CN117674615A

CN117674615A - Motor control module with water cooling structure

Info

Publication number: CN117674615A
Application number: CN202311632942.7A
Authority: CN
Inventors: 唐建; 柳贤桂; 曹冠晖
Original assignee: Zhejiang Aosiweier Electric Technology Co ltd
Current assignee: Zhejiang Aosiweier Electric Technology Co ltd
Priority date: 2023-11-29
Filing date: 2023-11-29
Publication date: 2024-03-08

Abstract

The invention discloses a motor control module with water cooling, which comprises: the IGBT module comprises a driving module driving plate, a power generation module driving plate, an oil pump module driving plate, a liquid cooling plate and a PCBA positioning plate, wherein the IGBT module comprises a first IGBT group, a second IGBT group and a third IGBT group; the liquid cooling plate is provided with an avoidance channel, the avoidance channel penetrates through the liquid cooling plate, and an external electric element is electrically connected with the IGBT module positioned on the other side of the liquid cooling plate through the avoidance channel from one side of the liquid cooling plate.

Description

Motor control module with water cooling structure

Technical Field

The application discloses a controller, especially, relate to a motor control module of area water-cooling.

Background

The existing motor control system of the electric or hybrid electric vehicle mainly comprises an inverter and a control board, wherein the inverter converts direct current and alternating current to output alternating current for supplying power to a motor, and the control board controls the output of the inverter. The inverter is usually formed by combining a capacitor module, an IGBT module and a driving module, and the existing inverter adopts an integrated packaging module, so that the manufacturing cost is high, the size is large, the vibration resistance is weak, and the integration level of a motor control system directly using the integrated inverter is low, the heat dissipation effect is poor and the universality is low.

Disclosure of Invention

Aiming at the defects of low integration level, poor heat dissipation effect and the like of a motor control system directly using an integrated inverter in the prior art, the invention provides a novel motor control module with water cooling.

In order to solve the technical problems, the invention is realized by the following technical scheme:

a motor control module with water cooling, a conversion element and a control element for controlling electric energy conversion, comprising:

the IGBT module is connected in parallel by a plurality of IGBT single tubes and is used for controlling the conversion and transmission of electric energy;

the driving plate assembly comprises a driving module driving plate, a power generation module driving plate and an oil pump module driving plate and is used for driving the IGBT module to work;

the liquid cooling plate is used as a carrier of the IGBT module and the driving module and performs heat exchange with the IGBT module;

the PCBA locating plates are used for locating a plurality of IGBT single tubes;

the IGBT module comprises a first IGBT group, a second IGBT group and a third IGBT group, the first IGBT group is electrically connected with the driving module driving plate, the second IGBT group is electrically connected with the power generation module driving plate, and the third IGBT group is electrically connected with the oil pump module driving plate;

the liquid cooling plate is provided with an avoidance channel, the avoidance channel penetrates through the liquid cooling plate, and an external electric element is electrically connected with the IGBT module located on the other side of the liquid cooling plate through the avoidance channel from one side of the liquid cooling plate.

The IGBT module is formed by connecting IGBT single tubes in parallel, the PCBA positioning plate plays a role in positioning the IGBT single tubes, and the IGBT module adopts a single tube parallel connection mode, so that the volume is smaller, the cost is lower, and the stability is stronger; after the IGBT module, the liquid cooling plate and the driving plate assembly are modularized together, the integrated inverter is different from the application of the traditional integrated inverter in a motor control system, has higher integration level and better heat dissipation effect, is convenient for platform use, and is easy to transplant and has universality.

The following provides several alternatives, but not as additional limitations to the above-described overall scheme, and only further additions or preferences, each of which may be individually combined for the above-described overall scheme, or may be combined among multiple alternatives, without technical or logical contradictions.

Optionally, the terminal of IGBT single tube is towards dodge the passageway setting, PCBA locating plate is located dodge passageway department.

Optionally, the avoidance channel is arranged opposite to the center of the liquid cooling plate, the liquid cooling plate is provided with a liquid flow channel for flowing a heat exchange medium, and the liquid flow channel is arranged around the avoidance channel.

Optionally, the liquid cooling board have with the first heat transfer area, second heat transfer area, the third heat transfer area of IGBT module adaptation, first heat transfer area, second heat transfer area, third heat transfer area are established respectively and are provided with ceramic conducting strip, the laminating of IGBT module the ceramic conducting strip.

Optionally, the liquid cooling board includes liquid cooling board main part, apron, dodge passageway and liquid runner all are located in the liquid cooling board main part, the liquid runner is including first cavity, second cavity, the third cavity of mutual intercommunication, first cavity, second cavity are located dodge the both sides of passageway, the third cavity with first cavity is adjacent, the apron lid closes first cavity, second cavity, third cavity.

Optionally, the first chamber, the second chamber, the third chamber correspond respectively first heat transfer area, second heat transfer area, third heat transfer area, all set up the heat conduction post of a plurality of in first chamber, second chamber, the third chamber, the chamber wall that is close to heat transfer area one side in the chamber of heat conduction post one end connection each place.

Optionally, the third chamber is internally provided with a guide fin, the guide fin is arranged along the flowing direction of the heat exchange medium in the third chamber, and the guide fin is connected with the chamber wall of one side of the third chamber, which is close to the third heat exchange area.

Optionally, the IGBT monotube compress tightly through the pressure spring and make it with the laminating of liquid cooling board, the liquid cooling board has the screw that is used for connecting the fastener, the pressure spring passes through the fastener with the cooperation of screw is fixed on the liquid cooling board.

Optionally, the liquid cooling plate main body has relative up end and lower terminal surface, first heat transfer area, second heat transfer area, third heat transfer area are located the up end of liquid cooling plate main body, first cavity, second cavity, third cavity are located the lower terminal surface of liquid cooling plate main body, the screw is located the outside of up end and with first heat transfer area, second heat transfer area are adjacent.

Optionally, the liquid flow channel has a liquid inlet and a liquid outlet which are opposite, the liquid inlet and the liquid outlet are arranged on the cover plate, the liquid inlet is positioned at the head end of the liquid flow channel, and the liquid outlet is positioned at the tail end of the liquid flow channel.

The beneficial effects of this application lie in: after the IGBT module, the liquid cooling plate and the driving plate assembly are modularized together, the integrated inverter is different from the application of the traditional integrated inverter in a motor control system, has higher integration level and better heat dissipation effect, is convenient for platform use, and is easy to transplant and has universality.

Drawings

FIG. 1 is an exploded view of one embodiment of the present application;

FIG. 2 is a schematic top view of an embodiment of the present application;

FIG. 3 is a schematic view illustrating a bottom view of an embodiment of the present application;

FIG. 4 is a schematic top view of a liquid cooling plate according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram illustrating a structure of a liquid cooling plate main body in a bottom view according to an embodiment of the present disclosure;

fig. 6 is an exploded view of a controller according to another embodiment of the present application.

The drawings in the drawings are described as follows:

1. an IGBT module; 11. IGBT single tube; 12. PCBA locating plate;

2. a liquid cooling plate; 22. a liquid inlet; 23. a liquid outlet; 24. an avoidance channel; 25. a liquid flow channel; 251. a first chamber; 252. a second chamber; 253. a third chamber; 254. a heat conducting column; 255. a guide fin; 26. a pressure spring; 27. ceramic heat conducting fins; 28. a liquid cooling plate main body; 281. a first heat exchange zone; 282. a second heat exchange zone; 283. a third heat exchange zone; 29. a cover plate;

3. a drive plate assembly; 31. the driving module drives the plate; 32. a power generation module driving plate; 33. an oil pump module driving plate;

4. a thin film capacitor assembly; 5. a controller housing; 51. an upper housing; 52. a lower housing; 521. an interface plug-in; 522. a liquid inlet nozzle; 523. a liquid outlet nozzle; 53. a DC input port; 54. an AC input port;

6. a control circuit board; 61. and a shielding plate.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-5, in one embodiment of the present application, a motor control module with water cooling is disclosed, a conversion element and a control element for controlling electric energy conversion, including: the IGBT module 1 is used for controlling electric energy conversion and transmission, the driving plate assembly 3 is used for driving the IGBT module 1 to work, and the liquid cooling plate 2 is used for cooling the IGBT module 1.

The driving plate assembly 3 comprises a driving module driving plate 31, a power generation module driving plate 32 and an oil pump module driving plate 33; the IGBT module 1 includes a first IGBT group, a second IGBT group, and a third IGBT group. Correspondingly, the driving module driving board 31 controls the first IGBT group to convert the input direct current into alternating current with a specific voltage for outputting, the power generation module driving board 32 controls the second IGBT group to convert the input alternating current into alternating current with a specific voltage for outputting, and the oil pump module driving board 33 controls the third IGBT group to convert the input direct current into alternating current with a specific voltage for outputting.

The alternating current of the above-described specific voltage is generally set with respect to a rated voltage of a load of the vehicle, the load including a motor, an oil pump, an air conditioner, and the like.

Further, the IGBT module 1 is formed by connecting a plurality of IGBT single tubes 11 in parallel, the surface of one side of the liquid cooling plate 2 is used as a carrier for carrying the IGBT single tubes 11, each IGBT single tube 11 is fixed on the liquid cooling plate 2, and the driving module driving plate 31, the power generation module driving plate 32, and the oil pump module driving plate 33 are stacked above the respective corresponding first, second, and third IGBT groups.

Further comprises: the PCBA positioning plate 12, the PCBA positioning plate 12 fixes the terminals of each IGBT single tube 11, and plays a role in positioning the IGBT module 1.

Referring to fig. 4, in some embodiments of the present application, for facilitating the electrical connection of the IGBT module 1, the liquid cooling plate 2 is provided with an avoidance channel 24, and the avoidance channel 24 penetrates through the liquid cooling plate 2, so that an external electrical element is electrically connected from one side of the liquid cooling plate 2 through the avoidance channel 24 and the IGBT module 1 located at the other side of the liquid cooling plate 2.

Further, the terminals of the IGBT single tubes 11 are arranged towards the avoidance channel 24, the PCBA positioning plate 12 is located at the avoidance channel 24, the terminals of the IGBT single tubes 11 are fixed, the distance between the external electric elements and the terminals of the IGBT single tubes 11 is shortened, and the integration level is improved.

For the IGBT single tube 11 of adaptation a large amount, dodge passageway 24 for the center setting of liquid cooling board 2 for will dodge passageway 24 and set up the scheme at liquid cooling board 2 edge, dodge passageway 24 when being located the center setting of liquid cooling board 2, dodge passageway 24 both sides homoenergetic can arrange IGBT single tube 11 to make further promotion for the integrated level of IGBT module 1.

Referring to fig. 5, a liquid flow channel 25 is disposed in the liquid cooling plate 2, the liquid flow channel 25 is used for flowing a heat exchange medium, and the heat exchange medium can take away heat of the liquid cooling plate 2, so as to provide cooling and heat dissipation for the liquid cooling plate 2.

In order to provide better heat dissipation effect, the liquid cooling plate 2 comprises a liquid cooling plate main body 28 and a cover plate 29, the avoidance channel 24 and the liquid flow channel 25 are positioned on the liquid cooling plate main body 28, the liquid flow channel 25 comprises a first chamber 251, a second chamber 252 and a third chamber 253 which are mutually communicated, the first chamber 251 and the second chamber 252 are positioned on two sides of the avoidance channel 24, the third chamber 253 is adjacent to the first chamber 251, and the cover plate 29 covers the first chamber 251, the second chamber 252 and the third chamber 253.

Further, the liquid cooling plate main body 28 is provided with a first heat exchange area 281, a second heat exchange area 282 and a third heat exchange area 283 which are matched with the IGBT module 1, the first heat exchange area 281, the second heat exchange area 282 and the third heat exchange area 283 are respectively provided with the ceramic heat conducting fins 27, the ceramic heat conducting fins 27 have excellent heat conducting efficiency, the IGBT module 1 is attached to the ceramic heat conducting fins 27, heat is transferred to the liquid cooling plate 2 through the ceramic heat conducting fins 27, the contact area between the IGBT module 1 and the liquid cooling plate 2 is increased by phase change, and heat dissipation is accelerated.

The first chamber 251, the second chamber 252, and the third chamber 253 correspond to the first heat exchange area 281, the second heat exchange area 282, and the third heat exchange area 283, and a plurality of heat conductive columns 254 are disposed in the first chamber 251, the second chamber 252, and the third chamber 253, and the heat conductive columns 254 can increase the contact area with the heat exchange medium to increase the heat exchange efficiency. Further, the heat conducting columns 254 are connected to the wall of the chamber near the heat exchange area in the chamber, so as to absorb the heat of the corresponding heat exchange area, and make the heat exchange efficiency higher.

In some embodiments of the present application, referring to fig. 5, the third chamber 253 is located at one side of the first chamber 251, and there may be a phenomenon that the heat exchange medium flows poorly in the third chamber 253. Therefore, the third chamber 253 is provided with the guide fins 255, the guide fins 255 are connected to the cavity wall of the third chamber 253 at the side close to the third heat exchange area 283, the guide fins 255 are arranged along the flow direction of the heat exchange medium in the third chamber 253, the guide fins 255 play a role in guiding the heat exchange medium, so that the heat exchange medium is prevented from being retained in the third chamber 253, and the heat exchange efficiency is improved from the aspects of increasing the contact area and accelerating the flow of the heat exchange medium in the third chamber 253.

For the IGBT single tube 11 is more tightly connected with the liquid cooling plate 2, referring to fig. 1, the IGBT single tube 11 is tightly pressed by a pressure spring 26 to be attached to the liquid cooling plate 2, the liquid cooling plate 2 is provided with a screw hole for connecting a fastener, the pressure spring 26 is fixed on the liquid cooling plate 2 through the matching of the fastener and the screw hole, one side of the pressure spring 26 is connected with the liquid cooling plate 2, and the other side is tightly pressed by the IGBT single tube 11.

As shown in fig. 5, the liquid cooling plate main body 28 has an upper end face and a lower end face opposite to each other, the upper end face is used for contacting with the IGBT module 1 to perform heat exchange, the first heat exchange area 281, the second heat exchange area 282, and the third heat exchange area 283 are located on the upper end face of the liquid cooling plate main body 28, the first chamber 251, the second chamber 252, and the third chamber 253 are located on the lower end face of the liquid cooling plate main body 28, and screw holes are disposed corresponding to the first heat exchange area 281 and the second heat exchange area 282 and avoid the first heat exchange area 281 and the second heat exchange area 282. To facilitate the fixation of the compression spring 26, screw holes are adjacent to the first heat exchange area 281 and the second heat exchange area 282.

Referring to fig. 3, the liquid flow channel 25 has a liquid inlet 22 and a liquid outlet 23 opposite to each other, the liquid inlet 22 and the liquid outlet 23 are disposed on the cover 29, the liquid inlet 22 is disposed at a position of the cover 29 corresponding to the first chamber 251, the liquid outlet 23 is disposed at a position of the cover 29 corresponding to the second chamber 252, the liquid inlet 22 is located at an initial position of the end of the first chamber 251 forming the liquid flow channel 25, and the liquid outlet 23 is located at an end position of the end of the second chamber 252 forming the liquid flow channel 25, so that a flowing distance of the heat exchange medium in the liquid cooling plate 2 is maximized, and heat dissipation efficiency is improved.

An embodiment of the application discloses a controller with a water-cooled motor control module in the embodiment, which is used for connecting a power supply system and a load system of a whole vehicle and is used as an input-output conversion and control device between the power supply system and the load system of the whole vehicle.

The power supply system, as a storage and output element of the whole vehicle energy, may be a battery pack, and may further include other electric energy output devices, for example: the internal combustion engine and the generator are combined to generate electricity; the vehicle load includes a motor and may also include other on-board electrical equipment, such as: air conditioning, water pump, oil pump, etc. The controller converts the output power of the power supply system into the input power which is adaptive to the load of the vehicle and controls the input power, so that the control of the load of the vehicle is realized.

The controller in this application has a DC input port 53 for receiving direct current from the battery pack and an AC input port 54 for receiving alternating current from the generator.

The controller includes: the motor control module is used for filtering and stabilizing the voltage of the thin film capacitor assembly 4 and is used for controlling the control circuit board 6 for controlling the operation of the driving board assembly 3.

The motor control module includes: the IGBT module 1 is used for controlling electric energy conversion and transmission, the driving plate assembly 3 is used for driving the IGBT module 1 to work, and the liquid cooling plate 2 is used for providing heat dissipation.

The IGBT module 1 can implement conversion between ac and dc, and change the voltage level, wherein the dc is an output power source of a battery pack, and the ac is an input power source of a vehicle load.

The controller further includes: the controller housing 5, which is formed by the lower housing 52 with the accommodating cavity and the upper housing 51 covering the accommodating cavity, is arranged in the accommodating cavity, and the controller housing 5 is used as a bearing and protecting device for the internal electric elements of the controller housing, wherein the IGBT module 1, the thin film capacitor assembly 4, the driving board assembly 3, the control circuit board 6 and the liquid cooling board 2 are arranged in the accommodating cavity.

In order to improve heat exchange efficiency, the liquid cooling plate 2, the IGBT module 1 and the thin film capacitor assembly 4 are arranged in a lamination mode, the surfaces of the upper side and the lower side of the liquid cooling plate 2 are respectively contacted with the IGBT module 1 and the thin film capacitor assembly 4, and the surfaces of the liquid cooling plate 2 are fully utilized to dissipate heat.

In order to effectively improve the space utilization and improve the integration level of the controller, the IGBT module 1, the thin film capacitor assembly 4, the driving plate assembly 3 and the control circuit board 6 are sequentially overlapped in parallel from bottom to top in the accommodating cavity. The drive plate assembly 3 comprises a drive module drive plate 31, a power generation module drive plate 32 and an oil pump module drive plate 33, wherein the drive module drive plate 31, the power generation module drive plate 32 and the oil pump module drive plate 33 are tiled above the IGBT module 1, so that mutual superposition is avoided, and heat accumulation is caused.

In order to eliminate electromagnetic interference of the driving board assembly 3 to the control circuit board 6, a shielding board 61 is disposed between the driving board assembly 3 and the control circuit board 6.

A plurality of interface plugs 521 are provided around the periphery of the lower housing 52 as ports for communicating with the outside as receiving cavities inside the lower housing 52 for connecting to the vehicle load. The output end of the drive board assembly 3 corresponds to each interface plug-in 521 on the lower housing 52 for outputting electric energy.

The DC input port 53 and the AC input port 54 are located on the lower housing 52.

In summary, the foregoing description is only of the preferred embodiments of the present invention, and all equivalent changes and modifications that come within the scope of the present invention are desired to be covered thereby.

Claims

1. A motor control module with water cooling, a conversion element and a control element for controlling electric energy conversion, comprising:

2. The water-cooled motor control module of claim 1, wherein: the terminal of IGBT single tube orientation dodges the passageway setting, PCBA locating plate is located dodge passageway department.

3. The water-cooled motor control module of claim 2, wherein: the dodging channel is arranged relative to the center of the liquid cooling plate, the liquid cooling plate is provided with a liquid flow channel for flowing heat exchange medium, and the liquid flow channel is arranged around the dodging channel.

4. A water-cooled motor control module as recited in claim 3, wherein: the liquid cooling plate is provided with a first heat exchange area, a second heat exchange area and a third heat exchange area which are matched with the IGBT module, ceramic heat conducting sheets are respectively arranged in the first heat exchange area, the second heat exchange area and the third heat exchange area, and the IGBT module is attached to the ceramic heat conducting sheets.

5. The water-cooled motor control module of claim 4, wherein: the liquid cooling plate comprises a liquid cooling plate main body and a cover plate, wherein the avoidance channel and the liquid flow channel are both positioned on the liquid cooling plate main body, the liquid flow channel comprises a first cavity, a second cavity and a third cavity which are mutually communicated, the first cavity and the second cavity are positioned on two sides of the avoidance channel, the third cavity is adjacent to the first cavity, and the cover plate covers the first cavity, the second cavity and the third cavity.

6. The water-cooled motor control module of claim 5, wherein: the first chamber, the second chamber and the third chamber respectively correspond to the first heat exchange area, the second heat exchange area and the third heat exchange area, a plurality of heat conduction columns are arranged in the first chamber, the second chamber and the third chamber, and one ends of the heat conduction columns are connected with the chamber walls, close to one side of the heat exchange areas, in the chambers where the heat conduction columns are arranged.

7. The water-cooled motor control module of claim 5, wherein: the third chamber is internally provided with a guide fin which is arranged along the flowing direction of the heat exchange medium in the third chamber, and the guide fin is connected with the chamber wall of one side of the third chamber, which is close to the third heat exchange area.

8. The water-cooled motor control module of claim 6, wherein: IGBT monotube compress tightly through the pressure spring and make it with the laminating of liquid cooling board, the liquid cooling board has the screw that is used for connecting the fastener, the pressure spring passes through the fastener with the cooperation of screw is fixed on the liquid cooling board.

9. The water-cooled motor control module of claim 8, wherein: the liquid cooling plate main body is provided with an upper end face and a lower end face which are opposite, the first heat exchange area, the second heat exchange area and the third heat exchange area are located on the upper end face of the liquid cooling plate main body, the first chamber, the second chamber and the third chamber are located on the lower end face of the liquid cooling plate main body, and the screw hole is located on the outer side of the upper end face and adjacent to the first heat exchange area and the second heat exchange area.

10. The water-cooled motor control module of claim 9, wherein: the liquid runner is provided with a liquid inlet and a liquid outlet which are opposite, the liquid inlet and the liquid outlet are arranged on the cover plate, the liquid inlet is positioned at the head end of the liquid runner, and the liquid outlet is positioned at the tail end of the liquid runner.