CN205429058U - Secondary battery - Google Patents
Secondary battery Download PDFInfo
- Publication number
- CN205429058U CN205429058U CN201620210527.1U CN201620210527U CN205429058U CN 205429058 U CN205429058 U CN 205429058U CN 201620210527 U CN201620210527 U CN 201620210527U CN 205429058 U CN205429058 U CN 205429058U
- Authority
- CN
- China
- Prior art keywords
- electrical connection
- connection section
- pole
- lug
- naked battery
- 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.)
- Withdrawn - After Issue
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Classifications
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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, it includes top cap, two at least naked electric cores and switching piece. The top cap is provided with the utmost point post that the electric polarity is opposite. Each naked electric core has the utmost point ear that the electric polarity is opposite. The switching piece has: utmost point post electricity connecting portion for be connected with the utmost point post electricity of the counter electrode nature of top cap, a plurality of utmost point ears electricity connecting portion for the electric polarity identical's of the utmost point post is connected with utmost point post electricity connecting portion electricity the utmost point ear electricity connection that corresponds naked electric core, and a plurality of fuse part, the utmost point ear electricity connecting portion that each fuse part will correspond are connected in utmost point post electricity connecting portion, and each fuse part's width is less than the width of utmost point post electricity connecting portion. This kind of simple structure of switching piece, the heat that can reduce whole battery amounts to, has reduced the temperature rise. During the short circuit, fuse part is in time fused in one of them naked electric core takes place, can cut off electric connection the between the utmost point post of this naked electric core and top cap fast to prevented that other naked electric cores from to the influence of this naked electric core, having reduced the probability of failure of naked electric core.
Description
Technical field
This utility model relates to field of batteries, particularly relates to a kind of secondary cell.
Background technology
In the prior art, secondary cell includes top cover 1, at least one naked battery core 2 and switching piece 3.Switching piece 3 has: lug electrical connection section 31, for electrically connecting (such as by welding) with the corresponding lug 21 of naked battery core 2；Pole electrical connection section 32, longitudinally connected in lug electrical connection section 31 along switching piece 3, and for electrically connecting (such as by welding) with the corresponding pole 11 of top cover 1, so that lug 21 corresponding with naked battery core 2 for corresponding pole 11 is electrically connected；And transition part 33, between lug electrical connection section 31 and pole electrical connection section 32 and connecting tab electrical connection section 31 and pole electrical connection section 32.In this secondary cell, when naked battery core 2 internal generation thermal runaway, the transition part 33 being usually between lug electrical connection section 31 and pole electrical connection section 32 first fuses, thus the connection between the naked battery core of breaking inner 2 and outside pole and aluminum hull, and then disconnect and outside path, but the electrical connection between the naked battery core 2 of parallel connection can not be disconnected.Such as, wherein when one of them naked battery core 2 takes the lead in occurring internal short-circuit, then other naked battery core 2 can carry out reverse charge to this naked battery core 2, the short circuit current making this naked battery core 2 is bigger, producing more heat, temperature rise increases, thus is easier to cause this naked battery core 2 to produce thermal runaway.
Utility model content
In view of problem present in background technology, a purpose of the present utility model is to provide a kind of secondary cell, and it can reduce the heat accumulation of battery, reduce temperature rise.
Another purpose of the present utility model is to provide a kind of secondary cell, its can wherein a naked battery core generation internal short-circuit time, cut off the electrical connection of this naked battery core and the pole of top cover in time, it is therefore prevented that other naked battery core impact on this naked battery core, reduce the failure probability of naked battery core.
To achieve these goals, this utility model provides a kind of secondary cell, and it includes the naked battery core of top cover, at least two and switching piece.Top cover is provided with the pole that electric polarity is contrary.Each naked battery core has the lug that electric polarity is contrary.Switching piece has: pole electrical connection section, and the pole for the counter electrode with top cover electrically connects；Multiple lug electrical connection sections, the most consistent with naked battery core, and be separated from each other, for the lug electrical connection of the correspondence naked battery core identical with the electric polarity of the pole of pole electrical connection section electrical connection；And multiple fuse part, the most consistent with lug electrical connection section, corresponding lug electrical connection section is connected to pole electrical connection section by each fuse part, and the width of each fuse part is less than the width of pole electrical connection section.
The beneficial effects of the utility model are as follows:
According in secondary cell of the present utility model, multiple lug electrical connection sections of switching piece are electrically connected to the lug of corresponding naked battery core, pole electrical connection section is electrically connected to the pole of the counter electrode of top cover, and multiple fuse part is electrically connected to lug electrical connection section and the pole electrical connection section of correspondence, thus by the pole of counter electrode and the lug electrical connection of the naked battery core of the correspondence identical with its electric polarity.This simple in construction of switching piece, the width of fuse part based on switching piece, less than the width of pole electrical connection section, therefore, it is possible to reduce the heat accumulation of whole battery, reduces temperature rise.Such as, when one of them naked battery core generation internal short-circuit, fuse part is blown in time, can electrical connection between fast shut-off this naked battery core and pole of top cover, thus prevent other naked battery core impact on this naked battery core, reduce the failure probability of naked battery core.
Accompanying drawing explanation
Fig. 1 is the top view of the switching piece of secondary cell of the prior art；
Fig. 2 is that secondary cell of the prior art uses the switching piece in Fig. 1 to electrically connect schematic diagram with the lug entirety of the pole of top cover, naked battery core；
Fig. 3 is the top view of an embodiment of the switching piece according to secondary cell of the present utility model；
Fig. 4 is that secondary cell of the present utility model uses the switching piece in Fig. 3 to electrically connect schematic diagram with the lug entirety of the pole of top cover, naked battery core；
Fig. 5 is the top view of the another embodiment of the switching piece according to secondary cell of the present utility model；
Fig. 6 is the axonometric chart of the switching piece in Fig. 5；
Fig. 7 is the top view of the another embodiment of the switching piece according to secondary cell of the present utility model.
Wherein, description of reference numerals is as follows:
1 top cover d3 width
11 pole 34 grooves
2 naked battery core 35 transition parts
21 lug d5 width
3 switching piece L length directions
31 lug electrical connection section H thickness directions
32 pole electrical connection section W widths
D2 width C central shaft
33 fuse part
Detailed description of the invention
Describe in detail with reference to the accompanying drawings according to secondary cell of the present utility model.
Referring to figs. 1 through Fig. 7, include the naked battery core of top cover 1, at least two 2 and switching piece 3 according to secondary cell of the present utility model.Top cover 1 is provided with the contrary pole of electric polarity 11.Each naked battery core 2 has the contrary lug of electric polarity 21.Switching piece 3 has: pole electrical connection section 32, and the pole 11 for the counter electrode with top cover 1 electrically connects；Multiple lug electrical connection sections 31, the most consistent with naked battery core 2, and be separated from each other, the lug 21 for the correspondence naked battery core 2 identical with the electric polarity of the pole 11 of pole electrical connection section 32 electrical connection electrically connects；And multiple fuse part 33, the most consistent with lug electrical connection section 31, corresponding lug electrical connection section 31 is connected to pole electrical connection section 32 by each fuse part 33, and the width d3 of each fuse part 33 is less than the width d2 of pole electrical connection section 32.
According in secondary cell of the present utility model, multiple lug electrical connection sections 31 of switching piece 3 are electrically connected to the lug 21 of corresponding naked battery core 2, pole electrical connection section 32 is electrically connected to the pole 11 of the counter electrode of top cover 1, and multiple fuse part 33 is electrically connected to lug electrical connection section 31 and the pole electrical connection section 32 of correspondence, thus the pole 11 of counter electrode and the lug 21 of the naked battery core of the correspondence identical with its electric polarity 2 are electrically connected.This simple in construction of switching piece 3, the width d3 of fuse part 33 based on switching piece 3, less than the width d2 of pole electrical connection section 32, therefore, it is possible to reduce the heat accumulation of whole battery, reduces temperature rise.Such as, when one of them naked battery core 2 occurs internal short-circuit, fuse part 33 is blown in time, can electrical connection between fast shut-off this naked battery core 2 and pole 11 of top cover 1, thus prevent other naked battery core 2 impact on this naked battery core 2, reduce the failure probability of naked battery core 2.
According to secondary cell of the present utility model, in one embodiment, with reference to Fig. 4, naked battery core 2 can be two, and the lug electrical connection section 31 of switching piece 3 can be two, and two naked battery cores 2 are connected in parallel in switching piece 3.
In one embodiment, with reference to Fig. 4, two naked battery cores 2 are symmetrical relative to parallel for the length direction L vertical central axis C with switching piece 3.
In one embodiment, with reference to Fig. 3 to Fig. 6, switching piece 3 through can be provided with groove 34, groove 34 between two lug electrical connection sections 31, through-thickness H through and along vertical central axis C extend and in the side away from pole electrical connection section 32 of two lug electrical connection sections 31 open wide, so that two lug electrical connection sections 31 are separated.At switching piece 3, groove 34 is set, it is to make each lug electrical connection section 31 only be electrically connected to the pole 11 of top cover 1 at one end through corresponding fuse part 33, during so that there is internal short-circuit in a naked battery core 2 wherein, the fuse part 33 that fusing is corresponding in time, thus the electrical connection between fast shut-off this naked battery core 2 and pole 11 of top cover 1.
Here remarking additionally, the direction both perpendicular to thickness direction H and length direction L is width W (such as Fig. 1 to Fig. 7).
In one embodiment, with reference to Fig. 3, Fig. 4 and Fig. 7, switching piece 3 also has: transition part 35, between pole electrical connection section 32 and two lug electrical connection sections 31, with connecting post electrical connection section 32 and lug electrical connection section 31, the width d5 of transition part 35 is less than the width d5 of transition part 35 less than the width d2, the width d3 of fuse part 33 of pole electrical connection section 32.Owing to the width d3 of fuse part 33 is minimum, therefore when one of them naked battery core 2 occurs internal short-circuit, the fuse part 33 of this naked battery core 2 correspondence is blown at first, thus has cut off the electrical connection between this naked battery core 2 and pole 11 of top cover 1 in time, reduces the failure probability of naked battery core 2.
In one embodiment, with reference to Fig. 7, naked battery core 2 can be two or more, and all naked battery cores 2 are connected in parallel in switching piece 3, and the width d3 summation of all fuse part 33 is less than the width d2 of pole electrical connection section 32.So, width d2 due to pole electrical connection section 32 is more than the width d3 summation of all fuse part 33, when there is internal short-circuit in a naked battery core 2 the most wherein, do not have other naked battery core 2 and the naked battery core 2 of this internal short-circuit is carried out the situation of reverse charge, thus can avoid the naked battery core 2 of this internal short-circuit that thermal runaway occurs.
In one embodiment, the width d3 of each fuse part 33 is equal or different.
In one embodiment, lug electrical connection section 31 can be electrically connected by ultra-sonic welded with the corresponding lug 21 of naked battery core 2.The most not only limit so, also can use other electric connection mode.
In one embodiment, pole electrical connection section 32 can be electrically connected by laser welding with the corresponding pole 11 of top cover 1.The most not only limit so, also can use other electric connection mode.
In one embodiment, switching piece 3 can be single or multiple lift sheet metal.Further, when switching piece 3 is multilayered metal film, the thickness of multilayered metal film may be the same or different.
In one embodiment, a lug 21 of naked battery core 2 can sandwich between any two-layer of the multilayered metal film of switching piece 3.
Finally remarking additionally, except as otherwise noted, switching piece 3, lug 21, pole 11 etc. are electric conductivity.Further, switching piece 3, lug 21, pole 11 can be made of metal.
Claims (10)
1. a secondary cell, including:
Top cover (1), is provided with the contrary pole of electric polarity (11)；
The naked battery core of at least two (2), each naked battery core (2) has the contrary lug of electric polarity (21)；
It is characterized in that, described secondary cell also includes:
Switching piece (3), has:
Pole electrical connection section (32), the pole (11) for the counter electrode with top cover (1) electrically connects；
Multiple lug electrical connection sections (31), the most consistent with naked battery core (2), and be separated from each other, for lug (21) electrical connection of the correspondence naked battery core (2) identical with the electric polarity of the pole (11) that pole electrical connection section (32) electrically connects；And
Multiple fuse part (33), the most consistent with lug electrical connection section (31), corresponding lug electrical connection section (31) is connected to pole electrical connection section (32) by each fuse part (33), and the width (d3) of each fuse part (33) is less than the width (d2) of pole electrical connection section (32).
Secondary cell the most according to claim 1, it is characterised in that
Naked battery core (2) is two, and the lug electrical connection section (31) of switching piece (3) is two, and two naked battery cores (2) are connected in parallel in switching piece (3).
Secondary cell the most according to claim 2, it is characterised in that two naked battery cores (2) are symmetrical relative to the vertical central axis (C) parallel with the length direction of switching piece (3) (L).
Secondary cell the most according to claim 2, it is characterised in that
Switching piece (3) is through is provided with groove (34), groove (34) is positioned between two lug electrical connection sections (31), through-thickness (H) is through and extends along vertical central axis (C) and opens wide in the side away from pole electrical connection section (32) of two lug electrical connection sections (31), two lug electrical connection sections (31) to be separated.
Secondary cell the most according to claim 4, it is characterised in that switching piece (3) also has:
Transition part (35), it is positioned between pole electrical connection section (32) and two lug electrical connection sections (31), with connecting post electrical connection section (32) and lug electrical connection section (31), the width (d5) of transition part (35) is less than the width (d2) of pole electrical connection section (32), and the width (d3) of fuse part (33) is less than the width (d5) of transition part (35).
Secondary cell the most according to claim 1, it is characterised in that
Naked battery core (2) is two or more, and all naked battery cores (2) are connected in parallel in switching piece (3)；
Width (d3) summation of all fuse part (33) is less than the width (d2) of pole electrical connection section (32).
Secondary cell the most according to claim 6, it is characterised in that the width (d3) of each fuse part (33) is equal or different.
Secondary cell the most according to claim 1, it is characterised in that lug electrical connection section (31) is electrically connected by ultra-sonic welded with the corresponding lug (21) of naked battery core (2).
Secondary cell the most according to claim 1, it is characterised in that pole electrical connection section (32) is electrically connected by laser welding with the corresponding pole (11) of top cover (1).
Secondary cell the most according to claim 1, it is characterised in that switching piece (3) is single or multiple lift sheet metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620210527.1U CN205429058U (en) | 2016-03-18 | 2016-03-18 | Secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620210527.1U CN205429058U (en) | 2016-03-18 | 2016-03-18 | Secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205429058U true CN205429058U (en) | 2016-08-03 |
Family
ID=56519254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620210527.1U Withdrawn - After Issue CN205429058U (en) | 2016-03-18 | 2016-03-18 | Secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205429058U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204419A (en) * | 2016-03-18 | 2017-09-26 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN108922993A (en) * | 2018-08-14 | 2018-11-30 | 江苏海基新能源股份有限公司 | The rectangular winding multi-pole lug lithium ion battery of one kind and its assembly method |
| CN109659481A (en) * | 2018-12-24 | 2019-04-19 | 湖北金泉新材料有限责任公司 | A kind of battery core connection sheet, battery and assemble method |
| US10586971B2 (en) | 2016-12-02 | 2020-03-10 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| US10601023B2 (en) | 2016-12-02 | 2020-03-24 | Contemporary Amperex Technology Co., Limited | Secondary battery and assembly therefor |
| US10916756B2 (en) | 2016-12-02 | 2021-02-09 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| JP2022137297A (en) * | 2017-02-27 | 2022-09-21 | 三洋電機株式会社 | Square secondary battery |
| CN115377620A (en) * | 2022-08-11 | 2022-11-22 | 天能新能源(湖州)有限公司 | Electrode switching piece and battery tab switching structure |
| CN115911775A (en) * | 2023-02-09 | 2023-04-04 | 深圳海润新能源科技有限公司 | Current collecting component, energy storage device and electric equipment |
-
2016
- 2016-03-18 CN CN201620210527.1U patent/CN205429058U/en not_active Withdrawn - After Issue
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204419A (en) * | 2016-03-18 | 2017-09-26 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN107204419B (en) * | 2016-03-18 | 2023-07-11 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| US11121436B2 (en) | 2016-12-02 | 2021-09-14 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| US10586971B2 (en) | 2016-12-02 | 2020-03-10 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| US10601023B2 (en) | 2016-12-02 | 2020-03-24 | Contemporary Amperex Technology Co., Limited | Secondary battery and assembly therefor |
| US10916756B2 (en) | 2016-12-02 | 2021-02-09 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| US11296391B2 (en) | 2016-12-02 | 2022-04-05 | Contemporary Amperex Technology Co., Limited | Secondary battery and assembly therefor |
| US11557816B2 (en) | 2016-12-02 | 2023-01-17 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| JP2022137297A (en) * | 2017-02-27 | 2022-09-21 | 三洋電機株式会社 | Square secondary battery |
| CN108922993A (en) * | 2018-08-14 | 2018-11-30 | 江苏海基新能源股份有限公司 | The rectangular winding multi-pole lug lithium ion battery of one kind and its assembly method |
| CN109659481A (en) * | 2018-12-24 | 2019-04-19 | 湖北金泉新材料有限责任公司 | A kind of battery core connection sheet, battery and assemble method |
| CN109659481B (en) * | 2018-12-24 | 2022-04-12 | 湖北亿纬动力有限公司 | Battery cell connecting sheet, battery and assembling method |
| CN115377620A (en) * | 2022-08-11 | 2022-11-22 | 天能新能源(湖州)有限公司 | Electrode switching piece and battery tab switching structure |
| CN115911775A (en) * | 2023-02-09 | 2023-04-04 | 深圳海润新能源科技有限公司 | Current collecting component, energy storage device and electric equipment |
| US11962045B1 (en) | 2023-02-09 | 2024-04-16 | Shenzhen Hithium Energy Storage Technology Co., Ltd. | Energy storage device and power consuming apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160803 Effective date of abandoning: 20230711 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160803 Effective date of abandoning: 20230711 |