Lithium battery module assembly structure and assembly method

Abstract

The invention relates to the technical field of lithium batteries, and discloses a lithium battery module assembly structure which comprises an assembly box. A battery is placed in a placement box and is vertically inserted to extrude a limiting plate, the limiting plate is extruded to extrude a second spring, through extrusion of the second spring, it is guaranteed that the battery is fixed, and a transmission rod is rotated to drive a first belt wheel, a belt and a second belt wheel to rotate; a second belt wheel is rotated to drive a gear rotating rod to rotate, the rotating gear rotating rod drives a gear plate and a baffle to contract, a ventilation net is exposed, then a pushing plate is pushed to a rotating L-shaped groove, the gear plate and the gear rotating rod are disconnected, and the gear plate and the gear rotating rod are connected through an extruded third spring; and then the motor rotates reversely, the ventilation net is blocked through the baffle, the battery is separated, the heat dissipation performance of the battery is guaranteed, rapid cooling of the battery is guaranteed through the ventilation net, and the stability of the battery during use is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to a lithium battery module assembly structure and an assembly method. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. In 1912, lithium metal batteries were first proposed and studied by Gilbert N. Lewis. In the 1970s, MS Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream.

[0003] After searching, the invention patent announcement number is CN 113725535 B. It is proposed that the invention is applicable to the field of soft-pack lithium batteries, and provides a soft-pack lithium battery cell module assembly structure and assembly method. The structure includes a cell, a control panel, a power connection line, an insulating plate, a connecting component, a shock-absorbing component and a heat dissipation component. The control panel is connected to the top of the cell through a wire, which solves the problem that the existing soft-pack lithium battery generally adopts a layered packaging structure when assembled, and only uses nylon tape or insulating silicone on the surface for connection and protection. The firmness after packaging is low and it is easy to fall apart when used. Moreover, the heat dissipation effect of the soft-pack lithium battery after packaging depends entirely on the natural wind blowing on its own shell to dissipate heat. This passive heat dissipation method is inefficient. The internal temperature cannot be dissipated in time after long-term use, which easily aggravates the wear of the soft-pack battery and causes the soft-pack battery to bulge. It is inconvenient for users to use and increases the danger of using soft-pack batteries.

[0004] The existing lithium battery module assembly structure is connected by glue, which cannot ensure that the heat of the battery is better dissipated. The battery is then assembled inside the installation box and dissipated by self-heating air. At that time, the battery has poor heat dissipation and is prone to spontaneous combustion at high temperatures, which cannot ensure the usability of the battery. Summary of the invention

[0005] The purpose of the present invention is to provide a lithium battery module assembly structure and assembly method, which solves the problem proposed in the background technology that the heat of the battery cannot be better dissipated, and the heat is dissipated by self-heating air. At that time, the heat dissipation of the battery is poor and the high temperature of the battery is easy to spontaneously ignite, and then the usability of the battery cannot be guaranteed.

[0006] An embodiment of the present application provides a lithium battery module assembly structure, including an assembly box, a box cover is provided on the upper surface of the assembly box, a pulling plate is slidably connected to the lower internal end of the assembly box, an installation box is fixedly connected to the lower internal end of the assembly box, a fixed cover is provided on the upper surface of the installation box, a connecting plate is fixedly connected to the lower surface of the fixed cover, a placement box is fixedly connected to the lower internal end of the installation box, a ventilation net is provided at the lower internal end of the box cover, and a motor is fixedly connected to the upper internal end of the box cover.

[0007] By adopting the above technical solution, the battery is placed inside the placement box and inserted vertically to squeeze the limit plate. The limit plate is squeezed to squeeze the second spring. The battery is fixed by the squeezing of the second spring. Then the connecting plate on the fixed cover is inserted into the installation box to fix the battery. At the same time, the pulling plate is pulled to drive the pulling column and the fixing column to retract outward. Then the first spring is squeezed by the fixing column. When the connecting plate is inserted into the installation box, the fixing groove position on the connecting plate moves to the fixing column position. Release the pulling on the pulling plate, and the first spring under compression will bounce the fixing column into the inside of the connecting plate to ensure the fixation of the fixing cover and the installation box. Then the box cover will seal the assembly box through screws to ensure the protection of the battery. When the battery is used for a long time and the temperature rises, it is necessary to dissipate heat for the battery, and the pushing plate is pushed out of the L-shaped groove on the box cover. The third spring under compression will bounce the moving frame and the gear plate through one end of the baffle to the other end to connect with the gear rotating rod, and then the driving motor drives the transmission rod to rotate, and the rotating transmission rod drives the first pulley and the second pulley of the belt to rotate, and the rotating second pulley drives the gear rotating rod to rotate, and the rotating gear rotating rod drives the gear plate and the baffle to shrink, exposing the ventilation net, and then push the pushing plate to the rotating L-shaped groove, disconnect the gear plate from the gear rotating rod, and rotate the transmission rod to drive the fan to rotate to quickly dissipate heat for the battery. When heat dissipation is not needed, the pushing plate is pushed out from the L-shaped groove, and the gear plate is connected to the gear rotating rod through the third spring under compression, and then the motor rotates in the opposite direction to block the ventilation net through the baffle.

[0008] Optionally, a pulling column is fixedly connected to the left end of the pulling plate on the front side, a fixing column is fixedly connected to the left end of the pulling column on the front side, and a first spring is fixedly connected to the right end of the fixing column on the front side.

[0009] By adopting the above technical solution, quick installation and disassembly of parts can be ensured.

[0010] Optionally, the inner lower end of the placement box is movably connected to a limiting plate, and the left end of the surface side of the limiting plate is fixedly connected to a second spring.

[0011] By adopting the above technical solution, the position of the motor is fixed.

[0012] Optionally, the upper surface end of the motor is fixedly connected to a transmission rod, the lower surface end of the transmission rod is fixedly connected to a first pulley, the upper surface end of the transmission rod is fixedly connected to a fan, the inner right end of the first pulley is transmission-connected to a belt, the inner left end of the belt is transmission-connected to a second pulley, the upper surface end of the second pulley is fixedly connected to a gear rotating rod, the right end of the surface side of the gear rotating rod is meshingly connected to a gear plate, the upper surface end of the gear plate is slidably connected to a moving frame, the upper surface end of the moving frame is slidably connected to a push plate, the right end of the surface side of the moving frame is fixedly connected to a third spring, the lower surface end of the moving frame is fixedly connected to a sliding block, and the right end of the surface side of the gear plate is fixedly connected to a baffle.

[0013] By adopting the above technical solution, it is ensured that the high-temperature battery is cooled and then the ventilation network is sealed.

[0014] Optionally, an L-shaped groove is provided at the inner upper end of the box cover.

[0015] By adopting the above technical solution, the parts are limited.

[0016] Optionally, a sliding plate is fixedly connected to the upper end of the surface of the gear plate, and a sliding groove is provided at the lower end of the interior of the movable frame.

[0017] By adopting the above technical solution, the usability of the parts is enhanced.

[0018] Optionally, a sliding groove is provided at the inner right end of the baffle.

[0019] By adopting the above technical solution, it is convenient to move the parts.

[0020] Optionally, two sets of fixing grooves are formed at the inner lower end of the connecting plate.

[0021] By adopting the above technical solution, the overall fixed connection is ensured, which makes it easy to disassemble and install.

[0022] Optionally, a sliding groove is provided at the inner upper end of the movable frame, and the size of the sliding groove is adapted to the size of the push plate.

[0023] By adopting the above technical solution, it is easy to move the parts and avoid shaking during the movement.

[0024] The embodiment of the present application provides a lithium battery module assembly method: S1: Place the battery inside the placement box, insert it vertically to squeeze the limit plate, the limit plate is squeezed to squeeze the second spring, and the second spring is squeezed to ensure that the battery is fixed, and then the connecting plate on the fixed cover is inserted into the installation box to fix the battery, and at the same time, the pulling plate is pulled to drive the pulling column and the fixed column to shrink outward, and then the first spring is squeezed by the fixed column. When the connecting plate is inserted into the installation box, the fixed groove position on the connecting plate moves to the fixed column position. Release the pull on the pulling plate, and the squeezed first spring will bounce the fixed column into the inside of the connecting plate to ensure the fixation of the fixed cover and the installation box. Then the box cover is sealed with screws to ensure the protection of the battery and the battery is quickly fixed. Then, by isolating the battery, the heat of the battery is ensured to be quickly dissipated.

[0025] The embodiment of the present application provides a lithium battery module assembly method: S2: When the battery is used for a long time and the temperature rises, the battery needs to be cooled, and the push plate is pushed out of the L-shaped groove on the box cover. The third spring is squeezed to bounce the moving frame and the gear plate through one end of the baffle to the other end to connect with the gear rotating rod, and then the driving motor drives the transmission rod to rotate, and the rotating transmission rod drives the first pulley and the second pulley to rotate, and the rotating second pulley drives the gear rotating rod to rotate, and the rotating gear rotating rod drives the gear plate and the baffle to shrink, exposing the ventilation net, and then push the push plate onto the rotating L-shaped groove, disconnect the gear plate from the gear rotating rod, and rotate the transmission rod to drive the fan to rotate to quickly cool the battery. When heat dissipation is not needed, the push plate is pushed out from the L-shaped groove, and the gear plate is connected to the gear rotating rod by the squeezed third spring. Then the motor rotates in the opposite direction to block the ventilation net through the baffle, and the fan is used to ensure rapid heat dissipation of the battery to avoid spontaneous combustion caused by high temperature, thereby ensuring the working efficiency of the battery.

[0026] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0027] The technical solution of the present application is to place the battery inside the placement box, insert it vertically to squeeze the limit plate, and the limit plate is squeezed to squeeze the second spring. The second spring is squeezed to ensure that the battery is fixed, and then the connecting plate on the fixed cover is inserted into the installation box to fix the battery. At the same time, the pulling plate is pulled to drive the pulling column and the fixed column to retract outward, and then the first spring is squeezed by the fixed column. When the connecting plate is inserted into the installation box, the fixed slot position on the connecting plate moves to the fixed column position. Release the pulling of the pulling plate, and the squeezed first spring will bounce the fixed column into the inside of the connecting plate to ensure the fixation of the fixed cover and the installation box. Then the box cover is sealed with screws to ensure the protection of the battery. When the battery is used for a long time and the temperature rises, it is necessary to dissipate the heat of the battery. The push plate is pushed out of the L-shaped groove on the box cover. The squeezed third spring will bounce the moving frame and the gear plate through one end of the baffle to the other end to connect with the gear rotating rod, and then the driving motor drives the transmission rod to rotate, and the rotating transmission rod drives the first pulley and the second pulley to rotate, and the rotating second pulley drives the gear The rotating rod rotates, and the rotating gear rotating rod drives the gear plate and the baffle to shrink, exposing the ventilation net, and then pushes the push plate to the rotating L-shaped groove to disconnect the gear plate and the gear rotating rod. The rotating transmission rod drives the fan to rotate to quickly dissipate heat for the battery. When heat dissipation is not needed, the push plate is pushed out of the L-shaped groove, and the gear plate and the gear rotating rod are connected by the squeezed third spring. Then the motor rotates in the opposite direction to block the ventilation net through the baffle, separate the battery to ensure the heat dissipation of the battery, and then ensure the rapid cooling of the battery through the ventilation net to ensure the stability of the battery during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0029] Figure 1 This is a schematic diagram of the overall structure of a lithium battery module assembly structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the overall internal uniformly distributed parts structure of a lithium battery module assembly structure of the present invention;

[0031] Figure 3 A schematic diagram of a connecting plate structure of a lithium battery module assembly structure of the present invention;

[0032] Figure 4 A schematic diagram of a placement box structure of a lithium battery module assembly structure of the present invention;

[0033] Figure 5 A schematic diagram of a limit plate structure of a lithium battery module assembly structure of the present invention;

[0034] Figure 6 This is a schematic diagram of a fixing column structure of a lithium battery module assembly structure of the present invention;

[0035] Figure 7 A schematic diagram of a ventilation network structure of a lithium battery module assembly structure of the present invention;

[0036] Figure 8 A schematic diagram of a motor structure of a lithium battery module assembly structure of the present invention;

[0037] Fig. 9 The present invention is a schematic diagram of a sliding block structure of a lithium battery module assembly structure.

[0038] In the figure: 1. assembly box; 2. box cover; 3. pulling plate; 301. pulling column; 302. first spring; 303. fixing column; 4. fixing cover; 5. connecting plate; 6. installation box; 7. placement box; 701. limiting plate; 702. second spring; 8. motor; 801. first pulley; 802. belt; 803. second pulley; 804. gear rotating rod; 805. gear plate; 806. moving frame; 807. pushing plate; 808. third spring; 809. sliding block; 8010. fan; 8011. transmission rod; 8012. baffle; 9. ventilation net; 10. L-shaped groove. DETAILED DESCRIPTION

[0039] See also Figure 1-9 The present invention provides a technical solution: a lithium battery module assembly structure, including an assembly box 1, a box cover 2 is provided on the upper surface of the assembly box 1, a pulling plate 3 is slidably connected to the lower internal end of the assembly box 1, an installation box 6 is fixedly connected to the lower internal end of the assembly box 1, a fixed cover 4 is provided on the upper surface of the installation box 6, a connecting plate 5 is fixedly connected to the lower surface of the fixed cover 4, a placement box 7 is fixedly connected to the lower internal end of the installation box 6, a ventilation net 9 is opened at the lower internal end of the box cover 2, and a motor 8 is fixedly connected to the upper internal end of the box cover 2.

[0040] When the battery is placed in the placement box 7, the limiting plate 701 is vertically inserted to squeeze the second spring 702. The limiting plate 701 is squeezed to squeeze the second spring 702. The battery is fixed by the squeezing of the second spring 702. Then, the connecting plate 5 on the fixed cover 4 is inserted into the installation box 6 to fix the battery. At the same time, the pulling plate 3 is pulled to drive the pulling column 301 and the fixing column 303 to retract outward. Then, the first spring 302 is squeezed by the fixing column 303. When the connecting plate 5 is inserted into the installation box 6 and the position of the fixing groove on the connecting plate 5 moves to the position of the fixing column 303, the pulling of the pulling plate 3 is released. The first spring 302 is squeezed to bounce the fixing column 303 into the connecting plate 5 to ensure the fixation of the fixing cover 4 and the installation box 6. Then, the box cover 2 is sealed with screws to ensure the protection of the battery. When the battery is used for a long time and the temperature rises, the battery needs to be cooled. The pushing plate 807 is pushed out of the L-shaped groove 10 on the box cover 2. The third spring 808 is pressed to bounce the moving frame 806 and the gear plate 805 from one end of the baffle 8012 to the other end to connect with the gear rotating rod 804, and then the driving motor 8 drives the transmission rod 8011 to rotate, and the rotating transmission rod 8011 drives the first pulley 801 and the belt 802 and the second pulley 803 to rotate, and the rotating second pulley 803 drives the gear rotating rod 804 to rotate, and the rotating gear rotating rod 804 drives the gear plate 805 and the baffle 8012 to shrink. The ventilation net 9 is exposed, and the push plate 807 is pushed onto the rotating L-shaped groove 10, the gear plate 805 is disconnected from the gear rotating rod 804, and the transmission rod 8011 is rotated to drive the fan 8010 to rotate to quickly dissipate heat from the battery. When heat dissipation is not needed, the push plate 807 is pushed out from the L-shaped groove 10, and the gear plate 805 is connected to the gear rotating rod 804 by being squeezed by the third spring 808, and then the motor 8 rotates in the opposite direction to block the ventilation net 9 through the baffle 8012.

[0041] In the technical solution of the present invention, Figure 4 and Figure 6 As shown, a pulling column 301 is fixedly connected to the left end of the pulling plate 3, a fixing column 303 is fixedly connected to the left end of the pulling column 301, and a first spring 302 is fixedly connected to the right end of the fixing column 303 to ensure quick installation and disassembly of parts.

[0042] In the technical solution of the present invention, Figure 4 and Figure 5 As shown, the lower end of the interior of the placement box 7 is movably connected to a limit plate 701 , and the left end of the surface side of the limit plate 701 is fixedly connected to a second spring 702 to fix the position of the motor 8 .

[0043] In the technical solution of the present invention, Figure 8 and Figure 7 and Fig. 9 As shown, the upper surface end of the motor 8 is fixedly connected with a transmission rod 8011, the lower surface end of the transmission rod 8011 is fixedly connected with a first pulley 801, the upper surface end of the transmission rod 8011 is fixedly connected with a fan 8010, the inner right end of the first pulley 801 is transmission-connected with a belt 802, the inner left end of the belt 802 is transmission-connected with a second pulley 803, the upper surface end of the second pulley 803 is fixedly connected with a gear rotating rod 804, the right end of the surface side of the gear rotating rod 804 is meshingly connected with a gear plate 805, the upper surface end of the gear plate 805 is slidably connected with a moving frame 806, the upper surface end of the moving frame 806 is slidably connected with a push plate 807, the right end of the surface side of the moving frame 806 is fixedly connected with a third spring 808, the lower surface end of the moving frame 806 is fixedly connected with a sliding block 809, and the right surface end of the gear plate 805 is fixedly connected with a baffle 8012, so as to ensure cooling of the high-temperature battery and then seal the ventilation net 9.

[0044] In the technical solution of the present invention, Figure 1 As shown, an L-shaped groove 10 is provided at the inner upper end of the box cover 2 to limit the parts.

[0045] In the technical solution of the present invention, Figure 8 As shown, a sliding plate is fixedly connected to the upper end of the surface of the gear plate 805, and a sliding groove is provided at the lower end of the interior of the moving frame 806 to enhance the usability of the parts.

[0046] In the technical solution of the present invention, Fig. 9 As shown, a sliding groove is provided at the inner right end of the baffle 8012 to facilitate the movement of parts.

[0047] In the technical solution of the present invention, Figure 3 As shown, two sets of fixing grooves are provided at the inner lower end of the connecting plate 5 to ensure the overall fixed connection and facilitate disassembly and installation.

[0048] In the technical solution of the present invention, Figure 8 As shown, a sliding groove is provided at the inner upper end of the moving frame 806, and the size of the sliding groove matches the size of the pushing plate 807, so as to facilitate the movement of the parts and avoid shaking during the movement.

[0049] The embodiment of the present application provides a lithium battery module assembly method: S1: Place the battery inside the placement box 7, insert the limit plate 701 vertically to squeeze the limit plate 701, the limit plate 701 is squeezed to squeeze the second spring 702, and the second spring 702 is squeezed to ensure that the battery is fixed, and then the connecting plate 5 on the fixed cover 4 is inserted into the installation box 6 to fix the battery, and at the same time, the pulling plate 3 is pulled to drive the pulling column 301 and the fixing column 303 to shrink outward, and then the first spring 302 is squeezed by the fixing column 303. When the connecting plate 5 is inserted into the installation box 6, the position of the fixing groove on the connecting plate 5 moves to the position of the fixing column 303. Release the pulling of the pulling plate 3, and the squeezed first spring 302 will bounce the fixing column 303 into the inside of the connecting plate 5 to ensure the fixation of the fixing cover 4 and the installation box 6. Then the box cover 2 uses screws to seal the assembly box 1 to ensure the protection of the battery and quickly fix the battery. Then, by isolating the battery, it is ensured that the heat of the battery is quickly dissipated.

[0050] The embodiment of the present application provides a lithium battery module assembly method: S2: When the battery is used for a long time and the temperature rises, the battery needs to be cooled, and the push plate 807 is pushed out of the L-shaped groove 10 on the box cover 2. The third spring 808 is squeezed to bounce the moving frame 806 and the gear plate 805 from one end to the other end through the baffle 8012 to connect with the gear rotating rod 804, and then the driving motor 8 drives the transmission rod 8011 to rotate, and the rotating transmission rod 8011 drives the first pulley 801 and the belt 802 and the second pulley 803 to rotate, and the rotating second pulley 803 drives the gear rotating rod 804 to rotate, and the rotating gear rotating rod 804 drives the gear The wheel plate 805 and the baffle 8012 are retracted to expose the ventilation net 9, and the push plate 807 is pushed onto the rotating L-shaped groove 10, the gear plate 805 and the gear rotating rod 804 are disconnected, and the rotating transmission rod 8011 drives the fan 8010 to rotate to quickly dissipate heat from the battery. When heat dissipation is not needed, the push plate 807 is pushed out from the L-shaped groove 10, and the gear plate 805 and the gear rotating rod 804 are connected by the squeezed third spring 808, and then the motor 8 rotates in the opposite direction to block the ventilation net 9 through the baffle 8012, and the fan 8010 is used to ensure rapid heat dissipation of the battery to avoid spontaneous combustion caused by high temperature, thereby ensuring the working efficiency of the battery.

[0051] When the battery is in use, the battery is placed in the placement box 7 and inserted vertically to squeeze the limit plate 701. The limit plate 701 is squeezed to squeeze the second spring 702. The second spring 702 is squeezed to ensure that the battery is fixed. Then the connecting plate 5 on the fixing cover 4 is inserted into the installation box 6 to fix the battery. At the same time, the pulling plate 3 is pulled to drive the pulling column 301 and the fixing column 303 to retract outward. Then the first spring 302 is squeezed by the fixing column 303. When the connecting plate 5 is inserted into the installation box 6 and the position of the fixing groove on the connecting plate 5 moves to the position of the fixing column 303, the pulling of the pulling plate 3 is released. The first spring 302 is squeezed to bounce the fixing column 303 into the inside of the connecting plate 5 to ensure the fixation of the fixing cover 4 and the installation box 6. Then the box cover 2 is sealed with screws to ensure the protection of the battery. When the battery is used for a long time and the temperature rises, the battery needs to be cooled. The pushing plate 807 is pushed out of the L-shaped groove 10 on the box cover 2. The spring 808 bounces the moving frame 806 and the gear plate 805 through one end of the baffle 8012 to the other end to connect with the gear rotating rod 804, and then drives the motor 8 to drive the transmission rod 8011 to rotate, and the rotating transmission rod 8011 drives the first pulley 801 and the belt 802 and the second pulley 803 to rotate, and the rotating second pulley 803 drives the gear rotating rod 804 to rotate, and the rotating gear rotating rod 804 drives the gear plate 805 and the baffle 8012 to contract, so that the passage The wind net 9 is exposed, and the pushing plate 807 is pushed onto the rotating L-shaped groove 10, the gear plate 805 is disconnected from the gear rotating rod 804, and the rotating transmission rod 8011 drives the fan 8010 to rotate to quickly dissipate heat from the battery. When heat dissipation is not needed, the pushing plate 807 is pushed out from the L-shaped groove 10, and the gear plate 805 is connected to the gear rotating rod 804 through the compression of the third spring 808, and then the motor 8 rotates in the opposite direction to block the ventilation net 9 through the baffle 8012.

Claims

1. A lithium battery module assembly structure, characterized in that: The utility model comprises an assembly box (1), wherein a box cover (2) is arranged on the upper surface of the assembly box (1), a pulling plate (3) is slidably connected to the lower internal end of the assembly box (1), an installation box (6) is fixedly connected to the lower internal end of the assembly box (1), a fixed cover (4) is arranged on the upper surface of the installation box (6), a connecting plate (5) is fixedly connected to the lower surface of the fixed cover (4), a placement box (7) is fixedly connected to the lower internal end of the installation box (6), a ventilation net (9) is provided at the lower internal end of the box cover (2), and a motor (8) is fixedly connected to the upper internal end of the box cover (2).

2. A lithium battery module assembly structure according to claim 1, characterized in that: The left end of the pulling plate (3) is fixedly connected to a pulling column (301), the left end of the pulling column (301) is fixedly connected to a fixing column (303), and the right end of the fixing column (303) is fixedly connected to a first spring (302).

3. A lithium battery module assembly structure according to claim 1, characterized in that: The lower inner end of the placement box (7) is movably connected to a limiting plate (701), and the left end of the surface side of the limiting plate (701) is fixedly connected to a second spring (702).

4. A lithium battery module assembly structure according to claim 1, characterized in that: The upper surface of the motor (8) is fixedly connected to a transmission rod (8011), the lower surface of the transmission rod (8011) is fixedly connected to a first pulley (801), the upper surface of the transmission rod (8011) is fixedly connected to a fan (8010), the right internal end of the first pulley (801) is transmission-connected to a belt (802), the left internal end of the belt (802) is transmission-connected to a second pulley (803), the upper surface of the second pulley (803) is fixedly connected to a gear rotating rod (8010), and the lower surface of the transmission rod (8011) is fixedly connected to a first pulley (8011). 4), the gear plate (805) is meshingly connected to the right end of the surface side of the gear rotating rod (804), the upper end of the surface of the gear plate (805) is slidably connected to a moving frame (806), the upper end of the surface of the moving frame (806) is slidably connected to a push plate (807), the right end of the surface side of the moving frame (806) is fixedly connected to a third spring (808), the lower end of the surface of the moving frame (806) is fixedly connected to a sliding block (809), and the right end of the surface side of the gear plate (805) is fixedly connected to a baffle (8012).

5. A lithium battery module assembly structure according to claim 1, characterized in that: An L-shaped groove (10) is provided at the inner upper end of the box cover (2).

6. A lithium battery module assembly structure according to claim 4, characterized in that: A sliding plate is fixedly connected to the upper end of the surface of the gear plate (805), and a sliding groove is provided at the lower end inside the moving frame (806).

7. A lithium battery module assembly structure and method according to claim 4, characterized in that: A sliding groove is provided at the inner right end of the baffle (8012).

8. A lithium battery module assembly structure according to claim 2, characterized in that: Two groups of fixing grooves are formed at the inner lower end of the connecting plate (5).

9. A lithium battery module assembly structure and method according to claim 4, characterized in that: A sliding groove is provided at the inner upper end of the movable frame (806), and the size of the sliding groove is adapted to the size of the push plate (807).

10. A lithium battery module assembly method according to any one of claims 1 to 9, characterized in that: The steps include: S1: Place the battery inside the placement box (7), insert it vertically to squeeze the limit plate (701), and the limit plate (701) is squeezed to squeeze the second spring (702). The second spring (702) is squeezed to ensure that the battery is fixed. Then, insert the connecting plate (5) on the fixing cover (4) into the installation box (6) to fix the battery. At the same time, pull the pulling plate (3) to drive the pulling column (301) and the fixing column (303) to retract outward, and then the first spring (302) is squeezed by the fixing column (303). When the connecting plate (5) is inserted into the installation box (6), the fixing groove position on the connecting plate (5) moves to the position of the fixing column (303). When the pulling of the pulling plate (3) is released, the first spring (302) is squeezed to bounce the fixing column (303) into the interior of the connecting plate (5), thereby ensuring the fixing of the fixing cover (4) and the installation box (6). Then, the box cover (2) is screwed to seal the assembly box (1), thereby ensuring the protection of the battery. S2: When the battery is used for a long time and the temperature rises, the battery needs to be cooled. The push plate (807) is pushed out of the L-shaped groove (10) on the box cover (2). The third spring (808) is squeezed to bounce the moving frame (806) and the gear plate (805) from one end to the other end through the baffle (8012) to connect with the gear rotating rod (804). Then the driving motor (8) drives the transmission rod (8011) to rotate. The rotating transmission rod (8011) drives the first pulley (801), the belt (802) and the second pulley (803) to rotate. The rotating second pulley (803) drives the gear rotating rod (804) to rotate. The rotating gear rotates The rod (804) drives the gear plate (805) and the baffle (8012) to retract, exposing the ventilation net (9). The push plate (807) is pushed onto the rotating L-shaped groove (10), the gear plate (805) is disconnected from the gear rotating rod (804), and the rotating transmission rod (8011) drives the fan (8010) to rotate to quickly dissipate heat from the battery. When heat dissipation is no longer needed, the push plate (807) is pushed out from the L-shaped groove (10), and the gear plate (805) is connected to the gear rotating rod (804) by the squeezed third spring (808), and then the motor (8) rotates in the opposite direction to block the ventilation net (9) through the baffle (8012).

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