Adaptive power battery heat pipe heat dissipation device

Abstract

The invention relates to an adaptive power battery heat pipe heat dissipation device, and relates to the technical field of power battery heat dissipation. Comprising a battery shell and battery cells arranged in the battery shell at equal intervals, and further comprises four sets of positioning blocks arranged at equal intervals, heat dissipation plates are further arranged among the four sets of positioning blocks respectively, the heat dissipation plates are attached to the outer walls of the battery cells, and a plurality of heat dissipation components are further installed at the ends, away from the battery cells, of the heat dissipation plates at equal intervals; according to the heat dissipation component, heat dissipation of the power battery is achieved through the heat pipe, the heat pipe is distributed in a conical structure, heat diffusion is greatly improved, further, the heat pipe can automatically adjust the heat dissipation area of the condensation end of the heat pipe according to the heat dissipation strength of the power battery, and therefore adjustment of the heat dissipation performance of the heat pipe is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of power battery heat dissipation, and in particular to an adaptive power battery heat pipe heat dissipation device. Background Art

[0002] The power battery heat pipe cooling device is a device used to dissipate heat from the power battery. It conducts the heat generated in the power battery to the radiator through a heat pipe, and then dissipates the heat into the air to keep the operating temperature of the battery within an appropriate range.

[0003] A heat pipe is a heat transfer element that uses liquid to transfer heat in a pipe. It transfers heat through the vaporization and condensation of liquid inside the pipe, and has the advantages of efficient heat transfer, energy saving, and environmental protection. In power batteries, heat pipes can effectively transfer the heat generated by the battery to the radiator, improve heat dissipation efficiency, and avoid safety hazards caused by overheating of the battery.

[0004] For example, the Chinese patent with publication number CN110635198A discloses that the present invention relates to the field of thermal management technology of power batteries, and provides a heat dissipation device for power batteries, which includes: a plurality of fin assemblies arranged at intervals and a plurality of heat pipe assemblies arranged at intervals; a plurality of battery units arranged in an array in coordination with the heat pipe assemblies are arranged between the bottoms of adjacent heat pipe assemblies, and a fin assembly is arranged between the tops of adjacent heat pipe assemblies. By arranging the fin assembly and the heat pipe assembly, during the process of heat generated by battery charging or discharging, the heat is quickly extracted through the heat pipe assembly attached to the battery and transmitted to the fin assembly, thereby achieving heat dissipation of the battery and effectively solving problems such as uneven temperature distribution and local overheating of the battery.

[0005] However, the above heat dissipation device still has some shortcomings in actual use: 1. In the prior art, battery heat dissipation is achieved to effectively solve the problems of uneven battery temperature distribution and local overheating. However, power batteries need to be used for a long time. In summer, the power batteries can effectively dissipate heat. However, when winter comes and the weather outside is cold, the heat of the power batteries is discharged, causing the power batteries to be affected by the winter temperature and their performance to decline. Therefore, the prior art cannot achieve adaptive adjustment of the battery heat dissipation performance.

[0006] 2. Furthermore, in the prior art, the thermal conductivity of the heat pipe for achieving heat dissipation of the battery is constant, and the thermal conductivity of the heat pipe cannot be adjusted, resulting in the thermal conductivity of the heat pipe being relatively single and unable to adjust its thermal conductivity.

[0007] Therefore, based on the above-stated viewpoints, there is still room for improvement in the existing heat dissipation devices. Summary of the invention

[0008] In order to solve the above problems, the present invention provides an adaptive power battery heat pipe heat dissipation device, which adopts the following technical solutions: An adaptive power battery heat pipe cooling device comprises a battery shell and battery cells arranged at equal intervals inside the battery shell, and also comprises: four groups of positioning blocks arranged at equal intervals, heat dissipation plates are respectively provided between the four groups of positioning blocks, the heat dissipation plates are attached to the outer wall of the battery cell, and a plurality of heat dissipation components are also installed at equal intervals at one end of the heat dissipation plate away from the battery cell.

[0009] The heat dissipation component includes a plurality of heat pipes distributed in a cone shape, the evaporation ends of the heat pipes are gathered together and hingedly arranged on a heat dissipation plate, the condensation ends of the heat pipes are away from the battery cells and approach the battery shell, and abut against the battery shell to dissipate heat outwards.

[0010] Preferably, a right-angled movable groove is provided in the positioning block, a plurality of fixed columns are slidably provided in the movable groove, and a horizontal sliding groove for the fixed columns to slide is provided in the movable groove, a plurality of vertically distributed mounting blocks are slidably provided on the fixed columns, a mounting groove is provided on one side of the mounting block, and the heat sink is arranged in the mounting slot of the mounting block.

[0011] Preferably, a telescopic center rod is hinged between the two positioning blocks on the same side in the length direction of the battery shell, and a telescopic center rod is also hinged between the two positioning blocks on the same side in the width direction of the battery shell. A telescopic motor is installed on the positioning block on one side, and the telescopic motor is arranged on the inner wall of the battery shell.

[0012] Preferably, the telescopic center rod is a telescopic structure.

[0013] Preferably, a No. 1 adjusting tension spring connected to both ends of the fixing column is provided in the horizontal slide groove of the positioning block, and the No. 1 adjusting tension spring has a tendency to squeeze the mounting block toward the direction of the battery cell.

[0014] The sliding sleeve on the fixed column is provided with a second adjusting tension spring for controlling the displacement of the heat sink.

[0015] Preferably, a separator is also provided on the heat sink, and the separator includes a separation plate, and a separation plate is connected between the spaced apart positioning blocks among a plurality of positioning blocks on the same side inside the battery housing, and an electric push rod is connected to the separation plate, and the electric push rod is horizontally distributed.

[0016] Preferably, a connecting column is provided in the middle of the heat pipe in which several of the heat dissipation components are distributed in a cone shape, and a fan for blowing air outwards is provided on the connecting column. The fan is provided with an integrally connected motor, and an adjustment ring is also slidably installed on the connecting column. Adjustment rods are provided at equal intervals in the circumferential direction of the adjustment ring, and the end of the adjustment rod away from the adjustment ring is connected to the side wall of the heat pipe.

[0017] An adjusting spring is sleeved on the connecting column, and the position of the adjusting ring is controlled by the adjusting spring.

[0018] Preferably, the heat pipe includes a sealed shell, a No. 1 wick, a thermally deformable metal sheet and a No. 2 wick, the sealed shell is arranged on a heat dissipation plate, the No. 1 wick is arranged on an inner wall of the sealed shell, and the No. 2 wick rests against the No. 1 wick.

[0019] A plurality of heat-deformable metal sheets are arranged at equal intervals on the inner wall of the sealed shell, and one end of the heat-deformable metal sheet is connected to one side of the second liquid-absorbing core.

[0020] Preferably, a plurality of heat spreaders are provided between the battery cells, and the heat spreaders and the heat sink are in contact with each other.

[0021] Preferably, the connecting column is a hollow structure, and is provided with a strip groove for sliding the adjusting ring. A plurality of deformable pressing plates are installed at equal intervals in the circumferential direction inside the connecting column, and the deformable ends of the deformable pressing plates abut against the adjusting ring.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present invention realizes modular composition of the heat sink through the cooperation of the heat sink and the positioning block, which can not only ensure the heat dissipation performance of the power battery, but also can be modularly disassembled when the power battery is repaired or replaced. The entire heat sink cannot be disassembled, which greatly improves the efficiency and economy of power battery maintenance.

[0023] 2. The heat dissipation component of the present invention realizes heat dissipation of the power battery temperature through heat pipes, and the heat pipes are distributed in a conical structure, which greatly improves the heat diffusion efficiency. Furthermore, the present invention can also increase the heat dissipation area of ​​the condensation end of the heat pipe, and adjust the heat dissipation performance by adjusting its heat dissipation area.

[0024] 3. The separator of the present invention can realize the contact and separation between the heat sink and the battery cell. When the external environment is poor, the electric push rod is started, and the output end of the electric push rod drives the heat sinks that are spaced apart from each other among the plurality of heat sinks to move away from the battery cell through the separation plate. At this time, gaps appear between some heat sinks and the battery cells, and the two are separated, so that some heat sinks cannot start the heat dissipation function, which indirectly realizes the reduction of heat dissipation power, ensures the heat dissipation of the power battery in winter, and avoids the heat dissipation effect of the power battery being too strong, resulting in the loss of temperature of the power battery.

[0025] Fourth, the heat pipe of the present invention can automatically adjust the heat dissipation area of ​​the condensation end according to the intensity of heat dissipation of the power battery, thereby achieving the adjustment of the heat dissipation performance of the heat pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 It is a schematic diagram of the main structure of the power battery of the present invention.

[0028] Figure 2 It is a schematic diagram of the structure among the battery housing, battery core and heat dissipation component of the present invention.

[0029] Figure 3 It is a schematic diagram of the structure between the battery core and the heat dissipation component of the present invention from a first perspective.

[0030] Figure 4 It is a schematic diagram of the structure between the battery core and the heat dissipation component from a second viewing angle of the present invention.

[0031] Figure 5 It is a plan view between the battery core and the heat dissipation component of the present invention.

[0032] Figure 6 It is a schematic diagram of the structure between the positioning block and the heat sink of the present invention.

[0033] Figure 7 It is a schematic diagram of the structure between the positioning block and the separator of the present invention.

[0034] Figure 8 The present invention Figure 7 A local enlarged view of point A in the figure.

[0035] Fig. 9 It is a schematic diagram of the structure between the telescopic center rod and the positioning block of the present invention.

[0036] Fig.10 It is a schematic diagram of the structure between the heat dissipation component and the heat dissipation plate of the present invention.

[0037] Fig.11 It is a schematic diagram of the structure between the heat dissipation component and the heat pipe of the present invention.

[0038] Fig.12 It is a schematic diagram of the structure among the strip groove, the deformable pressing sheet and the adjusting ring of the present invention.

[0039] Fig.13 It is a schematic diagram of the structure among the sealed shell, the first liquid absorbent core, the second liquid absorbent core and the thermally deformed metal sheet of the present invention.

[0040] Fig.14 The present invention Fig.13 A local enlarged view of point B in FIG.

[0041] Explanation of the reference numerals in the accompanying drawings: 1. battery casing; 10. battery cell; 2. positioning block; 3. heat sink; 4. heat dissipation component; 5. heat pipe; 20. movable groove; 21. fixed column; 22. horizontal slide groove; 23. mounting block; 24. telescopic center rod; 25. telescopic motor; 6. No. 1 adjusting tension spring; 7. No. 2 adjusting tension spring; 8. separator; 80. separation plate; 81. electric push rod; 40. connecting column; 41. fan; 42. adjusting ring; 43. adjusting rod; 44. adjusting spring; 50. sealing casing; 51. No. 1 liquid absorbent core; 52. No. 2 liquid absorbent core; 53. thermally deformed metal sheet; 9. heat spreader; 400. strip groove; 401. deformable pressing sheet. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-Figure 14 This application is described in further detail.

[0043] The embodiment of the present application discloses an adaptive power battery heat pipe cooling device; it is mainly used in the process of heat dissipation of power batteries.

[0044] In the prior art, battery heat dissipation is achieved to effectively solve the problems of uneven battery temperature distribution and local overheating. However, power batteries need to be used for a long time. In summer, the power batteries can effectively dissipate heat. However, when winter comes and the weather outside is cold, the heat of the power batteries is discharged, causing the power batteries to be affected by the winter temperature and their performance to decline. Therefore, the prior art cannot achieve adaptive adjustment of the battery heat dissipation performance, which results in the heat inside the battery being unable to maintain itself in a suitable environment to work in winter, resulting in poor working efficiency of the power battery.

[0045] Furthermore, in the prior art, the thermal conductivity of the heat pipe 5 for heat dissipation of the battery is constant, and the thermal conductivity of the heat pipe 5 cannot be adjusted, resulting in the thermal conductivity of the heat pipe 5 being relatively simple and unable to adjust its thermal conductivity.

[0046] Embodiment 1: Reference Figure 1 and Figure 2 As shown, it is a schematic diagram of the main structure of the heat pipe 5 heat dissipation device in the present application; an adaptive power battery heat pipe heat dissipation device includes a battery housing 1 and battery cells 10 arranged at equal intervals inside the battery housing 1.

[0047] The main function of a power battery is to store and release electrical energy, providing a power source for electric vehicles. It converts the stored chemical energy into electrical energy through chemical reactions to drive the vehicle. The battery cell 10 is the basic unit of the power battery, responsible for storing and releasing electrical energy. The battery cell consists of a positive electrode, a negative electrode, an electrolyte and a diaphragm, and achieves efficient use of energy through the charging and discharging process. High-quality battery cells can provide higher energy density, extend the driving range, reduce battery aging and performance degradation, and reduce replacement frequency and usage costs.

[0048] The battery casing 1 is mainly used for the safety of the battery cell 10 to ensure the safety of the battery cell 10 .

[0049] See also Figure 2 and Figure 3 As shown, it is a schematic diagram of the structure of the heat sink 3 in the present application; four groups of positioning blocks 2 are arranged at equal intervals, and heat sinks 3 are respectively provided between the four groups of positioning blocks 2. The heat sinks 3 are attached to the outer wall of the battery cell 10, and a plurality of heat sink components 4 are also installed at equal intervals on one end of the heat sink 3 away from the battery cell 10.

[0050] The heat dissipation component 4 includes a plurality of heat pipes 5 distributed in a cone shape. The evaporation ends of the heat pipes 5 are gathered together and arranged on the heat dissipation plate 3. The condensation ends of the heat pipes 5 are away from the battery cells 10 and approach the battery casing 1 and abut against the battery casing 1.

[0051] See also Figure 4 and Figure 5 As shown, a plurality of heat spreaders 9 are arranged between the battery cells 10 , and the heat spreaders 9 and the heat sink 3 are in contact with each other.

[0052] The positioning blocks 2 are arranged at the four corners of the battery housing 1, and the heat sinks 3 are arranged at equal intervals around the battery cells 10. When the battery is working, the battery will generate a large amount of heat energy, which will diffuse outward, and then the heat will be absorbed by the heat spreader 9, and then the heat will be transferred to the heat sink 3 through the heat spreader 9, so that the heat sink 3 absorbs the heat energy generated by the battery cells 10, and the heat energy is then received by the evaporation end of the heat pipe 5, and the heat quickly moves to the condensation end through the evaporation end of the heat pipe 5, and transfers the heat to the outside of the battery housing 1, ensuring the timely diffusion of heat, thereby controlling the temperature of the battery cells 10, and ensuring that the battery cells 10 can work in a suitable environment, thereby maintaining their optimal performance.

[0053] However, in order to ensure the stability of heat dissipation, the present application also needs to limit the heat dissipation plate 3 and the heat spreader 9 to ensure that the heat dissipation plate 3 and the heat spreader 9 can evenly contact the surface of the battery cell 10.

[0054] See also Figure 6 and Figure 7As shown, a right-angled movable groove 20 is provided in the positioning block 2, a plurality of fixed columns 21 are slidably provided in the movable groove 20, and a horizontal slide groove 22 for the fixed columns 21 to slide is provided in the movable groove 20, a plurality of vertically distributed mounting blocks 23 are slidably provided on the fixed columns 21, a mounting groove is provided on one side of the mounting block 23, and the heat sink 3 is hinged in the mounting slot of the mounting block 23.

[0055] A first adjusting tension spring 6 connected to both ends of the fixing column 21 is arranged in the horizontal slide groove 22 of the positioning block 2 .

[0056] The sliding sleeve on the fixing column 21 is provided with a second adjusting tension spring 7 for controlling the displacement of the heat sink 3 .

[0057] It should be noted that the heat sink 3 is rotatably disposed on the fixing column 21 , and the fixing column 21 can be slidably disposed in the movable groove 20 of the positioning block 2 .

[0058] A No. 2 adjusting tension spring 7 is arranged on the fixed column 21, and the No. 2 adjusting tension spring 7 is used to squeeze the heat sink 3 so that the heat sink 3 can be against the battery cell 10, ensuring that the heat of the battery cell 10 is quickly transferred to the heat sink 3 when the battery cell 10 is dissipating heat. In the initial state, the No. 2 adjusting tension spring 7 has an outward elastic force, so that the No. 2 adjusting tension spring 7 squeezes the heat sink 3.

[0059] The mounting block 23 is made of insulating material to prevent the battery cell 10 from leaking electricity when it is damaged.

[0060] The heat sink 3 is snap-fitted and installed inside the mounting block 23. The purpose is to facilitate the replacement of the heat sink 3. If the power battery is damaged during use, the damaged part of the power battery can be replaced, and the heat sink 3 at the corresponding part can be replaced separately, avoiding the overall replacement of all the heat sinks 3 in the power battery.

[0061] Through the cooperation of the heat sink 3 and the positioning block 2, the modular composition of the heat sink 3 is realized, which can not only ensure the heat dissipation performance of the power battery, but also can be modularly disassembled when the power battery is repaired or replaced. The entire heat dissipation device cannot be disassembled, which greatly improves the efficiency and economy of power battery maintenance.

[0062] See also Figure 7 , Figure 8 and Fig. 9As shown, it is a schematic diagram of the structure for adjusting the angle of the heat sink 3 in the present application. Specifically, as shown below, a telescopic center rod 24 is hinged between the two positioning blocks 2 on the length direction and on the same side of the battery casing 1, and a telescopic center rod 24 is also hinged between the two positioning blocks 2 on the width direction and on the same side of the battery casing 1. The middle part of the telescopic center rod 24 rotates and rests on the inner wall of the battery casing 1, and a telescopic motor 25 is installed on the positioning block 2 on one side, and the telescopic motor 25 is arranged on the inner wall of the battery casing 1.

[0063] During specific implementation, the telescopic motor 25 is started, and the telescopic motor 25 controls the positioning block 2 on one side of the inside of the battery casing 1 to move upward. At this time, the telescopic centering rod 24 on the positioning block 2 rotates around the center point of the middle, so that the two adjacent positioning blocks 2 near the positioning block 2 connected to the telescopic motor 25 move downward. At this time, the positioning block 2 diagonally opposite to the positioning block 2 connected to the telescopic motor 25 moves upward. At this time, the heat sink 3 between the positioning blocks 2 will tilt, and the two ends of the heat sink 3 are ensured to adjust the angle of the heat sink 3 through the mounting block 23 and the telescopic fixing column 21, while the positioning block 2 only rises and falls, and its position does not change.

[0064] When the heat sink 3 changes from the horizontal state in the initial state to the inclined state, the heat pipe 5 distributed in a cone shape on the heat sink 3 also tilts synchronously. The appropriate tilt angle can significantly improve the heat exchange efficiency of the heat pipe 5. For example, when nanofluid is used as the working fluid, when the tilt angle is 75°, the heat transfer coefficient and the maximum heat transfer power of the evaporation section and the condensation section are significantly improved. In addition, when the tilt angle is 60°, the maximum heat transfer of the heat exchanger can reach about 1700W, indicating that the appropriate tilt angle can optimize the heat exchange performance.

[0065] Secondly, enhance heat transfer: The adjustment of the tilt angle can improve the flow characteristics inside the heat pipe 5, thereby enhancing heat transfer. For example, the study found that when the tilt angle is 120°, the heat transfer coefficient is the highest, which is suitable for application scenarios that require high heat transfer. In addition, the increase in the tilt angle helps to thin the liquid film in the condensation section, thereby enhancing the evaporation and condensation process. In addition, reducing thermal resistance: A proper inclination angle can reduce the total thermal resistance of the heat pipe 5. For example, when the inclination angle is 60°, the thermal resistance value is the lowest, because gravity assists the liquid to flow back to the evaporator. However, too large an inclination angle may increase the difficulty of liquid reflux, resulting in increased thermal resistance.

[0066] Replay Figure 7As shown, further, in order to ensure that the heat dissipation device of the present application can adapt to different weather conditions, the present application also proposes a separator 8, which is specifically shown as follows: a separator 8 is also provided on the heat dissipation plate 3, and the separator 8 includes a separation plate 80, and a separation plate 80 is connected between the spaced-apart positioning blocks 2 among several positioning blocks 2 on the same side inside the battery housing 1, and an electric push rod 81 is connected to the separation plate 80.

[0067] In the initial state, the plurality of heat dissipation plates 3 along the height direction of the positioning block 2 are all attached to the outer wall of the battery cell 10. This is the maximum limit heat dissipation state of the present application, ensuring the heat dissipation of the battery cell 10. However, when winter comes, the external environment is at a relatively low temperature. If the maximum heat dissipation state is still maintained at this time, the temperature of the battery cell 10 will seriously drop, making it unable to reach the optimal working state, and even affecting the service life of the power battery.

[0068] Therefore, the present application proposes a separator 8. When the external environment is poor, the electric push rod 81 is started, and the output end of the electric push rod 81 drives the heat sinks 3 that are spaced apart from each other among the plurality of heat sinks 3 to move away from the battery cell 10 through the separation plate 80. At this time, gaps appear between some of the heat sinks 3 and the battery cells 10, and the two are separated, so that some of the heat sinks 3 cannot start the heat dissipation function, which indirectly achieves the reduction of the heat dissipation power, ensures the heat dissipation of the power battery in winter, and avoids the heat dissipation effect of the power battery being too strong, resulting in the power battery losing temperature.

[0069] Reference Fig.10 , Fig.11 and Fig.12 As shown, that is, a schematic diagram of the structure of the heat pipe 5 for dissipating heat in the present invention; specifically, a connecting column 40 is provided in the middle of the heat pipe 5 which is distributed in a cone among the plurality of heat dissipation components 4, and a fan 41 for blowing air outward is provided on the connecting column 40, and the fan 41 is provided with an integrally connected motor, and an adjusting ring 42 is also slidably installed on the connecting column 40, and adjusting rods 43 are provided at equal intervals in the circumferential direction of the adjusting ring 42, and the end of the adjusting rod 43 away from the adjusting ring 42 is connected to the side wall of the heat pipe 5.

[0070] An adjusting spring 44 is sleeved on the connecting column 40 , and the position of the adjusting ring 42 is controlled by the adjusting spring 44 .

[0071] The connecting column 40 is a hollow structure and is provided with a strip groove 400 for the adjustment ring 42 to slide. A plurality of deformable pressing plates 401 are installed at equal intervals in the circumferential direction inside the connecting column 40 , and the deformed ends of the deformable pressing plates 401 abut against the adjustment ring 42 .

[0072] In the present application, several groups of heat dissipation components 4 are provided, and each group of heat dissipation components 4 is provided with a plurality of heat pipes 5, and the heat pipes 5 are distributed in a cone shape, and the design of the evaporation end and the condensation end of the heat pipe 5 is very important. The evaporation end should be as close to the heat source as possible to quickly absorb heat; the condensation end needs to have sufficient heat dissipation area to effectively dissipate the heat to the environment.

[0073] Therefore, in the present application, the evaporation ends of the heat pipes 5 are close to each other for absorbing heat; and the condensation ends of the heat pipes 5 are tilted outward for dissipating heat.

[0074] In the initial state, the adjusting ring 42 is away from one end of the connecting column 40 and the fan 41 , and the deformed end of the deformable pressing sheet 401 abuts against the adjusting ring 42 .

[0075] During specific implementation, when the power battery starts working, a large amount of heat is generated during its operation, and the heat will cause the inside of the connecting column 40 to start heating up. When the temperature of the deformed end of the deformable pressing plate 401 rises to the limit temperature it can withstand, the deformable pressing plate 401 starts to deform, and the deformed end of the deformable pressing plate 401 squeezes the adjustment ring 42, so that the adjustment ring 42 slides along the connecting column 40, and the adjustment ring 42 moves to one side of the fan 41. At this time, the adjustment ring 42 squeezes the condensation end of the heat pipe 5 through the adjustment rod 43, so that the condensation end of the heat pipe 5 expands outward, thereby increasing the heat dissipation area of ​​the condensation end, greatly improving its heat dissipation efficiency and performance.

[0076] Embodiment 2: Based on Embodiment 1, in order to further ensure the heat dissipation efficiency of the heat pipe 5, the present application further proposes a heat pipe 5; Fig.13 and Fig.14 As shown, the heat pipe 5 includes a sealed shell 50, a first wick 51, a thermally deformed metal sheet 53 and a second wick 52. The sealed shell 50 is arranged on the heat dissipation plate 3, the first wick 51 is arranged on the inner wall of the sealed shell 50, and the second wick 52 is against the first wick 51.

[0077] A plurality of heat-deformable metal sheets 53 are arranged at equal intervals on the inner wall of the sealed housing 50 , and one end of the heat-deformable metal sheet 53 is connected to one side of the second liquid absorbent core 52 .

[0078] When the evaporation end of the heat pipe 5 begins to absorb heat, the heat moves to its condensation end through the No. 1 wick 51. However, the size of the No. 1 wick 51 is constant, so its maximum heat dissipation efficiency is constant. In order to improve its heat dissipation performance, the present application also proposes a No. 2 wick 52.

[0079] In the initial state, the second absorbent core 52 is not in contact with the first absorbent core 51. When the power battery dissipates heat, the heat will be transferred to the thermally deformable metal sheet 53. When the thermally deformable metal sheet 53 is deformed, the second absorbent core 52 rests on the first absorbent core 51, so that the second absorbent core 52 and the first absorbent core 51 form a whole, which greatly improves the efficiency of heat conversion and ultimately improves the heat dissipation performance of the heat pipe 5.

[0080] Embodiment 2:

[0081] Reference Figure 8 As shown, on the basis of Example 1, in order to ensure the diversity of the angle adjustment of the heat pipe 5, the present application further proposes a plurality of deformable pressing sheets 401 with different performances. Since the temperatures at which the deformable pressing sheets 401 made of different materials deform are also different, the deformable pressing sheets 401 arranged at equal intervals inside the connecting column 40 can be replaced with deformable pressing sheets 401 made of different materials. For the sake of ease of description, they are named here as deformable pressing sheet No. 1 401, deformable pressing sheet No. 2 401 and deformable pressing sheet No. 3 401; and the heat-resistant temperatures of the three deformable pressing sheets 401 are different.

[0082] When the temperature on the heat sink 3 is low, there is no need to adjust the angle of the heat pipe 5. When the temperature of the heat sink 3 rises to the intermediate temperature, the first deformable pressing plate 401 begins to deform, and the first deformable pressing plate 401 lifts the adjustment ring 42. At this time, the adjustment ring 42 squeezes the condensation end of the heat pipe 5 through the adjustment rod 43, so that the condensation end spreads outward.

[0083] When the temperature of the heat sink 3 rises to a high temperature, the second deformable pressing plate 401 begins to deform, and the second deformable pressing plate 401 lifts the adjustment ring 42. At this time, the adjustment ring 42 squeezes the condensation end of the heat pipe 5 through the adjustment rod 43, so that the condensation end further diffuses outward on the basis of the above.

[0084] When the temperature of the heat sink 3 rises to the maximum temperature, the No. 3 deformable pressing plate 401 begins to deform, and the No. 3 deformable pressing plate 401 lifts the adjusting ring 42. At this time, the adjusting ring 42 squeezes the condensing end of the heat pipe 5 through the adjusting rod 43, so that the condensing end further diffuses outward on the basis of the above, and the position moves outward to the maximum range, and several heat pipes 5 are in an umbrella-shaped structure.

[0085] When working: The first step is that when the battery is working, the battery will generate a large amount of heat energy, which will diffuse outward, and then the heat will be absorbed by the heat spreader 9, and then the heat will be transferred to the heat sink 3 through the heat spreader 9, so that the heat sink 3 absorbs the heat energy generated by the battery cell 10, and then the heat energy is absorbed by the evaporation end of the heat pipe 5, and the heat quickly moves to the condensation end through the evaporation end of the heat pipe 5, and transfers the heat to the outside of the battery casing 1, ensuring the timely diffusion of heat, thereby controlling the temperature of the battery cell 10, and ensuring that the battery cell 10 can work in a suitable environment, thereby maintaining its optimal performance.

[0086] Step 2: If the power battery is damaged during use, the damaged part of the power battery can be replaced, and the heat sink 3 at the corresponding part can be replaced separately, avoiding the overall replacement of all the heat sinks 3 in the power battery.

[0087] Step 3: Start the telescopic motor 25, which controls the positioning block 2 on one side of the battery housing 1 to move upward. At this time, the telescopic centering rod 24 on the positioning block 2 rotates around the center point in the middle, so that the two adjacent positioning blocks 2 near the positioning block 2 connected to the telescopic motor 25 move downward. At this time, the positioning block 2 diagonally opposite to the positioning block 2 connected to the telescopic motor 25 moves upward. At this time, the heat sink 3 between the positioning blocks 2 will tilt, and the heat pipes 5 distributed in a cone shape on the heat sink 3 will also tilt synchronously; the appropriate tilt angle can significantly improve the heat exchange efficiency of the heat pipe 5.

[0088] Step 4: When the external environment is poor, the electric push rod 81 is started, and the output end of the electric push rod 81 drives the heat sinks 3 spaced apart from each other among the plurality of heat sinks 3 to move away from the battery cell 10 through the separation plate 80. At this time, gaps appear between some heat sinks 3 and the battery cells 10, and the two are separated, so that some heat sinks 3 cannot start the heat dissipation function, which indirectly achieves the reduction of heat dissipation power, ensures the heat dissipation of the power battery in winter, and avoids the heat dissipation effect of the power battery being too strong, resulting in the loss of temperature of the power battery.

[0089] Step 5: When the power battery starts to work, a large amount of heat is generated during its operation, and the heat will cause the inside of the connecting column 40 to start to heat up. When the temperature of the deformed end of the deformable pressing plate 401 rises to the limit temperature it can withstand, the deformable pressing plate 401 begins to deform, and the deformed end of the deformable pressing plate 401 squeezes the adjusting ring 42, so that the adjusting ring 42 slides along the connecting column 40, and the adjusting ring 42 moves to one side of the fan 41. At this time, the adjusting ring 42 squeezes the condensing end of the heat pipe 5 through the adjusting rod 43, so that the condensing end of the heat pipe 5 expands outward, thereby increasing the heat dissipation area of ​​the condensing end, greatly improving the heat dissipation efficiency and performance.

[0090] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An adaptive power battery heat pipe heat dissipation device, comprising a battery housing (1) and battery cells (10) arranged at equal intervals inside the battery housing (1), characterized in that: Also includes: Four groups of positioning blocks (2) are arranged at equal intervals, and heat dissipation plates (3) are respectively provided between the four groups of positioning blocks (2). The heat dissipation plates (3) are attached to the outer wall of the battery cell (10), and a plurality of heat dissipation components (4) are also installed at equal intervals at one end of the heat dissipation plate (3) away from the battery cell (10); The heat dissipation component (4) comprises a plurality of heat pipes (5) distributed in a conical shape, wherein the evaporation ends of the heat pipes (5) are gathered together and hingedly arranged on the heat dissipation plate (3), and the condensation ends of the heat pipes (5) are away from the battery core (10) and approach the battery housing (1), and abut against the battery housing (1) to dissipate heat outwards.

2. The adaptive power battery heat pipe heat dissipation device according to claim 1, characterized in that: The positioning block (2) is provided with a right-angled movable groove (20), a plurality of fixed columns (21) are slidably arranged in the movable groove (20), and a horizontal sliding groove (22) for the fixed columns (21) to slide is provided in the movable groove (20), a plurality of vertically distributed mounting blocks (23) are slidably arranged on the fixed columns (21), a mounting groove is provided on one side of the mounting block (23), and the heat sink (3) is arranged in the mounting groove of the mounting block (23).

3. The adaptive power battery heat pipe heat dissipation device according to claim 1, characterized in that: A telescopic center rod (24) is hingedly connected between two positioning blocks (2) on the same side in the length direction of the battery housing (1), and a telescopic center rod (24) is also hingedly connected between two positioning blocks (2) on the same side in the width direction of the battery housing (1). A telescopic motor (25) is installed on the positioning block (2) on one side, and the telescopic motor (25) is arranged on the inner wall of the battery housing (1).

4. The adaptive power battery heat pipe heat dissipation device according to claim 3, characterized in that: The telescopic center rod (24) is a telescopic structure.

5. The adaptive power battery heat pipe heat dissipation device according to claim 1, characterized in that: A first adjusting tension spring (6) connected to both ends of the fixing column (21) is provided in the horizontal sliding groove (22) of the positioning block (2), and the first adjusting tension spring (6) has a tendency to press the mounting block (23) toward the direction of the battery cell (10); The sliding sleeve on the fixed column (21) is provided with a second adjusting tension spring (7) for controlling the displacement of the heat dissipation plate (3).

6. The adaptive power battery heat pipe heat dissipation device according to claim 1, characterized in that: A separator (8) is also provided on the heat sink (3), the separator (8) comprising a separator plate (80), the separator plates (80) being connected between the spaced apart positioning blocks (2) among a plurality of positioning blocks (2) on the same side inside the battery housing (1), the separator plates (80) being connected to electric push rods (81), the electric push rods (81) being distributed horizontally.

7. The adaptive power battery heat pipe heat dissipation device according to claim 1, characterized in that: A connecting column (40) is provided in the middle of a heat pipe (5) on which a plurality of heat dissipation components (4) are distributed in a conical shape. A fan (41) for blowing air outward is provided on the connecting column (40). The fan (41) is provided with an integrally connected motor. An adjusting ring (42) is also slidably mounted on the connecting column (40). Adjusting rods (43) are provided at equal intervals in a circumferential direction of the adjusting ring (42). One end of the adjusting rod (43) away from the adjusting ring (42) is connected to a side wall of the heat pipe (5); An adjusting spring (44) is sleeved on the connecting column (40), and the position of the adjusting ring (42) is controlled by the adjusting spring (44).

8. The adaptive power battery heat pipe heat dissipation device according to claim 1, characterized in that: The heat pipe (5) comprises a sealed shell (50), a first liquid wick (51), a thermally deformable metal sheet (53), and a second liquid wick (52); the sealed shell (50) is arranged on the heat dissipation plate (3); the first liquid wick (51) is arranged on the inner wall of the sealed shell (50); and the second liquid wick (52) abuts against the first liquid wick (51); A plurality of heat-deformable metal sheets (53) are arranged at equal intervals on the inner wall of the sealed housing (50), and one end of the heat-deformable metal sheet (53) is connected to one side of the second liquid absorbent core (52).

9. The adaptive power battery heat pipe heat dissipation device according to claim 1, characterized in that: A plurality of heat spreaders (9) are also arranged between the battery cells (10), and the heat spreaders (9) and the heat dissipation plates (3) are in contact with each other.

10. The adaptive power battery heat pipe cooling device according to claim 7, characterized in that: The connecting column (40) is a hollow structure, and is provided with a strip groove (400) for the adjustment ring (42) to slide on. A plurality of deformable pressing sheets (401) are installed at equal intervals in the circumferential direction inside the connecting column (40), and the deformable ends of the deformable pressing sheets (401) are against the adjustment ring (42).

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