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A closed positioning insert injection molding laminated copper bar and its manufacturing method

An insert injection molding and closed technology, which is applied in the field of copper bar manufacturing, can solve the problems of safety risks, exposure, and influence on product safety performance, and achieve the effect of improving electrical safety performance and ensuring safety performance

Active Publication Date: 2021-05-28
宁波峰梅新能源汽车科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing fixed laminated copper bars are mainly divided into two types. One is the integral laminated copper bars that require integral mold opening and crimping. It is not easy to change, and the thickness of the copper bars used is limited. The other is to fix the bus bars together by bonding, but the manufacturing cost is relatively high
For this reason, in the Chinese utility model patent with the publication number CN204030501U, a laminated busbar is disclosed, which superimposes the copper bars together by screws, and isolates the copper bars from the copper bars by insulating rings, although the scheme The cost is low, but the copper bar is exposed as a whole, which poses a safety risk, so injection molding is required on the surface of the laminated copper bar
[0003] When the existing laminated copper bars are injection molded, there are mainly two methods for positioning: one is to connect the two copper bars together with glue, and after the injection layer is wrapped, the glue area is a heterogeneous area, which is easy to overlap The electrical properties and structural strength of the laminated copper bars are affected; the other is only positioned through the mounting holes at the ends of the laminated copper bars
During insert injection molding, under the injection pressure, the middle area of ​​the laminated copper bars is prone to bending or displacement, which not only leads to uneven spacing of the laminated copper bars, but also the wall thickness of the injection molding layer outside the copper bars cannot be guaranteed, resulting in the failure of the laminated copper bars. The withstand voltage cannot meet the requirements, seriously affecting product safety performance

Method used

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  • A closed positioning insert injection molding laminated copper bar and its manufacturing method
  • A closed positioning insert injection molding laminated copper bar and its manufacturing method
  • A closed positioning insert injection molding laminated copper bar and its manufacturing method

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Such as figure 1 As shown, the closed-positioned insert injection-molded laminated copper bar in this embodiment includes an insert 1 and an injection molding layer 2 , and the insert 1 includes a first copper bar 3 and a second copper bar 4 stacked in gaps. combine figure 2 As shown, the first copper bar 3 includes a first connecting piece 31, a plurality of first connection terminals 33 are arranged on the first connecting piece 31, a first extension plate 32 is bent on the first connecting piece 31, the first A plurality of first connection terminals 33 are disposed on the extension board 32 . The second copper bar 4 includes a second connecting piece 41, a plurality of second connection terminals 43 are arranged on the second connecting piece 41, and a second extending plate 42 is bent on the second connecting piece 41, and a second extending plate 42 is arranged on the second extending plate 42. A second connection terminal 43 is provided. combine Image 6 As ...

Embodiment 2

[0045] This embodiment is different from Embodiment 1 in that, as Figure 7 As shown, in this embodiment, the first connecting member 31 is provided with five first positioning holes 5 whose centers of circles lie on a straight line, and the first positioning holes 5 are arranged in the middle area of ​​the first connecting member 31 . The middle area of ​​the second connecting member 41 is provided with six second positioning holes 6 whose centers are located on a straight line. When the first copper bar 3 and the second copper bar 4 are stacked on each other, the orthographic projection of the first positioning hole 5 on the front surface of the second copper bar 4 and the second positioning hole 6 are distributed on a straight line.

Embodiment 3

[0047] This embodiment is different from Embodiment 1 in that, as Figure 8 As shown, in this embodiment, the first copper bar 3 only includes a first connecting piece 31 , and a plurality of first connection terminals 33 are arranged on the first connecting piece 31 . The second copper bar 4 only includes a second connecting piece 41 , and a plurality of second connection terminals 43 are arranged on the second connecting piece 41 .

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Abstract

The invention discloses a closed positioning insert injection molding laminated copper bar, which includes an insert and an injection layer, the insert includes a first copper bar and a second copper bar, and the first copper bar includes a first connecting piece , the second copper bar includes a second connector, the first connector is provided with a plurality of first positioning holes for the second positioning rod on the mold to pass through, and the second connector is provided with a plurality of holes for the second positioning rod to pass through. The second positioning hole through which the first positioning rod on the mold passes, the first positioning hole and the second positioning hole are misaligned, and the injection molding layer wraps the first connecting piece and the second connecting piece, and fills the gap space between them . In the present invention, positioning holes are added on the surface of the copper bar, and the first positioning rod and the second positioning rod pass through the positioning hole on one copper bar from both sides of the laminated copper bar to offset the surface of the other copper bar to realize the insertion The fixation makes the spacing between the laminated copper bars evenly distributed, and the middle area of ​​the laminated copper bars is evenly stressed, and it is not easy to bend or shift.

Description

technical field [0001] The invention relates to the technical field of copper bar manufacturing, in particular to a closed and positioned insert injection molded laminated copper bar. Background technique [0002] The existing fixed laminated copper bars are mainly divided into two types. One is the integral laminated copper bars that require integral mold opening and crimping. It is not easy to change, and the thickness of the copper bars used is limited. The other is to fix the bus bars together by bonding, but the manufacturing cost is relatively high. For this reason, in the Chinese utility model patent with the publication number CN204030501U, a laminated busbar is disclosed, which superimposes the copper bars together by screws, and isolates the copper bars from the copper bars by insulating rings, although the scheme The cost is low, but the copper bar is exposed as a whole, which poses a safety risk, so injection molding is required on the surface of the laminated c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/14B29C45/00B29L31/36
CPCB29C45/0055B29C45/14008B29C45/14065B29L2031/36
Inventor 俞通吴洪强周国清贾红军
Owner 宁波峰梅新能源汽车科技股份有限公司