JP2018125906A - Power converter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a down-sized power converter.SOLUTION: A power converter (10) comprises: a support member (20) including a first surface (21a) and a second surface (21b) that is the back surface of the first surface (21a); a first electronic component (12) fixed on the first surface (21a) of the support member (20); and a second electronic component (13) fixed on the second surface (21b) of the support member (20). The first electronic component (12) is fixed through first fixing members (31) on first bosses (23) protruding from the first surface (21a) toward the second electronic component (13). The second electronic component (13) is fixed through second fixing members (32) on second bosses (24) protruding from the second surface (21b) toward the second electronic component (13), and is positioned at the predetermined position by the first bosses (23).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power conversion device in which a first electronic component and a second electronic component are supported by a support member.

  A hybrid vehicle driven by an engine and a motor is equipped with a power control unit for the purpose of controlling the rotational speed of the motor. In such a power conversion device, many electronic components are supported by a support member. As a conventional technique related to such a power converter, there is a technique disclosed in Patent Document 1.

  In the power conversion device disclosed in Patent Literature 1, an electronic circuit board and a power module are supported by a support member. Both surfaces of the support member are covered with a cover. Each component is fixed to the support member with screws.

JP 2009-159767 A

  According to the electric power device disclosed in Patent Literature 1, the screw head portion of the screw fixing the circuit board projects beyond the general surface of the circuit board. It is necessary to arrange other electronic components apart from each other by the protruding amount. The power converter becomes larger by the size of the gap. The power conversion device needs to be mounted in a limited mounting space of the vehicle. If the power converter can be reduced in size, the degree of freedom in arrangement is increased, which is preferable.

  An object of the present invention is to provide a miniaturized power conversion device.

According to the first aspect of the present invention, the supporting member having the first surface and the second surface which is the back surface of the first surface, and the first electrons fixed to the first surface of the supporting member. A power conversion device having a component and a second electronic component fixed to the second surface of the support member,
The first electronic component is fixed to a first boss protruding along the second electronic component from the first surface via a first fixing member,
The second electronic component is fixed to a second boss projecting from the second surface toward the second electronic component via a second fixing member, and by the first boss Provided is a power converter characterized in that it is positioned.

  In the invention concerning Claim 1, the 1st electronic component and the 2nd electronic component are being fixed to both surfaces of the supporting member. For this reason, each electronic component can be arrange | positioned irrespective of the protrusion amount of a fixing member. Thereby, a power converter device can be reduced in size.

  Furthermore, the first electronic component is fixed to the first boss protruding along the second electronic component from the first surface of the support member via the first fixing member. The second electronic component is positioned at a predetermined site by the first boss. That is, the first boss formed to fix the first electronic component serves as a positioning member for the second electronic component disposed on the back surface. Since the second electronic component can be disposed close to the first boss, the support member can be reduced in size as compared with the case where the second electronic component is provided apart from the first boss. By downsizing the support member, the power converter can be downsized.

It is a figure explaining the power converter device by Example 1 of this invention. It is a figure explaining the power converter device by Example 2 of this invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the description, the top and bottom refer to the top and bottom with reference to the drawings.
<Example 1>

  Please refer to FIG. 1 (a) and FIG. 1 (b). Fig.1 (a) is the figure of the state which looked at the power converter device 10 by this invention from the upper direction. FIG. 1B is a cross-sectional view taken along line 1b-1b of FIG.

  The power conversion device 10 is configured by housing a plurality of electronic components 12 and 13 in a housing 11.

  The casing 11 includes a support member 20 that is disposed in the center and supports the electronic components 12 and 13, a lower case 16 that covers the lower portion of the support member 20, and an upper case that covers the upper portion of the support member 20. 17. The support member 20 serves as a main body of the housing 11 and can also be referred to as a middle case sandwiched between the upper case 17 and the lower case 16.

  The upper case 17 and the lower case 16 are each fixed to the support member 20 via screws 18.

  The support member 20 is a rectangular plate-shaped electronic component placement portion 21 in which the electronic components 12 and 13 are placed on both sides, and extends vertically from the periphery of the electronic component placement portion 21 to cover the sides of the electronic components 12 and 13. And a wall portion 22.

  In the vicinity of the four corners of the electronic component placement portion 21, a first boss 23 protrudes upward. A second boss 24 protrudes upward at two locations between the adjacent first bosses 23 of the electronic component placement portion 21.

  The first boss 23 and the second boss 24 protrude from the same surface of the support member 20 in the same direction. For this reason, the lower surface 21a of the electronic component arrangement | positioning part 21 is formed in substantially planar shape.

  A plurality of positioning protrusions 22 a for positioning the electronic components 12 and 13 are formed from the wall portion 22 toward the electronic components 12 and 13.

  For example, the electronic component 12 arranged on the lower surface 21a (first surface 21a) of the electronic component arrangement unit 21 is a power module. The electronic component 12 arranged on the lower surface 21a of the electronic component arrangement unit 21 is appropriately referred to as “first electronic component 12”.

  For example, the electronic component 13 arranged on the upper surface 21b (second surface 21b) of the electronic component arrangement unit 21 is a capacitor. The electronic component 13 arranged on the upper surface 21b of the electronic component arrangement unit 21 is appropriately referred to as “second electronic component 13”.

  The electronic components 12 and 13 are not limited to power modules and capacitors. Arbitrary electronic components such as a reactor and a DCDC converter can be selected.

  The first electronic component 12 has a first fixing portion 12 a for fixing to the electronic component placement portion 21. The first fixing portion 12a is overlaid on the first boss 23 and fixed to the electronic component placement portion 21 by a first screw 31 (first fixing member 31).

  The second electronic component 13 has a second fixing portion 13 a for fixing to the electronic component arranging portion 21. The second fixing portion 13a is overlaid on the second boss 24 and fixed to the electronic component placement portion 21 by a second screw 32 (second fixing member 32).

  In addition, the fixing member for fixing the electronic components 12 and 13 to the support member 20 can employ | adopt arbitrary components, such as a volt | bolt, besides a screw.

  The first boss 23 is substantially D-shaped with reference to the state where the electronic component placement portion 21 is viewed from the upper surface 21b (second surface 21b). The 1st boss | hub 23 consists of the linear linear part 23a and the circular-shaped part 23b which connects the both ends of this linear part 23a in circular arc shape.

  The second electronic component 13 is disposed along the straight line portion 23a. The first boss 23 is disposed along a wider range of the second electronic component 13 by having the straight portion 23a. As a result, the second electronic component 13 is more accurately arranged.

  The present invention described above has the following effects.

  Electronic components 12 and 13 are fixed to both surfaces 21a and 21b of the support member 20, respectively. For this reason, each electronic component 12 and 13 can be arrange | positioned irrespective of the protrusion amount of the screw head of the screws 31 and 32. FIG. Thereby, the power converter device 10 can be reduced in size.

Further, the first electronic component 12 is fixed to the first boss 23 that protrudes along the second electronic component 13 from the lower surface 21 a (first surface 21 a) of the support member 20 via the first screw 31. Has been. The second electronic component 13 is positioned at a predetermined site by the first boss 23. That is, the first boss 23 formed to fix the first electronic component 12 serves as a positioning member for the second electronic component 13 disposed on the back surface. Since the second electronic component 13 can be disposed close to the first boss 23, the support member 20 can be reduced in size compared to the case where the second electronic component 13 is provided apart. By reducing the size of the support member 20, the power conversion device 10 can be reduced in size.
<Example 2>

  Next, a second embodiment of the present invention will be described with reference to the drawings. About the part which is common in Example 1, while using a code | symbol, detailed description is abbreviate | omitted.

  Please refer to FIG. The second electronic component 13 is placed on the bottom surface of the first boss 23 formed in a bottomed cylindrical shape. Thereby, the second electronic component 13 is positioned in the height direction.

  Even in the power conversion apparatus 10A according to the second embodiment, the predetermined effect of the present invention can be obtained.

  Furthermore, according to the power conversion device 10 </ b> A according to the second embodiment, the effect of vibration suppression can be expected by applying the second electronic component 13 to the bottom surface of the first boss 23.

  In addition, the power converter device by this invention can be mounted in other vehicles other than a four-wheeled vehicle. That is, the present invention is not limited to the examples as long as the operations and effects of the present invention are exhibited.

  The power converter of the present invention is suitable for a four-wheeled vehicle.

DESCRIPTION OF SYMBOLS 10, 10A ... Power converter 12 ... 1st electronic component 13 ... 2nd electronic component 20 ... Support member 21a ... Lower surface (1st surface)
21b ... Upper surface (second surface)
23 ... 1st boss 24 ... 2nd boss 31 ... 1st screw (1st fixing member)
32 ... Second screw (second fixing member)

Claims (1)

A support member having a first surface and a second surface which is the back surface of the first surface, a first electronic component fixed to the first surface of the support member, and a second of the support member A second electronic component fixed to the surface of the power conversion device,
The first electronic component is fixed to a first boss protruding along the second electronic component from the first surface via a first fixing member,
The second electronic component is fixed to a second boss projecting from the second surface toward the second electronic component via a second fixing member, and by the first boss A power converter characterized by being positioned.

Images