Highly integrated electric driving mechanism

Abstract

The utility model discloses a highly integrated electric driving mechanism which comprises a motor, a speed reducer and a controller, a shaft of the motor is connected with the speed reducer, and the controller is located above the speed reducer and the shaft. The controller comprises a controller housing, a power supply assembly, a PDU assembly, a thin-film capacitor, a controller IGBT assembly and a three-phase fixing seat assembly. The controller shell comprises an upper cover plate, a middle shell and a lower cover plate which are sequentially fixed from top to bottom, and the middle shell is fixedly connected with a shell of the motor; a first partition plate is horizontally fixed in the middle shell and divides the interior of the middle shell into an upper cavity and a lower cavity; the power supply assembly and the PDU assembly are fixed in the upper cavity; the thin-film capacitor, the controller IGBT assembly and the three-phase fixing seat assembly are all fixed in the lower cavity. According to the electric driving mechanism, the controller is integrally arranged above the shaft and the speed reducer, the space above the output shaft of the speed reducer can be fully utilized, and the Z-direction height of the whole electric driving mechanism is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle power system technology, and in particular to a highly integrated electric drive mechanism. Background Technology

[0002] Currently, the common all-in-one solution for electric vehicles on the market is to lay the motor controller, power assembly, and PDU flat in one housing, and then place the whole unit on top of the motor and reducer. This takes up a lot of space in the Z direction, which is not conducive to the layout of small cars. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model proposes a highly integrated electric drive mechanism.

[0004] The present invention proposes a highly integrated electric drive mechanism, including a motor, a reducer and a controller, wherein the motor shaft is connected to the reducer and the controller is located above the shaft and the reducer.

[0005] The controller includes: a controller housing, a power supply assembly, a PDU assembly, a film capacitor, a controller IGBT assembly, and a three-phase mounting bracket assembly;

[0006] The controller housing includes an upper cover plate, a middle housing, and a lower cover plate, which are fixed from top to bottom. The middle housing is fixedly connected to the motor housing. A first partition plate is horizontally fixed inside the middle housing, which divides the interior of the middle housing into an upper cavity and a lower cavity.

[0007] The power supply assembly and PDU assembly are both fixed in the upper cavity; the film capacitor, controller IGBT assembly and three-phase mounting bracket assembly are all fixed in the lower cavity.

[0008] Preferably, a second partition is also vertically provided in the upper cavity, which divides the interior of the upper cavity into a first upper chamber and a second upper chamber, and the height of the top surface of the second partition is lower than the height of the top surface of the middle shell; the power supply assembly is fixed in the first upper chamber and the PDU assembly is fixed in the second upper chamber.

[0009] Preferably, the thin-film capacitor, the controller IGBT assembly, and the three-phase mounting bracket assembly are sequentially fixed in the lower cavity along the horizontal direction from the first upper cavity to the second upper cavity.

[0010] Preferably, the controller IGBT assembly is fixedly connected to the film capacitor and the three-phase mounting bracket assembly, respectively.

[0011] Preferably, it also includes a filter component, which is fixed between the power supply component and the PDU component.

[0012] Preferably, a thermally conductive silicone pad is connected between the film capacitor and the lower cover plate.

[0013] Preferably, the upper cover plate, the middle shell, and the lower cover plate are detachably and fixedly connected in sequence from top to bottom.

[0014] In this invention, the proposed highly integrated electric drive mechanism divides the interior of the middle housing into an upper cavity and a lower cavity through a first partition. The power supply assembly and PDU assembly are placed in the upper cavity, while the thin film capacitor, controller IGBT assembly, and three-phase mounting bracket assembly are all fixed in the lower cavity. The controller is then arranged as a whole above the shaft and the reducer, which can make full use of the space above the output shaft of the reducer and reduce the overall Z-axis height of the electric drive mechanism. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the highly integrated electric drive mechanism in one embodiment of the present invention.

[0016] Figure 2 This is an exploded view of a highly integrated electric drive mechanism in one embodiment of the present invention.

[0017] Figure 3 This is an exploded view of the controller in one embodiment of the present invention.

[0018] Figure 4 This is a top view of the middle shell in one embodiment of the present invention.

[0019] Figure 5 This is a bottom view of the middle shell in one embodiment of the present invention. Detailed Implementation

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Firstly, such as Figure 1-5 As shown, the present invention proposes a highly integrated electric drive mechanism, including a motor 200, a reducer 300 and a controller 100. The shaft of the motor 200 is connected to the reducer 300, and the controller 100 is located above the reducer 300 and the shaft.

[0022] The controller 100 includes: a controller housing, a power supply assembly 104, a PDU assembly 105, a film capacitor 106, a controller IGBT assembly 107, and a three-phase mounting bracket assembly 108.

[0023] The controller housing includes an upper cover plate 101, a middle housing 102, and a lower cover plate 103, which are fixed from top to bottom. The middle housing 102 is fixedly connected to the housing of the motor 200. A first partition plate 109 is horizontally fixed inside the middle housing 102, which divides the interior of the middle housing 102 into an upper cavity and a lower cavity.

[0024] The power supply assembly 104 and the PDU assembly 105 are both fixed in the upper cavity; the thin film capacitor 106, the controller IGBT assembly 107 and the three-phase mounting bracket assembly 108 are all fixed in the lower cavity.

[0025] To address the shortcomings of existing technologies, this invention uses a first partition 109 to divide the interior of the middle housing 102 into an upper cavity and a lower cavity. The power supply assembly 104 and the PDU assembly 105 are placed in the upper cavity, while the thin film capacitor 106, the controller IGBT assembly 107, and the three-phase mounting bracket assembly 108 are all fixed in the lower cavity. The controller 100 is then arranged as a whole above the shaft and the reducer 300, which can make full use of the space above the output shaft of the reducer 300 and reduce the overall Z-axis height of the electric drive mechanism.

[0026] It should be understood that in this embodiment, the Z direction specifically refers to the vertical direction.

[0027] It should be noted that the electrical connections between the power supply assembly 104, PDU assembly 105, film capacitor 106, controller IGBT assembly 107, three-phase mounting bracket assembly 108, and motor 200 are all existing technologies and will not be elaborated here.

[0028] In this embodiment, a second partition 110 is also vertically provided in the upper cavity. The second partition 110 divides the interior of the upper cavity into a first upper chamber and a second upper chamber, and the height of the top surface of the second partition 110 is lower than the height of the top surface of the middle shell 102. The power supply assembly 104 is fixed in the first upper chamber, and the PDU assembly 105 is fixed in the second upper chamber, so as to better fix the power supply assembly 104 and the PDU assembly 105, make the arrangement more neat, and facilitate maintenance.

[0029] In this embodiment, the thin-film capacitor 106, the controller IGBT assembly 107, and the three-phase mounting bracket assembly 108 are sequentially fixed in the lower cavity along the horizontal direction from the first upper cavity to the second upper cavity.

[0030] In this embodiment, the controller IGBT assembly 107 is fixedly connected to the thin film capacitor 106 and the three-phase mounting bracket assembly 108, respectively.

[0031] Specifically, the controller IGBT assembly 107 is detachably fixed to the film capacitor 106 and the three-phase mounting bracket assembly 108, respectively, for example, by screw fixing.

[0032] In this embodiment, a filtering component is also included, which is fixed between the power supply component 104 and the PDU component 105.

[0033] In this embodiment, a thermally conductive silicone pad is connected between the thin-film capacitor 106 and the lower cover plate 103 to facilitate heat dissipation.

[0034] In this embodiment, the upper cover plate 101, the middle shell 102 and the lower cover plate 103 are detachably and fixedly connected from top to bottom to facilitate disassembly, assembly and maintenance.

[0035] Specifically, the upper cover plate 101, the middle shell 102, and the lower cover plate 103 are fixedly connected from top to bottom through screw holes or screws and nuts.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A highly integrated electric drive mechanism, characterized by, It comprises a motor (200), a speed reducer (300) and a controller (100), the shaft of the motor (200) is connected with the speed reducer (300), and the controller (100) is located above the speed reducer (300) and the shaft; The controller (100) comprises a controller shell, a power supply assembly (104), a PDU assembly (105), a film capacitor (106), a controller IGBT assembly (107) and a three-phase fixed seat assembly (108). The controller shell comprises an upper cover plate (101), a middle shell (102) and a lower cover plate (103) fixed in sequence from top to bottom, the middle shell (102) is fixedly connected with the shell of the motor (200); a first partition plate (109) is horizontally fixed in the middle shell (102), and the first partition plate (109) divides the interior of the middle shell (102) into an upper cavity and a lower cavity. The power supply assembly (104) and the PDU assembly (105) are fixed in the upper cavity; the film capacitor (106), the controller IGBT assembly (107) and the three-phase fixed seat assembly (108) are fixed in the lower cavity.

2. The highly integrated electric drive mechanism of claim 1, wherein, A second partition plate (110) is vertically arranged in the upper cavity, the second partition plate (110) divides the interior of the upper cavity into a first upper cavity and a second upper cavity, and the height of the top surface of the second partition plate (110) is lower than that of the top surface of the middle shell (102); the power supply assembly (104) is fixed in the first upper cavity, and the PDU assembly (105) is fixed in the second upper cavity.

3. The highly integrated electric drive mechanism of claim 2, wherein, The film capacitor (106), the controller IGBT assembly (107) and the three-phase fixed seat assembly (108) are fixed in the lower cavity in sequence along the horizontal direction from the first upper cavity to the second upper cavity.

4. The highly integrated electric drive mechanism of claim 1, wherein, The controller IGBT assembly (107) is fixedly connected with the film capacitor (106) and the three-phase fixed seat assembly (108) respectively.

5. The highly integrated electric drive mechanism of claim 1, wherein, It further comprises a filter assembly fixed between the power supply assembly (104) and the PDU assembly (105).

6. The highly integrated electric drive mechanism of claim 1, wherein, The film capacitor (106) and the lower cover plate (103) are connected with a heat-conducting silica gel pad.

7. The highly integrated electric drive mechanism of claim 1, wherein, The upper cover plate (101), the middle shell (102) and the lower cover plate (103) are detachably fixed in sequence from top to bottom.

Images