CN2689470Y - Column lithium cell explosion-proof safety casing - Google Patents
Column lithium cell explosion-proof safety casing Download PDFInfo
- Publication number
- CN2689470Y CN2689470Y CN 200420045345 CN200420045345U CN2689470Y CN 2689470 Y CN2689470 Y CN 2689470Y CN 200420045345 CN200420045345 CN 200420045345 CN 200420045345 U CN200420045345 U CN 200420045345U CN 2689470 Y CN2689470 Y CN 2689470Y
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- explosion
- proof
- column type
- type lithium
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- Expired - Fee Related
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- Y02E60/12—
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- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a column type lithium battery explosion-proof safety casing. The casing of the utility model is provided with an explosion-proof decompression acting structure which includes not less than one explosion-proof node formed by graving and pressing of the machinery. The explosion-proof nodes are positioned at the outer bottom of the casing. The utility model ensures the explosion-proof safety performance of the battery by the breakdown and the decompression of the explosion-proof nodes under the rated gas-pressure action. Furthermore, the column type lithium battery explosion-proof safety casing has simple production technic and easy operation. The thickness detections of the explosion-proof nodes are convenient. The utility model has high controllability and can carry out the dynamic quality control. Furthermore, when the outer casing is in the heat shrinkable sleeve sealing, the utility model is able to contract uniformly, without breakage. The column type lithium battery explosion-proof safety casing has high rate of standard products and low production cost.
Description
Technical field
The utility model relates to a kind of lithium battery housing, relates in particular to a kind of column type lithium cell anti-explosion safety housing.
Background technology
Existing column type lithium cell housing is blasted under short circuit or abuse condition in order to prevent it, and the structure of explosion-proof relief effect can be set on housing usually.And the conventional structure that plays the explosion-proof relief effect is to carve the indentation of hindering and forming on housing, makes the high pressure energy avulsion indentation that produces when improper the use, promptly loses heart and pressure release, reaches explosion-proof security purpose.
Existing column type lithium cell explosion-proof casing, its indentation great majority vertically are formed at the side of cylindrical housings.At present, producer mainly contains two kinds to the injury science and engineering skill at quarter of battery container side: first kind is to adopt to carve earlier to hinder stamping forming again technology.But this technology causes damage carving the injury explosion easily in the housing punching course; Second kind is to adopt first moulding to carve the technology of wound again.Can this technology also can need additional treatments operations such as increase cleaning, vacuum annealing processing, thereby cause technology loaded down with trivial details because of pressure is big, compression face is scrapped than greatly in type housing side very easily being out of shape, production cost raises; And the space is less in the housing after the moulding, indentation thickness detects comparatively inconvenience, controllability is relatively poor, be difficult to indentation is realized dynamic quality management, and the side indentation can make the out-of-flatness of battery post body side surface, cause when the outsourcing thermal shrinkable sleeve is received envelope, shrink inhomogeneous and damaged, the generation of the phenomenon that causes doing over again, and then increased production cost, reduced production efficiency.
Chinese patent ZL 02245256.7 discloses a kind of column type lithium cell anti-explosion safety housing, its indentation is owing to be formed at the bottom of housing, therefore many defectives that above-mentioned indentation is formed at the housing side have been overcome to a certain extent, have that production technology is comparatively simple, operation is comparatively easy, hinder quarter thickness detect comparatively convenient, controllability is higher, can realize dynamic quality management to indentation, guarantee the anti-explosion safety performance of battery, and when the outsourcing thermal shrinkable sleeve is received envelope, can accomplish to shrink evenly, not damaged, characteristics such as product percent of pass is higher, and production cost is lower.But, because being still of adopting carved the impairment of the constitution and become indentation technology, therefore hinder in the technological process at whole quarter, relatively stricter to the requirement of hindering cutter quarter, need to do regularly to adjust or change.
Summary of the invention
The purpose of this utility model is at the problems referred to above, a kind of column type lithium cell anti-explosion safety housing is provided, its production technology is more simple, operation is more easy, the detection of explosion-proof relief structural thickness is more convenient, controllability is high, and can carry out dynamic quality management to the explosion-proof relief structure equally, guarantees the anti-explosion safety performance of battery, and when the outsourcing thermal shrinkable sleeve is received envelope, also can accomplish to shrink evenly, not damaged, the product percent of pass height, production cost is low.
For achieving the above object, the technical solution of the utility model is as follows: column type lithium cell anti-explosion safety housing, be provided with the structure of explosion-proof relief effect on housing, this structure that plays the explosion-proof relief effect comprises by machinery presses the explosion proof node that is no less than that forms quarter, is positioned at the outer bottom of housing.
The above-mentioned structure that plays the explosion-proof relief effect also comprises an annular explosion-proof relief groove, is positioned at the housing outer bottom, and explosion proof node is in the base projections of annular explosion-proof relief groove.
The thickness of above-mentioned explosion proof node is 0.04～0.10mm.
The utility model is by explosion proof node breakdown pressure release under specified gas pressure effect, guaranteed the anti-explosion safety performance of battery, and its production technology is simple, and is easy and simple to handle, and the thickness of explosion proof node is easy to detect, the controllability height, can carry out dynamic quality management to it, and when the outsourcing thermal shrinkable sleeve is received envelope, can accomplish to shrink evenly, not damaged, the product percent of pass height, production cost is low.
Description of drawings
Fig. 1 is a sectional structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of the utility model outer bottom;
Fig. 3 is that the B of Fig. 2 is to structural representation;
Fig. 4 is that the C of Fig. 3 is to structural representation.
Now the utility model is described in further detail in conjunction with the accompanying drawings and embodiments:
Embodiment
As shown in Figures 1 to 4, column type lithium cell anti-explosion safety housing described in the utility model, its housing 1 outer bottom is provided with an annular explosion-proof relief groove 3, four explosion proof nodes 2 of the base projections of annular explosion-proof relief groove 3.
The utility model manufacturing process is simple, at first with battery container routinely after the technology punch forming, surface treatment procedures such as advanced electroplating or annealing, carve pressure ring shape explosion-proof relief groove and explosion proof node with conventional press then, the pressure release pressure with conventional hydraulic pulldown sampling observation battery container gets final product at last.
The utility model adopts carbon steel nickel plating or stainless steel material, and material thickness is at 0.3～0.5mm.According to different materials and different pressure release scopes, but according to the form below requires to make the battery container of different model specification.
| Material | Node thickness (mm) | Pressure release scope (kg/cm 2) |
| Carbon steel nickel plating | 0.05 | 25～30 |
| 0.07 | 30～36 | |
| 0.10 | 36～48 | |
| Stainless steel | 0.04 | 25～32 |
| 0.05 | 32～38 | |
| 0.07 | 38～48 |
Claims (6)
1, column type lithium cell anti-explosion safety housing has been provided with the structure of explosion-proof relief effect on housing, it is characterized in that: the described structure that plays the explosion-proof relief effect comprise by machinery carve press form be no less than an explosion proof node (2), be positioned at the outer bottom of housing (1).
2, column type lithium cell anti-explosion safety housing according to claim 1, it is characterized in that: the described structure that plays the explosion-proof relief effect also comprises an annular explosion-proof relief groove (3), be positioned at housing (1) outer bottom, explosion proof node (2) is in the base projections of annular explosion-proof relief groove.
3, column type lithium cell anti-explosion safety housing according to claim 2, it is characterized in that: described explosion proof node (2) is four.
4, column type lithium cell anti-explosion safety housing according to claim 1 and 2, it is characterized in that: the thickness of described explosion proof node (2) is 0.04～0.10mm.
5, column type lithium cell anti-explosion safety housing according to claim 4, it is characterized in that: described housing is made by carbon steel material, and the thickness of its explosion proof node (2) is 0.05～0.10mm, and the pressure release scope is at 25～48kg/cm
2
6, column type lithium cell anti-explosion safety housing according to claim 4, it is characterized in that: described housing is made by stainless steel material, and the thickness of its explosion proof node (2) is 0.04～0.07mm, and the pressure release scope is at 25～48kg/cm
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420045345 CN2689470Y (en) | 2004-04-29 | 2004-04-29 | Column lithium cell explosion-proof safety casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420045345 CN2689470Y (en) | 2004-04-29 | 2004-04-29 | Column lithium cell explosion-proof safety casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2689470Y true CN2689470Y (en) | 2005-03-30 |
Family
ID=34672039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420045345 Expired - Fee Related CN2689470Y (en) | 2004-04-29 | 2004-04-29 | Column lithium cell explosion-proof safety casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2689470Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101416331B (en) * | 2006-03-30 | 2012-01-04 | 松下电器产业株式会社 | Electrochemical element |
| CN108500106A (en) * | 2018-04-17 | 2018-09-07 | 武汉孚安特科技有限公司 | A kind of 304 stainless steel explosion-proof casing preparation methods of lithium thionyl chloride cell |
| CN111584774A (en) * | 2020-06-15 | 2020-08-25 | 韩旭峰 | Safe naked-flame-free lithium iron phosphate battery |
| CN113146148A (en) * | 2020-01-21 | 2021-07-23 | 常州微宙电子科技有限公司 | Explosion-proof shell, grooving method thereof and battery with explosion-proof shell |
-
2004
- 2004-04-29 CN CN 200420045345 patent/CN2689470Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101416331B (en) * | 2006-03-30 | 2012-01-04 | 松下电器产业株式会社 | Electrochemical element |
| CN108500106A (en) * | 2018-04-17 | 2018-09-07 | 武汉孚安特科技有限公司 | A kind of 304 stainless steel explosion-proof casing preparation methods of lithium thionyl chloride cell |
| CN108500106B (en) * | 2018-04-17 | 2024-02-02 | 武汉孚安特科技有限公司 | Preparation method of 304 stainless steel explosion-proof shell of lithium thionyl chloride battery |
| CN113146148A (en) * | 2020-01-21 | 2021-07-23 | 常州微宙电子科技有限公司 | Explosion-proof shell, grooving method thereof and battery with explosion-proof shell |
| CN111584774A (en) * | 2020-06-15 | 2020-08-25 | 韩旭峰 | Safe naked-flame-free lithium iron phosphate battery |
| CN111584774B (en) * | 2020-06-15 | 2022-09-02 | 韩旭峰 | Safe naked-flame-free lithium iron phosphate battery |
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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: 20050330 |