CN108735938B - Nonporous battery module with welding-free lugs - Google Patents

Nonporous battery module with welding-free lugs Download PDF

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Publication number
CN108735938B
CN108735938B CN201810412343.7A CN201810412343A CN108735938B CN 108735938 B CN108735938 B CN 108735938B CN 201810412343 A CN201810412343 A CN 201810412343A CN 108735938 B CN108735938 B CN 108735938B
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China
Prior art keywords
battery module
welding
utmost point
inclined plane
point ear
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CN201810412343.7A
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Chinese (zh)
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CN108735938A (en
Inventor
鲁怀敏
魏本建
肖红飞
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Shazhou Professional Institute of Technology
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Shazhou Professional Institute of Technology
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • 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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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The invention discloses a non-welding and non-porous battery module with tabs, which comprises: battery monomer, U-shaped connection piece, slide wedge clamp plate, utmost point ear connecting plate, packing area, baffle and bottom plate, the winding of packing area is fixed inboard battery monomer on two bottom plates, battery monomer top is provided with utmost point ear, utmost point ear connecting plate sets up in utmost point ear top, the interval is provided with the inclined plane groove that corresponds with utmost point ear on the utmost point ear connecting plate, utmost point ear extends to the inclined plane inslot respectively, U-shaped connection piece both ends extend to two adjacent inclined plane inslots respectively, the slide wedge clamp plate sets up on utmost point ear connecting plate and the bottom is provided with the briquetting that extends to the inclined plane inslot and extrudees U-shaped connection piece and utmost point ear fixedly. Through the mode, the welding-free and hole-free battery module with the lug is convenient to assemble and disassemble, convenient to install, high in working efficiency, good in structural stability and not easy to loosen.

Description

Nonporous battery module with welding-free lugs
Technical Field
The invention relates to the technical field of lithium battery modules, in particular to a non-welded and non-porous battery module with lugs.
Background
The lithium battery pack is formed by connecting a plurality of batteries in series or in parallel through tabs, so that the reliability and convenience of connection are very important.
Since the battery pack includes a large number of unit cells, the connection work between the tabs is large when the number is large. Most of the existing lithium battery tab connection modes adopt welding or bolt connection after punching of tabs. Although the welding mode is reliable, the problem of insufficient welding is easy to occur, and once one battery has a problem, basically the whole battery module is scrapped, and the damaged battery is difficult to disassemble; the bolted connection is less reliable and less attractive, and also adds unnecessary weight. Therefore, a tab connection mode which is convenient to detach and reliable in connection is needed.
Disclosure of Invention
The invention mainly solves the technical problem of providing a welding-free and hole-free battery module with lugs, which avoids the welding and punching of the lugs and improves the installation convenience and the structural stability.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a welding sclausura battery module is exempted from to utmost point ear includes: battery monomer, U-shaped connection piece, slide wedge clamp plate, utmost point ear connecting plate, packing area, baffle and bottom plate, the baffle interval sets up between two bottom plates, battery monomer sets up respectively between two adjacent baffles, the packing area winding is fixed to inboard battery monomer on two bottom plates, battery monomer top is provided with utmost point ear, utmost point ear connecting plate sets up in utmost point ear top, the interval is provided with the inclined plane groove that corresponds with utmost point ear on the utmost point ear connecting plate, utmost point ear extends to the inclined plane inslot respectively, U-shaped connection piece both ends extend to two adjacent inclined plane inslots respectively, the slide wedge clamp plate sets up on utmost point ear connecting plate and the bottom is provided with the briquetting that extends to the inclined plane inslot and extrudees fixedly to U-shaped connection piece and utmost point ear.
In a preferred embodiment of the present invention, the separator is a stamped and formed piece, and two sides and a bottom of the separator are respectively bent to form a two-step bent plate structure for positioning the battery cells and fastening the separator with each other.
In a preferred embodiment of the present invention, the battery cell is a soft-package lithium ion power battery cell.
In a preferred embodiment of the present invention, two side walls inside the inclined plane groove are respectively a first vertical surface and a first inclined surface, and two sides of the pressing block are provided with a second vertical surface and a second inclined surface corresponding to the first vertical surface and the first inclined surface.
In a preferred embodiment of the invention, the U-shaped connecting piece and the tab are respectively located between the corresponding first vertical surface and the second vertical surface, and the first slope surface is in contact with the corresponding second slope surface.
In a preferred embodiment of the invention, the wedge pressing plate is provided with a first screw connected with the tab connecting plate.
In a preferred embodiment of the present invention, a sealant is disposed on the first screw.
In a preferred embodiment of the invention, the battery module further comprises an L-shaped connecting sheet for leading out the positive electrode and the negative electrode of the battery module, the L-shaped connecting sheet is of a copper-based surface nickel plating structure, the L-shaped connecting sheet is positioned on the tab connecting plate and connected with the corresponding wedge pressing plate by adopting a second screw, and the bottom of the L-shaped connecting sheet extends into the corresponding inclined groove to be connected with the corresponding U-shaped connecting sheet and the tab.
In a preferred embodiment of the present invention, the bottom plate is provided with a second positioning groove corresponding to the tab connection plate, and two ends of the tab connection plate are respectively located in the corresponding second positioning grooves and fixed by a third screw.
In a preferred embodiment of the present invention, third positioning grooves corresponding to the packing belt are respectively disposed above and below the bottom plate.
The invention has the beneficial effects that: the non-welded and non-porous battery module with the lugs is convenient to assemble and disassemble, can be disassembled only by shearing a packing belt, is convenient to maintain, is tightly connected with the lugs, the U-shaped connecting sheets and the lug connecting plates through the wedge pressing plates, can set the angle of the connected inclined plane to be small, realizes self-locking, and has the advantages of large contact surface and pressing force, small connected contact resistance, convenience in installation, high working efficiency, good structural stability and difficulty in loosening.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a schematic structural view of a non-welded and non-porous battery module with tabs according to a preferred embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
fig. 3 is an exploded view of fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, an embodiment of the invention includes:
a welding-free nonporous battery module of a tab comprises: battery monomer 5, U-shaped connection piece 9, slide wedge clamp plate 10, utmost point ear connecting plate 11, packing area 1, baffle 3 and bottom plate 6, 3 intervals of baffle set up between two bottom plates 6, battery monomer 5 sets up respectively between two adjacent baffles 3, and it fills to be provided with heat conduction glue 7 in the clearance, and structural stability is high, reduces local overheated problem.
The baffle is the punching press forming part, and both sides and bottom are buckled respectively and are had two-stage step bent plate structure 13, and battery monomer 5 is located and carries on spacingly between three two-stage step bent plate structure 13, and adjacent baffle 3 utilizes two-stage step bent plate structure 13 to superpose the lock, stable in structure.
The utility model discloses a packing belt, including packing belt 1, packing belt 6, the inboard battery monomer 5 of packing belt 1 winding is fixed on two bottom plates 6, 6 tops of bottom plates and below are provided with the third constant head tank 2 that corresponds with packing belt 1 respectively, avoid the slippage of packing belt 1, and stable in structure, whole battery module dismouting is also more convenient, as long as it can unpack apart to cut packing belt 1, maintains the facility.
The battery monomer 5 is a flexible package lithium ion power battery monomer, the top of the battery monomer 5 is provided with two tabs 4, and the tabs 4 of the battery monomer 5 are divided into a positive electrode and a negative electrode.
Utmost point ear connecting plate 11 sets up in utmost point ear 4 top, the interval is provided with the inclined plane groove that corresponds with utmost point ear 4 on utmost point ear connecting plate 11, utmost point ear 4 extends to the inclined plane inslot respectively, 9 both ends of U-shaped connection piece extend to two adjacent inclined plane inslots respectively, slide wedge clamp plate 10 sets up on utmost point ear connecting plate 11 and the bottom is provided with the briquetting that extends to the inclined plane inslot and extrudees fixedly to U-shaped connection piece 9 lateral wall and utmost point ear 4, and U-shaped connection piece 9 is inseparable with utmost point ear 4's connection, difficult pine takes off.
The two side walls of the inner portion of the inclined plane groove are respectively a first vertical surface and a first inclined plane, and a second vertical surface and a second inclined plane which correspond to the first vertical surface and the first inclined plane are arranged on the two sides of the pressing block. The U-shaped connecting piece 9 and the lug 4 are respectively positioned between the corresponding first vertical surface and the corresponding second vertical surface, the first slope surface is in contact with the corresponding second slope surface, the contact area is large, the structural stability is good, the contact surface and the pressing force are large, and the contact resistance of the connecting position is small.
Be provided with the first screw of being connected with utmost point ear connecting plate 11 on the slide wedge clamp plate 10, utmost point ear connecting plate 11 adopts insulating plastic slab, light in weight, and is with low costs, and the safety in utilization is high, be provided with sealed glue on the first screw, avoid the pine of first screw to take off the problem, use the reliability height.
In order to be connected with battery management equipment conveniently, the battery module further comprises an L-shaped connecting sheet 8 used for leading out the positive electrode and the negative electrode of the battery module, the L-shaped connecting sheet 8 is of a copper-based surface nickel plating structure and is good in conducting effect, the L-shaped connecting sheet 8 is located on the lug connecting plate and is connected with the corresponding wedge pressing plate 10 through a second screw, the led-out lead can be fixed through the second screw, the convenience is good, the bottom of the L-shaped connecting sheet 8 extends into the corresponding inclined plane groove to be connected with the corresponding U-shaped connecting sheet 9 and the corresponding lug 4, and the structure is stable.
The bottom plate 6 is provided with a second positioning groove 12 corresponding to the lug 4 connecting plate, the two ends of the lug connecting plate 11 are respectively positioned in the corresponding second positioning grooves 12 and fixed by adopting a third screw, the positioning effect is good, and the installation and the disassembly are more convenient.
In conclusion, the welding-free and non-porous battery module with the lugs is free of welding at the lugs and punching for bolt fixing, is relatively quick to assemble and disassemble, improves maintenance convenience, and is reliable in connection position, small in contact resistance and high in use stability.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. The utility model provides a welding sclausura battery module is exempted from to utmost point ear which characterized in that includes: a battery monomer, a U-shaped connecting sheet, a tapered wedge pressing plate, a tab connecting plate, a packing belt, a clapboard and a bottom plate, the clapboards are arranged between the two bottom boards at intervals, the battery monomers are respectively arranged between the two adjacent clapboards, the packing belt is wound on the two bottom plates to fix the battery monomer at the inner side, the top of the battery monomer is provided with a pole ear, the lug connecting plates are arranged above the lugs, inclined plane grooves corresponding to the lugs are arranged on the lug connecting plates at intervals, the pole lugs extend into the inclined plane grooves respectively, two ends of the U-shaped connecting sheet extend into two adjacent inclined plane grooves respectively, the inclined wedge pressing plate is arranged on the lug connecting plate, the bottom of the inclined wedge pressing plate is provided with a pressing block extending into the inclined plane groove to extrude and fix the U-shaped connecting sheet and the lug, two sides and the bottom of the partition board are respectively bent with two-stage step bent board structures for positioning the battery monomer and buckling the partition board with each other.
2. The weld-free and nonporous battery module as recited in claim 1, wherein the separator is a stamped and formed piece.
3. The welding-free and non-porous battery module with the tabs as claimed in claim 1, wherein the battery cells are flexible-package lithium-ion power battery cells.
4. The welding-free and non-porous battery module with the tabs as claimed in claim 1, wherein the two side walls inside the inclined plane groove are respectively a first vertical surface and a first slope surface, and the two sides of the pressing block are provided with a second vertical surface and a second slope surface corresponding to the first vertical surface and the first slope surface.
5. The welding-free and non-porous battery module with the lugs as claimed in claim 4, wherein the U-shaped connecting plates and the lugs are respectively located between the corresponding first vertical surfaces and the corresponding second vertical surfaces, and the first slope surfaces are in contact with the corresponding second slope surfaces.
6. The welding-free and non-porous battery module with the tabs as claimed in claim 1, wherein the wedge pressing plate is provided with a first screw connected with the tab connecting plate.
7. The welding-free and non-porous battery module with the tabs as claimed in claim 6, wherein the first screws are provided with a sealant.
8. The non-welded and non-porous battery module with the electrode tabs as claimed in claim 1, further comprising L-shaped connecting sheets for leading out the positive and negative electrodes of the battery module, wherein the L-shaped connecting sheets are of a copper-based surface nickel plating structure, the L-shaped connecting sheets are located on the electrode tab connecting plates and connected with corresponding wedge pressing plates by second screws, and the bottoms of the L-shaped connecting sheets extend into corresponding inclined plane grooves to be connected with corresponding U-shaped connecting sheets and the electrode tabs.
9. The welding-free and non-porous battery module with the tabs as claimed in claim 1, wherein the bottom plate is provided with second positioning grooves corresponding to the tab connection plates, and two ends of the tab connection plates are respectively located in the corresponding second positioning grooves and fixed by third screws.
10. The welding-free and non-porous battery module with the tabs as claimed in claim 1, wherein third positioning grooves corresponding to the packing belts are respectively formed above and below the bottom plate.
CN201810412343.7A 2018-05-03 2018-05-03 Nonporous battery module with welding-free lugs Active CN108735938B (en)

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CN108735938B true CN108735938B (en) 2020-11-03

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110993873B (en) * 2019-12-28 2023-10-03 广州宝狮新能源有限公司 Soft package cell assembly device, soft package cell module and method for assembling soft package cell module
CN111446393A (en) * 2020-03-19 2020-07-24 荣盛盟固利新能源科技有限公司 Quick battery module in groups
JP7433305B2 (en) * 2020-07-17 2024-02-19 東莞新能安科技有限公司 battery module
CN111916600A (en) * 2020-07-17 2020-11-10 东莞新能安科技有限公司 Battery module
CN112563651A (en) * 2020-12-25 2021-03-26 东莞新能安科技有限公司 Connection structure of tab and bus bar, electrochemical device and electric device
CN112736370B (en) * 2021-01-11 2023-01-03 河南锂动电源有限公司 Non-welding double-end detachable tab for battery

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104037373A (en) * 2014-05-22 2014-09-10 江苏华东锂电技术研究院有限公司 Battery pack and battery module provided with battery pack
CN107910485A (en) * 2017-10-16 2018-04-13 苏州立源信智能科技有限公司 A kind of lithium electricity module lug bindiny mechanism

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Publication number Priority date Publication date Assignee Title
JPH08250150A (en) * 1995-03-15 1996-09-27 Yamaha Motor Co Ltd Storage battery

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
CN104037373A (en) * 2014-05-22 2014-09-10 江苏华东锂电技术研究院有限公司 Battery pack and battery module provided with battery pack
CN107910485A (en) * 2017-10-16 2018-04-13 苏州立源信智能科技有限公司 A kind of lithium electricity module lug bindiny mechanism

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