CN206742372U - Secondary cell - Google Patents
Secondary cell Download PDFInfo
- Publication number
- CN206742372U CN206742372U CN201720358671.4U CN201720358671U CN206742372U CN 206742372 U CN206742372 U CN 206742372U CN 201720358671 U CN201720358671 U CN 201720358671U CN 206742372 U CN206742372 U CN 206742372U
- Authority
- CN
- China
- Prior art keywords
- boss
- secondary cell
- insulating barrier
- battery core
- pole piece
- 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.)
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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)
- Secondary Cells (AREA)
Abstract
The utility model provides a kind of secondary cell, and it includes：Housing, there is opening；Battery core, it is contained in housing, and there is main body and opposite polarity first lug and the second lug that are arranged in main body；Top cover, include the coping plate of the opening of covering housing；And insulating barrier, it is fixed on the downside of coping plate.Wherein, the main body of battery core includes anode pole piece, cathode pole piece and the barrier film being arranged between anode pole piece and cathode pole piece, and anode pole piece, cathode pole piece and barrier film are wound into flat, and the rolled upper surface formed is located at the same side with coping plate；Insulating barrier is provided with the boss that extends downwardly, and boss is against the upper surface of the main body of battery core.According in secondary cell of the present utility model, it is resisted against due to the boss of insulating barrier on the upper surface of the main body of battery core, so when secondary cell shakes or fallen, boss can limit the play up and down of battery core, battery core internal short-circuit is avoided, improves the security performance of secondary cell.
Description
Technical field
It the utility model is related to field of batteries, more particularly to a kind of secondary cell.
Background technology
Existing secondary cell generally comprises battery core, housing, top cover and insulating barrier, wherein, battery core is housed in housing,
Top cover is assembled together with housing, and the lug of battery core electrically connects with the pole on top cover.Insulating barrier be fixed on the downside of top cover with
Battery core and top cover are separated, so as to avoid lug from being electrically connected with the other parts of top cover.However, in order to ensure lug and pole
Electrical connection, generally leaves gap between battery core and insulating barrier, when secondary cell shakes or fallen, battery core is easily altered up and down
It is dynamic, cause battery core that internal short-circuit occurs.
Utility model content
In view of problem present in background technology, the purpose of this utility model is to provide a kind of secondary cell, and it can be limited
Play above and below battery core processed, avoids battery core internal short-circuit, improves the security performance of secondary cell.
To achieve these goals, the utility model provides a kind of secondary cell, and it includes：Housing, there is opening；Electricity
Core, it is contained in housing, and there is main body and opposite polarity first lug and the second lug that are arranged in main body；Top
Lid, include the coping plate of the opening of covering housing；And insulating barrier, it is fixed on the downside of coping plate.Wherein, the main body of battery core
Including anode pole piece, cathode pole piece and the barrier film being arranged between anode pole piece and cathode pole piece, anode pole piece, negative pole pole
Piece and barrier film are wound into flat, and the rolled upper surface formed is located at the same side with coping plate；Insulating barrier is provided with
The boss extended downwardly, and boss is against the upper surface of the main body of battery core.
The beneficial effects of the utility model are as follows：
According in secondary cell of the present utility model, because the boss of insulating barrier is resisted against the upper end of the main body of battery core
On face, so when secondary cell shakes or fallen, boss can limit the play up and down of battery core, avoid battery core internal short-circuit, carry
The security performance of high secondary cell.
Brief description of the drawings
Fig. 1 is the exploded view according to secondary cell of the present utility model；
Fig. 2 is the schematic diagram according to secondary cell of the present utility model, and wherein housing omits；
Fig. 3 is the sectional view according to secondary cell of the present utility model；
Fig. 4 is according to the top cover of secondary cell of the present utility model and the installation diagram of insulating barrier；
Fig. 5 is Fig. 4 exploded view；
Fig. 6 is the schematic diagram according to the insulating barrier of secondary cell of the present utility model.
Wherein, description of reference numerals is as follows：
The first boss of 1 housing 411
The second boss of 2 battery core 412
The boss of 21 main body 413 the 3rd
The recess of 211 upper surface 42
22 first lug, 421 sub- recess
The pole through hole of 221 first connecting portion 43 first
Through hole on 222 first kinks 431
The lower through-hole of 23 second lug 432
The connection sheet of 3 top cover 5 first
The screening glass of 31 coping plate 6
311 explosion-proof valve P sub-dividing plates
32 first pole H through holes
321 connecting portion L length directions
322 body W widths
4 insulating barrier U above-below directions
41 boss
Embodiment
Describe secondary cell of the present utility model in detail with reference to the accompanying drawings.
Referring to figs. 1 to Fig. 6, included according to secondary cell of the present utility model：Housing 1, there is opening；Battery core 2, is contained in
In housing 1, and with main body 21 and the lug 23 of opposite polarity first lug 22 and second being arranged in main body 21；Top cover
3, include the coping plate 31 of the opening of covering housing 1；And insulating barrier 4, it is fixed on the downside of coping plate 31.Wherein, battery core 2
Main body 21 include anode pole piece, cathode pole piece and the barrier film being arranged between anode pole piece and cathode pole piece, positive pole pole
Piece, cathode pole piece and barrier film are wound into flat, and the rolled upper surface 211 formed and coping plate 31 are positioned at same
Side；Insulating barrier 4 is provided with the boss 41 that extends downwardly, and boss 41 is against the upper surface 211 of the main body 21 of battery core 2.
According in secondary cell of the present utility model, because the boss 41 of insulating barrier 4 is resisted against the main body 21 of battery core 2
Upper surface 211 on, so when secondary cell shakes or when falling, boss 41 can limit the play up and down of battery core 2, avoid electricity
The internal short-circuit of core 2, improve the security performance of secondary cell.
According in secondary cell of the present utility model, insulating barrier 4 can be made up of plastic cement.
According in secondary cell of the present utility model, reference picture 1, Fig. 2, Fig. 4 to Fig. 6, boss 41 include first boss
411 and second boss 412, first boss 411 and second boss 412 are respectively positioned at the L along its length of insulating barrier 4 both ends.
First boss 411 and second boss 412 are respectively from length direction L both ends against battery core 2 so that battery core 2 is shaken in secondary cell
By uniform active force when moving or falling.
According in secondary cell of the present utility model, reference picture 1, Fig. 2, Fig. 4 to Fig. 6, it is convex that boss 41 also includes the 3rd
Platform 413, the 3rd boss 413 is between first boss 411 and second boss 412.Preferably, first boss 411, second boss
412 and the 3rd boss 413 with upper surface 211 against lower surface be plane.Further, first boss 411, second
The boss 413 of boss 412 and the 3rd with upper surface 211 against lower surface be located at approximately the same plane.
According in secondary cell of the present utility model, reference picture 1, battery core 2 can be the multiple, (first boss of boss 41
411st, the boss 413 of second boss 412 and the 3rd) while be resisted against on the upper surface 211 of multiple battery cores 2.
According in secondary cell of the present utility model, gross contact area and upper end between upper surface 211 and boss 41
The ratio between the gross area in face 211 is 0.25~0.55.The main body 21 of battery core 2 is wound by anode pole piece, cathode pole piece and barrier film
Form, and barrier film is completely separated by anode pole piece and cathode pole piece in order to ensure, so the edge of barrier film is needed beyond just
Pole pole piece and cathode pole piece.If the gross contact area between upper surface 211 and boss 41 is too small, then is shaken in secondary cell
Or when falling, upper surface 211 then can be caused barrier film can not will just by excessive pressure, the easy backfin barrier film of boss 41
Pole pole piece and cathode pole piece are completely separated, cause the internal short-circuit of battery core 2, it is therefore desirable to ensure between upper surface 211 and boss 41
Gross contact area is sufficiently large, so as to reduce the pressure that boss 41 is acted on upper surface 211.
In the embodiment according to secondary cell of the present utility model, insulating barrier 4 is an entirety；In another implementation
In example, reference picture 4 to Fig. 6, insulating barrier 4 is two sub-dividing plate P of separation.
According in secondary cell of the present utility model, reference picture 3, top cover 3 also includes being arranged on the on coping plate 31
One pole 32, the first pole 32 includes connecting portion 321 and body 322, and the cross-sectional area of connecting portion 321 is more than body
322 cross-sectional area；Reference picture 5, insulating barrier 4 are provided with the first pole through hole 43, and the first pole through hole 43 is shoulder hole
And including upper through hole 431 and lower through-hole 432, and the size of lower through-hole 432 is more than the size of upper through hole 431；Reference picture 3, body
Portion 322 is set in through hole 431, and at least a portion of connecting portion 321 is contained in lower through-hole 432, and connecting portion 321 is upper
Surface contacts with insulating barrier 4.The body 322 of first pole 32 can extend to outside through upper through hole 431, in order to
Miscellaneous equipment electrically connects；The connecting portion 321 being contained in lower through-hole 432 can electrically connect with the first lug 22.
According in secondary cell of the present utility model, reference picture 3, the secondary cell also includes：First connection sheet 5,
U is located between insulating barrier 4 and the main body 21 of battery core 2 along the vertical direction, and is connected on the He of connecting portion 321 of the first pole 32
Between first lug 22.First lug 22 has：First connecting portion 221, fix and electrically connect with the first connection sheet 5；And first
Kink 222, connects the main body 21 and first connecting portion 221 of battery core 2, and is folded into the U along the vertical direction of first connecting portion 221
Downside.This bending structure of first lug 22 both can guarantee that (the first lug 22 will foot with the bonding strength of first connecting portion 221
It is enough long, to ensure the connection area with first connecting portion 221), it also can effectively save space.
According in secondary cell of the present utility model, reference picture 3, the secondary cell also includes：Screening glass 6, it is fixed
In the first connecting portion 221 of the first lug 22.The first connecting portion 221 of usual first lug 22 passes through ultrasonic bonding and the
A connecting piece 5 is fixedly connected, and by setting screening glass 6, screening glass 6, the connection sheet 5 of first connecting portion 221 and first are welded
It is connected together, the bonding strength of the connection sheet 5 of first connecting portion 221 and first can be improved.
According in secondary cell of the present utility model, reference picture 1, Fig. 2 and Fig. 5, coping plate 31 are provided with explosion-proof valve
311；Accordingly, insulating barrier 4 is located at immediately below explosion-proof valve 311, the position relative with explosion-proof valve 311 of insulating barrier 4 formed with
Sagging recess 42.When secondary cell shakes or fallen, boss 41 can be by the active force of battery core 2, and insulating barrier 4 is by this
It can be deformed during active force, easily extrude explosion-proof valve 311, cause explosion-proof valve 311 to fail, therefore, by insulating barrier 4
Recess 42 is set, avoids insulating barrier 4 from extruding explosion-proof valve 311, prevents explosion-proof valve 311 from failing, improve the security of secondary cell
Energy.
According in secondary cell of the present utility model, reference picture 5 and Fig. 6, the upper and lower surface of recess 42 is
Curved surface, and recess 42 is provided with through hole H.When 2 internal short-circuit of battery core, caused gas can act on explosion-proof valve 311 by through hole H
Go up and break through explosion-proof valve 311, avoid secondary cell from exploding.
According in secondary cell of the present utility model, reference picture 4 to Fig. 6, the 3rd boss 413 is arranged under recess 42
Side.
According in secondary cell of the present utility model, reference picture 4 to Fig. 6, insulating barrier 4 is two sub-dividing plates of separation
P, recess 42 are divided to for two sub- recesses 421 and respectively corresponding on sub-dividing plate P；Accordingly, the 3rd boss 413 is arranged on it
In a sub- recess 421 lower section.Further, the depth that the sub- recess 421 provided with the 3rd boss 413 sink is more than another
The sagging depth of sub- recess 421.When secondary cell shakes or fallen, the 3rd boss 413 is by the active force of battery core 2, insulation
Deformation of the dividing plate 4 at the 3rd boss 413 is larger, thus, it is ensured that the depth that the sub- recess 421 provided with the 3rd boss 413 is sagging
Degree, the sub- recess 421 is avoided to extrude explosion-proof valve 311, and the deformation of another sub- recess 421 is smaller, so another height
The sagging depth of recess 421 can be less than the sagging depth of the sub- recess 421 provided with the 3rd boss 413.
Claims (10)
1. a kind of secondary cell, including：
Housing (1), there is opening；
Battery core (2), be contained in housing (1), and with main body (21) and be arranged in main body (21) opposite polarity the
One lug (22) and the second lug (23)；
Top cover (3), include the coping plate (31) of the opening of covering housing (1)；And
Insulating barrier (4), it is fixed on the downside of coping plate (31)；
Characterized in that,
The main body (21) of battery core (2) includes anode pole piece, cathode pole piece and is arranged between anode pole piece and cathode pole piece
Barrier film, anode pole piece, cathode pole piece and barrier film are wound into flat, and the rolled upper surface (211) formed and top
Cover plate (31) is located at the same side；
Insulating barrier (4) is provided with the boss (41) that extends downwardly, and boss (41) is against the upper surface of the main body (21) of battery core (2)
(211)。
2. secondary cell according to claim 1, it is characterised in that boss (41) includes first boss (411) and second
Boss (412), first boss (411) and second boss (412) are respectively positioned at the both ends of insulating barrier (4) (L) along its length.
3. secondary cell according to claim 2, it is characterised in that boss (41) also includes the 3rd boss (413), and the 3rd
Boss (413) is located between first boss (411) and second boss (412).
4. secondary cell according to claim 3, it is characterised in that the contact between upper surface (211) and boss (41)
The ratio between the gross area and the gross area of upper surface (211) are 0.25~0.55.
5. secondary cell according to claim 1, it is characterised in that
Top cover (3) also includes the first pole (32) being arranged on coping plate (31), and the first pole (32) includes connecting portion (321)
With body (322), and the cross-sectional area of connecting portion (321) be more than body (322) cross-sectional area；
Insulating barrier (4) is provided with the first pole with through hole (43), and the first pole through hole (43) is shoulder hole and including upper through hole
(431) and lower through-hole (432), and the size of lower through-hole (432) is more than the size of upper through hole (431)；
Body (322) is set in through hole (431), and at least a portion of connecting portion (321) is contained in lower through-hole (432),
And the upper surface of connecting portion (321) contacts with insulating barrier (4).
6. secondary cell according to claim 5, it is characterised in that
The secondary cell also includes：First connection sheet (5), along the vertical direction (U) be located at insulating barrier (4) and battery core (2)
Between main body (21), and it is connected between the connecting portion (321) of the first pole (32) and the first lug (22)；
First lug (22) has：
First connecting portion (221), electrically connected with the first connection sheet (5) fixation；And
First kink (222), the main body (21) and first connecting portion (221) of connection battery core (2), and it is folded into first connecting portion
(221) downside of (U) along the vertical direction.
7. secondary cell according to claim 3, it is characterised in that
Coping plate (31) is provided with explosion-proof valve (311)；
Insulating barrier (4) is located at immediately below explosion-proof valve (311), insulating barrier (4) and the relative position of explosion-proof valve (311) formed with
Sagging recess (42).
8. secondary cell according to claim 7, it is characterised in that the upper and lower surface of recess (42) is song
Face, and recess (42) is provided with through hole (H).
9. secondary cell according to claim 7, it is characterised in that the 3rd boss (413) is arranged under recess (42)
Side.
10. secondary cell according to claim 7, it is characterised in that
Insulating barrier (4) for separation two sub-dividing plates (P), recess (42) be divided into two sub- recesses (421) and respectively positioned at pair
In the sub-dividing plate (P) answered；
3rd boss (413) is disposed therein the lower section of a sub- recess (421).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720358671.4U CN206742372U (en) | 2017-04-07 | 2017-04-07 | Secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720358671.4U CN206742372U (en) | 2017-04-07 | 2017-04-07 | Secondary cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206742372U true CN206742372U (en) | 2017-12-12 |
Family
ID=60559753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720358671.4U Active CN206742372U (en) | 2017-04-07 | 2017-04-07 | Secondary cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206742372U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108428852A (en) * | 2018-01-12 | 2018-08-21 | 宁德时代新能源科技股份有限公司 | Secondary battery and automobile |
| CN108448163A (en) * | 2018-04-16 | 2018-08-24 | 中航锂电（洛阳）有限公司 | A kind of core of lithium ion cell and the battery using the battery |
| CN108511639A (en) * | 2018-03-08 | 2018-09-07 | 四川西丹孚能源科技有限公司 | Directly draw the power battery head cover of formula downhand welding structure based on lug |
| CN111106304A (en) * | 2018-10-30 | 2020-05-05 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| WO2020155223A1 (en) * | 2019-01-30 | 2020-08-06 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN115663363A (en) * | 2022-11-11 | 2023-01-31 | 厦门海辰储能科技股份有限公司 | Battery end cover assembly, energy storage device and electric equipment |
| CN116365125A (en) * | 2023-05-31 | 2023-06-30 | 深圳海辰储能控制技术有限公司 | End cover assembly, energy storage device and electric equipment |
| CN116365124A (en) * | 2023-05-31 | 2023-06-30 | 深圳海辰储能控制技术有限公司 | End cover assembly, energy storage device and electric equipment |
| WO2023185218A1 (en) * | 2022-03-26 | 2023-10-05 | 珠海冠宇电池股份有限公司 | Battery |
-
2017
- 2017-04-07 CN CN201720358671.4U patent/CN206742372U/en active Active
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108428852A (en) * | 2018-01-12 | 2018-08-21 | 宁德时代新能源科技股份有限公司 | Secondary battery and automobile |
| CN108428852B (en) * | 2018-01-12 | 2024-02-09 | 宁德时代新能源科技股份有限公司 | Secondary battery and automobile |
| CN108511639A (en) * | 2018-03-08 | 2018-09-07 | 四川西丹孚能源科技有限公司 | Directly draw the power battery head cover of formula downhand welding structure based on lug |
| CN108448163A (en) * | 2018-04-16 | 2018-08-24 | 中航锂电（洛阳）有限公司 | A kind of core of lithium ion cell and the battery using the battery |
| CN111106304A (en) * | 2018-10-30 | 2020-05-05 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN111106304B (en) * | 2018-10-30 | 2021-02-26 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN111106304B9 (en) * | 2018-10-30 | 2021-06-11 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| WO2020155223A1 (en) * | 2019-01-30 | 2020-08-06 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| US11695190B2 (en) | 2019-01-30 | 2023-07-04 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| WO2023185218A1 (en) * | 2022-03-26 | 2023-10-05 | 珠海冠宇电池股份有限公司 | Battery |
| CN115663363A (en) * | 2022-11-11 | 2023-01-31 | 厦门海辰储能科技股份有限公司 | Battery end cover assembly, energy storage device and electric equipment |
| CN115663363B (en) * | 2022-11-11 | 2023-12-22 | 厦门海辰储能科技股份有限公司 | Battery end cover assembly, energy storage device and electric equipment |
| CN116365125A (en) * | 2023-05-31 | 2023-06-30 | 深圳海辰储能控制技术有限公司 | End cover assembly, energy storage device and electric equipment |
| CN116365124B (en) * | 2023-05-31 | 2023-08-11 | 深圳海辰储能控制技术有限公司 | End cover assembly, energy storage device and electric equipment |
| CN116365125B (en) * | 2023-05-31 | 2023-08-08 | 深圳海辰储能控制技术有限公司 | End cover assembly, energy storage device and electric equipment |
| CN116365124A (en) * | 2023-05-31 | 2023-06-30 | 深圳海辰储能控制技术有限公司 | End cover assembly, energy storage device and electric equipment |
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