CN107658515A - Improve the method for pre-charging and system of analysis lithium - Google Patents
Improve the method for pre-charging and system of analysis lithium Download PDFInfo
- Publication number
- CN107658515A CN107658515A CN201610594907.4A CN201610594907A CN107658515A CN 107658515 A CN107658515 A CN 107658515A CN 201610594907 A CN201610594907 A CN 201610594907A CN 107658515 A CN107658515 A CN 107658515A
- Authority
- CN
- China
- Prior art keywords
- battery
- voltage
- electric current
- charge
- current
- 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
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
- H01M10/446—Initial charging measures
-
- 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
Abstract
The present invention relates to a kind of method for pre-charging and system for improving analysis lithium, charged with the first current versus cell, so that the battery core surface of the battery forms solid electrolyte interface film, the voltage for continuing to charge to the battery to the battery with the second electric current reaches predetermined voltage range, the current value of first electric current is less than the current value of second electric current, gradually reduce second electric current to charge to the battery, the voltage to the battery reaches charge cutoff voltage；This programme first passes through less first current versus cell of amplitude and carries out preliminary filling, so that solid electrolyte interface film is formed in battery core, then quick charge is carried out by the second larger electric current of amplitude, when cell voltage is less than predetermined voltage range, the embedding lithium space of battery core is plentiful, preliminary filling electric current is finally gradually reduced, until the voltage of battery reaches charge cutoff voltage；While battery charge time is reduced, improve analysis lithium problem, improve the security performance and its service life of battery core.
Description
Technical field
The present invention relates to lithium ion battery charging field, more particularly to a kind of method for pre-charging and system for improving analysis lithium.
Background technology
With the popularization of all kinds of mobile terminals, lithium ion battery is excellent due to its energy density height, average output voltage height etc.
Point becomes main flow powered products, and lithium ion battery needs the preliminary filling process by first time charging, many producers before dispatching from the factory
In order to adapt to increasingly hot power market, shorten the production cycle, production capacity is improved, when reducing the preliminary filling of lithium ion battery intentionally
Between, current widespread practice although this method can play the effect got instant result, but is also brought to increase preliminary filling electric current
The problem of inevitable --- analysis lithium, i.e., lithium metal precipitation is had on anode battery core surface, this process is irreversible, and analysis lithium can drop
The security performance and its service life of low battery core.
The content of the invention
Based on this, it is necessary to provide a kind of method for pre-charging and system for improving analysis lithium, reducing the same of battery charge time
When, improve analysis lithium problem, improve the security performance and its service life of battery core.
On the one hand, the present invention provides a kind of method for pre-charging for improving analysis lithium, including：
Charged with the first current versus cell so that the battery core surface of the battery forms solid electrolyte interface film；
The voltage for continuing to charge to the battery to the battery with the second electric current reaches predetermined voltage range；Described first
The current value of electric current is less than the current value of second electric current；
The current value for gradually reducing second electric current is charged to the battery, and the voltage of the extremely battery, which reaches, to be filled
Electric blanking voltage.
In one of the embodiments, described the step of being charged with the first current versus cell, is specially：Using amplitude as
0.1C current versus cell is charged, charging interval 55min so that the voltage of the battery reaches 3.4V~3.5V.
In one of the embodiments, the voltage for continuing to charge to the battery to the battery with the second electric current reaches
It is specially to the step of predetermined voltage range：The battery is carried out using amplitude as 0.6C~2C electric current to charge to the battery
Voltage reach 3.7V~3.9V.
In one of the embodiments, it is described to gradually reduce second electric current battery is charged, to described
The step of voltage of battery reaches charge cutoff voltage be specially：
Reduce by second electric current and to the battery charge to the voltage of the battery and reach 4.0V~4.1V；
Further reduce by second electric current and continue to charge to the voltage of the battery to the battery and reach 4.2V.
In one of the embodiments, the voltage for reducing the second electric current and to the battery charge to the battery
The step of reaching 4.0V~4.1V be specially：The battery is carried out using amplitude as 0.2C~0.6C electric current to charge to the electricity
The voltage in pond reaches 4.0V~4.1V.
In one of the embodiments, it is described further reduce by second electric current battery is continued to charge to it is described
The step of voltage of battery reaches 4.2V be specially：The battery is continued to charge to the electricity with electric current of the amplitude less than 0.2C
The voltage in pond reaches 4.2V.
On the other hand, the present invention provides a kind of pre-fill system for improving analysis lithium, including：
First pre-charge module, for being charged with the first current versus cell so that the battery core surface of the battery
Form solid electrolyte interface film；
Second pre-charge module, the voltage for continuing to charge to the battery to the battery with the second electric current reach
Predetermined voltage range, the current value of first electric current are less than the current value of second electric current；
Current charge module is progressively dropped, the battery is charged for gradually reducing second electric current, to the electricity
The voltage in pond reaches charge cutoff voltage.
In one of the embodiments, it is 0.1C electric current to electricity that the first pre-charge module, which is specifically used for using amplitude,
Pond is charged, charging interval 55min so that the voltage of the battery reaches 3.4V~3.5V；
The electric current that the second pre-charge module is specifically used for using amplitude as 0.6C~2C charges to the battery
Voltage to the battery reaches 3.7V~3.9V.
In one of the embodiments, the progressively drop current charge module includes：
Current charge module drops in one-level, to the battery charge to the electricity of the battery for reducing by second electric current
Pressure reaches 4.0V~4.1V；
Current charge module drops in two level, and the battery is continued to charge to the electricity for further reducing by second electric current
The voltage in pond reaches 4.2V.
In one of the embodiments, the one-level drop current charge module is specifically used for the electricity using amplitude as 0.2C~0.6C
The voltage that stream to the battery charge to the battery reaches 4.0V~4.1V；
The two level drop current charge module is specifically used for the battery is continued to charge to electric current of the amplitude less than 0.2C
The voltage of the battery reaches 4.2V.
The method for pre-charging and system of above-mentioned improvement analysis lithium, are charged so that the battery with the first current versus cell
Battery core surface forms solid electrolyte interface film, and the voltage for continuing to charge to the battery to the battery with the second electric current reaches
Predetermined voltage range, the current value of first electric current are less than the current value of second electric current, gradually reduce second electricity
Stream charges to the battery, and the voltage to the battery reaches charge cutoff voltage；It is less that this programme first passes through amplitude
First current versus cell carry out preliminary filling so that in battery core formed solid electrolyte interface film, then by amplitude it is larger second
Electric current carries out quick charge, and when cell voltage is less than predetermined voltage range, the embedding lithium space of battery core is plentiful, finally gradually reduces pre-
Charging stream, until the voltage of battery reaches charge cutoff voltage；While battery charge time is reduced, improve analysis lithium problem,
Improve the security performance and its service life of battery core.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, embodiment will be described below
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also be attached according to these
Figure obtains the accompanying drawing of other embodiment.
Fig. 1 is the flow chart for the method for pre-charging for improving analysis lithium in an embodiment；
Fig. 2 is the flow chart for the method for pre-charging for improving analysis lithium in another embodiment；
Fig. 3 is the profile after being charged in an embodiment using traditional method for pre-charging to battery core；
Fig. 4 is the profile after being charged in an embodiment using the method for pre-charging of the present invention to battery core；
Fig. 5 is the structure chart for the pre-fill system for improving analysis lithium in an embodiment；
Fig. 6 is the structure chart for the pre-fill system for improving analysis lithium in another embodiment.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
Referring to Fig. 1, Fig. 1 is the flow chart for the method for pre-charging for improving analysis lithium in an embodiment.
In the present embodiment, the method for pre-charging of improvement analysis lithium includes：
S101, charged with the first current versus cell so that the battery core surface of the battery forms solid electrolyte circle
Facial mask.
Above-mentioned battery refers to lithium ion battery, needs by preliminary filling, i.e., to charge, to it enter for the first time before the battery dispatches from the factory
During row preliminary filling, charged first by low current so that the battery core top layer of battery forms solid electrolyte interface film, the solid
Electrolyte interface film is that electrode material reacts with electrolyte on solid-liquid phase interface, and one layer of formation is covered in electrode material
The passivation layer on surface, the passivation layer can effectively prevent solvent molecule insertion battery core from being destroyed to caused by electrode material, greatly
Improve the cycle performance and service life of battery core.Charged with less first current versus cell of amplitude, when the electricity of battery
When pressure reaches 3.4V~3.5V, above-mentioned solid electrolyte interface film can be formed on battery core surface.
In one of the embodiments, referring to Fig. 2, the amplitude of first electric current is 0.1C, and wherein C represents battery capacity,
If battery capacity C is 1000mAh, 0.1C charging current is 100mA.Current versus cell using amplitude as 0.1C is filled
Electricity, charging interval 55min, now the voltage of battery rise to 3.4V~3.5V, the process can cause battery core surface to be formed surely
Fixed, homogeneous, fine and close solid electrolyte interface film, greatly improve the cycle performance and service life of battery.
S102, the voltage for continuing to charge to the battery to the battery with the second electric current reach predetermined voltage range, institute
The current value for stating the first electric current is less than the current value of second electric current.
When cell voltage is less than 3.9V, the embedding lithium space of battery core is plentiful, can accommodate substantial amounts of lithium ion, now pass through width
It is worth the second larger electric current and carries out quick charge, can greatly accelerate charging process, reduces the charging interval, and in the process
In will not because embedding lithium insufficient space and caused by lithium ion be deposited on battery core surface, that is, analyse lithium the problem of.
In one of the embodiments, referring to Fig. 2, the amplitude of second electric current is 0.6C~2C, the predetermined voltage range
For 3.7V~3.9V, the voltage for continuing to charge to the battery to the battery using amplitude as 0.6C~2C electric current reaches 3.7V
~3.9V, charging rate can be accelerated in this process, while will not worry to analyse lithium problem.
S103, gradually reduce second electric current and the battery is charged, the voltage to the battery reaches charging
Blanking voltage.
After the voltage of battery reaches 3.9V, the embedding lithium space of its battery core diminishes, and now, progressively reduces preliminary filling electric current,
Until the voltage of battery reaches charge cutoff voltage, the charge cutoff voltage is 4.2V, needs to meet battery core in the charging process
Embedding lithium speed be less than the speed that is deposited on its surface of lithium ion, produce analysis lithium to prevent lithium ion can not be embedded in battery core.
In one of the embodiments, referring to Fig. 2, this gradually reduces second electric current and the battery is charged,
The step of voltage of the extremely battery reaches charge cutoff voltage can be divided into two steps, be specially：
The first step：The voltage for the battery charge to the battery using amplitude as 0.2C~0.6C electric current reaches
4.0V~4.1V.
Second step, the voltage for continuing to charge to the battery to the battery with electric current of the amplitude less than 0.2C reach
4.2V。
In one of the embodiments, 2 groups of experiment battery cores are sampled, every group each 15, dry-storage uses respectively after terminating
Following process carries out preliminary filling：
Scheme 1：Pre-charge 55min using amplitude as 0.1C, it is then 0.5C pre-charge to 4.2V using amplitude, most
Afterwards using the electric current that amplitude is 0.01C up to being full of.
Scheme 2：Pre-charge 55min using amplitude as 0.1C, then turned using the pre-charge that amplitude is 0.8C to 3.7V
Amplitude be 0.6C pre-charge to 4.0V, turn pre-charge that amplitude is 0.1C to 4.2V, finally the electricity using amplitude as 0.01C
Stream is until be full of.
Preliminary filling counts this two groups of experiment battery cores preliminary filling after terminating takes, each random dissection 5 of group corresponding to each scheme
Battery core, observation analysis is carried out to the analysis lithium situation of this 5 battery cores, obtained：
The average charge time of the battery core to be charged by scheme 1 is about 280min；Charged by scheme 2
The average charge time of battery core is about 245min, and the charging interval of scheme 2 significantly reduces.
And randomly select 5 battery cores respectively from two groups of battery cores and dissected, referring to Fig. 3 and Fig. 4, Fig. 3 is an embodiment
It is middle battery core is charged using traditional method for pre-charging after profile, traditional method for pre-charging is scheme 1；Fig. 4 is
Profile after being charged in one embodiment using the method for pre-charging of the present invention to battery core, method for pre-charging of the invention are side
Case 2.Find that the battery core surface color that the two panels randomly selected is charged by scheme 2 is uniform, does not almost have by observing contrast
Argenteous lithium metal is occurred, and there is obvious silvery white on the battery core surface that the two panels randomly selected is charged by scheme 1
Color substance is distributed, and it is lithium ion precipitation phenomenon, as shown in the white portion in black dotted lines frame in Fig. 3.
The method for pre-charging of above-mentioned improvement analysis lithium, first passes through low current and carries out preliminary filling to battery, its surface is formed stably,
First, fine and close solid electrolyte interface film, is greatly improved the cycle performance and service life of battery, is then entered with high current
Row quick charge, until the voltage of battery reaches predetermined voltage range, before the voltage of battery reaches 3.9V, the embedding lithium of its battery core
Space is plentiful, can accelerate charging process by increasing charging current, while will not produce analysis lithium, is finally ensureing the embedding of battery core
Lithium speed progressively reduces preliminary filling electric current less than lithium ion in the case of its surface deposition velocity, is filled until the voltage of battery reaches
Electric blanking voltage, the charging interval is both shortened, also without analysis lithium phenomenon is produced, improve the security performance of battery core and its using the longevity
Life.
Referring to Fig. 5, Fig. 5 is the structure chart for the pre-fill system for improving analysis lithium in an embodiment.
In the present embodiment, the pre-fill system of improvement analysis lithium includes：
First pre-charge module 10, for being charged with the first current versus cell so that the battery core table of the battery
Face forms solid electrolyte interface film.
In one of the embodiments, it is 0.1C electric current to electricity that the first pre-charge module 10, which is specifically used for using amplitude,
Pond is charged, charging interval 55min so that the voltage of the battery reaches 3.4V~3.5V.
Second pre-charge module 11, the voltage for continuing to charge to the battery to the battery with the second electric current reach
Reach predetermined voltage range, the electricity of first electric current to the voltage for continuing to charge to the battery to the battery with high current
Flow valuve is less than the current value of second electric current.
In one of the embodiments, the second pre-charge module 11 is specifically used for the electric current using amplitude as 0.6C~2C
The voltage for the battery charge to the battery reaches 3.7V~3.9V.
Current charge module 12 is progressively dropped, the battery is charged for gradually reducing second electric current, described in
The voltage of battery reaches charge cutoff voltage.
Referring to Fig. 6, in one of the embodiments, this, which progressively drops current charge module 12, includes：
One-level drop current charge module 121, to the battery charge to the electricity of the battery for reducing the second electric current
Pressure reaches 4.0V~4.1V；
Two level drop current charge module 122, continues to charge to institute for further reducing by second electric current to the battery
The voltage for stating battery reaches 4.2V.
In one of the embodiments, one-level drop current charge module 121 is specifically used for using amplitude as 0.2C~0.6C's
The voltage that electric current to the battery charge to the battery reaches 4.0V~4.1V.
In one of the embodiments, two level drop current charge module 122 is specifically used for the electric current for being less than 0.2C with amplitude
The voltage for continuing to charge to the battery to the battery reaches 4.2V.
The pre-fill system of above-mentioned improvement analysis lithium, with reference to actual conditions of the lithium ion battery in charging process, first with amplitude
It is charged for 0.1C low current, forms the solid electrolyte interface film to be played a protective role to battery core, now lithium-ion electric
The voltage in pond reaches 3.4V~3.5V, and the embedding lithium space due to battery core during its voltage rises to 3.9V is plentiful, selects width
It is worth and quick charge is carried out to it for 0.2C~0.6C high current, accelerate the speed of preliminary filling, shortens the time cycle of preliminary filling, at it
After voltage reaches 3.9V, the embedding lithium space of battery core reduces, and now reduces preliminary filling electric current in two steps so that the embedding lithium speed of battery core
The speed deposited less than lithium ion on its surface, until the voltage of lithium ion battery reaches charge cutoff voltage, analysis is both improved
Lithium problem, preliminary filling speed is accelerated again.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- A kind of 1. method for pre-charging for improving analysis lithium, it is characterised in that including：Charged with the first current versus cell so that the battery core surface of the battery forms solid electrolyte interface film；The voltage for continuing to charge to the battery to the battery with the second electric current reaches predetermined voltage range；First electric current Current value be less than second electric current current value；The current value for gradually reducing second electric current charges to the battery, and the voltage to the battery reaches charging section Only voltage.
- 2. according to the method for claim 1, it is characterised in that described the step of being charged with the first current versus cell has Body is：Current versus cell using amplitude as 0.1C is charged, charging interval 55min so that the voltage of the battery reaches 3.4V~3.5V.
- 3. according to the method for claim 1, it is characterised in that described that the battery is continued with the second electric current to charge to institute State the step of the voltage of battery reaches predetermined voltage range and be specially：Electric current using amplitude as 0.6C~2C is carried out to the battery The voltage for charging to the battery reaches 3.7V~3.9V.
- 4. according to the method for claim 1, it is characterised in that described to gradually reduce second electric current battery is entered Row charging, the step of reaching charge cutoff voltage to the voltage of the battery be specially：Reduce by second electric current and to the battery charge to the voltage of the battery and reach 4.0V~4.1V；Further reduce by second electric current and continue to charge to the voltage of the battery to the battery and reach 4.2V.
- 5. according to the method for claim 4, it is characterised in that the second electric current of the reduction charges to the battery The step of voltage of the battery reaches 4.0V~4.1V be specially：Electric current using amplitude as 0.2C~0.6C enters to the battery The voltage that row charges to the battery reaches 4.0V~4.1V.
- 6. according to the method for claim 4, it is characterised in that described further to reduce by second electric current to the battery Continue to charge to the step of the voltage of the battery reaches 4.2V and be specially：With amplitude less than 0.2C electric current to the battery after The continuous voltage for charging to the battery reaches 4.2V.
- A kind of 7. pre-fill system for improving analysis lithium, it is characterised in that including：First pre-charge module, for being charged with the first current versus cell so that the battery core surface of the battery is formed Solid electrolyte interface film；Second pre-charge module, the voltage for continuing to charge to the battery to the battery with the second electric current reach default Voltage range, the current value of first electric current are less than the current value of second electric current；Current charge module is progressively dropped, the battery is charged for gradually reducing second electric current, to the battery Voltage reaches charge cutoff voltage.
- 8. system according to claim 7, it is characterised in that the first pre-charge module be specifically used for using amplitude as 0.1C current versus cell is charged, charging interval 55min so that the voltage of the battery reaches 3.4V~3.5V；The electric current that the second pre-charge module is specifically used for using amplitude as 0.6C~2C is charged to institute to the battery The voltage for stating battery reaches 3.7V~3.9V.
- 9. system according to claim 7, it is characterised in that the progressively drop current charge module includes：Current charge module drops in one-level, and the voltage for the battery charge to the battery for reducing by second electric current reaches To 4.0V~4.1V；Current charge module drops in two level, and the battery is continued to charge to the battery for further reducing by second electric current Voltage reaches 4.2V.
- 10. system according to claim 9, it is characterised in that the one-level drop current charge module is specifically used for amplitude To the battery charge to the voltage of the battery for 0.2C~0.6C electric current and reach 4.0V~4.1V；Two level drop current charge module is specifically used for the battery is continued to charge to electric current of the amplitude less than 0.2C described The voltage of battery reaches 4.2V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594907.4A CN107658515A (en) | 2016-07-26 | 2016-07-26 | Improve the method for pre-charging and system of analysis lithium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594907.4A CN107658515A (en) | 2016-07-26 | 2016-07-26 | Improve the method for pre-charging and system of analysis lithium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107658515A true CN107658515A (en) | 2018-02-02 |
Family
ID=61127375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610594907.4A Pending CN107658515A (en) | 2016-07-26 | 2016-07-26 | Improve the method for pre-charging and system of analysis lithium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107658515A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110061315A (en) * | 2019-03-29 | 2019-07-26 | 欣旺达电动汽车电池有限公司 | A kind of lithium ion battery fast charge method |
| CN110165318A (en) * | 2019-06-06 | 2019-08-23 | 合肥众禾动力新能源科技有限公司 | A kind of method for pre-charging improving analysis lithium |
| CN115684785A (en) * | 2022-10-28 | 2023-02-03 | 赣州立探新能源科技有限公司 | Method for testing gram capacity of graphite material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330158A (en) * | 2007-06-22 | 2008-12-24 | 比亚迪股份有限公司 | Method for forming lithium ion secondary battery |
| CN103151570A (en) * | 2013-03-06 | 2013-06-12 | 江苏恒迅中锂新能源科技有限公司 | Charge method of charger of lithium-ion battery pack |
| CN104577202A (en) * | 2013-10-17 | 2015-04-29 | 奇瑞汽车股份有限公司 | Formation method and preparation method of high-voltage lithium ion battery as well as battery |
-
2016
- 2016-07-26 CN CN201610594907.4A patent/CN107658515A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330158A (en) * | 2007-06-22 | 2008-12-24 | 比亚迪股份有限公司 | Method for forming lithium ion secondary battery |
| CN103151570A (en) * | 2013-03-06 | 2013-06-12 | 江苏恒迅中锂新能源科技有限公司 | Charge method of charger of lithium-ion battery pack |
| CN104577202A (en) * | 2013-10-17 | 2015-04-29 | 奇瑞汽车股份有限公司 | Formation method and preparation method of high-voltage lithium ion battery as well as battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110061315A (en) * | 2019-03-29 | 2019-07-26 | 欣旺达电动汽车电池有限公司 | A kind of lithium ion battery fast charge method |
| CN110165318A (en) * | 2019-06-06 | 2019-08-23 | 合肥众禾动力新能源科技有限公司 | A kind of method for pre-charging improving analysis lithium |
| CN110165318B (en) * | 2019-06-06 | 2022-02-18 | 合肥众禾动力新能源科技有限公司 | Pre-charging method for improving lithium separation |
| CN115684785A (en) * | 2022-10-28 | 2023-02-03 | 赣州立探新能源科技有限公司 | Method for testing gram capacity of graphite material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105633472B (en) | A kind of lithium ion battery self discharge rate uniformity group gas-mixing screening method | |
| CN104377396B (en) | A kind of lithium battery group charging method | |
| CN102324570B (en) | Lithium ion battery, its formation method and preparation method | |
| CN109037811A (en) | A kind of charging method of graphite cathode system lithium ion battery | |
| CN104409790B (en) | A kind of precharging formation method of lithium ion battery | |
| CN107706471A (en) | Lithium secondary battery charging method | |
| CN105070963B (en) | The optimization method of high-multiplying power lithium ion battery SEI films | |
| CN108872859A (en) | Detection method for battery lithium separation, battery management system and battery system | |
| CN102760908A (en) | Quick formation method for lithium ion battery adapting to various cathode material systems | |
| KR102639837B1 (en) | Lithium ion battery and its manufacturing method and charging/discharging method | |
| CN107204493A (en) | Battery charging method, device and equipment | |
| CN101777669A (en) | Precharging formation method for lithium ion battery | |
| CN107069120A (en) | A kind of fast charging device and method of electric car automobile lithium ion battery | |
| CN101714665B (en) | Battery formation method | |
| CN107808987A (en) | Secondary battery charging method | |
| CN106654420B (en) | Capacity of lithium ion battery method for separating | |
| CN102728564A (en) | Screening method of lithium cobaltate monomer batteries | |
| CN105277885B (en) | A kind of method for shortening the cycle life of lithium ion battery evaluation and test time | |
| CN107658515A (en) | Improve the method for pre-charging and system of analysis lithium | |
| CN106469805A (en) | A kind of raising winding type battery pole piece caking property and flexible method | |
| CN109378534A (en) | Charging method, charging unit and mobile terminal | |
| CN105514514A (en) | Optimized charging method of lithium-ion power battery | |
| CN101976744A (en) | Charging and discharging method for secondary battery | |
| CN109841914B (en) | Pre-charging method of ternary soft package lithium ion power battery | |
| CN103401037B (en) | A kind of charging method of traction accumulator |
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 |