Battery piece testing machine and system

Abstract

The utility model relates to a battery piece testing machine table and system, and relates to the field of equipment for testing the electrical condition of a battery, and the battery piece testing machine table comprises a probe base and a light-transmitting part; wherein the light-transmitting piece is a component used for adsorbing and fixing a battery piece; the probe base is a component on which a probe is fixed, and the probe is used for being in contact with a grid line of the battery piece fixed on the light-transmitting piece; the light-transmitting part and the probe base are oppositely arranged at an interval, and the light-transmitting part and the probe base can move relatively, so that the distance between the light-transmitting part and the probe base is increased until all the probes on the probe base are not covered by the light-transmitting part. According to the invention, the light-transmitting member and the probe base move relatively until the probes on the probe base are not covered by the light-transmitting member, so that fragments on the probe base can be cleaned conveniently.

Description

Technical Field

[0001] The present application relates to the field of equipment for testing the electrical condition of a battery, and more particularly to a battery cell testing machine and system. Background Art

[0002] At present, in the field of new energy, solar cells are developing rapidly. In various types of high-efficiency cells, the full back electrode contact crystalline silicon cell has all the grid lines on the front transferred to the back. Since the metal grid lines on the front are abandoned, the incident light is used to the maximum extent, the optical loss is reduced, and the photoelectric conversion efficiency is improved, thereby improving the utilization rate of sunlight. The full back electrode contact crystalline silicon cell has become the focus of high-efficiency cells with its own advantages. Electrical performance testing is a very important link in the production process of solar cells. This process can ensure that the output solar cells have good electrical performance parameters.

[0003] However, since the full back electrode contacts the complex and dense metal grid lines on the back of the crystalline silicon cell, the structure of the IV tester becomes more complicated, and it is inconvenient to clean up the broken cell pieces or replace the probes during the test. Utility Model Content

[0004] The present application provides a battery cell testing machine and system, which can quickly remove the debris remaining on the probe base and replace the damaged probes.

[0005] The present application provides a battery cell testing machine, comprising a probe base and a light-transmitting member; wherein the light-transmitting member is a member for adsorbing and fixing the battery cell; the probe base is a member fixed with probes, and the probes are used to contact the grid lines of the battery cell fixed on the light-transmitting member; the light-transmitting member and the probe base are arranged relative to each other with a spacing, and the light-transmitting member and the probe base can move relatively, so as to increase the distance between the light-transmitting member and the probe base until the probes on the probe base are not covered by the light-transmitting member.

[0006] In the above technical solution, the light-transmitting member or the probe base can be relatively moved until the probes on the probe base are not covered by the light-transmitting member, and broken pieces that fall onto the probe base due to abnormal pressure, abnormal transmission, abnormal battery cell itself, etc. can be easily removed.

[0007] Damaged probes on the probe base can be quickly replaced, thereby improving the test sorting efficiency and production capacity of large-scale mass production.

[0008] The present application also provides a battery cell testing system, including a battery cell testing machine.

[0009] In the above technical solution, the battery cell testing system using the battery cell testing machine can improve the testing efficiency of the battery cells, thereby improving the testing and sorting efficiency and production capacity advantages of large-scale mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram showing the working principle of the IV test machine;

[0011] Figure 2 is a structural schematic diagram of the relationship between the probe base and the light-transmitting member in an embodiment;

[0012] Figure 3 is a schematic diagram of the structure of a circumferential drive assembly in a top view in an embodiment;

[0013] Figure 4 is a schematic diagram of the structure of the circumferential drive assembly observed along the horizontal direction in an embodiment;

[0014] Figure 5 is a schematic diagram of a structure in which a probe base is installed on a slideway in an embodiment;

[0015] Figure 6 The diagram is a schematic structural diagram of the relationship between the probe base and the linear drive assembly in an embodiment.

[0016] 1. Probe base; 11. Air hole; 12. Probe; 2. Light-transmitting part; 3. Circumferential drive assembly; 31. Servo motor; 32. Flip axis; 33. Transmission component; 331. Worm gear; 332. Worm; 34. Support rod; 4. Linear drive assembly; 41. Cylinder; 5. Slide; 6. Air pipe; 7. Light source; 8. Battery cell; 9. Main body. DETAILED DESCRIPTION

[0017] The present application is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present application will become clearer and more specific.

[0018] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0019] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0020] The cell described in this embodiment is a crystalline silicon cell with full back electrode contact. The gate lines of the crystalline silicon cell with full back electrode contact are all located on the back of the cell, which can maximize the use of incident light, reduce optical losses, and improve photoelectric conversion efficiency.

[0021] The front side of the cell is the surface of the cell facing the light source, the back side of the cell is the surface of the cell facing away from the light source, and the grid line of the cell is arranged on the back side of the cell.

[0022] The IV tester determines the performance and quality of the battery by measuring the current and voltage of the battery under specific lighting conditions. IV stands for current and voltage.

[0023] Reference Figure 1 For ease of description, a first direction is defined, which is the thickness direction of the light-transmitting member 2, the thickness direction of the battery cell 8 adsorbed and fixed on the light-transmitting member 2, and the relative direction between the light-transmitting member 2 and the probe base 1. The first direction is indicated as the X direction in the drawings. The light-transmitting member 2 is a component that can transmit light. When the light-transmitting member 2 is observed from top to bottom in all drawings, part of the structure on the probe base 1 below the light-transmitting member 2 is shown.

[0024] In the prior art, the structure of the IV test machine is complex. The light-transmitting component on the IV test machine is fixed, and the fixing method can be fixed by bolts. The integrated probe base on the IV test machine can move a set distance toward or away from the light-transmitting component. When the battery cell 8 is adsorbed and fixed on the light-transmitting component, the integrated probe base moves toward the light-transmitting component so that the probe 12 contacts the gate line on the battery cell 8 for conduction; after the test of the battery cell 8 is completed, the integrated probe base moves away from the light-transmitting component so that a gap exists between the probe 12 and the battery cell 8.

[0025] The IV tester includes a light source 7 placed above the light-transmitting component, and the light source 7 emits specific light to measure the battery cell 8. When testing the battery cell 8, the suction cup absorbs the front of the battery cell 8 and drives it to move between the light-transmitting component and the integrated probe base. After the light-transmitting component absorbs and fixes the battery cell 8, the integrated probe base moves toward the light-transmitting component, so that multiple probes 12 on the integrated probe base contact the grid lines at multiple positions on the back of the battery cell 8.

[0026] The cell 8 itself may carry debris left over from the production process; when the probe 12 contacts the cell 8, if the force exerted by the probe 12 on the cell 8 is inappropriate, battery fragments or probe 12 fragments will be generated, and the fragments will fall onto the integrated probe base, and it is necessary to clean the fragments between multiple probes 12. The existing light-transmitting component has a small distance from the integrated probe base, and the probes 12 are blocked by the light-shielding component, which makes it difficult to clean the fragments between the probes 12. The light-transmitting component needs to be disassembled before cleaning the fragments, which affects production efficiency.

[0027] The present application embodiment discloses a battery cell testing machine. Figure 2The cell tester comprises a probe base 1 and a light-transmitting member 2. The light-transmitting member 2 is a member for absorbing and fixing the cell 8; the probe base 1 is a member fixed with a probe 12, and the probe 12 is used to contact the grid line of the cell 8 fixed on the light-transmitting member 2.

[0028] The light-transmitting member 2 and the probe base 1 are arranged with a relative spacing, and the light-transmitting member 2 and the probe base 1 can move relatively to increase the distance between the light-transmitting member 2 and the probe base 1 until the probes 12 on the probe base 1 are not covered by the light-transmitting member 2 .

[0029] Specifically, the cell testing machine includes a main body 9 as a frame, and a probe base 1 and a light-transmitting member 2 are mounted on the main body 9 .

[0030] A plurality of probes 12 are fixedly arranged at intervals on the probe base 1 as required. The probes 12 in this embodiment are detachably fixedly connected to the probe base 1, and the probes 12 move synchronously with the probe base 1. In another embodiment, the probe base 1 may be connected with a plurality of groups of probes that can move relative to the probe base 1 along a first direction, and the plurality of groups of probes can move relatively independently along the first direction.

[0031] The light-transmitting member 2 is located above the probe base 1 , and the surface of the probe base 1 on which the probes 12 are arranged faces the light-transmitting member 2 .

[0032] The battery cell testing machine further includes a device mounted on the main body 9 and capable of driving the probe base 1 to move along a first direction so that the probe 12 is in contact with or separated from the battery cell 8 .

[0033] The light-transmitting member 2 is provided with an adsorption part which is the same as that in the prior art. In this embodiment, no special improvement is made to the adsorption part, and the adsorption part can be adaptively adjusted as required.

[0034] The probes 12 on the probe base 1 are covered by the light-transmitting member 2, indicating that at least one of all the probes 12 on the probe base 1 is covered by the light-transmitting member 2. In this case, when there is a foreign object between adjacent probes 12, it is inconvenient to use a tool to remove the foreign object to the outside of the probe base 1. The probes 12 are not covered by the light-transmitting member 2, indicating that the distance between the probes 12 and the light-transmitting member 2 along the first direction is greater than a set value, and the set value can be determined by comprehensively considering the tool for cleaning debris or the probe size.

[0035] The relative spacing between the light-transmitting member 2 and the probe base 1 indicates that when testing the battery cell 8 , the light-transmitting member 2 and the probe base 1 are arranged relative to each other along the thickness direction of the battery cell 8 , and there is a gap between the light-transmitting member 2 and the probe base 1 along the thickness direction of the battery cell 8 .

[0036] Specifically, the light-transmitting member 2 and the probe base 1 are spaced apart along the first direction, and the gap between the light-transmitting member 2 and the probe base 1 along the first direction is greater than the thickness of the battery cell 8 .

[0037] When in use, the battery cell 8 is moved between the light-transmitting member 2 and the probe base 1. At this time, the front side of the battery cell 8 faces the light-transmitting member 2, and the back side faces the probe base 1. The battery cell 8 is adsorbed and fixed on the light-transmitting member 2, and the probe base 1 moves along the first direction toward the light-transmitting member 2, so that the probe 12 on the probe base 1 is in conductive contact with the corresponding position of the gate line on the back side of the battery cell 8.

[0038] The light-transmitting member 2 and the probe base 1 can move relative to each other, including at least one of the light-transmitting member 2 and the probe base 1 rotating around an axis by a set angle or sliding along a set direction by a set distance.

[0039] Specifically, on one hand, the light-transmitting member 2 may move or the probe base 1 may move, and on the other hand, the light-transmitting member 2 may move and the probe base 1 may move. Movement includes sliding and / or rotating, such as the light-transmitting member 2 rotating around an axis by a set angle and / or sliding along a set direction by a set distance, or the probe base 1 rotating by a set angle and / or sliding along a set direction by a set distance.

[0040] Reference Figure 1 and Figure 2 In this embodiment, the light-transmitting member 2 rotates around the axis and the probe base 1 can slide along the set direction. In another embodiment, it can be set as required that only the light-transmitting member 2 rotates around the axis or the probe base 1 can slide along the set direction.

[0041] In this embodiment, the rotation axis of the light-transmitting member 2 is perpendicular to the first direction, and the sliding direction of the probe base 1 is perpendicular to the first direction and parallel to the rotation axis of the light-transmitting member 2. For ease of representation, a second direction is defined, which is the sliding direction of the probe base 1. The light-transmitting member 2 rotates around the second direction. The second direction is represented as the Y direction in the drawings. For details, please refer to Figure 3 .

[0042] When debris appears on the probe base 1, including broken pieces of the battery or damaged and fallen parts of the probe 12, the light-transmitting member 2 or the probe base 1 is moved to change the relative position of the light-transmitting member 2 and the probe base 1, so that the probes 12 on the probe base 1 are not covered by the light-transmitting member 2, so that it is convenient to use tools to remove the debris on the probe base 1. Compared with the prior art, the operation of removing the light-transmitting member 2 from the main body 9 is reduced.

[0043] The light-transmitting member 2 or the probe base 1 in this embodiment can be relatively moved until the probes 12 on the probe base 1 are not covered by the light-transmitting member 2, so that broken fragments dropped onto the probe base 1 due to abnormal pressure, abnormal transmission, abnormal battery cell 8 itself, etc. can be easily removed; the probes 12 on the probe base 1 can also be quickly replaced, thereby improving the test sorting efficiency and production capacity advantages of large-scale mass production.

[0044] Reference Figure 3 As an optional solution, a plurality of air holes 11 are provided on the probe base 1, and the air flowing out of the air holes 11 can blow the debris on the probe base 1 to move.

[0045] Reference Figure 2 and Figure 3 Specifically, the probe base 1 is provided with a plurality of air holes 11, and the plurality of air holes 11 are arranged in an array on the surface of the probe base 1 provided with the probe 12. The probe base 1 is also provided with a channel and an air inlet 11, the channel is connected to the plurality of air holes 11, the air inlet 11 is connected to the channel, and the air inlet 11 on the probe base 1 is connected to the air source through the air pipe 6.

[0046] When in use, the gas source delivers gas to the air hole 11 through the air pipe 6 and the hole in turn, and the gas is ejected from the air hole 11, thereby blowing the debris on the surface of the probe base 1 to move, making it easier to clean the debris on the probe base 1.

[0047] Reference Figure 3 As an optional solution, the cell testing machine further includes a circumferential driving component 3, which drives the light-transmitting member 2 to rotate to the first position or the second position.

[0048] The first position of the light-transmitting member 2 is a position where the light-transmitting member 2 and the probe base 1 are arranged opposite to each other with an interval; the second position of the light-transmitting member 2 is a position where the light-transmitting member 2 does not cover the probe 12 on the probe base 1 .

[0049] Specifically, the light-transmitting member 2 is rotatably mounted on the main body 9. When the light-transmitting member 2 is in the first position, the light-transmitting member 2 and the probe base 1 are spaced relative to each other, and the light-transmitting member 2 and the probe base 1 are spaced along the first direction. At this time, the battery cell 8 is moved between the light-transmitting member 2 and the probe base 1. After the light-transmitting member 2 and the battery cell 8 are fixed by adsorption, the probe base 1 moves to make the probe 12 contact the grid line of the battery cell 8 for electrical conduction to test the battery cell 8. The accompanying drawing only illustrates the structural schematic diagram of the light-transmitting member 2 in the first position.

[0050] In the present embodiment, when the light-transmitting member 2 is in the second position, the angle between the surface of the light-transmitting member 2 for adsorbing the battery cell 8 and the surface of the probe base 1 on which the probes 12 are provided is an obtuse angle. At this time, when cleaning the debris between the multiple probes 12 above the probe base 1, since the light-transmitting member 2 does not cover the probes 12 on the probe base 1, it is convenient to clean the debris and also convenient to replace the probes 12 on the probe base 1.

[0051] In another embodiment, when the light-transmitting member 2 is in the second position, the angle between the surface of the light-transmitting member 2 for adsorbing the battery cell 8 and the surface of the probe base 1 provided with the probes 12 is a right angle, or the angle is greater than 180°.

[0052] In another embodiment, the cell test machine is not provided with the circumferential driving assembly 3, and the light-transmitting member 2 is rotatably mounted on the main body 9. When the light-transmitting member 2 needs to be rotated, a person applies a force to the light-transmitting member 2 to drive the light-transmitting member 2 to rotate.

[0053] Furthermore, a handle is fixed on the light-transmitting member 2 , and the handle is convenient for a person to apply a force to the light-transmitting member 2 .

[0054] As an alternative, refer to Figure 2 The main body 9 is provided with a slide groove, and the length direction of the slide groove is perpendicular to the second direction. The circumferential drive assembly 3 also includes a support rod 34, one end of the support rod 34 is hinged to the light-transmitting member 2, and the other end is hinged to a sliding block, and the sliding block is partially located in the slide groove and slides along the length direction of the slide groove.

[0055] Reference Figure 3 As an optional solution, the circumferential drive assembly 3 includes a servo motor 31 and a flip shaft 32.

[0056] The flip shaft 32 is fixedly connected to the light-transmitting member 2 , and the flip shaft 32 is located at the edge of the light-transmitting member 2 ; the servo motor 31 drives the flip shaft 32 to rotate to the first position or the second position.

[0057] Specifically, the servo motor 31 is mounted and fixed on the main body 9 , and the flip shaft 32 is connected to the output shaft of the servo motor 31 . When the servo motor 31 is started, it can drive the flip shaft 32 to rotate around its own axis.

[0058] The flip shaft 32 is fixed on the light-transmitting member 2 . The flip shaft 32 is located on one side of the light-transmitting member 2 , so that when the light-transmitting member 2 rotates around the axis of the flip shaft 32 , it forms a V-shape with a changing angle relative to the probe base 1 .

[0059] When the servo motor 31 is started, it can drive the flip shaft 32 to rotate, so that the flip shaft 32 rotates to a set angle, and the light-transmitting member 2 rotates synchronously with the flip shaft 32. The servo motor 31 can drive the flip shaft 32 to rotate to a set angle, so that the light-transmitting member 2 is in the first position or the second position.

[0060] The light-transmitting member 2 is fixedly arranged at the first position or the second position. On the one hand, other components can be used to limit and fix the light-transmitting member 2 at the first position or the second position; on the other hand, the light-transmitting member 2 can be fixed by the servo motor 31 itself. The above two methods can be selected according to needs.

[0061] As an alternative, refer to Figure 2 The light-transmitting member 2 is provided with a through hole, and the main body 9 is provided with a connecting screw hole corresponding to the through hole on the light-transmitting member 2 in the first position. The circumferential drive assembly 3 also includes a Yuanbao nut, which passes through the through hole and is threadedly connected to the connecting screw hole to perform a fixed connection between the light-transmitting member 2 and the main body 9.

[0062] In another embodiment, the circumferential drive assembly 3 includes a cylinder 41 and a flip shaft 32, and the two ends of the cylinder 41 are respectively hinged to the main body 9 and the light-transmitting member 2. The cylinder 41 telescopes and drives the light-transmitting member 2 to rotate around the axis of the flip shaft 32, so that the light-transmitting member 2 moves to the first position or the second position.

[0063] Reference Figure 3 As an optional solution, the circumferential drive assembly 3 also includes a transmission component 33, which includes a worm wheel 331 and a worm 332 that mesh with each other; wherein the output shaft of the servo motor 31 is coaxially fixed with the worm 332; and the flip shaft 32 is coaxially fixed with the worm wheel 331.

[0064] Reference Figure 3 and Figure 4 Specifically, the output shaft of the servo motor 31 is fixedly connected to the worm 332 by a coupling, the worm 332 is meshed with the worm wheel 331, the flip shaft 32 is passed through the worm wheel 331, and the flip shaft 32 is fixedly connected to the worm wheel 331 by a key. Figure 4 Only part of the structure is shown.

[0065] When the servo motor 31 is started, the output shaft of the servo motor 31 drives the worm 332 to rotate, the worm 332 drives the worm wheel 331 to rotate, the worm wheel 331 drives the flip shaft 32 to rotate, and the flip shaft 32 drives the light-transmitting member 2 to rotate. When the output shaft of the servo motor 31 rotates to a set angle, it stops. At this time, since the worm wheel 331 and the worm 332 have self-locking properties, the position of the light-transmitting member 2 can be kept stable.

[0066] In another embodiment, the output shaft of the servo motor 31 and the flip shaft 32 are coaxially fixedly connected using a coupling.

[0067] Reference Figure 5 As an optional solution, the battery cell testing machine further includes a linear drive component 4, which drives the probe base 1 to slide to the third position or the fourth position.

[0068] The probe base 1 at the third position is a position where the probe base 1 is spaced apart from the light-transmitting member 2 . The probe base 1 at the fourth position is a position where the probes 12 on the probe base 1 are not covered by the light-transmitting member 2 .

[0069] Specifically, the probe base 1 is slidably mounted on the main body 9, and the sliding direction is along the second direction. A force is applied to the probe base 1, so that the probe base 1 slides and stops at the third position or the fourth position.

[0070] Exemplarily, at least two limit blocks are fixed on the main body 9, and the two limit blocks are arranged at intervals along the first direction, and the probe base 1 contacts one limit block when sliding to the third position, and contacts the other limit block when sliding to the fourth position, and the two limit blocks restrict the probe base 1 within the set area. The limit blocks are not shown in the drawings, and the drawings only show the structure of the probe base 1 in the third position.

[0071] When the probe base 1 is in the third position or the fourth position, on the one hand, other components can be used to limit and fix the probe base 1 in the third position or the fourth position, such as a snap; on the other hand, the probe base 1 can be fixed by a driving member that drives the probe base 1 to move. The above two methods can be selected according to needs.

[0072] As an optional solution, a sliding handle is fixed on the probe base 1, and a force is applied to the sliding handle to drive the probe base 1 to slide.

[0073] When the probe base 1 slides from the third position to the fourth position along the second direction, the probe base 1 moves to the outside directly below the light-transmitting member 2. At this time, it is convenient to operate the upper surface of the probe base 1 above the probe base 1, thereby facilitating cleaning of debris between adjacent probes 12 on the probe base 1 or replacing the probes 12 on the probe base 1.

[0074] Reference Figure 5 As an optional solution, a slideway 5 is provided on the main body 9.

[0075] A sliding member located in the slideway 5 is fixed on the probe base 1 , and the sliding member slides in the slideway 5 so that the probe base 1 is in the third position or the fourth position.

[0076] Specifically, two slideways 5 are provided on the main body 9, and the lengths of the two slideways 5 are arranged along the second direction. The two slideways 5 are respectively arranged on both sides of the probe base 1, and the probe base 1 is slidably mounted on the slide. Exemplarily, the sliding member includes two groups of sliders fixed on the probe base 1, and the two groups of sliders are slidably connected with the two slideways 5 in a one-to-one correspondence, and any group of sliders includes at least two sliders, and the sliders are not shown in the drawings.

[0077] Reference Figure 1 Further, the linear drive assembly 4 includes a cylinder 41 disposed on the main body 9, a cylinder body of the cylinder 41 is fixedly connected to the main body 9, and a piston rod of the cylinder 41 is fixedly connected to the probe base 1. The cylinder 41 operates to drive the probe base 1 to slide along the second direction to the third position or the fourth position.

[0078] In another embodiment, the linear drive assembly 4 includes a stepper motor for driving the probe base 1 to move.

[0079] The present application also discloses a battery cell testing system, which includes a battery cell testing machine and a light source 7 for irradiating the front side of the battery cell.

[0080] The "parallel" and "perpendicular" mentioned in this application can not only be completely parallel or perpendicular, but also can have a certain error; for example, if the angle between the two is greater than or equal to 0° and less than or equal to 5°, the two are considered to be parallel to each other; if the angle between the two is greater than or equal to 85° and less than or equal to 95°, the two are considered to be perpendicular to each other.

[0081] In the description of the present application, it should be noted that the terms "upper", "lower", "inside", "outside", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships in the working state of the present application. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0082] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0083] The present application has been described above in conjunction with preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, various replacements and improvements may be made to the present application, all of which fall within the scope of protection of the present application.

Claims

1. A battery cell testing machine, characterized in that: It includes a probe base and a light-transmitting member; wherein, The light-transmitting member is a component used to absorb and fix the battery sheet; The probe base is a component to which a probe is fixed, and the probe is used to contact the grid line of the battery cell fixed on the light-transmitting member; The light-transmitting member and the probe base are arranged with a relative spacing, and the light-transmitting member and the probe base can move relatively, so as to increase the distance between the light-transmitting member and the probe base until the probes on the probe base are not covered by the light-transmitting member.

2. The battery cell testing machine according to claim 1, characterized in that: The relative spacing between the light-transmitting member and the probe base indicates that when the battery cell is tested, the light-transmitting member and the probe base are arranged relative to each other along the thickness direction of the battery cell, and there is a gap between the light-transmitting member and the probe base along the thickness direction of the battery cell.

3. The battery cell testing machine according to claim 1, characterized in that: The relative movement of the light-transmitting member and the probe base includes at least one of the light-transmitting member and the probe base rotating around an axis by a set angle or sliding along a set direction by a set distance.

4. The battery cell testing machine according to claim 1, characterized in that: The probe base is provided with a plurality of air holes, and the air flowing out of the air holes can blow the fragments on the probe base to move.

5. The battery cell testing machine according to any one of claims 1 to 4, characterized in that: It also includes a circumferential driving assembly, which drives the light-transmitting member to rotate to the first position or the second position; wherein, The light-transmitting member at the first position is a position where the light-transmitting member is spaced apart from the probe base and is opposite to the probe base; The light-transmitting member at the second position is a position where the light-transmitting member does not cover the probe on the probe base.

6. The battery cell testing machine according to claim 5, characterized in that: The circumferential drive assembly includes a servo motor and a flip shaft; wherein The flip axis is fixedly connected to the light-transmitting member, and the flip axis is located at the edge of the light-transmitting member; The servo motor drives the flip shaft to rotate to the first position or the second position.

7. The battery cell testing machine according to claim 6, characterized in that: The circumferential drive assembly further includes a transmission component, wherein the transmission component includes a worm wheel and a worm that mesh with each other; wherein, The output shaft of the servo motor is coaxially fixed with the worm; The turning shaft is coaxially fixed with the worm gear.

8. The battery cell testing machine according to any one of claims 1 to 4, characterized in that: It also includes a linear drive assembly, which drives the probe base to slide to a third position or a fourth position; wherein, The probe base at the third position is a position where the probe base is spaced apart from the light-transmitting member; The fourth position of the probe base is a position where the probe on the probe base is covered by the light-transmitting member.

9. The battery cell testing machine according to claim 8, characterized in that: It also includes a main body, on which a slideway is provided; A sliding member located in the slideway is fixed on the probe base, and the sliding member slides in the slideway so that the probe base is in the third position or the fourth position.

10. A battery cell testing system, characterized in that: A battery cell testing machine comprising any one of claims 1 to 9.

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