CN203415646U - Pole plate type battery cell group series connection structure - Google Patents

Pole plate type battery cell group series connection structure Download PDF

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Publication number
CN203415646U
CN203415646U CN201320329590.3U CN201320329590U CN203415646U CN 203415646 U CN203415646 U CN 203415646U CN 201320329590 U CN201320329590 U CN 201320329590U CN 203415646 U CN203415646 U CN 203415646U
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CN
China
Prior art keywords
type battery
plate
polar
sheet
copper
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Active
Application number
CN201320329590.3U
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Chinese (zh)
Inventor
孙勇
李永江
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LISHEN (QINGDAO) NEW ENERGY CO.,LTD.
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Tianjin Lishen Battery JSCL
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Priority to CN201320329590.3U priority Critical patent/CN203415646U/en
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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

Abstract

The utility model belongs to the technical field of battery packs, and in particular relates to a pole plate type battery cell group series connection structure. The structure comprises a plurality of pole plate type battery cells which are in series connection with one another through copper-nickel composite pieces; each copper-nickel composite piece comprises a copper sheet and a nickel sheet connected with the copper sheet; each nickel sheet is divided into a positive pole zone and a negative pole zone, which are respectively and correspondingly welded with positive plates and negative plates of two adjacent battery cells through a resistance spot welding manner so as to form a plurality of welding points on the surfaces of the positive pole zone and a negative pole zone. The structure can meet high-current discharge performance requirement of the pole plate type battery cells, saves space for a battery system, meanwhile, enables the processing and welding technology to be simple and convenient, and improves the energy density and the power density of the battery system.

Description

A kind of connect in series structure of polar-plate-type battery core group
Technical field
The utility model belongs to battery pack technical field, is specifically related to a kind of connect in series structure of polar-plate-type battery core group.
Background technology
Lithium ion battery group has been widely used in every field, is especially applied to motor vehicle field.In field of hybrid electric vehicles, need larger power offer motor, cell to put a power larger.At present in field of hybrid electric vehicles, monomer battery core has been connected by soft copper sheet with the series and parallel between battery core, although this structure can meet the performance requirement of large electric current, but its shortcoming is the larger space that takies battery case, the indexs such as energy density to battery case have formed unfavorable factor, and its manufacturing cost is higher, is unfavorable for industrialized development.
Utility model content
The purpose of this utility model is to provide a kind of large electric current but also ease of assembly not only can born with the connect in series structure of the polar-plate-type battery core group of enhancing productivity.
For achieving the above object, the utility model adopts following technical scheme:
A connect in series structure for polar-plate-type battery core group, comprises a plurality of polar-plate-type battery cores, and described a plurality of polar-plate-type battery cores are connected in series by a plurality of copper nickel compound pieces; Described copper nickel compound piece comprises copper sheet and the nickel sheet being connected with described copper sheet, and described positive polar region and negative pole the district respectively positive and negative pole plate of two corresponding and adjacent described battery cores are welded and formed a plurality of pads on the surface in described positive polar region and negative pole district by resistance spot welding mode.
The pad of described positive polar region is 20.
The pad in described negative pole district is 18.
Described nickel sheet and described copper sheet weld by Laser Welding mode.
The utility model can meet the heavy-current discharge performance of polar-plate-type battery core, for battery system has been saved space, makes processing and welding procedure simple and convenient simultaneously, energy density and the power density of battery system that raising is electric.
Accompanying drawing explanation
Figure 1 shows that the structural representation of polar-plate-type battery core;
Figure 2 shows that the structural representation of the polar-plate-type battery core group of the copper nickel compound piece connection that the utility model embodiment provides;
Figure 3 shows that the structural representation of copper nickel compound piece;
Figure 4 shows that the structural representation of nickel sheet;
Figure 5 shows that the structural representation of copper sheet.
Embodiment
Below, in conjunction with example, substantive distinguishing features of the present utility model and advantage are further described, but the utility model is not limited to listed embodiment.
Refer to shown in Fig. 1~5, a kind of connect in series structure of polar-plate-type battery core group, comprises a plurality of polar-plate-type battery cores 1, and each polar-plate-type battery core 1 comprises a negative plate plate 11, a positive plate plate 12; Described a plurality of polar-plate-type battery core 1 is connected in series by copper nickel compound piece 2; Described copper nickel compound piece comprises copper sheet 23 and the nickel sheet being connected with described copper sheet 23, described nickel sheet includes the 21, negative pole district, positive polar region 22 of welding mutually by the point of resistance mode of welding for the positive plate 12 with adjacent two described polar-plate-type battery cores 1, negative plate 11, after welding by resistance spot welding mode, the surface in 21, negative pole district, described positive polar region 22 forms a plurality of pads for loaded current.
Further, the pad 221 of described positive polar region 21 is 20.
Further, the pad 222 in described negative pole district 21 is 18.
In the utility model embodiment, the 21He negative pole district, positive polar region 22 of described nickel sheet all adopts both-end Welding Structure, make the solder joint of a positive plate of battery core reach 20, the solder joint of a negative plate reaches 18, take full advantage of the contact area of battery core pole plate, current-carrying area is maximized, make copper nickel compound piece realize the function of transshipping large electric current.
Preferably, described nickel sheet and described copper sheet weld by Laser Welding mode.
Concrete, on described nickel sheet, divide into the positive polar region 21 that the positive plate for the battery core 1 adjacent with two is connected with negative plate, negative pole district 22, described positive polar region 21, negative pole district 22 is connected by connecting portion 24, described copper sheet 23 has the positive polar region 21 with described nickel sheet, negative pole district 22 is accordingly for described positive polar region 21, the anodal viewing area 235 in negative pole district 22, negative pole viewing area 234, described anodal viewing area 235, it between negative pole viewing area 234, is bonding pad 236, described bonding pad 236 is welded mutually and described nickel sheet and described copper sheet is linked together with the connecting portion 24 of described nickel sheet.
Further, described in each, on copper sheet 23, by two holes 232 that press, press and be connected with two bolts 231, by being threaded to realize with described two bolts 231 with nut 3, supervisory signal line is fixed on described screw 231.
It should be noted that, the thickness of described nickel sheet can be determined according to the actual requirements, is generally no more than 0.3mm, and the thickness of described copper sheet can be adjusted according to the actual requirements.
Be all that one side is different from coupling part loaded current ability between nickel sheet in structure in the past and copper sheet, in the utility model structure, the four direction of nickel sheet all utilized, greatly increased the connection area of nickel sheet and pole plate; The screw 231 that separately pressed on described copper sheet 23, can utilize supervisory signal line nut 3 to be fixed on screw 231, compares common inserting terminal more reliable, and assembling production efficiency is higher.
The utility model is by adopting the bus structures of copper nickel compound piece, can guarantee large sectional area, to meet large conveyance capacity, using nickel sheet as the material that connects battery core, take copper sheet as concentrating the material of electric current, nickel sheet and copper sheet adopt Laser Welding technique to weld together, and battery core pole plate and nickel sheet weld together by resistance spot welding mode.The electric current of single battery core focuses on copper sheet by nickel sheet, then focuses on one end by copper sheet, by bolt, is connected with next battery core.The electrical current carriers of battery core and nickel sheet is mainly the solder joint of resistance spot welding.
The utility model can be applicable in the lithium-ion battery systems of hybrid vehicle, due to reasonability and the perfection of structure, has significantly improved the energy density of battery pack, has improved the manufacturability in assembling.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims (4)

1. a connect in series structure for polar-plate-type battery core group, is characterized in that, comprises a plurality of polar-plate-type battery cores, and described a plurality of polar-plate-type battery cores are connected in series by a plurality of copper nickel compound pieces; Described copper nickel compound piece comprises copper sheet and the nickel sheet being connected with described copper sheet, described nickel sheet is distinguished anodal district and negative pole district, and described positive polar region and negative pole the district respectively positive and negative pole plate of two corresponding and adjacent described battery cores are welded and formed a plurality of pads on the surface in described positive polar region and negative pole district by resistance spot welding mode.
2. the connect in series structure of polar-plate-type battery core group according to claim 1, is characterized in that, the pad of described positive polar region is 20.
3. the connect in series structure of polar-plate-type battery core group according to claim 1, is characterized in that, the pad in described negative pole district is 18.
4. the connect in series structure of polar-plate-type battery core group according to claim 1, is characterized in that, described nickel sheet and described copper sheet weld by Laser Welding mode.
CN201320329590.3U 2013-06-08 2013-06-08 Pole plate type battery cell group series connection structure Active CN203415646U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320329590.3U CN203415646U (en) 2013-06-08 2013-06-08 Pole plate type battery cell group series connection structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320329590.3U CN203415646U (en) 2013-06-08 2013-06-08 Pole plate type battery cell group series connection structure

Publications (1)

Publication Number Publication Date
CN203415646U true CN203415646U (en) 2014-01-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320329590.3U Active CN203415646U (en) 2013-06-08 2013-06-08 Pole plate type battery cell group series connection structure

Country Status (1)

Country Link
CN (1) CN203415646U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106299482A (en) * 2016-10-14 2017-01-04 四川赛尔雷新能源科技有限公司 A kind of high-voltage lithium connected based on naked battery core

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106299482A (en) * 2016-10-14 2017-01-04 四川赛尔雷新能源科技有限公司 A kind of high-voltage lithium connected based on naked battery core

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20220124

Address after: 266500 Minshan Road, Huangdao District, Qingdao, Shandong

Patentee after: LISHEN (QINGDAO) NEW ENERGY CO.,LTD.

Address before: 300384 Tianjin Xiqing District Binhai hi tech Industrial Development Zone (outer ring) 38 Haitai South Road

Patentee before: TIANJIN LISHEN BATTERY JOINT-STOCK Co.,Ltd.