WO2020024285A1

WO2020024285A1 - Cable-free connection structure and vehicle-mounted charger having same

Info

Publication number: WO2020024285A1
Application number: PCT/CN2018/098629
Authority: WO
Inventors: 罗耀文; 冯颖盈; 姚顺; 刘钧
Original assignee: 深圳威迈斯新能源股份有限公司
Priority date: 2018-08-03
Filing date: 2018-08-03
Publication date: 2020-02-06

Abstract

A cable-free connection structure and a vehicle-mounted charger having same. The cable-free connection structure comprises a housing (1), a circuit board (2) and an external socket (3). One side of the housing (1) is open outward; the circuit board (2) is mounted at the opening, and an electronic component on the circuit board (2) is located in the inner cavity of the housing (1); the external socket (3) passes through and is fixed to a side wall of the housing (1); a plug part (3a) of the external socket (3) faces the outside of the housing (1); soldering pins (3b) of the external socket (3) are located in the inner cavity of the housing (1), penetrate through the circuit board (2) from the inside to the outside, and are soldered to the circuit board (2). Compared with the prior art, the number of connection elements is reduced, connection reliability is improved, costs and hidden troubles are reduced, automation production efficiency is improved, and the structure can be widely applied to vehicle-mounted chargers OBC, voltage converters DCDC and related integrated products.

Description

Cable-free connection structure and vehicle charger with the structure

Technical field

The invention relates to a circuit board, in particular to a cableless connection structure for a circuit board and a vehicle-mounted charger having the structure.

Background technique

With the demand for energy saving and emission reduction, as well as the need to control air pollution, new energy vehicles are gradually commercialized in the market, and electric vehicles are the main force of new energy vehicles. On-board chargers for electric vehicles are an important part of electric vehicles. The existing car charger circuit board and the charger housing are separately manufactured. The external electrical socket of the charger is fixed on the housing. The circuit board is fixed in the inner cavity of the housing and connected to the electrical socket through a cable. The existing cable is connected to the circuit board through a plug, so there is one more contact point and more cables, which increases the number of components, increases costs and hidden troubles, and has low manual assembly efficiency, which is not conducive to automated production.

Therefore, there is an urgent need in the industry to develop a connection structure that can reduce the number of connection components, increase connection reliability, and reduce costs and hidden dangers.

Summary of the invention

The present invention is to solve the above-mentioned problems of the prior art, and proposes a connection structure capable of reducing the number of connection elements, increasing connection reliability, reducing costs and hidden dangers, and a vehicle-mounted charger having the structure.

In order to solve the above technical problems, the technical solution proposed by the present invention is to design a cableless connection structure, which includes a shell, a circuit board and an external socket. One side of the shell is open to the outside, and the circuit board is installed in the open. The electronic component at the mouth is located in the inner cavity of the housing. The external socket passes through and is fixed on the side wall of the housing. The plug part of the external socket faces the outside of the housing. The welding pins of the external socket are located inside the housing. Cavity, and penetrates the circuit board from the inside to the circuit board to be soldered.

A plurality of support posts are provided on the inner side wall of the housing, and screw holes are provided at the ends of the support posts, and the circuit board is fixed on the support posts by screws; the support posts support the circuit board, so that The position is slightly lower than the position of the end of the soldering pin to facilitate soldering the soldering pin to the circuit board.

A fixing base is further provided between the plug-in part and the welding pin in the external socket. The fixing base is provided with a screw hole, and the fixing base is fixedly connected to the casing 1.

The plug-in part is arranged horizontally, and the soldering pin is bent at 90 degrees to the position of the circuit board so as to be soldered on the horizontally arranged circuit board.

A cover plate is also provided on the outside of the circuit board.

The invention also discloses a vehicle-mounted charger, which adopts the aforementioned cableless connection structure.

Compared with the prior art, the present invention reduces the number of connection components, increases connection reliability, reduces costs and hidden dangers, improves automation production efficiency, and can be widely applied to vehicle-mounted charger OBC, voltage converter DCDC, and related integrated products.

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a perspective view of a preferred embodiment of the present invention without a circuit board installed;

2 is a perspective view of a mounted circuit board according to a preferred embodiment of the present invention;

FIG. 3 is a perspective view of an external socket in a preferred embodiment of the present invention.

detailed description

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

The present invention discloses a cableless connection structure. Figures 1 and 2 respectively show a perspective view of an unmounted circuit board and a mounted circuit board of the preferred embodiment. It can be seen from the figure that the connection structure includes a housing 1 Circuit board 2 and external socket 3, one side of the housing is open to the outside, the circuit board is installed at the opening, and the electronic components thereon are in the inner cavity of the housing, and the external socket passes through and It is fixed on the side wall of the shell, the plug portion 3a of the external socket faces the outside of the shell, and the soldering pins 3b of the external socket are located in the inner cavity of the shell and penetrate the circuit board from the inside to the circuit board for welding.

The implementation of this connection structure benefits from the improvement of modern industrial processing accuracy. The dimensions of the casing 1, the circuit board 2, and the external socket 3 are higher and the drilling accuracy is higher. After the three are assembled, the ends of the solder pins 3b just expose a small section of the circuit board, so the structure is convenient for soldering. With reference to FIG. 1 and FIG. 2, the external socket 3 is first fixed on the side wall of the housing 1 when assembling, so that the soldering pin 3b is erected upward; then the circuit board 2 is lowered, and the soldering pin 3b penetrates the circuit board to fix the circuit board. , And then solder the solder pin 3b to the circuit board. The invention eliminates connection cables, reduces costs and hidden dangers, increases connection reliability, and improves automated production efficiency.

Referring to the preferred embodiment shown in FIG. 1, a plurality of support posts 4 are provided on an inner side wall of the housing 1, screw holes are provided at ends of the support posts, and the circuit board 2 is fixed on the support posts by screws. The support column supports the circuit board, so that the position of the circuit board is slightly lower than the position of the end of the solder pin 3b, so as to facilitate soldering the solder pin to the circuit board.

Referring to the preferred embodiment shown in FIG. 3, a fixing base 3c is further provided between the plug portion 3a and the welding pin 3b in the external socket 3, a screw hole 3d is opened on the fixing base, and the fixing base and the housing 1 fixed connection. The plug-in portion 3a is horizontally arranged, and the soldering pin 3b is bent at a position of 90 degrees to the circuit board, so as to facilitate soldering on the horizontally arranged circuit board 2.

In a preferred embodiment, a cover is provided on the outside of the circuit board 2 to protect the circuit board.

The invention also discloses a car charger, which uses the above-mentioned cableless connection structure.

The above embodiments are merely examples, and are not limiting. Any equivalent modification or change made without departing from the spirit and scope of this application shall be included in the scope of claims of this application.

Claims

A cableless connection structure includes a casing (1), a circuit board (2), and an external socket (3), characterized in that one side of the casing faces an external opening, and the circuit board is installed in the opening. The electronic component thereon is located in the inner cavity of the housing, the external socket passes through and is fixed on the side wall of the housing, the plug part (3a) of the external socket faces the outside of the housing, and the solder pins (3b) of the external socket ) Is located in the inner cavity of the shell and penetrates the circuit board from the inside to the circuit board and is soldered.
The cableless connection structure according to claim 1, wherein a plurality of support posts (4) are provided on an inner side wall of the housing (1), and screw holes are provided at ends of the support posts, and The circuit board (2) is fixed on the support post by screws; the support post lifts the circuit board so that the position of the circuit board is slightly lower than the position of the end of the solder pin (3b), so as to facilitate soldering the solder pin On the circuit board.
The cableless connection structure according to claim 1, wherein a fixing seat (3c) is further provided between the plug portion (3a) and the welding pin (3b) in the external socket (3) to fix The seat is provided with a screw hole (3d), and the fixing seat is fixedly connected with the casing (1).
The cableless connection structure according to claim 3, characterized in that: the plug-in portion (3a) is horizontally arranged, and the soldering pin (3b) is bent at 90 degrees to the position of the circuit board, so as to facilitate soldering at a horizontal level Set on the circuit board (2).
The cableless connection structure according to claim 1, wherein a cover plate is further provided on the outside of the circuit board (2).
A vehicle-mounted charger, characterized in that the cableless connection structure according to any one of claims 1 to 5 is used.