Motor controller, power system and electric vehicle

Abstract

The utility model provides a motor controller, a power system and an electric vehicle, the motor controller comprises a housing and a movement, and the housing is provided with an accommodating cavity, a liquid inlet channel and a liquid discharge channel; the movement is arranged in the accommodating cavity; the machine core comprises a capacitor assembly, a bridge tube assembly and a diversion structure; the capacitor assembly is arranged in the accommodating cavity; the axle tube assembly is arranged on the capacitor assembly, and the axle tube assembly is provided with a liquid cooling channel; the diversion structure is arranged between the capacitor assembly and the bridge tube assembly, a diversion channel of the diversion structure is communicated with the liquid cooling channel, a diversion inlet is communicated with the liquid inlet channel, and a diversion outlet is communicated with the liquid discharge channel. The motor controller provided by the utility model solves the problems that the motor controller in the prior art is provided with the control liquid cooling channel on the shell, the arrangement of the control liquid cooling channel is more complex, the layout of the water sump on the shell is increased, and in addition, the overall appearance size of the motor controller is larger, so that the miniaturization design of the motor controller is not facilitated.

Description

Technical Field

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

[0002] New energy vehicles do not generate power by burning gasoline or diesel, so they have many characteristics such as environmental protection and low pollution. With the vigorous promotion and application of new energy power generation such as hydropower, wind power, solar power and nuclear power, many new energy vehicles are gradually being promoted and applied, such as new energy electric cars, new energy electric buses, new energy electric trucks, new energy electric cleaning vehicles, new energy electric rail vehicles, new energy electric flying vehicles, new energy electric shipping vehicles, etc.

[0003] New energy vehicles are generally equipped with batteries, motor control devices, motors and power generation devices. The power tube in the motor control device receives the DC power output by the battery, and converts the DC power into AC power to output to the motor. The motor then outputs a rotational driving force to drive the power generation devices such as wheels and paddles, and then drive the vehicle to move.

[0004] However, the existing motor controller sets a control liquid cooling channel on the shell, and the setting of the control liquid cooling channel is relatively complicated, which increases the layout of the water tank on the shell. In addition, the overall size of the motor controller is large, which is not conducive to the miniaturization design of the motor controller. Utility Model Content

[0005] The main purpose of the present utility model is to provide a motor controller, a power system and an electric vehicle to solve the problem that the motor controller in the prior art is provided with a control liquid cooling channel on the shell, but the setting of the control liquid cooling channel is relatively complicated, and the layout of the water tank on the shell is increased. In addition, the overall external dimensions of the motor controller are large, which is not conducive to the miniaturization design of the motor controller.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a motor controller is provided, including a shell and a movement, wherein the shell has a accommodating cavity, a liquid inlet channel, and a liquid discharge channel; the movement is arranged in the accommodating cavity; the movement includes a capacitor assembly, a bridge tube assembly and a guide structure, and the capacitor assembly is arranged in the accommodating cavity; the bridge tube assembly is arranged on the capacitor assembly, and the bridge tube assembly has a liquid cooling channel; the guide structure is arranged between the capacitor assembly and the bridge tube assembly, and the guide structure has a guide channel and a guide inlet and a guide outlet connected to the guide channel, the guide channel is connected to the liquid cooling channel, the guide inlet is connected to the liquid inlet channel, and the guide outlet is connected to the liquid discharge channel.

[0007] Furthermore, the flow guide inlet and the flow guide outlet are both located on the surface of the flow guide structure facing the capacitor assembly, and the upper surface of the capacitor assembly is arranged to avoid the flow guide inlet and the flow guide outlet.

[0008] Furthermore, the flow guide inlet and the flow guide outlet are located on the same side of the width direction of the flow guide structure.

[0009] Furthermore, the bridge pipe assembly includes a plurality of liquid-cooled bridge bodies, which are spaced apart along the length direction of the flow-guiding structure, and each liquid-cooled bridge body extends along the width direction of the flow-guiding structure, and each liquid-cooled bridge body has a liquid-cooling channel; the flow-guiding structure has a plurality of groups of connecting port groups on its surface facing the bridge pipe assembly, and one group of connecting port groups includes two connecting ports, and the two connecting ports in the same group of connecting port groups are spaced apart along the width direction of the flow-guiding structure, and are respectively connected to the inlet and outlet of the same liquid-cooling channel.

[0010] Furthermore, the outer periphery of the guide structure is protruded with a plurality of assembly lugs, each of which is provided with an assembly hole. The motor controller also includes a plurality of fasteners, each of which passes through a corresponding assembly hole and is connected to a support column on the shell.

[0011] Furthermore, the bridge tube assembly includes a plurality of liquid-cooled bridge bodies, which are arranged at intervals along the length direction of the guide structure, and each liquid-cooled bridge body extends along the width direction of the guide structure, and each liquid-cooled bridge body has a liquid cooling channel; a plurality of power tubes are arranged on both sides of the width direction of each liquid-cooled bridge body, and a copper busbar structure is arranged on the upper surface of each liquid-cooled bridge body facing away from the guide structure.

[0012] Furthermore, the movement also includes a substrate, which is arranged on the bridge tube assembly. The copper busbar structure is connected to the liquid-cooled bridge body by riveting, and each copper busbar structure is provided with a plurality of pins protruding in a direction away from the guide structure, and each pin is electrically connected to the substrate.

[0013] According to another aspect of the present invention, a power system is provided, including a motor controller and a motor, wherein the motor controller is connected to the motor control, and the motor controller is the above-mentioned motor controller.

[0014] According to another aspect of the present invention, an electric vehicle is provided, comprising a power system, which is the power system described above.

[0015] By applying the technical solution of the present invention, a guide structure is set between the capacitor assembly and the bridge tube assembly of the movement. At the same time, the guide structure has a guide channel and a guide inlet and a guide outlet connected to the guide channel. The guide channel is connected to the liquid cooling channel of the bridge tube assembly, the guide inlet is connected to the liquid inlet channel of the shell, and the guide outlet is connected to the liquid discharge channel of the shell. Although a guide structure is added, there is no need to layout a large number of water tanks on the shell, which fully utilizes the accommodating cavity space of the shell of the motor controller, improves the compactness of the overall structure, and is conducive to the miniaturized design of the motor controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the exploded structure of a motor controller according to an optional embodiment of the present utility model is shown;

[0018] Figure 2 Shown Figure 1 A schematic diagram of the structure of the movement's guide structure and the bridge tube assembly in an assembled state;

[0019] Figure 3 Shown Figure 2 A schematic diagram of the structure of the guide structure and the bridge pipe assembly from a top view;

[0020] Figure 4 Shown Figure 3 A schematic structural diagram of the diversion structure from a bottom perspective;

[0021] Figure 5 Shown Figure 3 A schematic cross-sectional view of the flow guide structure and the bridge pipe assembly;

[0022] Figure 6 Shown Figure 4 Schematic diagram of the layout structure of the diversion inlet, diversion outlet and diversion channel of the diversion structure.

[0023] The above drawings include the following reference numerals:

[0024] 10. Capacitor assembly;

[0025] 20. Bridge tube assembly; 21. Liquid-cooled bridge body; 211. Liquid-cooled channel; 2111. Liquid-cooled inlet; 2112. Liquid-cooled outlet; 22. Power tube;

[0026] 30. Flow diversion structure; 31. Flow diversion channel; 311. First sub-channel; 312. Second sub-channel; 3121. First channel section; 3122. Second channel section; 313. Third sub-channel; 32. Flow diversion inlet; 33. Flow diversion outlet; 34. Communication port; 35. Assembly lug; 351. Assembly hole;

[0027] 40. Copper busbar structure; 50. Base plate; 60. Protective cover; 70. Laminated busbar assembly. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In order to solve the problem that the motor controller in the prior art sets a control liquid cooling channel 211 on the shell, but the setting of the control liquid cooling channel 211 is relatively complicated, the layout of the water tank on the shell is increased, and in addition, the overall size of the motor controller is large, which is not conducive to the miniaturization design of the motor controller, the utility model provides a motor controller, a power system and an electric vehicle, wherein the power system includes a motor controller and a motor, the motor controller is connected to the motor control, and the motor controller is the motor controller mentioned above and below; the electric vehicle includes a power system, and the power system is the power system mentioned above and below.

[0030] like Figures 1 to 6 As shown, the motor controller includes a shell and a movement, the shell has a accommodating cavity, a liquid inlet channel, and a liquid discharge channel; the movement is arranged in the accommodating cavity; the movement includes a capacitor assembly 10, a bridge tube assembly 20 and a guide structure 30, and the capacitor assembly 10 is arranged in the accommodating cavity; the bridge tube assembly 20 is arranged on the capacitor assembly 10, and the bridge tube assembly 20 has a liquid cooling channel 211; the guide structure 30 is arranged between the capacitor assembly 10 and the bridge tube assembly 20, and the guide structure 30 has a guide channel 31 and a guide inlet 32 ​​and a guide outlet 33 connected to the guide channel 31, the guide channel 31 is connected to the liquid cooling channel 211, the guide inlet 32 ​​is connected to the liquid inlet channel, and the guide outlet 33 is connected to the liquid discharge channel.

[0031] By applying the technical solution of the present invention, a guide structure 30 is set between the capacitor assembly 10 and the bridge tube assembly 20 of the movement. At the same time, the guide structure 30 has a guide channel 31 and a guide inlet 32 ​​and a guide outlet 33 connected to the guide channel 31. The guide channel 31 is connected to the liquid cooling channel 211 of the bridge tube assembly 20, the guide inlet 32 ​​is connected to the liquid inlet channel of the shell, and the guide outlet 33 is connected to the liquid discharge channel of the shell. Although a guide structure 30 is added, there is no need to layout a large number of water tanks on the shell, which fully utilizes the accommodating cavity space of the motor controller shell, improves the compactness of the overall structure, and is conducive to the miniaturized design of the motor controller.

[0032] It should be noted that in the present application, the diversion inlet 32 ​​and the diversion outlet 33 are both located on the surface of the diversion structure 30 facing the capacitor assembly 10, and the upper surface of the capacitor assembly 10 is arranged away from the diversion inlet 32 ​​and the diversion outlet 33. In this way, while ensuring the compactness of the overall structure of the motor controller, the reliability of the connection between the diversion inlet 32 ​​and the liquid inlet channel, and the reliability of the connection between the diversion outlet 33 and the liquid discharge channel are ensured.

[0033] like Figure 6 As shown, the diversion inlet 32 ​​and the diversion outlet 33 are located on the same side of the width direction of the diversion structure 30. In this way, it is only necessary to open the liquid inlet channel and the liquid discharge channel on the same side of the shell, without having to layout a large range of water channels on the shell.

[0034] like Figures 1 to 4 As shown, the bridge tube assembly 20 includes a plurality of liquid-cooling bridge bodies 21, which are spaced apart along the length of the flow guide structure 30. Each liquid-cooling bridge body 21 extends along the width of the flow guide structure 30, and each liquid-cooling bridge body 21 has a liquid-cooling channel 211. The flow guide structure 30 has a plurality of groups of communication ports 34 on a surface facing the bridge tube assembly 20. Each group of communication ports 34 includes two communication ports 34, and the two communication ports 34 in the same group of communication ports 34 are spaced apart along the width of the flow guide structure 30 and respectively communicate with the liquid-cooling inlet 2111 and outlet of the same liquid-cooling channel 211. This ensures that each liquid-cooling channel 211 can communicate with the flow guide channel 31, thereby ensuring reliable cooling of the power tubes 22, and further ensuring that the power tubes 22 can operate in a suitable environment, thereby ensuring reliable operation of the power tubes 22.

[0035] like Figure 5 and Figure 6As shown, the guide channel 31 includes a first sub-channel 311, which extends a first preset distance L1 along the length direction of the guide structure 30 and is located on the first side of the width direction of the guide structure 30. The first end of the first sub-channel 311 is connected to the guide inlet 32, and the second end of the first sub-channel 311 is a closed end. The first sub-channel 311 is connected to N connecting ports 34 located on the first side of the width direction of the guide structure 30, and each connecting port 34 is connected to the liquid cooling inlet 2111 of N corresponding liquid cooling channels 211; wherein, the first preset distance L1 and the length L of the guide structure 30 satisfy: L1<L / 2. The guide channel 31 also includes a second sub-channel 312, which extends a second preset distance L2 along the length direction of the guide structure 30 and is located on the second side of the width direction of the guide structure 30. The second sub-channel 312 has a first channel section 3121, and the first channel section 3121 is arranged opposite to the first sub-channel 311; the first channel section 3121 is connected to the liquid cooling outlet 2112 of the N liquid cooling channels 211 located on the second side of the width direction of the guide structure 30; wherein, the second preset distance L2 and the length L of the guide structure 30 satisfy: L2<L. The second sub-channel 312 also has a second channel section 3122, which is connected to the first channel section 3121, and the second channel section 3122 is connected to the liquid cooling inlet 2111 of the M liquid cooling channels 211 located on the second side of the width direction of the guide structure 30; the guide channel 31 also includes a third sub-channel 313, which extends a third preset distance L3 along the length direction of the guide structure 30 and is located on the first side of the width direction of the guide structure 30, the first end of the third sub-channel 313 is a closed end, and the second end of the third sub-channel 313 is connected to the guide outlet 33; wherein, the third sub-channel 313 is connected to the M connecting ports 34 located on the first side of the width direction of the guide structure 30, and each connecting port 34 is connected to the liquid cooling outlet 2112 of the M corresponding liquid cooling channels 211; the number of liquid cooling channels 211 Z=M+N. In this way, by dividing Z liquid cooling channels 211 into two groups, one group includes M liquid cooling channels 211, and the other group includes N liquid cooling channels 211, and the guide channel 31 is set to a structural form including a first sub-channel 311, a second sub-channel 312, and a third sub-channel 313, and the second sub-channel 312 is further set to include a first channel section 3121 and a second channel section 3122 that are connected, it is ensured that all liquid cooling channels 211 can be connected to the guide channel 31.

[0036] It should be noted that in this application, Figure 6 The horizontal arrows in represent the flow direction of the fluid in the guide channel 31 , and the vertical arrows represent the flow direction of the fluid in the liquid-cooling channel 211 .

[0037] like Figure 2 and Figure 3 As shown, the outer periphery of the flow guide structure 30 is provided with a plurality of mounting lugs 35, each of which is provided with a mounting hole 351. The motor controller also includes a plurality of fasteners, each of which passes through a corresponding mounting hole 351 and connects to a support column on the housing. This ensures a reliable connection between the flow guide structure 30 and the housing.

[0038] In addition, in the present application, the sealing structure between the flow-guiding structure 30 and the housing is an axial seal.

[0039] like Figure 1 As shown, the bridge tube assembly 20 includes a plurality of liquid-cooled bridge bodies 21, and the plurality of liquid-cooled bridge bodies 21 are spaced apart along the length direction of the guide structure 30, and each liquid-cooled bridge body 21 extends along the width direction of the guide structure 30, and each liquid-cooled bridge body 21 has a liquid-cooling channel 211; a plurality of power tubes 22 are provided on both sides of the width direction of each liquid-cooled bridge body 21, and a copper busbar structure 40 is provided on the upper surface of the side of each liquid-cooled bridge body 21 away from the guide structure 30. In this way, by arranging the copper busbar structure 40 on the upper surface of the liquid-cooled bridge body 21 away from the guide structure 30, it is avoided that the copper busbar structure 40 is arranged on the side of the liquid-cooled bridge body 21 and occupies the space between two adjacent liquid-cooled bridge bodies 21, that is, the distance in the lateral direction of the movement is shortened, making the lateral direction of the movement more compact (refer to Figure 1 ), making full use of the space in the height direction of the accommodating cavity to ensure the compactness of the overall structure of the motor controller.

[0040] like Figure 1 As shown, the movement also includes a base plate 50, which is mounted on the bridge tube assembly 20. The copper busbar structure 40 is connected to the liquid-cooling bridge body 21 by riveting. Each copper busbar structure 40 is provided with a plurality of pins protruding in a direction away from the guide structure 30, each pin being electrically connected to the base plate 50. This ensures the reliability of the electrical connection between each copper busbar structure 40 and the base plate 50.

[0041] like Figure 1 As shown, the movement also includes a protective cover 60 and a laminated busbar assembly 70, wherein the protective cover 60 is provided on the capacitor assembly 10 and accommodates all components in the space between the capacitor assembly 10 and the protective cover 60, thereby protecting all components; in addition, the laminated busbar assembly 70 is sandwiched between the layer where the copper busbar structure 40 is located and the substrate 50.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0044] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0046] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A motor controller, characterized in that: include: A housing, the housing comprising a receiving cavity, a liquid inlet channel, and a liquid discharge channel; a movement, the movement being arranged in the accommodating cavity; The movement comprises: A capacitor assembly (10), the capacitor assembly (10) being arranged in the accommodating cavity; A bridge tube assembly (20), the bridge tube assembly (20) being arranged on the capacitor assembly (10), the bridge tube assembly (20) having a liquid cooling channel (211); A flow guiding structure (30), the flow guiding structure (30) being arranged between the capacitor assembly (10) and the bridge tube assembly (20), and the flow guiding structure (30) having a flow guiding channel (31) and a flow guiding inlet (32) and a flow guiding outlet (33) communicating with the flow guiding channel (31), the flow guiding channel (31) being communicated with the liquid cooling channel (211), the flow guiding inlet (32) being communicated with the liquid inlet channel, and the flow guiding outlet (33) being communicated with the liquid discharge channel.

2. The motor controller according to claim 1, characterized in that: The flow guide inlet (32) and the flow guide outlet (33) are both located on the surface of the flow guide structure (30) facing the capacitor assembly (10), and the upper surface of the capacitor assembly (10) is arranged to avoid the flow guide inlet (32) and the flow guide outlet (33).

3. The motor controller according to claim 2, characterized in that: The flow guide inlet (32) and the flow guide outlet (33) are located on the same side of the width direction of the flow guide structure (30).

4. The motor controller according to claim 1, wherein: The bridge pipe assembly (20) includes a plurality of liquid-cooling bridge bodies (21), the plurality of liquid-cooling bridge bodies (21) are arranged at intervals along the length direction of the flow-guiding structure (30), and each of the liquid-cooling bridge bodies (21) extends along the width direction of the flow-guiding structure (30), and each of the liquid-cooling bridge bodies (21) has the liquid-cooling channel (211); The guide structure (30) has a plurality of communication port groups on a surface on one side facing the bridge pipe assembly (20), one of the communication port groups including two communication ports (34), and the two communication ports (34) in the same group of communication ports (34) are spaced apart along the width direction of the guide structure (30) and are respectively connected to the liquid cooling inlet (2111) and outlet of the same liquid cooling channel (211).

5. The motor controller according to any one of claims 1 to 4, characterized in that: The outer periphery of the flow guide structure (30) is provided with a plurality of assembly lugs (35) protruding therefrom, and each assembly lug (35) is provided with an assembly hole (351). The motor controller further comprises a plurality of fasteners, each of the fasteners passing through a corresponding assembly hole (351) and connected to a support column on the housing.

6. The motor controller according to claim 1, characterized in that: The bridge pipe assembly (20) includes a plurality of liquid-cooling bridge bodies (21), the plurality of liquid-cooling bridge bodies (21) are arranged at intervals along the length direction of the flow-guiding structure (30), and each of the liquid-cooling bridge bodies (21) extends along the width direction of the flow-guiding structure (30), and each of the liquid-cooling bridge bodies (21) has the liquid-cooling channel (211); A plurality of power tubes (22) are provided on both sides of the width direction of each liquid cooling bridge body (21), and a copper busbar structure (40) is provided on the upper surface of each liquid cooling bridge body (21) on the side facing away from the flow guide structure (30).

7. The motor controller according to claim 6, characterized in that: The movement further comprises a substrate (50), the substrate (50) being arranged on the bridge tube assembly (20), the copper busbar structure (40) being connected to the liquid-cooling bridge body (21) by riveting, and each of the copper busbar structures (40) being provided with a plurality of pins protruding in a direction away from the guide structure (30), each of the pins being used for electrical connection with the substrate (50).

8. A power system, characterized in that: The motor controller comprises a motor and a motor, wherein the motor controller is control-connected to the motor, and the motor controller is the motor controller according to any one of claims 1 to 7.

9. An electric vehicle, characterized in that: It comprises a power system, and the power system is the power system according to claim 8.

Images