A high-performance lithium-ion battery pack for electric vehicles

Abstract

The present invention discloses a high-performance lithium-ion battery pack for electric vehicles, which relates to the field of lithium-ion battery packs. The battery pack includes a battery box group and a battery body. The battery body is arranged inside the battery box group. The bottom of the battery box group is fixedly inserted with heat dissipation fins for providing heat transfer inside it. In the middle of the inner cavity of the battery box group, there is an installation bin, and an air intake duct is fixed in the installation bin. The top surface of the battery box group is provided with a sealing cover plate. The present invention overcomes the deficiencies of the prior art, skillfully combines active heat dissipation and natural air cooling, and at the same time uses a scraping rack to alternately clean the dust on the surface of the heat dissipation fins to continuously optimize the heat transfer effect, and there is no need to provide an additional power source for control, which has high social use value and application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium-ion battery packs, and particularly to a high-performance lithium-ion battery pack for electric vehicles. Background Art

[0002] An electric vehicle is a means of transportation powered by electricity, including electric bicycles, electric motorcycles, and electric vehicles. Its main components are batteries, motors, and controllers. Among the types of batteries it uses, lithium-ion batteries have relatively excellent performance. Compared with ordinary batteries, they can store more electricity and their charging speed is also relatively fast.

[0003] When a lithium-ion battery is in use, its heat dissipation is relatively important, which can directly affect the performance and lifespan of the battery. And in the case of poor heat dissipation, certain safety hazards are likely to occur. During the actual use process, since the battery requires a safe environment, a protective box is installed outside it to protect the battery.

[0004] However, the addition of the box will also affect heat dissipation. The addition of heat sinks outside the box can improve the heat dissipation efficiency of the box. However, after long-term use, dust and debris are likely to adhere to the surface of the heat sinks, reducing the heat transfer efficiency of the heat sinks. Summary of the Invention

[0005] In order to achieve stable heat dissipation during the use of the battery pack and simultaneously ensure the stability of the battery inside the protective box to prevent the occurrence of safety hazards, the present invention adopts the following technical solutions:

[0006] A high-performance lithium-ion battery pack for electric vehicles, including a battery box group and a battery body. The battery body is arranged inside the battery box group. The bottom of the battery box group is fixedly inserted with heat dissipation fins for providing heat transfer inside it. There is an installation chamber in the middle of the inner cavity of the battery box group, and an air intake duct is fixed in the installation chamber. The top surface of the battery box group is provided with a cover plate. The side surface of the battery box group is provided with a wind collection sleeve communicated with the air intake duct. The other side surface of the battery box group is provided with an air outlet guard plate. A balance groove is opened at the bottom of the battery box group;

[0007] At the inner end of the air intake duct, there is a fan blade on one side of the air outlet guard plate. A driving bevel gear is arranged at the axial center position of the fan blade. A transmission device is arranged at one side of the fan blade at the end of the battery box group.

[0008] Preferably, the transmission device includes a main shaft, a driven bevel gear, and a driving spur gear. The main shaft is rotatably connected to the end of the battery box group. The driven bevel gear is fixedly installed at the end of the main shaft. The driven bevel gear is meshed and matched with the driving bevel gear. The driving spur gear is fixedly installed in the middle of the main shaft.

[0009] Preferably, the transmission device further includes an adjusting mechanism installed at the end of the battery box group. The adjusting mechanism includes a swing frame rotatably connected to the end of the battery box group. A transmission gear meshing and matching with the driving spur gear is rotatably provided on the swing frame, and a driving gear meshing and matching with the transmission gear is rotatably provided on the swing frame.

[0010] Preferably, a tower gear group meshing and matching with the driving gear is provided at the end of the air intake duct, and a reciprocating lead screw is provided at the inner end of the installation bin.

[0011] Preferably, a synchronous gear meshing and matching with the tower gear group is provided at the end of the reciprocating lead screw. A cross-moving frame is threadedly sleeved on the reciprocating lead screw. A scraping frame acting on the outer surface of the heat dissipation fins is fixedly installed on the cross-moving frame, and the scraping frame is slidably sleeved with the balance groove.

[0012] Preferably, a reversing push rod is fixedly installed at the end of the cross-moving frame. An ear block in contact and matching with the reversing push rod is rotatably provided on the swing frame, and a stop block for providing position limitation for the ear block is further provided on the swing frame.

[0013] Preferably, a plug board is fixedly installed on the inner side surface of the swing frame. A slot for inserting the plug board is opened on the side surface of the end of the battery box group, and a magnetic block magnetically matching with the plug board is fixedly installed in the slot.

[0014] Preferably, a battery rack for clamping the battery body is provided in the battery box group, and a placement hole for inserting the battery body is opened on the battery rack.

[0015] Preferably, an embedded groove is opened on the inner side of the battery rack. A clamping mechanism for locking the position of the battery body is provided in the embedded groove. Adjusting grooves are opened on both side surfaces of the battery rack, and guiding grooves corresponding to the position of the embedded groove are opened in the adjusting grooves.

[0016] Preferably, guiding holes are opened in the guiding grooves. An adjusting frame for driving the clamping mechanism to move in the embedded groove is slidably sleeved in the adjusting grooves. Assembly plates for closing the adjusting grooves are provided on both side surfaces of the battery rack.

[0017] Preferably, the clamping mechanism includes a gear column rotatably installed in the embedded groove. Clamping plates meshing and matching with the gear column are slidably sleeved at the top and bottom of the embedded groove. Connecting rods slidably sleeved with the guiding holes are provided on both side surfaces of the clamping plates, and the ends of the connecting rods are fixedly connected to the inner side surface of the adjusting frame.

[0018] Preferably, balance bars are provided on both the inner top surface and the inner bottom surface of the embedded groove. Sleeve grooves slidably matching with the balance bars are opened on the outer surface of the clamping plate.

[0019] Preferably, a spring chamber is provided at the end of the adjusting frame, and a locking mechanism is rotatably sleeved at the end of the adjusting frame.

[0020] Preferably, the locking mechanism includes an adjusting screw rod rotatably sleeved at the end of the adjusting frame. A spline wrench cap is provided at the end of the adjusting screw rod. A locking frame for locking its rotation is movably sleeved on the spline wrench cap. Plug rods are provided at both ends of the locking frame and are movably sleeved in the spring chambers. A return spring connected to the end of the plug rod is fixedly connected in the spring chambers.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. By collecting natural wind during the running of the electric vehicle and using the air collecting sleeve to collect the flowing air into the air collecting pipe, the effective utilization of natural air cooling is realized. At the same time, the air drives the fan blades to rotate, and then drives a series of transmission devices, enabling the heat dissipation fins to better perform heat transfer. This combined method of active heat dissipation and natural air cooling can quickly and effectively reduce the temperature inside the battery box group, avoiding the performance degradation or shortened lifespan of the battery due to overheating.

[0023] 2. Through the arrangement of the scraping frame on the transverse moving frame, the surface of the heat dissipation fins can be cleaned. During long-term use, dust and other sundries are likely to accumulate on the surface of the heat dissipation fins, which will affect the heat dissipation efficiency of the heat dissipation fins. The cleaning effect of the scraping frame can ensure the cleanliness of the surface of the heat dissipation fins, and the two transverse moving frames move alternately, which can continuously optimize the contact effect between the heat dissipation fins and the flowing air, enhance heat transfer, and ensure that the battery pack can maintain a good heat dissipation state under various working conditions.

[0024] 3. Through the commutation mechanism of the swing frame, it is ensured that the reciprocating lead screw can drive the transverse moving frames to move alternately continuously. Through the cooperation of the insertion plate, the insertion slot and the magnetic block, and the interaction between the retaining ear, the retaining block and the commutation push rod, a stable commutation operation is achieved, enabling the heat dissipation system to operate stably for a long time and improving the reliability of the heat dissipation of the entire battery pack.

[0025] 4. Through the arrangement of the battery rack, the battery body is inserted into the placement holes of the battery rack, and the battery rack and the battery box group are fixed by bolts, providing a basic fixing method for the battery and effectively preventing the battery from having a large displacement in the battery box group.

[0026] 5. Through the arrangement of the clamping mechanism and the locking mechanism, the adjusting screw rod and the spline wrench cap cooperate. When adjustment is needed, the rotation locking of the locking frame on the spline wrench cap can be conveniently released to adjust the position of the adjusting frame, and it can be quickly locked after the adjustment is completed. This design not only facilitates the adjustment of the fixed position of the battery during installation and maintenance, but also ensures the stability of the battery position during normal use.

[0027] In summary, the present invention overcomes the deficiencies of the prior art, skillfully combines active heat dissipation and natural air cooling, and at the same time uses a scraping rack to alternately clean the dust on the surface of the heat dissipation fins to continuously optimize the heat transfer effect, and does not require an additional power source for control, having high social use value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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 for use 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.

[0029] Figure 1 It is an exploded schematic view of the overall structure of the present invention;

[0030] Figure 2 It is a schematic view of the overall structure of the present invention;

[0031] Figure 3 It is a schematic view of the internal structure of the present invention;

[0032] Figure 4 It is a sectional schematic view of the overall structure of the present invention;

[0033] Figure 5 It is a schematic view of the structure of the heat dissipation fins in the present invention;

[0034] Figure 6 It is a schematic view of the structural position of the transverse moving rack in the present invention;

[0035] Figure 7 For this Figure 6 The enlarged partial structure diagram at A;

[0036] Figure 8 It is a partial schematic view of the end structure of the battery box group in the present invention;

[0037] Figure 9 For this Figure 8 The enlarged partial structure diagram at B;

[0038] Figure 10 It is a schematic view of the structural splicing of the battery rack and the battery body in the present invention;

[0039] Figure 11 It is an exploded schematic view of the structure of the battery rack in the present invention;

[0040] Figure 12 It is a sectional schematic view of the structure of the locking mechanism in the present invention;

[0041] Figure 13Schematic diagram of the internal structure of the battery rack in the present invention;

[0042] Figure 14 Schematic diagram of the outer structure of the battery rack in the present invention;

[0043] Figure 15 Schematic diagram of the structure of the clamping mechanism in the present invention.

[0044] In the figure: 100, battery box group; 1001, installation bin; 1002, sealing cover plate; 1003, air intake duct; 1004, air collecting sleeve; 1005, air outlet guard plate; 1006, balance groove; 1007, slot; 200, battery body; 1, heat dissipation fins; 2, fan blades; 21, driving bevel gear; 3, main shaft; 31, driven bevel gear; 32, driving spur gear; 4, adjusting mechanism; 401, swing frame; 402, transmission gear; 403, driving gear; 404, retaining ear; 405, retaining block; 406, insertion plate; 41, tower gear set; 42, reciprocating lead screw; 421, synchronizing gear; 43, transverse moving frame; 431, scraping frame; 432, reversing push rod; 5, magnetic block; 6, battery rack; 601, placement hole; 602, adjusting groove; 6021, guiding groove; 6022, guiding hole; 603, embedded groove; 6031, balance bar; 61, assembling plate; 7, adjusting frame; 71, spring bin; 8, clamping mechanism; 801, gear column; 802, clamping plate; 8021, sleeve groove; 803, connecting rod; 9, locking mechanism; 901, adjusting screw; 902, spline nut; 903, locking frame; 904, insertion rod; 905, return spring. Detailed implementation manners

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] Embodiment 1

[0047] Refer to Figures 1 - 15A high-performance lithium-ion battery pack for electric vehicles includes a battery box group 100 and a battery body 200. The battery body 200 is arranged inside the battery box group 100. A heat sink 1 for providing heat transfer inside the battery box group 100 is fixedly inserted at the bottom of the battery box group 100. The heat sink 1 penetrates the bottom surface of the battery box group 100 and extends to the inside of the battery box group 100, so that the heat sink 1 can transfer the heat emitted by the battery body 200 inside the battery box group 100, so that the heat can move from one end of the heat sink 1 inside the battery box group 100 to the other end outside the battery box group 100, so as to facilitate the heat dissipation treatment of the inside of the battery box group 100. An installation compartment 1001 is provided in the middle of the inner cavity of the battery box group 100. An air collecting duct 1003 is fixed in the installation compartment 1001, and a sealing cover plate 1002 is provided on the top surface of the battery box group 100. The sealing cover plate 1002 cooperates with the battery box group 100 to seal and protect the battery body 200 inside the battery box group 100. An air collecting sleeve 1004 connected to the air collecting duct 1003 is provided on the side of the battery box group 100. When the electric vehicle installed with the battery pack moves, the wind generated by the air collecting sleeve 1004 can enter therein, so that the air collecting sleeve 1004 can complete the collection of flowing air, so that the flowing air can enter the interior of the air collecting duct 1003. An air outlet guard plate 1005 is provided on the other side of the battery box group 100, and a balancing groove 1006 is provided at the bottom of the battery box group 100.

[0048] The inner end of the air collecting duct 1003 is provided with a fan blade 2 located on one side of the air outlet guard plate 1005, and the axial position of the fan blade 2 is provided with an active bevel gear 21. The end of the battery box group 100 is provided with a transmission device located on one side of the fan blade 2. When the electric vehicle drives the battery pack to move, the flowing air will enter the air collecting duct 1003 through the air collecting sleeve 1004, and then be discharged through the fan blade 2. When the air flows through the fan blade 2, it can drive the fan blade 2 to rotate, so that the fan blade 2 can synchronously drive the active bevel gear 21 to rotate.

[0049] Specifically, refer to Figure 6 and Figure 7 The transmission device includes a main shaft 3, a driven bevel gear 31 and a driving spur gear 32. The main shaft 3 is rotatably connected to the end of the battery box group 100. The driven bevel gear 31 is fixedly installed at the end of the main shaft 3. The driven bevel gear 31 is meshed and matched with the driving bevel gear 21. The driving spur gear 32 is fixedly installed in the middle of the main shaft 3. When the driving bevel gear 21 rotates, it can drive the driven bevel gear 31 to rotate. Through the transmission effect of the main shaft 3, the driving spur gear 32 can also rotate synchronously.

[0050] Specifically, refer to Figures 7 - 9, the transmission device further includes an adjustment mechanism 4 installed at the end of the battery box group 100. The adjustment mechanism 4 includes a swing frame 401 rotatably connected to the end of the battery box group 100. A transmission gear 402 meshing and matching with the driving spur gear 32 is rotatably provided on the swing frame 401. A driving gear 403 meshing and matching with the transmission gear 402 is rotatably provided on the swing frame 401. During the rotation of the driving spur gear 32, through the transmission of the transmission gear 402, the driving gears 403 at both ends of the swing frame 401 can rotate synchronously.

[0051] Specifically, referring to Figures 6 - 9 , a tower gear set 41 meshing and matching with the driving gear 403 is provided at the end of the air intake duct 1003. A reciprocating lead screw 42 is provided at the inner end of the installation bin 1001. The driving gear 403 is arranged to mesh and match with the tower gear set 41, so that the driving gear 403 drives the tower gear set 41 to rotate. The number of the tower gear set 41, the reciprocating lead screw 42, the transmission gear 402, and the driving gear 403 is two. The driving gears 403 at both ends of the swing frame 401 can separately mesh and match with the tower gear set 41 on the same side. When the tower gear set 41 on the left side of the end of the air intake duct 1003 meshes and matches with the driving gear 403 on the same side, the tower gear set 41 on the right side of the end of the air intake duct 1003 will not mesh and match with the driving gear 403 on the same side. Vice versa, the rotation of the two reciprocating lead screws 42 will alternate.

[0052] Specifically, referring to Figures 6 - 9 , a synchronizing gear 421 meshing and matching with the tower gear set 41 is provided at the end of the reciprocating lead screw 42. A crosswise moving frame 43 is threadedly sleeved on the reciprocating lead screw 42. A scraping frame 431 acting on the outer surface of the heat dissipation fins 1 is fixedly installed on the crosswise moving frame 43. The scraping frame 431 is slidably sleeved in the balance groove 1006. The rotation of the reciprocating lead screw 42 is realized through the meshing and matching between the synchronizing gear 421 and the tower gear set 41. When the synchronizing gear 421 and the tower gear set 41 are meshed through the rotation of the swing frame 401, the tower gear set 41 can rotate, otherwise it cannot rotate. When the crosswise moving frames 43 at both ends of the bottom of the battery box group 100 are driven to move by the reciprocating lead screw 42, they will also move alternately according to the rotation of the reciprocating lead screw 42. The two crosswise moving frames 43 will not move horizontally synchronously, so as to ensure the contact effect between the surfaces of multiple heat dissipation fins 1 and the flowing air, and avoid the influence of the synchronous movement of the two crosswise moving frames 43 on the heat transfer efficiency of the contact between the heat dissipation fins 1 and the flowing air.

[0053] Specifically, referring to Figures 6 - 9, a reversing push rod 432 is fixedly installed at the end of the transverse moving frame 43. A retaining ear 404 that is in contact and match with the reversing push rod 432 is rotatably provided on the swing frame 401. A stop block 405 for providing position limitation for the retaining ear 404 is also provided on the swing frame 401. Through the setting of the reversing push rod 432, when the transverse moving frame 43 on the left side of the heat dissipation fin 1 moves to near one end of the adjusting mechanism 4, the reversing push rod 432 will contact the retaining ear 404. As the transverse moving frame 43 continues to move, the reversing push rod 432 will push the retaining ear 404, causing the swing frame 401 to adjust its angle around the connection axis with the battery box group 100. When the reversing push rod 432 pushes the retaining ear 404, the stop block 405 can limit the relative position between the retaining ear 404 and the swing frame 401. A torsion spring is provided on the shaft connecting the retaining ear 404 and the swing frame 401, which is convenient for the reset operation of the retaining ear 404.

[0054] Specifically, referring to Figures 6 - 9 , a plug board 406 is fixedly installed on the inner side surface of the swing frame 401. A slot 1007 for inserting the plug board 406 is opened on the side surface of the end of the battery box group 100. A magnet block 5 that is magnetically attracted and matched with the plug board 406 is fixedly installed in the slot 1007. When the reversing push rod 432 pushes the retaining ear 404, the swing frame 401 will adjust its angle. As the reversing push rod 432 continuously pushes the retaining ear 404 to move, the contact area between the reversing push rod 432 and the retaining ear 404 is reduced until the reversing push rod 432 no longer contacts the retaining ear 404. At this time, the plug board 406 just inserts into the inside of the slot 1007, and the magnet block 5 magnetically attracts the plug board 406, making the plug board 406 stably inserted inside the slot 1007. The driving gear 403 on the same side will also be separated from the tower gear set 41 and no longer engage and match;

[0055] Moreover, at this time, the structure on the other side of the swing frame 401 will change its position. The plug board 406 at the other end of the swing frame 401 will withdraw from the inside of the slot 1007. As the swing frame 401 adjusts its angle, the driving gear 403 on the side where the plug board 406 withdraws can engage and match with the tower gear set 41, so that the reciprocating lead screw 42 drives the transverse moving frame 43 to perform transverse movement. When the transverse moving frame 43 on this side moves away from the swing frame 401, the reversing push rod 432 will drive the retaining ear 404 and the swing frame 401 to have a torsional displacement. The torsion spring inside the retaining ear 404 will take effect, so that when the reversing push rod 432 no longer contacts the retaining ear 404 after continuous movement, the retaining ear 404 can be reset, which is convenient for the next movement of the reversing push rod 432 to push the retaining ear 404, so as to enable the swing frame 401 to complete the reversing operation of the reciprocating lead screw 42.

[0056] Embodiment 2

[0057] Referring to Figures 1 - 15The difference between this embodiment and embodiment 1 is that a battery rack 6 for clamping the battery body 200 is provided in the battery box group 100, and a placement hole 601 for inserting the battery body 200 is opened on the battery rack 6. The battery body 200 can be inserted into the placement hole 601. The battery rack 6 and the battery box group 100 are directly fixed with bolts to ensure the stability of the battery body 200 inside the battery box group 100.

[0058] Specifically, refer to Figures 11 - 15 An embedded groove 603 is provided on the inner side of the battery rack 6, and a clamping mechanism 8 is provided in the embedded groove 603 to provide position locking for the battery body 200. Adjustment grooves 602 are provided on both sides of the battery rack 6, and a guide groove 6021 corresponding to the position of the embedded groove 603 is provided in the adjustment groove 602. The setting of the clamping mechanism 8 can cooperate with the placement hole 601 and the battery rack 6 to provide a locking effect for the battery body 200 in the placement hole 601, thereby preventing the battery body 200 from shaking inside the battery box assembly 100.

[0059] Specifically, refer to Figures 10 - 14 A guide hole 6022 is provided at the top of the inner side of the guide groove 6021, and an adjustment frame 7 is slidably sleeved in the adjustment groove 602 to drive the clamping mechanism 8 to move in the embedded groove 603. Both sides of the battery frame 6 are provided with an assembly plate 61 to provide a closure for the adjustment groove 602. The adjustment frame 7 can move horizontally in the left and right directions inside the adjustment groove 602 to drive the clamping mechanism 8 to adjust its position, so that the clamping mechanism 8 can lock the position of the battery body 200.

[0060] Specifically, refer to Figure 11 , Figure 13 and Figure 15 The clamping mechanism 8 includes a gear column 801 rotatably installed in the embedded groove 603, and the top and bottom of the embedded groove 603 are slidably sleeved with a clamping plate 802 meshing with the gear column 801. Both sides of the clamping plate 802 are provided with a connecting rod 803 slidably sleeved with the guide hole 6022. The end of the connecting rod 803 is fixedly connected to the inner side of the adjustment frame 7. No guide holes 6022 are set on both sides of the clamping plate 802 at the bottom of the embedded groove 603. When the adjustment frame 7 moves, it will drive the connecting rod 803 to move inside the guide hole 6022, so that the connecting rod 803 drives the clamping plate 802 to move, and then through the meshing synchronization action of the gear column 801, the clamping plate 802 inside the same embedded groove 603 can perform synchronous reverse movement.

[0061] Specifically, refer to Figure 13 and Figure 15, balance bars 6031 are provided on both the inner top surface and the inner bottom surface of the embedded groove 603. A sleeve groove 8021 that slidably matches the balance bars 6031 is formed on the outer surface of the clamping plate 802. The arrangement of the balance bars 6031 in cooperation with the sleeve groove 8021 provides a limiting and balancing effect for the movement of the clamping plate 802.

[0062] Specifically, referring to Figure 8 and Figure 12 , a spring chamber 71 is provided at the end of the adjusting frame 7. A locking mechanism 9 is rotatably sleeved at the end of the adjusting frame 7. The relative position between the adjusting frame 7 and the battery box group 100 can be adjusted through the locking mechanism 9, enabling the adjusting frame 7 to make a lateral adjustment inside the adjusting groove 602 to adjust the locking of the clamping mechanism 8 on the battery body 200.

[0063] Specifically, referring to Figure 8 and Figure 12 , the locking mechanism 9 includes an adjusting screw 901 rotatably sleeved at the end of the adjusting frame 7. A spline nut 902 is provided at the end of the adjusting screw 901. A locking frame 903 for locking its rotation is movably sleeved on the spline nut 902. Plug rods 904 that are movably sleeved with the spring chamber 71 are provided at both ends of the locking frame 903. A return spring 905 connected to the end of the plug rod 904 is fixedly connected inside the spring chamber 71. When the position of the adjusting frame 7 needs to be adjusted, the locking frame 903 is squeezed towards the direction close to the battery box group 100, so that the plug rod 904 can compress the return spring 905 inside the spring chamber 71, releasing the rotation locking of the locking frame 903 on the spline nut 902. Then, by rotating the spline nut 902, the relative position between the adjusting frame 7 and the battery box group 100 is adjusted. After the adjustment is completed, the locking frame 903 can be released, allowing the elastic deformation of the return spring 905 to recover, so that the locking frame 903 locks the rotation of the spline nut 902 again. A spline groove that matches the outer side of the spline nut 902 is provided inside the locking frame 903.

[0064] For other structures not described, refer to Embodiment 1.

[0065] Working principle: In the present invention, when the electric vehicle moves, the generated wind force is collected by the wind collecting sleeve 1004, and the air enters the air collecting pipe 1003. At the same time, during this process, the natural wind during the driving of the electric vehicle is utilized to make it contact the surface of the heat dissipation fins 1, so as to transfer and dissipate the heat inside the battery box group 100 through the heat dissipation fins 1;

[0066] When the flowing air passes through the fan blades 2 in the air collecting pipe 1003, it drives the fan blades 2 to rotate. The driving bevel gear 21 at the axis of the fan blades 2 rotates accordingly. The driving bevel gear 21 meshes with the driven bevel gear 31, transmitting the power to the main shaft 3, and enabling the driving spur gear 32 on the main shaft 3 to rotate synchronously;

[0067] The rotation of the active spur gear 32 drives the driving gear 403 on the swing frame 401 to rotate synchronously through meshing with the transmission gear 402. The driving gear 403 meshes with the tower gear set 41 at the end of the air receiving duct 1003 to drive the tower gear set 41 to rotate. The tower gear set 41 is connected to the reciprocating screw rod 42 through the synchronous gear 421 to rotate the reciprocating screw rod 42.

[0068] The transverse frame 43 threadedly mounted on the reciprocating screw 42 moves transversely when the screw rotates, and the scraper 431 on the transverse frame 43 acts on the outer surface of the heat sink fin 1. During the transverse movement of the scraper 431, firstly, dust and other debris that may have accumulated on the surface of the heat sink fin 1 are cleaned to ensure the heat dissipation efficiency of the heat sink fin 1; secondly, the heat sink fin 1 is better in contact with the flowing air through transverse movement to enhance the heat transfer effect. Moreover, the two transverse frames 43 move alternately to avoid the influence of synchronous movement on the heat transfer efficiency of the heat sink fin 1 in contact with the flowing air;

[0069] When the reversing push rod 432 at the end of the transverse frame 43 on one side contacts and pushes the stop ear 404 on the swing frame 401, the swing frame 401 adjusts its angle around the axis of connection with the battery box group 100. In this process, the plug plate 406 is inserted into the slot 1007 and is magnetically attracted by the magnetic block 5, the driving gear 403 on the same side is separated from the tower gear group 41, and the driving gear 403 on the other side is meshed with the tower gear group 41, so that the other reciprocating screw rod 42 drives the transverse frame 43 to move horizontally, realizing the continuous cleaning of the heat sink fins 1 and enhancing the heat transfer operation;

[0070] The battery body 200 is inserted into the placement hole 601 of the battery rack 6, and the battery rack 6 and the battery box assembly 100 are directly fixed by bolts to ensure the basic stability of the battery body 200 inside the battery box assembly 100;

[0071] The adjustment frame 7 slides in the adjustment slot 602, and the spring chamber 71 and the locking mechanism 9 at the end of the adjustment frame 7 are used to adjust and lock the position of the adjustment frame 7. When adjustment is required, the locking frame 903 is pressed toward the direction close to the battery box group 100, so that the insertion rod 904 compresses the return spring 905, and the rotation lock of the spline screw cap 902 is released. The position of the adjustment frame 7 can be adjusted by rotating the spline screw cap 902;

[0072] When the adjustment frame 7 moves, the connecting rod 803 drives the clamping plate 802 in the embedded groove 603 to move. The meshing synchronization of the gear column 801 enables the clamping plate 802 in the same embedded groove 603 to move in the opposite direction synchronously, and cooperates with the balance bar 6031 and the sleeve groove 8021 to lock the position of the battery body 200, so as to prevent the battery body 200 from shaking in the placement hole 601.

[0073] The control method of the present invention is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power supply also belongs to the common general knowledge in the art. Moreover, the present invention is mainly used to protect mechanical devices. Therefore, the control method and circuit connection of the present invention will not be explained in detail herein.

[0074] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A high-performance lithium-ion battery pack for electric vehicles, comprising a battery box assembly and a battery body, characterized in that: The battery body is arranged inside the battery box group, a heat dissipation fin for providing heat transfer inside the battery box group is fixedly inserted at the bottom of the battery box group, a mounting compartment is arranged in the middle of the inner cavity of the battery box group, an air collecting duct is fixed in the mounting compartment, a sealing plate is arranged on the top surface of the battery box group, an air collecting sleeve connected to the air collecting duct is arranged on the side of the battery box group, an air outlet guard plate is arranged on the other side of the battery box group, and a balancing groove is arranged at the bottom of the battery box group; The inner end of the air collecting duct is provided with a fan blade located on one side of the air outlet guard plate, the axis of the fan blade is provided with an active bevel gear, and the end of the battery box group is provided with a transmission device located on one side of the fan blade; The transmission device comprises a main shaft, a driven bevel gear and a driving spur gear, the main shaft is rotatably connected to the end of the battery box group, the driven bevel gear is fixedly installed on the end of the main shaft, the driven bevel gear is meshed with the driving bevel gear, and the driving spur gear is fixedly installed in the middle of the main shaft; The transmission device also includes an adjustment mechanism installed at the end of the battery box group, and the adjustment mechanism includes a swing frame rotatably connected to the end of the battery box group, a transmission gear meshing with the active spur gear is rotatably provided on the swing frame, and a driving gear meshing with the transmission gear is rotatably provided on the swing frame; The end of the air receiving duct is provided with a tower gear group meshing with the driving gear, and the inner end of the installation bin is provided with a reciprocating screw rod; The end of the reciprocating screw rod is provided with a synchronous gear meshing with the tower gear set, the reciprocating screw rod is provided with a transverse frame, the transverse frame is provided with a scraper acting on the outer surface of the heat dissipation fin, and the scraper is slidably sleeved with the balance groove; A reversing push rod is fixedly installed at the end of the transverse frame, a stop ear that contacts and matches the reversing push rod is rotatably provided on the swing frame, and a stop block is also provided on the swing frame; An inserting plate is fixedly installed on the inner side of the swing frame, and a slot is opened on the side of the end of the battery box group. A magnetic block that matches the magnetic attraction of the inserting plate is fixedly installed in the slot.

2. A high-performance lithium-ion battery pack for electric vehicles according to claim 1, characterized in that: The battery box group is provided with a battery rack for clamping the battery body, and the battery rack is provided with a placement hole for inserting the battery body.

3. A high-performance lithium-ion battery pack for electric vehicles according to claim 2, characterized in that: An embedded groove is provided on the inner side of the battery rack, and a clamping mechanism for locking the battery body is provided in the embedded groove. Adjustment grooves are provided on both sides of the battery rack, and guide grooves corresponding to the positions of the embedded grooves are provided in the adjustment grooves.

4. A high-performance lithium-ion battery pack for electric vehicles according to claim 3, characterized in that: A guide hole is provided in the guide groove, an adjustment frame is slidably sleeved in the adjustment groove and drives the clamping mechanism to move in the embedded groove, and both sides of the battery frame are provided with assembly plates for closing the adjustment groove.

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