CN213879682U

CN213879682U - Five-phase motor controller of single-row power tube

Info

Publication number: CN213879682U
Application number: CN202023254024.XU
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 five-phase machine controller of single power tube of radiating effect greatly, include: the shell that constitutes by metal casing and fixed stop and wherein control circuit board, this control circuit board includes: the printed wiring board, five power output unit of setting on the printed wiring board, power connection terminal and output connection terminal, at least one power device has been included in every power output unit, all power devices set up the one side at the printed wiring board, metal casing is provided with the heat dissipation boss on the position corresponding with power device, all power devices paste through heat conduction insulating pad and lean on the heat dissipation boss, be provided with the cushion spare between metal casing and the fixed stop, be provided with backing plate supporting part and a plurality of pad post on the cushion spare, the top of backing plate supporting part is provided with the elastic 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. The five-phase motor controller is particularly suitable for occasions with large output torque.

Description

Five-phase motor controller of single-row power tube

Technical Field

The utility model relates to a machine controller, concretely relates to five-phase machine controller of single row power tube.

Background

At present, the structure of a traditional three-phase motor controller comprises: the shell is provided with the control circuit board who is used for driving three-phase motor in the shell, control circuit board include: printed wiring board, three power output unit, a plurality of function socket, power connection terminal of setting on printed wiring board and control three phase motor's output connection terminal, included at least one power MOS pipe in every power output unit, the shell include the casing and set up the fixed stop of the metal material on the casing, seted up on the casing with power connection terminal, output connection terminal, function socket one-to-one power connection terminal installing port, output connection terminal installing port and function socket installing port. In the traditional three-phase motor controller with single-row power tubes, a radiator is usually fixed on a power MOS tube, a heat dissipation vent is arranged on a shell, and sometimes a heat dissipation fan needs to be additionally arranged to improve the 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: the five-phase motor controller of the single-row power tube can greatly improve the heat dissipation effect.

In order to solve the technical problem, the utility model discloses a technical scheme does: a five-phase motor controller of single row power tube, its structure includes: the shell is provided with the control circuit board who is used for driving five-phase motor in the shell, and this control circuit board includes: printed wiring board and set up five power output unit, power connection terminal and the output connection terminal of controlling the five-phase motor on printed wiring board, included at least one power device in every power output unit, the shell include: the metal shell is internally provided with a power supply wire holder mounting port and an output wire holder mounting port which are in one-to-one correspondence with the power supply wire holder and the output wire holder; the method is characterized in that: all power devices are arranged on one side of the printed circuit board, the radiating part of each power device extends out of the printed circuit board, the metal shell is inwards provided with a radiating boss on the part corresponding to the power device, the power devices are attached to the radiating boss through a heat-conducting insulating pad or a heat-conducting insulating plate, a soft rubber part is arranged between the metal shell and a fixed baffle, one surface of the soft rubber part facing the printed circuit board is provided with a plurality of scattered cushion columns, the soft rubber part is provided with an elastic cushion plate matched with the power devices through a cushion plate supporting part, the back of the elastic cushion plate forms a pressing cavity, the fixed baffle is provided with a pressing boss matched with the pressing cavity, and the pressing boss is inserted into the pressing cavity and pressed against the back of the elastic cushion plate.

As a preferable scheme, in the five-phase motor controller with a single row of power tubes, the metal shell is provided with heat dissipation fins outwards at a position corresponding to the power device.

As a preferable scheme, in the five-phase motor controller with a single row of power tubes, the elastic base plate is a soft rubber pad, and the base plate support portion includes: the upper part of at least one end connecting strip is connected with one end of the soft rubber pad, the upper part of at least one end connecting strip is connected with the other end of the soft rubber pad, and the lower part of the end connecting strip is connected with the soft rubber piece.

As a preferable scheme, in the five-phase motor controller of the single-row power tube, two end connecting strips are provided, and two ends of the soft rubber pad at the upper part of each end connecting strip are correspondingly connected one by one.

As a preferable aspect, in the five-phase motor controller with a single row of power tubes, the elastic pad is a spring plate, and the pad support portion includes: the spring piece is arranged in the connecting ring and placed on the placing part of the connecting ring.

As a preferable scheme, in the five-phase motor controller with a single row of power tubes, the specific structure of 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.

As a preferable aspect, in the five-phase motor controller with a single row of power tubes, the biasing 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 five-phase motor controller with a single row of power tubes, the pressing support part is arranged obliquely inward.

As a preferable scheme, in the five-phase motor controller with a single row of power tubes, the power device is attached to the heat dissipation boss through an aluminum substrate, and the specific structure of 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 five-phase motor controller with a single-row power tube, 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 scheme, in the five-phase motor controller with a single row of power tubes, the 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 five-phase motor controller with a single-row power tube, the power device is a power MOS tube.

As a preferable scheme, in the five-phase motor controller with a single row of power tubes, the printed circuit board is further provided with at least one functional socket, and correspondingly, the metal shell is provided with functional socket mounting openings corresponding to the functional sockets one by one.

As a preferable scheme, in the five-phase motor controller with a single row of power tubes, the five-phase motor controller with a single row of power tubes further includes: an output wire holder dust cover mountable on the output wire holder mounting opening, and a power wire holder dust cover mountable on the power wire holder mounting 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 on the flexible glue piece, be provided with on fixed stop and compress tightly the boss, make when tightening up fixed stop on the metal casing, the heat dissipation position of power device is pressed from both sides tightly between heat dissipation boss, heat conduction insulating pad subsides 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 metal shell is also provided with heat dissipation fins, so that the heat dissipation effect is further improved. The heat dissipation effect does not need to provide a vent on the shell or additionally install a heat dissipation fan, so that the whole shell can be made into a closed space, and the application occasions of the heat dissipation device are greatly expanded. 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, so that the possible short circuit caused by the short circuit is avoided, the safety of the control circuit board is improved, and the compression columns which are arranged on the back of the soft rubber part and correspond to the cushion columns in a one-to-one mode are used for raising the position of the printed circuit board relative to the fixed baffle plate, so that the safety of the control circuit board is further improved. In addition, adopt the five-phase motor that the five-phase motor controller of the utility model controls, on one hand, because the increase of the motor phase number, the torque ripple frequency of the motor is promoted, has improved the reliability of the motor; under the condition of not increasing voltage, the current of each phase is reduced, the requirement on the capacity of a power device is reduced, the heat productivity of components is reduced, and the product is more stable and reliable; on the other hand, because five-phase machine controller's heat radiation structure is more reasonable, under the condition of equal shell size, can improve by a wide margin five-phase machine controller's output.

Drawings

Fig. 1 is an explosion structure diagram of a five-phase motor controller according to the present invention.

FIG. 2 is a schematic diagram of another five-phase motor controller according to the present invention

Fig. 3 is a schematic structural view of the metal case.

Fig. 4 is an enlarged schematic view of a portion a of fig. 2.

Fig. 5 is a schematic sectional view along the direction B-B in fig. 3.

The reference numerals in fig. 1 to 5 are respectively: 1. a metal shell, 11, a power wire holder mounting port, 110, a power wire holder dust cover, 12, an output wire holder mounting port, 120, an output wire holder dust cover, 13, a first function socket mounting port, 14, a second function socket mounting port, 15, a third function socket mounting port, 16, a heat dissipation fin, 17, a heat dissipation boss, 2, a control circuit board, 20, a printed circuit board, 21, a power wire holder, 22, an output wire holder, 23, a first function socket, 24, a second function socket, 25, a third function socket, 26, a power MOS transistor, 3, a soft rubber member, 31, a pad post, 32, a soft rubber pad, 321, an end connection strip, 33, a connection ring, 331, an end portion, 332, a side portion, 3311, an end connection strip, 4, a fixed baffle, 41, a placement cavity, 42, a compression boss, 5, a screw, 6, a spring plate, 60, a spring pressing substrate, 61, a pressing support portion, 612. arc connecting portion, 62, suppress portion.

Detailed Description

The following describes in detail a detailed embodiment of a five-phase motor controller with single-row power tubes according to the present invention with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in fig. 1, the five-phase motor controller of single-row power tube of the present invention has a structure comprising: a casing composed of a metal casing 1 and a fixed baffle 4 tightened on the metal casing 1 by a screw 5, a control circuit board 2 for driving the five-phase motor is arranged in the casing, the control circuit board 2 comprises a printed circuit board 20, five power output units arranged on the printed circuit board 20, a first functional socket 23 with eight holes (small spacing), a second functional socket 24 with sixteen holes, a third functional socket 25 with eight holes, a power supply wire holder 21 with two holes and an output wire holder 22 for controlling the five holes of the five-phase motor, each power output unit comprises two power MOS tubes 26 (the number of the power MOS tubes is determined according to the actual output power), all the power MOS tubes 26 are arranged in a row and arranged on one side of the printed circuit board 20, and the forward direction of the power MOS tubes 26 extends out of the printed circuit board 20 from the heat dissipation position, a power supply wire holder mounting port 11, an output wire holder 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 supply wire holder 21, the output wire holder 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 metal shell 1 is provided with a heat dissipation boss 17 inward and a heat dissipation fin 16 outward at a position corresponding to a row of power MOS transistors 26-as shown in fig. 1, 3 and 5, all the power MOS transistors 26 are attached to the heat dissipation boss 17 through a heat conduction insulating pad (the heat conduction insulating pad belongs to the conventional technology in the field and is not shown in the figure), a soft rubber member 3 is provided between the metal shell 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, and the soft rubber member 3 can be further provided with compression columns corresponding to the padding columns 31 one to one (the conventional technology in the field and is not shown in the figure) on one surface facing away from the printed circuit board 20 according to actual needs, that is: compress tightly the post and just face corresponding pad post 31 one by one (the post that compresses tightly that corresponds is the same with pad post 31 diameter, axial lead coincidence), soft glue spare 3 on be provided with the soft glue pad 32 as the elastic backing plate with power MOS pipe 26 matched with through the backing plate supporting part, form at the back of soft glue pad 32 and support to press and use the cavity, the backing plate supporting part include: a pair of end connecting strips 321, wherein the upper parts of the end connecting strips 321 are respectively connected with the corresponding ends of the soft rubber pad 32, and the lower parts of the end connecting strips 321 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 are correspondingly attached to the front of the soft rubber cushion 32 in a one-to-one manner.

Example two:

as shown in fig. 2, another five-phase motor controller with single-row power tubes of the present invention employs a spring leaf 6 as an elastic cushion plate, and the cushion plate supporting portion includes: the connecting ring 33 is arranged downwards around the edge of the spring leaf 6, the two side parts 332 of the connecting ring 33 are directly connected with the soft rubber 3, the two end parts 331 of the connecting ring 33 are connected with the soft rubber 3 through end connecting strips 3311, the two end parts 331 at the top inside the connecting ring 33 are provided with placing steps (belonging to the conventional technology in the field and not shown in the figure) on the back surface, and a plurality of transverse placing strips can be arranged between the two sides at the top inside the connecting ring 33 according to the requirement, wherein the spring leaf 6 is arranged in the connecting ring 33 and placed on one placing step at each end of the connecting ring 33 and the plurality of transverse placing strips at the two side parts 332 of the connecting ring 33 as placing parts; the other structure is the same as that of the motor controller according to the first embodiment. As shown in fig. 4, the spring plate 6 is generally a stamped part, and its specific structure includes: the spring substrate 60 matched with the connection ring 33 is provided with spring components corresponding to the power MOS transistors 26 one to one, and the specific structure of the spring components includes: a pair of bullet preforming that is splayed symmetrical arrangement, this bullet preforming's concrete structure including: the power MOS transistor 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 face plastic package shell of the power MOS transistor 26.

In practical application, the power MOS tube 26 can also be attached to the heat dissipation boss 17 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 practical use, when the five-phase motor controller of the single-row power tube is idle, in order to prevent dust, the power wire holder dust-proof cover 110 can be inserted into the power wire holder mounting opening 11 to cover the power wire holder 21, and the output wire holder dust-proof cover 120 can be inserted into the output wire holder mounting opening 12 to cover the output wire holder 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 single row power tube five-phase motor controller comprising: the shell is provided with the control circuit board who is used for driving five-phase motor in the shell, and this control circuit board includes: printed wiring board and set up five power output unit, power connection terminal and the output connection terminal of controlling the five-phase motor on printed wiring board, included at least one power device in every power output unit, the shell include: the metal shell is internally provided with a power supply wire holder mounting port and an output wire holder mounting port which are in one-to-one correspondence with the power supply wire holder and the output wire holder; the method is characterized in that: all the power devices are arranged on one side of the printed circuit board, and the heat dissipation part of the power devices extends out of the printed circuit board, the metal shell is internally provided with a heat dissipation boss at the part corresponding to the power device, the power device is attached to the heat dissipation boss through the heat conduction insulating pad or the heat conduction insulating plate, a soft rubber part is arranged between the metal shell and the fixed baffle, a plurality of padding columns which are distributed are arranged on one surface of the soft rubber part facing the printed circuit board in a dispersing way, an elastic padding plate which is matched with the power device is arranged on the soft rubber part through a padding plate supporting part, the back of the elastic backing plate is provided with a pressing concave cavity, the fixed baffle is provided with a pressing boss matched with the pressing concave cavity, and the pressing boss is inserted into the pressing concave cavity and pressed against the back of the elastic backing plate.

2. The five-phase motor controller with a single row of power tubes as claimed in claim 1, wherein the metal casing is provided with heat dissipating fins outwardly at locations corresponding to the power devices.

3. The five-phase motor controller of a single row of power transistors according to claim 1, wherein the elastic pad is a soft rubber pad, and the pad support portion comprises: the upper part of at least one end connecting strip is connected with one end of the soft rubber pad, the upper part of at least one end connecting strip is connected with the other end of the soft rubber pad, and the lower part of the end connecting strip is connected with the soft rubber piece.

4. The five-phase motor controller for a single row of power transistors according to claim 3, wherein there are two end connection bars, and two ends of the soft rubber pads on the two end connection bars are connected in a one-to-one correspondence manner.

5. The five-phase motor controller of a single row of power tubes as claimed in claim 1, wherein said elastic pad is a spring plate, said pad support portion comprises: the spring piece is arranged in the connecting ring and placed on the placing part of the connecting ring.

6. The five-phase motor controller of single-row power tube as claimed in claim 5, wherein the specific structure of 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 five-phase motor controller with single-row power tubes as claimed in claim 1, wherein the power device is attached to the heat dissipation boss through an aluminum substrate, and the aluminum substrate has a specific structure comprising: 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 five-phase motor controller of a single row of power transistors 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 five-phase motor controller of single-row power tubes according to claim 1, wherein the surface of the soft adhesive member facing away from the printed circuit board is provided with compression columns corresponding to the pad columns 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. The five-phase motor controller of a single row of power transistors of claim 1, wherein: the power device is a power MOS tube.

11. The five-phase motor controller of a single row of power transistors of 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. The five-phase motor controller of a single row of power transistors according to any one of claims 1 to 11, wherein: the five-phase motor controller of the single-row power tube further comprises: an output wire holder dust cover mountable on the output wire holder mounting opening, and a power wire holder dust cover mountable on the power wire holder mounting opening.