CN203932177U - A kind of cell connector and use the electrokinetic cell of this cell connector - Google Patents
A kind of cell connector and use the electrokinetic cell of this cell connector Download PDFInfo
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- CN203932177U CN203932177U CN201320608352.6U CN201320608352U CN203932177U CN 203932177 U CN203932177 U CN 203932177U CN 201320608352 U CN201320608352 U CN 201320608352U CN 203932177 U CN203932177 U CN 203932177U
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- connecting portion
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- cell
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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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Abstract
The utility model provides a kind of cell connector and has used the electrokinetic cell of this cell connector, wherein cell connector comprises aluminium connecting portion, copper connecting portion and rivet, described aluminium connecting portion is connected with the aluminium terminal of battery, described copper connecting portion is connected with the copper tip of battery, between described aluminium connecting portion and copper connecting portion, first after welding, is connected by rivet again; Described aluminium connecting portion comprises the first connecting portion, the intermediate buffering portion being connected with the aluminium terminal of battery and the second connecting portion being connected with copper connecting portion; Described the first connecting portion, intermediate buffering portion, the second connecting portion are one-body molded; Meanwhile, the utility model also provides a kind of electrokinetic cell, connects the cell connector that described cell connector provides for the utility model between the cell of this electrokinetic cell by cell connector.The cell connector that uses the utility model to provide, has solved the problem that between brace and electrode terminal, copper aluminium welding difficulty, not prison welding are leaned on, and has reduced welding cost simultaneously.
Description
Technical field
The utility model relates to a kind of cell connector and uses the electrokinetic cell of this cell connector.
Background technology
Society, along with the raising of people's living standard, the recoverable amount of automobile is also in cumulative year after year.The exhaust emissions problem of bringing due to fuel vehicle is a key factor of current environmental pollution.Therefore, the new-energy automobiles such as electric automobile or hybrid electric vehicle arise at the historic moment, and they are representing a developing direction of future automobile.
In electric automobile, core is exactly the power battery pack as power resources the most.At present, lithium ion battery because it has that energy density is high, safety, volume is little etc., and advantage forms the first-selected power source into people.Between each cell of power battery pack, by serial or parallel connection, can form power battery pack, with this, meet the various power demands of automobile.The electrode terminal of each cell connects accordingly so that form serial or parallel connection between cell, thereby forms power battery pack.Obviously, because the electric power of electrokinetic cell is exported the syndeton that depends on terrifically electrode terminal, thereby the syndeton between the electrode terminal of each cell is larger for the performance impact of electrokinetic cell, the reliability of this syndeton, internal resistance etc. are closely related with stability and the electric power output performance of electrokinetic cell.
In prior art, connection between each cell of power battery pack be two poles by aluminium brace and battery respectively laser welding complete, because battery electrode column is copper on one side, aluminium on one side, and welding between aluminium brace and copper-base post is because be the welding between dissimilar metal, therefore welding difficulty, adopts laser welding weak effect.For the problems referred to above, prior art has proposed by bimetallic, to weld between each cell, be about to copper brace and the welding of copper-base post, aluminium brace and the welding of aluminium pole, between copper brace and aluminium brace, by explosive welding (EW), be connected, but there is the problem that welding cost is high, stock utilization is low, not prison welding is leaned in this kind of method.
Simultaneously, utility model patent CN201120477094 has proposed a kind of electrokinetic cell connecting plate, this electrokinetic cell connecting plate comprises for connecting the first connecting plate and second connecting plate of the battery electrode column of electrokinetic cell, between the first connecting plate and the second connecting plate, by the welding section consisting of fusible alloy welding material arranging between mutually close end, is fixedly connected with; Utility model patent CN200820179656 has proposed a kind of power battery pack, connected in series or in parallel by electrode terminal between described cell, described electrode terminal is plates, between described electrode terminal, by thering is the intermediate connector of pooling feature, connect, and the annexation of described electrode terminal and intermediate connector is for being fitted and connected.All there is the solid problem of not prison welding in two kinds of cell connected modes described in above-mentioned patent, and then make electrokinetic cell when being subject to external force collision, easily there is the loosening phenomenon even disconnecting in the connection between electrode terminal, greatly affects battery performance, and its welding cost is also higher.
Utility model content
The utility model is in order to solve in prior art the problems such as copper aluminium welding difficulty between cell connector and the terminal of battery, welding effect be poor, the cell connector that a kind of welding cost is low, switching performance is good is provided and used the electrokinetic cell of this cell connector.
First the utility model provides a kind of cell connector, comprising aluminium connecting portion, copper connecting portion and rivet, described aluminium connecting portion is connected with the aluminium terminal of battery, described copper connecting portion is connected with the copper tip of battery, between described aluminium connecting portion and copper connecting portion, first after welding, is connected by rivet again.
Preferably, described aluminium connecting portion comprises the first connecting portion, the intermediate buffering portion being connected with the aluminium terminal of battery and the second connecting portion being connected with copper connecting portion; Described the first connecting portion, intermediate buffering portion, the second connecting portion are one-body molded.
Preferably, described aluminium connecting portion consists of aluminium foil more than one deck.
Preferably, the first connecting portion and second connecting portion of described aluminium connecting portion form by laminated aluminium foil, and the laminated aluminium foil of described the first connecting portion and the second linking part is stitching state; Described intermediate buffering portion also consists of laminated aluminium foil, and the aluminium foil of described intermediate buffering portion is the state that freely arches upward.
Preferably, between described aluminium connecting portion and copper connecting portion by ultrasonic bonding.
Preferably, the difference in height of the bottom surface of the first connecting portion of described aluminium connecting portion and the bottom surface of the second connecting portion is the thickness of copper connecting portion.
Preferably, on the second connecting portion of described aluminium connecting portion, be provided with supersonic welding access slot.
Preferably, described supersonic welding access slot is " L " type.
Preferably, be provided with the first welding hole matching with the aluminium terminal shape of battery on the first connecting portion of described aluminium connecting portion, the aluminium terminal of described battery passes the first welding hole and welds together with the first connecting portion.
Preferably, be provided with the second welding hole matching with the copper tip shape of battery on described copper connecting portion, the copper tip of described battery passes the second welding hole and welds together with copper connecting portion.
Preferably, on the second connecting portion of described aluminium connecting portion, be also provided with welding connecting hole; The position of described welding connecting hole is corresponding with the position of the second welding hole; The internal diameter of described welding connecting hole is greater than the diameter of the second welding hole.
Preferably, described welding connecting hole is " U " type.
Preferably, on the second connecting portion of described aluminium connecting portion, be provided with the first riveted holes, on described copper connecting portion, be provided with second riveted holes corresponding with the first riveted holes, described rivet is riveted together the second connecting portion and copper connecting portion through described the first riveted holes and the second riveted holes.
Preferably, the quantity of described the first riveted holes is 2, and is symmetrically distributed in the both sides of welding connecting hole, and the quantity of described the second riveted holes is all corresponding with quantity and the position of the first riveted holes with position.
The utility model also provides a kind of electrokinetic cell, between each cell of described electrokinetic cell, by cell connector, connects, and described cell connector is above-mentioned cell connector.
Adopt the cell connector proposing in the utility model for the connection between the cell of electrokinetic cell, not only make the welding procedure between cell connector and battery terminal simple, and reduced welding cost, simultaneously, copper connecting portion is connected by rivet with after the welding of aluminium connecting portion again, guarantee the fastness being connected between cell connector and battery terminal, also reduced the internal resistance of battery simultaneously, improved fail safe and the stability of battery.
Accompanying drawing explanation
Fig. 1 is the structure explosive view of cell connector;
Fig. 2 is the structural representation of aluminium foil;
Fig. 3 is the schematic cross-section of aluminium foil;
Fig. 4 is the electrokinetic cell syndeton schematic diagram of embodiment of the present utility model.
Embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.
As shown in Figure 1 and Figure 2, the cell connector in the utility model comprises rivet 1, aluminium connecting portion 2 and copper connecting portion 3, and between aluminium connecting portion 2 and copper connecting portion 3, first the mode by welding is connected, then is fixedly connected with by rivet 1.Welding method is normal welding method in prior art, is preferably ultrasonic welding method.Wherein, on aluminium connecting portion 2 with on copper connecting portion 3, be respectively arranged with the first riveted holes 233 of matching with rivet 1 shape and the pore size of the second riveted holes 32, the first riveted holes 233 and the second riveted holes 32 and determine according to rivet diameter.Aluminium connecting portion 2 is fixedly connected with by rivet 1 after being welded to connect with copper connecting portion 3 again, be welded to connect the internal resistance that can reduce cell connector, and rivet 1 is fixedly connected with the more firm stable that is connected making between aluminium connecting portion 2 and copper connecting portion 3, can avoid electrokinetic cell in use because rocking compared with causing greatly, between copper connecting portion and aluminium connecting portion, to occur the separated phenomenon that comes off, thereby affect battery performance.
As shown in Figure 2, aluminium connecting portion 2 described in the utility model comprises the first connecting portion 21, intermediate buffering portion 22 and the second connecting portion 23, and wherein the first connecting portion 21, intermediate buffering portion 22, the second connecting portion 23 are preferably one-body molded.On the first connecting portion 21 of aluminium connecting portion 2, also include the first welding hole 211 matching with the aluminium terminal shape of battery, pore size is determined according to the diameter of the aluminium terminal of battery, the aluminium terminal of battery is through the first welding hole 211, between the aluminium terminal of battery and the first welding hole 211, by welding manner, be connected, welding method is normal welding method in prior art, is preferably laser welding.
In the utility model, aluminium connecting portion 2 can consist of aluminium foil more than one deck, and not only elasticity is larger compared with individual layer aluminium flake for laminated aluminium foil, and intensity is also larger, and by the cell connector that comprises laminated aluminium foil, for electrokinetic cell, shock-absorbing capacity is better.Above-mentioned copper connecting portion 3 consists of copper sheet, on copper connecting portion 3, be also provided with the second welding hole 31 matching with the copper tip shape of battery, as shown in Figure 1, the pore size of the second welding hole 31 is determined according to the copper tip diameter of battery, the copper tip of battery is through the second welding hole 31, between the copper tip of battery and the second welding hole 31, by welding manner, be connected, welding method is normal welding method in prior art, is preferably laser welding.In the present embodiment, aluminium connecting portion 2 consists of 20 thick thin aluminium foils of 0.1mm, the copper sheet that copper connecting portion 3 is 1mm for thickness.
In the utility model, the first connecting portion 21 of aluminium connecting portion 2 and the second connecting portion 23 form by laminated aluminium foil, and the laminated aluminium foil of the first linking part 21 and the second linking part 23 is all stitching state, intermediate buffering portion 22 also consists of laminated aluminium foil, the aluminium foil of intermediate buffering portion is the state that freely arches upward, as shown in Figure 3, above-mentioned the first connecting portion 21 and the second connecting portion 23 are pressing region, pressing region is to adopt heat pressing process of the prior art or other conventional process for pressing, laminated aluminium foil is pressed to together, to improve the intensity of the first connecting portion 21 and the second connecting portion 23, be convenient to punching and welding.Above-mentioned intermediate buffering portion 22 is the region of freely arching upward of multi-layer thin aluminium foil, and multi-layer thin aluminium foil is the state that freely arches upward, and has retained the original softer characteristic of thin aluminium foil.After the pressing region of the first linking part and the second connecting portion is fixed, middle buffer part is the state that freely arches upward, because aluminium foil has softer characteristic, therefore good cushioning effect can be played in the region of freely arching upward, and can prevent between battery and battery that due to external condition, producing strenuous vibration causes damage to battery.
As shown in Figure 3, the bottom surface of the first connecting portion 21 of aluminium linking part 2 and the bottom surface of the second connecting portion 23 be not at same plane, preferably, the difference in height of the bottom surface of the bottom surface of the first connecting portion 21 and the second connecting portion 23 is d, wherein d is the thickness of copper connecting portion 3, after second connecting portion 23 that can guarantee like this aluminium connecting portion 2 is connected with copper connecting portion 3, the bottom surface of the bottom surface of copper connecting portion 3 and the first connecting portion 21 is in same plane, thereby is convenient to cell connector and battery terminal better welds.
As shown in Figure 2, on the second connecting portion 23 of aluminium connecting portion 2, be provided with supersonic welding access slot 231, supersonic welding access slot 231 can be before welding, to be arranged on the second connecting portion 23, to carry out ultrasonic bonding, wave welding head of ultrasonic wave pressed welding groove 231 that the second connecting portion 23 is connected by supersonic welding with copper connecting portion 3, simultaneously, also can be after completing the welding of aluminium connecting portion 2 and copper connecting portion 3, on the surface of aluminium connecting portion 2, have supersonic welding access slot 231, supersonic welding access slot 231 is preferably " L " type.On the second connecting portion 23 of aluminium connecting portion 2, also include welding connecting hole 232, the position of described welding connecting hole 232 is corresponding with the position of the second welding hole 31 on copper connecting portion, in the utility model, the shape of welding connecting hole 232 is not required, the internal diameter of welding connecting hole 232 is greater than the diameter of the second welding hole 31 on copper connecting portion, and the existence of welding connecting hole 232 makes the welding between copper connecting portion 3 and the copper tip of battery more convenient.Preferably, welding connecting hole 232 is " U " type, " U " type welding connecting hole 232 not only makes the welding between copper connecting portion 3 and the copper tip of battery more convenient, and while also having avoided carrying out ultrasonic bonding between aluminium connecting portion 2 and copper connecting portion 3, aluminium connecting portion 2 edges are because of the situation of stressed excessive appearance fracture.
As shown in Figure 1 and Figure 2, on the second connecting portion 23 of described aluminium connecting portion 2, be provided with the first riveted holes 233 matching with rivet 1 shape, on described copper connecting portion 3, be provided with second riveted holes 32 corresponding with the first riveted holes 233, rivet 1 is riveted together the second connecting portion 23 and copper connecting portion 3 through described the first riveted holes 233 and the second riveted holes 32.Preferably, the quantity of described the first riveted holes 233 is 2, and be symmetrically distributed in the both sides of welding connecting hole 232, the quantity of described the second riveted holes 32 is all corresponding with quantity and the position of the first riveted holes 233 with position, be symmetrical arranged riveted holes, can avoid when being fixedly connected with by rivet 1, because being subject to force unbalance to cause the second connecting portion 2 to be connected appearance between 3 with copper, throw off phenomenon, and affect the effect that is connected between aluminium connecting portion and copper connecting portion, thereby cell resistance is increased, affect battery performance.
Meanwhile, the utility model also provides a kind of electrokinetic cell, and described electrokinetic cell is formed by connecting by connection in series-parallel each other by cell, and the cell connector providing by the utility model between two adjacent cells connects.As shown in Figure 1, Figure 2, Figure 4 shows, the aluminium connecting portion 2 of cell connector is connected with the aluminium terminal of cell wherein, the aluminium terminal of cell welds together with aluminium connecting portion 2 through the first welding hole 211 on aluminium connecting portion 2, welding manner is preferably laser welding, the copper connecting portion 3 of cell connector is connected with the copper tip of adjacent monomer battery, the copper tip of cell welds together with copper connecting portion 3 through the second welding hole 31 on copper connecting portion 3, and welding manner is preferably laser welding.Other structures of electrokinetic cell described in the utility model, composition, assembling similarly to the prior art, do not repeat them here.The cell connector that employing the utility model provides is for the connection between power cell, the problem that while having solved the welding of brace and battery electrode column, between dissimilar metal, welding difficulty, not prison welding are leaned on, has also reduced welding cost simultaneously, has reduced the internal resistance of cell, has improved fail safe and the stability of battery.
Those skilled in the art easily know; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.Protection range of the present utility model is determined by claims.
Claims (14)
1. a cell connector, comprises aluminium connecting portion, copper connecting portion and rivet, and described aluminium connecting portion is connected with the aluminium terminal of battery, and described copper connecting portion is connected with the copper tip of battery, between described aluminium connecting portion and copper connecting portion, after welding, is connected by rivet again;
It is characterized in that, described aluminium connecting portion comprises the first connecting portion, the intermediate buffering portion being connected with the aluminium terminal of battery and the second connecting portion being connected with copper connecting portion;
Described the first connecting portion, intermediate buffering portion, the second connecting portion are one-body molded.
2. cell connector according to claim 1, is characterized in that, described aluminium connecting portion consists of aluminium foil more than one deck.
3. cell connector according to claim 1, is characterized in that, described the first connecting portion and the second connecting portion form by laminated aluminium foil, and described laminated aluminium foil is stitching state;
Described intermediate buffering portion consists of laminated aluminium foil, and described laminated aluminium foil is the state that freely arches upward.
4. cell connector according to claim 1, is characterized in that, described in be welded as ultrasonic bonding.
5. cell connector according to claim 1, is characterized in that, the difference in height between the bottom surface of described the first connecting portion and the bottom surface of the second connecting portion is the thickness of copper connecting portion.
6. cell connector according to claim 1, is characterized in that, is provided with supersonic welding access slot above described the second connecting portion.
7. cell connector according to claim 6, is characterized in that, described supersonic welding access slot is " L " type.
8. cell connector according to claim 1, is characterized in that, is provided with the first welding hole matching with the aluminium terminal shape of battery on described the first connecting portion, and the aluminium terminal of described battery passes the first welding hole and welds together with the first connecting portion.
9. cell connector according to claim 1, is characterized in that, is provided with the second welding hole matching with the copper tip shape of battery on described copper connecting portion, and the copper tip of described battery passes the second welding hole and welds together with copper connecting portion.
10. cell connector according to claim 1, is characterized in that, on described the second connecting portion, has welding connecting hole;
The position of described welding connecting hole is corresponding with the position of the second welding hole;
The internal diameter of described welding connecting hole is greater than the diameter of the second welding hole.
11. cell connectors according to claim 10, is characterized in that, described welding connecting hole is " U " type.
12. cell connectors according to claim 10, it is characterized in that, on described the second connecting portion, be provided with the first riveted holes, on described copper connecting portion, be provided with second riveted holes corresponding with the first riveted holes, described rivet is riveted together the second connecting portion and copper connecting portion through described the first riveted holes and the second riveted holes.
13. cell connectors according to claim 12, is characterized in that, the quantity of described the first riveted holes is 2, and are symmetrically distributed in the both sides of welding connecting hole, and the quantity of described the second riveted holes is all corresponding with quantity and the position of the first riveted holes with position.
14. 1 kinds of electrokinetic cells, is characterized in that, between the cell of electrokinetic cell, by cell connector, connect, and described cell connector is the cell connector described in claim 1-13 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320608352.6U CN203932177U (en) | 2013-09-30 | 2013-09-30 | A kind of cell connector and use the electrokinetic cell of this cell connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320608352.6U CN203932177U (en) | 2013-09-30 | 2013-09-30 | A kind of cell connector and use the electrokinetic cell of this cell connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203932177U true CN203932177U (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320608352.6U Expired - Lifetime CN203932177U (en) | 2013-09-30 | 2013-09-30 | A kind of cell connector and use the electrokinetic cell of this cell connector |
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| Country | Link |
|---|---|
| CN (1) | CN203932177U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105742553A (en) * | 2016-02-26 | 2016-07-06 | 安徽天鑫能源科技有限公司 | Battery connection structure employing battery connection sheet with fins |
| CN107658411A (en) * | 2016-07-26 | 2018-02-02 | 宁德时代新能源科技股份有限公司 | Output pole assembly and battery module |
| CN112889180A (en) * | 2018-10-31 | 2021-06-01 | 日本汽车能源株式会社 | Battery module |
| CN113519086A (en) * | 2019-03-12 | 2021-10-19 | 日本汽车能源株式会社 | Bus bar and battery module using same |
| US12021266B2 (en) | 2018-10-31 | 2024-06-25 | Vehicle Energy Japan Inc. | Battery module |
-
2013
- 2013-09-30 CN CN201320608352.6U patent/CN203932177U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105742553A (en) * | 2016-02-26 | 2016-07-06 | 安徽天鑫能源科技有限公司 | Battery connection structure employing battery connection sheet with fins |
| CN105742553B (en) * | 2016-02-26 | 2018-07-06 | 安徽天鑫能源科技有限公司 | It is a kind of to use the battery connecting construction with fin cell connector |
| CN107658411A (en) * | 2016-07-26 | 2018-02-02 | 宁德时代新能源科技股份有限公司 | Output pole assembly and battery module |
| CN112889180A (en) * | 2018-10-31 | 2021-06-01 | 日本汽车能源株式会社 | Battery module |
| US20210384592A1 (en) * | 2018-10-31 | 2021-12-09 | Vehicle Energy Japan Inc. | Battery Module |
| CN112889180B (en) * | 2018-10-31 | 2024-01-23 | 日本汽车能源株式会社 | Battery module |
| US12021266B2 (en) | 2018-10-31 | 2024-06-25 | Vehicle Energy Japan Inc. | Battery module |
| CN113519086A (en) * | 2019-03-12 | 2021-10-19 | 日本汽车能源株式会社 | Bus bar and battery module using same |
| CN113519086B (en) * | 2019-03-12 | 2024-05-10 | 日本汽车能源株式会社 | Bus bar and battery module using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141105 |
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| CX01 | Expiry of patent term |