CN116667488A - Battery charge and discharge control method and device, storage medium and electronic equipment - Google Patents
Battery charge and discharge control method and device, storage medium and electronic equipment Download PDFInfo
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- CN116667488A CN116667488A CN202310637830.4A CN202310637830A CN116667488A CN 116667488 A CN116667488 A CN 116667488A CN 202310637830 A CN202310637830 A CN 202310637830A CN 116667488 A CN116667488 A CN 116667488A
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- 238000000034 method Methods 0.000 title claims abstract description 130
- 238000007600 charging Methods 0.000 claims abstract description 123
- 230000008569 process Effects 0.000 claims abstract description 77
- 238000007599 discharging Methods 0.000 claims abstract description 45
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 claims description 25
- 238000010277 constant-current charging Methods 0.000 claims description 19
- 238000010280 constant potential charging Methods 0.000 claims description 17
- 238000005070 sampling Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00308—Overvoltage protection
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- 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
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
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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
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
-
- 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
-
- 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)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a battery charge and discharge control method, a device, a storage medium and electronic equipment, and relates to the technical field of battery charge and discharge, wherein the method comprises the following steps: receiving setting data for setting charge and discharge parameters of a target battery; and controlling a charging process and/or a discharging process of the target battery based on the setting data. According to the technical scheme provided by the invention, the charge and discharge of the battery can be protected based on software, so that the charge and discharge process of the battery can be controlled more simply and flexibly.
Description
Technical Field
The present invention relates to the field of battery charging and discharging technologies, and in particular, to a battery charging and discharging control method, a device, a storage medium, and an electronic apparatus.
Background
The traditional battery charge and discharge protection is realized by matching a charge management IC (Integrated Circuit Chip ) and a peripheral MOS tube, and the method is well realized for the condition that the conventional voltage and current are not very large. However, with the advent of new energy industry, battery requirements for various voltages are increasing, and particularly, in the case of irregular battery voltages with some customized products, it is difficult to match the requirements of the protection IC and the MOS transistor.
Therefore, the protection of the battery charge and discharge in the prior art is completely dependent on a hardware circuit, so that the operation is complicated, the design cost is high, and a battery protection system which completely meets the requirements is difficult to design.
Disclosure of Invention
Aiming at the problems in the prior art, the application provides a battery charge and discharge control method, a device, a storage medium and electronic equipment, which can protect the charge and discharge of a battery based on software, thereby controlling the charge and discharge process of the battery more simply and flexibly.
In order to achieve the above purpose, the technical scheme of the application is realized as follows:
in a first aspect, an embodiment of the present application provides a battery charge and discharge control method, where the method includes:
receiving setting data for setting charge and discharge parameters of a target battery;
and controlling a charging process and/or a discharging process of the target battery based on the setting data.
In some embodiments, the charge-discharge parameters include: a precharge voltage and a charge switching voltage; the setting data includes: a first voltage value set for the precharge voltage and a second voltage value set for the charge switching voltage; the controlling the charging process of the target battery based on the setting data includes:
Detecting the current voltage value of the target battery in real time;
trickle charging the target battery when the current voltage value is less than the first voltage value;
when the current voltage value is larger than or equal to the first voltage value and smaller than the second voltage value, constant-current charging is conducted on the target battery;
and when the current voltage value is larger than or equal to the second voltage value, performing constant voltage charging on the target battery.
In some embodiments, the charge-discharge parameters further comprise: trickle charge current, constant current charge current, and constant voltage charge voltage; the setting data further includes: a first current value set for the trickle charge current, a second current value set for the constant current charge current, and a third voltage value set for the constant voltage charge voltage; and when the current voltage value is smaller than the first voltage value, trickle charging the target battery, including:
when the current voltage value is smaller than the first voltage value, trickle charging the target battery by adopting the first current value;
and when the current voltage value is greater than or equal to the first voltage value and less than the second voltage value, performing constant current charging on the target battery, including:
When the current voltage value is larger than or equal to the first voltage value and smaller than the second voltage value, constant-current charging is conducted on the target battery by adopting the second current value;
and when the current voltage value is greater than or equal to the second voltage value, performing constant voltage charging on the target battery, including:
and when the current voltage value is larger than or equal to the second voltage value, constant voltage charging is conducted on the target battery by adopting the third voltage value.
In some embodiments, the charge-discharge parameters further comprise: overcharge voltage and overcharge current; the setting data further includes: a fourth voltage value set for the overcharge voltage and a third current value set for the overcharge current; the controlling the charging process of the target battery based on the setting data further includes:
detecting the current charging current value of the target battery in real time;
and when the current voltage value is greater than or equal to the fourth voltage value or the current charging current value is greater than or equal to the third current value, performing overcharge protection on the target battery.
In some embodiments, the performing overcharge protection on the target battery when the current voltage value is equal to or greater than the fourth voltage value or when the current charge current value is equal to or greater than the third current value includes:
And when the current voltage value is greater than or equal to the fourth voltage value, or when the current charging current value is greater than or equal to the third current value, the charging switch of the target battery is disconnected to stop charging the target battery.
In some embodiments, the charge-discharge parameters further comprise: overdischarge voltage and overdischarge current; the setting data further includes: a fifth voltage value set for the overdischarge voltage and a fourth current value set for the overdischarge current; the controlling the discharging process of the target battery based on the setting data includes:
detecting the current discharge current value of the target battery in real time;
and when the current voltage value is smaller than the fifth voltage value or the current discharge current value is larger than or equal to the fourth current value, performing over-discharge protection on the target battery.
In some embodiments, the over-discharge protection of the target battery when the present voltage value is smaller than the fifth voltage value or when the present discharge current value is equal to or greater than the fourth current value includes:
and when the current voltage value is smaller than the fifth voltage value or the current discharging current value is larger than or equal to the fourth current value, the discharging switch of the target battery is disconnected to stop discharging the target battery.
In some embodiments, a plurality of parallel manganese copper wires are used as current sampling resistors in the process of detecting the current charge current value of the target battery or detecting the current discharge current value of the target battery in real time.
In some embodiments, the charge switch and the discharge switch are both MOS transistors.
In some embodiments, prior to charging the target battery, the method further comprises:
detecting a current surface temperature of the target battery;
judging whether the current surface temperature is in a preset temperature range or not;
the controlling the charging process of the target battery based on the setting data includes:
and controlling the charging process of the target battery based on the setting data when the current surface temperature is within the preset temperature range.
In some embodiments, prior to charging the target battery, the method further comprises:
and when the current surface temperature is not in the preset temperature range, performing heating or cooling operation on the target battery so that the current surface temperature is in the preset temperature range.
In some embodiments, the method further comprises:
Detecting the current surface temperature of the target battery in real time in the process of charging the target battery;
judging whether the current surface temperature is in a preset temperature range or not;
and stopping charging the target battery when the current surface temperature is not in the preset temperature range.
In a second aspect, an embodiment of the present invention provides a battery charge and discharge control device, including:
a receiving unit configured to receive setting data for setting charge and discharge parameters of a target battery;
and the control unit is used for controlling the charging process and/or the discharging process of the target battery based on the setting data.
In a third aspect, an embodiment of the present invention provides a computer-readable storage medium having stored thereon program code that, when executed by a processor, implements a battery charge and discharge control method according to any of the above embodiments.
In a fourth aspect, an embodiment of the present invention provides an electronic device, where the electronic device includes a memory and a processor, and the memory stores program codes that can be executed on the processor, and the program codes implement the battery charge and discharge control method according to any one of the foregoing embodiments when executed by the processor.
According to the battery charge and discharge control method, device, storage medium and electronic equipment provided by the embodiment of the invention, the charge and discharge process and/or discharge process of the target battery are controlled based on the setting data by receiving the setting data for setting the charge and discharge parameters of the target battery, so that the charge and discharge process of the target battery can be controlled based on the setting data, namely, the charge and discharge process of the target battery can be protected based on a software control flow, different charge and discharge protection circuits are not required to be designed for batteries with different specifications like the prior art, and the simplicity and flexibility of charge and discharge protection of the battery are greatly improved. Therefore, the technical scheme provided by the invention can protect the charge and discharge of the battery based on software, so that the charge and discharge process of the battery can be controlled more simply and flexibly.
Drawings
The scope of the present disclosure will be better understood from the following detailed description of exemplary embodiments, read in conjunction with the accompanying drawings. The drawings included herein are:
FIG. 1 is a flow chart of a method according to an embodiment of the present invention;
FIG. 2 is a flow chart of a second method according to an embodiment of the invention;
FIG. 3 is a system block diagram of an embodiment of the present invention;
FIG. 4 is a schematic circuit diagram of a current sampling resistor using a manganese-copper wire in an embodiment of the invention;
FIG. 5 is a first device configuration diagram according to an embodiment of the present invention;
fig. 6 is a second device structure diagram according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the implementation method of the present invention will be given with reference to the accompanying drawings and examples, by which the technical means are applied to solve the technical problems, and the implementation process for achieving the technical effects can be fully understood and implemented accordingly.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
Example 1
The traditional battery charge and discharge protection is realized by matching a charge management IC and a peripheral MOS tube, and the method is well realized for the condition that the conventional voltage and current are not very large. However, with the advent of new energy industry, battery requirements for various voltages are increasing, and particularly, in the case of irregular battery voltages with some customized products, it is difficult to match the requirements of the protection IC and the MOS transistor. The "unconventional" is understood to be a custom product, that is, the charging voltage, the charging current, the discharging voltage, the discharging current, and other charging and discharging parameters are all custom.
Taking a single battery as an example, after the specific model is determined, the charge and discharge parameters such as the overcharge protection voltage, the overdischarge protection voltage and the like are also determined. In the prior art, the charge and discharge parameters are set according to the internal resistance of the matched MOS tube, and the internal resistance distribution of the MOS tube on the market at present is irregular, so that the parameter types required by the charge and discharge battery meeting the requirements can not be found.
Aiming at the technical problems, the invention provides a battery charge-discharge protection mode with unconventional voltage, and solves the defect that a charge-discharge protection circuit is dependent on MOS tube characteristics to carry out circuit design.
Based on the foregoing, the embodiment of the present invention provides a battery charge and discharge control method, as shown in fig. 1, where the battery charge and discharge control method in this embodiment includes step S101 and step S102, and the following details of these steps are described in detail below:
step S101, receiving setting data for setting charge and discharge parameters of a target battery;
step S102, controlling a charging process and/or a discharging process of the target battery based on the setting data.
In this embodiment, the user sets the charge and discharge parameters of the target battery, where the user is a developer of the target battery and knows various charge and discharge parameters of the target battery. Based on the setting of the charge and discharge parameters of the target battery by the user, the system can automatically control the charge process and/or the discharge process of the target battery according to the user's expectations, so that the charge and discharge control of the target battery is simpler, more convenient and flexible.
In order to control the charging mode of the target battery more flexibly and effectively improve the service life of the battery, the charging and discharging parameters in this embodiment include: the precharge voltage and the charge switching voltage, correspondingly, the setting data described in this embodiment includes: a first voltage value set for the precharge voltage and a second voltage value set for the charge switching voltage. On the premise of this, the controlling the charging process of the target battery based on the setting data according to the embodiment includes: detecting the current voltage value of the target battery in real time; trickle charging the target battery when the current voltage value is less than the first voltage value; when the current voltage value is larger than or equal to the first voltage value and smaller than the second voltage value, constant-current charging is conducted on the target battery; and when the current voltage value is larger than or equal to the second voltage value, performing constant voltage charging on the target battery.
In order to further flexibly and effectively control the charging mode of the target battery, the charging and discharging parameters in this embodiment further include: trickle charge current, constant current charge current and constant voltage charge voltage, correspondingly, the setting data further comprises: a first current value set for the trickle charge current, a second current value set for the constant current charge current, and a third voltage value set for the constant voltage charge voltage. On this premise, when the current voltage value is smaller than the first voltage value, trickle charging the target battery according to the embodiment includes: when the current voltage value is smaller than the first voltage value, trickle charging the target battery by adopting the first current value; according to this embodiment, when the current voltage value is greater than or equal to the first voltage value and less than the second voltage value, constant current charging is performed on the target battery, including: when the current voltage value is larger than or equal to the first voltage value and smaller than the second voltage value, constant-current charging is conducted on the target battery by adopting the second current value; in this embodiment, when the current voltage value is equal to or greater than the second voltage value, performing constant voltage charging on the target battery includes: and when the current voltage value is larger than or equal to the second voltage value, constant voltage charging is conducted on the target battery by adopting the third voltage value.
Specifically, the present embodiment divides the charging process of the battery into three stages: trickle charge, constant current charge, and constant voltage charge. In this embodiment, when the battery voltage is below 42V, a 500mA current is used for trickle charging; when the battery voltage reaches 42V, constant current charging is carried out by adopting constant current of 24A; when the battery voltage reached 55V, constant voltage charging was performed with a constant voltage of 58V. Therefore, the charging process of the battery can be controlled more accurately and effectively, and the service life of the battery can be remarkably prolonged.
The principle of the switching and control process of the charging stage according to the present embodiment is as follows: as shown in fig. 3, the controllable constant voltage and constant current source in this embodiment has a current setting port and a voltage setting port, and the controller (in this embodiment, a single chip microcomputer) sets the voltage of the ports through the constant current and constant voltage control circuit.
When trickle charge is carried out, the output current of the controllable constant voltage constant current source can be controlled to be 500mA through the voltage of the current setting port, the battery is connected in parallel with the controllable constant voltage constant current source, the output voltage of the controllable constant voltage constant current source is equal to the voltage at two ends of the battery, the voltage of the battery is continuously increased along with the progress of the charging process, and when the voltage of the battery reaches 42V, the singlechip detects the voltage, and then the output current of the controllable constant voltage constant current source is controlled to be 24A through the voltage of the current setting port, so that the constant current charge is carried out.
In the constant current charging process, the battery voltage continuously rises, when the battery voltage rises to 55V, the singlechip detects the voltage, the output voltage of the controllable constant voltage constant current source is set to 58V through the voltage of the voltage setting port, the constant voltage charging is carried out, the battery voltage continuously rises in the charging process, the internal resistance of the battery continuously increases, the charging current gradually decreases, and when the charging current is as small as 0.01C, the charging is completed.
The controllable constant-voltage constant-current source adopted by the embodiment has the setting function of any current value and any voltage value. The current value and the voltage value are set similarly by supplying a driving voltage of 0-5V to the corresponding port. For example, in the present embodiment, the current setting manner is as follows:
1) When the voltage of the current setting port is set to 1V, the controllable constant voltage constant current source provides a constant current of 500 mA.
2) The controllable constant voltage constant current source provides a constant current of 24A when the voltage of the current setting port is set to 4V.
In this embodiment, the voltage setting method is as follows:
1) When the voltage of the voltage setting port is set to 1V, the controllable constant voltage constant current source provides a 40V constant voltage output.
2) The controllable constant voltage constant current source provides a 58V constant voltage output when the voltage of the voltage setting port is set to 4V.
In the present embodiment, the voltages required for the current setting port and the voltage setting port are supplied by the constant current constant voltage control circuit.
The power management unit in fig. 3 includes a 58V to 24V step-down circuit and a 24V to 3V step-down circuit. Wherein 3V is the supply voltage of the singlechip, and 24V is the voltage of the operational discharge source of the constant-current constant-voltage control circuit. In this embodiment, the charging switch and the discharging switch are both MOS transistors, and the maximum workflow is not lower than 100A.
In order to effectively protect the battery in the charging process and improve the service life of the battery, the charging and discharging parameters in this embodiment further include: the overcharge voltage and the overcharge current, respectively, the setting data further includes: a fourth voltage value set for the overcharge voltage and a third current value set for the overcharge current. On the premise of this, the controlling the charging process of the target battery based on the setting data according to the embodiment further includes: detecting the current charging current value of the target battery in real time; and when the current voltage value is greater than or equal to the fourth voltage value or the current charging current value is greater than or equal to the third current value, performing overcharge protection on the target battery.
In order to conveniently and effectively perform overcharge protection on a target battery, in this embodiment, when the current voltage value is equal to or greater than the fourth voltage value, or when the current charging current value is equal to or greater than the third current value, the method includes: and when the current voltage value is greater than or equal to the fourth voltage value, or when the current charging current value is greater than or equal to the third current value, the charging switch of the target battery is disconnected to stop charging the target battery.
In order to make the sampling current more stable and thus more accurately detect the current charging current value of the target battery, in this embodiment, in the process of detecting the current charging current value of the target battery in real time, a plurality of parallel manganese copper wires are used as current sampling resistors. Meanwhile, in order to respond to the on-off action more timely, the charging switch in the embodiment is a MOS tube. In practical application, the on/off state of the MOS transistor is controlled to control whether to charge the target battery.
As shown in fig. 4, U20, U5, U23, and U24 are four parallel manganese copper wires. The overcharge protection principle of the target battery in this embodiment is that in the charging process, whether the charging current exceeds the set overcharge current is judged by detecting the voltages on the manganese copper wires U5, U20, U23 and U24. The detection mode is that the resistance of each manganese copper wire is 2mR, and the resistance value of four manganese copper wires connected in parallel is 2mR/4. The overcharge current set in this embodiment is 25A, and when the voltage on the manganese copper wire is higher than (2 mR/4) 25 a=0.0125V, the target battery is determined to be in the overcharged state. However, because the voltage on the manganese copper wire is smaller and cannot be accurately detected, the voltage is amplified by the voltage amplifying circuit, and the calculation formula is as follows: vout=52 (0.1+loadp)/3, where Loadp is the voltage on the manganese copper wire, vout=1.95V is calculated. That is, the controller may directly detect the output voltage of the voltage amplifying circuit, and determine that the target battery is in an overcharged state when detecting that the output voltage thereof is 1.95V or more. At this time, the controller controls the charge switch MOS transistor Q1 to be turned off, and stops charging the target battery, thereby realizing the protection of the target battery.
Meanwhile, in the charging process, the battery voltage detection circuit detects the current voltage value of the target battery in real time, and when the current voltage value of the target battery is greater than or equal to the set overcharging voltage, for example, 58.6V, the controller controls the charging switch MOS tube Q1 to be disconnected, and the charging of the target battery is stopped, so that the protection of the target battery is realized.
In this embodiment, the controller is a single-chip microcomputer.
In fig. 4, U11 is a target battery, Q1 is a charge switch, Q13 is a discharge switch, U21 is a heat sink of Q1, U25 is an interface of a controllable constant voltage and constant current source, VBAT represents the positive electrode of the target battery, power_ctrl is a network of a singlechip control transistor Q3, and lodp is the output of a sampling voltage.
In order to effectively protect the battery in the discharging process and improve the service life of the battery, the charging and discharging parameters in this embodiment further include: the over-discharge voltage and the over-discharge current, respectively, the setting data further includes: a fifth voltage value set for the overdischarge voltage and a fourth current value set for the overdischarge current. On the premise of this, the controlling the discharging process of the target battery based on the setting data according to the embodiment includes: detecting the current discharge current value of the target battery in real time; and when the current voltage value is smaller than the fifth voltage value or the current discharge current value is larger than or equal to the fourth current value, performing over-discharge protection on the target battery.
In order to conveniently and effectively perform over-discharge protection on a target battery, in this embodiment, when the current voltage value is smaller than the fifth voltage value, or when the current discharge current value is greater than or equal to the fourth current value, the over-discharge protection on the target battery includes: and when the current voltage value is smaller than the fifth voltage value or the current discharging current value is larger than or equal to the fourth current value, the discharging switch of the target battery is disconnected to stop discharging the target battery.
In order to make the sampling current more stable and thus more accurately detect the current discharge current value of the target battery, in this embodiment, in the process of detecting the current discharge current value of the target battery in real time, a plurality of parallel manganese copper wires are used as current sampling resistors. Meanwhile, in order to respond to the on-off action more timely, the discharging switch in the embodiment is a MOS tube. In practical application, the on/off state of the MOS transistor is controlled to control whether to discharge the target battery.
The resistance of the manganese-copper wire is 2mR, and the current flowing through the manganese-copper wire is charging current or discharging current, so that voltage can be generated on the manganese-copper wire. When the direction of the charging current is positive, the detected voltage on the manganese-copper wire is negative during discharging, and the singlechip can only detect positive voltage and cannot detect negative voltage, so that the negative voltage is converted into positive voltage through the voltage amplifying circuit.
As shown in fig. 4, U20, U5, U23, and U24 are four parallel manganese copper wires. The principle of overdischarge protection of the target battery in this embodiment is that in the discharging process, whether the discharging current exceeds the set overdischarge current is judged by detecting the voltages on the manganese copper wires U5, U20, U23, and U24. The detection mode is that the resistance of each manganese copper wire is 2mR, and the resistance value of four manganese copper wires connected in parallel is 2mR/4. The overdischarge current set in this embodiment is 72A, and when the voltage on the manganese copper wire is higher than (2 mR/4) ×72a= -0.036v, the target battery is determined to be in the overdischarge state. However, because the voltage on the manganese copper wire is smaller and cannot be accurately detected, the voltage is amplified by the voltage amplifying circuit, and the calculation formula is as follows: vout=52 (0.1+loadp)/3, where Loadp is the voltage on the manganese copper wire, vout=1.11V is calculated. That is, the controller may directly detect the output voltage of the voltage amplifying circuit, and determine that the target battery is in the over-discharge state when detecting that the output voltage is 1.11V or more. At this time, the controller controls the charge switch MOS transistor Q13 to be turned off, and stops discharging the target battery, thereby realizing the protection of the target battery.
Meanwhile, in the discharging process, the battery voltage detection circuit detects the current voltage value of the target battery in real time, and when the current voltage value of the target battery is smaller than the set overdischarge voltage, for example, 40V, the controller controls the discharging switch MOS tube Q13 to be disconnected, and the discharging of the target battery is stopped, so that the protection of the target battery is realized.
According to the technical scheme, the external instruction expansion function is integrated, and a user can send corresponding instructions to the singlechip through the interface to freely set charge and discharge parameters. A power cell with a full voltage of 58.5V is taken as an example for brief explanation. The final voltage of the fully charged power battery is 58.5V, the discharge cut-off voltage (namely over discharge voltage) is 40V, the trickle charge current is 0.1C, and the constant current charge current is 1C. Wherein C is the battery capacity.
1) Arrangement of voltage
AT+Vcharge+L＝45V
Indicating that the precharge voltage is set to 45V, when the battery voltage is lower than 45V, charging is performed with a precharge current of 0.2C (i.e., trickle charging); when the battery voltage is higher than 45V, constant current charging is performed at a constant current of 1C.
AT+Vcharge+H＝58.5V
It means that the constant voltage charging voltage was set to 58.5V, charged at constant voltage, and the battery was charged when the charging current was reduced to 0.01C.
AT+Vdischarge+L＝40V
Indicating that the overdischarge voltage is set to 40V, and overdischarge protection is entered when the battery voltage is lower than 40V.
AT+Vcharge+O＝59V
Indicating that the overcharge voltage is set to 59V, and the overcharge protection is entered when the battery voltage is higher than 59V.
2) Arrangement of electric current
AT+Ccharge+J＝0.2C
Indicating that the trickle charge current is set to 0.2C.
AT+Ccharge+H＝1C
Indicating that the constant current charging current is set to 1C.
AT+Cdischarge+S＝10C
The over-discharge current is set to 10C, and when the discharge current of the battery exceeds 10C, the over-discharge protection is entered.
Wherein the AT indicates that the instruction starts with an AT character; vcharge represents the charging voltage to be set;
vdischarge represents a discharge voltage to be set; ccharge represents a charging current; j corresponds to trickle charge; h corresponds to constant current charging.
In order to enable the target battery to be located in the safe charging temperature range so as to perform more effective charging protection on the target battery, as shown in fig. 2, before the target battery is charged, the method in this embodiment further includes: detecting a current surface temperature of the target battery; judging whether the current surface temperature is in a preset temperature range, and on the premise that the current surface temperature is in the preset temperature range, controlling the charging process of the target battery based on the setting data according to the embodiment includes: and controlling the charging process of the target battery based on the setting data when the current surface temperature is within the preset temperature range.
In order to timely charge the target battery which does not meet the temperature requirement and timely meet the user requirement, before charging the target battery, as shown in fig. 2, the method in this embodiment further includes: and when the current surface temperature is not in the preset temperature range, performing heating or cooling operation on the target battery so that the current surface temperature is in the preset temperature range.
In order to more effectively protect the target battery during the charging process, the method according to the embodiment further includes: detecting the current surface temperature of the target battery in real time in the process of charging the target battery; judging whether the current surface temperature is in a preset temperature range or not; and stopping charging the target battery when the current surface temperature is not in the preset temperature range.
Specifically, compared with the traditional charge protection scheme, the temperature control system is added in the embodiment. Because the safe temperature of battery charging is 0-40 ℃, the system detects the surface temperature of the battery in real time through the temperature sensitive probe, when the surface temperature of the battery is lower than 0 ℃, the system starts resistance wire heating, and when the surface temperature of the battery exceeds 0 ℃ and is between 0 and 40 ℃, the battery starts to be charged. When the surface temperature of the battery is higher than 40 ℃, stopping charging the battery, starting a fan, cooling, and when the surface temperature of the battery is between 0 and 40 ℃ again, charging the battery again, and repeating the steps.
The temperature sensitive probe is arranged on the surface of the target battery, and the resistance wire and the fan are all close to the target battery. And the temperature sensitive probe, the resistance wire and the fan are all arranged in the temperature control system shown in fig. 3.
The temperature control system provided by the embodiment can solve the technical problem that the conventional charging scheme cannot charge in a low-temperature state.
The invention is characterized in that a programmable interface is expanded on the basis of the traditional charging circuit, a user can communicate with the singlechip through the interface, and charge and discharge parameters are freely set according to requirements. The user can send corresponding instructions through the instruction finger opening to set parameters such as charging voltage, charging current, overcharging voltage, overcharging current, overdischarging voltage and the like so as to meet the charging and discharging requirements of various batteries with different specifications. Meanwhile, the manganese copper wire is used as a current sampling resistor and matched with a high-power low-resistance MOS tube, so that the upper limit of current which can pass through the circuit is effectively improved.
According to the battery charge and discharge control method provided by the embodiment of the invention, the charge process and/or the discharge process of the target battery is controlled based on the setting data by receiving the setting data for setting the charge and discharge parameters of the target battery, so that the charge process and/or the discharge process of the target battery can be controlled based on the setting data, namely, the charge and discharge process of the target battery can be protected based on a software control flow, different charge and discharge protection circuits are prevented from being designed for batteries with different specifications like the prior art, and the simplicity and flexibility of charge and discharge protection of the battery are greatly improved. Therefore, the technical scheme provided by the invention can protect the charge and discharge of the battery based on software, so that the charge and discharge process of the battery can be controlled more simply and flexibly.
Example two
Corresponding to the above method embodiment, the present invention further provides a battery charge and discharge control device, as shown in fig. 5, where the device in this embodiment includes:
a receiving unit 201 for receiving setting data for setting charge and discharge parameters of a target battery;
a control unit 202 for controlling a charging process and/or a discharging process of the target battery based on the setting data.
In this embodiment, the charge and discharge parameters include: a precharge voltage and a charge switching voltage; the setting data includes: a first voltage value set for the precharge voltage and a second voltage value set for the charge switching voltage; the control unit 202 includes:
the voltage detection unit is used for detecting the current voltage value of the target battery in real time;
a trickle charging unit for trickle charging the target battery when the current voltage value is smaller than the first voltage value;
the constant current charging unit is used for performing constant current charging on the target battery when the current voltage value is larger than or equal to the first voltage value and smaller than the second voltage value;
and the constant voltage charging unit is used for carrying out constant voltage charging on the target battery when the current voltage value is larger than or equal to the second voltage value.
In this embodiment, the charge and discharge parameters further include: trickle charge current, constant current charge current, and constant voltage charge voltage; the setting data further includes: a first current value set for the trickle charge current, a second current value set for the constant current charge current, and a third voltage value set for the constant voltage charge voltage; the trickle charging unit trickles-charges the target battery in the following manner:
when the current voltage value is smaller than the first voltage value, trickle charging the target battery by adopting the first current value;
the constant current charging unit is used for carrying out constant current charging on the target battery in the following mode:
when the current voltage value is larger than or equal to the first voltage value and smaller than the second voltage value, constant-current charging is conducted on the target battery by adopting the second current value;
the constant voltage charging unit performs constant voltage charging on the target battery in the following manner:
and when the current voltage value is larger than or equal to the second voltage value, constant voltage charging is conducted on the target battery by adopting the third voltage value.
In this embodiment, the charge and discharge parameters further include: overcharge voltage and overcharge current; the setting data further includes: a fourth voltage value set for the overcharge voltage and a third current value set for the overcharge current; the control unit 202 further comprises:
The current detection unit is used for detecting the current charging current value of the target battery in real time;
and the overcharge protection unit is used for carrying out overcharge protection on the target battery when the current voltage value is greater than or equal to the fourth voltage value or the current charging current value is greater than or equal to the third current value.
In this embodiment, the overcharge protection unit performs overcharge protection on the target battery in the following manner:
and when the current voltage value is greater than or equal to the fourth voltage value, or when the current charging current value is greater than or equal to the third current value, the charging switch of the target battery is disconnected to stop charging the target battery.
In this embodiment, the charge and discharge parameters further include: overdischarge voltage and overdischarge current; the setting data further includes: a fifth voltage value set for the overdischarge voltage and a fourth current value set for the overdischarge current; the current detection unit is also used for detecting the current discharge current value of the target battery in real time;
the control unit 202 further comprises:
and the over-discharge protection unit is used for performing over-discharge protection on the target battery when the current voltage value is smaller than the fifth voltage value or the current discharge current value is larger than or equal to the fourth current value.
In this embodiment, the over-discharge protection unit performs over-discharge protection on the target battery in the following manner:
and when the current voltage value is smaller than the fifth voltage value or the current discharging current value is larger than or equal to the fourth current value, the discharging switch of the target battery is disconnected to stop discharging the target battery.
In this embodiment, the current detection unit uses a plurality of parallel manganese copper wires as the current sampling resistor.
In this embodiment, the charging switch and the discharging switch are both MOS transistors.
Further, as shown in fig. 6, the apparatus according to this embodiment further includes:
a temperature detection unit 203 for detecting a current surface temperature of the target battery before charging the target battery;
a temperature determining unit 204, configured to determine whether the current surface temperature is within a preset temperature range;
the control unit 202 is further configured to control a charging process of the target battery based on the setting data when the current surface temperature is within the preset temperature range.
Further, as shown in fig. 6, the apparatus according to this embodiment further includes:
and a temperature adjustment unit 205 configured to perform a temperature raising or lowering operation on the target battery so that the current surface temperature is located in the preset temperature range when the current surface temperature is not located in the preset temperature range before charging the target battery.
In this embodiment, the temperature detecting unit 203 is further configured to detect, in real time, a current surface temperature of the target battery during the process of charging the target battery;
the temperature judging unit 204 is configured to judge whether the current surface temperature is within a preset temperature range;
the control unit 202 is further configured to stop charging the target battery when the current surface temperature is not within the preset temperature range.
The working principle, working procedure, etc. of the above device may refer to the specific implementation of the battery charge and discharge control method provided by the present invention, and the same technical content will not be described in detail herein.
According to the battery charge and discharge control device provided by the embodiment of the invention, the charge process and/or the discharge process of the target battery are controlled based on the setting data by receiving the setting data for setting the charge and discharge parameters of the target battery, so that the charge process and/or the discharge process of the target battery can be controlled based on the setting data, namely, the charge and discharge process of the target battery can be protected based on a software control flow, different charge and discharge protection circuits are prevented from being designed for batteries with different specifications like the prior art, and the simplicity and flexibility of charge and discharge protection of the battery are greatly improved. Therefore, the technical scheme provided by the invention can protect the charge and discharge of the battery based on software, so that the charge and discharge process of the battery can be controlled more simply and flexibly.
Example III
According to an embodiment of the present invention, there is also provided a computer-readable storage medium having stored thereon program code which, when executed by a processor, implements the battery charge and discharge control method as described in the above embodiment.
Example IV
According to an embodiment of the present invention, there is also provided an electronic device including a memory and a processor, where the memory stores a program code executable on the processor, and when the program code is executed by the processor, the method for controlling battery charge and discharge according to the above embodiment is implemented.
According to the battery charge and discharge control method, device, storage medium and electronic equipment provided by the embodiment of the invention, the charge and discharge process and/or discharge process of the target battery are controlled based on the setting data by receiving the setting data for setting the charge and discharge parameters of the target battery, so that the charge and discharge process of the target battery can be controlled based on the setting data, namely, the charge and discharge process of the target battery can be protected based on a software control flow, different charge and discharge protection circuits are not required to be designed for batteries with different specifications like the prior art, and the simplicity and flexibility of charge and discharge protection of the battery are greatly improved. Therefore, the technical scheme provided by the invention can protect the charge and discharge of the battery based on software, so that the charge and discharge process of the battery can be controlled more simply and flexibly.
The application solves the following technical problems:
1. the battery protection device solves the problem of charge and discharge protection of batteries with unconventional voltages, and flexibly matches with battery protection of various voltages;
2. the battery charging and discharging threshold value is freely set according to the product requirement, the problem that parameters cannot be set due to single charging management specification in the conventional method is solved, and the service life of the battery is prolonged;
3. and the charging current, the charging voltage, the overcharging voltage, the overdischarging voltage, the overcharging current and the overdischarging current are freely set through the command interface.
4. For a large-current battery, the MOS tube has high cost and serious heating, and the application can reduce the cost and enhance the efficiency.
The application also has the following technical effects:
1. the cost is reduced, the efficiency is improved, and the service life of the battery is prolonged;
2. the problem of charge and discharge protection of an unconventional voltage battery or a customized specific voltage battery is solved;
3. the independent instruction interface can freely set various charge and discharge parameters.
The application can be applied to the charge and discharge protection of the power battery.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of elements is merely a logical functional division, and there may be additional divisions of actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment of the present invention.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention is essentially or a part contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, comprising several instructions for causing an electronic device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Although the embodiments of the present invention are disclosed above, the embodiments are only used for the convenience of understanding the present invention, and are not intended to limit the present invention. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is still subject to the scope of the present disclosure as defined by the appended claims.
Claims (15)
1. A battery charge and discharge control method, the method comprising:
receiving setting data for setting charge and discharge parameters of a target battery;
and controlling a charging process and/or a discharging process of the target battery based on the setting data.
2. The battery charge-discharge control method according to claim 1, wherein the charge-discharge parameters include: a precharge voltage and a charge switching voltage; the setting data includes: a first voltage value set for the precharge voltage and a second voltage value set for the charge switching voltage; the controlling the charging process of the target battery based on the setting data includes:
Detecting the current voltage value of the target battery in real time;
trickle charging the target battery when the current voltage value is less than the first voltage value;
when the current voltage value is larger than or equal to the first voltage value and smaller than the second voltage value, constant-current charging is conducted on the target battery;
and when the current voltage value is larger than or equal to the second voltage value, performing constant voltage charging on the target battery.
3. The battery charge-discharge control method according to claim 2, wherein the charge-discharge parameters further include: trickle charge current, constant current charge current, and constant voltage charge voltage; the setting data further includes: a first current value set for the trickle charge current, a second current value set for the constant current charge current, and a third voltage value set for the constant voltage charge voltage; and when the current voltage value is smaller than the first voltage value, trickle charging the target battery, including:
when the current voltage value is smaller than the first voltage value, trickle charging the target battery by adopting the first current value;
and when the current voltage value is greater than or equal to the first voltage value and less than the second voltage value, performing constant current charging on the target battery, including:
When the current voltage value is larger than or equal to the first voltage value and smaller than the second voltage value, constant-current charging is conducted on the target battery by adopting the second current value;
and when the current voltage value is greater than or equal to the second voltage value, performing constant voltage charging on the target battery, including:
and when the current voltage value is larger than or equal to the second voltage value, constant voltage charging is conducted on the target battery by adopting the third voltage value.
4. The battery charge-discharge control method according to claim 2, wherein the charge-discharge parameters further include: overcharge voltage and overcharge current; the setting data further includes: a fourth voltage value set for the overcharge voltage and a third current value set for the overcharge current; the controlling the charging process of the target battery based on the setting data further includes:
detecting the current charging current value of the target battery in real time;
and when the current voltage value is greater than or equal to the fourth voltage value or the current charging current value is greater than or equal to the third current value, performing overcharge protection on the target battery.
5. The battery charge-discharge control method according to claim 4, wherein the performing overcharge protection on the target battery when the present voltage value is equal to or greater than the fourth voltage value or when the present charge current value is equal to or greater than the third current value, comprises:
And when the current voltage value is greater than or equal to the fourth voltage value, or when the current charging current value is greater than or equal to the third current value, the charging switch of the target battery is disconnected to stop charging the target battery.
6. The battery charge-discharge control method according to claim 5, wherein the charge-discharge parameters further include: overdischarge voltage and overdischarge current; the setting data further includes: a fifth voltage value set for the overdischarge voltage and a fourth current value set for the overdischarge current; the controlling the discharging process of the target battery based on the setting data includes:
detecting the current discharge current value of the target battery in real time;
and when the current voltage value is smaller than the fifth voltage value or the current discharge current value is larger than or equal to the fourth current value, performing over-discharge protection on the target battery.
7. The battery charge-discharge control method according to claim 6, wherein the over-discharge protection of the target battery when the present voltage value is smaller than the fifth voltage value or when the present discharge current value is equal to or larger than the fourth current value, comprises:
And when the current voltage value is smaller than the fifth voltage value or the current discharging current value is larger than or equal to the fourth current value, the discharging switch of the target battery is disconnected to stop discharging the target battery.
8. The battery charge-discharge control method according to claim 7, wherein a plurality of parallel manganese copper wires are used as the current sampling resistor in detecting the current charge current value of the target battery in real time or detecting the current discharge current value of the target battery in real time.
9. The battery charge and discharge control method according to claim 7, wherein the charge switch and the discharge switch are both MOS transistors.
10. The battery charge-discharge control method according to claim 1, characterized in that before charging the target battery, the method further comprises:
detecting a current surface temperature of the target battery;
judging whether the current surface temperature is in a preset temperature range or not;
the controlling the charging process of the target battery based on the setting data includes:
and controlling the charging process of the target battery based on the setting data when the current surface temperature is within the preset temperature range.
11. The battery charge-discharge control method according to claim 10, characterized in that before charging the target battery, the method further comprises:
and when the current surface temperature is not in the preset temperature range, performing heating or cooling operation on the target battery so that the current surface temperature is in the preset temperature range.
12. The battery charge-discharge control method according to claim 1, characterized in that the method further comprises:
detecting the current surface temperature of the target battery in real time in the process of charging the target battery;
judging whether the current surface temperature is in a preset temperature range or not;
and stopping charging the target battery when the current surface temperature is not in the preset temperature range.
13. A battery charge and discharge control device, the device comprising:
a receiving unit configured to receive setting data for setting charge and discharge parameters of a target battery;
and the control unit is used for controlling the charging process and/or the discharging process of the target battery based on the setting data.
14. A computer-readable storage medium having stored thereon a program code, wherein the program code, when executed by a processor, implements the battery charge-discharge control method according to any one of claims 1 to 12.
15. An electronic device comprising a memory, a processor, the memory having stored thereon program code executable on the processor, the program code, when executed by the processor, implementing the battery charge and discharge control method of any of claims 1 to 12.
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| CN202310637830.4A CN116667488A (en) | 2023-05-31 | 2023-05-31 | Battery charge and discharge control method and device, storage medium and electronic equipment |
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| CN202310637830.4A CN116667488A (en) | 2023-05-31 | 2023-05-31 | Battery charge and discharge control method and device, storage medium and electronic equipment |
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