A motor controller and a cooling water channel

Abstract

This application discloses a motor controller and a heat dissipation channel, belonging to the field of heat dissipation technology. The motor controller includes a housing, a cover plate, a partition plate, power devices, and an energy storage device. The housing has a connected receiving cavity and an opening; the cover plate seals the opening; the partition plate is disposed within the receiving cavity to divide the interior of the receiving cavity into a first water channel layer and a second water channel layer, with the first water channel layer located on the side of the second water channel layer facing the cover plate; the power device is disposed on the cover plate and has heat exchange contact with the first water channel layer; the energy storage device is disposed outside the housing and has heat exchange contact with the second water channel layer. Dividing the receiving cavity into the first and second water channel layers by the partition plate, and adopting a layered design, can accommodate the different heat dissipation requirements of the power device and the energy storage device; at the same time, the power device being disposed on the cover plate and the energy storage device being disposed outside the housing makes the heat distribution among the different devices more reasonable, which helps to achieve better thermal balance among the devices and improves the performance stability of the motor controller.

Description

Technical Field

[0001] This application belongs to the field of heat dissipation technology, specifically relating to a motor controller and a heat dissipation channel. Background Technology

[0002] Motor controllers typically house power devices and energy storage devices. Because these devices have different heat source powers, their heat dissipation requirements vary. Therefore, cooling channels are usually integrated within the motor controller to dissipate heat from the power devices and energy storage devices.

[0003] However, conventional cooling channels cannot meet the heat dissipation requirements of different components. Utility Model Content

[0004] Purpose of the utility model: This application provides a motor controller to overcome the technical problem that current cooling channels cannot meet the heat dissipation requirements of different devices; this application also provides a cooling channel.

[0005] Technical solution: An embodiment of this application discloses a motor controller, comprising:

[0006] A housing having a communicating receiving cavity and an opening;

[0007] Cover plate, the cover plate sealing the opening;

[0008] A partition is disposed within the receiving cavity to divide the interior of the receiving cavity into a first water channel layer and a second water channel layer, wherein the first water channel layer is located on the side of the second water channel layer facing the cover plate;

[0009] A power device is disposed on a cover plate and makes heat exchange contact with the first water channel layer.

[0010] An energy storage device is disposed outside the housing and makes heat exchange contact with the second water channel layer.

[0011] In some embodiments, the housing is provided with a water inlet and a water outlet, the water inlet being connected to the first water channel layer and the water outlet being connected to the second water channel layer;

[0012] The first water channel layer is connected to the second water channel layer on the side away from the water inlet.

[0013] In some embodiments, the power device includes a first power module and a second power module, wherein the output power of the first power module is greater than the output power of the second power module;

[0014] The first power module is arranged close to the water inlet, and the second power module is arranged away from the water inlet relative to the first power module.

[0015] In some embodiments, the second waterway layer includes a first flow channel and a second flow channel, wherein the first flow channel and the second flow channel are arranged in parallel.

[0016] The energy storage device includes a first heat source and a second heat source, wherein the first heat source is in heat exchange contact with the first flow channel and the second heat source is in heat exchange contact with the second flow channel.

[0017] In some embodiments, the motor controller further includes a first seal disposed within the second water channel layer to divide the second water channel layer into a first flow channel and a second flow channel.

[0018] In some embodiments, the second water channel layer is provided with a protrusion, the protrusion is connected to the side of the housing facing the partition and is spaced apart from the partition, the protrusion has a groove on the side facing the partition, the first sealing member is disposed in the groove and sealably connects the partition and the protrusion.

[0019] In some embodiments, the motor controller further includes a second seal disposed within the second water channel layer and located between the housing and the partition, the second seal extending along the edge of the partition and sealingly connecting the partition and the housing.

[0020] In some embodiments, the cover plate is provided with a positioning pin, which connects the cover plate and the partition plate.

[0021] In some embodiments, the motor controller further includes a flow guide disposed within the first waterway layer and connected to at least one of the cover plate and the partition plate;

[0022] The first power module is provided in at least two groups. In one group, the orthographic projection of the first power module on the partition is located on one side of the flow guide, and in the other group, the orthographic projection of the first power module on the partition is located on the other side of the flow guide.

[0023] And / or, the second power module is provided in at least two groups, wherein the orthographic projection of one group of the second power module on the partition is located on one side of the flow guide, and the orthographic projection of the other group of the second power module on the partition is located on the other side of the flow guide.

[0024] In some embodiments, the flow guide includes a plurality of flow guide ribs arranged at intervals.

[0025] This application also discloses a heat dissipation channel, including a housing, the housing having a communicating receiving cavity and an opening;

[0026] Cover plate, the cover plate sealing the opening;

[0027] A partition is disposed within the receiving cavity to divide the interior of the receiving cavity into a first water channel layer and a second water channel layer, wherein the first water channel layer is located on the side of the second water channel layer facing the cover plate.

[0028] In some embodiments, the housing is provided with an inlet and an outlet, the first water channel layer is connected to the inlet, the second water channel layer is connected to the outlet, the inlet and the outlet are located on the same side of the housing, and the first water channel layer is connected to the second water channel layer on the side away from the inlet.

[0029] The motor controller in this embodiment includes a housing, a cover plate, a partition plate, a power device, and an energy storage device. The housing has a connected receiving cavity and an opening; the cover plate seals the opening; the partition plate is disposed within the receiving cavity to divide the interior of the receiving cavity into a first water channel layer and a second water channel layer, with the first water channel layer located on the side of the second water channel layer facing the cover plate; the power device is disposed on the cover plate and makes heat exchange contact with the first water channel layer; the energy storage device is disposed outside the housing and makes heat exchange contact with the second water channel layer. Dividing the receiving cavity into the first and second water channel layers by the partition plate, this layered design can accommodate the different heat dissipation requirements of the power device and the energy storage device. Simultaneously, the power device is disposed on the cover plate above the first water channel layer, and the energy storage device is disposed outside the housing below the second water channel layer. This arrangement makes the heat distribution among the different devices more reasonable, helps to achieve better thermal balance among the devices, avoids the problem of performance degradation due to insufficient heat dissipation capacity of high-power heat source devices, and improves the overall performance stability of the device. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is an exploded view of an electrical device according to an embodiment of this application;

[0032] Figure 2 This is a top view schematic diagram of an electrical device according to an embodiment of this application;

[0033] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0034] Figure 4 for Figure 3A magnified view of a portion of point B in the middle;

[0035] Figure 5 This is a schematic diagram of the connection structure between a cover plate and a flow guide in an electrical device according to an embodiment of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 10. Shell; 100. Receiving cavity; 11. Opening; 20. Cover plate; 201. Heat dissipation fins; 30. Partition plate; 101. First water channel layer; 102. Second water channel layer; 40. Power device; 50. Energy storage device; 12. Inlet; 13. Outlet; 401. First power module; 402. Second power module; 103. First flow channel; 104. Second flow channel; 501. First heat source; 502. Second heat source; 60. First seal; 14. Protrusion; 140. Groove; 70. Second seal; 80. Positioning pin; 90. Flow guide; 901. Flow guide rib. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0039] In the description of this application, it should be understood that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component 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 application. In the description of this application, "multiple" means two or more, and "at least one" can refer to one, two, or more, unless otherwise explicitly specified. The terms "first," "second," and "third," etc., are only for the convenience of description and are used to name parts or embodiments by number, and do not imply any order of importance between the parts or embodiments.

[0040] As a preamble to the embodiments of this application, a motor controller typically houses a power device 40 and an energy storage device 50. Due to the different heat source power of these devices, their heat dissipation requirements vary. Typically, a cooling channel is integrated within the motor controller to dissipate heat from the power device 40 and the energy storage device 50. However, a typical cooling channel cannot meet the heat dissipation requirements of different devices. Failure to consider the thermal balance of devices or heat sources can lead to poor heat dissipation capacity for high-power heat source devices, resulting in insufficient device performance. Furthermore, the cooling channel structure generally employs a cold plate integrated with the power device 40, with heat dissipation fins 201 on the cold plate. These fins dissipate heat in the coolant. This design offers advantages such as high integration and small size. During cold plate assembly, a gap of 0.5mm to 1mm is typically left between the heat dissipation fins 201 and the bottom of the channel for assembly tolerance, preventing the heat dissipation fins 201 from touching the bottom and causing the cooling channel structure to leak. However, the assembly gap between the heat dissipation fins 201 and the bottom of the channel can cause some coolant to flow out without heat exchange with the heat dissipation fins 201, significantly impacting heat exchange efficiency.

[0041] In view of this, embodiments of this application provide a motor controller, which aims to solve at least one of the above-mentioned technical problems.

[0042] Please see Figure 1As shown, the motor controller provided in this application embodiment includes a housing 10, a cover plate 20, a partition plate 30, a power device 40, and an energy storage device 50. The housing 10 has a connected receiving cavity 100 and an opening 11; the cover plate 20 covers the opening 11; the partition plate 30 is disposed in the receiving cavity 100 to divide the interior of the receiving cavity 100 into a first water channel layer 101 and a second water channel layer 102, the first water channel layer 101 being located on the side of the second water channel layer 102 facing the cover plate 20; the power device 40 is disposed on the cover plate 20 and has heat exchange contact with the first water channel layer 101; the energy storage device 50 is disposed outside the housing 10 and has heat exchange contact with the second water channel layer 102. It is important to understand that dividing the accommodating cavity 100 into a first water channel layer 101 and a second water channel layer 102 via the partition 30, this layered design can accommodate the different heat dissipation requirements of the power device 40 and the energy storage device 50. Simultaneously, the power device 40 is positioned on the cover plate 20, above the first water channel layer 101, while the energy storage device 50 is positioned outside the housing 10, below the second water channel layer 102. This arrangement allows for a more rational distribution of heat among the different devices, contributing to better thermal balance and preventing performance degradation due to insufficient heat dissipation in high-power heat source devices, thus improving the overall performance stability of the devices. Furthermore, this layout fully utilizes the spatial structure of the motor controller. On one hand, placing the power device 40 on the cover plate 20 facilitates direct contact with the first water channel layer 101 for efficient heat dissipation; on the other hand, positioning the energy storage device 50 outside the housing 10 and in contact with the second water channel layer 102 reduces the space occupied while ensuring effective heat dissipation. The overall layout of the heat dissipation structure has been optimized, making the structure of the motor controller more compact and reasonable, which is conducive to improving the integration of the motor controller.

[0043] It's also important to understand that the layered water channel design and rational component layout allow the coolant (water) to exchange heat more effectively with the power device 40 and the energy storage device 50. This design makes fuller use of the coolant's heat dissipation capacity, accelerating heat transfer and dissipation, thereby improving the overall heat dissipation efficiency of the motor controller, helping to reduce the operating temperature of the components and extend their lifespan. By meeting the heat dissipation requirements of different components, improving thermal balance, and increasing heat dissipation efficiency, this solution effectively reduces the risk of component failure due to overheating, improves the stability and reliability of the motor controller under various operating conditions, ensures the normal operation of the motor controller, and reduces maintenance and repair costs.

[0044] Please continue reading. Figure 1As shown, in some embodiments, the housing 10 is provided with an inlet 12 and an outlet 13. The inlet 12 is connected to the first water channel layer 101, and the outlet 13 is connected to the second water channel layer 102. The first water channel layer 101 is connected to the second water channel layer 102 on the side away from the inlet 12. It should be understood that the inlet 12 is connected to the first water channel layer 101 so that the coolant can first enter the first water channel layer 101 to dissipate heat from the power device 40 disposed on the cover plate 20. Since the power device 40 is usually a component that generates a lot of heat, dissipating heat from it first can effectively reduce its temperature. Then, the first water channel layer 101 is connected to the second water channel layer 102 on the side away from the inlet 12, and the coolant flows from the first water channel layer 101 into the second water channel layer 102 to dissipate heat from the energy storage device 50 disposed outside the housing 10 and in heat exchange contact with the second water channel layer 102, and finally flows out through the outlet 13 connected to the second water channel layer 102. This creates an orderly cooling circulation path, where the coolant sequentially dissipates heat from different components, making full use of the coolant's heat dissipation capacity and improving overall heat dissipation efficiency.

[0045] When the coolant first enters the inlet 12, its temperature is low. It flows through the first water channel layer 101 to dissipate heat from the power device 40. At this point, the coolant temperature is relatively low, resulting in good heat dissipation. After passing through the first water channel layer 101, the coolant absorbs some heat and its temperature rises. However, it then enters the second water channel layer 102 to dissipate heat from the energy storage device 50. Since the heat dissipation requirements of the energy storage device 50 may be relatively lower than those of the power device 40, the slightly elevated coolant temperature is still sufficient to meet its heat dissipation needs. This design rationally distributes the coolant temperature at different stages, achieving more optimized cooling for devices with different heat dissipation requirements and improving the rationality and effectiveness of heat dissipation.

[0046] Effective heat dissipation of the power device 40 and energy storage device 50 is achieved solely through a specific connection between the inlet 12, the outlet 13, and the first water channel layer 101 and the second water channel layer 102, eliminating the need for complex additional piping or diversion devices. This design simplifies the internal cooling structure of the motor controller, reduces the number of parts, lowers the difficulty of manufacturing and assembly, and also reduces potential failure points caused by complex structures, thereby improving the reliability and stability of the motor controller. Furthermore, the simple cooling structure design makes maintenance and repair of the motor controller easier, helping to reduce maintenance costs and downtime, and improving equipment availability.

[0047] Please cooperate. Figure 1 And see Figure 2As shown, in some embodiments, the power device 40 includes a first power module 401 and a second power module 402. The output power of the first power module 401 is greater than the output power of the second power module 402. The first power module 401 is arranged closer to the water inlet 12, and the second power module 402 is arranged farther away from the water inlet 12 relative to the first power module 401. It should be understood that placing the first power module 401, which has higher heat dissipation requirements, closer to the water inlet 12 allows the coolant, which is initially at a lower temperature upon entering the system, to flow through the first power module 401 first for heat dissipation. This prioritizes meeting the heat dissipation needs of the high-power module, ensuring it operates at a lower temperature and preventing performance degradation or damage due to overheating. This improves the operational stability and reliability of the first power module 401. The second power module 402, with relatively lower heat dissipation requirements, is arranged farther from the water inlet 12. Since the second power module 402 has a lower output power, its heat dissipation requirements are relatively lower, and the slightly elevated coolant temperature can still meet its heat dissipation needs. This layout rationally allocates the cooling resources of the coolant according to the heat dissipation requirements of different power modules, avoiding overcooling of the second power module 402 with lower heat dissipation requirements, while ensuring sufficient cooling of the first power module 401 with higher heat dissipation requirements, thereby improving the efficiency and resource utilization of the entire heat dissipation system.

[0048] It's also important to understand that the above layout can, to some extent, balance the temperature difference between the two power modules. This avoids excessive temperature differences between the two power modules due to uneven heat dissipation, helping to achieve better thermal balance among the power devices 40 and making the overall power device 40 system more stable. Determining the position of each power module on the heat dissipation path based on its power rating is a simple and direct design approach, eliminating the need for complex temperature monitoring and adjustment devices to control the coolant's dissipation from different power modules. While meeting the heat dissipation requirements of different power modules, it simplifies the design and control logic of the heat dissipation system, reduces system complexity and cost, improves system reliability, and reduces potential failure points caused by complex control logic.

[0049] Please see Figure 3 and Figure 4As shown, in some embodiments, the second water channel layer 102 includes a first flow channel 103 and a second flow channel 104, which are arranged in parallel. The energy storage device 50 includes a first heat source 501 and a second heat source 502. The first heat source 501 is in heat exchange contact with the first flow channel 103, and the second heat source 502 is in heat exchange contact with the second flow channel 104. It should be understood that the first heat source 501 is located below the first flow channel 103 and exchanges heat with the coolant in the first flow channel 103 by contacting the housing 10. The second heat source 502 is located below the second flow channel 104 and also exchanges heat with the coolant in the second flow channel 104 by contacting the housing 10. Individual heat dissipation is achieved by addressing the characteristics and heat dissipation needs of different heat sources. Each heat source has an independent heat dissipation channel, which allows for more precise control of heat dissipation conditions, such as coolant flow rate and velocity, to meet their respective heat dissipation requirements. Compared to a single channel dissipating heat from multiple heat sources, the heat dissipation effect is more targeted and effective.

[0050] The first heat source 501 is cooled by the first flow channel 103, and the second heat source 502 is cooled by the second flow channel 104. This increases the contact area and heat dissipation path between the coolant and the heat source, accelerating heat transfer and improving overall heat dissipation efficiency. Simultaneously, the parallel flow channel design reduces coolant flow resistance, ensuring sufficient coolant flow and further enhancing heat dissipation capacity. Furthermore, if either the first flow channel 103 or the second flow channel 104 malfunctions (e.g., becomes blocked or leaks), the other flow channel can still function normally, continuing to provide some cooling for its corresponding heat source. This achieves fault isolation to a certain extent, preventing the entire energy storage device 50 from overheating and being damaged due to a single flow channel malfunction. Additionally, it makes it easier to locate and troubleshoot faulty flow channels during maintenance and repair, reducing maintenance difficulty and costs.

[0051] Please see Figure 4As shown, in some embodiments, the motor controller further includes a first seal 60, which is disposed within the second water channel layer 102 to divide the second water channel layer 102 into a first flow channel 103 and a second flow channel 104. It should be understood that the first seal 60 can support the partition 30, improving the stability of the partition 30 after assembly. The first seal 60 effectively divides the second water channel layer 102 into independent first flow channels 103 and second flow channels 104, ensuring that the coolant flows in its respective channel, preventing the coolant from mixing with the coolant in the two channels. When the coolant flows in the two channels, heat transfer is more uniform, reducing the possibility of local overheating. Furthermore, the parallel flow channel arrangement can evenly dissipate heat from the two heat source areas, preventing coolant accumulation that leads to uneven heat dissipation. Simultaneously, it ensures that the heat dissipation function of each flow channel is independent and stable, allowing the first heat source 501 and the second heat source 502 of the energy storage device 50, which are in heat exchange contact with the flow channels, to receive targeted heat dissipation, improving the accuracy and effectiveness of heat dissipation.

[0052] Compared to using a complex structure to achieve flow channel separation, the design and manufacturing are simpler. The installation and fixing of the first seal 60 is relatively easy, without requiring overly complex processing of the motor controller housing 10, reducing manufacturing costs and process difficulty, and also facilitating later maintenance and repair.

[0053] It should be understood that the first sealing element 60 can be made of rubber or silicone material, which is elastic and can provide a certain supporting force to the partition 30 during assembly. More specifically, in some embodiments, the cover plate 20 is provided with heat dissipation teeth 201, which are housed within the first water channel layer 101. The first sealing element 60 can cause the partition 30 to abut against the heat dissipation teeth 201 on the cover plate 20 to form a stable assembly.

[0054] Please continue reading. Figure 4 As shown, in some embodiments, a protrusion 14 is provided in the second water channel layer 102. The protrusion 14 is connected to the side of the housing 10 facing the partition 30 and is spaced apart from the partition 30. A groove 140 is formed on the side of the protrusion 14 facing the partition 30. The first sealing member 60 is disposed in the groove 140 and seals the partition 30 and the protrusion 14. It should be understood that the groove 140 on the protrusion 14 provides a precise installation position for the first sealing member 60 to ensure the stability of the assembly of the first sealing member 60, improve the support of the first sealing member 60, realize the sealing connection between the partition 30 and the protrusion 14, ensure the separation effect of the first flow channel 103 and the second flow channel 104, reduce the risk of coolant leakage or mixing between the two flow channels due to the deviation of the sealing member installation position, thereby improving the reliability and stability of the heat dissipation system.

[0055] Please see Figure 4As shown, in some embodiments, the motor controller further includes a second seal 70, disposed within the second water channel layer 102 and located between the housing 10 and the partition 30. The second seal 70 extends along the edge of the partition 30 and seals the partition 30 and the housing 10. It should be understood that the second seal 70 extending along the edge of the partition 30 and sealing the partition 30 and the housing 10 effectively prevents coolant leakage from the gap between the housing 10 and the partition 30. During the operation of the motor controller, relative displacement may occur between the partition 30 and the housing 10 due to factors such as coolant flow and equipment vibration. By providing the first seal 60, the housing 10 and the partition 30 are elastically abutted, improving the structural stability of the motor controller, ensuring normal flow of coolant within the first water channel layer 101 and the second water channel layer 102, guaranteeing heat dissipation reliability, and extending its service life. Furthermore, the second seal 70, which is positioned along the edge of the partition 30, is relatively simple to assemble, easy to install and position; while achieving the sealing function, it does not occupy excessive internal space of the second water channel layer 102. Its compact structure makes full use of limited space, which is conducive to the miniaturization and integration of the motor controller, making it more flexible and convenient during installation and use.

[0056] Please continue reading. Figure 5 As shown, in some embodiments, the cover plate 20 is provided with a positioning pin 80, which connects the cover plate 20 and the partition plate 30. It should be understood that the positioning pin 80 provides positioning assistance for the installation of the cover plate 20 and the partition plate 30, making the assembly process of the cover plate 20 and the partition plate 30 simpler, improving assembly efficiency, reducing errors and rework caused by improper position adjustment during assembly (such as inaccurate relative positions of the cover plate 20 and the partition plate 30, uneven pressure on the seals, or local deformation), and reducing production costs. At the same time, the above design facilitates disassembly and maintenance, reducing maintenance time and difficulty, and improving maintainability. After connecting the cover plate 20 and the partition plate 30, the positioning pin 80 can, to a certain extent, enhance the stability of the overall structure of the motor controller, reducing the risk of relative displacement of the cover plate 20 and the partition plate 30 due to vibration, impact, and other factors during operation, thereby ensuring that the relative positions of the internal water channel layer and components remain unchanged and maintaining normal heat dissipation operation.

[0057] Please continue reading. Figure 5As shown, in some embodiments, the motor controller further includes a flow guide 90, which is disposed within the first water channel layer 101 and connects at least one of the cover plate 20 and the partition plate 30. At least two sets of first power modules 401 are provided, with the orthographic projection of one set of first power modules 401 on the partition plate 30 located on one side of the flow guide 90, and the orthographic projection of the other set of first power modules 401 on the partition plate 30 located on the other side of the flow guide 90. It should be understood that by setting the orthographic projections of two adjacent sets of first power modules 401 on the partition plate 30 to be located on both sides of the flow guide 90, the flow direction and path of the coolant within the first water channel layer 101 are changed. The flow guide 90 can guide the coolant to flow precisely and evenly to the heat dissipation fins 201 corresponding to each set of first power modules 401, which helps to achieve uniform heat dissipation from multiple sets of first power modules 401. Furthermore, the presence of the guide element 90 will cause the coolant to form turbulence during the flow process. Turbulence can increase the contact area and contact time between the coolant and the cover plate 20 and the first power module 401, improve the heat exchange efficiency, and ultimately improve the reliability and stability of the motor controller.

[0058] In some embodiments, at least two sets of second power modules 402 are provided. The orthographic projection of one set of second power modules 402 on the partition 30 is located on one side of the guide member 90, and the orthographic projection of the other set of second power modules 402 on the partition 30 is located on the other side of the guide member 90. It should be understood that by setting the orthographic projections of two adjacent sets of second power modules 402 on the partition 30 to be located on both sides of the guide member 90, the flow direction and path of the coolant in the first water channel layer 101 are changed. The guide member 90 can guide the coolant to flow precisely and evenly to the heat dissipation teeth 201 corresponding to each set of second power modules 402, which helps to achieve uniform heat dissipation of multiple sets of second power modules 402. Furthermore, the presence of the guide member 90 will cause the coolant to form turbulence during the flow process. Turbulence can increase the contact area and contact time between the coolant and the cover plate 20 and the second power modules 402, improve heat exchange efficiency, and ultimately improve the reliability and stability of the motor controller.

[0059] It should be understood that the cover plate 20 can be a water-cooled plate with heat dissipation teeth 201. The heat dissipation teeth 201 are housed in the first water channel layer 101. The water-cooled plate has a power device 40 on the side away from the heat dissipation teeth 201. The heat of the power device 40 is conducted to the first water channel layer 101 through the heat dissipation teeth 201 and exchanged with the coolant.

[0060] In some embodiments, the first power module 401 and the second power module 402 are directly welded to the cover plate 20 using a vacuum reflow soldering process. This process enables a strong metallurgical bond between the first power module 401, the second power module 402, and the cover plate 20, significantly reducing contact thermal resistance. Reflow soldering in a vacuum environment avoids oxidation and other adverse phenomena during the welding process, ensuring the stability and reliability of the weld quality. This highly integrated process facilitates assembly and further improves heat transfer efficiency. Directly welding the power modules to the cover plate 20 reduces the use of intermediate connectors (such as bolts and clamps), simplifying the internal structure of the motor controller. Furthermore, compared to other connection methods, this welding process has a relatively simple assembly flow, requiring no complex installation steps or tools, thus improving production efficiency, reducing production costs, and facilitating the miniaturization and integration of the motor controller.

[0061] Please continue reading. Figure 5 As shown, in some embodiments, the flow guide 90 includes multiple spaced-apart guide ribs 901. It should be understood that the multiple spaced-apart guide ribs 901 form a series of regular flow channels within the first water channel layer 101. The coolant flows through these channels, and its flow direction and velocity can be more precisely controlled. Each guide rib 901 guides the coolant to flow along a predetermined path, avoiding disordered flow or short-circuiting, ensuring that the coolant accurately flows through the heat dissipation teeth 201 corresponding to each group of first power modules 401, improving the targeting and efficiency of heat dissipation. Simultaneously, the presence of multiple guide ribs 901 generates more disturbance during coolant flow. As the coolant flows through the guide ribs 901, it continuously changes direction and velocity, thus forming stronger turbulence. Turbulence can break the boundary layer of the coolant, increasing the contact area and contact time between the coolant and the cover plate 20, greatly improving heat exchange efficiency, and allowing heat to be transferred from the heat source to the coolant more quickly. Turbulence also promotes mixing within the coolant, resulting in a more uniform temperature distribution. Coolants at different temperatures mix under the action of turbulence, avoiding localized overheating or underheating, and further improving the overall heat dissipation effect.

[0062] It is also important to understand that the multiple guide ribs 901 are arranged at intervals, which can make the connection between the cover plate 20 and the baffle plate 30 more dispersed and uniform, reduce stress concentration, effectively transfer the force generated by the flow of coolant to the baffle plate 30 and the cover plate 20, enhance the connection stability between them, prevent the baffle plate 30 and the cover plate 20 from loosening or shifting due to vibration or pressure changes, and ensure normal heat dissipation operation.

[0063] This application also discloses a heat dissipation channel, including a housing 10, a cover plate 20, and a partition plate 30. The housing 10 has a communicating receiving cavity 100 and an opening 11; the cover plate 20 seals the opening 11; the partition plate 30 is disposed within the receiving cavity 100 to divide the interior of the receiving cavity 100 into a first water channel layer 101 and a second water channel layer 102, with the first water channel layer 101 located on the side of the second water channel layer 102 facing the cover plate 20. It should be understood that dividing the receiving cavity 100 into the first water channel layer 101 and the second water channel layer 102 by the partition plate 30 allows for different heat dissipation requirements; the cover plate 20 seals the opening 11 to prevent liquid leakage and ensure the normal operation of the heat dissipation system. The layered design extends the heat dissipation path, increases the heat dissipation area, allows for sufficient heat exchange between the liquid and the housing 10 during flow, and the two water channels can meet differentiated heat dissipation needs, improving heat dissipation efficiency and flexibility, making it suitable for applications with high heat dissipation requirements.

[0064] In some embodiments, the housing 10 is provided with an inlet 12 and an outlet 13. A first water channel layer 101 is connected to the inlet 12, and a second water channel layer 102 is connected to the outlet 13. The inlet 12 and the outlet 13 are located on the same side of the housing 10, and the first water channel layer 101 is connected to the second water channel layer 102 on the side away from the inlet 12. This heat dissipation water channel structure design allows the cooling medium to enter the first water channel layer 101 from the inlet 12 on the same side, flow along it to the side away from the inlet 12, and then enter the second water channel layer 102, finally flowing out from the outlet 13 on the same side. This forms a meandering water flow path (serpentine path), effectively extending the residence time of the cooling medium in the housing 10 and increasing the heat exchange time with the housing 10. Simultaneously, the inlet and outlet 13 on the same side facilitate external pipe connection and layout, reducing installation space occupation, and the layered interconnection design makes heat dissipation more orderly, improving overall heat dissipation efficiency and heat dissipation uniformity.

[0065] In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. At the same time, the above embodiments can be combined with each other without conflict. For example, the layout of the first power module 401 and the layout of the second power module 402 can be in the same embodiment.

[0066] The foregoing has provided a detailed description of a motor controller and a cooling water channel provided in the embodiments of this application, and specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A motor controller, characterized in that, include: A housing (10) having a communicating receiving cavity (100) and an opening (11); Cover plate (20), the cover plate (20) covering the opening (11); A partition (30) is disposed in the receiving cavity (100) to divide the interior of the receiving cavity (100) into a first water channel layer (101) and a second water channel layer (102), wherein the first water channel layer (101) is located on the side of the second water channel layer (102) facing the cover plate (20); A power device (40) is disposed on a cover plate (20) and makes heat exchange contact with the first water channel layer (101); An energy storage device (50) is disposed outside the housing (10) and has heat exchange contact with the second water channel layer (102).

2. The motor controller according to claim 1, characterized in that, The shell (10) is provided with an inlet (12) and an outlet (13). The inlet (12) is connected to the first water channel layer (101), and the outlet (13) is connected to the second water channel layer (102). The first water channel layer (101) is connected to the second water channel layer (102) on the side away from the inlet (12).

3. The motor controller according to claim 2, characterized in that, The power device (40) includes a first power module (401) and a second power module (402), wherein the output power of the first power module (401) is greater than the output power of the second power module (402); The first power module (401) is arranged close to the water inlet (12), and the second power module (402) is arranged away from the water inlet (12) relative to the first power module (401).

4. The motor controller according to claim 1, characterized in that, The second waterway layer (102) includes a first flow channel (103) and a second flow channel (104), wherein the first flow channel (103) and the second flow channel (104) are arranged in parallel. The energy storage device (50) includes a first heat source (501) and a second heat source (502), wherein the first heat source (501) is in heat exchange contact with the first flow channel (103) and the second heat source (502) is in heat exchange contact with the second flow channel (104).

5. The motor controller according to claim 4, characterized in that, The motor controller further includes a first seal (60) disposed within the second water channel layer (102) to divide the second water channel layer (102) into the first flow channel (103) and the second flow channel (104).

6. The motor controller according to claim 5, characterized in that, The second water channel layer (102) is provided with a protrusion (14), which is connected to the side of the housing (10) facing the partition (30) and spaced apart from the partition (30). The protrusion (14) has a groove (140) on the side facing the partition (30), and the first sealing member (60) is disposed in the groove (140) and seals the partition (30) and the protrusion (14).

7. The motor controller according to any one of claims 1 to 6, characterized in that, The motor controller further includes a second seal (70) disposed within the second water channel layer (102) and located between the housing (10) and the partition (30). The second seal (70) extends along the edge of the partition (30) and seals the partition (30) and the housing (10).

8. The motor controller according to claim 1, characterized in that, The cover plate (20) is provided with a positioning pin (80), which connects the cover plate (20) and the partition plate (30).

9. The motor controller according to claim 3, characterized in that, The motor controller further includes a flow guide (90), which is disposed within the first waterway layer (101) and connects at least one of the cover plate (20) and the partition plate (30); The first power module (401) is provided in at least two sets. In one set, the orthographic projection of the first power module (401) on the partition (30) is located on one side of the guide (90), and in the other set, the orthographic projection of the first power module (401) on the partition (30) is located on the other side of the guide (90). And / or, the second power module (402) is provided in at least two sets, wherein the orthographic projection of one set of the second power module (402) on the partition (30) is located on one side of the guide (90), and the orthographic projection of the other set of the second power module (402) on the partition (30) is located on the other side of the guide (90).

10. The motor controller according to claim 9, characterized in that, The flow guide (90) includes a plurality of flow guide ribs (901) arranged at intervals.

11. A heat dissipation channel, characterized in that, Includes a housing (10) having a communicating receiving cavity (100) and an opening (11); Cover plate (20), the cover plate (20) covering the opening (11); A partition (30) is disposed in the receiving cavity (100) to divide the interior of the receiving cavity (100) into a first water channel layer (101) and a second water channel layer (102), wherein the first water channel layer (101) is located on the side of the second water channel layer (102) facing the cover plate (20).

12. The heat dissipation channel according to claim 11, characterized in that, The housing (10) is provided with an inlet (12) and an outlet (13). The first water channel layer (101) is connected to the inlet (12), and the second water channel layer (102) is connected to the outlet (13). The inlet (12) and the outlet (13) are located on the same side of the housing, and the first water channel layer (101) is connected to the second water channel layer (102) on the side away from the inlet (12).

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