Power control assembly of lithium ion battery pack

Abstract

The invention belongs to the field of battery management control modules, and particularly relates to a power control assembly of a lithium ion battery pack. Air outlets are also formed in the left side and the right side of the top end of the device outer main body, and a heat dissipation mechanism is arranged in the device outer main body; the heat dissipation mechanism comprises a motor, the motor is arranged in the middle of the top end in the device outer body, and the top end of the motor is fixedly connected with the top end in the device outer body. Through the design of the heat dissipation mechanism, the function of accelerating heat dissipation is achieved, and the problems that an existing device is not provided with an assembly capable of being used for rapid cooling, existing equipment is cooled only through heat dissipation holes, when cooling is conducted only through the heat dissipation holes, the heat dissipation effect is slow, the internal temperature of the device is extremely high, and the cooling efficiency is poor are solved. And internal parts are damaged, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of battery management control modules, specifically the power control components of lithium-ion battery packs. Background Art

[0002] The battery management control module generally refers to the battery management system, abbreviated as BMS. The main function of BMS is to intelligently manage and maintain battery cells to prevent overcharging and over-discharging of the battery, extend the service life of the battery, and monitor the battery status.

[0003] For the existing power control components of lithium-ion battery packs, specifically refer to a battery pack intelligent management control module with the application number: CN202322987839.6, including heat dissipation holes, which are arranged below the front of the control module body to timely discharge the heat inside the device. There is a storage mechanism, and the storage mechanism is slidably connected to the inside of the control module body. When the battery needs to be replaced and repaired, the second motor controls the first gear to rotate, driving the second gear to rotate accordingly. Therefore, the threaded rod drives the slider to move horizontally, so that the storage plate and the battery above can be separated from the inside of the control module body, facilitating the staff to take out the battery for maintenance. It plays the role of being able to take out the battery pack for detection without using special tools, saving time and effort, and completing the detection process in the shortest time, bringing convenience to the normal operation of the battery pack control system.

[0004] The above-mentioned device does not have a component for rapid cooling. The existing devices only use heat dissipation holes for cooling. When only using heat dissipation holes for cooling and heat dissipation, the heat dissipation effect is slow, and it is extremely easy to cause the internal temperature of the device to be too high, damaging the internal parts. Therefore, a power control component for lithium-ion battery packs is proposed to solve the above problems. Summary of the Invention

[0005] To make up for the deficiencies of the prior art, since the existing device does not have a component for rapid cooling, and the existing devices only use heat dissipation holes for cooling. When only using heat dissipation holes for cooling and heat dissipation, the heat dissipation effect is slow, and it is extremely easy to cause the internal temperature of the device to be too high, damaging the internal parts. The present invention proposes a power control component for lithium-ion battery packs.

[0006] The technical solution adopted by the present invention to solve its technical problems is: The power control component of the lithium-ion battery pack described in the present invention includes an outer main body of the device; for the outer main body of the device, air outlets are also opened on the left and right sides at the top of the outer main body of the device, and a heat dissipation mechanism is arranged inside the outer main body of the device.

[0007] The heat dissipation mechanism includes a motor, which is arranged at the middle position of the top inside the outer main body of the device, and the top of the motor is fixedly connected to the top inside the outer main body of the device. The bottom of the motor is fixedly connected to the top of the first gear. The fourth gears are also arranged on the left and right sides of the first gear, and one end of the first gear is meshed with the fourth gear. The other end of the fourth gear is fixedly connected to one end of the first rotating rod.

[0008] Preferably, a first sleeve block is sleeved on the outer side of the first rotating rod, and the first rotating rod is rotationally connected to the first sleeve block. The top of the first sleeve block is fixedly connected to the top inside the outer main body of the device. The first limiting blocks are also arranged at the positions near the left and right sides of the first sleeve block on the outer side of the first rotating rod, and the outer side of the first rotating rod is fixedly connected to the inner wall of the first limiting block.

[0009] Preferably, the other end of the first rotating rod is fixedly connected to one end of the second gear. The second gear is meshed with the third gear. The top of the third gear is fixedly connected to the bottom of the second rotating rod. The top of the second rotating rod is fixedly connected to the bottom of the fan blade. A first heat dissipation and dust-proof plate is placed at the position near the air outlet at the top of the outer main body of the device.

[0010] Preferably, a second sleeve block is sleeved on the outer side of the second rotating rod, and the second rotating rod is rotationally connected to the second sleeve block. The second limiting blocks are also arranged at the upper and lower ends near the second sleeve block on the outer side of the second rotating rod, and the second rotating rod is fixedly connected to the inner wall of the second limiting block.

[0011] Preferably, a disassembly and cleaning mechanism is designed inside and outside the outer main body of the device. The disassembly and cleaning mechanism includes a first fixing block. The first fixing blocks are also arranged on the left and right sides of the top of the first heat dissipation and dust-proof plate, and the top of the first heat dissipation and dust-proof plate is fixedly connected to the bottom of the first fixing block. One side of the first fixing block near the upper position is fixedly connected to one end of a fixing rod. A moving insertion block is sleeved on the outer side of the fixing rod, and the fixing rod is slidably connected to the moving insertion block. One end of the moving insertion block is inserted into the second fixing block, and the moving insertion block is slidably connected to the second fixing block. The bottom of the second fixing block is fixedly connected to the top of the outer main body of the device. A return spring is sleeved on the outer side of the fixing rod. The return spring is fixedly connected to one side of the first fixing block. The other end of the return spring is fixedly connected to the other end of the moving insertion block. The top of the moving insertion block is fixedly connected to the bottom of a pull rod.

[0012] Preferably, the bottom end of the first gear is fixedly connected to the top end of the first pulley. One end of a transmission belt is sleeved outside the first pulley, and the first pulley is in transmission connection with the transmission belt. The other end of the transmission belt is sleeved outside the second pulley, and the transmission belt is in transmission connection with the second pulley. The bottom end of the second pulley is fixedly connected to the top end of the fifth gear. A third sleeve block is sleeved outside the fifth gear near the upper position, and the fifth gear is rotationally connected to the third sleeve block. The front end of the third sleeve block is fixedly connected to the front end inside the outer main body of the device.

[0013] Preferably, the fifth gear is meshed with the sixth gear. The inner wall of the sixth gear is fixedly connected to the outside of the reciprocating lead screw. The left and right ends of the reciprocating lead screw are also sleeved with fourth sleeve blocks, and the reciprocating lead screw is rotationally connected to the fourth sleeve blocks. The front end of the fourth sleeve block is fixedly connected to the front end inside the outer main body of the device.

[0014] Preferably, third limit blocks are also arranged on the left and right sides of the reciprocating lead screw near the middle position, and the outside of the reciprocating lead screw is fixedly connected to the inner walls of the third limit blocks.

[0015] Preferably, moving brushes are sleeved on the left and right ends of the outside of the reciprocating lead screw, and the reciprocating lead screw is in threaded connection with the moving brushes. Second heat dissipation and dust-proof plates are also arranged on the left and right sides inside the front end of the outer main body of the device, and the inner wall of the outer main body of the device is fixedly connected to the outside of the second heat dissipation and dust-proof plates. The front end of the moving brush near the lower position is in contact with the rear end of the second heat dissipation and dust-proof plate.

[0016] Preferably, the moving brush is sleeved on the outside of the guide rod, and the moving brush is slidably connected to the guide rod. The left and right ends of the guide rod are respectively fixedly connected to the left and right ends inside the outer main body of the device.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. Through the structural design of the heat dissipation mechanism, the present invention realizes the function of accelerating heat dissipation, solves the problem that the existing device does not have components for rapid cooling, and the existing equipment only cools through heat dissipation holes. When cooling only through heat dissipation holes, the heat dissipation effect is slow, and it is extremely easy to cause the temperature inside the device to be too high, damaging the internal parts, and improves the heat dissipation effect;

[0019] 2. Through the structural design of the disassembly and cleaning mechanism, the present invention realizes the function of facilitating the cleaning of the heat dissipation and dust-proof plate, solves the problem that the existing device does not have components for dust removal at the position of the heat dissipation holes. Due to long-term use, the heat dissipation holes are extremely easy to be blocked by dust and sundries. If not cleaned in time, it is extremely easy to cause the temperature inside the device to be too high and unable to dissipate heat effectively. However, when cleaning the existing device, the difficulty is great and it is not easy to operate, and improves the convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0022] Figure 2 is a schematic diagram of the first partial sectional structure of the present invention;

[0023] Figure 3 is a schematic diagram of the second partial sectional structure of the present invention;

[0024] Figure 4 is of the present invention Figure 1 schematic enlarged structure diagram at A in;

[0025] Figure 5 is of the present invention Figure 2 schematic enlarged structure diagram at B in.

[0026] Figure 6 is of the present invention Figure 2 schematic enlarged structure diagram at C in.

[0027] Figure 7 is of the present invention Figure 2 schematic enlarged structure diagram at D in.

[0028] Figure 8 is of the present invention Figure 2 schematic enlarged structure diagram at E in.

[0029] Figure 9 is of the present invention Figure 3 schematic enlarged structure diagram at F in.

[0030] Figure 10 is of the present invention Figure 3 schematic enlarged structure diagram at G in.

[0031] In the figure: 1. Outer main body of the device; 10. Motor; 11. First gear; 12. First rotating rod; 13. First sleeve block; 14. First limiting block; 15. Second gear; 16. Third gear; 17. Second rotating rod; 18. Fan blade; 19. Second sleeve block; 20. Second limiting block; 21. Air outlet; 22. First heat dissipation and dust-proof plate; 23. First fixing block; 24. Fixing rod; 25. Movable insertion block; 26. Second fixing block; 27. Pull rod; 28. Return spring; 29. Fourth gear; 30. First pulley; 31. Transmission belt; 32. Second pulley; 33. Third sleeve block; 34. Fifth gear; 35. Reciprocating lead screw; 36. Sixth gear; 37. Fourth sleeve block; 38. Third limiting block; 39. Movable brush; 40. Guide rod; 41. Second heat dissipation and dust-proof plate. Detailed implementation mode

[0032] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1 - 10 As shown, the power control component of the lithium-ion battery pack includes an outer main body 1 of the device; for the outer main body 1 of the device, air outlets 21 are also provided on the left and right sides at the top of the outer main body 1 of the device, and a heat dissipation mechanism is arranged inside the outer main body 1 of the device;

[0034] The heat dissipation mechanism includes a motor 10. The motor 10 is arranged at the middle position at the top inside the outer main body 1 of the device, and the top of the motor 10 is welded to the top inside the outer main body 1 of the device. The bottom of the motor 10 is welded to the top of the first gear 11. Fourth gears 29 are also arranged on the left and right sides of the first gear 11, and one end of the first gear 11 is meshed and connected with one end of the fourth gear 29. The other end of the fourth gear 29 is welded to one end of the first rotating rod 12;

[0035] During operation, the motor 10 at the bottom inside the outer main body 1 of the device drives the first gear 11 to rotate. When the first gear 11 rotates, it drives the fourth gears 29 on both sides to rotate simultaneously. When the fourth gear 29 rotates, it drives the first rotating rod 12 to rotate simultaneously.

[0036] Further, a first sleeve block 13 is sleeved outside the first rotating rod 12, and the first rotating rod 12 is rotatably connected to the first sleeve block 13. The inner wall of the first sleeve block 13 is circularly designed. The top end of the first sleeve block 13 is welded to the inner top end of the outer main body 1 of the device. First limiting blocks 14 are also arranged at positions on the left and right sides of the first rotating rod 12 close to the first sleeve block 13, and the outer side of the first rotating rod 12 is welded to the inner wall of the first limiting block 14;

[0037] During operation, the outer side of the first rotating rod 12 rotates along the inside of the first sleeve block 13, and the first limiting block 14 on the outer side of the first rotating rod 12 can prevent the position of the first rotating rod 12 from shifting.

[0038] Further, the other end of the first rotating rod 12 is welded to one end of the second gear 15. The second gear 15 is meshed with the third gear 16. The top end of the third gear 16 is welded to the bottom end of the second rotating rod 17. The top end of the second rotating rod 17 is welded to the bottom end of the fan blade 18. The second rotating rod 17 is circular rod-shaped. A first heat dissipation and dust-proof plate 22 is placed at the top end of the outer main body 1 of the device close to the air outlet 21;

[0039] During operation, the first rotating rod 12 rotates to drive the second gear 15 to rotate, and the second gear 15 drives the third gear 16 and the second rotating rod 17 to rotate simultaneously. The second rotating rod 17 drives the fan blade 18 to rotate along the inside of the air outlet 21, so as to discharge the hot air inside the outer main body 1 of the device through the second limiting block 20 and the air outlet 21.

[0040] Further, a second sleeve block 19 is sleeved outside the second rotating rod 17, and the second rotating rod 17 is rotatably connected to the second sleeve block 19. The inner wall of the second sleeve block 19 is circularly designed. Second limiting blocks 20 are also arranged at the upper and lower ends of the second rotating rod 17 close to the second sleeve block 19, and the second rotating rod 17 is welded to the inner wall of the second limiting block 20;

[0041] During operation, when the second rotating rod 17 rotates, it will rotate along the inside of the second sleeve block 19, and the second limiting block 20 can play a role in limiting the second rotating rod 17.

[0042] Furthermore, a disassembly and cleaning mechanism is designed inside and outside the outer body 1 of the device. The disassembly and cleaning mechanism includes a first fixing block 23. On the left and right sides of the top end of the first heat dissipation and dust-proof plate 22, there are also provided first fixing blocks 23, and the top end of the first heat dissipation and dust-proof plate 22 is welded to the bottom end of the first fixing block 23. One side of the first fixing block 23 near the upper position is welded to one end of a fixing rod 24. A moving insertion block 25 is sleeved outside the fixing rod 24, and the fixing rod 24 is slidably connected to the moving insertion block 25. One end of the moving insertion block 25 is inserted into the second fixing block 26, and the moving insertion block 25 is slidably connected to the second fixing block 26. The inner walls of the moving insertion block 25 and the second fixing block 26 are both square-shaped. The bottom end of the second fixing block 26 is fixedly connected to the top end of the outer body 1 of the device. A return spring 28 is sleeved outside the fixing rod 24. The return spring 28 is welded to one side of the first fixing block 23, and the other end of the return spring 28 is welded to the other end of the moving insertion block 25. The top end of the moving insertion block 25 is fixedly connected to the bottom end of a pull rod 27;

[0043] During operation, press the pull rods 27 on the left and right sides of the top end of the first heat dissipation and dust-proof plate 22 inward simultaneously, driving the moving insertion block 25 to move along the outside of the fixing rod 24 towards the first fixing block 23 until the moving insertion block 25 completely disengages from the inside of the second fixing block 26, then the first heat dissipation and dust-proof plate 22 can be taken out for later cleaning. And when the moving insertion block 25 moves towards the first fixing block 23, it will squeeze the return spring 28 to contract.

[0044] Furthermore, the bottom end of the first gear 11 is welded to the top end of the first pulley 30. One end of a transmission belt 31 is sleeved outside the first pulley 30, and the first pulley 30 is in transmission connection with the transmission belt 31. The other end of the transmission belt 31 is sleeved outside the second pulley 32, and the transmission belt 31 is in transmission connection with the second pulley 32. The inner wall of the third sleeve block 33 is circular. The bottom end of the second pulley 32 is welded to the top end of the fifth gear 34. The fifth gear 34 is sleeved outside the third sleeve block 33 near the upper position, and the fifth gear 34 is rotatably connected to the third sleeve block 33. The front end of the third sleeve block 33 is welded to the front end inside the outer body 1 of the device;

[0045] During operation, the first gear 11 rotates, simultaneously driving the first pulley 30 and the transmission belt 31 to rotate, and the other end of the transmission belt 31 drives the second pulley 32 to rotate. When the second pulley 32 rotates, it drives the fifth gear 34 to rotate simultaneously.

[0046] Further, the fifth gear 34 is meshed and connected with the sixth gear 36. The inner wall of the sixth gear 36 is welded to the outer side of the reciprocating lead screw 35. The outer sides of the left and right ends of the reciprocating lead screw 35 are also sleeved with fourth sliding blocks 37, and the reciprocating lead screw 35 is rotationally connected with the fourth sliding blocks 37. The inner wall of the fourth sliding block 37 is circularly designed, and the front end of the fourth sliding block 37 is welded to the inner front end of the outer main body 1 of the device;

[0047] During operation, the fifth gear 34 drives the sixth gear 36 to rotate. When the sixth gear 36 rotates, it drives the reciprocating lead screw 35 to rotate simultaneously, and the left and right ends of the reciprocating lead screw 35 rotate along the inside of the fourth sliding block 37.

[0048] Further, third limit blocks 38 are also arranged on the left and right sides of the outer side of the reciprocating lead screw 35 near the middle position, and the outer side of the reciprocating lead screw 35 is welded to the inner wall of the third limit blocks 38. The third limit blocks 38 are circularly designed;

[0049] During operation, the third limit blocks 38 can play a role in limiting the moving brush 39.

[0050] Further, moving brushes 39 are also sleeved on the outer sides of the left and right ends of the reciprocating lead screw 35, and the reciprocating lead screw 35 is threadedly connected with the moving brushes 39. Second heat dissipation and dust-proof plates 41 are also arranged on the left and right sides of the inner front end of the outer main body 1 of the device, and the inner wall of the outer main body 1 is welded to the outer side of the second heat dissipation and dust-proof plates 41. The front end of the moving brush 39 near the lower position is attached to the rear end of the second heat dissipation and dust-proof plate 41. The second heat dissipation and dust-proof plates 41 are square-shaped;

[0051] During operation, the rotation of the reciprocating lead screw 35 drives the moving brushes 39 on the left and right sides to reciprocate along the outer side of the reciprocating lead screw 35, and the moving brushes 39 scrape and clean the second heat dissipation and dust-proof plates 41 during the movement.

[0052] Further, the moving brushes 39 are sleeved on the outer sides of guide rods 40, and the moving brushes 39 are slidably connected with the guide rods 40. The left and right ends of the guide rods 40 are respectively welded to the left and right ends of the inside of the outer main body 1 of the device. The guide rods 40 are circular rod-shaped;

[0053] During operation, the moving brushes 39 move, and the moving brushes 39 move along the outer sides of the guide rods 40.

[0054] Working principle: Start the motor 10 at the bottom inside the outer main body 1 of the starting device, which drives the first gear 11 to rotate. When the first gear 11 rotates, it drives the fourth gears 29 on both sides to rotate simultaneously. When the fourth gears 29 rotate, they drive the first rotating rods 12 to rotate simultaneously. The outer side of the first rotating rod 12 rotates along the inside of the first sleeve block 13, and the first limiting block 14 on the outer side of the first rotating rod 12 can prevent the position of the first rotating rod 12 from shifting. At the same time, when the first rotating rod 12 rotates, it drives the second gear 15 to rotate, and the second gear 15 drives the third gear 16 and the second rotating rod 17 to rotate simultaneously. The second rotating rod 17 drives the fan blade 18 to rotate along the inside of the air outlet 21, thereby discharging the hot air inside the outer main body 1 of the device through the second limiting block 20 and the air outlet 21. When the second rotating rod 17 rotates, it will rotate along the inside of the second sleeve block 19, and the second limiting block 20 can play a limiting role for the second rotating rod 17. At the same time, when the first gear 11 rotates, it drives the first pulley 30 and the transmission belt 31 to rotate simultaneously. The other end of the transmission belt 31 drives the second pulley 32 to rotate. When the second pulley 32 rotates, it drives the fifth gear 34 to rotate simultaneously. The outer side above the fifth gear 34 rotates along the inside of the third sleeve block 33. At the same time, the fifth gear 34 drives the sixth gear 36 to rotate. When the sixth gear 36 rotates, it drives the reciprocating lead screw 35 to rotate simultaneously. The left and right ends of the reciprocating lead screw 35 rotate along the inside of the fourth sleeve block 37. The thread directions on both sides of the reciprocating lead screw 35 are opposite, so that the rotation of the reciprocating lead screw 35 drives the moving brushes 39 on the left and right sides to reciprocate along the outer side of the reciprocating lead screw 35. The third limiting block 38 can play a limiting role for the moving brushes 39. At the same time, the moving brushes 39 move along the outer side of the guide rod 40, and the moving brushes 39 scrape and clean the second heat dissipation and dust-proof plate 41 during the movement. Then, press the pull rods 27 on the left and right sides at the top of the first heat dissipation and dust-proof plate 22 inward simultaneously, driving the moving insertion block 25 to move along the outer side of the fixed rod 24 towards the position of the first fixed block 23 until the moving insertion block 25 completely disengages from the inside of the second fixed block 26, then the first heat dissipation and dust-proof plate 22 can be taken out for later cleaning. When the moving insertion block 25 moves towards the position of the first fixed block 23, it will squeeze the return spring 28 to contract.

[0055] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A power control assembly for a lithium-ion battery pack, comprising an outer body (1) of the device; characterized in that: The device outer body (1), the left and right sides of the top of the device outer body (1) are also provided with air outlets (21), and the device outer body (1) is provided with a heat dissipation mechanism inside; The heat dissipation mechanism comprises a motor (10), a first set block (13), a first limit block (14), a second gear (15), a third gear (16), a second rotating rod (17), a fan blade (18), and a second set block (19); the motor (10) is arranged at the middle position of the top end inside the outer body (1) of the device, and the top end of the motor (10) is fixedly connected to the top end inside the outer body (1) of the device; the bottom end of the motor (10) is fixedly connected to the top end of the first gear (11); the left and right sides of the first gear (11) are respectively meshed and connected with two groups of fourth gears (29); the other end of the fourth gear (29) is fixedly connected to one end of the first rotating rod (12).

2. The power control assembly of the lithium-ion battery pack according to claim 1, characterized in that: The outer side of the first rotating rod (12) is rotatably connected to the first sleeve block (13), the top of the first sleeve block (13) is fixedly connected to the top of the inner side of the outer body (1) of the device, the outer side of the first rotating rod (12) near the left and right sides of the first sleeve block (13) corresponds to the first limit block (14), and the outer side of the first rotating rod (12) is fixedly connected to the inner wall of the first limit block (14).

3. The power control assembly of the lithium-ion battery pack according to claim 2, characterized in that: The other end of the first rotating rod (12) is fixedly connected to one end of the second gear (15), the second gear (15) is meshingly connected to the third gear (16), the top end of the third gear (16) is fixedly connected to the bottom end of the second rotating rod (17), the top end of the second rotating rod (17) is fixedly connected to the bottom end of the fan blade (18), and a first heat dissipation dustproof plate (22) is placed at the top of the outer body (1) of the device near the air outlet (21).

4. The power control assembly of the lithium-ion battery pack according to claim 3, characterized in that: The outer side of the second rotating rod (17) is sleeved on the second sleeve block (19), and the second rotating rod (17) is rotatably connected to the second sleeve block (19). Second limit blocks (20) are also arranged on the outer side of the second rotating rod (17) near the upper and lower ends of the second sleeve block (19), and the second rotating rod (17) is fixedly connected to the inner wall of the second limit block (20).

5. The power control assembly of the lithium-ion battery pack according to claim 4, characterized in that: The outer body (1) of the device is provided with a dismantling and cleaning mechanism inside and outside, and the dismantling and cleaning mechanism comprises a first fixed block (23), a first pulley (30), a transmission belt (31), a second pulley (32), a third set block (33), a fifth gear (34), a reciprocating screw rod (35), a sixth gear (36), a fourth set block (37), a third limit block (38), a movable brush (39), a guide rod (40) and a dustproof plate (41). The first fixed block (23) is also provided on the left and right sides of the top of the first heat dissipation and dustproof plate (22), and the top of the first heat dissipation and dustproof plate (22) is fixedly connected to the bottom of the first fixed block (23), and one side of the first fixed block (23) near the upper position is connected to the fixed block (23). One end of the fixed rod (24) is fixedly connected, a movable plug-in block (25) is sleeved on the outer side of the fixed rod (24), and the fixed rod (24) and the movable plug-in block (25) are slidably connected, one end of the movable plug-in block (25) is inserted into the second fixed block (26), and the movable plug-in block (25) and the second fixed block (26) are slidably connected, the bottom end of the second fixed block (26) is fixedly connected to the top of the outer body (1) of the device, a return spring (28) is sleeved on the outer side of the fixed rod (24), the return spring (28) is fixedly connected to one side of the first fixed block (23), the other end of the return spring (28) is fixedly connected to the other end of the movable plug-in block (25), and the top of the movable plug-in block (25) is fixedly connected to the bottom end of the pull rod (27).

6. The power control assembly of the lithium-ion battery pack according to claim 5, characterized in that: The top end of the first pulley (30) is fixedly connected to the bottom end of the first gear (11); a transmission belt (31) is sleeved on the outer side of the first pulley (30), and the first pulley (30) is transmission-connected with the transmission belt (31); the other end of the transmission belt (31) is sleeved on the outer side of the second pulley (32), and the transmission belt (31) is transmission-connected with the second pulley (32); the bottom end of the second pulley (32) is fixedly connected to the top end of the fifth gear (34); a third block (33) is sleeved on the outer side of the fifth gear (34) near the upper position, and the fifth gear (34) is rotationally connected with the third block (33); the front end of the third block (33) is fixedly connected to the front end of the inner side of the outer body (1) of the device.

7. The power control assembly of the lithium-ion battery pack according to claim 6, characterized in that: The fifth gear (34) is meshedly connected with the sixth gear (36), the inner wall of the sixth gear (36) is fixedly connected with the outer side of the reciprocating screw rod (35), the fourth set block (37) is also sleeved on the outer sides of the left and right ends of the reciprocating screw rod (35), and the reciprocating screw rod (35) is rotatably connected with the fourth set block (37), and the front end of the fourth set block (37) is fixedly connected with the front end of the inner side of the outer body (1) of the device.

8. The power control assembly of the lithium-ion battery pack according to claim 7, characterized in that: A third limiting block (38) is also provided on the left and right sides of the outer side of the reciprocating screw rod (35) near the middle position, and the outer side of the reciprocating screw rod (35) is fixedly connected to the inner wall of the third limiting block (38).

9. The power control assembly of the lithium-ion battery pack according to claim 8, characterized in that: The left and right ends of the outer side of the reciprocating screw (35) are also sleeved with movable brushes (39), and the reciprocating screw (35) is threadedly connected to the movable brush (39). The left and right sides of the front end of the outer body (1) of the device are also provided with a second heat dissipation dustproof plate (41), and the inner wall of the outer body (1) of the device is fixedly connected to the outer side of the second heat dissipation dustproof plate (41), and the front end of the movable brush (39) near the lower position is in contact with the rear end of the second heat dissipation dustproof plate (41).

10. The power control assembly of the lithium-ion battery pack according to claim 9, characterized in that: The movable brush (39) is sleeved on the outside of the guide rod (40), and the movable brush (39) is slidably connected to the guide rod (40), and the left and right ends of the guide rod (40) are respectively fixedly connected to the left and right ends inside the outer body (1) of the device.

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