WO2023103070A1

WO2023103070A1 - Battery charging control method and apparatus, electronic device and storage medium

Info

Publication number: WO2023103070A1
Application number: PCT/CN2021/139594
Authority: WO
Inventors: 高岩峰
Original assignee: 歌尔股份有限公司
Priority date: 2021-12-09
Filing date: 2021-12-20
Publication date: 2023-06-15
Also published as: CN114123427B; CN114123427A

Abstract

A battery charging control method. The battery charging control method comprises: if a power supply apparatus enters a constant-current charging state, obtaining the battery temperature of a battery in the power supply apparatus (S101); determining a target charging current corresponding to the battery according to the battery temperature, and setting the battery having the highest charging priority as a target battery (S102), wherein the target charging current is positively correlated with the charging priority; and performing constant-current charging on the target battery (S103). According to the method, the battery having the maximum charging current in the power supply apparatus is charged, such that the charging efficiency of the battery can be improved.

Description

A battery charging control method, device, electronic equipment and storage medium

This application claims the priority of the Chinese patent application with the application number 202111501640.7 and the title of the invention "a battery charging control method, device, electronic equipment and storage medium" submitted to the China Patent Office on December 9, 2021, the entire content of which Incorporated in this application by reference.

technical field

The present application relates to the technical field of power management, and in particular to a battery charging control method, device, electronic equipment and storage medium.

Background technique

With the development of science and technology, mobile phones, laptops, smart wearable devices and other portable electronic devices can be seen everywhere. In order to improve the service life of the electronic device, in the related art, a plurality of batteries (such as a main battery and a secondary battery) that can independently supply power to the electronic device are usually provided in the electronic device.

When charging an electronic device including multiple batteries, the batteries are usually charged one by one in a fixed order, for example, the main battery is charged first, and then the auxiliary battery is charged after the main battery is fully charged. However, the charging efficiency of the above-mentioned charging method is low, which cannot meet the user's demand for fast charging.

Therefore, how to improve the charging efficiency of the battery is a technical problem to be solved by those skilled in the art.

Contents of the invention

The purpose of the present application is to provide a battery charging control method, device, electronic equipment and storage medium, which can improve the charging efficiency of the battery.

In order to solve the above technical problems, the present application provides a battery charging control method, the battery charging control method includes:

If the power supply device enters the constant current charging state, then obtain the battery temperature of the battery in the power supply device;

Determine the target charging current corresponding to the battery according to the battery temperature, and set the battery with the highest charging priority as the target battery; wherein, the target charging current is positively correlated with the charging priority;

Charge the target battery with a constant current.

Optionally, setting the battery with the highest charging priority as the target battery includes:

sorting the batteries according to the magnitude of the target charging current;

judging whether the number of batteries with the largest target charging current is 1;

If so, setting the battery with the highest target charging current as the battery with the highest charging priority, and setting the battery with the highest charging priority as the target battery;

If not, set the battery with the highest battery type weight among the batteries with the largest target charging current as the battery with the highest charging priority, and set the battery with the highest charging priority as the target battery.

Optionally, the battery in the power supply device includes a main battery and at least one secondary battery, and the battery type weight of the main battery is higher than the battery type weight of the secondary battery.

Optionally, determining the target charging current corresponding to the battery according to the battery temperature includes:

Obtaining the constant current charging rules of each of the batteries; wherein, the constant current charging rules include the corresponding relationship between the charging temperature range and the charging current;

Query the target charging current corresponding to the battery temperature according to the constant current charging rule.

Optionally, after charging the target battery with a constant current, the method further includes:

Setting the charging temperature range corresponding to the charging start time of the target battery as the reference temperature range;

judging whether the current battery temperature of the target battery is higher than the maximum value of the reference temperature range;

If the current battery temperature of the target battery is higher than the maximum value of the reference temperature range, then according to the constant current charging rule of the target battery, determine the charging current corresponding to the charging temperature range where the current battery temperature of the target battery is located Whether it is greater than the charging current corresponding to the reference temperature range;

If the charging current corresponding to the charging temperature interval where the current battery temperature of the target battery is located is greater than the charging current corresponding to the reference temperature interval, continue to charge the target battery with a constant current;

If the charging current corresponding to the charging temperature range where the current battery temperature of the target battery is located is less than or equal to the charging current corresponding to the reference temperature range, then determine a new target battery so as to perform constant current charging for the new target battery .

Optionally, the determining a new target battery includes:

Update the target charging current of the battery;

Setting the battery that meets the first constraint condition as an alternative battery; wherein, the first constraint condition is: the current target charging current of the alternative battery is greater than the current target charging current of the target battery, and the corresponding The target charging current in the next charging temperature interval is greater than the current target charging current of the target battery;

Setting the battery that meets the second constraint condition and the third constraint condition as an alternative battery; wherein, the second constraint condition is that the current target charging current of the alternative battery is greater than the current target charging current of the target battery, and the standby The target charging current of the next charging temperature range corresponding to the selected battery is equal to the current target charging current of the target battery; the third constraint condition is the maximum value of the current charging temperature range of the candidate battery and the current battery temperature of the candidate battery The difference is greater than the preset value;

judging whether the alternative battery exists;

If so, setting the candidate battery as the new target battery;

If not, continue to charge the target battery with a constant current.

According to the battery arrangement position of the power supply device, the battery farthest from the target battery is selected as the power supply battery, so as to provide electric energy for other devices through the power supply battery.

The present application also provides a battery charging control device, which includes:

A temperature acquisition module, configured to obtain the battery temperature of the battery in the power supply device if the power supply device enters a constant current charging state;

A battery setting module, configured to determine a target charging current corresponding to the battery according to the battery temperature, and set the battery with the highest charging priority as the target battery; wherein, the target charging current is positively correlated with the charging priority;

The charging control module is used to charge the target battery with a constant current.

The present application also provides a storage medium on which a computer program is stored, and when the computer program is executed, the steps performed by the above battery charging control method are realized.

The present application also provides an electronic device, including a power supply device, a memory and a processor, the power supply device includes at least two batteries, a computer program is stored in the memory, and the processor calls the computer program in the memory The steps performed by the above battery charging control method are realized at the same time.

The present application provides a battery charging control method, including: if the power supply device enters the constant current charging state, obtaining the battery temperature of the battery in the power supply device; wherein, the number of batteries in the charging state in the power supply device is less than or Equal to 1; determine the target charging current corresponding to the battery according to the battery temperature, and set the battery with the highest charging priority as the target battery; wherein, the target charging current is positively correlated with the charging priority; stream charging.

In this application, when the power supply device enters the constant current charging state, the battery temperature of the battery in the power supply device is obtained. The charging current of the constant current charging is affected by the battery temperature. Target charging current during charging. The higher the charging current, the higher the charging efficiency of the battery. Therefore, the application determines the charging priority of the battery based on the target charging current, and then sets the battery with the highest charging priority as the target battery, so as to charge the target battery with the highest charging efficiency. In this application, the battery with the highest charging efficiency in the power supply device can be charged, which improves the charging efficiency of the battery. The present application also provides a battery charging control device, a storage medium and an electronic device, which have the above-mentioned beneficial effects, and will not be repeated here.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only The accompanying drawings are a part of this application, and those skilled in the art can obtain other drawings according to the provided drawings without creative work.

FIG. 1 is a flow chart of a battery charging control method provided in an embodiment of the present application;

Fig. 2 is a flow chart of the first battery switching charging method provided by the embodiment of the present application;

FIG. 3 is a flow chart of the second battery switching charging method provided by the embodiment of the present application;

FIG. 4 is a flow chart of the third battery switching charging method provided by the embodiment of the present application;

FIG. 5 is a flow chart of the fourth battery switching charging method provided by the embodiment of the present application;

FIG. 6 is a schematic structural diagram of a battery charging control device provided by an embodiment of the present application.

Detailed ways

The following will describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Please refer to FIG. 1 below. FIG. 1 is a flowchart of a battery charging control method provided by an embodiment of the present application.

Specific steps can include:

S101: If the power supply device enters the constant current charging state, obtain the battery temperature of the battery in the power supply device;

This embodiment can be used in electronic devices with power supply devices, such as: mobile phones, VR (Virtual Reality, virtual reality) headsets, AR glasses, earphones, and the like. The above-mentioned power supply device includes at least two batteries that can independently supply power to other devices, and the batteries in the power supply device can work together or independently. In this embodiment, the number of batteries in the charging state in the power supply device is less than or equal to 1, that is, at most one battery is charged at the same time, so as to ensure the highest charging efficiency of the battery.

Before this step, there may be an operation of receiving the constant current charging signal or judging whether the power supply device enters the constant current charging state. If the power supply device enters the constant current charging state, the battery temperature of the battery in the power supply device can be obtained.

S102: Determine the target charging current corresponding to the battery according to the battery temperature, and set the battery with the highest charging priority as the target battery;

Among them, in the constant current charging stage, the charging current of the battery is related to the temperature of the battery. For example, 10° to 40° is the best charging temperature range of the battery. When the battery temperature is less than 10°, the charging current is 2A. The charging current is 5A when the temperature is within 10°～40°, and the charging current is 1A when the battery temperature is greater than 40°. In this embodiment, the corresponding relationship between the battery temperature and the charging point current can be set in advance, so after the battery temperature of each battery is obtained in S101, the target charging current corresponding to the battery can be determined according to the battery temperature. The above-mentioned target charging current refers to the actual charging current when the battery at the temperature is charged with a constant current.

It can be understood that the greater the charging current in the constant current charging process, the higher the charging efficiency of the battery, and the present application can determine the charging priority of each battery at the current battery temperature according to the relationship between the target charging current and the charging priority. The above-mentioned target charging current is positively correlated with the charging priority, that is, if other conditions remain unchanged, the greater the target charging current of the battery, the higher the charging priority of the battery.

S103: Charge the target battery with a constant current.

In this embodiment, the battery with the highest charging priority is set as the target battery, and the battery in the power supply device can be charged with the largest charging current, which improves the overall charging efficiency of the power supply device.

When the target battery is charged with a constant current, the power supply device can use other batteries for power supply. Because a certain amount of heat will be generated during the battery power supply process, and the temperature rise of other batteries will affect the temperature of the target battery, so in order to improve the charging efficiency of the battery, this embodiment can charge the target battery with a constant current. For example, according to the battery arrangement position of the power supply device, the battery farthest from the target battery can be selected as the power supply battery, so as to provide electric energy for other devices through the power supply battery.

In this embodiment, when the power supply device enters the constant current charging state, the battery temperature of the battery in the power supply device is obtained. The charging current of the constant current charging is affected by the battery temperature. In this embodiment, it is determined according to the battery temperature of each battery. Target charging current during constant current charging. The larger the charging current, the higher the charging efficiency of the battery, so this embodiment determines the charging priority of the battery based on the target charging current, and then sets the battery with the highest charging priority as the target battery, so as to charge the target battery with the highest charging efficiency . In this embodiment, the battery with the highest charging efficiency in the power supply device can be charged, which improves the charging efficiency of the battery.

As a further introduction to the embodiment corresponding to Figure 1, this embodiment can determine the priority of the battery and set the target battery in the following manner: sort the batteries according to the size of the target charging current; judge the target charging current Whether the maximum number of batteries is 1; if so, the battery with the largest charging current of the target is set as the battery with the highest charging priority, and the battery with the highest charging priority is set as the target battery; if not, all Among the batteries with the largest target charging current, the battery with the highest battery type weight is set as the battery with the highest charging priority, and the battery with the highest charging priority is set as the target battery.

Specifically, in the above embodiment, the battery with the largest target charging current is determined first. If there is only one battery with the highest target charging current, the battery with the highest target charging current can be directly set as the battery with the highest charging priority. , there is no need to determine the charging priority of other batteries at this time. In this application, the battery with the highest charging priority is set as the target battery, so as to perform constant current charging with the maximum charging current. Further, if there are two or more batteries whose target charging currents are tied for the highest, the battery with the highest charging priority may be selected according to the weight of the battery type.

As a feasible implementation manner, in this embodiment, battery type weights may be set in advance for each battery in the power supply device, and the battery type weights of each battery are different. For example, there are four batteries A, B, C, and D in the power supply device, and the battery type weights are A, B, C, and D in descending order. If the target charging current of battery A is 2A, the target charging current of battery B is 5A, the target charging current of battery C is 5A, and the target charging current of battery D is 5A, battery B is the battery type weight of the battery with the highest target charging current The highest battery, so you can set battery B as the battery with the highest charging priority, and charge battery B with a constant current.

Specifically, the battery in the above power supply device includes a main battery and at least one secondary battery, and the battery type weight of the main battery is higher than the battery type weight of the secondary battery. In this embodiment, a corresponding battery type weight can also be set for each secondary battery.

As a further introduction to the embodiment corresponding to FIG. 1 , in this embodiment, the target charging current corresponding to the battery can be determined in the following manner: obtain the constant current charging rule of each of the batteries; wherein, the constant current charging rule includes charging The corresponding relationship between the temperature range and the charging current; querying the target charging current corresponding to the battery temperature according to the constant current charging rule. The constant current charging rules of any two batteries can be the same or different.

Further, after the target battery is charged with a constant current, the battery temperature of the target battery will rise. When the temperature of the target battery changes, the charging efficiency of the battery may become lower. In order to ensure the overall charging efficiency of the power supply device, This embodiment can switch the battery being charged in the following ways:

Step A1: Set the charging temperature range corresponding to the charging start time of the target battery as the reference temperature range;

The charging start time of the target battery above refers to the execution time of S103 in the embodiment corresponding to FIG. 1 . In this embodiment, the charging temperature range where the battery temperature of the target battery is queried through the constant current charging rule can be set as the reference temperature range.

Step A2: Determine whether the current battery temperature of the target battery is higher than the maximum value of the reference temperature range; if yes, proceed to step A3; if not, continue to charge the target battery with a constant current.

Among them, this embodiment can detect the current battery temperature of each battery according to the preset cycle. If the current battery temperature of the target battery is higher than the maximum value of the reference temperature range, the target charging current of the target battery will change. Therefore, this embodiment can Execute the relevant operations in step A3 to determine whether it is necessary to switch the battery being charged.

Step A3: According to the constant current charging rule of the target battery, judge whether the charging current corresponding to the charging temperature range where the current battery temperature of the target battery is located is greater than the charging current corresponding to the reference temperature range; if so, proceed to step A4 ; If not, go to step A5.

In this step, if the current battery temperature of the target battery is higher than the maximum value of the reference temperature range, it means that the battery temperature of the target battery is already in the next charging temperature range. In this step, according to the constant current charging rule of the target battery, it is judged whether the charging current corresponding to the charging temperature range where the current battery temperature of the target battery is located is greater than the charging current corresponding to the reference temperature range, that is, it is judged that the current battery temperature of the target battery is After the temperature is higher than the maximum value of the reference temperature range, whether the charging current of the target battery becomes larger. In order to avoid frequent switching of the charged battery, if the charging current of the target battery becomes larger, the battery can not be switched and continue to charge the target battery with a constant current; if the charging current of the target battery becomes smaller, a new target battery can be re-determined , so as to charge the new target battery with a constant current.

Step A4: Continue to charge the target battery with a constant current;

Step A5: Determine a new target battery, so as to charge the new target battery with a constant current.

The charging efficiency of the power supply device as a whole can be improved through the above method, and the number of battery switching and charging can also be avoided, thereby improving the battery life.

As a further introduction to the previous embodiment, a new target battery can be determined in the following manner:

Step B1: update the target charging current of the battery;

Step B2: setting the battery that meets the first constraint condition as a candidate battery;

Wherein, the first constraint condition is: the current target charging current of the candidate battery is greater than the current target charging current of the target battery, and the target charging current of the next charging temperature interval corresponding to the candidate battery is greater than the target battery The current target charging current;

Take the above process as an example: if the main battery is the target battery, and the current target charging current of the main battery is 3A, if the target charging current corresponding to the current temperature of the secondary battery is 4A, and the temperature of the secondary battery rises, the corresponding charging current range corresponds to the next charging temperature range. If the target charging current is 5A, the secondary battery is used as an alternative battery.

Step B3: setting the battery that meets the second constraint condition and the third constraint condition as a candidate battery;

Wherein, the second constraint condition is that the current target charging current of the candidate battery is greater than the current target charging current of the target battery, and the target charging current of the next charging temperature interval corresponding to the candidate battery is equal to the current target charging current of the target battery. The target charging current; the third constraint condition is that the difference between the maximum value of the current charging temperature range of the alternative battery and the current battery temperature of the alternative battery is greater than the preset value;

Take the above process as an example: the constant current charging rule of the auxiliary battery is that when the temperature is 20°-30°, the corresponding target charging current is 4A, and when the temperature is 40°-50°, the corresponding target charging current is 3A, and the default value is 3° . If the main battery is the target battery, and the current target charging current of the main battery is 3A, if the temperature of the secondary battery is 35°, then the secondary battery will be used as a backup battery; if the temperature of the secondary battery is 39°, the secondary battery will not For battery replacement. In this step, by setting the preset value, the battery can be prevented from switching and charging repeatedly in a short period of time, thereby ensuring the life of the battery.

Step B4: Determine whether there is the candidate battery; if yes, set the candidate battery as the new target battery; if not, continue to charge the target battery with a constant current.

Specifically, if there is an alternative battery and the number of the alternative battery is 1, set the alternative battery as the new target battery; if there is an alternative battery and the number of the alternative battery is greater than 1, then the battery type can be set to The candidate battery with the largest weight is set as the new target battery.

The process described in the above-mentioned embodiments will be described below through embodiments in practical applications.

With the development of virtual reality technology, more and more VR headsets appear in real life. VR headsets are loved by many players for their unique immersive experience and rich and colorful application software. There are large-scale applications running in the VR headset, so the battery of the VR headset needs to have a certain battery life. VR headsets with dual batteries greatly increase the battery life of VR headsets. The design of two batteries undoubtedly puts forward higher requirements for charging efficiency. Currently, VR dual-battery charging still uses the conventional sequential charging scheme. Fully charge the main battery, and then charge the auxiliary battery. Because the battery charging process is divided into trickle charging, constant current charging, constant voltage charging and other stages, all current fast charging technologies focus on the constant current fast charging stage. stage will rapidly increase the battery power and bring a good sense of experience to consumers. However, the charging efficiency of the constant current charging stage is not only limited by the conventional battery voltage value, but also by the influence of the battery temperature. The current of constant current charging is different, so for dual batteries, fully consider the influence of temperature on the constant current charging stage of the two batteries, and the power of the two batteries can be greatly improved at the same time within a limited time. .

This embodiment provides a solution for switching dual battery charging of a VR head-mounted device based on the charging temperature of the battery: In this solution, when the battery is in the constant current fast charging stage, the charging battery is dynamically switched through temperature control, so that the primary and secondary batteries of the VR head-mounted device The battery is continuously maintained in the high-current fast charging stage, and the maximum charging power can be obtained within a limited time, which improves the charging efficiency of VR headsets.

The two batteries of the aforementioned VR head-mounted device include battery 1 and battery 2 . Battery 1 is the main battery, and battery 2 is the auxiliary battery; the main battery is not removable and is mainly responsible for power supply; the auxiliary battery is detachable and is used to switch to the auxiliary battery when the power of the main battery is low, instead of the main battery for external power supply.

The present embodiment is that used parameter is as shown in table 1:

Table 1 Charging parameter list

The magnitude relationship of the above temperature parameters is: T3>T2_high>T2>T1_high>T1.

The constant current charging rules corresponding to battery 1 and battery 2 are the same, please refer to Table 2, Table 2 is a comparison table of temperature and current generated according to the constant current charging rules.

Table 2 Temperature and current comparison table

the	充电电流recharging current	充电温度区间Charging temperature range
充电阶段一charging phase one	0.2C0.2C	≤T1≤T1
充电阶段二Charging Phase 2	0.9C0.9C	(T1，T2](T1, T2]
充电阶段三Charging stage three	0.5C0.5C	(T2，T3](T2, T3]
充电阶段四Charging stage four	00	≥T3≥T3

The following provides 16 ways to select the battery that needs to be charged. The following distance points out the charging stage to indicate the battery temperature when the power supply device enters the constant current charging state:

scene 1:

If battery 1 is in charging phase 1, if battery 2 is in charging phase 1, the target charging currents of battery 1 and battery 2 are the same (both 0.2C), and battery 1 can be charged preferentially.

Scenario 2:

If the battery 1 is in the first charging stage, and if the battery 2 is in the second charging stage, the target charging current of the battery 1 is lower than the target charging current of the battery 2, and the battery 2 can be charged preferentially.

Scene 3:

If the battery 1 is in the first charging stage, and if the battery 2 is in the third charging stage, at this time, the target charging current of the battery 1 is lower than the target charging current of the battery 2, and the battery 2 can be charged preferentially.

Scene 4:

If the battery 1 is in the charging stage 1, if the battery 2 is in the charging stage 4, at this time, the target charging current of the battery 1 is greater than the target charging current of the battery 2, and the battery 1 can be charged preferentially.

Scene 5:

If the battery 1 is in the second charging stage, and if the battery 2 is in the first charging stage, the target charging current of the battery 1 is greater than the target charging current of the battery 2, and the battery 1 can be charged preferentially.

Scene 6:

If battery 1 is in charging phase 2, if battery 2 is in charging phase 2, the target charging currents of battery 1 and battery 2 are the same (both 0.9C), and battery 1 can be charged preferentially.

Scene 7:

If the battery 1 is in the second charging stage, and if the battery 2 is in the third charging stage, the target charging current of the battery 1 is greater than the target charging current of the battery 2, and the battery 1 can be charged preferentially.

Scene 8:

If the battery 1 is in the charging stage 2, if the battery 2 is in the charging stage 4, at this time, the target charging current of the battery 1 is greater than the target charging current of the battery 2, and the battery 1 can be charged preferentially.

Scene 9:

If the battery 1 is in the third charging stage, and if the battery 2 is in the first charging stage, the target charging current of the battery 1 is greater than the target charging current of the battery 2, and the battery 1 can be charged preferentially.

Scene 10:

If the battery 1 is in the third charging stage, and if the battery 2 is in the second charging stage, the target charging current of the battery 1 is lower than the target charging current of the battery 2, and the battery 2 can be charged preferentially.

Scene 11:

If battery 1 is in charging stage 3, if battery 2 is in charging stage 3, the target charging currents of battery 1 and battery 2 are the same (both 0.5C), and battery 1 can be charged preferentially.

Scene 12:

If the battery 1 is in the third charging stage, and if the battery 2 is in the fourth charging stage, at this time, the target charging current of the battery 1 is greater than the target charging current of the battery 2, and the battery 1 can be charged preferentially.

Scene 13:

If the battery 1 is in the fourth charging stage, and if the battery 2 is in the first charging stage, the target charging current of the battery 1 is lower than the target charging current of the battery 2, and the battery 2 can be charged preferentially.

Scene 14:

If battery 1 is in charging stage four, if battery 2 is in charging stage two, and the target charging current of battery 1 is lower than the target charging current of battery 2, battery 2 can be charged preferentially.

Scene 15:

If battery 1 is in charging stage four, if battery 2 is in charging stage three, and the target charging current of battery 1 is lower than the target charging current of battery 2, battery 2 can be charged preferentially.

Scene 16:

If battery 1 is in charging stage four, if battery 2 is in charging stage four, neither battery 1 nor battery 2 will be charged at this time.

After constant current charging, there may also be an operation of switching battery charging. The specific implementation process is as follows:

Please refer to Fig. 2. Fig. 2 is a flow chart of the first battery switching charging method provided by the embodiment of the present application. When battery 1 is in charging stage two (0.9C) and battery 2 is in charging stage two (0.9C), First charge the battery 1. When the temperature t1 of the battery 1 is higher than T2, if the temperature t2 of the battery 2 is lower than the set switching temperature T1_high, stop charging the battery 1 and switch to charging the battery 2, otherwise continue to charge the battery 1 charge.

Please refer to Fig. 3. Fig. 3 is a flow chart of the second battery switching charging method provided by the embodiment of the present application. When battery 1 is in charging stage 2 (0.9C) and battery 2 is in charging stage 3 (0.5C), First charge the battery 1, when the temperature t1 of the battery 1 is higher than T3, if the temperature t2 of the battery 2 is lower than the set switching temperature T2_high at this time, stop charging the battery 1 and switch to charging the battery 2, otherwise continue to charge the battery 1 charge.

Please refer to Fig. 4, Fig. 4 is a flow chart of the third battery switching charging method provided by the embodiment of the present application. When battery 1 is in charging stage three (0.5C) and battery 2 is in charging stage two (0.9C), First charge the battery 2. When the temperature t2 of the battery 2 is higher than T2, if the temperature t1 of the battery 1 is lower than the set switching temperature T1_high, stop charging the battery 2 and switch to charging the battery 1, otherwise continue to charge the battery 2 charge.

Please refer to Fig. 5. Fig. 5 is a flow chart of the fourth battery switching charging method provided by the embodiment of the present application. When battery 1 is in charging stage three (0.5C) and battery 2 is in charging stage three (0.5C), First charge the battery 1, when the temperature t1 of the battery 1 is higher than T3, if the temperature t2 of the battery 2 is lower than the set switching temperature T2_high at this time, stop charging the battery 1 and switch to charging the battery 2, otherwise continue to charge the battery 1 charge.

In the prior art, charging of double batteries is performed sequentially, and it takes a long time to charge two batteries at the same time, which seriously affects the charging efficiency. In this embodiment, by dynamically adjusting the rechargeable battery path according to the temperature during the constant current fast charging stage, it is ensured that each battery can be charged at the optimal temperature during the constant current stage. At the same time, the minimum switching temperature value is set to prevent the same Frequent switching and charging of a battery also protects the battery and prolongs the normal service life of the battery. When the VR head-mounted device includes more than 3 batteries, the idea of the above embodiment can also be used to realize fast charging of the battery

Please refer to FIG. 6, which is a schematic structural diagram of a battery charging control device provided in an embodiment of the present application;

The device can include:

The temperature acquisition module 601 is configured to acquire the battery temperature of the battery in the power supply device if the power supply device enters the constant current charging state; wherein, the number of batteries in the charging state in the power supply device is less than or equal to 1;

A battery setting module 602, configured to determine a target charging current corresponding to the battery according to the battery temperature, and set the battery with the highest charging priority as the target battery; wherein, the target charging current is positively correlated with the charging priority;

The charging control module 602 is configured to charge the target battery with a constant current.

Further, the battery setting module 602 is used to sort the batteries according to the size of the target charging current; it is also used to judge whether the number of batteries with the largest target charging current is 1; if so, set the target charging current The largest battery is set as the battery with the highest charging priority, and the battery with the highest charging priority is set as the target battery; if not, the battery with the highest battery type weight among the batteries with the largest target charging current is set as charging the battery with the highest priority, and set the battery with the highest charging priority as the target battery.

Further, the battery in the power supply device includes a main battery and at least one secondary battery, and the battery type weight of the main battery is higher than the battery type weight of the secondary battery.

Further, the battery setting module 602 is used to obtain the constant current charging rule of each battery; wherein, the constant current charging rule includes the corresponding relationship between the charging temperature range and the charging current; Query the target charging current corresponding to the battery temperature.

Further, it also includes:

The switching judging module is used to set the charging temperature interval corresponding to the charging start time of the target battery as a reference temperature interval after the constant current charging is performed on the target battery; it is also used to judge whether the current battery temperature of the target battery is higher than the maximum value of the reference temperature range; if the current battery temperature of the target battery is higher than the maximum value of the reference temperature range, then according to the constant current charging rule of the target battery, determine the target Whether the charging current corresponding to the charging temperature interval where the current battery temperature of the battery is located is greater than the charging current corresponding to the reference temperature interval; it is also used if the charging current corresponding to the charging temperature interval where the current battery temperature of the target battery is located is greater than the The charging current corresponding to the reference temperature range, then continue to charge the target battery with a constant current;

A battery re-determining module, configured to determine a new target battery if the charging current corresponding to the charging temperature interval where the current battery temperature of the target battery is located is less than or equal to the charging current corresponding to the reference temperature interval, so as to provide the new battery for the new target battery. The target battery is charged with a constant current.

Further, the battery re-determining module is used to update the target charging current of the battery; it is also used to set the battery that meets the first constraint condition as an alternative battery; wherein, the first constraint condition is: the alternative battery is currently The target charging current of the target battery is greater than the current target charging current of the target battery, and the target charging current of the next charging temperature range corresponding to the alternative battery is greater than the current target charging current of the target battery; it is also used to meet the second constraint The battery of the condition and the third constraint condition is set as an alternative battery; wherein, the second constraint condition is that the current target charging current of the alternative battery is greater than the current target charging current of the target battery, and the corresponding lower The target charging current in a charging temperature interval is equal to the current target charging current of the target battery; the third constraint condition is that the difference between the maximum value of the current charging temperature interval of the alternative battery and the current battery temperature of the alternative battery is greater than the preset Set a value; it is also used to judge whether there is the alternative battery; if yes, set the alternative battery as the new target battery; if not, continue to charge the target battery with a constant current.

Further, it also includes:

A battery selection module, configured to select the battery farthest from the target battery as the power supply battery according to the battery arrangement position of the power supply device after charging the target battery with a constant current, so as to use the power supply battery as the power supply battery for other The device provides electrical energy.

Since the embodiment of the device part corresponds to the embodiment of the method part, please refer to the description of the embodiment of the method part for the embodiment of the device part, and details will not be repeated here.

The present application also provides a storage medium on which a computer program is stored. When the computer program is executed, the steps provided in the above-mentioned embodiments can be realized. The storage medium may include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes.

The present application also provides an electronic device, including a power supply device, a memory, and a processor, the power supply device includes at least two batteries, a computer program is stored in the memory, and the processor calls the computer program in the memory , the steps provided in the above embodiments can be implemented. Of course, the electronic device may also include various network interfaces, power supplies and other components.

Various embodiments in this specification are described in a parallel or progressive manner, each embodiment focuses on the differences from other embodiments, and the same or similar parts of the various embodiments can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for related details, please refer to the description of the method part.

Those of ordinary skill in the art can also understand that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the relationship between hardware and software Interchangeability. In the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered as exceeding the scope of the present application.

The steps of the methods or algorithms described in connection with the embodiments disclosed herein may be directly implemented by hardware, software modules executed by a processor, or a combination of both. Software modules can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other Any other known storage medium.

It should also be noted that in this article, relational terms such as first and second etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations Any such actual relationship or order exists between. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Claims

A battery charging control method, characterized in that, comprising:

If the power supply device enters the constant current charging state, then obtain the battery temperature of the battery in the power supply device;

Determine the target charging current corresponding to the battery according to the battery temperature, and set the battery with the highest charging priority as the target battery; wherein, the target charging current is positively correlated with the charging priority;

Charge the target battery with a constant current.
The battery charging control method according to claim 1, wherein the setting the battery with the highest charging priority as the target battery comprises:

sorting the batteries according to the magnitude of the target charging current;

judging whether the number of batteries with the largest target charging current is 1;

If so, setting the battery with the highest target charging current as the battery with the highest charging priority, and setting the battery with the highest charging priority as the target battery;

If not, set the battery with the highest battery type weight among the batteries with the largest target charging current as the battery with the highest charging priority, and set the battery with the highest charging priority as the target battery.
The battery charging control method according to claim 2, wherein the battery in the power supply device includes a main battery and at least one secondary battery, and the battery type weight of the main battery is higher than the battery type weight of the secondary battery .
The battery charging control method according to claim 1, wherein determining the target charging current corresponding to the battery according to the battery temperature comprises:

Obtaining the constant current charging rules of each of the batteries; wherein, the constant current charging rules include the corresponding relationship between the charging temperature range and the charging current;

Query the target charging current corresponding to the battery temperature according to the constant current charging rule.
The battery charging control method according to claim 4, characterized in that, after charging the target battery with a constant current, further comprising:

Setting the charging temperature range corresponding to the charging start time of the target battery as the reference temperature range;

judging whether the current battery temperature of the target battery is higher than the maximum value of the reference temperature range;

If the current battery temperature of the target battery is higher than the maximum value of the reference temperature range, then according to the constant current charging rule of the target battery, determine the charging current corresponding to the charging temperature range where the current battery temperature of the target battery is located Whether it is greater than the charging current corresponding to the reference temperature range;

If the charging current corresponding to the charging temperature interval where the current battery temperature of the target battery is located is greater than the charging current corresponding to the reference temperature interval, continue to charge the target battery with a constant current;

If the charging current corresponding to the charging temperature range where the current battery temperature of the target battery is located is less than or equal to the charging current corresponding to the reference temperature range, then determine a new target battery so as to perform constant current charging for the new target battery .
The battery charging control method according to claim 5, wherein said determining a new target battery comprises:

updating the target charging current of the battery;

Setting the battery that meets the first constraint condition as an alternative battery; wherein, the first constraint condition is: the current target charging current of the alternative battery is greater than the current target charging current of the target battery, and the corresponding The target charging current in the next charging temperature interval is greater than the current target charging current of the target battery;

Setting the battery that meets the second constraint condition and the third constraint condition as an alternative battery; wherein, the second constraint condition is that the current target charging current of the alternative battery is greater than the current target charging current of the target battery, and the standby The target charging current of the next charging temperature range corresponding to the selected battery is equal to the current target charging current of the target battery; the third constraint condition is the maximum value of the current charging temperature range of the candidate battery and the current battery temperature of the candidate battery The difference is greater than the preset value;

judging whether the alternative battery exists;

If so, setting the candidate battery as the new target battery;

If not, continue to charge the target battery with a constant current.
The battery charging control method according to any one of claims 1 to 6, characterized in that, after charging the target battery with a constant current, further comprising:

According to the battery arrangement position of the power supply device, the battery farthest from the target battery is selected as the power supply battery, so as to provide electric energy for other devices through the power supply battery.
A battery charging control device, characterized in that it comprises:

A temperature acquisition module, configured to obtain the battery temperature of the battery in the power supply device if the power supply device enters a constant current charging state;

The battery setting module is used to determine the target charging current corresponding to the battery according to the battery temperature, and set the battery with the highest charging priority as the target battery; wherein, the target charging current is positively correlated with the charging priority;

The charging control module is used to charge the target battery with a constant current.
An electronic device, characterized in that it includes a power supply device, a memory and a processor, the power supply device includes at least two batteries, a computer program is stored in the memory, and when the processor invokes the computer program in the memory The steps of the battery charging control method according to any one of claims 1 to 7 are realized.
A storage medium, characterized in that computer-executable instructions are stored in the storage medium, and when the computer-executable instructions are loaded and executed by a processor, the battery charging control described in any one of claims 1 to 7 is realized method steps.