Diaphragm laying device and lamination system

Abstract

The utility model relates to the technical field of batteries, and discloses a diaphragm laying device and a lamination system. Wherein the diaphragm laying device comprises two sets of diaphragm placing mechanisms, a traction mechanism and a controller, the two sets of diaphragm placing mechanisms are suitable for being arranged at the two ends of the stacking table in the length direction correspondingly, the traction mechanism is arranged between the two sets of diaphragm placing mechanisms, and the controller is configured to receive the situation that the traction mechanism is located at the diaphragm feeding position and clamps a diaphragm; the traction mechanism is controlled to move to the membrane placing position along the stacking table, the membrane placing mechanism providing the membrane is controlled to move towards the stacking table by a set distance, and the membrane placing mechanism not providing the membrane is controlled to move away from the stacking table by the set distance. The controller controls the diaphragm placing mechanism for providing the diaphragm to move towards the stacking table by a set distance, so that the diaphragm placing mechanism for providing the diaphragm is close to the end part of the stacking table, the distance between the edge of the diaphragm and the end part of the stacking table is as small as possible after the diaphragm is cut subsequently, and diaphragm waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a diaphragm laying device and a lamination system. Background Art

[0002] A battery is a device that can convert chemical energy into electrical energy. It consists of a positive electrode, a negative electrode, and an electrolyte. When a conductive circuit is connected between the positive and negative electrodes, a chemical reaction occurs in the battery, generating electron flow and potential difference, thereby achieving energy conversion.

[0003] In the prior art, during the manufacturing process of the battery, the pole core is prepared by stacking the positive electrode sheet and the negative electrode sheet, separating them with a diaphragm in the middle, to form a positive and negative electrode stacking structure. Usually, a diaphragm pulling device is used to pull the diaphragm and lay the diaphragm on the stacking table. After the diaphragm is laid on the stacking table, the diaphragm at the membrane end is cut by the diaphragm cutting piece. However, after the diaphragm cutting piece has finished cutting the diaphragm, there is still a long distance between the cut end of the diaphragm and the end of the stacking table, resulting in diaphragm waste. Utility Model Content

[0004] In view of this, the utility model provides a diaphragm laying device to solve the problem that after the diaphragm cutting piece completes cutting of the diaphragm, there is still a long distance between the cut end of the diaphragm and the end of the stacking platform, resulting in waste of diaphragm.

[0005] In a first aspect, the utility model provides a diaphragm laying device, suitable for laying diaphragms on stacking platforms, comprising:

[0006] Two sets of film placing mechanisms are respectively arranged at the two ends of the stacking table in the length direction;

[0007] A traction mechanism is arranged between the two groups of the film placing mechanisms, and is suitable for the two groups of the film placing mechanisms to alternately provide the diaphragm, and the traction mechanism has a film placing position and a film placing position respectively;

[0008] The controller is configured to receive that the traction mechanism is located at the upper film position and clamps the diaphragm, control the traction mechanism to move along the stacking table to the film placing position, control the film placing mechanism that provides the diaphragm to move a set distance toward the stacking table, and control the film placing mechanism that does not provide the diaphragm to move a set distance away from the stacking table.

[0009] Beneficial effect: In this diaphragm laying device, the traction mechanism moves to one end close to the stacking table. When the controller receives the signal that the traction mechanism has reached the upper film position and clamped the diaphragm on the film placing mechanism on the side, the traction mechanism is controlled to move along the length direction of the stacking table to the film placing position at the other end of the stacking table while clamping the diaphragm. At the same time, the controller controls the film placing mechanism that provides the diaphragm to move a set distance toward the stacking table, so that the film placing mechanism that provides the diaphragm is close to the end of the stacking table, ensuring that after the subsequent cutting of the diaphragm, the distance between the edge of the diaphragm and the end of the stacking table is as small as possible, so as to save the amount of diaphragm and reduce the waste of diaphragm. In addition, the film placing mechanism can move with the traction mechanism, and the cutting mechanism of the diaphragm laying device can be integrated with the film placing mechanism and set at the position where the film placing mechanism fixes the diaphragm, so that there will be no problem of diaphragm sagging after the cutting mechanism cuts the diaphragm, so that the traction mechanism can clamp the cut diaphragm. In addition, the controller controls the film placing mechanism without diaphragm to move a set distance away from the stacking table, so that the film placing mechanism without diaphragm is away from the end of the stacking table, leaving the required space for the traction mechanism during the diaphragm laying process, ensuring the diaphragm laying length, and completing the one-way diaphragm laying.

[0010] Similarly, the traction mechanism moves to the other end close to the stack, and when the controller receives the signal that the traction mechanism has reached the upper film position and clamped the diaphragm on the film placing mechanism on the side, the traction mechanism is controlled to move along the length direction of the stack to the film placing position at one end of the stack while clamping the diaphragm. At the same time, the controller controls the film placing mechanism that provides the diaphragm to move a set distance toward the stack, so that the film placing mechanism that provides the diaphragm is close to the end of the stack, thereby ensuring that after the subsequent cutting of the diaphragm, the distance between the edge of the diaphragm and the end of the stack is as small as possible, so as to save the amount of diaphragm and reduce the waste of diaphragm. In addition, the film placing mechanism can move with the traction mechanism, and the cutting mechanism of the diaphragm laying device can be integrated with the film placing mechanism and set at the position where the film placing mechanism fixes the diaphragm, so that there will be no problem of diaphragm sagging after the cutting mechanism cuts the diaphragm, so that the traction mechanism can clamp the cut diaphragm. In addition, the controller controls the film placing mechanism without diaphragm to move a set distance away from the stacking table, so that the film placing mechanism without diaphragm is away from the end of the stacking table, leaving the required space for the traction mechanism during the diaphragm laying process, ensuring the diaphragm laying length, and completing the return diaphragm laying.

[0011] In an optional embodiment, the traction mechanism includes a first driving member, each group of the film placing mechanisms includes a second driving member, the controller is electrically connected to the first driving member and the two groups of the second driving members, and the controller is configured to receive a start signal from the first driving member, control the two groups of the second driving members to drive the two groups of the film placing mechanisms to move a set distance in the same direction, so that the film placing mechanism that provides the diaphragm is close to the stacking table, and the film placing mechanism that does not provide the diaphragm is away from the stacking table.

[0012] Beneficial effect: when the controller receives the start signal of the first driving member, the first driving member drives the traction mechanism to move, and the controller controls the two groups of second driving members to respectively drive the two groups of film-laying mechanisms to move a set distance in the same direction. The controller controls the start of the two groups of second driving members according to the start signal of the first driving member. There is no need to set other detection signal or transmitting signal components on the diaphragm laying device. The structure is simple, which reduces the manufacturing cost of the diaphragm laying device, and the linkage between the first driving member and the second driving member is rapid, thereby improving the efficiency of the diaphragm laying device.

[0013] In an optional embodiment, the controller is configured to control the two groups of film placing mechanisms to move set distances respectively in response to stop position signals or operation set time signals of the two groups of the second driving members.

[0014] Beneficial effect: The controller controls the two sets of second driving members through the stop position signals or running set time signals of the two sets of second driving members, so that the two sets of film placing mechanisms can accurately move the set distances respectively, thereby achieving the precise stop of the film placing mechanisms at the required positions.

[0015] In an optional embodiment, each group of the film placing mechanisms further includes a mounting frame, a third driving member and a film placing clamp, wherein the film placing clamp is arranged on the mounting frame, and the third driving member is used to drive the film placing clamp to fix or loosen the diaphragm, and the two groups of the third driving members are electrically connected to the controller respectively.

[0016] Beneficial effects: By arranging a film placing clamp on the mounting frame, the third driving member controls the film placing clamp to fix or release the diaphragm, and the third driving member drives the film placing clamp to fix the diaphragm, so that the film placing mechanism without providing the diaphragm can move the film placing mechanism in the state of fixing the diaphragm, so that the subsequent traction mechanism clamps the diaphragm on the film placing mechanism without providing the diaphragm. The third driving member drives the film placing clamp to release the diaphragm, so that the film placing mechanism with the diaphragm can provide the traction mechanism with the traction mechanism pulling the film in the state of releasing the diaphragm.

[0017] In an optional embodiment, each group of the film releasing mechanisms further includes a diaphragm cutting member, each group of the diaphragm cutting members is disposed on the corresponding mounting frame, each group of the mounting frame is provided with a fourth driving member, and each group of the fourth driving member is used to drive the corresponding diaphragm cutting member to cut the diaphragm.

[0018] Beneficial effect: By arranging a diaphragm cutting piece on each set of film placing mechanisms, the diaphragm cutting piece is driven by the fourth driving member to cut the diaphragm, thereby realizing automatic diaphragm cutting and improving the diaphragm cutting efficiency. At the same time, the diaphragm cutting piece moves together with the film placing mechanism to ensure that the distance between the edge of the cut diaphragm and the end of the stacking table is as small as possible, thereby reducing diaphragm waste.

[0019] In an optional embodiment, the controller is configured to receive a start signal from the first driving member, and control the third driving member of the film releasing mechanism providing the diaphragm to drive the film releasing clamp to release the diaphragm.

[0020] Beneficial effect: When the controller receives the start signal from the first driving member, the first driving member drives the traction mechanism to clamp the diaphragm and move it, and the controller controls the third driving member of the film releasing mechanism that provides the diaphragm to drive the film releasing clamp to release the diaphragm, so that the traction mechanism can normally pull out the diaphragm on the film releasing mechanism that provides the diaphragm to successfully complete the diaphragm laying.

[0021] In an optional embodiment, the controller is configured to receive a signal from the traction mechanism clamping the diaphragm and moving it to the film placing position, and control the third driving member of the film placing mechanism providing the diaphragm to drive the film placing clamp to fix the diaphragm.

[0022] Beneficial effect: When the controller receives a signal that the traction mechanism clamps the diaphragm and moves it to the film release position, the traction mechanism pulls the diaphragm to complete the diaphragm laying action, and the controller controls the third driving member of the film release mechanism that provides the diaphragm to drive the film release clamp to fix the diaphragm, so that the two ends of the laid diaphragm are respectively fixed by the traction mechanism and the film release clamp, so that the diaphragm cutting member can cut the diaphragm and prevent it from shrinking due to tension during the cutting process.

[0023] In an optional embodiment, the controller is electrically connected to two groups of the fourth driving members respectively, and the controller is configured to receive a signal from the film clamp to fix the diaphragm, and control the corresponding fourth driving member to drive the diaphragm cutting member to cut the diaphragm.

[0024] Beneficial effect: When the controller receives a signal that the traction mechanism clamps the diaphragm and moves it to the film release position, and the controller receives a signal that the film release clamp fixes the diaphragm, the controller controls the fourth driving member to drive the diaphragm cutting member to cut the diaphragm, thereby completing automated diaphragm cutting.

[0025] In an optional embodiment, it further includes a guide rail, which is arranged at both ends of the stacking platform in the length direction and extends along the length direction of the stacking platform, and the second driving member is used to drive the mounting frame to move along the guide rail direction.

[0026] Beneficial effect: By setting guide rails at both ends of the stacking platform, the mounting frame is moved on the guide rails, and the guide rails provide guidance for the movement of the mounting frame, ensuring that the mounting frame moves along a predetermined track, thereby improving the accuracy and stability of the film placing mechanism.

[0027] In a second aspect, the utility model further provides a lamination system, comprising:

[0028] Stacking platform;

[0029] A transport device, suitable for transporting the pole piece to the stacking platform;

[0030] The diaphragm laying device is installed at both ends of the stack in the length direction and is suitable for laying the diaphragm on the stack.

[0031] Beneficial effect: This stacking system transports the pole piece to the stacking table by means of a transport device, and clamps the diaphragm on the film placing mechanism by a traction mechanism, and moves along the length direction of the stacking table until the traction mechanism moves to the other end of the stacking table, and then transports the pole piece to the diaphragm of the stacking table by means of a transport device, and clamps the diaphragm on the film placing mechanism by a traction mechanism, and pulls the diaphragm to the other end of the stacking table, and repeats the above process until the pole core is completed.

[0032] While the traction mechanism clamps the diaphragm and moves, the controller controls the two sets of film-laying mechanisms to move in the same direction as the traction mechanism, so that the film-laying mechanism that provides the diaphragm is close to the end of the stack, ensuring that after the subsequent diaphragm cutting, the distance between the edge of the diaphragm and the end of the stack is as small as possible, reducing the waste of diaphragms, and making the film-laying mechanism that does not provide diaphragms away from the end of the stack, leaving the required space for the traction mechanism in the process of laying the diaphragm. In the process of preparing the pole core, the traction mechanism clamps the diaphragm and switches between the two sets of film-laying mechanisms, which improves the efficiency of preparing the pole core. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 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.

[0034] Figure 1 This is a front view of a diaphragm laying device according to an embodiment of the utility model;

[0035] Figure 2 for Figure 1 The schematic diagram of the structure of the membrane placing mechanism in the diaphragm laying device is shown.

[0036] Description of reference numerals:

[0037] 1. Stacking table; 2. Traction mechanism; 3. Film placing mechanism; 301. Second driving member; 302. Diaphragm cutting member; 303. Mounting frame; 304. Third driving member; 305. First clamping block; 306. Second clamping block; 307. Fourth driving member; 308. Guide rail. DETAILED DESCRIPTION

[0038] 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.

[0039] In the related art, during the manufacturing process of the battery, the preparation method of the pole core is to stack the positive electrode sheet and the negative electrode sheet, and separate them with a diaphragm in the middle to form a positive and negative electrode stacking structure. Usually, a diaphragm pulling device is used to pull the diaphragm and lay the diaphragm on the stacking table. After the diaphragm is laid on the stacking table, the diaphragm at the membrane end is cut by the diaphragm cutting piece. However, after the diaphragm cutting piece has finished cutting the diaphragm, there is still a long distance between the cut end of the diaphragm and the end of the stacking table, resulting in diaphragm waste.

[0040] In order to solve the above technical problems, the following Figure 1 to Figure 2 , describing an embodiment of the utility model.

[0041] According to an embodiment of the present utility model, on the one hand, as Figure 1 As shown, a diaphragm laying device is provided, which is suitable for laying diaphragms on a stacking platform 1, and includes two sets of film laying mechanisms 3, a traction mechanism 2 and a controller.

[0042] Specifically, Figure 1 As shown, two sets of film placing mechanisms 3 are suitable to be respectively arranged at two ends of the stacking platform 1 in the length direction.

[0043] Specifically, Figure 1 As shown, the traction mechanism 2 is arranged between the two groups of film placing mechanisms 3. The traction mechanism 2 is suitable for alternately providing diaphragms by the two groups of film placing mechanisms 3. The traction mechanism 2 has a film loading position and a film placing position.

[0044] Specifically, the controller (not shown in the figure) is configured to receive a signal that the traction mechanism 2 is located at the upper film position and clamps the diaphragm, control the traction mechanism 2 to move along the stacking platform 1 to the film placing position, and control the film placing mechanism 3 that provides the diaphragm to move a set distance toward the stacking platform 1, and control the film placing mechanism 3 that does not provide the diaphragm to move a set distance away from the stacking platform 1.

[0045] In this diaphragm laying device, the traction mechanism 2 moves to one end close to the stacking platform 1. When the controller receives the signal that the traction mechanism 2 has reached the upper film position and clamped the diaphragm on the film placing mechanism 3 on the side, the traction mechanism 2 is controlled to move along the length direction of the stacking platform 1 to the film placing position at the other end of the stacking platform 1 while clamping the diaphragm. At the same time, the controller controls the film placing mechanism 3 that provides the diaphragm to move a set distance toward the stacking platform 1, so that the film placing mechanism 3 that provides the diaphragm is close to the end of the stacking platform 1, ensuring that after the subsequent cutting of the diaphragm, the distance between the edge of the diaphragm and the end of the stacking platform 1 is as small as possible, so as to save the amount of diaphragm and reduce the waste of diaphragm. In addition, the film placing mechanism 3 can move with the traction mechanism 2, and the cutting mechanism of the diaphragm laying device can be integrated with the film placing mechanism 3 and set at the position where the film placing mechanism 3 fixes the diaphragm, so that there will be no problem of diaphragm sagging after the cutting mechanism cuts the diaphragm, so that the traction mechanism 2 can clamp the cut diaphragm. In addition, the controller controls the film placing mechanism 3 without providing the diaphragm to move a set distance away from the stacking platform 1, so that the film placing mechanism 3 without providing the diaphragm is away from the end of the stacking platform 1, leaving the required space for the traction mechanism 2 during the diaphragm laying process, ensuring the diaphragm laying length, and completing the one-way diaphragm laying.

[0046] Similarly, the traction mechanism 2 moves to the other end close to the stack 1. When the controller receives the signal that the traction mechanism 2 has reached the upper film position and clamped the diaphragm on the film placing mechanism 3 on the side, the traction mechanism 2 is controlled to move along the length direction of the stack 1 to the film placing position at one end of the stack 1 while clamping the diaphragm. At the same time, the controller controls the film placing mechanism 3 that provides the diaphragm to move a set distance toward the stack 1, so that the film placing mechanism 3 that provides the diaphragm is close to the end of the stack 1, thereby ensuring that after the subsequent cutting of the diaphragm, the distance between the edge of the diaphragm and the end of the stack 1 is as small as possible, so as to save the amount of diaphragm and reduce the waste of diaphragm. In addition, the film placing mechanism 3 can move with the traction mechanism 2, and the cutting mechanism of the diaphragm laying device can be integrated with the film placing mechanism 3 and arranged at the position where the film placing mechanism 3 fixes the diaphragm, so that there will be no problem of diaphragm sagging after the cutting mechanism cuts the diaphragm, so that the traction mechanism 2 can clamp the cut diaphragm. In addition, the controller controls the film placing mechanism 3 without providing the diaphragm to move a set distance away from the stacking platform 1, so that the film placing mechanism 3 without providing the diaphragm is away from the end of the stacking platform 1, leaving the required space for the traction mechanism 2 during the diaphragm laying process, ensuring the diaphragm laying length, and completing the return diaphragm laying.

[0047] It should be noted that, with respect to the film loading position and the film placing position, it can be understood that the film loading position and the film placing position are respectively provided at the position of the corresponding traction mechanism 2 near one end of the stacking platform 1, and the film loading position and the film placing position are also respectively provided at the position of the corresponding traction mechanism 2 near the other end of the stacking platform 1. When the traction mechanism 2 is at the film loading position, the traction mechanism 2 clamps the diaphragm on the film placing mechanism 3 on the side where it is located; when the traction mechanism 2 is at the film placing position, the traction mechanism 2 releases the laid diaphragm.

[0048] Specifically, the controller may be an existing controller such as a PLC (programmable logic controller), a microcontroller or a computer control system. In the embodiments of the present application, the type of controller is not specifically limited.

[0049] It should be noted that the length of the set distance should be greater than or equal to the length of the traction mechanism 2 to ensure that the traction mechanism 2 can stay between the end of the stacking platform 1 and the film placing mechanism 3 on the side thereof, leaving the required space for the traction mechanism 2 during the process of laying the diaphragm.

[0050] The diaphragm may be cut by mechanical cutting, hot wire cutting or manual cutting, etc. In the embodiments of the present application, the method of cutting the diaphragm is not specifically limited.

[0051] Specifically, the diaphragm laying device may be provided with sensors such as position sensors or optical sensors, and the sensors are used to receive signals indicating that the traction mechanism 2 is located at the upper membrane position and clamps the diaphragm.

[0052] Specifically, the traction mechanism 2 is provided with clamping members for clamping the diaphragm on both sides facing the two sets of film release mechanisms 3, wherein the clamping member can be a clamping claw or a traction clamp. In the embodiment of the present application, the clamping member of the traction mechanism 2 is not specifically limited. In an implementable manner of the present application, traction clamps are provided on both sides of the traction mechanism 2, and the diaphragm is clamped and released by the traction clamps.

[0053] In one embodiment, if Figure 1 and Figure 2 As shown, the traction mechanism 2 includes a first driving member (not shown in the figure), and the first driving member is used to drive the traction mechanism 2 to move along the length direction of the stacking platform 1. Each group of film placing mechanisms 3 includes a second driving member 301, and each group of second driving members 301 drives the corresponding film placing mechanism 3 to move toward the stacking platform 1 or away from the stacking platform 1. Among them, the controller is electrically connected to the first driving member and the two groups of second driving members 301, respectively, and the controller is configured to receive a start signal of the first driving member, control the two groups of second driving members 301 to drive the two groups of film placing mechanisms 3 to move a set distance in the same direction, so that the film placing mechanism 3 providing the diaphragm is close to the stacking platform 1, and the film placing mechanism 3 not providing the diaphragm is away from the stacking platform 1.

[0054] When the controller receives the start signal of the first driving member, the first driving member drives the traction mechanism 2 to move, and the controller controls the two groups of second driving members 301 to respectively drive the two groups of film laying mechanisms 3 to move a set distance in the same direction. The controller controls the start of the two groups of second driving members 301 according to the start signal of the first driving member. There is no need to set other detection signal or transmitting signal components on the diaphragm laying device. The structure is simple, which reduces the manufacturing cost of the diaphragm laying device, and the first driving member and the second driving member 301 are linked and coordinated to improve the efficiency of the diaphragm laying device.

[0055] In one embodiment, the controller is configured to respond to the stop position signal or the operation setting time signal of the two sets of second driving members 301. The controller controls the two sets of second driving members through the stop position signal or the operation setting time signal of the two sets of second driving members 301, so that the two sets of film placing mechanisms 3 can accurately move the set distance respectively, so as to achieve the film placing mechanism 3 to accurately stop at the required position. For example, a proximity switch can be set at a certain position close to or away from the stacking table 1. When the film placing mechanism 3 moves to the proximity switch position, the proximity switch is triggered to send a signal to the controller. After receiving the signal, the controller controls the film placing mechanism 3 to stop, or a timer electrically connected to the controller is set on the film placing mechanism 3 or the controller, and the controller is set to trigger the timer to start timing when the second driving member 301 is started. For example, the controller sends a signal to the controller when the timer is preset to count for 15 seconds. After receiving the signal, the controller controls the film placing mechanism 3 to stop, and the stop position is the target stop position.

[0056] Specifically, if the second driving member 301 is a stepping motor, the controller can also directly control the second driving member 301 to enable the film placing mechanism 3 to accurately stay at the desired position.

[0057] Specifically, the diaphragm laying device can also be provided with a sensor, and the controller is electrically connected to the sensor. The controller continuously monitors the position of the film placing mechanism 3 through the sensor, and adjusts it according to the difference between the actual position and the target position to ensure that the film placing mechanism 3 stays accurately at the required position.

[0058] In one embodiment, if Figure 2 As shown, each group of film placing mechanism 3 also includes a mounting frame 303, a third driving member 304 and a film placing clamp, the film placing clamp is arranged on the mounting frame 303, the third driving member 304 is connected to the film placing clamp, the third driving member 304 is used to drive the film placing clamp to fix or loosen the diaphragm, and the two groups of third driving members 304 are electrically connected to the controller respectively. By arranging the film placing clamp on the mounting frame 303, the third driving member 304 is used to control the film placing clamp to fix or loosen the diaphragm, and the third driving member 304 drives the film placing clamp to fix the diaphragm, so that the film placing mechanism 3 without providing the diaphragm can move the film placing mechanism 3 in the state of fixing the diaphragm, so that the subsequent traction mechanism 2 clamps the diaphragm on the film placing mechanism 3 without providing the diaphragm. The film placing clamp is driven by the third driving member 304 to loosen the diaphragm, so that the film placing mechanism 3 with the diaphragm provided can provide the traction mechanism 2 with the diaphragm pulled in the state of loosening the diaphragm.

[0059] Specifically, the membrane clamp can be a clamping piece such as a clamping claw or a clamping block, and it is sufficient to ensure that the membrane clamp can normally fix or loosen the diaphragm. In the embodiment of the present application, the specific structure of the membrane clamp is not limited.

[0060] For example, Figure 2 As shown, the membrane clamp includes a first clamp block 305 and a second clamp block 306, which are relatively arranged on the mounting frame 303, and the first clamp block 305 and the second clamp block 306 are suitable for passing the diaphragm, and the third driving member 304 is used to drive the first clamp block 305 and / or the second clamp block 306 to move relative to each other to fix or loosen the diaphragm.

[0061] In one embodiment, each set of film placing mechanisms 3 further includes a membrane cutting member 302, each set of membrane cutting members 302 is arranged on a corresponding mounting frame 303, each set of mounting frames 303 is provided with a fourth driving member 307, and each set of fourth driving members 307 is used to drive the corresponding membrane cutting member 302 to cut the membrane. By providing a membrane cutting member 302 on each set of film placing mechanisms 3, the membrane cutting member 302 is driven by the fourth driving member 307 to cut the membrane, thereby realizing automatic membrane cutting and improving the efficiency of membrane cutting. At the same time, the membrane cutting member 302 moves with the film placing mechanism 3, ensuring that the distance between the edge of the cut membrane and the end of the stacking platform 1 is as small as possible, thereby reducing the waste of membrane.

[0062] Specifically, the diaphragm cutting piece 302 can be arranged between the film placing clamp and the traction mechanism 2 to ensure that after the diaphragm cutting piece 302 cuts the diaphragm, the diaphragm is in the film placing clamp area, and the film placing clamp can fix the diaphragm normally.

[0063] In one embodiment, the controller is configured to receive a start signal from the first drive member, and control the third drive member 304 of the film placing mechanism 3 providing the diaphragm to drive the film placing clamp to release the diaphragm. When the controller receives a start signal from the first drive member, the first drive member drives the traction mechanism 2 to clamp the diaphragm and move, and the controller controls the third drive member 304 of the film placing mechanism 3 providing the diaphragm to drive the film placing clamp to release the diaphragm, so that the traction mechanism 2 can normally pull out the diaphragm on the film placing mechanism 3 providing the diaphragm, so as to successfully complete the diaphragm laying.

[0064] In one embodiment, the controller is configured to receive a signal that the traction mechanism 2 clamps the diaphragm and moves it to the film placement position, and controls the third driving member 304 of the film placement mechanism 3 that provides the diaphragm to drive the film placement clamp to fix the diaphragm. When the controller receives a signal that the traction mechanism 2 clamps the diaphragm and moves it to the film placement position, at this time, the traction mechanism 2 pulls the diaphragm to complete the diaphragm laying action, and the controller controls the third driving member 304 of the film placement mechanism 3 that provides the diaphragm to drive the film placement clamp to fix the diaphragm, so that the two ends of the laid diaphragm are respectively fixed by the traction mechanism 2 and the film placement clamp, so that the diaphragm cutting member 302 can cut the diaphragm to prevent it from shrinking due to tension during the cutting process.

[0065] In one embodiment, the controller is electrically connected to two sets of fourth driving members 307, respectively, and the controller is configured to receive a signal from the film placing clamp to fix the diaphragm, and control the corresponding fourth driving member 307 to drive the diaphragm cutting member 302 to cut the diaphragm. When the controller receives a signal from the traction mechanism 2 clamping the diaphragm to move to the film placing position, and the controller receives a signal from the film placing clamp to fix the diaphragm, the controller controls the fourth driving member 307 to drive the diaphragm cutting member 302 to cut the diaphragm, thereby completing the automated diaphragm cutting.

[0066] In one embodiment, if Figure 2 As shown, it also includes guide rails 308, which are arranged at both ends of the stacking platform 1 in the length direction and extend along the length direction of the stacking platform 1. The second driving member 301 is used to drive the mounting frame 303 to move along the guide rails 308. By arranging the guide rails 308 at both ends of the stacking platform 1, the mounting frame 303 is moved and arranged on the guide rails 308, and the guide rails 308 provide guidance for the movement of the mounting frame 303, ensuring that the mounting frame 303 moves along a predetermined track, thereby improving the accuracy and stability of the film placing mechanism 3.

[0067] According to an embodiment of the present utility model, on the other hand, Figure 1 and Figure 2 As shown, a stacking system is also provided, including a stacking platform 1, a transport device and a diaphragm laying device.

[0068] Specifically, the transport device (not shown in the figure) is suitable for transporting the pole pieces to the stacking platform 1 .

[0069] Specifically, two sets of film placing mechanisms 3 are respectively arranged at two ends of the stacking platform 1 in the length direction, and the traction mechanism 2 is arranged between the two sets of film placing mechanisms 3 and is suitable for laying the diaphragm on the stacking platform 1 .

[0070] In this stacking system, the pole piece is transported to the stacking platform 1 by a transport device, the diaphragm on the film placing mechanism 3 is clamped by a traction mechanism 2, and moved along the length direction of the stacking platform 1 until the traction mechanism 2 moves to the other end of the stacking platform 1, and then the pole piece is transported to the diaphragm of the stacking platform 1 by a transport device, the diaphragm on the film placing mechanism 3 is clamped by the traction mechanism 2, and the diaphragm is pulled to the other end of the stacking platform 1, and the above process is repeated until the pole core is completed.

[0071] While the traction mechanism 2 clamps the diaphragm and moves, the controller controls the two sets of film placing mechanisms 3 to move in the same direction as the traction mechanism 2, so that the film placing mechanism 3 providing the diaphragm is close to the end of the stack 1, ensuring that after the subsequent cutting of the diaphragm, the distance between the edge of the diaphragm and the end of the stack 1 is as small as possible, reducing the waste of diaphragms, and making the film placing mechanism 3 that does not provide the diaphragm away from the end of the stack 1, leaving the required space for the traction mechanism 2 in the process of laying the diaphragm. In the process of preparing the pole core, the traction mechanism 2 clamps the diaphragm and switches between the two sets of film placing mechanisms 3, which improves the preparation efficiency of the pole core.

[0072] It should be noted that the first driving member, the second driving member 301, the third driving member 304 and the fourth driving member 307 can be selected from motors, cylinders or hydraulic cylinders, etc. In the embodiment of the present application, the types of the first driving member, the second driving member 301, the third driving member 304 and the fourth driving member 307 are not specifically limited.

[0073] The working principle of the lamination system in this embodiment is described as follows:

[0074] In order to better illustrate the working principle of the lamination system, traction clamps are respectively provided on both sides of the traction mechanism 2 to clamp and release the diaphragm.

[0075] 1) The handling device carries the pole piece to the stacking platform 1:

[0076] After the electrode pieces are cut mechanically or by laser, the cut electrode pieces are transported to the stacking platform 1 by a transport device.

[0077] 2) After the pole piece is transported, the traction mechanism 2 clamps the diaphragm:

[0078] After the pole piece is transported, one set of traction clamps on the traction mechanism 2 is in a clamped state and clamps the diaphragm, and moves from one end of the stack 1 to the other end of the stack 1. The controller controls the film placing mechanism 3 that provides the diaphragm to move a set distance toward the stack 1, so that the film placing mechanism 3 that provides the diaphragm is close to the end of the stack 1, ensuring that after the subsequent cutting of the diaphragm, the distance between the edge of the diaphragm and the end of the stack 1 is as small as possible, reducing the waste of the diaphragm. In addition, the controller controls the film placing mechanism 3 that does not provide the diaphragm to move a set distance away from the stack 1, so that the film placing mechanism 3 that does not provide the diaphragm is away from the end of the stack 1, leaving the required space for the traction mechanism 2 in the process of laying the diaphragm.

[0079] 3) The traction mechanism 2 clamps the diaphragm and moves it to the other end of the stacking platform 1, then releases the diaphragm:

[0080] When the traction clamp holding the diaphragm moves to the film releasing position, the traction clamp releases the diaphragm.

[0081] It should be noted that before the traction clamp releases the diaphragm, the transport device transports the pole piece to the stacking platform 1 again so that the pole piece covers the layer of diaphragm just pulled, and the cylinder press can be used to press the pole piece. At the moment the pole piece presses the diaphragm, the traction clamp releases the diaphragm.

[0082] 4) The traction mechanism 2 moves to the other end of the stacking platform 1 and clamps a new diaphragm.

[0083] 5) After the traction mechanism 2 completes the unidirectional movement:

[0084] After the traction mechanism 2 completes the unidirectional movement, the above movement processes 1) to 4) are repeated until the pole core is completed.

[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 diaphragm laying device, suitable for laying diaphragms on a stack (1), characterized in that: include: Two sets of film placing mechanisms (3) are respectively arranged at two ends of the stacking platform (1) in the length direction; The traction mechanism (2) is arranged between the two groups of the film placing mechanisms (3) and is suitable for the two groups of the film placing mechanisms (3) to alternately provide the diaphragm, and the traction mechanism (2) has a film placing position and a film placing position respectively; The controller is configured to receive that the traction mechanism (2) is located at the upper film position and clamps the diaphragm, control the traction mechanism (2) to move along the stacking platform (1) to the film placing position, control the film placing mechanism (3) that provides the diaphragm to move a set distance toward the stacking platform (1), and control the film placing mechanism (3) that does not provide the diaphragm to move a set distance away from the stacking platform (1).

2. The diaphragm laying device according to claim 1, characterized in that: The traction mechanism (2) includes a first driving member, and each group of the film placing mechanisms (3) includes a second driving member (301). The controller is electrically connected to the first driving member and the two groups of the second driving members (301), respectively. The controller is configured to receive a start signal from the first driving member, control the two groups of the second driving members (301), and respectively drive the two groups of the film placing mechanisms (3) to move a set distance in the same direction, so that the film placing mechanisms (3) that provide a diaphragm are close to the stacking platform (1), and the film placing mechanisms (3) that do not provide a diaphragm are away from the stacking platform (1).

3. The diaphragm laying device according to claim 2, characterized in that: The controller is configured to control the two groups of film placing mechanisms (3) to move respectively a set distance in response to the stop position signals or the operation setting time signals of the two groups of the second driving members (301).

4. The diaphragm laying device according to claim 2, characterized in that: Each group of the film placing mechanisms (3) further comprises a mounting frame (303), a third driving member (304) and a film placing clamp, wherein the film placing clamp is arranged on the mounting frame (303), and the third driving member (304) is used to drive the film placing clamp to fix or loosen the diaphragm, and the two groups of the third driving members (304) are respectively electrically connected to the controller.

5. The diaphragm laying device according to claim 4, characterized in that: Each group of the film placing mechanisms (3) further comprises a diaphragm cutting member (302), each group of the diaphragm cutting members (302) is arranged on the corresponding mounting frame (303), each group of the mounting frame (303) is provided with a fourth driving member (307), and each group of the fourth driving member (307) is used to drive the corresponding diaphragm cutting member (302) to cut the diaphragm.

6. The diaphragm laying device according to claim 4, characterized in that: The controller is configured to receive a start signal from the first driving member, and control the third driving member (304) of the film releasing mechanism (3) providing the diaphragm to drive the film releasing clamp to release the diaphragm.

7. The diaphragm laying device according to claim 4, characterized in that: The controller is configured to receive a signal from the traction mechanism (2) clamping the diaphragm and moving it to the film placing position, and control the third driving member (304) of the film placing mechanism (3) providing the diaphragm to drive the film placing clamp to fix the diaphragm.

8. The diaphragm laying device according to claim 5, characterized in that: The controller is electrically connected to two groups of the fourth driving members (307) respectively, and the controller is configured to receive a signal from the film clamp to fix the diaphragm, and control the corresponding fourth driving member (307) to drive the diaphragm cutting member (302) to cut the diaphragm.

9. The diaphragm laying device according to any one of claims 4 to 8, characterized in that: It also includes a guide rail (308), which is arranged at both ends of the stacking platform (1) in the length direction and extends along the length direction of the stacking platform (1), and the second driving member (301) is used to drive the mounting frame (303) to move along the guide rail (308).

10. A lamination system, characterized in that: include: Stacking (1); A transport device, suitable for transporting the pole piece to the stacking platform (1); The diaphragm laying device according to any one of claims 1 to 9 is installed at both ends of the stacking platform (1) in the length direction and is suitable for laying diaphragms on the stacking platform (1).

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