Driving power assembly and electric driving system

Abstract

The utility model discloses a driving power assembly and an electric driving system. Wherein the power assembly comprises a driving circuit board, a laminated busbar and a cooling water channel which are sequentially laminated from top to bottom; a power board is fixed on the side surface of the cooling water channel, a plurality of mounting areas which are linearly arranged at intervals along the horizontal direction are arranged on the power board, the mounting areas are used for mounting IGBT power units, so that the IGBT power units are vertically arranged, and pins of the IGBT power units can penetrate through the laminated busbar to be welded and fixed with the driving circuit board. According to the driving power assembly, modularized arrangement of the IGBT power units can be achieved, different numbers of IGBT power units can be arranged according to different power requirements, the overall layout structure does not need to be modified, the operation stability of the driving power assembly is guaranteed, the design efficiency is greatly improved, and the research and development risk and the research and development cost are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor controllers, and in particular relates to a driving power component and an electric driving system. Background Art

[0002] With the rapid development of new energy vehicles, people's requirements for new energy vehicles are constantly increasing, requiring them to meet standards in reliability, safety, energy saving and other aspects at the same time. Mature and stable drive power components are the key prerequisite for the controller to stably drive the motor operation.

[0003] At present, due to the different output power of the electric drive controllers of different new energy vehicle models, different drive power components need to be set up, which requires redesigning the layout architecture of the IGBT power unit, copper bus, cooling water channel and drive circuit board in the drive power component, as well as redesigning the assembly sequence of the production line, thereby increasing R&D costs and risks, and the redesigned drive power component may have the risk of poor operating stability. Utility Model Content

[0004] In view of the above problems, the utility model discloses a driving power component and an electric driving system to overcome the above problems or at least partially solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model discloses a driving power component, comprising a driving circuit board, a stacked busbar and a cooling water channel stacked in sequence from top to bottom;

[0007] A power board is fixed on the side of the cooling water channel, and a plurality of installation locations are arranged in a line in the horizontal direction and spaced apart. The installation locations are used to install IGBT power units so that the IGBT power units are arranged vertically. The pins of the IGBT power units can pass through the stacked busbars and be welded and fixed to the drive circuit board.

[0008] Furthermore, a positioning groove is provided at the installation area on the power board, and the positioning groove is used for positioning the IGBT power unit during installation.

[0009] Furthermore, the number of the cooling water channels is three, the three cooling water channels are arranged in parallel and at intervals, each cooling water channel is independently provided with a water inlet and a water outlet, and the power panels are provided on both sides of each cooling water channel.

[0010] Furthermore, each of the power panels is provided with six installation locations.

[0011] Furthermore, it also includes an insulating bracket;

[0012] The insulating support is arranged below the cooling water channel, and the cooling water channel is fixed to the insulating support by screws or bolts.

[0013] Furthermore, a plurality of first fixing columns and a plurality of second fixing columns are provided on the upper end surface of the insulating bracket, each of the first fixing columns passes through the cooling water channel and is fixedly connected to the stacked busbar, and each of the second fixing columns passes through the cooling water channel and the stacked busbar in turn and is fixedly connected to the driving circuit board.

[0014] Furthermore, a plurality of positioning posts are provided on the upper end surface of the insulating bracket, and positioning holes cooperating with the positioning posts are provided on the stacked busbars and the driving circuit board.

[0015] Furthermore, the insulating bracket is provided with a screw hole structure and / or a buckle structure, and the insulating bracket is fixedly connected to the controller housing through the screw hole structure and / or the buckle structure.

[0016] Furthermore, it also includes a glue-filled cover;

[0017] The potting cover is arranged above the driving circuit board and is used for positioning and shaping the potting glue when the power component is potted.

[0018] Another aspect of the utility model discloses an electric drive system, comprising an electrically connected motor and a motor controller, wherein the motor controller is provided with the above-mentioned drive power component.

[0019] The advantages and beneficial effects of the utility model are:

[0020] In the driving power component of the utility model, by arranging a plurality of installation locations for installing IGBT power units on the power board on the side of the cooling water channel, the IGBT power unit is arranged vertically, and its pins can pass through the stacked busbars and be welded and fixed to the driving circuit board, thereby realizing the modular design of the IGBT power unit. Different numbers of IGBT power units can be arranged according to different power requirements without modifying the overall layout architecture, thereby ensuring the stability of the operation of the driving power component, greatly improving the design efficiency, and reducing the research and development risks and costs; and the driving power component has a compact structure and a higher degree of integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0022] Figure 1 An exploded structural diagram of a driving power component in one embodiment of the utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of a driving power component in one embodiment of the utility model;

[0024] Figure 3 It is a three-dimensional structural diagram of three cooling water channels in one embodiment of the utility model;

[0025] Figure 4 This is a position structure diagram of a cooling water channel, a power board and an IGBT power unit in one embodiment of the utility model;

[0026] Figure 5 It is a front view of a power board in one embodiment of the utility model;

[0027] Figure 6 A three-dimensional structural diagram of a power board with an IGBT power unit installed in another embodiment of the utility model;

[0028] Figure 7 A front view of a power board with an IGBT power unit installed in another embodiment of the utility model;

[0029] Figure 8 It is a three-dimensional structural diagram of an insulating bracket in one embodiment of the utility model.

[0030] In the figure: 1. driver circuit board; 2. stacked busbar; 3. cooling water channel; 4. power board; 5. installation location; 6. IGBT power unit; 7. insulation bracket; 8. first fixing column; 9. second fixing column; 10. positioning column; 11. glue filling cover. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In one embodiment of the present invention, a driving power component is provided, such as Figures 1 to 5 As shown, the driving power component includes a driving circuit board 1, a stacked busbar 2 and a cooling water channel 3 which are stacked in sequence from top to bottom.

[0034] Specifically, a power board 4 is fixed on the side of the cooling water channel 3, that is, the power board 4 is arranged in the vertical direction, and a plurality of installation locations 5 (dashed area) arranged in a line in the horizontal direction and arranged at intervals are provided on the power board 4. The installation locations 5 are used to install the IGBT power unit 6 to realize the modular design of the IGBT power unit 6; wherein, the number of the installation locations 5 is a fixed value and will not change due to the change in the number of IGBT power units 6. The cooling water channel 3 is used to cool the IGBT power unit 6 to make its operation more stable, and the installation locations 5 arranged at intervals reduce interference between the IGBT power units 6. When the IGBT power unit 6 is installed on the installation location 5, the IGBT power unit 6 is arranged vertically, and the pins of the IGBT power unit 6 can pass through the stacked busbar 2 and be welded and fixed to the driver circuit board 1, thereby making the structure more compact and more integrated.

[0035] Therefore, the IGBT power unit 6 can be set according to the power demand. When high power is required, the number of IGBT power units 6 is increased, and the number of IGBT power units 6 is at most the same as the number of installation locations 5; when low power is required, the number of IGBT power units 6 is reduced, so that some installation locations 5 are vacant. In this way, the drive power component does not need to modify the structure and position of the drive circuit board 1, the stacked busbar 2 and the cooling water channel 3 to meet different power requirements and can be applied to controllers of different powers. Moreover, it is only necessary to simulate and verify the structure formed by the array of the drive circuit board 1, the stacked busbar 2, the cooling water channel 3 and the IGBT power unit 6 once, and then increase or decrease the number of IGBT power units 6 according to the power demand, which can ensure that the drive power component can operate stably and reduce the risk of research and development. In addition, drive power components of different powers can be produced and assembled by the same production line, thereby reducing production costs.

[0036] In summary, in the driving power component of the present embodiment, by setting a plurality of installation locations for installing IGBT power units on the power board on the side of the cooling water channel, the IGBT power unit is arranged vertically, and its pins can pass through the stacked busbars and be welded and fixed to the driving circuit board, thereby realizing the modular design of the IGBT power unit. Different numbers of IGBT power units can be set according to different power requirements without modifying the overall layout architecture, thereby ensuring the stability of the operation of the driving power component, greatly improving the design efficiency, and reducing the R&D risks and costs; and the driving power component has a compact structure and a higher degree of integration.

[0037] In this embodiment, a positioning groove (not shown in the figure) is opened at the installation position 5 on the power board 4, and the positioning groove is used to position the IGBT power unit 6 during installation to ensure that the IGBT power unit 6 can be accurately installed, so that the pins of the IGBT power unit 6 can accurately pass through the stacked busbar 2 and be welded and fixed to the drive circuit board 1.

[0038] In addition, if Figure 3 As shown, there are three cooling water channels 3, which are arranged in parallel and at intervals, and each cooling water channel 3 is independently provided with a water inlet and a water outlet, so that the cooling water channels 3 do not affect each other, and both sides of each cooling water channel 3 are provided with a power board 4, which ensures the stable operation of the IGBT power unit 6 on each power board 4. Specifically, the three cooling water channels 3 are arranged in parallel along the length direction, and the power board 4 is arranged on both sides of the cooling water channel 3 along the length direction.

[0039] And, if Figure 5 As shown, each power board 4 is provided with six mounting locations 5, which can not only ensure the power requirements of the conventional motor controller, but also prevent the size of the driving power component from being too large. Figure 4 As shown in FIG. 1 , each of the six mounting locations 5 is equipped with an IGBT power unit 6. In other embodiments, less than six IGBT power units 6 may be installed in the six mounting locations 5. Figure 6 and Figure 7 As shown, according to four IGBT power units 6 , the remaining two mounting locations 5 are in a vacant state.

[0040] In this embodiment, if Figure 1 and Figure 8 As shown, the driving power component further includes an insulating bracket 7 .

[0041] The insulating support 7 is arranged below the cooling water channel 3 , and the cooling water channel 3 is fixed to the insulating support 7 by screws or bolts, so as to support and fix the cooling water channel 3 .

[0042] And, if Figure 8 As shown, a plurality of first fixing columns 8 and a plurality of second fixing columns 9 are provided on the upper end surface of the insulating bracket 7, and the first fixing columns 8 and the second fixing columns 9 are evenly distributed. Each first fixing column 8 passes through the cooling water channel 3 and is fixedly connected to the stacked busbar 2. The stacked busbar 2 can be fixedly connected to the first fixing column 8 by screws or bolts. Each second fixing column 9 passes through the cooling water channel 3 and the stacked busbar 2 in sequence and is fixedly connected to the driving circuit board 1. The driving circuit board 1 can be fixedly connected to the second fixing column 9 by screws or bolts. In this way, by providing the first fixing column 8 and the second fixing column 9, the stacked busbar 2 and the driving circuit board 1 can be supported and fixed, so that the positions of the cooling water channel 3, the stacked busbar 2 and the driving circuit board 1 can be relatively fixed, and the stability of the driving power component structure is ensured.

[0043] In addition, if Figure 8 As shown, a plurality of positioning posts 10 are provided on the upper end surface of the insulating bracket 7, and positioning holes cooperating with the positioning posts 10 are provided on the stacked busbar 2 and the driving circuit board 1, that is, positioning holes are opened on the stacked busbar 2 and the driving circuit board 1, and the positioning posts 10 can pass through the positioning holes on the stacked busbar 2 and the positioning holes on the driving circuit board 1 in sequence to realize the positioning of the stacked busbar 2 and the driving circuit board 1 before installation.

[0044] It should be noted that, in order to enhance the structural strength of the first fixing column 8, the second fixing column 9 and the positioning column 10, reinforcing rib structures may be provided between the first fixing column 8, the second fixing column 9 and the positioning column 10 and the insulation. The insulating bracket 7 may also be provided with reinforcing ribs, reinforcing grooves or reinforcing protrusions to enhance the structural strength of the insulating bracket 7.

[0045] Furthermore, the insulating bracket 7 is provided with a screw hole structure and / or a snap structure, and the insulating bracket 7 is fixedly connected to the controller housing through the screw hole structure and / or the snap structure, so that the driving power component can be firmly connected to the controller housing.

[0046] In addition, if Figure 1 and Figure 2 As shown, the driving power component also includes a glue potting cover 11.

[0047] Specifically, the potting cover 11 is disposed above the driving circuit board 1 and is used to position and shape the potting glue when the driving power component is potted, so that the potting glue can completely seal the driving power component and achieve insulation of the internal structure of the driving power component.

[0048] Another embodiment of the utility model provides an electric drive system, which includes an electrically connected motor and a motor controller, wherein the motor controller is provided with the drive power component in the above embodiment. The electric drive system can adjust the power size by only changing the number of IGBT power units, and has the advantages of low cost, compact structure and good operation stability.

[0049] The above description is only a specific implementation of the present invention. Under the above teaching of the present invention, those skilled in the art can make other improvements or modifications based on the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the purpose of the present invention, and the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A driving power component, characterized in that: It includes a driving circuit board, a stacked busbar and a cooling water channel which are stacked in sequence from top to bottom; A power board is fixed on the side of the cooling water channel, and a plurality of installation locations are arranged in a line in the horizontal direction and spaced apart. The installation locations are used to install IGBT power units so that the IGBT power units are arranged vertically. The pins of the IGBT power units can pass through the stacked busbars and be welded and fixed to the drive circuit board.

2. The driving power component according to claim 1, characterized in that: A positioning groove is provided at the installation area on the power board, and the positioning groove is used for positioning the IGBT power unit during installation.

3. The driving power component according to claim 1, characterized in that: The number of the cooling water channels is three, the three cooling water channels are arranged in parallel and at intervals, each cooling water channel is independently provided with a water inlet and a water outlet, and the power panels are arranged on both sides of each cooling water channel.

4. The driving power component according to claim 3, characterized in that: Each of the power boards is provided with six installation locations.

5. The driving power component according to claim 1, characterized in that: Also included is an insulating bracket; The insulating support is arranged below the cooling water channel, and the cooling water channel is fixed to the insulating support by screws or bolts.

6. The driving power component according to claim 5, characterized in that: A plurality of first fixing columns and a plurality of second fixing columns are provided on the upper end surface of the insulating bracket, each of the first fixing columns passes through the cooling water channel and is fixedly connected to the stacked busbar, and each of the second fixing columns passes through the cooling water channel and the stacked busbar in turn and is fixedly connected to the driving circuit board.

7. The driving power assembly according to claim 5, characterized in that: A plurality of positioning posts are arranged on the upper end surface of the insulating bracket, and positioning holes cooperating with the positioning posts are arranged on the stacked busbars and the driving circuit board.

8. The driving power assembly according to claim 7, characterized in that: The insulating bracket is provided with a screw hole structure and / or a buckle structure, and the insulating bracket is fixedly connected to the controller housing through the screw hole structure and / or the buckle structure.

9. The driving power assembly according to any one of claims 1 to 8, characterized in that: Also includes glue filling cover; The potting cover is arranged above the driving circuit board and is used for positioning and shaping the potting glue when the power component is potted.

10. An electric drive system, characterized in that: The invention comprises an electrically connected motor and a motor controller, wherein the motor controller is provided with a driving power component as claimed in any one of claims 1 to 9.

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