CN205985165U - Connection structure of power battery electricity core subassembly - Google Patents
Connection structure of power battery electricity core subassembly Download PDFInfo
- Publication number
- CN205985165U CN205985165U CN201620631240.6U CN201620631240U CN205985165U CN 205985165 U CN205985165 U CN 205985165U CN 201620631240 U CN201620631240 U CN 201620631240U CN 205985165 U CN205985165 U CN 205985165U
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- Prior art keywords
- copper sheet
- pole piece
- power battery
- core
- attachment structure
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- 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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to a connection structure of power battery electricity core subassembly, including connecting copper sheet, electric core and a plurality of pole piece that is fixed in on the electric core, the recess that is equipped with the width on the pole piece and is connected copper sheet width looks adaptation, the degree of depth of this recess is the same with the thickness size of being connected the copper sheet, the pole piece passes through the connection copper sheet interconnect among the embedded Groove. The utility model discloses a recess of setting on the pole piece makes battery module electrode one side surfacing and can hold the loading lotus with to be connected the copper sheet fixed, has avoided electrode side unevenness, and the incompact problem of the module that leads to. All connection copper sheets weld behind the recess that imbeds on the pole piece again, even if the welding seam became invalid, connect the copper sheet and also can not break away from the danger of origin -location initiation short circuit. Simultaneously, it is unchangeable basically that connection copper sheet increase in thickness area reduces the material consumption total amount, nevertheless connects whole all participation of copper sheet and electrically conduct, and the internal resistance reduces on the contrary, and tear resistance also obtains improving.
Description
Technical field
This utility model is related to power battery pack battery core mounting technology field and in particular to a kind of electrical core of power battery assembly
Attachment structure.
Background technology
New energy sources for automobile technology quickly grows at present, and particularly lithium-ion-power cell is the electric automobile neck of energy-accumulating medium
Domain, the group technology of electrokinetic cell becomes a big technical bottleneck at present, and the erection welding problem of the wherein connection copper sheet of battery core becomes
Now project.
Power battery pack is typically made up of battery core connection in series-parallel, realizes connection in series-parallel by copper sheet between battery core.Copper sheet directly welds
Be connected on battery core electrode, battery core electrode have a pair of rivet, copper sheet is existed with rivet interferes, typically take be punched on copper sheet recessed
The mode in hole is evading.Which results in the integral surface out-of-flatness of battery modules electrode side, be difficult to this when designing modular cartridge
Individual surface carries out operative constraint.
Secondly connect using one-sided resistance weldering between copper sheet and battery core electrode, in order to guarantee firm welding, in welding
Before need manual grinding battery core electrode surface to smear solder(ing) paste, and the connection copper sheet using Bao Erkuan, copper sheet material is not using filling
Point, solder joint, junction easily tear.During welding can only manual welding, production automation degree is low, and the little internal resistance of solder joint area is big,
Processing quality is unstable, work under bad environment.
Utility model content
The purpose of this utility model is to provide a kind of attachment structure of electrical core of power battery assembly, makes electrode side overall
Surface is more smooth, reduces the internal resistance of copper sheet, improves the technique of battery component and the lear energy of junction.
For achieving the above object, this utility model employs technical scheme below：
A kind of attachment structure of electrical core of power battery assembly, including connecting copper sheet, battery core and multiple be fixed in battery core
Pole piece, described pole piece is provided with width and is connected the groove that copper sheet width is adapted, the depth of this groove and the thickness being connected copper sheet
Degree size is identical, and described pole piece is connected with each other by the connection copper sheet in embedded groove.
Described pole piece in battery core in matrix arrangement.
Described pole piece is fixedly connected with battery core by rivet.
Described battery core is provided with position limiting structure.
Described position limiting structure is made up of two projections being oppositely arranged, the distance between this projection and the width being connected copper sheet
Size matches.
Described connection copper sheet passes through welding with pole piece mutually to be fixed.
The mode of described welding is laser welding or ultrasonic bonding.
As shown from the above technical solution, the attachment structure of electrical core of power battery assembly described in the utility model, by setting
Put the groove on pole piece to fix with being connected copper sheet, make the side surfacing of battery modules electrode and load can be born, it is to avoid
Electrode side out-of-flatness, and the loose problem of the module that leads to.All copper sheets that connect are all to enter after groove on embedded pole piece again
Row welding, even if welding seam failure, connects copper sheet and also causes short circuit dangerous without departing from origin-location.Meanwhile, connect copper thickness
Increase area reduction material consumption total amount to be basically unchanged, but connect copper sheet and be integrally involved in conduction, internal resistance reduces on the contrary, anti tear
Ability is also improved.In addition, the welding connecting between copper sheet and battery core electrode adopts the laser welding of automatization or ultrasonic
Wave soldering connects, and does not need time-consuming manual grinding, smears the pretreatment such as solder(ing) paste, and weldquality is good, production efficiency and automatization
Level is high, and work situation also greatly improves.The weld seam connecting copper sheet with pole piece is butt weld, and section of weld joint amasss compares spot welding height
Go out several times, weld seam internal resistance small intensity is big.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the partial schematic diagram of A-A in Fig. 1.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described further：
As shown in figure 1, the attachment structure of the electrical core of power battery assembly of the present embodiment, including connect copper sheet 1, battery core 2 and
Multiple pole pieces 3 being fixed in battery core 2, the groove 31 that pole piece 3 is provided with width and is adapted with 1 width that is connected copper sheet, this groove
31 depth is identical with the thickness size connecting copper sheet 1, and pole piece 3 is connected with each other by the connection copper sheet 1 in embedded groove 31.
Connect being connected with each other of copper sheet 1 and pole piece 3 for convenience, then this pole piece 3 in battery core 2 in matrix arrangement.
As shown in Fig. 2 pole piece 3 is fixedly connected with battery core 2 by rivet 4.
Position limiting structure 21 is provided with battery core 2, this position limiting structure 21 is made up of two projections being oppositely arranged, this projection it
Between distance match with the width size being connected copper sheet 1, this position limiting structure 21 is able to ensure that corresponding connection copper sheet 1 can be accurate
Really embed in the electrode horizontal groove 31 of all connected battery cores.
When producing, power pole piece 3 is processed the horizontal groove 31 of one fixed width and depth, the direction of this groove 31 is
The vertical long side of battery core 2.In the battery core string according to different set of cells and mode, processing is corresponding to connect copper sheet 1, copper sheet 1 thickness with
The horizontal groove depth of pole piece 3 is consistent, and copper sheet 1 embedded part is consistent with horizontal well width, all connection copper sheets 1 of battery modules
After embedded pole piece 3 level trough, by clamping for module put into CNC control automatic laser welding machine or supersonic welder in, finally
Complete to connect the welding job of copper sheet 1 and pole piece 3, the mode length of this welding adopts laser welding or ultrasonic bonding.
Embodiment described above is only preferred implementation of the present utility model to be described, not to this practicality
New scope is defined, and on the premise of without departing from this utility model design spirit, those of ordinary skill in the art are to this
Various modifications and improvement that the technical scheme of utility model is made, all should fall into the protection of this utility model claims determination
In the range of.
Claims (7)
1. a kind of attachment structure of electrical core of power battery assembly it is characterised in that：Including connection copper sheet（1）, battery core（2）And it is multiple
It is fixed on battery core（2）On pole piece（3）, described pole piece（3）It is provided with width and be connected copper sheet（1）The groove that width is adapted
（31）, this groove（31）Depth be connected copper sheet（1）Thickness size identical, described pole piece（3）By embedding groove（31）
In connection copper sheet（1）It is connected with each other.
2. electrical core of power battery assembly according to claim 1 attachment structure it is characterised in that：Described pole piece（3）Edge
Battery core（2）Transverse direction and longitudinal direction direction be arranged in order.
3. electrical core of power battery assembly according to claim 1 attachment structure it is characterised in that：Described pole piece（3）Logical
Cross rivet（4）With battery core（2）It is fixedly connected.
4. electrical core of power battery assembly according to claim 1 attachment structure it is characterised in that：Described battery core（2）On
It is provided with position limiting structure（21）.
5. electrical core of power battery assembly according to claim 4 attachment structure it is characterised in that：Described position limiting structure
（21）Be made up of two projections being oppositely arranged, the distance between this projection be connected copper sheet（1）Width size match.
6. electrical core of power battery assembly according to claim 1 attachment structure it is characterised in that：Described connection copper sheet
（1）With pole piece（3）Mutually fixed by welding.
7. electrical core of power battery assembly according to claim 6 attachment structure it is characterised in that：The mode of described welding
For laser welding or ultrasonic bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620631240.6U CN205985165U (en) | 2016-06-24 | 2016-06-24 | Connection structure of power battery electricity core subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620631240.6U CN205985165U (en) | 2016-06-24 | 2016-06-24 | Connection structure of power battery electricity core subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205985165U true CN205985165U (en) | 2017-02-22 |
Family
ID=58022110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620631240.6U Active CN205985165U (en) | 2016-06-24 | 2016-06-24 | Connection structure of power battery electricity core subassembly |
Country Status (1)
| Country | Link |
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| CN (1) | CN205985165U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914336A (en) * | 2016-06-24 | 2016-08-31 | 合肥国轩高科动力能源有限公司 | Connection structure of power battery cell assembly |
-
2016
- 2016-06-24 CN CN201620631240.6U patent/CN205985165U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914336A (en) * | 2016-06-24 | 2016-08-31 | 合肥国轩高科动力能源有限公司 | Connection structure of power battery cell assembly |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |