Power battery liquid cooling device

Abstract

The utility model discloses a power battery liquid cooling device which comprises an installation bin, a cooling device is arranged in the installation bin and comprises a cooling box, a connecting pipe and a box cover, the box cover is installed at the top end of the cooling box, the top end of the box cover is connected with an adjusting device, and the adjusting device comprises a fixed pipe, an adjusting sleeve, a movable sleeve, an outer sleeve, an inner rod, an adjusting block and an adjusting groove. The movable sleeve is connected with the connecting pipe through threads, the outer sleeve is arranged on the outer side of the inner rod in a sleeving mode, the adjusting block is in sliding connection with the adjusting groove, and a locking mechanism is arranged on the outer side of the connecting pipe and comprises a reset plate, a sliding sleeve, a vertical plate, a transverse plate, a reset block, a reset hole, a fixing block, a reset groove, a reset spring and a reset rod. According to the power battery liquid cooling system, the working efficiency of the power battery liquid cooling system is improved, stable control over the temperature of the battery is guaranteed, meanwhile, the service life of the battery is prolonged, and the safety of the battery is improved.

Description

Technical Field

[0001] This utility model relates to the field of power battery cooling technology, and more specifically, it relates to a power battery liquid cooling device. Background Technology

[0002] In the field of liquid cooling technology for power batteries, existing technologies face several pressing issues that need to be addressed. These issues not only affect battery performance and lifespan but may also pose serious safety hazards, primarily in the following aspects:

[0003] Firstly, as a core component in the new energy field, power batteries are widely used in energy storage devices of renewable energy systems such as solar power generation and wind power generation, as well as power sources in electric vehicles. However, regardless of the type of power battery, they inevitably face the challenge of high-power charging and discharging during actual use. This high-intensity electrochemical reaction process causes a large amount of heat to be generated inside the battery, causing the battery temperature to rise rapidly. The normal operation of power batteries must be strictly controlled within the designed temperature range. To meet this challenge, the industry has generally adopted water cooling, which uses liquid flow to remove heat. However, existing water cooling technology still has significant shortcomings: the cooling effect is limited to the area where the bottom of the battery is in direct contact with the water cooling plate, while the temperature in other parts of the battery is still at risk of being too high. This limited heat exchange area severely restricts the heat dissipation efficiency and cannot meet the ever-increasing demand for efficient heat dissipation of power batteries.

[0004] Secondly, the performance and lifespan of power batteries are extremely sensitive to temperature. Excessively high temperatures can accelerate battery aging, reduce capacity, and even trigger safety accidents such as thermal runaway. Similarly, excessively low temperatures can affect the battery's charging and discharging efficiency and reduce its output power. Therefore, precise temperature control is crucial for ensuring battery performance and safety. However, most existing liquid cooling systems adopt a fixed-speed design, lacking a flexible adjustment mechanism for the coolant delivery speed. This rigid design cannot adjust the coolant flow rate according to changes in ambient temperature, battery operating status, and dynamic changes in heat dissipation requirements, making it difficult to achieve optimal cooling. In some cases, insufficient cooling may affect battery performance, while in other cases, excessive cooling may waste energy. This limitation seriously affects the practicality and efficiency of liquid cooling systems.

[0005] More seriously, while some improved devices have added coolant speed regulation functions, attempting to achieve dynamic adjustment of the delivery speed through the cooperation of mechanical components, these improved designs still have significant flaws. These regulation devices are often too simple in structure and are prone to problems in actual use. On the one hand, the coolant will exert a continuous impact on the internal structure of the regulation device during high-speed circulation. On the other hand, the power battery system will generate severe vibrations during operation (especially when the electric vehicle is in motion). These factors together cause the regulation structure to loosen easily, affecting the stability and reliability of the regulation device. The instability of the regulation structure directly leads to fluctuations in the coolant delivery speed, making it impossible to maintain the heat dissipation effect at its best, seriously affecting the practicality of the cooling system and the performance stability of the battery. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the problems existing in the prior art, this utility model provides a power battery liquid cooling device to solve the technical problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a power battery liquid cooling device, comprising an installation chamber, characterized in that: a cooling device is provided in the installation chamber, the cooling device comprising a cooling box, a connecting pipe, and a box cover, the cooling box being installed in the installation chamber, the box cover being detachably installed on the top of the cooling box, an adjustment device being connected to the top of the box cover, the adjustment device comprising a fixed pipe, an adjusting sleeve, a movable sleeve, an outer sleeve, an inner rod, an adjusting block, and an adjusting groove, the two ends of the adjusting sleeve being rotatably connected to the connecting pipe and the fixed pipe respectively, the outer wall of the movable sleeve being movably connected to the inner wall of the connecting pipe via threads, the outer sleeve being slidably sleeved on the outside of the inner rod, the inner rod being disposed on the inside of the adjusting sleeve, and the adjusting block being connected to the adjusting groove. The connecting pipe is slidably connected by grooves, and multiple adjustment grooves are inclinedly formed inside the connecting pipe. A locking mechanism is provided on the outside of the connecting pipe. The locking mechanism includes a reset plate, a sliding sleeve, a vertical plate, a horizontal plate, a reset block, a reset hole, a fixing block, a reset groove, a reset spring, and a reset rod. The reset plate is rotatably mounted on the outside of the connecting pipe. The sliding sleeve is sleeved on the outside of the connecting pipe. The horizontal plate is fixedly connected to one side of the sliding sleeve through the vertical plate. The reset block is fixedly connected to one side of the reset plate. The reset hole is formed on the fixing block. The fixing block is fixedly mounted on the outside of the connecting pipe. The reset spring is sleeved on the outside of the reset rod. The reset rod is connected to one side of the reset block and slides into the reset hole. The reset groove is formed on the reset plate.

[0010] The present invention is further configured such that a cover is detachably provided at the top of the installation compartment, and a fan is detachably provided at both the cover and the bottom of the installation compartment, and the fans provided at both the cover and the bottom of the installation compartment are installed facing upwards in the same direction.

[0011] The present invention is further configured such that a battery is detachably installed in the cooling box, a cooler is detachably installed on one side of the cooling box, the input end of the cooler is connected to the bottom of the interior of the cooling box, a corrugated pipe is connected to the output end of the cooler, and the output end of the cooler is connected to one end of a connecting pipe through the corrugated pipe. A buffer chamber is detachably installed inside the box cover, the bottom end of the fixing pipe passes through the box cover and is connected to the top of the buffer chamber, and multiple nozzles are connected to the bottom end of the buffer chamber. The above components realize atomized spraying, uniform heat exchange, and prevent local overheating and insufficient heat exchange.

[0012] The present invention is further configured such that a fixed rod is provided inside the movable sleeve, a connecting rod is provided inside the adjusting sleeve, the outer wall of the outer sleeve is fixedly connected to the inner wall of the movable sleeve through the fixed rod, and the inner rod is fixedly connected to the inner wall of the adjusting sleeve through the connecting rod.

[0013] The present invention is further configured such that a movable spring is connected to one side of the adjusting block, and a movable block is connected to the other end of the movable spring.

[0014] The present invention is further configured such that a mating plate is provided on one side of the adjusting groove, the mating plate is fixedly installed inside the connecting pipe, a mating spring is connected to one side of the mating plate, and the other end of the mating spring is connected to the adjusting block. The arrangement of the mating spring and the mating block ensures the stable movement of the adjusting block.

[0015] The present invention is further configured such that a plurality of locking rods are slidably provided on the side wall of the adjusting sleeve, a connecting spring is provided on the outer side of the adjusting sleeve, a plurality of locking grooves are provided on the outer wall of the connecting tube, and one end of the locking rod is connected to the outer wall of the adjusting sleeve through the connecting spring, and the other end of the locking rod is inserted into the locking groove. A return spring is connected to one side of the sliding sleeve, and the other end of the return spring is in contact with the reset plate. The cooperation of the above components realizes the stable locking of the adjusting sleeve.

[0016] The present invention is further configured such that a guide groove is provided on the outer side of the connecting pipe, and a guide block is fixedly provided on the inner side of the sliding sleeve. The guide block is slidably disposed in the guide groove, and the arrangement of the guide block and the guide groove realizes the limiting and guiding function of the sliding sleeve.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a power battery liquid cooling device, which has the following features:

[0019] Beneficial effects:

[0020] 1. The cooling device constructs a highly efficient liquid cooling circulation system by combining multiple cooling boxes in the installation chamber with a spray system consisting of a cover, a buffer chamber, and nozzles. Through the circulating cooling of the coolant by the cooler and the flexible connection of the bellows, continuous cooling and stable delivery of the coolant are achieved. In particular, the atomized spraying method of the nozzles significantly expands the contact area between the coolant and the battery, solving the problem of limited heat exchange area in traditional water cooling devices. The system ensures uniform cooling of the battery pack through the series operation of multiple cooling boxes, effectively avoiding local overheating and improving overall heat dissipation efficiency.

[0021] 2. The innovatively designed adjustment device employs a precise fit between the adjustment sleeve and the moving sleeve. Through the prismatic structure of the inner rod and the outer sleeve, a precise adjustment system for the coolant flow rate is formed. Combined with the guiding effect of the adjustment block in the adjustment groove and the elastic connection mechanism between the movable spring and the movable block, precise control of the flow area is achieved. The reset design of the mating plate and the mating spring ensures the smoothness and reliability of the adjustment process. This multi-linkage adjustment mechanism completely solves the technical problem of the fixed coolant flow rate in traditional equipment, which cannot be adjusted according to working conditions, ensuring the optimal cooling effect under different working conditions.

[0022] 3. The locking mechanism is designed to create a stable and reliable fixing structure through the precise cooperation of the reset plate, reset groove, and horizontal plate, combined with the locking system of the sliding sleeve and vertical plate. The reset mechanism of the locking rod and connecting spring, along with the multi-point locking of the locking rod in the locking groove, not only provides a convenient operation method, but also ensures the smoothness of the adjustment process through the buffering effect of the return spring. In particular, the double limit design of the guide block and guide groove completely solves the problems of easy loosening and displacement of traditional adjustment devices, ensuring the stability after flow rate adjustment and improving the reliability and service life of the equipment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a power battery liquid cooling device according to the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the present invention with the cover removed;

[0025] Figure 3 This is a cross-sectional view of the cooling box portion of this utility model.

[0026] Figure 4 This is a schematic diagram of the adjustment device and locking mechanism in this utility model;

[0027] Figure 5 This is a cross-sectional structural diagram of the adjusting device and locking mechanism in this utility model;

[0028] Figure 6for Figure 5 A magnified schematic diagram of the structure at point A in the middle.

[0029] In the diagram: 1. Installation compartment; 2. Cooling box; 3. Connecting pipe; 4. Box cover; 5. Fixing pipe; 6. Adjusting sleeve; 7. Moving sleeve; 8. Outer sleeve; 9. Inner rod; 10. Adjusting block; 11. Adjusting groove; 12. Reset plate; 13. Sliding sleeve; 14. Vertical plate; 15. Horizontal plate; 16. Reset block; 17. Reset hole; 18. Fixing block; 19. Reset spring; 20. Reset rod; 21. Compartment cover; 22. Fan; 23. Battery; 24. Cooler; 25. Bellows; 26. Buffer compartment; 27. Nozzle; 28. Fixing rod; 29. ​​Connecting rod; 30. Movable spring; 31. Movable block; 32. Mating plate; 33. Mating spring; 34. Locking rod; 35. Connecting spring; 36. Locking groove; 37. Return spring; 38. Guide groove; 39. Guide block; 50. Reset groove. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0032] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0033] Please see Figures 1-6A power battery liquid cooling device includes an installation chamber 1, characterized in that: a cooling device is provided in the installation chamber 1, the cooling device includes a cooling box 2, a connecting pipe 3, and a box cover 4. The cooling box 2 is installed in the installation chamber 1, and the box cover 4 is detachably installed on the top of the cooling box 2. An adjustment device is connected to the top of the box cover 4. The adjustment device includes a fixed pipe 5, an adjusting sleeve 6, a movable sleeve 7, an outer sleeve 8, an inner rod 9, an adjusting block 10, and an adjusting groove 11. The two ends of the adjusting sleeve 6 are rotatably connected to the connecting pipe 3 and the fixed pipe 5, respectively. The outer wall of the movable sleeve 7 is movably connected to the inner wall of the connecting pipe 3 by threads. The outer sleeve 8 is slidably sleeved on the outside of the inner rod 9. The inner rod 9 is located inside the adjusting sleeve 6. The adjusting block 10 is slidably connected to the adjusting groove 11. Multiple adjusting grooves 11 are inclinedly opened on the connecting pipe 5. Inside the tube 3, a locking mechanism is provided on the outside of the connecting tube 3. The locking mechanism includes a reset plate 12, a sliding sleeve 13, a vertical plate 14, a horizontal plate 15, a reset block 16, a reset hole 17, a fixing block 18, a reset groove 50, a reset spring 19, and a reset rod 20. The reset plate 12 is rotatably installed on the outside of the connecting tube 3. The sliding sleeve 13 is sleeved on the outside of the connecting tube 3. The horizontal plate 15 is fixedly connected to one side of the sliding sleeve 13 through the vertical plate 14. The reset block 16 is fixedly connected to one side of the reset plate 12. The reset hole 17 is opened on the fixing block 18. The fixing block 18 is fixedly installed on the outside of the connecting tube 3. The reset spring 19 is sleeved on the outside of the reset rod 20. The reset rod 20 is connected to one side of the reset block 16 and slides into the reset hole 17. The reset groove 50 is opened on the reset plate 12.

[0034] The top of the installation compartment 1 is detachably equipped with a compartment cover 21. Both the compartment cover 21 and the bottom of the installation compartment 1 are detachably equipped with fans 22, and both the compartment cover 21 and the fans 22 at the bottom of the installation compartment 1 are installed facing upwards in the same direction.

[0035] A battery 23 is detachably installed in the cooling box 2. A cooler 24 is detachably installed on one side of the cooling box 2. The input end of the cooler 24 is connected to the bottom of the interior of the cooling box 2. A corrugated pipe 25 is connected to the output end of the cooler 24. The output end of the cooler 24 is connected to one end of the connecting pipe 3 through the corrugated pipe 25. A buffer chamber 26 is detachably installed inside the box cover 4. The bottom end of the fixing pipe 5 passes through the box cover 4 and is connected to the top of the buffer chamber 26. Multiple nozzles 27 are connected to the bottom end of the buffer chamber 26.

[0036] In this embodiment, when the device is needed, the cooler 24 installed on one side of the first cooling tank 2 is first opened, allowing the cooler 24 to extract and cool the coolant stored in the first cooling tank 2. Then, the coolant is pumped by the built-in pump in the cooler 24 into the bellows 25. After passing through the bellows 25, connecting pipe 3, and fixing pipe 5, it is transported to the buffer chamber 26 located inside the cover 4 installed on top of the second cooling tank 2. The coolant is then atomized and sprayed out through the nozzle 27 at the bottom of the buffer chamber 26, achieving uniform cooling of the surface of the battery 23. The coolant is usually silicone oil, and the battery 23 is a high-density... The sealed structure is made of waterproof material. The sprayed coolant will deposit at the bottom of the second cooling tank 2. Then, the coolers 24 set on one side of the second, third and fourth cooling tanks 2 are turned on in sequence to achieve cyclic cooling of the battery group 23 and ensure uniform cooling effect. When using the device, the fans 22 installed at the bottom of the installation chamber 1 and on the cover 21 are turned on simultaneously. The fan 22 installed at the bottom of the installation chamber 1 draws in outside air and blows away the heat accumulated inside the installation chamber 1. The fan 22 installed on the cover 21 exhausts the heat and air in the installation chamber 1 to ensure air circulation and prevent heat from accumulating inside the installation chamber 1.

[0037] Please see Figures 4-6 As a further implementation of the overall equipment: the movable sleeve 7 is provided with a fixing rod 28, the adjusting sleeve 6 is provided with a connecting rod 29, the outer wall of the outer sleeve 8 is fixedly connected to the inner wall of the movable sleeve 7 through the fixing rod 28, and the inner rod 9 is fixedly connected to the inner wall of the adjusting sleeve 6 through the connecting rod 29.

[0038] A movable spring 30 is connected to one side of the adjusting block 10, and a movable block 31 is connected to the other end of the movable spring 30.

[0039] A mating plate 32 is provided on one side of the adjusting groove 11. The mating plate 32 is fixedly installed inside the connecting pipe 3. A mating spring 33 is connected to one side of the mating plate 32. The other end of the mating spring 33 is connected to the adjusting block 10.

[0040] Multiple locking rods 34 are slidably provided on the side wall of the adjusting sleeve 6. A connecting spring 35 is provided on the outer side of the adjusting sleeve 6. Multiple locking grooves 36 are provided on the outer wall of the connecting tube 3. One end of the locking rod 34 is connected to the outer wall of the adjusting sleeve 6 through the connecting spring 35, and the other end of the locking rod 34 is inserted into the locking groove 36. A return spring 37 is connected to one side of the sliding sleeve 13. The other end of the return spring 37 is in contact with the reset plate 12.

[0041] A guide groove 38 is provided on the outer side of the connecting pipe 3, and a guide block 39 is fixedly provided on the inner side of the sliding sleeve 13. The guide block 39 is slidably disposed in the guide groove 38.

[0042] More specifically, when the coolant delivery speed needs to be adjusted, firstly, the reset block 16 is moved. Then, the reset block 16 will drive the reset rod 20 to slide along the reset hole 17 opened on the fixed block 18. The reset block 16 and the fixed block 18 will cooperate to squeeze the reset spring 19 sleeved on the outside of the reset rod 20. The reset block 16 will also drive the reset groove 50 to rotate through the reset plate 12. When the reset spring 19 is squeezed to its limit, the reset groove 50 will move to the position corresponding to the horizontal plate 15. Then, the sliding sleeve 13 is pushed, causing the inner guide block 39 to slide along the guide groove 38. The sliding sleeve 13 will also drive the vertical plate 14 and the horizontal plate 15 to move. The sliding sleeve 13 and the reset plate 12 will cooperate to squeeze the return spring 37. When the return spring 37 is squeezed to its limit, A horizontal plate 15 near the sliding sleeve 13 passes through the reset groove 50 and moves to the other side of the reset plate 12. At this time, the reset block 16 is released, and the reset spring 19 pushes the reset block 16 to drive the reset rod 20 to reset. The reset block 16 will also drive the reset hole 17 to rotate and reset through the reset plate 12. Then, a horizontal plate 15 near the sliding sleeve 13 and a vertical plate 14 cooperate to limit the sliding sleeve 13 to one side of the reset plate 12. At this time, the sliding sleeve 13 no longer limits the locking rod 34. Then, the adjusting sleeve 6 is rotated, and the adjusting sleeve 6 will drive the multiple locking rods 34 slidably set on the side wall to rotate. Then, the inner wall of the locking groove 36 presses against one end of the locking rod 34. Due to the rounded corner design at the edge of the locking groove 36 and the end of the locking rod 34, one end of the locking rod 34 slides out of the locking groove 36, and the other end of the locking rod 34... The connecting spring 35 is stretched, and the adjusting sleeve 6 drives the inner rod 9 to rotate via the connecting rod 29. The special prismatic structure design of the outer side of the inner rod 9 and the inner side of the outer sleeve 8 causes the inner rod 9 to drive the outer sleeve 8 to rotate. The outer sleeve 8 then drives the movable sleeve 7 to rotate via the fixed rod 28. Since the outer wall of the movable sleeve 7 is connected to the inner wall of the connecting pipe 3 via threads, the movable sleeve 7 drives the outer sleeve 8 to slide along the inner rod 9 via the fixed rod 28. The movable sleeve 7 then pushes the adjusting block 10 to slide along the adjusting groove 11. One side of the adjusting block 10 engages with the mating plate 32 to press against the mating spring 33. Due to the special inclined structure design of the adjusting block 10 and the adjusting groove 11, the adjusting block 10 converges inwards while sliding along the adjusting groove 11, simultaneously adjusting... Block 10, via a movable spring 30 connected to one side, causes movable blocks 31 to move inwards. Multiple movable blocks 31 then abut together. Adjusting block 10, in conjunction with movable blocks 31, presses against movable springs 30, changing the gap between them. This, combined with the movement of adjusting block 10, alters the flow area of ​​coolant in connecting pipe 3, thereby changing the coolant delivery speed. Once the delivery speed is adjusted appropriately, the adjusting sleeve 6 is stopped, causing connecting spring 35 to reset the locking rod 34, inserting one end of the locking rod 34 into the corresponding locking groove 36. Then, the reset block 16 is moved again, causing it to slide the reset rod 20 along the reset hole 17. Simultaneously, the reset block 16, through the reset plate 12, causes the reset groove 50 to rotate.When the reset slot 50 rotates to the position corresponding to the horizontal plate 15 again, the return spring 37 pushes the sliding sleeve 13 to slide and reset along the guide block 39 and the guide slot 38. The sliding sleeve 13 will also drive the vertical plate 14 and the horizontal plate 15 to slide and reset. After the return spring 37 is fully reset, the other two horizontal plates 15 will move to the sides of the reset plate 12 respectively. Then the reset block 16 is released, and the reset spring 19 pushes the reset block 16 to rotate and reset again. Then the reset block 16 drives the reset rod 20 to rotate and reset again, and the reset block 16 passes through the reset plate again. The reset plate 12 rotates the reset groove 50 to reset. At this time, the vertical plate 14 and the two horizontal plates 15 cooperate to limit the sliding sleeve 13 to one side of the reset plate 12. Combined with the slider and groove limiting the sliding sleeve 13, it prevents the sliding sleeve 13 from moving. Then, the inner wall of the sliding sleeve 13 further limits the outer end of the locking rod 34, preventing the locking rod 34 from moving. Finally, the locking rod 34 and the locking groove 36 cooperate to limit the adjusting sleeve 6, locking it securely. This ensures the stability of the flow rate after adjustment, prevents unexpected changes, and thus guarantees a stable cooling effect.

[0043] In summary, when the entire device is in use or operation: First, the cooler 24 installed on one side of the first cooling tank 2 is opened, allowing the cooler 24 to extract and cool the coolant stored in the first cooling tank 2. Then, the coolant is pumped through the built-in pump in the cooler 24 into the bellows 25. From there, it is transported through the bellows 25, connecting pipe 3, and fixing pipe 5 to the buffer chamber 26 located inside the cover 4 installed above the second cooling tank 2. The coolant is then atomized and sprayed out through the nozzle 27 at the bottom of the buffer chamber 26, achieving uniform cooling of the battery 23 surface. The coolant is typically silicone oil. 23 has a high-sealing structure and is made of waterproof material. The sprayed coolant will deposit at the bottom of the second cooling box 2. Then, the coolers 24 set on one side of the second, third and fourth cooling boxes 2 are turned on in sequence to achieve cyclic cooling of the battery group 23 and ensure uniform cooling effect. When using the device, the fans 22 installed at the bottom of the installation chamber 1 and on the cover 21 are turned on simultaneously. The fan 22 installed at the bottom of the installation chamber 1 draws in outside air and blows away the heat accumulated inside the installation chamber 1. The fan 22 installed on the cover 21 exhausts the heat and air in the installation chamber 1 to ensure air circulation and prevent heat from accumulating inside the installation chamber 1.

[0044] When the coolant delivery speed needs to be adjusted, first, the reset block 16 is moved. Then, the reset block 16 will drive the reset rod 20 to slide along the reset hole 17 on the fixed block 18. The reset block 16 and the fixed block 18 will cooperate to compress the reset spring 19 sleeved on the outside of the reset rod 20. The reset block 16 will also drive the reset groove 50 to rotate through the reset plate 12. When the reset spring 19 is compressed to its limit, the reset groove 50 will move to the position corresponding to the horizontal plate 15. Then, the sliding sleeve 13 will be pushed, causing the inner guide block 39 to slide along the guide groove 38. The sliding sleeve 13 will also drive the vertical plate 14 and the horizontal plate 15 to move. The sliding sleeve 13 and the reset plate 12 will cooperate to compress the return spring 37. When the return spring 37 is compressed to its limit, it will move closer to the sliding plate 15. A horizontal plate 15 of sleeve 13 passes through the reset groove 50 and moves to the other side of the reset plate 12. At this time, the reset block 16 is released, and the reset spring 19 pushes the reset block 16 to drive the reset rod 20 to reset. The reset block 16 will drive the reset groove 50 to rotate and reset through the reset plate 12. Then, a horizontal plate 15 and a vertical plate 14 near the sliding sleeve 13 cooperate to limit the sliding sleeve 13 to one side of the reset plate 12. At this time, the sliding sleeve 13 no longer limits the locking rod 34. Then, the adjusting sleeve 6 is rotated, and the adjusting sleeve 6 will drive the multiple locking rods 34 slidably set on the side wall to rotate. Then, the inner wall of the locking groove 36 presses one end of the locking rod 34. Due to the rounded corner design of the edge of the locking groove 36 and the end of the locking rod 34, one end of the locking rod 34 slides out of the locking groove 36, and the other end of the locking rod 34 drives the locking rod 34 to rotate. When the connecting spring 35 is stretched, the adjusting sleeve 6 drives the inner rod 9 to rotate via the connecting rod 29. The special prismatic structure design of the outer side of the inner rod 9 and the inner side of the outer sleeve 8 causes the inner rod 9 to drive the outer sleeve 8 to rotate. The outer sleeve 8 then drives the movable sleeve 7 to rotate via the fixed rod 28. Since the outer wall of the movable sleeve 7 is connected to the inner wall of the connecting tube 3 via threads, the movable sleeve 7 drives the outer sleeve 8 to slide along the inner rod 9 via the fixed rod 28. The movable sleeve 7 then pushes the adjusting block 10 to slide along the adjusting groove 11. One side of the adjusting block 10 engages with the mating plate 32 to press against the mating spring 33. Due to the special inclined structure design of the adjusting block 10 and the adjusting groove 11, the adjusting block 10 converges inwards while sliding along the adjusting groove 11. The adjusting block 10, connected to one side by a movable spring 30, moves the movable block 31 inward, causing multiple movable blocks 31 to abut together. The adjusting block 10, in conjunction with the movable blocks 31, then presses against the movable spring 30, changing the gap between the movable springs 30. This, combined with the movement of the adjusting block 10, alters the flow area of ​​the coolant in the connecting pipe 3, thereby changing the coolant delivery speed. Once the delivery speed is adjusted appropriately, the adjusting sleeve 6 stops rotating, causing the connecting spring 35 to reset the locking rod 34, inserting one end of the locking rod 34 into the corresponding locking groove 36. Then, the reset block 16 is moved again, causing it to slide the reset rod 20 along the reset hole 17. Simultaneously, the reset block 16, through the reset plate 12, again rotates the reset groove 50.When the reset slot 50 rotates to the position corresponding to the horizontal plate 15 again, the return spring 37 pushes the sliding sleeve 13 to slide and reset along the guide block 39 and the guide slot 38. The sliding sleeve 13 will also drive the vertical plate 14 and the horizontal plate 15 to slide and reset. After the return spring 37 is fully reset, the other two horizontal plates 15 will move to the sides of the reset plate 12 respectively. Then the reset block 16 is released, and the reset spring 19 pushes the reset block 16 to rotate and reset again. Then the reset block 16 drives the reset rod 20 to rotate and reset again, and the reset block 16 passes through the reset plate again. The reset plate 12 rotates the reset hole 17 to reset. At this time, the vertical plate 14 and the two horizontal plates 15 cooperate to limit the sliding sleeve 13 to one side of the reset plate 12. Combined with the slider and groove limiting the sliding sleeve 13, it prevents the sliding sleeve 13 from moving. Then, the inner wall of the sliding sleeve 13 further limits the outer end of the locking rod 34, preventing the locking rod 34 from moving. Finally, the locking rod 34 and the locking groove 36 cooperate to limit the adjusting sleeve 6, locking it in place. This ensures the stability of the flow rate after adjustment, prevents unexpected changes, and thus guarantees a stable cooling effect.

[0045] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A power battery liquid cooling device comprising a mounting bin (1), characterized in that: A cooling device is provided in the installation chamber (1). The cooling device includes a cooling box (2), a connecting pipe (3), and a box cover (4). The cooling box (2) is installed in the installation chamber (1), and the box cover (4) is installed on the top of the cooling box (2). An adjustment device is connected to the top of the box cover (4). The adjustment device includes a fixed pipe (5), an adjusting sleeve (6), a movable sleeve (7), an outer sleeve (8), an inner rod (9), an adjusting block (10), and an adjusting groove (11). The movable sleeve (7) is connected to the connecting pipe (3) by threads. The outer sleeve (8) is fitted on the outside of the inner rod (9). The adjusting block (10) is slidably connected to the adjusting groove (11). A locking mechanism is provided on the outside of the connecting pipe (3). The locking mechanism includes a reset plate (12), a sliding sleeve (13), a vertical plate (14), a horizontal plate (15), a reset block (16), a reset hole (17), a fixing block (18), a reset groove (50), a reset spring (19), and a reset rod (20). The horizontal plate (15) is connected to one side of the sliding sleeve (13) through the vertical plate (14). The reset hole (17) is opened on the fixing block (18). The reset spring (19) is sleeved on the outside of the reset rod (20). The reset rod (20) is connected to one side of the reset block (16). The reset groove (50) is opened on the reset plate (12).

2. The liquid cooling device for power battery according to claim 1, characterized in that: The top of the installation chamber (1) is detachably provided with a chamber cover (21), and both the chamber cover (21) and the bottom of the installation chamber (1) are detachably provided with a fan (22), and both the chamber cover (21) and the fan (22) at the bottom of the installation chamber (1) are installed facing upwards in the same direction.

3. The liquid cooling device for power battery according to claim 2, characterized in that: A battery (23) is detachably installed in the cooling box (2). A cooler (24) is detachably installed on one side of the cooling box (2). The input end of the cooler (24) is connected to the bottom of the interior of the cooling box (2). A corrugated pipe (25) is connected to the output end of the cooler (24). The output end of the cooler (24) is connected to one end of the connecting pipe (3) through the corrugated pipe (25). A buffer chamber (26) is detachably installed inside the box cover (4). The bottom end of the fixing pipe (5) passes through the box cover (4) and is connected to the top end of the buffer chamber (26). Multiple nozzles (27) are connected to the bottom end of the buffer chamber (26).

4. The liquid cooling device for power battery according to any one of claims 1-3, characterized in that: The movable sleeve (7) is provided with a fixing rod (28), the adjusting sleeve (6) is provided with a connecting rod (29), the outer wall of the outer sleeve (8) is fixedly connected to the inner wall of the movable sleeve (7) through the fixing rod (28), and the inner rod (9) is fixedly connected to the inner wall of the adjusting sleeve (6) through the connecting rod (29).

5. The liquid cooling device for power battery according to claim 4, characterized in that: The adjusting block (10) is connected to a movable spring (30) on one side, and a movable block (31) is connected to the other end of the movable spring (30).

6. The liquid cooling device for power battery according to claim 5, characterized in that: The adjusting groove (11) is provided with a mating plate (32) on one side. The mating plate (32) is fixedly installed inside the connecting pipe (3). A mating spring (33) is connected to one side of the mating plate (32). The other end of the mating spring (33) is connected to the adjusting block (10).

7. The liquid cooling device for power battery according to claim 1, characterized in that: Multiple locking rods (34) are slidably provided on the side wall of the adjusting sleeve (6). A connecting spring (35) is provided on the outer side of the adjusting sleeve (6). Multiple locking grooves (36) are provided on the outer wall of the connecting tube (3). One end of the locking rod (34) is connected to the outer wall of the adjusting sleeve (6) through the connecting spring (35). The other end of the locking rod (34) is inserted into the locking groove (36). A return spring (37) is connected to one side of the sliding sleeve (13). The other end of the return spring (37) is in contact with the reset plate (12).

8. The liquid cooling device for power battery according to claim 7, characterized in that: The connecting pipe (3) has a guide groove (38) on its outer side, and the sliding sleeve (13) has a guide block (39) fixedly installed on its inner side. The guide block (39) is slidably disposed in the guide groove (38).

Images