A multifunctional test platform for back contact cells

Abstract

This invention discloses a multifunctional testing platform for back-contact batteries, relating to the field of battery testing technology. It includes a testing platform, and further comprises: a placement box and a lifting frame mounted on the testing platform; a testing mechanism disposed inside the placement box, the testing mechanism including a mounting plate mounted inside the placement box, a first sliding groove formed inside the placement box, and a probe slidably connected inside the first sliding groove; and a moving mechanism disposed outside the lifting frame, the moving mechanism including a moving ring disposed above the testing platform, a first push rod connected to the moving ring, and a connecting pipe, the connecting pipe having a processing component disposed outside it, and the first push rod driving the connecting pipe and the processing component to move above the mounting plate. The testing mechanism also includes: a second sliding groove formed inside the placement box; and a limiting plate disposed inside the second sliding groove. This multifunctional testing platform for back-contact batteries achieves the goal of improving equipment utilization efficiency.

Description

Technical Field

[0001] This invention relates to the field of battery testing technology, specifically to a multifunctional testing platform for back-contact batteries. Background Technology

[0002] Back-contact solar cells are a high-efficiency photovoltaic technology that places all electrode grid lines on the back of the cell, leaving no metal obstructions on the front. This maximizes the light-absorbing area, improves conversion efficiency, and results in a uniform and aesthetically pleasing appearance. This design not only reduces optical losses but also improves overall passivation quality, which is beneficial for high-density packaging.

[0003] A utility model patent with publication number CN221995414U discloses a BC battery testing device. By converting multi-busbar cells into several-busbar cells for testing, this device ensures that it can test the electrical performance of cells with multiple busbars and small spacing. However, placing the battery on a pressure plate for testing can lead to uneven placement of the battery due to dust and impurities on the plate, resulting in inaccurate test results. Summary of the Invention

[0004] To overcome the problem that placing batteries on a pressure plate for testing can easily lead to uneven placement of the batteries and thus inaccurate test results due to dust and impurities on the pressure plate, this invention provides a multifunctional testing platform for back-contact batteries, including a testing table and further comprising:

[0005] The placement box and lifting frame are installed on the test bench;

[0006] The test mechanism is set inside the placement box, and the test mechanism includes an installation plate installed inside the placement box, a first slide groove opened inside the placement box, and a probe component slidably connected inside the first slide groove.

[0007] A moving mechanism is installed outside the lifting frame. The moving mechanism includes a moving ring installed above the test platform, a first push rod connected to the moving ring, and a connecting pipe. A processing component is installed outside the connecting pipe. The first push rod is used to drive the connecting pipe and the processing component to move above the mounting plate.

[0008] Preferably, the testing mechanism further includes:

[0009] A second groove is provided inside the placement box;

[0010] The limiting plate is located inside the second slide groove and is used to assist the user in removing the mounting plate.

[0011] Preferably, the moving mechanism further includes:

[0012] Limit cylinder installed above the lifting frame;

[0013] The first and second channels are opened inside the limiting cylinder;

[0014] The central tube is installed inside the limiting cylinder, and the movable ring is slidably connected to the outside of the central tube.

[0015] Preferably, the moving mechanism further includes:

[0016] An arc-shaped plate is installed outside the moving ring. The arc-shaped plate is adapted to the second channel and is used to control the central tube to be in a closed state.

[0017] The connecting frame is located below the moving ring;

[0018] The second push rod is mounted on the connecting frame, and the tray is connected to the telescopic end of the second push rod. The tray is used to cover the processing components.

[0019] Preferably, the processing component includes:

[0020] A collection cylinder fitted over the outside of the connecting pipe;

[0021] A limiting ring and a first adjusting rod are installed outside the collection cylinder. The first adjusting rod is used to limit the distance between two adjacent collection cylinders.

[0022] Preferably, the processing component further includes:

[0023] A third channel is located inside the collection cylinder;

[0024] Ventilation openings located inside the connecting pipe;

[0025] Contact components installed on the outside of the collection cylinder.

[0026] Preferably, the processing component further includes:

[0027] Two annular frames are installed inside the collection cylinder.

[0028] The railings installed inside the two ring frames are used to intercept impurities.

[0029] Preferably, the contact assembly includes:

[0030] An outer ring fitted around the outside of the collection cylinder;

[0031] The connecting box is located outside the outer ring and is connected to the collecting cylinder.

[0032] Preferably, the contact assembly further includes:

[0033] A first branch tube is disposed outside the connection box, and a contact plate is connected to the end of the first branch tube away from the connection box. The contact plate is used to contact the probe.

[0034] The second branch tubes installed at both ends of the contact plate and the fourth channel opened inside the second branch tubes are used to suck up dust and impurities flying up when the probe moves.

[0035] This invention provides a multifunctional testing platform for back-contact batteries. It has the following advantages:

[0036] 1. This multi-functional testing platform for back-contact batteries collects impurities and dust from the mounting plate by incorporating a moving mechanism and processing components. Existing battery testing equipment places the battery on a pressure plate for testing. However, dust and impurities on the pressure plate can cause uneven placement of the battery, leading to inaccurate test results. Therefore, the moving mechanism and processing components are incorporated to remove impurities from the surface of the glass plate before placing the battery, thus solving the aforementioned problem.

[0037] 2. This multi-functional testing platform for back-contact solar cells addresses the problem of traditional solar cell testing methods that use top-down lighting for cells with double-sided printed grid lines. For back-contact cells, both the positive and negative grid lines are printed on the back side. If the back side is attached to a metal plate, it would directly conduct electricity between the positive and negative terminals of the cell, causing a short circuit and making testing impossible. Therefore, a bottom-up lighting method is used to test back-contact cells mounted on a photovoltaic glass mounting plate, overcoming this issue.

[0038] 3. In this multi-functional test platform for back-contact batteries, when conducting back-contact battery tests, the back-contact battery is placed on a photovoltaic glass plate with the grid line surface facing up and the non-grid line surface facing down. The non-grid line surface receives light, and the probe or pin array directly contacts the grid line surface electrode, making it easy for the probe to directly press on the positive and negative electrodes of the grid line surface.

[0039] 4. This multi-functional testing platform for back-contact batteries, through the inclusion of a processing component, allows multiple collection cylinders with third channels to move above the mounting plate under the control of a moving mechanism, collecting dust and impurities on the mounting plate. Since the ventilation openings inside the connecting pipes face upwards, while the third channels for suction of dust and impurities face downwards, an adhesive barrier is installed between them to intercept dust and impurities, while also preventing plastic packaging fragments left on the mounting plate from adhering to the ventilation openings.

[0040] 5. This multi-functional battery testing platform with back contact features a moving mechanism and contact components that perform a rebound test on the probes before testing the battery. Traditional battery testing equipment immediately uses probes to test the battery after placement; if the probes are fatigued, it can affect the testing results. Therefore, a contact plate is provided to test the rebound of the probes, prompting the user to replace fatigued probes. Two fourth channels with downward-facing openings are provided on both sides of the contact plate to absorb and collect dust and impurities generated during probe movement. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0042] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0043] Figure 3 This is a schematic diagram of the structure of the placement box of the present invention;

[0044] Figure 4 This is a schematic diagram of the structure of the moving mechanism of the present invention;

[0045] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at point A;

[0046] Figure 6 This is a schematic diagram of the moving mechanism of the present invention from another perspective;

[0047] Figure 7 This is a schematic diagram of the structure of the processing component of the present invention;

[0048] Figure 8 This is a cross-sectional view of the collection tube of the present invention;

[0049] Figure 9 For the present invention Figure 7 A schematic diagram of the structure at point B.

[0050] In the diagram: 1. Test bench; 2. Placement box; 3. Test mechanism; 301. Mounting plate; 302. First slide rail; 303. Probe component; 304. Second slide rail; 305. Limiting plate component; 4. Lifting frame; 5. Moving mechanism; 501. Limiting cylinder; 502. First channel; 503. Second channel; 504. Central tube; 505. Connecting tube; 506. Processing assembly; 5061. Collection cylinder; 5062. First adjusting rod; 5063. 5064. Limiting ring; 5065. Third channel; 5066. Ventilation opening; 5067. Ring frame; 5068. Railing; 5079. Contact component; 5070. Outer ring; 5071. Connecting box; 5072. First branch pipe; 5073. Contact plate; 5074. Second branch pipe; 5075. Fourth channel; 508. Moving ring; 509. First push rod; 510. Arc plate; 511. Connecting frame; 512. Second push rod; 513. Support plate. Detailed Implementation

[0051] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0052] like Figures 1-9 As shown, the present invention provides a technical solution: a multi-functional testing platform for back contact batteries, which is described below.

[0053] Including test bench 1, it also includes:

[0054] The placement box 2 and the lifting frame 4 are installed on the test bench 1. The lifting frame 4 consists of a base and an electric push rod in the vertical direction.

[0055] The test mechanism 3 is set inside the placement box 2. The test mechanism 3 includes a mounting plate 301 installed inside the placement box 2, a first slide groove 302 opened inside the placement box 2, and a probe 303 slidably connected inside the first slide groove 302. The probe 303 can be set as a probe or a pin array. A light source is provided inside the placement box 2. The light source is located below the mounting plate 301. When testing the back contact battery, the mounting plate 301 is made of photovoltaic glass.

[0056] The moving mechanism 5 is located outside the lifting frame 4. The moving mechanism 5 includes a moving ring 508 located above the test platform 1, a first push rod 509 connected to the moving ring 508, and a connecting pipe 505. A processing component 506 is provided outside the connecting pipe 505. The first push rod 509 is used to drive the connecting pipe 505 and the processing component 506 to move above the mounting plate 301. The first push rod 509 is set as an electric push rod.

[0057] When testing a back-contact battery using the equipment, adjust the testing mechanism 3, place the photovoltaic glass mounting plate 301 in the placement box 2, and then use the moving mechanism 5 to remove impurities from the upper surface of the mounting plate 301. After removing the impurities, the user manually places the back-contact battery to be tested on the photovoltaic glass mounting plate 301 with the front of the back-contact battery facing down and the back of the printed grid lines facing up, adjusts the position of the probe 303, and performs the test.

[0058] Traditional solar cell testing methods employ top-down lighting for cells with double-sided printed grid lines. However, for back-contact cells, both the positive and negative grid lines are printed on the back side. If the back side is attached to a metal plate, it would directly conduct the positive and negative terminals of the cell, causing a short circuit and making testing impossible. Therefore, a bottom-up lighting method is used to test back-contact cells mounted on a photovoltaic glass mounting plate 301 to overcome this problem.

[0059] During testing, the back-contact cell is placed on a photovoltaic glass mounting plate 301 with the grid line side facing up and the non-grid line side facing down. The non-grid line side receives light, and the probe or pin array directly contacts the grid line electrode, making it easy for the probe to press directly onto the positive and negative electrodes of the grid line.

[0060] During testing, the reference plate can be fixed to the upper left of the photovoltaic glass mounting plate 301, and probes or pin arrays can be used to contact its grid line surface electrodes.

[0061] Testing facility 3 also includes:

[0062] A second groove 304 is formed inside the placement box 2;

[0063] A detachable limiting plate 305 is installed inside the second slide 304. The limiting plate 305 consists of an arc-shaped handle, a mounting bracket, and a suction strip below the mounting bracket.

[0064] The process of using test mechanism 3 to assist the user in disassembling mounting plate 301:

[0065] When it is necessary to remove and replace the mounting plate 301, the user manually inserts the mounting bracket into the second sliding groove 304 on both sides, presses down the arc-shaped handle, and the suction strip gradually adheres to and fixes with the mounting plate 301. Pulling up the arc-shaped handle causes the mounting bracket, suction strip, and mounting plate 301 to move upward, assisting the user in removing the mounting plate 301.

[0066] The mobile mechanism 5 also includes:

[0067] Limiting cylinder 501 installed above lifting frame 4;

[0068] The first channel 502 and the second channel 503 are opened inside the limiting cylinder 501. The first channel 502 is used to connect to the external pipe, which is connected to the external exhaust fan.

[0069] The central tube 504 is installed inside the limiting cylinder 501. Through grooves are opened on both sides of the central tube 504. The moving ring 508 is slidably connected to the outside of the central tube 504.

[0070] An arc-shaped plate 510 is installed outside the moving ring 508, and the arc-shaped plate 510 is adapted to the second channel 503;

[0071] The connecting bracket 511 is located below the moving ring 508;

[0072] The second push rod 512 is installed on the connecting frame 511 and the support plate 513 is connected to the telescopic end of the second push rod 512. The second push rod 512 is set as an electric push rod, and multiple support plates 513 are provided. Multiple support plates 513 are connected to each other through a second adjusting rod.

[0073] The process of using the moving mechanism 5 to remove impurities from the mounting plate 301:

[0074] Before using the equipment, activate the electric push rod in the vertical direction of the lifting frame 4. The electric push rod drives the limiting cylinder 501, the central tube 504, the moving ring 508, the connecting tube 505, and the processing component 506 to move upward, reserving working space for the placement or replacement of the mounting plate 301. Meanwhile, the second push rod 512 is in its initial state, and the support plate 513 blocks the processing component 506.

[0075] Before impurity suction, adjust the stroke of the electric push rod in the vertical direction of the lifting frame 4. The electric push rod drives the limiting cylinder 501, the central tube 504, the moving ring 508, the connecting pipe 505, and the processing component 506 to move downward. Start the second push rod 512, which drives the support plate 513 to move. At this time, the support plate 513 separates from the processing component 506. Start the external exhaust fan and use the processing component 506 to suction impurities from the mounting plate 301.

[0076] The first push rod 509 is activated to the reciprocating motion mode. The first push rod 509 drives the moving ring 508, the arc plate 510, the connecting pipe 505 and the processing component 506 to move in the horizontal direction. The processing component 506 works with the processing component 506 to suck up impurities at different positions above the mounting plate 301. At the same time, the arc plate 510 repeatedly enters and exits the second channel 503 on both sides during the movement.

[0077] The working process of using the moving mechanism 5 to perform contact testing on the probe 303:

[0078] After impurities are removed from the mounting plate 301, the moving mechanism 5 and the processing component 506 are used to contact and vacuum the probe 303.

[0079] Processing component 506 includes:

[0080] A collection cylinder 5061 is fitted over the outside of the connecting pipe 505;

[0081] A limiting ring 5063 and a first adjusting rod 5062 are disposed outside the collection cylinder 5061;

[0082] A third channel 5064 is opened inside the collection tube 5061, and multiple third channels 5064 are opened;

[0083] A vent 5065 is located inside the connecting pipe 505, with the vent 5065 opening upwards;

[0084] Contact assembly 507 installed on the outside of collection cylinder 5061;

[0085] Two annular frames 5066 are installed inside the collection cylinder 5061.

[0086] The railing 5067 is installed inside the two ring frames 5066 and is made of an adhesive material.

[0087] The process of using processing component 506 to remove impurities from mounting plate 301:

[0088] When the external exhaust fan is started, the limiting cylinder 501 is connected to the external pipe through the first channel 502, the central pipe 504 is connected to the limiting cylinder 501, the connecting pipe 505 is connected to the central cylinder, and the central cylinder and the collecting cylinder 5061 are connected through the ventilation port 5065.

[0089] Under the action of gas suction, the impurities and dust on the mounting plate 301 enter the collection cylinder 5061 through the third channel 5064. Subsequently, most of the dust and impurities are trapped at the railing 5067, which is made of adhesive material, to avoid the dust and impurities clogging the connecting pipe 505 and causing the other connecting cylinders to become unusable.

[0090] By incorporating the moving mechanism 5 and the processing component 506, impurities and dust on the mounting plate 301 are collected. In existing battery testing equipment, batteries are placed on a glass plate for testing. However, dust and impurities on the glass plate can easily cause the batteries to be placed unevenly, leading to inaccurate test results. Therefore, the moving mechanism 5 and the processing component 506 are incorporated to remove impurities from the surface of the glass plate before placing the batteries, thus solving the aforementioned problem.

[0091] By setting up the processing component 506, under the control of the moving mechanism 5, multiple collection cylinders 5061 with third channels 5064 move above the mounting plate 301 to collect dust and impurities on the mounting plate 301. Since the vent 5065 in the connecting pipe 505 opens upwards, while the third channel 5064 for sucking up dust and impurities opens downwards, an adhesive barrier 5067 is set between them to intercept dust and impurities, while preventing plastic packaging fragments left on the mounting plate 301 from sticking to the vent 5065.

[0092] Contact component 507 includes:

[0093] An outer ring 5071 fitted around the outside of the collection cylinder 5061;

[0094] A connecting box 5072 is disposed outside the outer ring 5071, and the connecting box 5072 is connected to the collection tube 5061;

[0095] A detachable first branch pipe 5073 is disposed outside the connecting box 5072, and a contact plate 5074 is connected to the end of the first branch pipe 5073 away from the connecting box 5072. The contact plate 5074 is made of rubber. The first branch pipe 5073 is connected to the collecting cylinder 5061 through the connecting box 5072. The connecting box 5072 without the first branch pipe 5073 is sealed by a plug.

[0096] The second branch pipe 5075 is installed at both ends of the contact plate 5074, and the fourth channel 5076 is opened inside the second branch pipe 5075. The second branch pipe 5075 is connected to the first branch pipe 5073 through the contact plate 5074.

[0097] The process of testing the probe 303 using the moving mechanism 5 and the contact assembly 507:

[0098] As the tray 513 blocks the third channel 5064, the stroke of the electric push rod in the vertical direction in the lifting frame 4 is adjusted. The electric push rod drives the connecting pipe 505, the collecting cylinder 5061, the outer ring 5071, the connecting box 5072, the first branch pipe 5073, and the touch plate 5074 to reciprocate in the vertical direction. The touch plate 5074 begins to repeatedly contact the probe 303. The user observes the rebound of the probe. If the probe rebounds no longer crisply, the probe is replaced to avoid inaccurate test results due to probe fatigue.

[0099] During the testing of probe 303, the external exhaust fan is in the start-up state, and the second branch pipe 5075 absorbs and collects the dust and impurities flying during the probe movement through the fourth channel 5076.

[0100] By setting up the moving mechanism 5 and the contact component 507, a rebound test is performed on the probe 303 before testing the battery. Traditional battery testing equipment uses the probe 303 to test the battery immediately after placement. If the probe 303 becomes fatigued, it can easily affect the testing results. Therefore, a contact plate 5074 is provided to test the rebound of the probe 303, prompting the user to replace the fatigued probe 303. Two fourth channels 5076 with downward-facing openings are provided on both sides of the contact plate 5074 to absorb and collect dust and impurities that fly up during the movement of the probe 303.

[0101] Working principle: Before using the equipment, activate the electric push rod in the vertical direction of the lifting frame 4. The electric push rod drives the limiting cylinder 501, the central tube 504, the moving ring 508, the connecting tube 505, and the processing component 506 to move upward, reserving working space for the placement or replacement of the mounting plate 301. Meanwhile, the second push rod 512 is in its initial state, and the support plate 513 blocks the processing component 506.

[0102] When testing the back contact battery using the equipment, adjust the testing mechanism 3 and place the photovoltaic glass mounting plate 301 into the placement box 2.

[0103] When it is necessary to remove and replace the mounting plate 301, the user manually inserts the mounting bracket into the second sliding grooves 304 on both sides, presses down the arc-shaped handle, and the suction strip gradually engages and fixes with the mounting plate 301. Pulling up the arc-shaped handle moves the mounting bracket, suction strip, and mounting plate 301 upwards, assisting the user in removing the mounting plate 301. The user then manually places the designated mounting plate 301 into the placement box 2.

[0104] Before impurity suction, adjust the stroke of the electric push rod in the vertical direction of the lifting frame 4. The electric push rod drives the limiting cylinder 501, the central tube 504, the moving ring 508, the connecting pipe 505, and the processing component 506 to move downward. Start the second push rod 512, which drives the support plate 513 to move. At this time, the support plate 513 separates from the processing component 506. Start the external exhaust fan and use the processing component 506 to suction impurities from the mounting plate 301.

[0105] The first push rod 509 is activated to the reciprocating motion mode. The first push rod 509 drives the moving ring 508, the arc plate 510, the connecting pipe 505 and the processing component 506 to move in the horizontal direction. The processing component 506 works with the processing component 506 to suck up impurities at different positions above the mounting plate 301. At the same time, the arc plate 510 repeatedly enters and exits the second channel 503 on both sides during the movement.

[0106] When the external exhaust fan is started, the limiting cylinder 501 is connected to the external pipe through the first channel 502, the central pipe 504 is connected to the limiting cylinder 501, the connecting pipe 505 is connected to the central cylinder, and the central cylinder and the collecting cylinder 5061 are connected through the ventilation port 5065.

[0107] Under the action of gas suction, the impurities and dust on the mounting plate 301 enter the collection cylinder 5061 through the third channel 5064. Subsequently, most of the dust and impurities are trapped at the railing 5067, which is made of adhesive material, to avoid the dust and impurities clogging the connecting pipe 505 and causing the other connecting cylinders to become unusable.

[0108] Then, the second push rod 512 is adjusted to its initial state, and the support plate 513 blocks the processing component 506. As the support plate 513 blocks the third channel 5064, the stroke of the electric push rod in the vertical direction in the lifting frame 4 is adjusted. The electric push rod drives the connecting pipe 505, the collecting cylinder 5061, the outer ring 5071, the connecting box 5072, the first branch pipe 5073, and the contact plate 5074 to reciprocate in the vertical direction. The contact plate 5074 begins to repeatedly contact the probe 303. The user observes the rebound of the probe. If the probe rebounds no longer crisply, the probe is replaced to avoid inaccurate test results due to probe fatigue.

[0109] During the testing of probe 303, the external exhaust fan is in the start-up state, and the second branch pipe 5075 absorbs and collects the dust and impurities flying during the probe movement through the fourth channel 5076.

[0110] After removing impurities, the user manually places the back contact battery to be tested on the photovoltaic glass mounting plate 301 with the front of the back contact battery facing down and the back of the printed grid lines facing up, adjusts the position of the probe 303, and performs the test.

[0111] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A multifunctional testing platform for back-contact batteries, comprising a testing stand (1), characterized in that, Also includes: The placement box (2) and the lifting frame (4) are installed on the test bench (1); The test mechanism (3) is set inside the placement box (2). The test mechanism (3) includes a mounting plate (301) installed inside the placement box (2), a first slide groove (302) opened inside the placement box (2), and a probe (303) slidably connected inside the first slide groove (302). A moving mechanism (5) is provided outside the lifting frame (4). The moving mechanism (5) includes a moving ring (508) provided above the test bench (1), a first push rod (509) connected to the moving ring (508), and a connecting pipe (505). A processing component (506) is provided outside the connecting pipe (505). The first push rod (509) is used to drive the connecting pipe (505) and the processing component (506) to move above the mounting plate (301).

2. The multifunctional testing platform for back contact batteries according to claim 1, characterized in that: The testing facility (3) also includes: A second groove (304) is formed inside the placement box (2); A limiting plate (305) is installed inside the second slide (304).

3. The multifunctional testing platform for back contact batteries according to claim 1, characterized in that: The moving mechanism (5) also includes: Limiting cylinder (501) installed above the lifting frame (4); The first channel (502) and the second channel (503) are opened inside the limiting cylinder (501); The central tube (504) is installed inside the limiting cylinder (501), and the moving ring (508) is slidably connected to the outside of the central tube (504).

4. The multifunctional testing platform for back contact batteries according to claim 3, characterized in that: The moving mechanism (5) also includes: An arc-shaped plate (510) is installed outside the moving ring (508), the arc-shaped plate (510) being adapted to the second channel (503); The connecting bracket (511) is located below the moving ring (508); The second push rod (512) and the tray (513) connected to the telescopic end of the second push rod (512) are mounted on the connecting frame (511).

5. The multifunctional testing platform for back contact batteries according to claim 4, characterized in that: The processing component (506) includes: A collection tube (5061) sleeved on the outside of the connecting pipe (505); A limiting ring (5063) and a first adjusting rod (5062) are disposed outside the collecting cylinder (5061).

6. The multifunctional testing platform for back contact batteries according to claim 5, characterized in that: The processing component (506) further includes: A third channel (5064) is opened inside the collection tube (5061). Ventilation opening (5065) inside the connecting pipe (505); Contact assembly (507) installed on the outside of the collection tube (5061).

7. The multifunctional testing platform for back contact batteries according to claim 1, characterized in that: The processing component (506) further includes: An annular frame (5066) is installed inside the collection cylinder (5061), and two annular frames (5066) are provided; Railings (5067) are installed inside the two ring frames (5066).

8. The multifunctional testing platform for back contact batteries according to claim 5, characterized in that: The contact assembly (507) includes: An outer ring (5071) fitted around the outside of the collecting cylinder (5061); A connecting box (5072) is disposed outside the outer ring (5071), and the connecting box (5072) is connected to the collecting cylinder (5061).

9. The multifunctional testing platform for back contact batteries according to claim 8, characterized in that: The contact assembly (507) further includes: A first branch pipe (5073) is disposed outside the connecting box (5072), and a contact plate (5074) is connected to the end of the first branch pipe (5073) away from the connecting box (5072). The second branch pipe (5075) is installed at both ends of the contact plate (5074), and the fourth channel (5076) is opened inside the second branch pipe (5075).

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