Hot pressing device for lithium battery production

Abstract

The utility model discloses a lithium battery production hot-pressing device which comprises a placing machine box and a pedestal arranged at the top end of the placing machine box, a hot-pressing seat A is arranged on the middle section of the top end of the pedestal, a hot-pressing seat B is arranged on the upper side of the hot-pressing seat A, and a stamping plate is arranged at the top end of the hot-pressing seat B; u-shaped protective covers are connected to the left end, the right end and the top of the rear end of the placing machine box, and a top seat is connected to the top ends of the U-shaped protective covers, a novel deflagration protective device is additionally arranged at the front end of the lithium battery production hot-pressing device, and the deflagration protective device can be adjusted in a lifting mode; when the lithium battery in hot-pressing processing is deflagrated due to short circuit and the like, only the deflagration protection device needs to be put down to separate a hot-pressing area from an external space to prevent flames generated by deflagration from diffusing outwards, and then the deflagration protection device can be opened only by opening a fire-fighting opening in the deflagration protection device to prevent the lithium battery from being deflagrated. And a fire extinguisher is inserted into the fire-fighting opening to spray a fire extinguishing agent to the deflagration part, so that a deflagration fire source can be quickly extinguished.

Description

Technical Field

[0001] The utility model belongs to the technical field related to hot pressing machines, and in particular relates to a hot pressing device for producing lithium batteries. Background Art

[0002] The hot pressing device in lithium battery production is a device used to press and fix components such as positive and negative electrodes, separators and electrolytes. Its working principle is to tightly combine various material layers in the battery assembly by heating and pressurizing to ensure the performance and safety of the battery. The hot pressing device plays an important role in the lithium battery production line. It can ensure the stability of the battery structure, the tight combination of internal components, and improve the performance and safety of the battery. At the same time, an effective hot pressing process can also improve production efficiency and reduce production costs. It is an indispensable part of the lithium battery production process.

[0003] However, when the hot pressing device in lithium battery production is performing hot pressing processing on lithium batteries, once the heat pressure or temperature is too high, it will easily cause the lithium battery to explode. Explosion means fire, and once a lithium battery catches fire, it will spread rapidly. If the fire source is not extinguished in time, the fire will spread rapidly outward. When a fire occurs, the operator needs to find a fire extinguisher to put out the fire, which will provide time for the fire to spread and is not conducive to rapid fire extinguishing. Utility Model Content

[0004] The purpose of the utility model is to provide a hot pressing device for lithium battery production, so as to solve the problem mentioned in the above background technology that once a fire occurs in a lithium battery, the fire will spread rapidly. If the fire source is not extinguished in time, the fire will spread rapidly outward. When a fire occurs, the operator needs to find a fire extinguisher to put out the fire, which will provide time for the fire to spread and is not conducive to rapid fire extinguishing.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hot pressing device for lithium battery production, comprising a case for placement and a pedestal arranged at the top of the case for placement, a hot pressing seat A is arranged in the middle section of the top of the pedestal, a hot pressing seat B is arranged on the upper side of the hot pressing seat A, a stamping plate is arranged at the top of the hot pressing seat B, a U-shaped protective cover is connected to the left and right ends and the top of the rear end of the case for placement, a top seat is connected to the top of the U-shaped protective cover, and a deflagration protection device is connected to the left and right ends of the opening of the U-shaped protective cover;

[0006] The explosion protection device includes a U-shaped lifting rail, an impact lifting frame, a metal protective plate and a positioning bolt. There are two U-shaped lifting rails, which are respectively fixed at the left and right ends of the opening of the U-shaped protective cover. The bottom of the two U-shaped lifting rails are connected to the impact lifting frame. A metal protective plate is connected between the two U-shaped lifting rails. The metal protective plate can slide up and down between the two U-shaped lifting rails. A positioning bolt is inserted on the lower side of the center of the metal protective plate. A positioning screw hole is provided at the center of the front end of the top seat, and the positioning bolt can be threadedly inserted into the positioning screw hole.

[0007] Preferably, the explosion protection device also includes a sealing cover, a fire outlet and tempered glass. The tempered glass is arranged inside the middle section of the metal protection plate, a fire outlet is arranged at the center of the tempered glass, and a sealing cover is sleeved on the outside of the front end of the fire outlet.

[0008] Preferably, the U-shaped lifting rail, metal protective plate and impact lifting frame are all made of aluminum alloy material. The impact lifting frame is fixedly connected to the U-shaped lifting rail by welding. When the bottom end of the metal protective plate contacts the impact lifting frame, the metal protective plate is completely protected at the front end of the U-shaped protective cover.

[0009] Preferably, the sealing cover can be directly pulled out from the front end of the fire outlet, the tempered glass is fixedly connected to the metal protective plate by flame-retardant and heat-resistant glass glue, and the tempered glass is a multi-layer composite design glass.

[0010] Preferably, lifting guide columns are provided at the top of the base near the four corners, and lifting guide holes are provided inside the stamping plate near the four corners. The top ends of the four lifting guide columns pass through the corresponding lifting guide holes respectively, and the top ends of the four lifting guide columns are fixedly connected to the top base.

[0011] Preferably, the stamping plate and the base are parallel to each other, the hot pressing seat A and the hot pressing seat B are parallel to each other, and the hot pressing seat A and the hot pressing seat B are the same in shape, size and structural composition, and multiple electric heating rods are equidistantly arranged inside the hot pressing seat A and the hot pressing seat B.

[0012] Preferably, a stamping cylinder is arranged at the center of the top end of the top seat, a plunger is arranged inside the stamping cylinder, a stamping shaft is arranged at the bottom end of the plunger, and the bottom end of the stamping shaft passes through the top seat and is fixedly connected to the stamping plate through screws and flanges.

[0013] Preferably, an electric control box is arranged at the right end of the U-shaped protective cover, and placement feet are arranged at the four corners of the bottom of the placement box, and anti-slip pads are arranged at the bottom of the four placement feet.

[0014] Compared with the prior art, the utility model provides a hot pressing device for lithium battery production, which has the following beneficial effects:

[0015] The utility model adds a novel deflagration protection device to the front end of the hot pressing device for lithium battery production, and the deflagration protection device can be raised and lowered. When the deflagration protection device is completely lowered, it will protect the front end of the U-shaped protective cover, so that the hot pressing area will be completely protected, so that the hot pressing area is separated from the external space. When the lithium battery in the hot pressing process deflagrates due to short circuit or the like, at this time, it is only necessary to lower the deflagration protection device to block the hot pressing area from the external space and prevent the flame generated by the deflagration from spreading outward. Then, it is only necessary to open the fire outlet on the deflagration protection device, insert the fire extinguisher into the fire outlet, and spray the fire extinguishing agent on the deflagration area. In this way, the source of the deflagration fire can be quickly extinguished, and when a fire occurs, it can also effectively block the spread of the fire, thereby buying time for firefighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the overall three-dimensional structure of a hot pressing device for lithium battery production.

[0017] Figure 2 It is a partial three-dimensional structural schematic diagram of a hot pressing device for lithium battery production according to the utility model.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the deflagration protection device of the utility model.

[0019] In the figure: 1. Place the feet; 2. Place the chassis; 3. Base; 4. Hot pressing seat A; 5. Hot pressing seat B; 6. Stamping plate; 7. Deflagration protection device; 8. Stamping cylinder; 9. Top seat; 10. U-shaped protective cover; 11. Electric control box; 12. Lifting guide column; 13. Lifting guide hole; 14. Stamping shaft; 15. U-shaped lifting rail; 16. Impact lifting frame; 17. Metal protective plate; 18. Positioning bolts; 19. Sealing cover; 20. Fire outlet; 21. Tempered glass. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides Figure 1-3A hot pressing device for lithium battery production shown in the figure comprises a mounting case 2 and a pedestal 3 arranged at the top of the mounting case 2, a hot pressing seat A4 is arranged in the middle section of the top of the pedestal 3, a hot pressing seat B5 is arranged on the upper side of the hot pressing seat A4, a stamping plate 6 is arranged on the top of the hot pressing seat B5, U-shaped protective covers 10 are connected to the left and right ends and the top of the rear end of the mounting case 2, a top seat 9 is connected to the top of the U-shaped protective cover 10, an electric control box 11 is arranged at the right end of the U-shaped protective cover 10, mounting feet 1 are arranged at the four corners of the bottom of the mounting case 2, and anti-slip pads are arranged at the bottom of the four mounting feet 1. There are lifting guide pillars 12 at the top of the seat 3 near the four corners, and lifting guide holes 13 are set inside the stamping plate 6 near the four corners. The tops of the four lifting guide pillars 12 pass through the corresponding lifting guide holes 13 respectively, and the tops of the four lifting guide pillars 12 are fixedly connected to the top seat 9. The stamping plate 6 and the seat 3 are parallel to each other, and the hot pressing seat A4 and the hot pressing seat B5 are parallel to each other. The shape, size and structural composition of the hot pressing seat A4 and the hot pressing seat B5 are the same. Multiple electric heating rods are equidistantly arranged inside the hot pressing seat A4 and the hot pressing seat B5. A top center of the top seat 9 is set There is a stamping cylinder 8, a plunger is arranged inside the stamping cylinder 8, a stamping shaft 14 is arranged at the bottom end of the plunger, the bottom end of the stamping shaft 14 passes through the top seat 9 and is fixedly connected to the stamping plate 6 by screws and flanges. When the lithium battery is used to produce a hot pressing device, it is first necessary to use a pipeline to connect the stamping cylinder 8 to the pressure supply mechanism placed inside the chassis 2, so that the pressure supply mechanism can directly increase and relieve the pressure of the stamping cylinder 8, and then connect the electric control box 11 to the electric heating rods in the hot pressing seat A4 and the hot pressing seat B5 through wires, and then place the lithium battery that needs to be hot pressed on the hot pressing seat A4, and start the pressure supply mechanism to increase the pressure inside the stamping cylinder 8, the boosting cylinder pushes the stamping shaft 14 downward through the plunger, and the stamping shaft 14 pushes the stamping plate 6 downward, finally making the hot pressing seat B5 pressed on the top of the lithium battery, thereby completing the hot pressing operation, and during the hot pressing process, the electrical control box 11 can flexibly adjust the electric heating temperature of the electric heating rod according to the hot pressing requirements of the lithium battery, so that the hot pressing temperature of the hot pressing seat A4 and the hot pressing seat B5 can be accurately controlled, so that the lithium battery production hot pressing device can meet the hot pressing processing requirements of lithium batteries of various specifications.

[0022] like Figure 1 and Figure 3As shown, the left and right ends of the opening of the U-shaped protective cover 10 are connected with a deflagration protection device 7, which includes a U-shaped lifting rail 15, an impact lifting frame 16, a metal protection plate 17 and a positioning bolt 18. Two U-shaped lifting rails 15 are provided, and the two U-shaped lifting rails 15 are respectively fixed at the left and right ends of the opening of the U-shaped protective cover 10. The bottom of the two U-shaped lifting rails 15 is connected with an impact lifting frame 16. A metal protection plate 17 is connected between the two U-shaped lifting rails 15. The metal protection plate 17 can slide up and down between the two U-shaped lifting rails 15. A positioning bolt 18 is inserted at the lower side of the center of the metal protection plate 17. The center of the front end of the top seat 9 is provided There is a positioning screw hole, and the positioning bolt 18 can be threadedly inserted into the positioning screw hole. The explosion protection device 7 also includes a sealing cover 19, a fire outlet 20 and a tempered glass 21. The tempered glass 21 is arranged inside the middle section of the metal protection plate 17, and the fire outlet 20 is arranged at the center of the tempered glass 21. The sealing cover 19 is sleeved on the outside of the front end of the fire outlet 20. The U-shaped lifting rail 15, the metal protection plate 17 and the impact lifting frame 16 are all made of aluminum alloy material. The impact lifting frame 16 is fixedly connected to the U-shaped lifting rail 15 by welding. When the bottom end of the metal protection plate 17 contacts the impact lifting frame 16, the metal protection plate 17 is completely protected at the front end of the U-shaped protective cover 10.

[0023] like Figure 1 and Figure 3 As shown, the sealing cover 19 can be directly pulled out from the front end of the fire outlet 20, and the tempered glass 21 is fixedly connected to the metal protective plate 17 by flame-retardant and heat-resistant glass glue, and the tempered glass 21 is a multi-layer composite design glass. When the hot-pressed lithium battery explodes due to process errors or short circuits, the exploded lithium battery will catch fire and the flame may spread rapidly. In order to prevent the fire from further expanding outward, the explosion protection device 7 is required to prevent the fire from expanding and assist the fire extinguisher to quickly extinguish the fire. Specifically, the positioning bolt 18 needs to be rotated so that the screw of the positioning bolt 18 is disengaged from the positioning screw hole inside the front end of the top seat 9, and then the positioning bolt 18 is directly loosened. At this time, the metal protective plate 17 will fall rapidly by its own weight. The bottom end of the metal protective plate 17 is blocked by the impact lifting frame 16. At this time, the metal protective plate 17 is completely protected at the front end of the U-shaped protective cover 10, so that a closed space is formed between the metal protective cover and the U-shaped protective cover 10, the chassis 2 and the top seat 9, and the fire is protected inside it. This can prevent the fire from spreading outward and buy time for fire fighting. At the same time, the tempered glass 21 on the metal protective plate 17 can allow the operator to directly observe the fire situation. When the user gets the fire extinguisher in time, he only needs to open the sealing cover 19 on the outside of the front end of the fire outlet 20, and then insert the fire extinguishing head of the fire extinguisher into the fire outlet 20, and turn on the fire extinguisher. At this time, the fire extinguishing agent sprayed from the fire extinguisher will directly act on the fire, thereby quickly extinguishing the fire source.

[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hot pressing device for producing lithium batteries, comprising a mounting case (2) and a pedestal (3) arranged at the top of the mounting case (2), a hot pressing seat A (4) being arranged in the middle section of the top of the pedestal (3), a hot pressing seat B (5) being arranged on the upper side of the hot pressing seat A (4), a stamping plate (6) being arranged at the top of the hot pressing seat B (5), a U-shaped protective cover (10) being connected at the left and right ends and the top of the rear end of the mounting case (2), a top seat (9) being connected at the top of the U-shaped protective cover (10), and characterized in that: The left and right ends of the opening of the U-shaped protective cover (10) are connected to deflagration protection devices (7); The deflagration protection device (7) comprises a U-shaped lifting rail (15), an impact lifting frame (16), a metal protection plate (17) and a positioning bolt (18). Two U-shaped lifting rails (15) are provided. The two U-shaped lifting rails (15) are respectively fixed at the left and right ends of the opening of the U-shaped protective cover (10). The bottoms of the two U-shaped lifting rails (15) are connected with the impact lifting frame (16). A metal protection plate (17) is connected between the two U-shaped lifting rails (15). The metal protection plate (17) can slide up and down between the two U-shaped lifting rails (15). A positioning bolt (18) is inserted at the lower side of the center of the metal protection plate (17). A positioning screw hole is provided at the center of the front end of the top seat (9). The positioning bolt (18) can be threadedly inserted into the positioning screw hole.

2. A hot pressing device for producing lithium batteries according to claim 1, characterized in that: The deflagration protection device (7) further comprises a sealing cover (19), a fire outlet (20) and tempered glass (21); the tempered glass (21) is arranged inside the middle section of the metal protection plate (17); the fire outlet (20) is arranged at the center of the tempered glass (21); and the sealing cover (19) is sleeved on the outside of the front end of the fire outlet (20).

3. A hot pressing device for producing lithium batteries according to claim 1, characterized in that: The U-shaped lifting rail (15), the metal protection plate (17) and the impact lifting frame (16) are all made of aluminum alloy material. The impact lifting frame (16) is fixedly connected to the U-shaped lifting rail (15) by welding. When the bottom end of the metal protection plate (17) contacts the impact lifting frame (16), the metal protection plate (17) is completely protected at the front end of the U-shaped protective cover (10).

4. A hot pressing device for producing lithium batteries according to claim 2, characterized in that: The sealing cover (19) can be directly pulled out from the front end of the fire-fighting opening (20); the tempered glass (21) is fixedly connected to the metal protection plate (17) by means of flame-retardant and heat-resistant glass glue, and the tempered glass (21) is a multi-layer composite design glass.

5. A hot pressing device for producing lithium batteries according to claim 1, characterized in that: The top of the pedestal (3) is provided with lifting guide columns (12) near the four corners, and the inside of the stamping plate (6) is provided with lifting guide holes (13) near the four corners. The tops of the four lifting guide columns (12) pass through the corresponding lifting guide holes (13) respectively, and the tops of the four lifting guide columns (12) are fixedly connected to the top seat (9).

6. A hot pressing device for producing lithium batteries according to claim 1, characterized in that: The stamping plate (6) and the pedestal (3) are parallel to each other, the hot pressing seat A (4) and the hot pressing seat B (5) are parallel to each other, and the hot pressing seat A (4) and the hot pressing seat B (5) are of the same shape, size and structural composition, and a plurality of electric heating rods are evenly spaced inside the hot pressing seat A (4) and the hot pressing seat B (5).

7. A hot pressing device for producing lithium batteries according to claim 1, characterized in that: A stamping cylinder (8) is arranged at the center of the top of the top seat (9), a plunger is arranged inside the stamping cylinder (8), a stamping shaft (14) is arranged at the bottom end of the plunger, and the bottom end of the stamping shaft (14) passes through the top seat (9) and is fixedly connected to the stamping plate (6) by screws and a flange.

8. A hot pressing device for producing lithium batteries according to claim 1, characterized in that: An electric control box (11) is arranged at the right end of the U-shaped protective cover (10), and placement feet (1) are arranged at the four corners of the bottom of the placement box (2), and the bottoms of the four placement feet (1) are all provided with anti-slip pads.

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