CN213880635U

CN213880635U - Motor controller

Info

Publication number: CN213880635U
Application number: CN202023253440.8U
Authority: CN
Inventors: 顾挺
Original assignee: ZHANGJIAGANG CASS SEMICONDUCTOR CO Ltd; Zhangjiagang Kaicheng Software Technology Co ltd; Jiangsu Xiechang Electronic Technology Co ltd
Current assignee: ZHANGJIAGANG CASS SEMICONDUCTOR CO Ltd; Zhangjiagang Kaicheng Software Technology Co ltd; Jiangsu Xiechang Electronic Technology Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-08-03
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a can improve radiating effect's machine controller greatly, include: the shell that comprises metal casing and fixed stop is provided with the printed wiring board in the shell, is provided with motor control circuit and power conversion circuit on the printed wiring board, and motor control circuit includes a plurality of power device, power connection terminal, motor connection terminal, power conversion circuit includes: supply socket and at least one power device, the metal casing inwards is provided with the heat dissipation boss on the position corresponding with power device, all power devices paste through the heat conduction insulating film and lean on the heat dissipation boss, be provided with the soft glue spare between metal casing and the fixed stop, be provided with backing plate supporting part on the soft glue spare, and a plurality of pad post, the top of backing plate supporting part is provided with flexible backing plate, be provided with on the fixed stop and compress tightly the boss, compress tightly the boss and support and press on the elastic backing plate. Motor controller especially be applicable to among the high temperature environment.

Description

Motor controller

Technical Field

The utility model relates to an electropneumatic controller, concretely relates to machine controller.

Background

At present, the structure of a conventional three-phase motor controller generally includes: a housing, a control circuit board for driving the three-phase motor is provided in the housing, the control circuit board includes: printed wiring board, three power output unit, a plurality of function socket, power connection base of setting on printed wiring board and the motor connection base of control three-phase motor, included at least one power MOS pipe in every power output unit, the shell include: the shell is provided with a power supply wiring mounting port, a motor wiring mounting port and a functional socket mounting port which are in one-to-one correspondence with the power supply wiring base, the motor wiring base and the functional socket. In the conventional three-phase motor controller, a radiator is usually fixed on a power MOS tube, a heat dissipation vent matched with the radiator is formed in a housing, and sometimes a heat dissipation fan needs to be additionally installed in order to improve a heat dissipation effect; however, although the heat dissipation fan is additionally installed, the heat dissipation effect is still not ideal, and in any case, as the service life of the heat dissipation fan increases, the performance of the heat dissipation fan also decreases, thereby further affecting the heat dissipation effect.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a motor controller capable of greatly improving a heat dissipation effect is provided.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a motor controller structurally comprising: the shell is provided with the printed wiring board in the shell, be provided with motor control circuit and power conversion circuit on the printed wiring board, motor control circuit include a plurality of power device, power connection terminal, motor connection terminal, power conversion circuit include: at least one power outlet, and at least one power device; the housing includes: the metal shell is internally provided with a power socket mounting port, a power wiring mounting port and a motor wiring mounting port which are in one-to-one correspondence with the power socket, the power wiring base and the motor wiring base; the heat dissipation parts of all power devices extend out of the printed circuit board, the metal shell is inwards provided with heat dissipation bosses on the parts corresponding to the power devices, the power devices are attached to the heat dissipation bosses through heat conduction insulating films or heat conduction insulating plates, soft rubber pieces are arranged between the metal shell and the fixed baffle, one side, facing the printed circuit board, of each soft rubber piece is provided with a plurality of scattered cushion columns, each soft rubber piece is provided with an elastic cushion plate matched with the power devices through a cushion plate supporting part, the back of each elastic cushion plate is provided with a concave cavity for pressing, the fixed baffle is provided with a pressing boss matched with the concave cavity for pressing, and the pressing boss is inserted into the concave cavity for pressing and pressed against the back of the elastic cushion plate.

Preferably, in the motor controller, the metal casing is provided with heat dissipation fins outward at a portion corresponding to the power device.

As a preferable aspect, in the motor controller, the elastic pad is a soft pad, and the pad support portion includes: the connecting ring or the connecting strips are arranged downwards around the edge of the soft rubber cushion, the upper part of the connecting ring or the connecting strips is connected with the soft rubber cushion, and the lower part of the connecting ring or the connecting strips is connected with the soft rubber piece.

As a preferable aspect, in the motor controller, the elastic pad is a spring plate, and the pad support portion includes: the spring piece is arranged in the connecting ring, and the spring piece is placed in the connecting ring and rests on the resting part of the connecting ring.

As a preferable aspect, in the motor controller, a spring plate is disposed in the elongated through hole, and the spring plate includes: the base plate is pressed by the aid of the pressing base plate matched with the base plate supporting portion, pressing components which correspond to the power devices one to one are arranged on the pressing base plate, and the pressing boss of the fixed baffle abuts against the pressing base plate.

As a preferable aspect, in the motor controller, a specific structure of the urging member includes: a pair of bullet preforming that is splayed symmetrical arrangement, this bullet preforming includes: the base plate comprises a spring pressing part parallel to the spring pressing base plate and a spring pressing supporting part connecting the spring pressing part and the spring pressing base plate.

Preferably, in the motor controller, the biasing support portion is disposed to be inclined inward.

Preferably, in the motor controller, at least one transverse connecting portion is provided between both sides of the elongated hole, and the latch base plate rests on the transverse connecting portion.

As a preferable aspect, in the motor controller, the power device is attached to the heat dissipation boss through an aluminum substrate, and the aluminum substrate includes: the circuit layer and the metal base layer, the heat conduction insulation board set up as heat conduction insulating layer between circuit layer and the metal base layer.

As a preferable scheme, in the motor controller, the metal substrate is an aluminum plate, and the heat-conducting insulating plate is an epoxy glass cloth laminated plate or a polymer plate filled with ceramic powder.

As a preferable solution, in the motor controller, a surface of the flexible adhesive member facing away from the printed circuit board is provided with compression columns corresponding to the pad columns one to one, that is: the pressing columns are opposite to the corresponding cushion columns one by one, and the fixed baffle is provided with a placing cavity for placing the pressing columns.

As a preferable scheme, in the motor controller, the printed circuit board is further provided with at least one functional socket corresponding to the functional socket, and the metal shell is provided with functional socket mounting openings corresponding to the functional socket one by one.

As a preferable aspect, in the motor controller, the motor controller further includes: the motor wiring seat dustproof cover can be arranged on the motor wiring installation opening, and the power supply wiring seat dustproof cover can be arranged on the power supply wiring installation opening.

The utility model has the advantages that: the utility model discloses a stretch out the printed wiring board with the upper portion of power device, inwards be provided with the heat dissipation boss on the metal casing, be provided with the elastic backing plate through the backing plate supporting part on the flexible glue spare, be provided with on fixed stop with the elastic backing plate back form support press with cavity matched with compress tightly the boss, when fixed stop tightens up on the metal casing, the radiating part position of power device is pressed from both sides tightly between heat dissipation boss, heat conduction insulating film and elastic backing plate and the boss that compresses tightly; therefore, the whole metal shell dissipates heat, the heat dissipation area is greatly increased, and in addition, the heat dissipation effect is further improved by arranging the heat dissipation fins outside the metal shell. Therefore, the ventilation opening does not need to be formed in the shell, and the radiating fan does not need to be additionally arranged, so that the whole shell can be made into a closed space, and the application occasions of the shell are greatly expanded. In addition, the spring piece is used as the elastic base plate, so that the fixed baffle and the power device are attached together more tightly, and the heat dissipation effect is further improved; in addition, because the cushion columns are arranged on the soft rubber part, the pins of various components on the control circuit board are effectively prevented from touching the fixed baffle plate which is usually made of metal materials, and the short circuit which is possibly caused by the short circuit is avoided, so that the safety of the control circuit board is improved. Moreover, because the motor controller is integrated with the power supply conversion circuit, the structure of the whole control system is more compact and reasonable, and the cost is saved.

Drawings

Fig. 1 is an exploded schematic view of a motor controller according to the present invention.

Fig. 2 is an exploded view of another motor controller according to the present invention.

Fig. 3 is an enlarged schematic view of a portion a of fig. 2.

The reference numerals in fig. 1 to 3 are respectively: 1. a metal shell, 11, a power connection installation port, 110, a power connection base dust cover, 12, a motor connection installation port, 120, a motor connection base dust cover, 13, a first function socket installation port, 14, a second function socket installation port, 15, a third function socket installation port, 16, a heat dissipation fin, 18, a power socket installation port, 20, a printed circuit board, 21, a power connection base, 22, a motor connection base, 23, a first function socket, 24, a second function socket, 25, a third function socket, 26, a power MOS tube, 27, a power MOS tube, 28, an installation bottom plate, 281, a first power socket, 282, a second power socket, 29, a heat conduction insulation film, 3, a soft rubber piece, 31, a cushion column, 32, a soft rubber cushion, 321, an end connection strip, 322, a side connection strip, 33, a connection ring, 331, an end, 332, a transverse connection strip, 4, a fixed baffle, 41. the sealing rubber comprises a mounting cavity, 42, a pressing boss, 5, a screw, 6, a spring piece, 60, a pressing base plate, 61, a pressing supporting part, 612, an arc-shaped connecting part, 62, a pressing part, 71, sealing rubber, 72, sealing rubber, 73, sealing rubber, 74, sealing rubber, 75, sealing rubber, 78 and sealing rubber.

Detailed Description

The following describes a detailed embodiment of a motor controller according to the present invention in detail by taking a three-phase motor as an example, with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in fig. 1, the present invention provides a motor controller, including: by metal casing 1 and tighten up the shell that fixed stop 4 on metal casing 1 constitutes through screw 5, be provided with printed wiring board 20 in the shell, be provided with motor control circuit and power switching circuit on the printed wiring board 20, motor control circuit include a plurality of power MOS pipe 26, power connection base 21, motor connection base 22, the first function socket 23 in an eight hole, the second function socket 24 in a sixteen holes, the third function socket 25 in a six holes, power switching circuit include: two power MOS transistors 27 and their control circuits (which are conventional in the art and will not be described herein), and a first power socket 281 and a second power socket 282 disposed on the printed wiring board 20 through the mounting substrate 28; a power socket mounting port 18 matched with the first power socket 281 and the second power socket 282, and a power wiring mounting port 11, a motor wiring mounting port 12, a first function socket mounting port 13, a second function socket mounting port 14 and a third function socket mounting port 15 which are in one-to-one correspondence with the power wiring base 21, the motor wiring base 22, the first function socket 23, the second function socket 24 and the third function socket 25 are formed in the metal shell 1; the power MOS transistors 26 and the power MOS transistors 27 are located at one side of the printed circuit board 20 and arranged in a row, the metal casing 1 is provided with heat dissipation bosses inward and heat dissipation fins 16 outward (the heat dissipation bosses belong to the conventional technology in the field and are not shown in the figure) at the corresponding positions of the

power MOS transistors

26 and 27, all the

power MOS transistors

26 and 27 are attached to the heat dissipation bosses through heat conduction insulating films 29, the soft rubber member 3 is arranged between the metal casing 1 and the fixed baffle 4, the soft rubber member 3 is provided with a plurality of padding columns 31 distributed on one surface facing the printed circuit board 20, the soft rubber member 3 can be further provided with compression columns (belonging to the conventional technology in the field and are not shown in the figure) corresponding to the padding columns 31 on the surface facing away from the printed circuit board 20 as required, and the compression columns are one-to-one against corresponding padding columns 31 (the corresponding compression columns and padding columns 31 have the same diameter as the padding columns 31), The axes coincide); the soft rubber component 3 on be provided with soft cushion 32 through the backing plate supporting part, promptly: be provided with the backing plate supporting part on the soft rubber component 3, the top of backing plate supporting part is provided with soft cushion 32 to form at the back of soft cushion 32 and support to press and use the cavity, the backing plate supporting part include: an end connecting strip 321 and a plurality of side connecting strips 322 are arranged around the edge of the soft rubber pad 32 and are positioned at two ends of the soft rubber pad, the upper parts of the end connecting strip 321 and the side connecting strips 322 are connected with the soft rubber pad 32, and the lower parts of the end connecting strip 321 and the side connecting strips 322 are connected with the soft rubber 3; the fixed baffle 4 is provided with a pressing boss 42 matched with the pressing concave cavity and a mounting cavity 41 for mounting the pressing column, the pressing boss 42 is inserted into the pressing concave cavity and pressed against the back of the soft rubber cushion 32, and the front plastic package shells of all the

power MOS tubes

26 and 27 are correspondingly attached to the front of the soft rubber cushion 32 one by one. In the present embodiment, a sealing rubber sheet 78 is disposed between the metal shell 1 and the mounting base plate 28 for mounting the first power socket 281 and the second power socket 282, and corresponding

sealing rubber sheets

71, 72, 73, 74 and 75 are disposed between the metal shell 1 and the power connection base 21, the motor connection base 22, the eight-hole first functional socket 23, the sixteen-hole second functional socket 24 and the six-hole third functional socket 25, respectively.

Example two:

as shown in fig. 2, another motor controller of the present invention employs a spring plate 6 as an elastic cushion plate, and the cushion plate support portion includes: a connection ring 33 disposed downward around the edge of the spring plate 6, both end portions 331 of the inside top portion of the connection ring 3 being provided with a resting step (which is a conventional technique in the art and not shown in the drawings) on the back surface thereof, three lateral connection strips 332 being provided between both sides of the inside top portion of the connection ring 3, the spring plate 6 being placed in the connection ring 33, resting on one resting step at each of both ends of the connection ring 33 as a resting portion, and three lateral connection strips 332 being located at the middle of the connection ring 33; the other structure is the same as that of the motor controller according to the first embodiment. As shown in fig. 3, the spring plate 6 is generally a stamped part, and its specific structure includes: the spring pressing substrate 60 matched with the connecting ring 33 is provided with spring pressing components corresponding to the

power MOS tubes

26 and 27 one by one, and the specific structure of the spring pressing components comprises: a pair of bullet preforming that is splayed symmetrical arrangement, this bullet preforming's concrete structure includes: the power MOS tube comprises a spring pressing part 62 parallel to the spring pressing substrate 60, a spring pressing support part 61 connecting the spring pressing part 62 and the spring pressing substrate 60 and inclining inwards, an arc-shaped connecting part 612 is arranged between the spring pressing support part 61 and the spring pressing part 62, and the spring pressing part 62 abuts against the front plastic package shell of the

power MOS tubes

26 and 27.

In practical application, the

power MOS transistors

26 and 27 may also abut against the heat dissipation boss through an aluminum substrate; the aluminum substrate comprises: the circuit layer and the metal base layer, and an epoxy glass cloth laminated board as a heat conduction insulating layer or a polymer board filled with ceramic powder are arranged between the circuit layer and the metal base layer. The fixed baffle 4 (also called a back cover plate) is usually formed by stamping a metal plate, and the metal plate is usually an aluminum plate or an iron plate.

In the actual use process, when the motor controller is idle, in order to prevent dust, the power connection base dustproof cover 110 can be inserted into the power connection mounting hole 11 to cover the power connection base 21, and the motor connection base dustproof cover 120 can be inserted into the motor connection mounting hole 12 to cover the motor connection base 22.

In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the shapes, structures, features and spirit of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A motor controller comprising: the shell is provided with the printed wiring board in the shell, be provided with motor control circuit and power conversion circuit on the printed wiring board, motor control circuit include a plurality of power device, power connection terminal, motor connection terminal, power conversion circuit include: at least one power outlet, and at least one power device; the housing includes: the metal shell is internally provided with a power socket mounting port, a power wiring mounting port and a motor wiring mounting port which are in one-to-one correspondence with the power socket, the power wiring base and the motor wiring base; the method is characterized in that: the heat dissipation parts of all power devices extend out of the printed circuit board, the metal shell is inwards provided with heat dissipation bosses on the parts corresponding to the power devices, the power devices are attached to the heat dissipation bosses through heat conduction insulating films or heat conduction insulating plates, soft rubber pieces are arranged between the metal shell and the fixed baffle, one side, facing the printed circuit board, of each soft rubber piece is provided with a plurality of scattered cushion columns, each soft rubber piece is provided with an elastic cushion plate matched with the power devices through a cushion plate supporting part, the back of each elastic cushion plate is provided with a concave cavity for pressing, the fixed baffle is provided with a pressing boss matched with the concave cavity for pressing, and the pressing boss is inserted into the concave cavity for pressing and pressed against the back of the elastic cushion plate.

2. The motor controller according to claim 1, wherein the metal case is provided with heat dissipating fins outwardly at portions corresponding to the power devices.

3. The motor controller of claim 1, wherein the elastic pad is a soft rubber pad, and the pad support portion comprises: and the connecting ring is arranged downwards around the edge of the soft rubber pad, the upper part of the connecting ring is connected with the soft rubber pad, and the lower part of the connecting ring is connected with the soft rubber piece.

4. The motor controller of claim 1, wherein the elastic pad is a soft rubber pad, and the pad support portion comprises: the connecting strips are arranged downwards around the edge of the soft rubber pad, the upper parts of the connecting strips are connected with the soft rubber pad, and the lower parts of the connecting strips are connected with the soft rubber piece.

5. The motor controller of claim 1, wherein said resilient pad is a leaf spring, said pad support portion comprising: and the spring piece is placed in the connecting ring and rests on the resting part of the connecting ring.

6. The motor controller according to claim 5, wherein the spring plate comprises: the base plate is pressed by the aid of the pressing base plate matched with the base plate supporting portion, pressing components which correspond to the power devices one to one are arranged on the pressing base plate, and the pressing boss of the fixed baffle abuts against the pressing base plate.

7. The motor controller according to claim 1, wherein the power device is attached to the heat dissipating boss of the metal housing through an aluminum substrate, and the aluminum substrate comprises: the circuit layer and the metal base layer, the heat conduction insulation board set up as heat conduction insulating layer between circuit layer and the metal base layer.

8. The motor controller according to claim 7, wherein said metal substrate is an aluminum plate, and said heat-conductive insulating plate is an epoxy glass cloth laminate or a polymer plate filled with ceramic powder.

9. The motor controller according to claim 1, wherein the surface of the soft adhesive member facing away from the printed circuit board is provided with compression posts corresponding to the pad posts one by one, that is: the pressing columns are opposite to the corresponding cushion columns one by one, and the fixed baffle is provided with a placing cavity for placing the pressing columns.

10. A motor controller according to claim 1, wherein: the power device is a power MOS tube.

11. A motor controller according to claim 1, wherein: the printed circuit board is also provided with at least one functional socket corresponding to the functional socket, and the metal shell is provided with functional socket mounting openings corresponding to the functional sockets one to one.

12. A motor controller according to any one of claims 1 to 11, wherein: the motor controller also comprises: the motor wiring seat dustproof cover can be installed on the motor wiring installation opening, and the power supply wiring seat dustproof cover can be installed on the power supply wiring installation opening.