CN108258346A - Secondary battery charging method - Google Patents
Secondary battery charging method Download PDFInfo
- Publication number
- CN108258346A CN108258346A CN201611245226.3A CN201611245226A CN108258346A CN 108258346 A CN108258346 A CN 108258346A CN 201611245226 A CN201611245226 A CN 201611245226A CN 108258346 A CN108258346 A CN 108258346A
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- Prior art keywords
- battery
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
-
- 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
-
- 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
-
- 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)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Power Engineering (AREA)
Abstract
The present invention provides a kind of secondary battery charging method, step is：It is charged with constant charging current I1 to battery, charging time t1；Stop charging, by battery standing, time of repose t2；With constant discharge current I2 to battery discharge, discharge time t3；Stop electric discharge, by battery standing, time of repose t4；5) it repeats the above steps until cell voltage reaches charge cutoff voltage V0；It is charged with constant voltage V0 to battery, until battery current reaches charge cutoff electric current I3.Compared with prior art, by the present invention in that with wide positive pulse electric current and narrow negative pulse current apart from one another by, and the charging modes of standing are introduced among positive pulse and negative pulse, effectively reduce the accumulation of battery polarization, the heat production of battery is reduced, slows down the Wen Sheng in battery charging process, prevents security risk caused by battery Wen Sheng, charging rate is also improved simultaneously, significantly improves battery performance and user experience.
Description
Technical field
The invention belongs to secondary cell field, more specifically to a kind of secondary battery charging method.
Background technology
When secondary cell charges, the factors such as polarization accumulation, lead to it caused by internal resistance existing for battery itself and charging
Continue heat production, temperature raising in charging process.
In order to solve problem of temperature rise during secondary cell charging, researcher passes through to battery material, battery knot for many years
Structure is improved to reduce the internal resistance of cell, and so as to reduce charging Wen Sheng, but this also results in the raising of battery cost simultaneously, and
Increase the complexity of related process.In fact, the polarization accumulation charged using battery is as point of penetration, and battery is original to match not changing
On the basis of side and structure, by changing charge condition, the problem of temperature rise in secondary cell charging process can also be generated certain
Effect of optimization.
At present, the charging modes of secondary cell are：A certain current potential is charged to battery last, then herein using constant current
Current potential carries out constant-voltage charge to battery.But this charging modes can cause the accumulation of battery polarization, in particular with current fast
The rise of fast charging technique, in order to improve the charging rate of secondary cell, the electric current used in charging process is increasing, this
The heat production of battery is exacerbated, so that under the action of battery polarization growth, battery charge temperature steeply rises, and not only affects
The usage experience of portable device is more likely to influence battery performance or even brings security risk.
In view of this, it is necessory to provide a kind of secondary battery charging method that can be solved the above problems.
Invention content
It is an object of the invention to：Battery polarization accumulation can be effectively reduced, reduce battery charging heat production, subtract by providing one kind
The secondary battery charging method of slow battery charging Wen Sheng.
To achieve these goals, the present invention provides a kind of secondary battery charging method, include the following steps：
1) it is charged with constant charging current I1 to battery, charging time t1；
2) stop charging, by battery standing, time of repose t2；
3) with constant discharge current I2 to battery discharge, discharge time t3；
4) stop electric discharge, by battery standing, time of repose t4；
5) repeat the above steps 1)~4), until cell voltage reaches charge cutoff voltage V0；
6) it is charged with constant voltage V0 to battery, until battery current reaches charge cutoff electric current I3.
Preferably, the charging current I1 and discharge current I2 has following relationship：2≤I1/I2≤200；Step 1) is extremely
4) time t1, t2, t3, t4 meets 2≤t1/ (t2+t3+t4)≤100.
Preferably, the charging current I1 is 0.2C~5C.
Preferably, the charging time t1 is 0.1s~30s.
Preferably, the discharge current I2 is 0.01C~0.5C.
Preferably, the time of repose t2 and t4 can be equal or unequal, and numberical range is 0.01s~5s.
Preferably, the discharge time t3 can be equal or unequal with time of repose t2, t4, and the numberical range of t3 is
0.01s~5s.
Preferably, the charge cutoff voltage V0 is 3V~5V.
Preferably, the charge cutoff electric current I3 is 0.01C~0.1C.
Preferably, the charging ambient temperature of the charging method is 0 DEG C~60 DEG C.
Preferably, the battery is lithium ion battery, lithium metal battery, lead-acid battery, nickel separation cell, Ni-MH battery, lithium
Sulphur battery, lithium-air battery or sodium-ion battery.
Preferably, the charging method can pass through battery charger, battery adapter, battery control circuit or integrated core
Piece is completed.
Preferably, the charging method can be applied to mobile phone, laptop, tablet computer, music player, bluetooth
Earphone, mobile power, other portable handheld devices, electric tool, unmanned plane, electric vehicle etc..
Compared with prior art, secondary battery charging method of the present invention at least has the advantages that：By using width
Positive pulse electric current and narrow negative pulse current apart from one another by and introducing among positive pulse and negative pulse the charging modes of standing
(i.e.：Wide positive pulse-standing-narrow negative pulse-standing), the accumulation of battery polarization is effectively reduced, the heat production of battery is reduced, subtracts
Delay the Wen Sheng in battery charging process, prevent security risk caused by battery Wen Sheng, while also improve charging rate, significantly
Improve battery performance and user experience.
Description of the drawings
With reference to the accompanying drawings and detailed description, to secondary battery charging method of the present invention and its advantageous effects into
Row is described in detail.
Fig. 1 is the charging current time history plot of secondary battery charging method of the present invention.
Fig. 2 is the charging current time history plot of secondary battery charging method embodiment 1 of the present invention.
Fig. 3 is the charging current time history plot of secondary battery charging method comparative example 1 of the present invention.
Fig. 4 is the charging current comparison diagram of the embodiment of the present invention 1 and comparative example 1.
Fig. 5 is the charging voltage comparison diagram of the embodiment of the present invention 1 and comparative example 1.
Fig. 6 is the charging temperature comparison diagram of the embodiment of the present invention 1 and comparative example 1.
Specific embodiment
It is clear in order to be more clear the purpose of the present invention, technical solution and advantageous effects, below in conjunction with attached drawing and
Specific embodiment, the present invention will be described in further detail.It should be understood that the specific implementation described in this specification
Mode is not intended to limit the present invention just for the sake of explaining the present invention.
Referring to Fig. 1, secondary battery charging method of the present invention includes the following steps：
1) it is charged with constant charging current I1 to battery, charging time t1；
2) stop charging, by battery standing, time of repose t2；
3) with constant discharge current I2 to battery discharge, discharge time t3；
4) stop electric discharge, by battery standing, time of repose t4；
5) repeat the above steps 1)~4), until cell voltage reaches charge cutoff voltage V0；
6) it is charged with constant voltage V0 to battery, until battery current reaches charge cutoff electric current I3.
Wherein, charging current I1 and discharge current I2 has following relationship：2≤I1/I2≤200；Step 1) to 4) when
Between t1, t2, t3, t4 meet 2≤t1/ (t2+t3+t4)≤100.The preferred scope of each charge parameter is respectively above：Charging electricity
It is preferably 0.2C~5C to flow I1；Charging time t1 is preferably 0.1s~30s；Discharge current I2 is preferably 0.01C~0.5C；It stands
Time, t2 and t4 were preferably 0.01s~5s；Discharge time t3 is preferably 0.01s~5s；Charge cutoff voltage V0 be preferably 3V~
5V；Charge cutoff electric current I3 is preferably 0.01C~0.1C；Charging ambient temperature is preferably 0 DEG C~60 DEG C.In more than preferred parameter
Under the conditions of, secondary battery charging method of the present invention will be with more excellent technique effect.
It is the embodiment and comparative example of secondary battery charging method of the present invention below.
Battery system used by embodiment and comparative example, is all with LiCoO2As cathode main material, made with graphite
For anode main material, along with diaphragm, electrolyte and pack case, by assembling, being melted into and be aged etc. made by techniques.Its
In, cathode is by 96.7%LiCoO2(as cathode active material), 1.7%PVDF (as binding agent) and 1.6%SP are (as leading
Electric agent) mixing composition, anode by 98% Delanium (as anode active material), 1.0%SBR (as binding agent) and
1.0%CMC (as thickener) mixing compositions, diaphragm is PE composite membranes, and electrolyte is by organic solvent 30%EC+30%PC+
The LiPF of 40%DEC, lithium salts 1mol/L6It is formed with additive 0.5%VC+5%FEC+4%VEC.At 25 DEG C, this battery is expired
Charging capacity is filled for 2770mAh, and charge cutoff voltage V0 is 4.35V.
Embodiment 1
Referring to Fig. 2, in 25 DEG C of environment, charged using secondary battery charging method of the present invention to above-mentioned battery,
It is as follows：
1) it is charged with constant current 2C to battery, charging time 9s；
2) stop charging, by battery standing, time of repose 0.5s；
3) with constant current 0.05C to battery discharge, discharge time 0.5s；
4) stop electric discharge, by battery standing, time of repose 0.5s；
5) step 1)~4 are repeated) until cell voltage reaches 4.35V；
6) it is charged with constant voltage 4.35V to battery, until battery current reaches 0.05C.
The step of embodiment 2~11, is substantially the same manner as Example 1, different only relevant parameters, each embodiment it is specific
Parameter is as shown in table 1.
Comparative example 1
Referring to Fig. 3, in 25 DEG C of environment, charged using following charging method to above-mentioned battery, specific steps are such as
Under：
1) it is charged with constant current 2C to battery, until cell voltage reaches 4.35V；
2) it is charged with constant voltage 4.35V to battery, until battery current reaches 0.05C.
The step of comparative example 2~7 and comparative example 1 are essentially identical, different only relevant parameters, the specific ginseng of each comparative example
Number is as shown in table 1.
For the technique effect that secondary battery charging method of the present invention is examined to be reached, in embodiment 1~11 and comparative example 2
In~7 battery charging process, the temperature data for putting LR8431-30 types data logger acquisition battery core surface day is used.It is different
Embodiment and comparative example charging process temperature rise situation and be charged to the 100%SOC required times as shown in table 1 (for
Convenient for comparing, the close comparative example of charge parameter and embodiment adjacent position is placed in table 1).
Table 1, the charge parameter of each embodiment and comparative example and charging result contrast table
As can be seen from Table 1, for same battery system, the conventional constant current constant voltage charging method phase used with comparative example
Than the secondary battery charging method that the embodiment of the present invention uses can reduce the Wen Sheng in battery charging process, also be able to simultaneously
Improve charging rate.
By investigating the voltage change in charging process, it can be seen that the operation principle of charging method of the present invention.For example, figure
4th, Fig. 5 and Fig. 6 is respectively electric current, voltage, the temperature variation curve of embodiment 1 and comparative example 1 in charging process.By Fig. 4~6
It can be seen that：Relative to comparative example 1, the voltage rising of embodiment 1 is more slow.In the preceding 10min of charging process, embodiment 1
Charging voltage is respectively less than the charging voltage of comparative example 1.This enables the battery of embodiment 1 effectively to alleviate pole in charging process
Change accumulation, reduce the voltage jump brought by polarization in turn, on the one hand reduce battery heat production, reduce battery Wen Sheng；Separately
On the one hand the time of large current charge is extended, the time of constant-voltage charge is shortened, so as to improve charging rate.
It should be noted that the charging method of the present invention can be applied to lithium ion battery, lithium metal battery, plumbic acid electricity
The secondary cells system such as pond, nickel separation cell, Ni-MH battery, lithium-sulfur cell, lithium-air battery, sodium-ion battery.
With reference to more than detailed description of the present invention it is found that relative to the prior art, secondary battery charging method of the present invention
Advantageous effects include but not limited to：By using wide positive pulse electric current and narrow negative pulse current apart from one another by, and
The charging modes of standing are introduced among positive pulse and negative pulse (i.e.：Wide positive pulse-standing-narrow negative pulse-standing), effectively subtract
Lack the accumulation of battery polarization, reduced the heat production of battery, slowed down the Wen Sheng in battery charging process, prevent battery Wen Sheng from making
Into security risk, while also improve charging rate, significantly improve battery performance and user experience.
According to above-mentioned principle, the present invention can also carry out the above embodiment appropriate change and modification.Therefore, this hair
It is bright to be not limited to specific embodiment disclosed and described above, some modifications and changes of the present invention should also be as to fall into this
In the scope of the claims of invention.In addition, although some specific terms, these terms are used in this specification
Merely for convenience of description, it does not limit the present invention in any way.
Claims (10)
1. a kind of secondary battery charging method, which is characterized in that include the following steps：
1) it is charged with constant charging current I1 to battery, charging time t1；
2) stop charging, by battery standing, time of repose t2；
3) with constant discharge current I2 to battery discharge, discharge time t3；
4) stop electric discharge, by battery standing, time of repose t4；
5) repeat the above steps 1)~4), until cell voltage reaches charge cutoff voltage V0；
6) it is charged with constant voltage V0 to battery, until battery current reaches charge cutoff electric current I3.
2. secondary battery charging method according to claim 1, it is characterised in that：The charging current I1 and discharge current
I2 has following relationship：2≤I1/I2≤200；Step 1) to 4) time t1, t2, t3, t4 meet 2≤t1/ (t2+t3+t4)
≤100。
3. secondary battery charging method according to claim 1, it is characterised in that：The charging current I1 for 0.2C~
5C。
4. secondary battery charging method according to claim 1, it is characterised in that：The charging time t1 for 0.1s~
30s。
5. secondary battery charging method according to claim 1, it is characterised in that：The discharge current I2 for 0.01C~
0.5C。
6. secondary battery charging method according to claim 1, it is characterised in that：The time of repose t2 and t4 can phase
Deng or it is unequal, respective numberical range is 0.01s~5s.
7. secondary battery charging method according to claim 1, it is characterised in that：The discharge time t3 and time of repose
T2, t4 can be equal or unequal, and the numberical range of t3 is 0.01s~5s.
8. secondary battery charging method according to claim 1, it is characterised in that：The charge cutoff voltage V0 for 3V~
5V。
9. secondary battery charging method according to claim 1, it is characterised in that：The charge cutoff electric current I3 is
0.01C~0.1C.
10. secondary battery charging method according to claim 1, it is characterised in that：The charging environment of the charging method
Temperature is 0 DEG C~60 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611245226.3A CN108258346A (en) | 2016-12-29 | 2016-12-29 | Secondary battery charging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611245226.3A CN108258346A (en) | 2016-12-29 | 2016-12-29 | Secondary battery charging method |
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| CN108258346A true CN108258346A (en) | 2018-07-06 |
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ID=62719881
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| CN201611245226.3A Pending CN108258346A (en) | 2016-12-29 | 2016-12-29 | Secondary battery charging method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109065989A (en) * | 2018-07-27 | 2018-12-21 | 维沃移动通信有限公司 | A kind of charging method and charging unit |
| CN109509927A (en) * | 2019-01-07 | 2019-03-22 | 东莞赣锋电子有限公司 | A kind of charging modes of lithium ion battery |
| CN109510285A (en) * | 2019-01-07 | 2019-03-22 | 东莞赣锋电子有限公司 | A kind of charging device for lithium ion cell and method |
| CN109742466A (en) * | 2018-11-23 | 2019-05-10 | 颍上北方动力新能源有限公司 | A kind of lithium battery charging method |
| CN111342160A (en) * | 2020-03-09 | 2020-06-26 | 欣旺达电动汽车电池有限公司 | Quick charging method |
| CN111755764A (en) * | 2020-07-07 | 2020-10-09 | 天科新能源有限责任公司 | Method for reducing polarization of lithium battery |
| CN112259814A (en) * | 2020-09-24 | 2021-01-22 | 东莞东阳光科研发有限公司 | Method for improving capacity retention rate of lithium-sulfur battery |
| CN112993423A (en) * | 2021-02-19 | 2021-06-18 | 芜湖天弋能源科技有限公司 | Method for improving capacity of lithium ion battery cell module |
| CN113241482A (en) * | 2021-02-10 | 2021-08-10 | 中国科学院金属研究所 | Charging technology of lithium-sulfur battery |
| CN114531928A (en) * | 2021-03-25 | 2022-05-24 | 宁德新能源科技有限公司 | Charging method, charging device and charging equipment |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11929635B2 (en) | 2018-07-27 | 2024-03-12 | Vivo Mobile Communication Co., Ltd. | Charging method and charging device |
| CN109065989B (en) * | 2018-07-27 | 2020-06-05 | 维沃移动通信有限公司 | Charging method and charging device |
| CN109065989A (en) * | 2018-07-27 | 2018-12-21 | 维沃移动通信有限公司 | A kind of charging method and charging unit |
| CN109742466A (en) * | 2018-11-23 | 2019-05-10 | 颍上北方动力新能源有限公司 | A kind of lithium battery charging method |
| CN109509927A (en) * | 2019-01-07 | 2019-03-22 | 东莞赣锋电子有限公司 | A kind of charging modes of lithium ion battery |
| CN109510285A (en) * | 2019-01-07 | 2019-03-22 | 东莞赣锋电子有限公司 | A kind of charging device for lithium ion cell and method |
| CN111342160A (en) * | 2020-03-09 | 2020-06-26 | 欣旺达电动汽车电池有限公司 | Quick charging method |
| CN111755764A (en) * | 2020-07-07 | 2020-10-09 | 天科新能源有限责任公司 | Method for reducing polarization of lithium battery |
| CN112259814A (en) * | 2020-09-24 | 2021-01-22 | 东莞东阳光科研发有限公司 | Method for improving capacity retention rate of lithium-sulfur battery |
| CN113241482A (en) * | 2021-02-10 | 2021-08-10 | 中国科学院金属研究所 | Charging technology of lithium-sulfur battery |
| CN112993423A (en) * | 2021-02-19 | 2021-06-18 | 芜湖天弋能源科技有限公司 | Method for improving capacity of lithium ion battery cell module |
| CN112993423B (en) * | 2021-02-19 | 2022-11-25 | 芜湖天弋能源科技有限公司 | Method for improving capacity of lithium ion battery cell module |
| CN114531928A (en) * | 2021-03-25 | 2022-05-24 | 宁德新能源科技有限公司 | Charging method, charging device and charging equipment |
| WO2022198584A1 (en) * | 2021-03-25 | 2022-09-29 | 宁德新能源科技有限公司 | Charging method, charging apparatus, and charging device |
| CN114531928B (en) * | 2021-03-25 | 2024-05-10 | 宁德新能源科技有限公司 | Charging method, charging device and charging equipment |
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