Special equipment and method for automatic coating of battery module bottom

Abstract

The present invention discloses a special machine and method for automatic coating of the bottom of a battery module. The special machine and method for automatic coating of the bottom of a battery module include a coating unit and a coating profiling transfer manipulator, wherein the coating profiling transfer manipulator clamps the battery module, and the coating unit includes: a coating unit frame; a peripheral coating component connected to the coating unit frame, wherein the peripheral coating component coats the coating belt along the peripheral bottom of the battery module; and a bottom coating component connected to the coating unit frame, wherein the bottom coating component coats the coating belt along both sides of the bottom of the battery module. The present invention can change the coating process operation mode of the bottom of a power lithium battery module, realize the purpose of "machine replacement" of the coating process, and greatly improve the coating operation efficiency and coating quality.

Description

Technical Field

[0001] The present invention relates to the technical field of battery module packaging, and in particular to a special machine and method for automatically coating the bottom of a battery module. Background Art

[0002] In recent years, the glue filling process of new energy vehicle power lithium battery module, as a new process for soft-pack battery grouping, can greatly improve the thermal conductivity, grouping strength, buffering and shock absorption performance and insulation protection performance of the battery module, thereby greatly improving the stability and reliability of the power battery and the whole vehicle. However, the coating protection measures before the glue filling process need to be reasonably designed. A set of fully functional automatic coating equipment can effectively prevent quality problems such as excess glue overflow, curing flash, and battery cell contamination during glue filling, thereby greatly reducing the post-processing work of glue filling and improving the efficiency and quality of glue filling. In actual work, the coating process basically adopts the form of manual adhesion, which has low work efficiency and strong randomness, resulting in low product consistency. At present, there is a lack of special equipment on the market that can be used for automatic coating of the bottom of power lithium battery modules, so it cannot meet the development needs of the power battery industry.

[0003] As software and hardware technologies such as programmable controllers, servo drives, and flexible manipulators become more mature, intelligent production has penetrated into various industrial fields, including the power lithium battery industry. In particular, the cross-disciplinary integration of new-generation artificial intelligence technology, deep learning technology, and visual inspection technology has greatly promoted the technological upgrade of core unit equipment, thereby promoting the development of coating technology towards automation, intelligence, safety, efficiency, and high precision. Summary of the invention

[0004] The purpose of the present invention is to provide a special machine and method for automatic coating of the bottom of a battery module, which can be used for automatic coating of a square soft-pack power lithium battery module before the glue filling process.

[0005] In order to achieve the above-mentioned object, the special machine equipment for automatic coating of the bottom of the battery module of the present invention comprises a coating unit and a coating profiling transfer manipulator, wherein the coating profiling transfer manipulator clamps the battery module, and the coating unit comprises:

[0006] Covering the unit frame;

[0007] A peripheral covering assembly is connected to the covering unit frame, and the peripheral covering assembly covers the covering tape along the peripheral bottom of the battery module; and

[0008] The bottom surface covering component is connected to the covering unit frame, and the bottom surface covering component covers the covering belt along the bottom sides of the battery module.

[0009] The coated contour transfer robot comprises a mechanical mobile phone frame and a module picking gripper connected to the mechanical mobile phone frame, and the module picking gripper is used to clamp the battery module.

[0010] The module picking gripper comprises a gripper base plate and a clamping mechanism and a lifting mechanism respectively connected to the gripper base plate. The clamping mechanism clamps the battery module, and the lifting mechanism drives the battery module to rise and fall.

[0011] Wherein, the module picking gripper is connected to the mechanical mobile phone holder through a first direction moving component, a second direction moving component and a third direction moving component.

[0012] Wherein, the bottom surface covering component and the surrounding surface covering component respectively include a visual inspection system.

[0013] Among them, the bottom surface covering assembly includes a base and a first bottom surface covering module and a second bottom surface covering module symmetrically connected to the base, there is a distance between the first bottom surface covering module and the second bottom surface covering module, and the first bottom surface covering module and the second bottom surface covering module respectively correspond to the bottom sides of the battery module.

[0014] Wherein, the first bottom surface covering module group and the second bottom surface covering module group are movably connected to the base to adjust the distance.

[0015] Among them, the first bottom surface covering module and the second bottom surface covering module respectively include a bottom surface covering pressing wheel group and a bottom surface cutting piece, the covering contour transfer robot drives the clamped battery module to contour movement, the bottom surface covering pressing wheel group applies the covering tape along the bottom of the clamped battery module, and the bottom surface cutting piece is used to cut the covering tape.

[0016] Among them, the circumferential covering component includes a circumferential covering wheel group and a circumferential surface cutting piece, the coating profiling transfer robot drives the clamped battery module to perform profiling movement, the circumferential covering wheel group applies the coating tape along the circumference of the battery module, and the circumferential surface cutting piece is used to cut the coating tape.

[0017] The method for automatic coating of the bottom of a battery module of the present invention comprises the following steps:

[0018] The coated contour transfer robot grabs the battery module;

[0019] The circumferential coating component coats the circumferential bottom surface of the battery module clamped by the coating contour transfer robot;

[0020] The bottom surface covering component covers both sides of the bottom surface of the battery module clamped by the covering contour transfer robot;

[0021] Among them, the coating contour transfer robot clamps the battery module and contour moves according to the preset coating path, and the peripheral coating component and the bottom coating component contour coat the peripheral surface and bottom surface of the battery module respectively.

[0022] The beneficial effect of the present invention is that the special machine equipment and method for automatic coating of the bottom of the battery module of the present invention can change the operation mode of the coating process at the bottom of the power lithium battery module, achieve the purpose of "machine replacement" in the coating process, and greatly improve the coating operation efficiency and coating quality.

[0023] The special machine equipment for automatic coating of the bottom of the battery module of the present invention integrates servo drive, programmable control, machine vision, industrial robot and other technologies, which ensures the feasibility and advancement of the special machine equipment and can promote significant changes in the battery module bottom coating operation mode.

[0024] The special machine equipment for automatic coating of the bottom of the battery module of the present invention adopts a flexible manipulator and a coating unit to cleverly copy and match, which can realize reliable copy and coating of the bottom surface of the square soft-pack battery module with different contour shapes, and can realize straight surface coating, curved surface coating, circumferential surface coating and bottom surface coating. It has the advantages of no dead angle mounting, small footprint, convenient loading, simple product switching, etc., and can perform real-time online visual inspection of the coating quality of the coating process, effectively solving the thorny common problems existing in the battery module bottom coating process.

[0025] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an embodiment of a special machine for automatic coating of battery modules of the present invention;

[0027] Figure 2 It is a structural schematic diagram of an embodiment of a coating unit of a special machine equipment of the present invention;

[0028] Figure 3 It is a structural schematic diagram of an embodiment of a coating profiling transfer robot of a special machine equipment of the present invention;

[0029] Figure 4 It is a schematic structural diagram of one direction of the working state of the module picking claw of the coated contour transfer manipulator of the special machine equipment of the present invention;

[0030] Figure 5 It is a structural schematic diagram of another direction of the working state of the module picking claw of the coated contour transfer manipulator of the special machine equipment of the present invention;

[0031] Figure 6It is a structural schematic diagram of an embodiment of a bottom surface covering component of a covering unit of a special machine equipment of the present invention;

[0032] Figure 7 It is a schematic structural diagram of one direction of one of the bottom surface covering modules of the bottom surface covering assembly of the covering unit of the special machine equipment of the present invention;

[0033] Figure 8 It is a schematic structural diagram of another direction of one of the bottom surface covering modules of the bottom surface covering assembly of the covering unit of the special machine equipment of the present invention;

[0034] Fig. 9 It is a partial structural schematic diagram of the working state of the bottom surface coating component of the coating unit of the special machine equipment of the present invention;

[0035] Fig.10 A schematic diagram of the bottom surface coating operation of the coating unit of the special machine equipment of the present invention;

[0036] Fig.11 It is a structural schematic diagram of an embodiment of the peripheral coating component of the coating unit of the special machine equipment of the present invention;

[0037] Fig.12 It is a partial structural schematic diagram of the working state of the peripheral coating component of the coating unit of the special machine equipment of the present invention;

[0038] Fig.13 The present invention is a schematic diagram of the peripheral coating operation of the coating unit of the special machine equipment.

[0039] Among them, the reference numerals

[0040] 1 Coating unit

[0041] 11 Covering unit frame

[0042] 12. Protective device for covering the unit

[0043] 13Battery module feeding and discharging module

[0044] 14-week covered assembly

[0045] 15 bottom cover components

[0046] 15a Base

[0047] 15b The first bottom surface covering module

[0048] 15c Second bottom cover module

[0049] 151 bottom cover assembly mounting plate

[0050] 152 Training wheel set 1

[0051] 153 Training Wheel Set 2

[0052] 154 wheel assembly mounting plate

[0053] 155 Scissor push cylinder mounting plate

[0054] 156 Anti-sticking block

[0055] 157 Scissors push cylinder

[0056] 158 Scissors

[0057] 159 follower wheel set

[0058] 160 bottom cover press fit wheel set

[0059] 161 conveyor wheel assembly mounting plate

[0060] 162 conveyor wheel set

[0061] 163 Visual Inspection System

[0062] 164 Visual Inspection System Mounting Plate

[0063] 165 Coated propulsion cylinder

[0064] 166 Coated propulsion cylinder mounting plate

[0065] 167 Disc Type Protective Medium Three-Jaw Chuck

[0066] 168 disc protective medium

[0067] 169 shear cylinder mounting plate

[0068] 170 shear cylinder

[0069] 171 Disc Type Protective Media Three-Jaw Chuck Mounting Assembly

[0070] 2. Coating contour transfer robot

[0071] 21 Mechanical mobile phone holder

[0072] 22X axis travel assembly

[0073] 23Y-axis walking assembly

[0074] 24Z axis lifting assembly

[0075] 25R shaft rotation assembly

[0076] 26 module picking claw

[0077] 261 gripper substrate

[0078] 262 Pick-up gripper clamping plate

[0079] 263 Clamping Linear Guide Assembly

[0080] 264 clamping plate buffer assembly

[0081] 265 Clamping Cylinder

[0082] 266 lifting cylinder

[0083] 267 lifting cylinder connection assembly

[0084] 268 lifting cylinder connection assembly mounting plate

[0085] 269 ​​lifting linear guide assembly

[0086] 3Battery Module

[0087] 4 Covering tape DETAILED DESCRIPTION

[0088] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the claims attached to the present invention.

[0089] The special machine equipment for automatic coating of the bottom of the battery module of the present invention is mainly used for automatic coating of protective media, such as insulating paper, protective film, etc., at the bottom of the square soft-pack power lithium battery module, and then prepares for the glue filling process at the bottom of the battery module in the next step. The present invention adopts a flexible manipulator and a coating unit to cleverly match the shape, which can achieve straight surface coating, curved surface coating, circumferential surface coating, and bottom surface coating. It has the advantages of no dead angle mounting, small space occupation, convenient loading, simple product switching, etc., and can perform real-time online visual inspection of the coating quality of the coating process.

[0090] like Figures 1 to 5 As shown, the special machine equipment for automatic coating of the bottom of the battery module of the present invention includes a coating unit 1 and a coating profiling transfer robot 2. The coating unit 1 and the coating profiling transfer robot 2 are a nested combined structure. The coating profiling transfer robot 2 clamps the battery module 3 and performs profiling movement, and the coating unit 1 coats the circumference and bottom surface of the battery module 3. Among them, the coating unit 1 includes a coating unit frame 11 and a circumference coating component 14 and a bottom coating component 15 respectively connected to the coating unit frame 11. The circumference coating component 14 cooperates with the coating profiling transfer robot 2 to realize automatic coating of the bottom circumference of the battery module 3. The bottom coating component 15 cooperates with the coating profiling transfer robot 2 to realize automatic coating of the bottom bottom surface of the battery module 3, and supports straight surface coating and curved surface coating, and has strong adaptability.

[0091] like Figures 3 to 5As shown, the coated contour transfer manipulator 2 includes a mechanical mobile phone frame 21 and a module picking gripper 26 connected to the mechanical mobile phone frame 21, and the module picking gripper 26 is used to clamp the battery module 3. The module picking gripper 26 is connected to the mechanical mobile phone frame 21 through a first direction moving component, a second direction moving component and a third direction moving component, so that the module picking gripper 26 can move along the first direction, the second direction and the third direction. The module picking gripper 26 includes a gripper base plate 261 and a clamping mechanism and a lifting mechanism respectively connected to the gripper base plate 261. The clamping mechanism clamps the battery module 3, and the lifting mechanism drives the battery module 3 to rise and fall.

[0092] In detail, the coated contour transfer robot 2 also includes an X-axis walking assembly 22, a Y-axis walking assembly 23, a Z-axis lifting assembly 24 and an R-axis rotating assembly 25. The X-axis walking assembly 22 is installed on the top of the robot frame 21; the Y-axis walking assembly 23 is installed on the X-axis walking assembly 22; the Z-axis lifting assembly 24 is installed on the side of the Y-axis walking assembly 23; the R-axis rotating assembly 25 is installed at the bottom of the Z-axis lifting assembly 24; and the module picking assembly 26 is installed on the flange of the R-axis rotating assembly 25. The main body of the mechanical mobile phone holder 21 is welded and assembled with industrial seamless steel pipes, with high structural strength, strong impact resistance, and stable overall operation; the X-axis walking component 22 uses a servo motor to drive the synchronous belt along the semicircular slide rail to realize the feeding movement; the Y-axis walking component 23 uses a servo motor to drive the synchronous belt along the linear guide rail component to realize the feeding movement; the Z-axis lifting component 24 uses a servo motor to drive the integrated linear module to realize the feeding movement; the R-axis rotating component 25 uses a servo motor to drive the gear pair to realize the rotation feeding; the module picking component 26 is realized by double-sided pneumatic clamping and positioning hook pins. At the same time, the module picking component 26 is processed by rubber coating to avoid direct contact between the metal splint and the battery module, avoid mechanical damage such as module scratches, and ensure the safety of the battery module 3 during the coating process.

[0093] The clamping mechanism of the module picking gripper 26 includes a picking gripper clamping plate 262, a clamping linear guide assembly 263, a clamping plate buffer assembly 264, and a clamping cylinder 265. The lifting mechanism includes a lifting cylinder 266, a lifting cylinder connecting assembly 267, a lifting cylinder connecting assembly mounting plate 268, and a lifting linear guide assembly 269. The gripper base plate 261 is used to connect the flange of the R-axis rotating assembly 25; the picking gripper clamping plate 262 is installed on the gripper base plate 261 via the clamping linear guide assembly 263, and is driven by the clamping cylinder 265 to clamp the battery module 3; the lifting cylinder connecting assembly 267 is installed on the gripper mounting base plate 261 via the lifting cylinder connecting assembly mounting plate 268 and the lifting linear guide assembly 269, and is driven by the lifting cylinder 266 to shift the battery module 3 up and down.

[0094] Re-reference Figure 1 and Figure 2 The coating unit 1 also includes a coating unit protection device 12 and a battery module inlet and outlet module 13. The coating unit protection device 12 is installed on the coating unit frame 11 through aluminum profile angle pieces, and the battery module inlet and outlet module 13 is installed on the coating unit frame 11 through square tube welded parts. The main body of the coating unit frame 11 adopts an aluminum profile structure, which is convenient for modular assembly and has a high cost performance. There is a total of one group of peripheral coating components 14 and two groups of bottom coating components 15, which are arranged in parallel; the battery module inlet and outlet module 13 adopts a reciprocating inlet and outlet structure, which keeps the operator away from the coating area and has good operation safety.

[0095] The present invention can realize various types of automatic coating of the bottom straight surface coating, curved surface coating, peripheral surface coating, bottom surface coating, etc. of the battery module 3 by reasonably designing the spatial distribution of a group of peripheral surface coating components 14 and two groups of bottom surface coating components 15 of the coating unit 1, and infinitely approximating the required coating path curve by means of the interpolation motion of the coating profiling transfer manipulator 2 (i.e., the control system determines the entire process of the motion trajectory of the coating profiling transfer manipulator 2 according to a preset program). The special structural design of the present invention has good compatibility with modules of different shapes and sizes.

[0096] In detail, Figures 6 to 10 As shown, the bottom surface covering assembly 15 includes a base 15a and a first bottom surface covering module 15b and a second bottom surface covering module 15c symmetrically connected to the base 15a, and there is a distance d between the first bottom surface covering module 15b and the second bottom surface covering module 15c. The first bottom surface covering module 15a and the second bottom surface covering module 15b correspond to the two sides of the bottom of the battery module 3 respectively, so as to cover the two sides of the bottom of the battery module 3. The first bottom surface covering module 15b and the second bottom surface covering module 15c respectively include a bottom surface covering pressing wheel group 160 and a bottom surface cutting piece, and the bottom surface covering pressing wheel group 160 applies the covering tape 4 along the bottom of the battery module 3 clamped by the covering contour transfer robot 2, and the bottom surface cutting piece is used to cut the covering tape 4. The first bottom surface covering module 15b and the second bottom surface covering module 15c cooperate with the covering profiling transfer robot 2 to realize the automatic covering of the bottom straight surface of the battery module 3. The specific process flow is as follows: the module picking claw 26 of the covering profiling transfer robot 2 first picks up the battery module 3, and then Fig. 9 During the linear motion, the bottom surface coating pressing wheel group 160 applies the coating belt 4 to the bottom surface of the battery module 3 to complete the coating operation on the bottom surface of the battery module 3 (as shown in FIG. Fig.10 shown).

[0097] The first bottom surface covering module 15b and the second bottom surface covering module 15c have symmetrical structures. Figures 6 to 10Taking one of the bottom surface covering modules as an example, in detail, it also includes a bottom surface covering component mounting plate 151, an auxiliary wheel group 1 152, an auxiliary wheel group 2 153, a wheel group mounting plate 154, a scissor propulsion cylinder mounting plate 155, an anti-sticking block 156, a scissor propulsion cylinder 157, a scissors 158, a follower wheel group 159, a conveying wheel group mounting plate 161, a conveying wheel group 162, a visual inspection system 163, a visual inspection system mounting plate 164, a coating propulsion cylinder 165, a coating propulsion cylinder mounting plate 166, a disc protective medium three-jaw chuck 167, a disc protective medium 168, a shear cylinder mounting plate 169, a shear cylinder 170, and a disc protective medium three-jaw chuck mounting assembly 171.

[0098] The bottom coating component mounting plate 151 is used for assembly and fixation with the rack table; the auxiliary wheel group 152 is fixed to the side of the bottom coating component mounting plate 151; the auxiliary wheel group 2 153 is fixed to the top of the bottom coating component mounting plate 151 through the wheel group mounting plate 154, on the one hand, it is used for auxiliary tensioning of the protective medium, and on the other hand, it is used as a rotating hinge; the anti-sticking block 156 is installed on the wheel group mounting plate 154, attached to the auxiliary wheel group 2 153 and the follower wheel group 159; the scissor push cylinder 157 is fixed on the scissor push cylinder mounting plate 155, and is used to push the scissors 158 to the shearing position to prepare for the shearing of the protective medium; the scissors 158 are installed on the shear cylinder mounting plate 169; the follower wheel group 159 is installed on the wheel group mounting plate 154; the bottom coating pressing wheel group 160 is used to realize the edge pressure of the protective medium on the bottom coating of the battery module The conveying wheel group 162 is installed on the conveying wheel group mounting plate 161 to realize the outflow of the battery module; the visual inspection system 163 is installed on the visual inspection system mounting plate 164 to realize the automatic detection and judgment of the coating quality; the coating propulsion cylinder 165 is fixed on the bottom surface coating component mounting plate 151 through the coating propulsion cylinder mounting plate 166, and is used to drive the wheel group mounting plate 154 along the hinge where the auxiliary wheel group 153 is located to realize the close coating of the battery module; the disc type protective medium three-jaw chuck 167 is installed on the bottom surface coating component mounting plate 151 through the disc type protective medium three-jaw chuck mounting assembly 171; the disc type protective medium 168 is fed and fixed by the disc type protective medium three-jaw chuck 167; the shearing cylinder 170 is installed on the shearing cylinder mounting plate 169 to realize the cutting of the protective medium.

[0099] Among them, the first bottom surface covering module 15b and the second bottom surface covering module 15c are movably connected to the base 15a to adjust the spacing d, so that within the movement range of the covering contour transfer robot 2 and within the adjustable spacing d range of the bottom surface covering component 15 belonging to the covering unit 1, the special machine equipment has good compatibility with battery modules of different lengths, widths and heights.

[0100] In this embodiment, the first bottom surface covering module 15b and the second bottom surface covering module 15c are driven by servo motors to move forward and reverse screws along the linear guide rail assembly to achieve automatic pitch change, and can be automatically adjusted according to the length of the battery module to be covered.

[0101] like Figures 11 to 13 As shown, the structure of the circumferential coating assembly 14 of the present invention is similar to that of the bottom coating assembly 15, and is used to achieve circumferential coating of the bottom of the battery module, and is compatible with straight surface and curved surface coating. The circumferential coating assembly 14 of the present invention includes a circumferential coating wheel set and a circumferential surface cutting piece, the circumferential coating wheel set wraps the coating tape around the battery module clamped by the coating profiling transfer robot, and the circumferential surface cutting piece is used to cut the coating tape.

[0102] A set of peripheral coating components 14 cooperates with the coating profiling transfer robot 2 to realize the automatic coating of the bottom peripheral surface of the battery module 3. The specific process flow is as follows: Fig.12 and Fig.13 As shown, the module picking claw 26 of the coated contour transfer robot 2 first picks up the battery module 3, and then clamps the battery module along Fig. 9 The central direction N performs interpolation movement. During the interpolation movement, the covering wheel group of the peripheral covering component 14 drives the covering belt 4 to follow and adhere to the peripheral surface of the bottom of the battery module 3, thereby completing the covering operation on the peripheral surface of the bottom of the battery module 3.

[0103] In addition, both the peripheral coating component 14 and the bottom coating component 15 have a visual inspection system. For example, the bottom coating component 15 includes a visual inspection system 163, which is used for real-time automatic detection and real-time automatic determination of coating quality defects during the coating process. The specific inspection process is: establish a standard image template in the visual system, match the real-time detected coating tape image with the standard image template, if it is a complete match, it means that the coating quality is qualified; if it cannot be matched, it is classified according to the image processing results to identify coating defects such as bubbles, bulging, and wrinkles. By setting up a visual inspection system, the present invention can realize real-time online monitoring of the coating quality during the coating process of the battery module, which completely solves the difficult common problems of time-consuming and labor-intensive manual inspection and difficult control of quality consistency in the bottom coating process of the battery module.

[0104] In summary, the method for automatic coating of the bottom of a battery module of the present invention comprises the following steps:

[0105] The coated contour transfer robot grabs the battery module;

[0106] The circumferential coating component coats the circumferential bottom surface of the battery module clamped by the coating contour transfer robot;

[0107] The bottom surface covering component covers both sides of the bottom surface of the battery module clamped by the covering contour transfer robot;

[0108] Among them, the coating contour transfer robot clamps the battery module and contour moves according to the preset coating path, and the peripheral coating component and the bottom coating component contour coat the peripheral surface and bottom surface of the battery module respectively.

[0109] The present invention can realize the contour coating of the bottom surface of battery modules with different contour shapes, and solves the problem of spatial coating around the bottom and bottom surface of the battery module by designing the spatial distribution of each coating unit. The special structural design of the equipment has good compatibility with modules of different shapes and sizes.

[0110] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A special machine for automatic coating of the bottom of a battery module, characterized in that: It includes a coating unit and a coating profiling transfer robot, wherein the coating profiling transfer robot clamps the battery module, and the coating unit includes: Covering the unit frame; A peripheral covering assembly is connected to the covering unit frame, and the peripheral covering assembly covers the covering tape along the peripheral bottom of the battery module; and The bottom surface covering component is connected to the covering unit frame, and the bottom surface covering component covers the covering belt along the bottom sides of the battery module.

2. The special machine equipment for automatic coating of the bottom of the battery module according to claim 1 is characterized in that: The coated contour transfer robot comprises a mechanical mobile phone frame and a module picking gripper connected to the mechanical mobile phone frame, and the module picking gripper is used for clamping the battery module.

3. The special machine equipment for automatic coating of the bottom of the battery module according to claim 2 is characterized in that: The module picking gripper comprises a gripper base plate and a clamping mechanism and a lifting mechanism respectively connected to the gripper base plate. The clamping mechanism clamps the battery module, and the lifting mechanism drives the battery module to rise and fall.

4. The special machine equipment for automatic coating of the bottom of the battery module according to claim 2 is characterized in that: The module picking gripper is connected to the mechanical mobile phone holder through a first direction moving component, a second direction moving component and a third direction moving component.

5. The special machine equipment for automatic coating of the bottom of the battery module according to claim 1 is characterized in that: The bottom surface covering component and the surrounding surface covering component respectively include a visual inspection system.

6. The special machine equipment for automatic coating of the bottom of the battery module according to any one of claims 1 to 5, characterized in that: The bottom surface covering assembly includes a base and a first bottom surface covering module and a second bottom surface covering module symmetrically connected to the base, wherein there is a distance between the first bottom surface covering module and the second bottom surface covering module, and the first bottom surface covering module and the second bottom surface covering module respectively correspond to the bottom sides of the battery module.

7. The special machine equipment for automatic coating of the bottom of the battery module according to claim 6 is characterized in that: The first bottom surface covering module group and the second bottom surface covering module group are movably connected to the base to adjust the distance.

8. The special machine equipment for automatic coating of the bottom of the battery module according to claim 6 is characterized in that: The first bottom surface covering module and the second bottom surface covering module respectively include a bottom surface covering pressing wheel group and a bottom surface cutting piece. The covering contour transfer robot drives the clamped battery module to contour move. The bottom surface covering pressing wheel group applies the covering tape along the bottom of the clamped battery module, and the bottom surface cutting piece is used to cut the covering tape.

9. The special machine equipment for automatic coating of the bottom of the battery module according to any one of claims 1 to 5, characterized in that: The circumferential coating assembly includes a circumferential coating wheel group and a circumferential surface cutting piece. The coating profiling transfer robot drives the clamped battery module to perform profiling movements. The circumferential coating wheel group applies a coating tape along the circumference of the battery module, and the circumferential surface cutting piece is used to cut the coating tape.

10. A method for automatic coating of the bottom of a battery module, characterized in that: The steps include: The coated contour transfer robot grabs the battery module; The circumferential coating component coats the circumferential bottom surface of the battery module clamped by the coating contour transfer robot; The bottom surface covering component covers both sides of the bottom surface of the battery module clamped by the covering contour transfer robot; Among them, the coating contour transfer robot clamps the battery module and contour moves according to the preset coating path, and the peripheral coating component and the bottom coating component contour coat the peripheral surface and bottom surface of the battery module respectively.

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