CN201266633Y - Cylinder battery - Google Patents

Cylinder battery Download PDF

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Publication number
CN201266633Y
CN201266633Y CNU2008201466314U CN200820146631U CN201266633Y CN 201266633 Y CN201266633 Y CN 201266633Y CN U2008201466314 U CNU2008201466314 U CN U2008201466314U CN 200820146631 U CN200820146631 U CN 200820146631U CN 201266633 Y CN201266633 Y CN 201266633Y
Authority
CN
China
Prior art keywords
lug
pad
conductive layer
ejector
cover plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CNU2008201466314U
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Chinese (zh)
Inventor
刘道坦
刘照宽
黄荣光
郭春泰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhengzhou Beek New Energy Developments Ltd
Original Assignee
Shenzhen Bak Battery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Bak Battery Co Ltd filed Critical Shenzhen Bak Battery Co Ltd
Priority to CNU2008201466314U priority Critical patent/CN201266633Y/en
Application granted granted Critical
Publication of CN201266633Y publication Critical patent/CN201266633Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model discloses a cylinder battery which comprises a roll core and a cover plate. A pole lug extends out of the end of the roll core, the battery also comprises a disc-shaped pole lug extracting device which is placed at the end of the roll core, the pole lug extracting device has an insulating layer which contacts with the end of the roll core and a conductive layer which is far away from the end of the roll core, and the pole lug is electrically connected with the conductive layer which is electrically connected with a cover plate. The cylinder battery also comprises a connecting piece and a second disc-shaped gasket which is overlaid between the conductive layer of the pole lug extracting device and the cover plate, and the connecting piece presses the pole lug between the second gasket and the conductive layer of the pole lug extracting device. The pole lug is welded on the pole lug extracting device, and mechanical contact and hold-down is carried out by the second gasket, thus ensuring reliable connection between the pole lug and a pole column of the electric core, reducing the internal resistance of the battery and ensuring firmness of the roll core, and the assembly process is simple, which is suitable for flow production. The battery is suitable for a hybrid electric vehicle and a pure electric vehicle with a plurality of pole lugs and large volume and can also be used as a large-sized energy storage battery.

Description

A kind of cylindrical battery
Technical field
The utility model relates to battery and makes the field, specifically relates to a kind of cylindrical battery.
Background technology
Lithium ion cylinder battery is by negative plate, positive plate, electrolyte and prevent that between positive/negative plate the barrier film of short circuit from forming.Positive plate and negative plate are done makes thin plate or paper tinsel shape, then battery lead plate and intervenient barrier film is stacked in order or helical form is twined and form electric core, again electric core is packed in iron, aluminum metal case or the lamination flexible packaging film battery case of stainless steel, nickel plating, inject electrolyte, battery is made in sealing.Wherein, electric core and extraneous conducting are that lug by being connected with pole plate was realized with being connected of pole or cover plate.
Present technology, generally lug is welded on the pole of cover plate, when heavy-current discharge, such as using when hybrid-electric car (HEV) or pure electric automobile (EV) are gone up, if locating to be connected bad or connect, lug and pole etc. lost efficacy, to cause heating serious, and cause battery temperature too high, cause battery failure when serious, influence the fail safe and the cycle life of battery, especially when being provided with a plurality of lugs and being connected with pole, the welding position can not accurately be controlled, and is unfavorable for technology, quality control.
Summary of the invention
The technical problems to be solved in the utility model overcomes above defective exactly, proposes a kind of cylindrical battery, improves being connected between a plurality of lugs and pole on the electric core, reduces the internal resistance of cell, reduces the battery caloric value.
Technical problem of the present utility model is achieved through the following technical solutions.
This cylindrical battery comprises cylindrical roll core and cover plate, and the end of described volume core is extended with lug, and described lug comprises anode ear and negative electrode lug.
The characteristics of this cylindrical battery are, also be provided with the discoid lug ejector that is placed on volume core end, described lug ejector has the insulating barrier that contact with volume core end and away from the conductive layer of rolling up the core end, described lug is electrically connected with conductive layer, and described conductive layer is electrically connected with cover plate.
Described anode ear and negative electrode lug are respectively a plurality of.
Described lug ejector is the structure of insulating barrier and the compound one of conductive layer, offers at least one axial porosity on the described lug ejector, and described a plurality of lugs are electrically connected with conductive layer after running through described axial porosity respectively.
Axial porosity on the described lug ejector is fan-shaped hole.
Described lug stretches out the back from the outer rim of lug ejector and is electrically connected with conductive layer.
Described lug ejector comprises the insulation spacer and first pad, described insulation spacer forms described insulating barrier, described first pad forms described conductive layer, offer at least one axial porosity on the described insulation spacer, offer at least one axial porosity on described first pad, described a plurality of lugs are electrically connected with first pad after running through axial porosity on the described insulating trip respectively and the axial porosity on first pad.
Axial porosity on the axial porosity on the described insulating trip and first pad is fan-shaped hole.
Described lug stretches out the back from the outer rim of the insulation spacer and first pad and is electrically connected with first pad.
Also comprise connector, be stacked in the conductive layer of lug ejector and second pad between the cover plate, described connector is pressed on lug between the conductive layer of second pad and lug ejector.
Be provided with axial porosity with the corresponding disk card of lug on described second pad.
The described axial porosity of stating on second pad is fan-shaped hole.
Described connector is a bolt connection piece.
The screw rod of described bolt connection piece is fixedly installed on the conductive layer of lug ejector, and by nut second pad is pressed on the conductive layer of lug ejector.
The conductive layer of described lug ejector is electrically connected with cover plate by described connector.
Described cover plate is provided with pole, and described connector is electrically connected with pole on the cover plate.
Between the conductive layer of described lug and lug ejector for being welded to connect.
Be connected for the lf weldering between the conductive layer of described lug and lug ejector.
Described a plurality of anode ear is positioned at an end of volume core, and described a plurality of negative electrode lugs are positioned at the other end of volume core.
Between the conductive layer of described a plurality of lug and lug ejector for being welded to connect.
Described a plurality of lug respectively with the conductive layer of lug ejector on the relevant position be welded to connect.
The beneficial effect that the utility model is compared with the prior art is:
1. be provided with the lug ejector, lug fixedly is connected electrically on the lug ejector, make the lug tie point reliably firm.
2. on the lug ejector, be provided with the space of fixed-site, guaranteed the lug link position of cylindrical battery, accurately consistent as the welding position, and convenient welding, help enhancing productivity.Especially for cylindrical electrical core, can guarantee that the welding position of each lug is accurate, solve the circular cover of cylindrical battery, circular clamping piece and easily move the problem that causes the welding position change multipole ear.
3. be provided with second pad, and compress, guaranteed that the lug of electric core is connected with the reliable of pole, has increased effective contact area of lug and pole by the second pad Mechanical Contact.
4. lug ejector, second pad closely contact with cover plate, have guaranteed and volume the fixedly securing of core.The lug of battery and pole syndeton are simple, easy to assembly, make economy, are easy to continuous productive process, make things convenient for suitability for industrialized production.
The utility model is highly suitable for the cylindrical battery of multipole ear, large volume, owing to can fix anti-vibration, the impact capacity of electric core, raising battery effectively, and then improve battery safety, and be applicable to the battery of hybrid battery automobile and pure electric automobile, also can be used for large-scale energy-storage battery.
Description of drawings
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 be among Fig. 1 the structure chart of insulation spacer;
Fig. 3 is the structure chart of first pad among Fig. 1;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the structure chart of second pad among Fig. 1;
Fig. 6 is the structure of cover plate figure among Fig. 1;
Fig. 7 is the structure chart of the lug ejector among the embodiment 2;
Fig. 8 is the structure chart of the lug ejector among the embodiment 3.
Embodiment
Embodiment 1
A kind of cylindrical battery as shown in Figure 1, comprises cover plate 1, connector, lug ejector, second pad 3, volume core 7.The lug ejector comprises the insulation spacer 6 and first pad 5, and wherein insulation spacer 6 constitutes insulating barrier, and first pad 5 constitutes conductive layer.Connector comprises nut 2 and the screw rod 502 that is fixed on first pad.Battery pole plates is wound in the volume core 7 of cylindrical shape, and two ends all have a plurality of lugs 4 to stretch out outside the volume core 7, and wherein the lug of an end is an anode ear, and the other end is negative electrode lug entirely, and the two ends lug is identical with the syndeton of cover plate.
Insulation spacer 6 is circular, is placed on the end face of volume core 7, and the structure of insulation spacer 6 offers hole 601 as shown in Figure 2 on it, and hole 601 is fan-shaped for what be interrupted.Above insulation spacer 6, be stacked with first pad 5, the structure of first pad 5 as shown in Figure 3, Figure 4, also offer hole 501 on it, hole 501 is fan-shaped for what be interrupted, the center of first pad 5 also is provided with screw rod 502, screw rod 502 is provided with screw thread, and the centre bore of insulation spacer 6 is passed in its lower end, and the centre bore of second pad 3 is passed in the upper end.Second pad 3 is fastening by the nut 2 and first pad, and the structure of second pad 3 offers space 301 as shown in Figure 5 on it.Cover plate 1 is placed on second pad 3, and its structure is provided with pole 104 as shown in Figure 6, and pole 104 centers offer centre bore 101.Also have liquid injection hole 102 and explosionproof hole 103 on the cover plate 1.First pad 5, second pad 6, lug 4, cover plate 1, pole 104 are made 104 insulation of its cover plate 1 and pole for conductive metal material.
During assembling, lug 4 passes hole 601 on the insulation spacer 6 and the hole 501 on first pad is stretched above insulation spacer 6, afterwards lug 4 is flattened above first pad 5, adopt laser spot welding or sequential welding that lug 4 is welded on first pad 5 again.Placement second pad 3 on first pad 5 then, the centre bore that is about to second pad 3 passes the screw rod 502 of first pad, and upper and lower like this two metallic gaskets are clipped in the middle lug 4, tighten with nut 2, thereby clamp the lug 4 of centre.Cover cover plate 1 at last, the polished rod of screw rod 502 upper ends of the centre bore 101 on the cover plate 1 and first pad 5 is partly combined closely, and the outside welds together the two with the mode of Laser Welding.The upper end form fit of centre bore 101 and screw rod 502 can be circle, the square different shape that waits.
The step that lug 4 is welded on first pad 5 also can be carried out after having placed second pad 3, and the hole 301 that can see through second pad this moment is welded on first pad 5 to lug 4 usefulness laser spot weldings or sequential welding.
Also can select to roll up on the cover plate 1 of core 7 one ends and be not provided with pole 104, anode ear or negative electrode lug are directly electrically connected on the cover plate 1 of conduction.
In another embodiment, anode ear and negative electrode lug all are placed on the same end of volume core 7, and two poles on the cover board are set, and at this moment need the electric connection structure of two poles on positive and negative lug and the cover plate is isolated with insulating element.
Embodiment 2
A kind of cylindrical battery comprises cover plate, connector, lug ejector, second pad, volume core, and its difference from Example 2 is: described lug ejector is the structure of insulating barrier and the compound one of conductive layer.As shown in Figure 7, the lug ejector is divided into upper and lower two-layer, and the upper strata is a conductive layer, and lower floor is an insulating barrier, is welded on the top of conductive layer after lug passes hole on the lug ejector from the below of insulating barrier.
Embodiment 3
A kind of cylindrical battery, comprise cover plate, connector, lug ejector, second pad, volume core, its difference from Example 2 is, do not establish hole on the lug ejector, as shown in Figure 8, be welded on the top of conductive layer after lug is stretched out by the edge of lug ejector from the below of insulating barrier.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.

Claims (10)

1. cylindrical battery, comprise cover plate (1) and cylindrical roll core (7), the end of described volume core (7) is extended with lug (4), described lug (4) comprises anode ear and negative electrode lug, it is characterized in that: also be provided with the discoid lug ejector that is placed on volume core end, described lug ejector has the insulating barrier that contact with volume core end and away from the conductive layer of rolling up the core end, described lug (4) is electrically connected with conductive layer, and described conductive layer is electrically connected with cover plate (1).
2. cylindrical battery as claimed in claim 1 is characterized in that: described anode ear and negative electrode lug are respectively a plurality of.
3. cylindrical battery as claimed in claim 2, it is characterized in that: described lug ejector is the structure of insulating barrier and the compound one of conductive layer, offer at least one axial porosity on the described lug ejector, described a plurality of lugs (4) are electrically connected with conductive layer after running through described axial porosity respectively.
4. cylindrical battery as claimed in claim 2, it is characterized in that: described lug ejector comprises insulation spacer (6) and first pad (5), described insulation spacer (6) forms described insulating barrier, described first pad (5) forms described conductive layer, offer at least one axial porosity (601) on the described insulation spacer (6), offer at least one axial porosity (602) on described first pad (5), axial porosity (601) and the back of the axial porosity (501) on first pad (5) that described a plurality of lugs (4) run through respectively on the described insulating trip (6) are electrically connected with first pad (5).
5. cylindrical battery as claimed in claim 4 is characterized in that: axial porosity (601) and the axial porosity (501) on first pad (5) on the described insulating trip (6) are fan-shaped hole.
6. as any described cylindrical battery in the claim 1 to 5, it is characterized in that: also comprise connector, be stacked in the conductive layer of lug ejector and discoid second pad (3) between the cover plate (1), described connector is pressed on lug (4) between the conductive layer of second pad (3) and lug ejector.
7. cylindrical battery as claimed in claim 6 is characterized in that: described second pad (3) is gone up and the corresponding disk card of lug (4) is provided with axial porosity (301).
8. cylindrical battery as claimed in claim 7 is characterized in that: the described axial porosity of stating on second pad (301) is fan-shaped hole.
9. cylindrical battery as claimed in claim 6, it is characterized in that: described connector is a bolt connection piece, the screw rod of described bolt connection piece (502) is fixedly installed on the conductive layer of lug ejector, and by nut (2) second pad (3) is pressed on the conductive layer of lug ejector.
10. cylindrical battery as claimed in claim 6 is characterized in that: the conductive layer of described lug ejector is electrically connected with described connector, and described cover plate (1) is provided with pole (104), and described connector is electrically connected with pole (104) on the cover plate (1).
CNU2008201466314U 2008-08-15 2008-08-15 Cylinder battery Expired - Lifetime CN201266633Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201466314U CN201266633Y (en) 2008-08-15 2008-08-15 Cylinder battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201466314U CN201266633Y (en) 2008-08-15 2008-08-15 Cylinder battery

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010017782A1 (en) * 2008-08-15 2010-02-18 深圳市比克电池有限公司 Connection structure and assembly method between battery lug and cover plate
CN106784440A (en) * 2017-01-04 2017-05-31 国轩新能源(苏州)有限公司 Cylindrical battery elastic press type block
CN108520936A (en) * 2018-03-16 2018-09-11 深圳市沃特玛电池有限公司 A kind of aluminum shell column battery
CN109980172A (en) * 2019-03-28 2019-07-05 安徽泰能新能源科技有限公司 A kind of insulation spacer and the cylindrical lithium battery with the gasket
CN111668407A (en) * 2019-03-08 2020-09-15 比亚迪股份有限公司 Battery module and vehicle with same
CN114678663A (en) * 2022-04-14 2022-06-28 广州小鹏汽车科技有限公司 Pole lug connecting structure of cylindrical battery and cylindrical battery
CN115133037A (en) * 2022-05-28 2022-09-30 楚能新能源股份有限公司 Lithium ion battery current collection structure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010017782A1 (en) * 2008-08-15 2010-02-18 深圳市比克电池有限公司 Connection structure and assembly method between battery lug and cover plate
CN106784440A (en) * 2017-01-04 2017-05-31 国轩新能源(苏州)有限公司 Cylindrical battery elastic press type block
CN106784440B (en) * 2017-01-04 2021-11-19 上海电气国轩新能源科技(苏州)有限公司 Cylinder battery spring type cap
CN108520936A (en) * 2018-03-16 2018-09-11 深圳市沃特玛电池有限公司 A kind of aluminum shell column battery
CN111668407A (en) * 2019-03-08 2020-09-15 比亚迪股份有限公司 Battery module and vehicle with same
CN111668407B (en) * 2019-03-08 2022-04-15 比亚迪股份有限公司 Battery module and vehicle with same
CN109980172A (en) * 2019-03-28 2019-07-05 安徽泰能新能源科技有限公司 A kind of insulation spacer and the cylindrical lithium battery with the gasket
CN114678663A (en) * 2022-04-14 2022-06-28 广州小鹏汽车科技有限公司 Pole lug connecting structure of cylindrical battery and cylindrical battery
CN115133037A (en) * 2022-05-28 2022-09-30 楚能新能源股份有限公司 Lithium ion battery current collection structure

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Owner name: SHENZHEN BIKE HAOZE VENTURE INVESTMENT CO., LTD.

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Address after: 518000 Shenzhen city Longgang District Center City Tianjian modern city garden 3 B unit 1005

Patentee after: Shenzhen city Beek Haoze Venture Investment Company Limited

Address before: 518000 Beek Industrial Park, Kwai Chung street, Longgang District, Guangdong, Shenzhen

Patentee before: Shenzhen Bak Battery Co., Ltd.

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Address after: Zhongmu County, Henan province 451450 city of Zhengzhou Zheng An Zhen Liu Qiaocun

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Denomination of utility model: Manufacturing method of cylindrical battery

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