High and low voltage zone isolation and electromagnetic shielding components for new energy motor controller housings and their applications

Abstract

This invention relates to the field of new energy motor technology, specifically to a high- and low-voltage zone isolation and electromagnetic shielding assembly for a new energy motor controller housing and its application. The assembly includes a shielding shell, a high-voltage zone, and a low-voltage zone. A heat dissipation assembly is located inside the shielding shell, comprising a main water pipe, two heat exchange pipes, and two connecting pipes. An adjustment structure is located outside the connecting pipes, comprising several extrusion plates, a rotating ring, and teeth. A trigger structure is located at the rear of the adjustment structure, comprising a connecting sleeve, a push rod, and a shape memory metal component. A gear is located at the rear of the rotating ring, and a crossbar is fixed to the outer side of the left gear, abutting against the top of the push rod. The left and right gears are connected by a gear set transmission. This invention dissipates heat from the high-voltage and low-voltage zones respectively by setting two heat exchange pipes. By setting the trigger and adjustment structures, the flow rate of the corresponding heat exchange pipe is increased when the temperature in the high-voltage zone is high, improving the heat dissipation effect.

Description

Technical Field

[0001] This invention belongs to the field of new energy motor technology, specifically a high and low voltage partition isolation and electromagnetic shielding component for a new energy motor controller housing and its application. Background Technology

[0002] A new energy motor controller is a core electronic control component with key functions such as fault protection and dynamic torque adjustment. The controller consists of a high-voltage section and a low-voltage section. The high-voltage section typically includes IGBT modules and DC high-voltage connectors, primarily responsible for the high-voltage, high-current energy conversion in the new energy motor. The low-voltage section generally houses sensors, storage devices, and control modules. Therefore, a heat dissipation component is usually installed inside the controller housing for heat dissipation.

[0003] For example, invention patent CN115379676A discloses a motor controller in the field of new energy vehicles. The controller includes: an upper housing and a lower housing assembled together, with an upper cavity formed in the upper part of the lower housing and a lower cavity formed in the lower part of the lower housing, the upper cavity located between the lower housing and the upper housing; a control circuit board and a drive circuit board disposed in the upper cavity, the control circuit board and the drive circuit board being separated by a shielding plate to prevent mutual electromagnetic interference; and a capacitor, a power module assembly, a water cooler for cooling the power module assembly, and a current sensor disposed in the lower cavity. The lower housing has a mounting structure for cooperating with a transmission housing, the mounting structure being configured to mount the lower housing to the transmission housing, such that the transmission housing becomes the base of the motor controller, and the lower cavity is located between the lower housing and the transmission housing.

[0004] Based on the above cases and actual situations, we have identified the following problems: The high-voltage zone is mainly used for the high-voltage, high-current power conversion in new energy motors and is the main heat source for the new energy motor controller. The low-voltage zone generates less heat. The existing heat dissipation structure directly sets a single flow channel in the housing of the new energy motor controller to dissipate heat from both the high-voltage and low-voltage zones simultaneously. However, due to the difference in heat generation and temperature between the high-voltage and low-voltage zones, the heat dissipation effect is poor. Furthermore, the high-voltage zone is prone to heat accumulation under high operating intensity, causing a temporary increase in its temperature. The existing heat dissipation structure has a fixed flow rate within the flow channel, which results in ineffective heat dissipation under high-intensity operation. Summary of the Invention

[0005] The purpose of this invention is to provide a high- and low-pressure zone isolation and electromagnetic shielding component for a new energy motor controller housing and its application. By setting two heat exchange tubes to dissipate heat in the high-pressure zone and the low-pressure zone respectively, and by setting a triggering structure and an adjustment structure, the flow rate of the corresponding heat exchange tube is increased when the temperature in the high-pressure zone is high, thereby improving the heat dissipation effect and solving the above-mentioned problems of the prior art.

[0006] To achieve the above objectives, the present invention provides a high and low voltage partition isolation and electromagnetic shielding assembly for a new energy motor controller housing, including a shielding shell, a high voltage zone and a low voltage zone respectively disposed on the left and right sides of the lower half of the shielding shell, and a heat dissipation assembly for cooling the high voltage zone and the low voltage zone disposed in the upper half of the shielding shell. The heat dissipation assembly includes a main water pipe disposed in the middle of the top surface of the shielding shell, two heat exchange pipes symmetrically disposed on the left and right sides of the main water pipe, and two connecting pipes for connecting the main water pipe and the heat exchange pipes. An adjustment structure for changing the diameter of the water inlet of the connecting pipe is provided outside the connecting pipe. The adjustment structure includes several extrusion plates regularly distributed in a ring outside the connecting pipe, a rotating ring that drives the extrusion plates to rotate and contract, and teeth fixed on the edge of the rotating ring. The rear side of the adjustment structure is provided with a trigger structure for driving two rotating rings to rotate in opposite directions. The triggering structure includes a connecting sleeve vertically disposed above the high-voltage zone, a push rod slidably connected to the upper part of the connecting sleeve, and a memory metal part disposed at the bottom of the connecting sleeve for pushing the push rod upward. The rear side of each rotating ring is provided with a gear that meshes with the corresponding tooth. A horizontal bar is fixed to the middle of the outer side of the left gear. The horizontal bar abuts against the top of the push rod. The left and right gears are connected by a gear set transmission.

[0007] In this design, considering existing technologies, the high-voltage zone typically includes IGBT modules and DC high-voltage connectors, primarily responsible for high-voltage, high-current power conversion in new energy motors, and is the main heat source for the new energy motor controller. The low-voltage zone generally houses sensors, storage devices, and control modules, generating less heat. Therefore, heat dissipation structures are typically incorporated within the new energy motor controller for cooling. Existing heat dissipation structures directly utilize a single flow channel within the controller housing to simultaneously cool both the high-voltage and low-voltage zones. However, due to the inherent temperature differences between the high-voltage and low-voltage zones, the cooling effect is poor. Furthermore, the high-voltage zone is prone to heat accumulation under heavy workloads, leading to a temporary temperature increase. The fixed flow rate within the existing heat dissipation structure also results in ineffective cooling during high-intensity operation. Therefore, this invention addresses this issue by using two heat exchange tubes to cool the high-voltage and low-voltage zones respectively. By incorporating triggering and adjustment structures, the flow rate of the corresponding heat exchange tube is increased when the high-voltage zone temperature is high, thereby enhancing the cooling effect.

[0008] In the technical solution of the present invention, heat dissipation fins are fixed on the outside of the shielding shell, and two isolation plates are provided in the middle of the bottom surface of the shielding shell to isolate the high-voltage area and the low-voltage area. An installation plate is provided in the shielding shell above the high-voltage area and the low-voltage area. The edge of the installation plate abuts against the inner wall of the shielding shell, and the bottom surface of the installation plate abuts against the top surface of the isolation plate. Two support plates are symmetrically fixed on the upper part of the installation plate near the middle to install the trigger structure.

[0009] In this setup, an isolation plate is used to separate the high-voltage area from the low-voltage area. Electromagnetic shielding is achieved by combining the mounting plate, the isolation plate, and the shielding shell to form a Faraday cage.

[0010] In the technical solution of the present invention, the top end of the main water pipe extends through the top surface of the shielding shell, and the main water pipe is fixed with installation buckets on the left and right sides of the outer wall portion inside the shielding shell. The inner end of the connecting pipe is fixed at the connection point between the corresponding side installation bucket and the main water pipe. The connecting pipe is a high-temperature resistant silicone rubber hose.

[0011] In this setup, an adjustment structure is installed using an installation bucket. The connecting pipe is made of high-temperature resistant silicone rubber tubing, ensuring its elasticity and keeping its outer wall in close contact with the edge of the extrusion plate.

[0012] In the technical solution of the present invention, the heat exchange tubes are distributed in a serpentine pattern above the mounting plate, and the outer ends of the heat exchange tubes extend through the corresponding side wall of the shield shell. The heat exchange tubes and the main water pipe are connected by the same coolant circulation system.

[0013] In this setup, the heat exchange tubes are arranged in a serpentine pattern above the mounting plate, increasing the contact area between the heat exchange tubes and the mounting plate and improving the heat dissipation effect.

[0014] In the technical solution of the present invention, the adjustment structure is set in the mounting barrel on the corresponding side, a fixing plate is coaxially fixed in the inner side of the mounting barrel, a rotating ring is provided on the outer side of the fixing plate, an opening for the connecting pipe to pass through is provided in the middle of the fixing plate, a number of locking blocks are fixed on the edge of the fixing plate, and a number of locking block grooves corresponding one-to-one with the locking blocks are provided on the rotating ring.

[0015] In this setting, the rotating ring is supported and limited by setting a locking block and a locking block slot.

[0016] In the technical solution of the present invention, the extrusion plate is triangular in shape, the rotating ring is connected to the extrusion plates by a plurality of push rods, the outer end of the push rod is hinged to the rotating ring, the first counterclockwise end of the extrusion plate is hinged to the inner end of the push rod, the push rod is bent clockwise from the inside to the outside, and the second counterclockwise end of the extrusion plate is rotatably connected to the fixed plate.

[0017] In this setup, a push rod is used to ensure that when the rotating ring rotates clockwise, the push rod pulls the corresponding extrusion plate to rotate clockwise around the fixed end and open, and the connecting pipe will open under its own elasticity.

[0018] In the technical solution of the present invention, the connecting sleeve extends through the mounting plate from top to bottom, a heat-conducting plate is fixed on the bottom surface of the connecting sleeve, the top surface of the heat-conducting plate is fixed to the bottom end of the memory metal part, flange plates are symmetrically fixed on the outer wall of the push rod, a flange plate groove adapted to the flange plate is provided in the connecting sleeve, and the flange plate and the flange plate groove are slidably connected to prevent the push rod from rotating.

[0019] In this setup, a heat-conducting plate is used to improve heat conduction efficiency, ensuring that the shape memory metal components can respond promptly to the internal temperature of the high-pressure zone. Flange plates and flange grooves are incorporated to prevent the push rod from rotating and detaching from the crossbar, which would prevent the drive from functioning.

[0020] In the technical solution of the present invention, the inner end of the crossbar is coaxially fixed with the central shaft of the gear on the left side, the crossbar is located on the front side of the central shaft of the gear on the left side, a transmission rod is coaxially fixed on the inner side of the gear, two transmission rods pass through the support plate on the corresponding side, the two transmission rods are rotatably connected to the support plate on the corresponding side respectively, and the inner ends of the two transmission rods are connected by the gear set.

[0021] In this setup, the gear sets are configured so that the transmission rods on both sides rotate in opposite directions.

[0022] In the technical solution of the present invention, a fixing sleeve is fixed to the inner side wall of the support plate on the left side, the transmission rod on the left side passes through the fixing sleeve, and a torsion spring is provided between the transmission rod on the left side and the fixing sleeve. The inner end of the torsion spring is fixed to the transmission rod on the left side, and the other end is fixed to the fixing sleeve.

[0023] In this setup, a torsion spring is used so that after the temperature in the high-pressure zone drops, the shape memory metal component returns to its original position, and the push rod falls back under its own weight. At this time, the torsion spring will drive the transmission rod on the left to rotate clockwise and reset, thus enabling repeated use.

[0024] On the other hand, the present invention also provides the application of high and low voltage partition isolation and electromagnetic shielding components in the housing of the new energy motor controller, which is the application of the high and low voltage partition isolation and electromagnetic shielding components in the housing of the new energy motor controller.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, two connecting pipes are set between the main water pipe and the heat exchange pipes on both sides, and the inlet diameters of the two connecting pipes are different. By controlling the different inlet flow rates, heat is dissipated in the high-pressure area and the low-pressure area respectively, so as to adapt to the different heating temperatures of the two areas, achieve precise heat dissipation, and improve the heat dissipation effect.

[0026] 2. In this invention, by setting an adjustment structure and a triggering structure, when the high-pressure area is severely overheated, the shape memory metal part begins to extend and pushes the top rod, thereby pushing the crossbar to drive the left gear to rotate counterclockwise, causing the left rotating ring to rotate clockwise, which in turn drives the left extrusion plate to rotate outward, increasing the diameter of the corresponding connecting pipe in the high-pressure area, increasing the flow rate of the left heat exchange pipe, improving the heat dissipation effect, and achieving more precise heat dissipation. At the same time, under the action of the gear set, the right gear rotates clockwise, reducing the diameter of the connecting pipe in the low-pressure area, avoiding the situation where, with a fixed total water inflow, the increased diameter of the connecting pipe in the high-pressure area leads to a decrease in inlet water pressure, resulting in a decrease in flow rate and weakening the heat dissipation effect. Attached Figure Description

[0027] Figure 1 This is a simplified schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the shielding shell of the present invention; Figure 3 This is an exploded view of the high-pressure zone, low-pressure zone, and heat dissipation components in this invention; Figure 4 This is a schematic diagram of the heat dissipation component from another perspective in this invention; Figure 5 This is a cross-sectional view of the main water pipe in this invention; Figure 6 This is a schematic diagram of the connecting pipe, adjusting structure, and triggering structure in this invention; Figure 7 This is an exploded view of the adjustment structure in this invention; Figure 8 This is a cross-sectional view of the connecting sleeve in this invention; Figure 9 This is an exploded view of the gear in this invention; Figure 10 This is a schematic diagram of the connection between the left and right gears in this invention; Explanation of reference numerals in the attached figures: 100. Shielding shell; 101. High voltage area; 102. Low voltage area; 103. Mounting plate; 104. Isolation plate; 105. Support plate; 1051. Fixing sleeve; 200. Heat dissipation component; 201. Main water pipe; 2011. Mounting tank; 202. Heat exchanger tube; 203. Connecting pipe; 210. Adjustment structure; 211. Extrusion plate; 212. Fixing plate; 2121. Locking block; 213. Rotary ring; 2131. Locking block groove; 214. Tooth; 215. Push rod; 220. Triggering structure; 221. Connecting sleeve; 222. Heat conduction plate; 223. Shape memory metal part; 224. Top rod; 225. Gear; 2251. Crossbar; 226. Transmission rod; 227. Torsion spring; 228. Gear set. Detailed Implementation

[0028] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0029] Unless otherwise expressly stated, throughout this specification, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0030] Reference Figures 1-10 As shown, this embodiment provides a technical solution: The high- and low-voltage partitioning isolation and electromagnetic shielding components of the new energy motor controller housing are used within the new energy motor controller housing. These include a shielding shell 100, and high-voltage zone 101 and low-voltage zone 102 respectively located on the left and right sides of the lower half of the shielding shell 100. High-voltage zone 101 typically includes IGBT modules and DC high-voltage connectors, primarily responsible for the high-voltage, high-current power conversion tasks in the new energy motor, and is the main heat source for the new energy motor controller. Low-voltage zone 102 typically houses sensors, storage devices, and control modules, and generates less heat.

[0031] The upper part of the shielding shell 100 is equipped with a heat dissipation assembly 200 for cooling the high-pressure zone 101 and the low-pressure zone 102. The heat dissipation assembly 200 includes a main water pipe 201 located in the middle of the top surface of the shielding shell 100, two heat exchange pipes 202 symmetrically arranged on the left and right sides of the main water pipe 201, and two connecting pipes 203 for connecting the main water pipe 201 and the heat exchange pipes 202. An adjustment structure 210 is provided on the outside of the connecting pipes 203 to change the diameter of the inlet pipe of the connecting pipe 203. By setting two heat exchange pipes 202 to dissipate heat from the high-pressure zone 101 and the low-pressure zone 102 respectively, more precise heat dissipation is achieved and the heat dissipation effect is improved.

[0032] Specifically, the adjustment structure 210 includes several extrusion plates 211 arranged in a ring around the connecting pipe 203, a rotating ring 213 that drives the extrusion plates 211 to rotate and contract, and teeth 214 fixed to the edge of the rotating ring 213. A trigger structure 220 is provided on the rear side of the adjustment structure 210 to drive the two rotating rings 213 to rotate in opposite directions. By setting the extrusion plates 211, when the trigger structure 220 triggers the rotating ring 213 to rotate, it drives the extrusion plates 211 to rotate, thereby changing the diameter of the connecting pipes 203 on both sides, and thus changing the inlet water flow of the heat exchange pipes 202 on both sides, further achieving precise heat dissipation and improving the heat dissipation effect. In addition, the minimum diameter of the left connecting pipe 203 is greater than the maximum diameter of the right connecting pipe 203.

[0033] Furthermore, the trigger structure 220 includes a connecting sleeve 221 vertically disposed above the high-voltage zone 101, a push rod 224 slidably connected to the upper part of the connecting sleeve 221, and a shape memory metal component 223 disposed at the bottom of the connecting sleeve 221 for pushing the push rod 224 upward. The shape memory metal component 223 is a nickel-titanium alloy, which is normally in a contracted state. When the temperature is higher than the threshold, the shape memory metal component 223 begins to elongate. The specific working principle is the existing technology of shape memory alloys, which will not be elaborated here. The rear side of the rotating ring 213 is provided with gears 225 that mesh with the corresponding teeth 214. A horizontal bar 2251 is fixed to the middle of the outer side of the left gear 225. The horizontal bar 2251 abuts against the top of the push rod 224. The left and right gears 225 are connected by a gear set 228.

[0034] Under high-intensity operation, when the temperature in the high-pressure zone 101 rises above the threshold of the shape memory metal component 223, the shape memory metal component 223 begins to elongate and pushes the push rod 224 upwards. This pushes the crossbar 2251, causing the left gear 225 to rotate counterclockwise, which in turn causes the left rotating ring 213 to rotate clockwise. This, in turn, causes the left extrusion plate 211 to rotate outwards, increasing the diameter of the left connecting pipe 203, increasing the flow rate of the left heat exchange tube 202, improving the heat dissipation effect, and achieving more precise heat dissipation. At the same time, under the action of the gear set 228, the right gear 225 rotates clockwise, which in turn causes the right extrusion plate 211 to rotate inwards, decreasing the diameter of the right connecting pipe 203. This prevents the increase in the diameter of the left connecting pipe 203 from causing a decrease in the inlet water pressure and thus reducing the flow rate of the left heat exchange tube 202, thereby weakening the heat dissipation effect, when the total inlet water volume is constant.

[0035] Please see Figures 1-3 As shown, heat dissipation fins are fixed to the outside of the shielding shell 100 to further improve heat dissipation. Two isolation plates 104 are located in the middle of the bottom surface of the shielding shell 100 to isolate the high-voltage zone 101 and the low-voltage zone 102. An mounting plate 103 is located inside the shielding shell 100 above the high-voltage zone 101 and the low-voltage zone 102. The edge of the mounting plate 103 abuts against the inner wall of the shielding shell 100, and the bottom surface of the mounting plate 103 abuts against the top surface of the isolation plates 104.

[0036] The IGBT modules and high-voltage busbars in the high-voltage zone 101 are responsible for energy conversion. During switching, they generate strong electromagnetic radiation sources that can crosstalk to surrounding circuits. The low-voltage zone contains numerous sensitive circuits, and crosstalk can lead to loss of control or damage. Therefore, national standards stipulate that electromagnetic isolation must be implemented within the motor controller. This is achieved by separating the high-voltage zone 101 and the low-voltage zone 102 using an isolation plate 104. The bottom surface of the mounting plate 103, the inner wall of the shielding shell 100 below the mounting plate 103, and the outer wall of the isolation plate 104 are all coated with a conductive coating. After installation, the high-voltage zone 101 and the low-voltage zone 102 form a sealed structure, creating a Faraday cage for electromagnetic shielding. Additionally, electromagnetic shielding is also required between components within the high-voltage zone 101 (not shown in the figure), and electromagnetic shielding is achieved through filters in the circuitry; this is existing technology and will not be elaborated upon here. Two symmetrical support plates 105 are fixed to the upper part of the mounting plate 103 near the center for mounting the trigger structure 220.

[0037] Please see Figures 4-5 As shown, the top end of the main water pipe 201 extends through the top surface of the shielding shell 100. Mounting buckets 2011 are fixed to the left and right sides of the outer wall inside the shielding shell 100, and the adjusting structure 210 is installed through the mounting buckets 2011. The inner end of the connecting pipe 203 is fixed to the connection point between the corresponding mounting bucket 2011 and the main water pipe 201 to prevent leakage. The connecting pipe 203 is a high-temperature resistant silicone rubber hose, ensuring its elasticity and keeping its outer wall tightly pressed against the edge of the extrusion plate 211.

[0038] Furthermore, the heat exchange tubes 202 are arranged in a serpentine pattern above the mounting plate 103, increasing the contact area between the heat exchange tubes 202 and the mounting plate 103 and improving the heat dissipation effect. The outer ends of the heat exchange tubes 202 protrude from the corresponding side wall of the shielding shell 100. The heat exchange tubes 202 and the main water pipe 201 are connected by the same coolant circulation system. The coolant circulation system of the new energy motor controller is existing technology and will not be described in detail here.

[0039] Please see Figures 5-7As shown, the adjustment structure 210 is installed inside the mounting barrel 2011 on the corresponding side. A fixing plate 212 is coaxially fixed inside the mounting barrel 2011, and a rotating ring 213 is provided on the outer side of the fixing plate 212. An opening for the connecting pipe 203 to pass through is provided in the middle of the fixing plate 212. The diameter of the opening is smaller than the original diameter of the connecting pipe 203, ensuring that the connecting pipe 203 is always in a contracted state and remains tightly pressed against the edge of the pressing plate 211. Several locking blocks 2121 are fixed to the edge of the fixing plate 212. The rotating ring 213 has several locking block grooves 2131 corresponding to the locking blocks 2121. The arc length of the locking block grooves 2131 is greater than the size of the locking blocks 2121, allowing the locking blocks 2121 to slide within the grooves. The locking blocks 2121 and the locking block grooves 2131 support and limit the rotation ring 213.

[0040] Specifically, the extrusion plate 211 is triangular in shape. The rotating ring 213 is connected to the extrusion plates 211 by several push rods 215. The outer end of the push rod 215 is hinged to the rotating ring 213. The first counterclockwise end of the extrusion plate 211 is hinged to the inner end of the push rod 215. The push rod 215 is bent clockwise from the inside to the outside. The second counterclockwise end of the extrusion plate 211 is rotatably connected to the fixed plate 212. This ensures that when the rotating ring 213 rotates clockwise, the push rod 215 pulls the corresponding extrusion plate 211 to rotate clockwise around the fixed end and open it. The connecting pipe 203 will then open under its own elasticity.

[0041] Please see Figure 8 As shown, the connecting sleeve 221 extends vertically through the mounting plate 103. A heat-conducting plate 222 is fixed to the bottom surface of the connecting sleeve 221, and the top surface of the heat-conducting plate 222 is fixed to the bottom end of the shape memory metal component 223. By setting the heat-conducting plate 222, the heat conduction efficiency is improved, ensuring that the shape memory metal component 223 can respond promptly to the internal temperature of the high-pressure zone 101. Flange plates are symmetrically fixed to the outer wall of the push rod 224. The connecting sleeve 221 has a flange plate groove that matches the flange plate. The flange plate and the flange plate groove are slidably connected. By setting the flange plate and the flange plate groove, the push rod 224 is prevented from rotating and disengaging from the crossbar 2251, thus preventing it from being driven.

[0042] Please see Figures 9-10As shown, the inner end of the crossbar 2251 is coaxially fixed to the central shaft of the left gear 225. The crossbar 2251 is located on the front side of the central shaft of the left gear 225, ensuring that the gear 225 rotates counterclockwise when the push rod 224 pushes it up. A transmission rod 226 is coaxially fixed to the inner side of the gear 225. Two transmission rods 226 pass through the corresponding side support plates 105 and are rotatably connected to the corresponding side support plates 105. The inner ends of the two transmission rods 226 are connected by a gear set 228. It should be noted that the gear set 228 consists of three bevel gears. Two of them are coaxially fixed to the inner end faces of the two transmission rods 226, and the middle bevel gear is rotatably connected to the top surface of the mounting plate 103 and meshes with the two bevel gears. By setting the gear set 228, the transmission rods 226 on both sides rotate in opposite directions.

[0043] Furthermore, a fixing sleeve 1051 is fixed to the inner wall of the left support plate 105. The left transmission rod 226 passes through the fixing sleeve 1051. A torsion spring 227 is provided between the left transmission rod 226 and the fixing sleeve 1051. The inner end of the torsion spring 227 is fixed to the left transmission rod 226, and the other end is fixed to the fixing sleeve 1051. By setting the torsion spring 227, after the temperature of the high-pressure zone 101 drops, the shape memory metal part 223 returns to its original position, and the push rod 224 falls back under its own gravity. At this time, the torsion spring 227 will drive the left transmission rod 226 to rotate clockwise and reset, realizing reuse.

[0044] In this invention, when the high and low pressure partition isolation and electromagnetic shielding components of the new energy motor controller housing are used, under normal temperature conditions, the diameter of the left connecting pipe 203 is larger than that of the right connecting pipe 203. That is, the flow rate in the heat exchange tube 202 corresponding to the high pressure zone 101 is large, and the flow rate in the heat exchange tube 202 corresponding to the low pressure zone 102 is small, so as to ensure accurate heat dissipation and improve the heat dissipation effect.

[0045] Under high-intensity operation of the motor controller, the temperature of the high-pressure zone 101 rises. When the temperature exceeds the threshold of the shape memory metal 223, the shape memory metal 223 begins to elongate and pushes the push rod 224, thereby pushing the crossbar 2251 to drive the left gear 225 to rotate counterclockwise. Under the action of the teeth 214, the left rotating ring 213 rotates clockwise. The push rod 215 pulls the corresponding extrusion plate 211 to rotate clockwise outward around the fixed end and open it, increasing the diameter of the left connecting pipe 203, increasing the flow rate of the left heat exchange pipe 202, improving the heat dissipation effect, and compressing the torsion spring 227.

[0046] Under the action of gear set 228, right gear 225 rotates clockwise, which in turn drives right extrusion plate 211 to rotate inward and reduce the diameter of right connecting pipe 203. This prevents the diameter of left connecting pipe 203 from increasing, which would reduce the water pressure and thus reduce the flow rate of left heat exchange tube 202, thereby weakening the heat dissipation effect, when the total water inflow is constant.

[0047] After cooling, the shape memory metal part 223 returns to its original position, and the push rod 224 falls back under its own weight. At this time, the torsion spring 227 will drive the left transmission rod 226 to rotate clockwise and reset, so as to achieve reuse.

[0048] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the specification and its equivalents.

Claims

1. A high- and low-voltage zone isolation and electromagnetic shielding assembly for a new energy motor controller housing, comprising a shielding shell and high-voltage and low-voltage zones respectively disposed on the left and right sides of the lower half of the shielding shell, characterized in that: The upper part of the shielding shell is provided with a heat dissipation component for cooling the high-pressure area and the low-pressure area. The heat dissipation component includes a main water pipe located in the middle of the top surface of the shielding shell, two heat exchange pipes symmetrically arranged on the left and right sides of the main water pipe, and two connecting pipes for connecting the main water pipe and the heat exchange pipes. The connecting pipes are provided with an adjustment structure to change the diameter of the inlet pipe of the connecting pipe. The adjustment structure includes several extrusion plates regularly distributed in a ring outside the connecting pipe, a rotating ring that drives the extrusion plates to rotate and contract, and teeth fixed on the edge of the rotating ring. The rear side of the adjustment structure is provided with a trigger structure for driving two rotating rings to rotate in opposite directions. The triggering structure includes a connecting sleeve vertically disposed above the high-voltage zone, a push rod slidably connected to the upper part of the connecting sleeve, and a memory metal part disposed at the bottom of the connecting sleeve for pushing the push rod upward. The rear side of each rotating ring is provided with a gear that meshes with the corresponding tooth. A horizontal bar is fixed to the middle of the outer side of the left gear. The horizontal bar abuts against the top of the push rod. The left and right gears are connected by a gear set transmission.

2. The high and low voltage partitioning isolation and electromagnetic shielding assembly for the new energy motor controller housing as described in claim 1, characterized in that: The shielding shell is fixed with heat dissipation fins on the outside. The bottom surface of the shielding shell is provided with two isolation plates on the left and right sides in the middle to isolate the high-voltage area and the low-voltage area. The shielding shell is provided with a mounting plate above the high-voltage area and the low-voltage area. The edge of the mounting plate abuts against the inner wall of the shielding shell, and the bottom surface of the mounting plate abuts against the top surface of the isolation plate. Two support plates are symmetrically fixed on the left and right sides near the middle of the mounting plate for installing the trigger structure.

3. The high and low voltage partition isolation and electromagnetic shielding assembly for the housing of the new energy motor controller as described in claim 2, characterized in that: The top of the main water pipe extends through the top surface of the shielding shell. The main water pipe is located on the outer wall of the shielding shell and is fixed with installation buckets on both sides. The inner end of the connecting pipe is fixed at the connection point between the corresponding installation bucket and the main water pipe. The connecting pipe is a high-temperature resistant silicone rubber hose.

4. The high and low voltage partition isolation and electromagnetic shielding assembly for the housing of the new energy motor controller as described in claim 3, characterized in that: The heat exchange tubes are arranged in a serpentine pattern above the mounting plate, and the outer ends of the heat exchange tubes extend through the corresponding sidewall of the shielding shell. The heat exchange tubes and the main water pipe are connected by the same coolant circulation system.

5. The high and low voltage partitioning isolation and electromagnetic shielding assembly for the new energy motor controller housing as described in claim 4, characterized in that: The adjustment structure is set in the mounting bucket on the corresponding side. A fixing plate is coaxially fixed inside the mounting bucket. A rotating ring is provided on the outer side of the fixing plate. An opening for the connecting pipe to pass through is provided in the middle of the fixing plate. Several locking blocks are fixed near the edge of the fixing plate. Several locking block slots are provided on the rotating ring, which correspond one-to-one with the locking blocks.

6. The high and low voltage partition isolation and electromagnetic shielding assembly for the housing of the new energy motor controller as described in claim 5, characterized in that: The extrusion plate is triangular in shape. The rotating ring is connected to the extrusion plates by a number of push rods. The outer end of the push rod is hinged to the rotating ring. The first counterclockwise end of the extrusion plate is hinged to the inner end of the push rod. The push rod is bent clockwise from the inside to the outside. The second counterclockwise end of the extrusion plate is rotatably connected to the fixed plate.

7. The high and low voltage partition isolation and electromagnetic shielding assembly for the housing of the new energy motor controller as described in claim 6, characterized in that: The connecting sleeve extends through the mounting plate from top to bottom. A heat-conducting plate is fixed to the bottom surface of the connecting sleeve. The top surface of the heat-conducting plate is fixed to the bottom end of the memory metal part. Flange plates are symmetrically fixed to the outer wall of the push rod. A flange plate groove adapted to the flange plate is provided inside the connecting sleeve. The flange plate and the flange plate groove are slidably connected to prevent the push rod from rotating.

8. The high and low voltage partition isolation and electromagnetic shielding assembly for the housing of the new energy motor controller as described in claim 7, characterized in that: The inner end of the crossbar is fixed coaxially with the central shaft of the gear on the left side. The crossbar is located on the front side of the central shaft of the gear on the left side. A transmission rod is fixed coaxially on the inner side of the gear. Two transmission rods pass through the support plates on the corresponding sides. The two transmission rods are rotatably connected to the support plates on the corresponding sides respectively. The inner ends of the two transmission rods are connected by the gear set.

9. The high and low voltage partition isolation and electromagnetic shielding assembly for the housing of a new energy motor controller as described in claim 8, characterized in that: A fixing sleeve is fixed to the inner side wall of the support plate on the left side. The transmission rod on the left side passes through the fixing sleeve. A torsion spring is provided between the transmission rod on the left side and the fixing sleeve. The inner end of the torsion spring is fixed to the transmission rod on the left side, and the other end is fixed to the fixing sleeve.

10. The application of high and low voltage partition isolation and electromagnetic shielding components for the housing of a new energy motor controller, as described in claim 9, is characterized in that: It is used in the housing of new energy motor controllers.

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