Parallel water channel structure for motor controller
By using a parallel water channel structure and direct capacitor cooling, the space limitations and high costs of water channel cooling solutions in motor controllers are solved, thereby improving heat dissipation efficiency and reducing manufacturing costs.
Patent Information
- Application Number
- CN202423149342.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Existing water cooling solutions for motor controllers suffer from limitations in space layout, complex processes, high costs, and low heat dissipation efficiency. In particular, the small heat dissipation area between the capacitor and the casing, which requires contact through copper heat dissipation busbars, results in insufficient heat dissipation capacity.
The parallel water channel structure integrates the inlet and outlet water pipes into the housing, allowing the capacitor to directly contact the housing for heat dissipation, eliminating the need for heat dissipation copper busbars. The use of end face sealing and radial sealing reduces the design difficulty of the sealing ring, simplifies the process, and reduces costs.
It achieves higher heat dissipation efficiency and space utilization, reduces manufacturing costs, simplifies process complexity, and improves the overall performance of the motor controller.
Smart Images
Figure CN223652570U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of water channel heat dissipation technology, specifically relating to a parallel water channel structure for a motor controller. Background Technology
[0002] To meet the heat dissipation requirements of the motor controller power module, existing solutions generally use a series water channel to flow through the power module for cooling. For other modules requiring heat dissipation, such as capacitors and filters, indirect heat dissipation is achieved by placing them close to the housing or by leading heat dissipation copper busbars to the water channel. Specific structures are as follows: Figure 1 and Figure 2 As shown:
[0003] Water flows from inlet 1 through side channel 2, across heat dissipation surface 3, and capacitor 5 is connected to heat dissipation surface 3 via heat dissipation copper busbar 4 for cooling. Water then flows through channel 6 and water pipe 7 into power card 8, circulates within the power card 8's channels, and exits through outlet pipe 9. Side channels 2 and 6 are sealed by channel cover plate 10 and sealing ring 11. Power card 8 is sealed to inlet pipe 7 and outlet pipe 9 by lip seal ring 12.
[0004] Current water cooling solutions mostly employ a series water channel configuration, which significantly restricts the space required for the cooling modules. The inlet pipe needs to connect water channels 2 and 6, as well as the internal water channel of power card 8, resulting in complex manufacturing processes and high costs. The main housing requires a lateral water channel, and the mold requires a separate lateral slider, which is also complex and costly. The capacitors and housing are cooled through heat dissipation copper busbars, which are not in direct contact and have a small heat dissipation area, resulting in insufficient heat dissipation capacity. This will greatly limit the power output of the motor controller, preventing it from reaching its full performance. The heat dissipation copper busbars will further increase the cost and space requirements of the solution. To eliminate the problem of poor coaxiality between the power card and the housing water inlet, a double-sided double-lip sealing ring is used. This sealing ring is difficult to manufacture and has high costs.
[0005] Therefore, further improvements will be made to address the aforementioned issues. Utility Model Content
[0006] The main objective of this invention is to provide a parallel water channel structure for a motor controller. Through a novel parallel water channel arrangement, it simultaneously meets the heat dissipation requirements of power cards and capacitors with height differences. The inlet and outlet water pipes and parallel water channels are integrated into the housing, saving on components such as inlet and outlet water pipes, water channel sealing rings, water pipe sealing rings, and corresponding fixing bolts, thus reducing costs. The main housing only requires upper and lower molding, eliminating the need for additional sliders, reducing the manufacturing difficulty and cost of the main housing. The capacitors are in direct contact with the main housing, resulting in a large heat dissipation area and high heat dissipation efficiency, while eliminating the need for heat dissipation copper busbars, saving costs. The power card and housing are sealed using a combination of end-face and radial sealing, reducing manufacturing difficulty, improving reliability, and offering significant cost advantages.
[0007] To achieve the above objectives, this utility model provides a parallel water channel structure for a motor controller, including a housing and a first sealing module, a second sealing module, a power module water channel, and a capacitor water channel located within the housing, wherein:
[0008] The housing includes an inlet unit and an outlet unit, wherein:
[0009] The water inlet unit includes a main water inlet pipe, a vertical water inlet channel, and a horizontal water inlet channel. The upper end of the vertical water inlet channel is connected to the main water inlet pipe, and the lower end of the vertical water inlet channel is connected to the horizontal water inlet channel. One end of the horizontal water inlet channel is connected to the inlet of the capacitor channel.
[0010] The water outlet unit includes a main water outlet pipe, a vertical water outlet channel, and a horizontal water outlet channel. The upper end of the vertical water outlet channel is connected to the main water outlet pipe, and the lower end of the vertical water outlet channel is connected to the horizontal water outlet channel. One end of the horizontal water outlet channel is connected to the outlet of the capacitor channel.
[0011] The first sealing module is connected between the main water inlet pipe and the water inlet of the power module water channel, and the second sealing module is connected between the main water outlet pipe and the water outlet of the power module water channel. Both the first sealing module and the second sealing module are provided with a sealing pipe, a first sealing ring, a second sealing ring and a third sealing ring. The first sealing ring and the second sealing ring are installed at the first end of the sealing pipe and the third sealing ring is installed at the second end of the sealing pipe.
[0012] As a further preferred technical solution of the above technical solution, the first end of the sealing tube of the first sealing module is connected to the water inlet of the power module water channel through the first sealing ring and the second sealing ring, and the second end of the sealing tube of the first sealing module is connected to the main water inlet pipe through the third sealing ring.
[0013] The first end of the sealing tube of the second sealing module is connected to the outlet of the power module water channel through a first sealing ring and a second sealing ring, and the second end of the sealing tube of the second sealing module is connected to the main outlet pipe through a third sealing ring.
[0014] As a further preferred embodiment of the above technical solution, the housing is further provided with a first plug and a second plug. The first plug is installed at the end of the horizontal water inlet channel away from the capacitor channel, and the second plug is installed at the end of the horizontal water outlet channel away from the capacitor channel.
[0015] As a further preferred embodiment of the above technical solution, the capacitor water channel is integrally formed with the shell.
[0016] As a further preferred embodiment of the above technical solution, the first cover plate covers the capacitor water channel, and the second cover plate covers both the horizontal water inlet channel and the horizontal water outlet channel. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the existing waterway structure.
[0018] Figure 2 This is a schematic diagram of the existing waterway structure.
[0019] Figure 3 This is a schematic diagram of the structure of this utility model.
[0020] Figure 4 This is a schematic diagram of the structure of this utility model.
[0021] Figure 5 This is a schematic diagram of the structure of this utility model (the first and second cover plates are hidden).
[0022] Figure 6 This is a cross-sectional view of the present invention.
[0023] Figure 7 This is a cross-sectional view of the present invention.
[0024] Figure 8 This is a structural schematic diagram of the first / second sealing module of this utility model.
[0025] Figure 9 This is a structural schematic diagram of the first / second sealing module of this utility model.
[0026] The reference numerals in the attached drawings include: 100, housing; 110, water inlet unit; 111, main water inlet pipe; 112, vertical water inlet channel; 113, horizontal water inlet channel; 114, first plug; 120, water outlet unit; 121, main water outlet pipe; 122, vertical water outlet channel; 123, horizontal water outlet channel; 124, second plug; 130, first cover plate; 140, second cover plate; 200, first sealing module; 210, sealing pipe; 220, first sealing ring; 230, second sealing ring; 240, third sealing ring; 300, second sealing module; 400, power module channel; 500, capacitor channel. Detailed Implementation
[0027] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.
[0028] This utility model discloses a parallel waterway structure for a motor controller. The specific embodiments of the utility model are further described below with reference to preferred embodiments.
[0029] In the embodiments of this utility model, those skilled in the art will note that the motor controller and the like involved in this utility model can be considered as prior art.
[0030] Preferred embodiment.
[0031] like Figure 3-9 As shown, this utility model provides a parallel water channel structure for a motor controller, including a housing 100 and a first sealing module 200, a second sealing module 300, a power module water channel 400, and a capacitor water channel 500 located in the housing 100, wherein:
[0032] The housing 100 includes a water inlet unit 110 and a water outlet unit 120, wherein:
[0033] The water inlet unit 110 includes a main water inlet pipe 111, a vertical water inlet channel 112, and a horizontal water inlet channel 113. The upper end of the vertical water inlet channel 112 is connected to the main water inlet pipe 111, and the lower end of the vertical water inlet channel 112 is connected to the horizontal water inlet channel 113. One end of the horizontal water inlet channel 113 is connected to the water inlet of the capacitor channel 500.
[0034] The water outlet unit 120 includes a main water outlet pipe 121, a vertical water outlet channel 122, and a horizontal water outlet channel 123. The upper end of the vertical water outlet channel 122 is connected to the main water outlet pipe 121, and the lower end of the vertical water outlet channel 122 is connected to the horizontal water outlet channel 123. One end of the horizontal water outlet channel 123 is connected to the outlet of the capacitor channel 500.
[0035] The first sealing module 200 is connected between the main water inlet pipe 111 and the water inlet of the power module water channel 400, and the second sealing module 300 is connected between the main water outlet pipe 121 and the water outlet of the power module water channel 400. Both the first sealing module 200 and the second sealing module 300 are provided with a sealing pipe 210, a first sealing ring 220, a second sealing ring 230 and a third sealing ring 240. The first sealing ring 220 and the second sealing ring 230 are installed at the first end of the sealing pipe 210 and the third sealing ring 240 is installed at the second end of the sealing pipe 210.
[0036] Specifically, the first end of the sealing tube of the first sealing module 200 is connected to the inlet of the power module water channel 400 through the first sealing ring and the second sealing ring, and the second end of the sealing tube of the first sealing module 200 is connected to the main water inlet pipe 111 through the third sealing ring.
[0037] The first end of the sealing tube of the second sealing module 300 is connected to the outlet of the power module water channel 400 through the first sealing ring and the second sealing ring, and the second end of the sealing tube of the second sealing module 300 is connected to the main outlet pipe 121 through the third sealing ring.
[0038] The housing and the power card (power module water channel) are sealed by a sealing ring of the sealing module, with an end face seal between the housing and a radial seal between the housing and the power card.
[0039] More specifically, the housing 100 is also provided with a first plug 114 and a second plug 124. The first plug 114 is installed at one end of the horizontal water inlet channel 113 away from the water inlet of the capacitor channel 500, and the second plug 124 is installed at one end of the horizontal water outlet channel 123 away from the water outlet of the capacitor channel 500.
[0040] Furthermore, the capacitor channel 500 is integrally formed with the housing 100.
[0041] Furthermore, the first cover plate 130 covers the capacitor water channel 500, and the second cover plate 140 covers both the horizontal water inlet channel 113 and the horizontal water outlet channel 123.
[0042] Regarding this utility model:
[0043] When water cooling is applied to the motor controller, the cooling water enters from the main inlet pipe, then enters the sealing pipe of the first sealing module and then enters the power module water channel to dissipate heat from the power card. The (parallel) auxiliary cooling water enters the capacitor water channel through the vertical and horizontal inlet water channels to dissipate heat from the capacitor.
[0044] For water output, the cooling water in the main circuit comes out from the outlet of the power module water channel, then passes through the sealing pipe of the second sealing module and exits from the main outlet pipe. The cooling water in the auxiliary circuit comes out from the outlet of the capacitor water channel, then passes through the horizontal outlet water channel and the vertical outlet water channel in sequence and exits from the outlet pipe.
[0045] The beneficial effects of this utility model are as follows:
[0046] 1. By integrating the main inlet and outlet water pipes into the shell to form a three-way parallel structure, a higher degree of integration is achieved, the manufacturing difficulty of the main shell is reduced, and the cost is reduced;
[0047] 2. The auxiliary water channel directly introduces cooling water into the bottom of the capacitor, allowing the capacitor to directly contact the water channel for heat dissipation. This eliminates the need for copper heat dissipation busbars, improving heat dissipation efficiency by 50%, while also reducing costs and saving space.
[0048] 3. After the auxiliary waterway is sealed by friction stir welding (i.e., the first cover plate and the second cover plate are welded and sealed), a capacitor can be potted in the upper part, further saving space in the height direction;
[0049] 4. The main and auxiliary water channels can be combined to meet the heat dissipation needs of multiple modules with different heights.
[0050] 5. If the housing and power card adopt an end face seal plus radial seal method, it can meet the situation where the coaxiality of the power card and housing water inlet is poor. This method can greatly reduce the design difficulty of the sealing ring and save costs.
[0051] It is worth mentioning that the technical features such as the motor controller involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control methods and spatial arrangement of these technical features can be adopted by conventional choices in the field, and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated in detail.
[0052] For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A parallel waterway structure for a motor controller, characterized in that, Includes a housing and a first sealing module, a second sealing module, a power module water channel, and a capacitor water channel located within the housing, wherein: The housing includes an inlet unit and an outlet unit, wherein: The water inlet unit includes a main water inlet pipe, a vertical water inlet channel, and a horizontal water inlet channel. The upper end of the vertical water inlet channel is connected to the main water inlet pipe, and the lower end of the vertical water inlet channel is connected to the horizontal water inlet channel. One end of the horizontal water inlet channel is connected to the inlet of the capacitor channel. The water outlet unit includes a main water outlet pipe, a vertical water outlet channel, and a horizontal water outlet channel. The upper end of the vertical water outlet channel is connected to the main water outlet pipe, and the lower end of the vertical water outlet channel is connected to the horizontal water outlet channel. One end of the horizontal water outlet channel is connected to the outlet of the capacitor channel. The first sealing module is connected between the main water inlet pipe and the water inlet of the power module water channel, and the second sealing module is connected between the main water outlet pipe and the water outlet of the power module water channel. Both the first sealing module and the second sealing module are provided with a sealing pipe, a first sealing ring, a second sealing ring and a third sealing ring. The first sealing ring and the second sealing ring are installed at the first end of the sealing pipe and the third sealing ring is installed at the second end of the sealing pipe.
2. The parallel waterway structure for a motor controller according to claim 1, characterized in that, The first end of the sealing tube of the first sealing module is connected to the inlet of the water channel of the power module through a first sealing ring and a second sealing ring, and the second end of the sealing tube of the first sealing module is connected to the main water inlet pipe through a third sealing ring. The first end of the sealing tube of the second sealing module is connected to the outlet of the power module water channel through a first sealing ring and a second sealing ring, and the second end of the sealing tube of the second sealing module is connected to the main outlet pipe through a third sealing ring.
3. The parallel waterway structure for a motor controller according to claim 1, characterized in that, The housing is also provided with a first plug and a second plug. The first plug is installed at the end of the horizontal water inlet channel away from the capacitor channel, and the second plug is installed at the end of the horizontal water outlet channel away from the capacitor channel.
4. The parallel waterway structure for a motor controller according to claim 1, characterized in that, The capacitor water channel is integrally formed with the shell.
5. A parallel waterway structure for a motor controller according to claim 4, characterized in that, The first cover plate covers the capacitor water channel, and the second cover plate covers both the horizontal water inlet channel and the horizontal water outlet channel.