CN204991821U - Secondary battery - Google Patents
Secondary battery Download PDFInfo
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- CN204991821U CN204991821U CN201520697083.4U CN201520697083U CN204991821U CN 204991821 U CN204991821 U CN 204991821U CN 201520697083 U CN201520697083 U CN 201520697083U CN 204991821 U CN204991821 U CN 204991821U
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- Prior art keywords
- insulating component
- cover plate
- recess
- hole
- protuberance
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a secondary battery. This secondary battery possesses the electrode body, tube -shape know how things stand and feel confident a box main part, apron, outside terminal, current collecting terminal and insulating component, is equipped with a plurality of convex parts on insulating component and the butt face apron butt, is equipped with a plurality of concave parts that correspond respectively with the convex part, concavity ground sink on the surface of apron, and insulating component is fixed on lapping under the state of insulating component's convex part and the concave part looks gomphosis of apron. Based on the utility model discloses a structure can improve prevention insulating component and lap pivoted system commentaries on classics effect relatively.
Description
Technical field
The utility model relates to secondary cell, particularly the structure of the cover plate that possesses of the battery case of secondary cell and insulating component.
Background technology
The positive terminal of secondary cell and negative terminal possess current-collecting terminals and outside terminal respectively.One end of current-collecting terminals is electrically connected with electrode body at battery inside; The other end of current-collecting terminals is electrically connected with outside terminal in battery case outside.Outside terminal is tabular component, has current-collecting terminals inserting hole, and the other end of current-collecting terminals and this inserting hole are riveted, thus realizes electrical connection between the two.The peristome of battery case is covered by cover plate, is configured with insulating component between cover plate and outside terminal.Insulating component fixedly maintains the bolt extended to outside outside terminal.
The recess that cover plate is provided with; Insulating component is provided with a protuberance, and under the state of this recess and protuberance tabling, insulating component is fixed on the cover board.Thereby, it is possible to there is (for example, referring to patent documentation 1) in the situation preventing insulating component from rotating centered by current-collecting terminals at the outer surface of cover plate.
But, in the secondary cell of above-mentioned prior art, when the other end of current-collecting terminals and outside terminal being riveted, pressing force can be applied to the insulating component be configured between outside terminal and cover plate.In addition, during with fastening bolts such as nuts, rotating torque can be applied to the insulating component that remain bolt.Consider these external force acting on insulating component, need to improve the system stoping insulating component to rotate further and turn effect, thus, the structure of prior art needs to be improved.
[patent documentation 1]: Japanese Unexamined Patent Publication 2010-282847 publication
Utility model content
For above-mentioned technical problem, the purpose of this utility model is, provides a kind of and can improve the secondary cell that the system stoping insulating component opposing cover plates to rotate turns effect.
As the technical scheme solved the problems of the technologies described above, the utility model provides a kind of secondary cell.This secondary cell possesses, electrode body; Hold the tubular box main body with the end of described electrode body; There is multiple through hole and the cover plate covered by the opening of described box main body; Outside terminal outstanding outside described cover plate; One end is connected with described electrode body in the inside of described box main body, the current-collecting terminals that the other end is inserted described through hole and is connected with described outside terminal; And the outer surface being configured in described cover plate makes electric insulation between described cover plate and described outside terminal, and be provided with the insulating component of the inserting hole that the other end of described current-collecting terminals is inserted, it is characterized in that: on the bearing surface abutted with described cover plate of described insulating component, be provided with multiple protuberance, the outer surface of described cover plate is provided with the multiple recesses corresponding, sagging in concave shape respectively with described multiple protuberance, and under the state of the protuberance of described insulating component and the recess tabling of described cover plate, described insulating component is fixed on described cover plate.
The advantage with the secondary cell of the present utility model of said structure is, due under the state that the multiple protuberances be located on insulating component are embedded in the multiple recesses established on the cover board, insulating component is fixed on the cover board, so can improve the system stoping insulating component opposing cover plates to rotate to turn effect.
In above-mentioned secondary cell of the present utility model, be preferably, be respectively arranged with a described protuberance in the both sides of the inserting hole of described insulating component, be respectively arranged with a described recess in the both sides of a through hole of described cover plate.Adopt this structure, because protuberance is located at the both sides of inserting hole, recess is located at the both sides of through hole, so the rotation produced centered by the through hole that can more effectively stop insulating component to be inserted by current-collecting terminals, thus improves the system stoping insulating component to rotate and turns effect.
Accompanying drawing explanation
Fig. 1 is the stereogram of the secondary cell representing execution mode of the present utility model.
Fig. 2 is the sectional view in the A-A cross section of the secondary cell representing Fig. 1.
Fig. 3 is the vertical view of the patch ends representing Fig. 2.
Fig. 4 is the vertical view of other embodiment of the patch ends represented in the secondary cell of Fig. 1.
Embodiment
Below, with reference to accompanying drawing, execution mode of the present utility model is described.
The secondary cell 1 of the execution mode shown in Fig. 1 possesses, at the battery case 2 of inner hold electrodes body (not shown); Outside terminal 5 outstanding outside battery case 2; Be configured in the insulating component 6 between outside terminal 5 and battery case 2; One end is connected with electrode body, and the other end 72 extends to the current-collecting terminals 7 outside battery case 2; And the bolt 8 extended to outside battery case 2.
Battery case 2 is hardwares of the systems such as aluminum or aluminum alloy, has box main body 3 and cover plate 4.Box main body 3 is configured to, top-open and rectangular shape with the end.Cover plate 4 is shape rectangular flat plate components corresponding with the opening of box main body 3, and the opening of box main body 3 covers by it, and is bonded on box main body 3.The electrode body (not shown) of battery case 2 inside is by by positive pole, negative pole and dividing plate lamination or be wound in electrode body and make its impregnation electrolyte and form.
As shown in Figure 2, on the cover plate 4 of battery case 2, be formed with the through hole 41 that the other end 72 of current-collecting terminals 7 is inserted.As shown in Figure 3, through hole 41 such as can be formed on the end part of the long side direction near cover plate 4.
The outer surface of cover plate 4 face of upside (in the Fig. 2) has, overlooks and turn recess 43 for rectangular system and system turns recess 44.System turns recess 43, system turns the both sides that recess 44 is arranged on through hole 41 respectively, and arranges along the long side direction of cover plate 4.In addition, system turns recess 43 and system and turns recess 44 and be formed, the concavity that the thickness direction to cover plate 4 sink.
Specifically, as shown in Figure 3, on cover plate 4, the both sides of a through hole 41 are respectively arranged with that system turns recess 43, system turns recess 44, in an end of cover plate 4, the system that the opening that the system of closer cover plate 4 middle part turns recess 43 is greater than closer cover plate 4 end turns the opening of recess 44.Meanwhile, in another end of cover plate 4, the system that is formed similarly turns recess 43 and system turns recess 44.
As depicted in figs. 1 and 2, insulating component 6 is configured in the outer surface of cover plate 4, makes electric insulation between cover plate 4 and outside terminal 5.Two ends of the long side direction of cover plate 4 are respectively arranged with insulating component 6.Each insulating component 6 comprises square portion 61 and flat part 62.The flat part 62 of insulating component 6 is formed the inserting hole 621 that the other end 72 of current-collecting terminals 7 is inserted.What the square portion 61 of insulating component 6 was formed the head 82 of maintenance bolt 8 has bottom outlet 611.
Bolt 8 is configured to, and axle portion 81 is towards outside cover plate 4.Insulating component 6 have the head 82 that accommodate bolt 8 in bottom outlet 611, axle portion 81 is retained as the state to insulating component 6 extension.
As shown in Figure 2, on insulating component 6, turn recess 43 with the system of cover plate 4, make and turn the corresponding position of recess 44, be formed respectively and can turn recess 43 with system, make the rectangle system turning recess 44 tabling and turn protuberance 63, make and turn protuberance 64.It is outstanding that system turns protuberance 63, system turns the bearing surface that protuberance 64 abuts with cover plate 4 from insulating component 6 respectively.Turn system corresponding to recess 43 with system to turn protuberance 63 and give prominence to from the bottom surface in square portion 61; Turning system corresponding to recess 44 with system, to turn protuberance 64 outstanding near the end of the bottom surface of flat part 62.
Thus, the system that is respectively equipped with in the both sides of the inserting hole 621 of insulating component 6 turns protuberance 63, system turns protuberance 64.These systems turn protuberance 63, system turns protuberance 64 and turns recess 43 respectively with the system of cover plate 4, makes and turn recess 44 tabling.Like this, insulating component 6 is located relative to cover plate 4 and is fixed.
Pad 42 is configured with at the inner face (face of the downside in Fig. 2) of cover plate 4.Pad 42 is made up of the material that High-Temperature Creep Performance is excellent, around the through hole 41 being configured in cover plate 4, makes electric insulation between the cover plate 4 of battery case 2 and current-collecting terminals 7.
One end of current-collecting terminals 7 positive plate with described electrode body inner at battery case 2 or negative plate are connected.The other end 72 of current-collecting terminals 7 is formed cylindrical, the through hole 41 of it is inserted (passing) cover plate 4 and extending to outside cover plate 4.Current-collecting terminals 7 plays and to be connected with outside terminal 5 outside battery case 2, and the electric energy stored by electrode body is outputted to outside or the electric energy of outside is input to the effect of transmission path of electrode body.
Outside terminal 5 is made up of conductivity tabular component, and the position, midway of its long side direction is bent and forms step.Outside terminal 5 is formed the inserting hole 51 and bolt insertion hole 52 that run through its thickness direction.The other end 72 of current-collecting terminals 7 is inserted and is riveted on inserting hole 51, thus makes to realize between outside terminal 5 with current-collecting terminals 7 being electrically connected.The axle portion 81 remaining on the bolt 8 on insulating component 6 inserts (passing) bolt insertion hole 52.
The other end 72 of current-collecting terminals 7, along from the direction to outside inside battery case 2, passes the inserting hole 51 of the cylindrical portion of pad 42, the through hole 41 of cover plate 4, the inserting hole 621 of insulating component 6 and outside terminal 5 successively.
When the other end 72 of current-collecting terminals 7 is riveted on outside terminal 5, apply pressure with riveting clamp (not shown) from the other end 72 of cover plate 4 lateral current-collecting terminals 7, the other end 72 of current-collecting terminals 7 is extended in the form of annular discsly.
Now, insulating component 6 bear from above and below pressing force.Relative to cover plate 4, insulating component 6 by through inserting hole 621 current-collecting terminals 7 and the system that is located at these inserting hole 621 both sides turns protuberance 63 and system turns protuberance 64 and is fixed.Therefore, the rotation of insulating component 6 centered by current-collecting terminals 7 can be prevented from effectively.Its result, insulating component 6 can not occurrence positions skew, damaged etc., can be fixed on correct position.
So, based on the secondary cell 1 of present embodiment, it is stably fixed on cover plate 4 due to the rotation of insulating component 6 can be stoped effectively, so, the riveted joint between current-collecting terminals 7 and outside terminal 5 can be carried out better, thus obtain the high product of reliability.
But secondary cell of the present utility model is not limited to the structure of above-mentioned execution mode, the change be suitable for can be carried out.Such as, as shown in Figure 4, also the system of cover plate 4 can be turned recess 43 and make and turn the same side that recess 44 is located at through hole 41.Meanwhile, turn corresponding to this system the configuration mode that recess 43 and system turn recess 44, and the system of insulating component 6 is turned protuberance 63 and system turns the same side that protuberance 64 is also located at inserting hole 621.So, the system of insulating component 6 turns protuberance 63, system turns protuberance 64 and turns recess 43 with the system of cover plate 4, make and turn recess 44 tabling respectively, can obtain and stop the system of insulating component 6 opposing cover plates 4 rotation to turn effect.
But, in the structure shown in Fig. 4, if the distance of center to the center of through hole 41 system being turned recess 43 is set as a; The distance of center to the center of through hole 41 that system turns recess 44 is set as b, then the arm of force of insulating component 6 opposing through-bores 41 to be equivalent to make in the center and through hole 41 turning recess 43 distance a in the heart.
To this, in the structure shown in Fig. 3, the arm of force of insulating component 6 opposing through-bores 41 is equivalent to, and the system of through hole 41 side turns the distance a of center to the center of through hole 41 of recess 43, turns the distance b sum (a+b) of center to the center of through hole 41 of recess 44 with the system of through hole 41 opposite side.
Visible, based on the structure shown in Fig. 3, the system that arranges respectively in the both sides of a through hole 41 turns recess 43, system turns recess 44, can obtain better to make than the structure shown in Fig. 4 to turn effect.
Claims (2)
1. a secondary cell, possesses
Electrode body;
Hold the tubular box main body with the end of described electrode body;
There is multiple through hole and the cover plate covered by the opening of described box main body;
Outside terminal outstanding outside described cover plate;
One end is connected with described electrode body in the inside of described box main body, the current-collecting terminals that the other end is inserted described through hole and is connected with described outside terminal; And
The outer surface being configured in described cover plate makes electric insulation between described cover plate and described outside terminal, and is provided with the insulating component of the inserting hole that the other end of described current-collecting terminals is inserted, and it is characterized in that:
The bearing surface abutted with described cover plate of described insulating component is provided with multiple protuberance, the outer surface of described cover plate is provided with the multiple recesses corresponding, sagging in concave shape respectively with described multiple protuberance,
Under the state of the protuberance of described insulating component and the recess tabling of described cover plate, described insulating component is fixed on described cover plate.
2. secondary cell as claimed in claim 1, is characterized in that:
A described protuberance is respectively arranged with in the both sides of the inserting hole of described insulating component,
A described recess is respectively arranged with in the both sides of a through hole of described cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520697083.4U CN204991821U (en) | 2015-09-09 | 2015-09-09 | Secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520697083.4U CN204991821U (en) | 2015-09-09 | 2015-09-09 | Secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204991821U true CN204991821U (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520697083.4U Active CN204991821U (en) | 2015-09-09 | 2015-09-09 | Secondary battery |
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| Country | Link |
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| CN (1) | CN204991821U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134559A (en) * | 2016-02-29 | 2017-09-05 | 三洋电机株式会社 | Secondary cell and battery pack |
| CN108232052A (en) * | 2016-12-09 | 2018-06-29 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| WO2019174086A1 (en) * | 2018-03-16 | 2019-09-19 | 宁德时代新能源科技股份有限公司 | Output electrical connection piece and battery module comprising output electrical connection piece |
-
2015
- 2015-09-09 CN CN201520697083.4U patent/CN204991821U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134559A (en) * | 2016-02-29 | 2017-09-05 | 三洋电机株式会社 | Secondary cell and battery pack |
| CN107134559B (en) * | 2016-02-29 | 2021-06-08 | 三洋电机株式会社 | Secondary battery and battery pack |
| CN108232052A (en) * | 2016-12-09 | 2018-06-29 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN108232052B (en) * | 2016-12-09 | 2020-12-11 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| WO2019174086A1 (en) * | 2018-03-16 | 2019-09-19 | 宁德时代新能源科技股份有限公司 | Output electrical connection piece and battery module comprising output electrical connection piece |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |