A method and device for cleaning a power battery top cover
By combining laser cleaning methods and reflector assembly state switching with dry ice cleaning, the problem of low cleaning efficiency of power battery top covers has been solved, achieving efficient and automated cleaning and improving battery production efficiency and welding quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHAN YIFI LASER CORP LTD
- Filing Date
- 2024-05-30
- Publication Date
- 2026-06-30
Smart Images
Figure CN118595076B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of battery processing technology, and in particular to a method and apparatus for cleaning the top cover of a power battery. Background Technology
[0002] Batteries, as devices that convert chemical energy into electrical energy, are widely used in people's lives and industrial production. In the battery manufacturing process, the battery cells are sequentially flattened, coated with adhesive, placed in the casing, and the current collector is welded before the battery is finally capped to assemble the finished battery.
[0003] The process of closing the power battery cover mainly involves sealing the top cover of the power battery onto the open end of the battery casing. The quality of the top cover is crucial, as it directly affects the success rate of closing the cover and the appearance of the battery after closing. Currently, before closing the battery cover, the top cover of the power battery is mainly cleaned manually. This method is not only monotonous but also inefficient, which to some extent affects the production progress of the entire battery production line. Summary of the Invention
[0004] This invention provides a method and apparatus for cleaning the top cover of a power battery, which at least solves or improves the problems of existing manual cleaning methods for top covers, such as limited cleaning methods and low cleaning efficiency.
[0005] In a first aspect, the present invention provides a method for cleaning the top cover of a power battery, comprising:
[0006] Control the rotation of the top cover on the laser cleaning station;
[0007] The laser is controlled to start and run, and the reflector assembly is controlled to be selectively in a first state or a second state. The laser output by the laser is reflected by the reflector assembly to the galvanometer, and then reaches the periphery of the top cover through the galvanometer for laser cleaning of the top cover.
[0008] When the reflector assembly is in the first state, the reflector assembly converts the single laser output by the laser into multiple lasers that are dispersed from each other, and then the galvanometer controls the multiple lasers to reach the periphery of multiple top covers respectively.
[0009] When the reflector assembly is in the second state, the reflector assembly converts the single laser output by the laser into multiple lasers that are close to each other, and then the galvanometer controls the multiple lasers to reach the periphery of the same top cover.
[0010] The laser cleaning station is provided in multiple locations, and each of the top covers is rotatably mounted on one of the laser cleaning stations.
[0011] According to the present invention, a method for cleaning the top cover of a power battery is provided, wherein the reflector assembly includes a base, at least one semi-transparent lens, and a reflector;
[0012] The semi-transparent lens and the reflector are rotatably mounted on the base; at least one semi-transparent lens and the reflector are sequentially arranged along the light output direction of the laser; the semi-transparent lens is used to reflect a portion of the incident beam to the galvanometer, transmit another portion of the incident beam, and deliver the transmitted beam to the next semi-transparent lens or the reflector; the reflector is used to reflect the received beam to the galvanometer.
[0013] By changing the rotation angle of the semi-transparent lens and the reflector, the reflector assembly can be selectively placed in either a first state or a second state.
[0014] According to a method for cleaning the top cover of a power battery provided by the present invention, when the reflector assembly is in a second state, the method further includes:
[0015] The reflector assembly is controlled to move sequentially to multiple reflection positions along the light emission direction of the laser, so as to perform laser cleaning on the periphery of multiple top covers respectively;
[0016] The multiple reflection positions are arranged one-to-one with the multiple laser cleaning stations.
[0017] According to a method for cleaning the top cover of a power battery provided by the present invention, before laser cleaning the top cover, the method further includes: dry ice cleaning the periphery of the top cover.
[0018] According to a method for cleaning the top cover of a power battery provided by the present invention, before performing dry ice cleaning on the top cover, the method further includes:
[0019] The feeding unit is controlled to feed the top cover.
[0020] The control and positioning unit receives the top cover supplied by the feeding unit and positions the top cover for feeding.
[0021] The control and detection unit performs a good product inspection on the top cover after it has been loaded and positioned.
[0022] The control sorting unit transfers the top covers that pass the inspection by the detection unit to the dry ice cleaning station, and transfers the top covers that fail the inspection by the detection unit to the recycling station.
[0023] According to a method for cleaning the top cover of a power battery provided by the present invention, after laser cleaning the top cover, the method further includes:
[0024] The control sorting unit transfers the laser-cleaned top cover to the positioning unit;
[0025] The positioning unit is controlled to position the top cover during unloading.
[0026] The control unit performs the unloading operation on the top cover after it has been positioned.
[0027] In a second aspect, the present invention also provides a cleaning apparatus for implementing the power battery top cover cleaning method described above, comprising:
[0028] The first cleaning unit has a dry ice cleaning station for positioning the top cover once, and is capable of dry ice cleaning the periphery of the top cover while driving the top cover to rotate.
[0029] The sorting unit is used to transfer the top cover, which has completed dry ice cleaning, from the dry ice cleaning station to the laser cleaning station.
[0030] The second cleaning unit has multiple laser cleaning stations for secondary positioning of the top cover, and is capable of performing laser cleaning on the periphery of the top cover while driving the top cover to rotate.
[0031] According to a method for cleaning the top cover of a power battery provided by the present invention, both the first cleaning unit and the second cleaning unit include a top cover carrier, the top cover carrier being configured with a rotatably disposed top cover clamping head, the top cover clamping head including a rotating seat and a clamping assembly;
[0032] The rotating seat is used to support the bottom end of the top cover; the clamping assembly includes a plurality of clamping members, which are arranged circumferentially along the rotating seat and are movably disposed on the rotating seat; the clamping assembly has a first state and a second state.
[0033] When the clamping assembly is in the first state, each of the clamping members is close to the rotation center of the rotating seat and clamped to the peripheral wall of the top cover.
[0034] When the clamping assembly is in the second state, each of the clamping members moves away from the rotation center of the rotating seat to separate from the top cover.
[0035] According to a method for cleaning the top cover of a power battery provided by the present invention, the sorting unit is provided with a material sorting attachment, the material sorting attachment including a mounting base, a picking component and a plurality of pressing heads; the picking component and the plurality of pressing heads are respectively disposed on the lower surface of the mounting base, and the plurality of pressing heads are arranged around the picking component; the picking component is used to pick up or release the top cover;
[0036] The clamping member includes a clamping body and an elastic member; the clamping body is provided with a pressing groove, and when the groove wall of the pressing groove is pressed, the clamping body moves toward the side away from the rotation center; the elastic member is disposed between the clamping body and the rotating seat, and the elastic member is used to drive the clamping body to move toward the side closer to the rotation center; a plurality of pressing heads are arranged opposite to the pressing grooves of the plurality of clamping members to press against the groove wall of the pressing groove.
[0037] A method for cleaning the top cover of a power battery according to the present invention further includes: a feeding unit, a positioning unit, and a discharging unit;
[0038] The feeding unit is used to feed the top cover;
[0039] The positioning unit is used to receive the top cover supplied by the feeding unit and position the top cover for the detection unit to perform good product detection on the top cover.
[0040] The sorting unit transfers the top cover that passes the inspection by the detection unit to the first cleaning unit, transfers the top cover that fails the inspection by the detection unit to the recycling station, and transfers the top cover that has completed laser cleaning from the second cleaning unit to the positioning unit, so that the positioning unit can position the top cover for unloading.
[0041] The unloading unit is used to pick up the top cover that has been positioned by the positioning unit and to unload the top cover.
[0042] The power battery top cover cleaning method and apparatus provided by the present invention can selectively control the reflector assembly to be in a first state or a second state during the rotation of the top cover. When the reflector assembly is in the first state, the reflector assembly converts the single laser output from the laser into multiple lasers that are dispersed from each other. Then, the galvanometer controls the multiple lasers to reach the periphery of multiple top covers, so as to simultaneously complete laser cleaning of the top covers in each laser cleaning station. When the reflector assembly is in the second state, the reflector assembly converts the single laser output from the laser into multiple lasers that are close to each other. Then, the galvanometer controls the multiple lasers to reach the periphery of the same top cover, so as to efficiently complete laser cleaning of a single top cover in a laser cleaning station.
[0043] Therefore, it can be seen that the present invention can clean the top cover by using two cleaning modes based on the state switching of the reflector assembly, thus ensuring cleaning efficiency. Attached Figure Description
[0044] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0045] Figure 1 This is one of the flowcharts illustrating the power battery top cover cleaning method provided by the present invention;
[0046] Figure 2 This is one of the structural schematic diagrams of a laser cleaning mechanism based on a laser, a beam expander, a reflector assembly, and a galvanometer provided by the present invention for laser cleaning of a top cover;
[0047] Figure 3 This is the second schematic diagram of the laser cleaning mechanism based on a laser, a beam expander, a reflector assembly, and a galvanometer provided by the present invention for laser cleaning of the top cover;
[0048] Figure 4 This is the second flowchart of the power battery top cover cleaning method provided by the present invention;
[0049] Figure 5 This is the third flowchart of the power battery top cover cleaning method provided by the present invention;
[0050] Figure 6 This is a schematic diagram of the cleaning device for implementing the power battery top cover cleaning method provided by the present invention;
[0051] Figure 7 This is a schematic diagram of the structure of the positioning unit, sorting unit, cleaning unit and unloading unit provided by the present invention in cooperation;
[0052] Figure 8 This is a schematic diagram of the structure of the second cleaning unit provided by the present invention;
[0053] Figure 9 This is a structural schematic diagram of the top cover carrier provided by the present invention;
[0054] Figure 10 This is one of the structural schematic diagrams of the top cover clamping head provided by the present invention;
[0055] Figure 11 This is the second schematic diagram of the top cover clamping head provided by the present invention;
[0056] Figure 12 This is a schematic diagram of the structure of the first material sorting mechanism of the sorting unit and the first positioning element of the positioning unit provided by the present invention.
[0057] Figure 13This is a schematic diagram of the positioning gripper on the first positioning member provided by the present invention;
[0058] Figure 14 This is a schematic diagram of the structure of the first material distribution mechanism provided by the present invention;
[0059] Figure 15 This is a schematic diagram of the material distribution attachment provided by the present invention;
[0060] Figure 16 This is a schematic diagram of the feeding unit provided by the present invention;
[0061] Figure 17 This is a schematic diagram of the transfer mechanism in the feeding unit provided by the present invention;
[0062] Figure label:
[0063] 1. Feeding unit; 11. Feeding conveyor line; 12. Feeding robotic arm; 111. First line; 112. Second line; 113. Transfer mechanism; 1131. Linear movement module; 1132. Transfer frame; 1133. Transfer gripper;
[0064] 2. Positioning unit; 21. First positioning component; 211. Support frame; 212. Positioning gripper; 213. Material level detection sensor; 22. Second positioning component;
[0065] 3. Sorting unit; 31. First material sorting mechanism; 32. Second material sorting mechanism; 33. Linear slide module; 311. Material sorting attachment; 312. Transverse frame; 313. Lifting drive component; 3111. Mounting base; 3112. Pick-up component; 3113. Pressing head; 31131. Connecting arm; 31132. Pressure roller;
[0066] 4. Cleaning unit; 41. Top cover carrier; 42. Laser cleaning mechanism; 43. Negative pressure dust removal device; 411. Top cover clamping head; 412. Rotary drive mechanism; 413. First frame; 4111. Rotating seat; 4112. Clamping component; 41001. Positioning part; 41002. Connecting part; 4101. Pressing groove; 4102. Guide channel; 41121. Clamping body; 41122. Elastic component; 421. Second frame; 422. Motion mechanism; 423. Laser head;
[0067] 5. Unloading unit; 51. Unloading robotic arm; 52. Unloading conveyor line; 100. Top cover; 200. Pallet stacking;
[0068] 10. Laser; 20. Beam expander; 30. Mirror assembly; 40. Galvanometer; 101. First cleaning station; 102. Second cleaning station; 301. Base; 302. Semi-transparent mirror; 303. Mirror. Detailed Implementation
[0069] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.
[0070] The following is combined Figures 1-17 The method and apparatus for cleaning the top cover of a power battery provided in this invention will be described in detail through specific embodiments and application scenarios.
[0071] In the first aspect, such as Figure 1 As shown in the figure, an embodiment of the present invention provides a method for cleaning the top cover of a power battery, including the following steps:
[0072] Step S110: Control the rotation of the top cover on the laser cleaning station;
[0073] Step S120: Control the laser to start running, and control the reflector assembly to be selectively in the first state or the second state. The reflector assembly reflects the laser output from the laser to the galvanometer, and then the laser reaches the periphery of the top cover through the galvanometer to perform laser cleaning on the top cover.
[0074] In the first state, the reflector assembly converts the single laser output from the laser into multiple lasers that are dispersed from each other, and then the galvanometer controls the multiple lasers to reach the periphery of multiple top covers respectively.
[0075] When the reflector assembly is in the second state, the reflector assembly converts the single laser output from the laser into multiple lasers that are close to each other, and then the galvanometer controls the multiple lasers to reach the periphery of the same top cover.
[0076] There are multiple laser cleaning stations, and each top cover is rotatably mounted on one laser cleaning station.
[0077] Understandably, a second cleaning unit can be used to perform laser cleaning on the periphery of the top cover. The second cleaning unit includes a top cover carrier and a laser cleaning mechanism. Multiple laser cleaning stations are arranged side by side on the top cover carrier. Each laser cleaning station is equipped with a rotatable top cover clamping head, which clamps and positions the top cover and drives the top cover to rotate around its central axis.
[0078] like Figure 2 and Figure 3As shown, the laser cleaning mechanism is equipped with a laser 10, a beam expander 20, a reflector assembly 30, and a galvanometer 40. The laser 10, beam expander 20, reflector assembly 30, and galvanometer 40 are arranged sequentially along the optical path, and the galvanometer 40 is positioned opposite to the laser cleaning station.
[0079] Understandably, the mirror assembly 30 includes multiple reflective elements, which can be selected as semi-transparent mirrors, mirrors, or dichroic mirrors. By changing the position or orientation of the reflective elements in the optical path, the mirror assembly 30 can be switched between a first state and a second state.
[0080] Optionally, the galvanometer 40 can be configured as a single unit. When the reflector assembly 30 is in the first state, the multiple lasers output by the reflector assembly 30 are dispersed from each other and incident on multiple incident areas of the galvanometer 40 respectively. The galvanometer 40 then emits light towards the top cover of different laser cleaning stations through multiple exit areas. When the reflector assembly 30 is in the second state, the multiple lasers output by the reflector assembly 30 are brought closer together and incident on the same incident area of the galvanometer 40. The galvanometer 40 then emits light towards the top cover of a single laser cleaning station through a single exit area.
[0081] Optionally, multiple galvanometers 40 can be configured. When the reflector assembly 30 is in the first state, the multiple lasers output by the reflector assembly 30 are dispersed from each other and incident on different multiple galvanometers 40. The multiple galvanometers 40 then emit light towards the top cover of different laser cleaning stations. When the reflector assembly 30 is in the second state, the multiple lasers output by the reflector assembly 30 are brought closer together and incident on the same galvanometer 40. The galvanometer 40 then emits light towards the top cover of a single laser cleaning station.
[0082] The power battery top cover cleaning method of the present invention can selectively control the reflector assembly 30 to be in a first state or a second state during the rotation of the top cover. When the reflector assembly 30 is in the first state, the galvanometer 40 is controlled to incident multiple laser beams onto the periphery of multiple top covers, so as to simultaneously complete laser cleaning of the top covers in each laser cleaning station. When the reflector assembly 30 is in the second state, the galvanometer 40 is controlled to incident multiple laser beams onto the periphery of the same top cover. This allows for efficient laser cleaning of a single top cover in a laser cleaning station without controlling the top cover to rotate a full circle.
[0083] Therefore, it can be seen that the present invention can clean the top cover by using two cleaning modes based on the state switching of the reflector assembly, thus ensuring cleaning efficiency.
[0084] In some embodiments, such as Figure 2 and Figure 3As shown, in order to facilitate the switching of the state of the reflector assembly 30, the reflector assembly 30 includes a base 301, at least one semi-transparent mirror 302 and a reflector 303; wherein, the semi-transparent mirror 302 can also be called a semi-transparent mirror, and the semi-transparent mirror 302 can be replaced by a dichroic mirror.
[0085] The semi-transparent lens 302 and the reflector 303 are rotatably mounted on the base 301; at least one semi-transparent lens 302 and the reflector 303 are arranged sequentially along the light output direction of the laser 10; the semi-transparent lens 302 is used to reflect a portion of the incident beam to the galvanometer 40, transmit another portion of the incident beam, and deliver the transmitted beam to the next semi-transparent lens 302 or the reflector 303; the reflector 303 is used to reflect the received beam to the galvanometer 40.
[0086] Understandably, since the semi-transparent mirror 302 and the reflector 303 are rotatably mounted on the base 301, by changing the rotation angle of the semi-transparent mirror 302 and the reflector 303, the attitude of the semi-transparent mirror 302 and the reflector 303 in the optical path can be changed, thereby enabling the reflector assembly 30 to be selectively in the first state or the second state.
[0087] like Figure 2 and Figure 3 As shown, the reflector assembly 30 is equipped with a semi-transparent mirror 302 and a reflector 303. In this case, the reflector assembly 30 converts the single-path laser output from the laser 10 into two-path lasers and sends the two-path lasers to the galvanometer 40, which then outputs the lasers to the top cover of the first cleaning station 101 and the second cleaning station 102, respectively.
[0088] like Figure 2 As shown, when the reflector assembly 30 is in the first state, the semi-transparent lens 302 and the reflector 303 are at the first rotation angle and the second rotation angle respectively relative to the light output direction of the laser 10. The semi-transparent lens 302 reflects a portion of the incident beam from the laser 10 to the first incident area of the galvanometer 40, transmits the other portion of the incident beam, and sends the transmitted beam to the reflector 303. The reflector 303 then reflects the received beam to the second incident area of the galvanometer 40. Based on the incident beams received in the first and second incident areas, the galvanometer 40 outputs laser light to the top cover located at the first cleaning station 101 and the second cleaning station 102 respectively.
[0089] like Figure 3As shown, when the reflector assembly 30 is in the second state, the semi-transparent lens 302 and the reflector 303 are at the third rotation angle and the fourth rotation angle respectively relative to the light output direction of the laser 10. The semi-transparent lens 302 reflects a portion of the incident beam from the laser 10 to the first incident area of the galvanometer 40, transmits the other portion of the incident beam, and sends the transmitted beam to the reflector 303. The reflector 303 then reflects the received beam back to the first incident area of the galvanometer 40. Based on the incident beam received in the first incident area, the galvanometer 40 outputs laser light to the top cover located on the first cleaning station 101.
[0090] In this design, a semi-transparent mirror 302 and a mirror 303 are configured in the mirror assembly 30. When the mirror assembly 30 is in the second state, the size of the third rotation angle and the fourth rotation angle can be configured to ensure that the two laser beams output from the galvanometer 40 are incident on the edge of the top cover and are located at two points on opposite sides of the top cover. In this way, during the laser cleaning process, only the top cover needs to be rotated 180° to perform laser cleaning around the top cover without any blind spots.
[0091] In some embodiments, when the reflector assembly is in the second state, the power battery top cover cleaning method shown in this embodiment further includes the following steps:
[0092] The control mirror assembly moves sequentially to multiple reflection positions along the laser's output direction to perform laser cleaning on the periphery of multiple top covers; wherein, the multiple reflection positions are set one-to-one with multiple laser cleaning stations.
[0093] Understandably, when the reflector assembly includes a base, at least one half-lens and a reflector, the base is equipped with a linear drive, which is connected to the base and is used to drive the base to move along the laser's output direction, so that the reflector assembly can move sequentially to multiple reflection positions along the laser's output direction; wherein, the linear drive can be a telescopic rod or a lead screw drive mechanism.
[0094] The reflector assembly is initially positioned at the first reflection position, in its second state. The reflector assembly converts the single-path laser output from the laser into multiple laser beams that converge towards each other. A galvanometer then controls these multiple laser beams to reach the periphery of the top cover at the first laser cleaning station, thus completing the laser cleaning operation on the first top cover. Next, the reflector assembly is moved to the second reflection position, ensuring it remains in its second state, to perform laser cleaning on the top cover at the second laser cleaning station. This process is repeated for the corresponding top covers at multiple laser cleaning stations. This cleaning method ensures efficient laser cleaning of a single top cover while also allowing for the sequential laser cleaning of multiple top covers, enabling high-efficiency cleaning of a large batch of top covers.
[0095] In some embodiments, before laser cleaning the top cover, the power battery top cover cleaning method shown in this embodiment further includes: dry ice cleaning of the periphery of the top cover.
[0096] Understandably, a first cleaning unit can be used to perform dry ice cleaning on the periphery of the top cover. This first cleaning unit includes a top cover carrier and a dry ice cleaning mechanism. The top cover carrier has multiple dry ice cleaning stations arranged side-by-side. Each dry ice cleaning station is equipped with a rotatable top cover clamping head, which clamps and positions the top cover and drives it to rotate around its central axis. The dry ice cleaning mechanism is equipped with a dry ice cleaning nozzle that extends obliquely towards the periphery of the top cover. As the top cover clamping head rotates the top cover, the dry ice cleaning nozzle can be controlled to spray dry ice fluid onto the periphery of the top cover. This dry ice fluid is composed of high-speed flowing dry ice particles. Due to the extremely low boiling point of carbon dioxide, the dry ice particles undergo a rapid temperature change upon contact with the dirt, causing the dirt to shrink and loosen, thus completing the cleaning of the deposits around the top cover.
[0097] As can be seen from the above, in practical applications, the beneficial effects of sequentially performing dry ice cleaning and laser cleaning on the periphery of the top cover are as follows: Firstly, dry ice cleaning is not only fast but also does not damage the substrate. While removing impurities with dry ice, it can also reduce the temperature of the top cover. Secondly, since the top cover is at a low temperature during laser cleaning, the high temperature during laser cleaning can be avoided from affecting the insulating rubber plug on the top cover, ensuring the sealing performance of the insulating rubber plug. Furthermore, laser cleaning can be used to roughen the periphery of the top cover. The roughened surface is conducive to laser absorption, improving the welding efficiency and welding quality of the top cover when the battery is closed. Thirdly, performing two cleanings on the periphery of the top cover ensures thorough removal of any adhering substances around the top cover.
[0098] In some embodiments, such as Figure 4 As shown, before dry ice cleaning the top cover, the present invention further includes the following steps:
[0099] Step S410: Control the feeding unit to perform a feeding operation on the top cover;
[0100] Step S420: The control positioning unit receives the top cover supplied by the feeding unit and positions the top cover.
[0101] Step S430: Control the detection unit to perform a good product inspection on the top cover that has completed the feeding and positioning;
[0102] Step S440: Control the sorting unit to transfer the top cover that has passed the inspection by the detection unit to the dry ice cleaning station, and transfer the top cover that has failed the inspection by the detection unit to the recycling station.
[0103] Understandably, this embodiment can automatically feed and sort the top cover based on the cooperation of the feeding unit, positioning unit, detection unit, sorting unit, first cleaning unit and second cleaning unit. Then, the top cover that passes the inspection is first cleaned with dry ice at the dry ice cleaning station and then cleaned with laser at the laser cleaning station. Compared with the manual feeding and cleaning method, this cleaning method helps to ensure the efficiency and quality of subsequent cleaning of the top cover by automatically feeding and inspecting the top cover before cleaning.
[0104] In some embodiments, such as Figure 5 As shown, after laser cleaning the top cover, the present invention further includes the following steps:
[0105] Step S510: Control the sorting unit to transfer the laser-cleaned top cover to the positioning unit;
[0106] Step S520: Control the positioning unit to position the top cover during unloading;
[0107] Step S530: Control the unloading unit to unload the top cover that has completed unloading and positioning.
[0108] Understandably, this embodiment, based on the cooperation of the sorting unit, the first cleaning unit, the second cleaning unit, the positioning unit, and the unloading unit, can automatically perform unloading positioning and unloading operations on the top cover after the qualified top cover is sequentially cleaned with dry ice and laser, based on the cooperation of the sorting unit, the first cleaning unit, the second cleaning unit, the positioning unit, and the unloading unit, so as to ensure the unloading efficiency of the top cover.
[0109] In the second aspect, such as Figure 6 and Figure 7 As shown, this embodiment of the invention also provides a cleaning device for implementing the power battery top cover cleaning method described above, including: a sorting unit 3 and a cleaning unit 4; the cleaning unit 4 includes a first cleaning unit and a second cleaning unit.
[0110] The first cleaning unit has a dry ice cleaning station for positioning the top cover 100 once, and performs dry ice cleaning on the periphery of the top cover 100 while driving the top cover 100 to rotate.
[0111] Sorting unit 3 is used to transfer the top cover 100, which has completed dry ice cleaning, from the dry ice cleaning station to the laser cleaning station.
[0112] The second cleaning unit has multiple laser cleaning stations for secondary positioning of the top cover 100, and performs laser cleaning on the periphery of the top cover 100 while driving the top cover 100 to rotate.
[0113] Understandably, the sorting unit 3 is located on one side of the cleaning unit 4, and the first cleaning unit and the second cleaning unit are arranged side by side. The sorting unit 3 can use a robotic arm to transfer the top cover 100 that has completed dry ice cleaning from the first cleaning unit to the second cleaning unit.
[0114] In practical applications, the first cleaning unit positions the top cover 100 once, enabling it to rotate stably according to a set position and posture. This facilitates reliable cleaning of the periphery of the top cover 100 using dry ice cleaning. Dry ice cleaning is not only fast but also does not damage the substrate. While removing impurities with dry ice, it also reduces the temperature of the top cover 100. After the top cover 100, which has undergone dry ice cleaning, is transferred to the second cleaning unit, it is positioned a second time. This again enables stable rotation of the top cover 100 according to a set position and posture, facilitating reliable cleaning of the periphery of the top cover 100 using laser cleaning. This avoids the high temperature during laser cleaning affecting the insulating plug on the top cover 100, ensuring the sealing performance of the insulating plug. It also roughens the periphery of the top cover 100, which is beneficial for laser absorption and improves the welding efficiency and quality of the top cover 100 when the battery is closed.
[0115] As can be seen from the above, compared with manual cleaning, the top cover 100 cleaning device of the present invention can thoroughly clean the attachments around the top cover 100, improve cleaning efficiency, and also help ensure the efficiency and quality of subsequent welding of the top cover 100.
[0116] In some embodiments, such as Figure 6 and Figure 7 As shown, both the first cleaning unit and the second cleaning unit include a top cover carrier 41. The top cover carrier 41 is equipped with a rotatably configured top cover clamping head 411, which is used to clamp and position the top cover 100.
[0117] The following description uses the second cleaning unit as an example to illustrate the relevant structure of cleaning unit 4.
[0118] like Figure 8 As shown, the top cover carrier 41 of the second cleaning unit includes a first frame 413, a rotary drive mechanism 412, and a top cover clamping head 411. The rotary drive mechanism 412 is mounted on the first frame 413 and connected to the top cover clamping head 411 to drive the top cover clamping head 411 to rotate around its rotation center. The rotary drive mechanism 412 can be a servo motor, and the output end of the servo motor is connected to the rotating seat 4111 via a coupling to drive the top cover clamping head 411 to rotate.
[0119] Meanwhile, the second cleaning unit is also equipped with a laser cleaning mechanism 42, which includes a second frame 421, a motion mechanism 422, and a laser head 423. The motion mechanism 422 is mounted on the second frame 421 and is connected to the laser head 423 to adjust the tilt angle and defocusing amount of the laser head 423. The laser head 423 integrates the laser 10, beam expander 20, reflector assembly 30, and galvanometer 40 shown in the above embodiment.
[0120] like Figure 8 and Figure 9 As shown, a negative pressure dust removal device 43 is configured on the top cover carrier 41. The negative pressure dust removal device 43 includes a cover and a suction pipe connected to the cover. The cover is placed on the upper side of the top cover clamping head 411. During the dry ice cleaning or laser cleaning of the top cover 100, the dust generated during the cleaning process can be collected by the cover and the suction pipe under the action of negative pressure.
[0121] like Figure 9 and Figure 10 As shown, the top cover clamping head 411 includes a rotating base 4111 and a clamping assembly; the rotating base 4111 is used to support the bottom end of the top cover 100; the clamping assembly includes a plurality of clamping members 4112, which are arranged circumferentially along the rotating base 4111 and are movably disposed on the rotating base 4111 respectively; the clamping assembly has a first state and a second state; when the clamping assembly is in the first state, each clamping member 4112 is close to the rotation center of the rotating base 4111 and clamps the peripheral wall of the top cover 100; when the clamping assembly is in the second state, each clamping member 4112 is away from the rotation center of the rotating base 4111 to achieve separation from the top cover 100.
[0122] Understandably, the rotating seat 4111 on the top cover clamping head 411 is disc-shaped. The first surface of the rotating seat 4111 is used to support the top cover 100. The second surface of the rotating seat 4111 is provided with a connecting part 41002, which is detachably connected to the rotary drive mechanism 412.
[0123] When the top cover 100 is placed on the rotating seat 4111, the top cover 100 and the rotating seat 4111 are coaxially arranged. The connecting part 41002 can be configured as a threaded connecting post or a threaded hole to achieve threaded connection with the output end of the rotary drive mechanism 412; the connecting part 41002 can also be configured with a vent hole so that after the top cover 100 is cleaned, the top cover 100 can be smoothly picked up by a suction cup to achieve the transfer of the top cover 100.
[0124] Meanwhile, for the multiple clamping members 4112 corresponding to the clamping assembly, the multiple clamping members 4112 form a clamping space for clamping the top cover 100. The multiple clamping members 4112 are circumferentially distributed relative to the rotation center of the rotating seat 4111, for example, the multiple clamping members 4112 are evenly arranged circumferentially relative to the rotation center. Among them, the clamping member 4112 has a clamping end, which is the end of the clamping member 4112 facing the rotation center of the rotating seat 4111. The clamping end is configured to contact or separate from the peripheral wall of the top cover 100.
[0125] When the clamping assembly is in the first state, the clamping end of each clamping member 4112 has a first radial distance relative to the rotation center of the rotating seat 4111; when the clamping assembly is in the second state, the clamping end of each clamping member 4112 has a second radial distance relative to the rotation center of the rotating seat 4111, the second radial distance is greater than the first radial distance, and the first radial distance is adapted to the radius corresponding to the clamping part on the top cover 100.
[0126] In some embodiments, such as Figure 10 and Figure 11 As shown, the upper surface of the rotating seat 4111 is provided with a positioning part 41001; the bottom end of the top cover 100 is provided with a protrusion, and the positioning part 41001 cooperates with the peripheral wall of the protrusion so that the central axis of the top cover 100 coincides with the rotation center of the rotating seat 4111; wherein, a plurality of clamping members 4112 are configured to clamp on the peripheral wall of the protrusion.
[0127] Understandably, the top cover 100 includes a cover body and a protrusion. The protrusion is located on the bottom surface of the cover body, and the positioning part 41001 is arranged around the peripheral wall of the protrusion to position the peripheral wall of the protrusion. In this case, the cover body covers the upper surface of the positioning part 41001. This design ensures that when the top cover 100 is placed on the rotating seat 4111, the top cover 100 and the rotating seat 4111 are coaxially arranged so that the rotating seat 4111 supports the top cover 100 and rotates coaxially with it, thereby allowing the laser cleaning mechanism 42 to clean the periphery of the top cover 100 without dead angles.
[0128] Optionally, the positioning part 41001 can be multiple positioning blocks, spaced apart from each other and arranged around the peripheral wall of the protrusion. Optionally, the positioning part 41001 is a positioning groove provided in the rotating seat 4111, with the protrusion fitted into the positioning groove, so as to use the positioning groove to position the protrusion at the lower end of the top cover 100, thereby ensuring the coaxiality of the top cover 100 and the rotating seat 4111. The positioning groove is coaxially arranged with the rotating seat 4111.
[0129] Furthermore, when the positioning part 41001 is configured as a positioning groove, the rotating seat 4111 is also provided with multiple guide channels 4102, and multiple clamping members 4112 are correspondingly provided in the multiple guide channels 4102. The end of the guide channel 4102 facing the rotation center is connected to the positioning groove. Each guide channel 4102 extends radially along the rotating seat 4111 so as to guide the clamping member 4112 to move radially along the rotating seat 4111.
[0130] In this way, the positioning part 41001 and the guide channel 4102 are organically combined to ensure that the positioning operation of the top cover 100 and the clamping operation of the top cover 100 do not interfere with each other.
[0131] In some embodiments, such as Figure 6 As shown in the figure, the cleaning device in this embodiment further includes: a feeding unit 1, a positioning unit 2, and a discharging unit 5; the feeding unit 1 is used to feed the top cover 100; the positioning unit 2 is used to receive the top cover 100 supplied by the feeding unit 1 and position the top cover 100 for the detection unit to perform good product detection on the top cover 100; the sorting unit 3 transfers the top cover 100 that has passed the detection unit to the first cleaning unit, transfers the top cover 100 that has failed the detection unit to the recycling station, and transfers the top cover 100 that has completed laser cleaning from the second cleaning unit to the positioning unit 2 for the positioning unit 2 to discharge and position the top cover 100; the discharging unit 5 is used to pick up the top cover 100 that has completed discharging and positioning on the positioning unit 2 and perform the discharging operation on the top cover 100.
[0132] Understandably, this invention, through the configuration of a feeding unit 1, a positioning unit 2, a sorting unit 3, a first cleaning unit, a second cleaning unit, and a discharging unit 5, allows the feeding unit 1 to continuously feed the top cover 100; after the positioning unit 2 positions the top cover 100, the detection unit performs a good product inspection on the top cover 100; at the position where the top cover 100 was positioned, the sorting unit 3 picks up the top cover 100 in the set posture, transferring the qualified top cover 100 to the top cover carrier 41 of the first cleaning unit, while transferring the unqualified top cover 100 to the recycling station; after the top cover carrier 41 of the first cleaning unit positions the qualified top cover 100 once, during the process of the top cover carrier 41 driving the top cover 100 to rotate, the dry ice cleaning gun head of the first cleaning unit outputs dry ice fluid to clean the top cover 100. The top cover 100 is dry-ice cleaned around its perimeter. Next, the sorting unit 3 transfers the dry-ice cleaned top cover 100 to the top cover carrier 41 of the second cleaning unit. The top cover carrier 41 of the second cleaning unit performs secondary positioning of the top cover 100. While the top cover carrier 41 drives the top cover 100 to rotate, the laser head 423 of the second cleaning unit outputs laser to clean the perimeter of the top cover 100. Then, at the position where the top cover 100 is secondary positioned, the sorting unit 3 picks up the top cover 100 in a set posture and transfers the laser-cleaned top cover 100 from the second cleaning unit to the positioning unit 2. The positioning unit 2 then positions the top cover 100 for unloading. Finally, at the position where the top cover 100 is positioned for unloading, the unloading unit 5 picks up the top cover 100 and performs the unloading process.
[0133] As can be seen from the above, the present invention can efficiently complete the loading, sorting, dry ice cleaning, laser cleaning and unloading operations of the top cover 100. The entire operation process does not require personnel intervention and can stably and efficiently clean a large number of top covers 100, ensuring the cleaning quality and cleaning efficiency of the top cover 100.
[0134] In some embodiments, such as Figure 7 and Figure 12 As shown, to ensure the working efficiency of the sorting unit 3, the sorting unit 3 includes a first material distribution mechanism 31 and a second material distribution mechanism 32. Both the first material distribution mechanism 31 and the second material distribution mechanism 32 are equipped with material distribution attachments 311. The first material distribution mechanism 31 is used to selectively transfer the top cover 100 that has completed loading and positioning on the positioning unit 2 to the first cleaning unit or recycling station, and to transfer the top cover 100 that has completed dry ice cleaning to the second cleaning unit, based on the detection results of the detection unit. The second material distribution mechanism 32 is used to transfer the top cover 100 that has completed laser cleaning to the unloading and positioning position on the positioning unit 2 via the material distribution attachments 311.
[0135] In some embodiments, such as Figure 14 and Figure 15 As shown, the sorting unit 3 is provided with a material sorting attachment 311, which includes a mounting base 3111, a picking component 3112, and a plurality of pressing heads 3113. The picking component 3112 and the plurality of pressing heads 3113 are respectively disposed on the lower surface of the mounting base 3111, and the plurality of pressing heads 3113 are arranged around the picking component 3112. The picking component 3112 is used to pick up or release the top cover 100.
[0136] At the same time, such as Figure 10 and Figure 11 As shown, the clamping member 4112 includes a clamping body 41121 and an elastic member 41122; the clamping body 41121 is provided with a pressing groove 4101, and when the groove wall of the pressing groove 4101 is pressed, the clamping body 41121 moves toward the side away from the rotation center; the elastic member 41122 is disposed between the clamping body 41121 and the rotating seat 4111, and the elastic member 41122 is used to drive the clamping body 41121 to move toward the side closer to the rotation center; a plurality of pressing heads 3113 are arranged one-to-one with the pressing grooves 4101 corresponding to the plurality of clamping members 4112 to press against the groove wall of the pressing groove 4101.
[0137] Understandably, the pickup component 3112 can be any one of a suction cup, a magnetic chuck, or a gripper; when the pickup component 3112 is a suction cup, the suction cup can be adsorbed onto the upper surface of the top cover 100 under negative pressure; when the top cover 100 is made of ferromagnetic material, the pickup component 3112 can be a magnetic chuck, which can be a permanent magnet and adsorbed onto the upper surface of the top cover 100; when the pickup component 3112 is a gripper, the gripper is held against the peripheral wall of the top cover 100.
[0138] Optionally, such as Figure 15 As shown, the pressing head 3113 includes a connecting arm 31131 and a pressing roller 31132; the upper end of the connecting arm 31131 is connected to the mounting base 3111, the lower end of the connecting arm 31131 is connected to the pressing roller 31132, and the pressing roller 31132 makes rolling contact with the groove wall of the pressing groove 4101.
[0139] Understandably, the connecting arm 31131 can be configured to be vertically distributed, and the pressure roller 31132 is rotatably disposed at the lower end of the connecting arm 31131, with the central axis of the pressure roller 31132 being horizontally distributed. The wall of the pressing groove 4101 faces the rotation center of the rotating seat 4111 and is configured as either an inclined surface or an arc surface, or a combination of an inclined surface and an arc surface.
[0140] Meanwhile, by configuring the pressing head 3113 as a connecting arm 31131 and the pressure roller 31132, not only can the downward pressing stroke of the pressing head 3113 be ensured so as to control the movement stroke of the clamping member 4112, but also, based on the rolling contact between the pressure roller 31132 and the groove wall of the pressing groove 4101, noise is ensured during the pressing process, and the clamping member 4112 is prevented from deforming during frequent pressing operations.
[0141] In some embodiments, such as Figure 7 and Figure 12 As shown, the first material distribution mechanism 31 and the second material distribution mechanism 32 are also equipped with a transverse frame 312 and a lifting drive 313; the transverse frame 312 can move transversely in the first direction, the lifting drive 313 is provided on the transverse frame 312, and the lifting drive 313 is connected to the mounting seat 3111 of the material distribution attachment 311 to drive the material distribution attachment 311 to perform lifting and lowering movements.
[0142] Understandably, by configuring the positions of the first material distribution mechanism 31 and the second material distribution mechanism 32 relative to the top cover carrier 41, it can be ensured that the first material distribution mechanism 31 and the second material distribution mechanism 32 can work together without interfering with each other.
[0143] Meanwhile, in order to facilitate the switching of the state of the clamping components on the top cover clamping head 411 by controlling the material distribution attachment 311, the material distribution attachment 311 can be raised and lowered by the lifting drive 313, which can be an electric push rod or a screw lifting drive mechanism.
[0144] In some embodiments, such as Figure 7 As shown, in order to facilitate the lateral movement of the first material distribution mechanism 31 and the second material distribution mechanism 32 along the first direction, the sorting unit 3 also includes a linear slide module 33; the first material distribution mechanism 31 and the second material distribution mechanism 32 are respectively disposed on the linear slide module 33, the linear slide module 33 is located on one side of the top cover carrier 41, and drives the first material distribution mechanism 31 and the second material distribution mechanism 32 to move along the first direction respectively.
[0145] Understandably, the linear slide module 33 includes a first linear module and a second linear module. The slides of the first linear module and the second linear module can both move along a first direction. The transverse frame 312 of the first material distribution mechanism 31 is mounted on the slide of the first linear module, and the transverse frame 312 of the second material distribution mechanism 32 is mounted on the slide of the second linear module.
[0146] In some embodiments, such as Figure 7As shown, the positioning unit 2 includes a first positioning element 21 and a second positioning element 22; the first positioning element 21 is disposed between the feeding unit 1 and the sorting unit 3, and the first cleaning unit and the second cleaning unit are disposed side by side between the first positioning element 21 and the second positioning element 22; the second positioning element 22 is disposed between the sorting unit 3 and the unloading unit 5.
[0147] The first positioning component 21 is used for positioning the top cover 100 for loading, and the second positioning component 22 is used for positioning the top cover 100 for unloading.
[0148] Specifically, in this embodiment, the first positioning member 21 is arranged opposite to the first material distribution mechanism 31, and the second positioning member 22 is arranged opposite to the second material distribution mechanism 32. The first positioning member 21 and the second positioning member 22 can adopt the same structure, and both can complete the positioning operation of the top cover 100 by using the positioning gripper 212 or the contour groove.
[0149] In some embodiments, such as Figure 12 and Figure 13 As shown, both the first positioning member 21 and the second positioning member 22 are equipped with a support frame 211, a positioning gripper 212 and a material level detection sensor 213. The positioning gripper 212 is mounted on the support frame 211, and the material level detection sensor 213 is mounted on one side of the positioning gripper 212. The positioning gripper 212 is used to clamp and position the top cover 100, and the material level detection sensor 213 is used to detect whether the top cover 100 is present in the clamping opening of the positioning gripper 212.
[0150] In practical applications, the support frame 211 is used to provide a support platform for setting the positioning gripper 212 and setting the positioning gripper 212 at a set height; the material level detection sensor 213 can be a photoelectric switch. The material level detection sensor 213 and the positioning gripper 212 are electrically connected. When the material level detection sensor 213 detects that the top cover 100 is in the clamping opening of the positioning gripper 212, it can control the positioning gripper 212 to be in a clamping state to clamp and position the top cover 100.
[0151] Meanwhile, this embodiment requires an adaptive configuration of the positioning gripper 212 according to the structure of the material distribution attachment 311, so that the material distribution attachment 311 can pick up the top cover 100 that has been positioned from the gripping opening of the positioning gripper 212, or place the top cover 100 to be positioned into the gripping opening of the positioning gripper 212.
[0152] In some embodiments, such as Figure 7 As shown, the detection unit includes a barcode scanning mechanism, which is used to scan the barcode on the top cover 100 that has completed its first positioning on the positioning unit 2; wherein, Figure 7 An inverted cubic prism is used to represent the scanning status of the scanning mechanism on the top cover 100.
[0153] Meanwhile, when the scanning mechanism fails to scan the top cover 100, the sorting unit 3 is used to transfer the top cover 100 to the recycling station; when the scanning mechanism successfully scans the top cover 100, the sorting unit 3 is used to transfer the top cover 100 to the first cleaning unit.
[0154] In some embodiments, such as Figure 6 and Figure 16 As shown, the loading unit 1 includes a loading conveyor line 11 and a loading robotic arm 12; the loading conveyor line 11 is used to support the top cover tray and move the top cover tray to the loading station; the top cover tray holds a plurality of top covers 100; the loading robotic arm 12 is located on one side of the loading station and picks up the top covers 100 from the top cover tray and transfers the top covers 100 to the positioning unit 2.
[0155] Understandably, the feeding conveyor line 11 can be a belt conveyor or a roller conveyor, and the feeding conveyor line 11 is used to continuously transport the top cover trays containing multiple top covers 100.
[0156] Meanwhile, the loading robotic arm 12 can be a multi-degree-of-freedom robotic arm. The execution end of the multi-degree-of-freedom robotic arm is equipped with a telescopic rod, which is arranged vertically. The lower end of the telescopic rod is equipped with a negative pressure suction nozzle, which is used to suck up or release the top cover 100.
[0157] In some embodiments, such as Figure 16 As shown, the loading conveyor line 11 includes a first line 111, a second line 112, and a transfer mechanism 113; the first line 111 and the second line 112 are arranged side by side, and the transfer mechanism 113 is located between the first line 111 and the second line 112; the first line 111 is used to move the pallet stack 200 to the loading station, the pallet stack 200 includes multiple stacked top cover pallets; the transfer mechanism 113 is used to pick up empty top cover pallets from above the pallet stack 200 and transfer the empty top cover pallets to the second line 112; the second line 112 is used to perform the unloading operation of the empty top cover pallets.
[0158] Understandably, both the first production line 111 and the second production line 112 can be roller conveyors. The transfer mechanism 113 includes a linear motion module 1131, a transfer frame 1132, and a transfer gripper 1133. The transfer frame 1132 is mounted on the slide of the linear motion module 1131, and the transfer gripper 1133 is mounted on the transfer frame 1132. The transfer gripper 1133 is used to pick up or release the top cover tray. The linear motion module 1131 is used to control the movement of the transfer gripper 1133 between a first position and a second position. When the transfer gripper 1133 is in the first position, it is located above the end of the first line 111 to pick up an empty top cover tray from above the tray stack 200. When the transfer gripper 1133 is in the second position, it is located above the beginning of the second line 112 to release an empty top cover tray from the beginning of the second line 112. Obviously, this embodiment organically combines the first line 111, the second line 112 and the transfer mechanism 113 together. This design greatly reduces the space occupied. While meeting the material feeding requirements of the top cover 100, it can also quickly unload empty top cover trays.
[0159] In some examples, such as Figure 17 As shown, the transfer gripper 1133 includes a lifting drive, an adapter, a first horizontal drive, a second horizontal drive, a first claw body, and a second claw body. The lifting drive is mounted on the transfer frame 1132, with its lifting end facing vertically downwards and connected to the adapter. The first horizontal drive and the second horizontal drive are mounted on the adapter in an opposing manner, and the first claw body and the second claw body are arranged side by side. The first claw body is connected to the first horizontal drive, and the second claw body is connected to the second horizontal drive.
[0160] Thus, the lifting drive is used to control the clamping height of the first claw and the second claw, and the first horizontal drive and the second horizontal drive cooperate with each other to control the first claw and the second claw to move closer or further apart, so as to clamp or release the top cover tray.
[0161] In some embodiments, such as Figure 6 and Figure 7 As shown, the unloading unit 5 includes an unloading conveyor line 52 and an unloading robotic arm 51; the unloading robotic arm 51 is used to pick up the top cover 100 that has completed unloading positioning on the positioning unit 2, and to transfer the top cover 100 to the unloading conveyor line 52; the unloading conveyor line 52 is used to perform unloading processing of the top cover 100.
[0162] Understandably, the unloading robotic arm 51 can adopt a structure similar to the loading robotic arm 12. The unloading robotic arm 51 uses a negative pressure suction nozzle to pick up the top cover 100 from the positioning gripper 212 corresponding to the second positioning member 22, and then transfers the top cover 100 to the unloading conveyor line 52.
[0163] The unloading conveyor line 52 can be a belt conveyor line with multiple trays arranged sequentially along the conveying direction. Each tray supports a top cover 100, providing physical protection and preventing contamination. Driven by the belt conveyor line, the top cover 100 can be moved using multiple trays, thus achieving the unloading of the top cover 100.
[0164] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A method for cleaning a top cover of a power battery, characterized in that, include: Control the rotation of the top cover on the laser cleaning station; The laser is controlled to start and run, and the reflector assembly is controlled to be selectively in a first state or a second state. The laser output by the laser is reflected by the reflector assembly to the galvanometer, and then reaches the periphery of the top cover through the galvanometer for laser cleaning of the top cover. When the reflector assembly is in the first state, the reflector assembly converts the single laser output by the laser into multiple lasers that are dispersed from each other, and then the galvanometer controls the multiple lasers to reach the periphery of multiple top covers respectively. When the reflector assembly is in the second state, the reflector assembly converts the single laser output by the laser into multiple lasers that are close to each other, and then the galvanometer controls the multiple lasers to reach the periphery of the same top cover. The laser cleaning station is provided in multiple locations, and each of the top covers is rotatably mounted on one of the laser cleaning stations. The mirror assembly includes a base, at least one half-lens, and a mirror; The semi-transparent lens and the reflector are rotatably mounted on the base; at least one semi-transparent lens and the reflector are sequentially arranged along the light output direction of the laser; the semi-transparent lens is used to reflect a portion of the incident beam to the galvanometer, transmit another portion of the incident beam, and deliver the transmitted beam to the next semi-transparent lens or the reflector; the reflector is used to reflect the received beam to the galvanometer. By changing the rotation angle of the semi-transparent lens and the reflector, the reflector assembly can be selectively placed in either a first state or a second state.
2. The method for cleaning the top cover of a power battery according to claim 1, characterized in that, When the reflector assembly is in the second state, the method further includes: The reflector assembly is controlled to move sequentially to multiple reflection positions along the light emission direction of the laser, so as to perform laser cleaning on the periphery of multiple top covers respectively; The multiple reflection positions are arranged one-to-one with the multiple laser cleaning stations.
3. The method for cleaning the top cover of a power battery according to claim 1 or 2, characterized in that, Before laser cleaning the top cover, the process also includes dry ice cleaning of the periphery of the top cover.
4. The method for cleaning the top cover of a power battery according to claim 3, characterized in that, Prior to dry ice cleaning of the top cover, the process also includes: The feeding unit is controlled to feed the top cover. The control and positioning unit receives the top cover supplied by the feeding unit and positions the top cover for feeding. The control and detection unit performs a good product inspection on the top cover after it has been loaded and positioned. The control sorting unit transfers the top covers that pass the inspection by the detection unit to the dry ice cleaning station, and transfers the top covers that fail the inspection by the detection unit to the recycling station.
5. The method for cleaning the top cover of a power battery according to claim 1 or 2, characterized in that, After laser cleaning the top cover, the process also includes: The control sorting unit transfers the laser-cleaned top cover to the positioning unit; The positioning unit is controlled to position the top cover during unloading. The control unit performs the unloading operation on the top cover after it has been positioned.
6. A cleaning apparatus for implementing the power battery top cover cleaning method as described in any one of claims 1 to 5, characterized in that, include: The first cleaning unit has a dry ice cleaning station for positioning the top cover once, and is capable of dry ice cleaning the periphery of the top cover while driving the top cover to rotate. The sorting unit is used to transfer the top cover, which has completed dry ice cleaning, from the dry ice cleaning station to the laser cleaning station. The second cleaning unit has multiple laser cleaning stations for secondary positioning of the top cover, and is capable of performing laser cleaning on the periphery of the top cover while driving the top cover to rotate.
7. The cleaning apparatus according to claim 6, characterized in that, Both the first cleaning unit and the second cleaning unit include a top cover carrier, the top cover carrier being equipped with a rotatably configured top cover clamping head, the top cover clamping head including a rotating seat and a clamping assembly; The rotating seat is used to support the bottom end of the top cover; the clamping assembly includes a plurality of clamping members, which are arranged circumferentially along the rotating seat and are movably disposed on the rotating seat; the clamping assembly has a first state and a second state. When the clamping assembly is in the first state, each of the clamping members is close to the rotation center of the rotating seat and clamped to the peripheral wall of the top cover. When the clamping assembly is in the second state, each of the clamping members moves away from the rotation center of the rotating seat to separate from the top cover.
8. The cleaning apparatus according to claim 7, characterized in that, The sorting unit is equipped with a material sorting attachment, which includes a mounting base, a picking component, and multiple pressing heads. The picking component and the multiple pressing heads are respectively disposed on the lower surface of the mounting base, and the multiple pressing heads are arranged around the picking component. The picking component is used to pick up or release the top cover. The clamping member includes a clamping body and an elastic member; the clamping body is provided with a pressing groove, and when the groove wall of the pressing groove is pressed, the clamping body moves toward the side away from the rotation center; the elastic member is disposed between the clamping body and the rotating seat, and the elastic member is used to drive the clamping body to move toward the side closer to the rotation center; a plurality of pressing heads are arranged opposite to the pressing grooves of the plurality of clamping members to press against the groove wall of the pressing groove.
9. The cleaning apparatus according to claim 6, characterized in that, Also includes: The unit consists of a loading unit, a positioning unit, and an unloading unit. The feeding unit is used to feed the top cover; The positioning unit is used to receive the top cover supplied by the feeding unit and position the top cover for the detection unit to perform good product detection on the top cover. The sorting unit transfers the top cover that passes the inspection by the detection unit to the first cleaning unit, transfers the top cover that fails the inspection by the detection unit to the recycling station, and transfers the top cover that has completed laser cleaning from the second cleaning unit to the positioning unit, so that the positioning unit can position the top cover for unloading. The unloading unit is used to pick up the top cover that has been positioned by the positioning unit and to unload the top cover.