CN214707588U

CN214707588U - Motor controller and vehicle

Info

Publication number: CN214707588U
Application number: CN202120908460.XU
Authority: CN
Inventors: 杨广明; 齐阿喜; 张星春; 喻凤传; 刘晗月
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-11-12
Anticipated expiration: 2031-04-28

Abstract

The utility model discloses a motor controller, including heat radiation structure, heat radiation structure includes: the liquid cooling device comprises a liquid cooling shell, a liquid cooling device and a control device, wherein a cooling cavity is defined in the liquid cooling shell, the liquid cooling shell is provided with a liquid inlet and a liquid outlet which are communicated with the cooling cavity, and two opposite side walls of the cooling cavity are respectively provided with an inserting hole and an inserting hole; IGBT module, the IGBT module inserts the cooling chamber through the patchhole, the relative both sides surface of IGBT module thickness direction all forms the liquid clearance with the inner wall of cooling chamber, the one end of IGBT module has direct current connecting piece and the other end has alternating current connecting piece, direct current connecting piece stretches out the cooling chamber from patchhole and one in the plug-in hole, alternating current connecting piece stretches out the cooling chamber from patchhole and another in the plug-in hole, the both ends of IGBT module all with the liquid cooling casing seal with seal the patchhole with plug-in hole. According to the utility model discloses machine controller can carry out two-sided cooling to the IGBT module, has that the cooling effect is good, simple process is reliable, with low costs, disturb advantage such as little.

Description

Motor controller and vehicle

Technical Field

The utility model belongs to the technical field of the vehicle technique and specifically relates to a machine controller and vehicle are related to.

Background

In the related art vehicle, the motor controller is one of the core components of the vehicle, and the power density of the motor controller largely depends on the heat dissipation effect thereof. Therefore, the heat dissipation of some motor controllers to IGBT (insulated gate bipolar transistor) modules is changed from single surface to double surfaces, each IGBT module is accommodated between two water channel plates, and the two water channel plates are sealed through brazing.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a motor controller, this motor controller can carry out two-sided cooling to the IGBT module, has that the cooling effect is good, simple process is reliable, with low costs, disturb advantage such as little.

The utility model also provides a vehicle of having above-mentioned machine controller.

To achieve the above object, according to the embodiment of the first aspect of the present invention, there is provided a motor controller, including a heat dissipation structure, the heat dissipation structure includes: the liquid cooling device comprises a liquid cooling shell, a liquid cooling device and a control device, wherein a cooling cavity is defined in the liquid cooling shell, the liquid cooling shell is provided with a liquid inlet and a liquid outlet which are communicated with the cooling cavity, and two opposite side walls of the cooling cavity are respectively provided with an insertion hole and an insertion hole; the IGBT module, the IGBT module passes through the patchhole inserts cooling chamber, the relative both sides surface of IGBT module thickness direction all with cooling chamber's inner wall forms the liquid clearance, the one end of IGBT module has direct current connecting piece and the other end has an interchange connecting piece, direct current connecting piece follows the patchhole with insert one in the hole and stretch out cooling chamber, it follows to exchange the connecting piece the patchhole with another in inserting the hole stretches out cooling chamber, the both ends of IGBT module all with the liquid cooling casing is sealed in order to seal the patchhole with insert the hole.

According to the utility model discloses machine controller can carry out two-sided cooling to the IGBT module, has that the cooling effect is good, simple process is reliable, with low costs, disturb advantage such as little.

According to some embodiments of the present invention, the inner peripheral wall surface of the insertion hole is configured with a stopper ring edge extending along a circumferential direction thereof; an axial sealing ring is arranged at one end of the IGBT module and is in interference fit with the surface of the limiting ring edge facing the cooling cavity; and the other end of the IGBT module is provided with a radial sealing ring, and the radial sealing ring is in interference fit with the inner peripheral wall surface of the insertion hole.

Furthermore, one end of the IGBT module is provided with a ring groove with an opening facing the edge of the limiting ring, and the axial sealing ring is assembled in the ring groove; the other end of the IGBT module is provided with an injection molding piece, and the radial sealing ring is formed by injection molding of the injection molding piece twice.

According to some embodiments of the utility model, the IGBT module has the baffle, the baffle is located the cooling chamber is outer and the backstop in being equipped with of liquid cooling casing one side of patchhole, the baffle pass through the fastener install in the liquid cooling casing.

According to some embodiments of the utility model, the relative both sides surface of IGBT module thickness direction is equipped with the heating panel respectively, every the orientation of heating panel the surface of cooling chamber's internal face is equipped with a plurality of heat dissipation needles.

According to some embodiments of the utility model, be equipped with of liquid cooling casing the surface of inserting the hole is equipped with the inclined plane, the inclined plane centers on insert the hole setting, the inclined plane to the direction of inserting the hole gradually to cooling chamber's inside slope.

According to some embodiments of the present invention, the number of the cooling chambers is plural, and the liquid inlet, the plural cooling chambers and the liquid outlet are sequentially communicated; the IGBT modules are multiple, and the IGBT modules are inserted into the cooling chambers in a one-to-one correspondence mode.

Further, the inlet is arranged at one end of the liquid cooling shell, the liquid outlet is arranged at the other end of the liquid cooling shell, the cooling chambers are arranged along the length direction of the liquid cooling shell, the insertion holes are arranged on one side surface of the liquid cooling shell in the width direction, and the insertion holes are arranged on the other side surface of the liquid cooling shell in the width direction.

According to some embodiments of the present invention, the plurality of cooling chambers includes a first cooling chamber, a second cooling chamber and a third cooling chamber, the first cooling chamber, the second cooling chamber and the third cooling chamber are arranged in sequence from the liquid inlet to the liquid outlet, the first cooling chamber and the second cooling chamber are communicated through a first via hole, and the second cooling chamber and the third cooling chamber are communicated through a second via hole; the central axis of the liquid inlet and the central axis of the first via hole coincide and are higher than the central axis of the liquid cooling shell, and the central axis of the liquid outlet and the central axis of the second via hole coincide and are not higher than the central axis of the liquid cooling shell.

According to some embodiments of the present invention, the dc connector comprises a first dc negative input copper bar, a dc positive input copper bar, and a second dc negative input copper bar; the alternating current connecting piece comprises an alternating current output copper bar; and the other end of the IGBT module is also provided with a signal lead.

According to some embodiments of the invention, the cooling chamber is arranged axially horizontally; or the axial direction of the cooling chamber is vertically arranged.

According to the utility model discloses an embodiment of second aspect provides a vehicle, the vehicle includes: according to the utility model discloses an embodiment of first aspect motor controller.

According to the utility model discloses vehicle, through utilizing according to the utility model discloses an embodiment of first aspect motor controller, have that motor control is effectual, simple process is reliable, with low costs, disturb advantage such as little.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a motor controller according to an embodiment of the present invention;

fig. 2 is an exploded view of a motor controller according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a liquid-cooled housing of a motor controller according to an embodiment of the present invention;

fig. 4 is a schematic view of another angle of a liquid cooled housing of a motor controller according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of an axial horizontal arrangement of cooling chambers of a motor controller according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of an axial vertical arrangement of cooling chambers of a motor controller according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of an IGBT module of a motor controller according to an embodiment of the present invention.

Reference numerals:

a motor controller 1,

A liquid cooling housing 100, a cooling chamber 110, a liquid passing gap 101, a liquid inlet 120, a liquid outlet 130, an insertion hole 140, an insertion hole 150, a limiting ring edge 151, an inclined surface 152, a first cooling chamber 111, a second cooling chamber 112, a liquid cooling chamber,

A third cooling chamber 113, a first via hole 114, a second via hole 115, a fixing post 160, a supporting post 170,

IGBT module 200, direct current connector 201, alternating current connector 202, axial sealing ring 211, radial sealing ring 221, annular groove 212, baffle 220, fastener 222, heat dissipation plate 203, heat dissipation needle 204,

A first direct current negative electrode input copper bar 21, a direct current positive electrode input copper bar 22, a second direct current negative electrode input copper bar 23,

Alternating current output copper bar 24 and signal lead 25.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more, and "a plurality" means one or more.

The following describes a motor controller 1 according to an embodiment of the present invention with reference to the drawings.

As shown in fig. 1-7, the motor controller 1 according to the embodiment of the present invention includes a heat dissipation structure, and the heat dissipation structure includes: a liquid cooled housing 100 and an IGBT module 200.

The liquid-cooled housing 100 defines a cooling chamber 110 therein, the liquid-cooled housing 100 is provided with a liquid inlet 120 and a liquid outlet 130 communicating with the cooling chamber 110, and two opposite sidewalls of the cooling chamber 110 are respectively provided with an insertion hole 140 and an insertion hole 150. The IGBT module 200 is inserted into the cooling chamber 110 through the insertion hole 140, opposite side surfaces in the thickness direction of the IGBT module 200 each form a liquid passing gap 101 with an inner wall of the cooling chamber 110, one end of the IGBT module 200 has a direct current connector 201 and the other end has an alternating current connector 202, the direct current connector 201 protrudes from one of the insertion hole 140 and the insertion hole 150 out of the cooling chamber 110, the alternating current connector 202 protrudes from the other of the insertion hole 140 and the insertion hole 150 out of the cooling chamber 110, and both ends of the IGBT module 200 are sealed with the liquid-cooled housing 100 to close the insertion hole 140 and the insertion hole 150.

For example, the liquid cooling housing 100 is a rectangular parallelepiped, and is formed by die casting and machining, the IGBT module 200 is provided with a wafer assembly having a large heat value between the dc connector 201 and the ac connector 202, and the IGBT module 200 plays a role in waterproofing between the dc connector 201 and the ac connector 202 by covering a waterproof member (e.g., a plastic housing). The ac connector 202 extends from the insertion hole 140 of the liquid-cooled casing 100, and the dc connector 201 extends from the insertion hole 150 of the liquid-cooled casing 100. Both ends of the IGBT module 200 are sealed with the liquid-cooled housing 100 while the middle portion of the IGBT module 200 is in the cooling chamber 110. The liquid cooling housing 100 is filled with cooling liquid from the liquid inlet 120, and the cooling liquid flows to the cooling chamber 110 and passes through the liquid passing gap 101, cools the IGBT module 200, and then flows out from the liquid outlet 130.

According to the utility model discloses motor controller 1, through construct the patchhole 140 and insert hole 150 at liquid cooling casing 100, make IGBT module 200 can insert and insert from patchhole 140 and insert out from inserting hole 150, IGBT module 200's main part is located cooling chamber 110 and is wrapped by cooling chamber 110, IGBT module 200 thickness direction's relative both sides surface all forms liquid clearance 101 with cooling chamber 110's inner wall, thereby IGBT module 200 thickness direction's relative both sides face is soaked by the coolant liquid completely, IGBT module 200 calorific capacity great part and coolant liquid have bigger contact cooling area, thereby realize two-sided heat dissipation, and shield effectually.

Furthermore, the two ends of the IGBT module 200 are sealed with the liquid cooling housing 100 to form a sealed cooling liquid flow path between the liquid cooling housing 100 and the IGBT module 200, so as to seal the insertion hole 140 and the insertion hole 150 for inserting the IGBT module 200, so that the liquid cooling housing 100 can be an integral piece, and no additional welding or other connection processes are required, the production process is simpler, the cost is lower, the liquid cooling housing 100 can adapt to the IGBT module 200 with higher power density, and the purpose of increasing the power of the IGBT module 200 is achieved.

In addition, set up direct current connecting piece 201 and interchange connecting piece 202 respectively at the both ends of IGBT module 200, and be located outside liquid cooling casing 100, so can avoid direct current connecting piece 201 and interchange connecting piece 202 mutual interference, do benefit to and promote EMC (electromagnetic compatibility).

Therefore, according to the utility model discloses motor controller 1 can carry out the double-sided cooling to IGBT module 200, has that the cooling effect is good, simple process is reliable, with low costs, disturb advantage such as little.

In some embodiments of the present invention, as shown in fig. 5, the inner peripheral wall surface of the insertion hole 150 is configured with a stopper ring edge 151 extending along the circumferential direction thereof. One end of the IGBT module 200 is provided with an axial sealing ring 211, and the axial sealing ring 211 is in interference fit with the surface of the stopper ring edge 151 facing the cooling chamber 110. The other end of the IGBT module 200 is provided with a radial seal 221, and the radial seal 221 is in interference fit with the inner peripheral wall surface of the insertion hole 140.

The limit ring edge 151 can block the IGBT module 200 at the insertion hole 150, preventing the IGBT module 200 from being separated from the insertion hole 150, and the limit ring edge 151 plays a role in positioning the IGBT module 200. Further, the axial seal ring 211 is attached to the stopper ring edge 151 to prevent the coolant from flowing out in the axial direction of the insertion hole 140, thereby sealing the IGBT module 200 and the liquid-cooled housing 100 at the insertion hole 150. The radial seal ring 221 surrounds the other end of the IGBT module 200, prevents the coolant from flowing out from the insertion hole 140, seals the IGBT module 200 and the liquid cooling housing 100 at the insertion hole 140, and plays a role in waterproofing at both ends of the IGBT module 200.

Further, as shown in fig. 7, one end of the IGBT module 200 is configured with an annular groove 212 opening toward the retainer ring 151, and an axial seal ring 211 is fitted into the annular groove 212. The other end of the IGBT module 200 has an injection molded part, and the radial seal ring 221 is formed by injection molding of the injection molded part.

The annular groove 212 provides an installation space for the axial sealing ring 211, and the axial sealing ring 211 is partially accommodated in the annular groove 212, so that the stability of the position of the axial sealing ring 211 is ensured, and the axial sealing ring 211 is prevented from being deformed too much to be separated from the IGBT module 200. The axial sealing ring 211 partially protrudes from the opening of the annular groove 212, so that the axial sealing ring 211 is deformed to seal when the axial sealing ring 211 is fitted to the stopper ring edge 151. The radial sealing ring 221 is formed by injection molding of an injection molding piece, the processing and the molding are simple and convenient, the integrity of the radial sealing ring 221 and the injection molding piece is strong, and the radial sealing ring 221 and the inner peripheral wall of the insertion hole 140 keep a good sealing effect.

In some embodiments of the present invention, as shown in fig. 1 and 7, the IGBT module 200 has a baffle 220, the baffle 220 is located outside the cooling chamber 110 and stops at one side of the liquid cooling housing 100 where the insertion hole 140 is provided, and the baffle 220 is mounted to the liquid cooling housing 100 through a fastener 222.

For example, the ac connector 202 is connected to the outside of the baffle 220, the fastener 222 may be a bolt, the baffle 220 is fixed to the liquid-cooled housing 100 by the fastener 222, so that the IGBT module 200 is kept in a stable state in the cooling chamber 110, and the baffle 220 may play a certain sealing effect in the axial direction of the insertion hole 140 and provide protection for the IGBT module 200.

In some embodiments of the present invention, as shown in fig. 7, the surfaces of two opposite sides of the IGBT module 200 in the thickness direction are respectively provided with a heat dissipation plate 203, and the surface of each heat dissipation plate 203 facing the inner wall surface of the cooling chamber 110 is provided with a plurality of heat dissipation pins 204.

The opposite side surfaces in the thickness direction of the IGBT module 200 are parallel to each other, and heat generated by the IGBT module 200 is rapidly exchanged with the coolant through the heat dissipation plate 203 and the heat dissipation pins 204 thereon. The plurality of heat dissipation pins 204 are arranged in parallel with each other and are perpendicular to the heat dissipation plate 203, and the heat dissipation pins 204 can further increase the contact area of the cooling liquid, so that the heat dissipation efficiency of the IGBT module 200 is further improved. In addition, IGBT module 200 is fully surrounded by cooling chamber 110, and the heating panel 203 of IGBT module 200's both sides has shielded once, is carried out the secondary by liquid cooling casing 100 again and shields the isolation, and shielding effect obtains promoting greatly.

In some embodiments of the present invention, as shown in fig. 4, the surface of the liquid cooling housing 100 provided with the insertion hole 150 is provided with an inclined surface 152, the inclined surface 152 is disposed around the insertion hole 150, and the inclined surface 152 is gradually inclined toward the inside of the cooling chamber 110 toward the insertion hole 150.

For example, the liquid cooling housing 100 is formed by die casting metal, the distance between the liquid cooling housing 100 and the dc connector 201 is short, and in order to prevent the distance between the dc connector 201 and the liquid cooling housing 100 from being too short, the electrical distance between the dc connector 201 and the liquid cooling housing 100 can be increased by providing the inclined surface 152 surrounding the insertion hole 150, thereby avoiding the problems of short circuit and the like, and further meeting the electrical safety requirement.

In some embodiments of the present invention, as shown in fig. 3, the number of cooling chambers 110 is plural, and the liquid inlet 120, the plurality of cooling chambers 110 and the liquid outlet 130 are sequentially connected.

The number of the IGBT modules 200 is plural, and the plural IGBT modules 200 are inserted into the plural cooling chambers 110 in a one-to-one correspondence.

For example, the plurality of cooling chambers 110 are arranged in a straight line, the cooling liquid may sequentially flow into each cooling chamber 110 from the liquid inlet 120 and finally flow out from the liquid outlet 130, the IGBT module 200 corresponding to each cooling chamber 110 is respectively cooled by the cooling liquid, and the cooling liquid sequentially flows into the plurality of cooling chambers 110, so that the cooling liquid performs sufficient heat exchange on the IGBT modules 200 in the plurality of cooling chambers 110, the IGBT modules 200 are sufficiently cooled, and the cooling liquid is efficiently utilized.

Further, as shown in fig. 3, the liquid inlet 120 is disposed at one end of the liquid-cooled housing 100, the liquid outlet 130 is disposed at the other end of the liquid-cooled housing 100, the plurality of cooling chambers 110 are arranged along the length direction of the liquid-cooled housing 100, the plurality of insertion holes 140 are disposed at one side surface of the liquid-cooled housing 100 in the width direction, and the plurality of insertion holes 150 are disposed at the other side surface of the liquid-cooled housing 100 in the width direction.

The liquid inlet 120 and the liquid outlet 130 are respectively located at both ends of the housing, and the cooling liquid flows along the length direction of the liquid-cooled housing 100, so that the flow of the cooling liquid in the plurality of cooling chambers 110 is smoother. And the cooling liquid flows along the length direction of the liquid cooling housing 100, so that the cooling liquid can flow for a longer distance, and a sufficient cooling effect is achieved. The IGBT module 200 is inserted in the width direction of the liquid-cooled housing 100, and is matched with the flow direction of the coolant, so that the coolant can sufficiently flow through the surfaces on both sides opposite to each other in the thickness direction of the IGBT module 200.

In some embodiments of the present invention, as shown in fig. 3, the plurality of cooling chambers 110 includes a first cooling chamber 111, a second cooling chamber 112 and a third cooling chamber 113, the first cooling chamber 111, the second cooling chamber 112 and the third cooling chamber 113 are sequentially arranged from the liquid inlet 120 to the liquid outlet 130, the first cooling chamber 111 and the second cooling chamber 112 are communicated through the first via hole 114, and the second cooling chamber 112 and the third cooling chamber 113 are communicated through the second via hole 115.

For example, the cross-sections of the liquid inlet 120 and the liquid outlet 130 are configured to be circular, and the liquid inlet 120 and the liquid outlet 130 respectively protrude from two ends of the liquid-cooled housing 100, so as to facilitate the connection of the south viewing path. By arranging the first cooling chamber 111, the second cooling chamber 112, and the third cooling chamber 113 in this order, the IGBT module 200 in each cooling chamber 110 can be sufficiently cooled by the coolant, and the IGBT module 200 is neither insufficiently cooled nor wasted in cooling capacity of the coolant. The first via 114 connects the first cooling chamber 111 and the second cooling chamber 112, and the second via 115 connects the second cooling chamber 112 and the third cooling chamber 113. The cross-sectional areas of the first and second via

holes

114 and 115 are smaller than the cross-sectional area of the adjacent cooling chamber, so that the cooling liquid may remain in the first cooling chamber 111 for a longer time to flow into the second cooling chamber 112 through the first via holes 114 and in the second cooling chamber 112 to flow into the third cooling chamber 113 through the second via holes 115. Therefore, the cooling liquid can perform sufficient heat exchange with the IGBT module 200 in the first cooling chamber 111, the second cooling chamber 112, and the third cooling chamber 113, and a good cooling effect is achieved.

The central axis of the liquid inlet 120 and the central axis of the first through hole 114 are coincident with each other and higher than the central axis of the liquid-cooled housing 100, and the central axis of the liquid outlet 130 and the central axis of the second through hole 115 are coincident with each other and not higher than the central axis of the liquid-cooled housing 100. Like this, inlet 120 and first via hole 114 keep higher height, and the higher liquid level can be kept in first cooling chamber 111 after the coolant liquid flows into first cooling chamber 111 from inlet 120, avoids the coolant liquid to be close to the lower position of first cooling chamber 111 because of gravity reason and flows, guarantees that the higher position of IGBT module 200 can fully contact with the coolant liquid, from this, guarantees that the IGBT module 200 in first cooling chamber 111 and the second cooling chamber 112 obtains abundant cooling. And the central axis of the second through hole 115 is not higher than the central axis of the liquid-cooled housing 100, that is, the central axis of the second through hole 115 is not higher than the axial center of the first through hole 114, so that the cooling liquid in the second cooling chamber 112 can more easily flow into the third cooling chamber 113 through the second through hole 115, thereby promoting the flow of the cooling liquid to the third cooling chamber 113.

In some embodiments of the present invention, as shown in fig. 7, the dc connector 201 includes a first dc negative input copper bar 21, a dc positive input copper bar 22, and a second dc negative input copper bar 23. The ac connection 202 includes ac output copper bars 24. The other end of the IGBT module 200 is further provided with a signal lead 25. The arrangement mode is not only beneficial to the electric connection arrangement, but also improves the electromagnetic compatibility.

In some embodiments of the present invention, the motor controller 1 further includes a box, and the heat dissipation structure of the motor controller 1 is disposed in the box. As shown in fig. 5, the cooling chamber 110 is disposed horizontally in the axial direction. The lower surface of the liquid cooling housing 100 is provided with fixing posts 160 mounted to the case and the upper surface is provided with support posts 170 for mounting a circuit board.

The circuit board can be a driving board and a control board, and the control signal is transmitted to the whole vehicle control center through a signal connector on the circuit board. Be equipped with the support column 170 that is used for installing the circuit board through the upper surface, with the circuit board certain distance of interval, reduce the interference of IGBT module 200 to the circuit board, in addition, liquid cooling casing 100 can adopt metal casting to form, makes liquid cooling casing 100 have certain shielding effect to IGBT module 200 to the circuit board receives the interference of IGBT module 200 and further reduces.

In addition, the lower surface of the liquid cooling housing 100 is provided with fixing columns 160 mounted on the box body, and the upper surface is provided with supporting columns 170 for mounting a circuit board, so that holes in the bottom wall and the top wall of the liquid cooling housing 100 are prevented from being formed, and the good sealing performance of the cooling chamber 110 is maintained.

In some embodiments of the present invention, the cooling chamber 110 is arranged axially vertically, as shown in fig. 6. The liquid cooling housing 100 is integrally formed with the tank. Thus, the liquid cooling housing 100 and the tank can maintain high structural strength and have high structural integrity.

A vehicle according to an embodiment of the present invention is described below.

According to the utility model discloses vehicle includes according to the utility model discloses motor controller 1 of above-mentioned embodiment.

According to the utility model discloses vehicle, through adopting according to the utility model discloses the machine controller 1 of above-mentioned embodiment has that motor control is effectual, simple process is reliable, with low costs, disturb advantage such as little.

Other configurations and operations of the motor controller 1 and the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "particular embodiment," "particular example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A motor controller, comprising a heat dissipation structure, the heat dissipation structure comprising:

the liquid cooling device comprises a liquid cooling shell, a liquid cooling device and a control device, wherein a cooling cavity is defined in the liquid cooling shell, the liquid cooling shell is provided with a liquid inlet and a liquid outlet which are communicated with the cooling cavity, and two opposite side walls of the cooling cavity are respectively provided with an insertion hole and an insertion hole;

the IGBT module, the IGBT module passes through the patchhole inserts cooling chamber, the relative both sides surface of IGBT module thickness direction all with cooling chamber's inner wall forms the liquid clearance, the one end of IGBT module has direct current connecting piece and the other end has an interchange connecting piece, direct current connecting piece follows the patchhole with insert one in the hole and stretch out cooling chamber, it follows to exchange the connecting piece the patchhole with another in inserting the hole stretches out cooling chamber, the both ends of IGBT module all with the liquid cooling casing is sealed in order to seal the patchhole with insert the hole.

2. The motor controller according to claim 1, wherein an inner peripheral wall surface of the insertion hole is configured with a stopper ring edge extending along a circumferential direction thereof;

an axial sealing ring is arranged at one end of the IGBT module and is in interference fit with the surface of the limiting ring edge facing the cooling cavity;

and the other end of the IGBT module is provided with a radial sealing ring, and the radial sealing ring is in interference fit with the inner peripheral wall surface of the insertion hole.

3. The motor controller according to claim 2, wherein one end of the IGBT module is configured with a ring groove opening toward the edge of the limit ring, and the axial sealing ring is assembled in the ring groove;

the other end of the IGBT module is provided with an injection molding piece, and the radial sealing ring is formed by injection molding of the injection molding piece twice.

4. The motor controller of claim 1, wherein said IGBT module has a baffle located outside said cooling chamber and stopping at a side of said liquid-cooled housing where said insertion hole is located, said baffle being mounted to said liquid-cooled housing by a fastener.

5. The motor controller according to claim 1, wherein heat dissipation plates are provided on opposite side surfaces in a thickness direction of the IGBT module, respectively, and a surface of each heat dissipation plate facing an inner wall surface of the cooling chamber is provided with a plurality of heat dissipation pins.

6. The motor controller according to claim 1, wherein a surface of the liquid-cooled housing on which the insertion hole is formed is provided with an inclined surface, the inclined surface being provided around the insertion hole, the inclined surface gradually inclining toward an inside of the cooling chamber toward the insertion hole.

7. The motor controller according to any one of claims 1 to 6, wherein the number of the cooling chambers is plural, and the liquid inlet, the plural cooling chambers and the liquid outlet are sequentially communicated;

the IGBT modules are multiple, and the IGBT modules are inserted into the cooling chambers in a one-to-one correspondence mode.

8. The motor controller according to claim 7, wherein the liquid inlet is disposed at one end of the liquid-cooled housing, the liquid outlet is disposed at the other end of the liquid-cooled housing, the plurality of cooling chambers are arranged along a length direction of the liquid-cooled housing, the plurality of insertion holes are disposed on one side surface of the liquid-cooled housing in a width direction, and the plurality of insertion holes are disposed on the other side surface of the liquid-cooled housing in the width direction.

9. The motor controller according to claim 7, wherein the plurality of cooling chambers includes a first cooling chamber, a second cooling chamber, and a third cooling chamber, the first cooling chamber, the second cooling chamber, and the third cooling chamber are arranged in sequence from the liquid inlet to the liquid outlet, the first cooling chamber and the second cooling chamber are communicated through a first via, and the second cooling chamber and the third cooling chamber are communicated through a second via;

the central axis of the liquid inlet and the central axis of the first via hole coincide and are higher than the central axis of the liquid cooling shell, and the central axis of the liquid outlet and the central axis of the second via hole coincide and are not higher than the central axis of the liquid cooling shell.

10. The motor controller of any of claims 1-6 wherein the DC connection comprises a first DC negative input copper bar, a DC positive input copper bar, and a second DC negative input copper bar;

the alternating current connecting piece comprises an alternating current output copper bar;

and the other end of the IGBT module is also provided with a signal lead.

11. The motor controller of claim 10, wherein an axial direction of the cooling chamber is horizontally disposed; or

The axial direction of the cooling chamber is vertically arranged.

12. A vehicle characterized by comprising a motor controller according to any one of claims 1-11.