Automated detection and film pasting equipment for power battery cover plate

Abstract

The application discloses a power battery cover plate automatic detection and film pasting device, which comprises a battery cover plate supply device, a high-voltage testing 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 testing device comprises a detection carrier and a detection platform, and the detection carrier is provided with a profiling high-voltage detection part, a high-voltage preliminary detection part and a high-voltage re-detection part. The detection and film pasting device comprises a rotating disc, a feeding station, an internal resistance detection station, a film pasting station, a film pasting detection station, a flatness detection station, a resistance detection station and a discharging station which are sequentially arranged along the rotating direction of the rotating disc. The application realizes the full-automatic detection and film pasting of the battery cover plate by combining the linear switching station with the rotating disc switching station, and the overall layout is compact and the stations are cleverly matched. The application meets the high-voltage detection tide cooperation requirement, realizes the profiling high-voltage detection, the high-voltage preliminary detection and the high-voltage re-detection, and reduces the missed detection rate.

Description

Technical Field

[0001] This invention relates to an automated testing and film-applying equipment for power battery covers, belonging to the technical field of battery cover testing. Background Technology

[0002] The power battery system (power battery PACK, battery pack) is the core energy source that provides driving power for new energy vehicles and is one of the most critical components of new energy vehicles. The power battery system mainly consists of battery modules, electrical systems, thermal management systems, housings, and BMS, etc. The housing encapsulates the battery modules, electrical systems, thermal management systems, and BMS, forming the main body of the power battery system.

[0003] All power batteries have battery covers with electrodes. Battery cover assembly includes the assembly of the battery cover, explosion-proof valve, plastic substrate, and positive and negative electrode components. After assembly, welding and other operations, the finished battery cover is obtained.

[0004] The battery cover is a crucial core component for ensuring the safety of power batteries. Therefore, after the finished product passes welding and helium testing, it still needs to undergo high-voltage testing, internal resistance testing, and film application.

[0005] In traditional processes, high-voltage testing, internal resistance testing, and film application testing all require separate equipment operation. This necessitates manual handling or automated transport between these devices, resulting in long production lines and significantly impacting operational efficiency. Furthermore, as quality requirements for battery covers become increasingly stringent, additional tests such as contour-following high-voltage testing and leveling testing have been added. Traditional equipment struggles to be compatible with these additional tests and can be expanded to accommodate them. Moreover, traditional testing methods are typically single-station designs, often leading to misjudgments in high-voltage testing, requiring secondary inspections. Even during these secondary inspections, defective products are prone to incorrect sorting, potentially posing safety hazards to the finished power batteries. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art and to propose an automated testing and film-applying device for power battery covers, which addresses the problem that traditional testing equipment has limited functionality and low automation, making it unable to meet the growing demand for testing items.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] An automated testing and film-applying device for power battery covers, including a battery cover supply device, a high-voltage testing device, and a testing and film-applying device;

[0009] The battery cover supply device includes a battery cover supply conveyor line and a cover plate turnover mechanism for supplying battery covers to the battery cover supply conveyor line for turnover.

[0010] The high-voltage testing device includes at least one high-voltage testing mechanism. The high-voltage testing mechanism includes a testing frame and a testing platform with linear switching displacement located at the bottom of the testing frame. The testing frame is provided with a conformal high-voltage testing section, a high-voltage preliminary testing section, and a high-voltage retesting section arranged sequentially along the conveying direction of the battery cover supply conveyor line. The testing platform is provided with a conformal high-voltage cover loading position for corresponding to the conformal high-voltage testing section, a preliminary testing cover loading position for corresponding to the high-voltage preliminary testing section, and a retesting cover loading position for corresponding to the high-voltage retesting section. The testing platform has a testing displacement relative to the testing frame and a material-bearing displacement relative to the cover turnover mechanism.

[0011] The film-applying detection device includes a rotating disk with several cover plate carriers, a feeding station, an internal resistance detection station, a film-applying station, a film-applying detection station, a flatness detection station, a resistance detection station, and a unloading station arranged sequentially along the rotation direction of the rotating disk. Each of the cover plate carriers is provided with a through cavity, and the rotating disk is provided with through-fitting grooves that correspond one-to-one with the through cavities.

[0012] The cover plate turnover mechanism includes a linkage turnover frame with lifting displacement and linear switching displacement. The linkage turnover frame is provided with a first transfer part for switching displacement between the battery cover plate supply conveyor line and the conforming high voltage cover plate loading position, a second transfer part for switching displacement between the conforming 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 material loading position.

[0013] The internal resistance detection station includes an internal resistance detection mechanism for detecting the internal resistance of the battery cover plate.

[0014] The film application station includes a film application mechanism for applying a protective film to the explosion-proof valve of the battery cover.

[0015] The film-applying inspection station includes a protective film image inspection mechanism;

[0016] The flatness detection station includes a flatness scanning mechanism for detecting the flatness of the battery cover.

[0017] The resistance testing station includes a resistance testing mechanism for testing the resistance of the battery cover plate.

[0018] The unloading station includes a sorting unloading group and an unloading turnover device for switching displacement between the sorting unloading group and the unloading station.

[0019] Preferably, the first transfer section, the second transfer section, the third transfer section, and the fourth transfer section each have a plurality of negative pressure adsorption ends;

[0020] The battery cover is provided with a liquid injection hole, and the first transfer part is provided with a vacuum detection part for relative alignment with the position of the liquid injection hole.

[0021] Preferably, the high-pressure testing device includes two high-pressure testing mechanisms arranged in a mirror-symmetric manner, and the detection platforms of the two high-pressure testing mechanisms operate alternately during the material displacement phase.

[0022] Preferably, the internal resistance detection mechanism includes an internal resistance detection base with an upward displacement and an internal resistance detection top seat with a lifting displacement disposed on the top of the internal resistance detection base.

[0023] 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.

[0024] Preferably, the film application mechanism includes a protective film supply unit, a turnover film application unit for turnover film application, and a visual guide unit located on the turnover path of the turnover film application unit.

[0025] Preferably, the flatness scanning mechanism includes a laser scanner with linear displacement.

[0026] Preferably, the resistance detection mechanism includes a detection carrier and a resistance detection contact portion disposed on the detection carrier, which has a lifting displacement.

[0027] Preferably, the testing carrier is provided with a puncture part that has lifting displacement and is positioned opposite to the explosion-proof valve of the battery cover.

[0028] Preferably, the sorting and unloading group is located on the side of the rotary table opposite to the battery cover plate supply device, and the sorting and unloading group includes a good product conveying line and several NG sorting lines;

[0029] The unloading station is arranged adjacent to the loading station. 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 classified unloading group.

[0030] The first conveying mechanism has a scrap compartment on its displacement path; the first conveying mechanism includes a material handling end with linear displacement, lifting displacement and rotational displacement.

[0031] The second handling mechanism includes a negative pressure picking end with linear displacement and lifting displacement.

[0032] Preferably, the good product conveyor line includes a whole conveyor belt, and the negative pressure pickup end of the second handling mechanism has rotational displacement.

[0033] The beneficial effects of this invention are mainly reflected in:

[0034] 1. The battery cover is fully automated for inspection and film application by combining linear switching stations and rotary switching stations. The overall layout is compact and the stations are cleverly coordinated.

[0035] 2. It meets the requirements of high-voltage inspection tidal coordination, and can realize the requirements of contour high-voltage inspection, high-voltage initial inspection and high-voltage re-inspection, with efficient operation process and reduced false negative rate.

[0036] 3. The design of unloading and transfer is adopted to meet the material turning and unloading requirements and to facilitate classified unloading. Attached Figure Description

[0037] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0038] Figure 1 This is a schematic diagram of the structure of the automated testing and film-applying equipment for the power battery cover of the present invention.

[0039] Figure 2 This is a top view schematic diagram of the automated inspection and film application equipment for the power battery cover of the present invention.

[0040] Figure 3 This is a schematic diagram of the cover plate turnover mechanism in this invention.

[0041] Figure 4 This is a schematic diagram of the high-voltage testing device in this invention.

[0042] Figure 5 This is a schematic diagram of the internal resistance detection mechanism in this invention.

[0043] Figure 6 This is a schematic diagram of the film-applying mechanism in this invention.

[0044] Figure 7 This is a schematic diagram of the protective film image detection mechanism in this invention.

[0045] Figure 8 This is a schematic diagram of the flatness scanning mechanism in this invention.

[0046] Figure 9 This is a schematic diagram of the resistance detection mechanism in this invention.

[0047] Figure 10This is a schematic diagram of the material handling and picking end in this invention.

[0048] Figure 11 This is a schematic diagram of the structure of the sorting and unloading group in this invention. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0051] This invention provides an automated testing and film-applying device for power battery cover plates, such as... Figures 1 to 11 As shown, it includes a battery cover supply device 1, a high voltage testing device 2, and a testing film applicator 3.

[0052] The battery cover supply device 1 includes a battery cover supply conveyor line 11 and a cover turnover mechanism 12 for rotating the battery cover 100 supplied by the battery cover supply conveyor line.

[0053] The high-voltage testing device 2 includes at least one high-voltage testing mechanism 20. The high-voltage testing mechanism 20 includes a testing frame 21 and a testing platform 22 with linear switching displacement located at the bottom of the testing frame. The testing frame 21 is provided with a contoured high-voltage testing section 211, a high-voltage preliminary testing section 212, and a high-voltage retesting section 213 arranged sequentially along the conveying direction of the battery cover plate supply conveyor line. The testing platform 22 is provided with a contoured high-voltage cover plate loading position 221 for corresponding to the contoured high-voltage testing section, a preliminary testing cover plate loading position 222 for corresponding to the high-voltage preliminary testing section, and a retesting cover plate loading position 223 for corresponding to the high-voltage retesting section. The testing platform 22 has a testing displacement relative to the testing frame 21 and a material-bearing displacement relative to the cover plate turnover mechanism.

[0054] The film-applying testing device 3 includes a rotating disk 31 equipped with several cover plate carriers 310, a feeding station 32, an internal resistance testing station 33, a film-applying station 34, a film-applying testing station 35, a flatness testing station 36, a resistance testing station 37, and a unloading station 38 arranged sequentially along the rotation direction of the rotating disk 31. Each cover plate carrier 310 is provided with a through cavity, and the rotating disk is provided with through-fitting grooves that correspond one-to-one with the through cavities.

[0055] 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 conformal high voltage cover plate loading position, a second transfer part 122 for switching displacement between the conformal 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 material loading position.

[0056] The internal resistance testing station 33 includes an internal resistance testing mechanism 330 for testing the internal resistance of the battery cover.

[0057] The film application station 34 includes a film application mechanism 340 for applying a protective film to the explosion-proof valve of the battery cover.

[0058] The film application inspection station 35 includes a protective film image inspection mechanism 350.

[0059] The flatness inspection station 36 includes a flatness scanning mechanism 360 for inspecting the flatness of the battery cover.

[0060] The resistance testing station 37 includes a resistance testing mechanism 370 for testing the resistance of the battery cover.

[0061] The unloading station 38 includes a sorting unloading group 380 and an unloading turnover device 4 for switching displacement between the sorting unloading group and the unloading station.

[0062] Detailed implementation process and principle explanation:

[0063] Battery cover supply conveyor line 11 supplies battery covers. After the first transfer unit 121 picks them up, it places them on the conformal high-pressure cover loading position 221. The detection platform 22 is reset, and the conformal high-pressure detection unit 211 performs conformal high-pressure cover detection on the battery cover on the conformal high-pressure cover loading position 221. When the detection is completed, the detection platform 22 is moved out. At this time, the linkage turnover frame 120 is linked to continue the material transfer between the battery cover supply conveyor line 11 and the conformal high-pressure cover loading position 221. This cycle is repeated to meet the sequential switching position of the battery cover between the battery cover supply conveyor line, the conformal high-pressure cover loading position, the initial inspection cover loading position, the re-inspection cover loading position, and the loading station.

[0064] For high-voltage cover plates that fail the conformal high-voltage inspection, no further testing is performed in the high-voltage initial inspection and high-voltage re-inspection departments. Those that pass the conformal high-voltage inspection proceed to the initial inspection cover plate loading position 222, where they are tested in the high-voltage initial inspection department 212. Those that pass both the initial and re-inspections are considered qualified products; those that do not pass the re-inspection are considered high-voltage NG products. This reliable testing method reduces the missed detection rate, meets the performance requirements of battery cover plates, and reduces missed detection losses.

[0065] In the film application inspection process, the battery cover is first mounted at the loading station, and then rotates along the rotary table 31 to switch stations. At the internal resistance detection station 33, the internal resistance of the battery cover is detected by the internal resistance detection mechanism 330. At the film application station 34, the explosion-proof valve of the battery cover is applied by the film application mechanism 340. At the film application inspection station 35, the adhesion of the protective film is detected by the protective film image inspection mechanism 350. At the flatness inspection station 36, the flatness of the battery cover is detected by the flatness scanning mechanism 360. At the resistance detection station 37, the resistance of the battery cover is detected by the resistance detection mechanism 370.

[0066] After all the above workstations have been completed, the product enters the unloading workstation 38, and the various tested and classified products are placed into the classification unloading group 380 through the unloading and turnover device 4.

[0067] In one specific embodiment, the first transfer section, the second transfer section, the third transfer section, and the fourth transfer section each have a plurality of negative pressure adsorption ends; the battery cover plate is provided with a liquid injection hole, and the first transfer section is provided with a vacuum detection section 1210 for relative alignment with the position of the liquid injection hole.

[0068] The vacuum detection unit 1210 can perform foolproof vacuum detection based on the position of the injection hole to prevent reverse material supply and eliminate the possibility of the cover plate being damaged when it passes the detection position in reverse.

[0069] In one specific embodiment, the high-pressure testing device 2 includes two high-pressure testing mechanisms 20 arranged in a mirror-symmetric manner, and the detection platforms of the two high-pressure testing mechanisms operate alternately during the material displacement phase.

[0070] By utilizing the two high-voltage testing mechanisms 20 that operate alternately with the tides, the tides can be changed, thus the operating efficiency is steadily improved and the working gaps of high-voltage testing can be fully utilized.

[0071] In one specific embodiment, the internal resistance detection mechanism 330 includes an internal resistance detection base 331 with an upward displacement and an internal resistance detection top seat 332 with a lifting displacement disposed 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.

[0072] Specifically, by adjusting the relative displacement of the internal resistance detection base 331 and the internal resistance detection top seat 332, the top and bottom can be matched to stably hold the product for internal resistance detection.

[0073] In one specific embodiment, the film application mechanism 340 includes a protective film supply section 341, a turnover film application section 342 for turnover film application, and a visual guide section 343 located on the turnover path of the turnover film application section.

[0074] The turnover film application unit 342 picks up the protective film supplied by the protective film supply unit 341, and after passing through the visual guidance unit 343, applies it to the explosion-proof valve of the battery cover.

[0075] In one specific embodiment, the flatness scanning mechanism 360 includes a laser scanner 361 with linear displacement.

[0076] That is, the laser scanner 361 can achieve laser line scanning to meet the flatness detection requirements.

[0077] In one specific embodiment, the resistance detection mechanism 370 includes a detection carrier 371 and a resistance detection contact portion 372 disposed on the detection carrier and having a lifting displacement.

[0078] Resistance detection is achieved by the resistance detection contact 372 moving downwards to the detection part of the battery cover.

[0079] In a more specific embodiment, the detection carrier 371 is provided with a puncture part 5 that has a lifting displacement and is positioned opposite to the explosion-proof valve of the battery cover.

[0080] Battery cover plates may be misclassified or missed during later screening. High voltage and resistance tests are very important. If such NG products are used in later battery assembly, they will pose a significant safety hazard. In this case, the puncture part 5 can be used to scrap NG products.

[0081] In one specific embodiment, the sorting and unloading group 380 is located on the side of the rotary table away from the battery cover plate supply device, and the sorting and unloading group includes a good product conveying line 381 and several NG sorting lines 382.

[0082] Among them, NG classification line 382 includes NG lines for poor resistance, poor film application, and poor flatness.

[0083] The unloading station and the loading station are set up adjacent to each other. 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 sorting unloading group.

[0084] The first conveying mechanism has a scrap compartment 6 on its displacement path; the first conveying mechanism 42 includes a conveying and picking end 420 with linear displacement, lifting displacement and rotational displacement.

[0085] The second handling mechanism 43 includes a handling negative pressure pickup end 430 with linear displacement and lifting displacement.

[0086] Specifically, due to space constraints, the classification unloading group 380 is arranged on the avoidance side. The product is unloaded and transferred through the battery cover unloading turnover line 41. The first conveying mechanism 42 can rotate the tilted product on the unloading station through the conveying and picking end 420 and then load it onto the battery cover unloading turnover line 41, thus meeting the compact space layout turnover requirements for steering adjustment.

[0087] The second handling mechanism 43 achieves classified unloading by handling the negative pressure pickup end 430.

[0088] In one specific embodiment, the good product conveyor line includes a series of conveyor belts, and the negative pressure pickup end of the second handling mechanism has rotational displacement.

[0089] The finished product needs to be transported to the next workstation via this entire conveyor belt. The negative pressure pick-up end 430 can be used to adjust and load the conveyed material, meeting the docking and coordination requirements of the automated production line.

[0090] The above description demonstrates that the combination of linear switching stations and rotary switching stations achieves fully automated inspection and film application of battery covers, resulting in a compact overall layout and ingenious station coordination. It meets the requirements for high-voltage inspection with flexible scheduling, enabling contour-following high-voltage inspection, initial high-voltage inspection, and high-voltage re-inspection, resulting in a highly efficient process and reduced missed inspection rate. The unloading and transfer design facilitates material turning and unloading, enabling easy categorized unloading.

[0091] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0092] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles 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 such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. An automated testing and film-applying equipment for power battery cover plates, characterized in that: Includes battery cover supply device, high voltage testing device, and testing film application device; The battery cover supply device includes a battery cover supply conveyor line and a cover plate turnover mechanism for supplying battery covers to the battery cover supply conveyor line for turnover. The high-voltage testing device includes at least one high-voltage testing mechanism. The high-voltage testing mechanism includes a testing frame and a testing platform with linear switching displacement located at the bottom of the testing frame. The testing frame is provided with a conformal high-voltage testing section, a high-voltage preliminary testing section, and a high-voltage retesting section arranged sequentially along the conveying direction of the battery cover supply conveyor line. The testing platform is provided with a conformal high-voltage cover loading position for corresponding to the conformal high-voltage testing section, a preliminary testing cover loading position for corresponding to the high-voltage preliminary testing section, and a retesting cover loading position for corresponding to the high-voltage retesting section. The testing platform has a testing displacement relative to the testing frame and a material-bearing displacement relative to the cover turnover mechanism. The film-applying detection device includes a rotating disk with several cover plate carriers, a feeding station, an internal resistance detection station, a film-applying station, a film-applying detection station, a flatness detection station, a resistance detection station, and a unloading station arranged sequentially along the rotation direction of the rotating disk. Each of the cover plate carriers is provided with a through cavity, and the rotating disk is provided with through-fitting grooves that correspond one-to-one with the through cavities. The cover plate turnover mechanism includes a linkage turnover frame with lifting displacement and linear switching displacement. The linkage turnover frame is provided with a first transfer part for switching displacement between the battery cover plate supply conveyor line and the conforming high voltage cover plate loading position, a second transfer part for switching displacement between the conforming 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 material loading position. The internal resistance detection station includes an internal resistance detection mechanism for detecting the internal resistance of the battery cover plate. The film application station includes a film application mechanism for applying a protective film to the explosion-proof valve of the battery cover. The film-applying 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. The resistance testing station includes a resistance testing mechanism for testing the resistance of the battery cover plate. The unloading station includes a sorting unloading group and an unloading turnover device for switching displacement between the sorting unloading group and the unloading station.

2. The automated inspection and film application equipment for the power battery cover plate according to claim 1, characterized in that: The first transfer section, the second transfer section, the third transfer section, and the fourth transfer section each have 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 relative alignment with the position of the liquid injection hole.

3. The automated inspection and film application equipment for the power battery cover plate according to claim 1, characterized in that: The high-pressure testing device includes two high-pressure testing mechanisms arranged in a mirror-symmetric manner, and the detection platforms of the two high-pressure testing mechanisms operate alternately during the material displacement phase.

4. The automated inspection and film application equipment for the power battery cover plate according to claim 1, characterized in that: The internal resistance detection mechanism includes an internal resistance detection base with an upward displacement and an internal resistance detection top seat with a lifting displacement, which is disposed 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 automated inspection and film application equipment for the power battery cover plate according to claim 1, characterized in that: The film application mechanism includes a protective film supply unit, a turnover film application unit for turnover film application, and a visual guide unit located on the turnover path of the turnover film application unit.

6. The automated inspection and film application equipment for the power battery cover plate according to claim 1, characterized in that: The flatness scanning mechanism includes a laser scanner with linear displacement.

7. The automated inspection and film application equipment for the power battery cover plate according to claim 1, characterized in that: The resistance detection mechanism includes a detection carrier and a resistance detection contact part with lifting displacement disposed on the detection carrier.

8. The automated inspection and film application equipment for the power battery cover plate according to claim 7, characterized in that: The testing carrier is equipped with a puncture part that is positioned opposite the explosion-proof valve of the battery cover and has the ability to move up and down.

9. The automated inspection and film application equipment for the power battery cover plate according to claim 1, characterized in that: The sorting and unloading group is located on the side of the rotary table away from the battery cover plate supply device, and the sorting and unloading group includes a good product conveying line and several NG sorting lines; The unloading station is arranged adjacent to the loading station. 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 classified unloading group. The first conveying mechanism has a scrap compartment on its displacement path; the first conveying mechanism includes a material handling end with linear displacement, lifting displacement and rotational displacement. The second handling mechanism includes a negative pressure picking end with linear displacement and lifting displacement.

10. The automated inspection and film application equipment for the power battery cover plate according to claim 9, characterized in that: The good product conveyor line includes a whole column of conveyor belts, and the negative pressure picking end of the second handling mechanism has rotational displacement.

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