CN112563675A - Connecting bus for power battery and processing method thereof - Google Patents
Connecting bus for power battery and processing method thereof Download PDFInfo
- Publication number
- CN112563675A CN112563675A CN202011436515.8A CN202011436515A CN112563675A CN 112563675 A CN112563675 A CN 112563675A CN 202011436515 A CN202011436515 A CN 202011436515A CN 112563675 A CN112563675 A CN 112563675A
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- Prior art keywords
- positioning
- power battery
- aluminum bar
- ffc flexible
- salient point
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- 238000003672 processing method Methods 0.000 title claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 50
- 238000003466 welding Methods 0.000 claims abstract description 9
- 239000004411 aluminium Substances 0.000 claims abstract description 6
- 238000004080 punching Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 229910052759 nickel Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
Classifications
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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 invention discloses a connecting bus for a power battery and a processing method thereof, and relates to the technical field of conductive connection. Its technical scheme main points include FFC flexible line row and aluminium bar, FFC flexible line row includes a plurality of connecting wires, the connecting wire tip is provided with the connection piece, be provided with locating component between connection piece and the aluminium bar, and both pass through locating component realizes fixed connection in advance. According to the invention, the FFC flexible wire row and the aluminum bar are fixed in advance through the positioning assembly, so that the subsequent laser welding processing is facilitated.
Description
Technical Field
The invention relates to the technical field of conductive connection, in particular to a connecting bus for a power battery and a processing method thereof.
Background
The new energy automobile needs a large-capacity power battery, and the power battery is usually composed of small battery cores. How to connect the power battery cores is a key technology for grouping the power batteries. The power battery needs to have an efficient and low-cost busbar, the strong current of the power battery can be connected in series, and meanwhile, the low current such as a battery voltage detection signal and temperature detection is integrated to detect and control the performance of the battery.
Aluminum bars are used for large current connection, and usually, an FPC flexible circuit board is used to connect small currents such as voltage and temperature. A very thin nickel sheet is fixed on an FPC in advance through tin soldering, the other end of the nickel sheet is welded on an aluminum sheet through laser, and finally the nickel sheet is packaged into a whole through an insulating film with glue to form a power battery integrated bus, for example, a battery module signal acquisition device integrated with the FPC is disclosed in Chinese patent with publication number CN 208622846U. The integrated busbar has the advantages of simple structure, light weight, small size and easiness in installation, but the cost is higher due to the adoption of the FPC, and particularly the integrated busbar with an overlong structure does not have the cost advantage.
The FFC flexible line bank has the characteristics of low cost and unlimited length, and is very suitable for an integrated busbar with an ultra-long structure, so that the FFC flexible line bank gradually replaces an FPC (flexible printed circuit) flexible circuit board.
However, unlike the nickel plate which is relatively stable in position on the FPC, since the individual wires on the FFC are very flexible and cannot be held in a fixed position, the nickel plate is easily displaced, which causes difficulty in laser welding.
Disclosure of Invention
In view of the defects in the prior art, an object of the present invention is to provide a connection busbar for a power battery, in which an FFC flexible wire bar and an aluminum bar are fixed in advance by a positioning assembly, so as to facilitate subsequent laser welding.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a power battery is with arranging that connects, includes FFC flexible line row and aluminium bar, FFC flexible line row includes a plurality of connecting wires, the connecting wire tip is provided with the connection piece, be provided with locating component between connection piece and the aluminium bar, and both pass through locating component realizes fixed connection in advance.
Furthermore, the positioning assembly comprises a positioning hole formed in the connecting sheet and a positioning salient point arranged on the surface of the aluminum bar, and the positioning salient point and the positioning hole are in interference fit.
Furthermore, the positioning assembly comprises a clamping and embedding part formed by bending the connecting piece, and the aluminum bar is provided with a slot tightly matched with the clamping and embedding part.
Furthermore, the positioning assembly comprises a clamping portion formed on the connecting sheet, the aluminum bar is clamped in the clamping portion by the clamping portion, and a limiting clamping groove matched with the clamping portion is formed in the aluminum bar.
Furthermore, a first open slot penetrating through two end faces of the connecting piece is formed in the connecting piece, and the first open slot is communicated with the positioning hole.
Further, one end, far away from the positioning hole, of the first opening groove extends to the connecting sheet side wall.
Further, the cross-sectional shape of the positioning salient point is circular or polygonal.
Further, the positioning holes are circular holes or polygonal holes.
Another object of the present invention is to provide a method for processing a connection busbar for a power battery, which includes the following steps:
s100, punching a positioning salient point on the aluminum bar, and punching a positioning hole in interference fit with the positioning salient point at the end of the FFC flexible wire row;
s200, pressing the end of the FFC flexible wire row onto the positioning salient point through the positioning hole, and enabling the end of the FFC flexible wire row to be attached to the aluminum bar.
Further, the method also comprises the following steps:
s300, packaging the FFC flexible line row and the aluminum bar through an insulating film;
s400, welding and fixing the end of the FFC flexible line row and the aluminum bar by adopting laser.
In conclusion, the invention has the following beneficial effects:
1. the positioning assembly is adopted to fix the flexible connecting wire end (namely, the connecting sheet) on the aluminum bar in advance, so that the subsequent laser welding processing is facilitated;
2. the positioning convex points are matched with the positioning holes, so that the assembly is simple and the cost is low;
3. through locating component's use, effectively realize using FFC to replace FPC to effective reduce cost, and can make the power battery that size range is more extensive with female product of arranging of connecting, richen type product line.
Drawings
Fig. 1 is a schematic structural diagram of a connection busbar for a power battery in embodiment 1;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic view showing a structure of a connecting piece in embodiment 1;
fig. 4 is a cross-sectional view of an aluminum bar in example 1.
In the figure: 1. FFC flexible wire row; 11. a connecting wire; 2. aluminum bars; 21. positioning the salient points; 22. a groove; 3. connecting sheets; 31. positioning holes; 32. a first open slot; 33. a second open slot.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Example 1:
a power battery connecting bus bar refers to fig. 1 and fig. 2, and comprises an FFC flexible line bar 1 and a plurality of aluminum bars 2, wherein the FFC flexible line bar 1 comprises a plurality of connecting lines 11, and connecting sheets 3 are arranged at the end parts of the connecting lines 11; in the embodiment, the connecting sheet 3 and the connecting wire 11 are fixed by welding, the connecting sheet 3 is a nickel sheet, in other optional embodiments, the connecting sheet 3 and the connecting wire 11 can also be fixedly connected by other modes, and the connecting sheet 3 can also be made of other materials, which is not limited herein; a positioning assembly is arranged between the connecting sheet 3 and the aluminum bar 2, and the connecting sheet and the aluminum bar are in pre-fixed connection through the positioning assembly; connecting piece 3 passes through locating component fixed connection in advance with aluminium bar 2, then connecting piece 3 can not the skew position to make things convenient for subsequent laser welding processing.
Referring to fig. 1 and 2, the positioning assembly in this embodiment includes a positioning hole 31 opened on the connecting sheet 3, and a positioning bump 21 disposed on the surface of the aluminum bar 2, where the positioning bump 21 and the positioning hole 31 are in interference fit; the height of the positioning salient point 21 is 0.3 mm-1.5 mm, the thickness of the aluminum bar 2 in the embodiment is 1.5mm, the diameter of the positioning salient point 21 is 2mm, the height of the positioning salient point 21 is 1mm, the thickness of the connecting sheet 3 is 0.3mm, and the diameter of the positioning hole 31 is 1.9 mm; the web 3 is of a relatively thin thickness, so that it is a preferred embodiment to open a hole in the web 3, which facilitates handling and assembly. In other optional embodiments, the end of the connecting sheet 3 may be bent to form an embedded portion, then a slot tightly matched with the embedded portion is formed in the aluminum bar 2, and the embedded portion is embedded in the slot to realize the pre-fixed connection of the connecting sheet 3 and the aluminum bar 2; a clamping part can be formed on the connecting sheet 3, so that the connecting sheet 3 is integrally U-shaped or fork-shaped, the clamping part clamps the aluminum bar 2 therein, and then a limiting clamping groove matched with the clamping part is formed on the aluminum bar 2, so that the pre-fixed connection of the connecting sheet 3 and the aluminum bar 2 is realized; of course, the fastening element may also be used to fixedly connect the connecting piece 3 to the aluminum bar 2, which is not limited herein.
Referring to fig. 1 to 4, in the present embodiment, the positioning protruding point 21 on the aluminum bar 2 is formed by stamping, so that a groove 22 opposite to the positioning protruding point 21 is formed on the aluminum bar 2; in other alternative embodiments, the positioning protrusions 21 may also be formed together during the processing of the aluminum bar 2; a first opening groove 32 penetrating through two end faces of the connecting piece 3 is formed in the connecting piece 3, the first opening groove 32 is communicated with the positioning hole 31, one end, far away from the positioning hole 31, of the first opening groove 32 extends to the side wall of the connecting piece 3, a second opening groove 33 penetrating through the two end faces of the connecting piece 3 is formed in the connecting piece 3, the second opening groove 33 is communicated with the positioning hole, and the center line of the second opening groove 33 is overlapped with the center line of the first opening groove 32; the first opening groove 32 and the second opening groove 33 are used for enabling the positioning hole 31 to have elastic deformation after being opened, so that the positioning salient point 21 is conveniently clamped in the positioning hole 31; the combination structure of the first opening groove 32 and the second opening groove 33 in this embodiment has the advantage of being easy to process, and in other alternative embodiments, other opening manners may be adopted to make the positioning hole 31 have the elastic deformation amount.
Referring to fig. 2, in the present embodiment, the cross-sectional shape of the positioning bump 21 is a circle, and the positioning hole 31 is a circular hole matching with the circular hole; in other alternative embodiments, the cross-sectional shape of the positioning protruding point 21 is a polygon, and the positioning hole 31 is a polygonal hole, specifically, the polygonal positioning protruding point 21 may be matched with the circular positioning hole 31, the polygonal positioning protruding point 21 is matched with the polygonal positioning hole 31, or the circular positioning protruding point 21 is matched with the polygonal positioning hole 31, without limitation, the positioning protruding point 21 and the positioning hole 31 can be in interference fit, so that the connecting sheet 3 and the aluminum bar 2 are fixedly connected.
Example 2:
a processing method of a connecting bus bar for a power battery comprises the following steps:
s100, punching a positioning salient point on the aluminum bar, and punching a positioning hole in interference fit with the positioning salient point at the end of the FFC flexible wire row;
s200, pressing the end of the FFC flexible wire row onto the positioning salient point through the positioning hole to enable the end of the FFC flexible wire row to be attached to the aluminum bar;
s300, packaging the FFC flexible line row and the aluminum bar through an insulating film;
s400, welding and fixing the end of the FFC flexible line row and the aluminum bar by adopting laser.
Claims (10)
1. The utility model provides a power battery is with connecting female arranging, includes FFC flexible line row and aluminium bar, FFC flexible line row includes a plurality of connecting wires, the connecting wire tip is provided with connection piece, its characterized in that: and a positioning assembly is arranged between the connecting sheet and the aluminum bar, and the connecting sheet and the aluminum bar are fixedly connected in advance through the positioning assembly.
2. The power battery connecting busbar according to claim 1, wherein: the positioning assembly comprises a positioning hole formed in the connecting sheet and a positioning salient point arranged on the surface of the aluminum bar, and the positioning salient point and the positioning hole are in interference fit.
3. The power battery connecting busbar according to claim 1, wherein: the positioning assembly comprises a clamping and embedding part formed by bending the connecting piece, and the aluminum bar is provided with a slot tightly matched with the clamping and embedding part.
4. The power battery connecting busbar according to claim 1, wherein: the positioning assembly comprises a clamping portion formed on the connecting sheet, the aluminum bar is clamped in the clamping portion by the clamping portion, and a limiting clamping groove matched with the clamping portion is formed in the aluminum bar.
5. The power battery connecting busbar according to claim 2, wherein: the connecting piece is provided with a first open slot penetrating through two end faces of the connecting piece, and the first open slot is communicated with the positioning hole.
6. The power battery connecting busbar according to claim 5, wherein: one end, far away from the positioning hole, of the first opening groove extends to the side wall of the connecting sheet.
7. The power battery connecting busbar according to claim 2, wherein: the cross section of the positioning salient point is circular or polygonal.
8. The power battery connecting busbar according to claim 2, wherein: the positioning holes are circular holes or polygonal holes.
9. A processing method of a connecting bus bar for a power battery is characterized by comprising the following steps:
s100, punching a positioning salient point on the aluminum bar, and punching a positioning hole in interference fit with the positioning salient point at the end of the FFC flexible wire row;
s200, pressing the end of the FFC flexible wire row onto the positioning salient point through the positioning hole, and enabling the end of the FFC flexible wire row to be attached to the aluminum bar.
10. The processing method of the power battery connecting busbar according to claim 9, further comprising the following steps:
s300, packaging the FFC flexible line row and the aluminum bar through an insulating film;
s400, welding and fixing the end of the FFC flexible line row and the aluminum bar by adopting laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011436515.8A CN112563675A (en) | 2020-12-10 | 2020-12-10 | Connecting bus for power battery and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011436515.8A CN112563675A (en) | 2020-12-10 | 2020-12-10 | Connecting bus for power battery and processing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112563675A true CN112563675A (en) | 2021-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011436515.8A Pending CN112563675A (en) | 2020-12-10 | 2020-12-10 | Connecting bus for power battery and processing method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN112563675A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829013A (en) * | 2021-09-29 | 2021-12-24 | 东莞市晟合科技有限公司 | Special-shaped flexible flat wire for new energy automobile battery signal acquisition and manufacturing method thereof |
| CN114614121A (en) * | 2022-03-29 | 2022-06-10 | 苏州赛伍应用技术股份有限公司 | Manufacturing process of power battery signal acquisition assembly and power battery signal acquisition board thereof |
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|---|---|---|---|---|
| JP2012227004A (en) * | 2011-04-20 | 2012-11-15 | Auto Network Gijutsu Kenkyusho:Kk | Battery connection assembly and battery module |
| CN104143387A (en) * | 2013-05-10 | 2014-11-12 | 日立金属株式会社 | Flat wiring member and method of manufacturing the same |
| JP2015046479A (en) * | 2013-08-28 | 2015-03-12 | 株式会社オートネットワーク技術研究所 | Circuit configuration |
| CN104889277A (en) * | 2014-09-22 | 2015-09-09 | 国家电网公司 | Quick positioning tool suitable for multi-specification busbars |
| CN210037004U (en) * | 2019-04-24 | 2020-02-07 | 湖南中车时代电动汽车股份有限公司 | Temperature acquisition device |
| CN111132452A (en) * | 2020-01-14 | 2020-05-08 | 奕东电子科技股份有限公司 | FPC acquisition module of power battery |
-
2020
- 2020-12-10 CN CN202011436515.8A patent/CN112563675A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012227004A (en) * | 2011-04-20 | 2012-11-15 | Auto Network Gijutsu Kenkyusho:Kk | Battery connection assembly and battery module |
| CN104143387A (en) * | 2013-05-10 | 2014-11-12 | 日立金属株式会社 | Flat wiring member and method of manufacturing the same |
| JP2015046479A (en) * | 2013-08-28 | 2015-03-12 | 株式会社オートネットワーク技術研究所 | Circuit configuration |
| CN104889277A (en) * | 2014-09-22 | 2015-09-09 | 国家电网公司 | Quick positioning tool suitable for multi-specification busbars |
| CN210037004U (en) * | 2019-04-24 | 2020-02-07 | 湖南中车时代电动汽车股份有限公司 | Temperature acquisition device |
| CN111132452A (en) * | 2020-01-14 | 2020-05-08 | 奕东电子科技股份有限公司 | FPC acquisition module of power battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829013A (en) * | 2021-09-29 | 2021-12-24 | 东莞市晟合科技有限公司 | Special-shaped flexible flat wire for new energy automobile battery signal acquisition and manufacturing method thereof |
| CN114614121A (en) * | 2022-03-29 | 2022-06-10 | 苏州赛伍应用技术股份有限公司 | Manufacturing process of power battery signal acquisition assembly and power battery signal acquisition board thereof |
| CN114614121B (en) * | 2022-03-29 | 2024-04-30 | 苏州赛伍应用技术股份有限公司 | Manufacturing process of power battery signal acquisition component and power battery signal acquisition board thereof |
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| PB01 | Publication | ||
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| CB02 | Change of applicant information |
Address after: No. 521, Zhujiang Road, high tech Zone, Suzhou City, Jiangsu Province Applicant after: Suzhou Xidian New Energy Electric Co.,Ltd. Address before: No. 521, Zhujiang Road, high tech Zone, Suzhou City, Jiangsu Province Applicant before: SUZHOU WEST DEANE MACHINERY Inc. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210326 |
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| RJ01 | Rejection of invention patent application after publication |