Pole piece rejecting and repairing mechanism, pole piece rejecting and repairing device and lamination stacking machine

Abstract

The utility model relates to the technical field of lithium battery manufacturing, and discloses a pole piece rejecting and repairing mechanism, a pole piece rejecting and repairing device and a laminating machine. The pole piece rejecting and patching mechanism comprises a fixing piece, a patching piece and a patching piece, the waste box is movably arranged on the fixing part and is suitable for storing unqualified pole pieces; the material supplementing box is movably arranged on the fixing piece, and the material supplementing box is suitable for storing a plurality of qualified pole pieces; and the driving mechanism is connected with the waste material box and the material supplementing box and drives the waste material box and the material supplementing box to move synchronously. The waste material box and the material supplementing box are simultaneously driven to move through one driving mechanism, only one driving mechanism is needed, the number of the driving mechanisms is reduced, the structure is simplified, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery manufacturing, and in particular to a pole piece rejecting and patching mechanism, a pole piece rejecting and patching device and a stacking machine. Background Art

[0002] During the production process of lithium battery stacking, in order to ensure the product qualification rate, a CCD vision system will be used to detect defects and alignment of all pole pieces. If unqualified pole pieces are found, they need to be thrown into the waste bin.

[0003] In order to improve the efficiency of the whole machine, a solution of stacking multiple battery cells at a time is adopted. The sheet-taking robot picks up multiple sheets at a time. If unqualified sheets are detected, they need to be thrown away and replaced with qualified sheets.

[0004] In the prior art, a single-station waste rejection and patching mechanism includes: a feeding mechanism, a feeding mechanism, a correction mechanism, a transport mechanism and a material rejection mechanism. The feeding mechanism includes a first linear module and a load-bearing component, and the load-bearing component is connected to the moving part of the first linear module. The first linear module is arranged on one side of the feeding mechanism. The material rejection mechanism includes a bidirectional linear module and a receiving component, and the receiving component is connected to the first moving part of the bidirectional linear module; the bidirectional linear module is arranged on one side of the correction mechanism.

[0005] The above-mentioned patch mechanism and waste rejection mechanism both include a linear module and a bearing component, and have a relatively complex structure and high cost. Utility Model Content

[0006] In view of this, the utility model provides a pole piece rejecting and patching mechanism, a pole piece rejecting and patching device and a stacking machine to solve the problem that the patching mechanism and the rejecting mechanism both include a linear module and a bearing component, resulting in a relatively complex structure.

[0007] In the first aspect, the utility model provides a mechanism for rejecting and replenishing pole pieces, comprising: a fixing part, which is fixedly arranged; a waste box, which is movably arranged on the fixing part, and is suitable for storing unqualified pole pieces; a replenishing box, which is movably arranged on the fixing part, and is suitable for storing a number of qualified pole pieces; a driving mechanism, which is connected to the waste box and the replenishing box, and the driving mechanism drives the waste box and the replenishing box to move synchronously.

[0008] Beneficial effect: the waste box and the replenishing box are driven to move simultaneously by one driving mechanism, and only one set of driving mechanism is needed, which reduces the number of driving mechanisms, simplifies the structure and saves costs.

[0009] In an optional embodiment, the electrode sheet rejection and patching mechanism also includes a patch detection mechanism, which is arranged on one side of the material filling box. The patch detection mechanism is suitable for detecting the number of electrode sheets in the material filling box grabbed by the loading and transporting mechanism each time.

[0010] Beneficial effect: The patch detection mechanism detects the number of pole pieces in the patch box grabbed by the feeding and conveying mechanism each time, effectively avoiding the situation where the feeding and conveying mechanism grabs multiple pieces.

[0011] In an optional embodiment, the patch detection mechanism is a thickness detection mechanism.

[0012] Beneficial effect: The quantity of the electrode pieces can be determined by detecting the thickness of the electrode pieces in the feeding box grabbed by the feeding and conveying mechanism each time, and the detection is convenient.

[0013] In an optional implementation, the thickness detection mechanism is a through-beam ultrasonic sensor.

[0014] Beneficial effects: The through-beam ultrasonic sensor has the advantages of simple structure, low cost and high sensitivity.

[0015] In an optional embodiment, the electrode sheet rejection and patching mechanism also includes a electrode sheet brush arranged on at least one side of the feed box, the bristles of the electrode sheet brush extend into the cavity of the feed box, and the electrode sheet brush is suitable for brushing off the electrode sheet located below the electrode sheet taken out from the feed box when the loading and transporting mechanism takes out a electrode sheet from the feed box.

[0016] Beneficial effect: When the loading and transporting mechanism takes the electrode out of the feeding box, at least one side of the electrode will pass through the electrode brush. If there are multiple electrode pieces stuck together, the electrode brush will brush them off, further preventing the loading and transporting mechanism from adsorbing multiple pieces.

[0017] In an optional embodiment, the electrode waste rejection and replenishment mechanism further includes a fixed plate, the waste box and the replenishment box are fixed on the fixed plate, and the fixed plate is connected to the driving mechanism.

[0018] Beneficial effect: The setting of the fixing plate is not only convenient for fixing the waste box and the feeding box, but also convenient for connecting with the driving mechanism.

[0019] In an optional embodiment, the driving mechanism includes a driving member and a transmission mechanism, and the driving member drives the waste box to move through the transmission mechanism.

[0020] Beneficial effect: Since the length of the stacking table is relatively long, it is easier to move the waste box through the driving member and the transmission mechanism.

[0021] In an optional embodiment, the driving member is fixed on the fixing member, and the transmission mechanism is a belt transmission mechanism, a chain transmission mechanism or a ball screw mechanism, or the driving member is fixed on the waste box, and the transmission mechanism is a rack and pinion mechanism.

[0022] In the second aspect, the utility model also provides a device for rejecting and patching electrodes, comprising: a stacking table; a loading and conveying mechanism, which is arranged corresponding to the stacking table to transport the electrodes to the stacking table; the above-mentioned electrode rejecting and patching mechanism is arranged on one side of the stacking table, and the electrode rejecting and patching mechanism is suitable for receiving unqualified electrodes transported by the loading and conveying mechanism and providing qualified electrodes; a electrode detection mechanism, which is suitable for detecting electrodes on the stacking table or on the loading and conveying mechanism; a controller, which is electrically connected to the loading and conveying mechanism, the electrode rejecting and patching mechanism and the electrode detection mechanism, and the controller is used to control the loading and conveying mechanism and the electrode rejecting and patching mechanism to reject and patch electrodes according to the presence of unqualified information in the detection information detected by the electrode detection mechanism, wherein the unqualified information includes the quantity information and position information of unqualified electrodes.

[0023] Beneficial effect: Through the cooperation of the electrode waste rejection and patching mechanism and the feeding and handling mechanism, flexible patching can be performed according to the missing pieces situation, thus simplifying the structure and reducing costs.

[0024] In a third aspect, the utility model further provides a laminating machine, comprising: the above-mentioned pole piece rejecting and patching device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A three-dimensional diagram of a pole piece rejecting and patching mechanism according to an embodiment of the utility model;

[0027] Figure 2 for Figure 1 The structural schematic diagram of the right side of the pole piece rejecting and patching mechanism shown;

[0028] Figure 3 for Figure 1 The structural schematic diagram of the left side of the pole piece rejecting and patching mechanism shown;

[0029] Figure 4 for Figure 1 The front view of the pole piece rejecting and patching mechanism shown;

[0030] Figure 5 for Figure 1 A top view of the pole piece rejecting and patching mechanism shown;

[0031] Figure 6 for Figure 1 The left side view of the pole piece rejecting and patching mechanism shown;

[0032] Figure 7 It is a partial three-dimensional diagram of a pole piece rejecting and patching device according to an embodiment of the utility model;

[0033] Figure 8 for Figure 7 The front view of the pole piece rejecting and patching device shown;

[0034] Fig. 9 for Figure 7 A top view of the pole piece rejecting and patching device shown;

[0035] Fig.10 for Figure 7 A side view of the pole piece rejection and patching device is shown.

[0036] Description of reference numerals:

[0037] 70. Material loading and handling mechanism;

[0038] 80. Electrode scrap removal and patching mechanism; 81. Positive electrode scrap removal and patching mechanism; 82. Negative electrode scrap removal and patching mechanism; 83. Fixing member; 84. Waste material box; 85. Driving mechanism; 851. Driving member; 852. Transmission mechanism; 86. Guide mechanism; 87. Refilling box; 88. Patch detection mechanism; 89. Electrode brush; 91. Fixing plate;

[0039] 130. Pole piece testing mechanism. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0041] Combine the following Figures 1 to 10 , describing an embodiment of the utility model.

[0042] According to an embodiment of the utility model, on the one hand, a pole piece rejecting and filling mechanism 80 is provided, comprising: a fixing member 83, a waste box 84, a filling box 87 and a driving mechanism 85, wherein the fixing member 83 is fixedly arranged; the waste box 84 is movably arranged on the fixing member 83, and the waste box 84 is suitable for storing unqualified pole pieces; the filling box 87 is movably arranged on the fixing member 83, and the filling box 87 is suitable for storing a number of qualified pole pieces; a driving mechanism 85 is connected to the waste box 84 and the filling box 87, and the driving mechanism 85 drives the waste box 84 and the filling box 87 to move synchronously.

[0043] The electrode waste rejection and replenishment mechanism 80 of this embodiment is applied to simultaneously drive the waste box 84 and the replenishment box 87 to move through a driving mechanism 85. Only one set of driving mechanisms 85 is needed, thereby reducing the number of driving mechanisms 85, simplifying the structure, and saving costs.

[0044] It should be noted that when stacking sheets on the stacking table, when there are unqualified sheets on the stacking table or the loading and conveying mechanism 70, the unqualified sheets are conveyed to the top of the fixing part 83 by the loading and conveying mechanism 70, and the driving mechanism 85 is controlled to drive the waste box 84 to move to the bottom of the unqualified sheets. The loading and conveying mechanism 70 throws the unqualified sheets into the waste box 84, and then the driving mechanism 85 drives the replenishing box 87 to move to the bottom of the corresponding loading and conveying mechanism 70, and the loading and conveying mechanism 70 absorbs qualified sheets from the replenishing box 87 until all unqualified sheets are replaced with qualified sheets, and then the loading and conveying mechanism 70 moves to the stacking table again for stacking. At this point, all the stacked sheets on the stacking table are qualified sheets, and the stacking machine enters the normal stacking process. For example, when a certain electrode on the stacking table is unqualified, the loading and conveying mechanism 70 is controlled to grab the unqualified electrode and convey the unqualified electrode to the top of the fixing member 83, the driving mechanism 85 is controlled to drive the waste box 84 to move to the bottom of the unqualified electrode on the fixing member 83, the loading and conveying mechanism 70 is controlled to put the grabbed unqualified electrode into the waste box 84, and then the driving mechanism 85 is controlled to drive the replenishment box 87 to move to the position where the waste box 84 just received the material, the loading and conveying mechanism 70 grabs the qualified electrode in the replenishment box 87, and controls the loading and conveying mechanism 70 to convey the qualified electrode to the stacking table for stacking; when the number of unqualified electrode on the stacking table is more than two, the loading and conveying mechanism 70 is controlled to grab all the unqualified electrode, and the driving mechanism 85 is controlled to drive the waste box 84 Move to the position corresponding to an unqualified electrode on the stacking table, control the loading and conveying mechanism 70 to put one of all the unqualified electrode pieces grabbed into the waste box 84, then control the driving mechanism 85 to drive the replenishing box 87 to move to the position where the waste box 84 just received the material, and the loading and conveying mechanism 70 grabs the qualified electrode in the replenishing box 87; then control the waste box 84 to move below the next unqualified electrode, control the loading and conveying mechanism 70 to put the next unqualified electrode into the waste box 84, then control the driving mechanism 85 to drive the replenishing box 87 to move to the position where the waste box 84 just received the material, and the loading and conveying mechanism 70 grabs the qualified electrode in the replenishing box 87, and repeat this process, put the unqualified electrode into the waste box 84 and grab the qualified electrode in the replenishing box 87 in turn.

[0045] In one embodiment, Figure 2As shown, the electrode sheet rejection patch mechanism 80 also includes a patch detection mechanism 88, which is arranged on one side of the replenishment box 87. The patch detection mechanism 88 is suitable for detecting the number of electrode sheets in the replenishment box 87 grabbed by the loading and conveying mechanism 70 each time. When the patch detection mechanism 88 detects that the electrode sheets in the replenishment box 87 grabbed by the loading and conveying mechanism 70 each time are multiple sheets, the loading and conveying mechanism 70 can be controlled to put down the electrode sheet and grab it again, or a prompt can be issued to remind the staff, and the staff will handle it. When the electrode sheet in the replenishment box 87 grabbed by the loading and conveying mechanism 70 each time is one sheet, the next operation can be performed, such as controlling the loading and conveying mechanism 70 to transport the electrode sheet to the stacking table for stacking, or controlling the replenishment box 87 to move to the next position for patching. The number of electrode sheets in the replenishment box 87 grabbed by the loading and conveying mechanism 70 each time is detected by the patch detection mechanism 88, which effectively avoids the situation where the loading and conveying mechanism 70 grabs multiple sheets.

[0046] Furthermore, the patch detection mechanism 88 is a thickness detection mechanism, which determines the number of the electrode pieces by detecting the thickness of the electrode pieces in the patch box 87 grabbed by the feeding and conveying mechanism 70 each time, and the detection is convenient. Specifically, the thickness detection mechanism is a beam ultrasonic sensor, which has the advantages of simple structure, low cost, high sensitivity, etc.

[0047] It should be noted that the structure and principle of the ultrasonic sensor are conventional technologies and will not be described in detail here.

[0048] In another embodiment, the thickness of the electrode pieces in the replenishment box 87 can be detected by a thickness detection mechanism, and the number of electrode pieces in the replenishment box 87 grabbed by the loading and conveying mechanism 70 each time can also be determined.

[0049] In one embodiment, Figure 2 As shown, the electrode sheet rejection and patching mechanism 80 also includes an electrode sheet brush 89 arranged on at least one side of the feed box 87. The bristles of the electrode sheet brush 89 extend into the cavity of the feed box 87. The electrode sheet brush 89 is suitable for brushing off the electrode sheet located below the electrode sheet taken out from the feed box 87 by the loading and transporting mechanism 70. When the loading and transporting mechanism 70 takes out the electrode sheet from the feed box 87, at least one side of the electrode sheet will pass through the electrode sheet brush 89. If multiple electrode sheets are adhered together, the electrode sheet brush 89 will brush them off, further preventing the loading and transporting mechanism 70 from adsorbing multiple electrodes.

[0050] Specifically, there are two electrode brushes 89 disposed on opposite sides of the feed box. The electrode brush comprises a brush holder and a plurality of bristles, and the plurality of bristles are fixed on the brush holder.

[0051] In one embodiment, the waste box 84 and the feed box 87 have a waste removal and feed state that can be moved to one side of the stacking station and a evasive position that can be moved to one end of the stacking station. During normal production, the waste box 84 is located at one end of the stacking station. After detecting unqualified sheets, the waste box 84 quickly moves to the corresponding position, and the loading and transporting mechanism 70 absorbs the unqualified sheets and throws them into the waste box 84. The waste box 84 moves along the arrangement direction of the stacking stations, that is, along Figure 7 Move in the first direction.

[0052] In one embodiment, Figure 2 As shown, the electrode scrapping and filling mechanism 80 also includes a fixing plate 91, on which the scrap box 84 and the filling box 87 are fixed, and the fixing plate 91 is connected to the driving mechanism 85. The setting of the fixing plate 91 is not only convenient for fixing the scrap box 84 and the filling box 87, but also convenient for connecting with the driving mechanism 85. The opposing ultrasonic sensor is fixed on the fixing plate 91.

[0053] In another embodiment, the fixing plate 91 may not be provided, and both the waste box 84 and the replenishing box 87 are connected to the driving mechanism 85 .

[0054] In one embodiment, Figures 1 to 6 As shown, the driving mechanism 85 includes a driving member 851 and a transmission mechanism 852, and the driving member 851 drives the waste box 84 to move through the transmission mechanism 852. Since the length of the laminating table is relatively long, it is easier to move the waste box 84 through the driving member 851 and the transmission mechanism 852.

[0055] Specifically, the driving member 851 is fixed on the fixing member 83, and the transmission mechanism 852 is a belt transmission mechanism 852, a chain transmission mechanism 852 or a ball screw mechanism. The driving member 851 is a motor, and the output shaft of the motor is connected to the driving pulley of the belt transmission mechanism 852, the driving sprocket of the chain transmission mechanism 852 or the lead screw of the ball screw, and the fixing plate 91 is fixedly connected to the driving belt of the belt transmission mechanism 852, the driving chain of the chain transmission mechanism 852 or the nut of the ball screw.

[0056] In another embodiment, the driving member 851 is fixed on the fixed plate 91, the transmission mechanism 852 is a gear rack mechanism, the rack of the gear rack mechanism is fixed on the fixed member 83, the gear of the gear rack mechanism is fixed on the output shaft of the driving member 851, and the gear moves on the rack to realize the movement of the waste box 84.

[0057] In another embodiment, the driving mechanism 85 is a linear motor or a driving cylinder, and the driving cylinder is a pneumatic cylinder or an oil cylinder.

[0058] In one embodiment, the pole piece detection mechanism 130 includes a fixed bracket and a plurality of detection components disposed on the fixed bracket, the detection components are used to detect defects and alignment of the pole piece, and the detection components are preferably CCD components and the like.

[0059] In one embodiment, the electrode sheet rejecting and patching mechanism 80 further includes a guide mechanism 86, which is disposed on the fixing member 83 and connected to the waste box 84 to guide the movement of the waste box 84. The guide mechanism 86 can ensure the accurate position of the waste box 84, so that unqualified electrode sheets can accurately fall into the waste box 84. The guide mechanism 86 is preferably a linear slide rail or the like.

[0060] Furthermore, the fixing member 83 includes a support plate and a connecting frame, the support plate is used to support the waste box 84, the guide mechanism 86 and the driving member 851, etc., and the connecting frame is connected to other fixing components.

[0061] According to an embodiment of the present utility model, in a second aspect, a device for removing waste electrodes and patching electrodes is also provided, such as Figures 7 to 10 As shown, it includes: a stacking table, a loading and conveying mechanism 70, the above-mentioned electrode waste removal and patching mechanism 80, an electrode detection mechanism 130 and a controller, the loading and conveying mechanism 70 is arranged corresponding to the stacking table to transport the electrode to the stacking table; the electrode waste removal and patching mechanism 80 is arranged on one side of the stacking table, the electrode waste removal and patching mechanism 80 is suitable for receiving unqualified electrodes transported by the loading and conveying mechanism 70 and providing qualified electrodes; the electrode detection mechanism 130 is suitable for detecting electrodes on the stacking table or on the loading and conveying mechanism 70; the controller is electrically connected to the loading and conveying mechanism 70, the electrode waste removal and patching mechanism 80 and the electrode detection mechanism 130, and the controller is used to control the loading and conveying mechanism 70 and the electrode waste removal and patching mechanism 80 to remove and patch according to the presence of unqualified information in the detection information detected by the electrode detection mechanism 130, wherein the unqualified information includes the quantity information and position information of unqualified electrodes.

[0062] When the electrode detection mechanism 130 detects that there are unqualified electrodes on the stacking table, the electrode detection mechanism 130 sends the detected information to the controller, and the controller controls the loading and conveying mechanism 70 to grab the unqualified electrodes and place them in the electrode rejection and patching mechanism 80, so that the unqualified electrodes on the stacking table can be removed; after rejection, the material box is controlled to move to the bottom of the corresponding controlled loading and conveying mechanism 70, and then the loading and conveying mechanism 70 grabs the qualified electrodes in the patching box, and the electrode rejection and patching mechanism 80 and the loading and conveying mechanism 70 cooperate to flexibly patch the electrodes according to the missing electrode situation, thereby simplifying the structure and reducing costs.

[0063] In one embodiment, Figures 7 to 10As shown, the number of the electrode waste patching mechanisms 80 is two, and the two electrode waste patching mechanisms 80 are respectively a positive electrode waste patching mechanism 81 and a negative electrode waste patching mechanism 82. Figure 7 The second direction is perpendicular to the first direction, the positive electrode rejecting and patching mechanism 81 is arranged on one side of the stacking table and is suitable for receiving the unqualified positive electrode sheets transported by the loading and conveying mechanism 70 and providing qualified positive electrode sheets, and the negative electrode rejecting and patching mechanism 82 is arranged on the other side of the stacking table and is suitable for receiving the unqualified negative electrode sheets transported by the loading and conveying mechanism 70 and providing qualified negative electrode sheets. The positive electrode rejecting and patching mechanism 81 is used to collect unqualified positive electrode sheets and provide qualified positive electrode sheets, and the negative electrode rejecting and patching mechanism 82 is used to collect unqualified negative electrode sheets and provide qualified negative electrode sheets. When unqualified positive electrode sheets exist on the stacking table or the loading and conveying mechanism 70, the loading and conveying mechanism 70 and the positive electrode rejecting and patching mechanism 81 are controlled to reject unqualified positive electrode sheets and replenish qualified positive electrode sheets. When unqualified negative electrode sheets exist on the stacking table, the loading and conveying mechanism 70 and the negative electrode rejecting and patching mechanism 82 are controlled to reject unqualified negative electrode sheets and replenish qualified negative electrode sheets. The loading and conveying mechanism 70 cooperates with the positive electrode rejecting and patching mechanism 81 and the negative electrode rejecting and patching mechanism 82 to reject and replenish positive electrode sheets and negative electrode sheets, which is more convenient to implement.

[0064] In one embodiment, the loading and transporting mechanism 70 is specifically an XYZ-axis transporting robot. It can be understood that the loading and transporting mechanism 70 can also be an articulated robot.

[0065] Specifically, the XYZ-axis handling manipulator includes a mounting frame and a first gripping structure and a second gripping structure mounted on the mounting frame. The mounting frame has a first discharge and replenishment position corresponding to the positive electrode waste removal and patching mechanism 81 and a second discharge and replenishment position corresponding to the negative electrode waste removal and patching mechanism 82. When there are unqualified positive electrode sheets on the stacking table, the first gripping structure grabs the unqualified positive electrode sheets on the stacking table, and the mounting frame moves to the first discharge and replenishment position. The first gripping structure puts the unqualified positive electrode sheets into the waste box 84 and grabs qualified positive electrode sheets from the replenishment box 87; when there are unqualified negative electrode sheets on the stacking table, the second gripping structure grabs the unqualified negative electrode sheets on the stacking table, and the mounting frame moves to the second discharge and replenishment position. The second gripping structure puts the unqualified negative electrode sheets into the waste box 84 and grabs qualified negative electrode sheets from the replenishment box 87.

[0066] Furthermore, the first gripping structure and the second gripping structure each include a plurality of suction cups.

[0067] In this embodiment, the feed box 87 is customized according to the size of the electrode and has high precision. Before production, the operator puts a number of qualified electrode sheets into the feed box 87 for use in the patch during the production process. Since the feed box 87 limits the position of the electrode sheet, the electrode sheet cannot move relatively in the feed box 87, which can ensure the alignment of the patch. When the suction cup takes the electrode sheet out of the feed box 87, the two sides of the electrode sheet will pass through the electrode brush 89. If there are multiple electrode sheets adhered together, the electrode brush 89 will brush them off; after the electrode sheet is taken out of the feed box 87, the handling robot moves and places the electrode sheet between the opposing ultrasonic sensors. By detecting its thickness, it is determined whether there are multiple sheets. If there are no multiple sheets, the sheets can be stacked.

[0068] Specifically, the process of discarding and refilling the positive and negative electrodes is basically the same. The process of discarding and refilling the positive electrodes is described below:

[0069] After the handling robot takes multiple positive electrode sheets at a time, it moves to the top of the stacking table for stacking. The CCD component above the stacking table detects defects and alignment of all positive electrode sheets. If there are unqualified sheets, the corresponding pressure knife of the stacking table will not press down, and the handling robot takes away the unqualified sheets, and the remaining qualified sheets are pressed by the pressure knife and stacked into the battery cell. The waste box 84 of the positive electrode rejection and patching mechanism 81 is driven by the motor and the synchronous belt to move below the corresponding unqualified sheets, and the handling robot throws the unqualified sheets into the waste box 84. Then the replenishment box 87 of the positive electrode rejection and patching mechanism 81 moves to the bottom of the corresponding suction cup, and the handling robot sucks qualified positive electrode sheets from the replenishment box 87 until all unqualified positive electrode sheets are replaced with qualified positive electrode sheets. The handling robot moves to the stacking table again for stacking. At this point, the positive electrode sheets stacked on the stacking table are all qualified positive electrode sheets, and the stacking machine enters the normal stacking process.

[0070] A movable replenishment box 87 and a waste box 84 are respectively arranged on both sides of the stacking table. The waste box 84 collects unqualified electrodes, and qualified electrodes are placed in the replenishment box 87 for replenishment. Flexible and fast waste removal and replenishment can be achieved through the cooperation of the replenishment box 87, the waste box 84 and the handling robot.

[0071] According to an embodiment of the present utility model, in a third aspect, a laminating machine is further provided, comprising: the above-mentioned pole piece rejecting and patching device.

[0072] In this embodiment, the stacking machine further includes a positive sheet feeding mechanism, a negative sheet feeding mechanism, a diaphragm feeding mechanism and a film laying mechanism. The positive sheet feeding mechanism and the negative sheet feeding mechanism are arranged on both sides of the stacking platform. The positive electrode rejecting and patching mechanism 81 is arranged between the positive sheet feeding mechanism and the stacking platform. The negative electrode rejecting and patching mechanism 82 is arranged between the negative sheet feeding mechanism and the stacking platform. The positive sheet feeding mechanism and the negative sheet feeding mechanism are respectively suitable for providing positive and negative sheets to the stacking platform. The diaphragm feeding mechanism is fixedly arranged and suitable for providing diaphragms to the stacking platform. The film laying mechanism is movably arranged above the stacking platform. The film laying mechanism is suitable for grabbing the diaphragm and reciprocating along the feeding direction of the diaphragm feeding mechanism above the stacking platform.

[0073] Specifically, the mounting frame has a first transport position and a second transport position. When the mounting frame is in the first transport position, the first gripping structure is located above the positive electrode sheet feeding mechanism, and the second gripping structure is located above the stacking table. When the mounting frame is in the second transport position, the first gripping structure is located above the stacking table, and the second gripping structure is located above the negative electrode sheet feeding mechanism.

[0074] In this embodiment, the stacking machine further includes a material unloading and handling mechanism, which may include a plurality of unloading jaws, the number of which is adapted to the number of battery cells. The plurality of unloading jaws are mounted on the battery cell carrier, and the unloading jaws can clamp the battery cell from the side. The battery cell carrier can be moved in the X, Y, and Z directions by a linear mechanism, so that the battery cell is unloaded from the stacking table and subsequently processed.

[0075] In the technical solution of this embodiment, the stacking machine also includes a hot cutting mechanism, a gluing mechanism and a hot pressing mechanism which are sequentially arranged downstream of the stacking table, and the three are located on the moving path of the unloading and conveying mechanism.

[0076] During the stacking process, the positive electrode sheets, diaphragms, and negative electrode sheets need to be stacked back and forth to form a battery cell structure. Among the multiple battery cells that have been stacked by the stacking table, on the one hand, the positive electrode sheets, diaphragms, and battery cells are still in a loose state, and on the other hand, the diaphragms between adjacent battery cells have not been cut off. Therefore, in subsequent processing, multiple battery cells first pass through a hot cutting mechanism to cut off the diaphragms between adjacent battery cells. Then a single battery cell passes through a gluing mechanism to glue the edge of the battery cell, thereby achieving edge sealing of the battery cell. Finally, a single battery cell needs to be compacted by a hot pressing mechanism to complete the processing of the battery cell. Subsequently, the battery cell completes the stacking process and can be transferred out of the stacking machine and proceed to the next process.

[0077] Of course, the stacking machine can add subsequent processing stations according to actual needs.

[0078] The following is an explanation of the lamination process of the lamination machine:

[0079] 1. The loading and transporting mechanism 70 places a row of positive electrode sheets on the stacking table;

[0080] 2. The membrane laying mechanism grabs the membrane provided by the first membrane feeding mechanism and lays the membrane on the positive electrode sheet on the lamination table;

[0081] 3. The loading and transporting mechanism 70 places a row of negative electrode sheets on the stacking table;

[0082] 4. The film laying mechanism lays the diaphragm on the negative electrode sheet on the lamination table;

[0083] The above steps 1 to 4 are repeated repeatedly, so that a stacking in the form of "positive electrode sheet-separator-negative electrode sheet-separator" can be performed to form a battery cell.

[0084] It should be noted that the stacking table, positive electrode sheet feeding mechanism, negative electrode sheet feeding mechanism, diaphragm feeding mechanism, film laying mechanism, material unloading and conveying mechanism, hot cutting mechanism, gluing mechanism and hot pressing mechanism can adopt structures in the existing technology, which will not be described in detail here.

[0085] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A pole piece rejecting and patching mechanism, characterized in that: include: A fixing member (83), fixedly arranged; A waste box (84) is movably arranged on the fixing member (83), and the waste box (84) is suitable for storing unqualified pole pieces; A material replenishment box (87) is movably arranged on the fixing member (83), and the material replenishment box (87) is suitable for storing a plurality of qualified electrode sheets; A driving mechanism (85) is connected to the waste box (84) and the replenishing box (87), and the driving mechanism (85) drives the waste box (84) and the replenishing box (87) to move synchronously.

2. The electrode rejection and patching mechanism according to claim 1 is characterized in that: The electrode sheet rejection and patching mechanism also includes a patch detection mechanism (88), which is arranged on one side of the material replenishment box (87). The patch detection mechanism (88) is suitable for detecting the number of electrode sheets in the material replenishment box (87) grabbed by the loading and conveying mechanism (70) each time.

3. The electrode scrapping and patching mechanism according to claim 2 is characterized in that: The patch detection mechanism (88) is a thickness detection mechanism.

4. The electrode scrapping and patching mechanism according to claim 3 is characterized in that: The thickness detection mechanism is a through-beam ultrasonic sensor.

5. The electrode piece rejecting and patching mechanism according to any one of claims 1 to 4, characterized in that: The electrode sheet rejection and patching mechanism also includes an electrode sheet brush (89) arranged on at least one side of the replenishment box (87), and the bristles of the electrode sheet brush (89) extend into the cavity of the replenishment box (87). The electrode sheet brush (89) is suitable for brushing off the electrode sheet located below the electrode sheet taken out from the replenishment box (87) when the loading and transporting mechanism (70) takes out the electrode sheet.

6. The electrode piece rejecting and patching mechanism according to any one of claims 1 to 4, characterized in that: The electrode waste rejection and electrode replenishment mechanism further comprises a fixing plate (91), the waste box (84) and the replenishment box (87) are fixed on the fixing plate (91), and the fixing plate (91) is connected to the driving mechanism (85).

7. The electrode piece rejecting and patching mechanism according to any one of claims 1 to 4, characterized in that: The driving mechanism (85) comprises a driving member (851) and a transmission mechanism (852), and the driving member (851) drives the waste box (84) to move via the transmission mechanism (852).

8. The electrode piece rejecting and patching mechanism according to claim 7 is characterized in that: The driving member (851) is fixed on the fixing member (83), and the transmission mechanism (852) is a belt transmission mechanism (852), a chain transmission mechanism (852) or a ball screw mechanism, or the driving member (851) is fixed on the waste box (84), and the transmission mechanism (852) is a gear rack mechanism.

9. A device for removing waste and patching pole pieces, characterized in that: include: Lamination table; A loading and transporting mechanism (70) is arranged corresponding to the lamination platform to transport the pole piece to the lamination platform; The electrode sheet rejecting and patching mechanism according to any one of claims 1 to 8 is arranged on one side of the stacking table, and is suitable for receiving unqualified electrode sheets transported by the loading and transporting mechanism (70) and providing qualified electrode sheets; A pole piece detection mechanism (130) adapted to detect pole pieces on the lamination table or on the loading and transporting mechanism (70); A controller is electrically connected to the loading and conveying mechanism (70), the electrode rejecting and patching mechanism and the electrode detection mechanism (130), and the controller is used to control the loading and conveying mechanism (70) and the electrode rejecting and patching mechanism to reject and patch according to the presence of unqualified information in the detection information detected by the electrode detection mechanism (130), wherein the unqualified information includes the quantity information and position information of unqualified electrodes.

10. A laminating machine, characterized in that: include: The electrode scrapping and patching device as described in claim 9.

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