and calculating an estimated battery temperature corresponding to when the maximum charging critical value of the current charging area is reached according to the battery spontaneous heat dissipation rate; Determine whether the estimated battery temperature is less than the minimum temperature value of the current temperature range. If so, turn on the battery heating function to increase the current temperature of the battery so that the inlet water temperature of the battery reaches the first target heating value to increase the current charging rate of the battery.

23. The method of claim 15, wherein: The determining the current charging state type of the battery based on the fourth rate comparison result, the second rate comparison result, and the fifth rate comparison result includes: If the fourth rate comparison result is that the current charging rate is not less than the fourth adjacent charging rate, the second rate comparison result is that the current charging rate is not less than the second adjacent charging rate, and the fifth rate comparison result is that the current charging rate is less than the fifth adjacent charging rate, then it is determined that the current charging state type of the battery is the fifteenth state type; The step of adjusting the current temperature of the battery according to the current charging state type to control the current charging rate of the battery includes: When it is determined that the current charging state type of the battery is a ninth state type, the current temperature of the battery is adjusted to a minimum temperature value of the current temperature range by turning on a battery cooling function so that the inlet water temperature of the battery reaches a first target cooling value, so as to control the current charging rate of the battery; Detecting whether a battery temperature drop rate of the battery is within a second preset temperature drop rate range at a preset time interval; If the battery temperature drop rate is within the second preset temperature drop rate range, the inlet water temperature of the battery is maintained at a first target cooling value.

24. The method of claim 23, wherein: After the step of detecting whether the battery temperature drop rate of the battery is within a second preset temperature drop rate range at a preset time interval, the method further includes: If the battery temperature drop rate is not within the second preset temperature drop rate range, detecting whether the battery temperature drop rate of the battery is less than a minimum value within the second preset temperature drop rate range at a preset time interval; If the battery temperature drop rate is less than the minimum value of the second preset temperature drop rate range, the current temperature of the battery is adjusted to the minimum temperature value of the current temperature range by turning on the battery cooling function, and the inlet water temperature of the battery is reduced to a second target cooling value, wherein the second target cooling zone value is less than the first target cooling value; If the battery temperature drop rate is not less than the minimum value of the second preset temperature drop rate range, the current temperature of the battery is adjusted to the minimum temperature value of the current temperature range by turning on the battery cooling function, and the inlet water temperature of the battery reaches a third target cooling value, wherein the third target cooling value is greater than the first target cooling value.

25. A battery charging management control device, characterized in that: include: an acquisition unit, configured to determine a current battery state of the battery, wherein the current battery state includes a current temperature and a current charging progress value; a determination unit, configured to determine a current fast charging state type of the battery from the battery fast charging rate table according to the current battery state, the battery fast charging rate table including a plurality of different charging state types, the charging state type being related to a charging progress value of the battery and a battery temperature; A control unit is used to adjust the current temperature of the battery according to the current charging state type to control the current charging rate of the battery.

26. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 24 is implemented.

27. A storage medium, wherein the storage medium is a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, wherein: When the computer program is executed by a processor, the method according to any one of claims 1 to 24 is implemented.

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