Motor controller and new energy automobile

Abstract

The utility model discloses a motor controller and a new energy automobile. The motor controller comprises a shell, a circuit board, a first copper bar, a current sensor, an insulating seat, a power module, a low-voltage connector, a mother capacitor, a magnetic ring seat, a second copper bar, a three-phase high-voltage connector and a direct-current high-voltage connector. The interior of the shell is divided into a first space and a second space according to a first direction, and the first space and the second space are arranged side by side; the circuit board, the first copper bar, the low-voltage connector, the power module, the insulating base and the current sensor are located on the same layer and arranged in the first space in a layered mode in the second direction, the circuit board and the first copper bar are located on the same layer, and the current sensor, the insulating base, the power module and the low-voltage connector are located on the same layer; and the mother capacitor, the magnetic ring seat and the second copper bar are arranged in the second space. The number and the occupied space of internal components of the motor controller are effectively reduced, so that the internal components are arranged more compactly, and the whole motor controller achieves higher power density.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, and in particular to a motor controller and a new energy vehicle. Background Art

[0002] With the vigorous development and rapid popularization of the new energy vehicle industry, the motor controller, as the core control unit of the electric control system of new energy vehicles, plays an increasingly important role, including energy conversion, torque control, active discharge and safety protection functions. At the same time, the lightweight of new energy vehicles and the integrated development of the electric control system also put forward requirements for motor controllers such as small size, light weight, high integration, high power density and stable control.

[0003] At present, most motor controllers developed by manufacturers are still in the stage of simple physical stacking integration. The modules of the motor controller are not compact enough, the structure is complex, and the controller volume is relatively large, usually 6~9dm 3 , and has not achieved the goals of lightweight, miniaturization and integration. In addition, most manufacturers' motor controllers use electrolytic DC support capacitors, industrial-grade IGBTs and scattered and complex circuit designs, which result in large volume and weight, low power density and other problems. When applied to new energy vehicles with high power density requirements, it will have an adverse effect on motor control and vehicle performance.

[0004] Therefore, there is an urgent need for a lightweight, integrated and high-power density motor controller to solve the above problems, so as to improve the stability of the new energy vehicle electronic control system and ensure that the performance of the new energy vehicle is fully utilized. Utility Model Content

[0005] The utility model provides a motor controller and a new energy vehicle to improve the viewing experience of drivers.

[0006] In order to achieve the above object, the utility model discloses the following technical solutions:

[0007] In a first aspect, the utility model provides a motor controller, including a housing, a circuit board, a first copper busbar, a current sensor, an insulating seat, a power module, a low-voltage connector, a mother capacitor, a magnetic ring seat, a second copper busbar, a three-phase high-voltage connector and a DC high-voltage connector, wherein:

[0008] The interior of the housing is divided into a first space and a second space according to a first direction, and the first space and the second space are arranged side by side; the circuit board, the first copper busbar, the low-voltage connector, the power module, the insulating seat and the current sensor are located on the same layer and arranged in layers in the first space according to the second direction, and the circuit board and the first copper busbar are located on the same layer, and the current sensor, the insulating seat, the power module and the low-voltage connector are located on the same layer; the mother capacitor, the magnetic ring seat and the second copper busbar are arranged in the second space; the first direction is perpendicular to the second direction;

[0009] The three-phase high-voltage connector and the DC high-voltage connector are arranged outside the shell.

[0010] Optionally, in the above motor controller, the first copper bar is arranged close to the first shell wall of the shell;

[0011] The first copper busbar, the current sensor, the insulating seat and the power module are arranged in sequence along a first direction; the first copper busbar and the current sensor are bolted to a three-phase high-voltage connector disposed outside the first shell wall through mounting holes on the first shell wall;

[0012] The low-voltage connector is arranged close to the second shell wall of the shell, and first connecting columns are arranged at four corners of the low-voltage connector. The first connecting columns are bolted to the bottom wall of the shell.

[0013] Optionally, in the above-mentioned motor controller, support columns are arranged around the power module; a second connecting column is arranged on the bottom wall of the shell; the circuit board is bolted to the support columns and the second connecting columns so that the circuit board is suspended above the current sensor, the insulating seat, the power module and the low-voltage connector.

[0014] Optionally, in the above motor controller, four corners of the power module are provided with first fixing holes, and the first fixing holes are bolted to the bottom wall of the shell.

[0015] Optionally, in the above-mentioned motor controller, the second copper bar is arranged close to the second shell wall of the shell, and the second copper bar passes through the magnetic ring seat and is bolted to the pins of the mother capacitor and the DC high-voltage connector arranged outside the second shell wall of the shell.

[0016] Optionally, in the above motor controller, second fixing holes are provided at four corners of the mother capacitor, and the second fixing holes are bolted to the bottom wall of the housing;

[0017] The mother capacitor is provided with a first hole on a side close to the three-phase high-voltage connector, and the power module is provided with a second hole on a side away from the three-phase high-voltage connector. The second hole is bolted to the first hole.

[0018] Optionally, in the above-mentioned motor controller, a portion of the bottom wall of the shell corresponding to the power module is provided with a flow channel, a water inlet and a water outlet, the water inlet and the water outlet are both connected to the flow channel, and the water inlet and the water outlet are arranged along the second direction.

[0019] Optionally, in the above motor controller, a circle of grooves is provided on the bottom wall of the shell directly below the power module for fixing the sealing ring to isolate the cooling medium from the power module.

[0020] Optionally, in the above motor controller, the housing includes a casing and an upper cover, and the upper cover is arranged at the opening of the casing;

[0021] The housing and the upper cover are detachably connected; and / or

[0022] The housing and / or the cover are integrally formed; and / or

[0023] The casing and / or top cover are made of aluminum alloy or 3D printed nylon.

[0024] In a second aspect, the utility model provides a new energy vehicle, comprising a motor and a motor controller as described above and electrically connected to the motor.

[0025] It can be seen from the above technical solution that the interior of the shell is divided into a first space and a second space according to the first direction, and the first space and the second space are arranged side by side; the circuit board, the first copper busbar, the low-voltage connector, the power module, the insulating seat and the current sensor are located on the same layer and arranged in layers in the first space according to the second direction, and the circuit board and the first copper busbar are located on the same layer, and the current sensor, the insulating seat, the power module and the low-voltage connector are located on the same layer; the mother capacitor, the magnetic ring seat and the second copper busbar are arranged in the second space; the first direction is perpendicular to the second direction. It effectively reduces the number of components and the space occupied by the motor controller, making the internal components more compact, and the entire motor controller only occupies 3dm 3 The space is small, the volume is small and the weight is light, so that the whole motor controller can achieve a higher power density. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work, and the utility model can also be applied to other similar scenarios based on the provided drawings. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0027] Figure 1A three-dimensional diagram of a motor controller provided by an embodiment of the utility model;

[0028] Figure 2 A three-dimensional diagram of a motor controller provided by an embodiment of the utility model with the upper cover hidden;

[0029] Figure 3 A three-dimensional diagram of a motor controller provided by an embodiment of the utility model with the upper cover and the circuit board hidden;

[0030] Figure 4 An exploded diagram of a motor controller provided by an embodiment of the utility model;

[0031] Figure 5 A top view of a housing provided in an embodiment of the utility model;

[0032] In the figure: 1-housing, 2-circuit board, 3-first copper busbar, 4-current sensor, 5-insulating seat, 6-power module, 7-low-voltage connector, 8-mother capacitor, 9-magnetic ring seat, 10-second copper busbar, 11-three-phase high-voltage connector, 12-DC high-voltage connector, 13-sealing ring;

[0033] 1011- bracket, 1012- water inlet, 1013- water outlet, 1014- groove;

[0034] 201-first connecting column, 601-supporting column, 602-first fixing hole, 801-pin, 802-second fixing hole;

[0035] 101a-first shell wall, 101b-second shell wall, 101c-third shell wall, 101d-fourth shell wall, 101f-bottom wall; 101f1-second connecting column, 101f2-mounting hole, 101f3-mounting hole, 101f4-third connecting column, 101f5-fourth connecting column;

[0036] A-first space, A1-first sub-installation area, A2-second sub-installation area, A3-third sub-installation area, A4-fourth sub-installation area; B-second space. DETAILED DESCRIPTION

[0037] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. The described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0038] See also Figures 1 to 5The utility model provides a motor controller, including a shell 1, a circuit board 2 (Printed Circuit Board Assembly, referred to as PCBA), a first copper busbar 3, a current sensor 4, an insulating seat 5, a power module 6, a low-voltage connector 7, a mother capacitor 8, a magnetic ring seat 9, a second copper busbar 10, a three-phase high-voltage connector 11 and a DC high-voltage connector 12, wherein: the interior of the shell 1 is divided into a first space A and a second space B according to a first direction, and the first space A and the second space B are arranged side by side; the circuit board 2, the first copper busbar 3, the low-voltage connector 7, the power module 6, the insulating seat 5 and the current sensor 4 are located in the same layer and arranged in layers in the first space A according to a second direction, and the circuit board 2 and the first copper busbar 3 are located in the same layer, and the current sensor 4, the insulating seat 5, the power module 6 and the low-voltage connector 7 are located in the same layer; the mother capacitor 8, the magnetic ring seat 9 and the second copper busbar 10 are arranged in the second space B; the first direction is perpendicular to the second direction; the three-phase high-voltage connector 11 and the DC high-voltage connector 12 are arranged outside the shell 1.

[0039] The interior of the housing 1 is divided into a first space A and a second space B according to a first direction, and the first space A and the second space B are arranged side by side; the circuit board 2, the first copper busbar 3, the low-voltage connector 7, the power module 6, the insulating seat 5 and the current sensor 4 are located on the same layer and arranged in layers in the first space A according to a second direction, and the circuit board 2 and the first copper busbar 3 are located on the same layer, and the current sensor 4, the insulating seat 5, the power module 6 and the low-voltage connector 7 are located on the same layer; the mother capacitor 8, the magnetic ring seat 9 and the second copper busbar 10 are arranged in the second space B; the first direction is perpendicular to the second direction. It effectively reduces the number of components and the space occupied by the motor controller, making the internal components more compact, and the entire motor controller only occupies 3dm 3 The space is small, the volume is small and the weight is light, so that the whole motor controller can achieve a higher power density.

[0040] It should be noted that the shell 1 is a rectangular structure in a normal state, having a length direction, a height direction and a width direction. Taking the illustrated rectangular coordinate system as an example, the length direction corresponds to the first direction, the height direction corresponds to the second direction, and the width direction corresponds to the third direction. The first direction, the second direction and the third direction are perpendicular to each other.

[0041] The shell walls that surround the shell 1 include a first shell wall 101a, a second shell wall 101b, a third shell wall 101c, a fourth shell wall 101d, a top wall and a bottom wall 101f, wherein the first shell wall 101a, the second shell wall 101b, the third shell wall 101c, and the fourth shell wall 101d form side walls of the shell 1, and in the second direction, the top wall and the bottom wall 101f are respectively located at the top and bottom ends of the side walls.

[0042] In order to clearly understand the scheme of the utility model, the following definitions are made, but this does not mean that the arrangement of the shell walls is limited to this case. The arrangement direction of the entire motor controller can also be adjusted according to actual needs. The first shell wall 101a and the third shell wall 101c are arranged relative to each other in the first direction, the second shell wall 101b and the third shell wall 101c are arranged relative to each other in the third direction, and the top wall and the bottom wall 101f are arranged relative to each other in the second direction.

[0043] The three-phase high-voltage connector 11 and the DC high-voltage connector 12 can be arranged on any shell wall of the shell 1, for example, they can be arranged on different shell walls, they can also be arranged on different shell walls, and they can also be arranged on two adjacent shell walls respectively. In order to facilitate wiring and reduce interference caused by external cables between the three-phase high-voltage connector 11 and the DC high-voltage connector 12, in some examples of the utility model, the three-phase high-voltage connector 11 and the DC high-voltage connector 12 are located on different shell walls, and the choice of shell walls can be adjusted according to the arrangement position of the motor controller on the motor. The following is introduced by taking the three-phase high-voltage connector 11 arranged on the first shell wall 101a and the DC high-voltage connector 12 arranged on the second shell wall 101b as an example:

[0044] PCBA2 integrates various electronic components and realizes the construction of electronic component circuits. Its specific shape can be adjusted according to the layout of the electronic components. In the example of the utility model, PCBA2 is an L-shaped structure, and the position of the notch of PCBA2 is used for avoiding the first copper bus 3.

[0045] In some examples, the first copper busbar 3 is disposed close to the first shell wall 101 a of the shell 1 to facilitate connection with the three-phase high-voltage connector 11 .

[0046] In order to further optimize the arrangement of the first copper busbar 3, the current sensor 4, the insulating seat 5 and the power module 6, the first copper busbar 3, the current sensor 4, the insulating seat 5 and the power module 6 are arranged in sequence in the first direction; the first copper busbar 3 and the current sensor 4 are bolted to the three-phase high-voltage connector 11 arranged outside the first shell wall 101a through the mounting holes on the first shell wall 101a; in this example, the length of the first copper busbar in the third direction, the length of the current sensor 4 in the third direction, the length of the insulating seat 5 in the third direction, and the length of the power module 6 in the third direction are substantially the same. Therefore, such an arrangement can further optimize the arrangement of the components inside the shell 1.

[0047] It should be noted that PCBA2, the first copper busbar 3, the current sensor 4, the insulating seat 5, the power module 6, the low-voltage connector 7, the mother capacitor 8, the magnetic ring seat 9, the second copper busbar 10, the three-phase high-voltage connector 11 and the DC high-voltage connector 12 are all detachably connected to the housing 1 to facilitate the replacement of damaged parts and reduce maintenance costs.

[0048] The low-voltage connector 7 is arranged at a position corresponding to the plug-in position on the PCBA2. In the figure, the plug-in position on the PCBA2 is arranged close to the second shell wall 101b. The low-voltage connector 7 is arranged close to the second shell wall 101b of the shell 1. The four corners of the low-voltage connector 7 are provided with first connecting columns 201, and the first connecting columns 201 are bolted to the bottom wall 101f of the shell 1.

[0049] The circuit board 2 and the first copper bus 3 are located on the same layer, and the current sensor 4, the insulating seat 5, the power module 6 and the low-voltage connector 7 are located on the same layer. In the figure, in the second direction, PCBA2 is located on the upper layer of the current sensor 4, the insulating seat 5, the power module 6 and the low-voltage connector 7. In order to achieve a stable connection of PCBA2, in one implementation, the bottom wall 101f of the shell 1 is provided with a second connecting column 101f1; the circuit board 2 is bolted to the second connecting column 101f1 so that the circuit board 2 is suspended above the current sensor 4, the insulating seat 5, the power module 6 and the low-voltage connector 7.

[0050] In order to further improve the connection stability of PCBA2, support columns 601 are arranged around the power module 6, and the circuit board 2 is bolted to the support columns 601 so that the circuit board 2 is suspended above the power module 6.

[0051] The four corners of the power module 6 are provided with first fixing holes 602 , and the first fixing holes 602 are bolted to the bottom wall 101 f of the housing 1 .

[0052] It can be seen that the PCBA 2, the current sensor 4, the insulating seat 5, the power module 6 and the low-voltage connector 7 are all bolted to the bottom wall 101f.

[0053] The area corresponding to the bottom wall 101f and the first space A is introduced below, and is divided into the first sub-installation area A1, the second sub-installation area A2, the third sub-installation area A3 and the fourth sub-installation area A4 according to different installation components, wherein the first sub-installation area A1 is mainly used to arrange the first copper bar 3, the second sub-installation area A2 is used to arrange the power module 6, the area between the first sub-installation area A1 and the second sub-installation area A2 is used to arrange the current sensor 4 and the insulating seat 5, the third sub-installation area A3 is used to arrange the low-voltage connector 7, and the fourth sub-installation area A4 is used to arrange the PCBA 2. The shapes of the first sub-installation area A1, the second sub-installation area A2, the third sub-installation area A3 and the fourth sub-installation area A4 are substantially the same as the projection of the overall outline of the component to be installed in the second direction.

[0054] In order to enable PCBA2 to be suspended above the current sensor 4, the insulating seat 5, the power module 6 and the low-voltage connector 7, a second connecting column 101f1 is provided at the edge of the fourth sub-mounting area A4 to increase the installation height of PCBA2.

[0055] The second sub-mounting area A2 is provided with mounting holes 101f2 for mounting the current sensor 4 , the insulating seat 5 and the power module 6 , and the number of the mounting holes 101f2 matches the number of fixing holes on the current sensor 4 , the insulating seat 5 and the power module 6 .

[0056] The third sub-mounting area A3 is provided with mounting holes 101f3 for mounting the low-voltage connector 7 , and the number of the mounting holes 101f3 matches the number of the first connecting columns 201 on the low-voltage connector 7 .

[0057] The second copper bar 10, the magnetic ring seat 9 and the mother capacitor 8 are located in the second space B. In some examples, the second copper bar 10 is arranged close to the second shell wall 101b of the shell 1, and the second copper bar 10 passes through the magnetic ring seat 9 and is bolted to the pin 801 of the mother capacitor 8 and the DC high-voltage connector 12 arranged on the outside of the second shell wall 101b of the shell 1.

[0058] In one installation method for the mother capacitor 8, second fixing holes 802 are provided at the four corners of the mother capacitor 8, and the second fixing holes 802 are bolted to the bottom wall 101f of the shell 1; the mother capacitor 8 is provided with a first hole position (not shown) on the side close to the three-phase high-voltage connector 11, and the power module 6 is provided with a second hole position (not shown) on the side away from the three-phase high-voltage connector 11, and the second hole position is bolted to the first hole position.

[0059] The following introduces the area of ​​the bottom wall 101f corresponding to the second space B, including the third connecting column 101f4 and the fourth connecting column 101f5, wherein the third connecting column 101f4 is used to install the mother-stage capacitor 8, and the fourth connecting column 101f5 is used to install the magnetic ring seat 9.

[0060] The components of the motor controller are integrally assembled on the bottom wall 101f of the housing 1. The components are very convenient to assemble and have a compact layout, which is beneficial to improving the overall power density of the motor controller.

[0061] The second connecting column 101f1, the third connecting column 101f4 and the fourth connecting column 101f5 are mostly designed with reinforced bosses connected to the shell wall of the shell 1, and are chamfered to reduce the stress concentration phenomenon at the connection, thereby enhancing the structural stability of the motor controller shell 1.

[0062] The above mainly introduces the structure of the components installed inside or outside the housing 1. The following focuses on the structure of the housing 1:

[0063] In order to improve the heat dissipation efficiency of the motor controller, the utility model shows that the housing 1 is also provided with a flow channel, a water inlet 1012 and a water outlet 1013. The cooling medium is fed into the flow channel through the water inlet 1012, and exchanges heat with the internal components of the housing 1, and finally flows out from the water outlet 1013. The heat generated by the controller power module 6 is taken away to achieve a heat dissipation effect, so that the motor controller works within a reasonable temperature range, and the control stability of the motor controller is improved.

[0064] Since the power module 6 is the main heat generating module in the motor controller, in order to simplify the structure and reduce costs, the bottom wall 101f of the shell 1 corresponding to the power module 6 is provided with a flow channel, a water inlet 1012 and a water outlet 1013, and the water inlet 1012 and the water outlet 1013 are both connected to the flow channel.

[0065] In some examples, the water inlet 1012 and / or the water outlet 1013 are arranged along the second direction; in other examples, the water inlet 1012 and / or the water outlet 1013 are arranged along the first direction; in other examples, the water inlet 1012 and / or the water outlet 1013 are arranged along the third direction. In addition, the water inlet and outlet 1013 are both designed in the second direction, which reduces the space occupied by the motor controller and the cooling medium pipeline, and is conducive to the realization of the integrated operation of various components of the new energy vehicle.

[0066] A circle of grooves 1014 is provided on the bottom wall 101 f of the housing 1 directly below the power module 6 for fixing the sealing ring 13 to isolate the cooling medium from the power module 6 .

[0067] For easy installation, the housing 1 includes a casing and an upper cover, and the upper cover is arranged at the opening of the casing. In some examples, the casing and the upper cover are detachably connected; and / or the casing and / or the upper cover are integrally formed; and / or the casing and / or the upper cover are made of aluminum alloy or 3D printed nylon. It is a single part to avoid introducing processing errors, with a simple structure and low cost. The material can be selected from lightweight aluminum alloy or 3D printed nylon according to the processing technology, which is strong and durable. The two are positioned and fixedly connected by bolt connection, which is convenient and fast and easy to replace and repair internal components.

[0068] It should be noted that the motor controller described above is mainly used for controlling 800V motors, and can be limited to 800V motor controllers. In addition to new energy vehicles, other electric drive systems or electric control systems can have their integration level, control stability and power density improved accordingly.

[0069] The following is a preferred implementation of the utility model:

[0070] like Figure 1As shown, the motor controller includes an upper cover and a housing. The upper cover and the housing are fixed by bolts. A DC high-voltage connector 12 and a three-phase high-voltage connector 11 are provided on the outside of the housing to connect with other components of the three-electric system of the new energy vehicle to exchange signal flows and input power. The entire motor controller is fixed to the frame by bolts and nuts through brackets 1011 at the four corners.

[0071] The internal structure of the motor controller is as follows: Figure 2 As shown, the lower layer Figure 3 As shown, the overall explosion diagram of the motor controller is as follows Figure 4 shown.

[0072] The internal structure of the DC high-voltage connector 12 on one side mainly includes a mother capacitor 8, a magnetic ring seat 9, and a first copper busbar 3; the structure of the three-phase high-voltage connector 11 on one side is divided into two layers, the upper layer mainly includes PCBA2 and the first copper busbar 3, and the lower layer mainly includes a low-voltage connector 7, a power module 6, an insulating seat 5, a sealing ring 13 and a current sensor 4.

[0073] Among them, the four corners of the mother capacitor 8 have four mounting holes with larger diameters, which are bolted to the threaded holes of the connecting column of the bottom wall 101f of the casing, so as to realize the installation and fixation of the mother capacitor 8 on the bottom wall 101f of the casing. The mother capacitor 8 has six pins 801 on the side closer to the three-phase high-voltage connector 11 and is provided with corresponding holes, which correspond to the holes on the side of the power module 6 farther from the three-phase high-voltage connector 11 and are bolted.

[0074] The power module 6 is positioned through the mounting holes at the four corners and bolted to the bottom of the housing, wherein the side closer to the three-phase high-voltage connector 11 has two holes for connecting to the current sensor 4. In order to install the components on one side of the three-phase high-voltage connector 11, the insulating seat 5 is located at the bottom of the housing near the three-phase high-voltage connector 11, and is bolted and fixed through holes corresponding to the copper busbar and the current sensor 4. The second copper busbar 10 also has three mounting holes with larger diameters on the upper side near the housing wall, which are bolted to the three-phase high-voltage connector 11.

[0075] In addition, the low-voltage connector 7 is bolted to the bottom surface of the casing through the connecting columns at the four corners. There is a PCBA2 on the upper layer of the power module 6 and the low-voltage connector 7, in which various electronic components are integrated and the construction of the electronic component circuit is realized. There are support columns 601 around the power module 6 and a connecting column at the bottom of the casing, both of which are provided with threaded holes. The PCBA2 is bolted to the support columns 601 around the power module 6 and the connecting columns at the bottom of the casing, and the PCBA2 is suspended above the power module 6 in this way. There is a hole on each side of the magnetic ring seat 9, which is bolted to the casing. The copper busbar passes through the magnetic ring seat 9 and is bolted to the pin 801 of the mother capacitor 8 and the DC high-voltage connector 12 respectively.

[0076] The top view of the casing is as follows Figure 5 As shown, a water inlet 1012 and a water outlet 1013 are integrally formed, and the flow passages of the water inlet 1012 and the water outlet 1013 are in the height direction and are located below the power module 6. The cooling medium circulates through the flow passage to take away the heat generated by the power module 6 when it is working, thereby achieving the purpose of heat dissipation. In addition, a circle of grooves 1014 is opened in the housing 1 just below the power module 6 for fixing the sealing ring 13 to isolate the cooling medium from the power module 6.

[0077] The utility model also discloses a new energy vehicle, including a motor and a motor controller as described above which is electrically connected to the motor. Since the motor controller has the above beneficial effects, the new energy vehicle including the motor controller has corresponding effects, which will not be described in detail here.

[0078] In the above, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0079] In the description of the embodiments of the present invention, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in this article is only a way to describe the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0080] It should be noted that, for the convenience of description, only the parts related to the utility model are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the utility model can be combined with each other.

[0081] The above description is only a preferred embodiment of the utility model and an explanation of the technical principles used, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. The scope of the utility model involved in the utility model is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but also should cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the concept of the above-mentioned utility model. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the utility model (but not limited to) to form a technical solution.

Claims

1. A motor controller, characterized in that: It includes a housing, a circuit board, a first copper busbar, a current sensor, an insulating seat, a power module, a low-voltage connector, a mother capacitor, a magnetic ring seat, a second copper busbar, a three-phase high-voltage connector and a DC high-voltage connector, wherein: The interior of the housing is divided into a first space and a second space according to a first direction, and the first space and the second space are arranged side by side; the circuit board, the first copper busbar, the low-voltage connector, the power module, the insulating seat and the current sensor are located on the same layer and arranged in layers in the first space according to a second direction, and the circuit board and the first copper busbar are located on the same layer, and the current sensor, the insulating seat, the power module and the low-voltage connector are located on the same layer; the mother capacitor, the magnetic ring seat and the second copper busbar are arranged in the second space; the first direction is perpendicular to the second direction; The three-phase high-voltage connector and the DC high-voltage connector are arranged outside the shell.

2. The motor controller according to claim 1, characterized in that: The first copper bar is arranged close to the first shell wall of the shell; The first copper busbar, the current sensor, the insulating seat and the power module are arranged in sequence along a first direction; the first copper busbar and the current sensor are bolted to the three-phase high-voltage connector disposed outside the first shell wall through mounting holes on the first shell wall; The low-voltage connector is arranged close to the second shell wall of the shell, and first connecting columns are arranged at four corners of the low-voltage connector. The first connecting columns are bolted to the bottom wall of the shell.

3. The motor controller according to claim 2, characterized in that: The power module is provided with supporting columns around it; the bottom wall of the shell is provided with second connecting columns; the circuit board is bolted to the supporting columns and the second connecting columns so that the circuit board is suspended above the current sensor, the insulating seat, the power module and the low-voltage connector.

4. The motor controller according to claim 2, characterized in that: The four corners of the power module are provided with first fixing holes, and the first fixing holes are connected to the bottom wall of the shell by bolts.

5. The motor controller according to claim 1, characterized in that: The second copper bar is arranged close to the second shell wall of the shell, passes through the magnetic ring seat, and is bolted to the pins of the parent capacitor and the DC high-voltage connector arranged outside the second shell wall of the shell.

6. The motor controller according to claim 1, characterized in that: The four corners of the mother capacitor are provided with second fixing holes, and the second fixing holes are bolted to the bottom wall of the housing; The mother capacitor is provided with a first hole on a side close to the three-phase high-voltage connector, and the power module is provided with a second hole on a side away from the three-phase high-voltage connector, and the second hole is bolted to the first hole.

7. The motor controller according to claim 1, characterized in that: A flow channel, a water inlet and a water outlet are provided at a portion of the bottom wall of the shell corresponding to the power module. The water inlet and the water outlet are both connected to the flow channel, and the water inlet and the water outlet are arranged along the second direction.

8. The motor controller according to claim 7, characterized in that: A circle of grooves is provided at the bottom wall of the shell directly below the power module for fixing a sealing ring to isolate the cooling medium from the power module.

9. The motor controller according to any one of claims 1 to 8, characterized in that: The housing comprises a casing and an upper cover, wherein the upper cover is arranged at an opening of the casing; The housing is detachably connected to the upper cover; and / or The housing and / or the upper cover are integrally formed; and / or The housing and / or the upper cover are made of aluminum alloy or 3D printed nylon.

10. A new energy vehicle, characterized in that: The invention comprises a motor and a motor controller as claimed in any one of claims 1 to 9 electrically connected to the motor.

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