CN114361619A - Lithium battery pack power management method, system, storage medium and intelligent terminal - Google Patents

Abstract

The present application relates to a lithium battery pack power management method, system, storage medium and intelligent terminal, and relates to the field of lithium battery packs. The method includes acquiring current power information; calculating estimated charging power information; determining estimated charging duration information; obtaining lithium battery packs The current temperature information and critical temperature information; determine the charging critical duration information; compare the estimated charging duration information with the duration corresponding to the charging critical duration information; if it is less than, charge according to the estimated charging duration information; Time difference information; determine the cooling temperature information; the lithium battery pack is charged according to the time corresponding to the charging critical time information, and then stops charging until the current temperature reaches the cooling temperature information and continues to charge. The present application has the effect that the entire charging process is always below the critical temperature, and it is difficult to reach the temperature of the bulge, thereby improving the service life and safety of the lithium battery pack.

Description

Lithium battery pack power management method, system, storage medium and intelligent terminal

technical field

The present application relates to the field of lithium battery packs, and in particular, to a method, system, storage medium, and intelligent terminal for power management of lithium battery packs.

Background technique

Lithium battery is a kind of battery that uses lithium metal or lithium alloy as negative electrode material and uses non-aqueous electrolyte solution. Lithium battery can be reused during use. Lithium battery is charged. The lithium battery pack is composed of several lithium batteries, which are often used in small electric devices as the power supply of electric devices.

In the related art, for example, the Chinese patent with the publication number CN203285600U discloses a lithium battery pack, which includes a bracket for installing the lithium battery and a housing for installing the bracket, and the housing includes an upper cover and a lower cover that is threadedly fixed to the upper cover by bolts. , the lower cover is provided with a first mounting plate for bracket installation, a second mounting plate that is in contact with the inner side wall of the lower cover, and a stabilizing plate is also provided on the side of the lower cover away from the first mounting plate, and the upper cover is provided with There are several pressing pieces that are pressed against the bracket.

In view of the above-mentioned related technologies, the inventor believes that the temperature of the lithium battery pack increases gradually during the charging process. Once the temperature is too high and the lithium battery pack continues to maintain high-capacity energy exchange, it is easy to cause the battery in the lithium battery pack to bulge. Explosion may occur, there is a greater safety hazard, and there is still room for improvement.

SUMMARY OF THE INVENTION

In order to improve the energy exchange in which the lithium battery pack continues to maintain high power once the temperature is too high, it is easy to cause the battery in the lithium battery pack to bulge, and in severe cases, an explosion may occur, and there is a large potential safety hazard. This application provides lithium battery pack electrical energy A management method, system, storage medium and intelligent terminal.

In the first aspect, the present application provides a lithium battery pack power management method, which adopts the following technical solutions:

Lithium battery pack power management method, including:

Get the current power information of the lithium battery pack;

Calculate the estimated charging power information according to the current power information and the preset full power information;

Carry out matching analysis according to the charging duration stored in the preset duration management database and the estimated charging electric energy information to determine the charging duration required by the estimated charging electric energy information, and define the charging duration as the estimated charging duration information;

Obtain the current temperature information and critical temperature information of the lithium battery pack;

Matching analysis is performed according to the charging critical duration and the current temperature information and the critical temperature information stored in the preset temperature rise database to determine the charging critical duration corresponding to the current temperature information and the critical temperature information, and the charging critical duration is defined as the charging critical duration duration information;

Compare the estimated charging duration information with the duration corresponding to the charging critical duration information;

If the estimated charging duration information is less than the duration corresponding to the charging critical duration information, charging is performed according to the estimated charging duration information;

If the expected charging duration information is greater than the duration corresponding to the charging critical duration information, the difference between the expected charging duration information and the duration corresponding to the charging critical duration information is calculated, and the difference is defined as duration difference information;

Carry out matching analysis according to the low temperature temperature and duration difference information and critical temperature information stored in the warming database to determine the low temperature temperature corresponding to the duration difference information and the critical temperature information, and define the low temperature temperature as cooling temperature information;

The lithium battery pack is charged according to the duration corresponding to the charging critical duration information, and then stops charging until the current temperature reaches the cooling temperature information and continues charging.

By adopting the above technical solution, the cooling time and subsequent continuous charging are determined by judging the length of the charging time, so that the entire charging process is always below the critical temperature to control the temperature, and it is difficult to reach the temperature of the bulge, which improves the service life and safety of the lithium battery pack .

Optionally, the method for charging the lithium battery pack further includes:

Get the trigger time information entered by the user;

Determine whether the time corresponding to the trigger time information is less than the expected charging time information;

If it is greater than the estimated charging time information, the charging is performed according to the estimated charging time information;

If it is less than the estimated charging duration information, it is determined whether it is greater than the charging critical duration information;

If it is greater than the charging critical time length information, a matching analysis is performed according to the heating rate stored in the preset heating database and the critical temperature information to determine the heating rate corresponding to the critical temperature information, and the heating rate is defined as the first heating rate information ;

Carry out matching analysis according to the cooling rate stored in the preset cooling database and the first heating rate information to determine the cooling rate of the controlled constant temperature offset by the first heating rate information, and define the cooling rate as the first cooling rate information;

The lithium battery pack is charged according to the duration corresponding to the charging critical duration information, and then continues to charge and cools the lithium battery pack according to the first cooling rate information;

If it is less than the charging critical duration information, charging is performed according to the triggering time information.

By adopting the above technical solution, the user needs to use the time of the lithium battery pack to determine whether cooling intervention is required to ensure that the temperature is below the critical temperature, to ensure that the lithium battery is not easily exploded due to excessive temperature, and the safety and use of the lithium battery are improved. life.

Optionally, the method for cooling the lithium battery pack according to the cooling rate information includes:

Obtain the ambient temperature information of the lithium battery pack;

Determine whether the ambient temperature information is consistent with the temperature value corresponding to the current temperature information;

If the ambient temperature information is greater than the temperature value corresponding to the current temperature information, a matching analysis is performed according to the heating rate and the critical temperature information stored in the environmental impact database and the ambient temperature information to determine the heating rate corresponding to the critical temperature information and the ambient temperature information. , the heating rate is defined as the second heating rate information;

Carry out matching analysis according to the cooling rate and the second heating rate information stored in the cooling database to determine the cooling rate of the controlled constant temperature offset by the second heating rate information, and define the cooling rate as the second cooling rate information;

Calculate the sum of the first cooling rate information and the second cooling rate information, and define the sum as the total cooling rate information;

Cool the lithium battery pack according to the total cooling rate information;

If it is less than the temperature value corresponding to the current temperature information, the lithium battery pack is cooled according to the first cooling rate information.

By adopting the above technical solution, the influence of the outside world on the lithium battery pack can be judged by considering the difference between the ambient temperature and the temperature of the lithium battery pack, the cooling accuracy is more accurate, the time to reach the critical temperature is more accurate, and it is difficult to exist that the critical temperature has actually exceeded the critical temperature. temperature, but the actual cooling according to the first cooling rate information still exceeds the critical temperature, which improves the accuracy and stability of the cooling device.

Optionally, a further method for cooling the lithium battery pack according to the first cooling rate information includes:

Get the lithium battery number information in the lithium battery pack;

According to the matching analysis between the adjacent number stored in the preset adjacent database and the lithium battery number information, the adjacent number corresponding to the lithium battery number information is determined, and the adjacent number is defined as the adjacent number information;

Obtain the lithium battery number information and the surface temperature of the lithium battery corresponding to the adjacent number information respectively, define the surface temperature of the lithium battery corresponding to the lithium battery number information as the current surface temperature information, and define the lithium battery corresponding to the adjacent number information. The surface temperature of is defined as the adjacent surface temperature information;

Compare the current surface temperature information with the temperature corresponding to the adjacent surface temperature information;

If the current surface temperature information is greater than the temperature corresponding to the adjacent surface temperature information, open the positive one-way valve so that air can only flow from the lithium battery corresponding to the lithium battery number information to the lithium battery corresponding to the adjacent number information;

If the current surface temperature information is less than the temperature corresponding to the adjacent surface temperature information, open the negative one-way valve so that air can only flow from the lithium battery corresponding to the adjacent number information to the lithium battery corresponding to the lithium battery number information;

Screen out the lithium battery with the highest temperature and the lithium battery with the lowest temperature, define the number of the lithium battery with the highest temperature as the maximum number information, and define the number of the lithium battery with the lowest temperature as the minimum number information;

Cold air is blown in from the air inlet of the lithium battery corresponding to the information of the largest number according to the information of the first cooling rate, and blown out from the air outlet of the lithium battery corresponding to the information of the smallest number.

By adopting the above technical solution, the air is blown in from the lithium battery with the higher temperature, and the air after the heat exchange is blown out from the lithium battery with the lowest temperature, so that the heat exchange is performed on the lithium battery whose temperature decreases in turn during the whole process. The temperature difference gradually becomes smaller, the heat exchange efficiency is high and the heat exchange speed is fast, which improves the cooling efficiency.

Optionally, the number of adjacent number information corresponding to the current number information is at least two, and if the current surface temperature information is greater than or less than the temperature corresponding to all adjacent surface temperature information, the cooling method includes:

Determine whether the current surface temperature information is greater than the temperature corresponding to all adjacent surface temperature information;

If the current surface temperature information is greater than the temperature corresponding to all the adjacent surface temperature information, the adjacent surface temperature information corresponding to the adjacent number information is compared to obtain the adjacent surface temperature information with the highest temperature. The lithium battery corresponding to the adjacent surface temperature information is defined as the largest adjacent number information;

Determine whether the maximum adjacent number information is one;

If it is one, open the positive one-way valve so that air can only flow from the lithium battery corresponding to the lithium battery number information to the lithium battery corresponding to the largest adjacent number information;

If there are two or more, open the corresponding positive one-way valve at the same time so that air can only flow from the lithium battery corresponding to the lithium battery number information to the lithium battery corresponding to all the largest adjacent number information;

If the current surface temperature information is less than the temperature corresponding to all adjacent surface temperature information, the adjacent surface temperature information corresponding to the adjacent number information is compared to obtain the adjacent surface temperature information with the smallest temperature, and the minimum temperature The lithium battery corresponding to the adjacent surface temperature information is defined as the minimum adjacent number information;

Determine whether the minimum adjacent number information is one;

If it is one, open the negative one-way valve so that air can only flow from the lithium battery corresponding to the minimum adjacent number information to the lithium battery corresponding to the lithium battery number information;

If there are two or more, open the corresponding negative one-way valve at the same time so that air can only flow from the lithium battery corresponding to all the smallest adjacent number information to the lithium battery corresponding to the lithium battery number information.

By adopting the above technical solution, the area with higher temperature is preferentially satisfied, and then the corresponding area is opened when two or more areas meet the requirements, and the second area is opened after cooling, so that all cooling is performed from The area with higher temperature starts, the cooling temperature difference is large, and the cooling efficiency is high.

Optionally, if the current surface temperature information is greater than or less than the temperature corresponding to all adjacent surface temperature information, the further cooling method includes:

Obtain the number of positive one-way valves and the number of negative one-way valves, define the number of positive one-way valves as positive number information, and define the number of negative one-way valves as negative number information;

Calculate the positive number information and the negative number information to obtain the difference, and define the difference as the number difference information;

Determine whether the number difference information is positive;

If it is a positive number, calculate according to the number difference information and the first cooling rate information to obtain the total intake air speed information;

The air is discharged from the air outlet of the lithium battery corresponding to the current number information according to the total air intake speed information;

If it is a negative number, calculate according to the number difference information and the first cooling rate information to obtain the total gas outlet speed information;

The air is blown from the air inlet of the lithium battery corresponding to the current number information according to the total air outlet speed information.

By adopting the above technical solution, on the one hand, if the current intake air volume of the lithium battery is less than the air output volume, the air is supplemented from the air intake hole; The internal gas volume remains stable, the air pressure remains stable, the cooling rate is constant, and the cooling stability is improved; on the other hand, all the hot air can be discharged immediately, the cold air can be re-injected, and the temperature of the cold air after the heat exchange is reduced again. , improve the cooling efficiency.

Optionally, a further method for cooling the lithium battery pack includes:

Carry out matching analysis according to the natural cooling rate and ambient temperature information and current temperature information stored in the preset natural cooling database to determine the natural cooling rate corresponding to the ambient temperature information and the current temperature information, and define the natural cooling rate as natural cooling rate information;

The first cooling rate information is adjusted according to the natural cooling rate information.

By adopting the above technical solutions and considering the external natural cooling, the entire cooling rate can be precisely controlled, making full use of the cooling efficiency of the actual environment and saving a lot of energy.

In the second aspect, the present application provides a lithium battery pack power management system, which adopts the following technical solutions:

A lithium battery pack power management system, comprising:

The information acquisition module is used to acquire the current power information of the lithium battery pack;

The processing module, together with the information acquisition module and the judgment module, are used for information storage and processing;

The judgment module is used for the judgment module to compare the estimated charging duration information with the duration corresponding to the charging critical duration information;

The processing module calculates the estimated charging power information according to the current power information and the preset full power information;

The processing module performs matching analysis according to the charging duration stored in the preset duration management database and the estimated charging electric energy information to determine the charging duration required by the estimated charging electric energy information, and defines the charging duration as the estimated charging duration information;

The information acquisition module acquires the current temperature information and critical temperature information of the lithium battery pack;

The processing module performs matching analysis according to the charging critical duration and the current temperature information and the critical temperature information stored in the preset temperature rise database to determine the charging critical duration corresponding to the current temperature information and the critical temperature information, and the charging critical duration is defined as Charging critical time information;

If the judgment module judges that the estimated charging duration information is less than the duration corresponding to the charging critical duration information, the processing module performs charging according to the estimated charging duration information;

If the judging module determines that the estimated charging duration information is greater than the duration corresponding to the charging critical duration information, the processing module calculates the difference between the estimated charging duration information and the duration corresponding to the charging critical duration information, and defines the difference as duration difference information ;

The processing module performs matching analysis according to the low temperature temperature and time difference information and the critical temperature information stored in the heating database to determine the low temperature corresponding to the time length difference information and the critical temperature information, and defines the low temperature as cooling temperature information;

The processing module controls the lithium battery pack to be charged according to the duration corresponding to the charging critical duration information, and then stops charging until the current temperature reaches the cooling temperature information and continues charging.

By adopting the above technical solution, the cooling time and subsequent continuous charging are determined by judging the length of the charging time, so that the entire charging process is always below the critical temperature to control the temperature, and it is difficult to reach the temperature of the bulge, which improves the service life and safety of the lithium battery pack .

In the third aspect, the application provides an intelligent terminal, which adopts the following technical solutions:

An intelligent terminal includes a memory and a processor, and the memory stores a computer program that can be loaded by the processor and execute any of the above-mentioned lithium battery pack power management methods.

By adopting the above technical solution, the cooling time and subsequent continuous charging are determined by judging the length of the charging time, so that the entire charging process is always below the critical temperature to control the temperature, and it is difficult to reach the temperature of the bulge, which improves the service life and safety of the lithium battery pack .

In a fourth aspect, the present application provides a computer-readable storage medium capable of storing a corresponding program and featuring precise speed control.

A computer-readable storage medium adopts the following technical solutions:

A computer-readable storage medium stores a computer program capable of being loaded by a processor and executing any of the above-mentioned methods for managing power of a lithium battery pack.

By adopting the above technical solution, the cooling time and subsequent continuous charging are determined by judging the length of the charging time, so that the entire charging process is always below the critical temperature to control the temperature, and it is difficult to reach the temperature of the bulge, which improves the service life and safety of the lithium battery pack .

To sum up, the present application includes at least one of the following beneficial technical effects:

The whole charging process is always below the critical temperature, and it is not easy to reach the temperature of the bulge, which improves the service life and safety of the lithium battery pack;

In the whole process, the heat exchange is performed on the lithium batteries whose temperature decreases in turn, the temperature difference gradually becomes smaller, the heat exchange efficiency is high and the heat exchange speed is fast, and the cooling efficiency is improved.

Description of drawings

FIG. 1 is a flowchart of a method for managing electric energy of a lithium battery pack in an embodiment of the present application.

FIG. 2 is a flowchart of a method for charging a lithium battery pack in an embodiment of the present application.

FIG. 3 is a flowchart of a method for cooling a lithium battery pack according to cooling rate information in an embodiment of the present application.

FIG. 4 is a flowchart of a further method for cooling the lithium battery pack according to the first cooling rate information in the embodiment of the present application.

FIG. 5 is a flowchart of a cooling method when the current surface temperature information is greater than or less than the temperature corresponding to all adjacent surface temperature information in an embodiment of the present application.

FIG. 6 is a flowchart of a further cooling method when the current surface temperature information in the embodiment of the present application is greater than or less than the temperature corresponding to all adjacent surface temperature information.

FIG. 7 is a flowchart of a further method for cooling a lithium battery pack in an embodiment of the present application.

FIG. 8 is a block diagram of a method for managing electric energy of a lithium battery pack in an embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be described in further detail below with reference to the accompanying drawings 1-8 and the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Referring to FIG. 1, an embodiment of the present invention provides a lithium battery pack power management method. The main process of the lithium battery pack power management method is described as follows:

Step 100: Obtain current power information of the lithium battery pack.

The current power information is the information of the total power of the lithium battery pack, that is, the information of the remaining power of the entire lithium battery pack that can be provided to other electrical devices. It can be induced by any data transmission method. Since the lithium battery pack itself has voltage The relationship between the power and the power, so you only need to measure the voltage of the lithium battery pack to know the power of the lithium battery pack, and the tool used can be a voltmeter, etc.

Step 101 : Calculate the expected charging electric energy information according to the current electric energy information and the preset full electric energy information.

The full power information refers to the information of the power that can be stored in the lithium battery pack, which can be set manually, or it can be measured by the test results. The lithium battery can guarantee the maximum power in the normal working and charging state. The estimated charging power information is information about how much power is expected to be charged to reach a fully charged state. The calculation method is the numerical subtraction between the two, that is, the estimated charging power information L2=L-L1, where L is the full power information, and L1 is the current power information.

Step 102: Perform matching analysis according to the charging duration stored in the preset duration management database and the estimated charging electric energy information to determine the charging duration required by the estimated charging electric energy information, and define the charging duration as the estimated charging duration information.

The estimated charging duration information is information about the time required for charging with the current power and charging to the power corresponding to the full power information. The time management database stores the mapping relationship between the estimated charging time information and the estimated charging electric energy information. This database is for the staff in the field to observe and record the charging time from different power levels to full power during long-term work and testing. After the time, it will be stored and recorded. When the system calculates the estimated charging electric energy information, the system automatically finds the corresponding estimated charging time information from the database.

Step 103: Acquire current temperature information and critical temperature information of the lithium battery pack.

The current temperature information is the information of the surface temperature of the lithium battery pack during the charging process. The critical temperature information is the temperature that can maintain the normal state and normal function of the lithium battery pack, that is, if the temperature exceeds this temperature, it may cause the lithium battery pack to bulge or even explode, while at and below this temperature, it is not easy to explode. Case. The current method of acquiring temperature information is direct temperature detection, such as a temperature sensor. The method of obtaining the critical temperature information is artificial test operation, that is, the same type of lithium battery pack is tested under different temperature conditions, and then it is obtained by observing whether it produces bulge and other phenomena.

Step 104: Perform matching analysis according to the charging critical duration and the current temperature information and the critical temperature information stored in the preset temperature rise database to determine the charging critical duration corresponding to the current temperature information and the critical temperature information, and define the charging critical duration Information about the charging critical time.

The charging critical duration information is information of the charging duration required when the lithium battery is heated from the current temperature information to the critical temperature information during the charging process. The current temperature information and the mapping relationship between the critical temperature information and the charging critical duration are stored in the database, which are obtained through experiments by those in the field. When the corresponding current temperature information and critical temperature information are obtained, the system automatically finds the corresponding charging critical duration information from the database.

Step 105: Compare the expected charging duration information with the duration corresponding to the charging critical duration information.

The comparison method is a numerical comparison, and the purpose of the comparison is to determine whether the critical temperature will be exceeded if it is fully charged.

Step 1051: If the estimated charging duration information is less than the duration corresponding to the charging critical duration information, charging is performed according to the estimated charging duration information.

If the estimated charging duration information is less than the duration corresponding to the charging critical duration information, it means that even if the battery is fully charged, the critical temperature will not be reached, so charging can be performed directly until the battery is fully charged.

Step 1052: If the estimated charging duration information is greater than the duration corresponding to the charging critical duration information, calculate the difference between the estimated charging duration information and the duration corresponding to the charging critical duration information, and define the difference as duration difference information.

The duration difference information is information of the difference between the durations corresponding to the expected charging duration information and the charging critical duration information. If the estimated charging duration information is greater than the duration corresponding to the charging critical duration information, it means that if the charging is performed according to the estimated charging duration information, the temperature exceeds the critical temperature before reaching the fully charged state, which has certain risks. Cool down for the duration corresponding to the value information.

Step 106 : perform matching analysis according to the low temperature temperature, duration difference information and critical temperature information stored in the warming database to determine the low temperature temperature corresponding to the duration difference information and the critical temperature information, and define the low temperature temperature as cooling temperature information.

The cooling temperature information is information of the temperature before continuing charging after the natural cooling is performed after the duration corresponding to the charging critical duration information. The heating database also stores the time difference information and the mapping relationship between the critical temperature information and the cooling temperature information, that is, when the critical temperature and the time difference are known, the cooling starts after the charging critical time information and the time corresponding to the expected charging time information. The time between when the critical temperature is just reached and the minimum temperature drop can be calculated and experimentally obtained. When the user inputs the time difference information and the critical temperature information, the system automatically finds the corresponding cooling temperature information from the database.

Step 107 : the lithium battery pack is charged according to the duration corresponding to the charging critical duration information, and then stops charging until the current temperature reaches the cooling temperature information and continues charging.

Referring to FIG. 2, the method for charging the lithium battery pack further includes:

Step 200: Acquire trigger time information input by the user.

The trigger time information is the time when the user wants to charge, and the reason may be that the user needs to use it after this time. The way of obtaining is obtained by artificial input on the system side.

Step 201: Determine whether the time corresponding to the trigger time information is less than the expected charging duration information.

The method of judgment is numerical comparison, and the purpose of judgment is to confirm whether it can be filled.

Step 2011: If it is greater than the expected charging duration information, perform charging according to the expected charging duration information.

If it is greater than the expected charging time information, it means that the battery can be fully charged within the triggering time information. Then, the charging can be completed directly by charging according to the estimated charging time information without changing the time.

Step 2012: If it is less than the expected charging duration information, determine whether it is greater than the charging critical duration information.

If it is less than the estimated charging duration information, it means that the charging cannot be performed according to the estimated charging duration information, and it is necessary to judge whether the charging time corresponding to the triggering time information directly exceeds the critical duration information, resulting in the charging time being too long and exceeding the critical temperature.

Step 2021: If it is greater than the charging critical duration information, then perform matching analysis according to the heating rate stored in the preset heating database and the critical temperature information to determine the heating rate corresponding to the critical temperature information, and define the heating rate as the first heating rate. Heating rate information.

The first temperature increase rate information is information about the temperature increase rate when the temperature reaches the temperature corresponding to the critical temperature information. The mapping relationship between the heating rate information and the critical temperature information is stored in the heating database, which is the result obtained by the staff in the field according to repeated experiments. The magnitude of the temperature rise is calculated. If it is greater than the charging critical time information, it means that if the charging is performed according to the time corresponding to the trigger time information, the temperature will rise to the critical temperature or even above. information on the heating rate.

Step 2022: If it is less than the charging critical duration information, perform charging according to the triggering time information.

If it is less than the charging critical time information, it means that the charging according to the triggering time information will not reach the critical temperature, so the charging can be performed according to the triggering time information, although the power at this time cannot reach the full value or even the charging time.

Step 203: Perform matching analysis according to the cooling rate stored in the preset cooling database and the first heating rate information to determine the cooling rate of the controlled constant temperature offset by the first heating rate information, and define the cooling rate as the first cooling rate information .

The first cooling rate information is the information used to offset the first heating rate information so that the temperature rises to the temperature corresponding to the critical temperature information and maintains a constant temperature, here is the blowing rate information of the cold air, and the temperature of the cold air is lower than the outdoor temperature and Any temperature that can exist in a lithium battery pack. The cooling database stores the mapping relationship between the first cooling rate information and the first heating rate information, that is, when the user finds the corresponding first heating rate information from the heating database, the system automatically matches the corresponding cold air from the cooling database. The first cooling rate information is used for cooling the lithium battery pack rising to the critical temperature information.

Step 204 : the lithium battery pack is charged according to the duration corresponding to the charging critical duration information, and then continues to charge and cools the lithium battery pack according to the first cooling rate information.

3, the method for cooling the lithium battery pack according to the cooling rate information includes:

Step 300: Obtain ambient temperature information of the lithium battery pack.

The environmental temperature information is the environmental information of the charging place where the lithium battery pack is located. Since the lithium battery pack may have different charging positions during the charging process, the influence of the ambient temperature information on the lithium battery pack is also indispensable.

Step 301: Determine whether the ambient temperature information is consistent with the temperature value corresponding to the current temperature information.

The way of judgment is numerical comparison. It should be noted that the current temperature information refers to the temperature information inside the lithium battery pack itself, while the ambient temperature information refers to the information at the location where the lithium battery pack is charged. When there is a heat source, there will be an exchange process of internal and external temperature, so it is necessary to judge the direction of heat exchange through numerical comparison.

Step 3011: If the ambient temperature information is greater than the temperature value corresponding to the current temperature information, then a matching analysis is performed according to the heating rate and critical temperature information stored in the environmental impact database and the ambient temperature information to determine the critical temperature information and the corresponding ambient temperature information. The heating rate is defined as the second heating rate information.

The second heating rate information is the rate at which the environment heats the interior of the lithium battery pack when the temperature value corresponding to the ambient temperature information is greater than the temperature value corresponding to the current temperature information, and the second heating rate information here changes in real time. The environmental impact database stores the critical temperature information and the mapping relationship between the environmental temperature information and the second heating rate information. When the system obtains the critical temperature information and the environmental temperature information, the system automatically obtains the corresponding second heating rate from the environmental impact database. Rate information, where the rate is also the result of the second heating rate information obtained by those skilled in the art by performing simulation experiments on different critical temperature information and ambient temperature information, and then stored in the database. When the ambient temperature information is greater than the temperature value corresponding to the current temperature information, it means that there is a heat source in the environment with a higher temperature than the current temperature information.

Step 3012: If it is less than the temperature value corresponding to the current temperature information, cool the lithium battery pack according to the first cooling rate information.

If it is less than that, it means that there is no heating source in the environment that can affect the temperature of the lithium battery pack, it means that the ambient temperature does not affect the temperature rise of the battery in the lithium battery pack, so the cooling is performed according to the first cooling rate information. Can.

Step 302: Perform matching analysis according to the cooling rate and the second heating rate information stored in the cooling database to determine the cooling rate of the controlled constant temperature offset by the second heating rate information, and define the cooling rate as the second cooling rate information.

The second cooling rate information is the cooling rate information used to offset the second heating rate information so that the temperature rises to the temperature corresponding to the critical temperature information to maintain a constant temperature, here is the blowing rate information of the cold air, and the temperature of the cold air is lower than the outdoor temperature and Any temperature that can exist in a lithium battery pack. As in step 203, the corresponding second cooling rate information can be found from the database according to the second heating rate information.

Step 303: Calculate the sum of the first cooling rate information and the second cooling rate information, and define the sum as the total cooling rate information.

The total cooling rate information is the information about the rate of cooling under the influence of the ambient temperature. In this embodiment, it is the sum of the first cooling rate information and the second cooling rate information. The calculation method is obtained by adding the two together. Both the second cooling rate information and the first cooling rate information are constantly changing, and the total cooling rate information is also constantly changing.

Step 304: Cool the lithium battery pack according to the total cooling rate information.

4, a further method for cooling the lithium battery pack according to the first cooling rate information includes:

Step 400: Acquire information of the lithium battery number in the lithium battery pack.

The lithium battery number information is the information of the number of each lithium battery obtained by dividing each lithium battery in the lithium battery pack, and the lithium batteries are located in different spaces, distributed according to the layout of specific specifications, and then sequentially numbered. The main purpose of defining the lithium battery number information is to distinguish each lithium battery in it.

Step 401: Determine the adjacent number corresponding to the lithium battery number information according to the matching analysis between the adjacent number stored in the preset adjacent database and the lithium battery number information, and define the adjacent number as the adjacent number information .

The adjacent number information is information of the number of the adjacent lithium battery of the lithium battery corresponding to the lithium battery number information in the lithium battery pack. The mapping relationship between lithium battery number information and lithium battery number information is stored in the database. When users number lithium batteries, there are automatically adjacent lithium batteries and corresponding numbers. Therefore, the database is placed for lithium batteries in a specific order. It is obtained by human input after sorting.

Step 402: Obtain the surface temperature of the lithium battery corresponding to the lithium battery number information and the adjacent number information respectively, define the surface temperature of the lithium battery corresponding to the lithium battery number information as the current surface temperature information, and define the surface temperature of the lithium battery corresponding to the adjacent number information as the current surface temperature information. The surface temperature of the lithium battery is defined as the adjacent surface temperature information.

The current surface temperature information is the temperature information of the lithium battery surface corresponding to the lithium battery number information, here is the information in the grid where the lithium battery corresponding to the lithium battery number information is located, that is, each space is a closed space, That is, the temperature of each lithium battery in the environment is an independent temperature. The acquisition method is acquired in the space where each lithium battery is located, and there are baffles isolated from each other.

Step 403: Compare the current surface temperature information with the temperature corresponding to the adjacent surface temperature information.

The way of comparison is a numerical comparison between the two.

Step 4031: If the current surface temperature information is greater than the temperature corresponding to the adjacent surface temperature information, open the positive one-way valve so that air can only flow from the lithium battery corresponding to the lithium battery number information to the lithium battery corresponding to the adjacent number information. .

The positive one-way valve in this embodiment specifically refers to the information that after opening, the cold air can only flow from the lithium battery corresponding to the lithium battery number information to the valve of the lithium battery corresponding to the adjacent number information. If the current surface temperature information is greater than the temperature corresponding to the adjacent surface temperature information, it means that the temperature corresponding to the current surface temperature information is relatively high, and the temperature difference between the cold air and the position corresponding to the lithium battery number information is relatively large. When the cooling efficiency is high, the temperature cooling efficiency on the adjacent lithium battery is not as large as the demand for the position corresponding to the lithium battery number information, so the cold air flowing from the lithium battery number information to the adjacent number information can still cool the lithium battery. To the corresponding cooling capacity, so open the positive check valve.

Step 4032: If the current surface temperature information is less than the temperature corresponding to the adjacent surface temperature information, open the negative one-way valve so that air can only flow from the lithium battery corresponding to the adjacent number information to the lithium battery corresponding to the lithium battery number information. .

The negative one-way valve in this embodiment specifically refers to the information that the cold air can only flow from the lithium battery corresponding to the adjacent number information to the valve of the lithium battery corresponding to the lithium battery number information after it is opened. If the current surface temperature information is greater than the temperature corresponding to the adjacent surface temperature information, in the same way as in step 4031, the cold air flowing from the adjacent number information to the lithium battery number information can still have the corresponding cooling ability to the lithium battery , so open the negative one-way valve.

Step 404: Screen out the lithium battery with the highest temperature and the lithium battery with the lowest temperature, define the number of the lithium battery with the highest temperature as the maximum number information, and define the number of the lithium battery with the lowest temperature as the minimum number information.

The maximum number information is information of the number of the lithium battery with the highest temperature, and the minimum number information is the information of the number of the lithium battery with the lowest temperature. The purpose of the screening is to provide where the wind enters and exits the lithium battery pack.

Step 405 : blow cold air from the air inlet of the lithium battery corresponding to the information of the largest number according to the information of the first cooling rate, and blow out the air from the air outlet of the lithium battery corresponding to the information of the smallest number.

In this embodiment, the lithium batteries in the lithium battery pack are arranged in the same layer, that is, the lithium battery is surrounded by the lithium battery or the external environment, and then the front and rear sides are the external environment. Air holes and vents. Cold air enters from the air inlet hole corresponding to the lithium battery with the largest number information, and blows out from the air outlet hole corresponding to the smallest number information. It ensures that the cold air is exchanged with the highest temperature in the lithium battery at the first time, and then gradually cools other lithium batteries during the exchange process, ensuring the efficiency of the heat exchange of the lithium battery.

Referring to FIG. 5, there are at least two adjacent numbering information corresponding to the current numbering information. If the current surface temperature information is greater than or less than the temperature corresponding to all adjacent surface temperature information, the cooling method includes:

Step 500: Determine whether the current surface temperature information is greater than the temperature corresponding to all adjacent surface temperature information.

The purpose of the judgment is to determine whether the temperature of the current surface temperature information is the maximum value or the minimum value, or a temperature in the middle.

Step 5001: If the current surface temperature information is greater than the temperature corresponding to all adjacent surface temperature information, compare the adjacent surface temperature information corresponding to the adjacent number information to obtain the adjacent surface temperature information with the highest temperature, and The lithium battery corresponding to the adjacent surface temperature information with the highest temperature is defined as the largest adjacent number information.

The maximum adjacent number information is the information of the lithium battery with the highest temperature among the temperatures corresponding to the adjacent surface temperature information. The acquisition method is to compare the temperature values of adjacent numbered information, and then filter out the largest value. If the current surface temperature information is greater than the temperature corresponding to all adjacent surface temperature information, it means that the current temperature of the lithium battery is the largest. Lithium battery for maximum heat exchange efficiency.

Step 5002: If the current surface temperature information is less than the temperature corresponding to all adjacent surface temperature information, then compare the adjacent surface temperature information corresponding to the adjacent number information to obtain the adjacent surface temperature information with the smallest temperature, The lithium battery corresponding to the adjacent surface temperature information with the smallest temperature is defined as the minimum adjacent number information.

The minimum adjacent number information is the information of the lithium battery with the lowest temperature among the temperatures corresponding to the adjacent surface temperature information. The acquisition method is the numerical comparison of the temperature of adjacent numbered information, and then the smallest value is filtered out. If the current surface temperature information is less than the temperature corresponding to all adjacent surface temperature information, it means that the current lithium battery has the lowest temperature. Lithium battery for maximum heat exchange efficiency.

Step 501: Determine whether the maximum adjacent number information is one.

The purpose of the judgment is to determine whether two or more positive check valves need to be opened.

Step 5011: If there is one, open the positive one-way valve so that air can only flow from the lithium battery corresponding to the lithium battery number information to the lithium battery corresponding to the largest adjacent number information.

If it is one, you only need to open the space between the lithium battery of the lithium battery number information and the lithium battery corresponding to the largest adjacent number information, so that all the lithium batteries can be connected in series to form a gradually increasing temperature. An air duct that circulates in the direction of low temperature.

Step 5012: If there are two or more, open the corresponding positive one-way valve at the same time so that air can only flow from the lithium battery corresponding to the lithium battery number information to the lithium batteries corresponding to all the largest adjacent number information.

If it is two or more, it means that there are two or more, and the cold air flowing through one of them will reduce the efficiency when cooling the lithium battery of the same temperature. The two spaces are connected in parallel, so that the heat transfer is uniform and the heat transfer efficiency is consistent.

Step 502: Determine whether the minimum adjacent number information is one.

The purpose of the judgment is to determine whether two or more negative check valves need to be opened.

Step 5021: If there is one, open the negative one-way valve so that air can only flow from the lithium battery corresponding to the minimum adjacent number information to the lithium battery corresponding to the lithium battery number information.

If it is one, you only need to open the space between the lithium battery of the lithium battery number information and the lithium battery corresponding to the smallest adjacent number information, so that all the lithium batteries can be connected in series to form a gradually increasing temperature from a high temperature. An air duct that circulates in the direction of low temperature.

Step 5022: If there are two or more, open the corresponding negative one-way valve at the same time so that air can only flow from the lithium battery corresponding to all the minimum adjacent number information to the lithium battery corresponding to the lithium battery number information.

If it is two or more, it means that there are two or more, and the cold air flowing through one of them will reduce the efficiency when cooling the lithium battery of the same temperature. One space flows out, so that the two spaces are connected in parallel, so that the heat transfer is uniform and the heat transfer efficiency is consistent.

Referring to Figure 6: if the current surface temperature information is greater than or less than the temperature corresponding to all adjacent surface temperature information, the further cooling method includes:

Step 600: Obtain the number of positive check valves and the number of negative check valves, define the number of positive check valves as positive number information, and define the number of negative check valves as Negative number information.

The forward number information is information on the number of forward check valves after opening. The negative direction number information is the information of the number of negative direction check valves after opening. The acquisition method is the counting method, that is, when the positive one-way valve or the negative one-way valve is opened, and the corresponding message appears in the command, the counter counts once.

Step 601: Calculate the positive number information and the negative number information to obtain a difference, and define the difference as the number difference information.

The number difference information is information of the difference between the values corresponding to the positive number information and the negative number information. The calculation method is the number difference information △N=N+-N-, and N+ is the number corresponding to the positive number information. N- is the number corresponding to the negative number information.

Step 602: Determine whether the number difference information is positive.

The method of judgment is the comparison of numerical values, that is, when the value of △N is a positive number, the text corresponding to the number difference information is positive, and when the value of △N is negative, the text corresponding to the number difference information is negative. .

Step 6021: If it is a positive number, perform calculation according to the number difference information and the first cooling rate information to obtain the total intake air speed information.

The information on the total intake air speed is information on the difference in air volume between the cold air being blown into the adjacent spaces and then being blown out from the remaining adjacent spaces at a rate corresponding to the first cooling rate information. It is calculated by multiplying the two. If it is a positive value, it means that the cold air blown in is greater than the cold air blown out, and the difference of the intake air can be obtained by calculating the value here.

Step 6022: If it is a negative number, perform calculation according to the number difference information and the first cooling rate information to obtain the total gas outlet speed information.

If it is a negative number, as in step 6021, the difference value of the outgoing gas can be obtained through the number difference information and the first cooling rate information.

Step 603 : the gas is discharged from the gas outlet of the lithium battery corresponding to the current serial number information according to the total intake speed information.

When the corresponding total intake air information is obtained, in order to make the internal and external air flow evenly and have the same pressure, it is necessary to discharge air from the air outlet according to the speed corresponding to the total intake air speed information.

Step 604 : blow air from the air inlet hole of the lithium battery corresponding to the current serial number information according to the total air outlet speed information.

When the corresponding total outflow information is obtained, in order to make the internal and external air flow evenly and have the same pressure, it is necessary to carry out air intake from the air intake holes according to the speed corresponding to the total air intake speed information.

7 , a further method for cooling the lithium battery pack according to the first cooling rate information includes:

Step 700: Perform matching analysis according to the natural cooling rate and ambient temperature information stored in the preset natural cooling database and the current temperature information to determine the natural cooling rate corresponding to the ambient temperature information and the current temperature information, and define the natural cooling rate. for free cooling rate information.

The natural cooling rate information is information about the influence of the ambient temperature corresponding to the ambient temperature information on the natural cooling of the lithium battery pack. The database stores the environmental temperature information and the mapping relationship between the current temperature information and the natural cooling rate information. The database is the test of the heat dissipation of the lithium battery pack by the staff in the field under different ambient temperature information and current temperature information, and then obtained the result of. If the temperature is lowered according to the first cooling rate, the temperature of the lithium battery pack itself is greater than the temperature of the external environment, so the lithium battery pack itself will conduct heat dissipation and cooling under the influence of the ambient temperature.

Step 701: Adjust the first cooling rate information according to the natural cooling rate information.

Based on the same inventive concept, an embodiment of the present invention provides a lithium battery pack power management system, including:

8, a lithium battery pack power management system, including:

an information acquisition module 803, configured to acquire current power information of the lithium battery pack;

The processing module 801, together with the information acquisition module 803 and the judgment module 802, are used for information storage and processing;

The judgment module 802 is used for the judgment module 802 to compare the estimated charging duration information with the duration corresponding to the charging critical duration information;

The processing module 801 calculates the estimated charging power information according to the current power information and the preset full power information;

A cooling module 804, connected to the processing module 801, is used for cooling the lithium battery pack;

The processing module 801 performs matching analysis according to the charging duration stored in the preset duration management database and the estimated charging electric energy information to determine the charging duration required by the estimated charging electric energy information, and defines the charging duration as the estimated charging duration information;

The information acquisition module 803 acquires current temperature information and critical temperature information of the lithium battery pack;

The processing module 801 performs matching analysis according to the charging critical duration and the current temperature information and the critical temperature information stored in the preset temperature rise database to determine the charging critical duration corresponding to the current temperature information and the critical temperature information, and define the charging critical duration. is the charging critical time information;

If the judging module 802 judges that the estimated charging duration information is less than the duration corresponding to the charging critical duration information, the processing module 801 performs charging according to the estimated charging duration information;

If the judging module 802 judges that the estimated charging duration information is greater than the duration corresponding to the charging critical duration information, the processing module 801 calculates the difference between the estimated charging duration information and the duration corresponding to the charging critical duration information, and defines the difference as the duration difference value information;

The processing module 801 performs matching analysis according to the low temperature temperature and the time length difference information and the critical temperature information stored in the temperature rise database to determine the low temperature temperature corresponding to the time length difference information and the critical temperature information, and defines the low temperature temperature as the cooling temperature information;

The processing module 801 controls the lithium battery pack to be charged according to the duration corresponding to the charging critical duration information, and then stops charging until the current temperature reaches the cooling temperature information and continues charging.

Embodiments of the present invention provide a computer-readable storage medium storing a computer program capable of being loaded by a processor and executing a method for managing power of a lithium battery pack.

The computer storage medium includes, for example, a U disk, a removable hard disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk and other media that can store program codes.

Based on the same inventive concept, an embodiment of the present invention provides an intelligent terminal, including a memory and a processor, where the memory stores a computer program that can be loaded by the processor and execute a method for managing power of a lithium battery pack.

Those skilled in the art can clearly understand that, for the convenience and conciseness of the description, only the division of the above-mentioned functional modules is used for illustration. In practical applications, the above-mentioned functions can be allocated to different functional modules as required. The internal structure of the device is divided into different functional modules to complete all or part of the functions described above. For the specific working process of the system, apparatus and unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

The above are all preferred embodiments of the present application, which are not intended to limit the protection scope of the present application. Any feature disclosed in this specification (including the abstract and drawings), unless otherwise specified, may be equivalent to other or have similar The purpose replacement feature is replaced. That is, unless expressly stated otherwise, each feature is but one example of a series of equivalent or similar features.

Claims (10)

1. A lithium battery pack power management method, characterized in that, comprising: Get the current power information of the lithium battery pack; Calculate the estimated charging power information according to the current power information and the preset full power information; Carry out matching analysis according to the charging duration stored in the preset duration management database and the estimated charging electric energy information to determine the charging duration required by the estimated charging electric energy information, and define the charging duration as the estimated charging duration information; Obtain the current temperature information and critical temperature information of the lithium battery pack; Perform matching analysis according to the charging critical duration and current temperature information and critical temperature information stored in the preset temperature rise database to determine the charging critical duration corresponding to the current temperature information and the critical temperature information, and define the charging critical duration as the charging critical duration duration information; Compare the estimated charging duration information with the duration corresponding to the charging critical duration information; If the estimated charging duration information is less than the duration corresponding to the charging critical duration information, charging is performed according to the estimated charging duration information; If the expected charging duration information is greater than the duration corresponding to the charging critical duration information, the difference between the expected charging duration information and the duration corresponding to the charging critical duration information is calculated, and the difference is defined as duration difference information; Carry out matching analysis according to the low temperature temperature and duration difference information and critical temperature information stored in the warming database to determine the low temperature temperature corresponding to the duration difference information and the critical temperature information, and define the low temperature temperature as cooling temperature information; The lithium battery pack is charged according to the duration corresponding to the charging critical duration information, and then stops charging until the current temperature reaches the cooling temperature information and continues charging. 2. The lithium battery pack power management method according to claim 1, wherein the method for charging the lithium battery pack further comprises: Get the trigger time information entered by the user; Determine whether the time corresponding to the trigger time information is less than the expected charging time information; If it is greater than the estimated charging time information, the charging is performed according to the estimated charging time information; If it is less than the estimated charging duration information, it is determined whether it is greater than the charging critical duration information; If it is greater than the charging critical time length information, a matching analysis is performed according to the heating rate stored in the preset heating database and the critical temperature information to determine the heating rate corresponding to the critical temperature information, and the heating rate is defined as the first heating rate information ; Carry out matching analysis according to the cooling rate stored in the preset cooling database and the first heating rate information to determine the cooling rate of the controlled constant temperature offset by the first heating rate information, and define the cooling rate as the first cooling rate information; The lithium battery pack is charged according to the duration corresponding to the charging critical duration information, and then continues to charge and cools the lithium battery pack according to the first cooling rate information; If it is less than the charging critical duration information, charging is performed according to the triggering time information. 3. The lithium battery pack power management method according to claim 2, wherein the method for cooling the lithium battery pack according to the cooling rate information comprises: Obtain the ambient temperature information of the lithium battery pack; Determine whether the ambient temperature information is consistent with the temperature value corresponding to the current temperature information; If the ambient temperature information is greater than the temperature value corresponding to the current temperature information, a matching analysis is performed according to the heating rate and the critical temperature information stored in the environmental impact database and the ambient temperature information to determine the heating rate corresponding to the critical temperature information and the ambient temperature information. , the heating rate is defined as the second heating rate information; Carry out matching analysis according to the cooling rate and the second heating rate information stored in the cooling database to determine the cooling rate of the controlled constant temperature offset by the second heating rate information, and define the cooling rate as the second cooling rate information; Calculate the sum of the first cooling rate information and the second cooling rate information, and define the sum as the total cooling rate information; Cool the lithium battery pack according to the total cooling rate information; If it is less than the temperature value corresponding to the current temperature information, the lithium battery pack is cooled according to the first cooling rate information. 4. The lithium battery pack power management method according to claim 3, wherein the further method for cooling the lithium battery pack according to the first cooling rate information comprises: Obtain the lithium battery number information in the lithium battery pack; According to the matching analysis between the adjacent number stored in the preset adjacent database and the lithium battery number information, the adjacent number corresponding to the lithium battery number information is determined, and the adjacent number is defined as the adjacent number information; Obtain the lithium battery number information and the surface temperature of the lithium battery corresponding to the adjacent number information respectively, define the surface temperature of the lithium battery corresponding to the lithium battery number information as the current surface temperature information, and define the lithium battery corresponding to the adjacent number information. The surface temperature of is defined as the adjacent surface temperature information; Compare the current surface temperature information with the temperature corresponding to the adjacent surface temperature information; If the current surface temperature information is greater than the temperature corresponding to the adjacent surface temperature information, open the positive one-way valve so that air can only flow from the lithium battery corresponding to the lithium battery number information to the lithium battery corresponding to the adjacent number information; If the current surface temperature information is less than the temperature corresponding to the adjacent surface temperature information, open the negative one-way valve so that air can only flow from the lithium battery corresponding to the adjacent number information to the lithium battery corresponding to the lithium battery number information; Screen out the lithium battery with the highest temperature and the lithium battery with the lowest temperature, define the number of the lithium battery with the highest temperature as the maximum number information, and define the number of the lithium battery with the lowest temperature as the minimum number information; Cold air is blown in from the air inlet of the lithium battery corresponding to the information of the largest number according to the information of the first cooling rate, and blown out from the air outlet of the lithium battery corresponding to the information of the smallest number. 5. The lithium battery pack power management method according to claim 4, wherein the adjacent number information corresponding to the current number information is at least two, and if the current surface temperature information is greater than or less than all adjacent surface temperatures The cooling methods at the temperature corresponding to the information include: Determine whether the current surface temperature information is greater than the temperature corresponding to all adjacent surface temperature information; If the current surface temperature information is greater than the temperature corresponding to all the adjacent surface temperature information, the adjacent surface temperature information corresponding to the adjacent number information is compared to obtain the adjacent surface temperature information with the highest temperature. The lithium battery corresponding to the adjacent surface temperature information is defined as the largest adjacent number information; Determine whether the maximum adjacent number information is one; If it is one, open the positive one-way valve so that air can only flow from the lithium battery corresponding to the lithium battery number information to the lithium battery corresponding to the largest adjacent number information; If there are two or more, open the corresponding positive one-way valve at the same time so that air can only flow from the lithium battery corresponding to the lithium battery number information to the lithium battery corresponding to all the largest adjacent number information; If the current surface temperature information is less than the temperature corresponding to all adjacent surface temperature information, the adjacent surface temperature information corresponding to the adjacent number information is compared to obtain the adjacent surface temperature information with the smallest temperature, and the smallest temperature The lithium battery corresponding to the adjacent surface temperature information is defined as the minimum adjacent number information; Determine whether the minimum adjacent number information is one; If it is one, open the negative one-way valve so that air can only flow from the lithium battery corresponding to the minimum adjacent number information to the lithium battery corresponding to the lithium battery number information; If there are two or more, open the corresponding negative one-way valve at the same time so that air can only flow from the lithium battery corresponding to all the smallest adjacent number information to the lithium battery corresponding to the lithium battery number information. 6. The lithium battery pack power management method according to claim 5, wherein if the current surface temperature information is greater than or less than the temperature corresponding to all adjacent surface temperature information, the further cooling method comprises: Obtain the number of positive one-way valves and the number of negative one-way valves, define the number of positive one-way valves as positive number information, and define the number of negative one-way valves as negative number information; Calculate the positive number information and the negative number information to obtain the difference, and define the difference as the number difference information; Determine whether the number difference information is positive; If it is a positive number, calculate according to the number difference information and the first cooling rate information to obtain the total intake air speed information; The air is discharged from the air outlet of the lithium battery corresponding to the current number information according to the total air intake speed information; If it is a negative number, calculate according to the number difference information and the first cooling rate information to obtain the total gas outlet speed information; The air is blown from the air inlet of the lithium battery corresponding to the current number information according to the total air outlet speed information. 7. The lithium battery pack power management method according to claim 3, wherein the further method for cooling the lithium battery pack according to the first cooling rate information comprises: Carry out matching analysis according to the natural cooling rate and ambient temperature information and current temperature information stored in the preset natural cooling database to determine the natural cooling rate corresponding to the ambient temperature information and the current temperature information, and define the natural cooling rate as natural cooling rate information; The first cooling rate information is adjusted according to the natural cooling rate information. 8. A lithium battery pack power management system, characterized in that it includes: The information acquisition module is used to acquire the current power information of the lithium battery pack; The processing module, together with the information acquisition module and the judgment module, are used for information storage and processing; The judgment module is used for the judgment module to compare the estimated charging duration information with the duration corresponding to the charging critical duration information; The processing module calculates the estimated charging power information according to the current power information and the preset full power information; The processing module performs matching analysis according to the charging duration stored in the preset duration management database and the estimated charging electric energy information to determine the charging duration required by the estimated charging electric energy information, and defines the charging duration as the estimated charging duration information; The information acquisition module acquires the current temperature information and critical temperature information of the lithium battery pack; The processing module performs matching analysis according to the charging critical duration and the current temperature information and the critical temperature information stored in the preset temperature rise database to determine the charging critical duration corresponding to the current temperature information and the critical temperature information, and the charging critical duration is defined as Charging critical time information; If the judging module determines that the estimated charging duration information is less than the duration corresponding to the charging critical duration information, the processing module performs charging according to the estimated charging duration information; If the judging module determines that the estimated charging duration information is greater than the duration corresponding to the charging critical duration information, the processing module calculates the difference between the estimated charging duration information and the duration corresponding to the charging critical duration information, and defines the difference as duration difference information ; The processing module performs matching analysis according to the low temperature temperature and time difference information and the critical temperature information stored in the heating database to determine the low temperature corresponding to the time length difference information and the critical temperature information, and defines the low temperature as cooling temperature information; The processing module controls the lithium battery pack to be charged according to the duration corresponding to the charging critical duration information, and then stops charging until the current temperature reaches the cooling temperature information and continues charging. 9 . An intelligent terminal, comprising a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executes the power management method for a lithium battery pack according to any one of claims 1 to 7 . 10 . A computer-readable storage medium, characterized in that, a computer program capable of being loaded by a processor and executing the power management method for a lithium battery pack according to any one of claims 1 to 7 is stored thereon.

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