Lithium ion battery pack with heat dissipation function

Abstract

The invention relates to the technical field of battery packs, and discloses a lithium ion battery pack with a heat dissipation function, the lithium ion battery pack comprises a battery pack shell and a battery pack cover which are arranged outside a plurality of lithium battery packs, and the middle part of the bottom surface of the battery pack shell and the middle part of the bottom surface of the battery pack cover are fixedly connected with temperature sensors; a heightening frame is fixedly connected to the inner wall of the battery pack shell, the plurality of lithium battery packs are all located in the heightening frame, and heat dissipation openings are formed in the side walls of the two ends of the battery pack shell in a penetrating mode. According to the lithium ion battery pack with the heat dissipation function, when the lithium battery pack in the battery pack shell needs to be cooled, only hot air in the battery pack shell needs to be blown into the external environment from the heat dissipation opening through the heat dissipation mechanism, and the lithium ion battery pack is convenient, rapid and easy to operate; the multiple lithium battery packs can be in a suspended state, so that air circulation in the battery pack shell is facilitated, temperature monitoring of the temperature sensor is facilitated, and the heat dissipation effect can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery packs, and particularly to a lithium-ion battery pack with a heat dissipation function. Background Art

[0002] A lithium-ion battery pack is a power system composed of one or more lithium-ion batteries, and usually also includes a circuit for managing the charging and discharging process of the battery. Lithium-ion batteries are widely used in various portable electronic devices (such as mobile phones, laptops), electric vehicles, aerospace and other fields due to their advantages of high energy density, long life and light weight.

[0003] Currently, the patent with the publication number CN222071989U discloses a lithium-ion battery and battery pack, including a battery cell group. An insulating film for insulating and protecting the battery cell group is arranged outside the battery cell group, and a rubber plate and an aluminum shell are sequentially arranged outside the insulating film. In this lithium-ion battery pack, the non-Newtonian fluid provided can improve the protection performance when the guard plate is impacted and stabbed by sharp objects. The rubber plate and the honeycomb layer can buffer the impact, and at the same time, can seal the outer wall of the sharp object when stabbed by a sharp object, reduce air flow, and reduce the occurrence of the battery cell group catching fire. Through the above methods, the protection performance of the battery cell group can be improved, and the normal use of the lithium battery pack can be prevented from being affected.

[0004] However, in the actual use process of the above lithium-ion battery pack, the following problems still exist: The ideal operating temperature range of lithium-ion batteries is usually between 20°C and 30°C. If the temperature rises beyond this range, the chemical reaction rate inside the battery will increase significantly, which may not only lead to overheating, but also affect its charging and discharging efficiency and cause a temporary reduction in battery capacity. However, most current lithium-ion battery packs mainly rely on heat dissipation fins for heat management and lack a more effective active heat dissipation mechanism, resulting in poor overall heat dissipation effect. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a lithium-ion battery pack with a heat dissipation function, which can monitor the temperature of several lithium battery packs inside the battery pack housing and the battery pack cover and dissipate heat in time.

[0006] To achieve the above object, the present invention provides the following technical solution: A lithium-ion battery pack with a heat dissipation function, including a battery pack housing and a battery pack cover installed outside a number of lithium battery packs. Temperature sensors are fixedly connected to the middle of the bottom surface of the battery pack housing and the middle of the bottom surface of the battery pack cover. A pad elevation frame is fixedly connected to the inner wall of the battery pack housing, and a number of lithium battery packs are all located inside the pad elevation frame. Heat dissipation openings are penetrated and provided on the side walls at both ends of the battery pack housing. Support components and heat dissipation mechanisms are connected to the inner walls at both ends of the battery pack housing. Lifting mechanisms are connected inside both support components, and sealing components are connected inside both lifting mechanisms. The other end of the sealing component is connected to the heat dissipation mechanism. A dust collection component is connected to the lower end of the heat dissipation mechanism, and the heat dissipation mechanism is aligned with the heat dissipation opening in a matching manner.

[0007] Further, the support component includes four support blocks, and one end of each of the four support blocks is fixedly connected to one side of the inner wall of the battery pack housing, and the lifting mechanism is connected to the four support blocks.

[0008] Further, the lifting mechanism includes a sliding rod, a lead screw, and a lifting motor. The outer wall of the lifting motor is fixedly connected to the side wall of one of the support blocks, the output shaft of the lifting motor is fixedly connected to one end of the lead screw, the lead screw and the sliding rod are arranged in parallel, the outer walls at both ends of the lead screw are respectively rotatably connected to the inner walls of the two support blocks, the outer walls at both ends of the sliding rod are respectively fixedly connected to the interiors of the other two support blocks, and both ends of the sealing component are respectively connected to the lead screw and the sliding rod.

[0009] Further, the heat dissipation mechanism includes a support box, a cross bracket, a dust-proof component, and a blowing component. One side of the support box is fixedly connected to one side of the inner wall of the battery pack housing. A through opening is penetrated and provided on the side wall of the support box, and the through opening is aligned with the heat dissipation opening in a matching manner. The four ends of the cross bracket are fixedly connected to the inner wall of the end of the through opening away from the heat dissipation opening, the middle of the cross bracket is connected to the blowing component, the dust-proof component is connected to the support box, and the dust-proof component is located between the cross bracket and the heat dissipation opening. The sealing component is located on both sides of the dust-proof component. The bottom surface of the support box is connected to the dust collection component, and the sealing component and the dust-proof component are aligned with the dust collection component in a matching manner.

[0010] Further, the blowing component includes a heat dissipation motor and a fan blade. The outer wall of the heat dissipation motor is fixedly connected to the side wall of the middle of the cross bracket, the output shaft of the heat dissipation motor is fixedly connected to the central axis of the fan blade, and the heat dissipation motor and the fan blade are both located between the cross bracket and the dust-proof component.

[0011] Furthermore, the dust-proof component includes a support frame, a dust-proof net, and two insertion blocks. A lifting opening is formed through the upper surface of one end of the support box close to the heat dissipation port, and insertion slots are formed on both sides of the upper end of the lifting opening. The inner wall of the support frame is fixedly connected to the outer wall of the dust-proof net, and both sides of the upper end of the support frame are respectively fixedly connected to the two insertion blocks. The two insertion blocks are respectively tightly connected to the two insertion slots through two first bolts. The outer walls of both sides of the support frame are respectively slidably connected to the inner walls of both sides of the lifting opening. The support frame, the dust-proof net, and the two insertion blocks are located between the heat dissipation port and the fan blades, and the sealing component is located on both sides of the support frame, the dust-proof net, and the two insertion blocks.

[0012] Furthermore, the sealing component includes a lifting plate and two sealing plates. Both ends of the lifting plate are respectively sleeved on the outer walls of the lead screw and the sliding rod. The inner wall of the lifting plate is threadedly connected to the outer wall of the lead screw, and the inner wall of the lifting plate is slidably connected to the outer wall of the sliding rod. The bottom surface of the lifting plate is fixedly connected to the upper ends of the two sealing plates. The side walls of the two sealing plates are respectively slidably connected to the inner walls of the lifting opening. The two sealing plates are respectively located on both sides of the support frame, the dust-proof net, and the two insertion blocks. A replacement opening is formed through the upper surface of the lifting plate, and the replacement opening is located directly above the support frame, the dust-proof net, and the two insertion blocks.

[0013] Furthermore, cleaning brushes are fixedly connected to the lower ends of the two sealing plates, and the two cleaning brushes are respectively slidably connected to both sides of the support frame and the dust-proof net.

[0014] Furthermore, the dust collection component includes a bottom box, a dust collection box, and a handle. The upper surface of the bottom box is fixedly connected to the bottom surface of the support box. A dust falling opening is formed through the upper surface of the bottom box. A wind deflector is rotatably arranged on the inner wall of the dust falling opening. Torsion springs are sleeved on the outer walls of the rotating shafts at both ends of the wind deflector, and both ends of the two torsion springs are respectively fixedly connected to the outer wall of the wind deflector and the inner wall of the dust falling opening. The dust falling opening is aligned with the lifting opening. The outer wall of the dust collection box is slidably connected to the inner wall of the bottom box. One end of the dust collection box located outside the bottom box is fixedly connected to the handle.

[0015] Furthermore, blocks are fixedly connected to both sides of one end of the dust collection box close to the handle, and bayonets are formed on both sides of one end of the bottom box close to the handle. The two blocks are respectively tightly connected to the two bayonets through two second bolts.

[0016] Compared with the prior art, the present invention has the following beneficial effects: For this lithium-ion battery pack with a heat dissipation function, by opening heat dissipation ports at both ends inside the battery pack housing and arranging two heat dissipation mechanisms matching the heat dissipation ports at both ends inside the battery pack housing, when it is necessary to dissipate heat from the lithium battery pack inside the battery pack housing, it is only necessary to blow the hot air inside the battery pack housing to the external environment through the heat dissipation mechanism, which is convenient, fast, and easy to operate.

[0017] This lithium-ion battery pack with a heat dissipation function can suspend several lithium battery packs by setting up a cushion rack inside the battery pack housing, thus facilitating the air circulation inside the battery pack housing. This not only facilitates the temperature monitoring of the temperature sensor but also improves the heat dissipation effect.

[0018] This lithium-ion battery pack with a heat dissipation function can seal the heat dissipation port by setting up a sealing component between the heat dissipation mechanism and the heat dissipation port. When the lithium-ion battery pack is in a low-temperature environment, it can block the heat dissipation port, thereby increasing the temperature of the lithium battery packs inside the battery pack housing and preventing external low temperature from entering the battery pack housing.

[0019] This lithium-ion battery pack with a heat dissipation function can automatically lift and lower the sealing component according to the temperature monitored by the temperature sensor by setting up a lifting mechanism between the battery pack housing and the sealing component, without manual control, which is more intelligent. Brief Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall appearance of the present invention; Figure 2 It is a schematic cross-sectional view of the battery pack housing and the battery pack cover of the present invention; Figure 3 It is an exploded schematic diagram of components such as the battery pack housing, the lithium battery packs, and the battery pack cover of the present invention; Figure 4 It is a detailed connection schematic diagram of components such as the dust collection component, the lifting mechanism, and the heat dissipation mechanism of the present invention; Figure 5 For the present invention Figure 4 It is a schematic cross-sectional view of each component in the present invention; Figure 6 For the present invention Figure 5 It is a schematic diagram of another perspective of each component in the present invention; Figure 7 For the present invention Figure 6 It is an enlarged schematic diagram of part A in the present invention; Figure 8 It is a detailed connection schematic diagram of the heat dissipation mechanism of the present invention; Figure 9 For the present invention Figure 8 It is an enlarged schematic diagram of part B in the present invention; Figure 10 It is a detailed connection schematic diagram of components such as the lifting mechanism and the sealing component of the present invention; Figure 11 It is a schematic diagram of the appearance of the wind deflector of the present invention.

[0021] In the figure: 1. Battery pack housing; 2. Battery pack cover; 3. Heat dissipation port; 4. Support box; 5. Sealing plate; 6. Lithium battery pack; 7. Lifting frame; 8. Temperature sensor; 9. Bottom box; 10. Dust collection box; 11. Lifting plate; 12. Replacement port; 13. Slide bar; 14. Support block; 15. Lead screw; 16. Lifting motor; 17. Cross bracket; 18. Heat dissipation motor; 19. Fan blade; 20. Through port; 21. Clamping block; 22. Handle; 23. Support frame; 24. Cleaning brush; 25. Ash dropping port; 26. Lifting port; 27. Bayonet; 28. Socket; 29. Dustproof net; 30. Insert block; 31. Windshield; 32. Torsion spring. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] Please refer to Figures 1-10 , a lithium-ion battery pack with a heat dissipation function, including a battery pack housing 1 and a battery pack cover 2 installed outside a number of lithium battery packs 6. Temperature sensors 8 are fixedly connected to the middle of the bottom surface of the battery pack housing 1 and the middle of the bottom surface of the battery pack cover 2. A lifting frame 7 is fixedly connected to the inner wall of the battery pack housing 1. A number of lithium battery packs 6 are all located inside the lifting frame 7. Heat dissipation ports 3 are penetrated and opened on the side walls at both ends of the battery pack housing 1. Support components and heat dissipation mechanisms are connected to the inner walls at both ends of the battery pack housing 1. Lifting mechanisms are connected to the inside of the two support components. Sealing components are connected to the inside of the two lifting mechanisms. The other end of the sealing component is connected to the heat dissipation mechanism. A dust collection component is connected to the lower end of the heat dissipation mechanism. The heat dissipation mechanism is matched and aligned with the heat dissipation port 3.

[0024] As Figures 1 to 10 shown, when the lithium-ion battery pack with a heat dissipation function in the present invention is in use, it can be carried out according to the following steps: Step 1: Install a number of lithium battery packs 6 on the lifting frame 7 inside the battery pack housing 1. Provide a height for a number of lithium battery packs 6 through the lifting frame 7, so as to facilitate the air circulation inside the battery pack housing 1 and the battery pack cover 2. Then, connect a number of lithium battery packs 6 in series according to the wiring requirements. Finally, lock the battery pack cover 2 and the battery pack housing 1 with bolts. After that, connect the last two exposed ends of the lithium battery pack 6 to external equipment.

[0025] Step 2: During the normal use of the lithium-ion battery pack, the two heat dissipation mechanisms located at both ends inside the battery pack housing 1 will blow the heat generated by the lithium battery pack 6 to the outside of the battery pack housing 1 through the two heat dissipation ports 3, so as to realize the heat dissipation inside the battery pack housing 1.

[0026] Step 3: During the use of the lithium-ion battery pack, it may be in a relatively cold environment. At this time, in order to avoid the influence of low temperature on the lithium battery pack 6 inside the battery pack housing 1, when the temperature sensor 8 detects that the temperature inside the battery pack housing 1 is below the set temperature (for example, when it is just started and the lithium battery pack 6 has not generated a high amount of heat), the lifting mechanism can be used to control the sealing component to descend at this time, so that the communication port between the heat dissipation mechanism and the heat dissipation port 3 can be sealed, thereby preventing the external low temperature from entering the inside of the battery pack housing 1 and damaging the lithium battery pack 6.

[0027] Step 4: When the temperature sensor 8 detects that the temperature inside the battery pack housing 1 reaches the set standard, the lifting mechanism is used to control the sealing component to rise at this time, so that the communication between the battery pack housing 1 and the external environment can be realized again. And at this time, because the lithium battery pack 6 has been fully operating and generates heat, it can keep warm by itself and can also cooperate with the heat dissipation mechanism to cool down, so as to ensure that the lithium battery pack 6 can always be at the standard temperature.

[0028] It should be specifically noted here that the above-mentioned lithium battery pack 6, battery pack housing 1 and battery pack cover 2 are all mature technologies inside the existing lithium-ion battery pack, so no detailed description will be given here.

[0029] As a preferred solution of the present invention, the support component includes four support blocks 14. One end of each of the four support blocks 14 is fixedly connected to one side of the inner wall of the battery pack housing 1, and the lifting mechanism is connected to the four support blocks 14.

[0030] More specifically, by setting the support blocks 14, support can be provided for the lifting mechanism, and at the same time, when the lifting mechanism controls the lifting of the sealing component, the lifting trajectory can be restricted so as not to tilt or shift.

[0031] As a preferred solution of the present invention, the lifting mechanism includes a slide bar 13, a lead screw 15 and a lifting motor 16. The outer wall of the lifting motor 16 is fixedly connected to the side wall of one of the support blocks 14. The output shaft of the lifting motor 16 is fixedly connected to one end of the lead screw 15. The lead screw 15 and the slide bar 13 are arranged in parallel. The outer walls at both ends of the lead screw 15 are respectively rotatably connected to the inner walls of two support blocks 14. The outer walls at both ends of the slide bar 13 are respectively fixedly connected to the interiors of the other two support blocks 14. Both ends of the sealing component are respectively connected to the lead screw 15 and the slide bar 13.

[0032] More specifically, when it is necessary to control the lifting of the sealing component, only need to turn on the lifting motor 16. The output shaft of the lifting motor 16 will drive the lead screw 15 to rotate. After that, the lead screw 15 cooperates with the slide bar 13 to drive the sealing component connected between the lead screw 15 and the slide bar 13 to lift.

[0033] As a preferred embodiment of the present invention, the heat dissipation mechanism includes a support box 4, a cross bracket 17, a dust prevention component and a blowing component. One side of the support box 4 is fixedly connected to one side of the inner wall of the battery pack housing 1. A through port 20 is formed through the side wall of the support box 4, and the through port 20 is aligned with the heat dissipation port 3. Four ends of the cross bracket 17 are fixedly connected to the inner wall of the end of the through port 20 away from the heat dissipation port 3. The middle of the cross bracket 17 is connected to the blowing component. The dust prevention component is connected to the support box 4 and is located between the cross bracket 17 and the heat dissipation port 3. Sealing components are located on both sides of the dust prevention component. The bottom surface of the support box 4 is connected to the dust collection component, and the sealing components and the dust prevention component are aligned with the dust collection component.

[0034] More specifically, when heat dissipation is required inside the battery pack housing 1, simply turn on the blowing component. After the blowing component is started, the heat inside the battery pack housing 1 can be blown towards the dust prevention component through the through port 20 of the support box 4, and then discharged from the heat dissipation port 3 to the external environment through the dust prevention component.

[0035] As a preferred embodiment of the present invention, the blowing component includes a heat dissipation motor 18 and a fan blade 19. The outer wall of the heat dissipation motor 18 is fixedly connected to the side wall of the middle part of the cross bracket 17. The output shaft of the heat dissipation motor 18 is fixedly connected to the central axis of the fan blade 19. Both the heat dissipation motor 18 and the fan blade 19 are located between the cross bracket 17 and the dust prevention component.

[0036] More specifically, when heat dissipation is required inside the battery pack housing 1, turn on the heat dissipation motor 18. After the heat dissipation motor 18 is started, the output shaft can drive the fan blade 19 to rotate. When the fan blade 19 rotates, hot air can be extracted from inside the battery pack housing 1 and blown into the external environment.

[0037] As a preferred embodiment of the present invention, the dust prevention component includes a support frame 23, a dustproof net 29 and two insertion blocks 30. A lifting port 26 is formed through the upper surface of the end of the support box 4 close to the heat dissipation port 3. Insertion ports 28 are formed on both sides of the upper end of the lifting port 26. The inner wall of the support frame 23 is fixedly connected to the outer wall of the dustproof net 29. Both sides of the upper end of the support frame 23 are respectively fixedly connected to the two insertion blocks 30. The two insertion blocks 30 are respectively fastened to the two insertion ports 28 through two first bolts. The outer walls of both sides of the support frame 23 are respectively slidably connected to the inner walls of both sides of the lifting port 26. The support frame 23, the dustproof net 29 and the two insertion blocks 30 are located between the heat dissipation port 3 and the fan blade 19. Sealing components are located on both sides of the support frame 23, the dustproof net 29 and the two insertion blocks 30.

[0038] More specifically, by setting the dust prevention component, it is possible to avoid impurities such as dust or lint in the external environment from entering the inside of the battery pack housing 1 through the heat dissipation port 3 without affecting the heat dissipation inside the battery pack housing 1.

[0039] In addition, after the dust-proof net 29 has been used for a period of time, a certain amount of dust or fluff will adhere to its surface, or even the dust-proof net 29 itself is damaged. At this time, the bolts between the two insertion blocks 30 and the two insertion ports 28 can be loosened, so that the support frame 23, the dust-proof net 29 and the two insertion blocks 30 can all be withdrawn from the lifting port 26 together, so that the support frame 23, the dust-proof net 29 and the two insertion blocks 30 can be repaired or replaced.

[0040] As a preferred embodiment of the present invention, the sealing assembly includes a lifting plate 11 and two sealing plates 5. The two ends of the lifting plate 11 are respectively sleeved on the outer walls of the lead screw 15 and the sliding rod 13. The inner wall of the lifting plate 11 is threadedly connected to the outer wall of the lead screw 15, and the inner wall of the lifting plate 11 is slidably connected to the outer wall of the sliding rod 13. The bottom surface of the lifting plate 11 is fixedly connected to the upper ends of the two sealing plates 5. The side walls of the two sealing plates 5 are both slidably connected to the inner wall of the lifting port 26. The two sealing plates 5 are respectively located on both sides of the support frame 23, the dust-proof net 29 and the two insertion blocks 30. A replacement port 12 is formed through the upper surface of the lifting plate 11, and the replacement port 12 is located directly above the support frame 23, the dust-proof net 29 and the two insertion blocks 30.

[0041] More specifically, when the lead screw 15 rotates, the lifting plate 11 connected thereto will be lifted and lowered under the action of the lead screw 15 and the sliding rod 13. Furthermore, the two sealing plates 5 connected to the lifting plate 11 will also be lifted and lowered together, so that the communication between the through port 20 and the heat dissipation port 3 can be sealed or opened.

[0042] As a preferred embodiment of the present invention, cleaning brushes 24 are fixedly connected to the lower ends of the two sealing plates 5, and the two cleaning brushes 24 are respectively slidably connected to the two sides of the support frame 23 and the dust-proof net 29.

[0043] More specifically, during the heat dissipation of the battery pack housing 1 by the heat dissipation mechanism, due to static electricity or other reasons, some external dust or fluff will adhere to the dust-proof net 29, thereby reducing the heat dissipation effect inside the battery pack housing 1. At this time, during the lifting and lowering of the two sealing plates 5 controlled by the lead screw 15, the dust or other sundries adhering to both sides of the surface of the dust-proof net 29 can be cleaned, and the cleaned sundries can be scraped into the dust collection assembly for collection.

[0044] As a preferred embodiment of the present invention, the dust collection assembly includes a bottom box 9, a dust collection box 10 and a handle 22. The upper surface of the bottom box 9 is fixedly connected to the bottom surface of the support box 4. A dust falling port 25 is formed through the upper surface of the bottom box 9. A wind baffle 31 is rotatably arranged on the inner wall of the dust falling port 25. Torsion springs 32 are sleeved on the outer walls of the rotating shafts at both ends of the wind baffle 31. The two ends of the two torsion springs 32 are respectively fixedly connected to the outer wall of the wind baffle 31 and the inner wall of the dust falling port 25. The dust falling port 25 is matched and aligned with the lifting port 26. The outer wall of the dust collection box 10 is slidably connected to the inner wall of the bottom box 9. One end of the dust collection box 10 located outside the bottom box 9 is fixedly connected to the handle 22.

[0045] More specifically, when the two cleaning brushes 24 descend, they will first abut against the upper surface of the wind baffle 31 inside the dust falling port 25. Subsequently, as the cleaning brushes 24 continue to descend, the wind baffle 31 will be pressed into the dust collection box 10 in a rotatable connection manner. As the wind baffle 31 is pushed away, the dust or other sundries adhering to the surface of the dustproof net 29 scraped by the cleaning brushes 24 can fall from the dust falling port 25 into the dust collection box 10 for collection. After the cleaning brushes 24 ascend, the wind baffle 31 will rotate back into the dust falling port 25 again under the action of the internal torsion springs 32, thereby blocking the communication between the dust collection box 10 and the lifting port 26.

[0046] As a preferred embodiment of the present invention, two clamping blocks 21 are fixedly connected to both sides of one end of the dust collection box 10 close to the handle 22. Two clamping ports 27 are formed on both sides of one end of the bottom box 9 close to the handle 22. The two clamping blocks 21 are respectively tightly connected to the two clamping ports 27 through two second bolts.

[0047] More specifically, when performing maintenance on the inside of the battery pack housing 1 after using it for a period of time, the bolts between the clamping blocks 21 and the clamping ports 27 can be loosened, so that the dust collection box 10 can be pulled out from the inside of the bottom box 9, and the sundries located inside the dust collection box 10 can be cleaned, which is convenient and easy to operate.

[0048] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium-ion battery pack with a heat dissipation function, comprising a battery pack housing (1) and a battery pack cover (2) mounted outside a plurality of lithium battery packs (6), characterized in that: The battery pack housing (1), the middle of the bottom surface and the middle of the bottom surface of the battery pack cover (2) are all fixedly connected with a temperature sensor (8); the inner wall of the battery pack housing (1) is fixedly connected with a raised frame (7); a plurality of the lithium battery packs (6) are located inside the raised frame (7); the side walls at both ends of the battery pack housing (1) are penetrated with heat dissipation ports (3); the inner walls at both ends of the battery pack housing (1) are connected with support components and heat dissipation mechanisms; the interiors of the two support components are connected with lifting mechanisms; the interiors of the two lifting mechanisms are connected with sealing components; the other end of the sealing component is connected to the heat dissipation mechanism; the lower end of the heat dissipation mechanism is connected with a dust collection component; the heat dissipation mechanism is matched and aligned with the heat dissipation port (3).

2. A lithium-ion battery pack with heat dissipation function according to claim 1, characterized in that: The support assembly comprises four support blocks (14), one end of each of the four support blocks (14) is fixedly connected to one side of the inner wall of the battery pack housing (1), and the lifting mechanism is connected to the four support blocks (14).

3. A lithium-ion battery pack with heat dissipation function according to claim 2, characterized in that: The lifting mechanism comprises a slide rod (13), a lead screw (15) and a lifting motor (16); the outer wall of the lifting motor (16) is fixedly connected to the side wall of one of the support blocks (14); the output shaft of the lifting motor (16) is fixedly connected to one end of the lead screw (15); the lead screw (15) and the slide rod (13) are arranged in parallel; the outer walls at both ends of the lead screw (15) are rotatably connected to the inner walls of the two support blocks (14); the outer walls at both ends of the slide rod (13) are fixedly connected to the inside of the other two support blocks (14); and the two ends of the sealing assembly are respectively connected to the lead screw (15) and the slide rod (13).

4. A lithium-ion battery pack with heat dissipation function according to claim 3, characterized in that: The heat dissipation mechanism comprises a support box (4), a cross bracket (17), a dustproof component and a blowing component; one side of the support box (4) is fixedly connected to one side of the inner wall of the battery pack housing (1); a through hole (20) is formed through the side wall of the support box (4); the through hole (20) is matched and aligned with the heat dissipation port (3); the four ends of the cross bracket (17) are fixedly connected to the inner wall of the through hole (20) at one end away from the heat dissipation port (3); the middle of the cross bracket (17) is connected to the blowing component; the dustproof component is connected to the support box (4), and the dustproof component is located between the cross bracket (17) and the heat dissipation port (3); the sealing component is located on both sides of the dustproof component; the bottom surface of the support box (4) is connected to the dust collecting component, and the sealing component and the dustproof component are matched and aligned with the dust collecting component.

5. A lithium-ion battery pack with heat dissipation function according to claim 4, characterized in that: The blowing assembly comprises a heat dissipation motor (18) and a fan blade (19); the outer wall of the heat dissipation motor (18) is fixedly connected to the side wall of the middle part of the cross bracket (17); the output shaft of the heat dissipation motor (18) is fixedly connected to the central axis of the fan blade (19); and the heat dissipation motor (18) and the fan blade (19) are both located between the cross bracket (17) and the dustproof assembly.

6. A lithium-ion battery pack with heat dissipation function according to claim 5, characterized in that: The dustproof component comprises a support frame (23), a dustproof net (29) and two plug-in blocks (30); a lifting opening (26) is formed through the upper surface of the support box (4) at one end close to the heat dissipation port (3); both sides of the upper end of the lifting opening (26) are provided with plug-in blocks (28); the inner wall of the support frame (23) is fixedly connected to the outer wall of the dustproof net (29); both sides of the upper end of the support frame (23) are fixedly connected to the two plug-in blocks (30); the two plug-in blocks (30) are respectively fastened to the two plug-in blocks (28) by two No. 1 bolts; the outer walls on both sides of the support frame (23) are respectively slidably connected to the inner walls on both sides of the lifting opening (26); the support frame (23), the dustproof net (29) and the two plug-in blocks (30) are located between the heat dissipation port (3) and the fan blade (19); and the sealing component is located on both sides of the support frame (23), the dustproof net (29) and the two plug-in blocks (30).

7. A lithium-ion battery pack with heat dissipation function according to claim 6, characterized in that: The sealing assembly comprises a lifting plate (11) and two sealing plates (5), the two ends of the lifting plate (11) are respectively sleeved on the outer walls of the screw rod (15) and the sliding rod (13), the inner wall of the lifting plate (11) is threadedly connected to the outer wall of the screw rod (15), the inner wall of the lifting plate (11) is slidably connected to the outer wall of the sliding rod (13), the bottom surface of the lifting plate (11) is fixedly connected to the upper ends of the two sealing plates (5), the side walls of the two sealing plates (5) are slidably connected to the inner wall of the lifting opening (26), the two sealing plates (5) are respectively located on both sides of the support frame (23), the dustproof net (29) and the two plug-in blocks (30), and the upper surface of the lifting plate (11) is penetrated by a replacement opening (12), and the replacement opening (12) is located directly above the support frame (23), the dustproof net (29) and the two plug-in blocks (30).

8. A lithium-ion battery pack with heat dissipation function according to claim 7, characterized in that: The lower ends of the two sealing plates (5) are fixedly connected with cleaning brushes (24), and the two cleaning brushes (24) are respectively slidably connected to the support frame (23) and the two sides of the dustproof net (29).

9. A lithium-ion battery pack with heat dissipation function according to claim 6, characterized in that: The dust collecting assembly comprises a bottom box (9), a dust collecting box (10) and a handle (22); the upper surface of the bottom box (9) is fixedly connected to the bottom surface of the support box (4); an ash dropping opening (25) is formed through the upper surface of the bottom box (9); a windshield (31) is rotatably provided on the inner wall of the ash dropping opening (25); the outer walls of the rotating shafts at both ends of the windshield (31) are sleeved with torsion springs (32); the two ends of the two torsion springs (32) are respectively fixedly connected to the outer wall of the windshield (31) and the inner wall of the ash dropping opening (25); the ash dropping opening (25) is matched and aligned with the lifting opening (26); the outer wall of the dust collecting box (10) is slidably connected to the inner wall of the bottom box (9); and one end of the dust collecting box (10) located outside the bottom box (9) is fixedly connected to the handle (22).

10. A lithium-ion battery pack with heat dissipation function according to claim 9, characterized in that: Blocks (21) are fixedly connected to both sides of the dust collecting box (10) at one end close to the handle (22), and bayonet holes (27) are provided on both sides of the bottom box (9) at one end close to the handle (22), and the two blocks (21) are respectively fixedly connected to the two bayonet holes (27) by two No. 2 bolts.

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