CN209948091U

CN209948091U - Flexible copper bar and charging device

Info

Publication number: CN209948091U
Application number: CN201920758247.8U
Authority: CN
Inventors: 刘钧; 冯颖盈; 姚顺; 罗耀文
Original assignee: Shenzhen Weimei New Energy Co Ltd
Current assignee: Shenzhen Weimei New Energy Co Ltd; Shenzhen VMAX New Energy Co Ltd
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-01-14
Anticipated expiration: 2029-05-23

Abstract

The utility model provides a flexible copper bar and charging device. The flexible copper bar comprises a plurality of first copper sheets which are sequentially stacked, the first copper sheets comprise a first hard connection area, a soft connection area and a second hard connection area which are sequentially arranged, the first hard connection areas of the first copper sheets are welded with one another to form a first hard connection part, the second hard connection areas of the first copper sheets are welded with one another to form a second hard connection part, and the first copper sheets are only connected with the first hard connection areas and the second hard connection areas. The utility model discloses a flexible connection region can extend in the certain limit or the characteristic of shrink absorbs the assembly error that product machining precision caused, guarantees that the copper bar is fixed stable, reliable on the circuit board to have good anti-vibration effect.

Description

Flexible copper bar and charging device

Technical Field

The utility model relates to an electric connector field, in particular to flexible copper bar and charging device.

Background

With the requirements of energy conservation and emission reduction and air pollution control, new energy automobiles are gradually commercialized in the market, and electric automobiles are more the main force of the new energy automobiles. Electric vehicles are further classified into pure electric vehicles and hybrid electric vehicles, wherein a vehicle-mounted charger OBC, a voltage converter DCDC and a high-voltage power distribution PDU are important components of the electric vehicles. In the existing solution, devices of the vehicle-mounted charger OBC, the voltage converter DCDC and the high-voltage power distribution PDU related integrated product are connected by cables or hard copper bars, the cables are flexible and cannot be shaped and pre-positioned, the wiring terminals and the fixed terminals need to be manually positioned, manpower is wasted, and the risk of equipment ablation due to wrong connection of polarities exists; the hard copper bar can not effectively absorb assembly errors caused by the machining precision of products, and the fault hidden troubles of overlarge installation gravitation, deformation or overhigh temperature rise of a lap joint point and the like exist. Therefore, there is a need in the art to develop a flexible copper bar connection scheme that can reduce the number of connection components, increase connection reliability, and reduce cost and potential failure.

SUMMERY OF THE UTILITY MODEL

The utility model provides a flexible copper bar and charging device to solve above-mentioned problem.

In order to solve the above problem, as an aspect of the present invention, there is provided a flexible copper bar, including: the first copper sheets comprise first hard connection areas, soft connection areas and second hard connection areas which are sequentially arranged in a stacked mode, the first hard connection areas of the first copper sheets are welded with one another to form first hard connection portions, the second hard connection areas of the first copper sheets are welded with one another to form second hard connection portions, and the first copper sheets are only connected with one another in the first hard connection areas and the second hard connection areas.

Preferably, one or more second copper sheets matched with the shape of the first hard connection area are welded on the outer side of the first hard connection area of the outermost one of the first copper sheets.

Preferably, the first hard connection region is formed into a predetermined first terminal shape by punching.

Preferably, the first terminal is U-shaped, and the first arm of the U-shape and the second arm of the U-shape are bent to be perpendicular to each other.

Preferably, the first arm and the second arm are both provided with mounting through holes.

Preferably, the second hard connection area is provided with a mounting through hole.

The utility model also provides a charging device, including foretell flexible copper bar.

The utility model discloses a flexible connection region can extend in the certain limit or the characteristic of shrink absorbs the assembly error that product machining precision caused, guarantees that the copper bar is fixed stable, reliable on the circuit board to have good anti-vibration effect.

Drawings

Fig. 1 schematically illustrates a schematic perspective view of a flexible copper bar in the present invention;

fig. 2 schematically shows a combined principle view of flexible copper bars;

FIG. 3 schematically illustrates a schematic view after the flexible copper bar is welded and bonded;

fig. 4 schematically illustrates a schematic view of the flexible copper bar after stamping;

fig. 5 schematically shows an application diagram of the flexible copper bar.

Reference numbers in the figures: 1. a first copper sheet; 2. a first hard-wired region; 3. a soft connection region; 4. a second hard-wired region; 5. a first hard connection portion; 6. a second hard connection portion; 7. a second copper sheet; 8. a first arm; 9. a second arm; 10. a circuit board; 11. a relay; 12. a copper bar assembly; 13. a flexible copper bar.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

The utility model discloses an aspect provides a flexible copper bar, is applicable to pure electronic, the mixed automobile technique of charging and voltage transformation field, and concretely relates to on-vehicle machine OBC that charges, voltage converter DCDC, high voltage distribution PDU and the soft copper bar of relevant integrated product are connected.

This flexible copper bar includes: the first copper sheets 1 are sequentially stacked, each first copper sheet 1 comprises a first hard connection area 2, a soft connection area 3 and a second hard connection area 4, the first hard connection areas of the first copper sheets 1 are welded to form a first hard connection portion 5, the second hard connection areas of the first copper sheets 1 are welded to form a second hard connection portion 6, and the first copper sheets 1 are connected with each other only in the first hard connection areas 2 and the second hard connection areas 4. For example, the thickness of the first copper sheet 1 is 0.1 MM.

In the technical scheme, after a plurality of first copper sheets 1 with the thickness of 0.1mm are overlapped together, two ends of the first copper sheets are respectively welded together through molecular diffusion, so that a first hard connection area 2 and a second hard connection area 4 with strong hardness are formed at the two ends, and the middle of the first copper sheets is not welded and fused, so that the first copper sheets have good flexibility and can be bent up and down to form a soft connection area 3.

When the relay is used, as shown in fig. 5, the flexible copper bar spans the relay, the hard connection area on one side is fixedly installed with the copper bar assembly, and the hard connection area on the other side is fixedly installed with the circuit board. Because the middle area of flexible copper bar is the flexible connection region, has good flexibility, consequently, can extend or the characteristic of shrink in certain extent through the flexible connection region absorbs the assembly error that product machining precision caused, guarantees that the copper bar is fixed stably, reliably on the circuit board to have good anti-seismic effect.

Preferably, one or more second copper sheets 7 matched with the shape of the first hard connection area 2 are welded on the outer side of the first hard connection area 2 of the first copper sheet 1 at the outermost layer. The thickness of the second copper sheet 7 is, for example, 0.1 MM.

Preferably, the first hard connection region 2 is formed into a predetermined first terminal shape by punching.

Preferably, the first terminal is U-shaped, and the first arm 8 and the second arm 9 of the U-shape are bent to be perpendicular to each other.

Preferably, the first arm 8 and the second arm 9 are provided with mounting through holes.

Preferably, the second hard connection region 4 is provided with a mounting through hole.

The hard connection area in the utility model is that the copper bar is connected with the device mounting point, which ensures the stable and reliable contact; the assembly error that the product machining precision caused can be absorbed in the soft connection region, avoids appearing that installation gravitation is too big, and the trouble hidden danger such as deformation or overlap joint point temperature rise is too high to the soft connection region can be according to actual current-carrying capacity requirement, and the local reduction or increase copper bar sectional area reduce the processing cost, thereby improves production efficiency, reduction in production cost, quality assurance ability, has satisfied trade development requirement.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible copper bar, comprising: the copper sheet comprises a plurality of first copper sheets (1) which are sequentially stacked, wherein the first copper sheets (1) comprise a first hard connection area (2), a soft connection area (3) and a second hard connection area (4) which are sequentially arranged, the first hard connection areas of the first copper sheets (1) are welded with each other to form a first hard connection part (5), the second hard connection areas of the first copper sheets (1) are welded with each other to form a second hard connection part (6), and the first copper sheets (1) are only connected with each other in the first hard connection area (2) and the second hard connection area (4).

2. Flexible copper bar according to claim 1, characterised in that the outermost one of the first copper sheets (1) has welded to its outside of the first hard connection area (2) one or more second copper sheets (7) matching the shape of the first hard connection area (2).

3. Flexible copper busbar according to claim 1, wherein the first hard connection area (2) is stamped and formed into a predetermined first terminal shape.

4. Flexible copper bar according to claim 3, characterized in that the first terminal is U-shaped, and the first arm (8) and the second arm (9) of the U-shape are bent into a mutually perpendicular state.

5. Flexible copper bar according to claim 4, characterised in that the first arm (8) and the second arm (9) are each provided with a mounting through hole.

6. The flexible copper busbar according to claim 1, wherein the second hard connecting area (4) is provided with a mounting through hole.

7. A charging device comprising the flexible copper busbar of any one of claims 1 to 6.