CN112599876A - Regulation and control method for prolonging service life of lithium ion battery pack - Google Patents
Regulation and control method for prolonging service life of lithium ion battery pack Download PDFInfo
- Publication number
- CN112599876A CN112599876A CN202011530971.9A CN202011530971A CN112599876A CN 112599876 A CN112599876 A CN 112599876A CN 202011530971 A CN202011530971 A CN 202011530971A CN 112599876 A CN112599876 A CN 112599876A
- Authority
- CN
- China
- Prior art keywords
- voltage
- cut
- current
- charge
- charging
- Prior art date
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract description 24
- 238000007600 charging Methods 0.000 claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 238000010281 constant-current constant-voltage charging Methods 0.000 claims description 14
- 238000010277 constant-current charging Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 abstract description 2
- 238000012827 research and development Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 10
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 4
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the technical field of lithium ion batteries, in particular to a regulation and control method for prolonging the service life of a lithium ion battery pack. The method comprises the following steps: s1, carrying out capacity calibration on a battery pack to be tested; s2, determining a charging cut-off voltage according to the capacity calibration charging capacity data, wherein the discharging cut-off voltage is (2.5N) V; and S3, carrying out charge-discharge cycle life test according to the determined charge cut-off voltage and the determined discharge cut-off voltage. The invention does not need to develop the interior of the battery, can prolong the service life of the product only by regulating and controlling the voltage parameters in the using process of a mature product, and greatly reduces the research and development cost. The invention is feasible, simple and easy to understand, can be operated and executed, does not need additional investment, and can realize the purpose of prolonging the service life of the battery only by setting parameters in operating equipment.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a regulation and control method for prolonging the service life of a lithium ion battery pack.
Background
The lithium iron phosphate battery has the advantages of high energy density, low cost, long service life, high safety, environmental friendliness and the like, and is widely applied to a plurality of new energy fields such as digital electronics, communication base stations, electric motor coaches, buses and energy storage.
As for lithium ion batteries, the cycle life is an important index for evaluating the quality of the batteries, and in order to adapt to changeable market demands, industry people spend a great deal of time and experience everyday, and the cycle life of the batteries is continuously optimized and improved through material improvement, formula selection, process adjustment and the like.
In the market, most lithium ion battery packs are charged and discharged by using DOD (direction of charge) less than or equal to 80 percent in a circulating manner, and the conventional shallow charge and shallow discharge (10-90 percent SOC) battery is considered to have better circulation, so that the voltage of the battery pack is not processed, the charge cut-off voltage is 54.75V, and the discharge cut-off voltage is 37.50V.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a regulating method for prolonging the service life of a lithium ion battery pack.
The technical scheme for realizing the purpose of the invention is as follows: a regulation and control method for prolonging the service life of a lithium ion battery pack comprises the following steps:
s1, carrying out capacity calibration on the battery pack to be tested.
And S2, determining a charging cut-off voltage according to the capacity calibration charging capacity data, wherein the discharging cut-off voltage is (2.5N) V.
And S3, carrying out charge-discharge cycle life test according to the determined charge cut-off voltage and the determined discharge cut-off voltage.
Further, the S1 includes the following steps:
a. standing for 5 min.
b. Constant current discharging: discharge current I2Cut-off voltage (2.5 × N) V.
c. Standing for 30 min.
d. Constant-current constant-voltage charging: charging current I2Charge cutoff voltage (3.65 × N) V, and charge cutoff current 0.05C.
e. Standing for 30 min.
f. Constant current discharging: discharge current I2Cut-off voltage (2.5 × N) V.
Further, determination of the charge cut-off voltage: according to the d steps in the capacity calibration, the total charging capacity is Qtotal, and the voltage corresponding to the capacity when Qtotal is 80% is selected to be determined as the charging cut-off voltage V1。
Further, the charge-discharge cycle life test comprises the following steps:
1) standing for 30 min.
2) Constant current charging: charging current I2Charge cutoff voltage V1 V。
3) Standing for 30 min.
4) Constant current discharging: discharge current I2Cut-off voltage (2.5 × N) V.
5) Step 1) is started, and the circulation times are N times.
After the technical scheme is adopted, the invention has the following positive effects:
(1) the invention does not need to develop the interior of the battery, can prolong the service life of the product only by regulating and controlling the voltage parameters in the using process of a mature product, and greatly reduces the research and development cost.
(2) The invention is feasible, simple and easy to understand, can be operated and executed, does not need additional investment, and can realize the purpose of prolonging the service life of the battery only by setting parameters in operating equipment.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a graph of the cycle performance of examples (1-3);
FIG. 2 is a graph showing the cycle performance of comparative examples (1 to 3);
FIG. 3 is a graph showing the cycle performance of comparative examples (4 to 6).
Detailed Description
(examples 1 to 3)
Taking three groups of 15 strings of 4850 lithium iron phosphate battery packs as an example, when the battery state is 0% -80% SOC, the voltage regulation and control test is carried out, and the specific steps are as follows:
battery pack capacity calibration:
1) standing for 5 min; 2) constant current discharging: discharge current 50A, cut-off voltage 37.5V; 3) standing for 30 min; 4) constant-current constant-voltage charging: a charge current of 50A, a charge cut-off voltage of 54.75V, and a charge cut-off current of 2.5A; 5) standing for 30 min; 6) constant current discharging: discharge current 50A, cut-off voltage 37.5V; 7) standing for 30 min.
Battery pack charge cutoff voltage determination:
according to the total charging capacity Qtotal of the step 4) in the battery pack capacity calibration, selecting the voltage corresponding to the capacity when Qtotal is 80 percent as the charging cut-off voltage V1；
Determining a battery pack charge-discharge cycle system:
example 1:
1) standing for 30 min; 2) constant-current constant-voltage charging: a charge current of 50A, a charge cut-off voltage of 51.47V, and a charge cut-off current of 2.5A; 3) standing for 30 min; 4) constant current discharging: discharge current 50A, cut-off voltage 37.5V; 5) step 1) is initiated, and the number of cycles 1006.
Example 2:
2) standing for 30 min; 2) constant-current constant-voltage charging: a charge current of 50A, a charge cut-off voltage of 51.58V, a charge cut-off current of 2.5A; 3) standing for 30 min; 4) constant current discharging: discharge current 50A, cut-off voltage 37.5V; 5) step 1) is initiated, and the number of cycles 1006.
Example 3:
3) standing for 30 min; 2) constant-current constant-voltage charging: a charge current of 50A, a charge cut-off voltage of 51.46V, a charge cut-off current of 2.5A; 3) standing for 30 min; 4) constant current discharging: discharge current 50A, cut-off voltage 37.5V; 5) step 1) is initiated, and the number of cycles 1006.
Comparative examples 1 to 3:
taking three groups of 15 strings of 4850 lithium iron phosphate battery packs as an example, when the battery state is 20% -100% SOC, the voltage regulation and control test is carried out, and the specific steps are as follows:
battery pack capacity calibration:
1) standing for 5 min; 2) constant current discharging: discharge current 50A, cut-off voltage 37.5V; 3) standing for 30 min; 4) constant-current constant-voltage charging: a charge current of 50A, a charge cut-off voltage of 54.75V, and a charge cut-off current of 2.5A; 5) standing for 30 min; 6) constant current discharging: discharge current 50A, cut-off voltage 37.5V; 7) standing for 30 min.
Battery pack charge cutoff voltage determination:
according to the total discharge capacity Qtotal in the step 6) in the battery pack capacity calibration, selecting a voltage corresponding to the capacity when Qtotal is 80% as a charge cut-off voltage V2;
determining a battery pack charge-discharge cycle system:
comparative example 1:
1) standing for 30 min; 2) constant-current constant-voltage charging: a charge current of 50A, a charge cut-off voltage of 54.75V, and a charge cut-off current of 2.5A; 3) standing for 30 min; 4) constant current discharging: discharge current 50A, cut-off voltage 47.03V; 5) step 1) is initiated, and the number of cycles 1006.
Comparative example 2:
1) standing for 30 min; 2) constant-current constant-voltage charging: a charge current of 50A, a charge cut-off voltage of 54.75V, and a charge cut-off current of 2.5A; 3) standing for 30 min; 4) constant current discharging: discharge current 50A, cut-off voltage 46.94V; 5) step 1) is initiated, and the number of cycles 1006.
Comparative example 3:
1) standing for 30 min; 2) constant-current constant-voltage charging: a charge current of 50A, a charge cut-off voltage of 54.75V, and a charge cut-off current of 2.5A; 3) standing for 30 min; 4) constant current discharging: discharge current 50A, cut-off voltage 47.01V; 5) step 1) is initiated, and the number of cycles 1006.
Comparative examples 4 to 6:
taking three groups of 15 strings of 4850 lithium iron phosphate battery packs as an example, when the battery state is 0% -90% SOC, the voltage regulation and control test is carried out, and the specific steps are as follows:
battery pack capacity calibration:
1) standing for 5 min; 2) constant current discharging: discharge current 50A, cut-off voltage 37.5V; 3) standing for 30 min; 4) constant-current constant-voltage charging: a charge current of 50A, a charge cut-off voltage of 54.75V, and a charge cut-off current of 2.5A; 5) standing for 30 min; 6) constant current discharging: discharge current 50A, cut-off voltage 37.5V; 7) standing for 30 min.
Determining the charge and discharge cut-off voltage of the battery pack:
according to the total charging capacity Qtotal of the step 4) in the battery pack capacity calibration, selecting the voltage corresponding to the capacity when Qtotal is 90 percent as the charging cut-off voltage V2(ii) a Step 6), selecting the voltage corresponding to the total discharge capacity Qtotal of 90 percent, and determining the voltage as the discharge cut-off voltage V3；
Determining a battery pack charge-discharge cycle system:
comparative example 4:
1) standing for 30 min; 2) constant-current constant-voltage charging: a charge current of 50A, a charge cut-off voltage of 51.82V, and a charge cut-off current of 2.5A; 3) standing for 30 min; 4) constant current discharging: discharge current 50A, cut-off voltage 45.96V; 5) step 1) is initiated, and the number of cycles 1006.
Comparative example 5:
1) standing for 30 min; 2) constant-current constant-voltage charging: a charge current of 50A, a charge cut-off voltage of 51.71V, and a charge cut-off current of 2.5A; 3) standing for 30 min; 4) constant current discharging: discharge current 50A, cut-off voltage 45.98V; 5) step 1) is initiated, and the number of cycles 1006.
Comparative example 6:
1) standing for 30 min; 2) constant-current constant-voltage charging: a charge current of 50A, a charge cut-off voltage of 51.62V, and a charge cut-off current of 2.5A; 3) standing for 30 min; 4) constant current discharging: discharge current 50A, cut-off voltage 46.28V; 5) step 1) is initiated, and the number of cycles 1006.
The experimental results are as follows:
it can be known through the comparison, this technical scheme is showing the cycle life who has promoted the group battery, and it need not spend a large amount of efforts to research and develop electric core, greatly reduced the development cost of battery.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A regulation and control method for prolonging the service life of a lithium ion battery pack is characterized in that: the method comprises the following steps:
s1, carrying out capacity calibration on a battery pack to be tested;
s2, determining a charging cut-off voltage according to the capacity calibration charging capacity data, wherein the discharging cut-off voltage is (2.5N) V;
and S3, carrying out charge-discharge cycle life test according to the determined charge cut-off voltage and the determined discharge cut-off voltage.
2. The regulation and control method for prolonging the service life of a lithium ion battery pack according to claim 1, wherein the regulation and control method comprises the following steps: the S1 includes the steps of:
a. standing for 5 min;
b. constant current discharging: discharge current I2Cutoff voltage (2.5 × N) V;
c. standing for 30 min;
d. constant-current constant-voltage charging: charging current I2Charge cutoff voltage (3.65 × N) V, charge cutoff current 0.05C;
e. standing for 30 min;
f. constant current discharging: discharge current I2Cut-off voltage (2.5 × N) V.
3. The regulation and control method for prolonging the service life of a lithium ion battery pack according to claim 2, wherein the regulation and control method comprises the following steps: determination of charge cutoff voltage: according to the d steps in the capacity calibration, the total charging capacity is Qtotal, and the voltage corresponding to the capacity when Qtotal is 80% is selected to be determined as the charging cut-off voltage V1。
4. The regulation and control method for prolonging the service life of a lithium ion battery pack according to claim 1, wherein the regulation and control method comprises the following steps: the charge-discharge cycle life test comprises the following steps:
1) standing for 30 min;
2) constant current charging: charging current I2Charge cutoff voltage V1 V；
3) Standing for 30 min;
4) constant current discharging: discharge current I2Cutoff voltage (2.5 × N) V;
5) step 1) is started, and the circulation times are N times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011530971.9A CN112599876A (en) | 2020-12-22 | 2020-12-22 | Regulation and control method for prolonging service life of lithium ion battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011530971.9A CN112599876A (en) | 2020-12-22 | 2020-12-22 | Regulation and control method for prolonging service life of lithium ion battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112599876A true CN112599876A (en) | 2021-04-02 |
Family
ID=75200431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011530971.9A Pending CN112599876A (en) | 2020-12-22 | 2020-12-22 | Regulation and control method for prolonging service life of lithium ion battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112599876A (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723534A (en) * | 2011-03-31 | 2012-10-10 | 广州丰江电池新技术股份有限公司 | Rapid charging method of rechargeable batteries |
| CN103439664A (en) * | 2013-08-22 | 2013-12-11 | 安徽安凯汽车股份有限公司 | Pure electric vehicle power battery pack capacity calibration method based on current |
| CN103606716A (en) * | 2013-11-30 | 2014-02-26 | 华为技术有限公司 | Charging method and apparatus |
| CN104638311A (en) * | 2015-03-11 | 2015-05-20 | 浙江中科立德新材料有限公司 | Formation method of aqueous iron-lithium battery |
| CN104714189A (en) * | 2015-04-02 | 2015-06-17 | 奇瑞汽车股份有限公司 | Method for predicting cycle life of battery pack for electric car |
| CN105203965A (en) * | 2015-09-11 | 2015-12-30 | 国家电网公司 | Energy storage battery detection method |
| CN106597290A (en) * | 2015-12-24 | 2017-04-26 | 申勇兵 | Charging voltage test method for prolonging service life of lithium battery of emergency intelligent lamp |
| JP2018166108A (en) * | 2018-06-12 | 2018-10-25 | マクセルホールディングス株式会社 | Method for charging lithium ion secondary battery, and charge control system therefor |
| CN109061513A (en) * | 2018-09-21 | 2018-12-21 | 合肥国轩高科动力能源有限公司 | Test method for improving cycle life of lithium iron phosphate power lithium battery |
| CN109596997A (en) * | 2018-11-21 | 2019-04-09 | 湖北锂诺新能源科技有限公司 | Cycle life of lithium ion battery test method |
| CN109713387A (en) * | 2018-12-27 | 2019-05-03 | 肇庆遨优动力电池有限公司 | A method of improving lithium-rich manganese-based lithium ion battery cyclical stability |
| CN110133527A (en) * | 2019-05-08 | 2019-08-16 | 深圳市比克动力电池有限公司 | A method of capacity attenuation is analyzed based on three electrode lithium ion batteries |
| CN110165321A (en) * | 2019-07-08 | 2019-08-23 | 江苏塔菲尔新能源科技股份有限公司 | A kind of charging method of lithium ion battery |
| CN110880624A (en) * | 2019-11-29 | 2020-03-13 | 武汉瑞杰特材料有限责任公司 | Method for artificial failure of lithium ion battery |
| CN111007417A (en) * | 2019-12-06 | 2020-04-14 | 重庆大学 | Battery pack SOH and RUL prediction method and system based on inconsistency evaluation |
| WO2020223880A1 (en) * | 2019-05-06 | 2020-11-12 | Oppo广东移动通信有限公司 | Charging method and charging apparatus |
-
2020
- 2020-12-22 CN CN202011530971.9A patent/CN112599876A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723534A (en) * | 2011-03-31 | 2012-10-10 | 广州丰江电池新技术股份有限公司 | Rapid charging method of rechargeable batteries |
| CN103439664A (en) * | 2013-08-22 | 2013-12-11 | 安徽安凯汽车股份有限公司 | Pure electric vehicle power battery pack capacity calibration method based on current |
| CN103606716A (en) * | 2013-11-30 | 2014-02-26 | 华为技术有限公司 | Charging method and apparatus |
| CN104638311A (en) * | 2015-03-11 | 2015-05-20 | 浙江中科立德新材料有限公司 | Formation method of aqueous iron-lithium battery |
| CN104714189A (en) * | 2015-04-02 | 2015-06-17 | 奇瑞汽车股份有限公司 | Method for predicting cycle life of battery pack for electric car |
| CN105203965A (en) * | 2015-09-11 | 2015-12-30 | 国家电网公司 | Energy storage battery detection method |
| CN106597290A (en) * | 2015-12-24 | 2017-04-26 | 申勇兵 | Charging voltage test method for prolonging service life of lithium battery of emergency intelligent lamp |
| JP2018166108A (en) * | 2018-06-12 | 2018-10-25 | マクセルホールディングス株式会社 | Method for charging lithium ion secondary battery, and charge control system therefor |
| CN109061513A (en) * | 2018-09-21 | 2018-12-21 | 合肥国轩高科动力能源有限公司 | Test method for improving cycle life of lithium iron phosphate power lithium battery |
| CN109596997A (en) * | 2018-11-21 | 2019-04-09 | 湖北锂诺新能源科技有限公司 | Cycle life of lithium ion battery test method |
| CN109713387A (en) * | 2018-12-27 | 2019-05-03 | 肇庆遨优动力电池有限公司 | A method of improving lithium-rich manganese-based lithium ion battery cyclical stability |
| WO2020223880A1 (en) * | 2019-05-06 | 2020-11-12 | Oppo广东移动通信有限公司 | Charging method and charging apparatus |
| CN110133527A (en) * | 2019-05-08 | 2019-08-16 | 深圳市比克动力电池有限公司 | A method of capacity attenuation is analyzed based on three electrode lithium ion batteries |
| CN110165321A (en) * | 2019-07-08 | 2019-08-23 | 江苏塔菲尔新能源科技股份有限公司 | A kind of charging method of lithium ion battery |
| CN110880624A (en) * | 2019-11-29 | 2020-03-13 | 武汉瑞杰特材料有限责任公司 | Method for artificial failure of lithium ion battery |
| CN111007417A (en) * | 2019-12-06 | 2020-04-14 | 重庆大学 | Battery pack SOH and RUL prediction method and system based on inconsistency evaluation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108767909B (en) | Standard charging curve and charging method | |
| CN110165319B (en) | Sorting method for self-discharge performance of high-capacity lithium battery | |
| CN1977418B (en) | Method for charging a lithium-ion accumulator with a negative electrode | |
| CN107978790B (en) | Method and device for supplementing lithium to battery | |
| CN103633695A (en) | Improved lithium battery pack equalizing method and equalizing circuit thereof | |
| CN109017429B (en) | All-working-condition passive equalization algorithm for power battery pack quantization | |
| CN110880622A (en) | Equalization control method of battery pack | |
| CN112106248A (en) | Method for improving battery cycle performance and electronic device | |
| CN106786877A (en) | The method and device charged to high power battery | |
| CN109980306B (en) | Method for optimizing consistency of battery modules | |
| CN112104043A (en) | Lithium battery equalization control circuit with charging and power supplementing functions and control method thereof | |
| CN109818095B (en) | Battery charging and discharging pretreatment method, battery and preparation method thereof | |
| Lavety et al. | Multistep constant current-constant voltage charging strategy for a valve regulated lead-acid battery | |
| CN110797599A (en) | Container formation method of lead-acid storage battery for electric road vehicle | |
| CN110112807A (en) | A kind of more battery pack parallel power distribution methods of energy-storage system | |
| CN112946506B (en) | Method for rapidly testing cycle life of lithium ion battery | |
| CN112599876A (en) | Regulation and control method for prolonging service life of lithium ion battery pack | |
| CN114879053B (en) | Method for predicting service life of energy storage lithium iron phosphate battery | |
| Lencwe et al. | Performance studies of lead acid batteries for transport vehicles | |
| CN212588134U (en) | Lithium battery equalization control circuit with charging and power-supplementing functions | |
| CN102709614B (en) | Method for charging and discharging lithium secondary battery | |
| CN113172008A (en) | Cell consistency sorting method applied to energy storage lithium battery of semiconductor factory | |
| CN116073492B (en) | Passive balance control method between battery cells | |
| CN113517481A (en) | Lithium battery capacity grading method | |
| Chang et al. | Rapid partial charging of lead/acid batteries |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210402 |
|
| RJ01 | Rejection of invention patent application after publication |