CN216600650U

CN216600650U - Motor control module, motor controller and electric vehicle

Info

Publication number: CN216600650U
Application number: CN202123433659.0U
Authority: CN
Inventors: 周云龙; 王帮伟; 王小超
Original assignee: Suzhou Inovance Technology Co Ltd; Suzhou Huichuan Control Technology Co Ltd
Current assignee: Suzhou Huichuan United Power System Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-05-24
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a motor control module, motor controller and electric motor car, wherein, motor control module includes drive plate, control panel and power module, power module includes power device and the metal substrate who is connected with the power device; the driving board, the power module and the control board are sequentially arranged along the height direction of the motor control module, and the projection of the control board in the longitudinal direction is located in the metal substrate. The utility model discloses a motor control module group's structural layout is reasonable, and whole size is little, reduces occupation space and practices thrift the cost.

Description

Motor control module, motor controller and electric vehicle

Technical Field

The utility model relates to a new energy automobile technical field, in particular to motor control module group, machine controller and electric motor car.

Background

In an electric vehicle, an ac motor controller is generally provided to convert a dc power output from a battery into a three-phase ac power and to drive a motor to rotate. The controller comprises a motor control module which can receive direct current and convert the direct current into alternating current to be output to the motor.

In current motor control module structure, some stack drive plate, power module, heat radiation structure from last to down, and the control panel is put in one side, and the horizontal occupation space of this scheme is great, and space utilization is lower. In order to save space, the control board and the drive board are arranged above the power module, and due to the fact that electromagnetic compatibility (EMC) between a high-voltage signal of the drive board and a low-voltage signal of the control board is poor, large interference can be generated, the metal tray needs to be placed to isolate the high-voltage signal and the low-voltage signal, occupied space in the vertical direction is large, and cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a motor control module group aims at rational design and occupies little and motor control module group with low costs in order to obtain the space.

In order to achieve the above object, the utility model provides a motor control module group includes drive plate, control panel and power module, power module includes power device and the metal substrate who is connected with power device;

the driving board, the power module and the control board are sequentially arranged along the height direction of the motor control module, and the projection of the control board in the longitudinal direction is located in the metal substrate.

In one embodiment, a heat sink is disposed between the control board and the metal substrate.

In one embodiment, the heat sink includes a heat sink housing and a heat sink channel disposed inside the heat sink housing, and the metal substrate covers and seals an opening of the heat sink channel.

In one embodiment, the bottom of the heat dissipation casing is connected with a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe are respectively communicated with the heat dissipation channel.

In one embodiment, the control plate is provided with an avoiding hole, and the liquid inlet pipe and the liquid outlet pipe penetrate through the avoiding hole.

In one embodiment, the edge of the heat dissipation member is provided with a through hole, the periphery of the metal substrate is provided with a fixing hole, and the heat dissipation member and the metal substrate are hermetically connected by a fastening member penetrating through the fixing hole and the through hole.

In one embodiment, the metal substrate has heat dissipation teeth on a side facing the heat dissipation member, and the heat dissipation teeth extend into the heat dissipation channel.

In one embodiment, the heat dissipation housing is made of plastic.

The utility model discloses provide a machine controller again, machine controller includes the box and locates motor control module group in the box, motor control module group is as above arbitrary motor control module group, motor control module group follows vertical direction with the box is fixed mutually.

The utility model also provides an electric vehicle, the electric vehicle includes the car body, locates this internal motor of car and machine controller, machine controller is as above machine controller, the motor with machine controller connects.

The utility model discloses technical scheme sets up drive plate and control panel respectively on two surfaces that power module is relative with the motor control module group for holistic structure arranges in vertical direction, has reduced occuping to the plane space. Simultaneously, with the metal substrate among the power module as the shield plate, the control panel is arranged in the metal substrate in the projection of longitudinal direction, and the metal substrate can keep apart the high voltage signal of drive plate and the low voltage signal of control panel, effectively reduces signal interference, so, utilizes original structure as the shield, need not additionally to set up the shielding tray again to effectively reduce the space in the vertical direction, make whole size less, also be favorable to reduce cost. In addition, the motor control module can be used as a modular structure so as to be adaptive to different electric control systems, and the application range is wide.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is an exploded view of an embodiment of a motor control module according to the present invention;

fig. 2 is an exploded view of the motor control module shown in fig. 1 with power devices removed.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Motor control module	21	Power device
10	Heat sink	211	Power unit
				11	Heat radiation casing	22	Metal substrate
111	Accommodating tank	221	Fixing hole
				112	Water inlet	30	Driving board
113	Water outlet	40	Control panel
				114	Mounting post	41	Avoiding hole
115	Positioning column	42	Connecting hole
				116	Through hole	43	Locating hole
20	Power module

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Also, the meaning of "and/or" and/or "appearing throughout is meant to encompass three scenarios, exemplified by" A and/or B "including scenario A, or scenario B, or scenarios where both A and B are satisfied.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a motor control module group 100 aims at reducing the space occupation volume of this structure to can reduce the part, thereby reduce the cost.

Referring to fig. 1 and fig. 2 in combination, in an embodiment of the present invention, a motor control module 100 includes a power module 20, a driving board 30, and a control board 40, where the power module 20 includes a power device 21 and a metal substrate 22 connected to the power device 21;

along the height direction of the motor control module 100, the driving board 30, the power module 20 and the control board 40 are sequentially arranged, and the projection of the control board 40 in the longitudinal direction is located in the metal substrate 22.

In this embodiment, the motor control module 100 is an important component of a motor controller, and the volume and the cost of the motor control module occupy more than half of the motor controller, so that the size of the motor controller is directly affected by the occupied space of the motor control module 100. The power module 20 is an important component of the motor control module 100, and includes a plurality of power chips and forms a stable mounting structure in a packaging structure. Here, the power module includes a metal substrate 22 and a power device 21 packaged with the metal substrate 22 as a base. Of course, in other embodiments, the power module 20 may also be a structure composed of a plurality of power transistors, and the power transistors also adopt conventional power devices or switching devices such as IGBTs.

The driving board 30 and the control board 40 are both printed circuit boards, the driving board 30 is provided with a driving chip and various driving devices on a substrate thereof, the control board 40 is provided with a control chip and various control components on a substrate thereof, of course, the driving board 30 and the control board 40 can also be provided with other components, and the components can be increased or decreased according to actual requirements. In the direction of height of motor control module 100, drive plate 30, power module 20 and control panel 40 arrange in proper order, form the stack in the longitudinal direction and establish to avoid occupying too much plane space, and the surface that power device 21 deviates from metal substrate 22 is located to the drive plate, makes things convenient for the electric connection of drive plate 30 and power device 21. Meanwhile, the projection of the control board 40 in the longitudinal direction is located in the metal substrate 22, that is, the area of the control board 40 is smaller than that of the metal substrate 22, and the control board 40 is opposite to the metal substrate 22, so that the shadow of the control board 40 falls into the metal substrate 22, and thus, the metal substrate 22 can isolate the signals of the control board 40 and the metal substrate 22, and interference between the signals is avoided.

Because the area of the control board 40 can be adjusted, the projection of the control board 40 on the metal substrate 22 is selected to be located in the metal substrate 22, that is, the area of the control board 40 is smaller than the area of the metal substrate 22, so that the processing and production can be more conveniently carried out. The area of the control board 40 is controllable, which means that functional devices with special requirements can be arranged on an independent interface board, and the interface board is connected with the control board 40 through a flat cable, so that the area of the control board 40 can be minimized, and the projections of the control board 40 on the metal substrate 22 are all located in the metal substrate 22 conveniently. Moreover, different requirements can be met by only changing the interface board, and then the control board 40 does not need to be changed, so that the platform of the motor control module 100 is realized to the greatest extent. Optionally, the width of the control board 40 is smaller than the width of the metal substrate 22, and the length of the control board 40 may be smaller than or equal to the length of the metal substrate 22, so that it can be further ensured that the area of the control board 40 is smaller than the area of the metal substrate 22, the metal substrate 22 achieves a better shielding effect, and the control board 40 can be conveniently mounted. Of course, in other embodiments, the width of the control board 40 may be equal to the width of the metal substrate 22, and the length of the control board 40 may be smaller than the length of the metal substrate 22.

The utility model discloses set up drive plate 30 and control panel 40 respectively on two relative surfaces of power module 20 in technical scheme's motor control module 100 for holistic structure arranges in vertical direction, has reduced the occupation to planar space. Simultaneously, metal substrate 22 through among the power module is as the shield plate, all is located metal substrate 22 with control panel 40 projection on vertical, and metal substrate 22 can keep apart the high voltage signal of drive plate 30 and the low voltage signal of control panel 40, effectively reduces signal interference, so, utilize original structure as the shielding piece, need not additionally to set up the shielding tray again to effectively reduce the space in the vertical direction, make whole size less, also be favorable to reduce cost. The motor control module 100 can be used as a modular structure, so as to adapt to different electric control systems, and the application range is wide.

Optionally, in order to improve the connection stability of the driving board 30 and the power device 21, the driving board 30 and the power device 21 are configured to be connected by welding. Optionally, a welding hole is formed in the driving board 30, and a solder foot is convexly formed on the surface of the power device 21, so that after the two are welded and connected, electrical connection can be achieved at the same time, or an additional terminal and a pin are arranged for electrical connection, which is not limited herein. This connected mode can promote structural stability on the one hand, and can reduce connection height to reduce the occupation to the space in the vertical direction, and can realize better electric connection relation, in order to guarantee electric contact stability.

Referring to fig. 1, in an embodiment, the power device 21 includes a plurality of power units 211, and the plurality of power units 211 are arranged in parallel in the length direction of the metal substrate 22, so that on one hand, the heat dissipation performance of the power device 21 can be improved, and on the other hand, the height of the power device 21 can be reduced without occupying additional planar space, and thus the height of the entire motor control module 100 is reduced, the space is saved, and the assembly is facilitated.

Referring to fig. 2, in an embodiment, a heat sink 10 is disposed between the control board 40 and the metal substrate 22.

In this embodiment, the metal substrate 22 and the control board 40 are respectively connected to two opposite surfaces of the heat sink 10, and here, the heat sink 10 provides a mounting base for the power module 20 and the control board 40 on one hand, and also can provide cooling energy on the other hand, so as to take away heat generated by the power module 20 and the control board 40 in time, thereby improving the working performance of the motor control module 100. The heat sink 10 is not limited in form, and may be, for example, a water-cooling structure, an air-cooling structure, a metal heat dissipation mechanism, or the like.

Alternatively, in order to achieve stable mounting of the control board 40, the control board 40 may be screwed or welded to the heat sink 10. For example, a connecting hole 42 is formed in the control board 40, a mounting column 114 is arranged on the surface of the radiating element 10 facing the control board 40, a mounting hole is formed in the mounting column 114, the connecting hole 42 is sequentially penetrated into the mounting hole through a locking piece to achieve connecting and mounting of the control board 40 and the radiating element 10, a stable mounting structure is guaranteed, and meanwhile, disassembly, assembly, replacement or maintenance are facilitated. Optionally, in order to improve the assembly efficiency, a positioning column 115 is further disposed on the heat sink 10, a positioning hole 43 is disposed on the control board 40, and the positioning column 115 is inserted into the positioning hole 43 to complete preliminary positioning, so that the subsequent fasteners can be conveniently inserted and locked, and convenience is improved. Of course, the number of the connection holes 42 is plural, and the connection holes may be distributed at intervals on the periphery of the control board 40, and correspondingly, the number of the installation holes is also plural, thereby improving the structural stability. Of course, in other embodiments, the control board 40 may be mounted on the heat sink 10 by plugging or clipping.

Referring to fig. 2, in an embodiment, the heat sink 10 includes a heat dissipation housing 11 and a heat dissipation channel 111 disposed inside the heat dissipation housing 11, and the metal substrate 22 covers and seals an opening of the heat dissipation channel 111.

In this embodiment, the heat sink 10 is of a water-cooling structure, that is, the heat sink includes a heat sink housing 11 and a heat sink channel 111 disposed therein, that is, the heat sink housing 11 is formed with the heat sink channel 111, and the heat sink channel contains a cooling liquid, and the cooling liquid absorbs heat generated by the control boards 40 and the power modules on two sides, so as to achieve good heat dissipation. Moreover, the metal substrate 22 covers and seals the opening of the heat dissipation shell 11, and the driving board 30 is arranged on the surface of the power device 21 departing from the metal substrate 22, so that the distance between the metal substrate 22 and the cooling liquid can be closer, and a better heat dissipation effect can be realized. The coolant may be water, organic substance (methanol), inorganic substance (calcium chloride), etc., and is not limited thereto.

The metal substrate 22 may be directly attached to the surface of the heat dissipation housing 11, or a heat conducting member, such as a heat conducting plate or a heat conducting coating, may be interposed between the metal substrate and the heat dissipation housing, so as to further improve the heat conducting efficiency and ensure the heat dissipation performance of the power module 20. In one embodiment, the edge of the heat sink 20 is provided with a through hole 116, the periphery of the metal substrate 22 is provided with a fixing hole 221, and the heat sink 20 and the metal substrate 22 are hermetically connected by a fastening element passing through the fixing hole 221 and the through hole 116.

In this embodiment, the connection mode of metal base plate 22 and heat dissipation casing 11 is threaded connection, has seted up fixed orifices 221 on metal base plate 22, is provided with the flanging along opening week of heat dissipation casing 11, has seted up through-hole 116 on the flanging, and the flanging can support metal base plate 22, and the fastener wears to establish fixed orifices 221 and through-hole 116 in proper order to realize sealing connection between them, so, realize comparatively stable connection structure. A sealing ring can be added between the two, for example, a sealing groove is arranged at the edge of the opening of the heat dissipation channel 111, and the sealing ring is arranged in the sealing groove, so that the sealing performance in the heat dissipation channel 111 is ensured, and the coolant is prevented from overflowing.

Of course, in other embodiments, the metal substrate 22 and the heat dissipation housing 11 may be connected by plugging, clipping, or welding.

In one embodiment, the metal substrate 22 has heat dissipation teeth (not shown) on a side facing the heat dissipation member 10, and the heat dissipation teeth extend into the heat dissipation channel 111.

In this embodiment, in order to further enhance the heat dissipation effect, a side of the metal substrate 22 facing the heat dissipation member 10 has heat dissipation teeth, and the shape of the longitudinal section of the heat dissipation teeth may be rectangular, triangular, or parabolic, which is not limited herein. It is understood that a plurality of heat dissipation teeth are provided and may be arranged along the extending direction of the metal base plate 22, thereby further increasing the heat dissipation area. The heat dissipation teeth extend into the heat dissipation channel 111, so that more contact areas can be formed between the heat dissipation teeth and the cooling liquid, and the heat dissipation effect is further improved.

In one embodiment, the heat dissipating housing 11 is made of plastic.

In this embodiment, the material that can select heat dissipation casing 11 is the plastic to can be through mould shaping integrated into one piece processing, processing is convenient, effectively improves production efficiency, and has good structural stability. Certainly, plastic material's heat dissipation casing 11 still has better insulating properties to promote motor control module 100's ann rule requirement, so, can further reduce the distance in vertical direction, and then further reduce the size in vertical direction, be favorable to the miniaturization further.

On the basis of the heat dissipation shell 11 of the plastic part, the cooling liquid can be set to be water, so that the environment is protected, the cost is reduced, the heat dissipation shell 11 is not corroded, and the cooling effect is improved.

Referring to fig. 2, in an embodiment, a liquid inlet pipe (not shown) and a liquid outlet pipe (not shown) are connected to a bottom of the heat dissipation housing 11, and the liquid inlet pipe and the liquid outlet pipe are respectively communicated with the heat dissipation channel 111.

In order to further promote the heat dissipation effect, the coolant in the heat dissipation shell 11 is set to be flowing, a water inlet 112 and a water outlet 113 are formed in the bottom of the heat dissipation shell 11 and are distributed at two ends of the heat dissipation shell 11, the water inlet 112 is communicated with a liquid inlet pipe, new coolant can be supplemented in time, the cooling efficiency is improved, the water outlet 113 is communicated with a liquid outlet pipe, so that the coolant is circulated and flows, and the heat dissipation effect is promoted.

In one embodiment, the control plate 40 is provided with an avoiding hole 41, and the liquid inlet pipe and the liquid outlet pipe are arranged through the avoiding hole 44.

Certainly, in order to further reduce vertical ascending height, laminate control panel 40 in the surface of heat dissipation casing 11, so, need dodge feed liquor pipe and drain pipe, control panel 40 has seted up dodges hole 41, dodges the shape phase-match of the opening shape of hole 41 and feed liquor pipe and drain pipe, for example, waist shape hole, increase heat dissipation channel 111's diapire area, promote with power module 20 area of contact. And the opening size of the avoiding hole 41 can be larger than or equal to the sizes of the liquid inlet pipe and the liquid outlet pipe, so that the disassembly and the assembly are convenient.

The utility model discloses a machine controller (not shown in the drawing) is proposed again, machine controller includes box (not shown in the drawing) and locates motor control module group 100 in the box, motor control module group 100 is as above arbitrary motor control module group 100, motor control module group 100 is followed vertical direction with the box is fixed mutually. Since the motor control module 100 of the motor controller adopts all technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are achieved, and no further description is given here.

The box body can be of a split structure and comprises a box body and a box cover which is detachably connected, so that the assembly of an internal structure is facilitated. Of course, the motor controller includes a wire holder in addition to the motor control module 100, and the wire holder can be connected to the motor control module 100 by a wire to provide an ac or dc power source. Of course, in an embodiment, the box body is provided with a water inlet butt joint structure and a water outlet butt joint structure corresponding to the liquid inlet pipe and the liquid outlet pipe of the heat dissipation housing 11, respectively.

The utility model discloses still provide an electric motor car (not shown), the electric motor car includes the car body, locates this internal motor of car and machine controller, machine controller be as above machine controller, the motor with machine controller connects. Since the motor controller of the electric vehicle adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.

The motor controller is electrically connected with the motor, so that the operation of the motor is controlled, and the power driving of the electric vehicle is realized. Of course, a gearbox may also be provided, connected to the motor.

The above is only the optional embodiment of the present invention, and not therefore the limit to the patent scope of the present invention, all the concepts of the present invention utilize the equivalent structure transformation of the content of the specification and the attached drawings, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. The motor control module is characterized by comprising a driving board, a control board and a power module, wherein the power module comprises a power device and a metal substrate connected with the power device;

2. The motor control module of claim 1, wherein a heat sink is provided between the control board and the metal base plate.

3. The motor control module of claim 2, wherein the heat sink includes a heat sink housing and a heat sink channel disposed inside the heat sink housing, and the metal substrate covers and seals an opening of the heat sink channel.

4. The motor control module of claim 3, wherein a liquid inlet pipe and a liquid outlet pipe are connected to a bottom of the heat dissipation housing, and the liquid inlet pipe and the liquid outlet pipe are respectively communicated with the heat dissipation channel.

5. The motor control module of claim 4, wherein the control board is provided with an avoidance hole, and the liquid inlet pipe and the liquid outlet pipe are arranged through the avoidance hole.

6. The motor control module of claim 3, wherein the edge of the heat sink is provided with a through hole, the periphery of the metal substrate is provided with a fixing hole, and the heat sink and the metal substrate are hermetically connected by a fastening member passing through the fixing hole and the through hole.

7. The motor control module of claim 3, wherein the metal base plate has heat dissipation teeth on a side facing the heat dissipation member, the heat dissipation teeth extending into the heat dissipation channel.

8. The motor control module of claim 3, wherein the heat dissipation housing is made of plastic.

9. A motor controller, characterized in that, motor controller includes the box and locates the motor control module group in the box, motor control module group is as in any one of claims 1-8 motor control module group, motor control module group along the longitudinal direction with the box is fixed mutually.

10. An electric vehicle, characterized in that, the electric vehicle includes a vehicle body, a motor and a motor controller arranged in the vehicle body, the motor controller is the motor controller according to claim 9, and the motor is connected with the motor controller.