Plastic shell with heat dissipation water channel for new energy automobile

Abstract

The invention discloses a plastic shell with a heat dissipation water channel for a new energy automobile, and relates to the technical field of new energy automobiles, the plastic shell comprises a plastic shell body, a packaging groove and a water cooling groove are formed in the plastic shell body, and the water cooling groove is located on the back face of the packaging groove; a capacitor core, a capacitor positive electrode leading-out copper bar and a capacitor negative electrode leading-out copper bar are packaged in the packaging groove through epoxy resin, a water inlet and a water outlet which are communicated with the water cooling groove are formed in the plastic shell body, a first adjusting mechanism is arranged on the water inlet, and a second adjusting mechanism is arranged on the water outlet. According to the plastic shell with the heat dissipation water channel for the new energy automobile, by arranging the heat dissipation mechanism, the heat transfer efficiency and the heat dissipation effect are improved, and the problems that in the prior art, heat dissipation only depends on the water channel of the shell, heat cannot be evenly conducted to the water channel of the shell to be taken away by cooling liquid, local heat accumulation occurs, and heat dissipation is poor are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, in particular to a plastic shell with a heat dissipation water channel for new energy vehicles. Background Art

[0002] New energy vehicles refer to vehicles that use new power systems and are completely or mainly driven by new energy. Compared with traditional fuel vehicles, new energy vehicles have the characteristics of low emissions or zero emissions and are more environmentally friendly.

[0003] As an important component of key parts such as new energy vehicle motor drive systems and power conversion circuits, capacitors play a key role in smoothing DC bus voltage and absorbing high-frequency ripple current. In order to ensure the stable and reliable operation of the entire power system, it is necessary to ensure that the capacitor can work normally under high temperature conditions. The plastic case is the shell of the encapsulated capacitor.

[0004] Under the operating conditions of new energy vehicles such as frequent starting, acceleration, and braking, a large amount of heat will be generated inside the capacitor, causing the internal temperature of the capacitor to be too high, thereby affecting the electrical performance of the capacitor. To solve the heat dissipation problem of the capacitor, the current heat dissipation solution on the market is to use an aluminum shell with water channels, which uses the thermal conductivity of aluminum and the water channels of the shell to dissipate heat.

[0005] However, the existing device has the following shortcomings during use: In the prior art, heat is dissipated only by the water channel of the outer shell. In the process of heat being transferred from the inside of the capacitor to the outer shell and then to the coolant in the water channel, the heat cannot be evenly conducted to the water channel of the outer shell to be carried away by the coolant, and local heat accumulation will occur, resulting in poor heat dissipation, which affects the long-term stable operation of the capacitor within the appropriate temperature range.

[0006] Therefore, we propose a plastic shell with heat dissipation water channels for new energy vehicles to solve the above problems. Summary of the invention

[0007] The object of the present invention is to provide a plastic shell with a heat dissipation water channel for new energy vehicles. By setting a heat dissipation mechanism, the baffle plate in the water cooling tank divides it into multiple diversion channels, thereby optimizing the flow path of the coolant and extending the contact time between the coolant and the plastic shell body. At the same time, the heat sink can increase the heat dissipation area, and the silicone oil in the fixed cylinder can drive the heat sink to move its position as the temperature changes, thereby making certain changes to the flow path of the coolant, so that the coolant can fully contact with the plastic shell body, so as to solve the problems raised by the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a plastic shell with a heat dissipation water channel for a new energy vehicle, comprising a plastic shell body, a packaging groove and a water cooling groove are arranged on the plastic shell body, the water cooling groove is located on the back of the packaging groove, the packaging groove is encapsulated with a capacitor core, a capacitor positive electrode lead copper bar and a capacitor negative electrode lead copper bar by epoxy resin, the plastic shell body is provided with a water inlet and a water outlet connected to the water cooling groove, the water inlet is provided with a first regulating mechanism, the water outlet is provided with a second regulating mechanism, the first regulating mechanism and the second regulating mechanism have the same structure, and a heat dissipation mechanism is arranged in the water cooling groove; The heat dissipation mechanism includes a baffle plate, which is fixedly connected to the water cooling tank, a fixed cylinder is fixedly connected to one side of the baffle plate, a piston plate is slidably connected to the fixed cylinder, a movable rod is fixedly connected to one end of the piston plate, a heat sink is fixedly sleeved on the outer surface of the movable rod, a return spring is sleeved on the outer surface of the movable rod, and silicone oil is arranged in the fixed cylinder.

[0009] Preferably, the first regulating mechanism comprises a connecting pipe, the connecting pipe is slidably connected in the water inlet, the outer top of the connecting pipe is fixedly connected with a mounting flange, and the outer surface of the water inlet is fixedly connected with a fixing block.

[0010] Preferably, a hollow groove is provided inside the fixing block, a screw is rotatably connected in the hollow groove, a worm wheel is fixedly sleeved on the outer surface of the screw, a worm is rotatably connected in the hollow groove, and the worm is meshingly connected with the worm wheel.

[0011] Preferably, the outer surface of the screw is threadedly connected with a threaded barrel, the top of the threaded barrel movably passes through the empty groove and extends to the outside of the fixed block, a limiting groove is opened on the inner side of the empty groove, a limiting block is slidably connected in the limiting groove, and the limiting block is fixedly connected to the threaded barrel.

[0012] Preferably, a connecting plate is fixedly connected to the outer surface of the connecting pipe, and the bottom of the connecting plate is fixedly connected to the threaded barrel.

[0013] Preferably, the smooth end of the worm movably passes through the empty groove and the fixed block and is fixedly mounted with a rotating handle, the inner surface of the water inlet is fixedly mounted with a first sealing ring, and the bottom end of the connecting pipe is fixedly mounted with a sealing gasket.

[0014] Preferably, one end of the capacitor core is connected to the positive electrode lead-out copper busbar of the capacitor through a wire, and the other end of the capacitor core is connected to the negative electrode lead-out copper busbar of the capacitor through a wire.

[0015] Preferably, a first reinforcing rib is fixedly connected in the packaging groove, and a second reinforcing rib is fixedly connected in the packaging groove.

[0016] Preferably, a mounting groove is provided on the plastic shell body, and a second sealing ring is provided in the mounting groove.

[0017] Preferably, the plastic shell body is made of polymer plastic material, and a mounting hole is provided on the plastic shell body, and the mounting hole is used to install a threaded part to fix the plastic shell body.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention encapsulates the capacitor core in the packaging groove by epoxy resin, which can effectively prevent external dust and moisture from entering the packaging groove, ensuring the normal operation of the capacitor core. By setting a heat dissipation mechanism, the baffle plate in the water cooling groove divides it into multiple diversion channels, prolonging the contact time between the coolant and the plastic shell body, and improving the heat transfer efficiency. At the same time, the heat sink can increase the heat dissipation area, and the organic silicone oil in the fixed cylinder can drive the heat sink to move with the temperature change, which is convenient for making certain changes to the flow path of the coolant, so that the coolant can fully contact with the plastic shell body, improve the heat dissipation effect, and solve the problem of relying solely on the water channel of the shell to dissipate heat in the prior art, so that the heat cannot be evenly conducted to the water channel of the shell to be taken away by the coolant, resulting in local heat accumulation and poor heat dissipation.

[0019] 2. The present invention provides power by rotating the handle through the first adjusting mechanism and the second adjusting mechanism. With the cooperation among the screw, worm gear, worm, threaded barrel, limit groove, limit block and connecting plate, it is easy to adjust the position of the connecting pipe, improves the flexibility and adaptability of installation, makes it convenient to connect with the pipeline of the coolant circulation system, and the sealing structure ensures the sealing and reliability of the connection.

[0020] 3. The present invention adopts a plastic shell body made of high molecular plastic material. Compared with the shell made of aluminum, it has good thermal conductivity and insulation performance, and at the same time has waterproof performance, which is convenient for protecting the internal capacitor elements. The first reinforcing ribs and the second reinforcing ribs in the packaging groove enhance the overall structural strength, effectively prevent the deformation or damage of the plastic shell, protect the internal capacitor elements, and increase the distance between the capacitor core and the water cooling groove to avoid affecting the operation of the capacitor core and increase its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional diagram of the main structure of a plastic shell with a heat dissipation channel for a new energy vehicle of the present invention; Figure 2 This is a bottom structural stereogram of a plastic shell with a heat dissipation water channel for a new energy vehicle of the present invention; Figure 3 This is a structural stereogram of a positive electrode lead-out copper bar of a capacitor in a plastic shell with a heat dissipation water channel for a new energy vehicle of the present invention; Figure 4 This is a structural stereogram of the first reinforcing rib and the second reinforcing rib in a plastic shell with a heat dissipation water channel for a new energy vehicle of the present invention; Figure 5 This is a structural stereogram of a negative electrode lead-out copper bar of a capacitor in a plastic shell with a heat dissipation water channel for a new energy vehicle of the present invention; Figure 6 This is a cross-sectional structural stereogram of a fixing cylinder in a plastic shell with a heat dissipation water channel for a new energy vehicle of the present invention; Figure 7 This is a partial cross-sectional structural stereogram of a water inlet in a plastic shell with a heat dissipation water channel for a new energy vehicle of the present invention; Figure 8 It is a partial cross-sectional structural stereogram of a first adjustment mechanism in a plastic shell with a heat dissipation water channel for a new energy vehicle of the present invention.

[0022] In the figure: 1, plastic shell body; 2, packaging groove; 3, water cooling groove; 4, epoxy resin; 5, capacitor core; 6, capacitor positive lead copper bar; 7, capacitor negative lead copper bar; 8, water inlet; 9, water outlet; 10, first adjustment mechanism; 1001, connecting pipe; 1002, mounting flange; 1003, fixing block; 1004, empty groove; 1005, screw; 1006, worm gear; 1007, worm; 1008, threaded barrel; 1009, limit groove; 1010, Limit block; 1011, connecting plate; 1012, turning handle; 1013, first sealing ring; 1014, sealing gasket; 11, second adjusting mechanism; 12, heat dissipation mechanism; 1201, baffle plate; 1202, fixing cylinder; 1203, piston plate; 1204, movable rod; 1205, heat sink; 1206, reset spring; 1207, silicone oil; 13, first reinforcing rib; 14, second reinforcing rib; 15, mounting groove; 16, second sealing ring; 17, mounting hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] like Figure 1-Figure 8As shown, the present invention provides a technical solution: a plastic shell with a heat dissipation water channel for a new energy vehicle, comprising a plastic shell body 1, a packaging groove 2 and a water cooling groove 3 are arranged on the plastic shell body 1, the water cooling groove 3 is located on the back of the packaging groove 2, the packaging groove 2 is encapsulated with a capacitor core 5, a capacitor positive electrode lead-out copper bar 6 and a capacitor negative electrode lead-out copper bar 7 through an epoxy resin 4, a water inlet 8 and a water outlet 9 connected to the water cooling groove 3 are arranged on the plastic shell body 1, a first regulating mechanism 10 is arranged on the water inlet 8, and a second regulating mechanism 11 is arranged on the water outlet 9, the first regulating mechanism 10 and the second regulating mechanism 11 have the same structure, and a heat dissipation mechanism 12 is arranged in the water cooling groove 3; The heat dissipation mechanism 12 includes a baffle plate 1201, which is fixedly connected to the water cooling tank 3. A fixed cylinder 1202 is fixedly connected to one side of the baffle plate 1201. A piston plate 1203 is slidably connected to the fixed cylinder 1202. A movable rod 1204 is fixedly connected to one end of the piston plate 1203. A heat sink 1205 is fixedly sleeved on the outer surface of the movable rod 1204. A return spring 1206 is sleeved on the outer surface of the movable rod 1204. Silicone oil 1207 is arranged in the fixed cylinder 1202.

[0025] like Figure 7 and Figure 8 As shown, the first adjustment mechanism 10 includes a connecting pipe 1001, which is slidably connected to the water inlet 8. The outer top of the connecting pipe 1001 is fixedly connected with a mounting flange 1002, and the outer surface of the water inlet 8 is fixedly connected with a fixing block 1003. By setting the mounting flange 1002, it is convenient to connect with the pipeline of the external coolant circulation system, thereby ensuring the sealing and reliability of the connection, and facilitating installation, disassembly and maintenance.

[0026] like Figure 7 and Figure 8 As shown, a hollow groove 1004 is provided inside the fixed block 1003, a screw rod 1005 is rotatably connected in the hollow groove 1004, a worm wheel 1006 is fixedly sleeved on the outer surface of the screw rod 1005, a worm 1007 is rotatably connected in the hollow groove 1004, the worm 1007 is meshingly connected with the worm wheel 1006, and the screw rod 1005 can be driven to rotate through the transmission cooperation of the worm wheel 1006 and the worm 1007. This transmission structure has a self-locking feature, and the self-locking feature ensures that after the adjustment is completed, the position of the connecting pipe 1001 can be stably maintained.

[0027] like Figure 8As shown, the outer surface of the screw 1005 is threadedly connected with a threaded barrel 1008, the top of the threaded barrel 1008 movably passes through the empty slot 1004 and extends to the outside of the fixed block 1003, and a limiting slot 1009 is provided on the inner side of the empty slot 1004, and a limiting block 1010 is slidably connected in the limiting slot 1009, and the limiting block 1010 is fixedly connected to the threaded barrel 1008. The movement of the threaded barrel 1008 is limited and guided by the limiting slot 1009 and the limiting block 1010, so that when the screw 1005 rotates, the threaded barrel 1008 can be driven to move, so that it can only move smoothly along the predetermined direction, to prevent deviation or jamming, etc., thereby improving the reliability and service life of the first adjustment mechanism 10.

[0028] like Figure 8 As shown, the outer surface of the connecting tube 1001 is fixedly connected with a connecting plate 1011, and the bottom of the connecting plate 1011 is fixedly connected to the threaded tube 1008. When the threaded tube 1008 moves, the connecting tube 1001 can be driven to move due to the fixed connection between the connecting plate 1011 and the threaded tube 1008, thereby facilitating the adjustment of the position of the connecting tube 1001. The extending length or retracted length of the connecting tube 1001 can be flexibly changed, so that it can better dock with the pipeline of the coolant circulation system. Regardless of whether the installation space is compact or relatively loose, a reliable connection can be achieved, thereby improving the versatility and adaptability of the plastic shell body 1.

[0029] like Figure 7 and Figure 8 As shown, the smooth end of the worm 1007 is movable through the empty groove 1004 and the fixed block 1003 and is fixedly installed with a turning handle 1012, the inner surface of the water inlet 8 is fixedly installed with a first sealing ring 1013, and the bottom end of the connecting pipe 1001 is fixedly installed with a sealing gasket 1014. By setting the turning handle 1012, it is convenient for the operator to manually rotate the worm 1007 to adjust the position of the connecting pipe 1001 without the aid of complex tools, and the operation is simple and convenient. At the same time, the first sealing ring 1013 installed on the inner surface of the water inlet 8 and the sealing gasket 1014 installed on the bottom end of the connecting pipe 1001, the double sealing structure effectively prevents water leakage at the connection. During the coolant circulation process, the coolant leakage is prevented, the pressure stability of the coolant circulation system is ensured, the sealing is improved, and the damage of the capacitor due to water leakage is avoided.

[0030] like Figure 3 and Figure 5As shown, one end of the capacitor core 5 is connected to the capacitor positive lead copper bar 6 through a wire, and the other end of the capacitor core 5 is connected to the capacitor negative lead copper bar 7 through a wire. A complete capacitor circuit structure is formed between the capacitor core 5, the capacitor positive lead copper bar 6 and the capacitor negative lead copper bar 7, so that the capacitor can work normally, store and release electrical energy, ensure the stability and smoothness of power supply, and improve the overall performance and operation reliability of new energy vehicles.

[0031] like Figure 3 and Figure 4 As shown, a first reinforcing rib 13 is fixedly connected in the packaging groove 2, and a second reinforcing rib 14 is fixedly connected in the packaging groove 2. By setting the first reinforcing rib 13 and the second reinforcing rib 14, on the one hand, the overall structural strength is enhanced, and when bearing the weight and stress of the capacitor core 5, the capacitor positive electrode lead copper bus 6, the capacitor negative electrode lead copper bus 7 and the packaging material, the plastic shell body 1 can be effectively prevented from being deformed or damaged, and the integrity and stability of the internal capacitor components can be protected. On the other hand, a certain distance is created between the capacitor core 5 and the water cooling groove 3, which plays a role of physical isolation, avoiding the water cooling groove 3 and the capacitor core 5 from being too close, resulting in corrosion, short circuit and other adverse effects on the capacitor core 5, and ensuring that the capacitor core 5 can work normally in a safe environment.

[0032] like Figure 2 As shown, a mounting groove 15 is provided on the plastic shell body 1, and a second sealing ring 16 is provided in the mounting groove 15. The mounting groove 15 provides an installation position for the second sealing ring 16. The second sealing ring 16 can effectively seal the connection interface between the plastic shell body 1 and the controller module of the new energy electric vehicle when the plastic shell body 1 is installed on the controller module, so as to prevent external impurities such as dust, moisture, corrosive gas, etc. from entering the installation position, avoiding electrical failure or corrosion damage caused by the intrusion of impurities, improving the reliability of the capacitor working in harsh environments, and ensuring the stability and safety of the controller module and the entire new energy vehicle electrical system.

[0033] like Figure 2As shown, the plastic shell body 1 is made of polymer plastic material, and a mounting hole 17 is provided on the plastic shell body 1. The mounting hole 17 is used to install a screw to fix the plastic shell body 1. The plastic shell body 1 made of polymer plastic material has waterproof performance, which prevents water molecules from penetrating into the packaging groove 2 to affect the normal operation of the capacitor core 5. At the same time, compared with the aluminum shell, the plastic shell body 1 made of polymer plastic material has good thermal conductivity and insulation performance, which can not only meet the electrical insulation requirements, but also effectively conduct the heat generated by the capacitor core 5 to the heat dissipation water channel, which meets the dual requirements of new energy vehicles for electrical safety and heat dissipation performance. The mounting hole 17 is convenient for using a screw to firmly fix the plastic shell body 1 on the controller module of the new energy electric vehicle, ensuring that during the operation of the vehicle, the capacitor can also be stably installed in the specified position without displacement or loosening, thereby ensuring the connection stability between the capacitor and the controller module.

[0034] The use method and working principle of the device: In the preparation stage, the capacitor core 5, the capacitor positive lead copper bar 6 and the capacitor negative lead copper bar 7 are welded to form a capacitor core group, and the welded capacitor core group is assembled into the packaging groove 2 on the plastic shell body 1. After the capacitor core group and the plastic shell body 1 are installed and fixed, the capacitor core group and the plastic shell body 1 are encapsulated into a whole using epoxy resin 4.

[0035] During the installation phase, the second sealing ring 16 is installed in the installation groove 15, and the plastic shell body 1 is fixedly installed on the controller module of the new energy electric vehicle by using the installation hole 17 and the threaded member. Then, the worm 1007 is driven to rotate by rotating the handle 1012. Since the worm 1007 and the worm wheel 1006 are meshed and connected, the worm wheel 1006 drives the screw 1005 to rotate. At the same time, the limit block 1010 limits the threaded barrel 1008, so that when the screw 1005 rotates, it drives the threaded barrel 1008 to move upward, and the threaded barrel 1008 The limit block 1010 is driven to slide upward in the limit groove 1009 synchronously, so that the threaded tube 1008 drives the connecting plate 1011 to move upward, and then the connecting plate 1011 drives the connecting pipe 1001 to slide upward in the water inlet 8, so that the position of the connecting pipe 1001 can be adjusted. Similarly, through the first adjusting mechanism 10 and the second adjusting mechanism 11 having the same structure, the pipeline on the second adjusting mechanism 11 can be adjusted. After the adjustment is completed, the installation flange 1002 is used to connect it to the pipeline of the coolant circulation system.

[0036] In the heat dissipation stage, when the new energy vehicle is started, the capacitor starts to work, and the capacitor core 5 generates heat during the electrical process such as charging and discharging. The heat is transferred to the plastic shell body 1 through heat conduction, so that the heat is further transferred to the water cooling tank 3. At the same time, the external cooling circulation system drives the coolant to flow into the water cooling tank 3 from the water inlet 8. At the same time, a plurality of baffles 1201 are provided, and the baffles 1201 divide the water cooling tank 3 into a plurality of shunt channels. The plurality of spaced baffles 1201 are arranged parallel to each other, and the spacing between the baffles 1201 is the same, so that the coolant has a uniform flow rate when passing through the shunt channel, so that the coolant can gradually flow to the water outlet 9 in the plurality of continuously connected shunt channels, so that the plastic shell body 1 can transfer the absorbed heat to the coolant better, and the heat sink 1205 can increase the heat dissipation area during the flow of the coolant, and the silicone oil 1207 provided at the same time will expand or When the temperature rises, the silicone oil 1207 expands and pushes the piston plate 1203 to slide in the fixed cylinder 1202. When the piston plate 1203 slides, it drives the movable rod 1204 to move. The movement of the movable rod 1204 drives the heat sink 1205 to move. At this time, the reset spring 1206 is squeezed and begins to shrink. When the temperature drops, the silicone oil 1207 shrinks. Under the action of the elastic potential energy of the reset spring 1206, the movable rod 1204 drives the heat sink 1205 to reset. During the movement of the heat sink 1205, the flow path of the coolant is changed to a certain extent, so that the coolant can fully contact the plastic shell body 1 and absorb heat. Finally, the coolant carries the heat out from the water outlet 9, returns to the external cooling circulation system for heat dissipation and cooling, and then circulates into the water cooling tank 3 again. In this way, the heat inside the capacitor is continuously taken out to maintain the capacitor within a suitable operating temperature range.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plastic shell with a heat dissipation channel for new energy vehicles, characterized in that: The invention comprises a plastic shell body (1), wherein the plastic shell body (1) is provided with a packaging groove (2) and a water cooling groove (3), wherein the water cooling groove (3) is located on the back of the packaging groove (2), wherein the packaging groove (2) is provided with a capacitor core (5), a capacitor positive electrode lead-out copper bar (6) and a capacitor negative electrode lead-out copper bar (7) by epoxy resin (4), wherein the plastic shell body (1) is provided with a water inlet (8) and a water outlet (9) connected to the water cooling groove (3), wherein the water inlet (8) is provided with a first regulating mechanism (10), and the water outlet (9) is provided with a second regulating mechanism (11), wherein the first regulating mechanism (10) and the second regulating mechanism (11) have the same structure, and wherein a heat dissipation mechanism (12) is provided in the water cooling groove (3); The heat dissipation mechanism (12) comprises a baffle plate (1201), the baffle plate (1201) being fixedly connected to the water cooling tank (3), a fixed cylinder (1202) being fixedly connected to one side of the baffle plate (1201), a piston plate (1203) being slidably connected to the inside of the fixed cylinder (1202), a movable rod (1204) being fixedly connected to one end of the piston plate (1203), a heat sink (1205) being fixedly sleeved on the outer surface of the movable rod (1204), a return spring (1206) being sleeved on the outer surface of the movable rod (1204), and organic silicone oil (1207) being arranged in the fixed cylinder (1202).

2. A plastic shell with a heat dissipation channel for a new energy vehicle according to claim 1, characterized in that: The first regulating mechanism (10) comprises a connecting pipe (1001), the connecting pipe (1001) being slidably connected in the water inlet (8), the outer top of the connecting pipe (1001) being fixedly connected to a mounting flange (1002), and the outer surface of the water inlet (8) being fixedly connected to a fixing block (1003).

3. A plastic shell with a heat dissipation channel for a new energy vehicle according to claim 2, characterized in that: An empty slot (1004) is provided inside the fixed block (1003), a screw rod (1005) is rotatably connected inside the empty slot (1004), a worm wheel (1006) is fixedly sleeved on the outer surface of the screw rod (1005), a worm (1007) is rotatably connected inside the empty slot (1004), and the worm (1007) is meshingly connected to the worm wheel (1006).

4. A plastic shell with a heat dissipation channel for a new energy vehicle according to claim 3, characterized in that: The outer surface of the screw rod (1005) is threadedly connected to a threaded barrel (1008), the top of the threaded barrel (1008) movably passes through the empty slot (1004) and extends to the outside of the fixed block (1003), a limiting slot (1009) is provided on the inner side of the empty slot (1004), a limiting block (1010) is slidably connected in the limiting slot (1009), and the limiting block (1010) is fixedly connected to the threaded barrel (1008).

5. A plastic shell with a heat dissipation channel for a new energy vehicle according to claim 4, characterized in that: A connecting plate (1011) is fixedly connected to the outer surface of the connecting pipe (1001), and the bottom of the connecting plate (1011) is fixedly connected to the threaded cylinder (1008).

6. The plastic shell with heat dissipation channels for new energy vehicles according to claim 3, characterized in that: The smooth end of the worm (1007) movably penetrates the empty groove (1004) and the fixed block (1003) and is fixedly mounted with a rotating handle (1012); a first sealing ring (1013) is fixedly mounted on the inner surface of the water inlet (8); and a sealing pad (1014) is fixedly mounted on the bottom end of the connecting pipe (1001).

7. The plastic shell with heat dissipation channels for new energy vehicles according to claim 1, characterized in that: One end of the capacitor core (5) is connected to the capacitor positive electrode lead copper bus (6) through a wire, and the other end of the capacitor core (5) is connected to the capacitor negative electrode lead copper bus (7) through a wire.

8. The plastic shell with heat dissipation channels for new energy vehicles according to claim 1, characterized in that: A first reinforcing rib (13) is fixedly connected inside the packaging groove (2), and a second reinforcing rib (14) is fixedly connected inside the packaging groove (2).

9. The plastic shell with heat dissipation channels for new energy vehicles according to claim 1, characterized in that: The plastic shell body (1) is provided with a mounting groove (15), and a second sealing ring (16) is provided in the mounting groove (15).

10. The plastic shell with heat dissipation channels for new energy vehicles according to claim 1, characterized in that: The plastic shell body (1) is made of a polymer plastic material, and a mounting hole (17) is provided on the plastic shell body (1), wherein the mounting hole (17) is used to install a threaded part to fix the plastic shell body (1).

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