CN202495544U - Power battery - Google Patents
Power battery Download PDFInfo
- Publication number
- CN202495544U CN202495544U CN2012200467284U CN201220046728U CN202495544U CN 202495544 U CN202495544 U CN 202495544U CN 2012200467284 U CN2012200467284 U CN 2012200467284U CN 201220046728 U CN201220046728 U CN 201220046728U CN 202495544 U CN202495544 U CN 202495544U
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- CN
- China
- Prior art keywords
- battery
- housing
- electrokinetic cell
- electric core
- cell
- 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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model belongs to the technical field of power batteries and particularly relates to a power battery of an arc structure. The power battery comprises a cell, a casing for containing the cell, electrolyte poured into the casing and a battery top cover arranged on the casing in sealing mode, wherein a positive pole lug and a negative pole lug are arranged at the front end of the cell, and the cell, the casing and the battery top cover are respectively arc-shaped. Compared with the prior art, the power battery can bear larger pressure without ballooning or deforming compared with a square battery, and a battery pack formed by assembling the arc-shaped batteries is larger in available space compared with a cylindrical battery, and therefore the power battery can reduce battery deformation and further consider space use ratio. In addition, the utility model further discloses a power battery pack comprising the power battery.
Description
Technical field
The utility model belongs to the power battery technology field, relates in particular to a kind of arc electrokinetic cell, and the power battery pack that comprises this electrokinetic cell.
Background technology
Enhancing along with development of modern society and people's environmental consciousness; More and more equipments is selected with chargeable secondary cell as power supply; Like mobile phone, notebook computer, electric tool, electric automobile and energy-accumulating power station or the like, this application for chargeable secondary cell provides wide space with development.
Electric automobile and energy-accumulating power station etc. generally need to use to have jumbo electrokinetic cell as power supply.These electrokinetic cells also should have good fail safe except having high power capacity, just can reach the standard and the demand that satisfies people of use.
The available dynamic battery generally adopts square structure, to improve the space availability ratio of battery pack.But lithium-ion-power cell is in charge and discharge process, and electric in-core portion can produce gas, causes inside battery air pressure to strengthen, the rectangular cell housing since around unbalance stress, cause bulging in the middle of the battery container.And our battery pack is often because the problem of dimensional space is all only understood smaller at interval distance between battery and the battery.In battery operated process, because battery producing gas expands, two batteries have the risk of contact, cause bigger potential safety hazard like this.
In order to solve battery container bulging problem, the part electrokinetic cell adopts cylindrical structural because cylinder receive under the situation of same pressure in inside around stressed evenly, be out of shape little.But, cylindrical battery parallel connection or when being composed in series battery pack, space availability ratio is very low.
In view of this, necessaryly provide a kind of and can reduce battery distortion and can take into account the electrokinetic cell of space availability ratio again, and the power battery pack that comprises this electrokinetic cell.
The utility model content
One of purpose of the utility model is: to the deficiency of prior art, and provide one one kinds can reduce the electrokinetic cell that the battery distortion can take into account space availability ratio.
To achieve these goals, the technical scheme of the utility model employing is:
A kind of electrokinetic cell; Comprise electric core, hold said electric core housing, be poured into the electrolyte in the said housing; And be seal-installed on the battery cap on the housing, and said electric core front end is provided with positive pole ear and negative lug, and said electric core, housing and battery cap are arc.Wherein, housing and battery cap all are to be processed by materials such as aluminium or stainless steels.
According to mechanics principle, any one object will produce distortion, will apply on it effectively earlier, and object intensity is enough big if power is little, and then object can not be out of shape or be out of shape small.In addition, stainless steel or aluminium sheet all have certain tensile property, when it is stretched to certain size, just need very big power to be pulled to very little distortion to it, and break it then needs enough big power.
The utility model has utilized above two principles just because the arc battery has the housing concave surface, housing pre-stretching itself certain size, just need very big power so will be out of shape again; The housing convex surface of arc battery then has big a lot of intensity with respect to the plane, can bear bigger power.Though lithium-ion-power cell is the meeting aerogenesis in the course of the work, causes the increase of inside battery air pressure, air pressure can be very not big under the normal operation.So according to the battery of different size different capabilities size, the arc battery container can well solve housing bulging problem on deformation through selecting different radian and thickness of shell.
In addition, what the arc battery also can be compact is arranged in a row, and space availability ratio is bigger.
With respect to prior art, the utility model is compared housing with rectangular cell can bear the not bulging distortion of bigger air pressure; Compare with cylindrical battery, the battery pack that the arc battery pack is dressed up space capable of using is bigger.
As a kind of improvement of the utility model electrokinetic cell, the radian of said electric core, housing and battery cap equates.
As a kind of improvement of the utility model electrokinetic cell, the radian of said electric core, housing and battery cap is 0～2 π.
As a kind of improvement of the utility model electrokinetic cell, the radian of said electric core, housing and battery cap is 0～1.5 π.
As a kind of improvement of the utility model electrokinetic cell, the radian of said electric core, housing and battery cap is 0.15 π.Electrokinetic cell with this radian can be taken into account the effect that reduces the battery distortion and increase space availability ratio best.
As a kind of improvement of the utility model electrokinetic cell, said battery cap is provided with positive terminal, negative terminal and liquid injection hole.
As a kind of improvement of the utility model electrokinetic cell, said positive pole ear and said positive terminal are electrically connected, and said negative lug is electrically connected with said negative terminal.
As a kind of improvement of the utility model electrokinetic cell, said battery cap is connected through laser welding with said housing.
Another purpose of the utility model is to provide a kind of power battery pack, comprises at least two electrokinetic cells and the cell connector that is used to be connected said electrokinetic cell, and said electrokinetic cell is the described electrokinetic cell of above-mentioned paragraph item.
With respect to prior art, when the arc electrokinetic cell of the utility model is assembled into battery pack,, need not to consider the space of battery flatulence distortion as long as stay less fit-up gap between battery and the battery, the battery pack assemble case is bigger with the space.
Description of drawings
Fig. 1 is the perspective view of the utility model electrokinetic cell;
Fig. 2 is the explosive view of the utility model electrokinetic cell;
Fig. 3 is the perspective view of the utility model power battery pack.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
As depicted in figs. 1 and 2; The utility model electrokinetic cell; Comprise electric core 1, hold said electric core 1 housing 2, be poured into the electrolyte in the said housing 2; And be seal-installed on the battery cap 3 on the housing 2, and said electric core 1 front end is provided with positive pole ear 11 and negative lug 12, and said electric core 1, housing 2 and battery cap 3 are arc.Wherein, housing 2 all is to be processed by materials such as aluminium or stainless steels with battery cap 3.
Wherein, the radian of said electric core 1, housing 2 and battery cap 3 equates, the radian of said electric core 1, housing 2 and battery cap 3 is 0～2 π, is preferably 0～1.5 π, more preferably 0.15 π.
Said battery cap 3 is provided with positive terminal 31, negative terminal 32 and liquid injection hole 33.
Said positive pole ear 11 is electrically connected with said positive terminal 31, and said negative lug 12 is electrically connected with said negative terminal 32.
Said battery cap 3 and said housing 2 are connected through laser welding.
Below in conjunction with Fig. 2, describe the assembling process of the utility model electrokinetic cell in detail:
At first, arc electricity core 1 is positioned in the arc shell 2; Then, perfusion electrolyte in arc shell 2; At last, top cover 3 is installed on the top of arc shell 2 through laser welded seal.During use, an end of positive terminal 31 and negative terminal 32 and arc electricity core 1 electrically connect, and the other end is connected with external circuit.
Different with prior art, the electrokinetic cell outward appearance of the utility model is curved, compares its housing with rectangular cell and can bear the not bulging distortion of bigger air pressure; With the cylindrical battery ratio, arc battery pack packed battery group space capable of using is bigger.
As shown in Figure 3; A kind of power battery pack; Comprise at least two electrokinetic cells and the cell connector 4 that is used to be connected said electrokinetic cell, said electrokinetic cell comprises electric core 1, holds the housing 2 of said electric core 1, is poured into the electrolyte in the said housing 2, and is seal-installed on the battery cap 3 on the housing 2; Said electric core 1 front end is provided with positive pole ear 11 and negative lug 12, and said electric core 1, housing 2 and battery cap 3 are arc.
When the electrokinetic cell that above-mentioned assembling is obtained is assembled into battery pack,, need not to consider the space of battery flatulence distortion, but battery pack assembling body and function space is bigger as long as stay less fit-up gap between battery and the battery.And the electrokinetic cell of the utility model, because of its shape camber, intensity is good, and the air pressure inside that ability is bigger is indeformable, prevents battery aerogenesis bulging in the course of the work, well improves the security performance of battery pack.
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 (9)
1. electrokinetic cell; Comprise electric core, hold said electric core housing, be poured into the electrolyte in the said housing; And be seal-installed on the battery cap on the housing; Said electric core front end is provided with positive pole ear and negative lug, it is characterized in that: said electric core, housing and battery cap are arc.
2. electrokinetic cell according to claim 1 is characterized in that: the radian of said electric core, housing and battery cap equates.
3. electrokinetic cell according to claim 2 is characterized in that: the radian of said electric core, housing and battery cap is 0～2 π.
4. electrokinetic cell according to claim 3 is characterized in that: the radian of said electric core, housing and battery cap is 0～1.5 π.
5. electrokinetic cell according to claim 4 is characterized in that: the radian of said electric core, housing and battery cap is 0.15 π.
6. electrokinetic cell according to claim 1 is characterized in that: said battery cap is provided with positive terminal, negative terminal and liquid injection hole.
7. electrokinetic cell according to claim 6 is characterized in that: said positive pole ear and said positive terminal are electrically connected, and said negative lug is electrically connected with said negative terminal.
8. electrokinetic cell according to claim 1 is characterized in that: said battery cap is connected through laser welding with said housing.
9. a power battery pack comprises at least two electrokinetic cells and the cell connector that is used to be connected said electrokinetic cell, it is characterized in that: said electrokinetic cell is each described electrokinetic cell of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200467284U CN202495544U (en) | 2012-02-14 | 2012-02-14 | Power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200467284U CN202495544U (en) | 2012-02-14 | 2012-02-14 | Power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202495544U true CN202495544U (en) | 2012-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200467284U Expired - Lifetime CN202495544U (en) | 2012-02-14 | 2012-02-14 | Power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202495544U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183864A (en) * | 2014-08-29 | 2014-12-03 | 天津力神电池股份有限公司 | Arc-shaped lithium ion battery and clamp for enabling battery to enter shell |
| EP2897192A1 (en) * | 2014-01-20 | 2015-07-22 | Samsung SDI Co., Ltd. | Curved secondary battery |
| WO2018126438A1 (en) * | 2017-01-06 | 2018-07-12 | 宁德时代新能源科技股份有限公司 | Power battery top cover structure, power battery and battery module |
| WO2018126439A1 (en) * | 2017-01-06 | 2018-07-12 | 宁德时代新能源科技股份有限公司 | Power battery cover structure, power battery, and battery module |
| WO2022205189A1 (en) * | 2021-03-31 | 2022-10-06 | 宁德新能源科技有限公司 | Battery and electronic device |
-
2012
- 2012-02-14 CN CN2012200467284U patent/CN202495544U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2897192A1 (en) * | 2014-01-20 | 2015-07-22 | Samsung SDI Co., Ltd. | Curved secondary battery |
| CN104795585A (en) * | 2014-01-20 | 2015-07-22 | 三星Sdi株式会社 | Curved secondary battery |
| US9780342B2 (en) | 2014-01-20 | 2017-10-03 | Samsung Sdi Co., Ltd. | Curved secondary battery |
| CN104795585B (en) * | 2014-01-20 | 2020-07-28 | 三星Sdi株式会社 | Curved secondary battery |
| CN104183864A (en) * | 2014-08-29 | 2014-12-03 | 天津力神电池股份有限公司 | Arc-shaped lithium ion battery and clamp for enabling battery to enter shell |
| WO2018126438A1 (en) * | 2017-01-06 | 2018-07-12 | 宁德时代新能源科技股份有限公司 | Power battery top cover structure, power battery and battery module |
| WO2018126439A1 (en) * | 2017-01-06 | 2018-07-12 | 宁德时代新能源科技股份有限公司 | Power battery cover structure, power battery, and battery module |
| CN109937494A (en) * | 2017-01-06 | 2019-06-25 | 宁德时代新能源科技股份有限公司 | Top cover structure of power battery, power battery and battery modules |
| CN109937494B (en) * | 2017-01-06 | 2021-09-17 | 宁德时代新能源科技股份有限公司 | Power battery top cover structure, power battery and battery module |
| WO2022205189A1 (en) * | 2021-03-31 | 2022-10-06 | 宁德新能源科技有限公司 | Battery and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210527 Address after: No.1, Xinghui Road, Songshanhu Park, Dongguan, Guangdong 523000 Patentee after: Dongguan xinneng'an Technology Co.,Ltd. Address before: 523808, No. 1 Industrial West Road, Songshan Industrial Park, Dongguan, Guangdong Patentee before: Dongguan Amperex Technology Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |
|
| CX01 | Expiry of patent term |