CN108448041B - Soft package lithium ion battery module and connection method - Google Patents
Soft package lithium ion battery module and connection method Download PDFInfo
- Publication number
- CN108448041B CN108448041B CN201810408111.4A CN201810408111A CN108448041B CN 108448041 B CN108448041 B CN 108448041B CN 201810408111 A CN201810408111 A CN 201810408111A CN 108448041 B CN108448041 B CN 108448041B
- Authority
- CN
- China
- Prior art keywords
- pole
- positive
- negative
- fixed frame
- lugs
- 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.)
- Active
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 230000017525 heat dissipation Effects 0.000 claims description 8
- 239000007769 metal material Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 210000002105 tongue Anatomy 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 230000008961 swelling Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention relates to a soft package lithium ion battery module and a connection method, wherein each battery unit comprises a fixed frame, at least two battery cells are arranged in the fixed frame side by side, a pole assembly is clamped on the fixed frame, the pole assembly comprises a pole support piece and positive and negative poles arranged in parallel, each battery cell is provided with positive and negative lugs symmetrically arranged about the center of each battery cell, the battery cells are arranged in two rows, each row of lugs are distributed on two sides of the pole, the lugs are parallel to the side surfaces of the pole and are electrically connected to the pole, a plurality of battery units are arranged in a stacked mode, and a busbar for connecting adjacent positive and negative poles in series is arranged on the top of the pole and is parallel to the top of the pole and welded. In the welding process of the tab post, the tab does not need to penetrate into the slot hole or bend, so that the assembly process of the battery module is effectively simplified, the bus bar does not need to be made of a bimetal material, and the processing difficulty and cost of the bus bar are reduced.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a soft package lithium ion battery module and a connecting method.
Background
The lithium ion battery module comprises a plurality of electric cores which are arranged in series-parallel, and the battery module is formed by mechanically and electrically connecting the electric cores. Among them, the electrical connection directly affects the performance of the battery module, and thus, is more important. For a soft package battery module, the electrical connection refers to the connection of the battery cell tab and the busbar. At present, the electrical connection of the soft package battery module mainly adopts laser welding and ultrasonic welding, and the laser welding is most adopted.
The structure of the conventional common battery module comprises a plurality of positive battery units and negative battery units, wherein a metal supporting block is embedded on a positive battery unit frame, a positive electrode lug comprises two aluminum side plates and an aluminum transverse plate which is connected with the aluminum side plates and is pressed on the metal supporting block, a metal supporting block is embedded on a negative battery unit frame, and a negative electrode lug comprises two copper side plates and a copper transverse plate which is connected with the copper side plates and is pressed on the metal supporting block; the busbar consists of copper aluminum sheets which are diffused in a solid state, and the aluminum sheets of the busbar are welded with the aluminum transverse plate and the supporting block of the positive battery unit in a laser manner during electric connection; the complex tab structure is usually realized by punching, bending or welding the tab and the like, so that certain difficulty is brought to the manufacture of the tab, and two different materials of the bus bar are connected through solid diffusion, so that the connection procedures of the different materials and the improvement of the manufacture cost are increased.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to overcome the defects in the prior art, the invention provides the soft package lithium ion battery module with simple structure, high welding reliability and low processing cost and the connecting method, and solves the problems of high cost, connection reliability risk and the like caused by the need of pretreatment such as bending or welding a leading-out sheet and the like of the tab and the adoption of different materials for connection of the busbar in the prior art.
The technical scheme adopted for solving the technical problems is as follows: the soft package lithium ion battery module comprises a plurality of battery units which are arranged in a stacking way, a front end plate and a rear end plate which are correspondingly arranged at two ends of the battery units, and a belt element which is used for bundling the battery units, the front end plate and the rear end plate together, wherein the battery units are provided with a fixed frame and a busbar which is arranged above the fixed frame, at least two battery cores which are arranged at intervals are arranged in the fixed frame, the upper ends of the battery cores are provided with positive electrode lugs and negative electrode lugs which are symmetrically arranged on the vertical central line of the battery cores and extend out from notches at the upper end of the fixed frame, and the positive electrode lugs and the negative electrode lugs are sheet-shaped metal plates;
The fixing frame is clamped with a pole assembly, the pole assembly comprises a pole support piece, and a positive pole and a negative pole which are arranged on the pole support piece at intervals, and the positive pole and the negative pole are U-shaped sheet metal plates made of the same metal material;
the busbar is of a plate-shaped structure and comprises a serial busbar used for connecting adjacent positive poles and negative poles in series, a negative busbar used for connecting the negative poles in parallel to form a module negative terminal and a positive busbar used for connecting the positive poles in parallel to form a module positive terminal;
and isolating plates for electrically isolating the bus bars are arranged between the bus bars and are fixed on the pole column assembly through buckles.
For the convenience of positioning lamination, the side wall of the fixed frame is provided with a guide groove and a positioning protrusion, and the guide groove and the positioning protrusion between adjacent fixed frames are matched to realize the positioning of the laminated battery units.
In order to improve the heat radiation performance in the use process of the battery, the fixing frame is buckled with a heat radiation plate in a bonding mode, and a notch for ensuring normal assembly of the positioning protrusion and the guide groove is arranged at the position corresponding to the guide groove on the heat radiation plate.
In order to improve the binding firmness of the battery unit modules, the fixing frame and the side surface of the heat dissipation plate are respectively provided with a groove for accommodating the belt elements.
In order to improve the normal usability of the battery, a buffer cushion for absorbing impact and preventing the battery from swelling is arranged between the battery cores.
The positive pole and the negative pole are made of metal materials with good welding adhesion with the positive pole lug and the negative pole lug, such as copper nickel plating, so as to improve welding performance.
Preferably, the positive pole and the negative pole are provided with inwards tilted retaining tongues, the fixed cross beam of the pole support piece is provided with square grooves, and the retaining tongues are clamped into the square grooves to realize the clamping connection of the positive pole and the negative pole with the pole support piece.
Further, umbrella-shaped bulges are arranged on the pole support piece and are inserted into the fixing round holes on the fixing frame and then are opened to fix the pole assembly on the fixing frame.
The connection method of the battery module comprises the following steps:
a. two or more electric cores are arranged in a fixed frame which is buckled with a radiating plate in advance, buffer pads are arranged among the electric cores, and the radiating plate is fixed with the fixed frame and the electric cores and the buffer pads by adopting glue bonding;
b. the pole assembly is arranged on the fixed frame, positive pole lugs on adjacent cells are correspondingly positioned at two sides of the positive pole, negative pole lugs on adjacent cells are correspondingly positioned at two sides of the negative pole, and the positive pole lugs are parallel to the positive pole and the negative pole lugs;
c. directing laser beams to the positive electrode lug and the negative electrode lug which are correspondingly and parallelly attached to the positive electrode post and the negative electrode post, melting the positive electrode lug and the negative electrode lug by using the laser beams, and forming metallurgical bonding between the positive electrode lug and the side surfaces of the positive electrode post and between the negative electrode lug and the negative electrode post;
d. Stacking and mounting the battery cells to the front and rear end plates, tightening the battery cells with the strap members, and mounting the buss bars on the pole assemblies;
e. And directing the laser beam to the busbar which is attached to the top surface of the pole in parallel, and melting the area of the busbar, which is overlapped with the positive pole and the negative pole by using the laser beam to form metallurgical bonding between the busbar and the top surfaces of the positive pole and the negative pole.
The beneficial effects of the invention are as follows: the positive electrode lug, the negative electrode lug and the busbar adopt a flat plate type structural member, so that the manufacturing difficulty and the cost of the electric connection structure are effectively simplified; the busbar is made of a single conductive material, so that the connection procedure of different materials and the reliability risk brought by the procedure are avoided; in the electric connection structure, the electric connection between the positive electrode lug and the negative electrode lug, the electric connection between the busbar and the positive electrode post and the electric connection between the busbar and the negative electrode post are all in surface contact connection, the overcurrent area is large, the electric connection impedance is effectively reduced, the electric connection structure is not easy to generate heat in the heavy current charging and discharging process, the electric connection structure is not easy to loosen in the use process, and the connection reliability is high; the pole component and the battery unit adopt split design, and are applicable to different series-parallel combinations, so that the universality is high.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic exploded view of the present invention.
Fig. 3 is a schematic exploded view of the battery cell according to the present invention.
Fig. 4 is a schematic exploded view of the pole assembly of the present invention.
Fig. 5 is a cross-sectional view of an electrical connection structure of the present invention.
In the figure: 1. cell 101, heat sink 102, mounting frame 103, cell 104, bumper pad 105, locating tab 106, guide slot 107, notch 108, recess 109, recess 110, circular hole 111, negative ear 112, positive ear 113, square notch 2, pole assembly 201, pole support 202, negative pole 203, positive pole 204, umbrella-shaped tab 205, mounting clip slot 206, mounting beam 207, negative pole designation 208, positive pole designation 209, V-shaped tab 210, mounting clip slot 211, retaining clip slot 3, negative pole buss 4, serial buss 5, positive buss 6, strap element 7, rear end plate 8, front end plate 9, cover plate 10, separator plate
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
A soft pack lithium ion battery module as shown in fig. 1 and 2 includes a plurality of battery cells 1 arranged in a stacked manner, a front end plate 8 provided at the front end of the battery cells 1, a rear end plate 7 provided at the rear end of the battery cells 1, and a band member 6 binding the battery cells 1, the front end plate 8 and the rear end plate 7 together, and a cap plate 9 is mounted at the upper portion of the battery cells 1 to cover the electrical connection structure of the entire battery module from being exposed to the outside.
The battery unit 1 comprises a fixed frame 102 and a busbar positioned above the fixed frame 102, wherein a heat dissipation plate 101 is attached to the front end face and two side faces of the fixed frame 102 and is adhered by an adhesive, two spaced electric cores 103 are arranged in the fixed frame 102, the upper ends of the electric cores 103 are provided with positive lugs 112 and negative lugs 111 which are symmetrical to the vertical central line of the electric cores 103 and extend out from notches at the upper ends of the fixed frame 102, the positive lugs 112 and the negative lugs 111 are sheet metal plates, and a buffer pad 104 for absorbing impact and preventing battery bulge is arranged between the two electric cores 103.
The fixed frame 102 is provided with a pole assembly 2 straddling between the two electric cores 103, the pole assembly 2 is provided with a negative pole 202 and a positive pole 203 which are symmetrically arranged relative to the central line of the pole assembly 2, wherein two negative pole lugs 111 of the two electric cores 103 are respectively positioned at two sides of the negative pole 202, two positive pole lugs 112 of the two electric cores 103 are respectively positioned at two sides of the positive pole 203, and the positive pole lugs 112, the positive pole 203 and the negative pole lugs 111 are welded with the negative pole 202 through laser beams to form metallurgical bonding.
The bus bars comprise a negative bus bar 3, a serial bus bar 4 and a positive bus bar 5, the bus bars are arranged above a negative pole 202 and a positive pole 203 at the upper part of the battery unit 1, and the bus bars are welded with the corresponding negative pole 202 and positive pole 203 through laser. And isolation plates 10 are arranged between the negative electrode bus bar 3 and the serial bus bar 4 and between the serial bus bar 4 and the positive electrode bus bar 5 and are used for electrically isolating the bus bars, so that the safety of the battery module is improved, and the isolation plates 10 are fixed on the pole assembly 2 through buckles.
As shown in fig. 3, the specific structure of the battery unit 1 is that the battery unit 1 comprises a heat dissipation plate 101, a fixed frame 102, a battery cell 103 and a buffer pad 104, wherein a positioning protrusion 105 and a guide groove 106 are arranged on the side wall of the fixed frame 102, and the positioning protrusion of one battery unit 1 is inserted into the guide groove of the adjacent battery unit 1, so that the battery units 1 are stacked and assembled conveniently; a notch 107 is arranged on the heat dissipation plate 101 at a position corresponding to the guide groove 106 so as to ensure that the positioning protrusion 105 can penetrate through the heat dissipation plate 101 and be inserted into the guide groove 106; grooves 108 and 109 are provided at corresponding positions on the heat radiation plate 101 and the fixing frame 102, respectively, for accommodating the belt member 6 to prevent displacement thereof during use; the fixed frame 102 is arranged into a rectangular frame structure so as to ensure the thermal contact between the surface of the battery cell 103 and the heat dissipation plate 101; the upper end of the fixed frame 102 is provided with two square notches 113 which are symmetrically arranged, and the positive electrode lug 112 and the negative electrode lug 111 extend out of the upper end of the fixed frame 102 from the square notches 113; two sides of the upper end surface of the fixed frame 102 are provided with round holes 110 for installing the pole column assemblies 2, two battery cells 103 in the battery unit 1 can be arranged with negative pole lugs 111 facing the X side or can be arranged with negative pole lugs facing the X direction, two battery units 1 formed by the two battery cells are configured according to different numbers, and battery modules in different serial-parallel connection modes can be formed.
As shown in fig. 4, the pole assembly 2 has a pole support 201, a negative pole 202 and a positive pole 203, the positive pole 203 and the negative pole 202 are U-shaped sheet metal plates made of the same metal material, and the negative pole 202 and the positive pole 203 are fastened to fixing slots 205, 210 on the pole support 201 by retaining tabs 211 on the negative pole 202 and the positive pole 203, so as to fix the negative pole 202 and the positive pole 203 on a fixing beam 206 of the pole support 201. The pole support 201 is provided with a negative pole mark 207 and a positive pole mark 208 for identifying the pole type, so that the battery units 1 are stacked in a designed serial-parallel connection mode and the bus bars are mounted at the correct positions.
When the electrode assembly 2 is mounted, the positive electrode 203 is interposed between the two positive electrode tabs 112 and welded to the positive electrode tabs 112, and the negative electrode 202 is interposed between the two negative electrode tabs 111 and welded to the negative electrode tabs 111. The positive electrode post 203 and the negative electrode post 202 are made of copper and nickel plating of the same metal material, so that the bus bar can be made of a single metal material and can be firmly welded with the electrode posts. The lower part of the pole support 201 is provided with an umbrella-shaped bulge 204, and the umbrella-shaped bulge 204 is inserted into the round hole 110 on the fixed frame 102, so that the pole assembly 2 is mounted on the fixed frame 102. The lower part of the post support 201 has V-shaped protrusions 209, and when the post assembly 2 is mounted on the fixing frame 102, the V-shaped protrusions 209 separate the two positive electrode tabs 112 on both sides of the positive electrode post 203 and the two negative electrode tabs 111 on both sides of the negative electrode post 202.
As shown in fig. 5, when the battery unit 1 is electrically connected, two positive electrode lugs 112 and negative electrode lugs 11 of two electric cores 103 in the fixed frame 102 are respectively configured at two sides of a corresponding positive electrode post 203 and a corresponding negative electrode post 202, are parallel to the side surfaces of the positive electrode post 203 and the negative electrode post 202, keep a flat and vertical initial state, and are welded together through laser beams, so that the surface contact and the electrical connection of the lugs and the lugs are realized, wherein the positive electrode lugs 112 are welded with the positive electrode post 203, and the negative electrode lugs 111 are welded with the negative electrode post 202. The bus bars are arranged on the upper surfaces of eight poles (only three of which are shown in fig. 5), and the area where the bus bars overlap the poles is melted using a laser beam to achieve surface contact and electrical connection of the bus bars and the poles. The positive electrode bus bar 5 is welded with four positive electrode posts 203 for outputting electric energy of the battery module, the negative electrode bus bar 3 is welded with four negative electrode posts 202 for outputting electric energy of the battery module, and the serial bus bar 4 is welded with four positive electrode posts 203 and four negative electrode posts 202 to realize parallel connection and serial connection of electric cores in the module. In other embodiments, the buss bars may be electrically connected with a different number of poles to form different series-parallel forms of battery modules.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (7)
1. The utility model provides a soft packet of lithium ion battery module, has a plurality of range upon range of battery unit of arranging, corresponds to establish front end plate, the back end plate at battery unit both ends and tie up battery unit and front end plate, back end plate band member together, characterized by: the battery unit is provided with a fixed frame and a busbar positioned above the fixed frame, at least two cells which are arranged at intervals are arranged in the fixed frame, positive electrode lugs and negative electrode lugs which are symmetrically arranged on the vertical center line of the cells and extend out of notches at the upper end of the fixed frame are arranged at the upper end of the cells, and the positive electrode lugs and the negative electrode lugs are sheet metal plates;
The fixing frame is clamped with a pole assembly, the pole assembly comprises a pole support piece, and a positive pole and a negative pole which are arranged on the pole support piece at intervals, and the positive pole and the negative pole are U-shaped sheet metal plates made of the same metal material;
the busbar is of a plate-shaped structure and comprises a serial busbar used for connecting adjacent positive poles and negative poles in series, a negative busbar used for connecting the negative poles in parallel to form a module negative terminal and a positive busbar used for connecting the positive poles in parallel to form a module positive terminal;
a separation plate for electrically separating the bus bars is arranged between the bus bars and is fixed on the pole column assembly through a buckle;
The side wall of the fixed frame is provided with a guide groove and a positioning protrusion, and the guide groove and the positioning protrusion between adjacent fixed frames are matched to realize the positioning of the laminated battery units;
The positive pole and the negative pole are provided with inwards tilted retaining tongues, the fixed cross beam of the pole support piece is provided with square grooves, and the retaining tongues are clamped into the square grooves to realize the clamping connection of the positive pole and the negative pole with the pole support piece.
2. The soft pack lithium ion battery module of claim 1, wherein: the fixing frame is buckled with a heat dissipation plate in a bonding mode, and a notch for ensuring normal assembly of the positioning protrusion and the guide groove is arranged at the position, corresponding to the guide groove, on the heat dissipation plate.
3. The soft pack lithium ion battery module of claim 2, wherein: the side surfaces of the fixed frame and the radiating plate are respectively provided with a groove for accommodating the belt element.
4. The soft pack lithium ion battery module of claim 1, wherein: and a buffer cushion for absorbing impact and preventing the battery from swelling is arranged between the battery cores.
5. The soft pack lithium ion battery module of claim 1, wherein: the positive pole and the negative pole are plated with nickel by copper.
6. The soft pack lithium ion battery module of claim 1, wherein: the pole support piece is provided with umbrella-shaped bulges which are inserted into the fixing round holes on the fixing frame and then are opened to fix the pole assembly on the fixing frame.
7. A method of connecting the battery module of claim 1, comprising the steps of:
a. Two or more electric cores are arranged in a fixed frame which is buckled with a radiating plate in advance, a buffer pad is arranged between the electric cores, the radiating plate and the fixed frame are fixed by adopting glue bonding, and the electric cores and the buffer pad are fixed by adopting glue bonding;
b. The pole assembly is arranged on the fixed frame, positive pole lugs on adjacent electric cores are correspondingly positioned at two sides of the positive pole, negative pole lugs on adjacent electric cores are correspondingly positioned at two sides of the negative pole, the positive pole lugs are parallel to the side surfaces of the positive pole, and the negative pole lugs are parallel to the side surfaces of the negative pole;
c. directing laser beams to the positive electrode lug and the negative electrode lug which are correspondingly and parallelly attached to the positive electrode post and the negative electrode post, melting the positive electrode lug and the negative electrode lug by using the laser beams, forming metallurgical bonding between the positive electrode lug and the side surface of the positive electrode post, and forming metallurgical bonding between the negative electrode lug and the side surface of the negative electrode post;
d. Stacking and mounting the battery cells with the front and rear end plates, tightening the battery cells with the strap members, and mounting the buss bars on the pole assemblies;
e. and directing the laser beam to the busbar which is attached to the top surface of the pole in parallel, and melting the area of the busbar, which is overlapped with the positive pole and the negative pole by using the laser beam to form metallurgical bonding between the busbar and the top surfaces of the positive pole and the negative pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810408111.4A CN108448041B (en) | 2018-05-02 | 2018-05-02 | Soft package lithium ion battery module and connection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810408111.4A CN108448041B (en) | 2018-05-02 | 2018-05-02 | Soft package lithium ion battery module and connection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108448041A CN108448041A (en) | 2018-08-24 |
| CN108448041B true CN108448041B (en) | 2024-08-20 |
Family
ID=63202001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810408111.4A Active CN108448041B (en) | 2018-05-02 | 2018-05-02 | Soft package lithium ion battery module and connection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108448041B (en) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102395228B1 (en) | 2018-10-10 | 2022-05-04 | 주식회사 엘지에너지솔루션 | Mounting method of busbar frame |
| CN109742304A (en) * | 2018-12-29 | 2019-05-10 | 江苏卡耐新能源有限公司 | A kind of power battery module and electric vehicle |
| KR102352296B1 (en) * | 2019-01-10 | 2022-01-14 | 주식회사 엘지에너지솔루션 | Battery Module Having Inner Plate |
| CN109888159A (en) * | 2019-02-28 | 2019-06-14 | 力神动力电池系统有限公司 | A power battery soft pack module |
| CN110085787B (en) * | 2019-05-29 | 2024-12-03 | 淮安骏盛新能源科技有限公司 | A soft package module structure |
| CN110190226A (en) * | 2019-06-03 | 2019-08-30 | 上海碳源汇谷新材料科技有限公司 | A power lithium battery module with splicing structure |
| CN110718666A (en) * | 2019-10-28 | 2020-01-21 | 安徽超稳动力节能科技有限公司 | Modular battery pack |
| CN120149753A (en) * | 2019-11-19 | 2025-06-13 | 宁德时代新能源科技股份有限公司 | Soft package battery module, battery pack, and device using soft package battery module as power supply |
| CN113193295A (en) * | 2020-01-14 | 2021-07-30 | 北京海博思创科技股份有限公司 | Square battery module |
| CN113764787B (en) * | 2020-05-18 | 2022-12-09 | 比亚迪股份有限公司 | Electricity core subassembly, battery package and car |
| CN113764791B (en) * | 2020-05-18 | 2023-04-07 | 比亚迪股份有限公司 | Electricity core subassembly, battery package and car |
| CN113764786B (en) * | 2020-05-18 | 2022-10-18 | 比亚迪股份有限公司 | Battery, battery pack and automobile |
| CN113764788B (en) * | 2020-05-18 | 2023-06-13 | 比亚迪股份有限公司 | Battery cell assembly, battery pack and automobile |
| KR20220003247A (en) * | 2020-07-01 | 2022-01-10 | 주식회사 엘지에너지솔루션 | Battery pack and device including the same |
| CN114079111B (en) * | 2020-08-11 | 2023-11-14 | 好风光储能技术(成都)有限公司 | Large vertical energy storage battery and energy storage container |
| CN111834579A (en) * | 2020-08-22 | 2020-10-27 | 江苏塔菲尔动力系统有限公司 | Battery press-mounting frame, battery pack structure, battery pack and battery pack assembling method |
| CN112563651B (en) * | 2020-12-25 | 2025-05-09 | 宁德新能源科技有限公司 | Connection structure of tab and bus bar, electrochemical device and electric device |
| CN113097627B (en) * | 2021-03-31 | 2023-05-19 | 珠海冠宇动力电池有限公司 | Battery pack |
| CN115347334A (en) * | 2021-05-14 | 2022-11-15 | 中创新航科技股份有限公司 | Battery, battery module and battery pack |
| CN113258221B (en) * | 2021-06-23 | 2021-09-17 | 武汉理工大学 | Cold connection method for hard-shell lithium battery pole column and connecting sheet |
| CN113659187B (en) * | 2021-07-22 | 2023-04-07 | 风帆有限责任公司 | Storage battery and assembly process |
| CN216288853U (en) * | 2021-10-29 | 2022-04-12 | 比亚迪股份有限公司 | Utmost point ear is drawn forth subassembly, utmost point core subassembly and battery |
| EP4475304A1 (en) * | 2022-12-02 | 2024-12-11 | LG Energy Solution, Ltd. | Battery pack |
| CN115986326A (en) * | 2022-12-26 | 2023-04-18 | 合肥国轩高科动力能源有限公司 | Low-voltage battery device of lithium ion battery |
| WO2024244091A1 (en) * | 2023-05-29 | 2024-12-05 | 惠州亿纬锂能股份有限公司 | Battery box |
| WO2024244074A1 (en) * | 2023-05-31 | 2024-12-05 | 惠州亿纬锂能股份有限公司 | Busbar assembly and battery pack |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208256788U (en) * | 2018-05-02 | 2018-12-18 | 中航锂电技术研究院有限公司 | A kind of soft bag lithium ionic cell module |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1055796A (en) * | 1996-08-09 | 1998-02-24 | Furukawa Battery Co Ltd:The | Storage battery |
| CN102263284B (en) * | 2011-06-30 | 2013-07-17 | 奇瑞汽车股份有限公司 | Cell structure |
| CN204614889U (en) * | 2015-06-04 | 2015-09-02 | 遂宁宏成电源科技有限公司 | The full lug winding battery in two ends |
| CN105070874B (en) * | 2015-07-23 | 2017-11-21 | 中航锂电（洛阳）有限公司 | A kind of soft bag lithium ionic cell module connection structure |
| CN205194790U (en) * | 2015-12-01 | 2016-04-27 | 浙江超威创元实业有限公司 | Power battery module and electric motor car convenient to automatic equipment |
| CN105514498B (en) * | 2015-12-01 | 2019-04-26 | 浙江超威创元实业有限公司 | A kind of power battery module and electric vehicle convenient for assembling automatically |
| CN106025162B (en) * | 2016-06-30 | 2019-11-08 | 上海捷新动力电池系统有限公司 | A kind of soft package battery module connection structure |
| CN106803608A (en) * | 2016-09-29 | 2017-06-06 | 蔚来汽车有限公司 | Battery module and new energy automobile |
| CN106356586A (en) * | 2016-11-25 | 2017-01-25 | 江西迪比科股份有限公司 | Heat dissipation and heating integrated power battery module |
| CN106935782B (en) * | 2017-02-27 | 2020-02-21 | 多氟多新能源科技有限公司 | Battery unit and battery module comprising same |
-
2018
- 2018-05-02 CN CN201810408111.4A patent/CN108448041B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208256788U (en) * | 2018-05-02 | 2018-12-18 | 中航锂电技术研究院有限公司 | A kind of soft bag lithium ionic cell module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108448041A (en) | 2018-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108448041B (en) | Soft package lithium ion battery module and connection method | |
| KR101749189B1 (en) | Battery module having middle support | |
| US9768427B2 (en) | Battery module assembly of improved reliability and battery pack employed with the same | |
| JP7048838B2 (en) | Battery module and battery pack with busbar | |
| EP2887427B1 (en) | Battery module with bus-bar holder | |
| CN208256788U (en) | A kind of soft bag lithium ionic cell module | |
| KR20180129115A (en) | Cylindrical cell connection separated bus bar and battery module using the same and manufacturing method | |
| CN212136551U (en) | Battery module | |
| KR20190063814A (en) | Battery Module Having Busbar Assembly | |
| EP2852991A1 (en) | Bimetal buss bar assembly | |
| WO2013132978A1 (en) | Assembled battery | |
| CN216750213U (en) | Battery pack unit, battery pack and mobile energy storage power supply | |
| CA3232316A1 (en) | Battery cell unit, battery, and vehicle | |
| US20250192376A1 (en) | Battery Module and Manufacturing Method Thereof | |
| WO2011033727A1 (en) | Assembled battery, assembled battery aggregate, and battery module | |
| CN111640896A (en) | Battery module frame and battery module | |
| WO2019056269A1 (en) | Fixing frame, battery unit, and battery module | |
| KR20190001424A (en) | Battery module | |
| CN211828998U (en) | Bus bar for battery module and battery assembly thereof | |
| CN218472176U (en) | Battery modules and battery packs | |
| CN219610640U (en) | Battery module | |
| CN214477778U (en) | Battery module | |
| EP4002575B1 (en) | Device for soft-packaged electric core connection and signal acquisition | |
| CN211320202U (en) | Soft package battery module | |
| US10170812B2 (en) | Assembly module comprising electrochemical cells received by lugs and connecting clips |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Applicant after: AVIC Innovation Technology Research Institute (Jiangsu) Co.,Ltd. Applicant after: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. Address before: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Applicant before: Kaibo Energy Technology Co.,Ltd. Applicant before: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. Address after: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Applicant after: Kaibo Energy Technology Co.,Ltd. Applicant after: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. Address before: No.88 Jintan Avenue, Jintan District, Changzhou City, Jiangsu Province Applicant before: CHINA AVIATION LITHIUM BATTERY RESEARCH INSTITUTE Co.,Ltd. Applicant before: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |