CN107219468A - A kind of lithium ion battery self discharge screening technique and Li-ion batteries piles - Google Patents
A kind of lithium ion battery self discharge screening technique and Li-ion batteries piles Download PDFInfo
- Publication number
- CN107219468A CN107219468A CN201710509201.8A CN201710509201A CN107219468A CN 107219468 A CN107219468 A CN 107219468A CN 201710509201 A CN201710509201 A CN 201710509201A CN 107219468 A CN107219468 A CN 107219468A
- Authority
- CN
- China
- Prior art keywords
- battery
- open
- circuit voltage
- pressure drop
- self discharge
- 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
-
- 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
- G01R31/388—Determining ampere-hour charge capacity or SoC involving voltage measurements
Abstract
The invention discloses a kind of lithium ion battery self discharge screening technique and Li-ion batteries piles, the screening technique includes：To the constant-current charging of battery after partial volume to default state-of-charge, alternative battery of the cell voltage in setting range is picked out；The alternative battery is shelved at a set temperature, the open-circuit voltage for carrying out three minor ticks setting duration to the alternative battery during shelving is tested；The pressure drop tested based on adjacent open-circuit voltage twice, is screened by the pressure drop reference value of setting to the alternative battery.The present invention is in the open-circuit voltage of lithium ion battery under low state-of-charge by measuring, battery is screened by setting pressure drop reference value, solve under the conditions of partly filling or completely filling, the cell voltage filtered out is identical, the problem of capacity but differs larger, realize under normal temperature condition it is quick, efficiently and accurately filter out self discharge big battery.
Description
Technical field
The present embodiments relate to lithium ion battery technology, more particularly to a kind of lithium ion battery self discharge screening technique and
Li-ion batteries piles.
Background technology
Under the promotion of national relevant law, lithium ion battery industry shows some new situation and new change, 2015
In the Chinese lithium ion battery demand increment in year, created more than 3/4 by new-energy automobile market, new-energy automobile market is
Through the main power as the electric industry high speed development of Chinese lithium.
Because the Li-ion batteries piles used in electric automobile are made up of substantial amounts of monomer lithium ion battery connection in series-parallel
, each cell self discharge is inconsistent to not only result in the energy loss of battery in itself, also results in battery capacity fast
Speed decay, the life-span is reduced, and when serious, BMS (Battery Mangement System, battery management system) system can be to battery
There is larger error in state-of-charge prediction, causes electric car control strategy to fail.Therefore, finding one kind can accurately choose from putting
TV university battery, the screening scheme for shortening detection cycle is of great significance for lithium ion battery manufacturing enterprise tool.
Existing lithium ion battery self discharge screening scheme requires battery under the conditions of partly filling or completely filling mostly, due to lithium ion
The unique charge and discharge platform of battery, causes to screen obtained battery although voltage is identical, and capacity but may differ by larger, such as Fig. 1
It is shown.
The content of the invention
The present invention provides a kind of lithium ion battery self discharge screening technique and Li-ion batteries piles, to realize under normal temperature condition
Quickly, self discharge big battery is efficiently and accurately filtered out.
In a first aspect, the embodiments of the invention provide a kind of lithium ion battery self discharge screening technique, including：
To the constant-current charging of battery after partial volume to default state-of-charge, alternative electricity of the cell voltage in setting range is picked out
Pond；
The alternative battery is shelved at a set temperature, the alternative battery carried out three times during shelving
The open-circuit voltage test of interval setting duration；
The pressure drop tested based on adjacent open-circuit voltage twice, is sieved by the pressure drop reference value of setting to the alternative battery
Choosing.
Second aspect, the embodiment of the present invention additionally provides a kind of Li-ion batteries piles, the battery core of the Li-ion batteries piles
Formed by lithium ion battery self discharge screening technique screening combo.
The present invention is in the open-circuit voltage of lithium ion battery under low state-of-charge by measuring, by setting pressure drop reference value pair
Battery is screened, and is solved under the conditions of partly filling or completely filling, and the cell voltage filtered out is identical, and capacity but differs larger and asked
Topic, realize under normal temperature condition it is quick, efficiently and accurately filter out self discharge big battery.
Brief description of the drawings
Fig. 1 is the schematic diagram of lithium ion battery charging and discharging curve in the prior art.
Fig. 2 is a kind of flow chart of lithium ion battery self discharge screening technique in the embodiment of the present invention one.
Fig. 3 is a kind of flow chart of lithium ion battery self discharge screening technique in the embodiment of the present invention two.
Fig. 4 is a kind of flow chart of lithium ion battery self discharge screening technique in the embodiment of the present invention three.
Fig. 5 is the distribution map for shelving rear cell voltage drop for the second time in the embodiment of the present invention three.
Fig. 6 is that the third time in the embodiment of the present invention three shelves the distribution map that rear cell voltage drops.
Fig. 7 is a kind of structural representation of Li-ion batteries piles in the embodiment of the present invention four.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Embodiment one
Fig. 2 is a kind of flow chart for lithium ion battery self discharge screening technique that the embodiment of the present invention one is provided, this implementation
Example is applicable to carry out lithium ion battery the situation of self discharge screening, and this method can be performed by lithium ion battery, specifically
Comprise the following steps：
Step S110, to the constant-current charging of battery after partial volume to default state-of-charge, pick out cell voltage setting model
The alternative battery enclosed；
Constant-current charge is carried out to the battery after partial volume, after charging is finished, the default state-of-charge of battery is 1%~10%,
The preferred value of its default state-of-charge is 5%, picks out alternative battery of the cell voltage in 3.10~3.20V；
Wherein, partial volume is carried out to lithium ion battery, including：Constant-current constant-voltage charging is carried out to battery using 0.3C~1C, cut
Only voltage is set to 3.65V；Using 0.3~1C constant-current discharges, blanking voltage is set to 2.5V；Using 0.05C constant-current discharges, cut-off electricity
Pressure is set to 2.0V.
Step S120, the alternative battery shelved at a set temperature, to the alternative electricity during shelving
Pond carries out the open-circuit voltage test of three minor ticks setting duration；
Wherein, the alternative battery is carried out to putting for three different set durations respectively under 15~60 DEG C of design temperature
Put, after each duration of completion is shelved, carry out open-circuit voltage test, and record battery open circuit voltage, wherein, the design temperature
Preferred value be 25 DEG C.
Step S130, the pressure drop tested based on adjacent open-circuit voltage twice, by the pressure drop reference value of setting to described alternative
Battery is screened；
Wherein, the pressure drop tested based on adjacent open-circuit voltage twice, by the pressure drop reference value of setting to described alternative
Battery is screened, including：
The pressure drop that first time open-circuit voltage is tested between second of open-circuit voltage test is more than the first pressure drop reference value
Battery be considered as self discharge big battery, and choose；
Pressure drop between second of open-circuit voltage test and the test of third time open-circuit voltage is more than the second pressure drop reference value
Battery be considered as self discharge big battery, and choose.
The operation principle of the lithium ion battery self discharge screening technique：Using lithium ion battery in low state-of-charge
Under, its voltage drastically changes with the change of capacity, i.e., when battery is under low state-of-charge, less volume change also may be used
Cause very big voltage change.Therefore, the big electricity of self discharge can accurately be filtered out by the battery pressure drop measured in certain time
Pond.
The technical scheme of the present embodiment, the open-circuit voltage of lithium ion battery under low state-of-charge is in by measuring, by setting
Constant pressure drop reference value is screened to battery, is solved under the conditions of partly filling or completely filling, and the cell voltage filtered out is identical, and capacity is but
The problem of differing larger, realize under normal temperature condition it is quick, efficiently and accurately filter out self discharge big battery.
Embodiment two
Fig. 3 is a kind of flow chart for lithium ion battery self discharge screening technique that the embodiment of the present invention two is provided, this implementation
Example is optimized on the basis of above-described embodiment one to its step S120 and S130.The lithium ion battery that the present embodiment is provided
Self discharge screening technique specifically includes following operation：
Step S210, to the constant-current charging of battery after partial volume to default state-of-charge, pick out cell voltage setting model
The alternative battery enclosed.
Step S221, the first time that the alternative battery is carried out into 30~40h at a set temperature shelve, and shelve for the first time
After the completion of carry out first time open-circuit voltage test；
Wherein, in first time open-circuit voltage test, writing circuit open-circuit voltage is designated as V1.
Step S222, the alternative battery is subjected to shelving for the second time for 40~72h at a set temperature, shelved for the second time
After the completion of carry out second of open-circuit voltage test；
Wherein, in second of open-circuit voltage test, writing circuit open-circuit voltage is designated as V2.
Step S223, the third time that the alternative battery is carried out into 90~120h at a set temperature are shelved, and are put for the third time
Third time open-circuit voltage test is carried out after the completion of putting；
Wherein, in third time open-circuit voltage test, writing circuit open-circuit voltage is designated as V3.
Step S231, the pressure drop for testing first time open-circuit voltage between second of open-circuit voltage test are more than the first pressure
The battery of drop reference value is considered as self discharge big battery, and chooses；
Wherein, the pressure drop between the first time open-circuit voltage test and second of open-circuit voltage test is designated as Vd1, i.e. Vd1
=V1-V2；The preferred value of the first pressure drop reference value is 7mV.
Step S232, the pressure drop for testing second of open-circuit voltage between the test of third time open-circuit voltage are more than the second pressure
The battery of drop reference value is considered as self discharge big battery, and chooses；
Wherein, the pressure drop between the test of second of open-circuit voltage and the test of third time open-circuit voltage is designated as Vd2, i.e. Vd2
=V2-V3；The preferred value of the second pressure drop reference value is 16mV.
The technical scheme of the present embodiment, the open-circuit voltage of lithium ion battery under low state-of-charge is in by measuring, by setting
Constant pressure drop reference value carries out self discharge big battery twice to battery and screened, and solves under the conditions of partly filling or completely filling, the electricity filtered out
Cell voltage is identical, the problem of capacity but differs larger, realize under normal temperature condition it is quick, efficiently and accurately screening come from and put
TV university battery.
Embodiment three
Fig. 4 is a kind of flow chart for lithium ion battery self discharge screening technique that the embodiment of the present invention three is provided, with to dynamic
Power battery is carried out exemplified by self discharge big battery screening, specifically includes following steps：
Step S310, the battery progress partial volume finished using predetermined current to chemical conversion, are determined after discharge capacity of the cell, with perseverance
Stream charges to default state-of-charge to battery, picks out alternative battery of the cell voltage in setting range；
Wherein, partial volume is carried out to battery using predetermined current, determines after discharge capacity of the cell, battery is entered with 0.3C constant currents
Row charging 10min, after charging is finished, the state-of-charge of battery is 5%, picks out cell voltage in the range of 3.10~3.20V
Alternative battery；
Wherein, partial volume process includes：Constant-current constant-voltage charging is carried out to battery using 0.3C~1C, blanking voltage is set to
3.65V；Using 0.3~1C constant-current discharges, blanking voltage is set to 2.5V；Using 0.05C constant-current discharges, blanking voltage is set to
2.0V。
Step S321, the first time that the alternative battery is carried out into 30~40h at a set temperature shelve, and shelve for the first time
After the completion of carry out first time open-circuit voltage test；
Wherein, in first time open-circuit voltage test, writing circuit open-circuit voltage is designated as V1.
Step S322, the alternative battery is subjected to shelving for the second time for 40~72h at a set temperature, shelved for the second time
After the completion of carry out second of open-circuit voltage test；
Wherein, in second of open-circuit voltage test, writing circuit open-circuit voltage is designated as V2.
Step S323, the third time that the alternative battery is carried out into 90~120h at a set temperature are shelved, and are put for the third time
Third time open-circuit voltage test is carried out after the completion of putting；
Wherein, in third time open-circuit voltage test, writing circuit open-circuit voltage is designated as V3.
Step S331, the pressure drop for testing first time open-circuit voltage between second of open-circuit voltage test are more than the first pressure
The battery of drop reference value is considered as self discharge big battery, and chooses；
Wherein, the pressure drop between the first time open-circuit voltage test and second of open-circuit voltage test is designated as Vd1, i.e. Vd1
=V1-V2, battery pressure drop Vd1Distribution it is as shown in Figure 5；The preferred value of the first pressure drop reference value is 7mV, as voltage drop value Vd1
During more than 7mV, the battery is considered as self discharge big battery, and is picked out.
Step S332, the pressure drop for testing second of open-circuit voltage between the test of third time open-circuit voltage are more than the second pressure
The battery of drop reference value is considered as self discharge big battery, and chooses；
Wherein, the pressure drop between the test of second of open-circuit voltage and the test of third time open-circuit voltage is designated as Vd2, i.e. Vd2
=V2-V3, battery pressure drop Vd2Distribution it is as shown in Figure 6；The preferred value of the second pressure drop reference value is 16mV, works as voltage drop value
Vd1During more than 16mV, the battery is considered as self discharge big battery, and is picked out.
The technical scheme of the present embodiment, the open-circuit voltage of lithium ion battery under low state-of-charge is in by measuring, by setting
Constant pressure drop reference value carries out self discharge big battery twice to battery and screened, and solves under the conditions of partly filling or completely filling, the electricity filtered out
Cell voltage is identical, the problem of capacity but differs larger, realize under normal temperature condition it is quick, efficiently and accurately screening come from and put
TV university battery.
Example IV
Fig. 7 is a kind of structural representation for Li-ion batteries piles that the embodiment of the present invention four is provided, in the present embodiment lithium from
The concrete structure of sub- battery pack 410 includes：Multiple battery cores 420；
Wherein, Li-ion batteries piles 410 are made up of multiple battery cores 420 (i.e. monomer lithium ion battery) connection in series-parallel
, in the figure 7, battery core 420 is only with series system, and battery core 420 is that lithium ion battery self discharge is screened in previous embodiment
Method screening combo is formed.
Battery core in above-mentioned Li-ion batteries piles is formed by the self discharge screening technique screening combo in previous embodiment, because
There is more preferable uniformity for the capacity of battery core and voltage that filter out, the service life of the lithium ion battery has obtained effectively prolonging
It is long.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art it is various it is obvious change,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of lithium ion battery self discharge screening technique, it is characterised in that including：
To the constant-current charging of battery after partial volume to default state-of-charge, alternative battery of the cell voltage in setting range is picked out；
The alternative battery is shelved at a set temperature, three minor ticks are carried out to the alternative battery during shelving
Set the open-circuit voltage test of duration；
The pressure drop tested based on adjacent open-circuit voltage twice, is screened by the pressure drop reference value of setting to the alternative battery.
2. according to the method described in claim 1, it is characterised in that described that the alternative battery is put at a set temperature
Put, the open-circuit voltage for carrying out three minor ticks setting duration to the alternative battery during shelving is tested, including：
The first time that the alternative battery is carried out into 30~40h at a set temperature is shelved, and is carried out after the completion of shelving for the first time
Open-circuit voltage test；
The alternative battery is subjected to shelving for the second time for 40~72h at a set temperature, is carried out after the completion of shelving for the second time
Second open circuit voltage tester；
The third time that the alternative battery is carried out into 90~120h at a set temperature is shelved, and is carried out after the completion of shelving for the third time
Three open-circuit voltage tests.
3. method according to claim 1 or 2, it is characterised in that the design temperature is 25 DEG C.
4. according to the method described in claim 1, it is characterised in that the partial volume includes：
Constant-current constant-voltage charging is carried out to battery using 0.3C~1C, blanking voltage is set to 3.65V；Using 0.3~1C constant-current discharges,
Blanking voltage is set to 2.5V；Using 0.05C constant-current discharges, blanking voltage is set to 2.0V.
5. method according to claim 1 or 2, it is characterised in that the pressure tested based on adjacent open-circuit voltage twice
Drop, is screened by the pressure drop reference value of setting to the alternative battery, including：
The pressure drop that first time open-circuit voltage is tested between second of open-circuit voltage test is more than the electricity of the first pressure drop reference value
Pond is considered as self discharge big battery, and chooses；
Pressure drop between second of open-circuit voltage test and the test of third time open-circuit voltage is more than to the electricity of the second pressure drop reference value
Pond is considered as self discharge big battery, and chooses.
6. method according to claim 5, it is characterised in that
The first pressure drop reference value is 7mV, and the second pressure drop reference value is 16mV.
7. according to the method described in claim 1, it is characterised in that the setting range of the cell voltage is 3.10~3.20V.
8. according to the method described in claim 1, it is characterised in that the default state-of-charge is 5%.
9. according to the method described in claim 1, it is characterised in that the positive pole of the battery is made up of LiFePO4, negative pole is
Graphite is constituted.
10. a kind of Li-ion batteries piles, it is characterised in that the battery core of the Li-ion batteries piles is by any one of claim 1~9
Described lithium ion battery self discharge screening technique screening combo is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509201.8A CN107219468A (en) | 2017-06-28 | 2017-06-28 | A kind of lithium ion battery self discharge screening technique and Li-ion batteries piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509201.8A CN107219468A (en) | 2017-06-28 | 2017-06-28 | A kind of lithium ion battery self discharge screening technique and Li-ion batteries piles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107219468A true CN107219468A (en) | 2017-09-29 |
Family
ID=59950524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710509201.8A Pending CN107219468A (en) | 2017-06-28 | 2017-06-28 | A kind of lithium ion battery self discharge screening technique and Li-ion batteries piles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107219468A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120940A (en) * | 2017-12-28 | 2018-06-05 | 佛山市实达科技有限公司 | A kind of lithium ion battery cell ageing and screening method |
| CN108169681A (en) * | 2017-12-12 | 2018-06-15 | 合肥国轩高科动力能源有限公司 | A kind of method for detecting the corrosion of lithium ion battery aluminum enclosure |
| CN108160531A (en) * | 2018-03-15 | 2018-06-15 | 惠州亿纬锂能股份有限公司 | A kind of self-discharge of battery method for separating |
| CN108387849A (en) * | 2018-04-20 | 2018-08-10 | 清华大学 | The rapid detection method and device of lithium ion battery self discharge |
| CN108459273A (en) * | 2018-02-28 | 2018-08-28 | 河南国能电池有限公司 | Battery core manufacture test method and device |
| CN108607820A (en) * | 2018-04-20 | 2018-10-02 | 桑顿新能源科技有限公司 | A kind of low electric consumable electric sieve choosing method of LiFePO4 battery core |
| CN109143103A (en) * | 2018-09-10 | 2019-01-04 | 惠州亿纬锂能股份有限公司 | A kind of calculation method of battery pressure drop |
| CN109482521A (en) * | 2018-10-30 | 2019-03-19 | 江苏双登富朗特新能源有限公司 | Improve the self discharge screening technique of lithium ion battery combo consistency |
| CN111781510A (en) * | 2020-06-09 | 2020-10-16 | 合肥国轩高科动力能源有限公司 | Method for screening abnormal self-discharge batteries |
| CN112379298A (en) * | 2020-11-03 | 2021-02-19 | 中国电力科学研究院有限公司 | Screening method and system for long-life timing battery |
| CN112379285A (en) * | 2020-10-30 | 2021-02-19 | 合肥国轩高科动力能源有限公司 | Battery pack self-discharge screening method |
| CN113125977A (en) * | 2021-02-23 | 2021-07-16 | 惠州市恒泰科技股份有限公司 | Lithium ion battery and self-discharge screening method thereof |
| CN116626518A (en) * | 2023-07-24 | 2023-08-22 | 江苏正力新能电池技术有限公司 | Battery self-discharge detection method and system |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117937A (en) * | 2011-01-12 | 2011-07-06 | 合肥国轩高科动力能源有限公司 | Self-discharge screening method for lithium ion phosphate battery |
| CN103008261A (en) * | 2012-12-24 | 2013-04-03 | 天津力神电池股份有限公司 | Method for sorting degrees of self-discharging of lithium ion batteries |
| CN103094635A (en) * | 2011-10-27 | 2013-05-08 | 广州鹏辉能源科技股份有限公司 | Method for improving stability of lithium iron phosphate battery |
| CN103296325A (en) * | 2013-06-04 | 2013-09-11 | 金能（唐海）电池制造有限公司 | Matching method of lithium-ion batteries |
| CN104037461A (en) * | 2014-06-16 | 2014-09-10 | 张晶晶 | Assembling method of automotive power lithium ion batteries |
| CN104316877A (en) * | 2014-01-09 | 2015-01-28 | 中航锂电（洛阳）有限公司 | Self-discharge detection method of lithium iron phosphate battery |
| CN104466277A (en) * | 2014-12-05 | 2015-03-25 | 江苏天鹏电源有限公司 | Self-discharging screening method of lithium ion battery |
| CN104950264A (en) * | 2015-06-26 | 2015-09-30 | 桐乡市众胜能源科技有限公司 | Method for testing self-discharge of lithium ion battery |
| CN104979597A (en) * | 2015-06-26 | 2015-10-14 | 桐乡市众胜能源科技有限公司 | Lithium ion battery self-discharge method |
| CN106257734A (en) * | 2015-06-17 | 2016-12-28 | 深圳市沃特玛电池有限公司 | A kind of lithium-ion-power cell method for group matching |
| CN106772109A (en) * | 2017-03-13 | 2017-05-31 | 湖北金泉新材料有限责任公司 | A kind of method for separating of self-discharge of battery performance |
-
2017
- 2017-06-28 CN CN201710509201.8A patent/CN107219468A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117937A (en) * | 2011-01-12 | 2011-07-06 | 合肥国轩高科动力能源有限公司 | Self-discharge screening method for lithium ion phosphate battery |
| CN103094635A (en) * | 2011-10-27 | 2013-05-08 | 广州鹏辉能源科技股份有限公司 | Method for improving stability of lithium iron phosphate battery |
| CN103008261A (en) * | 2012-12-24 | 2013-04-03 | 天津力神电池股份有限公司 | Method for sorting degrees of self-discharging of lithium ion batteries |
| CN103296325A (en) * | 2013-06-04 | 2013-09-11 | 金能（唐海）电池制造有限公司 | Matching method of lithium-ion batteries |
| CN104316877A (en) * | 2014-01-09 | 2015-01-28 | 中航锂电（洛阳）有限公司 | Self-discharge detection method of lithium iron phosphate battery |
| CN104037461A (en) * | 2014-06-16 | 2014-09-10 | 张晶晶 | Assembling method of automotive power lithium ion batteries |
| CN104466277A (en) * | 2014-12-05 | 2015-03-25 | 江苏天鹏电源有限公司 | Self-discharging screening method of lithium ion battery |
| CN106257734A (en) * | 2015-06-17 | 2016-12-28 | 深圳市沃特玛电池有限公司 | A kind of lithium-ion-power cell method for group matching |
| CN104950264A (en) * | 2015-06-26 | 2015-09-30 | 桐乡市众胜能源科技有限公司 | Method for testing self-discharge of lithium ion battery |
| CN104979597A (en) * | 2015-06-26 | 2015-10-14 | 桐乡市众胜能源科技有限公司 | Lithium ion battery self-discharge method |
| CN106772109A (en) * | 2017-03-13 | 2017-05-31 | 湖北金泉新材料有限责任公司 | A kind of method for separating of self-discharge of battery performance |
Non-Patent Citations (1)
| Title |
|---|
| 徐文娟 等: "磷酸铁锂电池自放电检测工艺研究", 《河南科技》 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169681A (en) * | 2017-12-12 | 2018-06-15 | 合肥国轩高科动力能源有限公司 | A kind of method for detecting the corrosion of lithium ion battery aluminum enclosure |
| CN108120940A (en) * | 2017-12-28 | 2018-06-05 | 佛山市实达科技有限公司 | A kind of lithium ion battery cell ageing and screening method |
| CN108459273B (en) * | 2018-02-28 | 2020-05-19 | 河南国能电池有限公司 | Battery cell delivery test method and device |
| CN108459273A (en) * | 2018-02-28 | 2018-08-28 | 河南国能电池有限公司 | Battery core manufacture test method and device |
| CN108160531B (en) * | 2018-03-15 | 2021-04-09 | 惠州亿纬锂能股份有限公司 | Battery self-discharge sorting method |
| CN108160531A (en) * | 2018-03-15 | 2018-06-15 | 惠州亿纬锂能股份有限公司 | A kind of self-discharge of battery method for separating |
| CN108607820A (en) * | 2018-04-20 | 2018-10-02 | 桑顿新能源科技有限公司 | A kind of low electric consumable electric sieve choosing method of LiFePO4 battery core |
| CN108387849A (en) * | 2018-04-20 | 2018-08-10 | 清华大学 | The rapid detection method and device of lithium ion battery self discharge |
| CN108387849B (en) * | 2018-04-20 | 2023-10-31 | 清华大学 | Method and device for rapidly detecting self-discharge of lithium ion battery |
| CN109143103A (en) * | 2018-09-10 | 2019-01-04 | 惠州亿纬锂能股份有限公司 | A kind of calculation method of battery pressure drop |
| CN109482521A (en) * | 2018-10-30 | 2019-03-19 | 江苏双登富朗特新能源有限公司 | Improve the self discharge screening technique of lithium ion battery combo consistency |
| CN111781510A (en) * | 2020-06-09 | 2020-10-16 | 合肥国轩高科动力能源有限公司 | Method for screening abnormal self-discharge batteries |
| CN112379285A (en) * | 2020-10-30 | 2021-02-19 | 合肥国轩高科动力能源有限公司 | Battery pack self-discharge screening method |
| CN112379298A (en) * | 2020-11-03 | 2021-02-19 | 中国电力科学研究院有限公司 | Screening method and system for long-life timing battery |
| CN112379298B (en) * | 2020-11-03 | 2023-11-03 | 中国电力科学研究院有限公司 | Screening method and system for long-life timing battery |
| CN113125977A (en) * | 2021-02-23 | 2021-07-16 | 惠州市恒泰科技股份有限公司 | Lithium ion battery and self-discharge screening method thereof |
| CN116626518A (en) * | 2023-07-24 | 2023-08-22 | 江苏正力新能电池技术有限公司 | Battery self-discharge detection method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107219468A (en) | A kind of lithium ion battery self discharge screening technique and Li-ion batteries piles | |
| CN107607874B (en) | The bikini screening technique of quick charge/discharge lithium ion battery | |
| CN104316877B (en) | A kind of self discharge detection method of ferric phosphate lithium cell | |
| CN105510847B (en) | The screening technique of lithium ion battery consistency | |
| CN104062594B (en) | Lithium-ion-power cell method for group matching | |
| CN104502859B (en) | The detection of battery charge amount and cell health state, diagnostic method | |
| CN103545567B (en) | A kind of method of quick sorting lithium ion battery | |
| CN102861726B (en) | Lithium secondary battery consistency screening method | |
| CN101388477B (en) | Fast charging method | |
| CN103316852B (en) | Battery selecting method | |
| CN106824831A (en) | A kind of manufacture method of the motive-power battery for improving lithium ion battery uniformity | |
| CN107991627A (en) | A kind of lithium ion battery self discharge grade stage division | |
| CN102944849A (en) | Rapid battery capacity detecting method for lithium ion batteries | |
| CN104741327A (en) | Dynamic consistent sorting method for lithium-ion power battery | |
| CN103048623B (en) | A kind of method of quick detection self discharge rate of lithium iron phosphate lithium-ion battery | |
| CN102903957B (en) | Method for rapidly screening self discharge of lithium iron phosphate battery | |
| CN109877064A (en) | A kind of method that batteries in parallel connection self discharge is quickly screened | |
| CN107617582B (en) | Echelon utilization screening and grouping method for power cells | |
| CN109663756A (en) | Battery core screening technique and medium based on self-discharge rate | |
| CN104577226B (en) | A kind of method for group matching improving power battery pack service life cycle | |
| CN103346358A (en) | Grouping method of lead-acid battery | |
| CN104979597A (en) | Lithium ion battery self-discharge method | |
| CN107452999A (en) | Amendment makes up the lithium ion battery fast charge method of voltage | |
| CN111505521A (en) | Method for testing storage life of lithium secondary battery in accelerated manner | |
| CN104991197A (en) | Lithium iron phosphate lithium ion battery self-discharge test method |
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: 20170929 |
|
| RJ01 | Rejection of invention patent application after publication |