Battery piece testing device and battery piece manufacturing system

Abstract

The utility model discloses a battery piece testing device and a battery piece manufacturing system, and the device comprises a testing box which is used for placing a to-be-tested battery piece and a standard battery piece, and is provided with a testing lamp which is used for irradiating the to-be-tested battery piece and the standard battery piece; the dustproof cover is located in the test box and used for covering the standard battery piece, a light-transmitting inclined plane is formed on the dustproof cover, an included angle is formed between the light-transmitting inclined plane and the horizontal plane, and the test lamp is suitable for irradiating the standard battery piece from the light-transmitting inclined plane; and the blowing device is provided with an air outlet, and the air outlet directly faces the light-transmitting inclined plane and is used for blowing air to the light-transmitting inclined plane. According to the battery piece testing device provided by the embodiment of the utility model, the cleanliness above the standard battery piece can be ensured, so that the accuracy of short-circuit current detected by the battery piece to be tested is ensured, the testing effect is improved, meanwhile, the automation can be improved, the human interference is reduced, the testing efficiency is improved, the production cost is reduced, the use effect is better, and the application range is wider.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to a cell testing device and a cell manufacturing system having the cell testing device. Background Technology

[0002] After the solar cells are manufactured, they need to undergo an electrical performance test. This involves placing the solar cells in a dark environment and exposing them to sunlight through a xenon lamp to simulate sunlight irradiation. The silicon wafers then generate electricity, and a standard cell also generates electricity synchronously. Each time a solar cell is tested, the xenon lamp flashes once. After the standard cell absorbs the light intensity, it can feed the light intensity information back to the testing software. The testing software then adjusts the light intensity to the corresponding solar cell under test based on the feedback information, and calculates the short-circuit current value of the solar cell under test based on the adjusted light intensity.

[0003] However, during normal production, the surface of the standard sheet is easily affected by dust and debris, which prevents the standard sheet from fully absorbing light intensity, resulting in deviations in the software calculation results. This leads to errors in the short-circuit current detected by the battery cell under test, thus affecting the test results. Manual wiping affects test efficiency and can easily lead to incomplete wiping, indicating room for improvement. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery cell testing device that ensures the cleanliness of the area above the standard battery cell, thereby ensuring the accuracy of the short-circuit current detected by the battery cell under test, improving testing results, ensuring testing efficiency, and reducing production costs.

[0005] A battery cell testing device according to an embodiment of the present invention includes: a testing chamber for placing a battery cell to be tested and a standard battery cell inside the testing chamber, a testing lamp inside the testing chamber for illuminating the battery cell to be tested and the standard battery cell; a dust cover located inside the testing chamber and used to cover the standard battery cell, the dust cover having a light-transmitting inclined surface forming an angle with the horizontal plane, the testing lamp being adapted to illuminate the standard battery cell from the light-transmitting inclined surface; and a blowing device having an air outlet facing the light-transmitting inclined surface and used to blow air onto the light-transmitting inclined surface.

[0006] According to the embodiment of the present invention, the battery cell testing device reduces dust and debris falling onto the standard battery cell by covering it with a dust cover having a light-transmitting slope. Furthermore, a blowing device is provided to blow air onto the light-transmitting slope, ensuring the cleanliness of the area above the standard battery cell. This guarantees the accuracy of the short-circuit current detected by the battery cell under test, improving the testing effect. Simultaneously, it enhances automation, reduces human intervention, increases testing efficiency, lowers production costs, and offers better performance and a wider range of applications.

[0007] According to some embodiments of the present invention, the battery cell testing device includes a dust cover comprising a light-transmitting plate, a first support plate, and two connecting side plates. The top of the light-transmitting plate is connected to the top of the first support plate and the bottoms are spaced apart. The two connecting side plates are distributed opposite to each other and spaced apart between the light-transmitting plate and the first support plate to jointly define a covering space. The standard battery cell is placed in the covering space, and the light-transmitting inclined surface is formed on the light-transmitting plate.

[0008] According to some embodiments of the present invention, in the battery cell testing apparatus, the projection of the light-transmitting plate along the vertical direction covers the standard battery cell.

[0009] According to some embodiments of the present invention, in the battery cell testing apparatus, the light-transmitting plate is made of high-transmittance glass.

[0010] According to some embodiments of the battery cell testing device of this utility model, the angle between the light-transmitting inclined plane and the horizontal plane is α, and satisfies: 30°≤α≤70°.

[0011] According to some embodiments of the present invention, in the battery cell testing device, both the battery cell to be tested and the standard battery cell are placed below the testing lamp;

[0012] The test lamp is adapted to illuminate the light-transmitting inclined surface vertically downwards, or to illuminate the light-transmitting inclined surface in a direction perpendicular to the light-transmitting inclined surface.

[0013] According to some embodiments of the present invention, the battery cell testing device has an air guide shroud at the air outlet. The air guide shroud is flared and is used to guide air to the light-transmitting inclined surface. The centerline of the air guide shroud forms an angle with the light-transmitting inclined surface.

[0014] According to some embodiments of the present invention, in the battery cell testing device, the angle between the centerline of the air guide shroud and the normal of the light-transmitting inclined surface is less than 45°.

[0015] According to some embodiments of the present invention, in the battery cell testing device, both the testing lamp and the blowing device are located above the dust cover;

[0016] And / or, the purging device is provided with a filter element, which is used to filter the gas in the purging device.

[0017] This utility model also proposes a battery cell manufacturing system.

[0018] A battery cell manufacturing system according to an embodiment of the present invention includes a conveying device and a battery cell testing device as described in any one of the above claims, wherein the conveying device is used to convey the battery cell to be tested into the testing chamber.

[0019] The advantages of the battery cell manufacturing system and the battery cell testing device compared to the prior art are the same, and will not be repeated here.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of the battery cell testing device according to an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the dust cover and standard battery cell according to an embodiment of the present utility model;

[0024] Figure 3 This is a structural schematic diagram of the purging device, dust cover, and standard battery cell according to an embodiment of the present utility model.

[0025] Figure label:

[0026] Battery cell testing device 100,

[0027] Test box 1, test lamp 11

[0028] Dust cover 2, light-transmitting plate 21, light-transmitting inclined surface 211, first support plate 22, connecting side plate 23

[0029] Purging device 3, CDA air pipe 31, regulating valve 32, air guide hood 33, air outlet 331, filter element 34.

[0030] 4 cells to be tested, 5 standard cells. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The following is for reference. Figures 1-3 The battery cell testing device 100 according to the present invention can ensure the cleanliness of the area above the standard battery cell 5, thereby ensuring the accuracy of the short-circuit current detected by the battery cell 4 under test, thus improving the testing effect, ensuring testing efficiency, and reducing production costs.

[0035] like Figures 1-3 As shown, a battery cell testing device 100 according to an embodiment of the present invention includes: a testing chamber 1, a dust cover 2, and a purging device 3.

[0036] The test chamber 1 is used to place the battery cell 4 to be tested and the standard battery cell 5. The test chamber 1 is equipped with a test lamp 11, which is used to illuminate the battery cell 4 to be tested and the standard battery cell 5. The dust cover 2 is located inside the test chamber 1 and is used to cover the standard battery cell 5. The dust cover 2 has a light-transmitting inclined surface 211, which forms an angle with the horizontal plane. The test lamp 11 is suitable for illuminating the standard battery cell 5 from the light-transmitting inclined surface 211. The blowing device 3 has an air outlet 331, which is directly opposite the light-transmitting inclined surface 211 and is used to blow air onto the light-transmitting inclined surface 211.

[0037] Specifically, after the appearance defect monitoring, the battery cell 4 to be tested will enter the electrical performance testing stage, which means it will be transported to the battery cell testing device 100. The battery cell testing device 100 is equipped with a test chamber 1. The test chamber 1 is made of opaque material, that is, the inside of the test chamber 1 is a dark environment. The test chamber 1 can be set as a rectangular box or a columnar box, etc., with flexible setting. The test chamber 1 can be equipped with a maintenance port, which can be closed by a plate. The plate is movable relative to the maintenance port, which can ensure the dark environment inside the test chamber 1 during testing. It also allows users to replace and maintain its internal structure, improving the flexibility of use and meeting different needs.

[0038] Furthermore, a test lamp 11 is installed inside the test chamber 1, mounted on the top wall of the test chamber 1. The test lamp 11 can be set as a xenon lamp, whose spectrum is similar to sunlight, allowing it to simulate sunlight for testing. The interior of the test chamber 1 is a dark environment, so all light in the test chamber 1 is emitted by the test lamp 11. The test chamber 1 also contains a battery cell 4 to be tested and a standard battery cell 5, which are placed alternately. The test lamp 11 can shine light on the battery cell 4 to be tested and the standard battery cell 5 respectively, so that the standard battery cell 5 can absorb the light intensity and feed back the light intensity information to the detection software. The detection software can adjust the light to the corresponding battery cell 4 to be tested based on the feedback light intensity information, and then calculate the short-circuit current value corresponding to the battery cell 4 to be tested based on the adjusted light intensity.

[0039] Furthermore, the battery cell testing device 100 is also equipped with a dust cover 2, which is also located inside the testing chamber 1 and covers the standard battery cell 5. The bottom of the dust cover 2 can be sealed and fixed to the bottom wall of the testing chamber 1 with glue or the like. The inside of the dust cover 2 is in a vacuum state. The dust cover 2 forms a light-transmitting inclined surface 211, which can be made of glass or other materials, so that the light from the testing lamp 11 can shine onto the standard battery cell 5 through the light-transmitting inclined surface 211, ensuring the reliability of the illumination of the standard battery cell 5. The light-transmitting inclined surface 211 is set at an angle with the horizontal plane, that is, the light-transmitting inclined surface 211 is tilted, so that when heavy dust or debris falls onto the surface of the light-transmitting inclined surface 211, it will slide down the light-transmitting inclined surface 211 under the action of gravity, so as to ensure the cleanliness of the light-transmitting inclined surface 211 and thus ensure the amount of light illuminating the standard battery cell 5.

[0040] In addition, the cell testing device 100 is also equipped with a blowing device 3. The blowing device 3 can be located entirely inside the test chamber 1 or can extend partially into the test chamber 1. The blowing device 3 has an air outlet 331, which is located at one end of the blowing device 3 inside the test chamber 1. The blowing device 3 can blow air outward through the air outlet 331, and the air outlet 331 is directly opposite the light-transmitting inclined surface 211, so that the blowing device 3 can blow air onto the light-transmitting inclined surface 211. This allows the blowing device 3 to blow off light dust or debris left on the surface of the light-transmitting inclined surface 211, further ensuring the cleanliness of the light-transmitting inclined surface 211, so as to ensure the amount of light irradiating the standard cell 5, thereby ensuring the accuracy of the short-circuit current detected by the cell under test 4, improving the test effect, and eliminating the need for human intervention in the test process, which can improve test efficiency and reduce production costs.

[0041] According to the embodiment of the present invention, the battery cell testing device 100 reduces dust and debris falling onto the standard battery cell 5 by covering the standard battery cell 5 with a dust cover 2 having a light-transmitting inclined surface 211. Furthermore, a blowing device 3 is provided to blow air onto the light-transmitting inclined surface 211, thereby ensuring the cleanliness of the area above the standard battery cell 5. This ensures the accuracy of the short-circuit current detected by the battery cell 4 under test, improving the testing effect. Simultaneously, it enhances automation, reduces human intervention, increases testing efficiency, lowers production costs, and has better performance and wider applicability.

[0042] In some embodiments, the dust cover 2 is configured to include a light-transmitting plate 21, a first support plate 22 and two connecting side plates 23. The top of the light-transmitting plate 21 is connected to the top of the first support plate 22 and the bottoms are spaced apart. The two connecting side plates 23 are distributed opposite to each other and spaced apart between the light-transmitting plate 21 and the first support plate 22 to jointly define the covering space. The standard battery cell 5 is placed in the covering space, and the light-transmitting inclined surface 211 is formed on the light-transmitting plate 21.

[0043] Specifically, the dust cover 2 is installed inside the test chamber 1 and covers the standard battery cell 5, and as... Figure 2 As shown, the dust cover 2 is provided with a light-transmitting plate 21, a first support plate 22, and connecting side plates 23. The light-transmitting plate 21 is inclined and is a rectangular plate. The first support plate 22 is also rectangular. The upper end of the light-transmitting plate 21 is connected to the upper end of the first support plate 22, and the bottom of the light-transmitting plate 21 is spaced apart from the bottom of the first support plate 22. There are two connecting side plates 23, and both connecting side plates 23 are triangular. The two sides of the first support plate 22 are connected to the two connecting side plates 23 respectively, and the other side of the two connecting side plates 23 is connected to the two sides of the light-transmitting plate 21 respectively, so that the light-transmitting plate 21, the first support plate 22, and the two connecting side plates 23 can jointly define the covering space.

[0044] Furthermore, one end of the enclosure space is open, allowing the standard battery cell 5 to be placed inside the enclosure space through the open side. When the dust cover 2 is placed over the standard battery cell 5, the user can use glue or similar materials to seal the opening of the enclosure space to the bottom wall of the test chamber 1, ensuring a vacuum state within the enclosure space and thus guaranteeing test accuracy. The light-transmitting slope 211 is formed on the light-transmitting plate 21, meaning that either a portion of the light-transmitting plate 21 can be provided with the light-transmitting slope 211, or the entire light-transmitting plate 21 can be provided with the light-transmitting slope 211, allowing at least a portion of the light-transmitting plate 21 to transmit light. Since the light-transmitting plate 21 is tilted, the light-transmitting slope 211 formed on the light-transmitting plate 21 is also tilted, so that the light-transmitting slope 211 can tilt towards the test lamp 11, ensuring the reliability of irradiation of the standard battery cell 5.

[0045] In some embodiments, the projection of the light-transmitting plate 21 along the vertical direction covers the standard battery cell 5.

[0046] Specifically, such as Figure 2 As shown, the light-transmitting plate 21 and the first support plate 22 are both rectangular plates, and the connecting side plate 23 is a triangular plate, so that the first support plate 22, the light-transmitting plate 21 and the two connecting side plates 23 can jointly define a triangular columnar covering space, and the light-transmitting plate 21 is connected to the upper end of the first support plate 22 and the two connecting side plates 23. That is, when the dust cover 2 is placed above the standard battery cell 5, the light-transmitting plate 21 is located above the standard battery cell 5.

[0047] Furthermore, a light-transmitting inclined surface 211 is formed on the light-transmitting plate 21, and the test lamp 11 is adapted to irradiate the standard battery cell 5 from the light-transmitting inclined surface 211. The projection of the light-transmitting plate 21 along the vertical direction covers the standard battery cell 5, that is, the projection of the light-transmitting inclined surface 211 along the vertical direction covers the standard battery cell 5, so that the light emitted by the test lamp 11 can enter the covering space from all parts of the light-transmitting inclined surface 211 and then irradiate the standard battery cell 5, ensuring the reliability of irradiation of all parts of the standard battery cell 5, so as to ensure the absorption effect of the standard battery cell 5 on the light intensity, and thus ensuring the accuracy of the test.

[0048] In some embodiments, the light-transmitting plate 21 is made of high-transmittance glass.

[0049] Specifically, the test lamp 11 is adapted to illuminate the standard battery cell 5 from the light-transmitting inclined surface 211, and the light-transmitting inclined surface 211 is formed on the light-transmitting plate 21. That is, the light emitted by the test lamp 11 can be transmitted to the standard battery cell 5 through the light-transmitting plate 21. The light-transmitting plate 21 can be made of high-transmittance glass, that is, the light transmittance of the light-transmitting plate 21 is high, so that the light emitted by the test lamp 11 can be transmitted to the standard battery cell 5 through the light-transmitting plate 21. This can reduce the loss of light during the propagation process, so as to ensure that the amount of light emitted is the same as the amount of light absorbed by the standard battery cell 5, thereby improving the test accuracy.

[0050] In some embodiments, the angle between the light-transmitting inclined plane 211 and the horizontal plane is α, and satisfies: 30°≤α≤70°.

[0051] Specifically, the light-transmitting inclined surface 211 is positioned above the standard solar cell 5, and the light-transmitting inclined surface 211 is inclined so that when heavier dust or debris falls onto the surface of the light-transmitting inclined surface 211, it will slide down the light-transmitting inclined surface 211 under the action of gravity, ensuring the cleanliness of the surface of the light-transmitting inclined surface 211. The angle between the light-transmitting inclined surface 211 and the horizontal plane is set to α, and satisfies: 30°≤α≤70°, that is, the angle α between the light-transmitting inclined surface 211 and the horizontal plane can be set to 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65° or 70°, etc.

[0052] Thus, setting the angle α between the light-transmitting inclined surface 211 and the horizontal plane to be greater than or equal to 30° ensures the inclination of the light-transmitting inclined surface 211. This ensures that when dust or debris falls onto the surface of the light-transmitting inclined surface 211, it can slide down the light-transmitting inclined surface 211 under the action of gravity, ensuring the reliability of self-cleaning of dust or debris. Furthermore, setting the angle α between the light-transmitting inclined surface 211 and the horizontal plane to be less than or equal to 70° avoids the light-transmitting inclined surface 211 covering the standard solar cell 5 in the vertical direction being too small, resulting in insufficient light irradiation to the standard solar cell 5. This ensures that the standard solar cell 5 absorbs sufficient light intensity, thereby ensuring the accuracy of the test.

[0053] In some embodiments, the battery cell 4 to be tested and the standard battery cell 5 are both placed below the test lamp 11, wherein the test lamp 11 is adapted to illuminate the light-transmitting inclined surface 211 vertically downward or in a direction perpendicular to the light-transmitting inclined surface 211.

[0054] Specifically, the battery cell under test 4, the standard battery cell 5, and the test lamp 11 are all located inside the test chamber 1. The test lamp 11 is installed on the top wall of the test chamber 1, and the battery cell under test 4 and the standard battery cell 5 are placed on the bottom wall of the test chamber 1, so that the test lamp 11 is located above the standard battery cell 5 and the battery cell under test 4, so that the light from the test lamp 11 can shine on the battery cell under test 4 and the standard battery cell 5 respectively, ensuring the reliability of the test lamp 11.

[0055] Furthermore, the standard battery cell 5 can be positioned below the test lamp 11 or on the side of the test lamp 11 along the vertical direction. When the standard battery cell 5 is positioned below the test lamp 11, the battery cell 4 to be tested is positioned on the side of the test lamp 11 along the vertical direction. When the standard battery cell 5 is positioned on the side of the test lamp 11 along the vertical direction, the battery cell 4 to be tested is positioned below the test lamp 11. When the standard battery cell 5 is positioned below the test lamp 11, the test lamp 11 is adapted to illuminate the light-transmitting inclined surface 211 vertically downwards. When the standard battery cell 5 is positioned on the side of the test lamp 11 along the vertical direction, the test lamp 11 is adapted to illuminate the light-transmitting inclined surface 211 in a direction perpendicular to the light-transmitting inclined surface 211. In this embodiment, the battery cell 4 to be tested is positioned below the test lamp 11, and the standard battery cell 5 is positioned on the side of the test lamp 11 along the vertical direction.

[0056] In this way, the light emitted by the test lamp 11 can shine vertically downwards onto the battery cell 4 under test, and the test lamp 11 can also shine on the light-transmitting inclined surface 211 in a direction perpendicular to the light-transmitting inclined surface 211, so that the light emitted by the test lamp 11 onto the light-transmitting inclined surface 211 can be vertically absorbed into the light-transmitting plate 21, which can avoid the light refraction caused by the light-transmitting plate 21, affecting the amount of light shining onto the standard battery cell 5, and thus ensuring the accuracy of the test.

[0057] In some embodiments, an air guide shroud 33 is provided at the air outlet 331. The air guide shroud 33 is flared and is used to guide air to the light-transmitting inclined surface 211. The center line of the air guide shroud 33 forms an angle with the light-transmitting inclined surface 211.

[0058] Specifically, the purging device 3 has an air outlet 331 for blowing air onto the light-transmitting inclined surface 211 to perform secondary cleaning of the light-transmitting inclined surface 211 and improve test accuracy. An air guide shroud 33 is provided at the air outlet 331, so that the airflow flowing to the air outlet 331 can flow to the outside along the air guide shroud 33. The air guide shroud 33 is set in a wide-mouth shape, that is, the opening size of the end of the air guide shroud 33 near the air outlet 331 is smaller, and the opening size of the end away from the air outlet 331 is larger, thereby increasing the air outlet area of ​​the air outlet 331 through the air guide shroud 33.

[0059] Furthermore, the air guide shroud 33 can be opened towards the light-transmitting inclined surface 211, thereby allowing the air guide shroud 33 to guide airflow towards the light-transmitting inclined surface 211. The centerline of the air guide shroud 33 forms an angle with the light-transmitting inclined surface 211, that is, the direction of the airflow guided by the air guide shroud 33 also forms an angle with the light-transmitting inclined surface 211. This allows the airflow guided by the air guide shroud 33 to blow dust or debris on the light-transmitting inclined surface 211 away from the air outlet 331 and down to the bottom of the light-transmitting inclined surface 211, thus ensuring the reliability of cleaning the light-transmitting inclined surface 211. Moreover, the air guide shroud 33 is set in a wide-mouth shape, which can guide airflow to all parts of the light-transmitting inclined surface 211, ensuring the reliability of cleaning all parts of the light-transmitting inclined surface 211.

[0060] In addition, the battery cell 4 under test is positioned on the side away from the air outlet 331, which can prevent the airflow from blowing debris or dust on the light-transmitting inclined surface 211 onto the surface of the battery cell 4 under test, thus ensuring the accuracy of the test.

[0061] In some embodiments, the angle between the centerline of the air guide shroud 33 and the normal of the light-transmitting inclined surface 211 is less than 45°.

[0062] Specifically, an air guide hood 33 is provided at the air outlet 331 to guide air to the light-transmitting inclined surface 211, and the angle between the center line of the air guide hood 33 and the normal of the light-transmitting inclined surface 211 is less than 45°, that is, the angle between the center line of the air guide hood 33 and the normal of the light-transmitting inclined surface 211 can be set to 35°, 30°, 25°, 20°, 15°, 10°, 5° or 0°, etc.

[0063] When the angle between the centerline of the air guide shroud 33 and the normal of the light-transmitting inclined surface 211 is set to 0°, the centerline of the air guide shroud 33 is set perpendicular to the light-transmitting inclined surface 211, so that the air guide shroud 33 is open towards the light-transmitting inclined surface 211. In this way, the airflow guided by the air guide shroud 33 can be directly delivered to the light-transmitting inclined surface 211, reducing the energy loss of the airflow during the delivery process, thereby improving the cleaning effect of the airflow on the light-transmitting inclined surface 211 and ensuring the accuracy of the test.

[0064] In some embodiments, the test lamp 11 and the purging device 3 are both located above the dust cover 2.

[0065] Specifically, the dust cover 2 is placed above the standard battery cell 5, the light-transmitting plate 21 is also placed above the standard battery cell 5, and the test lamp 11 can be placed above the dust cover 2, that is, the test lamp 11 can illuminate the standard battery cell 5 from above through the light-transmitting plate 21. At the same time, the test lamp 11 is also placed above the battery cell 4 to be tested, to ensure the consistency of the test environment and to ensure the accuracy and rigor of the test results.

[0066] In addition, the blowing device 3 can also be set above the dust cover 2, that is, the air outlet 331 can blow air from above to blow away the debris or dust on the light-transmitting plate 21, thereby ensuring that there is no obstruction between the standard battery cell 5 and the test lamp 11, so as to ensure the accuracy of the test. Furthermore, by setting both the test lamp 11 and the blowing device 3 above, the blowing device 3 can be prevented from obstructing the test lamp 11, thus ensuring the reliability of the test lamp 11.

[0067] In some other embodiments, a filter element 34 is provided inside the purging device 3 for filtering the gas inside the purging device 3.

[0068] Specifically, the blowing device 3 can blow air onto the light-transmitting inclined surface 211 of the dust cover 2 to ensure the cleanliness of the light-transmitting inclined surface 211. The blowing device 3 is equipped with a filter element 34 inside, which can be set as gas filter cotton, etc., to filter the gas inside the blowing device 3 to ensure the cleanliness of the gas. This ensures that the airflow delivered to the light-transmitting inclined surface 211 is free of impurities, improves the cleaning effect on the light-transmitting inclined surface 211, and also avoids pollution to the environment inside the test chamber 1.

[0069] In actual setup, the purging device 3 can be equipped with a CDA pipe 31 and a regulating valve 32. The CDA pipe 31 passes through the side wall of the test chamber 1, with one end connected to the outside of the test chamber 1 and the other end extending into the test chamber 1. The air outlet 331 is located at the end of the CDA pipe 31 located inside the test chamber 1, and the air guide shroud 33 is also installed at the end of the CDA pipe 31 located inside the test chamber 1. The regulating valve 32 is installed in the CDA pipe 31 and can close or open the CDA pipe 31 to control the operating status of the purging device 3. The filter element 34 is also located inside the CDA pipe 31, which improves the reliability of the purging device 3. The structure is simple, the setup cost is low, and the use is convenient.

[0070] In addition, the CDA air tube 31, regulating valve 32 and air guide shroud 33 can all be made of black and non-reflective material to avoid affecting the light emitted by the test lamp 11 and improve the accuracy of the test.

[0071] This utility model also proposes a battery cell manufacturing system.

[0072] The battery cell manufacturing system according to the present invention includes a conveying device and a battery cell testing device 100 as described above. The conveying device is used to convey the battery cell 4 to be tested into the testing chamber 1.

[0073] Specifically, the cell manufacturing system can manufacture and test the cell 4 to be tested. The conveying device is equipped with a conveyor belt, and the cell 4 to be tested can be placed on the conveyor belt. The test box 1 can be placed on the conveyor belt, so that the conveyor belt can transport the cell 4 to be tested into the test box 1 for testing. After the test is completed, the conveyor belt can also transport the cell to be tested outside the test box 1 so that the next cell 4 to be tested can be transported into the test box 1, thereby improving testing efficiency, improving testing automation, and ensuring testing results.

[0074] According to the battery cell manufacturing system of this utility model embodiment, by covering the standard battery cell 5 with a dust cover 2 having a light-transmitting inclined surface 211, the amount of dust and debris falling onto the standard battery cell 5 can be reduced. Furthermore, a blowing device 3 is provided to blow air onto the light-transmitting inclined surface 211, thereby ensuring the cleanliness of the area above the standard battery cell 5. This ensures the accuracy of the short-circuit current detected by the battery cell 4 under test, improves the testing effect, and at the same time, improves automation, reduces human intervention, increases testing efficiency, reduces production costs, and has better performance and a wider range of applications.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0076] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery cell testing device, characterized in that, include: A test chamber, wherein the test chamber is used to place the battery cell to be tested and the standard battery cell, and the test chamber is equipped with a test lamp, which is used to illuminate the battery cell to be tested and the standard battery cell; A dust cover is located inside the test chamber and is used to cover the standard battery cell. The dust cover has a light-transmitting slope that forms an angle with the horizontal plane. The test lamp is adapted to illuminate the standard battery cell from the light-transmitting slope. A purging device having an air outlet facing the light-transmitting inclined surface and used to blow air onto the light-transmitting inclined surface.

2. The battery cell testing apparatus according to claim 1, characterized in that, The dust cover is constructed to include a light-transmitting plate, a first support plate, and two connecting side plates. The top of the light-transmitting plate is connected to the top of the first support plate and the bottoms are spaced apart. The two connecting side plates are distributed opposite to each other and spaced apart between the light-transmitting plate and the first support plate to jointly define the covering space. The standard battery cell is placed in the covering space, and the light-transmitting inclined surface is formed on the light-transmitting plate.

3. The battery cell testing apparatus according to claim 2, characterized in that, The projection of the light-transmitting plate along the vertical direction covers the standard battery cell.

4. The battery cell testing apparatus according to claim 2, characterized in that, The light-transmitting panel is made of high-transmittance glass.

5. The battery cell testing apparatus according to any one of claims 1-4, characterized in that, The angle between the light-transmitting inclined plane and the horizontal plane is α, and satisfies: 30°≤a≤70°.

6. The cell testing apparatus according to any one of claims 1-4, characterized in that, Both the battery cell to be tested and the standard battery cell are placed below the test lamp; The test lamp is adapted to illuminate the light-transmitting inclined surface vertically downwards, or to illuminate the light-transmitting inclined surface in a direction perpendicular to the light-transmitting inclined surface.

7. The cell testing apparatus according to any one of claims 1-4, characterized in that, An air guide hood is provided at the air outlet. The air guide hood is flared and is used to guide air to the light-transmitting inclined surface. The center line of the air guide hood forms an angle with the light-transmitting inclined surface.

8. The battery cell testing apparatus according to claim 7, characterized in that, The angle between the centerline of the air guide shroud and the normal of the light-transmitting inclined surface is less than 45°.

9. The battery cell testing apparatus according to any one of claims 1-4, characterized in that, Both the test lamp and the purging device are located above the dust cover; And / or, the purging device is provided with a filter element, which is used to filter the gas in the purging device.

10. A battery cell manufacturing system, characterized in that, The device includes a conveying device and a cell testing apparatus according to any one of claims 1-9, wherein the conveying device is used to convey the cell to be tested into the test chamber.

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