Automatic adjusting buffer ventilation device for automobile lithium battery

Abstract

The invention discloses an automatic adjusting buffer ventilation device for an automobile lithium battery in the technical field of automobile lithium batteries, which comprises a box body, a box cover is arranged above the box body, a placing plate is slidably connected in the box body, ventilation holes are uniformly formed in the surface of the placing plate, a mounting frame is slidably connected to the top of the placing plate, and a first rack is arranged on the right side of the top of the placing plate. A mounting frame is arranged in the box body, a locking assembly is arranged on the front side wall of the mounting frame, a clamping assembly is arranged in the mounting frame, and four sets of buffering assemblies are arranged at the bottom in the box body, the position of the mounting frame can be adjusted under the action of the locking assembly and a first rack, and therefore the position of the clamping assembly can be adjusted according to the size of a lithium battery; the clamping assembly can clamp a lithium battery, the lithium battery can be protected when clamped under the action of the elastic assembly, and the lithium battery can be buffered under the action of the buffer assembly, so that shaking generated when an automobile runs can be buffered, and it is guaranteed that the lithium battery cannot be damaged.

Description

Technical Field

[0001] This invention relates to the field of automotive lithium battery technology, specifically to an automatic adjustable buffer ventilation device for automotive lithium batteries. Background Technology

[0002] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloys as the positive / negative electrode material and a non-aqueous electrolyte solution. The earliest lithium metal battery was proposed and studied by Gilbert N. Lewis in 1912. In the 1970s, M.S. Whittingham proposed and began researching lithium-ion batteries. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and use require very strict environmental controls. With the development of science and technology, lithium batteries have become mainstream. Lithium batteries used in new energy vehicles are auxiliary devices used in electric vehicles to transmit electrical energy, thereby better realizing the power transmission of the vehicle. They are widely used in the fields of energy storage and power supply for new energy vehicles. Lithium batteries are mostly placed in a box during use. Existing lithium battery devices do not have additional buffer mechanisms, which can easily cause vibrations when the car is running, thus making the lithium batteries prone to damage. However, existing boxes do not have buffer mechanisms to protect the lithium batteries. Moreover, lithium batteries easily generate heat during operation, and this heat easily accumulates inside the box. Currently, most lithium battery heat dissipation relies on the heat dissipation holes on the outer wall of the box for ventilation, which has poor heat dissipation effect. Therefore, we propose an automatic adjustment buffer ventilation device for automotive lithium batteries. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic adjustable buffer ventilation device for automotive lithium batteries to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an automatic adjusting buffer ventilation device for automotive lithium batteries, comprising a housing, a housing cover on top of the housing, a placement plate slidably connected inside the housing, ventilation holes evenly distributed on the surface of the placement plate, a mounting bracket slidably connected to the top of the placement plate, a first toothed rack on the right side of the top of the placement plate, a locking component on the front side wall of the mounting bracket, a clamping component inside the mounting bracket, and four sets of buffer components at the bottom of the housing, each buffer component including a sleeve at the bottom of the housing, and a slidably connected component inside the sleeve. The movable plate has a first buffer spring at its bottom, one end of which is connected to the bottom of the inner sleeve. The top of the movable plate has a buffer rod, one end of which passes through the top of the inner sleeve and connects to the bottom of the placement plate. A second buffer spring is sleeved on the outer wall of the buffer rod, one end of which is connected to the bottom of the placement plate, and the other end of which is connected to the top of the sleeve. Air inlets are provided on the lower left and right side walls of the box. A rotary motor is slidably connected to the lower part of the box, and a fan blade is connected to the output end of the rotary motor. A reciprocating assembly is provided at the bottom of the box.

[0005] Furthermore, the locking assembly includes a first fixing block and a second fixing block provided on the front side wall of the mounting bracket. A screw is connected to the top of the second fixing block via a bearing. One end of the screw passes through the bottom of the second fixing block and is connected to a rotating knob provided on the outside. A lifting plate is sleeved on the outer wall of the screw. One end of the lifting plate is provided with a second rack that meshes with the first rack.

[0006] Furthermore, the front side wall of the mounting frame is provided with a guide groove, and the rear side wall of the lifting plate is provided with a guide block that matches the guide groove.

[0007] Furthermore, the clamping assembly includes a bidirectional lead screw installed within the mounting frame. Both ends of the bidirectional lead screw are connected to bearings installed on the left and right side walls of the mounting frame, respectively. A second driven bevel gear is sleeved on the outer wall of the bidirectional lead screw. A second driving bevel gear meshing with the second driven bevel gear is installed within the mounting frame. A rotating shaft is provided at the top of the second driving bevel gear. One end of the rotating shaft passes through the top of the mounting frame and is connected to an external adjusting knob. Clamping plates are sleeved on both the left and right outer walls of the bidirectional lead screw. Sliding grooves are opened on the opposite side walls of the two sets of clamping plates. Elastic components are installed in the sliding grooves.

[0008] Furthermore, a limiting groove is provided at the top of the mounting frame, and a limiting block matching the limiting groove is provided at the top of both sets of clamping plates.

[0009] Furthermore, the elastic component includes a fixed rod disposed within the slide groove, with both ends of the fixed rod connected to the upper and lower side walls of the slide groove, and movable blocks sleeved on the upper and lower outer walls of the fixed rod. Two sets of second springs are sleeved on the outer walls of the fixed rod, with one end of each set of second springs connected to the upper and lower side walls of the slide groove, and the other end of each set of second springs connected to the side walls of the two sets of movable blocks away from each other. Connecting rods are hinged to the right side walls of the two sets of movable blocks, and a protective plate is disposed on the right side of the clamping plate. One end of each set of connecting rods is hinged to the left side wall of the protective plate.

[0010] Furthermore, the reciprocating assembly includes a slide rod located at the lower part of the housing, with both ends of the slide rod connected to the left and right side walls of the housing, respectively. A slider is fitted onto the outer wall of the slide rod, with the top of the slider connected to the bottom of the rotary motor. A first spring is fitted onto the outer wall of the slide rod, with one end connected to the left side wall of the slider and the other end connected to the left side wall of the housing. A mounting block is located on the front side wall of the slider. A fixed box is located at the bottom of the housing, and a reciprocating screw is located inside the fixed box. Both ends of the reciprocating screw are connected to bearings located on the left and right side walls of the fixed box, respectively. A sliding block is fitted onto the outer wall of the reciprocating screw, and a pressing block is located on the rear side wall of the sliding block. A first driven bevel gear is fitted onto the outer wall of the reciprocating screw. A first driving bevel gear meshing with the first driven bevel gear is located inside the fixed box. A motor is located on the front side wall of the fixed box, with the motor output end penetrating the front side wall of the fixed box and connected to the front side wall of the first driving bevel gear.

[0011] Furthermore, a sliding groove is provided on the front side wall of the fixing box, and the extrusion block is slidably connected within the sliding groove.

[0012] Furthermore, a baffle is sleeved on the outer wall of the reciprocating screw, and the front and rear side walls of the baffle are respectively connected to the front and rear side walls inside the fixed box. The baffle is located on the right side of the first driven bevel gear.

[0013] Furthermore, the mounting block is arranged in the shape of an isosceles trapezoid.

[0014] Furthermore, air vents are provided on the upper part of the front and rear side walls of the housing, and dustproof nets are provided on the inner walls of the air vents.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The position of the mounting bracket can be adjusted by the locking component and the first rack, thereby allowing the position of the clamping component to be adjusted according to the size of the lithium battery. The clamping component can clamp the lithium battery, and the elastic component protects the lithium battery during clamping. The buffer component cushions the lithium battery, thus mitigating vibrations during vehicle operation and preventing damage. The rotating motor, fan blades, ventilation holes, air inlet, and air outlet provide heat dissipation and ventilation for the lithium battery. The reciprocating component drives the fan blades to move back and forth, providing comprehensive heat dissipation for the lithium battery, resulting in good heat dissipation and improved battery life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a top view of the structure of the present invention;

[0018] Figure 3 This is a schematic diagram of structure A of the present invention;

[0019] Figure 4 This is a schematic diagram of the internal structure of the chute of the present invention;

[0020] Figure 5 This is a schematic diagram of structure B of the present invention;

[0021] Figure 6 This is a schematic diagram of the internal structure of the sleeve of the present invention;

[0022] Figure 7 This is a top view of the internal structure of the fixing box of the present invention.

[0023] In the diagram: 1. Housing; 2. Buffer assembly; 20. Sleeve; 21. First buffer spring; 22. Movable plate; 23. Buffer rod; 24. Second buffer spring; 3. Reciprocating assembly; 30. Slide rod; 31. Mounting block; 32. Slider; 33. First spring; 34. Fixing box; 35. Reciprocating lead screw; 36. Sliding block; 37. Sliding groove; 38. Pressing block; 39. Baffle; 300. First driven bevel gear; 301. First driving bevel gear; 302. Motor; 4. Rotary motor; 5. Fan blade; 6. Placement plate; 7. First rack; 8. Locking assembly; 80. 81. First fixed block; 82. Screw; 83. Rotating knob; 84. Lifting plate; 85. Second rack; 9. Second fixed block; 10. Clamping assembly; 11. Clamping plate; 12. Double-acting lead screw; 13. Second driven bevel gear; 14. Second driving bevel gear; 15. Rotating shaft; 16. Adjusting knob; 17. Slide groove; 18. Mounting bracket; 19. Box cover; 10. Dustproof net; 11. Elastic assembly; 12. Moving block; 13. Fixed rod; 14. Second spring; 15. Connecting rod; 16. Protective plate; 17. Air outlet; 18. Vent hole; 19. Air inlet. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1:

[0026] Please see Figure 1-6This invention provides a technical solution: an automatic adjustable buffer ventilation device for automotive lithium batteries, comprising a housing 1, a housing cover 11 on top of the housing 1, a placement plate 6 slidably connected inside the housing 1, ventilation holes 15 evenly distributed on the surface of the placement plate 6, a mounting bracket 10 slidably connected to the top of the placement plate 6, a first rack 7 on the top right side of the placement plate 6, a locking component 8 on the front side wall of the mounting bracket 10, a clamping component 9 inside the mounting bracket 10, four sets of buffer components 2 at the bottom of the housing 1, each buffer component 2 including a sleeve 20 at the bottom of the housing 1, a movable plate 22 slidably connected inside the sleeve 20, a first buffer spring 21 at the bottom of the movable plate 22, one end of the first buffer spring 21 connected to the bottom of the sleeve 20, and a buffer rod 23 at the top of the movable plate 22, one end of the buffer rod 23 penetrating the top of the sleeve 20 and connecting to the placement plate 6. The bottom of the plate 6 is connected, and the outer wall of the buffer rod 23 is fitted with a second buffer spring 24. One end of the second buffer spring 24 is connected to the bottom of the plate 6, and the other end of the second buffer spring 24 is connected to the top of the sleeve 20. Air inlets 16 are opened on the lower side walls of the box 1. A rotary motor 4 is slidably connected to the lower part of the box 1. A fan blade 5 is connected to the output end of the rotary motor 4. A reciprocating assembly 3 is provided at the bottom of the box 1. Air outlets 14 are opened on the upper part of the front and rear side walls of the box 1. A dustproof net 12 is provided on the inner wall of the air outlet 14. The dustproof net 12 can prevent dust in the air from entering the box 1. The rotary motor 4 drives the fan blade 5 to rotate. Air enters the box 1 from the air inlet 16, and then the fan blade 5 delivers the air upward. The air carries the heat generated by the lithium battery and is discharged upward from the air outlet 14, thereby dissipating heat from the lithium battery.

[0027] Example 2:

[0028] Please see Figure 2 and Figure 5 The locking assembly 8 includes a first fixing block 80 and a second fixing block 85 provided on the front side wall of the mounting bracket 10. The top of the second fixing block 85 is connected to a screw 81 via a bearing. One end of the screw 81 passes through the bottom of the second fixing block 85 and is connected to a rotating knob 82 provided on the outside. A lifting plate 83 is sleeved on the outer wall of the screw 81. A guide groove is provided on the front side wall of the mounting bracket 10. A guide block matching the guide groove is provided on the rear side wall of the lifting plate 83. Under the action of the guide groove and the guide block, the lifting plate 83 moves up and down on the outer wall of the screw 81. A second rack 84 that meshes with the first rack 7 is provided at one end of the lifting plate 83.

[0029] Example 3:

[0030] Please see Figure 1 and Figure 3The clamping assembly 9 includes a bidirectional lead screw 91 installed inside the mounting frame 10. Both ends of the bidirectional lead screw 91 are connected to bearings installed on the left and right side walls of the mounting frame 10, respectively. A second driven bevel gear 92 is sleeved on the outer wall of the bidirectional lead screw 91. A second driving bevel gear 93 that meshes with the second driven bevel gear 92 is installed inside the mounting frame 10. A rotating shaft 94 is installed at the top of the second driving bevel gear 93. One end of the rotating shaft 94 passes through the top of the mounting frame 10 and is connected to an adjustment knob 95 installed on the outside. Clamping plates 90 are sleeved on the left and right outer walls of the bidirectional lead screw 91. A limit groove is opened at the top of the mounting frame 10. The top of both clamping plates 90 is provided with a limit block that matches the limit groove. Under the action of the limit groove and the limit block, the clamping plates 90 move more stably on the outer wall of the bidirectional lead screw 91. A sliding groove 96 is opened on the opposite side wall of both clamping plates 90. An elastic component 13 is installed in the sliding groove 96.

[0031] Example 4:

[0032] Please see Figure 4 The elastic component 13 includes a fixed rod 131 provided in the slide groove 96. The two ends of the fixed rod 131 are respectively connected to the upper and lower side walls of the slide groove 96. Moving blocks 130 are sleeved on the upper and lower outer walls of the fixed rod 131. Two sets of second springs 132 are sleeved on the outer walls of the fixed rod 131. One end of the two sets of second springs 132 is respectively connected to the upper and lower side walls of the slide groove 96. The other end of the two sets of second springs 132 is respectively connected to the side walls of the two sets of moving blocks 130 away from each other. Connecting rods 133 are hinged to the right side walls of the two sets of moving blocks 130. A protective plate 134 is provided on the right side of the clamping plate 90. One end of the two sets of connecting rods 133 is hinged to the left side wall of the protective plate 134.

[0033] Example 5:

[0034] Please see Figure 2 and Figure 7The reciprocating assembly 3 includes a slide rod 30 located at the bottom of the housing 1. Both ends of the slide rod 30 are connected to the left and right side walls of the housing 1, respectively. A slider 32 is fitted onto the outer wall of the slide rod 30. The top of the slider 32 is connected to the bottom of the rotary motor 4. A first spring 33 is fitted onto the outer wall of the slide rod 30. One end of the first spring 33 is connected to the left side wall of the slider 32, and the other end is connected to the left side wall of the housing 1. A mounting block 31 is located on the front side wall of the slider 32. A fixing box 34 is located at the bottom of the housing 1, and a reciprocating screw is located inside the fixing box 34. The reciprocating lead screw 35 is connected at both ends to bearings located on the left and right side walls of the fixed box 34. A sliding block 36 is sleeved on the outer wall of the reciprocating lead screw 35, and a pressing block 38 is located on the rear side wall of the sliding block 36. A sliding groove 37 is provided on the front side wall of the fixed box 34, and the pressing block 38 slides within the sliding groove 37. Under the action of the sliding groove 37, the sliding block 36 moves more stably on the left and right sides of the outer wall of the reciprocating lead screw 35. A first driven bevel gear 300 is sleeved on the outer wall of the reciprocating lead screw 35. The fixed box 34 contains a bearing that corresponds to the first driven bevel gear 300. The first driving bevel gear 301 meshes with gear 300. A motor 302 is provided on the front side wall of the fixed box 34. The output end of the motor 302 passes through the front side wall of the fixed box 34 and is connected to the front side wall of the first driving bevel gear 301. A baffle 39 is sleeved on the outer wall of the reciprocating screw 35. The front and rear side walls of the baffle 39 are respectively connected to the front and rear side walls inside the fixed box 34. The baffle 39 is located on the right side of the first driven bevel gear 300. The baffle 39 can limit the sliding block 36. The mounting block 31 is arranged in the shape of an isosceles trapezoid. The sliding block 36 drives the pressing block. The extrusion block 38 moves and presses the inclined surface of the mounting block 31. The mounting block 31 drives the slider 32 to move on the outer wall of the slide rod 30. The slider 32 presses the first spring 33. When the extrusion block 38 separates from the inclined surface of the mounting block 31, the slider 32 moves left and right on the outer wall of the slide rod 30 under the action of the elastic force of the first spring 33. Thus, the slider 32 drives the rotary motor 4 to move left and right back and forth. The rotary motor 4 drives the fan blade 5 to move left and right back and forth, thereby enabling comprehensive heat dissipation of the lithium battery with good heat dissipation effect.

[0035] Working principle: The lithium battery is placed on the placement plate 6. Then, the operator moves the mounting bracket 10 to directly above the lithium battery. The operator then rotates the rotary knob 82, causing the screw 81 to rotate. Under the action of the guide groove and guide block, the lifting plate 83 moves downwards on the outer wall of the screw 81. The lifting plate 83 drives the second rack 84 to mesh with the first rack 7, thus fixing the position of the mounting bracket 10. The operator then rotates the adjustment knob 95, which drives the rotating shaft 94 to rotate. The rotating shaft 94 drives the second active bevel gear 93 to rotate. The second active bevel gear 93 then drives... The second driven bevel gear 92 rotates, driving the bidirectional lead screw 91 to rotate. Under the action of the limiting groove and the limiting block, the two sets of clamping plates 90 move relative to each other. The clamping plates 90 drive the protective plate 134 to move, and the protective plate 134 presses the connecting rod 133. The connecting rod 133 drives the moving block 130 to move on the outer wall of the fixed rod 131. The moving block 130 presses the second spring 132, thereby protecting the lithium battery when clamping it. When the car vibrates while driving, the lithium battery drives the placement plate 6 to move downwards, pressing the second return spring 24 and the buffer rod 23. 3. The movable plate 22 moves downward to compress the first buffer spring 21, thereby buffering and protecting the lithium battery and ensuring that the lithium battery is not damaged. The rotating motor 4 drives the fan blade 5 to rotate, and air enters the housing 1 from the air inlet 16. Then, the fan blade 5 transports the air upward. The air carries the heat generated by the lithium battery and is discharged upward from the air outlet 14, thereby dissipating heat from the lithium battery. The motor 302 drives the first driving bevel gear 301 to rotate, the first driving bevel gear 301 drives the first driven bevel gear 300 to rotate, and the first driven bevel gear 300 drives the reciprocating screw 35 to rotate in the sliding groove 37. Under the action of the sliding block 36, the sliding block 36 moves back and forth on the outer wall of the reciprocating screw 35. The sliding block 36 drives the pressing block 38 to move. The pressing block 38 presses the inclined surface of the mounting block 31. The mounting block 31 drives the slider 32 to move on the outer wall of the slide rod 30. The slider 32 presses the first spring 33. When the pressing block 38 separates from the inclined surface of the mounting block 31, the slider 32 moves left and right on the outer wall of the slide rod 30 under the action of the elastic force of the first spring 33. Thus, the slider 32 drives the rotary motor 4 to move back and forth left and right. The rotary motor 4 drives the fan blade 5 to move back and forth left and right, thereby enabling comprehensive heat dissipation of the lithium battery with good heat dissipation effect.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic adjustable buffer ventilation device for automotive lithium batteries, comprising a housing (1), wherein a housing cover (11) is provided on the top of the housing (1), characterized in that: A placement plate (6) is slidably connected inside the housing (1). Ventilation holes (15) are evenly distributed on the surface of the placement plate (6). A mounting bracket (10) is slidably connected to the top of the placement plate (6). A first rack (7) is provided on the right side of the top of the placement plate (6). A locking assembly (8) is provided on the front side wall of the mounting bracket (10). A clamping assembly (9) is provided inside the mounting bracket (10). Four sets of buffer assemblies (2) are provided at the bottom of the housing (1). Each buffer assembly (2) includes a sleeve (20) at the bottom of the housing (1). A movable plate (22) is slidably connected inside the sleeve (20). A first buffer spring (21) is provided at the bottom of the movable plate (22). The first buffer spring (21)... The end is connected to the bottom of the sleeve (20). The top of the movable plate (22) is provided with a buffer rod (23). One end of the buffer rod (23) passes through the top of the sleeve (20) and is connected to the bottom of the placement plate (6). The outer wall of the buffer rod (23) is fitted with a second buffer spring (24). One end of the second buffer spring (24) is connected to the bottom of the placement plate (6), and the other end of the second buffer spring (24) is connected to the top of the sleeve (20). Air inlets (16) are opened on the lower left and right side walls of the box (1). A rotary motor (4) is slidably connected to the lower part of the box (1). A fan blade (5) is connected to the output end of the rotary motor (4). A reciprocating assembly (3) is provided at the bottom of the box (1).

2. The automatic adjusting buffer ventilation device for automotive lithium batteries according to claim 1, characterized in that: The locking assembly (8) includes a first fixing block (80) and a second fixing block (85) provided on the front side wall of the mounting bracket (10). The top of the second fixing block (85) is connected to a screw (81) via a bearing. One end of the screw (81) passes through the bottom of the second fixing block (85) and is connected to a rotating knob (82) provided on the outside. A lifting plate (83) is sleeved on the outer wall of the screw (81). One end of the lifting plate (83) is provided with a second rack (84) that meshes with the first rack (7).

3. The automatic adjusting buffer ventilation device for automotive lithium batteries according to claim 2, characterized in that: The front side wall of the mounting bracket (10) is provided with a guide groove, and the rear side wall of the lifting plate (83) is provided with a guide block that matches the guide groove.

4. The automatic adjusting buffer ventilation device for automotive lithium batteries according to claim 1, characterized in that: The clamping assembly (9) includes a bidirectional lead screw (91) provided in the mounting frame (10). The two ends of the bidirectional lead screw (91) are respectively connected to bearings provided on the left and right side walls of the mounting frame (10). A second driven bevel gear (92) is sleeved on the outer wall of the bidirectional lead screw (91). A second driving bevel gear (93) that meshes with the second driven bevel gear (92) is provided in the mounting frame (10). A rotating shaft (94) is provided at the top of the second driving bevel gear (93). One end of the rotating shaft (94) passes through the top of the mounting frame (10) and is connected to an adjustment knob (95) provided on the outside. Clamping plates (90) are sleeved on the left and right outer walls of the bidirectional lead screw (91). Sliding grooves (96) are opened on the opposite side walls of the two sets of clamping plates (90). An elastic component (13) is provided in the sliding groove (96).

5. The automatic adjusting buffer ventilation device for automotive lithium batteries according to claim 4, characterized in that: The mounting bracket (10) has a limiting groove at the top, and the top of both clamping plates (90) is provided with a limiting block that matches the limiting groove.

6. The automatic adjusting buffer ventilation device for automotive lithium batteries according to claim 4, characterized in that: The elastic component (13) includes a fixed rod (131) provided in the slide groove (96). The two ends of the fixed rod (131) are respectively connected to the upper and lower side walls of the slide groove (96). The upper and lower outer walls of the fixed rod (131) are each fitted with a movable block (130). The outer walls of the fixed rod (131) are each fitted with two sets of second springs (132). One end of the two sets of second springs (132) is respectively connected to the upper and lower side walls of the slide groove (96). The other end of the two sets of second springs (132) is respectively connected to the side walls of the two sets of movable blocks (130) away from each other. The right side wall of the two sets of movable blocks (130) is hinged with a connecting rod (133). The right side of the clamping plate (90) is provided with a protective plate (134). One end of the two sets of connecting rods (133) is hinged to the left side wall of the protective plate (134).

7. The automatic adjusting buffer ventilation device for automotive lithium batteries according to claim 1, characterized in that: The reciprocating assembly (3) includes a slide rod (30) located at the bottom of the housing (1). Both ends of the slide rod (30) are connected to the left and right side walls of the housing (1). A slider (32) is fitted onto the outer wall of the slide rod (30). The top of the slider (32) is connected to the bottom of the rotary motor (4). A first spring (33) is fitted onto the outer wall of the slide rod (30). One end of the first spring (33) is connected to the left side wall of the slider (32), and the other end is connected to the left side wall of the housing (1). A mounting block (31) is located on the front side wall of the slider (32). A fixing box (34) is located at the bottom of the housing (1). The fixing box (34) contains... A reciprocating lead screw (35) is provided, and the two ends of the reciprocating lead screw (35) are respectively connected to bearings provided on the left and right side walls of the fixed box (34). A sliding block (36) is sleeved on the outer wall of the reciprocating lead screw (35), and a pressing block (38) is provided on the rear side wall of the sliding block (36). A first driven bevel gear (300) is sleeved on the outer wall of the reciprocating lead screw (35). A first driving bevel gear (301) that meshes with the first driven bevel gear (300) is provided in the fixed box (34). A motor (302) is provided on the front side wall of the fixed box (34). The output end of the motor (302) passes through the front side wall of the fixed box (34) and is connected to the front side wall of the first driving bevel gear (301).

8. The automatic adjusting buffer ventilation device for automotive lithium batteries according to claim 7, characterized in that: The front side wall of the fixed box (34) is provided with a sliding groove (37), and the extrusion block (38) is slidably connected in the sliding groove (37).

9. The automatic adjusting buffer ventilation device for automotive lithium batteries according to claim 7, characterized in that: The reciprocating lead screw (35) is sleeved with a baffle (39) on its outer wall. The front and rear side walls of the baffle (39) are respectively connected to the front and rear side walls of the fixed box (34). The baffle (39) is located on the right side of the first driven bevel gear (300).

10. The automatic adjusting buffer ventilation device for automotive lithium batteries according to claim 7, characterized in that: The mounting block (31) is arranged in the shape of an isosceles trapezoid.

11. The automatic adjusting buffer ventilation device for automotive lithium batteries according to claim 1, characterized in that: The box (1) has air outlets (14) on the upper part of the front and rear side walls, and the inner wall of the air outlets (14) is provided with dustproof nets (12).

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