CN2747711Y - Lithium iron cell cover with valve polar column - Google Patents
Lithium iron cell cover with valve polar column Download PDFInfo
- Publication number
- CN2747711Y CN2747711Y CN 200420085440 CN200420085440U CN2747711Y CN 2747711 Y CN2747711 Y CN 2747711Y CN 200420085440 CN200420085440 CN 200420085440 CN 200420085440 U CN200420085440 U CN 200420085440U CN 2747711 Y CN2747711 Y CN 2747711Y
- Authority
- CN
- China
- Prior art keywords
- pole
- hole
- ion battery
- valve
- lithium
- 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 - Fee Related
Links
Classifications
-
- Y02E60/12—
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model belongs to the technical field of a lithium iron cell cover with valve polar column, comprising a cover body and a polar column which is fixedly connected with the cover body in an insulated way through an insulation pad. The polar column is provided with a one-way valve, and the one-way valve is that a step blind hole with the diameter of an upper end hole greater than the diameter of a lower end hole is arranged at the axial center of the polar column. The bottom of the lower end hole is provided with a through hole whose diameter is smaller than the diameter of the lower end hole and the through hole is communicated with the lower end hole, and a ball, a spring and an enclosed connecting piece with a hole are provided orderly from bottom to top in the step blind hole. The utility model has high assurance coefficient, the cell has long service life, and the utility model is suitable for big capacity lithium ion cell for a motor-driven bicycle, an electric automobile, etc.
Description
Technical field
The utility model belongs to a kind of lithium-ion battery technical field, particularly relates to a kind of lithium-ion battery that has valve formula pole.
Background technology
At present, the high-capacity lithium-ion storage battery adopts the membrane type safety valve that breaks with battery cover.Its structure is: safety valve is welded on the lid, pole be welded on the dowel fixes that has insulating case on the lid.Normal condition, the gas that produces when inside battery are during greater than preset pressure, and fracturing diaphragm breaks, and emission gases guarantees the fail safe of battery, but battery can not continue to use, cause waste; If cell internal pressure is greater than preset pressure, and fracturing diaphragm is not when breaking, and gas causes battery explosion because of can not in time discharging, and brings massive losses; The wearing and tearing that can cause the pin insulating case that relatively rotate owing between lid and the pole cause potential safety hazard equally.
Practical fresh content
The utility model is for solving problems of the prior art, and provide a kind of can regulating cell internal preset pressure, the danger that prevents overvoltage gas from can not in time discharge and bring, and behind gaseous emission greater than preset pressure, the lithium-ion battery that has valve formula pole that battery still can continue to use.
The utility model for solving the technical scheme that technical problem adopted that exists in the known technology is:
The lithium-ion battery that has valve formula pole, comprise lid and the pole of fixedlying connected with described lid insulation by insulation cushion, it is characterized in that: described pole is provided with unidirectional valve, described unidirectional valve is provided with the step blind hole of aperture, upper end greater than the aperture, lower end for the pole axle center, the bottom of described down stomidium is provided with the aperture less than aperture, lower end and the through hole that communicates with following stomidium, is disposed with ball, spring in the step blind hole from bottom to top and has the connector that seals in hole.
The utility model can also adopt following technical measures to realize:
The lithium-ion battery that has valve formula pole, the connecting portion that is characterized in lid and pole is a polygon.
The lithium-ion battery that has valve formula pole, the connecting portion that is characterized in lid and pole is square.
The lithium-ion battery that has valve formula pole is characterized in that the upper end is threaded post.
The lithium-ion battery that has valve formula pole is characterized in that upper end hole is the part internal thread hole.
The lithium-ion battery that has valve formula pole is characterized in sealing connector for sealing screw.
The lithium-ion battery that has valve formula pole is characterized in that ball is a ceramic balls.
The lithium-ion battery that has valve formula pole is characterized in that spring is the stainless steel pressure spring.
Advantage and the good effect that the utlity model has are: sealing screw battery control spring by adjusting can the regulating cell preset pressure, has improved the safe precision of battery, guarantees the fail safe of battery; Behind gaseous emission greater than preset pressure, because ball and battery spring can be got back to the exhaust front position, make that battery still can continue to use, prolonged the useful life of battery; Because the connecting portion of lid and pole is a polygon, can not rotate between lid and the pole, can not cause insulating part because of wearing and tearing between lid and pole because of rotating mutually, can prevent the potential safety hazard that lid and pole short circuit cause.
Description of drawings
Fig. 1 is a kind of cutaway view that has the lithium-ion battery of valve formula pole of the utility model embodiment.
Fig. 2 has the lid of lithium-ion battery of valve formula pole and the battery cover outline drawing that the pole connecting portion is analysed and observe for the utility model embodiment a kind of.
Label among the figure is respectively: 1 is pole, and 2 is nut, and 3 is pad, and 4 is the external insulation pad, and 5 is lid, and 6 is interior insulation cushion, and 7 is square position, and 8 for sealing screw, and 9 is spring, and 10 is unidirectional valve, and 11 is ball, and 12 is through hole, and 13 is liquid injection hole.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, enumerate following examples now, and conjunction with figs. is described in detail as follows:
Please refer to Fig. 1 and Fig. 2: be processed into thread spindle with lathe in battery electrode column 1 cylindrical upper end, the part that cooperates with lid 3 is processed into and interior insulation cushion 6 friction tight square positions 7, and 7 lower ends, square position are step cutting pattern; Step circular hole of battery electrode column 1 center processing, this hole is a blind hole, the aperture, lower end of stepped hole is less than the aperture, upper end, upper end hole is the part internal thread hole, according to the battery size difference, the length of threaded portion is enough to make seals screw 8 and turns to the maximal regulated limit, following stomidium bottom is run through circular hole 12 and is communicated with one, to move the ceramic balls 11 that cooperates with following stomidium and put into the ladder circular hole, by stainless steel spring 9 ceramic balls 11 is pressed in down the stomidium bottom, make down stomidium and run through circular hole 12 partitions, keep pole 1 sealing state.Process a square opening with lathe in the center of the lithium ion battery lid 5 that has liquid injection hole 13, to have step, and inside and outside all be square interior insulation cushion 6 from bottom to top tight fit pack in the square opening of lid 5, again pole 1 is therefrom passed, the square position 7 of pole 1 coincide with the square inner bore of interior insulation cushion 6, on the threaded post of pole 1, put external insulation pad 4 then successively, pad 3, nut 2, pass through pressure device, screw 8 is sealed in adjusting, and to form a sealing behind the specified pressure intact, pole can not rotate on lid, can be according to circumstances freely unlatching and sealing, guarantee cell safety, can abandon the lithium-ion battery that has unidirectional valve 10 formula poles that use is continued in the back.
Claims (8)
1. lithium-ion battery that has valve formula pole, comprise lid and the pole of fixedlying connected with described lid insulation by insulation cushion, it is characterized in that: described pole is provided with unidirectional valve, described unidirectional valve is provided with the step blind hole of aperture, upper end greater than the aperture, lower end for the pole axle center, the bottom of described down stomidium is provided with the aperture less than aperture, lower end and the through hole that communicates with following stomidium, is disposed with ball, spring in the step blind hole from bottom to top and has the connector that seals in hole.
2. according to the described lithium-ion battery that has valve formula pole of claim 1, it is characterized in that: the connecting portion of described lid and described pole is a polygon.
3. according to the described lithium-ion battery that has valve formula pole of claim 2, it is characterized in that: the connecting portion of described lid and described pole is square.
4. according to the described lithium-ion battery that has valve formula pole of claim 1, it is characterized in that: described upper end is a threaded post.
5. according to the described lithium-ion battery that has valve formula pole of claim 1, it is characterized in that: described upper end hole is the part internal thread hole.
6. according to the described lithium-ion battery that has valve formula pole of claim 1, it is characterized in that: the described connector that seals is for sealing screw.
7. according to the described lithium-ion battery that has valve formula pole of claim 1, it is characterized in that: described ball is a ceramic balls.
8. according to the described lithium-ion battery that has valve formula pole of claim 1, it is characterized in that: described spring is the stainless steel pressure spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420085440 CN2747711Y (en) | 2004-11-22 | 2004-11-22 | Lithium iron cell cover with valve polar column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420085440 CN2747711Y (en) | 2004-11-22 | 2004-11-22 | Lithium iron cell cover with valve polar column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2747711Y true CN2747711Y (en) | 2005-12-21 |
Family
ID=35708251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420085440 Expired - Fee Related CN2747711Y (en) | 2004-11-22 | 2004-11-22 | Lithium iron cell cover with valve polar column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2747711Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280597A (en) * | 2011-06-29 | 2011-12-14 | 深圳市科达利实业股份有限公司 | High-capacity power lithium battery and sealing plate thereof |
| CN108364783A (en) * | 2017-12-29 | 2018-08-03 | 安徽瀚宇电气有限公司 | A kind of locomotive capacitor for protecting shell and column cap |
-
2004
- 2004-11-22 CN CN 200420085440 patent/CN2747711Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280597A (en) * | 2011-06-29 | 2011-12-14 | 深圳市科达利实业股份有限公司 | High-capacity power lithium battery and sealing plate thereof |
| CN102280597B (en) * | 2011-06-29 | 2015-11-25 | 深圳市科达利实业股份有限公司 | Large-capacity power lithium battery and hush panel thereof |
| CN108364783A (en) * | 2017-12-29 | 2018-08-03 | 安徽瀚宇电气有限公司 | A kind of locomotive capacitor for protecting shell and column cap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051221 Termination date: 20101122 |