Film tearing apparatus and battery production system

Abstract

This application relates to a film-removing device and a battery production system. The film-removing device includes a feeding module and a film-removing module; the feeding module includes a first positioning platform; the first positioning platform adjusts the spacing of multiple battery cells to a first preset spacing; the first positioning platform includes at least one positioning mechanism; the positioning mechanism includes a positioning base plate and at least one positioning component; the positioning base plate is used to support the battery cells; the positioning component is used to push the side of the battery cells to position them; the film-removing module includes a film-removing platform, a conveying mechanism, and a film-removing mechanism; the film-removing platform is provided with multiple film-removing stations with a spacing of the first preset spacing; the conveying mechanism transports multiple battery cells from the first positioning platform to the multiple film-removing stations so that the film-removing mechanism can remove the film from the battery cells. The film-removing device provided by this application can accurately position the battery cells to be peeled from the tray, ensuring accurate film removal and efficient transfer of the battery cells, thus adapting to the film-removing operation of small-sized battery cells.

Description

Technical Field

[0001] This application relates to the field of production equipment, and in particular to a film-peeling device and a battery production system. Background Technology

[0002] During the production of pouch lithium batteries, a protective film is applied to the surface of the cells to prevent scratches and oxidation during transportation and processing. Before the cells are shipped off the production line and before small module assembly, the protective film on the cell surface must be peeled off.

[0003] Most existing film-peeling equipment is used to peel off the protective film from the surface of large-sized battery cells. Specifically, the feeding equipment arranges and conveys large-sized battery cells according to a first preset spacing, which matches the spacing of multiple film-peeling stations configured in the film-peeling equipment. The material handling mechanism can directly feed multiple arranged large-sized battery cells to the corresponding film-peeling station at one time, realizing efficient and continuous film-peeling operation.

[0004] However, due to the structural characteristics of small-sized battery cells, they require transport and handling via blister packs. Different models of small-sized battery cells correspond to different blister pack sizes, and these packs have varying spacing between the support positions based on the product size. While this design effectively protects the safety of small-sized battery cells during transport, it prevents existing film-peeling equipment from directly adapting to their material handling mechanisms, unlike the methods used for larger battery cells, which allow for direct loading of the cells to the film-peeling station. Summary of the Invention

[0005] The purpose of this application is to provide a film-removing device and a battery production system for removing the film from small-sized battery cells loaded in a tray.

[0006] This application provides a film-peeling device, including a feeding module and a film-peeling module; The feeding module includes a first positioning platform; the first positioning platform is used to adjust the spacing between the plurality of battery cells to a first preset spacing; the first positioning platform includes at least one positioning mechanism; the positioning mechanism includes a positioning base plate and at least one positioning component; the positioning base plate is used to support the battery cell; the positioning component is used to push the side of the battery cell to position the battery cell; The film-peeling module includes a film-peeling platform, a conveying mechanism, and a film-peeling mechanism; the film-peeling platform is provided with multiple film-peeling stations, and the distance between the multiple film-peeling stations is a first preset distance; the conveying mechanism is used to transport multiple battery cells at the first positioning platform to the multiple film-peeling stations; the film-peeling mechanism is used to peel off the film on the battery cells at the film-peeling stations.

[0007] The above technical solution further includes a material feeding module; The unloading module includes a second positioning platform; the conveying mechanism is used to transport the battery cells from the multiple film-tearing stations to the second positioning platform; the second positioning platform is used to adjust the spacing between the multiple battery cells to a second preset spacing; The second positioning platform includes at least one of the positioning mechanisms.

[0008] In the above technical solution, the positioning component further includes a push block and two clamping blocks; the push block is slidably mounted on the positioning base plate, and the push block is used to push the battery cell to position from one end in the length direction of the battery cell; The two clamping blocks are located at opposite ends in the width direction of the battery cell, and at least one of the clamping blocks is slidably mounted on the positioning base plate to clamp and position the battery cell; at least one of the clamping blocks is provided with a positioning edge for positioning the battery cell from the other end in the length direction of the battery cell.

[0009] In the above technical solution, the positioning mechanism further includes a first driving device and a second driving device; The first driving device is connected to the push block to drive the push block to reciprocate along the length direction of the battery cell; and a first elastic element is provided between the first driving device and the push block. The second driving device is connected to the clamping block that is slidably mounted on the positioning base plate to drive the clamping block to reciprocate along the width direction of the battery cell; and a second elastic element is provided between the second driving device and the clamping block.

[0010] In the above technical solution, the film-tearing mechanism further includes a film-opening air knife and a gripper assembly; The film-opening air knife is adjacent to the film-tearing station, and the film-opening air knife is positioned opposite to the battery cell at the film-tearing station; the film-opening air knife is used to blow dry airflow onto the battery cell to cause the edge of the film to curl up. The gripper assembly is disposed adjacent to the film-tearing station, and the gripper assembly is used to hold the film so that the film is detached from the battery cell.

[0011] In the above technical solution, the gripper assembly further includes a film-tearing gripper, a transfer gripper, and a film-discarding gripper; The tearing claw is used to hold the raised edge of the coating, and the tearing claw can reciprocate along the length of the cell to separate the coating from one side of the cell. The transfer gripper is used to hold the middle part of the film, and when the conveying mechanism transports the battery cells at the multiple film-tearing stations to the second positioning platform, the transfer gripper can move away from the battery cell so that the film is separated from the other side of the battery cell; the transfer gripper can reciprocate between the battery cell and the discarding gripper to transfer the film to the discarding gripper. The discarding gripper is used to hold the film from the transfer gripper, and the discarding gripper is opposite to the waste box to discard the film into the waste box.

[0012] In the above technical solution, the conveying mechanism further includes a conveying drive device, a first picking component, and a second picking component; The first positioning platform, the film-tearing platform, and the second positioning platform are arranged sequentially along a preset direction; the conveying drive device is connected to the first picking component and the second picking component to synchronously drive the first picking component and the second picking component to reciprocate along the preset direction. The first pickup component and the second pickup component are spaced apart along the preset direction; the first pickup component reciprocates between the first positioning platform and the film-tearing platform to transport multiple battery cells at the first positioning platform to multiple film-tearing stations; the second pickup component reciprocates synchronously between the film-tearing platform and the second positioning platform to transport multiple battery cells at the film-tearing stations to the second positioning platform.

[0013] In the above technical solution, the film-tearing platform further includes a mounting base and multiple adsorption base plates; The adsorption base plate is provided with a plurality of adsorption holes, which are spaced apart along the width direction of the battery cell to form a plurality of film-peeling stations; Multiple adsorption base plates are sequentially mounted on the mounting base along the length direction of the battery cell, and adsorption holes are correspondingly arranged on the multiple adsorption base plates; the mounting positions of the multiple adsorption base plates are adjustable along the length direction of the battery cell.

[0014] In the above technical solution, the feeding module further includes a feeding platform and a first transfer mechanism. The feeding platform is used to place a full-load pallet; the first transfer mechanism is used to transfer multiple battery cells carried on the full-load pallet to the first positioning platform; the feeding platform includes a feeding conveyor belt, a feeding support, and a first lifting drive device; the feeding conveyor belt is used to transport the full-load pallet to the feeding support; the first lifting drive device is used to drive the feeding support to reciprocate between the feeding conveyor belt and the feeding position, so as to raise the full-load pallet transported by the feeding conveyor belt to the feeding position; The unloading module further includes an unloading platform and a second transfer mechanism. The unloading platform is used to place an empty pallet. The second transfer mechanism is used to transfer multiple battery cells from the second positioning platform to the empty pallet. The unloading platform includes an unloading conveyor belt, an unloading support, and a second lifting drive device. The second lifting drive device is used to drive the unloading support to reciprocate between the unloading position and the unloading conveyor belt to lower the full pallet at the unloading position to the unloading conveyor belt. The unloading conveyor belt is used to transport the full pallet to the next process.

[0015] The above technical solution further includes a transfer module; The transfer module reciprocates between the loading platform and the unloading platform to sequentially transfer empty pallets generated at the loading platform to the unloading platform; A buffer platform is also provided between the loading platform and the unloading platform. The transfer module can move to the buffer platform to transfer excess empty pallets to the buffer platform.

[0016] This application also provides a battery production system, including the film-peeling equipment described above.

[0017] Compared with the prior art, the beneficial effects of this application are as follows: The film-removing equipment provided in this application can load small-sized battery cells loaded in a tray onto the film-removing mechanism, and can accurately position the battery cells before film removal, ensuring that the film-removing mechanism can accurately remove the film. After the film on the battery cells is removed, the battery cells can be repositioned so that they can be put back into the empty tray and then transferred to the next process, thereby ensuring a reliable and efficient battery production process.

[0018] This application also provides a battery production system, including the film-peeling equipment described in the above scheme. Based on the above analysis, it is clear that the battery production system also possesses the aforementioned beneficial effects, which will not be elaborated upon further here. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of the film-tearing device provided in this application; Figure 2 A schematic diagram of the structure of the loading platform (unloading platform) provided in this application; Figure 3 A structural schematic diagram of the first transfer mechanism (second transfer mechanism) provided for this application; Figure 4 A schematic diagram of the structure of the first positioning platform (second positioning platform) provided in this application; Figure 5 This is a schematic diagram of the structure of the film-peeling module provided in this application; Figure 6 This is a schematic diagram of the gripper assembly provided in this application; Figure 7 A schematic diagram of the transfer gripper provided in this application; Figure 8 A schematic diagram of the caching platform provided in this application.

[0021] In the diagram: 101, film-tearing module; 102, loading platform; 103, first transfer mechanism; 104, first positioning platform; 105, loading conveyor belt; 106, loading support; 107, first lifting drive device; 108, pickup suction cup; 109, battery cell; 110, film-tearing platform; 111, unloading platform; 112, second transfer mechanism; 113, second positioning platform; 114, unloading conveyor belt; 115, unloading support; 116, second lifting drive device; 117, positioning mechanism; 118, push block; 119, clamping block; 120, first drive device; 121. Second drive unit; 122. Film opening air knife; 123. Film tearing gripper; 124. Transfer gripper; 125. Film discarding gripper; 126. Film covering; 127. Fixing base; 128. Gripper drive unit; 129. Push-pull block; 130. Clamping assembly; 131. Clamping component; 132. First connecting rod; 133. Second connecting rod; 134. Transport drive unit; 135. First pickup assembly; 136. Second pickup assembly; 137. Transfer module; 138. Buffer platform; 139. Defective product conveyor belt; 140. Buffer support component; 141. Third lifting drive unit. Detailed Implementation

[0022] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] Example 1 See Figures 1 to 8 As shown, the film-tearing device provided in this application includes a feeding module, a film-tearing module 101, and a discharging module.

[0026] The loading module includes a loading platform 102, a first transfer mechanism 103, and a first positioning platform 104. The loading platform 102 includes a loading conveyor belt 105, a loading support 106, and a first lifting drive device 107. The loading conveyor belt 105 transports a full pallet loaded with small-sized battery cells 109 (length between 25mm and 60mm, width between 10mm and 40mm, and thickness between 1.5mm and 12mm) to the loading support 106. The first lifting drive device 107 drives the loading support 106 to reciprocate between the loading conveyor belt 105 and the loading position, thereby raising the full pallet transported by the loading conveyor belt 105 to the loading position. The full pallet located at the loading position is within the movement range of the first transfer mechanism 103, enabling the first transfer mechanism 103 to transfer multiple battery cells 109 carried on the full pallet to the first positioning platform 104.

[0027] The film-peeling equipment is also equipped with a fully enclosed upper and lower integrated sheet metal frame. Figure 1 (Not shown in the image), the first transfer mechanism 103 is an inverted six-axis robot, installed on the top inner side of the frame. For example... Figure 3As shown, the inverted six-axis robot is equipped with four sets of pick-up suction cups 108. The inverted six-axis robot can drive the four sets of pick-up suction cups 108 to reciprocate between the loading position and the first positioning platform 104, so that the four sets of pick-up suction cups 108 can sequentially pick up four battery cells 109 on the full material tray and simultaneously place the four battery cells 109 on the first positioning platform 104. At this time, the distance between the four battery cells 109 is the distance between the four sets of pick-up suction cups 108.

[0028] The film-peeling module 101 includes a film-peeling platform 110, a conveying mechanism, and a film-peeling mechanism. The film-peeling platform 110 has multiple film-peeling stations for fixing battery cells 109. The film-peeling mechanism is used to peel off the film 126 from the battery cells 109 at each film-peeling station. The distance between the multiple film-peeling stations is a first preset distance, which is adjusted according to the model and size of the fixed battery cells 109. The conveying mechanism is used to transport the multiple battery cells 109 from the first positioning platform 104 to the multiple film-peeling stations. Before the battery cells 109 are conveyed, the first positioning platform 104 can adjust the distance between the multiple battery cells 109 to the first preset distance to ensure accurate positioning of the battery cells 109 during subsequent film peeling.

[0029] The unloading module has a similar structure to the loading module. The unloading module includes an unloading platform 111, a second transfer mechanism 112, and a second positioning platform 113. After the film 126 of the battery cell 109 is peeled off at the film-peeling station, the transport mechanism can transport multiple battery cells 109 to the second positioning platform 113. At this time, the spacing between the four battery cells 109 on the second positioning platform 113 is a first preset spacing.

[0030] Specifically, the second transfer mechanism 112 is an inverted six-axis robot, installed on the top inner side of the frame. For example... Figure 3 As shown, the inverted six-axis robot is also equipped with four sets of pick-up suction cups 108. The inverted six-axis robot can drive the four sets of pick-up suction cups 108 to reciprocate between the second positioning platform 113 and the unloading platform 111. The unloading platform 111 is used to place empty trays. The inverted six-axis robot can transfer the battery cells 109 on the second positioning platform 113 to the empty trays on the unloading platform 111, so as to realize the centralized storage of the battery cells 109 after the film is torn off.

[0031] Before the four sets of pickup suction cups 108 pick up the four battery cells 109 on the second positioning platform 113, the second positioning platform 113 first adjusts the spacing between the multiple battery cells 109 to a second preset spacing, which is the spacing between the four sets of pickup suction cups 108, so that the four sets of pickup suction cups 108 can pick up the four battery cells 109 on the second positioning platform 113 simultaneously.

[0032] More specifically, the unloading platform 111 includes an unloading conveyor belt 114, an unloading support 115, and a second lifting drive device 116. The second lifting drive device 116 drives the unloading support 115 to reciprocate between the unloading position and the unloading conveyor belt 114, so as to lower the full pallet at the unloading position to the unloading conveyor belt 114. The full pallet at the unloading position is within the movement range of the second transfer mechanism 112, which allows the second transfer mechanism 112 to sequentially place multiple battery cells 109 onto the support positions on the empty pallet. After the pallet is full, the second lifting drive device 116 can drive the unloading support 115 to descend to the unloading conveyor belt 114, so that the unloading conveyor belt 114 transports the full pallet to the next process.

[0033] The film-removing equipment provided in this application can feed battery cells 109 loaded in a tray to the film-removing mechanism, and can accurately position the battery cells 109 before the film is removed, ensuring that the film-removing mechanism can accurately remove the film. After the film 126 of the battery cells 109 is removed, the battery cells 109 can be put back into the empty tray so that the battery cells 109 can be transferred to the next process, thereby ensuring a reliable and efficient battery production process.

[0034] In an optional embodiment, both the first positioning platform 104 and the second positioning platform 113 include at least one positioning mechanism 117. The positioning mechanism 117 includes a positioning base plate and at least one positioning component. The positioning base plate is used to support the battery cell 109. The positioning component includes a push block 118 and two clamping blocks 119. The push block 118 is slidably mounted on the positioning base plate and is used to push the battery cell 109 to position it from one end in the length direction of the battery cell 109. The two clamping blocks 119 are located at both ends in the width direction of the battery cell 109, and at least one of the clamping blocks 119 is slidably mounted on the positioning base plate to clamp and position the battery cell 109. At least one clamping block 119 is provided with a positioning edge, which is used to position the battery cell 109 from the other end in the length direction of the battery cell 109.

[0035] In this embodiment, such as Figure 4 As shown, both the first positioning platform 104 and the second positioning platform 113 include two positioning mechanisms 117, and each positioning mechanism 117 has two positioning components on its positioning base plate. Each positioning component forms a positioning station. Both the first positioning platform 104 and the second positioning platform 113 can simultaneously position four battery cells 109. The positioning components include a push block 118 and two clamping blocks 119. The positioning edges of the push block 118 and the clamping blocks 119 can position the battery cell 109 from the length direction of the battery cell 109, and the two clamping blocks 119 can position the battery cell 109 from the width direction of the battery cell 109, so that the battery cell 109 can be moved to a position matching the film-tearing station, ensuring the accurate position of the battery cell 109 during subsequent film-tearing.

[0036] In an optional embodiment, the positioning mechanism 117 further includes a first driving device 120 and a second driving device 121; the first driving device 120 is connected to the push block 118 to drive the push block 118 to reciprocate along the length direction of the battery cell 109; and a first elastic element is provided between the first driving device 120 and the push block 118; the second driving device 121 is connected to the clamping block 119 slidably mounted on the positioning base plate to drive the clamping block 119 to reciprocate along the width direction of the battery cell 109; and a second elastic element is provided between the second driving device 121 and the clamping block 119.

[0037] In this embodiment, to prevent the positioning components from damaging the battery cell 109 during positioning, a first elastic element is provided between the first driving device 120 and the push block 118, and a second elastic element is provided between the second driving device 121 and the clamping block 119 to provide a buffering effect. Specifically, the push block 118 is mounted on the positioning base plate via a guide rail, and the guide rail is oriented along the length of the battery cell 109. The push blocks 118 of the two positioning components share one first driving device 120, so that the first driving device 120 can synchronously push the two push blocks 118 to reciprocate. The first driving device 120 is connected to the two push blocks 118 via a first connecting member, and a spring is provided between the first connecting member and the push block 118 to buffer the force exerted by the push block 118 on the battery cell 109.

[0038] Furthermore, one of the two clamping blocks 119 is fixedly connected to the positioning base plate by bolts, and the clamping block 119 and / or the positioning base plate are provided with elongated holes to allow the position of the clamping block 119 in the width direction of the battery cell 109 to be adjustable; the other clamping block 119 is also mounted on the positioning base plate via a guide rail, and the guide rail is directed in the width direction of the battery cell 109. The two positioning components, with clamping blocks 119 located on the same side of the battery cell 109, are slidably mounted on the positioning base plate and share a second drive device 121, so that the second drive device 121 can synchronously drive the two clamping blocks 119 to reciprocate. The second drive device 121 is connected to the two clamping blocks 119 via a second connector, and a spring is provided between the second connector and the clamping blocks 119 to buffer the force exerted by the clamping blocks 119 on the battery cell 109.

[0039] Preferably, a limiting rod is further provided between the second connecting member and the clamping block 119. The limiting rod includes a rod portion and a baffle. A spring is sleeved on the rod portion, one end of which is fixedly connected to the second connecting member, and the other end of the limiting rod slides through the clamping block 119. The baffle is located at the end of the clamping block 119 away from the second connecting member and is connected to the limiting rod. When the second driving device 121 drives the clamping block 119 closer to the battery cell 109, the limiting rod slides in the clamping block 119 to compress the spring, so that the spring force acts on the clamping block 119. When the second driving device 121 drives the clamping block 119 away from the battery cell 109, the limiting rod slides in the clamping block 119 to abut against the clamping block 119, so that the baffle can drive the clamping block 119 to move. The above structure can avoid excessive stretching of the spring and extend its service life.

[0040] In an optional embodiment, the film-tearing mechanism includes a film-opening air knife 122 and a gripper assembly; the film-opening air knife 122 is adjacent to the film-tearing station and is disposed opposite to the battery cell 109 on the film-tearing station; the film-opening air knife 122 is used to blow dry airflow onto the battery cell 109 to make the edge of the film 126 curl up; the gripper assembly is disposed adjacent to the film-tearing station and is used to grip the film 126 to make the film 126 detach from the battery cell 109.

[0041] In this embodiment, to avoid damage to the surface of the battery cell 109 and the resulting bulges and unevenness during the peeling process, a dry airflow is first blown onto the battery cell 109 by the peeling air knife 122 to at least peel the edge of the coating 126 off the battery cell 109. The raised edge of the coating 126 provides a pick-up point for the gripper assembly, making it easy for the gripper assembly to completely peel off the coating 126. Furthermore, the non-contact peeling method of the peeling air knife 122 will not damage the surface of the battery cell 109.

[0042] In an optional embodiment, since the coating 126 covers both sides of the battery cell 109 in a U-shape along its length, when the gripper assembly peels the coating off the battery cell 109 located on the peeling platform 110, it first needs to peel the coating 126 off the upper side of the battery cell 109 from above. Then, the conveying mechanism picks up the battery cell 109 so that the bottom of the battery cell 109 leaves the peeling platform 110, allowing the gripper assembly to peel the coating 126 off the lower side of the battery cell 109. The gripper assembly includes a peeling gripper 123, a transfer gripper 124, and a discard gripper 125. The three grippers work together to achieve the gradual peeling and discarding of the coating 126.

[0043] First, before the film is torn off by the gripper assembly, the film-opening air knife 122 can blow the end of the film 126 away from the battery cell 109 along its length. During film tearing, the film-tearing gripper 123 moves from its initial position (… Figure 6The tear-off gripper 123 moves to the clamping position, where it can clamp the raised end of the film 126; then the tear-off gripper 123 moves in the opposite direction to move from the clamping position to the initial position. Since the direction of movement of the tear-off gripper 123 is the length direction of the cell 109 ( Figure 6 As shown in direction A, during the process of the film-tearing gripper 123 resetting to the initial position, the film 126 can be simultaneously separated from the upper side of the battery cell 109. This allows the U-shaped film 126 to be flattened.

[0044] Because the film 126 is a low-density transparent PET film, and the film 126 on the small-sized battery cell 109 is even smaller and lighter, it is easily attracted to the surface of the battery cell 109 due to static electricity during the film removal process. To address the problem of film removal during the small-sized battery cell 109, after the film 126 separates from the upper side of the battery cell 109, the transfer gripper 124 is raised to the battery cell 109 to hold the middle of the flattened film 126. Subsequently, when the transport mechanism transports the battery cells 109 from multiple film removal stations to the second positioning platform 113, the transport mechanism first lifts the battery cell 109 and then moves it horizontally to the second positioning platform 113. At the same time, the film removal gripper 123 is released and the transfer gripper 124 is lowered synchronously to move away from the battery cell 109, so that the film 126 separates from the lower side of the battery cell 109. With the combined action of the conveying mechanism and the transfer gripper 124, the coating 126 can be completely detached from the battery cell 109, preventing the coating 126 from repeatedly sticking to the surface of the battery cell 109 when the battery cell 109 is moved.

[0045] Because the transfer gripper 124 contacts the adhesive side of the coating 126 when it grips it, the coating 126 will stick to the transfer gripper 124, and the coating 126 cannot be discarded by simply releasing the transfer gripper 124. This application solves this problem by setting the transfer gripper 124 to reciprocate between the battery cell 109 and the discarding gripper 125, which can transfer the coating 126 to the discarding gripper 125 and then discard it. Since the transfer gripper 124 grips the middle of the coating 126, the adhesive sides of the coating 126 will stick together due to airflow during the descent of the transfer gripper 124. When the transfer gripper 124 descends to the discarding gripper 125, the discarding gripper 125 can grip the non-adhesive side of the coating 126, the transfer gripper 124 is released, and the discarding gripper 125 can pull the coating 126 away from the transfer gripper 124. When the film disposal gripper 125 is aligned with the waste bin, the film 126 can be discarded into the waste bin.

[0046] Preferably, a sensor can be installed at the film-discarding gripper 125 to detect the actual position of the film-covered 126 and determine whether the film-covered 126 has reached the collection area. If the film-covered 126 is not detected to have reached the collection area, an alarm will be issued to prevent the film-covered 126 from flying away under the influence of static electricity and the airflow of the film-opening air knife 122, thus ensuring the controllable success rate of tearing the film off the battery cell 109.

[0047] like Figure 7 As shown, the transfer gripper 124 includes a fixed base 127, a gripper drive device 128, a push-pull block 129, and a clamping assembly 130. The clamping assembly 130 includes a clamping member 131, a first connecting rod 132, and a second connecting rod 133. The gripper drive device 128 and the clamping member 131 are mounted on the fixed base 127, and the drive end of the gripper drive device 128 is connected to the push-pull block 129. One end of the first connecting rod 132 is hinged to the push-pull block 129, one end of the second connecting rod 133 is hinged to the middle of the first connecting rod 132, and the other end of the second connecting rod 133 is hinged to the clamping member 131. The push-pull block 129, the first connecting rod 132, and the second connecting rod 133 form a linkage mechanism. The gripper drive device 128 drives the push-pull block 129 to rise and fall, causing the end of the first connecting rod 132 away from the push-pull block 129 to swing, thereby moving closer to or away from the clamping member 131, thus realizing the clamping and releasing actions. Both sides of the push-pull block 129 are provided with clamping components 130 so that the gripper drive device 128 can drive the two clamping components 130 to move synchronously, making the device structure more compact.

[0048] In an optional embodiment, the conveying mechanism includes a conveying drive device 134, a first pickup component 135, and a second pickup component 136. The first positioning platform 104, the film-tearing platform 110, and the second positioning platform 113 are aligned along a preset direction ( Figure 1 and Figure 5 The components (direction B shown in the diagram, the preset direction being the length direction of the battery cell 109) are arranged sequentially, and the distance between the first positioning platform 104 and the film-tearing platform 110 is adjustable, as is the distance between the second positioning platform 113 and the film-tearing platform 110. The conveying drive device 134 is connected to the first pickup component 135 and the second pickup component 136 to synchronously drive the first pickup component 135 and the second pickup component 136 to reciprocate along the preset direction.

[0049] like Figure 5As shown, the first pickup component 135 and the second pickup component 136 are spaced apart along a preset direction. The first pickup component 135 is equipped with four sets of pickup suction cups 108. The first pickup component 135 reciprocates between the first positioning platform 104 and the film-peeling platform 110, so that the four sets of pickup suction cups 108 transport the four battery cells 109 positioned at the first positioning platform 104 to multiple film-peeling stations. The second pickup component 136 is also equipped with four sets of pickup suction cups 108. While the first pickup component 135 reciprocates between the first positioning platform 104 and the film-peeling platform 110, the second pickup component 136 simultaneously reciprocates between the film-peeling platform 110 and the second positioning platform 113, so as to transport the peeled battery cells 109 at the four film-peeling stations to the second positioning platform 113. The linkage structure formed by the first pickup component 135 and the second pickup component 136 can accelerate the turnover speed of the battery cells 109 and improve the film-peeling efficiency.

[0050] In an optional embodiment, the film-peeling platform 110 includes a mounting base and multiple adsorption base plates. Each adsorption base plate has multiple adsorption holes spaced apart along the width of the battery cell 109 to form multiple film-peeling stations. The adsorption holes can adsorb the battery cell 109 from the bottom, achieving reliable positioning of the battery cell 109 without covering its sides or top, thus not affecting the film peeling process.

[0051] Furthermore, multiple adsorption base plates are sequentially installed on the mounting base along the length of the battery cell 109, and the adsorption holes on the multiple adsorption base plates are correspondingly arranged; the installation position of the multiple adsorption base plates is adjustable along the length of the battery cell 109. When adsorbing and positioning battery cells 109 of different sizes, the spacing between the adsorption base plates can be adjusted, thereby adjusting the adsorption range of the adsorption holes to adapt to the size of the battery cell 109, thus improving the applicability of the device.

[0052] Example 2 The film-tearing device in this embodiment is an improvement on the above embodiments. The technical content disclosed in the above embodiments will not be described again, and the content disclosed in the above embodiments also belongs to the content disclosed in this embodiment.

[0053] See Figure 1 As shown, in an optional embodiment, the film-tearing device further includes a transfer module 137; the transfer module 137 reciprocates between the loading platform 102 and the unloading platform 111 to sequentially transfer empty pallets generated at the loading platform 102 to the unloading platform 111; a buffer platform 138 is also provided between the loading platform 102 and the unloading platform 111, and the transfer module 137 can move to the buffer platform 138 to transfer excess empty pallets to the buffer platform 138.

[0054] In this embodiment, initially, an empty pallet is placed at the unloading platform 111. The battery cells 109 loaded in the full pallet placed at the loading platform 102 are transferred to the empty pallet at the unloading platform 111 after the film is removed by the film-removing module 101. Ideally, all the battery cells 109 in the full pallet at the loading platform 102 are transferred to the empty pallet at the unloading platform 111, thus creating an empty pallet at the loading platform 102. Subsequently, the transfer module 137 sequentially transfers the empty pallets generated at the loading platform 102 to the unloading platform 111, thereby achieving pallet recycling.

[0055] In some cases, defective cells 109 may exist after the film is removed. These defective cells need to be conveyed to the defective product conveyor belt 139, resulting in the qualified cells 109 after film removal not filling the empty pallets generated at the loading platform 102. The transfer module 137 can transfer the excess empty pallets to the buffer platform 138 for placement. The buffer platform 138 includes a buffer support 140 and a third lifting drive device 141. The third lifting drive device 141 is used to drive the buffer support 140 to rise and fall so that the buffer support 140 is within the coverage area of ​​the transfer module 137.

[0056] Example 3 Embodiment 3 of this application provides a battery production system, including the film-peeling device of any of the above embodiments, and thus has all the beneficial technical effects of the film-peeling device of any of the above embodiments, which will not be repeated here.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application. In addition, those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are meant to be within the scope of this application and form different embodiments.

Claims

1. A film-tearing device, characterized in that, Includes a feeding module and a film-tearing module (101); The loading module includes a first positioning platform (104); the first positioning platform (104) is used to adjust the spacing between multiple battery cells (109) to a first preset spacing; the first positioning platform (104) includes at least one positioning mechanism (117); the positioning mechanism (117) includes a positioning base plate and at least one positioning component; the positioning base plate is used to support the battery cell (109); the positioning component is used to push the side of the battery cell (109) to position the battery cell (109); The film-peeling module (101) includes a film-peeling platform (110), a conveying mechanism, and a film-peeling mechanism; the film-peeling platform (110) is provided with multiple film-peeling stations, and the distance between the multiple film-peeling stations is a first preset distance; the conveying mechanism is used to transport multiple battery cells (109) at the first positioning platform (104) to the multiple film-peeling stations; the film-peeling mechanism is used to peel off the film (126) on the battery cells (109) at the film-peeling stations; The positioning component includes a push block (118) and two clamping blocks (119); the push block (118) is slidably mounted on the positioning base plate, and the push block (118) is used to push the battery cell (109) to position it from one end in the length direction of the battery cell (109); Two clamping blocks (119) are located at opposite ends of the width of the battery cell (109), and at least one of the clamping blocks (119) is slidably mounted on the positioning base plate to clamp and position the battery cell (109); at least one of the clamping blocks (119) is provided with a positioning edge for positioning the battery cell (109) from the other end of the length of the battery cell (109).

2. The film-tearing device according to claim 1, characterized in that, It also includes the material feeding module; The unloading module includes a second positioning platform (113); the conveying mechanism is used to transport the battery cells (109) at the multiple film-tearing stations to the second positioning platform (113); the second positioning platform (113) is used to adjust the spacing between the multiple battery cells (109) to a second preset spacing; The second positioning platform (113) includes at least one of the positioning mechanisms (117).

3. The film-tearing device according to claim 2, characterized in that, The positioning mechanism (117) further includes a first driving device (120) and a second driving device (121); The first driving device (120) is connected to the push block (118) to drive the push block (118) to reciprocate along the length direction of the battery cell (109); and a first elastic element is provided between the first driving device (120) and the push block (118); The second driving device (121) is connected to the clamping block (119) which is slidably mounted on the positioning base plate, so as to drive the clamping block (119) to reciprocate along the width direction of the battery cell (109); and a second elastic element is provided between the second driving device (121) and the clamping block (119).

4. The film-tearing device according to claim 3, characterized in that, The film-tearing mechanism includes a film-opening air knife (122) and a gripper assembly; The film-opening air knife (122) is adjacent to the film-tearing station, and the film-opening air knife (122) is arranged opposite to the battery cell (109) on the film-tearing station; the film-opening air knife (122) is used to blow dry airflow onto the battery cell (109) to make the edge of the film (126) curl up; The gripper assembly is disposed adjacent to the film-tearing station, and the gripper assembly is used to grip the film (126) so that the film (126) is detached from the battery cell (109).

5. The film-tearing device according to claim 4, characterized in that, The gripper assembly includes a film-tearing gripper (123), a transfer gripper (124), and a film-discarding gripper (125); The tear-off gripper (123) is used to hold the raised edge of the coating (126), and the tear-off gripper (123) can reciprocate along the length direction of the battery cell (109) to separate the coating (126) from one side of the battery cell (109); The transfer gripper (124) is used to grip the middle of the film (126), and when the conveying mechanism transports the battery cells (109) at the plurality of film-tearing stations to the second positioning platform (113), the transfer gripper (124) can move away from the battery cells (109) so that the film (126) is separated from the other side of the battery cells (109); the transfer gripper (124) can reciprocate between the battery cells (109) and the discard film gripper (125) to transfer the film (126) to the discard film gripper (125); The discarding gripper (125) is used to hold the film (126) from the transfer gripper (124), and the discarding gripper (125) is opposite to the waste box to discard the film (126) into the waste box.

6. The film-tearing device according to claim 2, characterized in that, The conveying mechanism includes a conveying drive device (134), a first pickup component (135), and a second pickup component (136); The first positioning platform (104), the film-tearing platform (110), and the second positioning platform (113) are arranged sequentially along a preset direction; the conveying drive device (134) is connected to the first picking component (135) and the second picking component (136) to synchronously drive the first picking component (135) and the second picking component (136) to reciprocate along the preset direction; The first pickup component (135) and the second pickup component (136) are spaced apart along the preset direction; the first pickup component (135) reciprocates between the first positioning platform (104) and the film-tearing platform (110) to transport a plurality of the battery cells (109) at the first positioning platform (104) to a plurality of the film-tearing stations; the second pickup component (136) reciprocates synchronously between the film-tearing platform (110) and the second positioning platform (113) to transport the battery cells (109) at a plurality of the film-tearing stations to the second positioning platform (113).

7. The film-tearing device according to claim 1, characterized in that, The film-tearing platform (110) includes a mounting base and multiple adsorption base plates; The adsorption base plate is provided with a plurality of adsorption holes, which are spaced apart along the width direction of the battery cell (109) to form a plurality of film-peeling stations; Multiple adsorption base plates are sequentially installed on the mounting base along the length direction of the battery cell (109), and adsorption holes are correspondingly provided on the multiple adsorption base plates; the installation position of the multiple adsorption base plates is adjustable along the length direction of the battery cell (109).

8. The film-tearing device according to claim 2, characterized in that, The loading module further includes a loading platform (102) and a first transfer mechanism. The loading platform (102) is used to place a full pallet. The first transfer mechanism (103) is used to transfer multiple battery cells (109) carried on the full pallet to the first positioning platform (104). The loading platform (102) includes a loading conveyor belt (105), a loading support (106), and a first lifting drive device (107). The loading conveyor belt (105) is used to transport the full pallet to the loading support (106). The first lifting drive device (107) is used to drive the loading support (106) to reciprocate between the loading conveyor belt (105) and the loading position, so as to raise the full pallet transported by the loading conveyor belt (105) to the loading position. The unloading module further includes an unloading platform (111) and a second transfer mechanism (112). The unloading platform (111) is used to place an empty pallet. The second transfer mechanism (112) is used to transfer multiple battery cells (109) on the second positioning platform (113) to the empty pallet. The unloading platform (111) includes an unloading conveyor belt (114), an unloading support (115), and a second lifting drive device (116). The second lifting drive device (116) is used to drive the unloading support (115) to reciprocate between the unloading position and the unloading conveyor belt (114) to lower the pallet filled at the unloading position to the unloading conveyor belt (114). The unloading conveyor belt (114) is used to transport the filled pallet to the next process.

9. The film-tearing device according to claim 8, characterized in that, It also includes a transfer module (137); The transfer module (137) reciprocates between the loading platform (102) and the unloading platform (111) to sequentially transfer empty pallets generated at the loading platform (102) to the unloading platform (111); A buffer platform (138) is also provided between the loading platform (102) and the unloading platform (111). The transfer module (137) can move to the buffer platform (138) to transfer excess empty pallets to the buffer platform (138).

10. A battery production system, characterized in that, The film-tearing device includes any one of claims 1 to 9.

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