CN102299272A - Battery and liquid injection method - Google Patents
Battery and liquid injection method Download PDFInfo
- Publication number
- CN102299272A CN102299272A CN2011102285079A CN201110228507A CN102299272A CN 102299272 A CN102299272 A CN 102299272A CN 2011102285079 A CN2011102285079 A CN 2011102285079A CN 201110228507 A CN201110228507 A CN 201110228507A CN 102299272 A CN102299272 A CN 102299272A
- Authority
- CN
- China
- Prior art keywords
- battery
- liquid injection
- fluid injection
- safe valve
- injection hole
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims abstract description 81
- 239000007924 injection Substances 0.000 title claims abstract description 81
- 239000007788 liquid Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000012530 fluid Substances 0.000 claims description 45
- 239000003792 electrolyte Substances 0.000 claims description 22
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008595 infiltration Effects 0.000 abstract 1
- 238000001764 infiltration Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Filling, Topping-Up Batteries (AREA)
Abstract
The invention discloses a battery and a liquid injection method, wherein the battery comprises a battery roll core, a shell wrapped outside the battery roll core, an end cover covering the upper part of the shell, a safety valve hole and a liquid injection hole, wherein the safety valve hole is arranged on the end cover, and the liquid injection hole is arranged at the lower part of the shell. The battery of the invention is provided with the safety valve hole on the end cover of the battery and the liquid injection hole on the lower part of the battery shell. When liquid is injected into the battery, the safety valve hole is vacuumized, and liquid is injected from the liquid injection hole at the bottom of the battery. The liquid injection efficiency of the battery is obviously improved, and the liquid injection mode of injecting liquid from the bottom of the battery and vacuumizing the upper part of the battery is adopted, so that air bubbles in the battery are reduced, the infiltration effect of a battery roll core is good, and the battery capacity of the battery is greatly improved. The liquid injection method provided by the invention effectively shortens the liquid injection time, improves the working efficiency, ensures that the battery roll core is soaked more thoroughly, can discharge bubbles between the pole pieces and improves the battery capacity.
Description
Technical field
The present invention relates to the battery technology field, be specifically related to a kind of battery and electrolyte filling method thereof with safety valve and liquid injection hole.
Background technology
At present common battery has various forms, as sealing fully, the band safety valve, with the liquid injection hole of repeatedly fluid injection, and have safety valve and liquid injection hole simultaneously.Existing have its safety valve of battery of safety valve and liquid injection hole and the top that liquid injection hole all is arranged on battery simultaneously, there is the negative pressure method in manufacturer at the injecting electrolytic solution method that this battery adopts at present, positive platen press, positive negative pressure mixing method, centrifugal process and vibration method etc., these electrolyte filling methods all are the modes from the downward fluid injection in battery top, this top-down fluid injection mode causes the bubble of electric in-core portion to be difficult for discharging easily, and in the process of fluid injection, also easily form new bubble, thereby it is not thorough to cause electrolyte to soak into, battery capacity reduces, and fluid injection speed is also slower.
Summary of the invention
The object of the present invention is to provide a kind of battery with safety valve and liquid injection hole.
Simultaneously, the present invention also aims to provide a kind of electrolyte filling method of battery.
In order to realize above purpose, the technical solution adopted in the present invention is: a kind of battery, comprise battery roll core, be packaged in the housing of battery roll core outside and the end cap that lid is located at housing top, also comprise safe valve opening and liquid injection hole, described safe valve opening is arranged on the described end cap, and described liquid injection hole is arranged on lower part of frame.
Further, described safe valve opening is provided with safe valve gap.
Described liquid injection hole is provided with the fluid injection port lid.Described liquid injection hole can be circular, square or rectangle.
A kind of electrolyte filling method of battery may further comprise the steps:
(1) battery that will treat fluid injection places dry air or nitrogen atmosphere, takes off safe valve gap, and safe valve opening is communicated with vacuum line;
(2) the fluid injection port lid with described battery takes off, and liquid injection hole is communicated with the fluid injection jar and will guarantees that the sealing that is communicated with is good;
(3) add electrolyte in the fluid injection jar, the amount of the electrolyte of interpolation is the amount that is full of the required electrolyte of battery;
(4) by vacuum line described inside battery is vacuumized, when vacuumizing by liquid injection hole to the inside battery fluid injection, when the vacuum degree of inside battery reach-stop to vacuumize behind the 0.1MPa, and keep that this vacuum degree is constant to finish until fluid injection;
(5) after fluid injection finishes, load onto safe valve gap and fluid injection port lid, take out battery.
Further, the dew point of described dry air is-80 ℃～-50 ℃.
The bottom of described fluid injection jar far from the height on ground greater than the height of described battery top far from ground.
Battery provided by the invention is provided with safe valve opening on the end cap of battery, be provided with liquid injection hole in the bottom of battery container.When fluid injection in battery, vacuumize from the safety valve opening, simultaneously from the liquid injection hole fluid injection of battery bottom.The fluid injection efficient of this battery significantly improves, and owing to adopt from the battery bottom fluid injection, and therefore the fluid injection mode that top vacuumizes has reduced the bubble of inside battery, and the effect of impregnation may of battery roll core is good, has improved the battery capacity of battery greatly.
The liquid injection hole of battery of the present invention fluid injection finish load onto the fluid injection port lid after, all must not open in any case, safe valve opening can be opened in appropriate circumstances, and pressure release is carried out in the hole that can open the safety-valve when excessive as inside battery air pressure, covers safe valve gap after pressure release finishes again.The security performance of battery of the present invention improves greatly.
Provided by the invention from the battery bottom fluid injection, the electrolyte filling method that vacuumizes from top has the following advantages simultaneously: can effectively shorten the fluid injection time, increase work efficiency; Because from the bottom fluid injection, therefore can allow electrolyte upwards soak into gradually from battery bottom, it is more thorough to allow battery roll core soak into, and can discharge the bubble between pole piece and the pole piece, improving battery capacity, is example with the 180AHA battery, adopt new electrolyte filling method after, the battery actual capacity was promoted to 203AHA by former average 200AHA, and effect is very obvious.
Description of drawings
The structural representation of a kind of battery that Fig. 1 provides for the embodiment of the invention 1;
The fluid injection view of the battery that Fig. 2 provides for the embodiment of the invention 1.
Embodiment
As shown in Figure 1, a kind of battery that present embodiment provides comprises battery roll core 5, is packaged in the housing 4 of battery roll core 5 outsides and the end cap 3 that lid is located at housing 4 tops, also comprises safe valve opening 2 and liquid injection hole 6, safe valve opening 2 is arranged on the end cap 3, and liquid injection hole 6 is arranged on the bottom of housing 4.Safe valve opening 2 is provided with safe valve gap 1, and liquid injection hole 6 is provided with fluid injection port lid 7.
As shown in Figure 2, the electrolyte filling method of the battery that present embodiment provides, concrete steps are as follows:
(1) battery being placed dew point is-50 ℃ dry air, takes off safe valve gap 1, and safe valve opening 2 is communicated with vacuum line 8;
(2) the fluid injection port lid 7 with battery takes off, liquid injection hole 6 is communicated with fluid injection jar 9 and the sealing that guarantees to be communicated with good, the bottom that also will guarantee fluid injection jar 9 far from the height on ground greater than the height of battery top far from ground;
(3) add electrolyte in fluid injection jar 9, the amount of the electrolyte of interpolation is the amount that is full of the required electrolyte of battery;
(4) vacuumize by 8 pairs of inside batteries of vacuum line, when vacuumizing by liquid injection hole 6 to the inside battery fluid injection, when the vacuum degree of inside battery reach-stop to vacuumize behind the 0.1MPa, and keep that this vacuum degree is constant to finish until fluid injection;
(5) after fluid injection finishes, load onto safe valve gap 1 and fluid injection port lid 7, take out battery.
Claims (7)
1. battery, comprise battery roll core, be packaged in the housing of battery roll core outside and the end cap that lid is located at housing top, it is characterized in that, also comprise safe valve opening and liquid injection hole, described safe valve opening is arranged on the described end cap, and described liquid injection hole is arranged on lower part of frame.
2. battery according to claim 1 is characterized in that, described safe valve opening is provided with safe valve gap.
3. battery according to claim 1 is characterized in that described liquid injection hole is provided with the fluid injection port lid.
4. according to claim 1 or 3 described batteries, it is characterized in that described liquid injection hole is circular, square or rectangle.
5. the electrolyte filling method of the described battery of claim 1 is characterized in that, may further comprise the steps:
(1) battery that will treat fluid injection places dry air or nitrogen atmosphere, takes off safe valve gap, and safe valve opening is communicated with vacuum line;
(2) the fluid injection port lid with described battery takes off, and liquid injection hole is communicated with the fluid injection jar;
(3) add electrolyte in the fluid injection jar, the amount of the electrolyte of interpolation is the amount that is full of the required electrolyte of battery;
(4) by vacuum line described inside battery is vacuumized, when vacuumizing by liquid injection hole to the inside battery fluid injection, when the vacuum degree of inside battery reach-stop to vacuumize behind the 0.1MPa, and keep that this vacuum degree is constant to finish until fluid injection;
(5) after fluid injection finishes, load onto safe valve gap and fluid injection port lid, take out battery.
6. the electrolyte filling method of battery according to claim 5 is characterized in that, the dew point of described dry air is-80 ℃～-50 ℃.
7. the electrolyte filling method of battery according to claim 5 is characterized in that, the bottom of described fluid injection jar far from the height on ground greater than the height of described battery top far from ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110228507.9A CN102299272B (en) | 2011-08-10 | 2011-08-10 | Battery and liquid injection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110228507.9A CN102299272B (en) | 2011-08-10 | 2011-08-10 | Battery and liquid injection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102299272A true CN102299272A (en) | 2011-12-28 |
| CN102299272B CN102299272B (en) | 2014-06-18 |
Family
ID=45359547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110228507.9A Active CN102299272B (en) | 2011-08-10 | 2011-08-10 | Battery and liquid injection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102299272B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247775A (en) * | 2013-05-02 | 2013-08-14 | 深圳市力德科技有限公司 | Liquid filling method for flexible package lithium ion battery |
| CN106981689A (en) * | 2016-12-27 | 2017-07-25 | 超威电源有限公司 | A kind of solid sour battery of absorptive separator and its efficient internal formation process |
| CN105977443B (en) * | 2016-06-01 | 2018-11-06 | 中航锂电（洛阳）有限公司 | A kind of electrolyte filling method of lithium ion battery |
| CN110896155A (en) * | 2018-09-13 | 2020-03-20 | 深圳格林德能源有限公司 | Process for improving electrolyte infiltration of lithium ion battery |
| CN111354919A (en) * | 2020-04-01 | 2020-06-30 | 湖北亿纬动力有限公司 | Battery, liquid injection method of battery and battery module |
| CN111883821A (en) * | 2020-08-02 | 2020-11-03 | 江西安驰新能源科技有限公司 | Square lithium ion battery and liquid injection process thereof |
| CN112290169A (en) * | 2020-03-31 | 2021-01-29 | 蜂巢能源科技有限公司 | Lithium ion battery liquid injection device and method |
| CN112350037A (en) * | 2020-11-27 | 2021-02-09 | 江西安驰新能源科技有限公司 | High-efficiency liquid injection device for lithium ion battery and battery liquid injection method thereof |
| CN112736376A (en) * | 2021-01-27 | 2021-04-30 | 湖北亿纬动力有限公司 | Liquid injection device and liquid injection method for battery |
| CN112886155A (en) * | 2021-03-15 | 2021-06-01 | 贵州中瑞丰泰新能源科技有限公司 | Battery structure with liquid injection from bottom and battery liquid injection method |
| CN114586224A (en) * | 2020-05-14 | 2022-06-03 | 宁德时代新能源科技股份有限公司 | End cap assembly, secondary battery, battery pack and device using battery |
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| CN101350427A (en) * | 2008-07-09 | 2009-01-21 | 广州丰江电池新技术有限公司 | Method for manufacturing lithium secondary battery |
| CN201789002U (en) * | 2010-06-29 | 2011-04-06 | 上海比亚迪有限公司 | Lithium-ion secondary battery |
| CN201877474U (en) * | 2010-12-08 | 2011-06-22 | 北京普莱德新能源电池科技有限公司 | Square lithium ion power battery structure |
| CN202183438U (en) * | 2011-08-10 | 2012-04-04 | 中航锂电（洛阳）有限公司 | Battery |
-
2011
- 2011-08-10 CN CN201110228507.9A patent/CN102299272B/en active Active
Patent Citations (4)
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| CN101350427A (en) * | 2008-07-09 | 2009-01-21 | 广州丰江电池新技术有限公司 | Method for manufacturing lithium secondary battery |
| CN201789002U (en) * | 2010-06-29 | 2011-04-06 | 上海比亚迪有限公司 | Lithium-ion secondary battery |
| CN201877474U (en) * | 2010-12-08 | 2011-06-22 | 北京普莱德新能源电池科技有限公司 | Square lithium ion power battery structure |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247775A (en) * | 2013-05-02 | 2013-08-14 | 深圳市力德科技有限公司 | Liquid filling method for flexible package lithium ion battery |
| CN105977443B (en) * | 2016-06-01 | 2018-11-06 | 中航锂电（洛阳）有限公司 | A kind of electrolyte filling method of lithium ion battery |
| CN106981689A (en) * | 2016-12-27 | 2017-07-25 | 超威电源有限公司 | A kind of solid sour battery of absorptive separator and its efficient internal formation process |
| CN110896155A (en) * | 2018-09-13 | 2020-03-20 | 深圳格林德能源有限公司 | Process for improving electrolyte infiltration of lithium ion battery |
| CN112290169A (en) * | 2020-03-31 | 2021-01-29 | 蜂巢能源科技有限公司 | Lithium ion battery liquid injection device and method |
| CN111354919A (en) * | 2020-04-01 | 2020-06-30 | 湖北亿纬动力有限公司 | Battery, liquid injection method of battery and battery module |
| CN114586224A (en) * | 2020-05-14 | 2022-06-03 | 宁德时代新能源科技股份有限公司 | End cap assembly, secondary battery, battery pack and device using battery |
| CN114586224B (en) * | 2020-05-14 | 2024-04-26 | 宁德时代新能源科技股份有限公司 | End cap assembly, secondary battery, battery pack, and device using battery |
| CN111883821A (en) * | 2020-08-02 | 2020-11-03 | 江西安驰新能源科技有限公司 | Square lithium ion battery and liquid injection process thereof |
| CN112350037A (en) * | 2020-11-27 | 2021-02-09 | 江西安驰新能源科技有限公司 | High-efficiency liquid injection device for lithium ion battery and battery liquid injection method thereof |
| CN112736376A (en) * | 2021-01-27 | 2021-04-30 | 湖北亿纬动力有限公司 | Liquid injection device and liquid injection method for battery |
| CN112886155A (en) * | 2021-03-15 | 2021-06-01 | 贵州中瑞丰泰新能源科技有限公司 | Battery structure with liquid injection from bottom and battery liquid injection method |
| CN112886155B (en) * | 2021-03-15 | 2023-10-20 | 贵州中瑞丰泰新能源科技有限公司 | Battery structure capable of injecting liquid from bottom and battery liquid injection method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102299272B (en) | 2014-06-18 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160303 Address after: 213299 Jintan Road, Jintan District, Jiangsu, No. 88, No. Patentee after: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. Address before: 471003 Henan high tech Zone in Luoyang City, Spring City Road No. 16 Patentee before: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 213200 Jiangdong Avenue 1, Jintan District, Jiangsu, Changzhou Patentee after: AVIC lithium Technology Co.,Ltd. Address before: 213299 No. 88, Jintan Avenue, Jintan District, Jiangsu, Changzhou Patentee before: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee after: Zhongchuangxin Aviation Technology Co.,Ltd. Address before: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee before: AVIC lithium Technology Co.,Ltd. Address after: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee after: AVIC lithium Technology Co.,Ltd. Address before: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee before: AVIC lithium Technology Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220426 Address after: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee after: Zhongchuangxin Aviation Technology (Jiangsu) Co.,Ltd. Address before: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee before: Zhongchuangxin Aviation Technology Co.,Ltd. |