CN203659947U - Vacuum sealing structure for lithium-ion power battery - Google Patents
Vacuum sealing structure for lithium-ion power battery Download PDFInfo
- Publication number
- CN203659947U CN203659947U CN201320701226.5U CN201320701226U CN203659947U CN 203659947 U CN203659947 U CN 203659947U CN 201320701226 U CN201320701226 U CN 201320701226U CN 203659947 U CN203659947 U CN 203659947U
- Authority
- CN
- China
- Prior art keywords
- seal
- lithium
- ion
- power cell
- cover board
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 14
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title abstract description 4
- 229910001416 lithium ion Inorganic materials 0.000 title abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 239000004411 aluminium Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000005060 rubber Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009776 industrial production Methods 0.000 abstract description 2
- 230000010261 cell growth Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003466 welding Methods 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
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a vacuum sealing structure for a lithium-ion power battery. The vacuum sealing structure comprises a battery cover board, wherein a vent hole is formed in the battery cover board; a first sealing body is embedded into the vent hole; a second sealing body penetrates into the first sealing body to be fixed and sealed. By adopting the vacuum sealing structure, rise of the manufacturing cost can be restrained as much as possible, expansion of the battery is restrained, the performance of the battery is improved, the operation is simple, the work efficiency is greatly improved, and the vacuum sealing structure is applicable to the requirements of large-scale industrial production.
Description
Technical field
The utility model relates to electrokinetic cell and manufactures field, especially a kind of lithium-ion-power cell vacuum seal structure.
Background technology
At present lithium ion battery sealing is that the battery recovery having carried out after exhaust is sealed under atmospheric pressure environment mostly, under the state in extraneous gas enters the housing of battery, seals.Although the gas that known lithium ion battery produces is little, but in the time of the actual use of battery, in the housing of battery, also produce gas,, the gas of this generation makes the pressure rise in battery container together with being originally present in the air in battery container, this internal pressure expands housing, thereby causes cell expansion.Separate predetermined distance at secondary cell and be set up in parallel in battery pack multiple and that form, may make the gap turn narrow between multiple batteries due to cell expansion, hinder flowing of the cooling air supplied with to this gap, thereby can not carry out suitably cooling.In addition, also there are the following problems, that is, be detained owing to producing gas between the electrode of inside battery, do not produce and discharge and recharge reaction, so may make battery performance reduce in this part.So that the pressure of enclosure interior becomes decompression state is vital.Suppress such cell expansion by reducing to be originally present in the air in battery container and the pressure of enclosure interior is remained on to the pressure forcing down than atmosphere, also considered following method,, sealing is for the opening of exhaust completely, and this opening uses cell arrangement being carried out under the state under reduced pressure atmosphere for exhaust to exhaust.The operations such as the sealing under reduced pressure atmosphere are the so simple operations of opening by seal member being arranged on to housing, also very difficult compared with the operation of carrying out under atmospheric pressure, need to be with the appliance arrangement that carries out such operation, cause manufacturing cost to rise, thus exist in fact can not volume production problem.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of lithium-ion-power cell vacuum seal structure that suppresses can suppress when manufacturing cost rises cell expansion.
For solving the problems of the technologies described above, the technical solution of the utility model is:
Comprise battery cover board, battery cover board arranges steam vent, it is characterized in that: the first seal embeds described steam vent, and the second seal penetrates the first seal and is fixed sealing.
Preferably, on described battery cover board, exhaust outlet is stepped shape, and battery cover board entirety material is aluminium or stainless steel.
Preferably, described the first seal top is circular, and the first seal bottom is reducing cylinder, in the middle of described the first seal, is provided with connecting hole.
Preferably, the reducing cylinder outer peripheral face of described the first seal is provided with camber steam vent, and the length that camber exhaust lacks hole is less than the cylindrical height of reducing.
Preferably, the degree of depth of described connecting hole is less than or equal to the total height of the first seal.
Preferably, the material of described the first seal is rubber, resin, PP or PE material.
Preferably, described the second seal is nail type, and the second seal top is circular metal plate, and the second seal bottom is metal cylinder, and the connecting hole of metal cylinder and the first seal adopts interference fit, and overall material is aluminium or stainless steel.
The utility model structure has following beneficial effect:
Above-mentioned lithium-ion-power cell vacuum seal structure, enough risings that suppresses as much as possible manufacturing cost, suppress the generation of cell expansion, improve battery performance, and operating efficiency simple to operate improves greatly, are applicable to the needs of large-scale industrial production.
Accompanying drawing explanation
Fig. 1 is the utility model battery cover board and the first sealed body structure schematic diagram one;
Fig. 2 is the utility model battery cover board and the first sealed body structure schematic diagram two;
Fig. 3 is the utility model structural representation;
Fig. 4 is the utility model the first sealed body structure schematic diagram;
Fig. 5 is the utility model structural perspective.
In figure: 1-battery cover board 2-stairstepping steam vent 3-first seal 4-arc-like rows pore 5-connecting hole 6-the second seal 7-metal cylinder.
Embodiment
For further illustrating the utility model, now coordinate accompanying drawing to be described in detail:
As Figure 1-5, the utility model comprises battery cover board 1, and battery cover board arranges steam vent 2, the first seals 3 and embeds described steam vent, and the second seal 6 penetrates the first seal and is fixed sealing.On described battery cover board, exhaust outlet is stepped shape, and battery cover board entirety material is aluminium or stainless steel.Described the first seal top is circular, and the first seal bottom is reducing cylinder, in the middle of described the first seal, is provided with connecting hole 5.The reducing cylinder outer peripheral face of described the first seal is provided with camber steam vent 4, and the length that camber exhaust lacks hole is less than the cylindrical height of reducing.The degree of depth of described connecting hole is less than or equal to the total height of the first seal.The material of described the first seal is rubber, resin, PP or PE material.Described the second seal is nail type, and the second seal top is circular metal plate, and the second seal bottom is metal cylinder, and the connecting hole of metal cylinder and the first seal adopts interference fit, and overall material is aluminium or stainless steel.
The using method of above-mentioned lithium-ion-power cell vacuum seal structure:
(1) the first seal 3 is inserted and finished in the ladder steam vent 2 of the battery after exhaust (changing in advance) operation, then battery being put into vacuum equipment casing vacuumizes, air pressure becomes negative pressure from positive atmospheric pressure gradually, and when cell internal pressure is higher than the pressure of battery outer (battery container is outer), the gas of inside battery is discharged gradually by arc-like rows pore 4; In the time that vacuum equipment casing internal pressure returns to normal atmosphere (An) gradually, when cell internal pressure is lower than ambient pressure (atmospheric pressure), the first seal 3 can be attracted to downwards without arc-like rows pore place, thereby make inside battery form vacuum seal state.
(2) battery under vacuum seal state is taken out, the metal cylinder 7 of the second seal 6 is inserted in the connecting hole 5 of the first seal 3, owing to adopting Interference size to coordinate, the first seal 3 can be subject to the pressure of metal cylinder 7 and produce elastic expansion, make steam vent 2 combinations tightr of itself and battery cover board, the second seal 6 also can firmly be fixed on the first seal 3 simultaneously, play positioning action, finally use laser welding that the second seal 6 is welded with battery cover board 1, finally realize firmly vacuum seal.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. a lithium-ion-power cell vacuum seal structure, comprises battery cover board, and battery cover board arranges steam vent, it is characterized in that: the first seal embeds described steam vent, and the second seal penetrates the first seal and is fixed sealing.
2. lithium-ion-power cell vacuum seal structure according to claim 1, is characterized in that: on described battery cover board, exhaust outlet is stepped shape, and battery cover board entirety material is aluminium or stainless steel.
3. lithium-ion-power cell vacuum seal structure according to claim 1, is characterized in that: described the first seal top is for circular, and the first seal bottom is reducing cylinder, in the middle of described the first seal, is provided with connecting hole.
4. according to the lithium-ion-power cell vacuum seal structure described in claim 1,2 or 3, it is characterized in that: the reducing cylinder outer peripheral face of described the first seal is provided with camber steam vent, the length that camber exhaust lacks hole is less than the cylindrical height of reducing.
5. lithium-ion-power cell vacuum seal structure according to claim 3, is characterized in that: the degree of depth of described connecting hole is less than or equal to the total height of the first seal.
6. lithium-ion-power cell vacuum seal structure according to claim 1, is characterized in that: the material of described the first seal is rubber, resin, PP or PE material.
7. lithium-ion-power cell vacuum seal structure according to claim 1, it is characterized in that: described the second seal is nail type, the second seal top is circular metal plate, and the second seal bottom is metal cylinder, and the connecting hole of metal cylinder and the first seal adopts interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320701226.5U CN203659947U (en) | 2013-11-08 | 2013-11-08 | Vacuum sealing structure for lithium-ion power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320701226.5U CN203659947U (en) | 2013-11-08 | 2013-11-08 | Vacuum sealing structure for lithium-ion power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203659947U true CN203659947U (en) | 2014-06-18 |
Family
ID=50926301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320701226.5U Expired - Lifetime CN203659947U (en) | 2013-11-08 | 2013-11-08 | Vacuum sealing structure for lithium-ion power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203659947U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111192990A (en) * | 2020-01-23 | 2020-05-22 | 星恒电源股份有限公司 | Safety valve structure for lithium battery |
| DE102019201021A1 (en) * | 2019-01-28 | 2020-08-13 | Volkswagen Aktiengesellschaft | Battery with a seal acting by means of a pressure difference |
-
2013
- 2013-11-08 CN CN201320701226.5U patent/CN203659947U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019201021A1 (en) * | 2019-01-28 | 2020-08-13 | Volkswagen Aktiengesellschaft | Battery with a seal acting by means of a pressure difference |
| CN111192990A (en) * | 2020-01-23 | 2020-05-22 | 星恒电源股份有限公司 | Safety valve structure for lithium battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220211 Address after: 266500 Minshan Road, Huangdao District, Qingdao, Shandong Patentee after: LISHEN (QINGDAO) NEW ENERGY CO.,LTD. Address before: 300384 No. 6, Lanyuan Road, Huayuan Industrial Zone, Binhai high tech Industrial Development Zone, Xiqing District, Tianjin Patentee before: TIANJIN LISHEN BATTERY JOINT-STOCK Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |