Device for cleaning battery cell liquid injection hole

Abstract

The utility model relates to the technical field of battery production and manufacturing, and provides a device for cleaning a battery cell liquid injection hole, and the device comprises a fixing frame for fixing a battery cell, the fixing frame can drive the battery cell to rotate around a first axis and a second axis respectively, and the first axis is perpendicular to the second axis; the image sensor is used for shooting a liquid injection hole of the battery cell; the laser cleaning module and the fixing frame can get close to each other or get away from each other in the first direction, the laser cleaning module or the fixing frame can move in the second direction, the first direction is perpendicular to the first axis, and the second direction is perpendicular to the first direction. The upper step face, the lower step face and the side wall of the liquid injection hole can be cleaned, the cleaning mode is efficient and green, the cleaning effect is good, and the risks of explosion points and perforation after sealing nail welding can be greatly reduced.

Description

Technical Field

[0001] The present application relates to the technical field of battery production and manufacturing, and in particular to a device for cleaning a liquid injection hole of a battery cell. Background Art

[0002] After the battery cell is filled with liquid once, it needs to be formed at high temperature. The electrolyte remaining in the injection hole will form crystals after being exposed to high temperature. The crystals are very difficult to clean. The presence of crystals will affect the welding effect of the sealing pins (used to seal the injection hole), and it is easy to cause explosion points (explosion points) and perforations after the sealing pins are welded. The explosion points and perforations will affect the air tightness of the battery cell and the mechanical strength of the battery cell shell to resist internal expansion, increasing the risk of leakage and water vapor intrusion during the use of the battery cell. In order to ensure a good welding effect, the electrolyte remaining on the injection hole needs to be removed before welding the sealing pin. The existing removal methods include manual removal, dry ice removal, laser removal, etc., but they all have certain limitations. For example, it is difficult to completely remove it manually and the removal effect is difficult to achieve consistent results. When using DMC plus non-woven fabric for cleaning, the step hole side wall of the injection hole cannot be cleaned. The amount of DMC used is high and the cost is not environmentally friendly; dry ice blasting requires the protection of the explosion-proof membrane from being blown open or damaged; traditional laser cleaning can only clean one step surface of the injection hole, and cannot take into account the upper and lower step surfaces of the injection hole, and the side wall of the injection hole cannot be cleaned. The above factors have seriously affected the cleaning effect. Utility Model Content

[0003] In order to solve the above problems, the present application provides a device for cleaning the liquid injection hole of the battery cell, which has an ingenious design and a simple structure, can clean the upper and lower step surfaces of the liquid injection hole and the side wall of the liquid injection hole, and the cleaning method is efficient and green, with good cleaning effect, which can greatly reduce the risk of explosion points and perforation after the sealing nail is welded. The technical solution adopted in the present application is as follows:

[0004] A device for cleaning a battery cell injection hole, comprising:

[0005] A fixing frame, used for fixing the battery cell, the fixing frame can drive the battery cell to rotate around a first axis and a second axis respectively, the first axis and the second axis are perpendicular to each other; an image sensor, used for photographing the injection hole of the battery cell; a laser cleaning module, the laser cleaning module and the fixing frame can approach or move away from each other along a first direction, the laser cleaning module or the fixing frame can move along a second direction, the first direction is perpendicular to the first axis, and the second direction is perpendicular to the first direction.

[0006] By designing the fixing frame to be able to drive the battery cell to rotate around the first axis and the second axis respectively, the laser cleaning module can not only clean the upper and lower step surfaces of the injection hole, but also the battery cell will be tilted after the first axis rotates, and the injection hole will tilt with the battery cell, and the laser beam will hit the side wall of the injection hole, thereby cleaning the side wall of the injection hole. In addition, the laser cleaning method is efficient and green, and the cleaning effect is good. The above effects can greatly reduce the risk of explosion points and perforations after the sealing pins are welded, improve the air tightness of the battery cell and the mechanical strength of the battery cell shell to resist internal expansion, and reduce the risk of leakage and water vapor entering during the use of the battery cell.

[0007] In some embodiments, the fixed frame includes a support, a carrier, a clamp, a first driving device, and a second driving device; the carrier is rotatably arranged on the support, and the first driving device is used to drive the carrier to rotate around a first axis; the second driving device is installed on the carrier, and the clamp is installed at the output end of the second driving device, the second driving device is used to drive the clamp to rotate around a second axis, and the clamp is used to clamp the battery cell.

[0008] By arranging the second driving device on the carrier, when the laser beam hits the side wall of the injection hole, it is only necessary to control the second driving device to drive the fixture to rotate around the second axis without adjusting other parameters, so that the side wall portion of the injection hole at the same depth can be cleaned. This control method is simple. When cleaning the side wall portion of the injection hole at the same depth, there is no need to adjust the distance between the laser cleaning module and the side wall of the injection hole. This can greatly simplify the algorithm for controlling the distance between the laser cleaning module and the side wall of the injection hole when cleaning the side wall of the injection hole.

[0009] In some embodiments, there are two supports, the two supports are arranged opposite to each other along the first axis, and two ends of the carrier are correspondingly arranged on the two supports.

[0010] By setting the carrier on two oppositely arranged supports, the stability of the carrier can be ensured and the risk of the carrier shaking during rotation can be reduced, thereby reducing the fluctuation of the position of the battery cell injection hole, which is beneficial to the control of the distance between the laser cleaning module and the injection hole.

[0011] In some embodiments, there are two first driving devices, and two ends of the carrier are correspondingly connected to the two first driving devices.

[0012] By providing two first driving devices, the two first driving devices can share the force required to drive the carrier, reduce the burden of the first driving devices, ensure the stable operation of the first driving devices, and further ensure the smooth rotation of the carrier.

[0013] In some embodiments, the carrier is U-shaped.

[0014] By setting the carrier to be U-shaped, the overall height of the fixing frame and the battery cell after the battery cell is fixed to the fixture can be reduced, which facilitates the installation and removal of the battery cell and saves space in the height direction.

[0015] In some embodiments, a negative pressure dust removal module is further included, wherein the negative pressure dust removal module is provided with a wind shield, and the wind shield faces the injection hole of the battery cell. By providing the negative pressure dust removal module, dust and gas generated during the cleaning process of the injection hole can be removed.

[0016] In some embodiments, the image sensor is a CCD camera. By selecting the image sensor as a CCD camera, the accuracy of acquiring the image can be ensured.

[0017] In some embodiments, the laser cleaning module is a carbon dioxide laser.

[0018] In some embodiments, it also includes a first electric slide and a second electric slide, the first electric slide is installed at the moving end of the second electric slide, the laser cleaning module is installed at the moving end of the first electric slide, the moving direction of the moving end of the first electric slide is a first direction, and the moving direction of the moving end of the second electric slide is a second direction.

[0019] By providing the first electric slide and the second electric slide, the control accuracy of the movement of the laser cleaning module can be ensured.

[0020] In some embodiments, the first rotation axis is parallel to the second direction.

[0021] By arranging the first axis and the second direction to be parallel to each other and utilizing the layout of the components in the entire device, the space occupied by the entire device can be saved.

[0022] The present application provides a device for cleaning a battery cell injection hole, which has at least one of the following beneficial effects:

[0023] 1. The present application provides a device for cleaning the injection hole of a battery cell. By designing the fixing frame to be able to drive the battery cell to rotate around the first axis and the second axis respectively, the laser cleaning module can not only clean the upper and lower step surfaces of the injection hole, but also the battery cell will be tilted after the first axis rotates. The injection hole tilts with the battery cell, and the laser beam will hit the side wall of the injection hole, thereby cleaning the side wall of the injection hole. In addition, the laser cleaning method is efficient and green, and the cleaning effect is good. The above effects can greatly reduce the risk of explosion points and perforations after the sealing pins are welded, improve the air tightness of the battery cell and the mechanical strength of the battery cell shell to resist internal expansion, and reduce the risk of leakage and water vapor entering during the use of the battery cell.

[0024] 2. The present application provides a device for cleaning the liquid injection hole of a battery cell. By arranging a second driving device on a carrier, when the laser beam hits the side wall of the liquid injection hole, it is only necessary to control the second driving device to drive the clamp to rotate around the second axis without adjusting other parameters, so that the side wall portion of the injection hole at the same depth can be cleaned. This control method is simple. When cleaning the side wall portion of the injection hole at the same depth, there is no need to adjust the distance between the laser cleaning module and the side wall of the injection hole, which can greatly simplify the algorithm for controlling the distance between the laser cleaning module and the side wall of the injection hole when cleaning the side wall of the injection hole.

[0025] 3. The present application provides a device for cleaning the liquid injection hole of a battery cell. By setting the carrier on two oppositely arranged supports, the stability of the carrier can be ensured, and the risk of the carrier shaking during rotation can be reduced, thereby reducing the fluctuation of the position of the battery cell liquid injection hole, which is beneficial to the control of the distance between the laser cleaning module and the liquid injection hole.

[0026] 4. The present application provides a device for cleaning a liquid injection hole of a battery cell. By setting two first driving devices, the two first driving devices can share the force required to drive the carrier, reduce the burden of the first driving device, ensure the stable operation of the first driving device, and further ensure the smooth rotation of the carrier.

[0027] 5. The present application provides a device for cleaning the liquid injection hole of a battery cell. By setting the carrier to be U-shaped, the overall height of the fixing frame and the battery cell can be reduced after the battery cell is fixed to the clamp, thereby facilitating the installation and removal of the battery cell and saving space in the height direction.

[0028] 6. The present application provides a device for cleaning the liquid injection hole of a battery cell. By setting a negative pressure dust removal module, the dust and gas generated during the cleaning process of the liquid injection hole can be removed.

[0029] 7. The present application provides a device for cleaning a liquid injection hole of a battery cell, which can ensure the accuracy of image acquisition by selecting a CCD camera as the image sensor.

[0030] 8. The present application provides a device for cleaning a liquid injection hole of a battery cell, which can ensure the control accuracy of the movement of a laser cleaning module by setting a first electric slide and a second electric slide.

[0031] 9. The present application provides a device for cleaning a liquid injection hole of a battery cell. By setting the first axis and the second direction to be parallel to each other and utilizing the layout of the components in the entire device, the space occupied by the entire device can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The following will explain the preferred embodiment in a clear and understandable manner with reference to the accompanying drawings, and further explain the above characteristics, technical features, advantages and implementation methods of a device for cleaning a battery cell injection hole:

[0033] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0034] Figure 2 yes Figure 1 A front view of an embodiment;

[0035] Figure 3 is a schematic diagram of the structure of the fixing frame in the embodiment of the present application;

[0036] Figure 4 This is a schematic diagram of a laser cleaning module cleaning a step surface of a liquid injection hole in an embodiment of the present application;

[0037] Figure 5 It is a schematic diagram of the laser cleaning module cleaning the side wall of the injection hole in an embodiment of the present application.

[0038] Description of Figure Numbers:

[0039] Fixed frame 1, battery cell 2, first axis 3, second axis 4, image sensor 5, injection hole 6, laser cleaning module 7, first direction 8, second direction 9, support 10, carrier 11, clamp 12, first driving device 13, second driving device 14, wind cover 15, first electric slide 16, second electric slide 17, laser beam 18. DETAILED DESCRIPTION

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0041] In order to simplify the drawings, only the parts related to the present application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0042] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0043] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0045] refer to Figure 1-Figure 3 The present application provides a device for cleaning a liquid injection hole of a battery cell, comprising: a fixing frame 1, an image sensor 5 and a laser cleaning module 7, wherein the fixing frame 1 comprises a support 10, a carrier 11, a fixture 12, a first driving device 13 and a second driving device 14; the carrier 11 is rotatably arranged on the support 10, and the first driving device 13 can drive the carrier 11 to rotate around a first axis 3; the second driving device 14 is installed on the carrier 11, and the fixture 12 is installed at the output end of the second driving device 14, and the second driving device 14 can drive the fixture 12 to rotate around a second axis 4, and the first axis 3 and the second axis 4 are connected. The axes 4 are perpendicular to each other, and the clamp 12 is used to clamp the battery cell 2; the laser cleaning module 7 is located above the fixed frame 1, and is moved by the first electric slide 16 and the first electric slide 16. The first electric slide 16 is installed at the moving end of the first electric slide 16, and the laser cleaning module 7 is installed at the moving end of the first electric slide 16. The moving direction of the moving end of the first electric slide 16 is defined as a first direction 8, and the moving direction of the moving end of the first electric slide 16 is defined as a second direction 9. The first direction 8 is perpendicular to the first axis 3, and the second direction 9 is perpendicular to the first direction 8.

[0046] The cleaning process of the present device is described below by way of example: after the battery cell 2 is fixed to the fixture 12, the axis of the injection hole 6 coincides with the second axis 4, the first direction 8 is parallel to the second axis 4, the opening of the injection hole 6 faces upward, and the laser beam 18 emitted by the laser cleaning module 7 is perpendicular to the step surface of the injection hole 6, which can be an upper step surface or a lower step surface, as shown in FIG. Figure 4, taking the upper step surface as an example, at this time, the injection hole 6 is controlled to rotate around the second axis 4, and the laser beam 18 will clean the portion of the upper step surface that is the same length from the axis of the injection hole 6, that is, the cleaning track of the laser beam 18 on the upper step surface is a circular ring (the laser beam 18 has a certain width), and the center of the circular ring is located on the axis of the injection hole 6. By controlling the second electric slide 17, the laser cleaning module 7 can be moved along the second direction 9, thereby adjusting the distance between the laser beam 18 and the axis of the injection hole 6, that is, the size of the circular ring representing the cleaning track of the laser beam 18 is adjusted, and then the laser cleaning module 7 can complete the cleaning of the entire upper step surface.

[0047] The image sensor 5 can obtain image information of the injection hole 6, including the size of the upper and lower step surfaces of the injection hole 6, the depth of the injection hole 6, the cleaning effect of the injection hole 6, and other information. This information is used to control the relative movement between the laser cleaning module 7 and the injection hole 6, so as to ensure the cleaning efficiency and effect of the laser cleaning module 7 on the injection hole 6. For example: after the information that the cleaning of the upper step surface is completed is obtained through the image sensor 5, the laser cleaning module 7 moves along the second direction 9 by controlling the second electric slide 17, so that the laser beam 18 hits the lower step surface of the injection hole 6. By controlling the first electric slide 16, the laser cleaning module 7 moves along the first direction 8, so that the distance between the laser cleaning module 7 and the lower step surface reaches a suitable distance, that is, the focus of the laser beam 18 is located on the lower step surface. It can be understood that when the distance between the laser cleaning module 7 and the lower step surface is controlled within a suitable range, the cleaning process of the lower step surface is the same as the cleaning process of the upper step surface, which will not be repeated here.

[0048] The above description describes the cleaning process of the upper and lower step surfaces of the injection hole 6. Figure 1 and Figure 5 , the cleaning process of the side wall of the injection hole 6 is exemplarily described: by controlling the first driving device 13 to drive the carrier 11 to rotate around the first axis 3, the injection hole 6 is tilted, and the axis of the injection hole 6 coincides with the second axis 4. By controlling the second electric slide 17, the laser cleaning module 7 can be moved along the second direction 9, so that the laser beam 18 hits the side wall of the injection hole 6, and the distance between the focus of the laser beam 18 and the side wall of the injection hole 6 is adjusted by controlling the first electric slide 16 to drive the laser cleaning module 7 to move along the first direction 8. Figure 1 , Figure 2In other words, it is to adjust the height of the laser cleaning module 7 in the vertical direction. When the focus of the laser beam 18 and the side wall of the injection hole 6 reach a suitable distance, the injection hole 6 is controlled to rotate around the second rotating shaft 4, so that the side wall part of the same depth of the injection hole 6 can be cleaned. It can be understood that, unlike the cleaning of the step surface of the injection hole 6, the cleaning trajectory of the laser beam 18 on the side wall of the injection hole 6 is a cylinder (the laser beam 18 has a certain width), and the axis of this cylinder is the axis of the injection hole 6. By controlling the second electric slide 17, the laser cleaning module 7 can be moved along the second direction 9, so that the laser beam 18 hits the side wall of the injection hole 6 at different depths, and finally completes the cleaning of the side wall of the injection hole 6. It can be understood that if you want to achieve a better cleaning effect, you need to control the distance between the focus of the laser beam 18 and the part to be cleaned, that is, you need to control the amount of defocus.

[0049] The present application designs the fixing frame 1 to be able to drive the battery cell 2 to rotate around the first axis 3 and the second axis 4 respectively, so that the laser cleaning module 7 can not only clean the upper and lower step surfaces of the injection hole 6, but also the battery cell 2 will be tilted after the first axis 3 rotates, and the injection hole 6 will tilt with the battery cell 2, and the laser beam 18 will hit the side wall of the injection hole 6, thereby cleaning the side wall of the injection hole 6. In addition, the laser cleaning method is efficient and green, and the cleaning effect is good. The above effects can greatly reduce the risk of explosion points and perforations after the sealing nails are welded, improve the airtightness of the battery cell 2 and the mechanical strength of the battery cell 2 shell to resist internal expansion, and reduce the risk of leakage and water vapor entering during the use of the battery cell 2.

[0050] It is worth noting that reference Figure 1 , Figure 3 , Figure 5 , the second driving device 14 is arranged on the carrier 11, and when the laser beam 18 hits the side wall of the injection hole 6, it is only necessary to control the second driving device 14 to drive the clamp 12 to rotate around the second axis 4, without adjusting other parameters, so that the side wall part of the injection hole 6 at the same depth can be cleaned. This control method is simple. When cleaning the side wall part of the injection hole 6 at the same depth, there is no need to adjust the distance between the laser cleaning module 7 and the side wall of the injection hole 6, which can greatly simplify the algorithm for controlling the distance between the laser cleaning module 7 and the side wall of the injection hole 6 when cleaning the side wall of the injection hole 6.

[0051] The above embodiments are described on the premise that the axis of the injection hole 6 coincides with the second axis 4. When the axis of the injection hole 6 coincides with the second axis 4, the relative position of the injection hole 6 and the laser cleaning module 7 is easy to adjust, that is, the algorithm for adjusting the relative position of the injection hole 6 and the laser cleaning module 7 is simple. It is easy to understand that in other embodiments, the axis of the injection hole 6 does not coincide with the second axis 4. At this time, if the injection hole 6 is to be cleaned, the relative position of the injection hole 6 and the laser cleaning module 7 needs to be constantly adjusted, that is, the algorithm for adjusting the relative position of the injection hole 6 and the laser cleaning module 7 is complex.

[0052] It is understandable that when adjusting the relative position of the injection hole 6 and the laser cleaning module 7, it can be achieved by controlling the movement of the laser cleaning module 7, or by controlling the movement of the fixing frame 1. For example, when the laser cleaning module 7 cannot move along the first direction 8 or the second direction 9, the relative position of the two can be adjusted by controlling the movement of the fixing frame 1.

[0053] refer to Figure 1-Figure 3 In one embodiment, there are two supports 10, the two supports 10 are arranged oppositely along the first axis 3, and the two ends of the carrier 11 are correspondingly arranged on the two supports 10. By arranging the carrier 11 on the two oppositely arranged supports 10, the stability of the carrier 11 can be ensured, and the risk of shaking of the carrier 11 during rotation can be reduced, thereby reducing the fluctuation of the position of the injection hole 6 of the battery cell 2, which is conducive to the control of the distance between the laser cleaning module 7 and the injection hole 6. It is easy to understand that in other embodiments, the support 10 can be one.

[0054] refer to Figure 1-Figure 3 In one embodiment, a first driving device 13 is respectively configured at both ends of the carrier 11. By providing two first driving devices 13, the two first driving devices 13 can share the force required to drive the carrier 11, reduce the burden of the first driving device 13, ensure the stable operation of the first driving device 13, and further ensure the smooth rotation of the carrier 11. In other embodiments, only one first driving device 13 may be configured.

[0055] It is easy to understand that the carrier 11 can be U-shaped, or can be a straight plate or a straight rod. In theory, the carrier 11 can be of any shape as long as it can be connected to the second driving device 14. The carrier 11 is preferably U-shaped. By setting the carrier 11 to be U-shaped, the overall height of the fixing frame 1 and the battery cell 2 after the battery cell 2 is fixed to the clamp 12 can be reduced, which facilitates the installation and removal of the battery cell 2 and saves space in the height direction.

[0056] refer to Figure 1 , Figure 2In one embodiment, the whole device further comprises a negative pressure dust removal module, which is provided with a wind shield 15, and the wind shield 15 faces the injection hole 6 of the battery cell 2. By providing the negative pressure dust removal module, the dust and gas generated during the cleaning process of the injection hole 6 can be removed.

[0057] It is understandable that the image sensor 5 can be a CCD camera or a CMOS camera, or other instruments with scanning and measuring functions. Among CCD cameras, a planar array CCD camera is preferred. The laser cleaning module 7 can be a gas laser, a solid laser, a semiconductor laser, etc., and a carbon dioxide laser among gas lasers is preferred.

[0058] It is easy to understand that the first drive device 13 and the second drive device 14 can be stepper motors or servo motors, preferably servo motors. The first electric slide 16 and the second electric slide 16 can also be replaced by linear guides.

[0059] refer to Figure 2 In one embodiment, the first axis 3 is parallel to the second direction 9. By setting the first axis 3 and the second direction 9 to be parallel to each other, the space occupied by the entire device can be saved by utilizing the layout of the components in the entire device. In other embodiments, the first axis 3 may not be parallel to the second direction 9.

[0060] It is worth noting that the fixing frame 1 can also be other structural forms, for example: the support 10 is installed on the output end of the second driving device 14, the carrier 11 is rotatably arranged on the support 10, the clamp 12 is installed on the carrier 11, the first driving device 13 is used to drive the clamp 12 to rotate around the first axis 3, and the second driving device 14 is used to drive the support 10 to rotate around the second axis 4.

[0061] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. A device for cleaning a battery cell injection hole, characterized in that: include A fixing frame, used to fix the battery cell, the fixing frame can drive the battery cell to rotate around a first axis and a second axis respectively, the first axis and the second axis are perpendicular to each other; An image sensor is used to photograph the liquid injection hole of the battery cell; A laser cleaning module, wherein the laser cleaning module and the fixing frame can move closer to or farther from each other along a first direction, and the laser cleaning module or the fixing frame can move along a second direction, wherein the first direction is perpendicular to the first axis, and the second direction is perpendicular to the first direction.

2. A device for cleaning a battery cell injection hole according to claim 1, characterized in that: The fixing frame includes a support, a carrier, a clamp, a first driving device, and a second driving device; The carrier is rotatably arranged on the support, and the first driving device is used to drive the carrier to rotate around a first axis; The second driving device is installed on the carrier, and the clamp is installed on the output end of the second driving device. The second driving device is used to drive the clamp to rotate around a second axis, and the clamp is used to clamp the battery core.

3. A device for cleaning a battery cell injection hole according to claim 2, characterized in that: There are two supports, which are arranged opposite to each other along the first axis, and two ends of the carrier are correspondingly arranged on the two supports.

4. A device for cleaning a battery cell injection hole according to claim 3, characterized in that: There are two first driving devices, and two ends of the carrier are correspondingly connected to the two first driving devices.

5. The device for cleaning the liquid injection hole of a battery cell according to claim 3, characterized in that: The carrier is U-shaped.

6. A device for cleaning a battery cell injection hole according to any one of claims 1 to 5, characterized in that: It also includes a negative pressure dust removal module, which is provided with a wind hood, and the wind hood faces the injection hole of the battery core.

7. The device for cleaning the liquid injection hole of a battery cell according to claim 6, characterized in that: The image sensor is a CCD camera.

8. The device for cleaning the liquid injection hole of a battery cell according to claim 6, characterized in that: The laser cleaning module is a carbon dioxide laser.

9. The device for cleaning the liquid injection hole of a battery cell according to claim 6, characterized in that: It also includes a first electric slide and a second electric slide. The first electric slide is installed at the moving end of the second electric slide. The laser cleaning module is installed at the moving end of the first electric slide. The moving direction of the moving end of the first electric slide is a first direction, and the moving direction of the moving end of the second electric slide is a second direction.

10. The device for cleaning the liquid injection hole of a battery cell according to claim 6, characterized in that: The first axis is parallel to the second direction.

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