Battery cell preheating device for lithium battery production and processing

Abstract

The invention relates to the technical field of battery cell preheating, and discloses a battery cell preheating device for lithium battery production and processing, the battery cell preheating device comprises a heating box body, electric heating tubes are fixedly connected to the inner walls of the two sides of the heating box body, a mounting frame is slidably connected to a sliding rail, and an inner gear ring is fixedly connected to the inner wall of the side, close to an inlet of the heating box body, of the mounting frame; mounting rings are rotatably connected to the inner walls of the two sides of the mounting frame, a plurality of annularly-distributed mounting rods are rotatably connected to the mounting ring on the side, away from the inner gear ring, of the mounting frame, and a placement frame is fixedly connected to the ends, close to the inner gear ring, of the mounting rods; a mounting ring on one side, close to the inner gear ring, of the mounting frame is rotationally connected with limiting rods corresponding to the mounting rods in number and position, and one end, close to the inner gear ring, of each limiting rod is fixedly connected with a gear meshed with the inner gear ring. And the auxiliary performance of the device on the preheating of the battery cell is improved.

Description

Technical Field

[0001] The invention relates to the technical field of battery cell preheating, and in particular to a battery cell preheating device for lithium battery production and processing. Background Art

[0002] Cell preheating is an important step in the production and processing of battery cells. Its main purpose is to increase the temperature inside and outside the battery cells to give full play to the plasticity and expansion of the material, make the temperature inside and outside the battery cells uniformly distributed, reduce stress concentration during hot pressing, thereby maintaining the stability of the shape and structure of the battery cells, improving the durability of the battery cells, and increasing service life and stability.

[0003] When preheating the battery cells, a preheating furnace is usually used. There are two types of preheating furnaces: orbital type and box type. The basic principle is to heat the chamber through an electric heating tube to keep the temperature in the chamber at the preheating temperature of the battery. Among them, the box type furnace is more important in the preheating of small batches of battery cells due to its small size and easy use.

[0004] In actual use, when preheating the battery cell, the side of the battery cell close to the electric heating tube is always facing the electric heating tube. Since the electric heating tube is a heat source, the temperature of the battery cell facing the electric heating tube is higher than the temperature of the battery cell facing away from the electric heating tube. In this case, it is easy to cause uneven preheating of the battery cell and affect the subsequent hot pressing work of the battery cell. For this reason, we propose a battery cell preheating device for lithium battery production and processing. Summary of the invention

[0005] The purpose of the present invention is to provide a cell preheating device for lithium battery production and processing to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cell preheating device for lithium battery production and processing, comprising a heating box, an entrance is opened on one side of the heating box, a slide rail is fixedly connected to the inner bottom wall of the heating box, electric heating pipes are fixedly connected to the inner walls on both sides of the heating box, a mounting frame is slidably connected to the slide rail, an inner wall of the mounting frame on the side close to the entrance of the heating box is fixedly connected to an inner gear ring, inner walls on both sides of the mounting frame are rotatably connected to mounting rings, a plurality of annularly distributed mounting rods are rotatably connected to the mounting ring on the side of the mounting frame away from the inner gear ring, a placement frame is fixedly connected to one end of the mounting rod close to the inner gear ring, and reinforcement rods are fixedly connected between the two sides of the bottom of the placement frame, and a limiting frame is slidably connected to the side of the placement frame away from the reinforcement rods;

[0007] A limiting rod corresponding to the number and position of the mounting rods is rotatably connected to the mounting ring on the mounting frame close to the inner gear ring, and one end of the limiting rod close to the inner gear ring is fixedly connected to a gear meshing with the inner gear ring, and one end of the limiting rod away from the inner gear ring is slidably connected to a sleeve, and one end of the sleeve away from the limiting rod is slidably connected to a limiting seat, and one end of the limiting seat away from the sleeve is fixedly connected to the side wall of the placement frame.

[0008] Preferably, the bottoms of the reinforcement rods are rotatably connected to counterweight seats, and the bottoms of the two counterweight seats are rotatably connected to a connecting frame via a support.

[0009] Preferably, an installation cavity is provided inside the end of the limit rod away from the gear, a limit opening connected to the installation cavity is provided at the top of the end of the limit rod away from the gear, and a spring is fixedly connected to the inner wall of the installation cavity close to the gear.

[0010] Preferably, the inner top wall of the sleeve is fixedly connected to a limit plate via a bracket, the limit plate is located in the installation cavity and fixedly docked with the spring, the end of the sleeve away from the limit rod is fixedly connected to a hexagonal block, and a turning handle B is fixedly connected to the sleeve.

[0011] Preferably, a groove is provided at one end of the limit seat close to the sleeve, and the sleeve is located in the groove of the limit seat, and an inner wall of the groove of the limit seat is provided with a hexagonal groove engaged with the hexagonal block.

[0012] Preferably, mounting holes are provided at two corners on the top of both sides of the placement rack, the limiting rack is located in the mounting holes and is slidably connected to the placement rack through the mounting holes, and a plurality of battery cells are placed between the placement rack, the reinforcement rod and the limiting rack.

[0013] Preferably, the outer wall of the mounting frame on the side away from the inner gear ring is rotatably connected to a docking joint A, and the docking joint A is fixedly docked with the mounting ring on the same side of the mounting frame, and the outer wall of the mounting frame on the side close to the inner gear ring is rotatably connected to a turning handle A, and the turning handle A is fixedly docked with the mounting ring on the same side of the mounting frame.

[0014] Preferably, the inner wall of the heating box body away from the entrance is rotatably connected to a docking joint B, and the docking joint B is meshed with the docking joint A. The outer wall of the heating box body away from the entrance is fixedly connected to a motor, and the output end of the motor is fixedly docked with the docking joint B.

[0015] Preferably, a base is fixedly connected to the bottom of the heating box, and a control panel is installed on the base. A sealing door is rotatably connected to one side of the heating box close to the entrance.

[0016] Preferably, a handle is fixedly connected to the outer wall of the mounting frame on the side close to the inner gear ring, and a heat insulation pad is wound on the handle.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the process of preheating the battery cell, the present invention turns on the motor to drive the mounting ring to rotate. During the rotation of the mounting ring, the mounting ring rotates together through the mounting rod and the limiting rod. During this process, the internal gear ring in a fixed state drives the gear to rotate, and at this time, the limiting rod rotates, thereby driving the placement rack to rotate. In this case, while the placement rack rotates along the mounting ring, it also rotates itself, avoiding the problem of uneven preheating of the battery cell due to the same side of the battery cell always facing the electric heating tube, and further improving the auxiliary function of the device for preheating the battery cell;

[0019] 2. After the preheating of the battery cell is completed, the mounting frame is pulled out of the heating box. At this time, the handle B is manually pulled to pull the hexagonal block on the sleeve out of the hexagonal groove. At this time, the limit of the placement frame disappears, and the counterweight block is rotated in the deflection direction until the counterweight block drives the placement frame to rotate to a normal state. At this time, the limit frame can be removed from the placement frame, and the battery cell can be taken out, and the subsequent battery cell can be placed, and the new battery cell preheating work can be carried out, which further improves the auxiliary function of the device for taking and re-placing the battery cell;

[0020] 3. In the process of pulling the hexagonal block on the sleeve out of the hexagonal groove on the limit seat, the limit plate will squeeze the spring, and then when the placement frame is rotated to its original position, the handle B is released, and the spring starts to rebound, driving the sleeve to move toward the limit seat, and making the hexagonal block fit on the inner wall of the limit seat. When the battery is preheated, the motor is started to drive the mounting ring to rotate. At this time, the gear continues to cooperate with the inner gear ring to drive the limit rod and the sleeve to rotate, and the sleeve will drive the hexagonal block to rotate. When the angle of the hexagonal block is rotated to align with the angle of the hexagonal groove, the reaction force of the spring will clamp the hexagonal block into the hexagonal groove, completing the clamping and limiting work between the sleeve and the limit seat. At this time, the battery cell preheating work can be carried out normally, which effectively improves the auxiliary function of the device for preheating the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the heating box of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the mounting frame and its connecting components of the present invention;

[0024] Figure 4 This is a schematic diagram of the mounting frame structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the mounting ring structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the placement rack of the present invention;

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the limiting seat of the present invention;

[0028] Figure 8 It is a schematic diagram of the limit rod structure of the present invention;

[0029] Fig. 9 It is a schematic diagram of the cross-sectional structure of the limiting rod and the sleeve of the present invention.

[0030] In the figure: 1. heating box; 11. base; 12. sealing door; 13. slide rail; 14. electric heating tube; 2. mounting frame; 21. inner gear ring; 22. handle; 3. mounting ring; 31. mounting rod; 32. docking joint A; 33. turning handle A; 4. placement frame; 41. reinforcement rod; 42. mounting hole; 43. limit frame; 44. battery cell; 5. counterweight seat; 51. connecting frame; 6. limit rod; 61. mounting cavity; 62. spring; 63. limit opening; 64. gear; 7. sleeve; 71. limit plate; 72. hexagonal block; 73. turning handle B; 8. limit seat; 81. hexagonal groove; 9. docking joint B; 91. motor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-9 The present invention provides a technical solution: a cell preheating device for lithium battery production and processing, comprising a heating box 1, which is the main structure of a box-type heating furnace for preheating the cell, and is provided with a heat-resistant layer inside, which can isolate the high temperature in the heating box 1, so that the temperature in the heating box 1 will not leak out, an entrance is opened on one side of the heating box 1, a slide rail 13 is fixedly connected to the inner bottom wall of the heating box 1, and electric heating pipes 14 are fixedly connected to the inner walls on both sides of the heating box 1, a base 11 is fixedly connected to the bottom of the heating box 1, and a control panel is installed on the base 11, and relevant control elements are arranged in the base 11, and the electrical appliances in the heating box 1 can be controlled by the control panel on the base 11, and a sealing door 12 is rotatably connected to the side of the heating box 1 close to the entrance, and a door handle is provided on the sealing door 12, which can be convenient for staff to open and close the sealing door 12, and the entrance of the heating box 1 can be blocked by the sealing door 12.

[0033] Further, the heating box 1 is placed at a designated position and then powered on. At this time, the sealed door 12 is opened, and the mounting frame 2 with the battery cell 44 is placed at a designated position in the heating box 1. The sealed door 12 is then closed. At this time, the electric heating tube 14 can be controlled by the control panel on the base 11 to generate heat, thereby increasing the temperature in the heating box 1 and maintaining the temperature in the heating box 1 at a predetermined temperature to preheat the battery cell 44.

[0034] Combined with Figure 1 , Figure 3 and Figure 4 As shown, a mounting frame 2 is slidably connected to the slide rail 13, and an inner gear ring 21 is fixedly connected to the inner wall of the mounting frame 2 on one side close to the entrance of the heating box body 1. The inner gear ring 21 is an annular structure with gear blocks on the inner wall. The inner gear ring 21 is in a fixed state, and a handle 22 is fixedly connected to the outer wall of the mounting frame 2 on one side close to the inner gear ring 21, and a heat insulation pad is wound on the handle 22.

[0035] Furthermore, when preheating the battery, the mounting frame 2 is pushed into the heating box 1 along the slide rail 13, and the sealing door 12 is closed to carry out the preheating work. When the preheating work is completed, the sealing door 12 is opened. At this time, the mounting frame 2 is pulled toward the outside of the heating box 1 by holding the handle 22 to carry out the unloading work.

[0036] Combined with Figure 2 , Figure 3 and Figure 5 As shown, the inner walls on both sides of the mounting frame 2 are rotatably connected with mounting rings 3, and the mounting ring 3 on the side of the mounting frame 2 away from the inner gear ring 21 is rotatably connected with a plurality of annularly distributed mounting rods 31, and the outer wall of the mounting frame 2 away from the inner gear ring 21 is rotatably connected with a docking joint A32, and the docking joint A32 is fixedly docked with the mounting ring 3 on the same side of the mounting frame 2, and the outer wall of the mounting frame 2 close to the inner gear ring 21 is rotatably connected with a rotating handle A33, and the rotating handle A33 is fixedly docked with the mounting ring 3 on the same side of the mounting frame 2, and the heating box body 1 is away from the entrance. The inner wall on the side is rotatably connected with a docking joint B9, and the docking joint B9 is meshed with the docking joint A32. Both the docking joint A32 and the docking joint B9 are special-shaped heads, which can quickly complete the docking and undocking work. The outer wall of the heating box 1 on the side away from the entrance is fixedly connected with a motor 91, and the output end of the motor 91 is fixedly docked with the docking joint B9. By manually rotating the handle A33, the placement rack 4 can be driven to rotate through the mounting ring 3, so that the placement rack 4 with the battery cells 44 is rotated to the top, which is convenient for disassembly of the battery cells 44.

[0037] Further, after the mounting frame 2 is pushed into the heating box 1, the mounting frame 2 is pushed to one end of the slide rail 13, and then the docking joint A32 is used to clamp the docking joint B9. When the docking joint A32 and the docking joint B9 are docked, the motor 91 cooperates with the docking joint B9 and the docking joint A32 to drive the mounting ring 3 to rotate. At this time, during the rotation of the mounting ring 3, the placement frame 4 can be driven to rotate along the mounting ring 3 through the mounting rod 31. During the rotation, the placement frame 4 can drive the battery cell 44 to rotate to complete the preheating of the battery cell 44.

[0038] Combined with Figure 5 and Figure 6 As shown, one end of the mounting rod 31 close to the inner gear ring 21 is fixedly connected to the placement rack 4, and reinforcement rods 41 are fixedly connected between the two sides of the bottom of the placement rack 4. The cross-section of the reinforcement rod 41 is "L"-shaped, which can better fix and limit the battery cell 44. Mounting holes 42 are opened at the two corners of the top of both sides of the placement rack 4, and a limiting frame 43 is slidably connected between the mounting holes 42. A number of battery cells 44 are placed between the placement rack 4, the reinforcement rod 41 and the limiting frame 43.

[0039] Furthermore, when preheating the battery cell 44, first pull the limit frame 43 out of the mounting hole 42, then put the battery cell 44 on the reinforcement rod 41, and then insert the limit frame 43 into the mounting hole 42 to complete the limiting work of the battery cell 44, and then the battery cell 44 can be preheated.

[0040] Combined with Figure 5 and Figure 6 As shown, the bottom of the reinforcement rod 41 is rotatably connected to a counterweight seat 5, and a connecting frame 51 is rotatably connected between the bottoms of the two counterweight seats 5 through a support. The counterweight seat 5 has a certain weight. At the same time, the two counterweight seats 5 are limited by the connecting frame 51, so that when the counterweight seats 5 turn, the rotation directions of the two counterweight seats 5 will be consistent.

[0041] Furthermore, after completing the preheating of the battery cells 44, when the placement rack 4 tilts or inverts due to its own rotation, the counterweight seat 5 tilts due to gravity, and the two counterweight seats 5 are tilted in the same direction through the limiting function of the connecting frame 51. At this time, the limiting effect on the placement rack 4 is released. At this time, the counterweight seat 5 drives the placement rack 4 to rotate through the offset of its own weight until the placement rack 4 rotates to its original position, that is, the counterweight seat 5 is located at the bottom, and the limiting frame 43 is located at the top. At this time, after taking out the limiting frame 43, the battery cell 44 can be taken out.

[0042] Combined with Figure 5 , Figure 7 , Figure 8 and Fig. 9As shown, a limiting rod 6 corresponding to the number and position of the mounting rod 31 is rotatably connected to the mounting ring 3 on the side close to the inner gear ring 21 of the mounting frame 2. Four mounting rods 31 and limiting rods 6 are provided, and are evenly distributed in an annular shape on the mounting ring 3 on the same side. One end of the limiting rod 6 close to the inner gear ring 21 is fixedly connected to a gear 64 meshing with the inner gear ring 21. Since the inner gear ring 21 is in a fixed state, during the rotation of the gear 64 and the limiting rod 6, the gear 64 moves in a circle around the inner gear ring 21, and the gear 64 rotates under the meshing action of the inner gear ring 21, thereby rotating the limiting rod 6 and driving the placement frame at the same time. 4 is rotated, an installation cavity 61 is provided inside the end of the limiting rod 6 away from the gear 64, a limiting opening 63 communicating with the installation cavity 61 is provided on the top of the end of the limiting rod 6 away from the gear 64, a spring 62 is fixedly connected to the inner wall of the installation cavity 61 close to the gear 64, a sleeve 7 is sleeved and slidably connected to the end of the limiting rod 6 away from the inner gear ring 21, the inner top wall of the sleeve 7 is fixedly connected to the limiting plate 71 through a bracket, the limiting plate 71 is located at the end of the inner wall of the sleeve 7 close to the limiting rod 6, the limiting plate 71 is located in the installation cavity 61, and is fixedly docked with the spring 62, and can cooperate with the bracket between the sleeve 7 and the limiting plate 71 through the limiting opening 63, so as to engage with the sleeve The sleeve 7 is limited so that the sleeve 7 cannot rotate on the limit rod 6 alone. At the same time, the sliding direction of the sleeve 7 can be limited to make the sleeve 7 smoother in the sliding process. Through the rebound force of the spring 62, when the sleeve 7 is pulled, the sleeve 7 can be returned to its original position after releasing the hand. The end of the sleeve 7 away from the limit rod 6 is fixedly connected with a hexagonal block 72, and a turning handle B73 is fixedly connected to the sleeve 7. The turning handle B73 is wrapped with a heat insulation pad to avoid the turning handle B73 being in the heating box 1 for a long time, resulting in its surface temperature being too high, making it impossible for the staff to touch the turning handle B73 with their hands. The end of the sleeve 7 away from the limit rod 6 is sleeved with a sliding connection limit The positioning seat 8 and the limiting seat 8 are fixedly connected to the side wall of the placement frame 4 at one end away from the sleeve 7. A groove is provided at the end of the limiting seat 8 close to the sleeve 7, and the sleeve 7 is located in the groove of the limiting seat 8. The inner wall of the groove of the limiting seat 8 is provided with a hexagonal groove 81 which is engaged with the hexagonal block 72. The diameter of the hexagonal groove 81 is slightly larger than the hexagonal block 72, so that when the hexagonal block 72 is located in the hexagonal groove 81, the hexagonal block 72 cooperates with the hexagonal groove 81 to drive the limiting seat 8 to rotate when the sleeve 7 rotates. When the hexagonal block 72 is located outside the hexagonal groove 81, since the diameter of the hexagonal groove 81 is slightly larger than the hexagonal block 72, it is more convenient for the hexagonal block 72 to be engaged into the hexagonal groove 81.

[0043] Furthermore, during the rotation of the mounting ring 3, the limiting rod 6 rotates along with the mounting ring 3. At this time, the gear 64 cooperates with the inner gear ring 21, so that the gear 64 drives the limiting rod 6 to rotate. During the rotation of the limiting rod 6, the sleeve 7 can cooperate with the limiting seat 8 to drive the placement rack 4 to rotate, thereby improving the uniform preheating of the battery cell 44. When the preheating of the battery cell 44 is completed, the sleeve 7 is moved toward the limiting rod 6 by holding the rotating handle B73. At this time, the limiting plate 71 squeezes the spring 62, and the hexagonal block 72 is pulled out of the hexagonal groove 81. At this time, the sleeve 7 can be released. The limit is formed so that the placement frame 4 can rotate along with the inclination of the counterweight seat 5. When the limit frame 43 rotates to the predetermined position, the handle B73 is released. At this time, the spring 62 starts to rebound, and drives the sleeve 7 to move through the limit plate 71, so that the hexagonal block 72 is against the inner wall of the groove of the limit seat 8. When the motor 91 is started, the limit rod 6 continues to rotate during the rotation of the mounting ring 3. During the rotation, the hexagonal block 72 will be aligned with the hexagonal groove 81. At this time, the reaction force of the spring 62 can be used to insert the hexagonal block 72 into the hexagonal groove 81, and the docking work between the sleeve 7 and the limit seat 8 is completed.

[0044] Working principle: Place the heating box 1 at the designated position, then power it on, open the sealing door 12, pull the limit frame 43 out of the mounting hole 42, put the battery cell 44 on the reinforcement rod 41, insert the limit frame 43 into the mounting hole 42, complete the limit work of the battery cell 44, then push the mounting frame 2 into the heating box 1, push the mounting frame 2 to one end of the slide rail 13, and dock the joint A32 with the joint B9 by means of card connection. At this time, the motor 91 is used to connect the joint B 9 cooperates with the docking joint A32 to drive the mounting ring 3 to rotate. At this time, during the rotation of the mounting ring 3, the mounting rod 31 can drive the placement rack 4 to rotate along with the mounting ring 3. During the rotation, the placement rack 4 can drive the battery cell 44 to rotate, and then the sealing door 12 is closed. At this time, the control panel on the base 11 can control the electric heating tube 14 to generate heat, increase the temperature in the heating box 1, and keep the temperature in the heating box 1 at a predetermined temperature, so as to preheat the battery cell 44 and perform the preheating work;

[0045] During the rotation of the mounting ring 3, the limiting rod 6 rotates along with the mounting ring 3. At this time, the gear 64 cooperates with the inner gear ring 21, so that the gear 64 drives the limiting rod 6 to rotate. During the rotation of the limiting rod 6, the placement rack 4 can be driven to rotate, thereby improving the uniformity of preheating of the battery cell 44.

[0046] When the preheating work of the battery cells 44 is completed, when the battery cells 44 are unloaded, if the placement rack 4 is in a tilted state or an inverted state, according to the tilted placement rack 4, the handle B73 corresponding to the position is held, and the sleeve 7 is pulled toward the limit rod 6 by the handle B73. At this time, the limit plate 71 squeezes the spring 62, and the hexagonal block 72 is pulled out from the hexagonal groove 81. At this time, the limiting work of the placement rack 4 can be released, so that the limiting rack 43 can rotate with the counterweight seat 5. When the reinforcement rod 41 on the limiting rack 43 is located at the top, the counterweight seat 5 is tilted due to gravity. Through the limiting of the connecting frame 51, the two counterweight seats 5 are tilted in the same side direction, and the placement rack 4 is driven to rotate until the placement rack 4 rotates to the original position, that is, the counterweight seat 5 is located at the bottom. The battery cell 44 is then taken out of the limiting frame 43, and the limiting frame 43 is located on the upper side. When the limiting frame 43 is taken out, the battery cell 44 can be taken out. When the limiting frame 43 is rotated to the specified direction, the handle B73 is released. At this time, the spring 62 begins to rebound, and the sleeve 7 is driven to move through the limiting plate 71, so that the hexagonal block 72 is against the inner wall of the groove of the limiting seat 8. Then, a new battery cell 44 is placed on the placement rack 4, and the mounting rack 2 is pushed into the heating box 1. When the motor 91 is started, the limiting rod 6 continues to rotate during the rotation of the mounting ring 3. During the rotation, the hexagonal block 72 will be aligned with the hexagonal groove 81. At this time, the hexagonal block 72 can be inserted into the hexagonal groove 81 through the reaction force of the spring 62 to complete the docking of the sleeve 7 and the limiting seat 8. After that, the battery cell 44 can be preheated normally.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cell preheating device for lithium battery production and processing, comprising a heating box (1), an inlet is provided on one side of the heating box (1), a slide rail (13) is fixedly connected to the inner bottom wall of the heating box (1), and electric heating pipes (14) are fixedly connected to the inner walls on both sides of the heating box (1), characterized in that: The slide rail (13) is slidably connected to a mounting frame (2), the inner wall of the mounting frame (2) on one side close to the entrance of the heating box (1) is fixedly connected to an inner gear ring (21), the inner walls on both sides of the mounting frame (2) are rotatably connected to mounting rings (3), the mounting ring (3) on the side of the mounting frame (2) away from the inner gear ring (21) is rotatably connected to a plurality of annularly distributed mounting rods (31), one end of the mounting rod (31) close to the inner gear ring (21) is fixedly connected to a placement frame (4), and reinforcement rods (41) are fixedly connected between the two sides of the bottom of the placement frame (4), and the side of the placement frame (4) away from the reinforcement rod (41) is slidably connected to a limiting frame (43); A mounting ring (3) on the mounting frame (2) close to the inner gear ring (21) is rotatably connected to a limiting rod (6) corresponding in number and position to the mounting rod (31); one end of the limiting rod (6) close to the inner gear ring (21) is fixedly connected to a gear (64) meshing with the inner gear ring (21); one end of the limiting rod (6) away from the inner gear ring (21) is sleeved with a sleeve (7) in sliding connection; one end of the sleeve (7) away from the limiting rod (6) is sleeved with a limiting seat (8) in sliding connection; one end of the limiting seat (8) away from the sleeve (7) is fixedly connected to the side wall of the placement frame (4).

2. The cell preheating device for lithium battery production and processing according to claim 1, characterized in that: The bottoms of the reinforcement rods (41) are rotatably connected to counterweight seats (5), and the bottoms of the two counterweight seats (5) are rotatably connected to a connecting frame (51) via a support.

3. The cell preheating device for lithium battery production and processing according to claim 1, characterized in that: An installation cavity (61) is provided inside the end of the limiting rod (6) away from the gear (64), a limiting opening (63) communicating with the installation cavity (61) is provided at the top of the end of the limiting rod (6) away from the gear (64), and a spring (62) is fixedly connected to the inner wall of the installation cavity (61) on the side close to the gear (64).

4. The cell preheating device for lithium battery production and processing according to claim 3 is characterized in that: The inner top wall of the sleeve (7) is fixedly connected to a limit plate (71) via a bracket; the limit plate (71) is located in the mounting cavity (61) and fixedly docked with the spring (62); one end of the sleeve (7) away from the limit rod (6) is fixedly connected to a hexagonal block (72); and a rotating handle B (73) is fixedly connected to the sleeve (7).

5. The cell preheating device for lithium battery production and processing according to claim 4, characterized in that: The end of the limit seat (8) close to the sleeve (7) is provided with a groove, and the sleeve (7) is located in the groove of the limit seat (8). The inner wall of the groove of the limit seat (8) is provided with a hexagonal groove (81) engaged with the hexagonal block (72).

6. The cell preheating device for lithium battery production and processing according to claim 1, characterized in that: The two corners at the top of both sides of the placement rack (4) are provided with mounting holes (42); the limiting rack (43) is located in the mounting holes (42) and is slidably connected to the placement rack (4) through the mounting holes (42); and a plurality of battery cells (44) are placed between the placement rack (4), the reinforcement rod (41) and the limiting rack (43).

7. The cell preheating device for lithium battery production and processing according to claim 1, characterized in that: The outer wall of the mounting frame (2) on the side away from the inner gear ring (21) is rotatably connected to a docking joint A (32), and the docking joint A (32) is fixedly docked with the mounting ring (3) on the same side of the mounting frame (2); the outer wall of the mounting frame (2) on the side close to the inner gear ring (21) is rotatably connected to a rotating handle A (33), and the rotating handle A (33) is fixedly docked with the mounting ring (3) on the same side of the mounting frame (2).

8. The cell preheating device for lithium battery production and processing according to claim 7, characterized in that: The inner wall of the heating box (1) away from the entrance is rotatably connected to a docking joint B (9), and the docking joint B (9) and the docking joint A (32) are meshed with each other. The outer wall of the heating box (1) away from the entrance is fixedly connected to a motor (91), and the output end of the motor (91) is fixedly docked with the docking joint B (9).

9. The cell preheating device for lithium battery production and processing according to claim 1, characterized in that: The bottom of the heating box (1) is fixedly connected to a base (11), and a control panel is mounted on the base (11); a sealing door (12) is rotatably connected to a side of the heating box (1) close to the entrance.

10. The cell preheating device for lithium battery production and processing according to claim 1, characterized in that: A handle (22) is fixedly connected to the outer wall of the mounting frame (2) on one side close to the inner gear ring (21), and a heat insulation pad is wound around the handle (22).

Images