CN1168542A - Cap assembly of secondary batteries - Google Patents
Cap assembly of secondary batteries Download PDFInfo
- Publication number
- CN1168542A CN1168542A CN97110505A CN97110505A CN1168542A CN 1168542 A CN1168542 A CN 1168542A CN 97110505 A CN97110505 A CN 97110505A CN 97110505 A CN97110505 A CN 97110505A CN 1168542 A CN1168542 A CN 1168542A
- Authority
- CN
- China
- Prior art keywords
- battery
- cap assembly
- cap
- assembly according
- steam vent
- 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
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- 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
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
Disclosed is a cover component of a secondary battery, which is provided with a semi-permeable film. The semi-permeable film is arranged between a pressure regulating component and the cover. An exhaust hole is arranged on the cover for exhausting gas generated in the battery. The gas is exhausted by the exhaust hole through the semi-permeable film. Electrolyte is prevented from leakage through the exhaust hole by the semi-permeable film. The gas exhausted through the exhaust hole is exhausted outside the battery through the exhaust hole arranged on the cover of the cover component.
Description
The present invention relates to a kind of cap assembly of secondary cell, especially relate to a kind of cap assembly with semipermeability rete, this semi-permeable rete can prevent that electrolyte is from battery drain and allow gaseous emission.
Usually, secondary cell be such as nickel-cadmium cell or Ni-MH battery such be widely used chargeable battery.Because the chemical reaction when discharging and recharging produces gas, this secondary cell bears high interior pressure, though uncommon, because gas produces, battery explosion may take place.
Therefore, at present known many batteries have the cap assembly that safety valve is housed, and the steam vent that safety valve forms on can be by cap sleeve when excessive pressure increases is emitted gas, with the air pressure in the reduction battery.
United States Patent (USP) NOS.3,516,870 and 4,078,121 disclose this kind battery.
Yet the defective of this existing cap assembly is that electrolyte leaks thereupon when the steam vent that gas forms on by cap sleeve is emitted.When this happens, because electrolyte density changes in the battery, the battery performance variation.In addition, the outer surface of battery and ancillary equipment are by electrolyte pollution and damage.
Therefore, the present invention attempts to solve the problems referred to above of existing battery.
The object of the invention provides a kind of cap assembly of secondary cell, can prevent electrolyte leakage when allowing gaseous emission, thereby keeps battery performance and prevent the contaminated and damage of ancillary equipment.
According to a feature of the present invention, realize above-mentioned purpose by in the battery cap assembly, using the semi-permeable film layer, this semipermeability rete can prevent electrolyte leakage, finishes gaseous emission simultaneously.
This permeability rete is arranged between pressure regulating part and the cap sleeve.Cap sleeve is provided with steam vent, is used to discharge the gas that produces in the battery.Gas discharges through the semipermeability rete by steam vent, and because the semipermeability of rete, electrolyte can not leak by steam vent.The gas of emitting by steam vent is discharged into the outside of battery again by the steam vent that forms on the cap of cap assembly.
The semipermeability rete is preferably made by resembling the such synthetic resin of polyethylene or polyvinyl chloride.More preferably, polyethylene can be selected from low density polyethylene (LDPE) or crosslinked polyethylene.
To understand the present invention more fully from the detailed description and the accompanying drawings given below, but they only are used for illustrative, and are not used in restriction the present invention, wherein:
Fig. 1 is the cutaway view according to the secondary cell cap assembly of first embodiment of the invention;
Fig. 2 is the cutaway view according to the secondary cell cap assembly of second embodiment of the invention;
Fig. 3 is the cutaway view according to the secondary cell cap assembly of third embodiment of the invention.
Be the description of preferably implementing according to the present invention below.In the drawings, same numeral is represented similar elements.
At first with reference to Fig. 1, expression is according to the cross-sectional view of the secondary cell cap assembly of first embodiment of the invention.Cap assembly of the present invention comprises the cap 4 with steam vent 5, emits gas by steam vent 5.Cap sleeve 6 is connected on the cap 4 at the open lower end place of cap 4, and the heart partly has steam vent 7 therein.The opening of the pressure control steam vent 7 that elastomer 12 produces in according to battery is set between cap sleeve 6 and cap 4.The semi-permeable rete 10 of main element of the present invention is between elastic component and cap sleeve 6.Rete 10 is selected from and can prevents that electrolyte from can make the material of gaseous emission from battery drain.Seal 8 is arranged between cap sleeve 6 and the battery container so that sealing to be provided.
Elastic component is by cylindrical rubber spare shown in Figure 1 12, or pressure plare 14 shown in Figure 2 and helical spring 15, and the sheet spring 16 of pressure plare 14 perhaps shown in Figure 3 and zigzag structure constitutes.
As mentioned above, semipermeability rete 10 is designed to prevent that electrolyte from allowing gas to emit from battery drain simultaneously.Semipermeability rete 10 preferably constitutes by resembling the such synthetic resin of polyethylene or polyvinyl chloride.More preferably, polyethylene can be selected from low density polyethylene (LDPE) or crosslinked polyethylene.
Work according to secondary cell cap assembly of the present invention will be described below.
Since produce gas when battery discharge and charging, when the pressure in the battery is increased to above predeterminated level, the pressure compression that elastic component 12 is increased, the steam vent 7 that forms on the cap sleeve 6 just can be opened as a result.
When opened in hole 7, the gas in the battery was emitted by hole 7.
This gas permeation semipermeability rete 10 of emitting is discharged into the outside of battery by the steam vent 5 that forms on cap 4.When cell internal pressure is reduced to predeterminated level, elastic component 12 expansions, thus close steam vent 7.
At this duration of work, electrolyte flow is to the steam vent 7 of cap sleeve 6.Yet because the semi-permeable characteristic of rete 10, electrolyte can not leak by steam vent 7.
As mentioned above, do not have the advantage that prevents that battery outer surface and ancillary equipment are contaminated and destroy according to creative cap assembly of the present invention owing to do not leak electrolyte.
In addition, because can avoid electrolyte leakage, when to battery discharge and charging, density can not change, and can not occur battery performance like this and reduce.
In conjunction with the most realistic and preferred embodiment of considering at present the present invention was carried out description, should be appreciated that the present invention is not limited to this disclosed embodiment, on the contrary, attempt to cover various distortion and equate layout and method, they are included in the spirit and scope of accessory claim.
Claims (10)
1. the cap assembly of a secondary cell is used for by the steam vent emission gases, reduces the pressure in the battery when increasing with convenient excessive pressure, and cap assembly comprises:
The gas that chemical reaction when allowing battery charging and discharging produces prevents the device of electrolyte leakage when battery is emitted.
2. battery cap assembly according to claim 1 also comprises:
Be provided with the cap more than a steam vent, steam vent is used to discharge the gas that produces in the battery; And
Be fixed on the cap and be provided with the cap sleeve of the steam vent of emission gases;
Wherein said device is between described cap and described cap sleeve.
3. battery cap assembly according to claim 2, wherein said device comprise the semipermeability rete between described cap and described cap sleeve, allow gas to emit to prevent electrolyte leakage.
4. battery cap assembly according to claim 3, wherein said device also comprise the pressure regulating part between described semipermeability rete and described cap, so that change the opening/closing steam vent according to the pressure in the battery.
5. battery cap assembly according to claim 2 also comprises the seal between cap sleeve and battery container, so that sealing to be provided betwixt.
6. battery cap assembly according to claim 3, wherein said semipermeability rete are to select from the group of polyethylene and polyvinyl chloride formation.
7. battery cap assembly according to claim 6, wherein said polyethylene are to select from low density polyethylene (LDPE) or crosslinked polyethylene.
8. battery cap assembly according to claim 4, wherein the pressure regulating part is to be made by rubber.
9. battery cap assembly according to claim 4, wherein the pressure regulating part comprises helical spring and pressure plare.
10. battery cap assembly according to claim 4, wherein the pressure regulating part comprises zigzag reed and pressure plare.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960014225U KR970064229U (en) | 1996-05-31 | 1996-05-31 | Secondary battery cap assembly |
| KR14225/96 | 1996-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1168542A true CN1168542A (en) | 1997-12-24 |
Family
ID=19457539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97110505A Pending CN1168542A (en) | 1996-05-31 | 1997-04-07 | Cap assembly of secondary batteries |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH1055793A (en) |
| KR (1) | KR970064229U (en) |
| CN (1) | CN1168542A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359717C (en) * | 2004-03-24 | 2008-01-02 | 三星Sdi株式会社 | Cap assembly and secondary battery using the same |
| WO2010091628A1 (en) * | 2009-02-12 | 2010-08-19 | Shanghai Byd Company Limited | End cover assembly and lithium secondary battery having the same |
| CN101887947A (en) * | 2010-06-17 | 2010-11-17 | 深圳市山木电池科技有限公司 | Combined battery cap |
| CN102934260A (en) * | 2010-06-24 | 2013-02-13 | Gvs有限公司 | Improved overpressure security vent and exhaust device for a container |
| CN103531730A (en) * | 2012-07-02 | 2014-01-22 | 深圳市沃特玛电池有限公司 | Leak-proof cap for lithium-ion power battery |
| CN103682206A (en) * | 2012-09-12 | 2014-03-26 | 深圳市沃特玛电池有限公司 | Leakage-proof cap of lithium ion power battery |
| EP3208867A1 (en) * | 2016-02-19 | 2017-08-23 | Samsung SDI Co., Ltd | Battery pack |
| WO2023108569A1 (en) * | 2021-12-16 | 2023-06-22 | 宁德时代新能源科技股份有限公司 | Exhaust device, battery cell, battery, and electrical device |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4559567B2 (en) * | 1999-10-08 | 2010-10-06 | パナソニック株式会社 | Sealed storage battery |
| KR20110109029A (en) * | 2010-03-30 | 2011-10-06 | 킴스테크날리지 주식회사 | Electrochemical cell with gas permeable membrane |
| KR101296253B1 (en) * | 2012-06-14 | 2013-08-13 | 킴스테크날리지 주식회사 | Electrochemical Cell with Gas Permeable Membrane |
| EP2683001B1 (en) * | 2012-07-02 | 2016-02-03 | Optimum Battery Co., Ltd. | Cap assembly for lithium ion secondary battery |
| JP6260590B2 (en) * | 2015-07-14 | 2018-01-17 | トヨタ自動車株式会社 | Non-aqueous secondary battery |
-
1996
- 1996-05-31 KR KR2019960014225U patent/KR970064229U/en not_active Application Discontinuation
-
1997
- 1997-04-07 CN CN97110505A patent/CN1168542A/en active Pending
- 1997-04-17 JP JP9099495A patent/JPH1055793A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359717C (en) * | 2004-03-24 | 2008-01-02 | 三星Sdi株式会社 | Cap assembly and secondary battery using the same |
| WO2010091628A1 (en) * | 2009-02-12 | 2010-08-19 | Shanghai Byd Company Limited | End cover assembly and lithium secondary battery having the same |
| CN101887947A (en) * | 2010-06-17 | 2010-11-17 | 深圳市山木电池科技有限公司 | Combined battery cap |
| CN102934260B (en) * | 2010-06-24 | 2016-06-22 | Gvs有限公司 | The overpressure security vent of improvement and exhaust apparatus for container |
| CN102934260A (en) * | 2010-06-24 | 2013-02-13 | Gvs有限公司 | Improved overpressure security vent and exhaust device for a container |
| US9428304B2 (en) | 2010-06-24 | 2016-08-30 | Gvs S.P.A. | Overpressure security vent and exhaust device for a container |
| CN103531730A (en) * | 2012-07-02 | 2014-01-22 | 深圳市沃特玛电池有限公司 | Leak-proof cap for lithium-ion power battery |
| CN103531730B (en) * | 2012-07-02 | 2017-03-15 | 深圳市沃特玛电池有限公司 | A kind of Leak-proof cap of lithium-ion-power cell |
| CN103682206A (en) * | 2012-09-12 | 2014-03-26 | 深圳市沃特玛电池有限公司 | Leakage-proof cap of lithium ion power battery |
| CN103682206B (en) * | 2012-09-12 | 2016-12-21 | 深圳市沃特玛电池有限公司 | A kind of Leak-proof cap of lithium-ion-power cell |
| EP3208867A1 (en) * | 2016-02-19 | 2017-08-23 | Samsung SDI Co., Ltd | Battery pack |
| CN107104215A (en) * | 2016-02-19 | 2017-08-29 | 三星Sdi株式会社 | Battery pack |
| US10923695B2 (en) | 2016-02-19 | 2021-02-16 | Samsung Sdi Co., Ltd. | Battery pack |
| CN107104215B (en) * | 2016-02-19 | 2022-03-04 | 三星Sdi株式会社 | Battery pack |
| WO2023108569A1 (en) * | 2021-12-16 | 2023-06-22 | 宁德时代新能源科技股份有限公司 | Exhaust device, battery cell, battery, and electrical device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1055793A (en) | 1998-02-24 |
| KR970064229U (en) | 1997-12-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |