CN201910464U - Lithium battery capable of preventing liquid leakage and liquid seepage - Google Patents
Lithium battery capable of preventing liquid leakage and liquid seepage Download PDFInfo
- Publication number
- CN201910464U CN201910464U CN2010206562550U CN201020656255U CN201910464U CN 201910464 U CN201910464 U CN 201910464U CN 2010206562550 U CN2010206562550 U CN 2010206562550U CN 201020656255 U CN201020656255 U CN 201020656255U CN 201910464 U CN201910464 U CN 201910464U
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- China
- Prior art keywords
- shell
- seepage
- lithium battery
- block
- leakage
- 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
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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)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides a lithium battery capable of preventing liquid leakage and liquid seepage, comprising a shell, a winding core, a pole lug and a cap, wherein the winding cap and the cap are electrically connected by the pole lug; and the winding core, the pole lug and the cap are positioned in the shell. The shell is provided with through holes; the cap is arranged in the through holes; and the cap and the shell are connected in a sealing manner by elastic rings. Since the elastic rings with a good elastic performance are arranged between the cap and the shell, after the battery is sealed, the elastic rings well fill gaps between the cap and the shell by self elasticity function, so that the problem of liquid leakage or liquid seepage after the battery is sealed is avoided. Due to the filling and sealing function of the elastic ring, the ideal sealing effect needed by glue dispensing in the prior art is achieved, and the glue dispensing link is omitted before the cap is sealed, so that the production process is simplified, and the production cost is reduced.
Description
Technical field
The utility model relates to a kind of lithium battery, relates in particular to the lithium battery of a kind of anti-leakage and seepage-proof liquid.
Background technology
Along with science and technology is constantly progressive, the lithium battery manufacturing process technology is more and more ripe, but at home, lithium battery technology relatively lags behind, and particularly for some medium-sized and small enterprises, lacks qualified technical personnel, and some technical bottleneck may be fatal to its influence sometimes.The most typical example is exactly the sealing tech of cylindrical battery.Sealing mode at present commonly used has mould to seal and revolves and seals two kinds.These two kinds of sealing operations are simple, but because the restriction of equipment and material, contact firmly between shell wall and the cover plate, can form certain slit, and people smear one deck glue usually and seal (being called dotting glue method) between the slit before sealing.Adopt this measure to prevent battery leakage, sealing effectiveness is relatively poor, and leakage and sepage problem are of common occurrence.
The utility model content
The technical problems to be solved in the utility model is that the good anti-leakage of a kind of sealing effectiveness and the lithium battery of seepage-proof liquid are provided.
In order to solve the problems of the technologies described above, the utility model provides the lithium battery of a kind of anti-leakage and seepage-proof liquid, comprises shell, volume core, lug and block, electrically connects by lug between volume core and the block, and volume core, lug and block are positioned at shell.Has through hole on the shell, block is arranged in this through hole, be tightly connected by elastic ring between block and the shell, described elastic ring is a column, described elastic ring inside has cavity, the upper and lower surface of described elastic ring has through hole respectively, and the through hole on the upper and lower surface of described elastic ring communicates with the through hole of described shell, and described block is positioned at the cavity of described elastic ring.
Owing to have elastic performance better elastic ring between block and the shell, behind the battery seal, elastic ring is by the elastic reaction of self, the gap between block and shell is well filled, and prevented the appearance of leakage behind the battery seal or sepage problem.Because the filling sealing function of elastic ring has realized that prior art mid point glue will reach the ideal effect of sealing, and block a shot and saved some glue link before sealing, like this, simplified production technology, reduced production cost.
Description of drawings
Fig. 1 is a kind of anti-leakage that provides of the utility model embodiment and the lithium battery structure schematic diagram of seepage-proof liquid.
Embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 1, the utility model embodiment provides the lithium battery of a kind of anti-leakage and seepage-proof liquid, and it comprises shell 1, volume core 2, lug 3 and block a shot 4, electrically connects by lug 3 between volume core 2 and the block 4, rolls up core 2, lug 3 and block a shot 4 to be positioned at shell 1.Shell 1 has through hole 11, and block 4 is arranged in this through hole 11, is tightly connected by elastic ring 14 between block 4 and the shell 1.
Particularly, above-mentioned block 4 comprises top cover 41, pad 42 and safety valve 43.Have several air vent holes on the top cover 41, top cover 41 has horizontal cage 412, and along vertically being extended with boss 411 on the mediad of cage 412, this boss 411 passes through hole 11 and its part is exposed to outside shell 1 surface, and cage 412 is positioned at the cavity of shell 1.Safety valve 43 is positioned at the bottom of top cover 41, is provided with pad 42 between top cover 41 and the safety valve 43, and pad 42 is a ring-type, and the material of this pad 42 adopts nickel in the present embodiment.
Can also be connected by positive temperature coefficient terminal (PTC) between top cover 41 and the safety valve 43.When short circuit appears in battery, cause inside battery generation side reaction, internal temperature of battery constantly raises, and the internal resistance of PTC is along with the also sharply increase of rising of temperature, when arriving on the PTC design temperature, temperature prescribes a time limit, PTC internal resistance maximum, and this moment, short circuit current became very little, so just reach the carrying out of effective prevention side reaction, thereby prevent that battery from blasting.
Safety valve 43 comprises last sheet metal 432 and the less following sheet metal 431 of external diameter that external diameter is bigger; there is the ring-type indentation on the surface of wherein going up sheet metal 432; there are several gas ports on the surface of following sheet metal 431; link together by laser spot welding between last sheet metal 432 and the following sheet metal 431; lug 3 is connected with the bottom surface of following sheet metal 431; when the generation of the electrolyte in the battery roll core 2 gas pressure reaches 8-15kg; gases at high pressure disconnect the last sheet metal 432 of safety valve 43 with following sheet metal 431; realize power-off protection; when air pressure during up to 18-25kg; ring-type indentation on the safety valve parts 432 breaks; gas is discharged along the air vent hole of top cover 41, thereby the protection battery can not blasted.
Elastic ring 14 is for having the colloid of favorable elasticity, and this colloid composition is ethylene propylene diene rubber, MODIFIED PP (polypropylene) etc.Elastic ring 14 is a column in the present embodiment, its inside has cavity, and the upper and lower surface of elastic ring 14 has through hole respectively, and this through hole communicates with the through hole 11 of shell 1, cage 412, pad 42 and safety valve 43 are wrapped in the cavity of elastic ring 14, block 4 and shell 1 are tightly connected.Elastic ring 14 can also be other shapes, as long as block 4 and shell 1 are tightly connected all within protection range of the present utility model.
Owing to have elastic performance better elastic ring 14 between block 4 and the shell 1, behind the battery seal, elastic ring 14 is by the elastic reaction of self, and the gap of 1 on block 4 and shell well filled, and so just prevented the appearance of leakage behind the battery seal or sepage problem.Because the filling sealing function of elastic ring 14 has realized that prior art mid point glue will reach the ideal effect of sealing, and block a shot and 4 saved some glue link before sealing, like this, simplified production technology, reduced production cost.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (6)
1. the lithium battery of anti-leakage and seepage-proof liquid, comprise shell, the volume core, lug and block, electrically connect by lug between described volume core and the block, described volume core, lug and block are positioned at described shell, has through hole on the described shell, described block is arranged in the described through hole, it is characterized in that: be tightly connected by elastic ring between described block and the shell, described elastic ring is a column, described elastic ring inside has cavity, on the described elastic ring, lower surface has through hole respectively, on the described elastic ring, the through hole of lower surface communicates with the through hole of described shell, and described block is positioned at the cavity of described elastic ring.
2. the lithium battery of anti-leakage as claimed in claim 1 and seepage-proof liquid is characterized in that: described block comprises top cover and safety valve, and described top cover is arranged in the described through hole, and described safety valve is positioned at the bottom of described top cover, and described safety valve is connected with lug.
3. the lithium battery of anti-leakage as claimed in claim 2 and seepage-proof liquid, it is characterized in that: described safety valve comprises last sheet metal and the less following sheet metal of external diameter that external diameter is bigger, there is the ring-type indentation on described surface of going up sheet metal, described have several gas ports on the sheet metal down, described going up between sheet metal and the following sheet metal links together by laser spot welding, and described lug is connected with the bottom surface of following sheet metal.
4. the lithium battery of anti-leakage as claimed in claim 2 and seepage-proof liquid is characterized in that: have air vent hole on the described top cover.
5. as the lithium battery of each described anti-leakage of claim 2-4 and seepage-proof liquid, it is characterized in that: be provided with pad between described top cover and the safety valve.
6. as the lithium battery of each described anti-leakage of claim 2-4 and seepage-proof liquid, it is characterized in that: be provided with the positive temperature coefficient terminal between described top cover and the safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206562550U CN201910464U (en) | 2010-12-13 | 2010-12-13 | Lithium battery capable of preventing liquid leakage and liquid seepage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206562550U CN201910464U (en) | 2010-12-13 | 2010-12-13 | Lithium battery capable of preventing liquid leakage and liquid seepage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201910464U true CN201910464U (en) | 2011-07-27 |
Family
ID=44302664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206562550U Expired - Lifetime CN201910464U (en) | 2010-12-13 | 2010-12-13 | Lithium battery capable of preventing liquid leakage and liquid seepage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201910464U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109346775A (en) * | 2018-10-26 | 2019-02-15 | 大连中比动力电池有限公司 | Seal structure for lithium battery and lithium battery |
-
2010
- 2010-12-13 CN CN2010206562550U patent/CN201910464U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109346775A (en) * | 2018-10-26 | 2019-02-15 | 大连中比动力电池有限公司 | Seal structure for lithium battery and lithium battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN CHUANGMING NEW ENERGY CO., LTD. Free format text: FORMER NAME: CHUANGMIN BATTERY TECH CO., LTD., SHENZHEN CITY |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518000, room 8, building 03, Fangda building, South District, Nanshan High tech Zone, Guangdong, Shenzhen Patentee after: SHENZHEN CHAM NEW ENERGY CO., LTD. Address before: 518000, room 8, building 03, Fangda building, South District, Nanshan High tech Zone, Guangdong, Shenzhen Patentee before: Chuangmin Battery Tech Co., Ltd., Shenzhen City |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110727 |