CN114361619B

CN114361619B - Lithium battery pack electric energy management method, system, storage medium and intelligent terminal

Info

Publication number: CN114361619B
Application number: CN202210014266.6A
Authority: CN
Inventors: 张贺鹏
Original assignee: Zhejiang Mingpeng New Energy Technology Co ltd
Current assignee: Zhejiang Mingpeng New Energy Technology Co ltd
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2023-07-18
Anticipated expiration: 2042-01-06
Also published as: CN114361619A

Abstract

The application relates to a lithium battery pack electric energy management method, a system, a storage medium and an intelligent terminal, and relates to the field of lithium battery packs; calculating the estimated charging electric energy information; determining predicted charging duration information; acquiring current temperature information and critical temperature information of a lithium battery pack; determining charging critical duration information; comparing the predicted charging duration information with the duration corresponding to the charging critical duration information; if the charging duration information is smaller than the preset charging duration information, charging is conducted according to the preset charging duration information; if the time length difference is larger than the preset time length difference, calculating time length difference information; determining cooling temperature information; and charging the lithium battery pack according to the time length corresponding to the charging critical time length information, and stopping charging until the current temperature reaches the cooling temperature information, and continuing charging. The application has the advantages that the whole charging process is always below the critical temperature, the bulge temperature is not easy to reach, and the service life of the lithium battery pack is prolonged, and the safety is improved.

Description

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

Technical Field

The application relates to the field of lithium battery packs, in particular to a lithium battery pack electric energy management method, a system, a storage medium and an intelligent terminal.

Background

The lithium battery is a battery which uses lithium metal or lithium alloy as a negative electrode material and uses nonaqueous electrolyte solution, the lithium battery can be repeatedly used in the using process, and after the electric energy in the lithium battery is used, the lithium battery can be charged through an external power supply, and the lithium battery pack consists of a plurality of lithium batteries and is often applied to a small-sized electric device to be used as a power supply of the electric device.

Among the related art, chinese patent publication No. CN203285600U discloses a lithium battery package, including the support of installation lithium battery, the casing of installing support, the casing includes the upper cover, carry out the lower cover of screw thread fixed through bolt and upper cover, be provided with the first mounting panel that supplies support mounting, the second mounting panel of being connected with the inside wall conflict of lower cover down, one side of keeping away from first mounting panel down is covered still is provided with the stabilizer, is provided with a plurality of compress tightly with the support conflict on the upper cover.

For the above related art, the inventors consider that the temperature of the lithium battery pack gradually increases during the charging process, and once the temperature is too high and the lithium battery pack continuously maintains energy exchange of high electric quantity, the battery pack is likely to bulge, and serious explosion may occur, so that there is a large potential safety hazard and room for improvement.

Disclosure of Invention

In order to improve the energy exchange that once the temperature is too high and the lithium battery pack continuously keeps high electric quantity, the battery pack is easy to bulge, serious explosion can be generated, and the problem of large potential safety hazard exists.

In a first aspect, the present application provides a method for managing electric energy of a lithium battery pack, which adopts the following technical scheme:

the lithium battery pack electric energy management method comprises the following steps:

acquiring current electric quantity information of a lithium battery pack;

calculating estimated charging electric energy information according to the current electric energy information and preset full electric energy information;

performing matching analysis according to the charging time length stored in the preset time length management database and the predicted charging electric energy information to determine the charging time length required by the predicted charging electric energy information, and defining the charging time length as the predicted charging time length information;

acquiring current temperature information and critical temperature information of a lithium battery pack;

performing matching analysis according to the charging critical time length, the current temperature information and the critical temperature information stored in the preset heating database to determine the charging critical time length corresponding to the current temperature information and the critical temperature information, and defining the charging critical time length as charging critical time length information;

Comparing the predicted charging duration information with the duration corresponding to the charging critical duration information;

if the predicted charging time length information is smaller than the time length corresponding to the charging critical time length information, charging according to the predicted charging time length information;

if the predicted charging time length information is larger than the time length corresponding to the charging critical time length information, calculating a difference value of the time length corresponding to the predicted charging time length information and the charging critical time length information, and defining the difference value as time length difference value information;

performing matching analysis according to the low-temperature and duration difference information and the critical temperature information stored in the heating database to determine the low-temperature corresponding to the duration difference information and the critical temperature information, and defining the low-temperature as cooling temperature information;

and charging the lithium battery pack according to the time length corresponding to the charging critical time length information, and stopping charging until the current temperature reaches the cooling temperature information, and continuing charging.

By adopting the technical scheme, the cooling time is determined by judging the charging time length and the subsequent continuous charging is performed, so that the whole charging process is always below the critical temperature, the temperature of the bulge is not easy to reach, and the service life and the safety of the lithium battery pack are improved.

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

acquiring trigger time information input by a user;

judging whether the time corresponding to the triggering time information is smaller than the predicted charging time length information or not;

if the charging duration information is greater than the predicted charging duration information, charging is carried out according to the predicted charging duration information;

if the charging duration information is smaller than the predicted charging duration information, judging whether the charging duration information is larger than the charging critical duration information or not;

if the charging time is greater than the charging critical duration information, performing matching analysis according to the temperature rising rate stored in the preset temperature rising database and the critical temperature information to determine the temperature rising rate corresponding to the critical temperature information, and defining the temperature rising rate as first temperature rising rate information;

performing matching analysis according to the preset cooling rate and the first heating rate information stored in the cooling database to determine the cooling rate of the constant temperature counteracted and controlled by the first heating rate information, and defining the cooling rate as first cooling rate information;

the lithium battery pack is charged according to the duration corresponding to the charging critical duration information, and then charging is continued and the lithium battery pack is cooled according to the first cooling rate information;

and if the charging time is smaller than the charging critical time length information, charging according to the triggering time information.

By adopting the technical scheme, whether cooling intervention is needed or not is determined by the time when a user needs to use the lithium battery pack, so that the lithium battery is ensured to be less than the critical temperature, the lithium battery is ensured to be not easy to explode due to overhigh temperature, and the safety and the service life of the lithium battery are improved.

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

acquiring environmental temperature information of a lithium battery pack;

judging whether the environmental temperature information is consistent with a temperature value corresponding to the current temperature information;

if the environmental temperature information is greater than the temperature value corresponding to the current temperature information, performing matching analysis according to the temperature rising rate, the critical temperature information and the environmental temperature information stored in the environmental impact database to determine the temperature rising rate corresponding to the critical temperature information and the environmental temperature information, and defining the temperature rising rate as second temperature rising rate information;

performing 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 control constant temperature counteracted by the second heating rate information, and defining the cooling rate as second cooling rate information;

calculating the sum of the first cooling rate information and the second cooling rate information, and defining the sum as total cooling rate information;

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

and if the temperature value is smaller than the temperature value corresponding to the current temperature information, cooling the lithium battery pack according to the first cooling rate information.

By adopting the technical scheme, the influence of the outside on the lithium battery pack is judged by considering the difference condition of the ambient temperature and the temperature of the lithium battery pack, the cooling precision is more accurate, the time for reaching the critical temperature is more accurate, the situation that the critical temperature is actually exceeded, but the temperature is actually reduced according to the first cooling rate information or exceeds the critical temperature is difficult to exist, and the accuracy and the stability of the cooling device are improved.

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

acquiring the number information of the lithium battery in the lithium battery pack;

according to the matching analysis of the adjacent number stored in the preset adjacent database and the lithium battery number information, determining the adjacent number corresponding to the lithium battery number information, and defining the adjacent number as the adjacent number information;

the method comprises the steps of respectively obtaining the surface temperature of the lithium battery corresponding to the number information of the lithium battery and the adjacent number information, defining the surface temperature of the lithium battery corresponding to the number information of the lithium battery as current surface temperature information, and defining the surface temperature of the lithium battery corresponding to the adjacent number information as adjacent surface temperature information;

Comparing the temperature corresponding to 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, opening the forward 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 smaller than the temperature corresponding to the adjacent surface temperature information, opening 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;

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

and blowing cold air into the lithium battery from the air inlet corresponding to the maximum number information according to the first cooling rate information, and blowing the cold air out of the air outlet corresponding to the minimum number information.

Through adopting above-mentioned technical scheme, will blow in the lithium cell higher from the temperature with wind, blow out the wind after finishing the heat exchange from the lithium cell that the temperature is minimum for the whole in-process carries out the heat exchange to the lithium cell that the temperature reduces in proper order, and the temperature difference diminishes gradually, and heat exchange efficiency is high and heat exchange is fast, has improved cooling efficiency.

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

judging whether the current surface temperature information is larger than the temperature corresponding to all the adjacent surface temperature information;

if the current surface temperature information is larger than the temperatures corresponding to all the adjacent surface temperature information, comparing the adjacent surface temperature information corresponding to the adjacent number information to obtain adjacent surface temperature information with the highest temperature, and defining the lithium battery corresponding to the adjacent surface temperature information with the highest temperature as the largest adjacent number information;

judging whether the maximum adjacent number information is one;

if the number is one, opening the forward one-way valve so that air can only flow from the lithium battery corresponding to the number information of the lithium battery to the lithium battery corresponding to the largest adjacent number information;

if the number of the lithium batteries is two or more, the corresponding forward check valves are opened at the same time, so that air can only flow from the lithium batteries corresponding to the number information of the lithium batteries to all the lithium batteries corresponding to the maximum adjacent number information;

if the current surface temperature information is smaller than the temperatures corresponding to all the adjacent surface temperature information, comparing the adjacent surface temperature information corresponding to the adjacent number information to obtain adjacent surface temperature information with minimum temperature, and defining the lithium battery corresponding to the adjacent surface temperature information with minimum temperature as the minimum adjacent number information;

Judging whether the minimum adjacent number information is one;

if the number is one, a negative check valve is opened, 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 the number of the lithium batteries is two or more, the corresponding negative check valves are opened at the same time, so that air can only flow from the lithium batteries corresponding to all the minimum adjacent number information to the lithium batteries corresponding to the lithium battery number information.

Through adopting above-mentioned technical scheme, the region that the priority satisfies the temperature higher then opens corresponding region when two or more than two regions satisfy the requirement, cools off then when the temperature all falls the back and is opening next region for all cooling is from the higher region of temperature, and the cooling difference in temperature is big, and cooling efficiency is high.

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

the method comprises the steps of obtaining the number of positive check valves and the number of negative check valves, defining the number of the positive check valves as positive number information, and defining the number of the negative check valves as negative number information;

calculating positive number information and negative number information to obtain a difference value, and defining the difference value as number difference value information;

Judging whether the number difference information is positive or not;

if the number is positive, calculating according to the number difference information and the first cooling rate information to obtain total air intake speed information;

the lithium battery is discharged from the gas outlet hole corresponding to the current number information according to the total gas inlet speed information;

if the number is negative, calculating according to the number difference value information and the first cooling rate information to obtain total air outlet speed information;

and blowing air from an air inlet hole of the lithium battery corresponding to the current number information according to the total air outlet speed information.

By adopting the technical scheme, on one hand, if the air inflow of the current lithium battery is smaller than the air outflow, air is supplemented from the air inflow hole, and if the air inflow of the current lithium battery is larger than the air outflow, the air is discharged from the air outflow hole, so that the air inflow in the lithium battery is kept stable, the air pressure is kept stable, the cooling rate is constant, and the cooling stability is improved; on the other hand, all hot air can be discharged immediately, and the cold air is flushed in again, so that the temperature of the cold air after heat exchange is reduced again, and the cooling efficiency is improved.

Optionally, the further method for cooling the lithium battery pack comprises:

according to the natural cooling rate, the environment temperature information and the current temperature information stored in the preset natural cooling database, carrying out matching analysis to determine the natural cooling rate corresponding to the environment temperature information and the current temperature information, and defining the natural cooling rate as natural cooling rate information;

And adjusting the first cooling rate information according to the natural cooling rate information.

By adopting the technical scheme, the condition of external natural cooling is considered, so that the whole cooling rate can be accurately controlled, the cooling efficiency of the actual environment is fully utilized, and a large amount of energy sources are saved.

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

a lithium battery pack power management system, comprising:

the information acquisition module is used for acquiring current electric quantity information of the lithium battery pack;

the processing module, the information acquisition module and the judging module are used for storing and processing information;

the judging module is used for comparing the predicted charging time length information with the time length corresponding to the charging critical time length information;

the processing module calculates estimated charging electric energy information according to the current electric quantity information and preset full electric quantity information;

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

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

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

if the judging module judges that the predicted charging time length information is smaller than the time length corresponding to the charging critical time length information, the processing module charges according to the predicted charging time length information;

if the judging module judges that the predicted charging time length information is larger than the time length corresponding to the charging critical time length information, the processing module calculates a difference value of the time length corresponding to the predicted charging time length information and the charging critical time length information, and the difference value is defined as time length difference value information;

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

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

In a third aspect, the present application provides an intelligent terminal, which adopts the following technical scheme:

an intelligent terminal comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and execute any lithium battery pack power management method.

In a fourth aspect, the present application provides a computer readable storage medium capable of storing a corresponding program, and having the feature of accurate speed control.

A computer readable storage medium, adopting the following technical scheme:

a computer readable storage medium storing a computer program capable of being loaded by a processor and executing any one of the above lithium battery pack power management methods.

In summary, the present application includes at least one of the following beneficial technical effects:

the whole charging process is always below the critical temperature, so that the temperature of the bulge is not easy to reach, and the service life and the safety of the lithium battery pack are improved;

in the whole process, the lithium battery with the temperature reduced in sequence is subjected to heat exchange, the temperature difference value is gradually reduced, the heat exchange efficiency is high, the heat exchange speed is high, and the cooling efficiency is improved.

Drawings

Fig. 1 is a flowchart of a lithium battery pack power management method in an embodiment of the present application.

Fig. 2 is a flow chart of a method of 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 flow chart of a further method of cooling a lithium battery pack according to first cooling rate information in an embodiment of the present application.

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

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

Fig. 7 is a flow chart of a further method of cooling a lithium battery pack in an embodiment of the present application.

Fig. 8 is a block diagram of a lithium battery pack power management method according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to fig. 1 to 8 and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

Embodiments of the invention are described in further detail below with reference to the drawings.

Referring to fig. 1, an embodiment of the present invention provides a method for managing lithium battery pack power, and a main flow of the method for managing lithium battery pack power is described as follows:

step 100: and acquiring current electric quantity information of the lithium battery pack.

The current electric quantity information is information of the total electric quantity of the lithium battery pack, namely the whole lithium battery pack still remains the information of the electric quantity which can be provided for other electric equipment, and the electric quantity of the lithium battery pack can be known only by measuring the voltage of the lithium battery pack due to the fact that the lithium battery pack has the relation between the voltage and the electric quantity in any data transmission induction mode, and the adopted tool can be a voltmeter and the like.

Step 101: and calculating the estimated charging electric energy information according to the current electric energy information and the preset full electric energy information.

The full-charge information is information of the charge which can be stored in the lithium battery pack, can be set manually, and can be measured according to test results, so that the lithium battery can ensure the maximum charge in normal operation and in a storage state. The estimated charging power information is information of a state in which it is estimated how much power is required to be charged to reach the full charge. The calculation mode is that the two are subtracted in numerical value, namely the predicted charging power information L2=L-L1, wherein L is full power information, and L1 is current power information.

Step 102: and carrying out matching analysis according to the charging time length stored in the preset time length management database and the predicted charging electric energy information to determine the charging time length required by the predicted charging electric energy information, and defining the charging time length as the predicted charging time length information.

The estimated charging duration information is information of time required for charging with the current power when the battery corresponding to the full battery information is full. The time length management database stores the mapping relation between the predicted charging time length information and the predicted charging electric energy information, and the database stores and records the time when the workers start charging from different electric quantities to full electric quantity by observing and recording in the long-time working and testing process. When the system calculates the predicted charging electric energy information, the system automatically searches the corresponding predicted charging duration information from the database.

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

The current temperature information is information of the surface temperature of the lithium battery pack in the charging process. The critical temperature information is a temperature capable of maintaining the normal state and normal function of the lithium battery pack, that is, a temperature exceeding which may cause the possibility of swelling or even explosion of the lithium battery pack, and a temperature below which explosion is not easy to occur. The current temperature information is obtained by direct temperature detection, such as a temperature sensor. The critical temperature information is obtained by manual test operation, namely, testing the lithium battery packs of the same model under different temperature conditions, and then observing whether the lithium battery packs generate bulges or not.

Step 104: and carrying out matching analysis according to the charging critical time length, the current temperature information and the critical temperature information stored in the preset heating database to determine the charging critical time length corresponding to the current temperature information and the critical temperature information, and defining the charging critical time length as charging critical time length information.

The charging critical time length information is information of charging time length required when the current temperature information is heated to the critical temperature information in the process of charging the lithium battery. The database stores the current temperature information and the mapping relation between the critical temperature information and the charging critical time length, and the mapping relation is obtained by the test of workers in the field. When the corresponding current temperature information and critical temperature information are obtained, the system automatically searches the corresponding charging critical duration information from the database.

Step 105: and comparing the predicted charging time length information with the time length corresponding to the charging critical time length information.

The comparison is made numerically in order to determine if the critical temperature is exceeded if full.

Step 1051: and if the predicted charging time length information is smaller than the time length corresponding to the charging critical time length information, charging according to the predicted charging time length information.

If the predicted charging duration information is smaller than the duration corresponding to the charging critical duration information, the fact that the critical temperature is not reached even if the electric quantity is full is indicated, and therefore charging can be directly conducted until the electric quantity is full.

Step 1052: if the predicted charging time length information is larger than the time length corresponding to the charging critical time length information, calculating a difference value of the time length corresponding to the predicted charging time length information and the charging critical time length information, and defining the difference value as time length difference value information.

The time length difference information is the information of the difference of the time length corresponding to the predicted charging time length information and the charging critical time length information. If the predicted charging duration information is greater than the duration corresponding to the charging critical duration information, the fact that if the charging is performed according to the predicted charging duration information, the full state temperature is not reached yet, namely the critical temperature is exceeded, and a certain risk exists, so that the cooling is needed in the duration corresponding to the duration difference information.

Step 106: and carrying out matching analysis according to the low-temperature and duration difference information and the critical temperature information stored in the temperature rise database to determine the low-temperature corresponding to the duration difference information and the critical temperature information, and defining the low-temperature as cooling temperature information.

The cooling temperature information is information of the temperature before continuous charging after natural cooling after the duration corresponding to the charging critical duration information. The temperature rise database also stores time length difference information and the mapping relation between critical temperature information and cooling temperature information, namely when the critical temperature and the time length difference are known, the lowest point of temperature reduction between the time when the critical time length information is charged and the time corresponding to the predicted charging time length information just reaches the critical temperature can be calculated and tested. When the user inputs the time length difference information and the critical temperature information, the system automatically searches the corresponding cooling temperature information from the database.

Step 107: and charging the lithium battery pack according to the time length corresponding to the charging critical time length information, and stopping charging until the current temperature reaches the cooling temperature information, and continuing charging.

Referring to fig. 2, the method of charging the lithium battery pack further includes:

step 200: and acquiring trigger time information input by a user.

The trigger time information is the manually entered time at which charging is desired, as it may be that the user needs to use after this time. The acquisition mode is obtained by manually inputting at the system end.

Step 201: and judging whether the time corresponding to the triggering time information is smaller than the predicted charging time information.

The mode of judgment is a comparison in numerical value, and the purpose of judgment is to confirm whether or not the filling is possible.

Step 2011: and if the charging time is greater than the predicted charging time information, charging according to the predicted charging time information.

If the charging time information is larger than the predicted charging time information, the electric quantity can be fully charged in the triggering time information. Charging can be completed directly according to the predicted charging time information without changing time.

Step 2012: if the charging duration information is smaller than the predicted charging duration information, judging whether the charging duration information is larger than the charging critical duration information or not.

If the charging time is smaller than the predicted charging time information, the fact that charging cannot be performed according to the predicted charging time information is indicated, and whether the charging time corresponding to the trigger time information exceeds the critical time information directly needs to be judged, so that the charging time is too long and exceeds the critical temperature.

Step 2021: if the temperature rise rate is larger than the charging critical duration information, performing matching analysis according to the temperature rise rate stored in the preset temperature rise database and the critical temperature information to determine the temperature rise rate corresponding to the critical temperature information, and defining the temperature rise rate as first temperature rise rate information.

The first temperature increase rate information is information of a rate at which the temperature increases when the temperature reaches a temperature corresponding to the critical temperature information. The temperature rise database stores the mapping relation between the temperature rise rate information and the critical temperature information, and is calculated by the staff in the field according to the result obtained by one time of test, namely, when the temperature reaches the critical temperature information, the mapping relation is obtained in unit time which can be obtained by human intervention, and the temperature rise amplitude is obtained. If the charging time information is greater than the charging critical time information, it is described that the charging is performed at a time corresponding to the trigger time information until the temperature reaches the critical temperature or higher, and the temperature is not more than the critical temperature in order to balance the heat, so that it is necessary to determine the temperature increase rate when the temperature reaches the critical temperature information.

Step 2022: and if the charging time is smaller than the charging critical time length information, charging according to the triggering time information.

If the charging time information is smaller than the charging critical time information, the charging according to the triggering time information is indicated that the critical temperature is not reached, so that the charging can be performed according to the triggering time information, and the electric quantity at the moment cannot reach the full-charge value or even cannot reach the charging time.

Step 203: and carrying out matching analysis according to the preset cooling rate and the first heating rate information stored in the cooling database to determine the cooling rate of the constant temperature counteracted and controlled by the first heating rate information, and defining the cooling rate as first cooling rate information.

The first cooling rate information is information of cooling rate for counteracting the first heating rate information to enable the temperature to be kept constant after the temperature is increased to the temperature corresponding to the critical temperature information, and here is air blowing rate information of cold air, and the temperature of the cold air is smaller than the outdoor temperature and any temperature which can exist in the lithium battery pack. The cooling database stores the mapping relation between the first cooling rate information and the first heating rate information, namely when a user searches the corresponding first heating rate information from the heating database, the system automatically matches the corresponding first cooling rate information of cold air from the cooling database so as to be used for cooling the lithium battery pack which is increased to the critical temperature information.

Step 204: and charging the lithium battery pack according to the duration corresponding to the charging critical duration information, and then continuously charging and cooling the lithium battery pack according to the first cooling rate information.

Referring to fig. 3, the method of cooling a lithium battery pack according to cooling rate information includes:

step 300: and acquiring the 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, and since the lithium battery pack may have different charging positions in the charging process, the influence of the environmental temperature information on the lithium battery pack is also indispensable.

Step 301: and judging whether the environmental temperature information is consistent with a temperature value corresponding to the current temperature information.

The judgment mode is a numerical comparison. It should be noted that the current temperature information refers to the temperature information inside the lithium battery pack itself, and the ambient temperature information refers to the information at the charging position of the lithium battery pack, when the lithium battery pack is charged in a certain place, if there is a heat source around, there is an exchange process of the internal and external temperatures, so that it is necessary to determine the direction of heat exchange through comparison of values.

Step 3011: if the environmental temperature information is greater than the temperature value corresponding to the current temperature information, performing matching analysis according to the temperature rising rate, the critical temperature information and the environmental temperature information stored in the environmental impact database to determine the temperature rising rate corresponding to the critical temperature information and the environmental temperature information, and defining the temperature rising rate as second temperature rising rate information.

The second temperature rising rate information is the rate of rising the temperature of the interior of the lithium battery pack by the environment when the temperature value corresponding to the environment temperature information is larger than the temperature value corresponding to the current temperature information, and the second temperature rising rate information changes in real time. The environment influence database stores critical temperature information and a mapping relation 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 corresponding second heating rate information from the environment influence database, wherein the speed is also a result of the second heating rate information obtained by simulation test of different critical temperature information and environmental temperature information by a person skilled in the art, and then the second heating rate information is stored in the database. When the environmental temperature information is greater than the temperature value corresponding to the current temperature information, it is indicated that the heat source with the temperature higher than the temperature corresponding to the current temperature information is influenced in the environment, so that the corresponding influence rate, namely the second temperature rising rate information, needs to be searched.

Step 3012: and if the temperature value is smaller than the temperature value corresponding to the current temperature information, cooling the lithium battery pack according to the first cooling rate information.

If the temperature is smaller than the first temperature reduction rate information, it is indicated that no heating source capable of influencing the temperature of the lithium battery pack exists in the environment, and it is indicated that the temperature of the environment does not influence the temperature rise of the battery in the lithium battery pack, so that the lithium battery pack is cooled according to the first temperature reduction rate information.

Step 302: and carrying 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 control constant temperature counteracted by the second heating rate information, and defining the cooling rate as second cooling rate information.

The second cooling rate information is information of cooling rate for counteracting the second heating rate information to enable the temperature to be kept constant after the temperature is increased to the temperature corresponding to the critical temperature information, and here is air blowing rate information of cold air, and the temperature of the cold air is smaller than the outdoor temperature and any temperature which can exist in the lithium battery pack. As in step 203, corresponding second cooling rate information may be found from the database according to the second heating rate information.

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

The total cooling rate information is information of the cooling rate under the influence of the environmental temperature, in this embodiment, the sum of the first cooling rate information and the second cooling rate information is calculated by adding the first cooling rate information and the second cooling rate information, and the same reason is that the second cooling rate information and the first cooling rate information are continuously changed, and the total cooling rate information is also continuously changed.

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

Referring to fig. 4, a further method of cooling a lithium battery pack according to first cooling rate information includes:

step 400: and acquiring the number information of the lithium battery in the lithium battery pack.

The lithium battery numbering information is information of the number of each lithium battery obtained by dividing each lithium battery in a lithium battery pack, distributing the lithium batteries in different spaces according to the layout of a specific specification and then numbering the lithium batteries in sequence, and the main purpose of defining the lithium battery numbering information is to distinguish each lithium battery inside.

Step 401: and according to matching analysis of the adjacent number stored in the preset adjacent database and the lithium battery number information, determining the adjacent number corresponding to the lithium battery number information, and defining the adjacent number as the adjacent number information.

The adjacent number information is information of numbers of adjacent lithium batteries of the lithium batteries corresponding to the lithium battery number information in the lithium battery pack. The database stores the mapping relation between the lithium battery numbering information and the lithium battery numbering information, when a user numbers the lithium batteries, adjacent lithium batteries and corresponding numbers automatically exist, and therefore the database is obtained by manually inputting the lithium batteries after the lithium batteries are placed and ordered according to a specific sequence.

Step 402: and respectively acquiring the surface temperature of the lithium battery corresponding to the number information of the lithium battery and the adjacent number information, defining the surface temperature of the lithium battery corresponding to the number information of the lithium battery as current surface temperature information, and defining the surface temperature of the lithium battery corresponding to the adjacent number information as adjacent surface temperature information.

The current surface temperature information is information of the temperature of the surface of the lithium battery corresponding to the lithium battery number information, and is information in a grid where the lithium battery corresponding to the lithium battery number information is located, namely, each space is a closed space, namely, the temperature of each lithium battery in the environment is independent. The acquisition mode is that each lithium battery is acquired in a space where the lithium battery is positioned, and baffle plates are arranged between the lithium batteries.

Step 403: and comparing the temperature corresponding to the current surface temperature information and the adjacent surface temperature information.

The comparison is made by comparing the values of the two.

Step 4031: if the current surface temperature information is greater than the temperature corresponding to the adjacent surface temperature information, the forward one-way valve is opened 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 forward check valve refers to the information that cold air can only flow from the lithium battery corresponding to the serial number information of the lithium battery to the valve of the lithium battery corresponding to the adjacent serial number information after being opened. If the current surface temperature information is greater than the temperature corresponding to the adjacent surface temperature information, the temperature corresponding to the current surface temperature information is higher, the temperature difference between the cold air and the position corresponding to the lithium battery serial number information is larger, the cooling efficiency is high when the cold air passes through the side, the temperature cooling efficiency requirement on the adjacent lithium battery is not greater than the requirement of the position corresponding to the lithium battery serial number information, so that the cold air flowing into the position corresponding to the adjacent serial number information from the lithium battery serial number information can still have the corresponding cooling capacity on the lithium battery, and the forward one-way valve is opened.

Step 4032: if the current surface temperature information is smaller than the temperature corresponding to the adjacent surface temperature information, the negative check valve is opened 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 check valve is particularly in this embodiment, and after the negative check valve is opened, 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. If the current surface temperature information is greater than the temperature corresponding to the adjacent surface temperature information, the cold air flowing into the lithium battery number information from the adjacent number information can still have the corresponding cooling capacity on the lithium battery, so that the negative check valve is opened, in the same way as in step 4031.

Step 404: and screening out the lithium battery with the highest temperature and the lithium battery with the lowest temperature, defining the number of the lithium battery with the highest temperature as the maximum number information, and defining 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 information of the number of the lithium battery with the lowest temperature. The purpose of the screening is to provide a location for wind to enter and exit the lithium battery pack.

Step 405: and blowing cold air into the lithium battery from the air inlet corresponding to the maximum number information according to the first cooling rate information, and blowing the cold air out of the air outlet corresponding to the minimum number information.

In this embodiment, the lithium batteries in the lithium battery pack are arranged in the same layer, that is, the lithium batteries or external environments are arranged around the lithium batteries, then the front and rear surfaces are both external environments, and the positions of the front and rear surfaces are correspondingly provided with the air inlet holes and the air outlet holes. Cold air enters from an air inlet corresponding to the lithium battery with the largest number information and is blown out from an air outlet corresponding to the lithium battery with the smallest number information. The method ensures the exchange between the cold air at the first time and the highest temperature in the lithium battery, and then gradually cools other lithium batteries in the exchange process, thereby ensuring the heat exchange efficiency of the lithium battery.

Referring to fig. 5, the cooling method for at least two adjacent number information corresponding to the current number information if the current surface temperature information is greater than or less than the temperatures corresponding to all the adjacent surface temperature information includes:

step 500: and judging whether the current surface temperature information is larger than the temperature corresponding to all the adjacent surface temperature information.

The purpose of the determination is to determine whether the temperature of the current surface temperature information is a maximum or minimum, or at an intermediate temperature.

Step 5001: if the current surface temperature information is larger than the temperatures 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, 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 information of the lithium battery with the highest temperature among temperatures corresponding to the adjacent surface temperature information. The mode of acquisition is that the temperature of adjacent numbered information is compared in numerical value, and then the maximum numerical value is screened out. If the current surface temperature information is greater than the temperatures corresponding to all the adjacent surface temperature information, the current lithium battery is the largest in temperature, and for better circulation, the current lithium battery should flow to the adjacent lithium battery with the temperature inferior to the current position so as to obtain the maximum heat exchange efficiency.

Step 5002: and if the current surface temperature information is smaller than the temperatures corresponding to all the adjacent surface temperature information, comparing the adjacent surface temperature information corresponding to the adjacent number information to acquire the adjacent surface temperature information with the minimum temperature, and defining the lithium battery corresponding to the adjacent surface temperature information with the minimum temperature as the minimum adjacent number information.

The minimum adjacent number information is information of the lithium battery with the lowest temperature among temperatures corresponding to the adjacent surface temperature information. The method is to compare the values of the temperatures of adjacent numbered information and then screen out the smallest value. If the current surface temperature information is smaller than the temperatures corresponding to all the adjacent surface temperature information, the current lithium battery is the lowest in temperature, and for better circulation, the current lithium battery should flow to the adjacent lithium battery with the temperature inferior to the current position so as to obtain the maximum heat exchange efficiency.

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

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

Step 5011: if the number of the lithium batteries is one, the forward check valve is opened, so that air can only flow from the lithium battery corresponding to the number information of the lithium batteries to the lithium battery corresponding to the largest adjacent number information.

If the number of the lithium batteries is one, only the space between the lithium battery with the number information of the lithium batteries and the lithium battery corresponding to the largest adjacent number information is required to be opened, and therefore all the lithium batteries can be connected in series to form an air duct which flows from the high temperature to the low temperature gradually.

Step 5012: if the number of the lithium batteries is two or more, the corresponding forward check valves are opened at the same time, so that air can only flow from the lithium battery corresponding to the number information of the lithium batteries to all the lithium batteries corresponding to the largest adjacent number information.

If the number of the cooling air flows into the two spaces at the same time, so that the two spaces are connected in parallel, the heat transfer is uniform, and the heat transfer efficiency is kept consistent.

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

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

Step 5021: if the number is one, the negative check valve is opened, 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 the number of the lithium batteries is one, only the space between the lithium battery with the number information of the lithium batteries and the lithium battery corresponding to the minimum adjacent number information is required to be opened, and therefore all the lithium batteries can be connected in series to form an air duct which flows from the high temperature to the low temperature gradually.

Step 5022: if the number of the lithium batteries is two or more, the corresponding negative check valves are opened at the same time, so that air can only flow from the lithium batteries corresponding to all the minimum adjacent number information to the lithium batteries corresponding to the lithium battery number information.

If the number of the cooling air flows from two spaces to more than two, the efficiency of cooling the lithium battery with the same temperature by cold air flowing through one of the cooling air flows is reduced, so that the cooling air flows out of the two spaces simultaneously for uniformity, the two spaces are connected in parallel, heat transfer is uniform, and the heat transfer efficiency is kept consistent.

Referring to fig. 6: the further cooling method when the current surface temperature information is larger or smaller than the temperatures corresponding to all the adjacent surface temperature information comprises the following steps:

step 600: the number of the positive check valves and the number of the negative check valves are obtained, the number of the positive check valves is defined as positive number information, and the number of the negative check valves is defined as negative number information.

The forward number information is information of the number of the opened forward check valves. The negative number information is the information of the number of the opened negative check valves. The acquisition mode is a counting mode, namely when the positive check valve or the negative check valve is opened, and corresponding information appears in the instruction, the counter counts up once.

Step 601: the positive number information and the negative number information are calculated to obtain a difference value, and the difference value is defined as number difference value information.

The number difference information is information of a difference value of numerical values corresponding to the positive number information and the negative number information. The calculation mode is that the number difference information delta N=N+ -N-, and N+ is the number corresponding to the forward number information. N-is the number corresponding to the negative number information.

Step 602: and judging whether the number difference information is positive.

The judgment mode is that the numerical values are compared, namely when the numerical value of delta N is positive, the characters corresponding to the numerical difference information are positive, and when the numerical value of delta N is negative, the characters corresponding to the numerical difference information are negative.

Step 6021: if the number is positive, calculating according to the number difference information and the first cooling rate information to obtain the total air intake speed information.

The total air intake speed information is information of an air volume difference value obtained by blowing cold air from adjacent spaces according to a speed corresponding to the first cooling speed information and then blowing the cold air from the other adjacent spaces. The way of calculation is the multiplication of the two. If the value is positive, the blown-in cold air is larger than the blown-out cold air, and the value of the value is calculated to obtain the difference value of the air intake.

Step 6022: and if the number is negative, calculating according to the number difference value information and the first cooling rate information to obtain the total air outlet speed information.

If the number is negative, the difference of the outlet air can be obtained through the number difference information and the first cooling rate information as in step 6021.

Step 603: and (3) performing air outlet according to the total air inlet speed information from the air outlet hole of the lithium battery corresponding to the current number information.

When the corresponding total air intake information is obtained, in order to make the internal and external air flow uniform and the pressure uniform, the air needs to be discharged from the air outlet holes according to the speed corresponding to the total air intake speed information.

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

When the corresponding total air outlet information is obtained, in order to make the internal and external air flow uniform and the pressure uniform, air needs to be fed from the air inlet hole according to the speed corresponding to the total air inlet speed information.

Referring to fig. 7, a further method of cooling a lithium battery pack according to first cooling rate information includes:

step 700: and carrying out matching analysis according to the natural cooling rate, the environment temperature information and the current temperature information stored in the preset natural cooling database to determine the natural cooling rate corresponding to the environment temperature information and the current temperature information, and defining the natural cooling rate as natural cooling rate information.

The natural cooling rate information is information of influence of the environment temperature corresponding to the environment temperature information on natural cooling of the lithium battery pack. The database is used for storing the mapping relation between the ambient temperature information and the current temperature information and the natural cooling rate information, and is a result obtained by testing the heat dissipation condition of the lithium battery pack under different ambient temperature information and current temperature information by workers in the field. If the lithium battery pack is cooled according to the first cooling rate, the temperature of the lithium battery pack is higher than the temperature of the external environment, so that the lithium battery pack can dissipate heat and cool under the influence of the ambient temperature.

Step 701: and adjusting 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:

referring to fig. 8, a lithium battery pack power management system includes:

an information obtaining module 803, configured to obtain current electric quantity information of the lithium battery pack;

a processing module 801, an information obtaining module 803 and a judging module 802, for storing and processing information;

the judging module 802 is configured to compare the predicted charging duration information with a duration corresponding to the charging critical duration information by using the judging module 802;

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

the cooling module 804 is connected with the processing module 801 and is used for cooling the lithium battery pack;

the processing module 801 performs matching analysis according to the charging duration and the predicted charging power information stored in the preset duration management database to determine a charging duration required by the predicted charging power information, and defines the charging duration as the predicted 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, the current temperature information and the critical temperature information stored in the preset heating database to determine the charging critical duration corresponding to the current temperature information and the critical temperature information, and defines the charging critical duration as charging critical duration information;

if the judging module 802 judges that the predicted charging time length information is smaller than the time length corresponding to the charging critical time length information, the processing module 801 charges according to the predicted charging time length information;

if the judging module 802 judges that the predicted charging time length information is greater than the time length corresponding to the charging critical time length information, the processing module 801 calculates a difference value between the predicted charging time length information and the time length corresponding to the charging critical time length information, and defines the difference value as time length difference value information;

The processing module 801 performs matching analysis according to the low-temperature and duration difference information and the critical temperature information stored in the heating database to determine a low-temperature corresponding to the duration difference information and the critical temperature information, and defines the low-temperature as 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 then 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 lithium battery pack power management method.

The computer storage medium includes, for example: a U-disk, a removable hard disk, a Read-only memory (ROM), a random access memory (RandomAccessMemory, RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.

Based on the same inventive concept, an embodiment of the present invention provides an intelligent terminal, including a memory and a processor, wherein the memory stores a computer program capable of being loaded by the processor and executing a lithium battery pack power management method.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional modules is illustrated, and in practical application, the above-described functional allocation may be performed by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to perform all or part of the functions described above. The specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which are not described herein.

The foregoing description of the preferred embodiments of the present application is not intended to limit the scope of the application, in which any feature disclosed in this specification (including abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.

Claims

1. The lithium battery pack electric energy management method is characterized by comprising the following steps:

acquiring current electric quantity information of a lithium battery pack;

charging the lithium battery pack according to the duration corresponding to the charging critical duration information, stopping charging until the current temperature reaches the cooling temperature information, and continuing charging;

the method for charging the lithium battery pack further comprises the following steps:

acquiring trigger time information input by a user;

if the charging time is smaller than the charging critical time length information, charging according to the triggering time information;

the method for cooling the lithium battery pack according to the cooling rate information comprises the following steps:

acquiring environmental temperature information of a lithium battery pack;

if the temperature value is smaller than the temperature value corresponding to the current temperature information, cooling the lithium battery pack according to the first cooling rate information;

the method for cooling the lithium battery pack according to the first cooling rate information further comprises the following steps:

blowing cold air from an air inlet of the lithium battery corresponding to the maximum number information according to the first cooling rate information, and blowing the cold air from an air outlet of the lithium battery corresponding to the minimum number information;

the cooling method for cooling the surface of the object comprises the following steps of:

judging whether the maximum adjacent number information is one;

if more than two positive check valves are opened, air can only flow from the lithium battery corresponding to the lithium battery serial number information to all the lithium batteries corresponding to the largest adjacent serial number information;

Judging whether the minimum adjacent number information is one;

if more than two negative check valves are opened, 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.

2. The method of claim 1, wherein the further cooling method if the current surface temperature information is greater than or less than the temperatures corresponding to all of the adjacent surface temperature information comprises:

judging whether the number difference information is positive or not;

3. The method of claim 1, further comprising the step of cooling the lithium battery pack according to the first cooling rate information, comprising:

4. Lithium battery package electric energy management system, its characterized in that includes:

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

the information acquisition module acquires trigger time information input by a user;

the judging module judges whether the time corresponding to the triggering time information is smaller than the predicted charging time length information or not;

if the judging module judges that the charging duration information is greater than the predicted charging duration information, the processing module controls the lithium battery pack to be charged according to the predicted charging duration information;

if the judging module judges that the charging duration information is smaller than the predicted charging duration information, the judging module judges whether the charging duration information is larger than the charging critical duration information or not;

if the judging module judges that the charging critical duration information is greater than the charging critical duration information, the processing module performs 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 the heating rate is defined as first heating rate information;

The processing module performs matching analysis according to the cooling rate and the first heating rate information stored in the preset cooling database to determine the cooling rate of the constant temperature counteracted and controlled by the first heating rate information, and defines the cooling rate as first cooling rate 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 continues to charge and cools the lithium battery pack according to the first cooling rate information;

if the judging module judges that the charging critical duration information is smaller than the charging critical duration information, the processing module controls the lithium battery pack to be charged according to the triggering time information;

the method for cooling the lithium battery pack by the processing module according to the cooling rate information comprises the following steps:

the information acquisition module acquires the environmental temperature information of the lithium battery pack;

the judging module judges whether the environmental temperature information is consistent with a temperature value corresponding to the current temperature information;

if the judging module judges that the environmental temperature information is larger than the temperature value corresponding to the current temperature information, the processing module performs matching analysis according to the temperature rising rate, the critical temperature information and the environmental temperature information stored in the environmental influence database to determine the temperature rising rate corresponding to the critical temperature information and the environmental temperature information, and the temperature rising rate is defined as second temperature rising rate information;

The processing module performs 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 control constant temperature counteracted by the second heating rate information, and defines the cooling rate as second cooling rate information;

the processing module calculates the sum of the first cooling rate information and the second cooling rate information, and defines the sum as total cooling rate information;

the processing module controls the lithium battery pack to cool the lithium battery pack according to the total cooling rate information;

if the judging module judges that the temperature value is smaller than the temperature value corresponding to the current temperature information, the processing module cools the lithium battery pack according to the first cooling rate information;

the further method for cooling the lithium battery pack by the processing module according to the first cooling rate information comprises the following steps:

the information acquisition module acquires the number information of the lithium battery in the lithium battery pack;

the processing module determines an adjacent number corresponding to the lithium battery number information according to matching analysis of the adjacent number stored in the preset adjacent database and the lithium battery number information, and defines the adjacent number as adjacent number information;

the information acquisition module is used for respectively acquiring the number information of the lithium battery and the surface temperature of the lithium battery corresponding to the adjacent number information, defining the surface temperature of the lithium battery corresponding to the number information of the lithium battery as current surface temperature information, and defining the surface temperature of the lithium battery corresponding to the adjacent number information as adjacent surface temperature information;

The judging module compares the current surface temperature information with the temperature corresponding to the adjacent surface temperature information;

if the judging module judges that the current surface temperature information is greater than the temperature corresponding to the adjacent surface temperature information, the processing module opens the forward 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 judging module judges that the current surface temperature information is smaller than the temperature corresponding to the adjacent surface temperature information, the processing module opens 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 processing module screens out the lithium battery with the highest temperature and the lithium battery with the lowest temperature, the number of the lithium battery with the highest temperature is defined as the maximum number information, and the number of the lithium battery with the lowest temperature is defined as the minimum number information;

the processing module blows cold air from an air inlet of the lithium battery corresponding to the maximum number information according to the first cooling rate information, and blows the cold air from an air outlet of the lithium battery corresponding to the minimum number information;

the cooling method for the cooling device comprises the following steps of:

The judging module judges whether the current surface temperature information is larger than the temperature corresponding to all the adjacent surface temperature information;

if the judging module judges that the current surface temperature information is larger than the temperatures corresponding to all the adjacent surface temperature information, the judging module compares the adjacent surface temperature information corresponding to the adjacent number information to obtain 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 judging module judges whether the maximum adjacent number information is one;

if the judging module judges that the number of the lithium battery is one, the processing module opens the forward one-way valve so that air can only flow from the lithium battery corresponding to the number information of the lithium battery to the lithium battery corresponding to the largest adjacent number information;

if the judging module judges that more than two positive check valves are arranged, the processing module opens corresponding positive check valves simultaneously so that air can only flow from the lithium batteries corresponding to the lithium battery serial number information to all the lithium batteries corresponding to the largest adjacent serial number information;

if the judging module judges that the current surface temperature information is smaller than the temperatures corresponding to all the adjacent surface temperature information, the judging module compares the adjacent surface temperature information corresponding to the adjacent number information to obtain adjacent surface temperature information with the minimum temperature, and the lithium battery corresponding to the adjacent surface temperature information with the minimum temperature is defined as the minimum adjacent number information;

The judging module judges whether the minimum adjacent number information is one;

if the judging module judges that the number is one, the processing module opens 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 the judging module judges that more than two negative check valves are arranged, the processing module opens the corresponding negative check valves simultaneously so that air can only flow from the lithium batteries corresponding to all the minimum adjacent number information to the lithium batteries corresponding to the lithium battery number information.

5. An intelligent terminal comprising a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute the lithium battery pack power management method according to any one of claims 1 to 3.

6. A computer-readable storage medium, characterized in that a computer program capable of being loaded by a processor and executing the lithium battery pack power management method according to any one of claims 1 to 3 is stored.