CN117578644A - Charger and charging method thereof - Google Patents

Charger and charging method thereof Download PDF

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Publication number
CN117578644A
CN117578644A CN202311326189.9A CN202311326189A CN117578644A CN 117578644 A CN117578644 A CN 117578644A CN 202311326189 A CN202311326189 A CN 202311326189A CN 117578644 A CN117578644 A CN 117578644A
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CN
China
Prior art keywords
charging
charging mode
battery
mode
charger
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Pending
Application number
CN202311326189.9A
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Chinese (zh)
Inventor
程志明
程杰
叶剑
陈�胜
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Lead Lithium Zhixing Beijing Technology Co ltd
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Lead Lithium Zhixing Beijing Technology Co ltd
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Publication of CN117578644A publication Critical patent/CN117578644A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • H02J7/00302—Overcharge protection
    • 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
    • H01M10/446—Initial charging measures
    • 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
    • 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
    • H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
    • 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
    • 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)
  • Secondary Cells (AREA)

Abstract

The invention provides a charging method of a charger, which comprises a first charging mode and a second charging mode, wherein the over-charge of a battery in the first charging mode is a first over-charge, the over-charge of the battery in the second charging mode is a second over-charge, the value of the first over-charge is X, X is positive, the value of the second over-charge is Y, Y is positive, zero or negative, and X > Y, the charging method is switched between the first charging mode and the second charging mode, and the charging method is characterized by further comprising the steps of charging the battery in the second charging mode for a certain number of times, acquiring the rest voltage of the battery after the charging is completed, and switching the charger from the second charging mode to the first charging mode for a certain number of times when the acquired difference of the rest voltages is larger than a set value. The invention also provides a charger. The charger and the charging method can realize that the battery can reduce water loss and avoid vulcanization.

Description

Charger and charging method thereof
Technical Field
The invention relates to the field of battery charging.
Background
In the current lead-acid battery charging process, three-stage charging is usually used, namely an initial fast charging stage, an intermediate slow charging stage and a later equalizing charging stage. In order to reduce the problem of water loss caused by charging, it is generally not preferable to charge the battery with excessive electric power, but not with excessive electric power, which may lead to a problem of vulcanization, so that the applicant switches between different charging modes, that is, between overcharge and insufficient charge, in international application PCT/CN2021/076571 in 2021, to balance the above problem, but how to accurately and reasonably switch between the overcharge and the insufficient charge is still a problem to be solved.
Disclosure of Invention
In order to solve the above-mentioned technical problems, the present invention provides a charging method of a charger, the charging method including a first charging mode and a second charging mode, the overcharge amount of the battery charged in the first charging mode is a first overcharge amount, the overcharge amount of the battery charged in the second charging mode is a second overcharge amount, the value of the first overcharge amount is X, X is a positive number, the value of the second overcharge amount is Y, Y is a positive number, zero or negative number, and X > Y, the charger switches between the first charging mode and the second charging mode, the charging method further includes a step of charging the battery in the second charging mode for a certain number of times, obtaining a rest voltage of the battery after the charging is completed, and when a difference between the obtained rest voltages is greater than a set value, the charger switches from the second charging mode to the first charging mode for a certain number of times.
Further, the difference between the rest voltages is the difference between the rest voltages after the end of the adjacent two charges.
Further, the difference between the rest voltages is larger than a set value, and the difference between the rest voltages is larger than the set value for a certain number of times.
Further, the first charging mode performs charging a certain number of times in proportion to the difference in the rest voltage.
The invention also provides a charger, which comprises a first charging mode unit, a second charging mode unit and a control unit, wherein the over-charge of the battery charged by the first charging mode unit is a first over-charge, the over-charge of the battery charged by the second charging mode unit is a second over-charge, the value of the first over-charge is X, X is positive, the value of the second over-charge is Y, Y is positive, zero or negative, and X > Y, the control unit controls the charger to switch charging between the first charging mode and the second charging mode, the charger further comprises a battery rest voltage acquisition unit, the battery rest voltage acquisition unit is used for acquiring the rest voltage of the battery when the battery is charged in the second charging mode, and the control unit is further used for controlling the charger to switch from the second charging mode to the first charging mode for charging a certain number of times according to the difference of the rest voltages being larger than a set value.
Further, the difference between the rest voltages is the difference between the rest voltages after the end of the adjacent two charges.
Further, the difference between the rest voltages is larger than a set value, and the difference between the rest voltages is larger than the set value for a certain number of times.
Further, the first charging mode performs charging a certain number of times in proportion to the difference in the rest voltage.
The invention also protects a method for judging the vulcanization of the lead-acid battery, wherein the charger acquires the standing voltage after the battery is charged, and when the acquired difference of the standing voltages is larger than a set value, the charger judges the vulcanization of the battery.
Further, the difference between the rest voltages is the difference between the rest voltages after the completion of the adjacent two charges.
The invention also provides a charging method of the charger, the charging method comprises a first charging mode and a second charging mode, the overcharging amount of the battery charged in the first charging mode is a first overcharging amount, the overcharging amount of the battery charged in the second charging mode is a second overcharging amount, the value of the first overcharging amount is X, X is positive number, the value of the second overcharging amount is Y, Y is positive number, zero or negative number, and X > Y, the charger is switched between the first charging mode and the second charging mode, and the charging method is characterized by further comprising the steps of acquiring the charging times of the battery, and determining a switching rule between the first charging mode and the second charging mode according to the acquired charging times of the battery.
Further, when the acquired charging times of the battery are in a capacity rising stage of the starting charging times, switching between the first charging mode and the second charging mode is performed according to a switching rule of the capacity rising stage of the starting charging times; when the obtained charging times of the battery are in a slow capacity reduction stage of the intermediate charging times, switching between a first charging mode and a second charging mode according to a switching rule of the slow capacity reduction stage of the intermediate charging times; and when the obtained charging times of the battery are in the capacity rapid reduction stage of the last charging times, switching between the first charging mode and the second charging mode according to the switching rule of the capacity rapid reduction stage of the last charging times.
Further, the switching rule of the capacity slow-down stage of the intermediate charging times is to charge the battery for a certain number of times in the second charging mode, and the step of obtaining the rest voltage of the battery after the charging is completed, when the obtained difference between the rest voltages is larger than a set value, the charger switches from the second charging mode to the first charging mode for a certain number of times.
The invention also provides a charger, which comprises a first charging mode unit, a second charging mode unit and a control unit, wherein the over-charge of the battery charged by the first charging mode unit is a first over-charge, the over-charge of the battery charged by the second charging mode unit is a second over-charge, the value of the first over-charge is X, X is a positive number, the value of the second over-charge is Y, Y is a positive number, zero or a negative number, and X > Y, and the control unit controls the charger to switch charging between the first charging mode and the second charging mode.
Further, when the acquired charging times of the battery are in a capacity rising stage of the starting charging times, the control unit switches between the first charging mode and the second charging mode according to a switching rule of the capacity rising stage of the starting charging times; when the obtained charging times of the battery are in the capacity slow-down stage of the intermediate charging times, the control unit switches between the first charging mode and the second charging mode according to the switching rule of the capacity slow-down stage of the intermediate charging times; when the obtained charging times of the battery are in the capacity rapid-reduction stage of the last charging times, the control unit switches between the first charging mode and the second charging mode according to the switching rule of the capacity rapid-reduction stage of the last charging times.
Further, the battery charging control device further comprises a battery rest voltage acquisition unit, the control unit is used for switching between the first charging mode and the second charging mode according to a switching rule of a capacity slow-down stage of the intermediate charging times, the battery rest voltage acquisition unit is used for acquiring the rest voltage of the battery when the battery is charged in the second charging mode, and the control unit is further used for controlling the charger to switch from the second charging mode to the first charging mode for charging for a certain number of times according to the difference of the rest voltages being larger than a set value.
The charger and the charging method thereof can realize that the battery can reduce water loss and avoid vulcanization.
Detailed Description
The invention is further described below in connection with specific embodiments.
The charger comprises a first charging mode unit, a second charging mode unit, a battery standing voltage acquisition unit and a control unit, wherein the charging quantity of the first charging mode unit for charging the battery is a first charging quantity, the charging quantity of the second charging mode unit for charging the battery is a second charging quantity, the value of the first charging quantity is X, the value of the second charging quantity is Y, the value of the second charging quantity is positive, zero or negative, and X > Y, the first charging mode is an overcharging mode, when Y is positive, the second charging mode is also an overcharging mode, when Y is zero or negative, the second charging mode is a non-overcharging mode, when Y is negative, the second charging mode is a non-fully charged mode, when Y is zero, the second charging mode is a fully charged mode, and the control unit controls the charger to switch charging between the first charging mode and the second charging mode. The battery rest voltage obtaining unit is used for obtaining the rest voltage when the battery is charged, preferably obtaining the rest voltage when the battery is charged in the second charging mode, wherein the difference between the rest voltages is preferably the difference between the rest voltages when the battery is charged in the second charging mode and the adjacent battery is charged in the adjacent battery, and the control unit is further used for improving the accuracy when the difference between the rest voltages is larger than a set value, preferably a certain number of times continuously and larger than the set value, controlling the charger to switch to the first charging mode for charging a certain number of times, and when the charger is controlled to switch to the first charging mode for charging a certain number of times, switching to the second charging mode for charging, and obtaining the rest voltage difference again to repeat the steps. Such as: the charger charges with the second charging mode unit for 4 times continuously, the rest voltage U1 of the battery at the end of the first charging, the rest voltage U2 of the battery at the end of the second charging, the rest voltage U3 of the battery at the end of the third charging and the rest voltage U4 of the battery at the end of the fourth charging are respectively as follows: U1-U2, U2-U3, U3-U4, when the difference of voltage is greater than the value K millivolts of standing still for 3 times in succession, namely U1-U2> K millivolts, U2-U3> K millivolts, U3-U4> K millivolts, K is set up to 50 preferably, control the charger to switch to the first charging mode and charge for a certain number of times, this moment first charging mode is used for eliminating the vulcanization, the certain number of times that first charging mode charges can be set up according to the degree of vulcanization, namely as the difference of voltage of standing still is greater, the number of times that first charging mode charges is greater, namely the number of times that switches to first charging mode charges is proportional to the difference of voltage of standing still, after the first charging mode charges for a certain number of times, after eliminating the vulcanization, can switch to the second charging mode again and charge.
The charging method of the charger comprises a first charging mode and a second charging mode, wherein the charging quantity of the battery is the first charging quantity in the first charging mode, the charging quantity of the battery is the second charging quantity in the second charging mode, the value of the first charging quantity is X, the value of X is positive, the value of the second charging quantity is Y, the value of Y is positive, zero or negative, and X > Y, the first charging mode is the charging mode, the second charging mode is the charging mode when Y is positive, the second charging mode is the charging mode when Y is negative, the second charging mode is the charging mode when Y is non-charging mode, the second charging mode is the charging mode when Y is negative, the second charging mode is the charging mode when Y is zero, the charging is switched between the first charging mode and the second charging mode through a control unit, the charging of the battery is carried out in the second charging mode for a certain number of times, the step of obtaining the voltage of the battery after the charging is completed, the obtained voltage difference is larger than the value of the difference between the obtained voltage and the first rest mode and the second rest mode is switched from the first rest mode to the second rest mode when the obtained voltage difference is the rest mode and the rest mode is the rest mode. When the difference between the rest voltages is larger than the set value, it is preferable that the charger switches from the second charging mode to the first charging mode to charge for a predetermined number of times when the difference between the rest voltages is larger than the set value. After the charger is switched from the second charging mode to the first charging mode for charging for a certain number of times, the charger can be switched to the second charging mode for charging, and then the rest voltage difference is acquired to repeat the steps.
The whole life cycle of the lead-acid storage battery comprises a capacity rising stage of starting charging times, such as starting charging times of 0-50 times of charging, and a capacity slowly-falling stage of intermediate charging times, such as: the intermediate charge times are 50-300 times, and the capacity of the final charge times is rapidly reduced, such as: the charging method of the charger is preferably applied to a stage of slowly decreasing the capacity of the intermediate charging times of the lead-acid storage battery, namely, the charger can acquire the charging times of the battery, when the charging times are in the stage of slowly decreasing the capacity, the charging method of the charger is used for switching between a first charging mode and a second charging mode, and the charging times of the battery are started in the stage of increasing the capacity of the charging times and the stage of rapidly decreasing the capacity of the final charging times, and the charger can acquire the charging times of the battery. That is, the charger and the charging method of the present invention may determine the switching rule between the first charging mode and the second charging mode according to the acquired number of times of charging the battery. When the acquired charging times of the battery are in a capacity rising stage of the starting charging times, switching between a first charging mode and a second charging mode according to a switching rule of the capacity rising stage of the starting charging times; when the obtained charging times of the battery are in a slow capacity reduction stage of the intermediate charging times, switching between a first charging mode and a second charging mode according to a switching rule of the slow capacity reduction stage of the intermediate charging times; and when the obtained charging times of the battery are in the capacity rapid reduction stage of the last charging times, switching between the first charging mode and the second charging mode according to the switching rule of the capacity rapid reduction stage of the last charging times. The charger further comprises a battery charging frequency acquisition unit, wherein the control unit determines a switching rule between the first charging mode and the second charging mode according to the battery charging frequency acquired by the acquisition unit, and when the acquired battery charging frequency is in a capacity rising stage of starting charging frequency, the control unit switches between the first charging mode and the second charging mode according to the switching rule of the capacity rising stage of starting charging frequency; when the obtained charging times of the battery are in the capacity slow-down stage of the intermediate charging times, the control unit switches between the first charging mode and the second charging mode according to the switching rule of the capacity slow-down stage of the intermediate charging times; when the obtained charging times of the battery are in the capacity rapid-reduction stage of the last charging times, the control unit switches between the first charging mode and the second charging mode according to the switching rule of the capacity rapid-reduction stage of the last charging times. The control unit is used for switching between a first charging mode and a second charging mode according to a switching rule of a capacity slow-down stage of the intermediate charging times, the battery standing voltage obtaining unit is used for obtaining the standing voltage of the battery when the battery is charged in the second charging mode, and the control unit is also used for controlling the charger to switch from the second charging mode to the first charging mode for charging for a certain times when the difference of the standing voltages is larger than a set value. The charging switching rules of the first charging mode and the second charging mode in different stages are preferably different in the capacity rising stage of the initial charging times, the capacity slow falling stage of the intermediate charging times and the capacity fast falling stage of the final charging times of the battery, so that the balance and coordination of the capacity and the service life of the whole life cycle of the lead-acid storage battery can be better realized. In addition, the switching rule between the first charging mode and the second charging mode in the capacity increasing stage of the initial charging frequency can be used for charging according to the rule that the number of times of the first charging mode is greater than that of the second charging mode, and the switching rule in the capacity increasing stage of the initial charging frequency is preferably used for charging according to the switching rule that the charging is carried out in the first charging mode, that is, the number of times of switching to the second charging mode is 0, so that the problem that a single battery is behind due to the difference of saturation degrees when the battery is initially used is more advantageously avoided.
The invention also discloses a method for judging the vulcanization of the lead-acid battery, wherein the charger acquires the standing voltage after the battery is charged, and when the difference between the acquired standing voltages is larger than a set value, the charger judges the vulcanization of the battery. Also, the difference in rest voltage is preferably the difference in rest voltage after the completion of the adjacent two charges.
The charger and the charging method are applied to the lead-acid storage battery.
The charger and the charging method can realize the reduction of water loss of the battery and timely solve the problem of vulcanization, and realize coordination and unification of vulcanization and water loss reduction.
The above-described embodiment is only a preferred embodiment of the present invention, and is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.

Claims (20)

1. A charging method of a charger, the charging method comprising a first charging mode and a second charging mode, wherein an overcharge amount of a battery charged in the first charging mode is a first overcharge amount, an overcharge amount of a battery charged in the second charging mode is a second overcharge amount, a value of the first overcharge amount is X, X is a positive number, a value of the second overcharge amount is Y, Y is a positive number, zero or a negative number, and X > Y, the charger being switched between the first charging mode and the second charging mode, characterized in that the charging method further comprises a step of charging the battery in the second charging mode for a certain number of times, acquiring a rest voltage of the battery after the charging is completed, and switching from the second charging mode to the first charging mode for charging for a certain number of times when a difference between the acquired rest voltages is larger than a set value.
2. The charging method of claim 1, wherein the difference between the rest voltages is a difference between rest voltages after the end of the adjacent two charges.
3. A charging method of a charger according to claim 1 or 2, wherein the difference between the rest voltages is larger than a set value, and the difference between the rest voltages is larger than the set value a certain number of times in succession.
4. A charging method of a charger according to claim 3, wherein said first charging mode is charged a number of times in proportion to a difference between said rest voltages.
5. A charger comprising a first charging mode unit, a second charging mode unit and a control unit, wherein the charging amount of the battery charged by the first charging mode unit is a first charging amount, the charging amount of the battery charged by the second charging mode unit is a second charging amount, the first charging amount has a value of X, X is a positive number, the second charging amount has a value of Y, Y is a positive number, zero or a negative number, and X > Y, the control unit controls the charger to switch charging between the first charging mode and the second charging mode, the charger is characterized by further comprising a battery rest voltage acquisition unit for acquiring a rest voltage when the battery is charged in the second charging mode, and the control unit is further used for controlling the charger to switch from the second charging mode to the first charging mode for charging a certain number of times according to a difference between the rest voltages being larger than a set value.
6. A charger according to claim 5, wherein the difference between the rest voltages is the difference between the rest voltages after the end of the adjacent two charges.
7. A charger according to claim 5, wherein said difference in rest voltages is greater than a set value, and said difference in rest voltages is greater than a set value a predetermined number of times in succession.
8. A charger according to any one of claims 5 to 7, wherein said first charging mode is charged a number of times proportional to the difference between said rest voltages.
9. A method for judging vulcanization of a lead-acid battery is characterized in that a charger acquires standing voltage after the battery is charged, and when the acquired difference between the standing voltages is larger than a set value, the charger judges vulcanization of the battery.
10. The method of claim 9, wherein the difference between the rest voltages is a difference between rest voltages after the completion of the adjacent two charges.
11. A charging method of a charger, the charging method comprising a first charging mode and a second charging mode, an overcharge amount of charging a battery in the first charging mode is a first overcharge amount, an overcharge amount of charging the battery in the second charging mode is a second overcharge amount, a value of the first overcharge amount is X, X is a positive number, a value of the second overcharge amount is Y, Y is a positive number, zero or a negative number, and X > Y, the charger being switched between the first charging mode and the second charging mode, characterized in that the charging method further comprises acquiring a charge number of the battery, and determining a switching rule between the first charging mode and the second charging mode according to the acquired charge number of the battery.
12. The charging method of a charger according to claim 11, wherein when the acquired number of times of charging of the battery is in a capacity-increasing stage of starting the number of times of charging, switching between the first charging mode and the second charging mode is performed in accordance with a switching rule of the capacity-increasing stage of starting the number of times of charging; when the obtained charging times of the battery are in a slow capacity reduction stage of the intermediate charging times, switching between a first charging mode and a second charging mode according to a switching rule of the slow capacity reduction stage of the intermediate charging times; and when the obtained charging times of the battery are in the capacity rapid reduction stage of the last charging times, switching between the first charging mode and the second charging mode according to the switching rule of the capacity rapid reduction stage of the last charging times.
13. The charging method of claim 12, wherein the switching rule of the capacity slowly decreasing stage of the intermediate charging frequency is a step of charging the battery in the second charging mode for a certain number of times, obtaining a rest voltage of the battery after the charging is completed, and switching the charger from the second charging mode to the first charging mode for charging for a certain number of times when the obtained difference between the rest voltages is larger than a set value.
14. The charging method of a charger according to claim 11, wherein when the acquired number of times of charging of the battery is in a capacity-increasing stage of starting the number of times of charging, the switching rule performs charging in accordance with a rule that the number of times of the first charging mode is greater than the number of times of the second charging mode.
15. The charging method of claim 14, wherein the switching rules are charging according to switching rules that all charge in the first charging mode.
16. The charger comprises a first charging mode unit, a second charging mode unit and a control unit, wherein the charging quantity of a battery charged by the first charging mode unit is a first charging quantity, the charging quantity of a battery charged by the second charging mode unit is a second charging quantity, the value of the first charging quantity is X, X is a positive number, the value of the second charging quantity is Y, Y is a positive number, zero or a negative number, and X > Y, and the control unit controls the charger to switch charging between the first charging mode and the second charging mode.
17. The charger of claim 16 wherein the control unit switches between the first charging mode and the second charging mode in accordance with a switching rule for a capacity-up phase of the start charging times when the acquired charging times of the battery are in the capacity-up phase of the start charging times; when the obtained charging times of the battery are in the capacity slow-down stage of the intermediate charging times, the control unit switches between the first charging mode and the second charging mode according to the switching rule of the capacity slow-down stage of the intermediate charging times; when the obtained charging times of the battery are in the capacity rapid-reduction stage of the last charging times, the control unit switches between the first charging mode and the second charging mode according to the switching rule of the capacity rapid-reduction stage of the last charging times.
18. The charger of claim 17 further comprising a battery rest voltage acquisition unit, wherein the control unit switches between the first charging mode and the second charging mode in accordance with a switching rule of a capacity slowly decreasing phase of the intermediate charging times, the battery rest voltage acquisition unit being configured to acquire a rest voltage at the end of charging the battery in the second charging mode, the control unit being further configured to control the charger to switch from the second charging mode to the first charging mode for charging a certain number of times, when a difference between the rest voltages is greater than a set value.
19. The charger of claim 16 wherein the control unit charges according to a switching rule that the number of times of the first charging mode is greater than the number of times of the second charging mode when the acquired number of times of charging the battery is in the capacity-increasing phase of the start number of times of charging.
20. A charger according to claim 19, wherein the control unit charges according to a switching rule that is all of the first charging mode charging.
CN202311326189.9A 2023-08-24 2023-10-13 Charger and charging method thereof Pending CN117578644A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2023110701454 2023-08-24
CN202311070145 2023-08-24

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CN117578644A true CN117578644A (en) 2024-02-20

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