CN217508442U

CN217508442U - Heat dissipation device for integrated motor

Info

Publication number: CN217508442U
Application number: CN202220545987.5U
Authority: CN
Inventors: 赵鹏; 陈文君; 张�荣; 程亿; 陈威
Original assignee: Shanghai Anpu Mingzhi Automation Equipment Co ltd
Current assignee: Shanghai Anpu Mingzhi Automation Equipment Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-09-27
Anticipated expiration: 2032-03-14

Abstract

The utility model relates to a heat abstractor for integrated form motor, integrated form motor includes motor body, support, drive plate and back lid, heat abstractor includes the fin, be equipped with power tube, pad and copper foil on the drive plate, the pad is located the inboard of drive plate, the power tube is pasted on the pad, the copper foil is located the outside of drive plate, the fin is located between copper foil and the back lid. Compared with the prior art, the utility model has the advantages of increase the radiating effect, reduce the temperature rise, the motor can long-time operation.

Description

Heat dissipation device for integrated motor

Technical Field

The utility model relates to an integrated form motor especially relates to a heat abstractor for integrated form motor.

Background

The heat dissipation of current integrated form motor has following problem:

1) the integrated motor integrates a motor body and a driver, and comprises or does not comprise position feedback and the like, and because the integrated motor is small in size, heat dissipation is a big problem.

2) The motor is the largest heat source, the integral temperature basis of the integrated motor is also formed, the power device, the power module and the like on the driving plate are the second largest heat source, and the heat of the second largest heat source is superposed on the temperature formed by the heat of the motor, so that the heat dissipation of the position of the driving plate is more difficult.

3) In the prior art, the power switch device is attached to the outer side of the driving plate, and a plastic part is arranged between the heat source and the rear cover, so that the radiating fins cannot be effectively filled, and the heat conduction effect is insufficient; the heat radiation effect is poor because the back cover conducts heat outwards by means of heat radiation or approach.

4) In the past, the heat dissipation ribs and the rear cover are integrally designed, and the application is inconvenient.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a heat dissipation device for an integrated motor, which overcomes the above-mentioned drawbacks of the prior art.

The purpose of the utility model can be realized through the following technical scheme:

according to an aspect of the utility model, a heat abstractor for integrated form motor is provided, integrated form motor includes motor body, support, drive plate and back lid, heat abstractor includes the fin, be equipped with power tube, pad and copper foil on the drive plate, the pad is located the inboard of drive plate, the power tube is pasted on the pad, the copper foil is located the outside of drive plate, the fin is located between copper foil and the back lid.

Preferably, the heat sink further comprises a heat dissipating rib fixed to the rear cover.

Preferably, the heat dissipation rib is fixed on the rear cover through a first screw.

Preferably, a via hole is arranged between the bonding pad and the copper foil.

Preferably, the outer side of the driving plate is provided with a via hole corresponding to the copper foil.

Preferably, a boss is arranged at the connecting position of the rear cover and the radiating fin.

Preferably, the boss is tightly attached to the heat sink.

Preferably, the heat sink is tightly attached to the copper foil.

Preferably, the driving plate is fixed on the bracket by a second screw.

Preferably, the heat dissipation surface of the power tube is fixed on the pad.

Compared with the prior art, the utility model has the advantages of it is following:

1) the utility model increases the heat dissipation effect, reduces the temperature rise, and the motor can run for a long time;

2) the rear cover and the heat dissipation ribs of the utility model are separately designed, the heat dissipation ribs can be selected and matched, and the application is more convenient;

3) the utility model discloses simple structure, easy to assemble, low in manufacturing cost etc..

Drawings

Fig. 1 is a schematic diagram of the explosion structure of the present invention;

FIG. 2 is a schematic view of the assembled structure of the present invention;

FIG. 3 is a schematic view of the present invention in a partial cross-sectional view;

fig. 4 is a schematic structural view of the inner side of the driving plate of the present invention;

fig. 5 is a schematic structural diagram of the outside of the driving plate of the present invention;

FIG. 6 is a schematic view of the assembly structure of the rear cover and the heat sink of the present invention;

wherein 1 is the motor body, 2 is the support, 3 is the drive plate, 4 is the back lid, 5 is the fin, 6 is the heat dissipation muscle, 7 is first screw, 31 is the power tube, 32 is the pad, 33 is the copper foil, 34 is the via hole, 41 is the boss.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in fig. 1 to 6, a heat dissipation device for an integrated motor, the integrated motor includes a motor body 1, a bracket 2, a driving board 3 and a rear cover 4, the heat dissipation device includes a heat dissipation plate 5, a power tube 31, a bonding pad 32 and a copper foil 33 are disposed on the driving board 3, the bonding pad 32 is located on the inner side of the driving board 3, the power tube 31 is attached to the bonding pad 32, the copper foil 33 is located on the outer side of the driving board 3, and the heat dissipation plate 5 is located between the copper foil 33 and the rear cover 4.

The heat dissipation device further comprises a heat dissipation rib 6 fixed on the rear cover 4, wherein the heat dissipation rib is independently designed and can be selected and matched as required.

As shown in fig. 2, the heat dissipating ribs 6 are fixed to the rear cover 4 by first screws 7.

As shown in fig. 4 and 5, a via hole 34 is formed between the pad 32 and the copper foil 33, the pad is designed with a via hole, and a large area of copper foil is laid on the outer side of the driver board PCB and connected with the pad through the via hole. Or the position of the copper foil 33 corresponding to the outer side of the driving board 3 is provided with the via hole 34, that is, the via hole is not limited to the position of the pad, and the via hole can be arranged to the inner side at the position corresponding to the copper foil on the outer side of the PCB, so as to achieve better heat conduction.

The rear cover 4 and the radiating fin 5 are connected with each other through a boss 41, namely, heat is conducted between the PCB copper foil and the rear cover through the radiating fin, and the rear cover is provided with the boss corresponding to the radiating fin, so that the contact is tighter.

The boss 41 is tightly attached to the heat sink 5. The heat sink 5 is tightly attached to the copper foil 33.

The driving plate 3 is fixed on the bracket 2 through a second screw. The heat dissipation surface of the power tube 31 is fixed on the pad 32, and the power switch device refers to a device for power conversion, such as a MOSFET, an IGBT, and the like.

The utility model discloses a heat dissipation principle as follows: the power switch device is a heating source on a drive plate (or a power plate), and is attached to a pad on the inner side of the drive plate, a copper foil is laid on the outer side of the drive plate, a via hole (the via hole is not limited to the position of the pad) is arranged between the pad and the copper foil, and heat of the power switch device is conducted to the copper foil through the pad and the via hole (considering other heating sources such as a resistor, a power circuit and the like, the heat of the inner side is conducted to the copper foil through surface heat conduction and then is transmitted to the copper foil on the outer side through the via hole). A radiating fin is pasted between the rear cover and the copper foil, and the radiating fin is made of a heat conduction material and has high heat conduction coefficient; the radiating fins and the bosses on the rear cover as well as the radiating fins and the copper foil are completely and tightly attached to ensure that heat can be fully conducted.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a heat abstractor for integrated form motor, integrated form motor includes motor body (1), support (2), drive plate (3) and back lid (4), its characterized in that, heat abstractor includes fin (5), be equipped with power tube (31), pad (32) and copper foil (33) on drive plate (3), pad (32) are located the inboard of drive plate (3), power tube (31) are pasted on pad (32), copper foil (33) are located the outside of drive plate (3), fin (5) are located between copper foil (33) and back lid (4).

2. The heat sink for an integrated motor as claimed in claim 1, further comprising heat dissipating ribs (6) fixed to the rear cover (4).

3. The heat sink for an integrated motor according to claim 2, wherein the heat dissipating ribs (6) are fixed to the back cover (4) by first screws (7).

4. The heat sink for an integrated motor as claimed in claim 1, wherein a via hole (34) is formed between the pad (32) and the copper foil (33).

5. The heat sink for integrated motor as claimed in claim 1, wherein the driving board (3) is provided with via holes (34) at positions corresponding to the copper foils (33) on the outside.

6. The heat sink for an integrated motor as claimed in claim 1, wherein the rear cover (4) is provided with a boss (41) at a position where the rear cover is connected to the heat sink (5).

7. The heat sink for an integrated motor as claimed in claim 6, wherein the boss (41) is closely fitted with the heat sink (5).

8. The heat sink for an integrated motor as claimed in claim 1, wherein the heat sink (5) is closely attached to the copper foil (33).

9. A heat sink for an integrated electric motor in accordance with claim 1, wherein the driving plate (3) is fixed to the bracket (2) by means of second screws.

10. The heat sink for an integrated motor as claimed in claim 1, wherein the heat dissipating surface of the power tube (31) is fixed to the pad (32).