CN107425173A - A kind of soft pack cell module welding structure - Google Patents
A kind of soft pack cell module welding structure Download PDFInfo
- Publication number
- CN107425173A CN107425173A CN201710695067.5A CN201710695067A CN107425173A CN 107425173 A CN107425173 A CN 107425173A CN 201710695067 A CN201710695067 A CN 201710695067A CN 107425173 A CN107425173 A CN 107425173A
- Authority
- CN
- China
- Prior art keywords
- piece
- confluxes
- lug
- cell module
- soft pack
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 35
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 230000004927 fusion Effects 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 101100460844 Mus musculus Nr2f6 gene Proteins 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- 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
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
-
- 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
Abstract
The invention discloses a kind of soft pack cell module welding structure, including conflux piece and lug, the lug are inserted into the centre of the two neighboring piece that confluxes, connected between the lug and the piece that confluxes by welding manner.Present invention connection is reliable, and welding quality can effectively ensure that and monitor, and yields is high, and simple to operate in actual production process, it is easy to accomplish automated production.
Description
Technical field
The present invention relates to technical field of lithium batteries, specifically a kind of soft pack cell module welding structure.
Background technology
New-energy automobile is the center and direction of automobile industry future development.Lithium-ion-power cell is the shape with battery bag
Formula is widely deployed New energy electric in-car, and power is provided for new-energy automobile.Soft pack cell has small volume, weight
Gently, a variety of advantages such as, safe, flexible design higher than energy, increasing electric car manufacturer start to use soft pack cell.
Due to the general monomer finite capacity of soft pack cell, it is necessary to will be used after multiple battery core connection in series-parallel, to reach electric car
Job requirement.To realize the connection in series-parallel of battery core, carried out when some soft pack cell modules connect using conflux piece and lug of waveform
Series parallel structure（As described in Figure 1）, lug needs to insert one by one in the groove of bus-bar, then will be confluxed by the way of welding
Row is attached with lug；The shortcomings that existing has：1）Need for lug to be inserted into waveform remittance one by one in actual production process
In the groove for flowing row, operation difficulty is big；2）It is very high to the coherence request of lug length, welding quality be difficult to be effectively ensured and
The problem of, easily there are the problems of welded quality such as rosin joint, burn-through in monitoring, and yields is low, and connection internal resistance is big；Also some Soft Rolls electricity
Core group is using lug and bus-bar bolt connection（As described in Figure 2）, lug and joint are carried out by the way of welding first
Joint and bus-bar, are then attached by connection by bolt.The shortcomings that existing has：1）Size increases on module length direction
Add, and the introducing of joint and bolt adds the weight of module, have impact on the energy per volume density and unit mass of module
Energy density；2）Due to that can produce pitch in vehicle travel process, bolt connection easily loosens, and causes module to fail.
The above analysis, to solve the technical disadvantages of existing structure scheme.It can solve the problem that therefore, it is necessary to provide one kind
The soft pack cell module welding structure of above mentioned problem.
The content of the invention
It is an object of the invention to provide a kind of soft pack cell module welding structure, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the present invention provides following technical scheme：
A kind of soft pack cell module welding structure, including conflux piece and lug, the lug are inserted into the two neighboring piece that confluxes
Centre, connected between the lug and the piece that confluxes by welding manner, the lug top and the piece flush that confluxes, the remittance
Flow surface offers screwed hole, and screw thread hole number is more than 1, and is uniformly distributed in and confluxes on piece, and the thickness for the piece that confluxes is not
Less than 1mm.
As the further scheme of the present invention：The material of the piece that confluxes is that copper, aluminium, nickel, aluminium alloy, copper alloy or nickel close
Gold.
As the further scheme of the present invention：The material of the piece that confluxes is copper aluminium, cupro-nickel or aluminium nickel composite material.
As the further scheme of the present invention：The lug rigging error is -1mm~1mm.
As the further scheme of the present invention：The fusion length that adjacent two panels is confluxed between piece is not less than the 1/ of lug length
3。
As the further scheme of the present invention：Fusion penetration between the lug and the piece that confluxes is not less than confluxing the 1/ of piece thickness
2。
As the further scheme of the present invention：The piece thread surface hole of confluxing is used for the connection of signal acquisition line, and
The bad bus-bar connection of welding quality.
Compared with prior art, the beneficial effects of the invention are as follows：Welding structure connection is reliable, and welding quality can be effective
Ensure and monitor, yields is high, and simple to operate in actual production process, it is easy to accomplish automated production.
Brief description of the drawings
Fig. 1 is that conflux piece and the lug of waveform of the first prior art carries out series parallel structure schematic diagram.
Fig. 2 is the lug and the bolted structural representation of bus-bar of second of prior art.
Fig. 3 is the structural representation of the present invention.
Fig. 4 is the overlooking the structure diagram of piece of confluxing in the present invention.
Fig. 5 is the main structure diagram of piece of confluxing in the present invention.
Fig. 6 is the vertical view welding structure schematic diagram of the present invention.
Fig. 7 is the main view welding structure schematic diagram of the present invention.
In figure：1- confluxes piece, 2- lugs, 101- screwed holes.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Refer to Fig. 3~7, in the embodiment of the present invention, a kind of soft pack cell module welding structure, including conflux piece 1 and pole
Ear 2, the lug 2 are inserted into the centre of the two neighboring piece 1 that confluxes, connected between the lug 2 and the piece 1 that confluxes by welding manner
Connect.
In the present embodiment, the material of the piece 1 that confluxes is copper, aluminium, nickel, aluminium alloy, copper alloy or nickel alloy, to realize electricity
Core is connected, the piece 1 that confluxes or copper aluminium, cupro-nickel or aluminium nickel composite material.
In the present embodiment, the top of lug 2 and the flush of piece 1 that confluxes, it is allowed to which the assembling of lug 2 has error, error
Between -1mm~1mm, there is larger assembling suitability.
In the present embodiment, as described in Figure 4 and 5, the surface of piece 1 of confluxing offers screwed hole 101, the quantity of screwed hole 101
More than 1, and it is uniformly distributed in and confluxes on piece 1；To ensure effective connection of lug 2 and the piece 1 that confluxes, the piece 1 that confluxes has certain
Thickness, thickness is not less than 1mm.
In the present embodiment, as described in figs. 6 and 7, to ensure effective area of passage, weld seam has certain length and fusion penetration；
Wherein, fusion length L is not less than the 1/3 of the length of lug 2, and fusion penetration D is not less than confluxing the 1/2 of the thickness of piece 1.
In the present embodiment, the thread surface hole 101 of piece 1 of confluxing can be used for the connection of signal acquisition line, it can also be used to weld
The connection of the bad bus-bar of quality is connect, avoids module from scrapping.
The soft pack cell module welding structure, compared with waveform bus-bar, using the welding structure, lug 2 is with confluxing
Piece 1 is installed one by one, it is not necessary to lug 2 inserted in bus-bar groove, it is simple to operate in actual production process；Pole before butt welding
The required precision of ear fitted position reduces, it is allowed to which the installation of lug 2 has certain error；Compared with bolt fastening structure, using this
Welding structure, the energy per mass density and energy per volume density of module can be improved, while connected reliably, be not in
Loosening etc. influences the problem of product reliability.
Welding structure connection is reliable, and welding quality can effectively ensure that and monitor, and yields is high, and actual production
It is simple to operate in journey, it is easy to accomplish automated production.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
The above is only the preferred embodiment of the present invention, it is noted that for those skilled in the art, not
On the premise of departing from present inventive concept, several modifications and improvements can also be made, these should also be considered as the protection model of the present invention
Enclose, these effects and practical applicability for implementing all without the influence present invention.
Claims (7)
1. a kind of soft pack cell module welding structure, including the piece that confluxes（1）And lug（2）, it is characterised in that the lug（2）
It is inserted into the two neighboring piece that confluxes（1）Centre, the lug（2）With the piece that confluxes（1）Between connected by welding manner, it is described
Lug（2）Top and the piece that confluxes（1）Flush, the piece that confluxes（1）Surface offers screwed hole（101）, screwed hole（101）
Quantity is more than 1, and is uniformly distributed in the piece that confluxes（1）On, and the piece that confluxes（1）Thickness be not less than 1mm.
2. soft pack cell module welding structure according to claim 1, it is characterised in that the piece that confluxes（1）Material
For copper, aluminium, nickel, aluminium alloy, copper alloy or nickel alloy.
3. soft pack cell module welding structure according to claim 1 or 2, it is characterised in that the piece that confluxes（1）Material
Matter is copper aluminium, cupro-nickel or aluminium nickel composite material.
4. soft pack cell module welding structure according to claim 1, it is characterised in that the lug（2）Rigging error
For -1mm~1mm.
5. soft pack cell module welding structure according to claim 1, it is characterised in that adjacent two panels is confluxed piece（1）It
Between fusion length be not less than lug（2）The 1/3 of length.
6. soft pack cell module welding structure according to claim 1, it is characterised in that the lug（2）With the piece that confluxes
（1）Between fusion penetration not less than confluxing piece（1）The 1/2 of thickness.
7. soft pack cell module welding structure according to claim 1, it is characterised in that the piece that confluxes（1）Surface spiral shell
Pit（101）For the connection of signal acquisition line, and the bus-bar connection that welding quality is bad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710695067.5A CN107425173A (en) | 2017-08-15 | 2017-08-15 | A kind of soft pack cell module welding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710695067.5A CN107425173A (en) | 2017-08-15 | 2017-08-15 | A kind of soft pack cell module welding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107425173A true CN107425173A (en) | 2017-12-01 |
Family
ID=60438068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710695067.5A Pending CN107425173A (en) | 2017-08-15 | 2017-08-15 | A kind of soft pack cell module welding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107425173A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111180633A (en) * | 2020-02-25 | 2020-05-19 | 四川国创成电池材料有限公司 | Laminate polymer battery module and consumer |
| CN111200086A (en) * | 2020-02-25 | 2020-05-26 | 四川国创成电池材料有限公司 | Modularization laminate polymer battery group and consumer |
| CN111244354A (en) * | 2020-02-25 | 2020-06-05 | 四川国创成电池材料有限公司 | Soft packet of lithium cell and consumer |
| CN111293270A (en) * | 2020-02-25 | 2020-06-16 | 四川国创成电池材料有限公司 | Battery core tab connection structure, soft-packaged battery, electric equipment, electric vehicle and power station |
| CN111864173A (en) * | 2020-07-16 | 2020-10-30 | 深圳市拓湃新能源科技有限公司 | Battery pack welding process |
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| CN105070874A (en) * | 2015-07-23 | 2015-11-18 | 中航锂电（洛阳）有限公司 | Connection structure of flexible-package lithium ion battery module |
| CN105514498A (en) * | 2015-12-01 | 2016-04-20 | 浙江超威创元实业有限公司 | Convenient-to-assemble automatically power battery module and electric motor car |
| CN105895847A (en) * | 2015-09-29 | 2016-08-24 | 北京长城华冠汽车科技股份有限公司 | Tab connection device, power battery module and automobile |
| CN105914335A (en) * | 2016-04-12 | 2016-08-31 | 安徽欧鹏巴赫新能源科技有限公司 | Flexible-packaging power lithium ion battery module busbar |
| CN106025162A (en) * | 2016-06-30 | 2016-10-12 | 上海捷新动力电池系统有限公司 | Module connecting structure for soft-package battery |
| CN106935782A (en) * | 2017-02-27 | 2017-07-07 | 多氟多（焦作）新能源科技有限公司 | A kind of battery unit and the battery module including the battery unit |
-
2017
- 2017-08-15 CN CN201710695067.5A patent/CN107425173A/en active Pending
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| CN105070874A (en) * | 2015-07-23 | 2015-11-18 | 中航锂电（洛阳）有限公司 | Connection structure of flexible-package lithium ion battery module |
| CN105895847A (en) * | 2015-09-29 | 2016-08-24 | 北京长城华冠汽车科技股份有限公司 | Tab connection device, power battery module and automobile |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111180633A (en) * | 2020-02-25 | 2020-05-19 | 四川国创成电池材料有限公司 | Laminate polymer battery module and consumer |
| CN111200086A (en) * | 2020-02-25 | 2020-05-26 | 四川国创成电池材料有限公司 | Modularization laminate polymer battery group and consumer |
| CN111244354A (en) * | 2020-02-25 | 2020-06-05 | 四川国创成电池材料有限公司 | Soft packet of lithium cell and consumer |
| CN111293270A (en) * | 2020-02-25 | 2020-06-16 | 四川国创成电池材料有限公司 | Battery core tab connection structure, soft-packaged battery, electric equipment, electric vehicle and power station |
| CN111864173A (en) * | 2020-07-16 | 2020-10-30 | 深圳市拓湃新能源科技有限公司 | Battery pack welding process |
| CN111864173B (en) * | 2020-07-16 | 2023-05-12 | 深圳市拓湃新能源科技有限公司 | Battery pack welding process |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20240112 |