A pressurized contact preheating tunnel furnace

Abstract

The present invention discloses a pressurized contact preheating tunnel furnace, comprising a step heating device, the step heating device comprising a first frame assembly and a plurality of unpowered roller modules, the plurality of unpowered roller modules are stacked and installed in the first frame assembly in sequence along the vertical direction, the front side of the unpowered roller module is higher than the rear side of the unpowered roller module, the front bottom of each unpowered roller module is provided with an inclination adjustment module, and a plurality of preheating ovens are evenly arranged on each unpowered roller module. The present invention adopts a pressurized contact method to preheat the battery cell, has uniform heating, high production efficiency, convenient maintenance, and is easy to realize automated work.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery production and processing equipment, and in particular to a pressurized contact preheating tunnel furnace. Background Art

[0002] At present, the lithium battery industry at home and abroad has a good development prospect. Lithium-ion batteries have been widely used in portable appliances such as laptops, cameras, and mobile communications due to their unique performance advantages. The large-capacity lithium-ion batteries currently developed have begun to be tried in electric vehicles and are expected to become one of the main power sources for electric vehicles in the 21st century. They will also be used in artificial satellites, aerospace, and energy storage. With the shortage of energy and the pressure of environmental protection in the world, lithium batteries are widely used in the electric vehicle industry, especially the emergence of lithium iron phosphate batteries, which has promoted the development and application of the lithium battery industry. In order to ensure the high quality of lithium batteries, it is necessary to strictly control the production environment of each process in the production of lithium batteries. In the production process of lithium batteries, it is necessary to preheat or dry the bare cells, pole pieces, pole rolls, and cells.

[0003] Existing lithium battery bare cell preheating is achieved through a traditional preheating tunnel furnace. Traditional preheating tunnel furnaces are generally heated by hot air, but hot air heating has defects such as poor heating uniformity, poor temperature control accuracy, long baking cycle and high energy consumption.

[0004] The above defects need to be improved. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a pressurized contact preheating tunnel furnace.

[0006] The technical solution of the present invention is as follows:

[0007] A pressurized contact preheating tunnel furnace, characterized in that it includes a step heating device, the step heating device includes a first frame assembly and a plurality of unpowered roller modules, the plurality of unpowered roller modules are stacked and installed in the first frame assembly in sequence along the vertical direction, the front side of the unpowered roller module is higher than the rear side of the unpowered roller module, an inclination adjustment module is provided at the bottom of the front side of each of the unpowered roller modules, and a plurality of preheating ovens are evenly arranged on each unpowered roller module.

[0008] The present invention according to the above scheme is characterized in that the inclination adjustment module includes a fixed bracket and a screw rod, the fixed bracket is fixed in the second frame assembly, the fixed bracket is provided with a screw hole matching the screw rod, and the screw rod is arranged on the screw hole.

[0009] Furthermore, a rotary valve is provided on the screw rod, and the rotary valve is fixedly connected to the screw rod.

[0010] The present invention according to the above scheme is characterized in that the preheating oven includes a bottom plate and a cover plate, locking modules are provided on both sides of the bottom plate, and the cover plate is fixed to the bottom plate through the locking modules.

[0011] Furthermore, the step heating device is also provided with a blocking module, and the blocking module is evenly arranged below the unpowered roller module to form a plurality of oven preheating stations.

[0012] Furthermore, the blocking module includes a blocking cylinder and a baffle, the baffle is provided with a sensor, the blocking cylinder is fixed in the first frame assembly, and the blocking cylinder drives the baffle to move vertically.

[0013] Furthermore, the step heating device is also provided with a plug-in module group, which is arranged on one side of each of the oven preheating stations. The plug-in module group includes a plug-in cylinder and a plug-in male head. The plug-in cylinder is fixed in the first frame assembly. The plug-in cylinder drives the plug-in male head to move horizontally. A plug-in female head matching the plug-in male head is arranged on the chassis.

[0014] Furthermore, the pressurized contact preheating tunnel furnace further comprises a loading assembly device and a unloading and disassembling device, wherein the loading assembly device is arranged at the front side of the step heating device, and the unloading and disassembling device is arranged at the rear side of the step heating device;

[0015] The feeding assembly device comprises a second frame assembly and a feeding lifting module installed in the second frame assembly, a feeding fixture module arranged above the feeding lifting module, a first horizontal moving module arranged at the rear side of the feeding lifting module, a pressurizing and locking module arranged above the first horizontal moving module, and a feeding cover plate moving module arranged on both sides of the feeding lifting module and the first horizontal moving module, a second horizontal moving module is arranged on the lifting platform of the feeding lifting module, the feeding cover plate moving module drives the cover plate to move horizontally and vertically, the first horizontal moving module and the second horizontal moving module drive the chassis to move horizontally, and a first pressing plate that moves vertically is arranged on the pressurizing and locking module;

[0016] The material unloading and disassembling device includes a third frame assembly and a material unloading lifting module installed in the third frame assembly, a material unloading clamp module arranged above the material unloading lifting module, a third horizontal moving module arranged at the front side of the material unloading lifting module, a pressure relief and unlocking module arranged above the third horizontal moving module, and a material unloading cover plate moving module arranged on both sides of the material unloading lifting module and the third horizontal moving module, a fourth horizontal moving module is arranged on the lifting platform of the material unloading lifting module, the material unloading cover plate moving module drives the cover plate to move horizontally and vertically, the third horizontal moving module and the fourth horizontal moving module drive the chassis to move horizontally, and the pressure relief and unlocking module is provided with a second pressure plate that moves vertically.

[0017] Furthermore, the loading cover plate moving module and the unloading cover plate moving module both include a sixth horizontal moving module and a second vertical moving module, the second vertical moving module is fixed on the sixth horizontal moving platform of the sixth horizontal moving module, the sixth horizontal moving platform drives the second vertical moving module to move horizontally, a positioning column is provided on the top of the second vertical moving platform of the second vertical moving module, and positioning holes matching the positioning columns are provided on both sides of the cover plate.

[0018] Furthermore, the pressurized contact preheating tunnel furnace further includes a loading scheduling device, a unloading scheduling device and an oven reflux device, wherein the loading scheduling device is arranged between the loading assembly device and the step heating device, the unloading scheduling device is arranged between the unloading disassembly device and the step heating device, and the oven reflux device is arranged below the loading assembly device, the loading scheduling device, the step heating device, the unloading scheduling device and the unloading disassembly device;

[0019] The loading scheduling device and the unloading scheduling device are both provided with a fourth frame assembly and a fifth horizontal moving module installed in the fourth frame assembly, and first vertical moving modules arranged on both sides of the fifth horizontal moving module, both sides of the fifth horizontal moving module are fixed on the first vertical moving platform of the first vertical moving module, the first vertical moving platform drives the fifth horizontal moving module to move vertically, and the fifth horizontal moving module drives the preheating oven to move horizontally;

[0020] The oven reflux device is arranged between the loading lifting module and the unloading lifting module, and the oven reflux device drives the preheating oven to move horizontally.

[0021] The beneficial effects of the present invention are:

[0022] 1. The oven reflow device is set to realize the recycling of the preheating oven. The overall structure is simple, easy to realize automatic work, high production efficiency and easy maintenance;

[0023] 2. The preheating oven presses the bare battery cells onto the heating plate through the cover plate, so that the bare battery cells are quickly heated and dried, so as to achieve the effect of fast and uniform preheating;

[0024] 3. The step heating device is equipped with a multi-layer oven step assembly, which can preheat a large number of battery cells at the same time, making the work more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0026] Figure 2 It is a structural schematic diagram of a step heating device according to an embodiment of the present invention;

[0027] Figure 3 It is a front view of a step heating device according to an embodiment of the present invention;

[0028] Figure 4 A cross-sectional view of a step heating device according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of a preheating oven according to an embodiment of the present invention;

[0030] Figure 6 It is a structural schematic diagram of a feeding assembly device according to an embodiment of the present invention;

[0031] Figure 7 It is a front view of a feeding assembly device according to an embodiment of the present invention;

[0032] Figure 8 It is a left side view of a feeding assembly device according to an embodiment of the present invention;

[0033] Fig. 9 This is a structural schematic diagram of a blanking and disassembling device according to an embodiment of the present invention;

[0034] Fig.10 This is a front view of a blanking and disassembling device according to an embodiment of the present invention;

[0035] Fig.11 It is a structural schematic diagram of a material loading scheduling device according to an embodiment of the present invention;

[0036] Fig.12 This is a structural schematic diagram of a tilt adjustment module according to an embodiment of the present invention;

[0037] Fig.13 This is a schematic structural diagram of a blocking module according to an embodiment of the present invention;

[0038] In the figure, 1. Loading assembly device; 2. Loading scheduling device; 3. Step heating device; 4. Unloading scheduling device; 5. Unloading disassembly device; 6. Oven reflow device;

[0039] 11. Second rack assembly; 12. Loading lifting module; 13. Loading fixture module; 14. First horizontal moving module; 15. Pressurized locking module; 16. Loading cover moving module; 121. Second horizontal moving module; 131. Third vertical moving module; 132. Seventh horizontal moving module; 133. Transverse substrate; 151. First pressing plate; 152. Pressing cylinder; 161. Sixth horizontal moving module; 162. Second vertical moving module; 1331. Cell clamping assembly; 1611. Sixth horizontal moving platform; 1621. Second vertical moving platform; 16211. Positioning column;

[0040] 21. fourth frame assembly; 22. fifth horizontal moving module; 23. first vertical moving module; 231. first vertical moving platform;

[0041] 31. First rack assembly; 32. Unpowered roller module; 33. Tilt adjustment module; 34. Preheat oven; 35. Blocking module; 36. Plug-in module; 331. Fixed bracket; 332. Screw rod; 333. Rotary valve; 341. Chassis; 342. Cover plate; 351. Blocking cylinder; 352. Baffle; 361. Plug-in cylinder; 362. Plug-in male head; 3411. Locking module; 3412. Plug-in female head; 3421. Positioning hole;

[0042] 51. The third frame assembly; 52. The unloading lifting module; 53. The unloading fixture module; 54. The third horizontal moving module; 55. The pressure relief unlocking module; 56. The unloading cover moving module; 521. The fourth horizontal moving module; 551. The second pressing plate; 552. The pressure relief cylinder. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0044] like Figure 1 As shown, an embodiment of the present invention provides a pressurized contact preheating tunnel furnace, comprising a loading assembly device 1, a loading scheduling device 2, a step heating device 3, a unloading scheduling device 4, a unloading disassembly device 5 and an oven reflux device 6, the loading scheduling device 2 and the unloading scheduling device 4 are respectively arranged on the front and rear sides of the step heating device 3, the loading assembly device 1 is arranged on the front side of the loading scheduling device 2, the unloading disassembly device 5 is arranged on the rear side of the unloading scheduling device 4, and the oven reflux device 6 is arranged below the loading assembly device 1, the loading scheduling device 2, the step heating device 3, the unloading scheduling device 4 and the unloading disassembly device 5.

[0045] like Figure 2-Figure 5As shown, the step heating device 3 includes a first frame assembly 31 and a plurality of unpowered roller modules 32, the plurality of unpowered roller modules 32 are stacked and installed in the first frame assembly 31 in sequence along the vertical direction, the front side of the unpowered roller module 32 is higher than the rear side of the unpowered roller module 32, the front bottom of each unpowered roller module 32 is provided with an inclination adjustment module 33, and a plurality of preheating ovens 34 are evenly arranged on each unpowered roller module 32. The preheating oven 34 includes a chassis 341 and a cover plate 342, locking modules 3411 are provided on both sides of the chassis 341, and the cover plate 342 is fixed to the chassis 341 through the locking modules 3411.

[0046] like Figure 6-Figure 8 As shown, the feeding assembly device 1 includes a second frame assembly 11 and a feeding lifting module 12 installed in the second frame assembly 11, a feeding fixture module 13 arranged above the feeding lifting module 12, a first horizontal moving module 14 arranged at the rear side of the feeding lifting module 12, a pressurizing locking module 15 arranged above the first horizontal moving module 14, and a feeding cover moving module 16 arranged on both sides of the feeding lifting module 12 and the first horizontal moving module 14. A second horizontal moving module 121 is arranged on the lifting platform of the feeding lifting module 12. The feeding cover moving module 16 drives the cover 342 to move horizontally and vertically. The first horizontal moving module 14 and the second horizontal moving module 121 drive the chassis 341 to move horizontally. The pressurizing locking module 15 is provided with a first pressing plate 151 that moves vertically.

[0047] like Figure 9-10 As shown, the material unloading and disassembling device 5 includes a third frame assembly 51 and a material unloading lifting module 52 installed in the third frame assembly 51, a material unloading clamp module 53 arranged above the material unloading lifting module 52, a third horizontal moving module 54 arranged at the front side of the material unloading lifting module 52, a pressure relief unlocking module 55 arranged above the third horizontal moving module 54, and a material unloading cover plate moving module 56 arranged on both sides of the material unloading lifting module 52 and the third horizontal moving module 54, a fourth horizontal moving module 521 is arranged on the lifting platform of the material unloading lifting module 52, the material unloading cover plate moving module 56 drives the cover plate 342 to move horizontally and vertically, the third horizontal moving module 54 and the fourth horizontal moving module 521 drive the chassis 341 to move horizontally, and the pressure relief unlocking module 55 is provided with a second pressure plate 551 that moves vertically.

[0048] like Fig.11As shown, the loading scheduling device 2 and the unloading scheduling device 4 are both provided with a fourth frame assembly 21 and a fifth horizontal movable module 22 installed in the fourth frame assembly 21, and a first vertical movable module 23 arranged on both sides of the fifth horizontal movable module 22, and both sides of the fifth horizontal movable module 22 are fixed on the first vertical movable platform 231 of the first vertical movable module 23, the first vertical movable platform 231 drives the fifth horizontal movable module 22 to move vertically, and the fifth horizontal movable module 22 drives the preheating oven 34 to move horizontally.

[0049] The oven reflux device 6 is disposed between the loading lifting module 12 and the unloading lifting module 52 , and the oven reflux device 6 drives the preheating oven 34 to move horizontally.

[0050] By adopting the above scheme, the present invention is divided into a loading area, a preheating area and a unloading area. During loading, the battery cells are sent from the loading transmission line to the preheating area through the loading assembly device 1 and the loading scheduling device 2; during preheating, the heating plate of each preheating oven 34 and the cover plate above it pressurize and heat the battery cells, thereby realizing the preheating treatment of the battery cells; during unloading, the battery cells are sent to the unloading transmission line through the unloading disassembly device 5 and the unloading scheduling device 4, and the empty preheating oven 34 is sent back to the loading area through the oven reflux device 6, thereby realizing the circulation of the preheating oven 34; the overall structure is simple, easy to realize automated work, and has high production efficiency.

[0051] In one embodiment of the present invention, a heating plate is disposed in the chassis 341 , and a plurality of battery cell preheating stations for placing battery cells are disposed on the heating plate.

[0052] like Fig.12 As shown, in one embodiment of the present invention, the inclination adjustment module 33 includes a fixed bracket 331 and a screw rod 332. The fixed bracket 331 is fixed in the second frame assembly 11. The fixed bracket 331 is provided with a screw hole matching the screw rod 332, and the screw rod 332 is arranged on the screw hole.

[0053] Furthermore, a rotating valve 333 is provided on the screw rod 332, and the rotating valve 333 is fixedly connected to the screw rod 332. The top of the screw rod 332 contacts the front bottom of the unpowered roller module. By rotating the rotating valve 333, the screw rod moves vertically, thereby achieving the effect of adjusting the inclination of the unpowered roller module 32.

[0054] like Figure 2 , Figure 3 and Fig.13As shown, in one embodiment of the present invention, the step heating device 3 is further provided with a blocking module 35, which is evenly arranged below the unpowered roller module 32 to form a plurality of oven preheating stations. The blocking module 35 includes a blocking cylinder 351 and a baffle 352, on which a sensor is arranged, and the blocking cylinder 351 is fixed in the first frame assembly 31, and the blocking cylinder 351 drives the baffle 352 to move vertically, so as to limit the movement of the preheating oven 34 on the unpowered roller module 32.

[0055] like Figure 3 As shown, in one embodiment of the present invention, the step heating device 3 is further provided with a plug-in module group 36, which is arranged on one side of each oven preheating station. The plug-in module group 36 includes a plug-in cylinder 361 and a plug-in male head 362. The plug-in cylinder 361 is fixed in the first frame assembly 31, and the plug-in cylinder 361 drives the plug-in male head 362 to move horizontally. A plug-in female head 3411 matching the plug-in male head 362 is provided on the chassis 341, which is used to limit the movement of the preheating oven 34 on the unpowered drum module 32.

[0056] like Figure 8 As shown, in one embodiment of the present invention, the loading cover plate moving module 16 and the unloading cover plate moving module 56 both include a sixth horizontal moving module 161 and a second vertical moving module 162, the second vertical moving module 162 is fixed on the sixth horizontal moving platform 1611 of the sixth horizontal moving module 161, the sixth horizontal moving platform 1611 drives the second vertical moving module 162 to move horizontally, a positioning column 1621 is provided on the top of the second vertical moving platform 1621 of the second vertical moving module 162, and positioning holes 3421 matching the positioning columns 16211 are provided on both sides of the cover plate 342.

[0057] like Figure 7 As shown, in one embodiment of the present invention, the pressurized locking module 15 includes a clamping cylinder 152 and a first pressing plate 151. The clamping cylinder 152 is fixed on the second frame assembly 11, and the clamping cylinder 152 drives the first pressing plate 151 to move vertically.

[0058] like Fig.10 As shown, in one embodiment of the present invention, the pressure relief unlocking module 55 includes a pressure relief cylinder 552 and a second pressure plate 551 , the pressure relief cylinder 552 is fixed on the third frame assembly 51 , and the pressure relief cylinder 552 drives the second pressure plate 551 to move vertically.

[0059] like Figure 6As shown, in one embodiment of the present invention, both the loading fixture module 13 and the unloading fixture module 53 include a third vertical moving module 131 and a seventh horizontal moving module 132. The seventh horizontal moving module 132 is fixed on the third vertical moving platform of the third vertical moving module 131. The third vertical moving module 131 drives the third vertical moving platform to move vertically. A transverse substrate 133 is arranged on the seventh horizontal moving module 132. The seventh horizontal moving module 132 drives the transverse substrate 133 to move horizontally. A plurality of battery cell clamping assemblies 1331 are arranged on the lower side of the transverse substrate 133. When loading, the battery cell clamping assembly 1331 of the loading fixture module 13 clamps the battery cell of the loading transmission line and places the battery cell to the battery cell preheating station. When unloading, the battery cell clamping assembly 1331 of the unloading fixture module 53 moves the preheated battery cell from the preset station to the unloading transmission line, thereby realizing automatic loading and unloading.

[0060] Furthermore, the battery cell clamping assembly 1331 includes a bidirectional drive cylinder and a group of battery cell clamping claws. The bidirectional drive cylinder is installed at the lower end of the horizontal base plate 133. The lower end of the bidirectional drive cylinder is provided with relative guide rails on both sides. The bidirectional drive cylinder drives a group of clamping claw base plates to move back and forth relative to each other on the relative guide rails. A vertical clamping cylinder is provided on the inner side of the clamping claw base plate. The vertical clamping cylinder drives a pressure plate to move vertically. The upper end of the battery cell clamping claw is fixed on the outer side of the clamping claw base plate.

[0061] Furthermore, a photosensitive switch is provided below the bidirectional driving cylinder, and the photosensitive switch is used to determine whether the battery cell reaches the clamping position of the battery cell clamping assembly 1331.

[0062] Furthermore, a protective cover is provided on the transverse substrate 133 .

[0063] In one embodiment of the present invention, the first horizontal moving module 14, the second horizontal moving module 121, the third horizontal moving module 54, the fourth horizontal moving module 521 and the fifth horizontal moving module 22 all include a roller conveying assembly and a driving motor, and the driving motor drives the roller conveying assembly to rotate.

[0064] Working principle:

[0065] The preheating oven 34 is placed on the second horizontal movable module 121 (i.e., the loading station) with the loading lifting module 12. After positioning, it is ready for loading. The loading cover movable modules 16 on both sides first lift the cover and move it to the bottom of the pressurized locking module 15. The loading fixture module 13 places the battery cells from the loading transmission line on the chassis 341. After being filled, the chassis 341 moves to the bottom of the pressurized locking module 15 and is located below the cover that has been moved to this position in advance.

[0066] After the chassis 341 is stationary, the locking module 3411 is unlocked, the loading cover plate moving module 16 lowers the cover plate to cover the battery cell, and the pressing cylinder 152 works to press the cover plate against the battery cell. After pressing, the locking module 3411 of the chassis 341 is locked, the cover plate is locked and firmly presses the battery cell, and the pressing cylinder 152 retracts. At this time, the preheating oven 34 filled with battery cells is moved to the loading scheduling device 2 through the first horizontal moving module 14.

[0067] The loading scheduling device 2 sends the preheating oven 34 to the step heating device 3 in an orderly manner through the fifth horizontal moving module 22 and the first vertical moving module 23.

[0068] According to the heating time, production capacity and the needs of the user's factory space, the inclination, length and number of layers of the unpowered roller module on the step heating device 3 are designed to perform step-by-step heating on these fixtures filled with battery cells. When the sensor of the blocking module 35 senses the preheating oven 34 coming in, the blocking cylinder 351 works to block the preheating oven 34, and then the plug-in cylinder 361 of the plug-in module 36 is started, and the plug-in male connector 362 is inserted into the plug-in female connector of the chassis 341 to fix the preheating oven 34.

[0069] After heating is completed, the preheating oven 34 moves to the unloading scheduling module, and the unloading scheduling device 4 connects the preheating oven 34 that has completed heating to the unloading and disassembling device 5 in an orderly manner through the fifth horizontal moving module 22 and the first vertical moving module 23.

[0070] After the preheating oven 34 moves to the unloading and disassembling device 5, the pressure relief cylinder 552 of the pressure relief unlocking module 55 works to press the cover plate downward, the locking module 3411 is unlocked, and the unloading cover plate moving module 56 lifts the cover plate. The chassis 341 moves to the fourth horizontal moving module 521 (i.e., the unloading station) through the third horizontal moving module 54. The unloading fixture module 53 starts to work and unloads the heated battery cells to the unloading transmission line.

[0071] After unloading is completed, the unloading cover plate moving module 56 lifts the upper cover plate into the fourth horizontal moving module 521 (i.e., the unloading station) and places it downward on the unlocked chassis 341 to form a set of unloaded preheating oven 34. The unloading lifting module 52 under the fourth horizontal moving module 521 descends to send the unloaded preheating oven 34 to the oven reflow device 6.

[0072] The unloaded preheating oven 34 is moved to the second horizontal moving module 121 (i.e., the loading station) through the oven reflow device 6, and the lifting platform of the loading lifting module 12 is raised to prepare for loading, and this cycle is repeated.

[0073] The beneficial effects of the present invention are:

[0074] 1. The oven reflow device is set to realize the recycling of the preheating oven. The overall structure is simple, easy to realize automatic work, high production efficiency and easy maintenance;

[0075] 2. The preheating oven presses the bare battery cells onto the heating plate through the cover plate, so that the bare battery cells are quickly heated and dried, so as to achieve the effect of fast and uniform preheating;

[0076] 3. The step heating device is equipped with a multi-layer oven step assembly, which can preheat a large number of battery cells at the same time, making the work more efficient.

[0077] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

[0078] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A pressurized contact preheating tunnel furnace, characterized in that: The step heating device comprises a first frame assembly and a plurality of unpowered roller modules, wherein the plurality of unpowered roller modules are stacked and installed in the first frame assembly in sequence along the vertical direction, wherein the front side of the unpowered roller module is higher than the rear side of the unpowered roller module, and an inclination adjustment module is arranged at the bottom of the front side of each unpowered roller module, and a plurality of preheating ovens are evenly arranged on each unpowered roller module; The preheating oven comprises a bottom plate and a cover plate, locking modules are arranged on both sides of the bottom plate, the cover plate is fixed on the bottom plate through the locking modules, a heating plate is arranged in the bottom plate, and a plurality of battery cell preheating stations for placing battery cells are arranged on the heating plate; The pressurized contact preheating tunnel furnace also includes a loading assembly device and a unloading disassembly device, the loading assembly device is arranged at the front side of the step heating device, and the unloading disassembly device is arranged at the rear side of the step heating device; the loading assembly device includes a second frame assembly and a loading lifting module installed in the second frame assembly, a loading clamp module arranged above the loading lifting module, a first horizontal moving module arranged at the rear side of the loading lifting module, a pressurized locking module arranged above the first horizontal moving module, and a loading cover plate moving module arranged on both sides of the loading lifting module and the first horizontal moving module, a second horizontal moving module is arranged on the lifting platform of the loading lifting module, the loading cover plate moving module drives the cover plate to move horizontally and vertically, the first horizontal moving module and the second horizontal moving module drive the chassis to move horizontally, and a first pressing plate that moves vertically is arranged on the pressurized locking module; The step heating device is provided with a blocking module, which is evenly arranged below the unpowered roller module to form a plurality of oven preheating stations; the blocking module includes a blocking cylinder and a baffle, the baffle is provided with a sensor, the blocking cylinder is fixed in the first frame assembly, and the blocking cylinder drives the baffle to move vertically; The step heating device is also provided with a plug-in module group, which is arranged at one side of each oven preheating station, and the plug-in module group includes a plug-in cylinder and a plug-in male head, the plug-in cylinder is fixed in the first frame assembly, the plug-in cylinder drives the plug-in male head to move horizontally, and the chassis is provided with a plug-in female head matching with the plug-in male head; The material unloading and disassembling device comprises a third frame assembly and a material unloading lifting module installed in the third frame assembly, a material unloading fixture module arranged above the material unloading lifting module, a third horizontal moving module arranged at the front side of the material unloading lifting module, a pressure relief unlocking module arranged above the third horizontal moving module, and a material unloading cover plate moving module arranged on both sides of the material unloading lifting module and the third horizontal moving module, a fourth horizontal moving module is arranged on the lifting platform of the material unloading lifting module, the material unloading cover plate moving module drives the cover plate to move horizontally and vertically, the third horizontal moving module and the fourth horizontal moving module drive the chassis to move horizontally, and a second pressing plate that moves vertically is arranged on the pressure relief unlocking module; The pressure relief unlocking module comprises a pressure relief cylinder and a second pressing plate, wherein the pressure relief cylinder is fixed on the third frame assembly, and the pressure relief cylinder drives the second pressing plate to move vertically; The pressurized contact preheating tunnel furnace also includes a loading scheduling device, a unloading scheduling device and an oven reflow device, wherein the loading scheduling device is arranged between the loading assembly device and the step heating device, the unloading scheduling device is arranged between the unloading disassembly device and the step heating device, and the oven reflow device is arranged below the loading assembly device, the loading scheduling device, the step heating device, the unloading scheduling device and the unloading disassembly device; The loading scheduling device and the unloading scheduling device are both provided with a fourth frame assembly and a fifth horizontal moving module installed in the fourth frame assembly, and first vertical moving modules arranged on both sides of the fifth horizontal moving module, both sides of the fifth horizontal moving module are fixed on the first vertical moving platform of the first vertical moving module, the first vertical moving platform drives the fifth horizontal moving module to move vertically, and the fifth horizontal moving module drives the preheating oven to move horizontally; The oven reflux device is arranged between the loading lifting module and the unloading lifting module, and the oven reflux device drives the preheating oven to move horizontally.

2. The pressurized contact preheating tunnel furnace according to claim 1, characterized in that: The inclination adjustment module comprises a fixed bracket and a screw rod. The fixed bracket is fixed in the second frame assembly. A screw hole matching with the screw rod is arranged on the fixed bracket. The screw rod is arranged on the screw hole.

3. The pressurized contact preheating tunnel furnace according to claim 2, characterized in that: The screw rod is provided with a rotary valve, and the rotary valve is fixedly connected to the screw rod.

4. The pressurized contact preheating tunnel furnace according to claim 3, characterized in that: The loading cover plate moving module and the unloading cover plate moving module both include a sixth horizontal moving module and a second vertical moving module. The second vertical moving module is fixed on the sixth horizontal moving platform of the sixth horizontal moving module. The sixth horizontal moving platform drives the second vertical moving module to move horizontally. A positioning column is arranged on the top of the second vertical moving platform of the second vertical moving module. Positioning holes matching the positioning column are arranged on both sides of the cover plate.

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