Power brick water channel structure, motor controller and vehicle

Abstract

The utility model discloses a power brick water channel structure, a motor controller and a vehicle. The power brick water channel structure comprises an IGBT module, a water channel separator plate and a liquid cooling plate. Grooves are formed in the upper surface and the lower surface of the liquid cooling plate, the water channel partition plate is arranged in any groove, and a cooling flow channel is formed between the water channel partition plate and the groove; the IGBT modules are integrated on the upper surface and the lower surface of the liquid cooling plate, and cooling flow channels are formed between the IGBT modules and the water channel partition plates or the grooves, so that at least three folding type cooling flow channels which are sequentially connected in series are arranged in the liquid cooling plate in the vertical direction. The IGBT module has the advantages of being compact in structure, convenient to disassemble and assemble, high in cooling efficiency and the like, the flow path of cooling liquid in the most concentrated heat dissipation area of the IGBT module is lengthened through the folding cooling flow channels, heat is fully absorbed and taken away, and the heat dissipation effect is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle motor controller technology, specifically to a power brick waterway structure, a motor controller, and a vehicle. Background Technology

[0002] With the development of new energy vehicles, high power and miniaturization are gradually becoming the mainstream trends, thus placing increasingly higher demands on the power density of drive motors and controllers. High integration of internal components in motor controllers is becoming a trend, with the integration of core components being referred to as "power bricks." Power bricks need to minimize their overall size and improve their utilization rate. However, high power density and small size also bring challenges in heat dissipation. Furthermore, dual-controller products are common in the motor controller market; however, to accommodate the heat dissipation channel layout, IGBT modules are often laid out along the long side of the plane, severely limiting the layout of dual-controller products. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a power brick water channel structure, motor controller and vehicle that are compact, easy to assemble and disassemble and have high cooling efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A power brick water channel structure includes: an IGBT module, a water channel baffle, and a liquid cooling plate; the upper and lower surfaces of the liquid cooling plate are provided with grooves, the water channel baffle is disposed in any one of the grooves, and a cooling flow channel is formed between the baffle and the groove; the IGBT module is integrated on the upper and lower surfaces of the liquid cooling plate, and a cooling flow channel is formed between the module and the baffle or the groove, so that at least three folded cooling flow channels connected in series in the vertical direction are provided inside the liquid cooling plate.

[0006] As a further improvement of this utility model, the upper surface of the liquid cooling plate is provided with an upper groove, the lower surface of the liquid cooling plate is provided with a lower groove, the water channel baffle is disposed in the upper groove, and a middle layer flow channel is formed between the water channel baffle and the upper groove.

[0007] As a further improvement of this utility model, the IGBT module includes a first IGBT module and a second IGBT module with the same structure. The first IGBT module is integrated in the upper groove, and an upper flow channel is formed between the first IGBT module and the water channel baffle. The second IGBT module is integrated in the lower groove, and a lower flow channel is formed between the second IGBT module and the lower groove. One end of the middle flow channel is connected in series with the upper flow channel, and the other end of the middle flow channel is connected in series with the lower flow channel.

[0008] As a further improvement of this utility model, the liquid cooling plate is provided with an inlet and an outlet on opposite sides, the inlet being connected to the lower flow channel and the outlet being connected to the upper flow channel.

[0009] As a further improvement of this utility model, the inner side of the upper groove is provided with a stepped surface, and the waterway partition is disposed on the stepped surface.

[0010] As a further improvement of this utility model, the waterway partition is welded or glued to the step surface.

[0011] As a further improvement of this utility model, a sealing ring is provided at the connection between the IGBT module and the liquid cooling plate.

[0012] As a further improvement of this utility model, the side of the liquid cooling plate is provided with an extension edge, which is used to place the copper busbar assembly.

[0013] As a general technical concept, this utility model also provides a motor controller, including the power brick waterway structure described above.

[0014] As a general technical concept, this utility model also provides a vehicle including the aforementioned motor controller.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] This invention relates to a power brick water channel structure, a motor controller, and a vehicle. By creating grooves on both the upper and lower surfaces of a liquid-cooled plate and installing water channel baffles within these grooves to form cooling channels, and then integrating IGBT modules onto these surfaces, cooling channels are also formed between the IGBT modules and the water channel baffles or grooves. This results in at least three sequentially connected folded cooling channels along the vertical direction within the liquid-cooled plate. These folded channels lengthen the flow path of the coolant in the area where heat dissipation is most concentrated in the IGBT modules, facilitating the coolant's absorption and removal of heat, thus achieving better heat dissipation and more effectively controlling the temperature of high-power dual-controller systems, thereby increasing the integration density of the power brick. Furthermore, by stacking two IGBT modules on the upper and lower surfaces of the liquid-cooled plate, the conventional method of laying them flat along the long side of the IGBTs in dual-controller systems is changed, improving space utilization and making it applicable to a wider range of electronic control products. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the explosive structure principle of the power brick waterway structure in a specific embodiment of this utility model;

[0018] Figure 2 This is a three-dimensional structural principle diagram of the power brick waterway structure in a specific embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the main structural principle of the waterway baffle and liquid cooling plate in a specific embodiment of this utility model;

[0020] Figure 4 This is a cross-sectional view of the power brick waterway structure in a specific embodiment of this utility model;

[0021] Legend: 1. IGBT module; 11. First IGBT module; 12. Second IGBT module; 2. Sealing ring; 3. Water channel baffle; 4. Liquid cooling plate; 41. Upper groove; 42. Stepped surface; 43. Extended edge; 44. Lower groove; 45. Upper flow channel; 46. Middle flow channel; 47. Lower flow channel; 48. Liquid inlet; 49. Liquid outlet. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0023] In the description of this utility model, it should be understood that the terms "side", "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] 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. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0025] Example

[0026] like Figure 1 , Figure 2 and Figure 4As shown, the power brick water channel structure of this utility model includes: an IGBT module 1, a water channel baffle 3, and a liquid cooling plate 4. The upper and lower surfaces of the liquid cooling plate 4 are both provided with grooves. The water channel baffle 3 is disposed within any one of the grooves, forming a cooling flow channel between itself and the groove. The IGBT module 1 is integrated into the upper and lower surfaces of the liquid cooling plate 4, forming a cooling flow channel between itself and the water channel baffle 3 or the groove, thereby achieving at least three sequentially connected folded cooling flow channels within the liquid cooling plate 4 along the vertical direction.

[0027] In this embodiment, grooves are provided on both the upper and lower surfaces of the liquid cooling plate 4, and water channel baffles 3 are set in the grooves to form cooling channels. IGBT modules 1 are then integrated onto the upper and lower surfaces of the liquid cooling plate 4. Cooling channels are also formed between the IGBT modules 1 and the water channel baffles 3 or grooves. Ultimately, at least three sequentially connected folded cooling channels are formed vertically inside the liquid cooling plate 4. These folded cooling channels lengthen the flow path of the coolant in the area where heat dissipation is most concentrated in the IGBT module 1, facilitating the coolant's full absorption and removal of heat, thus achieving better heat dissipation and more effectively controlling the temperature of the high-power dual-controller, thereby increasing the integration density of the power block. Simultaneously, by stacking two IGBT modules 1 on the upper and lower surfaces of the liquid cooling plate 4, the conventional method of laying dual-controllers flat along the long side of the IGBT is changed, improving space utilization and making it applicable to a wider range of electronic control products.

[0028] like Figure 3 and Figure 4 As shown, the upper surface of the liquid cooling plate 4 is provided with an upper groove 41, and the lower surface of the liquid cooling plate 4 is provided with a lower groove 44. The water channel baffle 3 is disposed in the upper groove 41, and a middle layer flow channel 46 is formed between the water channel baffle 3 and the upper groove 41.

[0029] like Figure 4 As shown, the IGBT module 1 includes a first IGBT module 11 and a second IGBT module 12 with identical structures. The first IGBT module 11 is integrated into the upper recess 41, and a sealing ring 2 is provided at the connection between the first IGBT module 11 and the upper recess 41 for sealing. An upper flow channel 45 is formed between the first IGBT module 11 and the water channel baffle 3, which not only achieves stable installation of the first IGBT module 11, but also increases the heat dissipation area of ​​the first IGBT module 11. The second IGBT module 12 is integrated into the lower recess 44, and a sealing ring 2 is provided at the connection between the second IGBT module 12 and the lower recess 44 for sealing. A lower flow channel 47 is formed between the second IGBT module 12 and the lower recess 44, which not only achieves stable installation of the second IGBT module 12, but also increases the heat dissipation area of ​​the second IGBT module 12. One end of the middle flow channel 46 is connected in series with the upper flow channel 45, and the other end of the middle flow channel 46 is connected in series with the lower flow channel 47.

[0030] like Figure 4 As shown, the liquid cooling plate 4 has an inlet 48 and an outlet 49 on opposite sides. The inlet 48 is connected to the lower flow channel 47, and the outlet 49 is connected to the upper flow channel 45.

[0031] like Figure 3 As shown, the inner side of the upper groove 41 is provided with a stepped surface 42, and the water channel baffle 3 is disposed on the stepped surface 42, so that a middle-layer flow channel 46 is formed between the water channel baffle 3 and the bottom of the upper groove 41. Furthermore, the water channel baffle 3 and the stepped surface 42 are fixed by welding, resulting in a simple structure and a firm connection. Figure 4 As shown, the length of the water channel baffle 3 is slightly shorter than the dimension of the stepped surface 42. A connection port is formed at the liquid outlet end of the middle layer flow channel 46, realizing the series connection between the middle layer flow channel 46 and the upper layer flow channel 45; a connection port is also provided at the liquid inlet end of the middle layer flow channel 46, realizing the series connection between the middle layer flow channel 46 and the lower layer flow channel 47, ultimately forming a three-dimensional series water channel, which is beneficial to improving the efficiency of coolant use and can effectively control the overall volume of the power brick. In other embodiments, the water channel baffle 3 and the stepped surface 42 can also be fixed by adhesive bonding.

[0032] like Figure 4 As shown, the coolant flows into the lower flow channel 47 from the inlet 48 on the right side of the liquid cooling plate 4. The coolant flows from the right side of the lower flow channel 47 to the left side, continuously absorbing heat from the second IGBT module 12 during this flow. The coolant then flows upwards from the connection port on the left side of the lower flow channel 47 into the left side of the middle flow channel 46. Within the middle flow channel 46, the coolant flows from left to right, and then flows upwards from the connection port on the right side of the middle flow channel 46 into the upper flow channel 45. Within the upper flow channel 45, the coolant flows from right to left, continuously absorbing heat from the first IGBT module 11 during this flow. Finally, the coolant is discharged from the liquid cooling plate 4 from the outlet 49 on the left side of the upper flow channel 45. The coolant flows in a folded manner between the lower flow channel 47, the middle flow channel 46, and the upper flow channel 45, resulting in a longer flow path, which is more conducive to sufficient heat dissipation and improves the cooling effect of the first IGBT module 11 and the second IGBT module 12.

[0033] like Figure 3 As shown, the liquid cooling plate 4 has an extension edge 43 on its side, which can be used to place the copper busbar assembly, facilitating the connection between the copper busbar assembly and the IGBT module 1. This avoids the risk of poor stability due to the copper busbar assembly being suspended in the air, which could lead to wobbling and poor contact during the assembly process. In other embodiments, to improve the integration of the power brick, a capacitor assembly can also be placed on the side of the liquid cooling plate 4, and the capacitor can be connected to the IGBT module 1 via an AC terminal.

[0034] It is understood that in other embodiments, only one IGBT module 1 can be installed on one surface of the liquid cooling plate 4, and the other surface of the liquid cooling plate 4 can be enclosed with corresponding objects to obtain the corresponding cooling flow channel, thereby realizing the single electronic control function.

[0035] In this embodiment, a dual-motor controller is also provided, including the aforementioned power brick channel structure. The power brick channel structure is directly installed inside the electrical control box to form the motor controller. Depending on the actual control requirements, if two IGBT modules 1 are set in the power brick channel structure, a dual-motor controller can be formed; if only one IGBT module 1 is set, it is a single-motor controller.

[0036] In this embodiment, a vehicle is also provided, including the above-mentioned motor controller, which can control one motor or control two motors simultaneously.

[0037] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A power brick waterway structure, characterized by, The application relates to a power brick water channel structure. The upper surface of the liquid cooling plate (4) is provided with an upper groove (41), and the lower surface of the liquid cooling plate (4) is provided with a lower groove (44); the water channel partition plate (3) is arranged in the upper groove (41), and a middle layer flow channel (46) is formed between the water channel partition plate (3) and the upper groove (41).

2. The power brick waterway structure of claim 1, wherein, The IGBT module (1) comprises a first IGBT module (11) and a second IGBT module (12) which are identical in structure; the first IGBT module (11) is integrated in the upper groove (41), and an upper layer flow channel (45) is formed between the first IGBT module (11) and the water channel partition plate (3); the second IGBT module (12) is integrated in the lower groove (44), and a lower layer flow channel (47) is formed between the second IGBT module (12) and the lower groove (44); one end of the middle layer flow channel (46) is connected with the upper layer flow channel (45) in series, and the other end of the middle layer flow channel (46) is connected with the lower layer flow channel (47) in series.

3. The power brick waterway structure of claim 2, wherein, The liquid cooling plate (4) is provided with an inlet (48) and an outlet (49) at opposite sides, respectively; the inlet (48) is communicated with the lower layer flow channel (47), and the outlet (49) is communicated with the upper layer flow channel (45).

4. The power brick waterway structure of claim 3, wherein, The inner side of the upper groove (41) is provided with a stepped surface (42), and the water channel partition plate (3) is arranged on the stepped surface (42).

5. The power brick waterway structure of claim 2, wherein, The water channel partition plate (3) is welded or glued to the stepped surface (42).

6. The power brick waterway structure of claim 5, wherein, The connection between the IGBT module (1) and the liquid cooling plate (4) is provided with a sealing ring (2).

7. The power brick waterway structure of any one of claims 1 to 6, wherein, The side of the liquid cooling plate (4) is provided with an extension edge (43) for placing a copper bar assembly.

8. The power brick waterway structure of any one of claims 1 to 6, wherein, The application further relates to a motor controller comprising the power brick water channel structure.

9. An electric machine controller characterized by The application further relates to a motor controller comprising the power brick water channel structure.

10. A vehicle characterized by comprising: ​

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