CN102169971A - Metal shell of battery and preparation method thereof - Google Patents
Metal shell of battery and preparation method thereof Download PDFInfo
- Publication number
- CN102169971A CN102169971A CN2011100749384A CN201110074938A CN102169971A CN 102169971 A CN102169971 A CN 102169971A CN 2011100749384 A CN2011100749384 A CN 2011100749384A CN 201110074938 A CN201110074938 A CN 201110074938A CN 102169971 A CN102169971 A CN 102169971A
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- wall
- sidewall
- battery
- thickness
- diapire
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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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Abstract
The invention discloses a metal shell of battery and a preparation method thereof, wherein the metal shell comprises a bottom wall, and a sidewall positioned at the upper end of the bottom wall; the bottom wall and the sidewall form a battery chamber; the sidewall consists of a thin wall part connected with the bottom wall and an anti-explosive wall part at the upper end of the thin wall; and the anti-explosive wall part is thicker than the thin wall part. The preparation method comprises the following steps of: A, punching a metal plate into a circular blank; B, extending the circular blank into a die to stretch into a cylindrical blank having a sidewall and a bottom wall; C, thinning and stretching the cylindrical blank component for more than five times so as to form a cylindrical thin wall blank component with a sidewall with uniform thickness; D, varying the wall of the cylindrical thin wall blank component for stretching and processing, and extending the upper end of the sidewall of the cylindrical thin wall blank component into a thicker semi-finished product; and E, cutting the deckle edge at the opening of the semi-finished product to prepare the battery shell meeting height requirement. The product has better anti-explosive performance while having thinner sidewall.
Description
Technical field
The present invention relates to the preparation method of the metal shell of a kind of metal shell of battery and this battery.
Background technology
In the prior art, the metal shell of battery constitutes sidewall thickness uniformity from top to bottom by diapire and the sidewall that is positioned at the diapire upper end.Usually, the metal shell of this battery all is to be washed into disk by the metal material base earlier, and repeatedly extending through mould processes again.The number of times of processing of extending is many more, and the sidewall of the metal shell of battery is just thin more, can make battery have bigger capacity, more saves material simultaneously, saves cost.
Yet it is too thin that the sidewall of the metal shell of the battery of prior art can not be processed, because can influence the explosion-proof performance of battery container like this, can bring more potential safety hazards.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of metal shell of battery is provided, the metal shell of this battery has thinner sidewall simultaneously, has better explosion-proof performance, and is safer.
The objective of the invention is to realize: a kind of metal shell of battery by following scheme, comprise diapire and the sidewall that is positioned at the diapire upper end, described diapire and described sidewall constitute battery cavities, described sidewall is made of the explosion-proof wall portion of the thinner wall section that is connected with described diapire and thinner wall section upper end, and the wall thickness of described explosion-proof wall portion is greater than the wall thickness of described thinner wall section.
The big 0.02-0.05mm of wall thickness of the described thinner wall section of wall ratio of described explosion-proof wall portion.
The thickness of described diapire is 0.3mm, and the wall thickness of described thinner wall section is 0.18mm, and the wall thickness of described explosion-proof wall portion is 0.2mm.
The thickness of described diapire is 0.5mm, and the wall thickness of described thinner wall section is 0.25mm, and the wall thickness of described explosion-proof wall portion is 0.28mm.
The thickness of described diapire is 0.3mm, and the wall thickness of described thinner wall section is 0.15mm, and the wall thickness of described explosion-proof wall portion is 0.17mm.
Another object of the present invention is to overcome deficiency of the prior art, a kind of preparation method of metal shell of battery is provided.
Another object of the present invention realizes by following scheme:
A kind of preparation method of metal shell of battery comprises the steps:
A, metallic plate is washed into circular material base;
B, described circular material base is placed Stretching die, be drawn into tubular blank with sidewall and a diapire;
C, described tubular blank is carried out attenuation more than the 5 times processing of extending, form the uniform cylindrical thin wall blank of sidewall thickness;
D, described cylindrical thin wall blank is become the wall processing of extending, the upper end of the sidewall of cylindrical thin wall blank is drawn into the bigger semi-finished articles of thickness;
E, the burr of described semi-finished articles opening part are trimmed, be prepared into the battery container that satisfies requirement for height.
The invention has the advantages that: the wall thickness of the explosion-proof wall portion of the metal shell of battery of the present invention is greater than the wall thickness of thinner wall section, this makes the present invention littler at the wall thickness of thinner wall section, have bigger battery capacity, more cost-effective while, have better explosion-proof performance, safer.In the preparation method of the metal shell of battery of the present invention, after carrying out extending more than 5 times, carried out the processing of extending of change wall, the thickness of the upper end of the sidewall of the housing of producing like this is bigger, make housing through the processing of extending more frequently, when can have thinner sidewall, has better explosion-proof performance.
Description of drawings
Fig. 1 is the cross-sectional view of the metal shell of battery of the present invention.
In Fig. 1: 1. diapire; 2. the thinner wall section of sidewall; 3. the explosion-proof wall portion of sidewall.
Embodiment
Below the present invention will be further described.
As shown in Figure 1, a kind of metal shell of battery comprises diapire 1 and the sidewall that is positioned at diapire 1 upper end, and diapire 1 constitutes battery cavities with sidewall, sidewall is made of the explosion-proof wall portion 3 of thinner wall section 2 that is connected with diapire 1 and thinner wall section 2 upper ends, and the wall thickness of explosion-proof wall portion 3 is greater than the wall thickness of thinner wall section 2.
As a kind of execution mode preferably of the present invention, the big 0.02-0.05mm of wall thickness of the wall ratio thinner wall section 2 of explosion-proof wall portion 3.
A kind of metal shell of battery, comprise diapire 1 and the sidewall that is positioned at diapire 1 upper end, diapire 1 constitutes battery cavities with sidewall, sidewall is made of the explosion-proof wall portion 3 of thinner wall section 2 that is connected with diapire 1 and thinner wall section 2 upper ends, wherein, the thickness of diapire 1 is 0.3mm, and the wall thickness of thinner wall section 2 is 0.18mm, and the wall thickness of explosion-proof wall portion 3 is 0.2mm.
A kind of metal shell of battery, comprise diapire 1 and the sidewall that is positioned at diapire 1 upper end, diapire 1 constitutes battery cavities with sidewall, sidewall is made of the explosion-proof wall portion 3 of thinner wall section 2 that is connected with diapire 1 and thinner wall section 2 upper ends, wherein, the thickness of diapire 1 is 0.5mm, and the wall thickness of thinner wall section 2 is 0.25mm, and the wall thickness of explosion-proof wall portion 3 is 0.28mm.
A kind of metal shell of battery, comprise diapire 1 and the sidewall that is positioned at diapire 1 upper end, diapire 1 constitutes battery cavities with sidewall, sidewall is made of the explosion-proof wall portion 3 of thinner wall section 2 that is connected with diapire 1 and thinner wall section 2 upper ends, wherein, the thickness of diapire 1 is 0.3mm, and the wall thickness of thinner wall section 2 is 0.15mm, and the wall thickness of explosion-proof wall portion 3 is 0.17mm.
The metal shell of battery of the present invention is prepared by following steps:
A, metallic plate is washed into circular material base;
B, circular material base is placed Stretching die, be drawn into tubular blank with sidewall and a diapire 1;
C, the tubular blank is carried out attenuation more than the 5 times processing of extending, form the uniform cylindrical thin wall blank of sidewall thickness;
D, the cylindrical thin wall blank is become the wall processing of extending, the upper end of the sidewall of cylindrical thin wall blank is drawn into the bigger semi-finished articles of thickness;
E, the burr of semi-finished articles opening part are trimmed, be prepared into the battery container that satisfies requirement for height.
In above-mentioned C step, the attenuation more than 5 times is extended and is processed as the segmentation stretch process of the tubular blank being carried out by drawing die.
The general requirement of raw material of the present invention has plasticity preferably, low yield tensile ratio, big thickness of slab directivity factor and little board plane directivity.
Should be noted that at last; above content is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; the simple modification that those of ordinary skill in the art carries out technical scheme of the present invention or be equal to replacement does not all break away from the essence and the scope of technical solution of the present invention.
Claims (6)
1. the metal shell of a battery, comprise diapire (1) and be positioned at the sidewall of diapire (1) upper end, described diapire (1) constitutes battery cavities with described sidewall, it is characterized in that: described sidewall is made of the explosion-proof wall portion (3) of thinner wall section (2) that is connected with described diapire (1) and thinner wall section (2) upper end, and the wall thickness of described explosion-proof wall portion (3) is greater than the wall thickness of described thinner wall section (2).
2. according to the metal shell of the described battery of claim 1, it is characterized in that: the big 0.02-0.05mm of wall thickness of the described thinner wall section of wall ratio (2) of described explosion-proof wall portion (3).
3. according to the metal shell of the described battery of claim 2, it is characterized in that: the thickness of described diapire (1) is 0.3mm, and the wall thickness of described thinner wall section (2) is 0.18mm, and the wall thickness of described explosion-proof wall portion (3) is 0.2mm.
4. according to the metal shell of the described battery of claim 2, it is characterized in that: the thickness of described diapire (1) is 0.5mm, and the wall thickness of described thinner wall section (2) is 0.25mm, and the wall thickness of described explosion-proof wall portion (3) is 0.28mm.
5. according to the metal shell of the described battery of claim 2, it is characterized in that: the thickness of described diapire (1) is 0.3mm, and the wall thickness of described thinner wall section (2) is 0.15mm, and the wall thickness of described explosion-proof wall portion (3) is 0.17mm.
6. the preparation method of the metal shell of a battery is characterized in that comprising the steps:
A, metallic plate is washed into circular material base;
B, described circular material base is placed Stretching die, be drawn into tubular blank with sidewall and diapire (1);
C, described tubular blank is carried out attenuation more than the 5 times processing of extending, form the uniform cylindrical thin wall blank of sidewall thickness;
D, described cylindrical thin wall blank is become the wall processing of extending, the upper end of the sidewall of cylindrical thin wall blank is drawn into the bigger semi-finished articles of thickness;
E, the burr of described semi-finished articles opening part are trimmed, be prepared into the battery container that satisfies requirement for height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100749384A CN102169971A (en) | 2011-03-28 | 2011-03-28 | Metal shell of battery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100749384A CN102169971A (en) | 2011-03-28 | 2011-03-28 | Metal shell of battery and preparation method thereof |
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| CN102169971A true CN102169971A (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100749384A Pending CN102169971A (en) | 2011-03-28 | 2011-03-28 | Metal shell of battery and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271458A (en) * | 2016-09-19 | 2017-01-04 | 江西恒动新能源有限公司 | A kind of process technology of square power lithium ion cell aluminum hull |
| CN106784435A (en) * | 2015-11-24 | 2017-05-31 | 三星Sdi株式会社 | Secondary cell and its manufacture method |
| CN109994661A (en) * | 2019-05-05 | 2019-07-09 | 宁波光华电池有限公司 | Alkaline zinc-manganese battery and production process of battery steel shell |
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| CN1983671A (en) * | 1997-08-05 | 2007-06-20 | 松下电器产业株式会社 | Battery and method of its manufacture |
| CN101208817A (en) * | 2005-07-21 | 2008-06-25 | 松下电器产业株式会社 | Battery can and manufacturing method thereof |
| CN101607288A (en) * | 2009-07-23 | 2009-12-23 | 国营红峰机械厂 | A kind of small cylinder stretching device |
| CN101701614A (en) * | 2009-08-27 | 2010-05-05 | 四川宁江山川机械有限责任公司 | Manufacturing technology of integrated oil storage cylinder and extension mould |
| CN101767154A (en) * | 2010-03-26 | 2010-07-07 | 北京三兴汽车有限公司 | Stepped cylindrical component die for medium plate |
| CN201605715U (en) * | 2009-12-30 | 2010-10-13 | 贵阳铝镁设计研究院 | Pipe canal beam of underground pipe canal |
| CN201618801U (en) * | 2010-02-13 | 2010-11-03 | 张付明 | Stretching mould |
| CN102044638A (en) * | 2010-11-19 | 2011-05-04 | 广州市鹏辉电池有限公司 | Lithium-manganese battery case and lithium-manganese battery |
| CN201975428U (en) * | 2011-03-28 | 2011-09-14 | 慈晟 | Metal shell of battery |
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2011
- 2011-03-28 CN CN2011100749384A patent/CN102169971A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1983671A (en) * | 1997-08-05 | 2007-06-20 | 松下电器产业株式会社 | Battery and method of its manufacture |
| CN101208817A (en) * | 2005-07-21 | 2008-06-25 | 松下电器产业株式会社 | Battery can and manufacturing method thereof |
| CN101607288A (en) * | 2009-07-23 | 2009-12-23 | 国营红峰机械厂 | A kind of small cylinder stretching device |
| CN101701614A (en) * | 2009-08-27 | 2010-05-05 | 四川宁江山川机械有限责任公司 | Manufacturing technology of integrated oil storage cylinder and extension mould |
| CN201605715U (en) * | 2009-12-30 | 2010-10-13 | 贵阳铝镁设计研究院 | Pipe canal beam of underground pipe canal |
| CN201618801U (en) * | 2010-02-13 | 2010-11-03 | 张付明 | Stretching mould |
| CN101767154A (en) * | 2010-03-26 | 2010-07-07 | 北京三兴汽车有限公司 | Stepped cylindrical component die for medium plate |
| CN102044638A (en) * | 2010-11-19 | 2011-05-04 | 广州市鹏辉电池有限公司 | Lithium-manganese battery case and lithium-manganese battery |
| CN201975428U (en) * | 2011-03-28 | 2011-09-14 | 慈晟 | Metal shell of battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784435A (en) * | 2015-11-24 | 2017-05-31 | 三星Sdi株式会社 | Secondary cell and its manufacture method |
| CN106784435B (en) * | 2015-11-24 | 2021-06-04 | 三星Sdi株式会社 | Secondary battery and method for manufacturing same |
| CN106271458A (en) * | 2016-09-19 | 2017-01-04 | 江西恒动新能源有限公司 | A kind of process technology of square power lithium ion cell aluminum hull |
| CN109994661A (en) * | 2019-05-05 | 2019-07-09 | 宁波光华电池有限公司 | Alkaline zinc-manganese battery and production process of battery steel shell |
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Application publication date: 20110831 |