A cooling system for a drive motor of a new energy vehicle

Abstract

The application relates to the technical field of new energy vehicles, and discloses a cooling system for a driving motor of a new energy vehicle, which comprises a new energy vehicle inner box, a driving motor, a motor controller, an expansion water tank, an electric water pump and a radiator are sequentially arranged in the new energy vehicle inner box, water pipes are connected between the driving motor, the motor controller, the expansion water tank, the electric water pump and the radiator, two embedded holes are arranged on the back of the radiator, and a fan is arranged on one side of the two embedded holes. The cooling system for the driving motor of the new energy vehicle is provided with a clamping component, a reset component and a dislocation component, when a staff member replaces the fan on the radiator by opening a new energy vehicle front cover, one of the fans needs to be removed, a rotating block is rotated, one side of a groove of the rotating block faces the direction in which the fan needs to be removed, under the action of spring sheets and sliding sheets, a moving bent plate part is moved by a distance on the bottom surface of the groove, and finally the two ends of the moving bent plate part are completely separated from positioning grooves and are retracted into the inside of a through hole.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, specifically to a cooling system for a drive motor of a new energy vehicle. Background Technology

[0002] New energy vehicles refer to automobiles that use unconventional vehicle fuels as their power source and integrate advanced technologies in vehicle power control and drive, resulting in vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles include four main types: hybrid electric vehicles, pure electric vehicles, fuel cell electric vehicles, and other new energy vehicles. Unconventional vehicle fuels refer to fuels other than gasoline and diesel. The drive motor, electronic control system, and power battery are the three core components of new energy vehicles. During operation, these components generate a large amount of heat, which can damage the vehicle's power system if not cooled in time. The cooling system for the drive motor consists of the drive motor, motor controller, expansion tank, electric water pump, and radiator connected by water pipes. Cooling water or other liquids are injected into the pipes to exchange heat with the drive motor, which is then transferred to the radiator and cooled by an electric fan, thus achieving a cooling effect on the drive motor.

[0003] The invention patent with application number CN202010337414.9 discloses a cooling system for a drive motor in new energy vehicles. Based on the requirements for miniaturization and lightweighting of drive motors in new energy vehicles, this application proposes a cooling scheme where the coolant directly contacts the stator core and the ends of the stator windings. This application eliminates the additional cooling shell used in conventional drive motor cooling systems, thereby improving cooling capacity and reducing motor size. Based on the reliability requirements of drive motors in new energy vehicles, in this application, the stator is made of stacked iron core laminations, which ensures uniform coolant distribution and reduces coolant flow resistance. The cooling structure for the ends of the stator windings consists of a guide shroud and a reservoir shroud. This cooling structure uses open cooling, requiring no strict sealing and eliminating the risk of blockage. The combination of these two elements improves the reliability of the cooling system. Based on the low-cost requirements of drive motors in new energy vehicles, this application uses a direct cooling structure formed by staggered stacking of iron core laminations, eliminating the need for additional stator processing. Furthermore, the proposed direct stator cooling structure only requires… The system uses a maximum of two different core laminations and does not require a separate cooling housing, resulting in a simpler mechanical structure and no additional processing requirements for molds. Cooling structures at the stator winding ends (such as shrouds and accumulators) have more flexible material requirements and lower processing precision requirements. While the combination of these two aspects can reduce costs, solving the problems of "reducing the size and weight of the drive motor, improving the cooling capacity and reliability of the cooling system, and reducing the cost of the cooling system," the cooling system for the drive motor uses an electric fan mounted on the radiator. Most electric fans used in passenger vehicles are brushed cooling fans, which have short lifespans and poor durability due to the presence of carbon brushes. Therefore, they need to be disassembled and replaced periodically. Since the space after installing the drive motor and cooling system in some new energy vehicles is limited, workers may need to disassemble multiple components of the new energy vehicle before using tools to replace the electric fan, leaving sufficient space for complete disassembly. Therefore, a cooling system for drive motors in new energy vehicles is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a cooling system for a drive motor in a new energy vehicle, in order to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a cooling system for a drive motor of a new energy vehicle, comprising a new energy vehicle inner box, wherein a drive motor, a motor controller, an expansion tank, an electric water pump and a radiator are sequentially installed inside the new energy vehicle inner box, and water pipes are connected between them; two embedding holes are opened on the back of the radiator, and a fan is provided on one side of the two embedding holes; the front end of the fan is engaged with the inner cavity of the embedding hole; an L-shaped mounting plate is fixedly connected to the bottom of the rear end of the fan; a pair of positioning grooves are opened in the middle of the outer wall of the L-shaped mounting plate; a through hole is opened in the top of the outer wall of the L-shaped mounting plate; and a locking component and a resetting component are sequentially arranged between the two L-shaped mounting plates.

[0006] The top of the locking assembly is provided with a fixing block, the front end of the fixing block is fixedly connected to the surface of the heat sink, a moving hole is provided on one side wall of the fixing block, a connecting hole is provided in the middle of the rear end of the fixing block, an anti-accidental disengagement component is provided in the inner cavity of the moving hole, and an operating component is provided on one side of the connecting hole.

[0007] A disengagement assembly is provided in the middle of the inner side of the L-shaped mounting plate. The disengagement assembly includes a connecting block that is fixedly connected to the inner surface of the L-shaped mounting plate. A fixing rod is fixedly connected to one side wall of the connecting block. An inner cylinder is provided on one side of the fixing rod. The inner cylinder is fixedly connected to the surface of the radiator. A movable disc is slidably connected to the inner cavity of the inner cylinder. A spring is connected between the movable disc and the inner wall of the inner cylinder.

[0008] Preferably, the mounting component includes a mounting block, the front end of which is fixedly connected to the surface of the heat sink, and a spring groove is provided in the middle of the rear end of the mounting block. A movable circular block is slidably connected to the inner cavity of the spring groove, and a second spring is connected between the front end face of the movable circular block and the inner wall of the spring groove.

[0009] The mounting block is placed between two L-shaped mounting plates. The inner diameter of the spring groove is larger than the diameter of its opening. Under the action of the second spring, the movable circular block can move inside the spring groove and then return to its original position.

[0010] Preferably, a connecting rod is fixedly connected to the rear end face of the movable circular block, one end of the connecting rod extends to the outside of the spring groove and is fixedly connected to a rotating block, and a groove is formed on one side of the surface of the rotating block.

[0011] The diameter of the connecting rod is smaller than the diameter of the spring groove opening. The movable block, connecting rod, and rotating block are in the shape of an "I". The groove is semi-circular, so that one end of the rotating block is semi-circular, so that one or two fans can be released from the limit and disassembled and replaced as needed.

[0012] Preferably, both sides of the mounting block are fixedly connected with U-shaped through plates. A pair of through holes are opened on one side wall of the U-shaped through plate, and a movable bending plate is provided on one side of the U-shaped through plate. The two ends of the movable bending plate respectively movably pass through the inner cavity of the two through holes.

[0013] The two U-shaped insert plates are symmetrically distributed, and the length between the inner walls of the U-shaped insert plates is greater than the thickness of the L-shaped mounting plate. The two through holes are symmetrically distributed and their positions correspond to the positioning grooves. The movable bending plate is U-shaped as a whole, and its two end faces are adapted to the positioning grooves, which facilitates the positioning of the L-shaped mounting plate by moving the bending plate and positioning grooves, that is, the initial positioning of the fan.

[0014] The two U-shaped insert plates are symmetrically distributed, and the length between the inner walls of the U-shaped insert plates is greater than the thickness of the L-shaped mounting plate. The two through holes are symmetrically distributed and their positions correspond to the positioning grooves. The movable bending plate is U-shaped as a whole, and its two end faces are adapted to the positioning grooves, which facilitates the positioning of the L-shaped mounting plate by moving the bending plate and positioning grooves, that is, the initial positioning of the fan.

[0015] Preferably, the reset assembly includes built-in grooves respectively formed on the inner walls of the two through holes at the top, and a sliding piece is slidably connected to the inner cavity of the built-in groove.

[0016] Preferably, a spring plate is connected between the sliding plate and the built-in groove, and the bottom end of the sliding plate is fixedly connected to one end of the movable curved plate.

[0017] This allows the moving bend plate to automatically disengage from the through hole at both ends when the L-shaped mounting plate is positioned and then unlocked.

[0018] Preferably, the anti-accidental disengagement component includes two sliding rods, one end of each sliding rod being slidably connected to both sides of the inner cavity of the moving hole, and a spring connecting the two sliding rods.

[0019] The two sliding rods are symmetrically distributed, with the other end of each sliding rod placed outside the moving hole. Under the action of spring three, the two sliding rods can automatically retract to the inside of the moving hole after moving in opposite directions and losing their force.

[0020] Preferably, a connecting plate is fixedly connected to one end of the sliding rod located outside the moving hole, and a locking rod is fixedly connected to the bottom of one side wall of the connecting plate, with one end of the locking rod movably penetrating through the inner cavity of the through hole.

[0021] The locking rod is horizontally positioned and corresponds to the through hole. This adds an extra layer of safety by positioning the L-shaped mounting plate through the positioning groove on the basis of the moving bending plate, in order to prevent the fan from accidentally falling off due to human factors or other reasons.

[0022] Preferably, a wedge block is fixedly connected to the portion of the sliding rod placed inside the moving hole, and one side of the wedge block movably penetrates the inner cavity of the connecting hole to the outside of the fixed block.

[0023] Preferably, the operating component includes sliding limiting plates fixed to both sides of the rear end of the fixed block, a movable pushing plate movably interspersed on the surface of the sliding limiting plate, a rectangular top block fixedly connected to the middle of the front end of the movable pushing plate, and a limiting stop plate fixedly connected to one end of the sliding limiting plate.

[0024] The two sliding limit plates are symmetrically distributed and set laterally. The two corners of the rectangular top block correspond to the positions of the two wedge blocks to prevent the movable push plate from detaching from the sliding limit plates and to limit the movable push plate.

[0025] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0026] Firstly, this invention, by setting up a locking component, a resetting component, and a disengaging component, allows workers to remove one fan when replacing the radiator fan on a new energy vehicle's hood. By rotating the rotating block so that one side of its groove faces the direction of the fan to be removed, and under the action of the spring and sliding plate, the movable bending plate moves a distance against the bottom of the groove, ultimately causing both ends of the movable bending plate to completely disengage from the positioning groove and retract into the through hole. This releases the restriction on one fan, allowing it to be removed. Simultaneously, the rotating block can be pressed to move it towards the mounting block, disengaging it from both movable bending plates, thus releasing the restriction on both fans for simultaneous removal. At the same time the fans are released from their restriction, under the action of the spring and the movable disc, a portion of the L-shaped mounting plate is ejected from the inside of the U-shaped insert plate via the connecting block. This allows workers to disassemble and install single or two fans in relatively confined spaces without tools, avoiding the time wasted by disassembling too many parts to allow for operation before removing the fans. It also improves the efficiency and convenience of fan disassembly and installation to a certain extent.

[0027] Secondly, by setting up anti-mis-disengagement components and operating components, this invention enables the movable push plate to move after the fan is installed, causing the rectangular top block to disengage from the two wedge blocks. Under the action of spring three, the sliding rod and connecting plate drive the locking rod to move relative to each other, eventually moving it into the inner cavity of the through hole. This further limits the L-shaped mounting plate, ensuring the fan's stability during the violent shaking of new energy vehicles. It also avoids the problem of both fans disengaging simultaneously due to accidental operation when staff replace one of the fans later, thus playing a certain auxiliary role. Attached Figure Description

[0028] Figure 1This is a three-dimensional structural diagram of the installation location of the present invention;

[0029] Figure 2 This is a three-dimensional structural diagram of the heat sink of the present invention;

[0030] Figure 3 This is a three-dimensional structural diagram of the heat sink of the present invention disassembled;

[0031] Figure 4 This is a three-dimensional structural diagram of the dislocation component of the present invention.

[0032] Figure 5 This is a cross-sectional view of the U-shaped insert plate of the present invention;

[0033] Figure 6 This is a three-dimensional structural diagram of the card slot component of the present invention;

[0034] Figure 7 This is a partial three-dimensional structural schematic diagram of the present invention;

[0035] Figure 8 This is a schematic diagram of the three-dimensional structure of the present invention when partially disassembled.

[0036] The components include: 1. New energy vehicle inner box; 2. Drive motor; 3. Motor controller; 4. Expansion tank; 5. Electric water pump; 6. Radiator; 7. Embedded hole; 8. Fan; 9. L-shaped mounting plate; 10. Positioning groove; 11. Through hole; 12. Locking assembly; 121. Mounting block; 122. Spring groove; 123. Movable round block; 124. Spring II; 125. Connecting rod; 126. Rotating block; 127. U-shaped insert plate; 128. Through hole; 129. Moving bent plate; 13. Reset assembly; 131. Built-in groove; 1 32. Sliding plate; 133. Spring plate; 14. Fixing block; 15. Moving hole; 16. Connecting hole; 17. Anti-accidental disengagement component; 171. Sliding rod; 172. Spring three; 173. Connecting plate; 174. Locking rod; 175. Wedge block; 18. Operating component; 181. Sliding limit plate; 182. Movable push plate; 183. Rectangular top block; 184. Limiting stop plate; 19. Disengagement component; 191. Connecting block; 192. Fixing rod; 193. Internal cylinder; 194. Moving disc; 195. Spring one. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1

[0039] Please see Figure 1-8 A cooling system for a drive motor in a new energy vehicle includes a new energy vehicle inner casing 1. Inside the inner casing 1, a drive motor 2, a motor controller 3, an expansion tank 4, an electric water pump 5, and a radiator 6 are sequentially installed, connected by water pipes. These are existing technologies and are the main components of the cooling system, so further details are omitted. The radiator 6 has two symmetrically distributed recessed holes 7 on its back, exposing the flat tube at the front end of the radiator 6 at its rear end. A fan 8 is located on one side of each recessed hole 7. The electronic fan, specifically a brushed cooling fan, has its front end engaged with the inner cavity of the embedded hole 7, allowing the fan 8 to blow directly onto the flat tube at the front end of the heat sink 6, thereby dissipating the coolant flowing inside. An L-shaped mounting plate 9 is fixedly connected to the bottom of the rear end of the fan 8. The L-shaped mounting plates 9 mounted on the two fans 8 are symmetrically distributed. A pair of positioning grooves 10 are provided in the middle of the outer wall of the L-shaped mounting plate 9, and a through hole 11 is provided at the top of the outer wall of the L-shaped mounting plate 9. A locking component 12 and a reset component 13 are arranged sequentially between the two L-shaped mounting plates 9.

[0040] The mounting block 12 includes a mounting block 121. The front end of the mounting block 121 is fixedly connected to the surface of the heat sink 6. The mounting block 121 is placed between two L-shaped mounting plates 9. A spring groove 122 is provided in the middle of the rear end of the mounting block 121. The inner diameter of the spring groove 122 is larger than the diameter of its opening. A movable circular block 123 is slidably connected to the inner cavity of the spring groove 122. A second spring 124 is connected between the front end face of the movable circular block 123 and the inner wall of the spring groove 122. Under the action of the second spring 124, the movable circular block 123 can move inside the spring groove 122 and then return to its original position.

[0041] A connecting rod 125 is fixedly connected to the rear end face of the movable circular block 123. One end of the connecting rod 125 extends to the outside of the spring groove 122 and is fixedly connected to a rotating block 126. The diameter of the connecting rod 125 is smaller than the diameter of the opening of the spring groove 122. The movable circular block 123, the connecting rod 125 and the rotating block 126 are in the shape of an "I". A groove is provided on one side of the surface of the rotating block 126. The groove is semi-circular, so that one end face of the rotating block 126 is semi-circular, so that one or two fans 8 can be released from the limit and disassembled and replaced as needed.

[0042] Both sides of the mounting block 121 are fixedly connected with U-shaped through plates 127. The two U-shaped through plates 127 are symmetrically distributed. The length between the inner walls of the U-shaped through plates 127 is greater than the thickness of the L-shaped mounting plate 9. A pair of through holes 128 are opened on one side wall of the U-shaped through plate 127. The two through holes 128 are symmetrically distributed and their positions correspond to the positioning groove 10. A movable bending plate 129 is provided on one side of the U-shaped through plate 127. The movable bending plate 129 is U-shaped in general. Its two end faces are adapted to the positioning groove 10. The two ends of the movable bending plate 129 respectively move through the inner cavity of the two through holes 128, so as to facilitate the positioning of the L-shaped mounting plate 9 through the movable bending plate 129 and the positioning groove 10, that is, the initial positioning of the fan 8.

[0043] The reset assembly 13 includes built-in grooves 131 respectively opened on the inner wall of the two through holes 128 at the top. The built-in grooves 131 are placed on the upper part of the portion of the movable bent plate 129 that passes through the through holes 128. A sliding piece 132 is slidably connected to the inner cavity of the built-in groove 131. The friction between the sliding piece 132 and the built-in groove 131 is small, which prevents the two ends of the movable bent plate 129 from disengaging from the through holes 128 and plays a limiting role.

[0044] A spring plate 133 is connected between the sliding plate 132 and the built-in groove 131. The bottom end of the sliding plate 132 is fixedly connected to one end of the movable bending plate 129 so that when the movable bending plate 129 moves to position the L-shaped mounting plate 9 and is then unlocked, both ends of the movable bending plate 129 will automatically disengage from the through hole 128.

[0045] The specific implementation method of this embodiment is as follows: When the staff opens the front cover of the new energy vehicle to replace the fan 8 on the radiator 6, and the staff only needs to remove one of the fans 8, the rotating block 126 can be rotated so that one side of its groove faces the direction of the fan 8 to be removed. As a result, under the action of the spring plate 133 and the sliding plate 132, the sliding plate 132 slides in the inner cavity of the built-in groove 131, so that the movable bending plate 129 moves a certain distance against the bottom surface of the groove. After it is in contact with the inner wall of one side of the groove, the two ends of the movable bending plate 129 completely disengage from the positioning groove 10 and retract into the interior of the through hole 128, releasing the positioning of the L-shaped mounting plate 9. Therefore, one of the fans 8 can be removed and replaced. At the same time, the rotating block 126 can be pressed, which will compress the spring 124 and move the rotating block 126 towards the mounting block 121, eventually disengaging from the two moving bending plates 129. In this way, both fans 8 can be removed from their positions at the same time for disassembly. This allows for the replacement of one or both fans 8 at the same time, greatly facilitating the disassembly of one or both fans 8 by the staff. It also makes it easier to disassemble and assemble the fans 8 in a confined space, making the operation more convenient and efficient for the staff.

[0046] Example 2

[0047] Please see Figure 1-8 The top of the locking component 12 is provided with a fixing block 14. The front end of the fixing block 14 is fixedly connected to the surface of the heat sink 6. A moving hole 15 is provided on one side wall of the fixing block 14. The moving hole 15 is a round hole. The moving hole 15 makes the fixing block 14 hollow. A connecting hole 16 is provided in the middle of the rear end of the fixing block 14. The inner cavity of the connecting hole 16 is connected to the inner cavity of the moving hole 15, thereby exposing part of the inner cavity of the moving hole 15 to the outside for subsequent operation. An anti-disengagement component 17 is provided in the inner cavity of the moving hole 15. An operating component 18 is provided on one side of the connecting hole 16.

[0048] The anti-misalignment component 17 includes two sliding rods 171, which are symmetrically distributed. One end of each sliding rod 171 is slidably connected to both sides of the inner cavity of the moving hole 15, and the other end of each sliding rod 171 is placed outside the moving hole 15. A spring 172 is connected between the two sliding rods 171. Under the action of the spring 172, the two sliding rods 171 will automatically retract to the inside of the moving hole 15 after moving in opposite directions under force and losing force.

[0049] A connecting plate 173 is fixedly connected to one end of the sliding rod 171 located outside the moving hole 15. A locking rod 174 is fixedly connected to the bottom of one side wall of the connecting plate 173. The locking rod 174 is horizontally arranged and its position corresponds to the through hole 11. One end of the locking rod 174 moves through the inner cavity of the through hole 11. On the basis of the moving bent plate 129 positioning the L-shaped mounting plate 9 through the positioning groove 10, an additional layer of safety is added to avoid the fan 8 from accidentally falling off due to human factors.

[0050] The portion of the sliding rod 171 located in the inner cavity of the moving hole 15 is fixedly connected to a wedge block 175. The opposite side of the two wedge blocks 175 is an inclined surface. One side of the wedge block 175 can move through the inner cavity of the connecting hole 16 to the outside of the fixed block 14, so that the two sliding rods 171 can move in opposite directions through the wedge block 175.

[0051] The operating component 18 includes two sliding limit plates 181 fixed to the rear ends of the fixed block 14. The two sliding limit plates 181 are symmetrically distributed and arranged laterally. A movable push plate 182 is movably inserted on the surface of the sliding limit plate 181. A rectangular top block 183 is fixedly connected to the middle of the front end of the movable push plate 182. The two corners of the rectangular top block 183 correspond to the positions of the two wedge blocks 175. A limit plate 184 is fixedly connected to one end of the sliding limit plate 181 to prevent the movable push plate 182 from detaching from the sliding limit plate 181 and to limit the movable push plate 182.

[0052] The specific implementation of this embodiment is as follows: After the fan 8 is initially positioned by the moving bending plate 129 and the positioning groove 10 limiting the L-shaped mounting plate 9, the operator can pull the movable pushing plate 182 away from the fixed block 14 by hand, so that the two corners of the rectangular top block 183 are disengaged from the inclined surfaces of the two wedge blocks 175. At this time, under the action of the spring 172, the two sliding rods 171 retract towards the inside of the moving hole 15. Thus, the locking rod 174 is driven to move relative to the connecting plate 173, and finally moves to the inner cavity of the through hole 11, further limiting the L-shaped mounting plate 9. This ensures the firmness of the fan 8 during the violent shaking of the new energy vehicle, and also avoids the problem of the two fans 8 falling off at the same time due to misoperation when the operator replaces one of the fans 8. It plays a certain auxiliary role.

[0053] Example 3

[0054] Please see Figure 1-8 A disengagement assembly 19 is provided in the middle of the inner side of the L-shaped mounting plate 9. The disengagement assembly 19 includes a connecting block 191 fixedly connected to the inner surface of the L-shaped mounting plate 9. The connecting block 191 is located at the included angle of the L-shaped mounting plate 9 and is specifically a round block. A fixing rod 192 is fixedly connected to one side wall of the connecting block 191. The fixing rod 192 is arranged horizontally. An inner cylinder 193 is provided on one side of the fixing rod 192. When the fan 8 is installed, one end of the fixing rod 192 is placed in the inner cavity of the inner cylinder 193 and contacts the movable disc 194. The inner cylinder 193 is fixedly connected to the surface of the heat sink 6. The movable disc 194 is slidably connected to the inner cavity of the inner cylinder 193. A spring 195 is connected between the movable disc 194 and the inner wall of the inner cylinder 193 so that after the movable disc 194 is moved by force, the L-shaped mounting plate 9 can be disengaged and moved outward a certain distance by the fixing rod 192 after the force is lost.

[0055] The specific implementation method of this embodiment is as follows: When the staff releases the two limiting positions of the L-shaped mounting plate 9 on the fan 8, since the fan 8 is in the installed state, one end of the fixing rod 192 is placed in the inner cavity of the inner tube 193, which pushes the moving disc 194 inward, so that the spring 195 is in a compressed state. Therefore, after the L-shaped mounting plate 9 is released, a part of the L-shaped mounting plate 9 pops out from the inside of the U-shaped insert plate 127, so that the staff can pick it up, which plays a certain auxiliary role.

[0056] Example 4

[0057] Please see Figure 1-8The specific implementation method of this embodiment is as follows: First, when the staff opens the front cover of the new energy vehicle to replace the fan 8 on the radiator 6, and the staff only needs to remove one of the fans 8, the rotating block 126 can be rotated so that one side of its groove faces the direction of the fan 8 to be removed. Thus, under the action of the spring plate 133 and the sliding plate 132, the sliding plate 132 slides in the inner cavity of the built-in groove 131, so that the moving bent plate 129 moves a distance against the bottom surface of the groove. After it is in contact with the inner wall of one side of the groove, the two ends of the moving bent plate 129 completely disengage from the positioning groove 10 and retract into the through hole 128, releasing the positioning of the L-shaped mounting plate 9. Therefore, one of the fans 8 can be removed for replacement. At the same time, the rotating block 126 can be pressed, so that the spring 124 is compressed, and the rotating block 126 moves towards the mounting block 121, and finally disengages from the two moving bent plates 129. In this way, both fans 8 can be released from the limit at the same time for disassembly. Second, While the staff releases the two limiting positions of the L-shaped mounting plate 9 on the fan 8, because the fan 8 is in the installed state, one end of the fixing rod 192 is placed in the inner cavity of the inner cylinder 193, pushing the moving disc 194 inward, thereby causing the spring 195 to be in a compressed state. Therefore, after releasing the L-shaped mounting plate 9, a part of the L-shaped mounting plate 9 pops out from the inside of the U-shaped insert plate 127, so that the staff can remove it. Subsequently, the fan 8 moves through the positioning groove 10 via the moving bending plate 129 to fix the L-shaped mounting plate 9. After the mounting plate 9 is used to limit the initial positioning, the operator can pull the movable push plate 182 away from the fixed block 14 by hand, so that the two corners of the rectangular top block 183 are disengaged from the inclined surfaces of the two wedge blocks 175. At this time, under the action of the spring 172, the two sliding rods 171 retract towards the inside of the moving hole 15. In this way, the locking rod 174 is driven to move relative to the connecting plate 173, and finally moves into the inner cavity of the through hole 11, where the L-shaped mounting plate 9 further limits the positioning.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0059] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cooling system for a drive motor of a new energy vehicle, comprising a new energy vehicle inner casing (1), characterized in that: The interior of the new energy vehicle's inner box (1) is sequentially equipped with a drive motor (2), a motor controller (3), an expansion tank (4), an electric water pump (5), and a radiator (6), connected by water pipes. Two embedding holes (7) are opened on the back of the radiator (6), and a fan (8) is installed on one side of each embedding hole (7). The front end of the fan (8) engages with the inner cavity of the embedding hole (7). An L-shaped mounting plate (9) is fixedly connected to the bottom of the rear end of the fan (8). A pair of positioning grooves (10) are opened in the middle of the outer wall of the L-shaped mounting plate (9), and a through hole (11) is opened at the top of the outer wall of the L-shaped mounting plate (9). A locking assembly (12) and a reset assembly (13) are sequentially arranged between the mounting plates (9); the locking assembly (12) includes a mounting block (121), the front end of the mounting block (121) is fixedly connected to the surface of the heat sink (6), a spring groove (122) is provided in the middle of the rear end of the mounting block (121), a movable round block (123) is slidably connected to the inner cavity of the spring groove (122), a spring (124) is connected between the front end face of the movable round block (123) and the inner wall of the spring groove (122), a connecting rod (125) is fixedly connected to the rear end face of the movable round block (123), one end of the connecting rod (125) extends to the outside of the spring groove (122) and is fixedly connected to a rotating block (126), a groove is provided on one side of the surface of the rotating block (126), and U-shaped through plates (127) are fixedly connected to both sides of the mounting block (121). A pair of through holes (128) are provided on one side wall of the U-shaped insert plate (127). A movable bending plate (129) is provided on one side of the U-shaped insert plate (127). The two ends of the movable bending plate (129) respectively movably pass through the inner cavity of the two through holes (128). The reset assembly (13) includes built-in grooves (131) respectively opened in the inner wall of the two top through holes (128). A sliding piece (132) is slidably connected to the inner cavity of the built-in groove (131). A spring piece (133) is connected between the sliding piece (132) and the built-in groove (131). The bottom end is fixedly connected to one end of the movable bending plate (129); the top of the locking assembly (12) is provided with a fixing block (14), the front end of the fixing block (14) is fixedly connected to the surface of the radiator (6), a moving hole (15) is opened on one side wall of the fixing block (14), a connecting hole (16) is opened in the middle of the rear end of the fixing block (14), an anti-disengagement component (17) is provided in the inner cavity of the moving hole (15), and an operating component (18) is provided on one side of the connecting hole (16).A disengagement assembly (19) is provided in the middle of the inner side of the L-shaped mounting plate (9). The disengagement assembly (19) includes a connecting block (191) fixedly connected to the inner surface of the L-shaped mounting plate (9). A fixing rod (192) is fixedly connected to one side wall of the connecting block (191). An inner tube (193) is provided on one side of the fixing rod (192). The inner tube (193) is fixedly connected to the surface of the radiator (6). A movable disc (194) is slidably connected to the inner cavity of the inner tube (193). A spring (195) is connected between the movable disc (194) and the inner wall of the inner tube (193).

2. The cooling system for a drive motor of a new energy vehicle according to claim 1, characterized in that: The movable circular block (123), connecting rod (125) and rotating block (126) are in the shape of an "I", and the groove is semi-circular.

3. The cooling system for a drive motor of a new energy vehicle according to claim 1, characterized in that: The two U-shaped insert plates (127) are symmetrically distributed. The length between the inner walls of the U-shaped insert plates (127) is greater than the thickness of the L-shaped mounting plate (9). The two through holes (128) are symmetrically distributed and their positions correspond to the positioning groove (10). The movable bending plate (129) is U-shaped as a whole, and its two end faces are adapted to the positioning groove (10).

4. A cooling system for a drive motor of a new energy vehicle according to claim 1, characterized in that: The anti-mis-disengagement component (17) includes two sliding rods (171), one end of each sliding rod (171) is slidably connected to both sides of the inner cavity of the moving hole (15), and a spring (172) is connected between the two sliding rods (171).

5. A cooling system for a drive motor of a new energy vehicle according to claim 4, characterized in that: The sliding rod (171) is fixedly connected to a connecting plate (173) at one end outside the moving hole (15). A locking rod (174) is fixedly connected to the bottom of one side wall of the connecting plate (173). One end of the locking rod (174) moves through the inner cavity of the through hole (11).

6. A cooling system for a drive motor of a new energy vehicle according to claim 4, characterized in that: The sliding rod (171) is fixedly connected to a wedge block (175) in the part of the moving hole (15). One side of the wedge block (175) moves through the inner cavity of the connecting hole (16) to the outside of the fixed block (14).

7. A cooling system for a drive motor of a new energy vehicle according to claim 1, characterized in that: The operating component (18) includes sliding limit plates (181) fixed to both sides of the rear end of the fixed block (14). A movable push plate (182) is movably inserted on the surface of the sliding limit plate (181). A rectangular top block (183) is fixedly connected to the middle of the front end of the movable push plate (182). A limit stop plate (184) is fixedly connected to one end of the sliding limit plate (181).

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