CN206742364U - Secondary cell - Google Patents
Secondary cell Download PDFInfo
- Publication number
- CN206742364U CN206742364U CN201720358583.4U CN201720358583U CN206742364U CN 206742364 U CN206742364 U CN 206742364U CN 201720358583 U CN201720358583 U CN 201720358583U CN 206742364 U CN206742364 U CN 206742364U
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- CN
- China
- Prior art keywords
- secondary cell
- main part
- curled portion
- revers turn
- lug
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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
-
- 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 provides a kind of secondary cell, and it includes：Top cover, there is the first pole；Battery core, there is main body and opposite polarity first lug and the second lug that are arranged in main body；First connection sheet, it is connected between the first lug and the first pole.First lug has：First connecting portion, it is arranged on below the first connection sheet；And first kink, connect the main body and first connecting portion of battery core.Secondary cell also includes：First screening glass, it is fixed on below first connecting portion；First screening glass includes main part and the first curled portion, and the first curled portion connects the outer end in the width direction of main part and crimped relative to main part；Wherein, the first kink is bent downwards around the arc outer wall of the first curled portion.During the production and use of secondary cell, the first kink will not be punctured by the arc outer wall of the first curled portion, avoid battery core short circuit or open circuit, improve 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 and top cover, wherein, battery core is housed in housing, top cover and shell
Body is assembled together, and the lug of battery core electrically connects with the pole on top cover.But in order to ensure that the connection of lug and pole is strong
Degree, will generally ensure the length of lug, and screening glass is added on the downside of lug, and in order to reduce the space of lug occupancy, need
Lug is bent to two layers up and down around the end of screening glass, can so cause the ends contact of lug and screening glass, due to pole
Ear is very thin and end of screening glass can produce burr in punching course, so during the production and use of secondary cell
(such as when falling), the burr of the end of screening glass easily puncture lug, cause battery core short circuit or open circuit, reduce secondary cell
Security performance.
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 keep away
The end for exempting from screening glass punctures lug, so as to improve the security performance of secondary cell.
To achieve these goals, the utility model provides a kind of secondary cell, and it includes：Top cover, there is the first pole
Post；Battery core, there is main body and opposite polarity first lug and the second lug that are arranged in main body；First connection sheet, string
It is associated between the first lug and the first pole.First lug has：First connecting portion, it is arranged on below the first connection sheet；And
First kink, connect the main body and first connecting portion of battery core.The secondary cell also includes：First screening glass, it is fixed on
Below one connecting portion；First screening glass includes main part and the first curled portion, the first curled portion connection main part along width side
To outer end and crimped relative to main part；Wherein, the first kink is bent downwards around the arc outer wall of the first curled portion.
The beneficial effects of the utility model are as follows：
According in secondary cell of the present utility model, because the first screening glass is provided with the first curled portion, and first
Kink is bent downwards around the arc outer wall of the first curled portion, therefore the first kink will not touch the end of the first screening glass
The burr in portion, so during the production and use of secondary cell, the first kink will not be by the arc of the first curled portion outside
Wall punctures, and avoids battery core short circuit or open circuit, improves the security performance of secondary cell.
Brief description of the drawings
Fig. 1 is the schematic diagram according to secondary cell of the present utility model；
Fig. 2 is the enlarged drawing of Fig. 1 dotted box portions；
Fig. 3 is another schematic diagram according to secondary cell of the present utility model；
Fig. 4 is the schematic diagram according to the top cover and insulation frame of secondary cell of the present utility model；
Fig. 5 is the schematic diagram according to the battery core of secondary cell of the present utility model, the first connection sheet and the first screening glass；
Fig. 6 is the schematic diagram according to an embodiment of the first screening glass of secondary cell of the present utility model；
Fig. 7 is the schematic diagram according to another embodiment of the first screening glass of secondary cell of the present utility model；
Fig. 8 is the schematic diagram according to the another embodiment of the first screening glass of secondary cell of the present utility model.
Wherein, description of reference numerals is as follows：
The curled portion of 1 top cover 43 first
The curled portion of 11 first pole 44 second
The revers turn part of 12 second pole 45 second
The housing of 2 battery core 5
21 main bodys 6 insulation frame
The lateral margin of 211 upper surface 61 first
The lateral margin of 22 first lug 62 second
The body of 221 first connecting portion 63
222 first kink R fillets
23 second lug G insulating cements
3 first connection sheet W widths
4 first screening glass U above-below directions
41 main part L length directions
42 first revers turn parts
Embodiment
Describe secondary cell of the present utility model in detail with reference to the accompanying drawings.
Referring to figs. 1 to Fig. 8, included according to secondary cell of the present utility model：Top cover 1, there is the first pole 11；Battery core 2,
With main body 21 and the lug 23 of opposite polarity first lug 22 and second being arranged in main body 21；First connection sheet 3, string
It is associated between the first lug 22 and the first pole 11.First lug 22 has：First connecting portion 221, it is arranged on the first connection sheet 3
Lower section；And first kink 222, connect the main body 21 and first connecting portion 221 of battery core 2.The secondary cell also includes：The
One screening glass 4, it is fixed on the lower section of first connecting portion 221；First screening glass 4 includes the curled portion 43 of main part 41 and first, and first
Curled portion 43 connects the W in the width direction of main part 41 outer end and crimped relative to main part 41；Wherein, the first kink
222 arc outer walls for surrounding the first curled portion 43 are bent downwards.
According in secondary cell of the present utility model, because the first screening glass 4 is provided with the first curled portion 43, and
One kink 222 is bent downwards around the arc outer wall of the first curled portion 43, therefore the first kink 222 will not touch first
The burr of the end of screening glass, so during the production and use of secondary cell, the first kink 222 will not be by the first volume
The arc outer wall of pars convoluta 43 punctures, and avoids the short circuit of battery core 2 or open circuit, improves the security performance of secondary cell.
According in secondary cell of the present utility model, reference picture 3, top cover 1 also has what is electrically connected with the second lug 23
Second pole 12.
According in secondary cell of the present utility model, reference picture 2, Fig. 6 and Fig. 7, the first screening glass 4 also include relative to
First revers turn part 42 of the inflection of main part 41, and the first curled portion 43 connection revers turn part 42 of main part 41 and first, the first inflection
Portion 42, the first curled portion 43, main part 41 collectively constitute U-shaped structure.In one embodiment, reference picture 7, the first revers turn part 42 with
The W in the width direction of main part 41 width is identical." U-shaped structure " be describe the first revers turn part 42, the first curled portion 43 and
The general shape that main part 41 forms, the first revers turn part 42 can be flushed with main part 41 (reference picture 7, the first revers turn part 42 with
The width of main part 41 is identical), can also being shorter than main part 41, (reference picture 6, the width of the first revers turn part 42 are less than main part
41)。
According in secondary cell of the present utility model, reference picture 2 and Fig. 6, the first screening glass 4 also include：Second curling
Portion 44, connect the W in the width direction of main part 41 the inner and crimped relative to main part 41；And second revers turn part 45,
Relative to the inflection of main part 41, and the second curled portion 44 connects the revers turn part 45 of main part 41 and second, the second revers turn part 45, second
Curled portion 44, main part 41 collectively constitute U-shaped structure, and the second revers turn part 45 and the first revers turn part 42 are located at main part 41 vertically
Direction U the same side." U-shaped structure " is to describe that the second revers turn part 45, the second curled portion 44 and main part 41 form big
It shape, the second revers turn part 45, can be flushed with main part 41, main part 41 (reference picture 6, the second revers turn part can also be shorter than
45 width is less than main part 41).
According in secondary cell of the present utility model, reference picture 6, the first revers turn part 42 and the second revers turn part 45 are on upper
The plane that lower direction U and length direction L is formed is symmetrical into plane；First curled portion 43 and the second curled portion 44 are on above-below direction
The plane that U and length direction L is formed is symmetrical into plane.This symmetrical structure of first screening glass 4 can play a part of fool proof.
According in secondary cell of the present utility model, reference picture 3, secondary cell also includes：Housing 5, house battery core 2 simultaneously
It is assembled together with top cover 1；And insulation frame 6, it is housed in housing 5 and is arranged on the downside of top cover 1, insulation frame 6 includes body
Portion 63.Wherein, reference picture 5, the main body 21 of battery core 2 include anode pole piece, cathode pole piece and are arranged on anode pole piece and negative pole
Barrier film between pole piece, anode pole piece, cathode pole piece and barrier film are wound into flat, and the rolled upper surface formed
211 is relative with insulation frame 6；The L along its length of body 63 both ends are equipped with the first lateral margin 61 extended downwardly, each first side
Edge 61 is resisted against on the upper surface 211 of the main body 21 of battery core 2.Because the first lateral margin 61 of the frame 6 that insulate is resisted against the main body of battery core 2
On 21 upper surface 211, so when secondary cell shakes or fallen, the first lateral margin 61 can limit the play up and down of battery core 2,
The internal short-circuit of battery core 2 is avoided, improves the security performance of secondary cell.
According in secondary cell of the present utility model, reference picture 1, battery core 2 can be it is multiple, the first lateral margin 61 simultaneously against
On the upper surface 211 of multiple battery cores 2.
According in secondary cell of the present utility model, total contact area between upper surface 211 and each first lateral margin 61
The ratio between gross area of (gross area that i.e. upper surface 211 contacts with two the first lateral margins 61) and upper surface 211 is 0.1~0.4.Electricity
The main body 21 of core 2 is formed by anode pole piece, cathode pole piece and barrier film winding, and barrier film in order to ensure anode pole piece and
Cathode pole piece is completely separated, so the edge of barrier film needs to exceed anode pole piece and cathode pole piece.If upper surface 211 and
Gross contact area between one lateral margin 61 is too small, then when secondary cell shakes or fallen, upper surface 211 then can be by very big
Pressure, 61 easy backfin barrier film of the first lateral margin, cause barrier film that anode pole piece and cathode pole piece is completely separated, make
Into the internal short-circuit of battery core 2, it is therefore desirable to ensure that the gross contact area between upper surface 211 and two the first lateral margins 61 is sufficiently large, from
And reduce the pressure that the first lateral margin 61 is acted on upper surface 211.
According in secondary cell of the present utility model, referring to Figures 1 and 2, body 63 is provided with second extended downwardly
Lateral margin 62, the second lateral margin 62 is located at the first curled portion 43 W in the width direction outside, and the second lateral margin 62 is located at the first lug
Between 22 and housing 5, at least a portion of the first kink 222 crimps on width W positioned at the second lateral margin 62 and first
Between portion 43.When the quantity of battery core 2 inside secondary cell is more, multiple first lugs 22 need to gather together, Ran Houzai
It is fixedly connected with the first connection sheet 3, so, the second lateral margin 62 and the first curled portion 43 can be to the multiple first lugs 22
First kink 222 plays a part of gathering, avoids multiple plays of first kink 222.
According in secondary cell of the present utility model, referring to Figures 1 and 2, the connection of the lateral margin 62 of body 63 and second
Place is provided with fillet R, and fillet R is positioned at the inwall of insulation frame 6.In order to ensure area of passage, the first lug 22 generally has multilayer,
Because arc outer wall of first kink 222 around the first curled portion 43 is bent downwards, therefore positioned at the outside of arc outer wall
First kink 222 can also form arcuate structure, now if the inwall of the junction of the lateral margin 62 of body 63 and second is straight
Corner structure, then outermost first kink 222 positioned at arc outer wall be easily trapped into right-angle structure so as to be pressed down.Pass through
Fillet R is set, it is similar with the shape of the first kink 222 positioned at the outside of arc outer wall, therefore arc outer wall can be pointed to
Outermost first kink 222 carry out spacing, prevent it to be pressed down.
According in secondary cell of the present utility model, referring to Figures 1 and 2, by ultrasonic bonding by the first screening glass
4th, the connection sheet 3 of first connecting portion 221 and first is fixed；The surface mount relative with main body 21 of first screening glass 4 has insulating cement
G.During the production and use of secondary cell, insulating cement G can avoid the first screening glass 4 from being contacted with main body 21, avoid short
Road.
Claims (10)
1. a kind of secondary cell, including：
Top cover (1), there is the first pole (11)；
Battery core (2), there is main body (21) and opposite polarity first lug (22) and the second pole that are arranged in main body (21)
Ear (23)；And
First connection sheet (3), it is connected between the first lug (22) and the first pole (11)；
Characterized in that,
First lug (22) has：
First connecting portion (221), it is arranged on below the first connection sheet (3)；And
First kink (222), the main body (21) and first connecting portion (221) of connection battery core (2)；
The secondary cell also includes：First screening glass (4), it is fixed on below first connecting portion (221)；
First screening glass (4) includes main part (41) and the first curled portion (43), the first curled portion (43) connection main part (41)
The outer end of (W) in the width direction and relative to main part (41) crimp；
Wherein, the first kink (222) is bent downwards around the arc outer wall of the first curled portion (43).
2. secondary cell according to claim 1, it is characterised in that
First screening glass (4) also includes the first revers turn part (42) relative to main part (41) inflection, and the first curled portion (43)
Connect main part (41) and the first revers turn part (42), the first revers turn part (42), the first curled portion (43), common group of main part (41)
Into U-shaped structure.
3. secondary cell according to claim 2, it is characterised in that the first revers turn part (42) and main part (41) are along width
The width in direction (W) is identical.
4. secondary cell according to claim 2, it is characterised in that the first screening glass (4) also includes：
Second curled portion (44), connect the inner of (W) in the width direction of main part (41) and rolled up relative to main part (41)
It is bent；And
Second revers turn part (45), relative to main part (41) inflection, and the second curled portion (44) connects main part (41) and second
Revers turn part (45), the second revers turn part (45), the second curled portion (44), main part (41) collectively constitute U-shaped structure, the second revers turn part
(45) it is located at the same side of main part (41) (U) along the vertical direction with the first revers turn part (42).
5. secondary cell according to claim 4, it is characterised in that
The plane Cheng Ping that first revers turn part (42) and the second revers turn part (45) form on above-below direction (U) and length direction (L)
Face is symmetrical；
The plane Cheng Ping that first curled portion (43) and the second curled portion (44) form on above-below direction (U) and length direction (L)
Face is symmetrical.
6. secondary cell according to claim 1, it is characterised in that secondary cell also includes：
Housing (5), house battery core (2) and be assembled together with top cover (1)；And
Insulate frame (6), is housed in housing (5) and is arranged on the downside of top cover (1), insulation frame (6) includes body (63)；
Wherein, the main body (21) of battery core (2) include anode pole piece, cathode pole piece and be arranged on anode pole piece and cathode pole piece it
Between barrier film, anode pole piece, cathode pole piece and barrier film are wound into flat, and the rolled upper surface (211) formed
It is relative with insulation frame (6)；
The both ends of body (63) (L) along its length are equipped with the first lateral margin (61) extended downwardly, each first lateral margin (61)
It is resisted against on the upper surface (211) of the main body (21) of battery core (2).
7. secondary cell according to claim 6, it is characterised in that between upper surface (211) and each first lateral margin (61)
The ratio between the gross area of total contact area and upper surface (211) be 0.1~0.4.
8. secondary cell according to claim 6, it is characterised in that body (63) is provided with the second lateral margin extended downwardly
(62), the second lateral margin (62) are located at the outside of the first curled portion (43) (W) in the width direction, and the second lateral margin (62) positioned at the
Between one lug (22) and housing (5), at least a portion of the first kink (222) is located at the second side on width (W)
Between edge (62) and the first curled portion (43).
9. secondary cell according to claim 8, it is characterised in that body (63) and the junction of the second lateral margin (62)
Provided with fillet (R), and fillet (R) is positioned at the inwall of insulation frame (6).
10. secondary cell according to claim 1, it is characterised in that
It is by ultrasonic bonding that the first screening glass (4), first connecting portion (221) and the first connection sheet (3) is fixed；
The surface mount relative with main body (21) of first screening glass (4) has insulating cement (G).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720358583.4U CN206742364U (en) | 2017-04-07 | 2017-04-07 | Secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720358583.4U CN206742364U (en) | 2017-04-07 | 2017-04-07 | Secondary cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206742364U true CN206742364U (en) | 2017-12-12 |
Family
ID=60558598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720358583.4U Active CN206742364U (en) | 2017-04-07 | 2017-04-07 | Secondary cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206742364U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108428847A (en) * | 2017-04-07 | 2018-08-21 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN113314810A (en) * | 2021-07-29 | 2021-08-27 | 东莞塔菲尔新能源科技有限公司 | Secondary battery, battery module and electric device |
| CN115441131A (en) * | 2022-11-04 | 2022-12-06 | 江苏正力新能电池技术有限公司 | Membrane, battery core and battery |
-
2017
- 2017-04-07 CN CN201720358583.4U patent/CN206742364U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108428847A (en) * | 2017-04-07 | 2018-08-21 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| EP3386004A1 (en) * | 2017-04-07 | 2018-10-10 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| US10573872B2 (en) | 2017-04-07 | 2020-02-25 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| US11335979B2 (en) | 2017-04-07 | 2022-05-17 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| CN108428847B (en) * | 2017-04-07 | 2023-08-29 | 宁德时代新能源科技股份有限公司 | secondary battery |
| CN113314810A (en) * | 2021-07-29 | 2021-08-27 | 东莞塔菲尔新能源科技有限公司 | Secondary battery, battery module and electric device |
| WO2023005005A1 (en) * | 2021-07-29 | 2023-02-02 | 江苏正力新能电池技术有限公司 | Secondary battery, battery module, and electric device |
| CN115441131A (en) * | 2022-11-04 | 2022-12-06 | 江苏正力新能电池技术有限公司 | Membrane, battery core and battery |
| CN115441131B (en) * | 2022-11-04 | 2023-03-07 | 江苏正力新能电池技术有限公司 | Membrane, battery cell and battery |
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| GR01 | Patent grant |