CN114123427B - Battery charging control method and device, electronic equipment and storage medium - Google Patents

Battery charging control method and device, electronic equipment and storage medium Download PDF

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Publication number
CN114123427B
CN114123427B CN202111501640.7A CN202111501640A CN114123427B CN 114123427 B CN114123427 B CN 114123427B CN 202111501640 A CN202111501640 A CN 202111501640A CN 114123427 B CN114123427 B CN 114123427B
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battery
charging
target
current
temperature
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CN114123427A (en
Inventor
高岩峰
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Goertek Techology Co Ltd
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Goertek Techology Co Ltd
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Priority to CN202111501640.7A priority Critical patent/CN114123427B/en
Priority to PCT/CN2021/139594 priority patent/WO2023103070A1/en
Publication of CN114123427A publication Critical patent/CN114123427A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/443—Methods for charging or discharging in response to temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application discloses a battery charging control method, which comprises the following steps: if the power supply device enters a constant current charging state, acquiring the battery temperature of a battery in the power supply device; determining a target charging current corresponding to the battery according to the battery temperature, and setting the battery with the highest charging priority as a target battery; wherein the target charging current is positively correlated with the charging priority; and carrying out constant current charging on the target battery. The application charges the battery with the largest charging current in the power supply device, and can improve the charging efficiency of the battery. The application also discloses a battery charging control device, electronic equipment and a storage medium, which have the beneficial effects.

Description

Battery charging control method and device, electronic equipment and storage medium
Technical Field
The present application relates to the field of power management technologies, and in particular, to a battery charging control method and apparatus, an electronic device, and a storage medium.
Background
Along with development of technology, portable electronic devices such as mobile phones, notebook computers and intelligent wearable devices are visible everywhere. In order to increase the service life of an electronic device, a plurality of batteries (such as a main battery and a sub-battery) capable of independently supplying power to the electronic device are generally disposed in the electronic device in the related art.
In charging an electronic device containing a plurality of batteries, the batteries are typically charged one by one in a fixed order, such as: the main battery is charged first, and the secondary battery is charged after the main battery is full. However, the charging efficiency of the charging method is low, and the requirement of the user on quick charging cannot be met.
Therefore, how to improve the charging efficiency of the battery is a technical problem that a person skilled in the art needs to solve at present.
Disclosure of Invention
The application aims to provide a battery charging control method, a device, electronic equipment and a storage medium, which can improve the charging efficiency of a battery.
In order to solve the above technical problems, the present application provides a battery charging control method, including:
if the power supply device enters a constant current charging state, acquiring the battery temperature of a battery in the power supply device;
determining a target charging current corresponding to the battery according to the battery temperature, and setting the battery with the highest charging priority as a target battery; wherein the target charging current is positively correlated with the charging priority;
and carrying out constant current charging on the target battery.
Optionally, the setting the battery with the highest charging priority as the target battery includes:
sequencing the batteries according to the magnitude of the target charging current;
judging whether the maximum battery number of the target charging current is 1 or not;
If yes, setting the battery with the largest 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, the battery with the highest battery type weight in the battery with the highest target charging current is set as the battery with the highest charging priority, and the battery with the highest charging priority is set as the target battery.
Optionally, the battery in the power supply device includes a main battery and at least one sub-battery, and the battery type weight of the main battery is higher than the battery type weight of the sub-battery.
Optionally, determining the target charging current corresponding to the battery according to the battery temperature includes:
obtaining a constant current charging rule of each battery; the constant current charging rule comprises a corresponding relation between a charging temperature interval and charging current;
inquiring a target charging current corresponding to the battery temperature according to the constant current charging rule.
Optionally, after the constant current charging is performed on the target battery, the method further includes:
Setting a charging temperature interval corresponding to the time when the target battery starts to charge as a reference temperature interval;
Judging whether the current battery temperature of the target battery is higher than the maximum value of the reference temperature interval;
If the current battery temperature of the target battery is higher than the maximum value of the reference temperature interval, judging whether the charging current corresponding to the charging temperature interval in which the current battery temperature of the target battery is located is greater than the charging current corresponding to the reference temperature interval according to the constant current charging rule of the target battery;
If the charging current corresponding to the charging temperature interval of the current battery temperature of the target battery is larger than the charging current corresponding to the reference temperature interval, continuing to perform constant-current charging on the target battery;
And if the charging current corresponding to the charging temperature interval of the current battery temperature of the target battery is smaller than or equal to the charging current corresponding to the reference temperature interval, determining a new target battery so as to perform constant current charging on the new target battery.
Optionally, the determining the new target battery includes:
Updating a target charging current of the battery;
Setting the battery meeting the first constraint condition as an alternative battery; wherein the first constraint condition is: the current target charging current of the alternative battery is larger than the current target charging current of the target battery, and the target charging current of the next charging temperature interval corresponding to the alternative battery is larger than the current target charging current of the target battery;
Setting the battery meeting the second constraint condition and the third constraint condition as an alternative battery; the second constraint condition is that the current target charging current of the alternative battery is larger than the current target charging current of the target battery, and the target charging current of the next charging temperature interval corresponding to the alternative battery is equal to the current target charging current of the target battery; the third constraint condition is that the difference value between the maximum value of the current charging temperature interval of the alternative battery and the current battery temperature of the alternative battery is larger than a preset value;
Judging whether the alternative battery exists or not;
If yes, setting the alternative battery as the new target battery;
If not, continuing constant current charging of the target battery.
Optionally, after the constant current charging is performed on the target battery, the method further includes:
and selecting a battery farthest from the target battery as a power supply battery according to the battery arrangement position of the power supply device so as to supply electric energy for other devices through the power supply battery.
The application also provides a battery charging control device, which comprises:
the temperature acquisition module is used for acquiring the battery temperature of a battery in the power supply device if the power supply device enters a constant current charging state;
The battery setting module is used for determining a target charging current corresponding to the battery according to the battery temperature and setting the battery with the highest charging priority as a target battery; wherein the target charging current is positively correlated with the charging priority;
And the charging control module is used for carrying out constant-current charging on the target battery.
The present application also provides a storage medium having stored thereon a computer program which, when executed, implements the steps performed by the battery charge control method described above.
The application also provides an electronic device, which comprises a power supply device, a memory and a processor, wherein the power supply device comprises at least two batteries, a computer program is stored in the memory, and the processor realizes the steps executed by the battery charging control method when calling the computer program in the memory.
The application provides a battery charging control method, which comprises the following steps: if the power supply device enters a constant current charging state, acquiring the battery temperature of a battery in the power supply device; wherein the number of the batteries in a charging state in the power supply device is less than or equal to 1; determining a target charging current corresponding to the battery according to the battery temperature, and setting the battery with the highest charging priority as a target battery; wherein the target charging current is positively correlated with the charging priority; and carrying out constant current charging on the target battery.
When the power supply device enters a constant-current charging state, the battery temperature of the battery in the power supply device is obtained, and the charging current of constant-current charging is influenced by the battery temperature. The greater the charging current is, the higher the charging efficiency of the battery is, so the application determines the charging priority of the battery based on the target charging current, and sets the battery with the highest charging priority as the target battery, so as to charge the target battery with the highest charging efficiency. According to the application, the battery with highest charging efficiency in the power supply device can be charged, and the charging efficiency of the battery is improved. The application also provides a battery charging control device, a storage medium and an electronic device, which have the beneficial effects and are not described herein.
Drawings
For a clearer description of embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described, it being apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
Fig. 1 is a flowchart of a battery charging control method according to an embodiment of the present application;
fig. 2 is a flowchart of a first battery switching charging method according to an embodiment of the present application;
fig. 3 is a flowchart of a second battery switching charging method according to an embodiment of the present application;
fig. 4 is a flowchart of a third battery switching charging method according to an embodiment of the present application;
Fig. 5 is a flowchart of a fourth battery switching charging method according to an embodiment of the present application;
Fig. 6 is a schematic structural diagram of a battery charging control device according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, fig. 1 is a flowchart of a battery charging control method according to an embodiment of the application.
The specific steps may include:
S101: if the power supply device enters a constant current charging state, acquiring the battery temperature of a battery in the power supply device;
The present embodiment can be applied to an electronic apparatus having a power supply device, such as: cell phones, VR (Virtual Reality) headsets, AR glasses, headphones, etc. The power supply device at least comprises two batteries which can independently supply power to other devices, and the batteries in the power supply device can work cooperatively and also can work independently. In this embodiment, the number of the batteries in the charging state in the power supply device is less than or equal to 1, that is: at most, only one battery is charged at the same time, thereby ensuring that the charging efficiency of the battery reaches the highest.
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, and if the power supply device enters the constant current charging state, the battery temperature of the battery in the power supply device may be obtained.
S102: determining a target charging current corresponding to the battery according to the battery temperature, and setting the battery with the highest charging priority as a target battery;
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 optimal charging temperature interval of the battery, the charging current is 2A when the battery temperature is less than 10 °, the charging current is 5A when the battery temperature is within 10 ° to 40 °, and the charging current is 1A when the battery temperature is greater than 40 °. In this embodiment, the correspondence between the battery temperature and the charging point current may be preset, so that after the battery temperature of each battery is obtained in S101, the target charging current corresponding to the battery may be determined according to the battery temperature. The target charging current means: the actual charge current level when constant current charging is performed on the battery at this temperature.
It can be understood that the larger the charging current is in the constant current charging process, the higher the charging efficiency of the battery is, and the charging priority of each battery at the current battery temperature can be determined according to the association relation between the target charging current and the charging priority. The target charging current is positively correlated with the charging priority, namely: the greater the target charging current of the battery, the higher the charging priority of the battery without changing other conditions.
S103: and carrying out constant current charging on the target battery.
In the embodiment, the battery with the highest charging priority is set as the target battery, so that the battery in the power supply device can be charged with the largest charging current, and the overall charging efficiency of the power supply device is improved.
When the target battery is subjected to constant current charging, the power supply device can supply power by using other batteries. In order to improve the battery charging efficiency, the embodiment may select, after constant current charging of the target battery, the battery farthest from the target battery according to the battery arrangement position of the power supply device 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 a constant current charging state, the battery temperature of the battery in the power supply device is obtained, and the charging current of constant current charging is affected by the battery temperature. The larger the charging current is, the higher the charging efficiency of the battery is, so the present embodiment determines the charging priority of the battery based on the target charging current, and further 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 the embodiment, the battery with the highest charging efficiency in the power supply device can be charged, and the charging efficiency of the battery is improved.
As a further description of the corresponding embodiment of fig. 1, the present embodiment may determine the priority of the battery and set the target battery by: sequencing the batteries according to the magnitude of the target charging current; judging whether the maximum battery number of the target charging current is 1 or not; if yes, setting the battery with the largest 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, the battery with the highest battery type weight in the battery with the highest target charging current 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, and if there are only 1 battery with the largest target charging current, the battery with the largest target charging current may be directly set as the battery with the highest charging priority, and at this time, the charging priorities of the other batteries need not be determined. The present application sets the battery with the highest charging priority as the target battery so as to perform constant current charging with the largest charging current. Further, if there are more than 2 batteries with the maximum target charging currents in parallel, the battery with the highest charging priority may be selected according to the battery type weight.
As a possible implementation manner, the present embodiment may set a battery type weight for each battery in the power supply device in advance, and the battery type weights of each battery are different. For example, four batteries A, B, C and T are arranged in the power supply device, and the weights of the battery types are A, B, C and T in sequence from high to low. If the target charging current of the battery A is 2A, the target charging current of the battery B is 5A, the target charging current of the battery C is 5A, the target charging current of the battery D is 5A, and the battery B is the battery with the highest battery type weight in the batteries with the largest target charging current, so the battery B can be set as the battery with the highest charging priority, and constant current charging can be carried out on the battery B.
Specifically, the battery in the power supply device comprises a main battery and at least one auxiliary battery, wherein the battery type weight of the main battery is higher than that of the auxiliary battery. The embodiment may also set a corresponding battery type weight for each sub-battery.
As a further introduction to the corresponding embodiment of fig. 1, the present embodiment may determine the target charging current for the battery by: obtaining a constant current charging rule of each battery; the constant current charging rule comprises a corresponding relation between a charging temperature interval and charging current; inquiring a 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 constant current charging is performed on the target battery, the battery temperature of the target battery may rise, and when the temperature of the target battery changes, a situation that the battery charging efficiency becomes low may occur, so as to ensure the overall charging efficiency of the power supply device, in this embodiment, the battery being charged may be switched by:
Step A1: setting a charging temperature interval corresponding to the time when the target battery starts to charge as a reference temperature interval;
the above-mentioned target battery start charging time refers to the execution time of S103 in the corresponding embodiment of fig. 1, and in this embodiment, the charging temperature interval where the battery temperature of the target battery is found may be set as the reference temperature interval by querying the constant current charging rule.
Step A2: judging whether the current battery temperature of the target battery is higher than the maximum value of the reference temperature interval; if yes, enter step A3; if not, continuing constant current charging of the target battery.
In this embodiment, the current battery temperature of each battery may be detected according to a preset period, and if the current battery temperature of the target battery is higher than the maximum value of the reference temperature interval, the target charging current of the target battery will change, so the embodiment may perform the related operation of step A3 to determine whether the battery being charged needs to be switched.
Step A3: judging whether the charging current corresponding to the charging temperature interval in which the current battery temperature of the target battery is located is larger than the charging current corresponding to the reference temperature interval according to the constant current charging rule of the target battery; if yes, enter step A4; if not, go to step A5.
And in the step, if the current battery temperature of the target battery is higher than the maximum value of the reference temperature interval, the battery temperature of the target battery is indicated to be in the next charging temperature interval. According to the constant current charging rule of the target battery, the step judges whether the charging current corresponding to the charging temperature interval in which the current battery temperature of the target battery is located is larger than the charging current corresponding to the reference temperature interval, namely, judges whether the charging current of the target battery becomes larger after the current battery temperature of the target battery is higher than the maximum value of the reference temperature interval. In order to avoid frequent switching of the charged battery, if the charging current of the target battery is large, the battery can be continuously charged with constant current without switching the battery; if the charging current of the target battery becomes smaller, a new target battery can be redetermined so as to perform constant current charging for the new target battery.
Step A4: continuously performing constant current charging on the target battery;
step A5: and determining a new target battery so as to perform constant current charging on the new target battery.
Through the mode, the overall charging efficiency of the power supply device can be improved, the times of battery switching and charging can be avoided being reduced, and the service life of the battery is prolonged.
As a further introduction to the previous embodiment, the new target cell may be determined by:
Step B1: updating a target charging current of the battery;
step B2: setting the battery meeting the first constraint condition as an alternative battery;
Wherein the first constraint condition is: the current target charging current of the alternative battery is larger than the current target charging current of the target battery, and the target charging current of the next charging temperature interval corresponding to the alternative battery is larger than the current target charging current of the target battery;
the above procedure is exemplified: and if the main battery is a target battery and the current target charging current of the main battery is 3A, and if the target charging current corresponding to the current temperature of the auxiliary battery is 4A and the target charging current corresponding to the next charging temperature interval after the temperature of the auxiliary battery is increased is 5A, the auxiliary battery is taken as an alternative battery.
Step B3: setting the battery meeting the second constraint condition and the third constraint condition as an alternative battery;
The second constraint condition is that the current target charging current of the alternative battery is larger than the current target charging current of the target battery, and the target charging current of the next charging temperature interval corresponding to the alternative battery is equal to the current target charging current of the target battery; the third constraint condition is that the difference value between the maximum value of the current charging temperature interval of the alternative battery and the current battery temperature of the alternative battery is larger than a preset value;
The above procedure is exemplified: the constant current charging rule of the secondary battery is that the corresponding target charging current is 4A when the temperature is 20-30 degrees, the corresponding target charging current is 3A when the temperature is 40-50 degrees, and the preset value is 3 degrees. If the main battery is a target battery and the current target charging current of the main battery is 3A, and if the temperature of the auxiliary battery is 35 degrees, the auxiliary battery is used as an alternative battery; if the temperature of the sub-battery is 39 °, the sub-battery is not an alternative battery. The step can avoid repeated switching and charging of the battery in a short time by setting the preset value, and the service life of the battery is ensured.
Step B4: judging whether the alternative battery exists or not; if yes, setting the alternative battery as the new target battery; if not, continuing constant current charging of the target battery.
Specifically, if the alternative batteries exist and the number of the alternative batteries is 1, the alternative batteries are set as the new target batteries; if there are alternative batteries and the number of the alternative batteries is greater than 1, the alternative battery having the greatest battery type weight may be set as the new target battery.
The flow described in the above embodiment is explained below by way of an embodiment in practical application.
With the development of virtual reality technology, more and more VR headsets are in actual life, and are loved by numerous players through unique immersive experiences and rich and colorful application software. VR headsets have large applications running therein, and therefore the battery of the VR headset needs to have some cruising ability. The VR head-mounted device with the double batteries greatly increases the endurance capacity of the VR head-mounted device, the design of the two batteries clearly puts forward higher requirements on the charging efficiency, the conventional sequential charging scheme is adopted for charging the VR double batteries at present, and then the main batteries are charged and the auxiliary batteries are recharged.
The embodiment provides a scheme for switching between VR headset double battery charging based on battery charging temperature: according to the scheme, the rechargeable battery is dynamically switched through temperature control when the battery is in a constant-current quick charging stage, so that the main battery and the auxiliary battery of the VR headset continuously maintain in a large-current quick charging stage, the maximum charging electric quantity is obtained in a limited time, and the charging efficiency of the VR headset is improved.
The two batteries of the VR headset include battery 1 and battery 2. The battery 1 is a main battery, and the battery 2 is a secondary battery; wherein, the main battery is not detachable and is mainly responsible for supplying power; the secondary battery is detachable and is used for switching to the secondary battery when the electric quantity of the main battery is low to replace the main battery to externally supply power.
The parameters used in this example are shown in table 1:
Table 1 charging parameter table
The magnitude relation of the temperature parameters is as follows: t3> t2_high > T2> t1_high > T1.
The constant current charging rules corresponding to the battery 1 and the battery 2 are the same, please refer to table 2, and table 2 is a temperature and current comparison table generated according to the constant current charging rules.
Table 2 temperature and current control table
Charging current Charging temperature interval
Charging stage one 0.2C ≤T1
Charging stage two 0.9C (T1，T2]
Charging stage three 0.5C (T2，T3]
Charging stage four 0 ≥T3
The following provides 16 ways to select the battery to be charged in the scene, and the battery temperature when the power supply device enters the constant current charging state is represented by the charging stage where the point out is located in the following distances:
Scene 1:
if the battery 1 is in the first charging stage, if the battery 2 is in the first charging stage, the target charging currents of the battery 1 and the battery 2 are the same (both are 0.2C), and the battery 1 can be charged with priority.
Scene 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 smaller than the target charging current of the battery 2, so that 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, the target charging current of the battery 1 is smaller than the target charging current of the battery 2, so that the battery 2 can be charged with priority.
Scene 4:
If the battery 1 is in the first charging stage and if the battery 2 is in the fourth charging stage, the target charging current of the battery 1 is greater than the target charging current of the battery 2, so that the battery 1 can be charged with priority.
Scene 5:
If the battery 1 is in the second charging stage, 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 may be charged with priority.
Scene 6:
If the battery 1 is in the second charging stage, and if the battery 2 is in the second charging stage, the target charging currents of the battery 1 and the battery 2 are the same (both are 0.9C), the battery 1 can be charged with priority.
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 larger than the target charging current of the battery 2, so that the battery 1 can be charged preferentially.
Scene 8:
If the battery 1 is in the second charging stage and if the battery 2 is in the fourth charging stage, the target charging current of the battery 1 is larger than the target charging current of the battery 2, so that the battery 1 can be charged with priority.
Scene 9:
If the battery 1 is in the third charging stage, 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 may be charged with priority.
Scene 10:
If the battery 1 is in the third charging stage, if the battery 2 is in the second charging stage, the target charging current of the battery 1 is smaller than the target charging current of the battery 2, and the battery 2 can be charged with priority.
Scene 11:
If the battery 1 is in the third charging stage, if the battery 2 is in the third charging stage, the target charging currents of the battery 1 and the battery 2 are the same (both are 0.5C), and the battery 1 can be charged with priority.
Scene 12:
If the battery 1 is in the third charging stage and if the battery 2 is in the fourth charging stage, the target charging current of the battery 1 is larger than the target charging current of the battery 2, so that the battery 1 can be charged with priority.
Scene 13:
If the battery 1 is in the fourth charging stage, if the battery 2 is in the first charging stage, the target charging current of the battery 1 is smaller than the target charging current of the battery 2, and the battery 2 can be charged with priority.
Scene 14:
If the battery 1 is in the fourth charging stage, if the battery 2 is in the second charging stage, the target charging current of the battery 1 is smaller than the target charging current of the battery 2, and the battery 2 can be charged with priority.
Scene 15:
If the battery 1 is in the fourth charging stage, if the battery 2 is in the third charging stage, the target charging current of the battery 1 is smaller than the target charging current of the battery 2, and the battery 2 can be charged with priority.
Scene 16:
if the battery 1 is in the fourth charging stage, if the battery 2 is in the fourth charging stage, neither the battery 1 nor the battery 2 is charged.
After constant current charging, there may be an operation of switching battery charging, specifically implemented as follows:
Referring to fig. 2, fig. 2 is a flowchart of a first battery switching charging method according to an embodiment of the present application, temperatures T1 and T2 of two batteries are obtained, and when the battery 1 is in a charging stage two (0.9C), and the battery 2 is in a charging stage two (0.9C), the battery 1 is charged in a stage where T1 is less than T2; at the stage when the temperature T1 of the battery 1 is higher than or equal to T2, if the temperature T2 of the battery 2 is lower than the set switching temperature t1_high, the charging of the battery 1 is stopped, the charging of the battery 2 is switched to, and otherwise, the charging of the battery 1 is continued.
Referring to fig. 3, fig. 3 is a flowchart of a second battery switching charging method according to an embodiment of the present application, temperatures T1 and T2 of two batteries are obtained, and when the battery 1 is in a charging stage two (0.9C), and the battery 2 is in a charging stage three (0.5C), the battery 1 is charged in a stage where T1 is less than T3; at the stage when the temperature T1 of the battery 1 is higher than or equal to T3, if the temperature T2 of the battery 2 is lower than the set switching temperature t2_high, the charging of the battery 1 is stopped, the charging of the battery 2 is switched to, and otherwise, the charging of the battery 1 is continued.
Referring to fig. 4, fig. 4 is a flowchart of a third battery switching charging method according to an embodiment of the present application, temperatures T1 and T2 of two batteries are obtained, and when the battery 1 is in a charging stage three (0.5C), and the battery 2 is in a charging stage two (0.9C), the battery 2 is charged in a stage where T2 is smaller than T1; at the stage when the temperature T2 of the battery 2 is higher than or equal to T1, if the temperature T1 of the battery 1 is lower than the set switching temperature t1_high, the charging of the battery 2 is stopped, the charging of the battery 1 is switched to, and otherwise, the charging of the battery 2 is continued.
Referring to fig. 5, fig. 5 is a flowchart of a fourth battery switching charging method according to an embodiment of the present application, temperatures T1 and T2 of two batteries are obtained, and when the battery 1 is in a charging stage three (0.5C), and the battery 2 is in a charging stage three (0.5C), the battery 1 is charged in a stage where T1 is less than T3; at the stage when the temperature T1 of the battery 1 is higher than or equal to T3, if the temperature T2 of the battery 2 is lower than the set switching temperature t2_high, the charging of the battery 1 is stopped, the charging of the battery 2 is switched to, and otherwise, the charging of the battery 1 is continued.
In the prior art, the double-battery charging is carried out according to a sequential charging method, so that the time for simultaneously filling two batteries is longer, and the charging efficiency is seriously affected. According to the embodiment, the path of the rechargeable battery is dynamically adjusted according to the temperature in the constant-current quick charging stage, so that each battery in the constant-current stage can be maintained at the optimal temperature for charging, and meanwhile, the minimum switching temperature value is set, so that the same battery is prevented from being frequently switched and charged in a short time, the battery is protected, and the normal service life of the battery can be prolonged. The concepts of the above embodiments can also be used to achieve battery fast charging when the VR headset includes more than 3 batteries
Referring to fig. 6, fig. 6 is a schematic structural diagram of a battery charging control device according to an embodiment of the application;
The apparatus may include:
The temperature obtaining module 601 is configured to obtain a battery temperature of a battery in a power supply device if the power supply device enters a constant current charging state; wherein the number of the batteries in a 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 a battery with a highest charging priority as a target battery; wherein the target charging current is positively correlated with the charging priority;
And the charging control module 602 is used for performing constant-current charging on the target battery.
In this embodiment, when the power supply device enters a constant current charging state, the battery temperature of the battery in the power supply device is obtained, and the charging current of constant current charging is affected by the battery temperature. The larger the charging current is, the higher the charging efficiency of the battery is, so the present embodiment determines the charging priority of the battery based on the target charging current, and further 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 the embodiment, the battery with the highest charging efficiency in the power supply device can be charged, and the charging efficiency of the battery is improved.
Further, the battery setting module 602 is configured to rank the batteries according to the target charging current; and is further configured to determine whether the maximum battery number of the target charging current is 1; if yes, setting the battery with the largest 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, the battery with the highest battery type weight in the battery with the highest target charging current is set as the battery with the highest charging priority, and the battery with the highest charging priority is set as the target battery.
Further, the battery in the power supply device comprises a main battery and at least one auxiliary battery, and the battery type weight of the main battery is higher than that of the auxiliary battery.
Further, the battery setting module 602 is configured to obtain a constant current charging rule of each battery; the constant current charging rule comprises a corresponding relation between a charging temperature interval and charging current; and the battery temperature detection module is also used for inquiring the target charging current corresponding to the battery temperature according to the constant current charging rule.
Further, the method further comprises the following steps:
The switching judging module is used for setting a charging temperature interval corresponding to the time when the target battery starts to charge as a reference temperature interval after constant-current charging is carried out on the target battery; and is further configured to determine whether a current battery temperature of the target battery is higher than a maximum value of the reference temperature interval; if the current battery temperature of the target battery is higher than the maximum value of the reference temperature interval, judging whether the charging current corresponding to the charging temperature interval in which the current battery temperature of the target battery is located is greater than the charging current corresponding to the reference temperature interval according to the constant current charging rule of the target battery; and if the charging current corresponding to the charging temperature interval of the current battery temperature of the target battery is larger than the charging current corresponding to the reference temperature interval, continuing to perform constant-current charging on the target battery;
And the battery redetermining module is used for determining a new target battery if the charging current corresponding to the charging temperature interval in which the current battery temperature of the target battery is located is smaller than or equal to the charging current corresponding to the reference temperature interval, so as to perform constant current charging on the new target battery.
Further, the battery redetermination module is configured to update a target charging current of the battery; and is further configured to set a battery that meets the first constraint as an alternative battery; wherein the first constraint condition is: the current target charging current of the alternative battery is larger than the current target charging current of the target battery, and the target charging current of the next charging temperature interval corresponding to the alternative battery is larger than the current target charging current of the target battery; and is further configured to set a battery that meets the second constraint and the third constraint as an alternative battery; the second constraint condition is that the current target charging current of the alternative battery is larger than the current target charging current of the target battery, and the target charging current of the next charging temperature interval corresponding to the alternative battery is equal to the current target charging current of the target battery; the third constraint condition is that the difference value between the maximum value of the current charging temperature interval of the alternative battery and the current battery temperature of the alternative battery is larger than a preset value; and is also used for judging whether the alternative battery exists or not; if yes, setting the alternative battery as the new target battery; if not, continuing constant current charging of the target battery.
Further, the method further comprises the following steps:
and the battery selection module is used for selecting a battery farthest from the target battery as a power supply battery according to the battery arrangement position of the power supply device after constant-current charging is carried out on the target battery, so as to supply electric energy for other devices through the power supply battery.
Since the embodiments of the apparatus portion and the embodiments of the method portion correspond to each other, the embodiments of the apparatus portion are referred to the description of the embodiments of the method portion, and are not repeated herein.
The present application also provides a storage medium having stored thereon a computer program which, when executed, performs the steps provided by the above embodiments. The storage medium may include: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The application also provides an electronic device, which comprises a power supply device, a memory and a processor, wherein the power supply device comprises at least two batteries, the memory stores a computer program, and the processor can realize the steps provided by the embodiment when calling the computer program in the memory. Of course the electronic device may also include various network interfaces, power supplies, etc.
In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the application can be made without departing from the principles of the application and these modifications and adaptations are intended to be within the scope of the application as defined in the following claims.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Claims (9)

1.A battery charge control method, characterized by comprising:
if the power supply device enters a constant current charging state, acquiring the battery temperature of a battery in the power supply device;
determining a target charging current corresponding to the battery according to the battery temperature, and setting the battery with the highest charging priority as a target battery; wherein the target charging current is positively correlated with the charging priority;
constant-current charging is carried out on the target battery;
wherein after constant current charging is performed on the target battery, the method further comprises:
Setting a charging temperature interval corresponding to the time when the target battery starts to charge as a reference temperature interval;
Judging whether the current battery temperature of the target battery is higher than the maximum value of the reference temperature interval;
if the current battery temperature of the target battery is higher than the maximum value of the reference temperature interval, judging whether the charging current corresponding to the charging temperature interval in which the current battery temperature of the target battery is located is greater than the charging current corresponding to the reference temperature interval according to the constant current charging rule of the target battery; the constant current charging rule comprises a corresponding relation between a charging temperature interval and charging current;
if the charging current corresponding to the charging temperature interval of the current battery temperature of the target battery is smaller than or equal to the charging current corresponding to the reference temperature interval, determining a new target battery so as to perform constant current charging on the new target battery;
Wherein said determining a new target battery comprises:
Updating a target charging current of the battery;
Setting the battery meeting the first constraint condition as an alternative battery; wherein the first constraint condition is: the current target charging current of the alternative battery is larger than the current target charging current of the target battery, and the target charging current of the next charging temperature interval corresponding to the alternative battery is larger than the current target charging current of the target battery;
Setting the battery meeting the second constraint condition and the third constraint condition as an alternative battery; the second constraint condition is that the current target charging current of the alternative battery is larger than the current target charging current of the target battery, and the target charging current of the next charging temperature interval corresponding to the alternative battery is equal to the current target charging current of the target battery; the third constraint condition is that the difference value between the maximum value of the current charging temperature interval of the alternative battery and the current battery temperature of the alternative battery is larger than a preset value;
Judging whether the alternative battery exists or not;
If yes, setting the alternative battery as the new target battery;
If not, continuing constant current charging of the target battery.
2. The battery charge control method according to claim 1, wherein the setting the battery with the highest charge priority as the target battery includes:
sequencing the batteries according to the magnitude of the target charging current;
judging whether the maximum battery number of the target charging current is 1 or not;
If yes, setting the battery with the largest 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, the battery with the highest battery type weight in the battery with the highest target charging current is set as the battery with the highest charging priority, and the battery with the highest charging priority is set as the target battery.
3. The battery charge control method according to claim 2, wherein the battery in the power supply device includes a main battery and at least one sub-battery, and the battery type weight of the main battery is higher than the battery type weight of the sub-battery.
4. The battery charge control method according to claim 1, wherein determining a target charge current corresponding to the battery according to the battery temperature includes:
Obtaining a constant current charging rule of each battery;
inquiring a target charging current corresponding to the battery temperature according to the constant current charging rule.
5. The battery charge control method according to claim 1, characterized by further comprising:
and if the charging current corresponding to the charging temperature interval of the current battery temperature of the target battery is larger than the charging current corresponding to the reference temperature interval, continuing to perform constant-current charging on the target battery.
6. The battery charge control method according to any one of claims 1 to 5, characterized by further comprising, after constant-current charging of the target battery:
and selecting a battery farthest from the target battery as a power supply battery according to the battery arrangement position of the power supply device so as to supply electric energy for other devices through the power supply battery.
7. A battery charge control device, characterized by comprising:
the temperature acquisition module is used for acquiring the battery temperature of a battery in the power supply device if the power supply device enters a constant current charging state;
The battery setting module is used for determining a target charging current corresponding to the battery according to the battery temperature and setting the battery with the highest charging priority as a target battery; wherein the target charging current is positively correlated with the charging priority;
The charging control module is used for carrying out constant-current charging on the target battery;
The switching judging module is used for setting a charging temperature interval corresponding to the time when the target battery starts to charge as a reference temperature interval after constant-current charging is carried out on the target battery; and is further configured to determine whether a current battery temperature of the target battery is higher than a maximum value of the reference temperature interval; if the current battery temperature of the target battery is higher than the maximum value of the reference temperature interval, judging whether the charging current corresponding to the charging temperature interval in which the current battery temperature of the target battery is located is greater than the charging current corresponding to the reference temperature interval according to the constant current charging rule of the target battery; the constant current charging rule comprises a corresponding relation between a charging temperature interval and charging current;
The battery redetermining module is used for determining a new target battery if the charging current corresponding to the charging temperature interval in which the current battery temperature of the target battery is located is smaller than or equal to the charging current corresponding to the reference temperature interval, so as to perform constant current charging on the new target battery;
The battery redetermining module is used for updating the target charging current of the battery; and is further configured to set a battery that meets the first constraint as an alternative battery; wherein the first constraint condition is: the current target charging current of the alternative battery is larger than the current target charging current of the target battery, and the target charging current of the next charging temperature interval corresponding to the alternative battery is larger than the current target charging current of the target battery; and is further configured to set a battery that meets the second constraint and the third constraint as an alternative battery; the second constraint condition is that the current target charging current of the alternative battery is larger than the current target charging current of the target battery, and the target charging current of the next charging temperature interval corresponding to the alternative battery is equal to the current target charging current of the target battery; the third constraint condition is that the difference value between the maximum value of the current charging temperature interval of the alternative battery and the current battery temperature of the alternative battery is larger than a preset value; and is also used for judging whether the alternative battery exists or not; if yes, setting the alternative battery as the new target battery; if not, continuing constant current charging of the target battery.
8. An electronic device comprising power supply means comprising at least two batteries, a memory in which a computer program is stored, and a processor which when it invokes the computer program in the memory, implements the steps of the battery charge control method according to any one of claims 1 to 6.
9. A storage medium having stored therein computer executable instructions which when loaded and executed by a processor implement the steps of the battery charge control method of any of the preceding claims 1 to 6.
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