WO2021102807A1

WO2021102807A1 - Novel electric welding machine

Info

Publication number: WO2021102807A1
Application number: PCT/CN2019/121634
Authority: WO
Inventors: 狄原震
Original assignee: 狄原震
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2021-06-03

Abstract

An electric welding machine, comprising: a housing (1) having thermally conductive performance; and a circuit board (6), mounted in the housing (1). The circuit board (6) is provided with a low-voltage component side and a high-voltage component side, the low-voltage component side is at least provided with one low-voltage component (2) packaged by a thermally conductive insulating shell (3), and the high-voltage component side is at least provided with one high-voltage component (5); the thermally conductive insulating shell (3) is in contact fit with an inner wall surface of the housing (1); the high-voltage component (5) is fixed on a heat sink (4) on the circuit board (6). The low-voltage component (2) is packaged by the thermally conductive insulating shell (3), thereby avoiding the safety problem of electric leakage or the like, and then the packaged low-voltage component (2) is fixed on the aluminum profile housing (1), thereby realizing a better heat dissipation effect. Moreover, compared with conventional aluminum profile heat sink designs mounted on circuit boards, it is not required to use the aluminum profile heat sinks, thereby reducing the loss of aluminum profiles; moreover, the heat is dissipated by means of the aluminum profile housing (1), so that heat dissipation of the high-voltage component (5) by means of the aluminum profile heat sink is also facilitated, thereby improving the heat dissipation effect.

Description

New electric welding machine

Technical field

The utility model relates to a packaging structure of internal components of an electric welding machine, in particular to a new electric welding machine.

Background technique

The packaging structure of the existing electric welding machine is as follows:

chassis;

A circuit board is set in the casing, and aluminum heat sinks, low-voltage components, high-voltage components are set on the circuit board, and the pins of low-voltage components and high-voltage components are connected to the circuit board. The low-voltage components, high-voltage components and the aluminum profile are in contact with each other. Heat dissipation of low-voltage components and high-voltage components. The disadvantage of this packaging structure is that low-voltage components and high-voltage components require relatively independent aluminum heat sinks, which increases the amount of aluminum consumables. At the same time, the limited space in the case also affects the overall heat dissipation effect.

Summary of the invention

Aiming at the shortcomings of the prior art, the utility model provides a new type of electric welding machine. Low-voltage components are encapsulated by a heat-conducting insulating shell without any safety problems such as electric leakage. The utility model is fixed on an aluminum profile shell with better heat dissipation effect. Compared with the traditional aluminum profile heat sink design installed on the circuit board, the aluminum profile heat sink is not required, which reduces the loss of the aluminum profile. At the same time, because its heat is dissipated through the aluminum profile shell, it also helps high-voltage components pass through The aluminum heat sink can dissipate heat and improve the heat dissipation effect.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a new electric welding machine, including:

Shell with thermal conductivity;

The circuit board is installed in the casing. The circuit board has a low-voltage component side and a high-voltage component side. The low-voltage component side is equipped with at least one low-voltage component encapsulated by a thermally conductive insulating shell, and the high-voltage component side is installed with at least one high-voltage component and a thermally conductive insulating shell. In contact with the inner wall surface of the casing, the high-voltage component is fixed on the heat sink on the circuit board.

On the basis of the above solution, preferably, the heat sink is an aluminum heat sink.

On the basis of the above solution, preferably, the shell is an aluminum profile shell.

On the basis of the above solution, as a preference, the low-voltage component is a fast recovery diode.

Based on the above solution, preferably, the high-voltage element is an IGBT.

Compared with the prior art, the beneficial effects of this utility model are:

1. Low-voltage components are encapsulated by a thermally conductive and insulating shell, so there will be no safety issues such as leakage.

2. The low-voltage components are encapsulated by a thermally conductive insulating shell and then fixed on the aluminum profile shell. The heat dissipation effect is better. Compared with the traditional aluminum profile heat sink design installed on the circuit board, the aluminum profile heat sink is not required. The loss of the aluminum profile is reduced, and at the same time, because the heat is dissipated through the aluminum profile shell, it also helps the high-voltage components to dissipate heat through the aluminum profile heat sink to improve the heat dissipation effect.

3. The design of aluminum heat sink has good heat dissipation performance.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the utility model.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all implementations. example. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present utility model.

Please refer to Figure 1, the new electric welding machine, including:

Shell 1 with thermal conductivity;

The circuit board 6 is installed in the casing. The circuit board has a low-voltage component side and a high-voltage component side. The low-voltage component side is equipped with at least one low-voltage component 2 enclosed by a thermally conductive insulating shell 3, and the high-voltage component side is equipped with at least one high-voltage component 5 , The heat-conducting insulating shell is in contact with the inner wall surface of the shell, and the high-voltage component is fixed on the heat sink 4 on the circuit board.

In the above solution, because the high-voltage components such as the electronic switch (IGBT) housing has high voltage, an independent aluminum heat sink is required to dissipate heat. The low-voltage components such as fast recovery diodes are encapsulated by a thermally conductive insulating housing. Only the pins are charged and the pins are fixed. On the circuit board, the thermally conductive insulating shell is fixed on the inner wall of the aluminum profile shell. Because it is a low-voltage component, it is encapsulated by the thermally conductive insulating shell, so there will be no safety problems such as leakage. At the same time, because it is fixed on the aluminum profile shell, The heat dissipation effect is better, and compared to the traditional aluminum heat sink design installed on the circuit board, the aluminum heat sink is not required, which reduces the loss of the aluminum profile. At the same time, because the heat is dissipated through the aluminum profile shell, It also helps high-voltage components to dissipate heat through the aluminum heat sink to improve the heat dissipation effect.

For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended to fall on the rights. All the changes in the meaning and scope of the required equivalent elements are included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

The new electric welding machine is characterized in that it includes:

Shell with thermal conductivity;

The circuit board is installed in the casing. The circuit board has a low-voltage component side and a high-voltage component side. The low-voltage component side is equipped with at least one low-voltage component enclosed by a thermally conductive insulating shell, and the high-voltage component side is installed with at least one high-voltage component and a thermally conductive insulating shell. In contact with the inner wall surface of the casing, the high-voltage component is fixed on the heat sink on the circuit board.
The new electric welding machine according to claim 1, wherein the heat sink is an aluminum heat sink.
The new electric welding machine according to claim 1, wherein the shell is an aluminum profile shell.
The new electric welding machine according to claim 1, wherein the low voltage component is a fast recovery diode.
The new electric welding machine according to claim 1, wherein the high-voltage component is an IGBT.