An electrically controlled housing, motor controller and vehicle

Abstract

The application discloses an electric control shell, a motor controller and a vehicle, which comprises a shell part and a shell frame part, a cavity is arranged in the shell part, the shell frame part is connected with the shell part, the shell frame part is located in the cavity and separates the cavity into a power tube mounting cavity, a capacitor mounting cavity, a power tube cooling cavity and a capacitor cooling cavity, the power tube mounting cavity is used for mounting a power tube, the capacitor mounting cavity is used for mounting a capacitor, the power tube mounting cavity and the capacitor mounting cavity are arranged along the width direction of the shell part, the power tube cooling cavity is stacked below the power tube mounting cavity along the height direction of the shell part, and the capacitor cooling cavity is stacked below the capacitor mounting cavity along the height direction of the shell part; the power tube cooling cavity is communicated with the power tube mounting cavity, and the power tube mounting cavity is communicated with the capacitor cooling cavity. According to the technical scheme, the capacitor assembly and the power tube can be cooled by the cooling liquid at the same time.

Description

Technical Field

[0001] This application relates to the field of motor controller technology, specifically to an electrical control housing, a motor controller, and a vehicle. Background Technology

[0002] Existing motor controllers only use forced water cooling for the power transistors, and the heat is mainly carried away by the coolant. The bottom of the film capacitor is coated with a layer of thermal grease and contacts the casing for heat dissipation. This results in low cooling efficiency, low structural utilization, large weight, many parts, and complex assembly process for the film capacitor. Utility Model Content

[0003] In view of the above problems, this application provides an electronic control housing, a motor controller, and a vehicle that can simultaneously cool capacitor components and power transistors with coolant.

[0004] According to one aspect of an embodiment of this application, an electronic control housing is provided, comprising: an outer shell portion and a frame portion, wherein the outer shell portion has a cavity, the frame portion is connected to the outer shell portion, the frame portion is located within the cavity, and divides the cavity into mutually independent power transistor mounting cavity, capacitor mounting cavity, power transistor cooling cavity, and capacitor cooling cavity, the power transistor mounting cavity being used to mount a power transistor, the capacitor mounting cavity being used to mount a capacitor, the power transistor mounting cavity and the capacitor mounting cavity being arranged along the width direction of the outer shell portion, the power transistor cooling cavity being stacked below the power transistor mounting cavity along the height direction of the outer shell portion, and the capacitor cooling cavity being stacked below the capacitor mounting cavity along the height direction of the outer shell portion; the power transistor cooling cavity is in communication with the power transistor mounting cavity, and the power transistor mounting cavity is in communication with the capacitor cooling cavity.

[0005] In one optional exemplary embodiment, the housing portion is provided with a plurality of first connecting holes, the plurality of first connecting holes being spaced apart from each other, one end of the first connecting hole being connected to the power tube cooling cavity, and the other end being connected to the power tube mounting cavity.

[0006] In one optional exemplary embodiment, the housing portion is provided with a plurality of second connecting holes, one end of which is connected to the power tube mounting cavity and the other end of which is connected to the capacitor cooling cavity. The plurality of second connecting holes are arranged at intervals from each other and the intervals are the same.

[0007] In one optional exemplary embodiment, the first connecting hole and the second connecting hole are spaced apart along the width direction of the housing portion, and the spacing distance is d; the width of the power tube mounting cavity is D; wherein, d > 30%D.

[0008] In one optional exemplary embodiment, the flow guiding structure includes two flow guiding plates, which are spaced apart within the capacitor cooling cavity and have a curved structure.

[0009] In an optional exemplary embodiment, the electronic control housing further includes a flow guiding structure located within the capacitor cooling cavity, which divides the capacitor cooling cavity into three cooling channels. One end of each cooling channel is connected to the second connecting hole, and the other end is connected to the water outlet of the outer casing.

[0010] In one optional exemplary embodiment, along the height direction of the housing portion: the orthographic projection of the capacitor cooling cavity onto the housing portion overlaps with the orthographic projection of the power tube mounting cavity onto the housing portion.

[0011] In one optional exemplary embodiment, the outer casing includes a cover plate and a main casing, the cavity is disposed in the main casing, the cover plate is connected to the outer casing and the frame portion, and the cover plate, the outer casing and the frame portion together form the power tube cooling cavity and the capacitor cooling cavity.

[0012] According to another aspect of the embodiments of this application, a motor controller is provided, including a capacitor assembly, a power transistor assembly, and the aforementioned control housing, wherein the capacitor assembly is installed in the capacitor mounting cavity, and the power transistor assembly is installed in the power transistor mounting cavity.

[0013] According to another aspect of the embodiments of this application, a vehicle is provided, including an electric motor and the aforementioned motor controller, wherein the motor controller is electrically connected to the electric motor. In this application, when the power transistor is installed in the power transistor mounting cavity and the capacitor is installed in the capacitor mounting cavity, and the power transistor is cooled by coolant flowing through the power transistor cooling cavity, the coolant can pass through the power transistor mounting cavity, and after cooling the power transistor, enter the capacitor cooling cavity below the capacitor mounting cavity, thereby cooling the capacitor inside the capacitor mounting cavity. Therefore, the electronic control housing can simultaneously cool the capacitor assembly and the power transistor through coolant.

[0014] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0015] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1A schematic diagram of the internal structure of the motor controller provided in this application is shown.

[0016] Figure 2 A schematic diagram of the internal partial structure of the motor controller provided in this application is shown.

[0017] Figure 3 A schematic diagram of the main housing and frame of the motor controller provided in this application is shown.

[0018] Figure 4 This application provides Figure 1 A structural schematic diagram of the motor controller from another perspective.

[0019] Icon labels: 11. Electrical control housing; 111. Outer shell; 1111. Cover plate; 1112. Main shell; 112. Frame; 101. Power transistor mounting cavity; 102. Capacitor mounting cavity; 103. Power transistor cooling cavity; 104. Capacitor cooling cavity; 105. First connecting hole; 106. Second connecting hole; 113. Guide plate; 12. Capacitor assembly; 121. Film capacitor; 122. Copper busbar; 13. Power transistor; L1. Water inlet pipe; L2. Water outlet pipe. Detailed Implementation

[0020] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0021] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0022] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0023] In this application, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0024] Combination Figures 1 to 4 As shown, this embodiment provides an electronic control housing 11 that can simultaneously cool the capacitor assembly 12 and the power transistor 13 with coolant.

[0025] Combination Figures 1 to 4 As shown, the electronic control housing 11 includes an outer shell portion 111 and a frame portion 112. The outer shell portion 111 has a cavity inside. The frame portion 112 is connected to the outer shell portion 111 and is located inside the cavity. The frame portion 112 divides the cavity into an independent power transistor mounting cavity 101, a capacitor mounting cavity 102, a power transistor cooling cavity 103, and a capacitor cooling cavity 104.

[0026] For example, the outer shell 111 and the frame 112 are an integral structure. The outer shell 111 is a hollow frame structure. After the frame 112 is disposed in the frame structure, it divides the cavity of the outer shell 111 into four independent cavities, namely the power tube mounting cavity 101, the capacitor mounting cavity 102, the power tube cooling cavity 103, and the capacitor cooling cavity 104.

[0027] Combination Figures 1 to 4 As shown, the power transistor mounting cavity 101 is used to mount the power transistor 13, and the capacitor mounting cavity 102 is used to mount the capacitor. The power transistor mounting cavity 101 and the capacitor mounting cavity 102 are arranged along the width direction of the outer shell portion 111. The power transistor cooling cavity 103 is stacked below the power transistor mounting cavity 101 along the height direction of the outer shell portion 111, and the capacitor cooling cavity 104 is stacked below the capacitor mounting cavity 102 along the height direction of the outer shell portion 111. The power transistor cooling cavity 103 is connected to the power transistor mounting cavity 101, and the power transistor mounting cavity 101 is connected to the capacitor cooling cavity 104.

[0028] For example, power transistor 13 is an insulated gate bipolar transistor (IGBT).

[0029] In this invention, when the power transistor 13 is installed in the power transistor mounting cavity 101 and the capacitor is installed in the capacitor mounting cavity 102, and the power transistor 13 is cooled by coolant flowing through the power transistor cooling cavity 103, the coolant can pass through the power transistor mounting cavity 101, and after cooling the power transistor 13, enter the capacitor cooling cavity 104 below the capacitor mounting cavity 102, thereby cooling the capacitor inside the capacitor mounting cavity 102. Therefore, the electronic control housing 11 can simultaneously cool the capacitor 12 assembly and the power transistor 13 with coolant.

[0030] In this embodiment, the frame portion 112 is also provided with an inlet pipe L1 and an outlet pipe L2. The inlet pipe L1 is connected to the power tube cooling chamber 103 to allow coolant to enter the power tube cooling chamber 103. The outlet pipe L2 is connected to the capacitor cooling chamber 104 to discharge coolant.

[0031] Combination Figures 1 to 4 As shown, the frame portion 112 is provided with a plurality of first connecting holes 105. One end of the first connecting hole 105 is connected to the power tube cooling chamber 103, and the other end is connected to the power tube mounting chamber 101, so that the coolant can quickly enter the power tube cooling chamber 103 from the power tube mounting chamber 101.

[0032] For example, the first connecting hole 105 is a long strip hole, and there are three of them.

[0033] Furthermore, multiple first connecting holes 105 are spaced apart from each other with the same spacing, thereby ensuring that the coolant flows evenly into the power tube mounting cavity 101, so that the power tube 13 is heated evenly, avoiding local overheating and improving cooling efficiency and reliability.

[0034] Combination Figures 1 to 4 As shown, the frame portion 112 is provided with a plurality of second connecting holes 106. One end of each second connecting hole 106 is connected to the power tube mounting cavity 101, and the other end is connected to the capacitor cooling cavity 104. The plurality of second connecting holes 106 are arranged at intervals with the same spacing, thereby enabling the coolant to flow smoothly from the power tube mounting cavity 101 into the capacitor cooling cavity 104, ensuring uniform capacitor cooling and improving overall cooling performance. Combination Figures 1 to 4 As shown, the first connecting hole 105 and the second connecting hole 106 are spaced apart along the width direction of the outer casing 111, and the spacing is d; the width of the power tube mounting cavity 101 is D; wherein, d > 30%D, thereby ensuring that the coolant has sufficient flow path (flowing along the width direction of the outer casing 111) and residence time in the power tube mounting cavity 101, so as to fully cool the power tube 13 before entering the capacitor cooling cavity 104, and avoid insufficient cooling of the power tube 13.

[0035] Combination Figures 1 to 4As shown, a plurality of second connecting holes 106 are spaced apart along the length of the outer casing 111 and the spacing is equal, thereby making the coolant evenly distributed to each part of the capacitor cooling chamber 104, improving the uniformity and efficiency of capacitor cooling.

[0036] Combination Figures 1 to 4 As shown, the electronic control housing 11 also includes a flow guiding structure located inside the capacitor cooling cavity 104, which divides the capacitor cooling cavity 104 into three cooling channels. One end of each cooling channel is connected to the second connecting hole 106, and the other end is connected to the outlet of the outer casing 111, thereby allowing the coolant to fully pass through every part of the cavity. For example, the flow guiding structure includes two curved flow guiding plates 113, which divide the capacitor cooling cavity 104 into three cooling channels.

[0037] Combination Figures 1 to 4 As shown, along the height direction of the outer casing 111, the orthographic projection of the capacitor cooling cavity 104 on the outer casing 111 overlaps with the orthographic projection of the power transistor mounting cavity 101 on the outer casing 111, thereby allowing the coolant in the power transistor mounting cavity 101 to fall vertically downward into the capacitor cooling cavity 104 by gravity.

[0038] Combination Figures 1 to 4 As shown, the outer shell 111 includes a cover plate 1111 and a main shell 1112. A cavity is provided in the main shell 1112. The cover plate 1111 is connected to the outer shell 111 and the frame 112. The cover plate 1111, the outer shell 111 and the frame 112 together enclose the power tube cooling cavity 103 and the capacitor cooling cavity 104.

[0039] For example, the main housing 1112 is the bottom and side wall structure of the electronic control housing 11, and the cavity is located inside the main housing 1112. The cover plate 1111 is bolted to the main housing 1112 and the frame 112, and together with the main housing 1112 and the frame 112, it encloses the power tube cooling cavity 103 and the capacitor cooling cavity 104. The cover plate 1111 facilitates the opening of the power tube cooling cavity 103 and the capacitor cooling cavity 104 to clean the inside of the power tube cooling cavity 103 and the capacitor cooling cavity 104.

[0040] In this embodiment, there are two cover plates 1111, which respectively cover the power tube cooling cavity 103 and the capacitor cooling cavity 104.

[0041] This application embodiment also provides a motor controller, including a capacitor assembly 12, a power transistor assembly 13, and the electronic control housing 11 described above. The capacitor assembly 12 is installed in the capacitor mounting cavity 102, and the power transistor assembly 13 is installed in the power transistor mounting cavity 101.

[0042] For example, the capacitor assembly 12 includes a film capacitor 121 and a copper busbar 122 connected to the film capacitor 121.

[0043] In summary, in this invention, when the power transistor is installed in the power transistor mounting cavity and the capacitor is installed in the capacitor mounting cavity, and the power transistor is cooled by coolant flowing through the power transistor cooling cavity, the coolant can pass through the power transistor mounting cavity and, after cooling the power transistor, enter the capacitor cooling cavity below the capacitor mounting cavity, thereby cooling the capacitor inside the capacitor mounting cavity. Therefore, the electronic control housing can simultaneously cool the capacitor assembly 12 and the power transistor through coolant.

[0044] This embodiment also provides a vehicle, including a motor and a motor controller as described in the above embodiment, wherein the motor controller is electrically connected to the motor for controlling the motor.

[0045] For other aspects of the vehicle's structure, please refer to existing technology; details will not be elaborated here.

[0046] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified. The terms "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application.

[0048] The illustrative expressions of the terms used above do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction.

[0049] Although embodiments of this application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of the patent coverage of this application.

Claims

1. An electronically controlled housing, characterized in that, include: The outer casing has a cavity inside; The frame portion is connected to the outer shell portion. The frame portion is located within the cavity and divides the cavity into independent power transistor mounting chambers, capacitor mounting chambers, power transistor cooling chambers, and capacitor cooling chambers. The power transistor mounting chambers are used to mount power transistors, and the capacitor mounting chambers are used to mount capacitors. The power transistor mounting chambers and the capacitor mounting chambers are arranged along the width direction of the outer shell portion. The power transistor cooling chambers are stacked below the power transistor mounting chambers along the height direction of the outer shell portion, and the capacitor cooling chambers are stacked below the capacitor mounting chambers along the height direction of the outer shell portion. The power transistor cooling cavity is connected to the power transistor mounting cavity, and the power transistor mounting cavity is connected to the capacitor cooling cavity.

2. The electronic control housing according to claim 1, characterized in that, The frame portion is provided with a plurality of first connecting holes, one end of which is connected to the power tube cooling cavity, and the other end of which is connected to the power tube mounting cavity; Multiple first connecting holes are spaced apart from each other, and the spacing between them is the same.

3. The electronic control housing according to claim 2, characterized in that, The frame portion is provided with a plurality of second connecting holes, one end of which is connected to the power tube mounting cavity, and the other end of which is connected to the capacitor cooling cavity; Multiple second connecting holes are spaced apart from each other, and the spacing between them is the same.

4. The electronic control housing according to claim 3, characterized in that, The first connecting hole and the second connecting hole are spaced apart along the width direction of the outer casing, and the spacing distance is d; The width of the power transistor mounting cavity is D; Among them, d > 30%D.

5. The electronic control housing according to claim 3, characterized in that, The electronic control housing also includes a flow guiding structure located inside the capacitor cooling cavity, which divides the capacitor cooling cavity into three cooling channels. One end of each cooling channel is connected to the second connecting hole, and the other end is connected to the water outlet of the outer shell.

6. The electronic control housing according to claim 5, characterized in that, The flow guiding structure includes two flow guiding plates, which are spaced apart within the capacitor cooling cavity and have a curved structure.

7. The electronic control housing according to claim 1, characterized in that, Along the height direction of the housing portion: the orthographic projection of the capacitor cooling cavity onto the housing portion overlaps with the orthographic projection of the power tube mounting cavity onto the housing portion.

8. The electronic control housing according to claim 1, characterized in that, The outer casing includes a cover plate and a main casing. The cavity is located in the main casing. The cover plate is connected to the outer casing and the frame. The cover plate, the outer casing, and the frame together form the power tube cooling cavity and the capacitor cooling cavity.

9. A motor controller, characterized in that, It includes a capacitor assembly, a power transistor assembly, and an electronic control housing as described in any one of claims 1-8, wherein the capacitor assembly is installed in the capacitor mounting cavity, and the power transistor assembly is installed in the power transistor mounting cavity.

10. A vehicle, characterized in that, It includes a motor and a motor controller as described in claim 9, wherein the motor controller is electrically connected to the motor.

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