CN101853926A - Battery steel shell and insulating method and battery thereof - Google Patents
Battery steel shell and insulating method and battery thereof Download PDFInfo
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- CN101853926A CN101853926A CN201010206166.0A CN201010206166A CN101853926A CN 101853926 A CN101853926 A CN 101853926A CN 201010206166 A CN201010206166 A CN 201010206166A CN 101853926 A CN101853926 A CN 101853926A
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- battery
- steel shell
- insulating barrier
- battery steel
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Abstract
The invention relates to a battery steel shell, an insulating method thereof and a battery using the same. The battery steel shell comprises a shell, a shell inner cavity and an upper insulating layer which is formed at the inner wall of the top of the shell and is used for being insulated from the upper part of a battery cell. In the invention, a traditional insulation spacer with equivalent thickness is replaced by the upper insulation layer formed on the inner wall of the top of the battery steel shell to insulate from the battery cell without occupying a battery air chamber and excessive space inside the battery, thereby increasing the space of the air chamber and the inside of the battery and improving the performance and the capacity of the battery. When the battery is short-circuited, the upper insulated layer cannot block an explosion-proof hole and a large amount of gases generated due to the short circuit of the battery are smoothly exhausted through the explosion-proof hole, thereby preventing the battery from exploding, avoiding the generation of risks and greatly improving the safety performance of the battery.
Description
[technical field]
The present invention relates to a kind of cell apparatus, relate in particular to a kind of battery steel shell and insulating method thereof and battery.
[background technology]
The whole housing of common battery steel shell conducts electricity, and causes zero electricity for the positive pole that prevents electric core the inside touches housing, must place insulation spacer at the bottom and the top of electric core.
But placing insulating trip is an independent operation of battery manufacturing process, needs to consume a large amount of manpowers.In high-capacity battery, the utilization in the space of inside battery is closely near the limit, and insulation spacer has bigger thickness, places insulation spacer and takies the inside battery space, causes battery electric quantity to reduce, and also makes the air chamber space become very narrow and small, the security performance variation.Simultaneously; because the material of insulation spacer is PVC or other high molecular polymer; sharply rising of internal temperature of battery (up to about 200 degree) when battery short circuit; the insulation cushion sector-meeting at electricity core top is melted; the insulation spacer that is melted stops up the cell row pore through regular meeting; a large amount of gases that battery short circuit is produced can not be got rid of by steam vent smoothly, thereby set off an explosion, and cause danger.
[summary of the invention]
In view of this, be necessary that placing insulation spacer at above-mentioned box hat makes the battery performance variation cause dangerous problem, proposes a kind of battery steel shell that improves battery performance and safety.
In addition, also provide a kind of battery performance and the insulating method of battery steel shell of safety and battery that uses this battery steel shell of improving.
A kind of battery steel shell comprises housing and housing inner chamber, comprises that also being formed at the case top inwall is used for the last insulating barrier that insulate with battery battery core top.
Preferably, comprise that also being formed at the housing bottom inwall is used for the following insulating barrier that insulate with battery battery core bottom.
Preferably, described upward thickness of insulating layer is 0.1um to 100um, highly is 1mm to 50mm.
Preferably, described thickness of insulating layer down is 0.1um to 300um, and diameter is 9mm to 40mm.
Preferably, the described insulating barrier of going up passes through to adopt spraying method with following insulating barrier, applies one deck coatings at the housing bottom inwall and forms, and perhaps passes through the employing electrochemical means, forms at housing bottom inwall electro-deposition one deck electrophoretic paint.
A kind of battery comprises the air chamber of the electric core of battery steel shell, battery steel shell inside, electric core top and the explosionproof hole of air chamber top, and described battery steel shell is above-mentioned battery steel shell.
A kind of insulating method of battery steel shell, this method form insulating barrier at the case top inwall housing and electric core top are insulated.
Preferably, described method also is included in the housing bottom inwall and forms down the step that insulating barrier insulate to housing and electric core bottom.
Preferably, insulating barrier is specially in the described formation: adopt spraying method, apply one deck coatings at the case top inwall and form insulating barrier, perhaps adopt electrochemical means, form insulating barrier at case top inwall electro-deposition one deck electrophoretic paint, and the described upward thickness of insulating layer that forms is 0.1um to 100um, highly is 1mm to 50mm.
Preferably, insulating barrier is specially under the described formation: adopt spraying method, apply one deck coatings at the housing bottom inwall and form insulating barrier down, perhaps adopt electrochemical means, form insulating barrier down at housing bottom inwall electro-deposition one deck electrophoretic paint, and the described thickness of insulating layer down that forms is 0.1um to 300um, and diameter is 9mm to 40mm.
Above-mentioned battery steel shell and insulating method thereof and the battery that uses this battery steel shell, forming insulating barrier in the battery steel shell top inner wall replaces traditional insulation spacer that suitable thickness is arranged that electric core is insulated, do not take the too much space of battery air chamber and inside battery, thereby increased the space of air chamber and inside battery, improved the performance and the capacity of battery.When battery short circuit, last insulating barrier can not stop up explosionproof hole, and a large amount of gases that battery short circuit produces are discharged by explosionproof hole smoothly, thereby avoid battery to blast, and prevents dangerous generation, improves the security performance of battery greatly.
Simultaneously, insulating barrier insulate to electric core under the battery steel shell bottom interior wall forms, and further increases the space of air chamber and inside battery, improves the performance and the capacity of battery.And in battery manufacturing process, do not need to carry out again independent operation, saved great amount of manpower and expense.
[description of drawings]
Fig. 1 is a battery steel shell structural representation among the embodiment;
Fig. 2 is the battery structure schematic diagram that adopts battery steel shell shown in Figure 1 among the embodiment.
[embodiment]
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Fig. 1 is a battery steel shell structural representation among the embodiment.Fig. 2 is the battery structure schematic diagram that adopts battery steel shell shown in Figure 1 among the embodiment.
In conjunction with Fig. 1 and Fig. 2, this battery steel shell comprises housing 110, housing inner chamber 120 and goes up insulating barrier 130 and following insulating barrier 140.
Housing inner chamber 120 inner spaces and electric core 210 sizes are adaptive, are used to place electric core 210.Last insulating barrier 130 is positioned at the top inner wall of housing 110, around housing 110 inwalls, is used for electric core 210 tops and housing 110 are isolated, and both are insulated.Following insulating barrier 140 is positioned at housing 110 bottom interior wall, and housing 110 bottoms are covered, and is used for being insulated in electric core 210 bottoms and housing 110 isolation.
Among this embodiment, last insulating barrier 130 thickness are 0.1um～100um, highly are 1mm～50mm, it is by adopting spraying method, apply one deck coatings in housing 110 top inner wall and form, perhaps adopt electrochemical means, form at housing 110 top inner wall electro-deposition one deck electrophoretic paints.Following insulating barrier 140 thickness are 0.1um～300um, diameter is 9mm～40mm, and it applies one deck coatings in housing 110 bottom interior wall and form by adopting spraying method, perhaps adopt electrochemical means, form at housing 110 bottom interior wall electro-deposition one deck electrophoretic paints.
At battery short circuit, when internal temperature of battery can sharply raise, last insulating barrier 130 can not stop up explosionproof hole 230, a large amount of gases that battery short circuit produces are discharged by explosionproof hole 230 smoothly, thereby avoid battery to blast, prevent dangerous generation, improved the security performance of battery greatly.
Following table is that the blast number contrasts when using this battery steel shell with the short circuit of use conventional steel housing battery:
| The box hat classification | Short circuit experiment quantity | Blast quantity | Blast percentage |
| The tradition box hat | ??100 | ??3 | ??3％ |
| This battery steel shell | ??100 | ??0 | ??0％ |
Simultaneously, the last insulating barrier 130 and the following insulating barrier 140 of battery steel shell form when battery steel shell is made, and in battery manufacturing process, do not need to carry out independent operation again, have saved great amount of manpower and expense.
In addition, provide a kind of insulating method of above-mentioned battery steel shell, this method comprises:
Forming insulating barrier at the case top inwall insulate to housing and electric core top.
Among this embodiment, adopt spraying method, apply one deck coatings at the case top inwall and form insulating barrier, perhaps adopt electrochemical means, form insulating barrier at case top inwall electro-deposition one deck electrophoretic paint.The last thickness of insulating layer that forms is 0.1um～100um, highly is 1mm～50mm.
Forming down at the housing bottom inwall, insulating barrier insulate to housing and electric core bottom.
Among this embodiment, adopt spraying method, apply one deck coatings at the housing bottom inwall and form insulating barrier down, perhaps adopt electrochemical means, form insulating barrier down at housing bottom inwall electro-deposition one deck electrophoretic paint.The following thickness of insulating layer that forms is 0.1um～300um, and diameter is 9mm～40mm.
This battery steel shell insulating method forms insulating barrier at the case top inwall, forms insulating barrier down at the housing bottom inwall, and last insulating barrier and following insulating barrier are thin layer.When electric core is carried out isolated insulation, make the battery air chamber have than large space, guarantee and improved the security performance of battery.Simultaneously, the shell cavity space that enclosure interior is used to place electric core also becomes greatly, makes electric core size can the phase strain big, and electric core can add more active materials, thereby has improved the capacity of battery.
At battery short circuit, when internal temperature of battery can sharply raise, last insulating barrier can not stop up explosionproof hole, a large amount of gases that battery short circuit produces are discharged by explosionproof hole smoothly, thereby avoid battery to blast, prevent dangerous generation, improved the security performance of battery greatly.
Following table is battery blast number contrast when using this insulating method and using the insulating method short circuit:
| The box hat classification | Short circuit experiment quantity | Blast quantity | Blast percentage |
| The tradition insulating method | ??100 | ??3 | ??3％ |
| This insulating method | ??100 | ??0 | ??0％ |
Simultaneously, this insulating method, insulating barrier and following insulating barrier newly insulate to electricity in the formation, in battery manufacturing process, do not need to carry out independent operation again, have saved great amount of manpower and expense.
Above-mentioned battery steel shell and insulating method thereof and the battery that uses this battery steel shell, form insulating barrier and form down that insulating barrier replaces traditional insulation spacer that suitable thickness is arranged that electric core is insulated in the battery steel shell bottom interior wall in the battery steel shell top inner wall, do not take the too much space of battery air chamber and inside battery, thereby increased the space of air chamber and inside battery, improved the performance and the capacity of battery.When battery short circuit, last insulating barrier can not stop up explosionproof hole, and a large amount of gases that battery short circuit produces are discharged by explosionproof hole smoothly, thereby avoid battery to blast, and prevents dangerous generation, improves the security performance of battery greatly.
Simultaneously, insulating barrier and following insulating barrier insulate to electric core in the employing, in battery manufacturing process, do not need to carry out independent operation again, have saved great amount of manpower and expense.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a battery steel shell comprises housing and housing inner chamber, it is characterized in that, comprises that also being formed at the case top inwall is used for the last insulating barrier that insulate with battery battery core top.
2. battery steel shell according to claim 1 is characterized in that, comprises that also being formed at the housing bottom inwall is used for the following insulating barrier that insulate with battery battery core bottom.
3. battery steel shell according to claim 1 and 2 is characterized in that, described upward thickness of insulating layer is 0.1um to 100um, highly is 1mm to 50mm.
4. battery steel shell according to claim 2 is characterized in that, described thickness of insulating layer down is 0.1um to 300um, and diameter is 9mm to 40mm.
5. battery steel shell according to claim 4, it is characterized in that the described insulating barrier of going up passes through to adopt spraying method with following insulating barrier, applies one deck coatings at the housing bottom inwall and forms, perhaps, form at housing bottom inwall electro-deposition one deck electrophoretic paint by adopting electrochemical means.
6. a battery comprises the air chamber of the electric core of battery steel shell, battery steel shell inside, electric core top and the explosionproof hole of air chamber top, it is characterized in that described battery steel shell is the arbitrary described battery steel shell of claim 1 to 5.
7. the insulating method of a battery steel shell is characterized in that, this method forms insulating barrier at the case top inwall housing and electric core top are insulated.
8. the insulating method of battery steel shell according to claim 7 is characterized in that, described method also is included in the housing bottom inwall and forms down the step that insulating barrier insulate to housing and electric core bottom.
9. according to the insulating method of claim 7 or 8 described battery steel shells, it is characterized in that, insulating barrier is specially in the described formation: adopt spraying method, apply one deck coatings at the case top inwall and form insulating barrier, perhaps adopt electrochemical means, form insulating barrier at case top inwall electro-deposition one deck electrophoretic paint, and form described to go up thickness of insulating layer be 0.1um to 100um, highly be 1mm to 50mm.
10. the insulating method of battery steel shell according to claim 8, it is characterized in that, insulating barrier is specially under the described formation: adopt spraying method, apply one deck coatings at the housing bottom inwall and form insulating barrier down, perhaps adopt electrochemical means, form down insulating barrier at housing bottom inwall electro-deposition one deck electrophoretic paint, and the described thickness of insulating layer down that forms is 0.1um to 300um, diameter is 9mm to 40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010206166.0A CN101853926A (en) | 2010-06-22 | 2010-06-22 | Battery steel shell and insulating method and battery thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010206166.0A CN101853926A (en) | 2010-06-22 | 2010-06-22 | Battery steel shell and insulating method and battery thereof |
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| CN101853926A true CN101853926A (en) | 2010-10-06 |
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| CN201010206166.0A Pending CN101853926A (en) | 2010-06-22 | 2010-06-22 | Battery steel shell and insulating method and battery thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094790A (en) * | 2013-01-25 | 2013-05-08 | 奇瑞汽车股份有限公司 | Current connector capable of automatically disconnecting under high temperature |
| CN105552252A (en) * | 2015-12-11 | 2016-05-04 | 中国电子科技集团公司第十八研究所 | Long-storage lifetime lithium-ion battery and treatment method therefor |
| CN106455823A (en) * | 2014-06-27 | 2017-02-22 | 歌乐株式会社 | Head rest device |
| CN117861929A (en) * | 2024-03-11 | 2024-04-12 | 常州威斯敦粘合材料有限责任公司 | All-insulation spraying system and all-insulation spraying method for power battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1770495A (en) * | 2005-04-13 | 2006-05-10 | 深圳市比克电池有限公司 | Lithium ion battery casing, its manufacturing method and battery |
| CN101383429A (en) * | 2008-10-09 | 2009-03-11 | 深圳华为通信技术有限公司 | Method for manufacturing battery and battery manufactured thereby |
| CN201490241U (en) * | 2009-06-30 | 2010-05-26 | 深圳市金和能电池科技有限公司 | Lithium cell cover plate assembly and lithium cell using same |
-
2010
- 2010-06-22 CN CN201010206166.0A patent/CN101853926A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1770495A (en) * | 2005-04-13 | 2006-05-10 | 深圳市比克电池有限公司 | Lithium ion battery casing, its manufacturing method and battery |
| CN101383429A (en) * | 2008-10-09 | 2009-03-11 | 深圳华为通信技术有限公司 | Method for manufacturing battery and battery manufactured thereby |
| CN201490241U (en) * | 2009-06-30 | 2010-05-26 | 深圳市金和能电池科技有限公司 | Lithium cell cover plate assembly and lithium cell using same |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094790A (en) * | 2013-01-25 | 2013-05-08 | 奇瑞汽车股份有限公司 | Current connector capable of automatically disconnecting under high temperature |
| CN103094790B (en) * | 2013-01-25 | 2015-06-10 | 奇瑞汽车股份有限公司 | Current connector capable of automatically disconnecting under high temperature |
| CN106455823A (en) * | 2014-06-27 | 2017-02-22 | 歌乐株式会社 | Head rest device |
| CN106455823B (en) * | 2014-06-27 | 2019-11-08 | 歌乐株式会社 | Head rest device |
| CN105552252A (en) * | 2015-12-11 | 2016-05-04 | 中国电子科技集团公司第十八研究所 | Long-storage lifetime lithium-ion battery and treatment method therefor |
| CN117861929A (en) * | 2024-03-11 | 2024-04-12 | 常州威斯敦粘合材料有限责任公司 | All-insulation spraying system and all-insulation spraying method for power battery |
| CN117861929B (en) * | 2024-03-11 | 2024-05-10 | 常州威斯敦粘合材料有限责任公司 | All-insulation spraying system and all-insulation spraying method for power battery |
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Application publication date: 20101006 |