CN219981133U - Connection structure for connecting flexible circuit board and aluminum bar - Google Patents
Connection structure for connecting flexible circuit board and aluminum bar Download PDFInfo
- Publication number
- CN219981133U CN219981133U CN202321293392.6U CN202321293392U CN219981133U CN 219981133 U CN219981133 U CN 219981133U CN 202321293392 U CN202321293392 U CN 202321293392U CN 219981133 U CN219981133 U CN 219981133U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- flexible circuit
- aluminum bar
- welding
- conductive layer
- 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
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 72
- 238000003466 welding Methods 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 17
- 229910052802 copper Inorganic materials 0.000 claims description 17
- 239000010949 copper Substances 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 34
- 229910052759 nickel Inorganic materials 0.000 abstract description 17
- 238000005516 engineering process Methods 0.000 abstract description 15
- 238000009434 installation Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005476 soldering Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 3
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 238000011990 functional testing Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Landscapes
- Multi-Conductor Connections (AREA)
Abstract
The utility model relates to a connecting structure for connecting a flexible circuit board and aluminum bars, wherein the flexible circuit board is manufactured by an SMT-free paster process and comprises a conductive layer and a front insulating layer and a back insulating layer, wherein the front insulating layer and the back insulating layer are covered on the front surface and the back surface of the conductive layer; the connection structure includes: and the connecting end is integrally formed with the conductive layer and extends to the outer side of the flexible circuit board, and the reverse surface of the connecting end is exposed to form a welding surface for directly welding the aluminum bar. According to the utility model, the traditional steps of transitional connection of the nickel sheet to the aluminum bar and pasting the nickel sheet to the flexible circuit board by using an SMT technology are eliminated, and the aluminum bar is directly connected to the flexible circuit board by adopting a direct welding mode, so that the installation cost and the installation difficulty of the aluminum bar are reduced.
Description
Technical Field
The utility model relates to the technical field of power batteries, in particular to a connecting structure for connecting a flexible circuit board and aluminum bars.
Background
The wiring harness on the battery module sampling harness isolation board assembly in the prior art is generally divided into two types, namely an FPC (flexible circuit board, which is an abbreviation of Flexible Printed Circuit) and a wire. The conductive layer of the flexible circuit board is usually copper-based, and the aluminum bar (conductive bus bar for connecting the battery core) in the assembly is generally connected to the flexible circuit board through a nickel sheet in a transition manner, and the nickel sheet needs to be pasted onto the FPC board by adopting an SMT (surface mount technology, abbreviated as Surface Mounted Technology) technology, and then is connected to the FPC board by adopting an FPC reflow soldering process, and the FPC reflow soldering process needs specific equipment, so that the production process is high in requirement and the production cost is high. Therefore, how to reduce the installation cost and the installation difficulty of the aluminum bar is a problem to be solved by the utility model.
Disclosure of Invention
In order to solve the problems, the utility model provides a connecting structure for connecting a flexible circuit board and an aluminum bar, which omits the traditional steps of transitional connection of the aluminum bar by using a nickel sheet and pasting of the nickel sheet to the flexible circuit board by using an SMT technology, directly connects the aluminum bar to the flexible circuit board by adopting a direct welding mode, and reduces the installation cost and the installation difficulty of the aluminum bar.
The utility model is realized by the following scheme: a connection structure for connecting a flexible circuit board and aluminum bars is characterized in that the flexible circuit board is manufactured by an SMT-free paster process and comprises a conductive layer and a front insulating layer and a back insulating layer, wherein the front insulating layer and the back insulating layer are covered on the front surface and the back surface of the conductive layer; the connection structure includes: and the connecting end is integrally formed with the conductive layer and extends to the outer side of the flexible circuit board, and the back surface of the connecting end is exposed to form a welding surface for directly welding the aluminum bar.
The utility model further improves a connecting structure for connecting the flexible circuit board and the aluminum bar, wherein the conductive layer is aluminum-based, and laser welding is adopted between the aluminum bar and the welding surface.
The utility model further improves a connecting structure for connecting a flexible circuit board and aluminum bars, wherein the thickness of the connecting end is larger than that of the connecting end when the conductive layer is copper-based, the strength requirement of laser welding of the connecting end and the aluminum bars is met, and the front surface of the connecting end is exposed completely and forms an operation surface for laser welding.
The utility model further improves the connecting structure for connecting the flexible circuit board and the aluminum bar, wherein the thickness of the connecting end is not less than 1mm.
The utility model further improves a connecting structure for connecting the flexible circuit board and the aluminum bar, wherein the conductive layer is copper-based, and ultrasonic welding is adopted between the aluminum bar and the welding surface.
A further improvement of the connection structure for connecting a flexible circuit board and an aluminum bar of the present utility model is that the front surface insulating layer extends and covers the front surface connected to the connection terminal.
The utility model further improves a connecting structure for connecting the flexible circuit board and the aluminum bar, wherein the conductive layer is copper-based, laser welding is adopted between the aluminum bar and the welding surface, and the welding surface is provided with a forceps coating.
The utility model further improves the connecting structure for connecting the flexible circuit board and the aluminum bar, and the front insulating layer extends and covers the front surface connected to the connecting end, and is provided with a laser operation opening for exposing the front surface part of the connecting end.
According to the utility model, the traditional steps of transitional connection of the nickel sheet to the aluminum bar and pasting the nickel sheet to the flexible circuit board by using an SMT technology are eliminated, and the aluminum bar is directly connected to the flexible circuit board by adopting a direct welding mode, so that the installation cost and the installation difficulty of the aluminum bar are reduced. The direct welding structure is respectively provided for the copper-based conductive layer and the aluminum-based conductive layer, so that the connecting structure has wider application range and more flexible use.
Drawings
Fig. 1 shows a schematic representation of an embodiment of the connection structure of the present utility model.
Detailed Description
The traditional connection of the FPC board and the aluminum bar needs to use an SMT (surface mount technology) paster technology to paste a transition nickel plate for connecting the aluminum bar on the FPC board, and then the transition nickel plate is welded on the FPC board by using an FPC reflow soldering technology. The FPC whole process comprises the following steps: cutting, dry film pressing, exposure, D.E.S-AOI-covering film pasting, die pressing and changing, baking, target punching, appearance pasting, FR4 pressing, FR4 baking, OSP-electric measurement, full inspection, SMT-AOI-cleaning, FR4 pasting, dispensing, UV curing, double-sided adhesive pasting, functional test, full inspection and packaging. Wherein, the SMT process needs to adopt FPC reflow soldering technology, and this technology needs specific equipment, and production technology requires high, and manufacturing cost is also higher. Therefore, the utility model provides a connecting structure for connecting the flexible circuit board and the aluminum bar, which omits the traditional steps of transitional connection of the aluminum bar by using the nickel sheet and pasting the nickel sheet to the flexible circuit board by using the SMT technology, directly connects the aluminum bar to the flexible circuit board by adopting a direct welding mode, and reduces the installation cost and the installation difficulty of the aluminum bar. The connection structure for connecting the flexible circuit board and the aluminum bar will be further described with reference to the drawings by way of specific embodiments.
Referring to fig. 1, a connection structure for connecting a flexible circuit board and aluminum bars is shown, wherein the flexible circuit board 1 is manufactured by an SMT-free paster process and comprises a conductive layer and a front insulating layer and a back insulating layer which are covered on the front surface and the back surface of the conductive layer; the connection structure includes: and the connecting end 3 is integrally formed with the conductive layer and extends to the outer side of the flexible circuit board 1, and the reverse surface of the connecting end 3 is exposed to form a welding surface for directly welding the aluminum bar 2. Specifically, the flexible circuit board 1 is separated during the manufacturing process to form the wire connector 11 for connecting the aluminum bar 2, and the wire connector 11 extends outwards to form the connection end 3.
According to the utility model, the traditional steps of transitional connection of the nickel sheet to the aluminum bar and pasting the nickel sheet to the flexible circuit board by using an SMT technology are eliminated, and the aluminum bar is directly connected to the flexible circuit board by adopting a direct welding mode, so that the installation cost and the installation difficulty of the aluminum bar are reduced.
As a preferred embodiment, the conductive layer is copper-based, and correspondingly, the connection end 3 integrally formed with the conductive layer is also copper-based, and ultrasonic welding is performed between the aluminum bar 2 and the welding surface. Preferably, considering that the copper cost is high, the size of the connection end 3 may meet the conductive requirement, and the connection end 3 in this embodiment is rectangular, with a size of 6mm by 6mm, and a thickness of 0.035mm, but because the direct welding connection mode has high requirement on the structural strength of the body to be welded, in order to ensure the structural strength requirement of welding, in this embodiment, the front insulating layer extends and covers the front surface connected to the connection end 3 to form a reinforcing support.
Because ultrasonic welding has high requirements on welding points, welding is difficult. Thus, another preferred embodiment is provided: on the basis of the previous embodiment, nickel is plated on the welding surface, then the welding mode between the aluminum bar 2 and the welding surface is changed into laser welding, and physical isolation is realized through a nickel plating layer so as to avoid electrochemical reaction between copper and aluminum. Preferably, in order to avoid burning the insulating layer covered by the front insulating layer due to laser driving during laser welding, in this embodiment, a laser operation port for exposing the front portion of the connecting end 3 (not all of the front insulating layer is exposed, so as to ensure that the front insulating layer partially covers the connecting end 3 and plays a role of reinforcing and supporting the connecting end 3) is provided on the front insulating layer in advance, and when laser welding is performed, laser is driven from the laser operation port to the front of the connecting end 3, so that the welding surface of the connecting end 3 is welded with aluminum bar.
Although the two embodiments of the copper-based conductive layer can realize the direct welding of the aluminum bar 2 and the connecting end 3, the ultrasonic welding has higher requirements on the welding point, the laser welding needs to be plated with nickel on the welding surface, and a laser operation port needs to be arranged, so that the process is complex. Thus, there is provided yet another preferred embodiment: the conductive layer is aluminum base, and laser welding is performed between the aluminum bar 2 and the welding surface. The copper-based conductive layer is replaced by an aluminum-based conductive layer, so that the connecting end 3 and aluminum are made of the same material, a laser welding mode can be directly adopted, a plating layer is not required to be arranged on a welding surface to avoid electrochemical reaction, and the welding process requirement is reduced. In addition, since aluminum is lighter than copper and has lower cost than copper, the connection terminal 3 in this embodiment is rectangular, with a size of 6mm by 6mm, and a thickness of 1mm, and the thickness is greater than 0.035mm of the copper-based conductive layer under the same length and width. The thicker aluminum-based connecting end can meet the structural strength requirement of welding, so that the front surface of the aluminum-based connecting end 3 can be completely exposed to form an operation surface for laser welding, and the front insulating layer does not need to be extended to cover and open a laser operation opening, thereby further simplifying the production process.
The utility model provides a connection structure for connecting aluminum bars based on a flexible circuit board without SMT (surface mount technology) patches, and the connection of a temperature sensor and a connector connected with the flexible circuit board is not limited, and the connection of the temperature sensor and the flexible circuit board can be realized by adopting a special mounting structure or direct welding connection, and the connection of the connector and the flexible circuit board can be traditional puncture press connection, finger plug connection and the like.
The present utility model has been described in detail with reference to the examples of the drawings, and the embodiments are merely preferred embodiments, and in practice, the present utility model is not limited to the embodiments, and the material of the conductive layer is not limited to the embodiments, and those skilled in the art can make various modifications to the present utility model according to the above-described concept. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the utility model, which is defined by the appended claims.
Claims (8)
1. A connection structure for connecting flexible circuit board and aluminium bar, its characterized in that:
the flexible circuit board is manufactured by an SMT-free paster process and comprises a conductive layer and a front insulating layer and a back insulating layer which are covered on the front surface and the back surface of the conductive layer;
the connection structure includes: and the connecting end is integrally formed with the conductive layer and extends to the outer side of the flexible circuit board, and the back surface of the connecting end is exposed to form a welding surface for directly welding the aluminum bar.
2. The connection structure for connecting a flexible circuit board and an aluminum bar according to claim 1, wherein the conductive layer is aluminum-based, and laser welding is performed between the aluminum bar and the welding surface.
3. The connection structure for connecting a flexible circuit board and an aluminum bar according to claim 2, wherein the thickness of the connection end is larger than that of the connection end when the conductive layer is copper-based, and the strength requirement of laser welding of the connection end and the aluminum bar is met, and the front face of the connection end is completely exposed and forms an operation face for laser welding.
4. A connection structure for connecting a flexible circuit board and an aluminum bar as claimed in claim 3, wherein the thickness of the connection terminal is not less than 1mm.
5. The connection structure for connecting a flexible circuit board and an aluminum bar according to claim 1, wherein the conductive layer is copper-based, and ultrasonic welding is performed between the aluminum bar and the welding surface.
6. The connection structure for connecting a flexible circuit board and an aluminum bar according to claim 5, wherein the front surface insulating layer extends and covers a front surface connected to the connection terminal.
7. The connection structure for connecting a flexible circuit board and an aluminum bar according to claim 1, wherein the conductive layer is copper-based, laser welding is performed between the aluminum bar and the welding surface, and the welding surface is provided with a forceps coating.
8. The connection structure for connecting a flexible circuit board and an aluminum bar according to claim 7, wherein the front insulating layer extends and covers a front surface connected to the connection terminal, and the front insulating layer is provided with a laser operation port for exposing a front surface portion of the connection terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321293392.6U CN219981133U (en) | 2023-05-25 | 2023-05-25 | Connection structure for connecting flexible circuit board and aluminum bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321293392.6U CN219981133U (en) | 2023-05-25 | 2023-05-25 | Connection structure for connecting flexible circuit board and aluminum bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219981133U true CN219981133U (en) | 2023-11-07 |
Family
ID=88587787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321293392.6U Active CN219981133U (en) | 2023-05-25 | 2023-05-25 | Connection structure for connecting flexible circuit board and aluminum bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219981133U (en) |
-
2023
- 2023-05-25 CN CN202321293392.6U patent/CN219981133U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201498636U (en) | Cable connector component | |
| JP2003249204A (en) | Battery | |
| CN201860505U (en) | Combined two-sided PCB | |
| JPWO2006100945A1 (en) | Laminated glass wire connection structure and laminated glass having wire connection structure | |
| CN102480832B (en) | Flexible printed circuit (FPC) | |
| CN212434287U (en) | Connecting wire structure and connecting wire module | |
| CN102340930A (en) | Single-sided circuit board made by gluing flat wires arranged side by side with thermosetting adhesive film | |
| CN219981133U (en) | Connection structure for connecting flexible circuit board and aluminum bar | |
| CN203072249U (en) | Aluminum substrate used for mounting LED lamps | |
| CN219981132U (en) | Connection structure for connecting flexible circuit board and temperature sensor | |
| CN207818728U (en) | Battery modules | |
| JP3510024B2 (en) | Terminal connection part of planar circuit body and method of manufacturing the same | |
| CN215732107U (en) | Copper bar connecting piece with novel voltage sampling points and voltage sampling connecting structure | |
| CN113068297B (en) | FFC structure, production method thereof and power battery connector | |
| CN201556734U (en) | Connector structure | |
| CN211821837U (en) | Long lamp strip assembled by wavy LED short lamp strips | |
| CN210519030U (en) | Aluminum copper plating substrate structure | |
| CN111787682A (en) | Patch pasting board structure and production process | |
| CN220042199U (en) | Battery module and vehicle | |
| CN116390340A (en) | Flexible circuit board structure | |
| CN218603717U (en) | FPC (flexible printed circuit) board of mobile phone | |
| JPH05114392A (en) | Mounting structure of flat type power supply element on circuit board and mounting method thereof | |
| CN2730078Y (en) | Compound multi-layer flexible circuit board structure | |
| CN111828856A (en) | LED lamp strip manufactured by folding circuit board and manufacturing method thereof | |
| CN217064006U (en) | Hearing aid with novel battery electric connection structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |