Explosion-proof low-temperature lithium battery production equipment

Abstract

The invention discloses explosion-proof low-temperature lithium battery production equipment, and relates to the technical field of shell welding, the explosion-proof low-temperature lithium battery production equipment comprises a bottom plate, first linear guide rail mechanisms are oppositely arranged on the bottom plate, a first moving plate is arranged on the first linear guide rail mechanisms, and a reversing pedestal device is arranged on the first moving plate; the reversing pedestal device is provided with a vacuum chuck, the vacuum chuck is provided with a battery explosion-proof device, the battery explosion-proof device comprises an explosion-proof outer shell and an explosion-proof inner shell, and the explosion-proof outer shell is connected with the explosion-proof inner shell through four connecting blocks. Four cavities are formed among the anti-explosion outer shell, the anti-explosion inner shell and the four connecting blocks, a partition heat insulation plate is fixedly arranged on the inner side of the anti-explosion inner shell, and a plurality of pressure release valves are embedded in the front side and the rear side of the anti-explosion outer shell. Two protection layers are formed by the explosion-proof outer shell and the explosion-proof inner shell, so that a protection mechanism is formed when the battery unit is out of control, and the shell of the device is prevented from being exploded.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shell welding, in particular to an explosion-proof low-temperature lithium battery production equipment. BACKGROUND

[0002] Lithium battery explosion-proof shell welding is one of the key technologies to ensure the safety and reliability of lithium batteries. Lithium batteries may be affected by factors such as temperature rise and internal short circuit during charging and discharging, resulting in increased internal pressure. If effective measures are not taken, it may cause explosion or fire. Therefore, the design and welding process of the explosion-proof shell become an important link to ensure the safety of lithium batteries. The welding quality of the explosion-proof shell is directly related to the safety of the battery. During the welding process, the heat input, welding speed and welding environment need to be strictly controlled to avoid welding defects, while ensuring the sealing and strength of the weld meet the standards. Through precise welding technology and strict quality control, the safety of lithium batteries can be effectively improved to prevent explosions or fires caused by internal and external pressure changes.

[0003] The invention disclosed in the authorized announcement number CN117921299B relates to an explosion-proof power distribution cabinet shell welding equipment. The invention allows the support plate to drive the shell frame to rotate by ninety degrees through the relevant mechanisms in the rotating group, so that the four end faces around the shell frame can all face the front side, improving the welding efficiency. The steel plate is tightly pressed against the shell frame, allowing the steel plate and the shell frame to be in close contact, facilitating welding operations.

[0004] The above device can achieve welding operation on the shell, but the above device improves welding quality and efficiency by allowing two welding pieces to tightly contact through relevant mechanisms. There is no relevant mechanism for the welding gun, and it cannot perform swing welding on the weld. There is also no relevant mechanism to handle light leakage during laser welding, so a safer and more efficient welding device is needed. SUMMARY

[0005] The present application aims to provide an explosion-proof low-temperature lithium battery production equipment to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: An explosion-proof low-temperature lithium battery production equipment includes a bottom plate, a first linear guide mechanism is arranged on the bottom plate, a first moving plate is arranged on the first linear guide mechanism, a reversing seat device is arranged on the first moving plate, a vacuum chuck is arranged on the reversing seat device, a battery explosion-proof device is arranged on the vacuum chuck, a heat dissipation device is arranged in the battery explosion-proof device, a moving control device is arranged on the right side of the bottom plate, and a welding device is arranged in the moving control device. The heat dissipation device comprises four heat exchange plates and four scattering units, the heat exchange plates are fixedly arranged below the battery unit, the four heat exchange plates are communicated with each other through three connecting pipes, the connecting pipes pass through the partition heat insulation plate, the heat exchange plate is provided with a first liquid inlet pipe which extends to the outside through the explosion-proof outer shell and the explosion-proof inner shell, the first liquid inlet pipe is provided with a liquid inlet valve, the heat exchange plate is provided with a first liquid outlet pipe which extends to the outside through the explosion-proof outer shell and the explosion-proof inner shell, the first liquid outlet pipe is provided with a liquid outlet valve, the scattering unit is fixedly arranged between adjacent connecting blocks, the scattering unit is inclined at an angle matched with the slope of the edge of the second cover plate, the heat exchange plate is communicated with the scattering unit through a second liquid inlet pipe, the second liquid inlet pipe is provided with a one-way valve, the scattering unit is provided with a second liquid outlet pipe, the second liquid outlet pipe is provided with an electromagnetic control valve, and the second liquid outlet pipe is communicated with the first liquid outlet pipe through a converging pipe.

[0007] As a further scheme of the present application: the scattering unit comprises an L-shaped pipe, the L-shaped pipe has an arc-shaped transparent part, the inner wall of the L-shaped pipe is provided with a reflective coating part, and the bottom of the L-shaped pipe is uniformly provided with a plurality of scattering pyramids.

[0008] As a further scheme of the present application: the reversing seat device comprises a base and a first rotating shaft, a reduction motor is arranged above the base, the output shaft of the reduction motor is connected with the first rotating shaft through a worm gear mechanism, an angle sensor is fixedly arranged on the first rotating shaft, a rotating seat is fixedly arranged at the outer end of the first rotating shaft, and a plurality of balls are embedded and installed on the base and in contact with the lower end surface of the rotating seat.

[0009] As a further scheme of the present application: the battery explosion-proof device comprises an explosion-proof outer shell and an explosion-proof inner shell, the explosion-proof outer shell and the explosion-proof inner shell are connected through four connecting blocks, four cavities are formed between the explosion-proof outer shell, the explosion-proof inner shell and the four connecting blocks, a partition heat insulation plate is fixedly arranged in the inner side of the explosion-proof inner shell, a plurality of pressure relief valves are embedded and installed on the front and rear sides of the explosion-proof outer shell and extend into the explosion-proof inner shell, an electrode terminal is arranged on the left side of the explosion-proof outer shell, a battery unit is arranged between the explosion-proof inner shell and the partition heat insulation plate, a first cover plate matched with the explosion-proof inner shell is arranged above the partition heat insulation plate and the battery unit, and a second cover plate matched with the explosion-proof outer shell is arranged above the first cover plate.

[0010] As a further scheme of the present application: a vacuum layer is arranged in the inner side of the partition heat insulation plate.

[0011] As a further scheme of the present application: the mobile control device comprises a support and a second mobile plate, first electric push rods are oppositely arranged between the support and the second mobile plate, a third mobile plate is arranged above the second mobile plate between the two first electric push rods, second electric push rods are respectively arranged above the second mobile plate at the front and rear sides below the third mobile plate, slide rails are oppositely arranged at the lower end surface of the third mobile plate, double-head synchronous cylinders are fixedly arranged on the inner side of the slide rails above the third mobile plate, a plurality of mobile seats are slidably arranged on the slide rails through sliding blocks, end fixed blocks are fixedly arranged at both ends of the lower end surface of the second mobile plate, welding devices are respectively rotatably arranged between the two end fixed blocks through rotating shafts, first rotating seats are fixedly arranged on the mobile seats, second rotating seats matched with the first rotating seats are arranged on the welding devices, stepped grooves matched with the mobile seats are formed in the second mobile plate, and the first rotating seats and the second rotating seats are connected through connecting rods, and the connecting rods pass through the stepped grooves in the second mobile plate.

[0012] As a further scheme of the present application: the support is provided with a second laser positioning sensor, and the first mobile plate is provided with a first laser positioning sensor matched with the second laser positioning sensor.

[0013] As a further scheme of the present application: the welding device comprises a base plate, second linear guide mechanisms are oppositely arranged on the base plate, a fourth mobile plate is arranged on the second linear guide mechanisms, third linear guide mechanisms are oppositely arranged on the fourth mobile plate, a plurality of third electric push rods are arranged on the third linear guide mechanisms, a fifth mobile plate is fixedly arranged on the output shafts of the third electric push rods, a telescopic laser welding gun is hingedly installed on the fifth mobile plate, and a traveling groove matched with the telescopic laser welding gun is formed in the fourth mobile plate.

[0014] As a further scheme of the present application: an inclination sensor is arranged on the base plate between the two second linear guide mechanisms.

[0015] As a further scheme of the present application: overflow valves are respectively arranged at the front and rear sides of the explosion-proof outer shell body and communicate with the chamber, a temperature control sprayer is threadedly installed on the scattering unit, and a heat conduction block matched with the temperature control sprayer is fixedly arranged on the explosion-proof inner shell body.

[0016] Compared with the prior art, the present application has the following advantages: Two layers of protection are formed by the explosion-proof outer shell and the explosion-proof inner shell, a protection mechanism is formed when the battery cell loses control, the device shell is prevented from exploding, and the vacuum layer in the heat insulation plate separates the battery cells, which can not only insulate different battery cells, but also not affect other battery cells when a certain battery cell loses control, and the pressure relief valve directly discharges the gas generated by the battery cell when it loses control, which can effectively reduce the pressure in the device and improve the safety of the device; The battery cells are cooled by the heat exchange plate, and the one-way valve and the electromagnetic control valve cooperate to facilitate the filling of the cooling liquid in the battery cells, thereby enabling efficient and energy-saving welding during welding and improving the welding quality. The laser is guided to the inside of the L-shaped pipeline through the arc-shaped transparent part during laser welding, and the laser is reflected to the bottom of the weld joint under the cooperation of the reflective coating and the scattering pyramids, which not only heats other parts of the weld joint bottom and fully utilizes the heat of the laser, but also processes the already welded part with part of the reflected laser, further improving the welding quality and effectively improving the use efficiency of the device. The first electric push rod adjusts the height of the second moving plate, the second electric push rod adjusts the height of the third moving plate, and the double-head synchronous cylinder adjusts the position of the moving seat, thereby adjusting the inclination angle of the welding device, so that the inclination angles of the two welding devices are deflected at the same angle, facilitating the welding operation of the welding device and improving the application range and use efficiency of the device. The inclination angle of the base plate is monitored by the inclination angle sensor, the second linear guide mechanism adjusts the position of the telescopic laser welding gun on the base plate, the telescopic laser welding gun is swung forward under the cooperation of the traveling groove and the third linear guide mechanism, which facilitates the welding of the second cover plate, and the third electric push rod adjusts the height of the fifth moving plate, so that the height of the articulation between the telescopic laser welding gun and the fifth moving plate is adjusted, the rotation point of the telescopic laser welding gun is adjusted, and the swing amplitude of the telescopic laser welding gun is controlled, thereby adapting to the welding operation of different sizes of welds. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The three-dimensional structure diagram of the present application.

[0018] Figure 2 The front view structure diagram of the present application.

[0019] Figure 3 The explosion diagram of the reversing pedestal device in the present application.

[0020] Figure 4 The three-dimensional structure diagram of the battery explosion-proof device in the present application.

[0021] Figure 5 The cross-sectional three-dimensional structure diagram of the battery explosion-proof device in the present application.

[0022] Figure 6 For the invention Figure 5 A local enlarged structure diagram at A in the invention.

[0023] Figure 7 For the explosion diagram at the battery explosion-proof device in the invention.

[0024] Figure 8 For the three-dimensional structure diagram at the heat dissipation device in the invention.

[0025] Figure 9 For the three-dimensional structure diagram at the mobile control device in the invention.

[0026] Figure 10 For the local three-dimensional structure diagram at the mobile control device in the invention.

[0027] Figure 11 For the local three-dimensional structure diagram at the welding device in the invention.

[0028] Figure 12 For another three-dimensional structure diagram at the battery explosion-proof device in the invention.

[0029] Figure 13 For another three-dimensional structure diagram at the heat dissipation device in the invention.

[0030] Reference signs annotation: 1, bottom plate; 2, first linear guide mechanism; 3, first moving plate; 31, first laser positioning sensor; 4, reversing seat device; 41, base; 42, speed reducer motor; 43, worm gear mechanism; 44, first rotating shaft; 45, angle sensor; 46, rotating seat; 47, ball; 5, vacuum chuck; 6, battery explosion-proof device; 61, explosion-proof outer shell; 62, explosion-proof inner shell; 63, partition heat insulation plate; 631, vacuum layer; 64, connecting block; 65, pressure relief valve; 66, electrode terminal post; 67, battery unit; 68, first cover plate; 69, second cover plate; 610, cavity; 7, heat dissipation device; 71, heat exchange plate; 72, connecting pipe; 73, liquid inlet valve; 74, first liquid inlet pipe; 75, liquid outlet valve; 76, first liquid outlet pipe; 77, scattering unit; 771, arc-shaped transparent part; 772, reflective coating part; 773, scattering cone; 78, second liquid inlet pipe; 79, one-way valve; 710, second liquid outlet pipe; 711, electromagnetic control valve; 712, manifold; 8, movement control device; 81, bracket; 82, second laser positioning sensor; 83, first electric push rod; 84, second moving plate; 85, second electric push rod; 86, third moving plate; 87, slide rail; 88, double-head synchronous cylinder; 89, moving seat; 810, first rotating seat; 811, connecting rod; 812, second rotating seat; 813, end fixed block; 9, welding device; 91, base plate; 92, second linear guide mechanism; 93, inclination sensor; 94, fourth moving plate; 95, travel groove; 96, third linear guide mechanism; 97, third electric push rod; 98, fifth moving plate; 99, telescopic laser welding gun; 10, overflow valve; 11, temperature control sprayer; 12, heat conduction block. DETAILED DESCRIPTION

[0031] The present application will be described in detail below with reference to the drawings. In the drawings or description, similar or identical parts are designated with like reference numerals, and in practical applications, the shapes, thicknesses, or heights of the components can be enlarged or reduced. The embodiments listed in the present application are only used to illustrate the present application, and are not used to limit the scope of the present application. Any obvious modification or change made to the present application does not deviate from the spirit and scope of the present application. EMBODIMENT

[0032] Please refer to Figures 1-11The embodiment of the present application is a kind of low-temperature lithium battery production equipment, including base plate 1, the first linear guide mechanism 2 is oppositely arranged on the base plate 1, the first moving plate 3 is arranged on the first linear guide mechanism 2, the reversing pedestal device 4 is arranged on the first moving plate 3, the vacuum chuck 5 is arranged on the reversing pedestal device 4, the battery explosion-proof device 6 is arranged on the vacuum chuck 5, the heat dissipation device 7 is arranged in the battery explosion-proof device 6, the moving control device 8 is arranged on the right side of the base plate 1, the welding device 9 is oppositely arranged in the moving control device 8.

[0033] The reversing pedestal device 4 includes base 41 and first rotating shaft 44, deceleration motor 42 is arranged above the base 41, the output shaft of deceleration motor 42 and the first rotating shaft 44 are connected through worm gear mechanism 43, angle sensor 45 is fixedly arranged on the first rotating shaft 44, rotating seat 46 is fixedly arranged on the outer end of the first rotating shaft 44, a plurality of ball bearings 47 are uniformly embedded and installed on the base 41, and the ball bearings 47 are in contact with the lower end surface of the rotating seat 46.

[0034] The battery explosion-proof device 6 includes explosion-proof outer shell 61 and explosion-proof inner shell 62, the explosion-proof outer shell 61 and the explosion-proof inner shell 62 are connected through four connecting blocks 64, four cavities 610 are formed between the explosion-proof outer shell 61, the explosion-proof inner shell 62 and the four connecting blocks 64, the explosion-proof inner shell 62 is fixedly provided with a partition heat insulation plate 63 on the inner side, the partition heat insulation plate 63 is provided with a vacuum layer 631 on the inner side, a plurality of pressure relief valves 65 are embedded and installed on the front and rear sides of the explosion-proof outer shell 61 and extend into the explosion-proof inner shell 62, an electrode terminal post 66 is arranged on the left side of the explosion-proof outer shell 61, a battery unit 67 is arranged between the explosion-proof inner shell 62 and the partition heat insulation plate 63, a first cover plate 68 cooperating with the explosion-proof inner shell 62 is arranged above the partition heat insulation plate 63 and the battery unit 67, a second cover plate 69 cooperating with the explosion-proof outer shell 61 is arranged above the first cover plate 68, two layers of protection layers are formed by the explosion-proof outer shell 61 and the explosion-proof inner shell 62, a protection mechanism is formed when the battery unit 67 loses control, explosion of the device shell is avoided, the vacuum layer 631 in the partition heat insulation plate 63 separates each battery unit 67, on the one hand, different battery units 67 can be heat insulated, on the other hand, when a certain battery unit 67 loses control, other battery units 67 are not affected, the pressure relief valve 65 directly discharges the gas generated by the battery unit 67 when losing control, which can effectively reduce the pressure in the device and improve the safety of the device.

[0035] The heat dissipation device 7 comprises four heat exchange plates 71 and four scattering units 77, the heat exchange plates 71 are fixedly arranged below the battery unit 67, the four heat exchange plates 71 are communicated with each other through three connecting pipes 72, and the connecting pipes 72 pass through the partition heat insulation plate 63, the heat exchange plates 71 are provided with first liquid inlet pipes 74, the first liquid inlet pipes 74 extend to the outside through the explosion-proof outer shell 61 and the explosion-proof inner shell 62, the first liquid inlet pipes 74 are provided with liquid inlet valves 73, the heat exchange plates 71 are provided with first liquid outlet pipes 76, the first liquid outlet pipes 76 extend to the outside through the explosion-proof outer shell 61 and the explosion-proof inner shell 62, the first liquid outlet pipes 76 are provided with liquid outlet valves 75, the scattering units 77 are fixedly arranged between the adjacent connecting blocks 64, the scattering units 77 are inclined at an angle matched with the slope of the edge of the second cover plate 69, the heat exchange plates 71 and the scattering units 77 are communicated through second liquid inlet pipes 78, the second liquid inlet pipes 78 are provided with one-way valves 79, the scattering units 77 are provided with second liquid outlet pipes 710, the second liquid outlet pipes 710 are provided with electromagnetic control valves 711, the second liquid outlet pipes 710 and the first liquid outlet pipes 76 are communicated through a collecting pipe 712, the battery unit 67 is cooled through the heat exchange plates 71, the one-way valves 79 and the electromagnetic control valves 711 cooperate, so that the scattering units 77 can be filled with cooling liquid, thereby the welding can be efficiently and energy-savingly carried out, and the welding quality is improved.

[0036] The scattering unit 77 comprises an L-shaped pipe, the L-shaped pipe is provided with an arc-shaped transparent part 771, the inner wall of the L-shaped pipe is provided with a reflective coating part 772, and the bottom of the L-shaped pipe is uniformly provided with a plurality of scattering pyramids 773, the laser during laser welding is guided into the L-shaped pipe through the arc-shaped transparent part 771, and the laser is reflected to the bottom of the weld under the cooperation of the reflective coating part 772 and the plurality of scattering pyramids 773, on the one hand, other parts of the weld bottom are heated, and the laser heat is fully utilized, on the other hand, part of the reflected laser can process the welded part again, further improving the welding quality and effectively improving the use efficiency of the device.

[0037] The mobile control device 8 comprises a bracket 81 and a second mobile plate 84, the bottom of the bracket 81 is provided with a second laser positioning sensor 82, the first mobile plate 3 is provided with a first laser positioning sensor 31 matched with the second laser positioning sensor 82, the first electric push rod 83 is arranged between the bracket 81 and the second mobile plate 84, the third mobile plate 86 is arranged above the second mobile plate 84 between the two first electric push rods 83, the second electric push rod 85 is arranged above the second mobile plate 84 at the front and rear sides below the third mobile plate 86, the slide rail 87 is oppositely arranged at the lower end face of the third mobile plate 86, the double-head synchronous cylinder 88 is fixedly arranged on the inner side of the slide rail 87 and above the third mobile plate 86, the movable seat 89 is slidably arranged on the slide rail 87, the end fixed blocks 813 are fixedly arranged at the both ends of the lower end face of the second mobile plate 84, the welding devices 9 are rotatably arranged between the two end fixed blocks 813 through the rotating shafts, the first rotating seat 810 is fixedly arranged on the movable seat 89, the second rotating seat 812 is arranged on the welding device 9 and matched with the first rotating seat 810, the stepped groove matched with the movable seat 89 is formed in the second mobile plate 84, the first rotating seat 810 and the second rotating seat 812 are connected through the connecting rod 811 and the connecting rod 811 passes through the stepped groove in the second mobile plate 84, the height of the second mobile plate 84 is adjusted through the first electric push rod 83, so that the welding device 9 is convenient for welding the second cover plate 69, the height of the third mobile plate 86 is adjusted through the second electric push rod 85, the position of the movable seat 89 is adjusted through the double-head synchronous cylinder 88, and then the inclination angle of the welding device 9 is adjusted by the resultant force, so that the inclination angles of the two welding devices 9 are deflected at the same angle, the welding device 9 is convenient for welding operation, and the application range and use efficiency of the device are improved.

[0038] The welding device 9 includes a base plate 91, on which a second linear guide mechanism 92 is relatively arranged, and an inclination sensor 93 is arranged on the base plate 91 between the two second linear guide mechanisms 92, and a fourth movable plate 94 is provided on the second linear guide mechanism 92, and a third linear guide mechanism 96 is relatively arranged on the fourth movable plate 94, and a plurality of third electric push rods 97 are provided on the third linear guide mechanism 96, and a fifth movable plate 98 is fixedly provided on the output shaft of the third electric push rod 97, and a telescopic laser welding gun 99 is hingedly mounted on the fifth movable plate 98, and one end of the telescopic laser welding gun 99 has a gas compression telescopic rod (a piston is provided at the connection of the telescopic rod, and a certain pressure air is injected into the internal cavity to facilitate the adjustment of the moving groove on the fourth movable plate 94 at all times). 95 contact), the inner end of the gas compression telescopic rod is embedded with a rolling ball, and the other end is a laser welding gun in the prior art. The fourth movable plate 94 is provided with a travel groove 95 that cooperates with the telescopic laser welding gun 99. The inclination angle of the substrate 91 is monitored by the inclination sensor 93. The second linear guide mechanism 92 adjusts the position of the telescopic laser welding gun 99 on the substrate 91. The telescopic laser welding gun 99 swings forward in cooperation with the travel groove 95 and the third linear guide mechanism 96 to facilitate welding of the second cover plate 69. The third electric push rod 97 adjusts the height of the fifth movable plate 98, so that the height of the hinge between the telescopic laser welding gun 99 and the fifth movable plate 98 can be adjusted, so that the rotation point of the telescopic laser welding gun 99 is adjusted, thereby controlling the swing amplitude of the telescopic laser welding gun 99 to adapt to welding operations of welds of different sizes.

[0039] When the device is in use, the battery explosion-proof device 6 is placed on the vacuum suction cup 5, the first linear guide mechanism 2 is started, and the first movable plate 3 is driven to move toward the mobile control device 8. When the first laser positioning sensor 31 and the second laser positioning sensor 82 communicate, the first linear guide mechanism 2 is closed, the first electric push rod 83 is started, the height of the second movable plate 84 is adjusted, the second electric push rod 85 and the double-head synchronous cylinder 88 are started, the deflection angle of the welding device 9 is adjusted, the inclination sensor 93 monitors the deflection angle of the substrate 91, and then the second linear guide mechanism 92 is started to move the fourth movable plate 94 to the corresponding position, and the third electric push rod 97 is started to adjust the swing of the telescopic laser welding gun 99 range, and then start the third linear guide mechanism 96 to let the telescopic laser welding gun 99 weld the second cover plate 69. During laser welding, it is inevitable that the laser will be injected from the weld. The scattering unit 77 (filled with coolant inside, and an airtightness check will be performed before welding) is used to utilize the injected laser. On the one hand, other parts of the bottom of the weld are heated to fully utilize the laser heat. On the other hand, part of the reflected laser can be used to re-process the welded area. After welding is completed, the first linear guide mechanism 2 is started for reset operation, and then the reduction motor 42 is started to rotate the battery explosion-proof device 6 ninety degrees, and then the above operation is repeated to operate on the remaining welds. Example

[0040] See also Figures 12-13 On the basis of Example 1, the front and rear sides of the explosion-proof outer shell 61 are respectively provided with relief valves 10, and the relief valve 10 is connected to the chamber 610. The scattering unit 77 is threadedly mounted with a temperature-controlled ejector 11 (the temperature-controlled ejector 11 has the same structure as the fire sprinkler nozzle in the prior art, and utilizes the glass to break when the set temperature is reached, so that the coolant in the scattering unit 77 is ejected). The explosion-proof inner shell 62 is fixedly provided with a heat-conducting block 12 that cooperates with the temperature-controlled ejector 11. The heat from the explosion-proof inner shell 62 is transferred to the temperature-controlled ejector 11 through the heat-conducting block 12. When the trigger temperature is reached, the coolant in the scattering unit 77 flows into the chamber 610, thereby facilitating heat dissipation of the explosion-proof inner shell 62.

[0041] When the battery explosion-proof device 6 is in use, if a battery cell 67 goes out of control, the liquid outlet valve 75 is closed, and other safety temperature control cables on the battery cell 67 are linked to the electromagnetic control valve 711 on the corresponding scattering unit 77 to close, so as to facilitate the centralized injection of coolant into the cavity 610 where the corresponding out-of-control battery cell 67 contacts the explosion-proof inner shell 62. At the same time, the out-of-control battery cell 67 transfers heat to the temperature control injector 11 through the heat conductive block 12. When the trigger temperature is reached, the coolant in the scattering unit 77 flows into the cavity 610, thereby achieving the purpose of cooling the out-of-control battery cell 67. This enables the scattering unit 77 to have multiple technical effects and improves the practicality of the device.

[0042] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The presently disclosed embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No feature of the application is to be construed as limiting the scope of the claims to its exact counterpart.

[0043] Furthermore, it should be understood that although the description is made on embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and the skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be combined appropriately to form other embodiments which can be understood by the skilled in the art.

Claims

1. An explosion-proof low-temperature lithium battery production device, comprising a bottom plate (1), characterized in that: A first linear guide mechanism (2) is relatively arranged on the base plate (1), a first movable plate (3) is arranged on the first linear guide mechanism (2), a reversing pedestal device (4) is arranged on the first movable plate (3), a vacuum suction cup (5) is arranged on the reversing pedestal device (4), a battery explosion-proof device (6) is arranged on the vacuum suction cup (5), a heat dissipation device (7) is arranged inside the battery explosion-proof device (6), a mobile control device (8) is arranged on the right side of the base plate (1), and a welding device (9) is relatively arranged inside the mobile control device (8); The heat dissipation device (7) includes four heat exchange plates (71) and four scattering units (77). The heat exchange plates (71) are fixedly arranged below the battery unit (67). The four heat exchange plates (71) are interconnected through three connecting pipes (72), and the connecting pipes (72) pass through the separating heat insulation plate (63). A first liquid inlet pipe (74) is provided on the heat exchange plate (71), and the first liquid inlet pipe (74) passes through the explosion-proof outer shell (61) and the explosion-proof inner shell (62) and extends to the outside. A liquid inlet valve (73) is provided on the first liquid inlet pipe (74). A first liquid outlet pipe (76) is provided on the heat exchange plate (71), and the first liquid outlet pipe (76) passes through the explosion-proof outer shell (61) and the explosion-proof inner shell (62). The shell (62) extends to the outside, a liquid outlet valve (75) is provided on the first liquid outlet pipe (76), the scattering unit (77) is fixedly arranged between adjacent connecting blocks (64), the inclination angle of the scattering unit (77) matches the inclination of the edge of the second cover plate (69), the heat exchange plate (71) is connected to the scattering unit (77) through the second liquid inlet pipe (78), a one-way valve (79) is provided on the second liquid inlet pipe (78), a second liquid outlet pipe (710) is provided on the scattering unit (77), the second liquid outlet pipe (710) is provided with an electromagnetic control valve (711), and the second liquid outlet pipe (710) is connected to the first liquid outlet pipe (76) through the confluence pipe (712).

2. The explosion-proof low-temperature lithium battery production equipment according to claim 1, characterized in that: The scattering unit (77) comprises an L-shaped pipe, the L-shaped pipe having an arc-shaped transparent portion (771), the inner wall of the L-shaped pipe having a reflective coating portion (772), and a plurality of scattering cones (773) evenly arranged at the bottom of the L-shaped pipe.

3. The explosion-proof low-temperature lithium battery production equipment according to claim 2, characterized in that: The reversing seat device (4) includes a base (41) and a first rotating shaft (44). A reduction motor (42) is arranged above the base (41). The output shaft of the reduction motor (42) and the first rotating shaft (44) are connected through a worm gear mechanism (43). An angle sensor (45) is fixedly arranged on the first rotating shaft (44). A rotating seat (46) is fixedly arranged on the outer end of the first rotating shaft (44). A plurality of balls (47) are evenly embedded and installed on the base (41), and the balls (47) are in contact with the lower end surface of the rotating seat (46).

4. The explosion-proof low-temperature lithium battery production equipment according to claim 3, characterized in that: The battery explosion-proof device (6) includes an explosion-proof outer shell (61) and an explosion-proof inner shell (62), and the explosion-proof outer shell (61) is connected to the explosion-proof inner shell (62) through four connecting blocks (64). Four chambers (610) are formed between the explosion-proof outer shell (61), the explosion-proof inner shell (62) and the four connecting blocks (64). A partitioning heat insulation board (63) is fixedly provided on the inner side of the explosion-proof inner shell (62). A plurality of pressure relief valves (65) are embedded and installed on the front and rear sides of the explosion-proof outer shell (61). ) and the pressure relief valve (65) extends into the explosion-proof inner shell (62), an electrode terminal (66) is provided on the left side of the explosion-proof outer shell (61), a battery unit (67) is provided between the explosion-proof inner shell (62) and the separation insulation board (63), a first cover plate (68) matching with the explosion-proof inner shell (62) is provided above the separation insulation board (63) and the battery unit (67), and a second cover plate (69) matching with the explosion-proof outer shell (61) is provided above the first cover plate (68).

5. The explosion-proof low-temperature lithium battery production equipment according to claim 4, characterized in that: A vacuum layer (631) is provided inside the partitioning heat insulation board (63).

6. The explosion-proof low-temperature lithium battery production equipment according to any one of claims 1 to 5, characterized in that: The movement control device (8) includes a bracket (81) and a second moving plate (84), a first electric push rod (83) is relatively arranged between the bracket (81) and the second moving plate (84), a third moving plate (86) is arranged between the two first electric push rods (83) and above the second moving plate (84), and second electric push rods (85) are respectively arranged on the front and rear sides below the third moving plate (86) and above the second moving plate (84), a slide rail (87) is relatively arranged on the lower end surface of the third moving plate (86), a double-head synchronous cylinder (88) is fixedly arranged on the inner side of the slide rail (87) and located on the third moving plate (86), and the slide rail (87) slides through a slider. A plurality of movable seats (89) are provided, and end fixing blocks (813) are fixedly provided at both ends of the lower end surface of the second movable plate (84), and a welding device (9) is respectively provided between the two end fixing blocks (813) via a rotating shaft, a first rotating seat (810) is fixedly provided on the movable seat (89), and a second rotating seat (812) cooperating with the first rotating seat (810) is provided on the welding device (9), and a stepped groove cooperating with the movable seat (89) is provided on the second movable plate (84), and the first rotating seat (810) and the second rotating seat (812) are connected by a connecting rod (811), and the connecting rod (811) passes through the stepped groove on the second movable plate (84).

7. The explosion-proof low-temperature lithium battery production equipment according to claim 6, characterized in that: A second laser positioning sensor (82) is provided at the bottom of the bracket (81), and a first laser positioning sensor (31) cooperating with the second laser positioning sensor (82) is provided on the first movable plate (3).

8. The explosion-proof low-temperature lithium battery production equipment according to claim 7, characterized in that: The welding device (9) includes a base plate (91), a second linear guide mechanism (92) is relatively arranged on the base plate (91), a fourth movable plate (94) is arranged on the second linear guide mechanism (92), a third linear guide mechanism (96) is relatively arranged on the fourth movable plate (94), a plurality of third electric push rods (97) are arranged on the third linear guide mechanism (96), a fifth movable plate (98) is fixedly arranged on the output shaft of the third electric push rod (97), a telescopic laser welding gun (99) is hingedly mounted on the fifth movable plate (98), and a travel groove (95) cooperating with the telescopic laser welding gun (99) is opened on the fourth movable plate (94).

9. The explosion-proof low-temperature lithium battery production equipment according to claim 8, characterized in that: An inclination sensor (93) is provided on the substrate (91) between the two second linear guide rail mechanisms (92).

10. The explosion-proof low-temperature lithium battery production equipment according to claim 9, characterized in that: Overflow valves (10) are respectively provided on the front and rear sides of the explosion-proof outer shell (61), and the overflow valves (10) are in communication with the chamber (610). A temperature-controlled injector (11) is threadedly mounted on the scattering unit (77), and a heat-conducting block (12) cooperating with the temperature-controlled injector (11) is fixedly provided on the explosion-proof inner shell (62).

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