CN110391515B - Composite busbar with anti-seismic function - Google Patents
Composite busbar with anti-seismic function Download PDFInfo
- Publication number
- CN110391515B CN110391515B CN201910768112.4A CN201910768112A CN110391515B CN 110391515 B CN110391515 B CN 110391515B CN 201910768112 A CN201910768112 A CN 201910768112A CN 110391515 B CN110391515 B CN 110391515B
- Authority
- CN
- China
- Prior art keywords
- circuit board
- hole
- busbar
- connecting piece
- transition
- 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.)
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Links
- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 230000007704 transition Effects 0.000 claims description 27
- 230000035939 shock Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 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
- 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
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/50—Fixed connections
- H01R12/51—Fixed connections for rigid printed circuits or like structures
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
The invention discloses a composite busbar with an anti-seismic function, which comprises the following components: the bus bar comprises a plurality of bus bars, a circuit board and a plurality of connecting pieces connected between the bus bars and the circuit board; and an anti-seismic structure is arranged around the joint of the circuit board and the connecting piece. According to the invention, the vibration-resistant structure is arranged at the surrounding part of the busbar and the connecting piece, when the vibration directions and the vibration amplitudes of the busbar and the circuit board are inconsistent, the forces in all directions are buffered to offset the acting force between the connecting piece and the circuit board, so that the vibration-resistant effect is achieved, the circuit board and the connecting piece can be firmly connected without falling off due to the offset of the vibration force, the occurrence of electrical connection failure of the connecting piece and the circuit board is fundamentally eradicated, and the strength of the composite busbar can be improved.
Description
Technical Field
The invention belongs to the technical field of bus bars, and particularly relates to a composite bus bar with an anti-seismic function.
Background
At present, due to the control of automobile cost by a vehicle factory, the integration of the auxiliary structure of the power battery is higher and higher, and the market gradually adopts a power battery composite busbar to replace the traditional plastic upper cover and low-voltage wiring harness scheme. In the prior art, the composite busbar structure used is shown in fig. 1, which has the following disadvantages: because of the width limitation of the circuit board 2, one end A of the connecting piece 3 is connected with the circuit board 2 only through about one tenth of the total area, and the two binding forces of horizontal shearing force and vertical stripping force are smaller; and the other end B of the connector 3 is connected to the bus bar 1, the bonding force of both the horizontal shearing force and the vertical peeling force is relatively large. When the vibration directions and the vibration amplitudes of the busbar 1 and the circuit board 2 are inconsistent, the end A and the end B of the connecting piece 3 are simultaneously stressed in two opposite directions on the same surface, and as the horizontal shearing force and the vertical stripping force of the end B are much larger than those of the end A, the tensile force borne by the end A is larger, so that the joint (namely the bonding pad) of the connecting piece 3 and the circuit board becomes the weakest place of the stress point in the whole composite busbar 1, and under the condition of large vibration or vibration force, the end A of the connecting piece 3 is easy to fall off from the bonding pad of the circuit board 2, so that the electric connection between the connecting piece 3 and the circuit board 2 is failed, and the electric connection of the whole composite busbar is failed. In actual running, the composite busbar is only subjected to force in one direction, and the force in other space directions is also applied to the composite busbar, so that the probability of failure of electrical connection is greatly increased.
Disclosure of Invention
In order to overcome the technical defects, the invention provides the composite busbar with the anti-vibration function, which can solve the vibration problem suffered by the composite busbar, thereby avoiding the situation that the electric connection of the whole composite busbar fails.
In order to solve the problems, the invention is realized according to the following technical scheme:
a composite busbar having an anti-seismic function, comprising: the bus bar comprises a plurality of bus bars, a circuit board and a plurality of connecting pieces connected between the bus bars and the circuit board;
and one side of the joint of the circuit board and the connecting piece is provided with an anti-seismic structure.
As a further improvement of the present invention, the shock-resistant structure includes: and the rectangular avoidance hole is arranged below the connecting part.
As a further improvement of the invention, the length of the rectangular relief hole is greater than the width of the connecting piece.
As a further improvement of the present invention, the seismic structure further includes: the first transition hole is connected to one end of the rectangular avoidance hole, and the rectangular avoidance hole is communicated with the first transition hole and extends to one side of the connecting position.
As a further improvement of the invention, a plurality of second transition holes are arranged at the edge of the circuit board and are arranged between the connecting part and the first transition holes, and the second transition holes and the first transition holes are arranged in an up-down diagonal manner.
As a further improvement of the invention, the first transition hole and the second transition hole are semicircular holes with equal diameters.
As a further improvement of the present invention, the seismic structure further includes: the first tearing hole is connected to the other end of the rectangular avoiding hole, and the rectangular avoiding hole is communicated with the first tearing hole and extends to the other side of the connecting position.
As a further improvement of the invention, the edge of the circuit board is provided with a second tearing hole which is arranged opposite to the first tearing hole vertically.
As a further improvement of the invention, the top ends of the first tearing hole and the second tearing hole are provided with tips.
As a further improvement of the invention, the circuit board is provided with a bonding pad, and the connecting piece and the bonding pad are welded by laser
Compared with the prior art, the invention has the beneficial effects that: through setting up shock-resistant structure in the surrounding department of busbar and connecting piece, when busbar and circuit board vibrations direction and vibration amplitude inconsistent, cushion the effort of each direction to offset the effort between connecting piece and the circuit board, and reach the shock-resistant effect, because vibration effort has been offset, can firmly be connected between circuit board and the connecting piece, can not drop, fundamentally stopped the appearance that the electrical connection of connecting piece and circuit board became invalid, can also improve the intensity of compound busbar.
Drawings
The invention is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic diagram of a prior art composite bus;
FIG. 2 is a schematic diagram of a composite bus according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of a composite bus according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a composite bus bar according to a second embodiment of the present invention;
fig. 5 is a partial enlarged view of a composite busbar according to a second embodiment of the present invention.
Marking: 1-a busbar; 2-a circuit board; 21-a second transition aperture; 22-a second tear hole; 23-bonding pads; 3-connectors; 4-an anti-seismic structure; 41-rectangular avoidance holes; 42-a first transition hole; 43-a first tear hole; 44-tip;
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
Example 1
The embodiment discloses a composite busbar with antidetonation function, as shown in fig. 2, includes: a plurality of bus bars 1, a circuit board 2, and a plurality of connecting pieces 3 connected between the bus bars and the circuit board 2; one side of the junction of the circuit board 2 and the connecting piece 3 is provided with an anti-vibration structure 4, and a certain distance is reserved between the anti-vibration structure 4 and the edge of the circuit board 2, and a notch on the edge of the circuit board 2 is not formed. The busbar 1 may be a copper bar or an aluminum bar, and the connecting piece 3 may be a nickel sheet.
In the above embodiment, as shown in fig. 3, the shock-resistant structure 4 includes: the rectangular avoidance hole 41 provided below the connection portion, and when the connection member 3 receives a force in the vertical direction (here, the bus bar 1 can turn up and down with a small angle with the connection portion as a fulcrum), the hollowed rectangular avoidance hole 41 can relieve the acting force between the connection member 3 and the circuit board 2 and make it gradually disappear.
In the above embodiment, the length of the rectangular escape hole 41 is larger than the width of the connector 3, so that the force between the connector 3 and the circuit board 2 can be more effectively counteracted.
In the above embodiment, the shock-resistant structure 4 further includes: the first transition hole 42 is connected to one end of the rectangular avoidance hole 41, and the rectangular avoidance hole 41 is communicated with the first transition hole 42 and extends to one side of the connection position.
In the above embodiment, the edge of the circuit board 2 is provided with a plurality of second transition holes 21, which are disposed between the connection portion and the first transition hole 42, and the second transition holes 21 and the first transition hole 42 are disposed diagonally upward and downward.
In practical use, the upper and lower surfaces of the bus bar 1 are pressed with a layer of PET insulating film, that is, the gap between the bus bar 1 and the circuit board 2 is covered with the PET insulating film, and when the connector 3 is subjected to a force in a non-up-down direction (here, the copper bar can rotate up and down at a small angle with the connection point as a fulcrum), the first transition hole 42 and the second transition hole 21 can relieve the acting force between the connector 3 and the circuit board 2 and make the acting force gradually disappear.
In the above embodiment, the first transition hole 42 and the second transition hole 21 are semicircular holes having equal diameters.
In the above embodiment, the bonding pad 23 is disposed on the circuit board 2, and the bonding pad 23 is disposed at the connection position between the circuit board 2 and the connection member 3, and the connection member 3 and the bonding pad 23 are welded by laser, so that the connection between the circuit board 2 and the bonding pad 23 can be enhanced.
In summary, the vibration-resistant structure 4 is arranged at the surrounding positions of the busbar 1 and the connecting piece 3, when the vibration directions and the vibration amplitudes of the busbar 1 and the circuit board 2 are inconsistent, the forces in all directions are buffered to offset the acting force between the connecting piece 3 and the circuit board 2, so that the vibration-resistant effect is achieved, and the circuit board 2 and the connecting piece 3 can be firmly connected and cannot fall off due to the offset of the vibration force, so that the occurrence of failure of electrical connection between the connecting piece 3 and the circuit board 2 is fundamentally avoided.
Example two
The present invention discloses another composite busbar with anti-seismic function, which is different from the first embodiment in that, as shown in fig. 4 and 5, in this embodiment, the anti-seismic structure 4 further includes: the first tearing hole 43 is connected to the other end of the rectangular avoiding hole 41, and the rectangular avoiding hole 41 is communicated with the first tearing hole 43 and extends to the other side of the connecting position.
In the above embodiment, the edge of the circuit board 2 is provided with the second tear hole 22 which is disposed vertically opposite to the first tear hole 43 with a slight distance.
In the above embodiment, the tips of the first and second tear holes 43, 22 are provided with the sickle-shaped tips 44.
In use, if the shock-resistant structure 4 receives a force exceeding the self-bearing force, the force will instantly tear the two tips 44, so that the first tearing hole 43 and the second tearing hole 22 are communicated, and the front-back force, the left-right force, the up-down force can be counteracted.
In summary, the vibration-resistant structure 4 is arranged at the surrounding positions of the busbar 1 and the connecting piece 3, when the vibration directions and the vibration amplitudes of the busbar 1 and the circuit board 2 are inconsistent, the forces in all directions are buffered to offset the acting force between the connecting piece 3 and the circuit board 2, so that the vibration-resistant effect is achieved, the circuit board 2 and the connecting piece 3 can be firmly connected without falling off due to the offset of the vibration force, the occurrence of failure of the electric connection between the connecting piece 3 and the circuit board 2 is fundamentally prevented, in addition, when the stress is overlarge, the tiny connection part between the two tearing holes is broken, and the offset effect of the acting force is enhanced.
The present invention is not limited to the preferred embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present invention are within the scope of the technical proposal of the present invention.
Claims (6)
1. A composite busbar having an anti-seismic function, comprising: the bus bar comprises a plurality of bus bars, a circuit board and a plurality of connecting pieces connected between the bus bars and the circuit board;
one side of the joint of the circuit board and the connecting piece is provided with an anti-seismic structure;
the shock-resistant structure includes: rectangular avoidance holes arranged below the connection parts;
the shock resistant structure further includes: the first tearing hole is connected to the other end of the rectangular avoiding hole, and the rectangular avoiding hole is communicated with the first tearing hole and extends to the other side of the connecting position; the edge of the circuit board is provided with a second tearing hole which is opposite to the first tearing hole up and down;
the top ends of the first tearing hole and the second tearing hole are provided with pointed ends.
2. The composite busbar of claim 1 wherein the length of the oblong relief aperture is greater than the width of the connector.
3. The composite busbar of claim 1, wherein the shock structure further comprises: the first transition hole is connected to one end of the rectangular avoidance hole, and the rectangular avoidance hole is communicated with the first transition hole and extends to one side of the connecting position.
4. The composite busbar of claim 3, wherein the edge of the circuit board is provided with a plurality of second transition holes disposed between the junction and the first transition holes, the second transition holes being disposed diagonally above and below the first transition holes.
5. The composite busbar of claim 4, wherein the first and second transition holes are semi-circular holes of equal diameter.
6. The composite busbar of claim 1 wherein the circuit board has pads thereon, the connector being laser welded to the pads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910768112.4A CN110391515B (en) | 2019-08-20 | 2019-08-20 | Composite busbar with anti-seismic function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910768112.4A CN110391515B (en) | 2019-08-20 | 2019-08-20 | Composite busbar with anti-seismic function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110391515A CN110391515A (en) | 2019-10-29 |
| CN110391515B true CN110391515B (en) | 2024-03-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910768112.4A Active CN110391515B (en) | 2019-08-20 | 2019-08-20 | Composite busbar with anti-seismic function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110391515B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112310534B (en) | 2019-12-27 | 2021-10-15 | 宁德时代新能源科技股份有限公司 | Separator assembly, battery module, battery pack, device, and manufacturing method |
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| Publication number | Publication date |
|---|---|
| CN110391515A (en) | 2019-10-29 |
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Effective date of registration: 20201111 Address after: 511458 101, 1st floor, building 1, No. 63, Huanshi Avenue South, Nansha District, Guangzhou City, Guangdong Province Applicant after: Guangzhou Anbo New Energy Technology Co.,Ltd. Address before: 510000 Room 1201 (A2) No. 4 Wangjiang Second Street, Nansha District, Guangzhou City, Guangdong Province Applicant before: AKM ELECTRONICS INDUSTRIAL (PANYU) Ltd. |
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