CN109586367A - A kind of charging method for ferric phosphate lithium cell - Google Patents
A kind of charging method for ferric phosphate lithium cell Download PDFInfo
- Publication number
- CN109586367A CN109586367A CN201811466457.6A CN201811466457A CN109586367A CN 109586367 A CN109586367 A CN 109586367A CN 201811466457 A CN201811466457 A CN 201811466457A CN 109586367 A CN109586367 A CN 109586367A
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- Prior art keywords
- voltage
- lithium cell
- ferric phosphate
- charging
- phosphate lithium
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000005955 Ferric phosphate Substances 0.000 title claims abstract description 65
- 229940032958 ferric phosphate Drugs 0.000 title claims abstract description 65
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 title claims abstract description 65
- 229910000399 iron(III) phosphate Inorganic materials 0.000 title claims abstract description 65
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 65
- 238000007600 charging Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000010280 constant potential charging Methods 0.000 claims abstract description 22
- 238000010277 constant-current charging Methods 0.000 claims abstract description 13
- 239000000178 monomer Substances 0.000 claims description 16
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000007726 management method Methods 0.000 description 4
- 229910052493 LiFePO4 Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
-
- 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
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of charging methods for ferric phosphate lithium cell, including setting pre-charging stage, constant-current charging phase, the first constant voltage charging phase, equalizaing charge stage and the second constant voltage charging phase；Detect the state of each single battery in ferric phosphate lithium cell respectively in each charging stage, and according to the state of each single battery detected, the charging of ferric phosphate lithium cell is sequentially carried out using charger in pre-charging stage, constant-current charging phase, the first constant voltage charging phase, equalizaing charge stage and the second constant voltage charging phase.The present invention can overcome short -board effect and process variations of the ferric phosphate lithium cell when being used in series in groups, effectively extend the service life of ferric phosphate lithium cell, have biggish practical value.
Description
Technical field
The invention belongs to technical field of new energy application, and in particular to a kind of charging method for ferric phosphate lithium cell.
Background technique
With the fast development of lithium-ions battery, after performance reaches the single battery series connection in groups of requirement, due to
Lacking effective management, battery pack safety declines to a great extent, and service life substantially shortens, or even cells burst, explosion occurs etc.
Serious accident, this promotes people to further investigate and study the charging management method of Li-ion batteries piles.In order to ensure phosphorus
The management of sour lithium iron battery life cycle management, increases the activity of battery, and charging process is avoided big impact occur, integrally raw at it
It orders in periodic process, selects suitable charge mode particularly important.
Summary of the invention
In view of the above-mentioned problems, the present invention proposes a kind of charging method for ferric phosphate lithium cell, ferric phosphate can be overcome
Short -board effect and process variations of the lithium battery when being used in series in groups effectively extend the service life of ferric phosphate lithium cell,
With biggish practical value.
It realizes above-mentioned technical purpose, reaches above-mentioned technical effect, the invention is realized by the following technical scheme:
A kind of charging method for ferric phosphate lithium cell, comprising:
Five charging stages being sequentially arranged are set, and five charging stages are respectively pre-charging stage, constant-current charge
Stage, the first constant voltage charging phase, equalizaing charge stage and the second constant voltage charging phase；
In pre-charging stage, the state of each single battery in the ferric phosphate lithium cell is detected, if ferric phosphate lithium cell
In at least one single battery voltage be lower than pre-charge voltage threshold value, then using charger to the ferric phosphate lithium cell
Be pre-charged, until by all single batteries lower than pre-charge voltage threshold value be charged to pre-charge voltage threshold value the above are
Only；
It in constant-current charging phase, is charged using charger to ferric phosphate lithium cell with electric current constant current, is set until being charged to
Until fixed constant pressure value；
In the first constant voltage charging phase, charged using charger to ferric phosphate lithium cell with first voltage constant pressure, directly
Until the first constant pressure value for being charged to setting；
In the equalizaing charge stage, judge whether single battery ceiling voltage surpasses with minimum voltage difference in ferric phosphate lithium cell
Balanced threshold pressure differential is crossed, carries out energy transfer formula equalizaing charge if being more than, until the voltage difference control of each single battery exists
Within the scope of balanced threshold pressure differential；
In the second constant voltage charging phase, charged using charger to ferric phosphate lithium cell with second voltage constant pressure, directly
Until the second constant pressure value for being charged to setting.
As a further improvement of the present invention, the pre-charge voltage threshold value is 3.2V.
As a further improvement of the present invention, in constant-current charging phase, further includes:
It is more than protection upper limit value when having monomer battery voltage, then charger can terminate constant-current charge, and skip first
Constant voltage charging phase enters the equalizaing charge stage in advance.
As a further improvement of the present invention, described in constant-current charging phase, using charger to ferric phosphate lithium cell with
Electric current constant current is charged, until being charged to the constant pressure value of setting, specifically:
It in constant-current charging phase, is charged using charger to ferric phosphate lithium cell with 17.6A electric current constant current, until filling
Until monomer battery voltage is 3.5V.
As a further improvement of the present invention, described that ferric phosphate lithium cell is carried out with first voltage constant pressure using charger
Charging, until being charged to the first constant pressure value of setting, specifically:
It is charged using charger to ferric phosphate lithium cell with first voltage constant pressure, until each monomer battery voltage is
Until 3.65V.
As a further improvement of the present invention, in the first constant voltage charging phase, charging current gradually subtracts according to Maas rule
Small, when being decreased to 1.5A, default charging enters the floating charge stage, then stops constant-voltage charge at this time, charges into the equalizaing charge stage；
If having monomer battery voltage is more than charge protection upper limit value, then charger can terminate constant-voltage charge in this stage, enter in advance equal
It weighs the charging stage.
As a further improvement of the present invention, the balanced threshold pressure differential is 20mA；The energy transfer formula equalizaing charge
To go to the energy in the high single battery of voltage in the low single battery of voltage, until the voltage difference of each single battery
Control is within the scope of balanced threshold pressure differential.
As a further improvement of the present invention, ferric phosphate lithium cell is filled with second voltage constant pressure using charger
Electricity, until being charged to the second constant pressure value of setting, specifically:
It is charged using charger to ferric phosphate lithium cell with second voltage constant pressure, until each monomer battery voltage is
Until 3.75V.
As a further improvement of the present invention, in the second constant voltage charging phase, charging current gradually subtracts according to Maas rule
Small, when being decreased to 1.5A, default charging enters the floating charge stage, then stops charging at this time, and entire charging process terminates；If herein
In the stage, having monomer battery voltage is more than protection upper limit value, then terminates constant-voltage charge, be again introduced into the equalizaing charge stage, until each
The voltage difference of a single battery controls within the scope of balanced threshold pressure differential, finally again with second voltage constant pressure to ferric phosphate lithium cell
Constant-voltage charge is carried out, until being full of ferric phosphate lithium cell.
As a further improvement of the present invention, the charge protection upper limit value is 3.75V.
Compared with prior art, beneficial effects of the present invention:
The present invention proposes a kind of charging method for ferric phosphate lithium cell, and ferric phosphate lithium cell can be overcome to go here and there in groups
Short -board effect and process variations when connection uses effectively extend the service life of ferric phosphate lithium cell, have biggish practical
Value.
Detailed description of the invention
Fig. 1 is the charging stage schematic diagram of an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, the invention proposes a kind of charging methods for ferric phosphate lithium cell, comprising the following steps:
(1) five charging stages being sequentially arranged are set, and five charging stages are respectively that pre-charging stage, constant current are filled
Electric stage, the first constant voltage charging phase, equalizaing charge stage and the second constant voltage charging phase；
(2) in pre-charging stage, the state of each single battery in the ferric phosphate lithium cell is detected, if LiFePO4 is electric
The voltage of at least one single battery is lower than pre-charge voltage threshold value in pond, then using charger to the LiFePO4 electricity
Pond is pre-charged, until all single batteries lower than pre-charge voltage threshold value are charged to pre-charge voltage threshold value or more
Until；In a preferred embodiment of the invention, the pre-charge voltage threshold value is 3.2V；Pre-charging stage is mainly for there is list
Body battery carries out the process of low current energy supplement due to over-discharge leads to under-voltage to it, and the pre-charge pressure threshold value master of 3.2V is arranged
If in order to verify " precharge " this process；
(3) it in constant-current charging phase, is charged using charger to ferric phosphate lithium cell with electric current constant current, until being charged to
Until the constant pressure value of setting；In a preferred embodiment of the invention, specifically: in constant-current charging phase, using charger to phosphorus
Sour lithium iron battery is charged with 17.6A electric current constant current, until being charged to monomer battery voltage and being 3.5V；
Further, in a preferred embodiment of the invention, in constant-current charging phase, further includes:
It is more than protection upper limit value when having monomer battery voltage, then charger can terminate constant-current charge, and skip first
Constant voltage charging phase enters the equalizaing charge stage in advance.The protection upper limit value is 3.75V；
(4) it in the first constant voltage charging phase, is charged using charger to ferric phosphate lithium cell with first voltage constant pressure,
Until being charged to the first constant pressure value of setting；In a specific embodiment of the invention, specifically:
It is charged using charger to ferric phosphate lithium cell with first voltage constant pressure, until each monomer battery voltage is
Until 3.65V.
Further, in a preferred embodiment of the invention, in the first constant voltage charging phase, further includes:
Charging current is gradually reduced according to Maas rule, and when being decreased to 1.5A, default charging enters the floating charge stage, then at this time
Stop constant-voltage charge, charges into the equalizaing charge stage；If having monomer battery voltage is more than the charge protection upper limit in this stage
Value, then charger can terminate constant-voltage charge, enter the equalizaing charge stage in advance；The charge protection upper limit value is 3.75V；
(5) in the equalizaing charge stage, judge in ferric phosphate lithium cell that single battery ceiling voltage is with minimum voltage difference
No is more than balanced threshold pressure differential, carries out energy transfer formula equalizaing charge if being more than, until the voltage difference control of each single battery
System is within the scope of balanced threshold pressure differential；Preferably, the balanced threshold pressure differential is 20mA；The energy transfer formula equalizaing charge is
Energy in the high single battery of voltage is gone in the low single battery of voltage, until the voltage difference control of each single battery
System is within the scope of balanced threshold pressure differential, wherein the process of the energy transfer formula equalizaing charge is the prior art, therefore, this Shen
Please in do not do excessive repeat；
(6) it in the second constant voltage charging phase, is charged using charger to ferric phosphate lithium cell with second voltage constant pressure,
Until being charged to the second constant pressure value of setting, in a specific embodiment of the invention, specifically:
It is charged using charger to ferric phosphate lithium cell with second voltage constant pressure, until each monomer battery voltage is
Until 3.75V.
Further, in the second constant voltage charging phase, charging current is gradually reduced according to Maas rule, when being decreased to 1.5A
When, default charging enters the floating charge stage, then stops charging at this time, and entire charging process terminates；If having single battery in this stage
Voltage is more than protection upper limit value, then terminates constant-voltage charge, be again introduced into the equalizaing charge stage, until the voltage of each single battery
Difference control finally carries out constant-voltage charge to ferric phosphate lithium cell with second voltage constant pressure again, directly within the scope of balanced threshold pressure differential
Until ferric phosphate lithium cell is full of；The charge protection upper limit value is 3.75V.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of charging method for ferric phosphate lithium cell characterized by comprising
Five charging stages being sequentially arranged are set, five charging stages be respectively pre-charging stage, constant-current charging phase,
First constant voltage charging phase, equalizaing charge stage and the second constant voltage charging phase；
In pre-charging stage, the state of each single battery in the ferric phosphate lithium cell is detected, if in ferric phosphate lithium cell extremely
The voltage of a rare single battery is lower than pre-charge voltage threshold value, then is carried out using charger to the ferric phosphate lithium cell
Precharge, until all single batteries lower than pre-charge voltage threshold value are charged to pre-charge voltage threshold value or more；
It in constant-current charging phase, is charged using charger to ferric phosphate lithium cell with electric current constant current, until being charged to setting
Until constant pressure value；
It in the first constant voltage charging phase, is charged using charger to ferric phosphate lithium cell with first voltage constant pressure, until filling
Until the first constant pressure value of setting；
In the equalizaing charge stage, judge whether single battery ceiling voltage and minimum voltage difference are more than equal in ferric phosphate lithium cell
Weigh threshold pressure differential, carries out energy transfer formula equalizaing charge if being more than, until the voltage difference of each single battery is controlled in equilibrium
Within the scope of threshold pressure differential；
It in the second constant voltage charging phase, is charged using charger to ferric phosphate lithium cell with second voltage constant pressure, until filling
Until the second constant pressure value of setting.
2. a kind of charging method for ferric phosphate lithium cell according to claim 1, it is characterised in that: the precharge
Voltage threshold value is 3.2V.
3. a kind of charging method for ferric phosphate lithium cell according to claim 1, it is characterised in that: in constant-current charge
Stage, further includes:
It is more than protection upper limit value when having monomer battery voltage, then charger can terminate constant-current charge, and skip the first constant pressure
Charging stage enters the equalizaing charge stage in advance.
4. a kind of charging method for ferric phosphate lithium cell according to claim 3, it is characterised in that: described in constant current
Charging stage is charged to ferric phosphate lithium cell with electric current constant current using charger, until being charged to the constant pressure value of setting,
Specifically:
It in constant-current charging phase, is charged using charger to ferric phosphate lithium cell with 17.6A electric current constant current, until being charged to list
Until body cell voltage is 3.5V.
5. a kind of charging method for ferric phosphate lithium cell according to claim 1, it is characterised in that: utilize charger
It is charged to ferric phosphate lithium cell with first voltage constant pressure, until being charged to the first constant pressure value of setting, specifically: it utilizes
Charger charges to ferric phosphate lithium cell with first voltage constant pressure, until each monomer battery voltage is 3.65V.
6. a kind of charging method for ferric phosphate lithium cell according to claim 5, it is characterised in that: in the first constant pressure
Charging stage, charging current are gradually reduced according to Maas rule, and when being decreased to 1.5A, default charging enters the floating charge stage, then this
When stop constant-voltage charge, into the equalizaing charge stage charge；If having monomer battery voltage is more than the charge protection upper limit in this stage
Value, then charger can terminate constant-voltage charge, enter the equalizaing charge stage in advance.
7. a kind of charging method for ferric phosphate lithium cell according to claim 1, it is characterised in that: the balanced pressure
Poor threshold value is 20mA；The energy transfer formula equalizaing charge is that the energy in the high single battery of voltage is gone to the low list of voltage
In body battery, until the voltage difference of each single battery controls within the scope of balanced threshold pressure differential.
8. a kind of charging method for ferric phosphate lithium cell according to claim 1, it is characterised in that: utilize charger
It is charged to ferric phosphate lithium cell with second voltage constant pressure, until being charged to the second constant pressure value of setting, specifically: it utilizes
Charger charges to ferric phosphate lithium cell with second voltage constant pressure, until each monomer battery voltage is 3.75V.
9. a kind of charging method for ferric phosphate lithium cell according to claim 8, it is characterised in that: in the second constant pressure
Charging stage, charging current are gradually reduced according to Maas rule, and when being decreased to 1.5A, default charging enters the floating charge stage, then
Stop charging at this time, entire charging process terminates；If having monomer battery voltage is more than protection upper limit value in this stage, then terminate
Constant-voltage charge is again introduced into the equalizaing charge stage, until the voltage difference of each single battery is controlled in balanced threshold pressure differential range
It is interior, constant-voltage charge is finally carried out to ferric phosphate lithium cell with second voltage constant pressure again, until being full of ferric phosphate lithium cell.
10. a kind of charging method for ferric phosphate lithium cell according to any one of claim 4,6 or 9, feature
Be: the charge protection upper limit value is 3.75V.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811466457.6A CN109586367A (en) | 2018-12-03 | 2018-12-03 | A kind of charging method for ferric phosphate lithium cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811466457.6A CN109586367A (en) | 2018-12-03 | 2018-12-03 | A kind of charging method for ferric phosphate lithium cell |
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ID=65926967
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106404A (en) * | 2019-11-29 | 2020-05-05 | 合肥国轩高科动力能源有限公司 | An optimization method for floating charge of lithium iron phosphate battery |
| CN111301225A (en) * | 2019-12-05 | 2020-06-19 | 常州机电职业技术学院 | Universal equalizing charging system and universal equalizing charging method |
| CN111766525A (en) * | 2020-06-02 | 2020-10-13 | 深圳市瑞能达科技有限公司 | Method for measuring charge capacity of lithium iron phosphate battery and charging method |
| CN111817397A (en) * | 2020-07-21 | 2020-10-23 | 闵紫辰 | Overcharge prevention control method and device and storage medium |
| CN113489082A (en) * | 2021-05-31 | 2021-10-08 | 上海航天电源技术有限责任公司 | Lithium battery pack charging method and system |
| CN113904417A (en) * | 2021-11-04 | 2022-01-07 | 东莞光亚智能科技有限公司 | Constant-voltage component-capacitance system for series battery monomers and control method thereof |
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| CN1200204A (en) * | 1995-10-24 | 1998-11-25 | 松下电器产业株式会社 | Constant-current/constant-voltage battery charger |
| CN104377396A (en) * | 2014-11-07 | 2015-02-25 | 惠州市亿能电子有限公司 | Lithium battery pack charging method |
| CN105024411A (en) * | 2014-04-17 | 2015-11-04 | 中国科学院沈阳自动化研究所 | Intelligent power lithium ion battery management system and charging control method |
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| CN1200204A (en) * | 1995-10-24 | 1998-11-25 | 松下电器产业株式会社 | Constant-current/constant-voltage battery charger |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106404A (en) * | 2019-11-29 | 2020-05-05 | 合肥国轩高科动力能源有限公司 | An optimization method for floating charge of lithium iron phosphate battery |
| CN111301225A (en) * | 2019-12-05 | 2020-06-19 | 常州机电职业技术学院 | Universal equalizing charging system and universal equalizing charging method |
| CN111301225B (en) * | 2019-12-05 | 2021-02-09 | 常州机电职业技术学院 | Universal equalizing charging system and universal equalizing charging method |
| CN111766525A (en) * | 2020-06-02 | 2020-10-13 | 深圳市瑞能达科技有限公司 | Method for measuring charge capacity of lithium iron phosphate battery and charging method |
| CN111817397A (en) * | 2020-07-21 | 2020-10-23 | 闵紫辰 | Overcharge prevention control method and device and storage medium |
| CN111817397B (en) * | 2020-07-21 | 2021-06-08 | 珠海智融科技有限公司 | Overcharge prevention control method and device and storage medium |
| CN113489082A (en) * | 2021-05-31 | 2021-10-08 | 上海航天电源技术有限责任公司 | Lithium battery pack charging method and system |
| CN113904417A (en) * | 2021-11-04 | 2022-01-07 | 东莞光亚智能科技有限公司 | Constant-voltage component-capacitance system for series battery monomers and control method thereof |
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Application publication date: 20190405 |
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