CN202423399U - Metal shell power cell - Google Patents
Metal shell power cell Download PDFInfo
- Publication number
- CN202423399U CN202423399U CN2011205125857U CN201120512585U CN202423399U CN 202423399 U CN202423399 U CN 202423399U CN 2011205125857 U CN2011205125857 U CN 2011205125857U CN 201120512585 U CN201120512585 U CN 201120512585U CN 202423399 U CN202423399 U CN 202423399U
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- metal shell
- cell
- electrokinetic cell
- layer
- insulating
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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 utility model belongs to the technical field of power cells, and particularly relates to a secure metal shell power cell. The power cell comprises a power cell core and a metal shell containing the power cell core, wherein the internal surface of the metal shell is provided with an inner insulating layer, and the external surface of the metal shell is provided with an outer insulating layer. Compared with the prior art, the internal and external surfaces of the metal shell are provided with the insulating layers, and the insulativity of the individual battery metal shell is ensured when the metal shell power cells are connected in series so as to form a high-pressure system, decomposition and capacity effect of an electrolytic solution in the cell core caused by high voltage difference when the cell metal shells are mutually contacted can be effectively prevented, and a serial-parallel cell system is prevented from potential safety hazard appearing due to liquid conduction; and influence on cell property or occurrence of safety accidents caused by the electrification of the surface of the cell metal shell in a serial-parallel connection using process of the cell is avoided.
Description
Technical field
The utility model belongs to the power battery technology field, relates in particular to a kind of safe metal shell electrokinetic cell.
Background technology
Enhancing along with development of modern society and environmental consciousness; More and more equipments is selected with battery as power supply; Like notebook computer, smart mobile phone, MP3, electric automobile and energy-accumulating power station etc.; Wherein electric automobile and energy-accumulating power station have higher requirement to the capacity of battery, generally need to adopt jumbo electrokinetic cell.Another aspect; Electric automobile and energy-accumulating power station also have higher requirement to the security performance of battery; Generally adopt the metal shell electrokinetic cell at present, because than soft-package battery, metal shell has higher hardness and intensity; Driving process at power vehicle etc. has better impact resistance, therefore has good safety performance.
The metal shell electrokinetic cell generally comprises power electricity core and the metal shell (aluminum hull or box hat) that is used to hold electric core; Though this electrokinetic cell can provide enough energy for electronic equipment; But because battery metal shell when being connected into high-pressure system has charged risk on its surface, thereby causes between metal shell and electrode, forming high pressure owing to the conductive characteristic of himself; Make electric in-core portion electrolyte decomposition; And capacity effect might take place, thus battery performance influenced, even cause the generation of security incident; The radiator liquid conducting that the high pressure that forms between metal shell and the electrode in addition can make string and battery system adopt also potential safety hazard can occur.
In view of this, necessary provide a kind of have good safety can the metal shell electrokinetic cell.
The utility model content
The purpose of the utility model is: to the deficiency of prior art, and a kind of metal shell electrokinetic cell with good safety ability is provided.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of metal shell electrokinetic cell comprises power electricity core and the metal shell that holds said power electricity core, and the inner surface of said metal shell is provided with inner insulating layer, and the outer surface of said metal shell is provided with external insulation layer.The inner insulating layer of battery metal shell inner surface is used for and electrolyte and power electricity core insulation, and the external insulation layer of battery metal housing outer surface is used for and insulation such as outside adjacent electric core or liquid cooling cooling system.
With respect to prior art; The utility model is through being provided with insulating barrier at the metal shell surfaces externally and internally; Can guarantee the insulating properties of metal shell battery individual battery metal shell when being connected into high-pressure system; The decomposition and the capacity effect of the electric in-core portion electrolyte that effectively prevents cell metal shell voltage when the battery metal housing is in contact with one another from forming high voltage differential and cause far above battery plus-negative plate voltage, and can avoid going here and there and potential safety hazard that battery system occurs owing to the liquid conducting when adopting the liquid cools heat radiation; Guarantee that battery can not influence battery performance or security incident occur because of the battery metal surface of shell is charged in string and connection use.In addition, when short circuit appearred in single battery inside, battery metal shell surface insulation layer can be resisted the high temperature high electrical breakdown, and the external short circuit risk does not take place isolated problem battery protection adjacent cell.
As a kind of improvement of the utility model metal shell electrokinetic cell, the thickness of said inner insulating layer and external insulation layer is 0.1～10mm.When the thickness of insulating barrier less than 0.1mm, then insulation effect is not good, and is not obvious to the improvement effect of battery safety, when the thickness of insulating barrier greater than 10mm, then, can reduce the energy density of electrokinetic cell because insulating barrier has occupied more space.
As a kind of improvement of the utility model metal shell electrokinetic cell, said inner insulating layer is the insulating trip that frame is located at said metal shell inner surface.
As a kind of improvement of the utility model metal shell electrokinetic cell, said external insulation layer is the insulating trip that frame is located at said metal shell outer surface.Insulating trip adopts the high-temperature insulation sheet, and like the natural mica sheet, it can be located at the surfaces externally and internally of metal shell through bonding mode, also can make the size and the shape of mating with metal shell, and directly frame is located at the surfaces externally and internally of metal shell.
As a kind of improvement of the utility model metal shell electrokinetic cell, said inner insulating layer is the insulating coating that is coated on said metal shell inner surface.
As a kind of improvement of the utility model metal shell electrokinetic cell, said external insulation layer is the insulating coating that is coated on said metal shell outer surface.
As a kind of improvement of the utility model metal shell electrokinetic cell, said insulating coating is the coatings layer that is sprayed on the densification of said metal shell inner surface or outer surface, like spraying Teflon (PTFE).
As a kind of improvement of the utility model metal shell electrokinetic cell, said insulating coating is insulating passivation layer, insulated electro coating or the insulation electrophoretic paint layer of electrochemical treatments at said metal shell inner surface or outer surface.Directly form insulating barrier through electrochemical treatments at the inner surface and the outer surface of metal shell.
As a kind of improvement of the utility model metal shell electrokinetic cell, the thickness of said inner insulating layer and external insulation layer is identical.
As a kind of improvement of the utility model metal shell electrokinetic cell, the thickness of said inner insulating layer and external insulation layer is different.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the technical scheme of the utility model is done further description:
Fig. 1 is the structural representation of the utility model metal shell electrokinetic cell;
Fig. 2 is the end view of the utility model metal shell electrokinetic cell;
Fig. 3 is the enlarged drawing at A place among Fig. 2.
Embodiment
Below in conjunction with accompanying drawing the technical scheme of the utility model is done further elaboration: please with reference to Fig. 1, the metal shell electrokinetic cell of the utility model comprises power electricity core 1 and the metal shell 2 that holds said power electricity core 1.As shown in Figures 2 and 3, the inner surface of said metal shell 2 is provided with inner insulating layer 3, and outer surface is provided with external insulation layer 4.Inner insulating layer 3 can be one deck with external insulation layer 4, also can be for more than two-layer.The inner insulating layer 3 of battery metal housing 2 inner surfaces is used for and electrolyte and 1 insulation of power electricity core, and the external insulation layer 4 of battery metal housing 2 outer surfaces is used for and insulation such as outside adjacent electric core or liquid cooling cooling system.The thickness of inner insulating layer 3 and external insulation layer 4 is 0.1～10mm.
Inner insulating layer 3 also can be the insulating coating that is coated on said metal shell 2 inner surfaces, and external insulation layer 4 also can be the insulating coating that is coated on said metal shell 2 outer surfaces.Said insulating coating can preferably spray Teflon (PTFE) for being sprayed on the coatings layer of said metal shell 2 inner surfaces or outer surface; Also can be insulating passivation layer, insulated electro coating or the insulation electrophoretic paint layer of electrochemical treatments at said metal shell 2 inner surfaces or outer surface.
Wherein the thickness of inner insulating layer 3 and external insulation layer 4 can be identical, also can be different.
During actual assembled; Apply one deck inner insulating layer 3 at metal shell 2 inner surfaces earlier; Apply one deck external insulation layer 4 at metal shell 2 outer surfaces then and (can certainly apply one deck external insulation layer 4 at metal shell 2 outer surfaces earlier; Apply one deck inner insulating layer 3 at metal shell 2 inner surfaces then), the number of plies of insulating barrier can be one deck, also can be two-layer more than.Then the power electricity core 1 that assembles is placed in the metal shell 2, top cover is welded on the metal shell 2, accomplish the assembling of metal shell electrokinetic cell.
During actual assembled; Can also distinguish bonding insulating trip with high temperature resistant adhesive at the surfaces externally and internally of metal shell 2; Perhaps insulating trip is made framework in advance; The shape of framework, size and size and metal shell 2 mate, and then the insulating trip receptacle frame are located at the surfaces externally and internally of metal shell 2, realize the purpose of insulation.
According to the announcement and the instruction of above-mentioned specification, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the utility model is not limited to is in the protection range of the claim that also should fall into the utility model to some modifications and the change of the utility model.In addition, although used some specific terms in this specification, these terms are explanation for ease just, the utility model is not constituted any restriction.
Claims (10)
1. metal shell electrokinetic cell; Comprise power electricity core (1) and the metal shell (2) that holds the electric core of said power (1); It is characterized in that: the inner surface of said metal shell (2) is provided with inner insulating layer (3), and the outer surface of said metal shell (2) is provided with external insulation layer (4).
2. metal shell electrokinetic cell according to claim 1 is characterized in that: the thickness of said inner insulating layer (3) and external insulation layer (4) is 0.1～10mm.
3. metal shell electrokinetic cell according to claim 1 is characterized in that: said inner insulating layer (3) is located at the insulating trip of said metal shell (2) inner surface for frame.
4. metal shell electrokinetic cell according to claim 1 is characterized in that: said external insulation layer (4) is located at the insulating trip of said metal shell (2) outer surface for frame.
5. metal shell electrokinetic cell according to claim 1 is characterized in that: said inner insulating layer (3) is for being coated on the insulating coating of said metal shell (2) inner surface.
6. metal shell electrokinetic cell according to claim 1 is characterized in that: said external insulation layer (4) is for being coated on the insulating coating of said metal shell (2) outer surface.
7. according to claim 5 or 6 described metal shell electrokinetic cells, it is characterized in that: said insulating coating is for being sprayed on the coatings layer of said metal shell (2) inner surface or outer surface.
8. according to claim 5 or 6 described metal shell electrokinetic cells, it is characterized in that: said insulating coating is insulating passivation layer, insulated electro coating or the insulation electrophoretic paint layer of electrochemical treatments at said metal shell (2) inner surface or outer surface.
9. metal shell electrokinetic cell according to claim 1 is characterized in that: said inner insulating layer (3) is identical with the thickness of external insulation layer (4).
10. metal shell electrokinetic cell according to claim 1 is characterized in that: said inner insulating layer (3) is different with the thickness of external insulation layer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205125857U CN202423399U (en) | 2011-12-12 | 2011-12-12 | Metal shell power cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205125857U CN202423399U (en) | 2011-12-12 | 2011-12-12 | Metal shell power cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202423399U true CN202423399U (en) | 2012-09-05 |
Family
ID=46748129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205125857U Expired - Lifetime CN202423399U (en) | 2011-12-12 | 2011-12-12 | Metal shell power cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202423399U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280542A (en) * | 2013-04-01 | 2013-09-04 | 宜兴奕润新能源科技有限公司 | Lithium iron phosphate cell |
| CN115623726A (en) * | 2022-12-15 | 2023-01-17 | 深圳依源科技有限公司 | Power supply shell structure and power supply device |
| CN116826259A (en) * | 2023-08-18 | 2023-09-29 | 中创新航科技集团股份有限公司 | Battery and battery device |
| WO2023216223A1 (en) * | 2022-05-13 | 2023-11-16 | 宁德时代新能源科技股份有限公司 | Battery cell, battery unit, battery, and electric device |
-
2011
- 2011-12-12 CN CN2011205125857U patent/CN202423399U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280542A (en) * | 2013-04-01 | 2013-09-04 | 宜兴奕润新能源科技有限公司 | Lithium iron phosphate cell |
| CN103280542B (en) * | 2013-04-01 | 2015-09-23 | 蒋美娣 | A kind of ferric phosphate lithium cell |
| WO2023216223A1 (en) * | 2022-05-13 | 2023-11-16 | 宁德时代新能源科技股份有限公司 | Battery cell, battery unit, battery, and electric device |
| CN115623726A (en) * | 2022-12-15 | 2023-01-17 | 深圳依源科技有限公司 | Power supply shell structure and power supply device |
| CN116826259A (en) * | 2023-08-18 | 2023-09-29 | 中创新航科技集团股份有限公司 | Battery and battery device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
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| CX01 | Expiry of patent term |