WO2021000591A1

WO2021000591A1 - Electronic device fixing board, and structure for connecting circuit board and electronic device

Info

Publication number: WO2021000591A1
Application number: PCT/CN2020/078241
Authority: WO
Inventors: 赵翔; 加布里埃尔·加列戈斯洛佩兹; 张�浩; 李艳波
Original assignee: 精进电动科技股份有限公司
Priority date: 2019-07-01
Filing date: 2020-03-06
Publication date: 2021-01-07
Also published as: CN210694486U

Abstract

Disclosed is an electronic device fixing board comprising a substrate. The bottom surface of the substrate is provided with a fixed mounting portion. The fixed mounting portion is provided with a plurality of protrusions uniformly arranged in a row. Bottom portions of the respective protrusions form electronic device contact surfaces. Each of the electronic device contact surfaces is provided with a plurality of positioning recesses and/or positioning protrusions. The structure enables an electronic device to be snap-fit on an electronic device fixing board, enables an electronic device to have a compact mounting size, enhances strength, and ensures that multiple electronic devices can be installed in a limited space, thereby reducing the total structural volume, and increasing the volumetric power density.

Description

Electronic device fixing board and connection structure of circuit board and electronic device

Technical field

The invention relates to the technical field of electronic devices, in particular to an electronic device fixing board and a connection structure between a circuit board and an electronic device.

Background of the invention

In recent years, with the continuous development of power electronics, both to meet market demand and for technological breakthroughs, the packaging volume of electronic devices such as power devices has also become smaller and smaller. The more extreme volume is pursued, the traditional fixing method needs to be discarded. At present, electronic devices in the non-traditional form of mounting by crimping and fixing have appeared in the market. However, a fixing board for mounting such electronic devices has not been designed. Therefore, there is a need to provide an electronic device fixing board, which can fix and mount the above-mentioned electronic devices, and can minimize the size of the electronic device array, and achieve greater power density per unit volume.

Summary of the invention

In view of the above-mentioned problems, the present invention is proposed to provide an electronic device fixing board and a connection structure between the circuit board and the electronic device that overcomes the above-mentioned problems or at least partially solves the above-mentioned problems, so that the size of multiple electronic device arrays can be achieved Smaller and more compact structure.

One aspect of the present invention provides an electronic device fixing board. The electronic device fixing board includes a substrate, a fixed mounting portion is provided on the bottom surface of the substrate, and a plurality of protrusions are provided on the fixed mounting portion. Distributed in rows, the bottom of each protrusion forms an electronic device contact surface, and each electronic device contact surface is provided with a plurality of positioning grooves and/or positioning protrusions.

Optionally, a reinforced fixing rib is provided on the protrusion at the middle position of the fixed installation part, and two ends of the reinforced fixing rib are provided with fixing holes.

Optionally, the outer sides of the protrusions on the left and right sides of the fixed installation portion are provided with fixing parts extending downward, and the bottom surfaces of the two fixing parts form a fixed contact surface.

Optionally, positioning pins and/or positioning holes are provided on the fixed contact surface.

Optionally, a reinforcing rib is provided on the top of the electronic device fixing plate.

Optionally, the substrate is provided with a circuit board mounting hole at a peripheral position of the fixed mounting portion.

Optionally, there are at least four mounting holes for the circuit board, which are distributed in an array.

Optionally, the electronic device fixing plate is an aluminum die-casting part, and the electronic device is a power device.

Optionally, the fixed contact surface and the bottom surface of the reinforcing fixed rib are on the same plane.

Another aspect of the present invention provides a connection structure between a circuit board and an electronic device, including the electronic device fixing board described in any one of the above, the circuit board is connected to the top of the electronic device fixing board, and the electronic device A number of positioning protrusions and/or positioning grooves are provided on both sides, and the electronic device is crimped on the contact surface of the electronic device through the engagement of the positioning protrusions and/or positioning grooves.

It can be seen from the above that the electronic device fixing board in the technical solution of the present invention includes a substrate, a fixed mounting portion is provided on the bottom surface of the substrate, and a plurality of protrusions are provided on the fixed mounting portion, each of the protrusions being Evenly distributed in rows, the bottom of each protrusion forms an electronic device contact surface, and a plurality of positioning grooves and/or positioning protrusions are provided on each electronic device contact surface. This structure can crimp the electronic device to the electronic device fixing plate, and make the installation size of the electronic device compact, and has better strength, and ensures that multiple electronic devices are installed in a limited space, so that the overall structure volume can be made Smaller, the volume power density can be greater.

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, it can be implemented in accordance with the content of the description, and in order to make the above and other objectives, features and advantages of the present invention more obvious and understandable. In the following, specific embodiments of the present invention are specifically cited.

Brief description of the drawings

Figure 1 shows a three-dimensional structural view of an electronic device fixing plate according to an embodiment of the present invention;

Figure 2 shows a front view of an electronic device fixing plate according to an embodiment of the present invention;

Fig. 3 shows a three-dimensional structure diagram of a power device according to an embodiment of the present invention;

Fig. 4 shows an exploded view of the connection structure between a circuit board and an electronic device according to an embodiment of the present invention;

Fig. 5 shows an assembly schematic diagram of an electronic device fixing plate and a power device according to an embodiment of the present invention.

The reference signs in the figure are as follows: 1. Electronic device contact surface, 2. Fixing hole, 3. Fixed contact surface, 4. Positioning pin, 5. Positioning groove, 6. Substrate, 7. Reinforced fixing rib, 8. Circuit board Mounting hole, 9, electronic device fixing plate, 10, electronic device, 11, circuit board.

Ways to implement the invention

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

The present invention provides a board structure for fixing electronic devices and an application of the board structure. The main idea is to provide an electronic device fixing board, which can crimp multiple electronic devices on the bottom of the fixing board. And further, the electronic device is connected to the circuit board by using the fixing plate, and the above-mentioned overall structure is connected to a certain casing.

As shown in FIGS. 1-3, an electronic device fixing plate 9 is disclosed in an embodiment of the present invention, which can be used to fix a plurality of electronic devices 10 to the circuit board 11, wherein the electronic device fixing plate 9 includes a substrate 6. A fixed mounting portion is provided on the bottom surface of the substrate 6, and a number of protrusions are provided on the fixed mounting portion, each of the protrusions is arranged in a row, and the bottom of each of the protrusions forms an electronic device contact surface 1. A number of positioning grooves 5 and/or positioning protrusions are provided on each contact surface 1 of the electronic device.

Wherein, the substrate 6 in the above-mentioned electronic device fixing plate 9 plays a main supporting role, and a fixed mounting portion is provided at the middle position of the substrate 6 extending downward for fixing a plurality of electronic devices 10. In order to provide sufficient installation space for the electronic device 10 and facilitate heat removal, a number of longitudinally arranged protrusions as shown in FIG. 1 are provided on the fixed installation part, and the bottom surfaces of the plurality of protrusions are used for bonding the electronic components. The two lateral sides of the device thus form the electronic device contact surface 1. In order to realize the snap connection (ie crimping) between the above-mentioned protrusion and the electronic device, a plurality of positioning grooves 5 can be provided on the electronic device contact surface 1. Correspondingly, positioning protrusions should be provided on the side of the electronic device, see Figure 3 for details; or a plurality of positioning protrusions are provided on the contact surface 1 of the electronic device, and accordingly, a plurality of positioning grooves (in the figure Not shown); Of course, the position and shape of the positioning protrusion and the positioning groove may not be specifically limited.

Therefore, in the technical solution disclosed in this embodiment, the positioning protrusion and the positioning groove cooperate with each other, so that the electronic device is crimped and clamped on the fixing plate, and the installation size is compact, and the strength is good, and the Multiple electronic devices are installed in the space, so that the overall structure volume can be made smaller, and the volume power density can be larger.

In an embodiment, a reinforcing fixing rib is provided on the protrusion at the middle position of the fixing mounting portion, and two ends of the reinforcing fixing rib are provided with fixing holes. In this embodiment, as shown in FIG. 1, the reinforcing fixing rib 7 can be arranged at the middle position of the protrusion to maintain the balance of the connection of the electronic device. The arrangement of the reinforcing fixing ribs increases the structural strength of the fixing plate, and by arranging the fixing holes 2 on the reinforcing fixing ribs 7, the fixing plate 9 can be connected and fixed to the shell at the bottom thereof.

In an embodiment, the fixing members extending downward are provided on the outer sides of the protrusions on the left and right sides of the fixing installation portion, and the bottom surfaces of the two fixing members form a fixed contact surface 3.

In this embodiment, referring to Figures 1 or 2, that is, a fixing member is provided at the end position of the substrate 6, which is mainly used to fix the electronic device fixing plate to the bottom housing. Of course, the fixing member can also be used to fix The board is fixed to other positions.

In an embodiment, the fixed contact surface 3 is provided with positioning pins 4 and/or positioning holes. According to Figures 1 and 2, the positioning pins 4 or positioning holes are mainly used to fix the electronic device fixing plate at its bottom; the fixing member 9 and the two outermost protrusions of the fixing mounting part can be connected together to form a step , Wherein the fixed contact surface of the fixing member is located at a lower end position than the contact surface of the electronic device, thereby facilitating the contact with the bottom shell. Of course, the fixing member may not be connected with the protrusion, but may be arranged separately.

In one embodiment, the top of the electronic device fixing plate is provided with reinforcing ribs, thereby further strengthening the strength of the electronic device fixing plate.

In an embodiment, the substrate is provided with circuit board mounting holes 8 at the peripheral position of the fixed mounting portion, and a bolt or other mounting method can be used between them, so as to realize the connection between the fixed board 9 and the circuit board 11.

As a preferred embodiment, there are at least four mounting holes 8 for the circuit board, which are distributed in an array. See FIG. 1, which shows a solution with 6 mounting holes, thereby strengthening the fixing board and the circuit. The strength of the connection between the boards.

In one embodiment, the electronic device fixing plate 9 is an aluminum die-casting part, and the electronic device is a power device. The aluminum die casting is easy to process, low in production cost, high in strength and light in weight, and can ensure the accuracy of processing. The power device is also one of the objects connected and installed in the present invention. Of course, the fixing member can also be made of other processes and materials, and the electronic device can also be of other device types.

In an embodiment, the fixed contact surface 3 and the bottom surface of the reinforcing fixed rib 7 are on the same plane. In order to ensure the strength of the connection between the fixing plate and the bottom shell, in this embodiment, the bottom surface of the reinforced fixing rib is also fixed in contact with the shell.

Another aspect of the present invention provides a connection structure between a circuit board 11 and an electronic device 10, including the electronic device fixing board 9 described in any one of the above, and the circuit board is connected to the top of the electronic device fixing board 9, and Positioning protrusions and/or positioning grooves are correspondingly provided on both sides of the electronic device 10, and the positioning protrusions and/or positioning grooves of the electronic device are engaged with the positioning grooves and/or the positioning grooves at the bottom of the electronic device fixing plate 9 Or on the positioning protrusion, and the upper surface thereof abuts against the contact surface of the electronic device. Thus, the connection of the electronic device, the electronic device fixing board and the circuit board is realized.

In summary, the embodiment of the present invention discloses an electronic device fixing board, which includes a base plate. The bottom surface of the base plate is provided with a fixed mounting part, and the fixed mounting part is provided with a number of protrusions, and each protrusion is uniformly arranged. Distributed, the bottom of each protrusion forms an electronic device contact surface, and a number of positioning grooves and/or positioning protrusions are provided on the contact surface of each electronic device. This structure can crimp the electronic device to the electronic device fixing plate, and make the installation size of the electronic device compact, and has better strength, and ensures that multiple electronic devices are installed in a limited space, so that the overall structure volume can be made Smaller, the volume power density can be greater.

The above are only specific embodiments of the present invention. Under the above teaching of the present invention, those skilled in the art can make other improvements or modifications on the basis of the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the purpose of the present invention, and the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

An electronic device fixing board, characterized in that the electronic device fixing board includes a base plate, a fixed mounting portion is provided on the bottom surface of the base plate, and a plurality of protrusions are provided on the fixed mounting portion. Distributed in rows, the bottom of each protrusion forms an electronic device contact surface, and each electronic device contact surface is provided with a plurality of positioning grooves and/or positioning protrusions.
The electronic device fixing board according to claim 1, wherein a reinforcing fixing rib is provided on the protrusion in the middle position of the fixing mounting portion, and two ends of the reinforcing fixing rib are provided with fixing holes.
3. The electronic device fixing board according to claim 2, wherein the fixing members extending downward are provided on the outer sides of the protrusions on the left and right sides of the fixing mounting portion, and the bottom surfaces of the two fixing members form a fixed contact surface.
The electronic device fixing board according to claim 3, wherein the fixing contact surface is provided with positioning pins and/or positioning holes.
The electronic device fixing board according to claim 1, wherein the top of the electronic device fixing board is provided with reinforcing ribs.
The electronic device fixing board according to claim 1, wherein the substrate is provided with a circuit board mounting hole at a peripheral position of the fixing mounting portion.
The electronic device fixing board according to claim 6, wherein there are at least four mounting holes for the circuit board, distributed in an array.
The electronic device fixing plate according to claim 1, wherein the electronic device fixing plate is an aluminum die-casting part, and the electronic device is a power device.
The electronic device fixing board according to claim 3, wherein the fixed contact surface and the bottom surface of the reinforcing fixing rib are on the same plane.
A connection structure between a circuit board and an electronic device, comprising the electronic device fixing board according to any one of claims 1-9, wherein the circuit board is connected to the top of the electronic device fixing board, and the electronic device A number of positioning protrusions and/or positioning grooves are provided on both sides of the device, and the electronic device is crimped on the contact surface of the electronic device through the engagement of the positioning protrusions and/or positioning grooves.