A winding needle mechanism, winding equipment and diaphragm winding method

Abstract

The present invention proposes a needle winding mechanism, a winding device and a diaphragm winding method. The needle winding mechanism includes: a needle winding body, a first clamping member, a second clamping member, and a compression ballistic assembly. The first clamping member is connected to the needle winding body, and the second clamping member is arranged in the needle winding body. The second clamping member is arranged opposite to the first clamping member; the compression ballistic assembly is arranged to drive the second clamping member and the first clamping member to approach each other to perform a clamping action. The present invention can increase the clamping area of ​​the diaphragm head by the second clamping member and the first clamping member by arranging the second clamping member opposite to the first clamping member. By arranging the compression ballistic assembly, the pressure plate can push the second clamping member to quickly clamp the entire diaphragm head without the need for winding auxiliary time, thereby improving the production efficiency of the needle winding mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of battery diaphragm production, and in particular to a winding needle mechanism, a winding device and a diaphragm winding method. Background Art

[0002] With the development of lithium battery technology, lithium batteries are increasingly widely used in the fields of new energy vehicles and energy storage technology, and the market demand for lithium battery products is also increasing. Lithium batteries usually include positive electrode materials, negative electrode materials, and diaphragms. The diaphragms are used to separate positive electrode materials and negative electrode materials to prevent the positive electrode materials and negative electrode materials from contacting each other and causing battery short circuits. Therefore, the diaphragm of lithium batteries is an important component of lithium batteries, and lithium batteries are usually divided into wound batteries and laminated batteries. In the production process of wound batteries, the diaphragm usually needs to be wound. In the prior art, winding needles are usually used to wind the battery cells. First, the head of the diaphragm needs to be clamped. The diaphragm head is clamped by two inner clamps in the winding needle. Before the clamping action is performed, the two inner clamps with a certain distance need to pass through the diaphragm, which requires a long winding auxiliary time, which will make the production efficiency of lithium battery products low. Therefore, it is urgent to improve the existing winding needle structure. Summary of the invention

[0003] An object of the present invention is to provide a winding needle mechanism, a winding device and a diaphragm winding method, which aims to solve the technical problems of long winding auxiliary time and low production efficiency in the prior art.

[0004] To achieve the above-mentioned purpose, a first aspect of an embodiment of the present application provides a needle winding mechanism, comprising:

[0005] The main body of the needle,

[0006] A first clamping member connected to the winding needle body;

[0007] A second clamping member is disposed in the winding needle body, and the second clamping member is disposed opposite to the first clamping member;

[0008] The compression ballistic assembly is configured to drive the second clamping member and the first clamping member to approach each other to perform a clamping action.

[0009] In an implementation of the first aspect of the present application, the compression ballistic assembly includes a pressure plate, a guide rod, and an elastic member. The pressure plate extends along the length direction of the second clamping member. The guide rod and the elastic member are respectively connected to the pressure plate. The elastic member is used to drive the pressure plate to move, and the guide rod is used to limit the moving direction of the pressure plate. In this embodiment, by setting a pressure plate, and the pressure plate extends along the length direction of the second clamping member, the pressure plate and the second clamping member can have a maximum contact area, which is conducive to the compression ballistic assembly pushing the second clamping member to move smoothly in the direction close to the first clamping member; by setting an elastic member, the pressure plate and the first clamping member can be supported by elastic driving force to move, thereby clamping the diaphragm; in this embodiment, by setting a guide rod, the pressure plate can be limited to move up and down along the direction of the guide rod, avoiding the imbalance or tilt of the two ends of the pressure plate during the up and down movement, affecting the clamping effect of the diaphragm, and improving the contact stability between the pressure plate and the first clamping member.

[0010] In an implementation of the first aspect of the present application, the needle winding mechanism includes a first push rod and a first cam, the first push rod is connected to the needle winding body, the first cam is connected to the first push rod, and the first cam is used to drive the second clamping member and the first clamping member to move away from each other. In this embodiment, the first push rod is arranged to drive the first cam to move, and the first cam is arranged to drive the second clamping member and the first clamping member to move away from each other, thereby realizing the release of the diaphragm and improving the diaphragm production and processing efficiency of the needle winding mechanism.

[0011] In an implementation of the first aspect of the present application, the first clamping member and / or the second clamping member is provided with a suction hole, the suction hole is used to absorb the diaphragm, and the second clamping member is provided with a first guide portion, the first guide portion is used to guide the first cam to move in a direction away from the first clamping member. This embodiment realizes the absorption and preliminary fixation of the diaphragm by providing a suction port, and guides the movement of the cam by providing the first guide portion, so that the cam quickly drives the first clamping member to move, and the diaphragm is released, which is conducive to improving the diaphragm production efficiency of the needle winding mechanism.

[0012] The second aspect of the present application also proposes a winding device, including: a base, a diaphragm cutting mechanism, and a needle winding mechanism, wherein the diaphragm cutting mechanism and the needle winding mechanism are arranged on the base, and the needle winding mechanism is the needle winding mechanism described in any one of the above embodiments, and the diaphragm cutting mechanism includes a cutter, a first power source, and a second cam, wherein the first power source is used to drive the cutter to perform a cutting action, and the second cam is used to drive the second clamping member and the first clamping member to move away from each other. In this embodiment, by setting the second cam to drive the second clamping member and the first clamping member to move away from each other, it is beneficial for the cutter to approach the needle winding mechanism to perform the action of cutting the diaphragm, which is beneficial for the winding device to cut the diaphragm and improve the production efficiency of the diaphragm winding process.

[0013] In an implementation of the second aspect of the present application, the winding device includes a rotating mechanism disposed on the base, the needle winding mechanism includes a first needle winding mechanism and a second needle winding mechanism, the first needle winding mechanism and the second needle winding mechanism are respectively connected to the rotating mechanism, and the rotating mechanism is configured to drive the first needle winding mechanism and the second needle winding mechanism to rotate. In this embodiment, by providing the first needle winding mechanism and the second needle winding mechanism, when the first needle winding mechanism or the second needle winding mechanism is switched to another station, the other needle winding mechanism replaces its position, thereby improving the winding efficiency of the diaphragm, and the solution further improves the efficiency of the winding device.

[0014] In an implementation of the second aspect of the present application, the winding device includes a first gluing mechanism and a second gluing mechanism, the first gluing mechanism and the second gluing mechanism are arranged on a base, the first gluing mechanism includes a first boss, the second gluing mechanism includes a second boss, the first gluing mechanism is configured to support the diaphragm through the first boss, and the second gluing mechanism is configured to push the first diaphragm toward the winding needle mechanism through the second boss to assist the winding needle mechanism in performing the gluing action.

[0015] This embodiment improves the gluing efficiency of the winding device by providing a first gluing mechanism and a second gluing mechanism, and supporting the diaphragm by the first boss and the second boss to assist the winding needle mechanism in performing the gluing action.

[0016] In an implementation of the second aspect of the present application, the winding device includes a first driving mechanism, a second driving mechanism, and a third driving mechanism, the first driving mechanism, the second driving mechanism, and the third driving mechanism are all arranged on a base, the diaphragm cutting mechanism, the first gluing mechanism, and the second gluing mechanism are respectively provided with a first sliding assembly, a second sliding assembly, and a third sliding assembly, the first sliding assembly, the second sliding assembly, and the third sliding assembly are respectively arranged on the base;

[0017] The first driving mechanism is used to drive the diaphragm cutting mechanism to move in a direction close to or away from the winding needle mechanism, the second driving mechanism is used to drive the first gluing mechanism to move in a direction close to or away from the winding needle mechanism, and the third driving mechanism is used to drive the second gluing mechanism to move in a direction close to or away from the winding needle mechanism. In this embodiment, the first driving mechanism, the second driving mechanism, and the third driving mechanism are respectively provided to control and drive the diaphragm cutting mechanism, the first gluing mechanism, and the second gluing mechanism separately, thereby improving the refinement of the diaphragm winding process of the winding device and facilitating improving the quality of the diaphragm.

[0018] A third aspect of the present application provides a diaphragm winding method, the diaphragm winding method comprising:

[0019] The second cam of the diaphragm cutting mechanism is controlled to push open the second clamping member of the needle rolling mechanism, and the first power source drives the horizontal push plate to move to push the diaphragm between the first clamping member and the second clamping member;

[0020] Controlling the suction hole to absorb the diaphragm, and controlling the cutter of the diaphragm cutting mechanism to extend and cut the diaphragm, wherein the suction hole is provided on the second clamping member;

[0021] Controlling the diaphragm cutting mechanism to withdraw, compressing the ballistic assembly to press the head of the first diaphragm, the first diaphragm being the portion of the diaphragm close to the first clamping member after the diaphragm is cut off;

[0022] Controlling the winding needle mechanism to rotate and wind the first diaphragm until the winding is completed;

[0023] The first push rod and the first cam of the needle winding mechanism are controlled to extend, and the first cam pushes the second clamping member away from the first clamping member to release the first diaphragm.

[0024] In an implementation of the third aspect of the present application, the diaphragm winding method includes:

[0025] Rotate the rotating mechanism and drive the needle winding mechanism to the finishing glue sticking station;

[0026] Controlling the first adhesive mechanism to support the first diaphragm;

[0027] The second glue sticking mechanism is controlled to push the first diaphragm toward the second needle winding mechanism, so that the first diaphragm contacts the needle winding mechanism and the first diaphragm is glued with the finishing glue.

[0028] Compared with the prior art, the beneficial effect of the needle winding mechanism provided by the embodiment of the present invention is as follows: the present invention can increase the clamping area of ​​the diaphragm head by the second clamping member and the first clamping member by arranging the second clamping member relative to the first clamping member, and by arranging a compression ballistic assembly, the pressure plate can push the second clamping member to quickly clamp the entire diaphragm head without the need for winding auxiliary time, thereby improving the production efficiency of the needle winding mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0030] Figure 1 is an overall schematic diagram of a needle winding mechanism provided by an embodiment of the present invention;

[0031] Figure 2 is a partial schematic diagram of a needle winding mechanism provided in an embodiment of the present invention;

[0032] Figure 3 is another partial schematic diagram of the needle winding mechanism provided by an embodiment of the present invention;

[0033] Figure 4 is a schematic diagram of the connection between the compression ballistic assembly and the second clamping member provided by an embodiment of the present invention;

[0034] Figure 5 is an overall schematic diagram of a winding device provided by an embodiment of the present invention;

[0035] Figure 6 is a schematic diagram of a diaphragm cutting mechanism provided by an embodiment of the present invention;

[0036] Figure 7 is another schematic diagram of a diaphragm cutting mechanism provided in an embodiment of the present invention;

[0037] Figure 8 is a schematic diagram of a winding device provided in an embodiment of the present invention (excluding a base);

[0038] Fig. 9 It is another schematic diagram of the winding device provided in an embodiment of the present invention (without the base).

[0039] Description of Figure Numbers:

[0040] Needle winding mechanism 100; needle winding body 10; first clamping member 11; second clamping member 12; first guide portion 121; second guide portion 122; third guide portion 123; compression ballistic assembly 13; pressure plate 131; guide rod 132; elastic member 133; first push rod 14; first cam 15; rotating mechanism 200; diaphragm cutting mechanism 300; first power source 31; second cam 32; second push rod 33; cutter 34; horizontal push plate 35; first gluing mechanism 410; second gluing mechanism 420; first drive mechanism 510; second drive mechanism 520; third drive mechanism 530; base 600. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] It should be noted that the terms “setting” and “connection” should be understood in a broad sense. For example, it can be directly setting or connecting, or it can be indirectly setting or connecting through a central component or a central structure.

[0043] In addition, in the embodiments of the present invention, if there are terms indicating orientation or positional relationships such as "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., they are based on the orientation or positional relationships or conventional placement states or usage states shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure, feature, device or element referred to must have a specific orientation or positional relationship, nor must it be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0044] The various specific technical features and embodiments described in the specific implementation methods can be combined in any suitable manner unless there is any contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features / embodiments in the present invention will not be described separately.

[0045] See also Figure 1 and Figure 2The first aspect of an embodiment of the present application proposes a needle winding mechanism 100, which includes a needle winding body 10, a first clamping member 11, a second clamping member 12, and a compression ballistic assembly 13. The first clamping member 11 is connected to the needle winding body 10, and the second clamping member 12 is arranged in the needle winding body 10. The second clamping member 12 is arranged opposite to the first clamping member 11. The compression ballistic assembly 13 is arranged to drive the second clamping member 12 and the first clamping member 11 to approach each other to perform a clamping action. In this embodiment, the first clamping member 11 and the second clamping member 12 are used to clamp the diaphragm.

[0046] Compared with the prior art, the needle winding mechanism 100 provided by the embodiment of the present invention has the following beneficial effects: the present invention can increase the clamping area of ​​the diaphragm head by the second clamping member 12 and the first clamping member 11 by arranging the second clamping member 12 relative to the first clamping member 11, and by arranging the compression ballistic assembly 13, it is possible to push the second clamping member 12 to quickly clamp the diaphragm head as a whole. Compared with the technical solution of the prior art that requires two inner clamping needles with a certain distance to pass through the diaphragm and requires winding auxiliary time, the technical solution of the present application can complete the clamping of the diaphragm in one time through the second clamping member 12 and the first clamping member 11, without the need for winding auxiliary time, thereby improving the production efficiency of the needle winding mechanism 100.

[0047] See also Figure 3 In an implementation of the first aspect of the present application, the needle winding mechanism 100 includes a first push rod 14, a first cam 15 and a second power source, the first push rod 14 is connected to the needle winding body 10, the second power source is used to drive the first push rod 14 to move, the first cam 15 is connected to the first push rod 14, and the first cam 15 is used to drive the second clamping member 12 and the first clamping member 11 to move away from each other. The first push rod 14 is arranged inside the needle winding body 10 and is located at the center. In this embodiment, the first push rod 14 can drive the first cam 15 to move, and the first cam 15 is used to drive the second clamping member 12 and the first clamping member 11 to move away from each other.

[0048] Specifically, the second clamping member 12 is provided with a first guide portion 121, and the first guide portion 121 includes a first guide surface, a second guide inclined surface, and a third guide surface. The positions of the first guide surface, the second guide inclined surface, and the third guide surface are gradually increased and are connected to each other in sequence. The first guide portion 121 is used to guide the first cam 15 to move in the direction away from the first clamping member 11. When the first push rod 14 pushes the first cam 15 to move from the first guide surface to the second guide inclined surface and the third guide surface, the first cam 15 passes through the first guide surface, the second guide inclined surface, and the third guide surface in sequence. Since the positions of the first guide surface, the second guide inclined surface, and the third guide surface are gradually increased, the first cam can drive the second clamping member 12 to gradually move away from the first clamping member 11, thereby realizing the release of the diaphragm and improving the diaphragm production and processing efficiency of the needle winding mechanism 100.

[0049] See also Figure 4 In an implementation of the first aspect of the present application, the compression ballistic assembly 13 includes a pressure plate 131, a guide rod 132, and an elastic member 133. The pressure plate 131 extends along the length direction of the second clamping member 12, and the guide rod 132 and the elastic member 133 are respectively connected to the pressure plate 131. Specifically, the pressure plate 131 is provided with a through hole, and the guide rod 132 and the elastic member 133 are connected to the pressure plate 131 through the through hole. The elastic member 133 is used to drive the pressure plate 131 to move, and the guide rod 132 is used to limit the moving direction of the pressure plate 131. In this embodiment, a pressure plate 131 is provided, and the pressure plate 131 extends along the length direction of the second clamping member 12, so that the pressure plate 131 and the second clamping member 12 have a larger contact area, which is conducive to the compression ballistic assembly 13 to push the second clamping member 12 to move smoothly along the direction close to the first clamping member 11; the elastic member 133 is provided to support the movement of the pressure plate 131 and the first clamping member 11 through elastic driving force, thereby achieving the clamping of the diaphragm; in this embodiment, a guide rod 132 is provided, so that the pressure plate 131 can be moved along the direction of the guide rod 132, thereby avoiding imbalance or tilting of the two ends of the pressure plate 131 during the movement, affecting the clamping effect of the diaphragm, and improving the contact stability between the pressure plate 131 and the first clamping member 11.

[0050] See also Figure 3 and Figure 4In an implementation of the first aspect of the present application, the first clamping member 11 and / or the second clamping member 12 is provided with a suction hole (not shown in the figure), and the suction hole is used to adsorb the diaphragm. As a preferred embodiment, the suction hole is arranged on the surface of the first clamping member 11, and the suction holes are distributed in a dot matrix, so as to improve the adsorption force on the diaphragm. The needle winding mechanism 100 also includes a negative pressure device, which is pneumatically connected to the suction hole. The first guide portion 121 is used to guide the first cam 15 to move in a direction away from the first clamping member 11. When the first push rod 14 pushes the first cam 15 to move from the first guide surface to the second guide inclined surface and the third guide surface, the first cam 15 can drive the second clamping member 12 to gradually move away from the first clamping member 11. The second clamping member 12 is provided with a second guide portion 122 and a third guide portion 123, and the second guide portion 122 and the third guide portion 123 are respectively arranged at both ends of the second clamping member 12. In this embodiment, the adsorption and preliminary fixation of the diaphragm are realized by setting a suction hole, and the movement of the cam is guided by setting the first guide portion 121, so that the cam can quickly drive the second clamping member 12 to move, thereby releasing the diaphragm, which is beneficial to improving the diaphragm production efficiency of the needle winding mechanism 100.

[0051] See also Figure 5 In a second aspect, the present application further proposes a winding device, comprising: a base 600, a diaphragm cutting mechanism 300, and a winding needle mechanism 100, wherein the diaphragm cutting mechanism 300 and the winding needle mechanism 100 are arranged on the base 600, and the winding needle mechanism 100 is the winding needle mechanism 100 described in any one of the above embodiments.

[0052] See also Figure 7 and Figure 6 The diaphragm cutting mechanism 300 includes a cutter 34, a first power source 31, a second push rod 33, a second cam 32, a heating tube, a cutter 34, and a horizontal push plate 35. The heating tube is used to heat the cutter 34. The first power source 31 is used to drive the cutter 34 to perform a cutting action. The second cam 32 is connected to the second push rod 33. The second cam 32 is used to drive the second clamping member 12 and the first clamping member 11 to move away from each other. Please refer to Figure 3 , Figure 4 , Figure 6 , Figure 7Specifically, the second push rod 33 is L-shaped. First, the diaphragm cutting mechanism 300 is driven to move toward the first needle winding mechanism 100a through the first driving mechanism 510. The two second cams 32 on the second push rod 33 move along the second guide portion 122 and the third guide portion 123 respectively, so that the second cam 32 drives the second clamping member 12 and the first clamping member 11 to move away from each other, and an opening allowing the diaphragm to enter is formed between the second clamping member 12 and the first clamping member 11. Then, the horizontal push plate 35 pushes the head of the diaphragm between the first clamping member 11 and the second clamping member 12 of the needle winding mechanism 100a, and at the same time, the heated cutter 34 cuts the diaphragm to cut the diaphragm.

[0053] In this embodiment, a second cam 32 is provided to drive the second clamping member 12 and the first clamping member 11 to move away from each other, thereby facilitating the cutter 34 to approach the winding needle mechanism 100 to perform the action of cutting the diaphragm, facilitating the winding equipment to cut and separate the diaphragm, and improving the production efficiency of the diaphragm winding process.

[0054] See also Figure 8 and Fig. 9 The winding device includes a rotating mechanism 200 arranged on the base 600, and the needle winding mechanism 100 includes a first needle winding mechanism 100a and a second needle winding mechanism 100b, and the first needle winding mechanism 100a and the second needle winding mechanism 100b are respectively connected to the rotating mechanism 200. Specifically, the rotating mechanism 200 includes a rotating body (not shown in the figure), a connecting block 210 and a rotating disk 220, and the rotating disk 220 can rotate relative to the base 600. The rotating body is connected to the rotating disk 220, and the connecting block 210 is sleeved on the rotating body. The first needle winding mechanism 100a and the second needle winding mechanism 100b are connected to both ends of the connecting block 210, and the rotating mechanism 200 is configured to drive the first needle winding mechanism 10a and the second needle winding mechanism 100b to rotate. This embodiment provides a first needle winding mechanism 100a and a second needle winding mechanism 100b so that when the first needle winding mechanism 100a or the second needle winding mechanism 100b is switched to another workstation, the other needle winding mechanism 100 replaces its position, thereby improving the winding efficiency of the diaphragm. The solution further improves the efficiency of the winding equipment.

[0055] Further, the winding device includes a first glue sticking mechanism 410 and a second glue sticking mechanism 420, the first glue sticking mechanism 410 and the second glue sticking mechanism 420 are arranged on the base 600, the first glue sticking mechanism 410 includes a first boss, the second glue sticking mechanism 420 includes a second boss, the first glue sticking mechanism 410 is arranged to support the diaphragm through the first boss, so as to assist the winding needle mechanism 100 in performing the glue sticking action, the second glue sticking mechanism 420 is arranged to support the diaphragm through the second boss to assist the winding needle mechanism 100 in performing the glue sticking action, the first boss includes at least two, the second boss and the first boss are both cylindrical, and the diameter of the second boss is greater than the diameter of the first boss. This embodiment improves the glue sticking efficiency of the winding device by arranging the first glue sticking mechanism 410 and the second glue sticking mechanism 420, and supporting the diaphragm through the first boss and the second boss to assist the winding needle mechanism 100 in performing the glue sticking action.

[0056] Furthermore, the winding device includes a first driving mechanism 510, a second driving mechanism 520, and a third driving mechanism 530, and the first driving mechanism 510, the second driving mechanism 520, and the third driving mechanism 530 are all arranged on the base 600, and the diaphragm cutting mechanism 300, the first gluing mechanism 410, and the second gluing mechanism 420 are respectively provided with a first sliding assembly, a second sliding assembly, and a third sliding assembly, and the first sliding assembly, the second sliding assembly, and the third sliding assembly are respectively arranged on the base 600;

[0057] The first driving mechanism 510 is used to drive the diaphragm cutting mechanism 300 to move in a direction close to or away from the winding needle mechanism 100, the second driving mechanism 520 is used to drive the first gluing mechanism 410 to move in a direction close to or away from the winding needle mechanism 100, and the third driving mechanism 530 is used to drive the second gluing mechanism 420 to move in a direction close to or away from the winding needle mechanism 100. In this embodiment, the first driving mechanism 510, the second driving mechanism 520, and the third driving mechanism 530 are respectively provided to control and drive the diaphragm cutting mechanism 300, the first gluing mechanism 410, and the second gluing mechanism 420 separately, thereby improving the refinement of the diaphragm winding process of the winding device and facilitating improving the quality of the diaphragm.

[0058] A third aspect of the present application provides a diaphragm winding method, the diaphragm winding method comprising:

[0059] The second cam 32 of the diaphragm cutting mechanism 300 is controlled to push open the second clamping member 12 of the needle winding mechanism 100, and the first power source 31 drives the horizontal push plate 35 to move and push the diaphragm between the first clamping member 11 and the second clamping member 12;

[0060] Controlling the suction hole to absorb the diaphragm, and controlling the cutter 34 of the diaphragm cutting mechanism 300 to extend and cut the diaphragm, wherein the suction hole is provided on the second clamping member 12;

[0061] Control the diaphragm cutting mechanism 300 to withdraw, compress the ballistic assembly 13 to press the head of the first diaphragm, and the first diaphragm is the part of the diaphragm that is close to the first clamping member 11 after the diaphragm is cut off;

[0062] Controlling the winding needle mechanism 100 to rotate and wind the first diaphragm until the winding is completed;

[0063] The first push rod 14 and the first cam 15 of the needle winding mechanism 100 are controlled to extend, and the first cam 15 pushes the second clamping member 12 away from the first clamping member 11 to release the first diaphragm.

[0064] Through the above scheme, the diaphragm can be quickly wound, and the production efficiency of the diaphragm winding is improved without the need for winding auxiliary time.

[0065] Further, in an implementation of the third aspect of the present application, the diaphragm winding method includes:

[0066] Rotate the rotating mechanism 200 and drive the needle winding mechanism 100 to the finishing glue sticking station;

[0067] Controlling the first adhesive mechanism 410 to support the first diaphragm;

[0068] The second glue sticking mechanism 420 is controlled to push the first diaphragm toward the needle winding mechanism 100 , so that the first diaphragm contacts the needle winding mechanism 100 and the first diaphragm is glued with the finishing glue.

[0069] After completing the above steps, the winding device is controlled to unload the battery cells on which the diaphragm winding is completed on the winding needle mechanism 100 .

[0070] It should be noted that the portion of the diaphragm close to the second clamping member 12 after being cut is the second diaphragm. After the first diaphragm is separated from the second diaphragm, the second diaphragm belongs to the diaphragm portion of the previous battery cell. Before the first winding needle mechanism 100a is transferred, the second glue application mechanism 420 pushes the second diaphragm toward the winding needle mechanism 100 at the finishing glue application station, that is, the second winding needle mechanism 100b, and then performs glue application on the second diaphragm. Then, the rotating mechanism 200 is controlled to drive the first winding needle mechanism 100a to rotate to the finishing glue application station.

[0071] Repeat the above steps until the winding of all battery cell separators is completed.

[0072] Through the above scheme, the diaphragm is pushed toward the winding needle mechanism 100 by setting the second gluing mechanism 420, so that the diaphragm contacts the winding needle mechanism 100, which is beneficial for the winding equipment to automatically complete the final glue sticking. The diaphragm is supported by setting the first gluing mechanism 410, so as to prevent the second diaphragm formed after the diaphragm is cut from falling off. The first gluing mechanism 410 helps the winding needle mechanism 100 to stick the final glue, thereby improving the diaphragm winding efficiency of the winding needle mechanism 100.

[0073] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0074] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0075] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0076] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0077] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0078] In the embodiments provided in the present application, it should be understood that the disclosed devices / robots and methods can be implemented in other ways. For example, the device / robot embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0079] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0080] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0081] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A winding device, characterized in that: include: A base, a diaphragm cutting mechanism, and a needle rolling mechanism, wherein the diaphragm cutting mechanism and the needle rolling mechanism are arranged on the base; The needle winding mechanism comprises a needle winding body, a first clamping member, a second clamping member and a compression ballistic assembly, wherein the first clamping member is connected to the needle winding body, the second clamping member is arranged in the needle winding body, the second clamping member is arranged opposite to the first clamping member, and the compression ballistic assembly is arranged to drive the second clamping member and the first clamping member to approach each other to perform a clamping action; The first clamping member and / or the second clamping member is provided with suction holes, the suction holes are distributed in a dot matrix, and the suction holes are used to adsorb the diaphragm; The compression ballistic assembly includes a pressing plate, a guide rod, and an elastic member, wherein the pressing plate extends along the length direction of the second clamping member, the guide rod and the elastic member are respectively connected to the pressing plate, the elastic member is used to drive the pressing plate to move, and the guide rod is used to limit the moving direction of the pressing plate; The needle winding mechanism further comprises a first push rod and a first cam, wherein the first push rod is connected to the needle winding body, the first cam is connected to the first push rod, and the first cam is used to drive the second clamping member and the first clamping member to move away from each other; The diaphragm cutting mechanism comprises a cutter, a first power source, a second push rod, a second cam, a heating tube, a cutter, and a horizontal push plate, wherein the heating tube is used to heat the cutter, the first power source is used to drive the cutter to perform a cutting action, the second cam is connected to the second push rod, and the second cam is used to drive the second clamping member and the first clamping member to move away from each other; The second clamping member is provided with a second guide portion and a third guide portion, and the second guide portion and the third guide portion are respectively provided at two ends of the second clamping member; The second cam is used for abutting against the second guide portion and the third guide portion to make the second clamping member and the first clamping member move away from each other.

2. The winding device according to claim 1, characterized in that The first clamping member and / or the second clamping member is provided with a suction hole, and the suction hole is used to absorb the diaphragm. The second clamping member is provided with a first guide portion, and the first guide portion is used to guide the first cam to move in a direction away from the first clamping member.

3. The winding device according to claim 1, characterized in that The winding device includes a rotating mechanism arranged on the base, and the needle winding mechanism includes a first needle winding mechanism and a second needle winding mechanism, the first needle winding mechanism and the second needle winding mechanism are respectively connected to the rotating mechanism, and the rotating mechanism is configured to drive the first needle winding mechanism and the second needle winding mechanism to rotate.

4. The winding device according to claim 1, characterized in that The winding device includes a first gluing mechanism and a second gluing mechanism, the first gluing mechanism and the second gluing mechanism are arranged on a base, the first gluing mechanism includes a first boss, the second gluing mechanism includes a second boss, the first gluing mechanism is configured to support the diaphragm through the first boss, and the second gluing mechanism is configured to push the first diaphragm toward the winding needle mechanism through the second boss to assist the winding needle mechanism in performing the gluing action.

5. The winding device according to claim 4, characterized in that The winding device comprises a first driving mechanism, a second driving mechanism and a third driving mechanism, wherein the first driving mechanism, the second driving mechanism and the third driving mechanism are all arranged on a base, and the diaphragm cutting mechanism, the first gluing mechanism and the second gluing mechanism are respectively provided with a first sliding assembly, a second sliding assembly and a third sliding assembly, wherein the first sliding assembly, the second sliding assembly and the third sliding assembly are respectively arranged on the base; The first driving mechanism is used to drive the diaphragm cutting mechanism to move in a direction close to or away from the winding needle mechanism, the second driving mechanism is used to drive the first gluing mechanism to move in a direction close to or away from the winding needle mechanism, and the third driving mechanism is used to drive the second gluing mechanism to move in a direction close to or away from the winding needle mechanism.

6. A diaphragm winding method, characterized in that: The diaphragm winding method adopts the winding device described in any one of claims 1 to 5, and the diaphragm winding method comprises: The second cam of the diaphragm cutting mechanism is controlled to push open the second clamping member of the needle rolling mechanism, and the first power source drives the horizontal push plate to move to push the diaphragm between the first clamping member and the second clamping member; Controlling the suction hole to absorb the diaphragm, and controlling the cutter of the diaphragm cutting mechanism to extend and cut the diaphragm, wherein the suction hole is provided on the second clamping member; Controlling the diaphragm cutting mechanism to exit, compressing the ballistic assembly to press the head of the first diaphragm, the first diaphragm being the portion of the diaphragm close to the first clamping member after the diaphragm is cut off; Controlling the winding needle mechanism to rotate and wind the first diaphragm until the winding is completed; The first push rod and the first cam of the needle winding mechanism are controlled to extend, and the first cam pushes the second clamping member away from the first clamping member to release the first diaphragm.

7. The diaphragm winding method according to claim 6, characterized in that: The diaphragm winding method comprises: Rotate the rotating mechanism and drive the needle winding mechanism to the finishing glue sticking station; Controlling the first adhesive mechanism to support the first diaphragm; The second glue sticking mechanism is controlled to push the first diaphragm toward the needle winding mechanism, so that the first diaphragm contacts the needle winding mechanism and the first diaphragm is glued with the finishing glue.

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