CN206639850U - Power battery module both positive and negative polarity attachment structure - Google Patents
Power battery module both positive and negative polarity attachment structure Download PDFInfo
- Publication number
- CN206639850U CN206639850U CN201720246009.XU CN201720246009U CN206639850U CN 206639850 U CN206639850 U CN 206639850U CN 201720246009 U CN201720246009 U CN 201720246009U CN 206639850 U CN206639850 U CN 206639850U
- Authority
- CN
- China
- Prior art keywords
- connecting portion
- connection sheet
- positive
- power battery
- battery module
- 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
Classifications
-
- 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 utility model discloses a kind of power battery module both positive and negative polarity attachment structure, including the first connection sheet and the second connection sheet being welded to connect, the material of first connection sheet is copper, and the material of the second connection sheet is aluminium, and the second connection sheet is provided with the raised and projection as voltage and temperature sampling point.Power battery module both positive and negative polarity attachment structure of the present utility model, technical requirements when positive and negative electrode connects when battery modules are made in cell can preferably be adapted to, using copper sheet and aluminium flake Overlap design, using ultrasonic welding technique by copper sheet and aluminium flake welding fabrication, the reliability that positive and negative electrode connects between cell in power battery module is improved.
Description
Technical field
The utility model belongs to lithium ion battery interconnection technique field, specifically, the utility model is related to a kind of power
Battery modules both positive and negative polarity attachment structure.
Background technology
As national policy is to the huge support of new-energy automobile industry, new-energy automobile develops to obtain unprecedented hair
Exhibition.State-level from purchase subdization, reduction or exemption of tax, research and development support, production access, format innovation, infrastructure and standard gauge
Model etc. is put into effect a series of major policy measures and implemented comprehensively；Promote and establish energy-conservation and new-energy automobile marketization hair
Permanent mechanism is opened up, system promotes new-energy automobile development.New-energy automobile in 2016 produces 51.7 ten thousand, sells 50.7 ten thousand,
Increase by 51.7% and 53% respectively than same period last year；Exceed as the annual requirement of new-energy automobile core drive battery bag 2016
600000 sets, the electrokinetic cell bag market demand is huge；As country and industry are more and more stricter to battery bag technical requirements, each battery
With battery bag factory all in the requirement of continuous lift technique, meet or battery bag technical requirements, battery bag are integrated more than country
Middle welding battery interconnection technique is also constantly being weeded out the old and bring forth the new.
It is that module is first made by series-parallel mode by cell that battery bag is integrated, then passes through the system integration by module
For battery bag；When module is made by string and mode in cell, it need to be connected in parallel or series between cell；Mesh
Before, power battery module is made connection and is substantially the connection realized using screw bolt and nut between cell, such a connection
The shortcomings that method is present has：Shortcoming one is that battery pole ear contact resistance is big when being connected by bolts and nuts, during battery charging and discharging
Connection position heating amount is big, influences battery and security；Another shortcoming is that vehicle can produce shake in the process of moving
It is dynamic to cause to loosen between bolts and nuts, Joint failure can be produced, battery bag life-span and safety is influenceed, causes vehicle to use
When break down, bring personal safety hidden danger；The third shortcoming is this attachment structure intricate operation when battery modules make,
Time-consuming, and cost is high.
Utility model content
The utility model is intended at least solve one of technical problem present in prior art.Therefore, the utility model carries
For a kind of power battery module both positive and negative polarity attachment structure, it is therefore an objective to improve positive and negative between cell in power battery module
Pole connection reliability.
To achieve these goals, the technical scheme that the utility model is taken is：Power battery module both positive and negative polarity connection knot
Structure, including the first connection sheet and the second connection sheet being welded to connect, the material of the first connection sheet are copper, the material of the second connection sheet
For aluminium, the second connection sheet is provided with the raised and projection as voltage and temperature sampling point.
The projection sets two and two projections are stretched out towards the same side of second connection sheet.
First connection sheet includes the first connecting portion and second connecting portion being connected, and the thickness of second connecting portion is less than
The thickness of first connecting portion.
Second connection sheet includes the 3rd connecting portion and the 4th connecting portion being connected, and the thickness of the 4th connecting portion is less than
The thickness of 3rd connecting portion, the projection are arranged on the 4th connecting portion.
The thickness of the first connecting portion is identical with the thickness of the 3rd connecting portion, the second connecting portion and described the
Four connecting portions are bonded and to be welded to connect.
Power battery module both positive and negative polarity attachment structure of the present utility model, it can preferably adapt to cell and battery is made
Technical requirements when positive and negative electrode connects during module, using copper sheet and aluminium flake Overlap design, using ultrasonic welding technique by copper sheet and
Aluminium flake welding fabrication, improve the reliability that positive and negative electrode connects between cell in power battery module.
Brief description of the drawings
This specification includes the following drawings, and shown content is respectively：
Fig. 1 is the structural representation of the utility model power battery module both positive and negative polarity attachment structure；
Fig. 2 is the schematic cross-section of the utility model power battery module both positive and negative polarity attachment structure；
Fig. 3 is the front view of the utility model power battery module both positive and negative polarity attachment structure；
In figure mark for：1st, it is raised；2nd, the first connection sheet；21st, first connecting portion；22nd, second connecting portion；3rd, the second connection
Piece；31st, the 3rd connecting portion；32nd, the 4th connecting portion；4th, groove；5th, identification point is gathered；6th, resistance test point.
Embodiment
Below against accompanying drawing, by the description to embodiment, specific embodiment of the present utility model is made further detailed
Thin explanation, it is therefore an objective to help those skilled in the art have to design of the present utility model, technical scheme it is more complete, accurate and
Deep understanding, and contribute to its implementation.
As shown in Figure 1 to Figure 3, the utility model provides a kind of power battery module both positive and negative polarity attachment structure, including weldering
The first connection sheet 21 and the second connection sheet 3 connect in succession, the material of the first connection sheet 21 is copper, and the material of the second connection sheet 3 is
Aluminium, the second connection sheet 3 is provided with projection 1 and the projection 1 is used as voltage and temperature sampling point.
Specifically, material used in the lug of cell is generally：Positive pole uses aluminium (Al) material, and negative pole uses
Copper nickel plating (Ni-Cu) material；Battery bag is that cell carries out the system integration by series-parallel system, and cell is being gone here and there
Need both positive and negative polarity being attached when in parallel, because positive and negative pole material is different, it is impossible to honest to tap into row laser welding；To realize just
Negative pole laser welding, attachment structure of the present utility model need to be used, to meet the technical requirements of positive and negative lug while welding.First
Connection sheet 21 is connected for the negative lug with cell, and the second connection sheet 3 is for the positive pole ear with cell
Connection.
As shown in Figure 1 to Figure 3, the first connection sheet 21 and the second connection sheet 3 are flat sheet-like structure, the first connection sheet 21
Including the first connecting portion 21 and second connecting portion 22 being connected, the second connection sheet 3 includes the He of the 3rd connecting portion 31 being connected
4th connecting portion 32, the thickness of second connecting portion 22 are less than the thickness of first connecting portion 21, and the thickness of the 4th connecting portion 32 is less than
The thickness of 3rd connecting portion 31, the thickness of first connecting portion 21 is identical with the thickness of the 3rd connecting portion 31, second connecting portion 22 with
4th connecting portion 32 is bonded and to be located at second respectively by ultrasonic bonding connection, the connecting portion 31 of first connecting portion 21 and the 3rd
The side of the connecting portion 32 of connecting portion 22 and the 4th.First connecting portion 21 is connected to form cross section with the end of second connecting portion 22
For the first connection sheet 21 of L-type, the 3rd connecting portion 31 is connected to form cross section as the of L-type with the end of the 4th connecting portion 32
Two connection sheets 3, the first connection sheet 21 and the Overlap design of the second connection sheet 3, the connecting portion 32 of second connecting portion 22 and the 4th fit
The gross thickness at place is identical with the thickness size of the connecting portion 31 of first connecting portion 21 and the 3rd, and the main part for forming attachment structure is
Thickness laminated structure of the same size.
As preferable, the surface of the first connection sheet 21 and the second connection sheet 3 has a nickel coating, and the thickness of nickel coating is not small
In 3um, coating adhesion meets the requirement such as 1 grade of GB T9286.
As shown in Figure 1 to Figure 3, projection 1 sets two, and two projections 1 are arranged on the 4th connecting portion 32, and two projections
1 stretches out towards the same side of the 4th connecting portion 32.In two projections 1, one of projection 1 is used to connect voltage sample wire harness,
Another projection 1 is used to connect temperature sampling wire harness.
As shown in Figure 1 to Figure 3, the both ends in the first connection sheet 21 and the length direction of the second connection sheet 3 set one respectively
Semicircular groove 4 and the groove 4 are open slot, and the groove 4 at the first connection sheet 21 and the both ends of the second connection sheet 3 aligns respectively to be set
Put.Groove 4 is set, and (CCD English full name is for CCD camera during as laser welding：Charge-coupled Device) carry out
Identify the collection identification point of positioning.
As shown in Figure 1 to Figure 3, resistance test point is set in the first connection sheet 21 and the second connection sheet 3.Second connection sheet 3
Edge one arc groove is set, form a R angle, (CCD English full name is for CCD camera during as laser welding：
Charge-coupled Device) the collection identification point of positioning is identified.
When using the power battery module both positive and negative polarity attachment structure of said structure, this attachment structure is pressed into battery modules system
It is required and puts in place, then first connection sheet 21 and second of the positive and negative lug of cell on request with attachment structure is connected
Contact pin 3 is pressed, and is then fed into laser welding station and is carried out laser welding.
The utility model is exemplarily described above in association with accompanying drawing.Obviously, the utility model implements not
Limited by aforesaid way.As long as employ the various unsubstantialities that methodology and technical scheme of the present utility model are carried out
Improvement；Or it is not improved, above-mentioned design of the present utility model and technical scheme are directly applied into other occasions, at this
Within the protection domain of utility model.
Claims (5)
1. power battery module both positive and negative polarity attachment structure, it is characterised in that：Connect including the first connection sheet being welded to connect and second
Contact pin, the material of the first connection sheet is copper, and the material of the second connection sheet is aluminium, and the second connection sheet is provided with the raised and projection and made
For voltage and temperature sampling point.
2. power battery module both positive and negative polarity attachment structure according to claim 1, it is characterised in that：The raised setting two
Individual and two projections are stretched out towards the same side of second connection sheet.
3. power battery module both positive and negative polarity attachment structure according to claim 2, it is characterised in that：First connection sheet
Including the first connecting portion and second connecting portion being connected, the thickness of second connecting portion is less than the thickness of first connecting portion.
4. power battery module both positive and negative polarity attachment structure according to claim 3, it is characterised in that：Second connection sheet
Including the 3rd connecting portion being connected and the 4th connecting portion, the thickness of the 4th connecting portion is less than the thickness of the 3rd connecting portion, described
Projection is arranged on the 4th connecting portion.
5. power battery module both positive and negative polarity attachment structure according to claim 4, it is characterised in that：The first connecting portion
Thickness it is identical with the thickness of the 3rd connecting portion, the second connecting portion is bonded with the 4th connecting portion and connected for welding
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720246009.XU CN206639850U (en) | 2017-03-14 | 2017-03-14 | Power battery module both positive and negative polarity attachment structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720246009.XU CN206639850U (en) | 2017-03-14 | 2017-03-14 | Power battery module both positive and negative polarity attachment structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206639850U true CN206639850U (en) | 2017-11-14 |
Family
ID=60249700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720246009.XU Active CN206639850U (en) | 2017-03-14 | 2017-03-14 | Power battery module both positive and negative polarity attachment structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206639850U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103408A (en) * | 2018-07-05 | 2018-12-28 | 湖北锂诺新能源科技有限公司 | Aluminium connection sheet in power battery module |
| CN111937184A (en) * | 2018-03-30 | 2020-11-13 | 三洋电机株式会社 | Battery module, vehicle having the same, and bus bar |
-
2017
- 2017-03-14 CN CN201720246009.XU patent/CN206639850U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111937184A (en) * | 2018-03-30 | 2020-11-13 | 三洋电机株式会社 | Battery module, vehicle having the same, and bus bar |
| CN109103408A (en) * | 2018-07-05 | 2018-12-28 | 湖北锂诺新能源科技有限公司 | Aluminium connection sheet in power battery module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206639850U (en) | Power battery module both positive and negative polarity attachment structure | |
| CN205944217U (en) | A busbar that is used for that cylinder type lithium cell group is electrically conductive to be connected | |
| CN206047395U (en) | Solar photovoltaic assembly | |
| CN203941235U (en) | A kind of power battery of pure electric automobile insulation resistance is at line detection circuit | |
| CN203536498U (en) | Connecting structure of battery modules | |
| CN106206855A (en) | A kind of busbar welding method | |
| CN102386365A (en) | Welding process of positive and negative current collectors and conducting polar lugs of battery or capacitor | |
| CN208226005U (en) | A kind of high-energy density soft-package battery modular structure | |
| CN205248287U (en) | No main grid battery pack | |
| CN105576050A (en) | Flexible solar cell module and preparation method thereof | |
| CN206628527U (en) | A kind of battery modules both positive and negative polarity connects pole piece | |
| CN207690894U (en) | A kind of direct-connected structure of battery core and its battery pack | |
| CN205911352U (en) | Soft packet of power lithium ion battery module busbar | |
| CN201464346U (en) | Detection tool for cohesive force of hydrosolvent pole piece of lithium-ion battery | |
| CN204230338U (en) | A kind of lug laser welding structure of lithium ion battery and the battery pack of formation thereof | |
| CN211743293U (en) | Firm degree of welding of lithium battery tab detects structure | |
| CN209344212U (en) | Bus structures for battery modules and the battery modules with it | |
| CN209087878U (en) | Imbrication battery strings, component and the device of PERC | |
| CN203406829U (en) | Installing structure for solar photovoltaic module and junction box | |
| CN206379420U (en) | Electrodes of lithium-ion batteries is coated with pole piece deviation correction warning device | |
| CN207068980U (en) | A kind of soft pack cell module welding structure | |
| CN205790212U (en) | A kind of polymer Li-ion battery | |
| CN206401326U (en) | Solar energy is without main gate line crystal-silicon battery slice | |
| CN205992568U (en) | Collector plate and electrokinetic cell | |
| CN206992125U (en) | A kind of laminated form board of solar energy photovoltaic panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |