CN203071159U - Plastic casing lithium ion secondary battery with multiple cell wraps - Google Patents

Plastic casing lithium ion secondary battery with multiple cell wraps Download PDF

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Publication number
CN203071159U
CN203071159U CN2013200880214U CN201320088021U CN203071159U CN 203071159 U CN203071159 U CN 203071159U CN 2013200880214 U CN2013200880214 U CN 2013200880214U CN 201320088021 U CN201320088021 U CN 201320088021U CN 203071159 U CN203071159 U CN 203071159U
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CN
China
Prior art keywords
plate
cover plate
cell
plastic casing
negative
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 - Fee Related
Application number
CN2013200880214U
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Chinese (zh)
Inventor
张守祥
文一波
李雷
涂国营
吴传勇
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.)
Soundon New Energy Technology Co Ltd
Original Assignee
HUNAN SOUNDDON NEW ENERGY 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 HUNAN SOUNDDON NEW ENERGY CO Ltd filed Critical HUNAN SOUNDDON NEW ENERGY CO Ltd
Priority to CN2013200880214U priority Critical patent/CN203071159U/en
Application granted granted Critical
Publication of CN203071159U publication Critical patent/CN203071159U/en
Anticipated expiration legal-status Critical
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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
    • 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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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  • Connection Of Batteries Or Terminals (AREA)

Abstract

The utility model discloses a plastic casing lithium ion secondary battery with multiple cell wraps. The plastic casing lithium ion secondary battery comprises a positive plate, diaphragm paper, a negative plate, a plastic casing, a plastic casing cover plate and a cover plate stud, wherein the cover plate stud is composed of a conductive pole on the upper half part and a connection plate on the lower half part; the positive plate and the negative plate are arranged on two sides of the diaphragm paper in a laminated manner; the positive plate, the diaphragm paper and the negative plate form a cell group; the cell group is packed to form a cell wrap; a plurality of cell wraps are bundled up in parallel; cell wrap tabs of the cell wraps are connected with the connection plate; the cell wraps are arranged in the plastic casing; and ending adhesive tapes are stuck on the cell wraps. By connecting the tabs of the multiple cell wraps and connecting the cell wrap tabs with the connection plate though a ultrasonic welder, the plastic casing lithium ion secondary battery provided by the utility model solves the problems of large internal resistance dispersion, high possibility of tab fracture, metal dusts and inadaptability to high-rate discharge of a large-capacity high-power laminated battery, and has the advantages of long service life and high safety and reliability.

Description

The plastic material case lithium ion of a kind of multicore secondary cell
Technical field
The utility model relates to a kind of lithium rechargeable battery, particularly the plastic material case lithium ion of a kind of multicore secondary cell.
Background technology
In recent years, lithium battery because operating voltage height, energy density are big, memory-less effect, have extended cycle life, advantage such as pollution-free, be applied to more and more widely progressively replace the major product that traditional rechargeable battery becomes field of batteries in consumption, power, energy storage and the special purpose battery.Expansion along with market, demand to the large-capacity high-power lithium ion secondary battery is also increasing, as mobile communication base station, the peaking power source of wind and light generating system, car lithium battery bag, the frigid zone first aid of the back-up source class markets such as stand-by power supply and frigid zone electric motor car power supply of speedily carrying out rescue work very big demand is arranged all.The big capacity plastic housing core of lithium ion cell bag lug of present known lamination connects usual way with cover plate to be had: ultrasonic bonding, double-screw bolt are connected and the laser penetration welding; Wherein connect in the majority with ultrasonic bonding, double-screw bolt.
The shortcoming of traditional ultrasonic bonding has: the soldering polar ear number of plies is usually less than 100 layers, and after the welding number of plies increases, power output in the time of must improving the supersonic welder welding, the high temperature that its moment produces cause that easily the diaphragm paper at lug place shrinks, and forms potential safety hazard; Ultrasonic equipment maintenance difficulty, the welding number of plies is more than 80 layers the time, usually be under the hard service, the welding machine consistency of product descends, its rosin joint product is difficult to be aware, influence the consistency of battery, be unfavorable for follow-up battery combo and assembling, influence fail safe and the reliability of battery.
The internal resistance of cell that double-screw bolt connects is big, only is suitable for the continuous discharge of the following electric current of normal temperature 1C usually, can't satisfy the required high power requirement of equipment, and for example more than 1m Ω, discharge-rate is poor usually for 50Ah lithium rechargeable battery 1KHz AC impedance.
The utility model content
In order to solve the problems of the technologies described above, the utility model provides that a kind of internal resistance is low, long service life, the safe and reliable plastic material case lithium ion of multicore secondary cell.
The technical scheme that the utility model addresses the above problem is: the plastic material case lithium ion of a kind of multicore secondary cell, comprise positive plate, diaphragm paper, negative plate, plastic housing, plastic housing cover plate and cover plate double-screw bolt, described cover plate double-screw bolt is made of the conduction pole of the first half and the brace of the latter half; The brace of the anodal conductive pole of plastic housing cover plate lower end is with after the positive plate anode ear links to each other, pass the positive terminal hole of reserving on the plastic housing cover plate, form anode behind the gluing clamp nut, the brace of plastic housing cover plate negative pole conductive pole lower end is with after the negative plate negative electrode lug links to each other, pass the negative terminal hole of reserving on the plastic housing cover plate, form battery cathode behind the gluing clamp nut, positive plate, the stacked two sides that is arranged in diaphragm paper of negative plate, positive plate, diaphragm paper, negative plate constitutes electric core utmost point group, described electric core utmost point group packing back forms the core bag, a plurality of core bags band together side by side, and the core bag lug of described core bag is connected on the brace, and described core bag is positioned at plastic housing.
Above-mentioned core is wrapped and is posted the ending gummed paper.
The beneficial effects of the utility model are: the utility model adopts the parallel connection of multicore bag lug, core bag lug is connected by supersonic welder with brace, the welding machine number of plies of battery pole ear reduces to below 50 layers, supersonic welding acc power output when reducing the lug welding effectively disappears, reduce the diaphragm paper contraction that the lug caloric value causes, lug breaks, improve the consistency of lug welding, stop rosin joint hidden danger to the influence of cell resistance, improve the consistency of battery, solving large-capacity high-power laminated batteries lug, once to weld more than 80 layers internal resistance of cell dispersion with ultrasonic bond big, lug breaks easily, produce metallic dust, be not suitable for the problem of high-multiplying power discharge, long service life, safe and reliable.
Description of drawings
Fig. 1 is the end view of the utility model core bag.
Fig. 2 is the front view of the utility model core bag.
Fig. 3 is the utility model multicore bag lug and brace welding schematic diagram.
Fig. 4 is the utility model plastic housing lithium rechargeable battery schematic diagram.
Among the figure: 1. single core bag lug prewelding solder joint, 2. core bag negative electrode lug solder joint, 3. core bag anode ear solder joint, 4. electric core utmost point group, 5. laminated batteries core bag, 6. ending gummed paper, 7. core bag lug, the 8. first core bag, the 9. second core bag, 10. brace, 11. plastic housing cover plates, 12. conduction poles, 13. nuts.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1 and Figure 2, the utility model comprises positive plate, diaphragm paper, negative plate, and positive plate, negative plate are arranged in the two sides of diaphragm paper, and positive plate, diaphragm paper, negative plate constitute electric core utmost point group 4, described electric core utmost point group 4 packing backs form core bag 5, post ending gummed paper 6 on the core bag 5.
As shown in Figure 3, the first core bag 8 and the second core bag 9 band together side by side, the core bag lug 7 of the first core bag 8 and 9 two core bags of the second core bag is connected on the brace 10, the cover plate double-screw bolt is made of the conduction pole 12 of the first half and the brace 10 of the latter half, the conduction pole 12 of cover plate double-screw bolt passes the reservation pole hole of plastic housing cover plate 11, by clamp nut 13 cover plate double-screw bolt and plastic housing cover plate 11 are fixed together, make the conduction pole 12 of cover plate double-screw bolt form electrode.
As shown in Figure 4, be placed with core bag, electrolyte and insulating support in the plastic housing, close lid back iron plate sealing mouth.

Claims (2)

1. the plastic material case lithium ion of multicore secondary cell, comprise positive plate, diaphragm paper, negative plate, plastic housing, plastic housing cover plate and cover plate double-screw bolt, it is characterized in that: described cover plate double-screw bolt is made of the conduction pole of the first half and the brace of the latter half; The brace of the anodal conductive pole of plastic housing cover plate lower end is with after the positive plate anode ear links to each other, pass the positive terminal hole of reserving on the plastic housing cover plate, form anode behind the gluing clamp nut, the brace of plastic housing cover plate negative pole conductive pole lower end is with after the negative plate negative electrode lug links to each other, pass the negative terminal hole of reserving on the plastic housing cover plate, form battery cathode behind the gluing clamp nut, positive plate, the stacked two sides that is arranged in diaphragm paper of negative plate, positive plate, diaphragm paper, negative plate constitutes electric core utmost point group, described electric core utmost point group packing back forms the core bag, a plurality of core bags band together side by side, and the core bag lug of described core bag is connected on the brace, and described core bag is positioned at plastic housing.
2. the plastic material case lithium ion of multicore as claimed in claim 1 secondary cell, it is characterized in that: described core is wrapped and is posted the ending gummed paper.
CN2013200880214U 2013-02-27 2013-02-27 Plastic casing lithium ion secondary battery with multiple cell wraps Expired - Fee Related CN203071159U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013200880214U CN203071159U (en) 2013-02-27 2013-02-27 Plastic casing lithium ion secondary battery with multiple cell wraps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013200880214U CN203071159U (en) 2013-02-27 2013-02-27 Plastic casing lithium ion secondary battery with multiple cell wraps

Publications (1)

Publication Number Publication Date
CN203071159U true CN203071159U (en) 2013-07-17

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103730625A (en) * 2013-12-31 2014-04-16 张晓红 Lithium-ion battery with high rate discharge performance
CN109148969A (en) * 2018-09-29 2019-01-04 东莞维科电池有限公司 A kind of preparation method of battery battery core
CN109687011A (en) * 2018-12-25 2019-04-26 湖北金泉新材料有限责任公司 A kind of laminated lithium ion battery and preparation method thereof
CN114122530A (en) * 2021-11-22 2022-03-01 合肥国轩高科动力能源有限公司 Roll core, square all-electrode-lug lithium ion battery and battery manufacturing method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103730625A (en) * 2013-12-31 2014-04-16 张晓红 Lithium-ion battery with high rate discharge performance
CN109148969A (en) * 2018-09-29 2019-01-04 东莞维科电池有限公司 A kind of preparation method of battery battery core
CN109687011A (en) * 2018-12-25 2019-04-26 湖北金泉新材料有限责任公司 A kind of laminated lithium ion battery and preparation method thereof
CN109687011B (en) * 2018-12-25 2024-05-03 湖北亿纬动力有限公司 Laminated lithium ion battery and manufacturing method thereof
CN114122530A (en) * 2021-11-22 2022-03-01 合肥国轩高科动力能源有限公司 Roll core, square all-electrode-lug lithium ion battery and battery manufacturing method

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: 411100 Hunan province Xiangtan City Jiuhua Demonstration Zone No. 78 West Benz

Patentee after: Thornton Amperex Technology Limited

Address before: 888 No. 411201 Hunan city of Xiangtan province Xiangshui District Economic Zone Jiuhua Road

Patentee before: Hunan Sounddon New Energy Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130717

Termination date: 20210227