CN213879681U

CN213879681U - Five-phase motor controller with double rows of power devices

Info

Publication number: CN213879681U
Application number: CN202023256035.1U
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 double power device's five-phase machine controller greatly, include: by metal casing, flexible glue spare and the shell that fixed stop constitutes and control circuit board wherein, this control circuit board includes: the printed circuit board, five power output units of setting on the printed circuit board, power connection terminal and output connection terminal, at least one power device has been included in every power output unit, the power device falls into two rows, the setting is in the both sides of printed circuit board, metal casing is provided with the heat dissipation boss respectively on the internal surface corresponding with two rows of power devices, all power devices paste through heat conduction insulating pad and lean on corresponding heat dissipation boss, be provided with backing plate supporting part and a plurality of pad post on the cushion, the top of backing plate supporting part is provided with the elasticity backing plate, be provided with on the fixed stop and compress tightly the boss, compress tightly the boss and support and press on the elasticity backing plate. The five-phase motor controller is particularly suitable for occasions with large output torque.

Description

Five-phase motor controller with double rows of power devices

Technical Field

The utility model relates to a five-phase machine controller, concretely relates to five-phase machine controller of double power device.

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 double rows of 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 for improving 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 double-row power device 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 for a dual bank power device, 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 the 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; all power devices are divided into two rows and are respectively arranged at two sides of the printed circuit board, moreover, the heat dissipation surfaces of the power devices face the metal shell and extend out of the printed circuit board, heat dissipation bosses are respectively arranged at the positions, corresponding to the power devices at the corresponding side, of two sides of the inner surface of the metal shell, all the power devices are attached to the heat dissipation bosses at the corresponding side through heat conduction insulating pads or heat conduction insulating plates, a soft rubber part is arranged between the metal shell and a fixed baffle plate, a plurality of cushion columns which are dispersedly arranged are arranged at one surface of the soft rubber part facing the printed circuit board, an elastic cushion plate matched with the power devices is arranged on the soft rubber part through a cushion plate supporting part, a pressing cavity is formed at the back of the elastic cushion plate, a pressing boss matched with the pressing cavity is arranged on the fixed baffle plate, the pressing boss is inserted into the pressing cavity, Is pressed against the back surface of the elastic backing plate.

As a preferable scheme, in the five-phase motor controller with two rows of power devices, the outer surface of the metal shell is provided with the heat dissipation fins at the positions corresponding to the power devices.

As a preferable scheme, in the five-phase motor controller of the dual-row power device, the elastic pad is a spring plate, and the pad support portion includes: the spring piece is arranged in the connecting ring, the lower portion of the connecting ring is connected with the soft rubber piece, the top of the inner side of the connecting ring is provided with at least two placing portions for placing the spring piece, and the spring piece is placed in the connecting ring and placed on the placing portions on the connecting ring.

As a preferable aspect, in the five-phase motor controller of a dual-row power device, the rest portion includes: the device comprises placing steps arranged at two ends of the top of the inner side of the connecting ring and at least one transverse connecting strip arranged between two sides of the top of the inner side of the connecting ring.

As a preferable scheme, in the five-phase motor controller of the dual-row power device, 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 of the dual-row power device, 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 scheme, in the five-phase motor controller of the dual-row power device, the biasing member includes: a pair of bullet preforming that is splayed symmetrical arrangement, this bullet preforming specifically 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 two rows of power devices, the pressing support part is arranged obliquely inwards.

As a preferable scheme, in the five-phase motor controller with two rows of power devices, the power devices are attached to the heat dissipation bosses 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 five-phase motor controller of the dual-row power device, 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 preferred scheme, in the five-phase motor controller of the dual-row power device, the surface of the soft rubber part, which faces away from the printed circuit board, is provided with the compression columns in one-to-one correspondence with the pad columns, 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 preferred scheme, in the five-phase motor controller with dual-row power devices, 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 of the dual-bank power device, the five-phase motor controller of the dual-bank power device 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 extends the upper part of the power device out of the printed circuit board, the heat dissipation boss is arranged inwards on the metal shell, and the pressing boss is arranged on the fixed baffle plate, so that when the fixed baffle plate is tightened on the metal shell, the upper part (the part for heat dissipation) of the power device is clamped between the heat dissipation boss, the heat conduction insulating pad, the elastic base plate and the pressing boss; 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 ventilation opening on the shell or additionally arrange 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, the short circuit which is possibly 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 surface 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, the five-phase motor controlled by the five-phase motor controller of the utility model is adopted, on one hand, the torque pulsation frequency of the motor is improved due to the increase of the number of phases of the motor, and the reliability of the motor is improved; 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: 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 piece, 31, a pad column, 32, a soft rubber pad, 321, an end, 322, a side portion, 3211, a transverse connecting strip, 33, a connecting ring, 331, an end portion, 3311, a placing step, 332, a side portion, 4, a fixing baffle, 41, a placing cavity, 42, a pressing boss, 5, a screw, 6, a spring piece, 60, a connecting ring, a connecting rod, a, Suppress base plate, 61, suppress supporting part, 612, arc connecting portion, 62, suppress portion.

Detailed Description

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

The first embodiment is as follows:

as shown in fig. 1, a five-phase motor controller of double power device of the utility model, include: the casing that comprises metal casing 1 and the fixed stop 4 of tightening on metal casing 1 through screw 5, is provided with the control circuit board 2 that is used for driving the five-phase motor in the casing, and this control circuit board 2 includes: the five-phase motor five-hole power output device comprises a printed circuit board 20, five power output units arranged on the printed circuit board 20, an eight-hole (small-spacing) first functional socket 23, a sixteen-hole second functional socket 24, an eight-hole third functional socket 25, a two-hole power supply connection base 21 and a five-hole output connection base 22 for controlling a five-phase motor, wherein each power output unit comprises four power MOS (metal oxide semiconductor) tubes 26 (the number of the power MOS tubes is determined according to actual output power), all the power MOS tubes 26 are divided into two rows and are respectively arranged on two sides of the printed circuit board 20, in addition, heat dissipation parts of the power MOS tubes 26 extend out of the printed circuit board 20, and power supply connection base mounting holes 11, power supply connection base 22, first functional socket 23, second functional socket 24 and third functional socket 25 which are in one-to one correspondence with the power supply connection base 21 and output connection base 22 and the first functional socket 23, second functional socket 24 and third functional socket 25 are arranged in the metal shell 1, An output wire holder mounting port 12, a first functional socket mounting port 13, a second functional socket mounting port 14 and a third functional socket mounting port 15; the inner surfaces of the metal shell 1 corresponding to the two rows of power MOS transistors 26 are respectively provided with heat dissipation bosses 17-see fig. 1, fig. 3 and fig. 5, the outer surface of the metal shell 1 is provided with heat dissipation fins 16, the heat dissipation fins 16 cover the parts corresponding to the two rows of power MOS transistors 26, all the power MOS transistors 26 are attached to the heat dissipation bosses 17 on the corresponding side through heat conduction insulating pads (the heat conduction insulating pads belong to the conventional technology in the field and are not shown in the figure), a soft rubber member 3 is arranged between the metal shell 1 and the fixed baffle 4, the soft rubber member 3 is provided with a plurality of padding columns 31 which are distributed on the surface facing the printed circuit board 20, the soft rubber member 3 is provided with compression columns (the conventional technology in the field and are not shown in the figure) which are in one-to-one correspondence with the padding columns 31 on the surface facing away from the printed circuit board 20, namely: the compression columns are opposite to the corresponding cushion columns 31 one by one (the corresponding compression columns and the cushion columns 31 have the same diameter and the axes are coincident); soft glue spare 3 on be provided with the soft rubber 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 rubber pad 32 and support to press and use the cavity, the backing plate supporting part include: the connecting ring is arranged downwards around the edge of the soft rubber pad 32, the lower parts of the pair of end parts 321 and the pair of side parts 322 of the connecting ring are connected with the soft rubber part 3, the upper parts of the pair of end parts 321 of the connecting ring are connected with the soft rubber pad 32, the pair of side parts 322 of the connecting ring are respectively connected with the soft rubber pad 32 through the transverse connecting strips 3211, the fixed baffle 4 is provided with a pressing boss 42 matched with the pressing concave cavity and a placing cavity 41 used for placing a pressing column, the pressing boss 42 is inserted into the pressing concave cavity and pressed on the back of the soft rubber pad 32, and the plastic packaging shells on the front surfaces of all the power MOS tubes 26 are correspondingly attached to the front surface of the soft rubber pad 32 one by one.

Example two:

as shown in fig. 2, another five-phase motor controller with double-row power tubes, which adopts the spring leaf 6 as the elastic base plate, the base plate supporting part comprises: a connecting ring 33 arranged downward around the edge of the spring plate 6, both side portions 332 and both end portions 331 of the connecting ring 33 are directly connected to the soft rubber member 3, both end portions 331 of the connecting ring 33 are provided with a rest step 3311 on the back surface thereof, and a lateral rest bar 3211 may be further provided between both sides of the inside top portion of the connecting ring 3 as needed, the spring plate 6 being placed in the connecting ring 33, resting on each of the rest steps 3311 as a rest portion at both ends of the connecting ring 33, and the lateral rest bar 3211 connecting both side portions 332 of the connecting ring 33; 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 includes: the power MOS transistor comprises a pressing part 62 parallel to the pressing substrate 60, a supporting part 61 connecting the pressing part 62 and the pressing substrate 60 and inclining inwards, an arc-shaped connecting part 612 is arranged between the supporting part 61 and the pressing part 62, and the 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 dual-row power device 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 five-phase motor controller for a dual bank power device, 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 the 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 divided into two rows and are respectively arranged at two sides of the printed circuit board, moreover, the heat dissipation surfaces of the power devices face the metal shell and extend out of the printed circuit board, heat dissipation bosses are respectively arranged at the positions, corresponding to the power devices at one corresponding side, of two sides of the inner surface of the metal shell, all the power devices are attached to the heat dissipation bosses at one corresponding side through heat conduction insulating pads or heat conduction insulating plates, a soft rubber part is arranged between the metal shell and a fixed baffle, a plurality of cushion columns which are dispersedly arranged are arranged at one surface of the soft rubber part facing the printed circuit board, an elastic cushion plate matched with the power devices is arranged on the soft rubber part through a cushion plate supporting part, a pressing concave cavity is formed at the back of the elastic cushion plate, a pressing boss matched with the pressing concave cavity is arranged on the fixed baffle, the pressing boss is inserted into the pressing concave cavity, Is pressed against the back surface of the elastic backing plate.

2. The five-phase motor controller with two rows of power devices as claimed in claim 1, wherein the metal casing is provided with heat dissipating fins on the outer surface thereof at locations corresponding to the power devices.

3. The five-phase motor controller of a dual bank power device as claimed in claim 1, wherein the elastic pad is a soft pad, and the pad support part comprises: and the connecting ring is arranged downwards around the edge of the spring piece, 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 five-phase motor controller of a dual bank power device as claimed in claim 1, wherein the elastic pad is a spring plate, and the pad support part comprises: the spring piece is arranged in the connecting ring, the lower portion of the connecting ring is connected with the soft rubber piece, the top of the inner side of the connecting ring is provided with at least two placing portions for placing the spring piece, and the spring piece is placed in the connecting ring and placed on the placing portions on the connecting ring.

5. The five-phase motor controller of a double row power device as claimed in claim 4, wherein said resting portion comprises: the device comprises placing steps arranged at two ends of the top of the inner side of the connecting ring and at least one transverse connecting strip arranged between two sides of the top of the inner side of the connecting ring.

6. The five-phase motor controller of a double-row power device as claimed in claim 4, 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 double rows of power devices as claimed in claim 1, wherein the power devices are attached to the heat dissipation bosses 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 five-phase motor controller of a dual bank power device as claimed in claim 7, wherein the metal substrate is an aluminum board, and the heat conductive insulating board is an epoxy glass cloth laminated board or a polymer board filled with ceramic powder.

9. The five-phase motor controller of a double-row power device as claimed in claim 1, wherein the surface of the soft plastic 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. The five-phase motor controller of a dual bank power device as claimed in claim 1, wherein: the power device is a power MOS tube.

11. The five-phase motor controller of a dual bank power device as claimed in 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 dual bank power device as claimed in any one of claims 1 to 11, wherein: the five-phase motor controller of the double-row power device 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.