Battery protection and heat dissipation structure for pure electric tractor

Abstract

The utility model belongs to battery protection technical field especially relates to a battery protection heat radiation structure for pure electric tractor, including lower box body and a plurality of heat conduction plates, a plurality of heat conduction plates fixedly connected in lower box body still include: liquid storage tank, liquid storage tank fixedly connected in one side of lower box body, the top surface fixedly connected with liquid injection pipe of liquid storage tank, the liquid injection pipe of liquid storage tank top surface is connected with sealing cover on screw thread, and one side of liquid storage tank is fixedly connected with drain pipe;Fixed casing, fixed casing fixedly connected in one side of lower box body, and the inner wall fixedly connected with heat dissipation fin group of fixed casing, the inner wall fixedly connected with two heat dissipation fans of fixed casing, and two heat dissipation fans are located at both sides of heat dissipation fin group respectively;The utility model solves the problem that the ethylene glycol or propylene glycol component in the cooling liquid in the heat dissipation structure after long time use, will volatilize or decompose with time, causes the cooling liquid to produce metamorphism, reduces the cooling liquid heat dissipation function problem.

Description

Technical Field

[0001] This utility model belongs to the field of battery protection technology, and in particular relates to a battery protection and heat dissipation structure for pure electric tractor vehicles. Background Technology

[0002] The battery protection and heat dissipation structure used in pure electric tractor vehicles, also known as the battery pack heat dissipation structure, is an integrated design that provides physical protection and temperature regulation for the battery pack. It is a core component that ensures battery safety, lifespan, and performance. Its core function is to maintain the battery within its optimal operating temperature range (usually 25-40℃) through efficient heat dissipation (or low-temperature heating), avoiding capacity decay, shortened lifespan, or even safety risks (such as thermal runaway) caused by overheating, overcooling, or uneven temperature.

[0003] For example, Chinese patent CN215342717U discloses a battery pack heat dissipation structure, relating to the field of heat dissipation devices. It includes a lower housing with a mounting bracket at the bottom and mounting slots on both sides above the mounting bracket. Vertical heat-absorbing components are inserted into these slots, and the components are arranged overlappingly within the lower housing. A heat dissipation component is located at one end of the lower housing, with its upper and lower ends connected to the liquid inlet and return outlet of the vertical heat-absorbing component, respectively. The heat dissipation component uses circulating coolant to carry away and dissipate the heat absorbed by the vertical heat-absorbing component. This invention, by interlacing vertical heat-absorbing components on both sides, ensures that liquid-cooled heat sinks are present between adjacent battery cells, effectively increasing the contact area between the liquid-cooled heat sinks and the battery, improving heat absorption efficiency, and providing faster heat dissipation than existing single heat sinks, thus suppressing rapid temperature rise in the battery.

[0004] The aforementioned patent has the following problems:

[0005] This patent has some drawbacks in its use. For example, after prolonged use, components such as ethylene glycol or propylene glycol in the internal coolant of the aforementioned heat dissipation structure will evaporate or decompose over time, causing the coolant to deteriorate and reducing its heat dissipation function. Therefore, we propose a battery protection and heat dissipation structure for pure electric tractor vehicles. Utility Model Content

[0006] The purpose of this invention is to provide a battery protection and heat dissipation structure for pure electric tractors, so as to solve the problems mentioned in the background art.

[0007] In view of this, the present invention provides a battery protection and heat dissipation structure for a pure electric tractor, including a lower housing and multiple heat-conducting plates, wherein the multiple heat-conducting plates are fixedly connected to the lower housing, and further includes:

[0008] A liquid storage tank is fixedly connected to one side of the lower tank body. A liquid injection pipe is fixedly connected to the top surface of the liquid storage tank. A sealing cap is threaded onto the liquid injection pipe on the top surface of the liquid storage tank. A drain pipe is fixedly connected to one side of the liquid storage tank.

[0009] A fixed housing is fixedly connected to one side of the lower housing. A heat dissipation fin assembly is fixedly connected to the inner wall of the fixed housing. Two cooling fans are fixedly connected to the inner wall of the fixed housing, and the two cooling fans are respectively located on both sides of the heat dissipation fin assembly.

[0010] A circulating pump is fixedly connected to one side of a fixed housing. A water inlet is fixedly connected to the pump's inlet, and one end of the water inlet passes through the fixed housing and the heat dissipation fin assembly and is fixedly connected to the liquid storage tank. A water inlet is fixedly connected to the pump's outlet, and one end of the water inlet passes through the fixed housing, the heat dissipation fin assembly, the lower housing, and multiple heat conduction plates and is fixedly connected to the liquid storage tank. The inner cavity of the water inlet is connected to the inner cavity of the liquid storage tank.

[0011] A control component, located within the coolant reservoir, is used to control the flow direction of the coolant.

[0012] Based on the above structure, the liquid storage tank ensures that users can inject coolant into the tank through the inlet pipe on the top surface. The sealing cap ensures that the inlet pipe is sealed. Multiple heat-conducting plates absorb heat generated by the battery cells in the lower casing. A circulation pump, water injection pipe, and water extraction pipe ensure that when the user starts the circulation pump, it circulates the coolant through the tank, pipe, and pipe, carrying away heat from the heat-conducting plates. The heat dissipation fins absorb heat from the coolant. Two cooling fans dissipate heat from the fins. A control component and drain pipe allow users to connect the inner cavity of the storage tank to either the inner cavity of the drain pipe or the inner cavity of the drain pipe. When the inner cavity of the storage tank is connected to the drain pipe, the coolant in the storage tank is discharged to the outside through the drain pipe.

[0013] In the above technical solution, the control component further includes:

[0014] The first rotating groove is formed inside the liquid storage tank and is connected to the inner cavity of the liquid storage tank, the inner cavity of the water pumping pipe and the inner cavity of the drain pipe. A ball core is rotatably connected inside the first rotating groove. A through groove is formed inside the ball core and is connected to the inner cavity of the liquid storage tank and the inner cavity of the water pumping pipe.

[0015] The second rotating groove is formed on the inner wall of the first rotating groove and is connected to the outside. The second rotating groove is rotatably connected to the first rotating rod, one end of the first rotating rod extends to the outside, and the other end of the first rotating rod extends into the first rotating groove and is fixed to the ball core.

[0016] A fixing component, located inside the first rotating rod, is used to fix the first rotating rod.

[0017] Two limiting blocks are fixedly connected to one side of the liquid storage tank;

[0018] A fixing block is fixedly connected to the periphery of the first rotating rod, and the fixing block is in contact with one of the limiting blocks.

[0019] This technical solution ensures that users can replace the deteriorated coolant.

[0020] In the above technical solution, the fixing component further includes:

[0021] A chute is formed inside a first rotating rod and communicates with a second rotating groove. An extrusion block is slidably connected inside the chute. A threaded rod is threadedly connected inside the extrusion block. One end of the threaded rod is fixedly connected to a second rotating rod, and one end of the second rotating rod passes through the inner wall of the chute and extends to the outside to be rotatably connected to the first rotating rod.

[0022] In this technical solution, it is ensured that the first rotating rod will not be affected by external factors and will not rotate.

[0023] In the above technical solution, the extrusion block is further slidably connected to the second rotating groove.

[0024] In this technical solution, it is ensured that when the extrusion block slides, it can slide normally within the second rotating groove.

[0025] In the above technical solution, the other end of the first rotating rod is rotatably connected to the first rotating groove.

[0026] In this technical solution, it is ensured that when the first rotating rod rotates, the other end of the first rotating rod can rotate normally within the first rotating groove.

[0027] In the above technical solution, the through groove is further connected to the inner cavity of the drain pipe.

[0028] In this technical solution, it is ensured that when the ball core rotates to the appropriate position, the through groove can connect with the inner cavity of the drain pipe.

[0029] In the above technical solution, a sealing gasket is further fixedly connected to the periphery of the ball core.

[0030] In this technical solution, it is ensured that the coolant in the storage tank will not leak to the outside through the gap between the inner wall of the first rotating groove and the surface of the ball core.

[0031] Furthermore, in the above technical solution, the liquid storage tank is provided with an observation window.

[0032] In this technical solution, users can observe whether the coolant has deteriorated through the observation window on the reservoir.

[0033] Furthermore, in the above technical solution, both the water injection pipe and the water extraction pipe are copper pipes.

[0034] In this technical solution, it is ensured that the water injection pipe and the water extraction pipe have excellent heat conduction properties.

[0035] The beneficial effects of this utility model are:

[0036] 1. The battery protection and heat dissipation structure of this pure electric tractor features a coolant reservoir. Users can inject coolant into the reservoir through the inlet pipe on its top surface. A sealing cap ensures the inlet pipe is sealed. Multiple heat-conducting plates absorb heat generated by the battery cells in the lower casing. A circulation pump, water injection pipe, and water extraction pipe ensure that when the user starts the pump, it circulates the coolant through the reservoir, water injection pipe, and water extraction pipe, carrying away heat from the heat-conducting plates. The heat dissipation fins ensure efficient heat dissipation. The fin assembly absorbs heat from the coolant. Two cooling fans ensure efficient heat dissipation from the fin assembly. A control unit and drain pipe allow users to connect the coolant reservoir's inner cavity to either the inner cavity of the suction pipe or the inner cavity of the drain pipe. When the reservoir's inner cavity is connected to the drain pipe, the coolant is discharged to the outside through the drain pipe. This solves the problem that after prolonged use, components such as ethylene glycol or propylene glycol in the coolant will evaporate or decompose, causing coolant deterioration and reducing its heat dissipation function.

[0037] 2. The battery protection and heat dissipation structure used in this pure electric tractor ensures that the first rotating rod can rotate within the second rotating groove through the setting of the second rotating groove and the setting of the fixing component, so that the user can fix the first rotating rod within the second rotating groove and prevent it from rotating due to external influences. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0039] Figure 2 This is a detailed structural diagram of the lower housing of this utility model;

[0040] Figure 3 This is a schematic diagram of the internal structure of the fixed shell in this utility model;

[0041] Figure 4 This is a cross-sectional view of the liquid storage tank in this utility model;

[0042] Figure 5 This is one of the schematic diagrams of the internal structure of the liquid storage tank in this utility model;

[0043] Figure 6 This is the second schematic diagram of the internal structure of the liquid storage tank in this utility model;

[0044] Figure 7 This utility model Figure 1 Enlarged structural diagram at point A;

[0045] Figure 8 This is one of the schematic diagrams of the internal structure of the first rotating rod in this utility model;

[0046] Figure 9 This is the second schematic diagram of the internal structure of the first rotating rod in this utility model.

[0047] The markings in the diagram are as follows:

[0048] 1. Lower housing; 2. Heat-conducting plate; 3. Liquid storage tank; 4. Sealing cover; 5. Fixed shell; 6. Heat dissipation fin assembly; 7. Cooling fan; 8. Circulation pump; 9. Water injection pipe; 10. Water extraction pipe; 11. Drain pipe; 12. First rotating groove; 13. Ball core; 14. Through groove; 15. Second rotating groove; 16. First rotating rod; 17. Limiting block; 18. Fixing block; 19. Sliding groove; 20. Extrusion block; 21. Threaded rod; 22. Second rotating rod. Detailed Implementation

[0049] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail.

[0050] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0051] Example 1: This example provides a battery protection and heat dissipation structure for a pure electric tractor, including a lower housing 1 and multiple heat-conducting plates 2, the multiple heat-conducting plates 2 being fixedly connected inside the lower housing 1, and also including:

[0052] The liquid storage tank 3 is fixedly connected to one side of the lower tank 1. The top surface of the liquid storage tank 3 is fixedly connected to the injection pipe. The injection pipe on the top surface of the liquid storage tank 3 is threadedly connected to the sealing cap 4. The side of the liquid storage tank 3 is fixedly connected to the drain pipe 11.

[0053] A fixed housing 5 is fixedly connected to one side of the lower housing 1. A heat dissipation fin assembly 6 is fixedly connected to the inner wall of the fixed housing 5. Two cooling fans 7 are fixedly connected to the inner wall of the fixed housing 5, and the two cooling fans 7 are located on both sides of the heat dissipation fin assembly 6.

[0054] A circulating pump 8 is fixedly connected to one side of the fixed housing 5. A water inlet 10 is fixedly connected to the water inlet of the circulating pump 8, and one end of the water inlet 10 passes through the fixed housing 5 and the heat dissipation fin assembly 6 and is fixedly connected to the liquid storage tank 3. A water inlet 9 is fixedly connected to the drain outlet of the circulating pump 8, and one end of the water inlet 9 passes through the fixed housing 5, the heat dissipation fin assembly 6, the lower housing 1 and multiple heat conduction plates 2 and is fixedly connected to the liquid storage tank 3. The inner cavity of the water inlet 9 is connected to the inner cavity of the liquid storage tank 3.

[0055] The control component is located inside the coolant tank 3 and is used to control the flow direction of the coolant.

[0056] Example 2: This example provides a battery protection and heat dissipation structure for a pure electric tractor. In addition to the technical solutions described in the above examples, it also has the following technical features: the control components include:

[0057] The first rotating groove 12 is opened inside the liquid storage tank 3 and is connected to the inner cavity of the liquid storage tank 3, the inner cavity of the water pumping pipe 10 and the inner cavity of the drain pipe 11. A ball core 13 is rotatably connected inside the first rotating groove 12. A through groove 14 is opened inside the ball core 13 and is connected to the inner cavity of the liquid storage tank 3 and the inner cavity of the water pumping pipe 10.

[0058] The second rotating groove 15 is formed on the inner wall of the first rotating groove 12 and is connected to the outside. The first rotating rod 16 is rotatably connected in the second rotating groove 15, and one end of the first rotating rod 16 extends to the outside, while the other end of the first rotating rod 16 extends into the first rotating groove 12 and is fixed to the ball core 13.

[0059] A fixing component is located inside the first rotating rod 16 and is used to fix the first rotating rod 16.

[0060] Two limiting blocks 17 are fixedly connected to one side of the liquid storage tank 3;

[0061] The fixing block 18 is fixedly connected to the periphery of the first rotating rod 16, and the fixing block 18 is in contact with one of the limiting blocks 17.

[0062] The user manually rotates the first rotating rod 16, causing the ball core 13 to rotate within the first rotating groove 12. This causes the ball core 13 to rotate the through groove 14. As the first rotating rod 16 rotates, it causes the fixing block 18 to rotate away from one of the limiting blocks 17 and come into contact with the other limiting block 17. When the fixing block 18 is in contact with the other limiting block 17, the inner cavity of the storage tank 3 is no longer connected to the inner cavity of the pumping pipe 10. Simultaneously, the inner cavity of the storage tank 3... The cavity is connected to the inner cavity of the drain pipe 11 through the through groove 14. At this time, the deteriorated coolant in the inner cavity of the liquid storage tank 3 will enter the drain pipe 11 through the through groove 14 and be discharged to the outside through the drain pipe 11. After all the coolant has been discharged, the user manually rotates the first rotating rod 16 in the reverse direction, causing the first rotating rod 16 to drive the ball core 13 to rotate in the reverse direction in the first rotating groove 12, so that the ball core 13 drives the through groove 14 to rotate in the reverse direction. When the first rotating rod 16 rotates in the reverse direction, the first rotating rod 16 will drive the fixed block. 18 rotates away from the other limiting block 17 and comes into contact with one of the limiting blocks 17. When the fixing block 18 comes into contact with one of the limiting blocks 17, the inner cavity of the liquid storage tank 3 is no longer connected to the inner cavity of the drain pipe 11. At the same time, the inner cavity of the liquid storage tank 3 will be connected to the inner cavity of the water pumping pipe 10 through the through groove 14. At this time, the coolant entering the inner cavity of the liquid storage tank 3 will not enter the drain pipe 11 through the through groove 14. Then the user manually rotates the sealing cover 4 so that the sealing cover 4 is subjected to the pressure of the top of the liquid storage tank 3. The threaded inlet pipe moves upward, releasing the seal of the sealing cap 4 from the inlet pipe of the reservoir 3. The user then injects new coolant into the reservoir 3's inner cavity through the inlet pipe on the top surface. When an appropriate amount of coolant is injected into the reservoir 3, the user places the sealing cap 4 on the inlet pipe on the top surface of the reservoir 3 and then rotates it in the opposite direction to reseal the reservoir 3, preventing outside air from entering the reservoir 3's inner cavity and ensuring the user can replace the deteriorated coolant.

[0063] Example 3: This example provides a battery protection and heat dissipation structure for a pure electric tractor. In addition to the technical solutions of the above examples, it also has the following technical features, including a fixing component:

[0064] The slide 19 is formed inside the first rotating rod 16 and communicates with the second rotating groove 15. The extrusion block 20 is slidably connected inside the slide 19. The extrusion block 20 is threadedly connected to the threaded rod 21. One end of the threaded rod 21 is fixedly connected to the second rotating rod 22, and one end of the second rotating rod 22 passes through the inner wall of the slide 19 and extends to the outside to be rotatably connected to the first rotating rod 16.

[0065] In use, the user manually rotates the second rotating rod 22, causing the threaded rod 21 to rotate within the slide groove 19. This causes the pressing block 20 to move along the slide groove 19 due to the action of the threaded rod 21, thus pressing the pressing block 20 tightly against the inner wall of the second rotating groove 15. This fixes the first rotating rod 16 within the second rotating groove 15, preventing it from rotating and ensuring that the first rotating rod 16 is not affected by external factors.

[0066] Example 4: This example provides a battery protection and heat dissipation structure for a pure electric tractor. In addition to the technical solutions of the above examples, it also has the following technical features: the extrusion block 20 is slidably connected to the second rotating groove 15.

[0067] Specifically, it is ensured that when the extrusion block 20 slides, the extrusion block 20 can slide normally within the second rotating groove 15.

[0068] Example 5: This example provides a battery protection and heat dissipation structure for a pure electric tractor. In addition to the technical solutions of the above examples, it also has the following technical features: the other end of the first rotating rod 16 is rotatably connected to the first rotating groove 12.

[0069] Specifically, it is ensured that when the first rotating rod 16 rotates, the other end of the first rotating rod 16 can rotate normally within the first rotating groove 12.

[0070] Example 6: This example provides a battery protection and heat dissipation structure for a pure electric tractor. In addition to the technical solutions of the above examples, it also has the following technical features: the through groove 14 is connected to the inner cavity of the drain pipe 11.

[0071] Specifically, it is ensured that when the ball core 13 rotates to the appropriate position, the through groove 14 can connect with the inner cavity of the drain pipe 11.

[0072] Example 7: This example provides a battery protection and heat dissipation structure for a pure electric tractor. In addition to the technical solutions of the above examples, it also has the following technical features: a sealing gasket is fixedly connected to the periphery of the spherical core 13.

[0073] Specifically, this ensures that the coolant in the storage tank 3 will not leak to the outside through the gap between the inner wall of the first rotating groove 12 and the surface of the ball core 13.

[0074] Example 8: This example provides a battery protection and heat dissipation structure for a pure electric tractor. In addition to the technical solutions of the above examples, it also has the following technical features: an observation window is provided on the liquid storage tank 3.

[0075] This includes ensuring that users can observe whether the coolant has deteriorated through the observation window on the reservoir 3.

[0076] Example 9: This example provides a battery protection and heat dissipation structure for a pure electric tractor. In addition to the technical solutions of the above examples, it also has the following technical features: both the water injection pipe 9 and the water extraction pipe 10 are copper pipes.

[0077] Among them, it is ensured that the water injection pipe 9 and the water extraction pipe 10 have excellent heat conduction function.

[0078] Working principle:

[0079] When in use, the user starts the circulation pump 8, which drives the coolant in the inner cavity of the liquid storage tank 3 to circulate through the water injection pipe 9, the water extraction pipe 10 and the inner cavity of the liquid storage tank 3. When the multiple heat conduction plates 2 absorb the heat generated by the battery cells in the lower casing 1, the coolant will carry the heat in the multiple heat conduction plates 2 to the outside. When the coolant passes through the heat dissipation fin assembly 6, the heat dissipation fin assembly 6 will absorb the heat in the coolant. Then the user starts the two cooling fans 7 to dissipate heat from the heat dissipation fin assembly 6.

[0080] When the user observes through the observation window on the reservoir 3 that the coolant in the reservoir 3 has deteriorated, the user manually rotates the first rotating rod 16, causing the ball core 13 to rotate within the first rotating groove 12. This causes the ball core 13 to rotate the through groove 14. As the first rotating rod 16 rotates, it causes the fixing block 18 to rotate away from one of the limiting blocks 17 and come into contact with the other limiting block 17. When the fixing block 18 comes into contact with the other limiting block 17, the inner cavity of the reservoir 3 is no longer in contact with the pump. The inner cavities of water pipe 10 are connected, and the inner cavity of liquid storage tank 3 is connected to the inner cavity of drain pipe 11 through through groove 14. At this time, the deteriorated coolant in the inner cavity of liquid storage tank 3 will enter the drain pipe 11 through through groove 14 and be discharged to the outside through drain pipe 11. After all the coolant has been discharged, the user manually rotates the first rotating rod 16 in the reverse direction, causing the first rotating rod 16 to drive the ball core 13 to rotate in the reverse direction in the first rotating groove 12, causing the ball core 13 to drive the through groove 14 to rotate in the reverse direction. When the first rotating rod 16 rotates in the reverse direction... The first rotating rod 16 will drive the fixed block 18 to rotate away from the other limiting block 17 and come into contact with one of the limiting blocks 17. When the fixed block 18 comes into contact with one of the limiting blocks 17, the inner cavity of the liquid storage tank 3 is no longer connected to the inner cavity of the drain pipe 11. At the same time, the inner cavity of the liquid storage tank 3 will be connected to the inner cavity of the water pumping pipe 10 through the through groove 14. At this time, the coolant entering the inner cavity of the liquid storage tank 3 will not enter the drain pipe 11 through the through groove 14. Then the user can manually rotate the sealing cover 4 to allow the sealing cover 4 to be subjected to... The threaded inlet pipe on the top surface of the coolant tank 3 moves upward, causing the sealing cap 4 to release the seal on the inlet pipe of the coolant tank 3. Then, the user injects new coolant into the inner cavity of the coolant tank 3 through the feed pipe on the top surface of the coolant tank 3. When an appropriate amount of coolant is injected into the coolant tank 3, the user places the sealing cap 4 on the inlet pipe on the top surface of the coolant tank 3 by hand, and then rotates it in the opposite direction to reseal the coolant tank 3 with the sealing cap 4, preventing outside air from entering the inner cavity of the coolant tank 3 and ensuring that the user can replace the deteriorated coolant.

[0081] In use, the user manually rotates the second rotating rod 22, causing the threaded rod 21 to rotate within the slide groove 19. This causes the pressing block 20 to move along the slide groove 19 due to the action of the threaded rod 21, thus pressing the pressing block 20 tightly against the inner wall of the second rotating groove 15. This fixes the first rotating rod 16 within the second rotating groove 15, preventing it from rotating and ensuring that the first rotating rod 16 is not affected by external factors.

[0082] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A battery protection and heat dissipation structure for a pure electric tractor, comprising a lower housing (1) and multiple heat-conducting plates (2), wherein the multiple heat-conducting plates (2) are fixedly connected inside the lower housing (1), characterized in that, Also includes: The liquid storage tank (3) is fixedly connected to one side of the lower box (1). The top surface of the liquid storage tank (3) is fixedly connected to an injection pipe. A sealing cap (4) is threaded onto the injection pipe on the top surface of the liquid storage tank (3). A drain pipe (11) is fixedly connected to one side of the liquid storage tank (3). A fixed housing (5) is fixedly connected to one side of the lower housing (1). A heat dissipation fin assembly (6) is fixedly connected to the inner wall of the fixed housing (5). Two heat dissipation fans (7) are fixedly connected to the inner wall of the fixed housing (5), and the two heat dissipation fans (7) are located on both sides of the heat dissipation fin assembly (6). A circulating pump (8) is fixedly connected to one side of a fixed housing (5). A pumping pipe (10) is fixedly connected to the pumping port of the circulating pump (8). One end of the pumping pipe (10) passes through the fixed housing (5) and the heat dissipation fin assembly (6) and is fixedly connected to the liquid storage tank (3). A water injection pipe (9) is fixedly connected to the drain port of the circulating pump (8). One end of the water injection pipe (9) passes through the fixed housing (5), the heat dissipation fin assembly (6), the lower housing (1), and multiple heat conduction plates (2) and is fixedly connected to the liquid storage tank (3). The inner cavity of the water injection pipe (9) is connected to the inner cavity of the liquid storage tank (3). A control component located inside the reservoir (3) and used to control the flow direction of the coolant.

2. The battery protection and heat dissipation structure for a pure electric tractor according to claim 1, characterized in that, The control component includes: The first rotating groove (12) is opened in the liquid storage tank (3) and is connected to the inner cavity of the liquid storage tank (3), the inner cavity of the water pumping pipe (10) and the inner cavity of the drain pipe (11). A ball core (13) is rotatably connected in the first rotating groove (12). A through groove (14) is opened in the ball core (13) and the through groove (14) is connected to the inner cavity of the liquid storage tank (3) and the inner cavity of the water pumping pipe (10). The second rotating groove (15) is opened on the inner wall of the first rotating groove (12) and is connected to the outside. The second rotating groove (15) is rotatably connected to the first rotating rod (16), and one end of the first rotating rod (16) extends to the outside, and the other end of the first rotating rod (16) extends into the first rotating groove (12) and is fixed to the ball core (13). A fixing component is located inside the first rotating rod (16) and is used to fix the first rotating rod (16); Two limiting blocks (17) are fixedly connected to one side of the liquid storage tank (3); A fixing block (18) is fixedly connected to the periphery of the first rotating rod (16), and the fixing block (18) is in contact with one of the limiting blocks (17).

3. The battery protection and heat dissipation structure for a pure electric tractor according to claim 2, characterized in that, The fixing component includes: A slid groove (19) is formed inside a first rotating rod (16) and communicates with a second rotating groove (15). A pressing block (20) is slidably connected inside the slid groove (19). A threaded rod (21) is threadedly connected inside the pressing block (20). One end of the threaded rod (21) is fixedly connected to a second rotating rod (22), and one end of the second rotating rod (22) penetrates the inner wall of the slid groove (19) and extends to the outside to be rotatably connected to the first rotating rod (16).

4. The battery protection and heat dissipation structure for a pure electric tractor according to claim 3, characterized in that, The extrusion block (20) is slidably connected to the second rotating groove (15).

5. The battery protection and heat dissipation structure for a pure electric tractor according to claim 2, characterized in that, The other end of the first rotating rod (16) is rotatably connected to the first rotating groove (12).

6. The battery protection and heat dissipation structure for a pure electric tractor according to claim 2, characterized in that, The through groove (14) is connected to the inner cavity of the drain pipe (11).

7. The battery protection and heat dissipation structure for a pure electric tractor according to claim 2, characterized in that, A sealing gasket is fixedly connected to the periphery of the ball core (13).

8. The battery protection and heat dissipation structure for a pure electric tractor according to claim 1, characterized in that, The liquid storage tank (3) is equipped with an observation window.

9. The battery protection and heat dissipation structure for a pure electric tractor according to claim 1, characterized in that, Both the water injection pipe (9) and the water extraction pipe (10) are copper pipes.

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