Battery cell blanking and shaping device and battery cell production equipment

Abstract

The present application discloses a battery cell blanking and shaping device and battery cell production equipment. The battery cell blanking and shaping device comprises: a battery cell blanking mechanism, the battery cell blanking mechanism is used to blank and flatten the battery cells; a transfer mechanism, the transfer mechanism is connected to the battery cell blanking mechanism; a shaping mechanism, the shaping mechanism comprises a support and a first pressing plate, the support is equipped with a lifting mechanism and a second pressing plate, the battery cell blanking mechanism keeps the battery cells in a flattened state, the transfer mechanism can transport the battery cells to between the first pressing plate and the second pressing plate, the lifting mechanism is used to drive the first pressing plate close to the second pressing plate to compact the battery cells flattened by the battery cell blanking mechanism. The present application does not require a pre-pressing mechanism, and can avoid wrinkles and GAP problems during the battery cell shaping process.

Description

Technical Field

[0001] The present application relates to the field of battery production equipment, and in particular to a battery cell blanking and shaping device and battery cell production equipment. Background Art

[0002] The winding needle of the battery cell winding device winds the material strip (including the diaphragm and the electrode piece) into a Figure 1 The cylindrical battery cell 200 shown in the figure, after the battery cell 200 is unloaded by the winding needle, the pre-pressing mechanism needs to pre-press the battery cell 200 to pre-shape the battery cell 200, and then the pre-pressed battery cell 200 is transported to the shaping mechanism, and the shaping mechanism compacts the battery cell 200, so that the inner circle 201 of the battery cell 200 becomes very narrow and long or even disappears, forming a Figure 2 The shape shown prevents the battery cell 200 from loosening during transportation.

[0003] During the process of the pre-pressed battery cell 200 being conveyed to the shaping mechanism, after the pre-pressing is removed, since the battery cell 200 is not completely compacted, there are electrode plate wrinkles in the inner circle of the battery cell 200 during the conveying process (after the pre-pressing is removed, the electrode plate of the innermost circle rebounds and causes wrinkles in the next process) and there are GAP problems in the inner circle corners (that is, the gaps between the cathode electrode plate, anode electrode plate and the diaphragm change), which affect the battery cell performance.

[0004] Therefore, it is necessary to improve the existing technology and provide a new battery cell blanking and shaping device and battery cell production equipment. Utility Model Content

[0005] One purpose of the present application is to provide a new technical solution for a battery cell blanking and shaping device and a battery cell winding device.

[0006] To achieve the above-mentioned purpose, according to the first aspect of the present application, a battery cell blanking and shaping device is provided, comprising: a battery cell blanking mechanism, the battery cell blanking mechanism is used to blank and flatten the battery cells; a transfer mechanism, the transfer mechanism is connected to the battery cell blanking mechanism; a shaping mechanism, the shaping mechanism comprises a support and a first pressing plate, the support is equipped with a lifting mechanism and a second pressing plate, the battery cell blanking mechanism keeps the battery cells in a flattened state, the transfer mechanism can transport the battery cells to between the first pressing plate and the second pressing plate, and the lifting mechanism is used to drive the first pressing plate to approach the second pressing plate to compact the battery cells flattened by the battery cell blanking mechanism.

[0007] Optionally, the battery cell unloading mechanism includes a mounting plate and a pair of clamping pins, the mounting plate is equipped with a first driving member, each of the clamping pins includes an inner clamping pin and an outer clamping pin, the inner clamping pin and the outer clamping pin can move relative to each other to clamp the battery cell, and the first driving member can drive the pair of clamping pins away from each other in a first direction to flatten the battery cell.

[0008] Optionally, the battery cell unloading mechanism also includes a pair of first movable plates, each of the first movable plates is equipped with a second driving member, the second driving member can drive the second movable plate to move along a second direction, the clamping needle is installed on the second movable plate, the first driving member can drive a pair of first movable plates away from each other along a first direction, and the first direction intersects with the second direction.

[0009] Optionally, the inner clamping needle is fixed to the second movable plate, and the second movable plate is equipped with a third driving member, and the third driving member is used to drive the outer clamping needle along the first direction to approach or move away from the inner clamping needle; or, the outer clamping needle is fixed to the second movable plate, and the second movable plate is equipped with a third driving member, and the third driving member is used to drive the inner clamping needle along the first direction to approach or move away from the outer clamping needle.

[0010] Optionally, the transfer mechanism includes a fourth driving member. In the third direction, the molding mechanism is located below the unloading station. The fourth driving member is used to drive the mounting plate to move along the third direction so that the battery cell unloading mechanism can reach the unloading station or the molding mechanism position. The first direction intersects with the third direction.

[0011] Optionally, the battery cell unloading mechanism and the transfer mechanism are integrated into a manipulator, the battery cell unloading and shaping device includes at least one shaping mechanism, and the manipulator can unload and flatten the battery cells and then convey them to each shaping mechanism.

[0012] Optionally, the lifting mechanism is connected to a lifting plate, the lifting plate is connected to the first pressing plate, a pressure sensor is provided between the lifting plate and the first pressing plate, and the lifting mechanism adjusts the pressing force applied to the battery cell according to a signal of the pressure sensor.

[0013] Optionally, the second pressing plate is equipped with a battery cell detection sensor, which is used to detect whether there are battery cells between the first pressing plate and the second pressing plate, and the lifting mechanism drives the first pressing plate to approach the second pressing plate according to the signal of the battery cell detection sensor.

[0014] Optionally, the first pressing plate is provided with a fifth driving member, and before the first pressing plate approaches the second pressing plate, the fifth driving member can drive the middle pressing plate to approach the second pressing plate to apply a pressing force to the middle of the battery cell.

[0015] Optionally, the battery cell blanking and shaping device further comprises a transmission mechanism, wherein the transmission mechanism comprises a transmission belt, and the transmission belt is sleeved on the second pressing plate.

[0016] According to a second aspect of the present application, a battery cell production equipment is provided, comprising: a battery cell winding device, the battery cell winding device comprising a winding needle, the winding needle is used to wind the material strip to form a battery cell; a battery cell blanking and shaping device as described in any of the preceding items, the battery cell blanking and shaping device is used to blank, flatten and compact the battery cell formed by winding with the winding needle.

[0017] The battery cell unloading mechanism in the embodiment of the present application unloads and flattens the battery cells, and then the transfer mechanism directly transports the battery cells in the flattened state to the shaping mechanism for compaction. Therefore, there is no need for a pre-pressing mechanism, and there is no process of canceling the pre-tension after pre-pressing. The pole pieces in the inner circle of the battery cell will not move, so no wrinkles will occur, and the gaps between the cathode pole piece, the anode pole piece and the diaphragm will not change. Therefore, there will be no GAP problem, and the performance of the produced battery cells is improved.

[0018] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0020] Figure 1 This is the front view of the wound battery cell.

[0021] Figure 2 This is the front view of the compacted battery cell.

[0022] Figure 3 This is the front view of the battery cell after being flattened.

[0023] Figure 4 It is a three-dimensional diagram of a battery cell unloading mechanism according to an embodiment of the present application.

[0024] Figure 5 It is a front view of a battery cell unloading mechanism according to an embodiment of the present application.

[0025] Figure 6 It is a top view of a battery cell unloading mechanism according to an embodiment of the present application.

[0026] Figure 7 It is a three-dimensional diagram of a shaping mechanism according to an embodiment of the present application.

[0027] Figure 8 It is a front view of a shaping mechanism according to an embodiment of the present application.

[0028] Fig. 9 This is a front view of a battery cell production device according to an embodiment of the present application.

[0029] Fig.10 It is a right side view of a battery cell production device according to one embodiment of the present application.

[0030] Fig.11 It is a front view of a battery cell production device according to another embodiment of the present application.

[0031] Description of reference numerals:

[0032] 100, battery cell unloading mechanism; 101, mounting plate; 102, first driving member; 103, clamping needle; 1031, inner clamping needle; 1032, outer clamping needle; 104, first movable plate; 105, second driving member; 106, second movable plate; 107, third driving member; 500, transfer mechanism; 501, fourth driving member; 502, manipulator; 200, battery cell; 201, inner ring; 300, shaping mechanism; 301, support; 302, first pressing plate; 303, lifting mechanism; 304, second pressing plate; 305, lifting plate; 306, pressure sensor; 307, battery cell detection sensor; 308, fifth driving member; 309, middle pressing plate; 310, transmission mechanism; 311, slider; 312, linear rail; 313, transmission belt; 400, battery cell winding device; 401, winding needle. DETAILED DESCRIPTION

[0033] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0035] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0036] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0037] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0038] In the following description, each driving member can adopt a power source such as a cylinder, a motor, etc., and a transmission method such as a piston transmission, a gear rack transmission, etc.

[0039] In the following description, the battery cell 200 is only used to describe the working principle of the battery cell blanking and shaping device and the battery cell winding equipment, and should not be regarded as a part of any mechanism, device or equipment.

[0040] In the following description, "connection" includes both a direct connection between the two and an indirect connection between the two via, for example, an adapter plate, a driving member, etc.

[0041] like Figures 4 to 11 As shown, the battery cell unloading and shaping device in the present application includes a battery cell unloading mechanism 100, a transfer mechanism 500 and a shaping mechanism 300. Among them, the battery cell unloading mechanism 100 is used to unload and flatten the battery cell 200. The transfer mechanism 500 is connected to the battery cell unloading mechanism 100. The shaping mechanism 300 includes a support 301 and a first pressing plate 302. The support 301 is equipped with a lifting mechanism 303 and a second pressing plate 304. When the battery cell unloading mechanism 100 keeps the battery cell 200 in a flattened state, the transfer mechanism 500 can transport the battery cell 200 between the first pressing plate 302 and the second pressing plate 304. The lifting mechanism 303 is used to drive the first pressing plate 302 to approach the second pressing plate 304 to compact the battery cell 200 flattened by the battery cell unloading mechanism 100.

[0042] Specifically, the battery cell unloading mechanism 100 can be used as follows: Figures 4 to 6 The structure shown in FIG. 1 can also be used as shown in FIG. Fig.11 The manipulator shown is used to realize the unloading and flattening of the battery cell 200. The transfer mechanism 500 can adopt the fourth driving member 501 described below, or the transfer mechanism 500 and the battery cell unloading mechanism 100 can be integrated into the manipulator 502. Taking the fourth driving member 501 as an example of the transfer mechanism, the moving end of the fourth driving member 501 is connected to the mounting plate 101 of the battery cell unloading mechanism 100, so that the battery cell unloading mechanism 100 can move. The support 301 is the supporting structure of the shaping mechanism 300. The lifting mechanism 303 can adopt a cylinder mechanism or a motor screw transmission mechanism. The battery cell unloading mechanism 100 will be as follows Figure 1 The battery cell 200 shown in the figure is cut from the winding needle 401 and flattened into the Figure 3 After the battery cell 200 is formed into the shape shown in the figure, the battery cell unloading mechanism 100 keeps the battery cell 200 in the flattened state, and then the transfer mechanism 500 drives the battery cell unloading mechanism 100 to move, so as to transport the flattened battery cell 200 to between the first pressing plate 302 and the second pressing plate 304. Then, the lifting mechanism 303 drives the first pressing plate 302 to approach the second pressing plate 304 along the third direction, so as to Figure 3 The battery cell 200 shown is compacted into Figure 2 In the whole process, no pre-pressing mechanism is required, and there is no process of canceling the pre-tension after pre-pressing. The battery cell 200 is directly compacted after being flattened, so there will be no wrinkles or GAP problems, and the performance of the battery cell 200 is guaranteed.

[0043] like Figures 4 to 6 As shown, in this embodiment, the battery cell unloading mechanism 100 includes: a mounting plate 101 and a pair of clamping pins 103. The mounting plate 101 is installed with a first driving member 102. In the pair of clamping pins 103, each clamping pin 103 includes an inner clamping pin 1031 and an outer clamping pin 1032, and the inner clamping pin 1031 and the outer clamping pin 1032 can move relative to each other to clamp the battery cell 200. The first driving member 102 can drive the pair of clamping pins 103 to move away from each other in a first direction to flatten the battery cell 200. The clamping pins 103 of the battery cell unloading mechanism 100 will be as shown in the figure. Figure 1 The battery cell 200 shown is flattened into Figure 3 After the battery cell 200 is shaped as shown, the clamping needle 103 keeps the battery cell 200 in a flattened state, and then the transfer mechanism 500 drives the battery cell unloading mechanism 100 to move, thereby conveying the flattened battery cell 200 to between the first pressing plate 302 and the second pressing plate 304. Then, the lifting mechanism 303 drives the first pressing plate 302 to approach the second pressing plate 304 along the third direction, thereby Figure 3 The battery cell 200 shown is compacted into Figure 2 In the whole process, no pre-pressing mechanism is required, and there is no process of canceling the pre-tension after pre-pressing. The battery cell 200 is directly compacted after being flattened, so there will be no wrinkles or GAP problems, and the performance of the battery cell 200 is guaranteed.

[0044] Specifically, the two clamping needles 103 are arranged in pairs. Each clamping needle 103 includes an inner clamping needle 1031 and an outer clamping needle 1032 arranged in groups, and the inner clamping needle 1031 is used to clamp such as Figure 1 The outer clamping pin 1032 is used to clamp the edge of the inner ring 201 of the battery cell 200. Figure 1 The edge of the outer ring of the battery cell 200 shown. The inner clamping pin 1031 and the outer clamping pin 1032 move relative to each other, which can be that the inner clamping pin 1031 is stationary and the outer clamping pin 1032 moves or swings relative to the inner clamping pin 1031, or the outer clamping pin 1032 is stationary and the inner clamping pin 1031 moves or swings relative to the outer clamping pin 1032, or the inner clamping pin 1031 and the outer clamping pin 1032 move or swing simultaneously. The first driving member 102 can adopt a forward and reverse threaded screw nut mechanism driven by a motor, or can adopt two cylinders to drive a pair of clamping pins 103 to move closer to or away from each other along the first direction.

[0045] When cutting, the inner clamping needle 1031 is inserted into the inner ring 201 of the battery cell 200, and the outer clamping needle 1032 is located at the outer ring of the battery cell 200. Then, the inner clamping needle 1031 and the outer clamping needle 1032 move relative to each other to clamp the battery cell 200. At this time, the inner clamping needle 1031 clamps the innermost material strip of the inner ring 201 of the battery cell 200, and the outer clamping needle 1032 clamps the outermost material strip of the outer ring of the battery cell 200, thereby clamping the battery cell 200. Then, the first driving member 102 drives a pair of clamping needles 103 away from each other in a first direction, flattening the battery cell 200 to form a Figure 3 Then, the inner clamping needle 1031 and the outer clamping needle 1032 keep clamping the battery cell 200 and keep the battery cell 200 in a flattened state, and then the transfer mechanism 500 drives the battery cell unloading mechanism 100 to move, so as to transport the flattened battery cell 200 to between the first pressing plate 302 and the second pressing plate 304, and enter the shaping process. During shaping, the lifting mechanism 303 drives the first pressing plate 302 to approach the second pressing plate 304 along the third direction, so as to Figure 3 The battery cell 200 shown is compacted into Figure 2 In the whole process, no pre-pressing mechanism is required, and there is no process of canceling the pre-tension after pre-pressing. The battery cell 200 is directly compacted after being flattened, so there will be no wrinkles or GAP problems, and the performance of the battery cell 200 is guaranteed.

[0046] like Figures 4 to 6 As shown, the battery cell unloading mechanism 100 also includes a pair of first movable plates 104. Each first movable plate 104 is installed with a second driving member 105. The second driving member 105 can drive the second movable plate 106 to move along the second direction. The clamping needle 103 is installed on the second movable plate 106. The first driving member 102 can drive the pair of the first movable plates 104 to move away from each other along the first direction. The first direction intersects with the second direction.

[0047] Specifically, a pair of first movable plates 104 correspond to a pair of clamping needles 103 one by one. Each first movable plate 104 is equipped with a second driving member 105, and the moving end of the second driving member 105 is connected to the second movable plate 106, thereby driving the second movable plate 106 to move in the second direction. The clamping needle 103 (including the inner clamping needle 1031 and the outer clamping needle 1032) is installed on the second movable plate 106. The first movable plate 104 can be slidably matched with the mounting plate 101 through mechanisms such as linear rail sliders. The first driving member 102 can drive a pair of first movable plates 104 to move closer to or away from each other in the first direction, and the second driving member 105, the second movable plate 106, and the clamping needle 103 move with the first movable plate 104, so that a pair of clamping needles 103 can move closer to or away from each other. The second driving member 105 drives the second movable plate 106 to move in the second direction, so the clamping needle 103 can also move in the second direction. Therefore, the pair of clamping needles 103 of the battery cell unloading mechanism 100 can be driven by the first driving member 102 to move closer to or farther from each other, and can also be driven by the second driving member 105 to move along the second direction. The first direction intersects the second direction.

[0048] like Fig.10 As shown, when cutting, the clamping needle 103 is aligned with the winding needle 401, and then the second driving member 105 drives the second moving plate 106 to move along the second direction close to the winding needle 401, and the two inner clamping needles 1031 are inserted as shown in FIG. Figure 1 The inner ring 201 of the battery cell 200 shown in the figure, and the two outer clamping pins 1032 are located outside the battery cell 200. Then, the inner clamping pins 1031 and the outer clamping pins 1032 clamp the battery cell 200. Then, the winding pin 401 withdraws from the battery cell 200. Then, the first driving member 102 drives the first moving plate 104 to move away from each other in the first direction, and flattens the battery cell 200 to form a flat surface as shown in FIG. Figure 3 The second driving member 105 drives the second moving plate 106 to move along the second direction, so that the inner clamping needle 1031 of the clamping needle 103 can be inserted into the inner ring 201 of the battery cell 200 more quickly, and it is also more convenient to subsequently transport the battery cell 200 to the shaping mechanism 300.

[0049] like Figure 4 , Figure 6 As shown, in this embodiment, the inner clamping needle 1031 is fixed to the second movable plate 106. The second movable plate 106 is installed with a third driving member 107. The third driving member 107 is used to drive the outer clamping needle 1032 to approach or move away from the inner clamping needle 1031 along the first direction.

[0050] Specifically, the inner clamping pin 1031 can be fixed to the second movable plate 106 by means of screws, rivets, welding, etc. The second movable plate 106 is equipped with a third driving member 107, and the moving end of the third driving member 107 is connected to the outer clamping pin 1032. When the third driving member 107 is actuated, the outer clamping pin 1032 can be driven to approach or move away from the inner clamping pin 1031 along the first direction. In this embodiment, the inner clamping pin 1031 is stationary, and the outer clamping pin 1032 performs translational motion relative to the inner clamping pin 1031.

[0051] In other embodiments of the present application, the outer clamping needle 1032 is fixed to the second movable plate 106. The second movable plate 106 is equipped with a third driving member 107, and the third driving member 107 is used to drive the inner clamping needle 1031 to approach or move away from the outer clamping needle 1032 along the first direction. That is to say, in this embodiment, the outer clamping needle 1032 is stationary, and the inner clamping needle 1031 performs translational motion relative to the outer clamping needle 1032.

[0052] In other embodiments of the present application, the inner clamping needle 1031 or the outer clamping needle 1032 can also swing, for example, by moving in the manner of a rocker rod.

[0053] In other embodiments of the present application, the inner clamping needle 1031 and the outer clamping needle 1032 can move simultaneously.

[0054] like Figures 4 to 6 As shown, in this embodiment, the transfer mechanism 500 includes a fourth driving member 501.

[0055] like Fig.10 As shown, in the third direction, the shaping mechanism 300 is located below the blanking station, and the fourth driving member 501 is used to drive the mounting plate 101 to move along the third direction so that the battery cell blanking mechanism 100 can reach the blanking station or the shaping mechanism 300. The first direction intersects with the third direction.

[0056] Specifically, the fourth driving member 501 can be a cylinder mechanism or a motor screw mechanism, driving the mounting plate 101 to move along the third direction, thereby driving the first driving member 102 and the clamping needle 103 of the battery cell unloading mechanism 100 to move along the third direction. The first direction, the second direction and the third direction intersect each other. Fig.10 The direction indicated by the third directional arrow is downward, and the direction opposite to the third directional arrow is upward, which shows that the shaping mechanism 300 is located below the unloading station. The fourth driving member 501 is used to enable the battery cell unloading mechanism 100 to reach the unloading station, where the clamping needle 103 unloads and flattens the battery cell 200, and then the fourth driving member 501 drives the battery cell unloading mechanism 100 to the position of the shaping mechanism 300 below, thereby compacting and shaping the flattened battery cell 200. This structure facilitates the transportation of the battery cell 200.

[0057] like Fig.11 As shown, in another embodiment of the present application, the cell unloading mechanism 100 and the transfer mechanism 500 are integrated into a manipulator 502. The cell unloading and shaping device includes at least one shaping mechanism 300, and the manipulator 502 can unload the cell 200, flatten it, and then convey it to each shaping mechanism 300.

[0058] Specifically, the arm of the manipulator 502 can generally move with multiple degrees of freedom. The manipulator 502 can be equipped with structures such as clamps to unload and flatten the battery cells 200. Therefore, the manipulator 502 can integrate the functions of the battery unloading mechanism 100 and the transfer mechanism 500. At this time, at least one shaping mechanism 300 can be set. The manipulator 502 can unload and flatten the battery cells 200, and then transport the battery cells 200 in the flattened state to each shaping mechanism 300 in turn, thereby adapting to the spatial layout of the battery production line and improving production efficiency. Fig.11 In the embodiment shown, there are two shaping mechanisms 300. In actual production, the number of shaping mechanisms can be increased or decreased as needed, for example, one or more shaping mechanisms 300 can be provided. When there are more than two shaping mechanisms 300, each shaping mechanism 300 can be located on the same side of the manipulator 502.

[0059] like Figure 7 , Figure 8 As shown, the lifting mechanism 303 is connected to the lifting plate 305, and the lifting plate 305 is connected to the first pressing plate 302. A pressure sensor 306 is provided between the lifting plate 305 and the first pressing plate 302. The lifting mechanism 303 adjusts the pressing force applied to the battery cell 200 according to the signal of the pressure sensor 306.

[0060] Specifically, in the present embodiment, the lifting mechanism 303 does not directly drive the first pressing plate 302, but first connects to the lifting plate 305, and then drives the first pressing plate 302 through the lifting plate 305. A pressure sensor 306 is provided between the lifting plate 305 and the first pressing plate 302, so that the pressing force applied by the first pressing plate 302 to the battery cell 200 can be measured by the pressure sensor 306. The lifting mechanism 303 adjusts the pressing force applied to the battery cell 200 according to the signal of the pressure sensor 306. The pressing force can therefore be between 5 tons and 40 tons, so that the battery cell 200 can be compacted and shaped without being damaged. The first pressing plate 302 can be connected to the slider 311, and the wire rail 312 can be fixed on the support 301, so that the first pressing plate 302 can slide relative to the support 301.

[0061] like Figure 8As shown, in this embodiment, the second pressing plate 304 is equipped with a cell detection sensor 307, which is used to detect whether there is a cell 200 between the first pressing plate 302 and the second pressing plate 304. The lifting mechanism 303 drives the first pressing plate 302 to approach the second pressing plate 304 according to the signal of the cell detection sensor 307.

[0062] Specifically, the cell detection sensor 307 can be a photoelectric sensor, for example, a signal transmitting end and a signal receiving end are set. When the flattened cell 200 reaches between the first pressing plate 302 and the second pressing plate 304, the cell 200 can be between the signal transmitting end and the signal receiving end, and the signal state of the signal receiving end changes. The cell detection sensor 307 can detect that the cell 200 is in place, thereby sending a signal to the lifting mechanism 303. After receiving the signal from the cell detection sensor 307, the lifting mechanism 303 drives the first pressing plate 302 to approach the second pressing plate 304, first pressing the cell 200, and then the inner clamping needle 1031 and the outer clamping needle 1032 move away from each other, and the clamping needle 103 releases the cell 200. Then, the second driving member 105 drives the clamping needle 103 to move in the second direction to evacuate the clamping needle 103, and the first pressing plate 302 further approaches the second pressing plate 304 to compact the cell 200. After compaction is completed, the lifting mechanism 303 drives the first pressing plate 302 away from the second pressing plate 304 , and the compacted and shaped battery cell 200 can leave the shaping mechanism 300 and enter the next process.

[0063] like Figure 7 As shown, in this embodiment, the first pressing plate 302 is installed with a fifth driving member 308. Before the first pressing plate 302 approaches the second pressing plate 304, the fifth driving member 308 can drive the middle pressing plate 309 to approach the second pressing plate 304 to apply a pressing force to the middle of the battery cell 200.

[0064] Specifically, after the flattened battery cell 200 reaches between the first pressing plate 302 and the second pressing plate 304, the fifth driving member 308 first drives the middle pressing plate 309 close to the second pressing plate 304. At this time, the middle pressing plate 309 applies a pressing force to the middle position of the battery cell 200 located between a pair of clamping pins 103, so that the middle part of the battery cell 200 is compacted first, and then the inner clamping pin 1031 and the outer clamping pin 1032 move away from each other, the clamping pin 103 releases the battery cell 200, and the second driving member 105 drives the clamping pin 103 to move in the second direction to evacuate the clamping pin 103. Then, the lifting mechanism 303 drives the first pressing plate 302 close to the second pressing plate 304 to compact the entire battery cell 200. The advantage of this structure is that during the compaction and shaping process, the innermost layer of the inner ring of the battery cell 200 can be better kept stationary, further avoiding wrinkles and GAP problems.

[0065] like Figures 7 to 11As shown, the battery core blanking and shaping device further includes a transmission mechanism 310. The transmission mechanism 310 includes a transmission belt 313, and the transmission belt 313 is sleeved on the second pressing plate 304.

[0066] Specifically, the transmission mechanism 310 is used to transport the compacted and shaped battery cell 200 to the next process. The transmission belt 313 is sleeved on the second pressing plate 304, so that the battery cell 200 can be directly taken away by the transmission belt 313 after being compacted and shaped, avoiding the addition of a transfer step.

[0067] like Figures 4 to 11 As shown, this embodiment also provides a battery cell production device, including: a battery cell winding device 400 and a battery cell blanking and shaping device as described above. The battery cell winding device 400 includes a winding needle 401, and the winding needle 401 is used to wind the material strip to form a battery cell 200. The battery cell blanking and shaping device is used to blank, flatten and compact the battery cell 200 formed by winding the winding needle 401.

[0068] Specifically, the winding needle 401 winds the material strip (including the cathode electrode sheet, the anode electrode sheet, and the diaphragm) into a Figure 1 The battery cell 200 shown. After winding is completed, the battery cell unloading mechanism 100 unloads the battery cell 200 at the unloading station, the first driving member 102 drives the clamping needle 103 to flatten the battery cell 200, and then the battery cell unloading mechanism 100 places the flattened battery cell 200 between the first pressing plate 302 and the second pressing plate 304 of the shaping mechanism 300, and then the lifting mechanism 303 drives the first pressing plate 302 to approach the second pressing plate 304 to compact the battery cell 200.

[0069] like Fig.10 In the illustrated embodiment, in the third direction, the shaping mechanism 300 is located below the unloading station of the battery cell winding device 400. The battery cell unloading mechanism 100 includes a fourth driving member 501, which is used to drive the mounting plate 101 to move along the third direction to unload the battery cell 200 and convey the flattened battery cell 200 to the shaping mechanism 300. The first direction intersects the third direction.

[0070] Specifically, after the battery core 200 is wound, the fourth driving member 501 drives the mounting plate 101 to move along the third direction, and the clamping needle 103 reaches the position as shown in FIG. Fig.10In the unloading station shown, the clamping needle 103 is opposite to the battery cell 200. Then, the second driving member 105 drives the second movable plate 106 to move in the second direction, so that the clamping needle 103 is close to the winding needle 401. The inner clamping needle 1031 is inserted into the inner ring 201 of the battery cell 200, and the outer clamping needle 1032 is located at the outer ring of the battery cell 200. Then, the inner clamping needle 1031 and the outer clamping needle 1032 move relative to each other to clamp the battery cell 200. At this time, the inner clamping needle 1031 clamps the innermost material strip of the inner ring 201 of the battery cell 200, and the outer clamping needle 1032 clamps the outermost material strip of the outer ring of the battery cell 200, thereby clamping the battery cell 200. Next, the winding needle 401 moves away from the clamping needle 103 along the second direction, thereby disengaging from the battery cell 200, and the unloading of the battery cell 200 is completed. Then, the first driving member 102 drives a pair of clamping needles 103 away from each other in the first direction, flattening the battery cell 200 to form as shown in the figure. Figure 3 The shape shown. Then, the fourth driving member 501 drives the mounting plate 101 to move along the third direction to approach the shaping mechanism 300, and the second driving member 105 drives the second movable plate 106 to move along the second direction, and the flattened battery cell 200 is transported between the first pressing plate 302 and the second pressing plate 304. The battery cell detection sensor 307 can detect that the battery cell 200 is in place, thereby sending a signal to the lifting mechanism 303 or the fifth driving member 308. After receiving the signal from the battery cell detection sensor 307, the lifting mechanism 303 drives the first pressing plate 302 to approach the second pressing plate 304, first pressing the battery cell 200, and then the inner clamping needle 1031 and the outer clamping needle 1032 move away from each other, and the clamping needle 103 releases the battery cell 200. Then, the second driving member 105 drives the clamping needle 103 to move along the second direction to evacuate the clamping needle 103, and the first pressing plate 302 further approaches the second pressing plate 304 to compact the battery cell 200. Alternatively, after receiving the signal from the battery cell detection sensor 307, the fifth driving member 308 first drives the middle pressure plate 309 to approach the second pressure plate 304, thereby applying a clamping force to the middle area of ​​the battery cell 200 located between a pair of clamping needles 103, and the middle part of the battery cell 200 is first compacted, and then the inner clamping needle 1031 and the outer clamping needle 1032 move away from each other, and the clamping needle 103 releases the battery cell 200. Then, the second driving member 105 drives the clamping needle 103 to move in the second direction to withdraw the clamping needle 103, and then, the lifting mechanism 303 drives the first pressure plate 302 to approach the second pressure plate 304 to compact the battery cell 200. After compaction is completed, the lifting mechanism 303 drives the first pressure plate 302 away from the second pressure plate 304, and the compacted and finalized battery cell 200 can leave the finalizing mechanism 300 and enter the next process under the drive of the transmission mechanism 310. The fourth driving member 501 drives the mounting plate 101 to move in the third direction, and the clamping needle 103 returns to the position as shown in the figure. Fig.10 In the position shown, the first driving member 102 drives a pair of clamping needles 103 to approach each other and enter the next working cycle. The whole process is highly automated and convenient for the transportation of the battery core.

[0071] like Fig.11 As shown, in this embodiment, the battery cell unloading mechanism 100 and the transfer mechanism 500 are integrated in the manipulator 502. The clamping claws of the manipulator 502 can unload and flatten the battery cells 200 from the winding needle 401, and then the flattened battery cells 200 are transported by the manipulator 502 to each shaping mechanism 300 in turn for compaction and shaping.

[0072] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0073] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A battery cell blanking and shaping device, characterized in that: include: A battery cell unloading mechanism (100), wherein the battery cell unloading mechanism (100) is used to unload and flatten the battery cell (200); A transfer mechanism (500), the transfer mechanism (500) being connected to the battery cell unloading mechanism (100); A shaping mechanism (300), the shaping mechanism (300) comprising a support (301) and a first pressing plate (302), the support (301) being equipped with a lifting mechanism (303) and a second pressing plate (304), the battery cell unloading mechanism (100) maintaining the battery cell (200) in a flattened state, the transfer mechanism (500) being able to transport the battery cell (200) to between the first pressing plate (302) and the second pressing plate (304), the lifting mechanism (303) being used to drive the first pressing plate (302) to approach the second pressing plate (304) so ​​as to compact the battery cell (200) flattened by the battery cell unloading mechanism (100).

2. The battery core blanking and shaping device according to claim 1, characterized in that: The battery cell unloading mechanism (100) comprises a mounting plate (101) and a pair of clamping pins (103); the mounting plate (101) is mounted with a first driving member (102); each of the clamping pins (103) comprises an inner clamping pin (1031) and an outer clamping pin (1032); the inner clamping pin (1031) and the outer clamping pin (1032) are capable of relative movement to clamp the battery cell (200); the first driving member (102) is capable of driving the pair of clamping pins (103) to move away from each other in a first direction to flatten the battery cell (200).

3. The battery core blanking and shaping device according to claim 2, characterized in that: The battery cell unloading mechanism (100) further comprises a pair of first movable plates (104), each of the first movable plates (104) being provided with a second driving member (105), the second driving member (105) being capable of driving the second movable plate (106) to move along a second direction, the clamping needle (103) being mounted on the second movable plate (106), the first driving member (102) being capable of driving a pair of the first movable plates (104) to move away from each other along a first direction, the first direction intersecting with the second direction.

4. The battery core blanking and shaping device according to claim 3, characterized in that: The inner clamping needle (1031) is fixed to the second movable plate (106), and the second movable plate (106) is equipped with a third driving member (107), and the third driving member (107) is used to drive the outer clamping needle (1032) to approach or move away from the inner clamping needle (1031) along the first direction; or, the outer clamping needle (1032) is fixed to the second movable plate (106), and the second movable plate (106) is equipped with a third driving member (107), and the third driving member (107) is used to drive the inner clamping needle (1031) to approach or move away from the outer clamping needle (1032) along the first direction.

5. The battery core blanking and shaping device according to claim 1, characterized in that: The transfer mechanism (500) comprises a fourth driving member (501); in a third direction, the shaping mechanism (300) is located below a material unloading station; the fourth driving member (501) is used to drive the mounting plate (101) to move along a third direction so that the battery cell unloading mechanism (100) can reach the material unloading station or the shaping mechanism (300) position; the third direction intersects with the first direction.

6. The battery core blanking and shaping device according to claim 1, characterized in that: The battery cell unloading mechanism (100) and the transfer mechanism (500) are integrated into a manipulator (502), the battery cell unloading and shaping device comprises at least one shaping mechanism (300), and the manipulator (502) is capable of unloading and flattening the battery cells (200) and then conveying them to each shaping mechanism (300).

7. The battery core blanking and shaping device according to claim 1, characterized in that: The lifting mechanism (303) is connected to a lifting plate (305), the lifting plate (305) is connected to the first pressing plate (302), a pressure sensor (306) is provided between the lifting plate (305) and the first pressing plate (302), and the lifting mechanism (303) adjusts the pressing force applied to the battery cell (200) according to a signal of the pressure sensor (306).

8. The battery core blanking and shaping device according to claim 1, characterized in that: The second pressing plate (304) is installed with a battery cell detection sensor (307), and the battery cell detection sensor (307) is used to detect whether there is a battery cell (200) between the first pressing plate (302) and the second pressing plate (304). The lifting mechanism (303) drives the first pressing plate (302) to approach the second pressing plate (304) according to the signal of the battery cell detection sensor (307).

9. The battery core blanking and shaping device according to claim 1, characterized in that: The first pressing plate (302) is installed with a fifth driving member (308), and before the first pressing plate (302) approaches the second pressing plate (304), the fifth driving member (308) can drive the middle pressing plate (309) to approach the second pressing plate (304) to apply a pressing force to the middle part of the battery cell (200).

10. The battery core blanking and shaping device according to claim 1, characterized in that: It also includes a transmission mechanism (310), wherein the transmission mechanism (310) includes a transmission belt (313), and the transmission belt (313) is sleeved on the second pressing plate (304).

11. A battery cell production device, characterized in that: include: A battery cell winding device (400), the battery cell winding device (400) comprising a winding needle (401), the winding needle (401) being used to wind a material strip to form a battery cell (200); According to any one of claims 1 to 10, the battery cell blanking and shaping device is used to blank, flatten and compact the battery cell (200) wound by the winding needle (401).

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