CN111031713A

CN111031713A - Motor controller and electric control assembly

Info

Publication number: CN111031713A
Application number: CN201911415168.8A
Authority: CN
Inventors: 李萌
Original assignee: Unison New Energy Xuzhou Co ltd
Current assignee: Unison New Energy Xuzhou Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-04-17

Abstract

The invention belongs to the technical field of motor controllers, and discloses a motor controller and an electric control assembly. The motor controller comprises a metal bottom plate and a plastic shell on the metal bottom plate, wherein the plastic shell is connected with the metal bottom plate through screws, a cavity is formed inside the plastic shell, and a power plate, a capacitor plate, a driving plate and a control plate are placed in the cavity from bottom to top; the power board is provided with a plurality of power tubes, a U-phase wiring terminal, a V-phase wiring terminal and a W-phase wiring terminal; the capacitor plate is provided with a plurality of capacitors, a B + binding post and a B-binding post; the driving board is positioned right above the power board, is supported by a binding post and is connected with the power board by adopting a flexible flat cable; the control board is positioned right above the driving board and is connected with the driving board by adopting double-row pin connection; the motor controller has the advantages of strong signal anti-interference capability, simple installation process, high reliability and excellent waterproof performance.

Description

Motor controller and electric control assembly

Technical Field

The invention belongs to the technical field of motor controllers, and particularly relates to a motor controller and an electric control assembly.

Background

The new energy electric automobile has the advantages that zero emission of tail gas is realized, automobile tail gas pollution is effectively reduced, and the running cost is low, so that the electric automobile is increasingly applied to places with higher environmental requirements such as walking and tourist attractions, and the core electric component of the electric automobile consists of a motor controller, a motor and a battery; the motor is an alternating current motor which is matched with an alternating current controller, and the direct current output by the battery is inverted into an alternating current driving motor by the controller.

In summary, the problems of the prior art are as follows: the existing mode of strong current input and output lines of the motor controller can influence the weak current signal transmission of the controller, communication signals are interfered, and the installation process is complex; the existing controller is installed in a vehicle in a bad position and environment, and is not good in rain and snow weather, water is easy to enter, so that the controller cannot work normally or the service time of the controller is shortened.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a motor controller and an electric control assembly, wherein the motor controller provided by the invention has the advantages of strong signal anti-interference capability, simple installation process, high reliability and excellent waterproof performance.

The motor controller comprises a metal base plate and a plastic shell on the metal base plate, wherein the plastic shell is connected with the metal base plate through screws, a cavity is formed inside the plastic shell, and a power plate, a capacitor plate, a driving plate and a control plate are arranged in the cavity from bottom to top; the power board is provided with a plurality of power tubes, a U-phase wiring terminal, a V-phase wiring terminal and a W-phase wiring terminal, wherein the U-phase wiring terminal, the V-phase wiring terminal and the W-phase wiring terminal are arranged in a straight line; the capacitor plate is provided with a plurality of capacitors, a B + wiring terminal and a B-wiring terminal, wherein the B + wiring terminal and the B-wiring terminal are arranged according to two parallel straight lines, the capacitors are positioned on the same side of the B + wiring terminal and the B-wiring terminal, and the capacitor plate is positioned on one side of the long edge of the power plate and is tightly attached to the power plate; the driving board is positioned right above the power board, is supported by a binding post and is connected with the power board by adopting a flexible flat cable; the control board is positioned right above the driving board and is connected with the driving board by adopting double-row pin connection; the upper end face of the metal bottom plate is provided with a radiator, and the radiator is located below the power plate.

As a preferred technical scheme of the motor controller of the present invention, the power board is fixedly located in the middle of the circuit board through the U-phase wiring terminal, the V-phase wiring terminal, and the W-phase wiring terminal, the plurality of power tubes are disposed in the center of the power board, and the power board is made of an aluminum substrate.

Adopt above-mentioned scheme: the power plate is manufactured by adopting an aluminum substrate process, and heat dissipation is facilitated.

According to the preferred technical scheme of the motor controller, the metal base plate is provided with the heat dissipation boss, the control plate is supported and fixed on the heat dissipation boss, and the heat conduction silicon pad is arranged between the control plate and the heat dissipation boss.

Adopt above-mentioned scheme: the control panel and the heat dissipation boss are insulated and dissipated by the heat conduction silicon pad, so that the installation is simple and reliable.

According to the preferred technical scheme of the motor controller, a plurality of first fixing holes are reserved right above the heat dissipation boss on the metal base plate, and the inner side of the heat dissipation boss is provided with a gap.

Adopt above-mentioned scheme: be used for fixed mounting fixed plate through first fixed orifices, the boss inboard that dispels the heat simultaneously sets up vacancy portion, has reserved the space of installation placing for the power board.

According to the preferable technical scheme of the motor controller, the inner surface of the metal bottom plate is provided with a plurality of second fixing holes for fixing the power board, the U wiring terminal, the V wiring terminal and the W wiring terminal.

Adopt above-mentioned scheme: through the setting of second fixed orifices, the U terminal of being convenient for, the V terminal, the installation of W terminal is fixed.

As a preferred technical scheme of the motor controller, five through holes, a B + binding post, a B-binding post, a U-phase binding post, a V-phase binding post and a W-phase binding post are arranged at the top of the plastic shell and respectively penetrate through the corresponding five through holes, and sealing O-shaped rings are arranged between the through holes and the binding posts.

Adopt above-mentioned scheme: at B + terminal, B-terminal, U looks terminal, V looks terminal, W looks terminal correspondence department, plastic casing all is equipped with the through-hole that corresponds, be convenient for with the corresponding installation of plastic casing and metal soleplate, all sets up sealed O type circle between each terminal and the plastic casing simultaneously, prevents in the machine controller course of operation, rubs between each terminal and the plastic casing, reduces the life of each terminal.

As the optimal technical scheme of the motor controller, the B + wiring column, the B-wiring column, the U-phase wiring column, the V-phase wiring column and the W-phase wiring column are respectively provided with a small column base in the middle, and a threaded hole is formed in the small column base and used for fixing the driving plate.

Adopt above-mentioned scheme: through setting up little stylobate, and set up the screw hole in little stylobate inside, the dismantlement and the installation of the drive plate of being convenient for make things convenient for subsequent maintenance.

As the preferred technical scheme of the motor controller, a groove is formed at the joint of the metal bottom plate and the bottom of the side wall of the plastic shell, and a waterproof sealing ring is arranged in the groove.

Adopt above-mentioned scheme: through seting up the recess, the waterproof sealing washer's of being convenient for installation ensures the waterproof nature of metal bottom and plastic casing inside.

As the preferable technical scheme of the motor controller, the waterproof sealing ring and the waterproof sealing O-shaped ring are made of flexible materials.

Adopt above-mentioned scheme: waterproof sealing circle and waterproof sealing O type circle are flexible material, the installation of waterproof sealing circle and waterproof sealing O type circle of being convenient for, increase the laminating nature between waterproof sealing circle and plastic casing, the metal soleplate simultaneously, increase the laminating nature between waterproof sealing O type circle and plastic casing, each terminal.

The invention has the advantages and positive effects that: the controller circuit consists of four circuit boards, namely a control board, a driving board, a capacitor board and a power board, wherein the four circuit boards are the power board, the capacitor board, the driving board and the control board from bottom to top vertically and upwards at one time; the wiring terminals of the power board are linearly distributed, the power tubes are uniformly distributed on the power board, and the power board is fixed on the metal bottom board through the fixed wiring terminals; one side of the capacitor plate is tightly attached to the power plate, the wiring terminals B & lt + & gt and B & lt- & gt are arranged on the capacitor plate, and the capacitor plate and the power plate are simultaneously fixed by fixing the B & lt + & gt and B & lt- & gt wiring terminals; the capacitor plate is upward, namely the drive plate, the drive plate is connected with the power plate by the overhead binding post at the half waist, and the interference of large current on the power plate and the influence of high temperature are eliminated; the driving board is the control board again, and control board one side is fixed on the heat dissipation boss of metal baseplate, has the heat dissipation effect to power device on the control board, and control board other side is fixed on the B +, B-terminal, opens fixed and electrically conductive effect. In addition, a groove is formed in the joint of the metal bottom plate and the plastic shell, a waterproof sealing ring and a waterproof sealing O-shaped rubber ring adopted in the joint of the binding post and the shell are placed in the groove, the sealing performance of the controller is improved, liquid such as water is prevented from entering an inner cavity of the controller, a circuit is prevented from being damaged, and the waterproof performance of the controller is improved.

Drawings

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

FIG. 2 is a top view of a motor controller provided by an embodiment of the present invention;

FIG. 3 is a front view of a motor controller provided by an embodiment of the present invention;

in the figure: 1. a metal base plate; 2. a plastic housing; 3. a heat sink; 4. a power board; 31. a power tube; 32. a U-phase binding post; 33. a V-phase binding post; 34. a W-phase binding post; 5. a capacitive plate; 41. a capacitor; 42. b + binding post; 43. b-a binding post; 6. a control panel; 7. a heat dissipation boss; 8. a thermally conductive silicon pad; 9. a first fixing hole; 10. a second fixing hole; 11. a through hole; 12. sealing the O-shaped ring; 13. a small column base; 14. a threaded hole; 15. a groove; 16. a waterproof sealing ring; 17. a drive plate.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "glued", "provided", "connected", "covered", "fixed", "plugged" and "sheathed" are to be understood in a broad sense. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 3, an embodiment of the present invention provides a motor controller, which includes a metal base plate 1 and a plastic housing 2 on the metal base plate 1, wherein the plastic housing 2 is connected to the metal base plate 1 through screws, a cavity is formed inside the plastic housing 2, and a power board 4, a capacitor board 5, a driving board 17, and a control board 6 are placed in the cavity from bottom to top; the power board 4 is provided with a plurality of power tubes 31, a U-phase wiring column 32, a V-phase wiring column 33 and a W-phase wiring column 34, wherein the U-phase wiring column 32, the V-phase wiring column 33 and the W-phase wiring column 34 are arranged in a straight line; the capacitor plate 5 is provided with a plurality of capacitors 41, a B + binding post 42 and a B-binding post 43, wherein the B + binding post 42 and the B-binding post 43 are arranged according to two parallel straight lines, the capacitors 41 are positioned on the same side of the B + binding post 42 and the B-binding post 43, and the capacitor plate 5 is positioned on one side of the long edge of the power plate 4 and is tightly attached to the power plate 4; the driving board 17 is positioned right above the power board 4, is supported by a binding post and is connected with the power board 4 by adopting a flexible flat cable 7; the control board 6 is positioned right above the drive board 17 and is connected with the drive board 17 by adopting double-row needles 8; the upper end face of the metal base plate 1 is provided with a radiator 3, the radiator 3 is located below the power plate 4, and the radiator 3 transfers heat to the metal base plate 1 in an express way.

Specifically, the metal base plate 1 and the heat sink 3 are integrally formed.

Specifically, the power board 4 is fixedly located in the middle of the circuit board through the U-phase wiring column 32, the V-phase wiring column 33 and the W-phase wiring column 34, the plurality of power tubes 31 are arranged in the center of the power board 4, the power board 4 is made of an aluminum substrate, and the power board 4 made of the aluminum substrate is beneficial to heat dissipation.

Specifically, be provided with heat dissipation boss 7 on metal soleplate 1, control panel 6 supports to be fixed on heat dissipation boss 7, be equipped with heat conduction silicon pad 8 in the middle of control panel 6 and the heat dissipation boss 7, use safe and reliable more with heat conduction silicon pad 8 insulation and heat dissipation between control panel 6 and the heat dissipation boss 7.

Specifically, a plurality of first fixing holes 9 are reserved right above the heat dissipation boss 7 on the metal base plate 1, and the inner side of the heat dissipation boss 7 is provided with a vacancy.

Specifically, a plurality of second fixing holes 10 are formed in the inner surface of the metal base plate 1 and used for fixing the power board 4, the U binding post 32, the V binding post 33 and the W binding post 34, so that the power board 4 is located in the middle of the circuit board.

Specifically, the top of the plastic shell 2 is provided with five through holes 11, a B + binding post 42, a B-binding post 43, a U-phase binding post 32, a V-phase binding post 33 and a W-phase binding post 34 which respectively penetrate through the corresponding five through holes 11, and sealing O-rings 12 are arranged between the through holes 11 and the binding posts.

Specifically, the B + terminal 42, the B-terminal 43, the U-phase terminal 32, the V-phase terminal 33, and the W-phase terminal 34 are respectively provided with a small pillar base 13 at the middle portion, and a threaded hole 14 is formed inside the small pillar base 13 and used for fixing the drive board 17, the B + terminal 42, the B-terminal 43, the U-phase terminal 32, the V-phase terminal 33, and the W-phase terminal 34, which extend out of the drive board 17, are screwed into the threaded hole for fastening.

Specifically, a groove 15 is formed at the joint of the metal base plate 1 and the bottom of the side wall of the plastic shell 2, a waterproof sealing ring 16 is arranged in the groove 15, and the waterproof sealing ring 16 is positioned between the metal base plate 1 and the plastic shell 2.

Specifically, the waterproof sealing ring 16 and the waterproof sealing O-ring 12 are made of flexible materials.

The working principle of the invention is as follows: the motor controller consists of four circuit boards, namely a control board 6, a drive board 17, a capacitor board 5 and a power board 4, wherein the four circuit boards are sequentially provided with the power board 4, the capacitor board 5, the drive board 17 and the control board 6 from bottom to top in a vertical and upward manner; the wiring terminals of the power board 4 are linearly distributed, the power tubes 31 are uniformly distributed on the power board 4, the power board 4 is fixed on the metal bottom plate 1 through the fixed wiring terminals, and the power board 4 is further installed in a reinforcing mode through the first fixing holes 9; one side of the capacitor plate 5 is tightly attached to the power plate 4, the B + wiring terminal 42 and the B-wiring terminal 43 are arranged on the capacitor plate 5, and the capacitor plate 5 and the power plate 4 are simultaneously fixed by fixing the B + wiring terminal 42 and the B-wiring terminal 43; the capacitor plate 5 is upward, namely the driving plate 17, the driving plate 17 is connected with the power plate 4 by the overhead binding post at the half waist by adopting a flexible flat cable, and the interference of large current and the influence of high temperature on the power plate 4 are eliminated; the driving plate 17 is provided with a control plate 6 upwards, one side of the control plate 6 is fixed on the heat dissipation boss 7 of the metal bottom plate 1 and has a heat dissipation effect on a power device on the control plate 6, and the other side of the control plate 6 is fixed on the B + wiring terminal 42 and the B-wiring terminal 43 and plays a role in fixing and conducting electricity; in addition, a groove 15 is formed in the joint of the metal bottom plate 1 and the plastic shell 2, a waterproof sealing ring 16 and a waterproof sealing O-shaped rubber ring 12 adopted in the joint of the binding post and the shell are placed in the groove 15, the sealing performance of the controller is improved, liquid such as water is prevented from entering an inner cavity of the controller, a circuit is prevented from being damaged, and the waterproof performance of the controller is improved.

Based on the same technical concept, the embodiment of the application also provides an electric control assembly, and the electric control assembly comprises the motor controller.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A motor controller is characterized by comprising a metal base plate (1) and a plastic shell (2) on the metal base plate (1), wherein the plastic shell (2) is connected with the metal base plate (1) through screws, a cavity is formed inside the plastic shell, and a power board (4), a capacitor board (5), a driving board (17) and a control board (6) are placed in the cavity from bottom to top; the power board (4) is provided with a plurality of power tubes (31), a U-phase wiring terminal (32), a V-phase wiring terminal (33) and a W-phase wiring terminal (34), wherein the U-phase wiring terminal (32), the V-phase wiring terminal (33) and the W-phase wiring terminal (34) are arranged in a straight line; the capacitor plate (5) is provided with a plurality of capacitors (41), a B + binding post (42) and a B-binding post (43), wherein the B + binding post (42) and the B-binding post (43) are arranged according to two parallel straight lines, and the capacitors (41) are positioned on the same side of the B + binding post (42) and the B-binding post (43); the capacitor plate (5) is positioned on one side of the long edge of the power plate (4) and is tightly attached to the power plate (4); the driving board (17) is positioned right above the power board (4), is supported by a binding post and is connected with the power board (4) by adopting a flexible flat cable; the control board (6) is positioned right above the driving board (17) and is connected with the driving board (17) by adopting double-row pin connection; the upper end face of the metal bottom plate (1) is provided with a radiator (3), and the radiator (3) is located below the power plate (4).

2. The motor controller according to claim 1, wherein the power board (4) is fixedly positioned in the middle of the circuit board through the U-phase terminal (32), the V-phase terminal (33) and the W-phase terminal (34), the plurality of power tubes (31) are arranged in the center of the power board (4), and the power board (4) is made of an aluminum substrate.

3. The motor controller according to claim 1, characterized in that the metal base plate (1) is provided with a heat dissipation boss (7), the control plate (6) is supported and fixed on the heat dissipation boss (7), and a heat conduction silicon pad (8) is arranged between the control plate (6) and the heat dissipation boss (7).

4. The motor controller according to claim 3, characterized in that a plurality of first fixing holes (9) are reserved right above the heat dissipation boss (7) on the metal base plate (1), and a gap for accommodating the power board (4) is arranged on the inner side of the heat dissipation boss (7).

5. The motor controller according to claim 4, characterized in that the inner surface of the metal bottom plate (1) is provided with a plurality of second fixing holes (10) for fixing the power board (4), the U binding post (32), the V binding post (33) and the W binding post (34).

6. The motor controller according to claim 1, characterized in that the top of the plastic shell (2) is provided with five through holes (11), a B + terminal (42), a B-terminal (43), a U-phase terminal (32), a V-phase terminal (33), and a W-phase terminal (34) respectively pass through the corresponding five through holes (11), and sealing O-rings (12) are arranged between the through holes (11) and the terminals.

7. The motor controller according to claim 1, wherein the B + terminal (42), the B-terminal (43), the U-phase terminal (32), the V-phase terminal (33), and the W-phase terminal (34) are respectively provided with a small post (13) at the middle portion, and a screw hole (14) is formed inside the small post (13) for fixing the driving plate (17).

8. The motor controller according to claim 6, characterized in that a groove (15) is formed at the joint of the metal bottom plate (1) and the bottom of the side wall of the plastic shell (2), and a waterproof sealing ring (16) is arranged in the groove (15).

9. The motor controller according to claim 8, characterized in that the waterproof sealing ring (16) and the waterproof sealing O-ring (12) are of a flexible material.

10. An electrical control assembly comprising a motor controller according to any one of claims 1 to 9.