Power assembly integrated with water channel and motor controller
By integrating the power components of the waterway in the motor controller, the problems of large space occupation, high cost and low heat dissipation efficiency in traditional designs are solved, and more efficient heat dissipation and electromagnetic compatibility performance is achieved, reducing production costs.
Patent Information
- Application Number
- CN202420080399.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-12
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-01-12
AI Technical Summary
The independent design of power modules, water channels, capacitors and other components in traditional motor controllers leads to large space occupation, high cost, low heat dissipation efficiency, and insufficient electromagnetic compatibility performance.
Design a power component that integrates waterways. The capacitor module and the waterway are directly integrated into the housing. The power module covers the above waterways. The capacitor module and the power module are electrically connected through copper strips. A shielding plate is installed to isolate electromagnetic interference. The drive plate and the control plate are integrated. The cooling waterway is integrated into the housing to reduce material use and connections.
It reduces cost and volume, improves heat dissipation effect and electromagnetic compatibility, reduces space consumption in the vertical direction, and improves production efficiency.
Smart Images
Figure CN222263209U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motor controllers, in particular to a power component and a motor controller of an integrated waterway. Background Art
[0002] With the rapid development of new energy vehicle motor controllers, new energy motor controllers are increasingly integrated and miniaturized. Motor controllers are mainly composed of power module components, capacitors, shells and other parts. As the core parts inside the controller, the integration method of power module components determines the overall cost, structure, heat dissipation efficiency, etc. of the controller. In order to miniaturize, reduce costs and improve production efficiency, some manufacturers will modularize the power components composed of power modules, water channels, capacitors and other parts. Traditional power module components generally have the following characteristics: capacitors are independent installation parts and need to be encapsulated in plastic shells; the water channel is connected to the shell through a seal and transferred through the water channel on the shell; the capacitor needs fasteners to be fixed on the water channel or shell; the capacitor, water channel, and power module are stacked, occupying a large vertical space; the driver board and control board of the power module are arranged in partitions, occupying a large space. Utility Model Content
[0003] In order to overcome the above technical defects, the purpose of the utility model is to provide a power component and a motor controller with integrated capacitor.
[0004] The utility model discloses a power component with integrated water channel, comprising a housing, a capacitor module, a power module, a shielding plate, and a control and driving plate;
[0005] The housing is provided with a capacitor limiting area and a water tank adjacent to each other, the capacitor module is arranged in the capacitor limiting area, the power module is arranged above the water tank and covers the water tank in the vertical direction, so that the capacitor module and the power module are adjacent to each other in the horizontal direction, a copper busbar is arranged on the capacitor module near the power module, and the capacitor module and the power module are electrically connected through the copper busbar;
[0006] A water inlet and a water outlet are respectively extended from both ends of the water tank, the water inlet and the water outlet are opposite to each other and are respectively connected to the outside of the shell, and a cooling water channel is formed along the water inlet, the water tank and the water outlet;
[0007] The control and drive board covers the power module and the capacitor module, the power module and the control and drive board are electrically connected, and a shielding plate is provided between the capacitor module and the control and drive board to isolate electromagnetic interference between the capacitor module and the control and drive board.
[0008] Preferably, at least one shielding plate fixing threaded column is arranged inside the shell along the outer edge of the capacitor limiting area, and at least one shielding plate fixing screw penetrates the shielding plate and is inserted into the at least one shielding plate fixing threaded column to fix the shielding plate inside the shell.
[0009] Preferably, at least one insulating limiting column is arranged in the capacitor limiting area, and through holes which overlap with the at least one limiting column in the vertical direction are respectively opened on the capacitor module, the shielding plate and the control and driving plate, and the at least one limiting column passes through the capacitor module, the shielding plate and the control and driving plate in sequence, so that the capacitor module, the shielding plate and the control and driving plate are relatively fixed.
[0010] Preferably, an external interface is provided on the side surface of the housing near the capacitor module, and an external terminal is provided on the capacitor module, and the external terminal extends into the external interface along the horizontal direction;
[0011] A notch is formed inwardly on the control and drive board near the external terminal, so that the external terminal is exposed outside the control and drive board through the notch in a vertical direction.
[0012] Preferably, a shielding dome with a trapezoidal structure is formed on the shielding plate near the external terminal, and the shielding dome extends into the notch along the vertical direction to isolate electromagnetic interference between the external terminal and the control and driving board.
[0013] Preferably, a sealing groove is provided along the outer edge of the water tank and circumferentially matches the bottom of the power module. A sealing member is arranged in the sealing groove. The thickness of the sealing member is greater than the height of the sealing groove, so that when the power module is in contact with the water tank, the sealing member undergoes elastic deformation, thereby forming a seal between the power module and the water tank.
[0014] Preferably, a plurality of heat dissipation columns are protruding downward from the bottom of the power module, and the plurality of heat dissipation columns extend into the water tank along a vertical direction.
[0015] Preferably, the water inlet is connected to the outside of the shell through a water inlet, and the inner diameter of the water inlet gradually increases along the water inlet toward the cooling water channel.
[0016] The utility model also discloses a motor controller, which comprises the power component with integrated water channel as mentioned above.
[0017] After adopting the above technical solution, compared with the prior art, it has the following beneficial effects: the capacitor module and the water channel are directly integrated on the power component, which reduces the material and fastener connection of the traditional shell, saves the use of materials, reduces costs and effectively improves production efficiency, effectively improves the heat dissipation effect and reduces the volume of the capacitor. The capacitor module and the power module form a flat design, and the drive board and the control board are integrated, which effectively reduces the space occupied by the power component in the vertical direction and saves the volume of the motor controller. A shielding plate is set between the capacitor module and the control and drive boards, which effectively improves the EMC (Electro Magnetic Compatibility) performance of the power component and the motor controller using the power component. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a three-dimensional assembly schematic diagram of a power component of the utility model;
[0019] Figure 2 It is a three-dimensional assembly diagram of a housing and a capacitor module in a power component of the utility model;
[0020] Figure 3 This is a schematic diagram of the structure of a housing and a capacitor module in a power component of the utility model;
[0021] Figure 4 It is a top view schematic diagram of a housing and a capacitor module in a power component of the utility model;
[0022] Figure 5 This is a schematic diagram of the overall structure of a power component of the utility model;
[0023] Figure 6 It is a cross-sectional schematic diagram of a power component of the utility model;
[0024] Figure markings: 1-shell; 11-capacitor limiting area; 12-water tank; 13-external interface; 121-water inlet; 122-water outlet; 2-capacitor module; 21-external terminal; 3-power module; 31-heat dissipation column; 4-control and drive board; 41-notch; 5-copper busbar; 6-shielding plate; 61-shielding plate fixing threaded column; 62-shielding plate fixing screw; 63-shielding arch; 7-limiting column; 8-sealing groove; 9-seal. DETAILED DESCRIPTION
[0025] The advantages of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.
[0026] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.
[0027] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0028] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".
[0029] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0030] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.
[0031] In the following description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and they themselves have no specific meaning. Therefore, "module" and "component" can be used interchangeably.
[0032] like Figures 1 to 6 As shown, the utility model discloses a power component with integrated water channel, including a housing 1, a capacitor module 2, a power module 3, a shielding plate 6 and a control and driving plate 4.
[0033] The housing 1 is provided with an adjacent capacitor limiting area 11 and a water tank 12, the capacitor module 2 is arranged in the capacitor limiting area 11, the power module 3 is arranged above the water tank 12 and covers the water tank 12 in the vertical direction, so that the capacitor module 2 and the power module 3 are adjacent in the horizontal direction, and a copper bus 5 is arranged on the capacitor module 2 near the power module 3, and the capacitor module 2 and the power module 3 are electrically connected through the copper bus 5.
[0034] The capacitor module 2 uses an integrated potted capacitor to seal and fix the capacitor core, thereby improving the stability of the capacitor module 2 during use. The power module 3 usually uses an IGBT (Insulated Gate Bipolar Transistor) module, or it can be a module or circuit composed of other electrical components that achieve the same function.
[0035] A water inlet 121 and a water outlet 122 are respectively extended from both ends of the water tank 12 . The water inlet 121 and the water outlet 122 are opposite to each other and are respectively connected to the outside of the shell 1 . A cooling water channel is formed along the water inlet 121 , the water tank 12 and the water outlet 122 .
[0036] Specifically, the water inlet 121 and the water outlet 122 can be used to connect an external water inlet device and a water outlet device, respectively, so that the cooling liquid flows in the cooling water channel, and the power module 3 covered on the water tank 12 can transfer heat to the cooling liquid in the cooling water channel, thereby achieving heat dissipation of the power module 3. The cooling water channel in the utility model is integrated on the housing of the power component and can be integrally formed without additional welding, thereby reducing the use of materials and connectors in the power component.
[0037] The control and drive board 4 covers the power module 3 and the capacitor module 2, and the power module 3 is electrically connected to the control and drive board 4. A shielding plate 6 is provided between the capacitor module 2 and the control and drive board 4 to isolate the electromagnetic interference between the capacitor module 2 and the control and drive board 4.
[0038] Specifically, in the utility model, the capacitor module 2 and the power module 3 are horizontally laid out in the shell 1, and a cooling water channel is provided at the bottom of the power module 3, so that the capacitor module 2, the power module 3 and the cooling water channel can be integrated into the shell 1, thereby reducing the space occupied by different modules stacked in the vertical direction.
[0039] Furthermore, for the capacitor module 2 and the power module 3 arranged in a flat pattern, the drive board and the control board respectively connected to the capacitor module 2 and the power module 3 in the prior art can be integrated into a control and drive board 4, such as Figure 1 and Figure 5 As shown, the control and drive board 4 is directly arranged above the capacitor module 2 and the power module 3, which can save the setting of connectors and further reduce the space occupied by the power components and the material cost.
[0040] Furthermore, since the control and driving board 4 in the utility model is directly arranged above the capacitor module 2 and the power module 3, as shown in FIG. Figure 1 As shown, a shielding plate 6 is further provided between the capacitor module 2 and the control and drive board 4. The shielding plate 6 is made of an electromagnetic shielding material. It is used to isolate the electromagnetic interference between the capacitor module 2 and the control and drive board 4, and can effectively improve the EMC (Electro Magnetic Compatibility) performance of the power component and the motor controller using the power component.
[0041] In an optional embodiment, if Figure 1 As shown, at least one shielding plate fixing threaded column 61 is arranged along the outer edge of the capacitor limiting area 11 in the shell 1, and at least one shielding plate fixing screw 62 penetrates the shielding plate 6 and is inserted into the at least one shielding plate fixing threaded column 61 to fix the shielding plate 6 in the shell 1.
[0042] In an optional embodiment, if Figures 1 to 5 As shown, at least one insulating limiting column 7 is provided in the capacitor limiting area, and through holes that overlap with the at least one limiting column 7 in the vertical direction are respectively provided on the capacitor module 2, the shielding plate 6 and the control and drive plate 4. The at least one limiting column 7 passes through the capacitor module 2, the shielding plate 6 and the control and drive plate 4 in sequence, so that the capacitor module 2, the shielding plate 6 and the control and drive plate 4 are relatively fixed. For further information, see Figure 5 In the assembled power assembly, the limiting column 7 is partially exposed above the control and drive board 4, limiting the movement of the control and drive board 4 in the housing 1.
[0043] Preferably, a plurality of limit columns of different heights may be provided, and through holes which overlap with the limit columns of different heights in the vertical direction may be respectively opened on the capacitor module 2, the shielding plate 6, and the control and drive plate 4, so that the limit columns of different heights pass through different components. For example, some limit columns may pass through the capacitor module 2 and the shielding plate 6 in sequence, and some limit columns may pass through the capacitor module 2, the shielding plate 6, and the control and drive plate 4 in sequence, so that the capacitor module 2, the shielding plate 6, and the control and drive plate 4 may be relatively fixed by limit columns of various heights, thereby further enhancing the stability of the above components in the power assembly.
[0044] In an optional embodiment, if Figures 1 to 5 As shown, an external interface 13 is provided on the side of the housing 1 near the capacitor module 2, and an external terminal 21 is provided on the capacitor module 2. The external terminal 21 extends into the external interface 13 along the horizontal direction;
[0045] A notch 41 is formed on the control and drive board 4 near the external terminal 21 , so that the external terminal 21 is exposed outside the control and drive board 4 through the notch 41 in a vertical direction.
[0046] Further, such as Figure 1 and Figure 5 As shown, a shielding dome 63 of a trapezoidal structure is formed on the shielding plate 6 near the external terminal 21 , and the shielding dome 63 extends into the notch 41 along the vertical direction to isolate the electromagnetic interference between the external terminal 21 and the control and driving board 4 .
[0047] In an optional embodiment, if Figures 1 to 4 As shown, a sealing groove 8 is opened along the outer edge of the water tank 12 and circumferentially matched with the bottom of the power module 3. A sealing member 9 is arranged in the sealing groove 8. The thickness of the sealing member 9 is greater than the height of the sealing groove 8, so that when the power module 3 is fitted with the water tank 12, the sealing member 9 produces elastic deformation, and the sealing member 9 fills the gap between the power module 3 and the water tank 12, so that a seal is formed between the power module 3 and the water tank 12.
[0048] In an optional embodiment, if Figure 6 As shown, a plurality of heat dissipation columns 31 are protruding downward from the bottom of the power module 3 , and the plurality of heat dissipation columns 31 extend into the water tank 12 along the vertical direction.
[0049] Specifically, the plurality of heat dissipation columns 31 may be evenly or unevenly distributed, and may also be arranged to form curved water channels through which cooling water passes. The heat dissipation columns 31 extend into the cooling water channel, further transferring the heat of the power module 3 to the cooling liquid in the cooling water channel, thereby improving the heat dissipation effect on the power module.
[0050] In an optional embodiment, if Figure 6 As shown, the water inlet 121 is connected to the outside of the shell through a water inlet, and the inner diameter of the water inlet 121 gradually increases along the water inlet toward the cooling water channel.
[0051] Specifically, the water inlet 121 and the water outlet 122 can be set to be approximately fan-shaped or triangular to adjust the state of cooling water flowing in or out, thereby increasing the heat dissipation efficiency. In the present embodiment, the water inlet 121 gradually increases along the water inlet toward the inner diameter of the cooling water channel, so that in the process of the cooling liquid entering the water inlet along the water inlet 121 and entering the cooling water channel, the water pressure gradually decreases, the cooling liquid has a lower flow rate in the cooling water channel, and remains in the cooling channel for a longer time, which can achieve a better heat dissipation effect.
[0052] The utility model also discloses a motor controller, which is characterized by comprising the power component with integrated water channel as mentioned above.
[0053] After adopting the above technical solution, compared with the prior art, it has the following beneficial effects: the capacitor module and the water channel are directly integrated on the power component, reducing the material and fastener connection of the traditional shell, eliminating the use of materials, reducing costs and effectively improving production efficiency, effectively improving the heat dissipation effect while reducing the capacitor volume. The capacitor module and the power module form a flat design, and the drive board and the control board are integrated, which effectively reduces the space occupied by the power component in the vertical direction and saves the volume of the motor controller. A shielding plate is set between the capacitor module and the control and drive board, which effectively improves the EMC performance of the power component and the motor controller.
[0054] It should be noted that the embodiments of the present invention have better practicability and do not impose any form of limitation on the present invention. Any technician familiar with the field may use the technical content disclosed above to change or modify it into an equivalent effective embodiment. However, any modification or equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A power module with integrated water channel, characterized in that: It includes a housing, a capacitor module, a power module, a shielding plate, and a control and drive board; The housing is provided with a capacitor limiting area and a water tank adjacent to each other, the capacitor module is arranged in the capacitor limiting area, the power module is arranged above the water tank and covers the water tank in the vertical direction, so that the capacitor module and the power module are adjacent to each other in the horizontal direction, a copper busbar is arranged on the capacitor module near the power module, and the capacitor module and the power module are electrically connected through the copper busbar; A water inlet and a water outlet are respectively extended from both ends of the water tank, the water inlet and the water outlet are opposite to each other and are respectively connected to the outside of the shell, and a cooling water channel is formed along the water inlet, the water tank and the water outlet; The control and drive board covers the power module and the capacitor module, the power module and the control and drive board are electrically connected, and a shielding plate is provided between the capacitor module and the control and drive board to isolate electromagnetic interference between the capacitor module and the control and drive board.
2. The power component according to claim 1, characterized in that: At least one shielding plate fixing threaded column is arranged in the shell along the outer edge of the capacitor limiting area, and at least one shielding plate fixing screw penetrates the shielding plate and is inserted into the at least one shielding plate fixing threaded column to fix the shielding plate in the shell.
3. The power assembly according to claim 1, characterized in that: At least one insulating limiting column is arranged in the capacitor limiting area, and through holes which overlap with the at least one limiting column in the vertical direction are respectively opened on the capacitor module, the shielding plate and the control and driving plate. The at least one limiting column passes through the capacitor module, the shielding plate and the control and driving plate in sequence, so that the capacitor module, the shielding plate and the control and driving plate are relatively fixed.
4. The power assembly according to claim 1, characterized in that: An external interface is provided on the side surface of the housing near the capacitor module, and an external terminal is provided on the capacitor module, and the external terminal extends into the external interface along a horizontal direction; A notch is formed inwardly on the control and drive board near the external terminal, so that the external terminal is exposed outside the control and drive board through the notch in a vertical direction.
5. The power assembly according to claim 4, characterized in that: A shielding dome with a trapezoidal structure is formed on the shielding plate near the external terminal, and the shielding dome extends into the notch along a vertical direction to isolate electromagnetic interference between the external terminal and the control and driving board.
6. The power assembly according to claim 1, characterized in that: A sealing groove is provided along the outer edge of the water tank and circumferentially matches the bottom of the power module. A sealing member is provided in the sealing groove. The thickness of the sealing member is greater than the height of the sealing groove, so that when the power module is in contact with the water tank, the sealing member undergoes elastic deformation, thereby forming a seal between the power module and the water tank.
7. The power assembly according to claim 1, characterized in that: A plurality of heat dissipation columns are protruding downward from the bottom of the power module, and the plurality of heat dissipation columns extend into the water tank along a vertical direction.
8. The power assembly according to claim 1, characterized in that: The water inlet is connected to the outside of the shell through a water inlet, and the inner diameter of the water inlet gradually increases along the water inlet toward the cooling water channel.
9. A motor controller, characterized in that: A power component comprising the integrated water channel as described in any one of claims 1 to 8.