CN210780625U

CN210780625U - Motor controller

Info

Publication number: CN210780625U
Application number: CN201921927091.8U
Authority: CN
Inventors: 黄锦元; 梁志成
Original assignee: Zhongshan Broad Ocean Motor Co Ltd
Current assignee: Shanghai Edrive Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-06-16
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a machine controller includes box body and upper cover, is equipped with the cavity in the box body, installs main control board and drive plate in the cavity, and the upper cover is installed at box body top closed cavity, is equipped with water-cooling heat dissipation water course, its characterized in that at box body bottom wall: the motor controller is characterized in that the drive plate is welded with a plurality of SiC modules and a film capacitor, the SiC modules are located beside the drive plate, a plurality of radiating fins are laid on the bottom surface of the cavity, the SiC modules are installed on the radiating fins, a pressing plate is installed above the SiC modules, the pressing plate presses the SiC modules to enable the SiC modules to be in contact with the radiating fins and enable the radiating fins to be in full contact with the bottom surface of the cavity, the SiC modules are adopted to replace IGBTs to serve as power elements, the motor controller is applicable to frequencies larger than 10KHz, the control speed is larger than 100000rpm, the application.

Description

Motor controller

The technical field is as follows:

the utility model relates to a motor controller.

Background art:

current current motor controller includes box, upper cover, main control board, drive plate, IGBT and film capacitor, is equipped with the cavity in the box, and the upper cover is installed at box upper seal cavity, and main control board, drive plate, IGBT and film capacitor install in the cavity, and the IGBT passes through the copper bar and is connected with the drive plate, connects the inherent cavity below of box and is equipped with water-cooling heat dissipation channel, and the water injection well choke is installed in box one side and is connected with water-cooling heat dissipation channel. Due to the characteristics of the IGBT, the heat generation quantity is larger under the condition of higher frequency, the existing motor controller using the IGBT is suitable for 10kHz and lower frequency, and under the condition that the applicable frequency is more than 10kHz, the IGBT heat dissipation structure can not meet the use requirement.

The invention content is as follows:

the utility model aims at providing a motor controller can solve the current motor controller who uses IGBT and can't be applicable to higher operating frequency, the not good technical problem dispels the heat.

The purpose of the utility model is realized by the following technical scheme.

A first object of the utility model is to provide a motor controller, including box body and upper cover, be equipped with the cavity in the box body, install main control board and drive plate in the cavity, the upper cover is installed at box body top closed cavity, is equipped with water-cooling water course, its characterized in that at box body bottom wall: the drive plate is welded with a plurality of SiC modules and a film capacitor, the SiC modules are located beside the drive plate, a plurality of radiating fins are laid on the bottom surface of the cavity, the SiC modules are mounted on the radiating fins, a pressing plate is mounted above the SiC modules, and the pressing plate presses on the SiC modules to enable the SiC modules to be in contact with the radiating fins and enable the radiating fins to be in full contact with the bottom surface of the cavity.

The bottom surface of the cavity is provided with a plurality of mounting platforms protruding upwards, a plurality of protrusions are arranged on the periphery of the mounting platforms, grooves are formed beside the mounting platforms, the radiating fins are mounted on the mounting platforms, the protrusions limit the radiating fins, and partial edges of the radiating fins are located above the grooves.

The left and right sides of bottom surface respectively is provided with one row mounting platform, protruding including setting up the first arch between two adjacent mounting platforms, be equipped with the screw on the first arch, first protruding supporting the clamp plate is equipped with the through-hole with what the screw corresponds on the clamp plate, installs the screw in the through-hole, presses the clamp plate on the SiC module in the screw in screw of screw afterbody.

The radiating fin is an aluminum nitride ceramic substrate or a solid heat-conducting silica gel sheet.

And a shock pad is arranged between the pressure plate and the SiC module.

The thin film capacitor and the SiC module are respectively arranged on the upper side and the lower side of the drive plate, the SiC module is turned over from the bottom of the drive plate to the two sides of the drive plate, the side part of the thin film capacitor is tightly attached to the side wall of the cavity, the top part of the thin film capacitor is attached to the lower part of the upper cover, and the outer side surface of the box body is provided with a plurality of radiating teeth at the corresponding positions of the thin film.

The number of the SiC modules is 6N, the 6N SiC modules are divided into three groups, each group of SiC modules is 2N, wherein N is more than or equal to 2, the N SiC modules in each group of SiC modules are connected in parallel to form an upper bridge arm, the other N SiC modules in each group of SiC modules are connected in parallel to form a lower bridge arm, the upper bridge arm and the lower bridge arm are connected in series to form a bridge arm, the input end of the bridge arm is connected with the end of a direct current plug-in unit through a direct current terminal, the output end of the bridge arm is connected with a three-phase plug-in unit through a three-phase terminal, and the.

And two SiC modules are arranged on each radiating fin.

The bottom surface is equipped with a plurality of bumping posts, and the drive plate is installed on the bumping post by the bumping post bearing, and the shield plate is installed to the drive plate top, the main control board is installed on the shield plate, is connected through the connector between main control board and the drive plate.

Compared with the prior art, the utility model, following effect has:

1) the motor controller comprises a box body and an upper cover, a cavity is arranged in the box body, a main control board and a drive board are installed in the cavity, the upper cover is installed in the closed cavity at the top of the box body, and a water-cooling heat dissipation water channel is arranged on the wall face at the bottom of the box body and is characterized in that: the motor controller is characterized in that a plurality of SiC modules and a film capacitor are welded on the driving plate, the SiC modules are located beside the driving plate, a plurality of radiating fins are laid on the bottom surface of the cavity, the SiC modules are mounted on the radiating fins, a pressing plate is mounted above the SiC modules, the pressing plate presses the SiC modules to enable the SiC modules to be in contact with the radiating fins and enable the radiating fins to be in full contact with the bottom surface of the cavity, the SiC modules are adopted to replace IGBTs to serve as power elements, the motor controller is applicable to frequencies of more than 10KHz, the control speed of more than 100000rpm, and; the SiC module is fixed by the pressing plate, so that the SiC module is ensured to be in contact with the radiating fins and the bottom surfaces of the cavity are fully contacted, and the radiating effect is good.

2) Other advantages of the present invention will be described in detail in the examples section.

Description of the drawings:

fig. 1 is a perspective view of a motor controller according to an embodiment of the present invention;

FIG. 2 is a perspective view of another angle of the motor controller;

FIG. 3 is an exploded view of the motor controller;

FIG. 4 is a top view of the motor controller;

FIG. 5 is a sectional view A-A of FIG. 4;

FIG. 6 is a cross-sectional view B-B of FIG. 4;

FIG. 7 is a cross-sectional view C-C of FIG. 4;

FIG. 8 is a schematic structural view of the motor controller with the upper cover omitted;

FIG. 9 is a schematic structural view of the case of the motor controller after the heat sink is mounted thereon;

FIG. 10 is a schematic structural view of a case of the motor controller;

fig. 11 is a schematic block diagram of a motor controller.

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.

As shown in fig. 1 to 10, the present embodiment provides a motor controller, including box 11 and upper cover 12, be equipped with cavity 10 in the box 11, install main control board 2 and drive plate 3 in the cavity 10, upper cover 12 is installed at 11 top closed cavity 10 of box, is equipped with water-cooling heat dissipation water course 13 at 11 bottom wall of box, its characterized in that: the drive plate 3 is welded with a plurality of SiC modules 31 and a film capacitor 32, the SiC modules 31 are located beside the drive plate 3, a plurality of radiating fins 5 are laid on the bottom surface 101 of the cavity 10, the SiC modules 31 are installed on the radiating fins 5, a pressing plate 4 is installed above the SiC modules 31, and the pressing plate 4 presses on the SiC modules 31 to enable the SiC modules 31 to be in contact with the radiating fins 5 and enable the radiating fins 5 to be in full contact with the bottom surface 101 of the cavity 10. The SiC module 31 is adopted to replace an IGBT as a power element, so that the motor controller is applicable to the frequency of more than 10KHz, the control speed of more than 100000rpm, and the highest frequency can reach 150000rpm and 50 KHz; the application range is wide, the control is stable, the heat of the SiC module 31 is guided to the water-cooling radiator 13 through the radiating fins 5, the radiating effect is good, the SiC module 31 is fixed by the pressing plate 4, the SiC module 31 is guaranteed to be in contact with the radiating fins 5, the radiating fins 5 are enabled to be in full contact with the bottom surface 101 of the cavity 10, and the radiating effect is good.

The bottom surface 101 of the cavity 10 is provided with a plurality of mounting platforms 15 protruding upwards, a plurality of protrusions 16 are arranged around the mounting platforms 15, grooves 14 are formed beside the mounting platforms 15, the radiating fins 5 are mounted on the mounting platforms 15, the protrusions 16 limit the radiating fins 5, and part of edges of the radiating fins 5 are located above the grooves 14. The protrusion 16 is used for limiting the heat sink 5, and the groove 14 can facilitate the detachment of the heat sink 5.

The left side and the right side of the bottom surface 101 are respectively provided with one row of the mounting platforms 15, each protrusion 16 comprises a first protrusion 162 arranged between two adjacent mounting platforms 15, a screw hole 161 is formed in each first protrusion 162, the first protrusion 162 supports the pressing plate 4, a through hole 41 is formed in the pressing plate 4 corresponding to the screw hole 161, a screw is installed in each through hole 41, and the pressing plate 4 is pressed on the SiC module 31 by screwing the tail of the screw into the screw hole. Reasonable layout and convenient installation of the pressing plate 4.

The heat sink 5 is an aluminum nitride ceramic substrate or a solid heat-conducting silica gel sheet. The heat dissipation effect is good, and the cost is low.

Above-mentioned be equipped with the shock pad between clamp plate 4 and SiC module 31, the shock attenuation is effectual.

The film capacitor 32 and the SiC module 31 are respectively installed on the upper side and the lower side of the driving plate 3, the SiC module 31 is folded from the bottom of the driving plate 3 to the two sides of the driving plate 3, the side portion of the film capacitor 32 is attached to the side wall 102 of the cavity 10, the top portion of the film capacitor 32 is attached to the lower portion of the upper cover 12, and the outer side surface 17 of the box body 11 is provided with a plurality of heat dissipation teeth 18 at corresponding positions of the film capacitor 32. The film capacitor 32 and the upper cover 12 radiate heat simultaneously through the box body 11, and the heat radiation teeth 18 further enhance the heat radiation effect.

As shown in fig. 11, the number of SiC modules 31 is 6N, the 6N SiC modules 31 are divided into three groups, each group of SiC modules 31 is 2N, where N is greater than or equal to 2, each group of SiC modules 31 includes N SiC modules 31 connected in parallel to form an upper arm 311, another N SiC modules 31 connected in parallel to form a lower arm 312, the upper arm 311 and the lower arm 312 are connected in series to form an arm 310, an input end of the arm 310 is connected to the end of the dc plug-in 61 through the dc terminal 33, an output end of the arm 310 is connected to the three-phase plug-in 62 through the three-phase terminal 34, and the three-phase plug-in 62 is connected to the U, V, W-phase coil winding of the motor.

Two SiC modules 31 are mounted on each of the above-described heat sinks 5.

The bottom surface 101 is provided with a plurality of spacers 103, the driving plate 3 is mounted on the spacers 103 and supported by the spacers 103, the shielding plate 21 is mounted above the driving plate 3, the main control plate 2 is mounted on the shielding plate 21, and the main control plate 2 is connected with the driving plate 3 through the connector 22.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.

Claims

1. The utility model provides a motor controller, includes box body (11) and upper cover (12), is equipped with cavity (10) in box body (11), installs main control board (2) and drive plate (3) in cavity (10), and upper cover (12) are installed and are being equipped with water-cooling heat dissipation water course (13), its characterized in that at box body (11) bottom wall in box body (11) top closed cavity (10): the welding has a plurality of SiC modules (31) and film capacitor (32) on drive plate (3), SiC module (31) are located by drive plate (3), bottom surface (101) of cavity (10) have been laid a plurality of fin (5), SiC module (31) are installed on fin (5), clamp plate (4) are installed to SiC module (31) top, clamp plate (4) are pressed and are made SiC module (31) and fin (5) contact and make bottom surface (101) full contact of fin (5) and cavity (10) on SiC module (31).

2. A motor controller according to claim 1, wherein: bottom surface (101) of cavity (10) upwards the protrusion have a plurality of mounting platform (15), have a plurality of archs (16) around mounting platform (15), and mounting platform (15) are other to be equipped with recess (14), and fin (5) are installed on mounting platform (15), and arch (16) are spacing to fin (5), and the partial edge of fin (5) is located recess (14) top.

3. A motor controller according to claim 2, wherein: the left and right sides of bottom surface (101) respectively is provided with one row mounting platform (15), protruding (16) are equipped with screw (161) including setting up first protruding (162) between two adjacent mounting platform (15) on first protruding (162), first protruding (162) supporting clamp plate (4), and what correspond with screw (161) on clamp plate (4) is equipped with through-hole (41), installs the screw in through-hole (41), presses clamp plate (4) on SiC module (31) in the screw in afterbody screw.

4. A motor controller according to claim 3, wherein: the radiating fins (5) are aluminum nitride ceramic substrates or solid heat conducting silica gel sheets.

5. A motor controller according to claim 4, wherein: and a shock pad is arranged between the pressing plate (4) and the SiC module (31).

6. A motor controller according to any one of claims 1 to 5, wherein: the thin film capacitor (32) and the SiC module (31) are respectively installed on the upper side and the lower side of the driving plate (3), the SiC module (31) is turned over to the two sides of the driving plate (3) from the bottom of the driving plate (3), the side portion of the thin film capacitor (32) is tightly attached to the side wall (102) of the cavity (10), the top portion of the thin film capacitor (32) is attached to the lower portion of the upper cover (12), and a plurality of heat dissipation teeth (18) are arranged on the outer side face (17) of the box body (11) in the corresponding position of the thin film capacitor (32.

7. A motor controller according to claim 6, wherein: the number of the SiC modules (31) is 6N, the 6N SiC modules (31) are divided into three groups, each group of SiC modules (31) is 2N, wherein N is larger than or equal to 2, an upper bridge arm (311) is formed by connecting the N SiC modules (31) in parallel in each group of SiC modules (31), the other N SiC modules (31) are connected in parallel to form a lower bridge arm (312), the upper bridge arm (311) and the lower bridge arm (312) are connected in series to form a bridge arm (310), the input end of the bridge arm (310) is connected with the end of a direct current plug-in unit (61) through a direct current terminal (33), the output end of the bridge arm (310) is connected with a three-phase plug-in unit (62) through a three-phase terminal (34), and the three-phase plug-in unit (62) is connected.

8. A motor controller according to claim 7, wherein: two SiC modules (31) are mounted on each of the heat sinks (5).

9. A motor controller according to claim 8, wherein: bottom surface (101) are equipped with a plurality of spacer columns (103), and drive plate (3) are installed and are supported by spacer column (103) on spacer column (103), and shielding plate (21) are installed to drive plate (3) top, main control board (2) are installed on shielding plate (21), are connected through connector (22) between main control board (2) and the drive plate (3).