Automatic detection and film pasting equipment for power battery cover plate

Abstract

The invention discloses automatic detection and film pasting equipment for a power battery cover plate. The automatic detection and film pasting equipment comprises a battery cover plate supply device, a high-voltage test device and a detection and film pasting device, the battery cover plate supply device comprises a battery cover plate supply conveying line and a cover plate turnover mechanism; the high-voltage test device comprises a detection carrier and a detection platform. The detection carrier is provided with a profiling high-voltage detection part, a high-voltage initial detection part and a high-voltage redetection part. The detecting and film pasting device comprises a rotating disc, and a feeding station, an internal resistance detecting station, a film pasting station, a film pasting detecting station, a flatness detecting station, a resistance detecting station and a discharging station which are sequentially arranged in the rotating direction of the rotating disc. According to the invention, the full-automatic detection and film pasting requirements of the battery cover plate are realized by combining the linear switching station and the turntable switching station, the overall layout is compact, and the station cooperation is ingenious. The high-pressure detection tide matching requirement is met, the requirements of profiling high-pressure detection, high-pressure initial detection and high-pressure redetection can be met, the efficient process is operated, and the omission ratio is reduced.

Description

Technical Field

[0001] The invention relates to automatic detection and film sticking equipment for a power battery cover plate, belonging to the technical field of battery cover plate detection. Background Art

[0002] The power battery system (power battery PACK, battery pack) is the core energy source for providing driving power for new energy vehicles and is one of the most critical components of new energy vehicles. The power battery system is mainly composed of battery modules, electrical systems, thermal management systems, shells, BMS and other components. The battery modules, electrical systems, thermal management systems and BMS are packaged in the shell to form the main body of the power battery system.

[0003] All power batteries have a battery cover that carries electrodes. The battery cover assembly includes the assembly of the battery cover, explosion-proof valve, plastic substrate, positive and negative electrode components. After assembly and welding, the finished battery cover is obtained.

[0004] The battery cover is a vital core component to ensure the safe use of power batteries. Therefore, after the finished product passes the welding test and helium test, it is also necessary to undergo high-voltage testing, internal resistance testing, and film pasting.

[0005] In traditional processes, high-voltage testing, internal resistance testing, and film testing all need to be run on separate equipment, and manual turnover or automated transportation is required between the equipment, resulting in longer production lines and a significant impact on operating efficiency. In addition, as the quality requirements for battery covers become increasingly higher, profiling high-voltage testing, leveling testing, and other testing items have been added, making it difficult for traditional equipment to be compatible with expansion. At the same time, traditional testing is designed as a single station, and misjudgments often occur in high-voltage testing, requiring a second re-inspection. In addition, re-inspected defective products are also prone to screening errors, resulting in safety hazards in finished power batteries. Summary of the invention

[0006] The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art. Aiming at the problem that traditional detection equipment has a single function and a low degree of automation and cannot meet the growing demand for detection items, an automated detection and film-sticking equipment for power battery cover is proposed.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is: Automatic detection and film pasting equipment for power battery cover, including battery cover supply device, high voltage testing device, and detection and film pasting device; The battery cover plate supply device comprises a battery cover plate supply conveyor line and a cover plate turnover mechanism for rotating the battery cover plates supplied by the battery cover plate supply conveyor line; The high-voltage test device comprises at least one high-voltage test mechanism, which comprises a detection carrier and a detection platform with a linear switching displacement located at the bottom of the detection carrier, the detection carrier is provided with a profiling high-voltage detection part, a high-voltage initial inspection part, and a high-voltage re-inspection part sequentially arranged along the conveying direction of the battery cover plate supply conveyor line, the detection platform is provided with a profiling high-voltage cover plate loading position for correspondingly cooperating with the profiling high-voltage detection part, a primary inspection cover plate loading position for correspondingly cooperating with the high-voltage initial inspection part, and a re-inspection cover plate loading position for correspondingly cooperating with the high-voltage re-inspection part, and the detection platform has a detection displacement relative to the detection carrier and a material bearing displacement relative to the cover plate turnover mechanism; The film-sticking detection device comprises a rotating disk with a plurality of cover plate carriers, a loading station, an internal resistance detection station, a film-sticking station, a film-sticking detection station, a flatness detection station, a resistance detection station, and a discharging station arranged in sequence along the rotating direction of the rotating disk, any of the cover plate carriers is provided with a through cavity, and the rotating disk is provided with a through matching groove corresponding to the through cavity one by one; The cover plate turnover mechanism comprises a linkage turnover frame with lifting displacement and linear switching displacement, and the linkage turnover frame is provided with a first transfer part for switching displacement between the battery cover plate supply conveyor line and the profiling high-voltage cover plate loading position, a second transfer part for switching displacement between the profiling high-voltage cover plate loading position and the initial inspection cover plate loading position, a third transfer part for switching displacement between the initial inspection cover plate loading position and the re-inspection cover plate loading position, and a fourth transfer part for switching displacement between the re-inspection cover plate loading position and the loading station; The internal resistance detection station includes an internal resistance detection mechanism for performing internal resistance detection on the battery cover; The film sticking station includes a film sticking mechanism for sticking a protective film on the explosion-proof valve of the battery cover; The film sticking inspection station includes a protective film image inspection mechanism; The flatness detection station includes a flatness scanning mechanism for detecting the flatness of the battery cover plate; The resistance detection station includes a resistance detection mechanism for performing resistance detection on the battery cover; The unloading station comprises a classification unloading group and an unloading turnover device for switching displacement between the classification unloading group and the unloading station.

[0008] Preferably, the first transfer part, the second transfer part, the third transfer part, and the fourth transfer part are respectively provided with a plurality of negative pressure adsorption ends; The battery cover is provided with a liquid injection hole, and the first transfer part is provided with a vacuum detection part for cooperating with the position of the liquid injection hole.

[0009] Preferably, the high-voltage testing device comprises two high-voltage testing mechanisms that are arranged in mirror symmetry, and the detection platforms of the two high-voltage testing mechanisms operate tidally and alternately in the material receiving displacement phase.

[0010] Preferably, the internal resistance detection mechanism comprises an internal resistance detection base with an ascending displacement, and an internal resistance detection top seat with a ascending displacement and arranged on the top of the internal resistance detection base; The internal resistance detection base is provided with two internal resistance detection contact parts with adjustable position, and the internal resistance detection top seat is provided with two internal resistance pressure contact parts with adjustable position.

[0011] Preferably, the film sticking mechanism comprises a protective film supplying portion, a circumferential film sticking portion for circumferentially sticking the protective film, and a visual guiding portion located on a circumferential path of the circumferential film sticking portion.

[0012] Preferably, the flatness scanning mechanism comprises a laser scanner with linear displacement.

[0013] Preferably, the resistance detection mechanism comprises a detection carrier body and a resistance detection contact portion provided on the detection carrier body and having a lifting displacement.

[0014] Preferably, the detection carrier body is provided with a puncturing portion with lifting displacement and arranged opposite to the explosion-proof valve of the battery cover.

[0015] Preferably, the classification and unloading group is arranged on the side of the rotating disk away from the battery cover plate supply device, and the classification and unloading group includes a good product conveying line and a plurality of NG classification lines; The unloading station is arranged adjacent to the loading station, and the unloading turnover device includes a battery cover unloading turnover line, a first conveying mechanism for switching displacement between the unloading station and the loading end of the battery cover unloading turnover line, and a second conveying mechanism for switching displacement between the unloading end of the battery cover unloading turnover line and the classification unloading group; A scrapping cabin is provided on the displacement path of the first transport mechanism; the first transport mechanism comprises a transport and material collection end with linear displacement, lifting displacement and rotational displacement; The second transport mechanism includes a transport negative pressure pickup end with linear displacement and lifting displacement.

[0016] Preferably, the good product conveying line includes a whole row of conveyor belts, and the conveying negative pressure picking end of the second conveying mechanism has a rotational displacement.

[0017] The beneficial effects of the present invention are mainly reflected in: 1. The combination of linear switching stations and turntable switching stations is used to realize the fully automated inspection and film application of battery covers. The overall layout is compact and the stations are cleverly coordinated.

[0018] 2. It meets the requirements of high-voltage inspection and tidal coordination, can realize the requirements of profiling high-voltage inspection, high-voltage initial inspection and high-voltage re-inspection, runs an efficient process and reduces the missed inspection rate.

[0019] 3. The design of unloading transfer is adopted to meet the needs of material turning and unloading, and it is easy to realize classified unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a structural schematic diagram of the automatic detection and film laminating equipment for the power battery cover of the present invention.

[0021] Figure 2 It is a schematic diagram of the top structure of the automatic detection and film laminating equipment for the power battery cover plate of the present invention.

[0022] Figure 3 It is a structural schematic diagram of the cover plate turnover mechanism in the present invention.

[0023] Figure 4 It is a structural schematic diagram of the high voltage testing device of the present invention.

[0024] Figure 5 It is a structural schematic diagram of the internal resistance detection mechanism in the present invention.

[0025] Figure 6 It is a structural schematic diagram of the film sticking mechanism in the present invention.

[0026] Figure 7 It is a structural schematic diagram of the protective film image detection mechanism in the present invention.

[0027] Figure 8 It is a structural schematic diagram of the flatness scanning mechanism in the present invention.

[0028] Fig. 9 It is a structural schematic diagram of the resistance detection mechanism in the present invention.

[0029] Fig.10 It is a structural schematic diagram of the transporting and reclaiming end in the present invention.

[0030] Fig.11 It is a structural schematic diagram of the classification unloading group in the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the inventions. It should also be noted that, for ease of description, only the parts related to the relevant inventions are shown in the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0033] The present invention provides an automatic detection and film laminating device for a power battery cover, such as Figures 1 to 11 As shown, it includes a battery cover supply device 1, a high-voltage testing device 2, and a detection film sticking device 3.

[0034] The battery cover plate supply device 1 comprises a battery cover plate supply conveyor line 11 and a cover plate turnover mechanism 12 for rotating the battery cover plates 100 supplied by the battery cover plate supply conveyor line.

[0035] The high-voltage testing device 2 includes at least one high-voltage testing mechanism 20, which includes a detection carrier 21 and a detection platform 22 with a linear switching displacement located at the bottom of the detection carrier. The detection carrier 21 is provided with a contoured high-voltage detection part 211, a high-voltage initial inspection part 212, and a high-voltage re-inspection part 213 arranged in sequence along the conveying direction of the battery cover supply conveyor line. The detection platform 22 is provided with a contoured high-voltage cover loading position 221 for corresponding to the contoured high-voltage detection part, a initial inspection cover loading position 222 for corresponding to the high-voltage initial inspection part, and a re-inspection cover loading position 223 for corresponding to the high-voltage re-inspection part. The detection platform 22 has a detection displacement relative to the detection carrier 21 and a material receiving displacement relative to the cover turnover mechanism.

[0036] The film detection device 3 includes a rotating disk 31 with a plurality of cover plate carriers 310, a loading station 32, an internal resistance detection station 33, a film sticking station 34, a film sticking detection station 35, a flatness detection station 36, a resistance detection station 37, and an unloading station 38, which are arranged in sequence along the rotation direction of the rotating disk 31. A through cavity is provided on any cover plate carrier 310, and a through matching groove corresponding to the through cavity is provided on the rotating disk.

[0037] The cover plate turnover mechanism 12 includes a linkage turnover frame 120 with lifting displacement and linear switching displacement. The linkage turnover frame 120 is provided with a first transfer part 121 for switching displacement between the battery cover plate supply conveyor line and the profiling high-voltage cover plate loading position, a second transfer part 122 for switching displacement between the profiling high-voltage cover plate loading position and the initial inspection cover plate loading position, a third transfer part 123 for switching displacement between the initial inspection cover plate loading position and the re-inspection cover plate loading position, and a fourth transfer part 124 for switching displacement between the re-inspection cover plate loading position and the loading station.

[0038] The internal resistance detection station 33 includes an internal resistance detection mechanism 330 for performing internal resistance detection on the battery cover.

[0039] The film sticking station 34 includes a film sticking mechanism 340 for sticking a protective film on the explosion-proof valve of the battery cover.

[0040] The film sticking inspection station 35 includes a protective film image inspection mechanism 350 .

[0041] The flatness detection station 36 includes a flatness scanning mechanism 360 for detecting the flatness of the battery cover.

[0042] The resistance detection station 37 includes a resistance detection mechanism 370 for performing resistance detection on the battery cover.

[0043] The unloading station 38 includes a classification unloading group 380 and an unloading turnover device 4 for switching displacement between the classification unloading group and the unloading station.

[0044] Specific implementation process and principle description: The battery cover supply conveyor line 11 supplies battery covers, and the first transfer unit 121 picks up and places them on the profiling high-voltage cover loading position 221. The detection platform 22 is reset, and the profiling high-voltage detection unit 211 performs profiling high-voltage cover detection on the battery cover on the profiling high-voltage cover loading position 221. When the detection is completed, the detection platform 22 moves out, and the linkage turnover frame 120 is linked to continue the material transfer between the battery cover supply conveyor line 11 and the profiling high-voltage cover loading position 221, and the cycle is repeated, thereby satisfying the battery cover's sequential switching between the battery cover supply conveyor line, the profiling high-voltage cover loading position, the initial inspection cover loading position, the re-inspection cover loading position, and the loading station.

[0045] If the high-voltage cover plate fails the profiling test, no testing will be performed in the high-voltage initial test section and the high-voltage re-test section. If the high-voltage cover plate passes the profiling test, it will enter the initial test cover plate loading position 222, and the high-voltage initial test section 212 will test it. If it passes the initial test and re-test, it will be a qualified product, and if it fails the re-test, it will be a high-voltage NG product. This reliable testing reduces the missed detection rate, meets the performance requirements of the battery cover plate, and reduces the missed detection loss.

[0046] In the film testing operation, the battery cover is first loaded on the loading station, and then rotated along the rotating disk 31 to switch the stations. At the internal resistance testing station 33, the internal resistance testing mechanism 330 is used to test the internal resistance of the battery cover. At the film testing station 34, the protective film is pasted on the explosion-proof valve of the battery cover by the film testing mechanism 340. At the film testing station 35, the protective film adhesion is tested by the protective film image testing mechanism 350. At the flatness testing station 36, the flatness of the battery cover is tested by the flatness scanning mechanism 360. At the resistance testing station 37, the resistance of the battery cover is tested by the resistance testing mechanism 370.

[0047] After all the above stations have completed their operations, they enter the unloading station 38, and the various products that have been tested and classified are placed in the classified unloading group 380 through the unloading turnover device 4.

[0048] In a specific embodiment, the first transfer part, the second transfer part, the third transfer part, and the fourth transfer part respectively have a plurality of negative pressure adsorption ends; a liquid injection hole is provided on the battery cover plate, and a vacuum detection part 1210 for cooperating with the position of the liquid injection hole is provided on the first transfer part.

[0049] The vacuum detection unit 1210 can perform foolproof vacuum detection according to the position of the injection hole to prevent reverse material supply and prevent the reverse cover from being damaged after passing through the detection position.

[0050] In a specific embodiment, the high-voltage testing device 2 includes two high-voltage testing mechanisms 20 that are arranged in mirror symmetry, and the detection platforms of the two high-voltage testing mechanisms operate tidally alternately in the material receiving displacement phase.

[0051] The two high-voltage testing mechanisms 20 that operate alternately in tides can realize tidal alternation, so that the operating efficiency is stably improved and the operating intervals of high-voltage testing can be fully utilized.

[0052] In a specific embodiment, the internal resistance detection mechanism 330 includes an internal resistance detection base 331 with an upgrading displacement, and an internal resistance detection top seat 332 with a lifting displacement arranged on the top of the internal resistance detection base; two internal resistance detection contact parts with adjustable position are provided on the internal resistance detection base, and two internal resistance pressure contact parts with adjustable position are provided on the internal resistance detection top seat.

[0053] Specifically, the relative matching of the top and the bottom can be achieved through the relative displacement of the internal resistance detection base 331 and the internal resistance detection top seat 332, so that the internal resistance detection can be performed after the product is stably abutted and clamped.

[0054] In a specific embodiment, the film sticking mechanism 340 includes a protective film supplying unit 341, a circumferential film sticking unit 342 for circumferentially sticking the protective film, and a visual guiding unit 343 located on the circumferential path of the circumferential film sticking unit.

[0055] The turnover film sticking unit 342 picks up the protective film supplied by the protective film supply unit 341 , and sticks it on the explosion-proof valve of the battery cover after passing through the visual guiding unit 343 .

[0056] In one embodiment, the flatness scanning mechanism 360 includes a laser scanner 361 having a linear displacement.

[0057] That is, laser line scanning can be achieved by the laser scanner 361 to meet the flatness detection requirements.

[0058] In a specific embodiment, the resistance detection mechanism 370 includes a detection carrier body 371 and a resistance detection contact portion 372 disposed on the detection carrier body and capable of lifting and lowering displacement.

[0059] The resistance detection is achieved by the resistance detection contact portion 372 moving downward to abut against the detection portion of the battery cover.

[0060] In a more specific embodiment, the detection carrier body 371 is provided with a puncturing portion 5 with lifting displacement and arranged opposite to the explosion-proof valve of the battery cover.

[0061] If the battery cover is NG and classified incorrectly or is missed during later screening, the battery cover may be leaked. However, the detection of high voltage and resistance is very important. If such NG products are used in the later battery assembly, there will be a great safety hazard. In this case, the puncture part 5 can be used to scrap the NG products.

[0062] In a specific embodiment, the classification and unloading group 380 is arranged on the side of the rotating disk away from the battery cover plate supply device, and the classification and unloading group includes a good product conveying line 381 and a plurality of NG classification lines 382.

[0063] Among them, the NG classification line 382 includes a resistance failure NG line, a film failure NG line, a flatness failure NG line, and the like.

[0064] The unloading station is arranged adjacent to the loading station, and the unloading turnover device 4 includes a battery cover unloading turnover line 41, a first conveying mechanism 42 for switching displacement between the unloading station and the loading end of the battery cover unloading turnover line, and a second conveying mechanism 43 for switching displacement between the unloading end of the battery cover unloading turnover line and the classification unloading group.

[0065] A scrapping cabin 6 is provided on the displacement path of the first transport mechanism; the first transport mechanism 42 includes a transport and material collection end 420 with linear displacement, lifting displacement and rotational displacement.

[0066] The second transport mechanism 43 includes a transport negative pressure pickup end 430 with linear displacement and lifting displacement.

[0067] Specifically, due to space limitations, the avoidance side arrangement of the classification unloading group 380 is adopted, and the product unloading turnover is carried out through the battery cover unloading turnover line 41, and the first conveying mechanism 42 can rotate the inclined product on the unloading station through the conveying and picking end 420 and then load it on the battery cover unloading turnover line 41, thus meeting the compact space layout turnover requirements of steering adjustment.

[0068] The second transport mechanism 43 realizes classified unloading by transporting the negative pressure picking end 430 .

[0069] In a specific embodiment, the good product conveying line includes a whole row of conveyor belts, and the conveying negative pressure picking end of the second conveying mechanism has a rotational displacement.

[0070] That is, the finished product needs to be transported to the next workstation through the entire conveyor belt. The use of the negative pressure pick-up end 430 can realize the steering, adjustment and loading of the conveyed material to meet the docking and coordination requirements of the automated production line.

[0071] From the above description, we can find that the combination of linear switching stations and turntable switching stations can realize the full-automatic inspection and film application of battery covers. The overall layout is compact and the stations are cleverly coordinated. It meets the needs of high-voltage inspection and tidal coordination, can realize the needs of profiling high-voltage inspection, high-voltage initial inspection, and high-voltage re-inspection, runs an efficient process and reduces the missed inspection rate. The design of unloading transfer is adopted to meet the needs of material turning and unloading, and it is easy to realize classified unloading.

[0072] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus / device.

[0073] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. Automatic detection and film laminating equipment for power battery cover, characterized by: Including battery cover supply device, high voltage testing device, and film testing device; The battery cover plate supply device comprises a battery cover plate supply conveyor line and a cover plate turnover mechanism for rotating the battery cover plates supplied by the battery cover plate supply conveyor line; The high-voltage test device comprises at least one high-voltage test mechanism, which comprises a detection carrier and a detection platform with a linear switching displacement located at the bottom of the detection carrier, the detection carrier is provided with a profiling high-voltage detection part, a high-voltage initial inspection part, and a high-voltage re-inspection part sequentially arranged along the conveying direction of the battery cover plate supply conveyor line, the detection platform is provided with a profiling high-voltage cover plate loading position for correspondingly cooperating with the profiling high-voltage detection part, a primary inspection cover plate loading position for correspondingly cooperating with the high-voltage initial inspection part, and a re-inspection cover plate loading position for correspondingly cooperating with the high-voltage re-inspection part, and the detection platform has a detection displacement relative to the detection carrier and a material bearing displacement relative to the cover plate turnover mechanism; The film-sticking detection device comprises a rotating disk with a plurality of cover plate carriers, a loading station, an internal resistance detection station, a film-sticking station, a film-sticking detection station, a flatness detection station, a resistance detection station, and a discharging station arranged in sequence along the rotating direction of the rotating disk, any of the cover plate carriers is provided with a through cavity, and the rotating disk is provided with a through matching groove corresponding to the through cavity one by one; The cover plate turnover mechanism comprises a linkage turnover frame with lifting displacement and linear switching displacement, and the linkage turnover frame is provided with a first transfer part for switching displacement between the battery cover plate supply conveyor line and the profiling high-voltage cover plate loading position, a second transfer part for switching displacement between the profiling high-voltage cover plate loading position and the initial inspection cover plate loading position, a third transfer part for switching displacement between the initial inspection cover plate loading position and the re-inspection cover plate loading position, and a fourth transfer part for switching displacement between the re-inspection cover plate loading position and the loading station; The internal resistance detection station includes an internal resistance detection mechanism for performing internal resistance detection on the battery cover; The film sticking station includes a film sticking mechanism for sticking a protective film on the explosion-proof valve of the battery cover; The film sticking inspection station includes a protective film image inspection mechanism; The flatness detection station includes a flatness scanning mechanism for detecting the flatness of the battery cover plate; The resistance detection station includes a resistance detection mechanism for performing resistance detection on the battery cover; The unloading station comprises a classification unloading group and an unloading turnover device for switching displacement between the classification unloading group and the unloading station.

2. The automatic detection and film laminating equipment for power battery cover according to claim 1 is characterized in that: The first transfer part, the second transfer part, the third transfer part, and the fourth transfer part are respectively provided with a plurality of negative pressure adsorption ends; The battery cover is provided with a liquid injection hole, and the first transfer part is provided with a vacuum detection part for cooperating with the position of the liquid injection hole.

3. The automatic detection and film laminating equipment for power battery cover according to claim 1 is characterized in that: The high-voltage testing device comprises two high-voltage testing mechanisms arranged in mirror symmetry, and the detection platforms of the two high-voltage testing mechanisms operate tidally and alternately in the material receiving displacement phase.

4. The automatic detection and film laminating equipment for power battery cover according to claim 1 is characterized in that: The internal resistance detection mechanism comprises an internal resistance detection base with an ascending displacement, and an internal resistance detection top seat with a ascending displacement arranged on the top of the internal resistance detection base; The internal resistance detection base is provided with two internal resistance detection contact parts with adjustable position, and the internal resistance detection top seat is provided with two internal resistance pressure contact parts with adjustable position.

5. The automatic detection and film laminating equipment for power battery cover according to claim 1 is characterized in that: The film sticking mechanism comprises a protective film supplying portion, a circulating film sticking portion for circulating the protective film, and a visual guiding portion located on a circulating path of the circulating film sticking portion.

6. The automatic detection and film laminating equipment for power battery cover according to claim 1 is characterized in that: The flatness scanning mechanism includes a laser scanner with linear displacement.

7. The automatic detection and film laminating equipment for power battery cover according to claim 1 is characterized in that: The resistance detection mechanism includes a detection carrier body and a resistance detection contact portion provided on the detection carrier body and having a lifting displacement.

8. The automatic detection and film laminating equipment for power battery cover according to claim 7 is characterized in that: The detection carrier body is provided with a puncturing portion with lifting displacement and arranged opposite to the explosion-proof valve of the battery cover.

9. The automatic detection and film laminating equipment for power battery cover according to claim 1, characterized in that: The classification and unloading group is arranged on the side of the rotating disk away from the battery cover plate supply device, and the classification and unloading group includes a good product conveying line and a plurality of NG classification lines; The unloading station is arranged adjacent to the loading station, and the unloading turnover device comprises a battery cover unloading turnover line, a first conveying mechanism for switching displacement between the unloading station and the loading end of the battery cover unloading turnover line, and a second conveying mechanism for switching displacement between the unloading end of the battery cover unloading turnover line and the classification unloading group; A scrapping cabin is provided on the displacement path of the first transport mechanism; the first transport mechanism comprises a transport and material collection end with linear displacement, lifting displacement and rotational displacement; The second transport mechanism includes a transport negative pressure pickup end with linear displacement and lifting displacement.

10. The automatic detection and film laminating equipment for power battery cover according to claim 9, characterized in that: The good product conveying line includes a whole row of conveyor belts, and the conveying negative pressure picking end of the second conveying mechanism has a rotational displacement.

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