Motor controller, electric drive assembly and vehicle

Abstract

The utility model relates to a motor controller, an electric drive assembly and a vehicle. The motor controller comprises a shell, a control and drive integrated plate, a capacitor and a filter. The interior of the shell is hollow, the hollow part comprises an upper cavity and a lower cavity which are distributed up and down, and the upper cavity comprises separated independent cavities; the control and drive integrated plate is arranged in the upper cavity, the control and drive integrated plate comprises a control part and a drive part, and the control part is located and isolated in the independent cavity; the capacitor is arranged in the lower cavity; and a filter disposed within the lower chamber, the filter being isolated from the capacitor. Therefore, the overall structure is compact in layout, high in EMC level and low in cost.

Description

Technical Field

[0001] The utility model relates to the field of control equipment manufacturing, in particular to a motor controller, an electric drive assembly and a vehicle. Background Art

[0002] With the development of electric vehicle technology, the functions of the whole vehicle are becoming more and more complex, and the layout of the whole vehicle is becoming more and more compact, so its various components need to be lighter and more efficient. In electric vehicles, the motor controller is a key component to realize the driving operation of the motor and is a core component of electric vehicles. R&D personnel have been pursuing smaller size, lighter weight, more compact structure, and higher power density requirements. In addition, they also pursue lower costs while achieving higher efficiency, lighter weight, and higher power density. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] According to a first aspect of an embodiment of the present utility model, there is provided a motor controller, comprising:

[0005] The shell is hollow inside, and the hollow part includes an upper chamber and a lower chamber distributed up and down, and the upper chamber includes a separated independent cavity;

[0006] A control-drive integrated board is arranged in the upper chamber, the control-drive integrated board comprises a control part and a drive part, and the control part is located and isolated in the independent chamber;

[0007] A capacitor disposed in the lower chamber; and

[0008] A filter is arranged in the lower chamber, and the filter is isolated from the capacitor.

[0009] In some embodiments, the motor controller also includes a power module, and the power module and the capacitor are arranged in upper and lower layers, the power module is arranged above the capacitor, a cooling channel is provided between the power module and the capacitor, and the power module and the capacitor share the cooling channel to dissipate heat.

[0010] In some embodiments, an upper cover plate is provided on the top of the shell, and the control drive integrated board is in contact with the ribs of the upper cover plate and the shell for grounding.

[0011] In some embodiments, the motor controller further includes an external connector portion, and the external connector portion is grounded to the control and drive integrated board through ribs of the upper cover plate.

[0012] In some embodiments, the motor controller further includes an active discharge board, and the active discharge board is integrally formed with the control drive integrated board.

[0013] In some embodiments, the motor controller further includes high voltage direct current, and the high voltage direct current is arranged on one side of the control and drive integrated board along a first direction; or the high voltage direct current is arranged on one side of the control and drive integrated board along a second direction.

[0014] In some embodiments, a cooling channel is provided at the bottom of the filter.

[0015] In some embodiments, the power module is a sic module, and the power density of the sic module can reach 50kw / L.

[0016] According to a second aspect of an embodiment of the utility model, there is provided an electric drive assembly, comprising a motor controller as described in any one of the implementation schemes in the first aspect.

[0017] According to a third aspect of an embodiment of the utility model, a vehicle is provided, comprising a motor controller as described in any one of the implementation schemes in the first aspect.

[0018] The utility model provides a motor controller, an electric drive assembly and a vehicle with a compact structure and high EMC protection. The various components in the motor controller are individually isolated by a shell, and the control drive integrated board is arranged on the upper part of the shell, and the filter and the capacitor are arranged on the lower part of the shell. The structure is compact and the EMC level is high. While ensuring the performance, the internal components are reduced and the cost is reduced.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features and advantages of the present invention are described below, which explains the present invention in more detail based on embodiments in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the structure of a traditional motor controller;

[0022] Figure 2 It is a structural schematic diagram of a motor controller according to an embodiment of the utility model;

[0023] Figure 3 It is a partial structural schematic diagram of a motor controller according to an embodiment of the utility model;

[0024] Figure 4It is a schematic diagram of the layout of the internal components of a motor controller according to an embodiment of the utility model;

[0025] Figure 5 A top view of a motor controller according to an embodiment of the utility model;

[0026] Figure 6 It is a cross-sectional view of a motor controller according to an embodiment of the utility model. Description of the drawings:

[0028] 100, motor controller; 110, control-drive integrated board; 111, control unit; 112, drive unit; 120, active discharge board; 130, capacitor; 131, inlet; 132, outlet; 140, filter; 150, power module; 160, housing; 161, inner wall; 162, upper cover; 1621, ribs; 170, high-voltage direct current; 180, three-phase terminal block; 190, air valve; 191, external connector part.

[0029] 200, motor controller; 210, control board; 211, shielding board; 230, capacitor; 240, filter. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be noted that the terms "upper", "lower", "left", "right", "front", "back" and similar expressions used herein are only for the purpose of illustration and are not intended to limit the present invention.

[0031] In addition, 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. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] At present, the structure of the conventional motor controller 200 is as follows Figure 1 As shown. The motor controller 200 includes a control board 210 and a drive board, and the two boards are connected by a connector. At the same time, in order to meet EMC requirements, a shielding plate 211 is also provided between the control board 210 and the drive board. The capacitor 230 and the filter 240 in the motor controller 200 are arranged in parallel with the control board 210 in the first direction. The entire structure is not compact, the volume is large, the application space is limited, and the manufacturing cost is high.

[0035] The utility model provides a motor controller 100, which isolates each component separately, has a compact structure, a high EMC level and low cost, and is referred to below. Figure 1-Figure 6 The motor controller 100 according to the embodiment of the present invention is described.

[0036] like Figure 2-Figure 4 As shown, the motor controller 100 according to the embodiment of the present utility model includes a control and drive integrated board 110 , a capacitor 130 , a filter 140 and a housing 160 .

[0037] The shell 160 is hollow, and the hollow part includes an upper chamber and an upper chamber distributed up and down, and the upper chamber includes a separated independent cavity; the control-drive integrated board 110 is arranged in the upper chamber and includes a control unit 111 and a drive unit 112, and the control unit 111 is located and isolated in the independent cavity. Specifically, in the present application, an upper cover plate 162 is provided on the top of the shell, and the ribs 1621 of the upper cover plate 162 are in contact with the shell 160 and the control-drive integrated board 110 for grounding treatment, thereby forming an independent cavity. The control unit 111 and the drive unit 112 of the control-drive integrated board 110 are connected through the internal wiring layer of the PCB. Compared with the existing control board and drive board, the control-drive integrated board in the present application only has a different connection form between the control board and the drive board (i.e., the present application adopts a control-drive integrated board, the control unit 111 and the drive unit 112 are connected through the internal wiring layer of the PCB, and the existing external wiring harness and connector connecting the control board and the drive board are eliminated), and the control-drive principle is the same (i.e., the control unit 111 receives an external control signal, and the control signal is transmitted to the drive unit 112, thereby controlling the operation of the drive motor); the capacitor 130 and the filter 140 are arranged in the lower chamber, and the capacitor 130 and the filter 140 are isolated. Specifically, the capacitor 130 and the filter 140 are isolated by the inner wall 161 of the shell.

[0038] The motor controller 100 of the embodiment of the utility model combines the control board and the drive board into one control-drive integrated board 110, cancels the connector between the two, and reduces the cost. At the same time, the control circuit part of the control unit is located in an independent cavity, and the shielding plate between the control board and the drive board can be cancelled, and the EMC capability can also be improved; by placing the filter 140 and the capacitor 130 under the shell, the distance of the motor controller 100 in the first direction is shortened (about 10-15%), and the shell and its inner wall are used to isolate the various components and block the propagation path, so as to achieve a compact overall layout structure, obvious EMC effect and low cost.

[0039] In some embodiments, the control unit 111 includes at least a PCB control circuit part, that is, at least the PCB control circuit part is isolated as an independent cavity, and the control drive integrated board 110 is grounded through the housing 160, the inner wall 161 and the upper cover 162. The structural design of the motor controller is simplified, the entire layout structure is compact, and the EMC effect is obvious.

[0040] For further information, see Figure 2 and Figure 5According to the embodiment of the utility model, the motor controller 100 further includes an external connector part 191, i.e., a low-voltage signal part, including a low-voltage connector, which is grounded to the control-drive integrated board 110 through the ribs 1621 of the upper cover 162. Thus, while ensuring the performance, the parts are reduced, the cost is reduced, the motor controller structure is further simplified, the entire layout structure is more compact, and the EMC effect is more obvious.

[0041] The motor controller 100 according to the embodiment of the present invention further includes a power module 150, which is arranged above the capacitor 130, that is, the power module 150 and the capacitor 130 are arranged in upper and lower layers. Figure 4 As shown, the power module 150 is arranged between the capacitor 130 and the control drive integrated board 110. A cooling channel is provided between the power module 150 and the capacitor 130 to separate the two. The power module 150 and the capacitor 130 share the cooling channel to dissipate heat. Figure 6 The cooling channel includes an inlet 131 and an outlet 132. The use of a common cooling channel can simplify the path of the channel, improve the heat dissipation capacity of the capacitor, and reduce the volume of the capacitor. The cooling channel can be a cooling water channel. While simplifying the channel design, the system flow resistance can be reduced.

[0042] The motor controller 100 according to the embodiment of the present invention further includes an active discharge plate 120, see Figure 5 The active discharge board 120 and the control drive integrated board are designed and formed as one piece, making the entire layout structure of the motor controller more compact.

[0043] In some embodiments, the motor controller 100 further includes a high voltage direct current (HVDC) 170, such as Figure 2 and Figure 3 As shown, the high voltage direct current 170 is arranged on one side of the control and drive integrated board 110 along the first direction.

[0044] In addition, in some embodiments, according to the position of the vehicle, the high-voltage direct current 170 can be arranged on one side of the control-drive integrated board 110 along the second direction to further reduce the size of the motor controller in the first direction. The second direction is perpendicular to the first direction. In a specific embodiment, the first direction may be the length direction of the motor controller 100, and the second direction may be the width direction of the motor controller 100. In other words, the high-voltage direct current 170 is arranged on one side of the control-drive integrated board 110 along the width direction of the motor controller 100, which can further reduce the size of the motor controller in the length direction. Of course, if it is necessary to reduce the size of the motor controller in the width direction, the high-voltage direct current 170 can be arranged on one side of the control-drive integrated board 110 along the length direction of the motor controller 100.

[0045] See also Figure 2-Figure 4 The motor controller 100 according to the embodiment of the utility model further includes a three-phase terminal block 180 and a breathable valve 190, and the breathable valve 190 is disposed on the outer shell of the housing 160 and is sealed and connected to the housing. The three-phase terminal block 180 is arranged in the housing 160 and is separated from the components in the motor controller (for example, the board-end rotary connector) by the inner wall of the housing.

[0046] In some embodiments, a cooling channel is provided at the bottom of the filter 140, and the cooling channel is used to dissipate heat from the copper busbar inside the filter, thereby reducing the cross-sectional area of ​​the copper busbar and reducing the volume of the filter 140 to a certain extent.

[0047] In some embodiments, the power module 150 may be a high-voltage SIC module, and the power density of the high-voltage SIC module may reach 50 kW / L.

[0048] In some embodiments, a lower cover plate is provided at the bottom of the housing 160, and the lower cover plate is used to seal the lower cavity, and the lower cover plate is formed by stamping, which can further reduce the cost compared with the die-casting method.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0050] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A motor controller, characterized in that: include: The shell is hollow inside, and the hollow part includes an upper chamber and a lower chamber distributed up and down, and the upper chamber includes a separated independent cavity; A control-drive integrated board is arranged in the upper chamber, the control-drive integrated board comprises a control part and a drive part, and the control part is located and isolated in the independent chamber; A capacitor is arranged in the lower chamber; as well as A filter is arranged in the lower chamber, and the filter is isolated from the capacitor.

2. The motor controller according to claim 1, characterized in that: It also includes a power module, which is arranged in upper and lower layers with the capacitor. The power module is arranged above the capacitor. A cooling channel is provided between the power module and the capacitor. The power module and the capacitor share the cooling channel to dissipate heat.

3. The motor controller according to claim 2, characterized in that: The power module is a sic module, and the power density of the sic module can reach 50kw / L.

4. The motor controller according to claim 1 or 2, characterized in that: An upper cover plate is provided on the top of the shell, and the control-drive integrated board is in contact with the ribs of the upper cover plate and the shell for grounding.

5. The motor controller according to claim 4, characterized in that: It also includes an external connector part, which is grounded to the control and drive integrated board through the ribs of the upper cover plate.

6. The motor controller according to claim 1 or 2, characterized in that: It also includes an active discharge plate, which is integrally formed with the control and drive integrated plate.

7. The motor controller according to claim 1 or 2, characterized in that: It also includes high-voltage direct current, which is arranged on one side of the control and drive integrated board along a first direction; or, the high-voltage direct current is arranged on one side of the control and drive integrated board along a second direction.

8. The motor controller according to claim 1 or 2, characterized in that: A cooling channel is provided at the bottom of the filter.

9. An electric drive assembly, characterized in that: Comprising a motor controller as claimed in any one of claims 1-8.

10. A vehicle, characterized in that: Comprising a motor controller as claimed in any one of claims 1-8.

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