Dust removal method, dust removal device, dust removal system and battery production system

Abstract

The invention discloses a dust removal method, a dust removal device, a dust removal system and a battery production system, and the dust removal method is used for carrying out dust removal on multiple layers of tabs of an electrode assembly, and the dust removal method comprises the steps that the multiple layers of tabs are arranged in a dust collection cavity of a dust removal mechanism; a disturbance mechanism is controlled to disturb the multiple layers of tabs; a dust collection cavity of the dust removal mechanism is controlled to form negative pressure. According to the scheme, the multiple layers of tabs are arranged in the dust collection cavity of the dust removal mechanism, negative pressure is formed in the dust collection cavity to remove pollution particles, the disturbance mechanism is controlled to disturb the multiple layers of tabs, the multiple layers of tabs can shake or shake, on one hand, at least part of the pollution particles between the adjacent layers of tabs can be popped out, and on the other hand, the pollution particles can be removed; and on the other hand, the interlayer gaps between the adjacent layers of tabs can be changed, pollution particles in the interlayer gaps can be removed more conveniently after the interlayer gaps are increased, pollution particle residues in the multiple layers of tabs are reduced, the quality of the electrode assembly is improved, the stability of the electrode assembly is improved, and the service life of the electrode assembly is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of dust removal, and in particular to a dust removal method, a dust removal device, a dust removal system and a battery production system. Background Art

[0002] The battery cell includes a shell, an electrode assembly and other functional components. The electrode assembly has a plurality of stacked tabs. The plurality of tabs are pre-welded into an integral tab portion and then welded as a whole to the pole arranged on the end cover of the shell. After the plurality of tabs are welded into an integral tab portion, there will be residual metal particles and other contaminants in the tab portion. These contaminants will enter the electrode assembly when subjected to vibration or electrolyte injection impact, causing the electrode assembly to self-discharge and fail, or causing a short circuit in the electrode assembly, affecting the performance of the electrode assembly. Summary of the invention

[0003] The main purpose of the present application is to provide a dust removal method, a dust removal device, a dust removal system and a battery production system to reduce the residual pollutant particles inside the pole ear portion of the electrode assembly.

[0004] To achieve the above-mentioned purpose, the first technical solution provided in the present application is: a dust removal method for removing dust from the multi-layer pole ears of the electrode assembly, the dust removal method comprising: placing the multi-layer pole ears in the dust collecting chamber of the dust removal mechanism; controlling the disturbance mechanism to disturb the multi-layer pole ears; and controlling the dust collecting chamber of the dust removal mechanism to form a negative pressure.

[0005] The beneficial effect of the dust removal method provided in the present application is: the multi-layer pole ears are arranged in the dust collecting chamber of the dust removal mechanism, and the dust collecting chamber can cover the multi-layer pole ears therein, and the pollution particles are removed by forming a negative pressure in the dust collecting chamber, and the disturbance mechanism is controlled to disturb the multi-layer pole ears, which can cause the multi-layer pole ears to shake or sway. On the one hand, when the multi-layer pole ears shake or sway, at least part of the pollution particles between the adjacent layers of pole ears can be ejected, and on the other hand, the shaking or swaying of the multi-layer pole ears can also change the interlayer gap of the adjacent layers of pole ears. After the interlayer gap is increased, it is easier to remove the pollution particles in the interlayer gap. The dust removal device provided in the present application can be used to remove dust from the multi-layer pole ears before welding, reduce the pollution particles remaining in the interlayer gap of the multi-layer pole ears, and then reduce the pollution particles remaining inside the integrated pole ear part welded by the multi-layer pole ears, thereby improving the quality of the electrode assembly and improving the stability and service life of the electrode assembly.

[0006] In some embodiments, the step of controlling the disturbance mechanism to disturb the multi-layered pole tab includes: controlling the disturbance mechanism to strike the multi-layered pole tab at least once from one side of the multi-layered pole tab along the stacking direction of the multi-layered pole tab.

[0007] Controlling the disturbance mechanism to strike the multi-layer pole ear can have a disturbance effect on the multi-layer pole ear while reducing friction and scratches on the multi-layer pole ear.

[0008] In some embodiments, the step of controlling the disturbance mechanism to disturb the multi-layered pole tab includes: controlling the disturbance mechanism to move the multi-layered pole tab at least once from opposite sides of the multi-layered pole tab along the stacking direction of the multi-layered pole tab.

[0009] Controlling the disturbance mechanism to move the multi-layer pole ears can have a disturbance effect on the multi-layer pole ears. At the same time, the disturbance mechanism can detach the pole ears of different layers in turn, so that the pole ears of adjacent layers can be opened and closed in turn, which can expose the polluted particles sandwiched between the pole ears of adjacent layers to a greater extent, and the effect of removing the polluted particles is better.

[0010] In some embodiments, the disturbance mechanism includes a dust suction channel; the step of controlling the disturbance mechanism to disturb the multi-layer pole ear includes: generating negative pressure in the dust suction channel, and removing dust from the multi-layer pole ear through the dust suction channel.

[0011] Negative pressure is generated in the dust suction channel. Therefore, during the process of the disturbance mechanism disturbing the multi-layer pole ears, or after the disturbance mechanism disturbs the multi-layer pole ears, the polluted particles in the interlayer gaps of the multi-layer pole ears can be sucked away through the dust suction channel under the action of the negative pressure in the dust suction channel, thereby achieving dust removal for the multi-layer pole ears and further enhancing the dust removal effect for the multi-layer pole ears.

[0012] In some embodiments, the negative pressure wind speed of the dust suction channel is 1~3m / s.

[0013] Limiting the negative pressure wind speed of the dust suction channel to this range can alleviate the problem of poor absorption of polluted particles due to too low negative pressure wind speed in the dust suction channel, as well as the problem of adsorption of multi-layer pole ears and disturbance of multi-layer pole ears due to too high negative pressure wind speed in the dust suction channel.

[0014] In some embodiments, the negative pressure wind speed of the dust collecting chamber is 15-25 m / s.

[0015] Limiting the negative pressure wind speed of the dust collecting chamber to this range can alleviate the problem of poor absorption of polluted particles due to too low negative pressure wind speed in the dust collecting chamber, as well as the problem of disturbing the multi-layer pole ears due to too high negative pressure wind speed in the dust collecting chamber.

[0016] In some embodiments, the dust collecting chamber has an inlet and an air outlet; the air outlet is connected to the exhaust assembly through a pipe; wherein, the step of arranging the multi-layer pole ear in the dust collecting chamber of the dust removal mechanism includes: inserting the multi-layer pole ear into the dust collecting chamber from the inlet, and spacing the end of the multi-layer pole ear from the air outlet; wherein, along the direction from the root to the end of the multi-layer pole ear, the spacing between the end of the multi-layer pole ear and the air outlet is 5~10mm.

[0017] The exhaust component extracts the air in the dust collecting chamber through the pipe, so that a negative pressure is formed in the dust collecting chamber. The air in the dust collecting chamber together with the polluted particles are extracted from the air outlet through the pipe, and the air outside the dust collecting chamber can also enter the dust collecting chamber through the inlet. Therefore, the air in the dust collecting chamber is flowing and is in a negative pressure state, which facilitates the polluted particles in the dust collecting chamber to be extracted through the air outlet.

[0018] The multi-layer pole ear is inserted into the dust collecting chamber from the entrance, and the end of the multi-layer pole ear is spaced apart from the air outlet to reduce the interference of the air outlet on the multi-layer pole ear when it is disturbed, and the distance between the end of the multi-layer pole ear and the air outlet is limited to the range of 5~10mm, which can reduce the risk of the end of the multi-layer pole ear being easily scratched due to the small distance between the end of the multi-layer pole ear and the air outlet, and can reduce the risk of polluted particles being difficult to be discharged from the air outlet due to the large distance between the end of the multi-layer pole ear and the air outlet.

[0019] In some embodiments, the inlet and the outlet are arranged opposite to each other along the direction from the root to the end of the multi-layer pole ear; wherein the step of arranging the multi-layer pole ear in the dust collecting chamber of the dust removal mechanism includes: inserting the multi-layer pole ear from the inlet into the dust collecting chamber along the direction from the root to the end of the multi-layer pole ear.

[0020] The multi-layer pole ear is inserted into the dust collecting chamber from the inlet in the direction from the root to the end of the multi-layer pole ear. Since the inlet and the air outlet are arranged opposite to each other, after the multi-layer pole ear is inserted into the dust collecting chamber, the end of the multi-layer pole ear is just opposite to the air outlet, which is convenient for the interlayer pollution particles of the multi-layer pole ear to be extracted through the air outlet.

[0021] In some embodiments, the direction from the root to the end of the multi-layer pole ear is defined as a first direction, the stacking direction of the multi-layer pole ear is defined as a second direction, and a third direction is defined to intersect both the first direction and the second direction; along the first direction, the dust collecting chamber has a first side wall and a third side wall relative to each other; along the third direction, the dust collecting chamber has a second side wall and a fourth side wall relative to each other; the first side wall has an air outlet, the second side wall has an inlet, the fourth side wall has an outlet, and the third side wall has a avoidance opening connecting the inlet and the outlet; wherein the step of arranging the multi-layer pole ear in the dust collecting chamber of the dust removal mechanism includes: inserting the multi-layer pole ear into the dust collecting chamber from the inlet along the third direction; the dust removal method also includes: after the dust removal is completed, moving the multi-layer pole ear out of the dust collecting chamber from the outlet along the third direction.

[0022] The multi-layer pole ears are inserted into the dust collecting chamber through the inlet, and the multi-layer pole ears are moved out of the dust collecting chamber from the outlet. The multi-layer pole ears move along the third direction, which is more convenient for transporting the electrode assembly, and multiple electrode assemblies can be transported and dusted in turn along the third direction, thereby realizing the assembly line operation of multi-layer pole ear dust removal of multiple electrode assemblies.

[0023] In some embodiments, along the stacking direction of the multi-layer pole ears, the dust collecting chamber has relative top and bottom walls; the top wall has a through hole; the disturbance mechanism includes a driving member and a disturbance member, the driving member is arranged outside the dust collecting chamber, one end of the disturbance member is arranged in the dust collecting chamber, and the other end extends from the through hole to the outside of the dust collecting chamber and is connected to the driving member; wherein the driving member is used to drive the disturbance member to move, thereby disturbing the multi-layer pole ears.

[0024] The disturbance mechanism includes a driving member and a disturbance member. The driving member serves as a power source, and the disturbance member serves as an implementation member. The driving member can drive the disturbance member to move to disturb the multi-layer pole ears. Setting the driving member outside the dust collecting chamber can reduce the impact of polluted particles in the dust collecting chamber on the driving member, and also alleviate the problem that the size of the dust collecting chamber needs to be set relatively large due to the driving member being set in the dust collecting chamber. Since the multi-layer pole ears are located in the dust collecting chamber, one end of the disturbance member needs to be located in the dust collecting chamber to disturb the multi-layer pole ears in the dust collecting chamber, and the other end of the disturbance member needs to be located outside the dust collecting chamber to connect to the driving member.

[0025] In some embodiments, the disturbance member includes a disturbance block and a connecting rod. The disturbance block is arranged in the dust collecting chamber for abutting against the multi-layer pole ears. One end of the connecting rod is arranged in the dust collecting chamber and connected to the disturbance block, and the other end extends from the through hole to the outside of the dust collecting chamber and is connected to the driving member.

[0026] The disturbance block is a component that abuts the multi-layer pole ear, and the connecting rod is an intermediate connecting component that connects the disturbance block and the driving member. Driven by the driving member, the connecting rod moves together with the disturbance block. The disturbance member is set as two components, and the two components together constitute the disturbance member. The disturbance block mainly plays the role of disturbing the multi-layer pole ear, and the connecting rod mainly plays the role of connecting the disturbance block to the driving member. Therefore, the materials of the disturbance block and the connecting rod can be selected respectively to achieve a better disturbance effect of the disturbance block on the multi-layer pole ear and a more stable connection effect of the connecting rod.

[0027] In some embodiments, the disturbance block is a flexible member, or at least a surface of the disturbance block for contacting the multi-layer tab is covered with a flexible layer.

[0028] In this way, the risk of the disturbance block scratching the multi-layer tab can be reduced.

[0029] In some embodiments, the multilayer pole ear is a planar structure, and the surface of the disturbance block facing the multilayer pole ear is inclined relative to the multilayer pole ear; along the direction from the root to the end of the multilayer pole ear, the distance between the surface of the disturbance block facing the multilayer pole ear and the multilayer pole ear gradually decreases.

[0030] The surface of the disturbance block facing the multi-layer pole ear is inclined relative to the multi-layer pole ear, and can adapt to the shape of the multi-layer pole ear after bending and deformation. During the bending and deformation process of the multi-layer pole ear, the disturbance block can contact the multi-layer pole ear as much as possible through the surface of the disturbance block facing the multi-layer pole ear, thereby increasing the contact area between the disturbance block and the multi-layer pole ear and minimizing the local concave deformation defect of the multi-layer pole ear caused by the squeezing of the multi-layer pole ear by the edge of the disturbance block due to the large local stress.

[0031] In some embodiments, the angle between the surface of the disturbance block facing the multi-layer tab and the multi-layer tab is 5-45 degrees.

[0032] Limiting the angle between the surface of the disturbance block facing the multi-layer pole ear and the multi-layer pole ear within this range can reduce the problem of the edge of the disturbance block easily squeezing the multi-layer pole ear due to too small an angle, and reduce the problem of too small a contact area between the disturbance block and the multi-layer pole ear due to too large an angle.

[0033] In some embodiments, along the direction from the root to the end of the multi-layer pole ear, the surface of the disturbance block facing the multi-layer pole ear is connected to the side of the disturbance block to form two corners; wherein, the step of arranging the multi-layer pole ear in the dust collecting chamber of the dust removal mechanism also includes: making the disturbance block located between the multi-layer pole ear and the top wall; along the stacking direction of the multi-layer pole ear, the projection of one corner on the plane where the multi-layer pole ear is located is located on the multi-layer pole ear, and the projection of the other corner on the plane where the multi-layer pole ear is located is located outside the multi-layer pole ear.

[0034] When the surface of the disturbance block facing the multi-layer pole ear is inclined, along the stacking direction of the multi-layer pole ear, the projection of one corner on the plane where the multi-layer pole ear is located is located on the multi-layer pole ear, and the projection of the other corner on the plane where the multi-layer pole ear is located is located outside the multi-layer pole ear. In this way, the disturbance block contacts the multi-layer pole ear through the surface of the disturbance block facing the multi-layer pole ear, which can further reduce the risk of the corner squeezing the pole ear.

[0035] In some embodiments, at least the corners projected on the multi-layer tabs are rounded and smoothly transitioned.

[0036] The corners projected on the multi-layer tabs are set to have a smooth transition, which can reduce the risk of scratching the multi-layer tabs caused by the corners to a certain extent.

[0037] In some embodiments, along the stacking direction of the multi-layer pole lug, the ratio of the width of the projection of the surface of the disturbance block facing the multi-layer pole lug on the multi-layer pole lug to the width of the multi-layer pole lug is 1 / 3~2 / 3; wherein, the width of the projection is the dimension of the projection along the direction from the root to the end of the multi-layer pole lug, and the width of the multi-layer pole lug is the dimension of the multi-layer pole lug along the direction from the root to the end of the multi-layer pole lug.

[0038] Limiting the ratio of the width of the projection of the surface of the disturbance block toward the multi-layer pole ear on the multi-layer pole ear to the width of the multi-layer pole ear to between 1 / 3 and 2 / 3 can reduce the risk of the disturbance effect of the disturbance block on the multi-layer pole ear being unclear due to the projection width ratio being too small, and reduce the risk of inelastic deformation of the multi-layer pole ear due to an excessively large projection width ratio.

[0039] In order to achieve the above-mentioned purpose, the second technical solution provided in the present application is: a dust removal device for removing dust from the multi-layer pole ears of the electrode assembly, the dust removal device comprising a dust removal mechanism and a disturbance mechanism; the dust removal mechanism has a dust collecting chamber, the dust collecting chamber has an inlet and an air outlet, the air outlet is connected to the exhaust assembly, and the inlet is used for inserting the multi-layer pole ears into the dust collecting chamber; the disturbance mechanism is connected to the dust removal mechanism, at least part of the disturbance mechanism is arranged in the dust collecting chamber, and the disturbance mechanism is used to disturb the multi-layer pole ears located in the dust collecting chamber.

[0040] The beneficial effect of the dust removal device provided in the present application is: the multi-layer pole ears of the electrode assembly are dusted by the dust removal device, in which the dust collection chamber of the dust removal mechanism is used for the multi-layer pole ears to be inserted therein through the inlet, and the air outlet of the dust collection chamber is used to connect the exhaust assembly, so that a negative pressure is formed in the dust collection chamber, and the polluted particles inside the multi-layer pole ears are sucked, thereby removing the polluted particles inside the multi-layer pole ears, and the disturbance mechanism can disturb the multi-layer pole ears located in the dust collection chamber, thereby causing the multi-layer pole ears to shake or sway. On the one hand, when the multi-layer pole ears shake or sway, at least part of the polluted particles between the adjacent layers of pole ears can be ejected, and on the other hand, the shaking or swaying of the multi-layer pole ears can also change the interlayer gap between the adjacent layers of pole ears. After the interlayer gap is increased, it is easier to remove the polluted particles in the interlayer gap, thereby reducing the residual polluted particles inside the integrated pole ear part formed by welding the multi-layer pole ears, thereby improving the quality of the electrode assembly and improving the stability and service life of the electrode assembly.

[0041] In some embodiments, along the first direction, the dust collecting chamber has a relative first side wall and a third side wall; along the second direction, the dust collecting chamber has a relative top wall and a bottom wall; along the third direction, the dust collecting chamber has a relative second side wall and a fourth side wall; wherein the first direction, the second direction and the third direction intersect in pairs; the first side wall has an air outlet, the second side wall has an inlet, the fourth side wall has an outlet, and the third side wall has a avoidance opening connecting the inlet and the outlet; the outlet is used to move the multi-layer pole ear out of the dust collecting chamber.

[0042] The multi-layer pole ears can be inserted into the dust collecting chamber through the inlet, and the multi-layer pole ears can be moved out of the dust collecting chamber from the outlet. The multi-layer pole ears can be avoided through the avoidance opening when the multi-layer pole ears are inserted into the dust collecting chamber and the multi-layer pole ears are moved out of the dust collecting chamber, thereby reducing the interference with the multi-layer pole ears when they are inserted into the dust collecting chamber and the multi-layer pole ears are moved out of the dust collecting chamber. The multi-layer pole ears are inserted into the dust collecting chamber and the multi-layer pole ears are moved out of the dust collecting chamber along the third direction, which is more convenient for transporting the electrode assembly. Multiple electrode assemblies can be transported and dusted in sequence along the third direction, thereby realizing the assembly line operation of multi-layer pole ear dust removal of multiple electrode assemblies.

[0043] In some embodiments, along the first direction, the distance between the inlet and the first side wall is 4-9 mm, and the distance between the outlet and the first side wall is 4-9 mm.

[0044] After the multi-layer pole ear is inserted into the dust collecting chamber, a certain appropriate distance should be maintained between the end of the multi-layer pole ear and the first side wall. Since the multi-layer pole ear is inserted into the dust collecting chamber through the inlet along the third direction and moved out of the dust collecting chamber from the outlet along the third direction, the distance between the inlet and the first side wall along the first direction can be slightly smaller than the distance between the end of the multi-layer pole ear and the first side wall. Limiting the distance between the inlet and the first side wall and the distance between the outlet and the first side wall to the range of 4 to 9 mm can maintain a suitable distance between the end of the multi-layer pole ear and the first side wall, reducing the risk of the end of the multi-layer pole ear being easily scratched by the first side wall due to the small distance between the end of the multi-layer pole ear and the first side wall, and reducing the risk of polluted particles being difficult to be discharged from the air outlet due to the large distance between the end of the multi-layer pole ear and the first side wall.

[0045] In some embodiments, the disturbance mechanism has a first surface located in the dust collecting chamber and facing away from the top wall, and the first surface is inclined relative to the first direction; along the direction from the third side wall to the first side wall, the distance between the first surface and the bottom wall gradually decreases; the bottom wall is parallel to the first direction.

[0046] The first surface of the disturbance mechanism is inclined relative to the first direction. Therefore, when the multi-layer pole ear is inserted into the dust collecting chamber, the first surface of the disturbance mechanism is also inclined relative to the multi-layer pole ear. The disturbance mechanism can contact and squeeze the multi-layer pole ear through the first surface. The inclined first surface can be more adaptable to the shape of the multi-layer pole ear after bending and deformation. During the bending and deformation process of the multi-layer pole ear, the disturbance mechanism can contact the multi-layer pole ear through the first surface as much as possible, thereby increasing the contact area between the disturbance mechanism and the multi-layer pole ear and minimizing the local concave deformation defect of the multi-layer pole ear caused by the squeezing of the multi-layer pole ear by the edge of the disturbance mechanism due to the large local stress.

[0047] In some embodiments, the angle between the first surface and the bottom wall is 5 to 45 degrees.

[0048] The angle between the first surface and the bottom wall is limited within this range. When the multi-layer pole ear is inserted into the dust collecting chamber, the angle between the first surface and the multi-layer pole ear is also limited within this range. This can reduce the problem of the edge of the disturbance mechanism easily squeezing the multi-layer pole ear due to a too small angle, and reduce the problem of the contact area between the disturbance mechanism and the multi-layer pole ear being too small due to a too large angle.

[0049] In some embodiments, the disturbance mechanism further has two second surfaces connected to the first surface. Along the first direction, the first surface and the second surface are connected to form a corner, and the corner is a smooth transition.

[0050] Setting the corner to a smooth transition can reduce the risk of scratching the multi-layer tab by the corner to a certain extent.

[0051] In some embodiments, the agitation mechanism includes a dust suction channel.

[0052] The disturbance mechanism itself has a dust suction channel. During the process of the disturbance mechanism disturbing the multi-layer pole ears, or after the disturbance mechanism disturbs the multi-layer pole ears, the polluted particles in the interlayer gaps of the multi-layer pole ears can be sucked away through the dust suction channel, thereby achieving dust removal for the multi-layer pole ears and further enhancing the dust removal effect for the multi-layer pole ears.

[0053] In some embodiments, the top wall has a through hole, and the disturbance mechanism includes a driving member and a disturbing member; the driving member is arranged outside the dust collecting chamber; one end of the disturbing member is arranged in the dust collecting chamber, and the other end extends from the through hole to the outside of the dust collecting chamber and is connected to the driving member; wherein the driving member is used to drive the disturbing member to move, thereby disturbing the multi-layer pole ears.

[0054] The disturbance mechanism includes a driving member and a disturbance member. The driving member serves as a power source, and the disturbance member serves as an implementation member. The driving member can drive the disturbance member to move to disturb the multi-layer pole ears. Setting the driving member outside the dust collecting chamber can reduce the impact of polluted particles in the dust collecting chamber on the driving member, and also alleviate the problem that the size of the dust collecting chamber needs to be set relatively large due to the driving member being set in the dust collecting chamber. Since the multi-layer pole ears are located in the dust collecting chamber, one end of the disturbance member needs to be located in the dust collecting chamber to disturb the multi-layer pole ears in the dust collecting chamber, and the other end of the disturbance member needs to be located outside the dust collecting chamber to connect to the driving member.

[0055] In some embodiments, the disturbance member includes a disturbance block and a connecting rod; the disturbance block is arranged in the dust collecting chamber for abutting the multi-layer pole ears; one end of the connecting rod is arranged in the dust collecting chamber and connected to the disturbance block, and the other end extends from the through hole to the outside of the dust collecting chamber and is connected to the driving member.

[0056] The disturbance block is a component that abuts the multi-layer pole ear, and the connecting rod is an intermediate connecting component that connects the disturbance block and the driving member. Driven by the driving member, the connecting rod moves together with the disturbance block. The disturbance member is set as two components, and the two components together constitute the disturbance member. The disturbance block mainly plays the role of disturbing the multi-layer pole ear, and the connecting rod mainly plays the role of connecting the disturbance block to the driving member. Therefore, the materials of the disturbance block and the connecting rod can be selected respectively to achieve a better disturbance effect of the disturbance block on the multi-layer pole ear and a more stable connection effect of the connecting rod.

[0057] In some embodiments, the disturbance mechanism includes a dust suction channel, one end of the dust suction channel passes through the disturbance block, and the other end of the dust suction channel passes through the portion of the connecting rod located outside the dust collecting chamber.

[0058] The disturbance mechanism itself has a dust suction channel. During the process of the disturbance mechanism disturbing the multi-layer pole ears, or after the disturbance mechanism disturbs the multi-layer pole ears, the polluted particles in the interlayer gaps of the multi-layer pole ears can be sucked out of the dust collecting chamber through the dust suction channel, thereby achieving dust removal for the multi-layer pole ears and further enhancing the dust removal effect for the multi-layer pole ears.

[0059] In some embodiments, the disturbance block is a flexible member, or at least a surface of the disturbance block for contacting the multi-layer tab is covered with a flexible layer.

[0060] In this way, the risk of the disturbance block scratching the multi-layer tab can be reduced.

[0061] In order to achieve the above-mentioned purpose, the third technical solution provided in the present application is: a dust removal system, including a dust removal device, a transmission mechanism and a controller; the dust removal device adopts the dust removal device of any of the above schemes; the transmission mechanism is used to move the electrode assembly so that the multi-layer pole ears are inserted into the dust collecting chamber from the entrance; the controller is electrically connected to the dust removal mechanism and the disturbance mechanism respectively, and is used to control the disturbance mechanism to disturb the multi-layer pole ears located in the dust collecting chamber after the multi-layer pole ears are inserted into the dust collecting chamber from the entrance, and to control the dust removal mechanism to remove dust from the multi-layer pole ears.

[0062] The beneficial effect of the dust removal system provided by the present application is that the multi-layer pole ears of the electrode assembly are dusted by the dust removal device. In the dust removal device, the dust collecting chamber of the dust removal mechanism is used for the multi-layer pole ears to be inserted therein through the inlet, and the air outlet of the dust collecting chamber is used to connect the exhaust assembly, so that a negative pressure is formed in the dust collecting chamber, and the polluted particles inside the multi-layer pole ears are sucked out, so as to remove the polluted particles inside the multi-layer pole ears. The disturbance mechanism can disturb the multi-layer pole ears located in the dust collecting chamber, so that the multi-layer pole ears shake or sway. On the one hand, when the multi-layer pole ears shake or sway, at least part of the polluted particles between the adjacent layers of pole ears can be ejected, and on the other hand, On the one hand, the shaking or swaying of the multi-layer pole ears can also change the interlayer gap of the adjacent layers of pole ears. When the interlayer gap is increased, it is easier to remove the polluted particles in the interlayer gap, thereby reducing the residual polluted particles inside the pole ears formed by welding the multi-layer pole ears, thereby improving the quality of the electrode assembly, improving the stability and service life of the electrode assembly; the electrode assembly is transmitted by the transmission mechanism, which facilitates the insertion of the multi-layer pole ears of the electrode assembly into the dust collecting chamber, which is beneficial to improving the automation of the transmission of the electrode assembly; the disturbance of the multi-layer pole ears by the disturbance mechanism is controlled by the controller, and the dust removal of the multi-layer pole ears by the dust removal mechanism is controlled, which is beneficial to the control automation of the dust removal process.

[0063] In order to achieve the above-mentioned purpose, the fourth technical solution provided in the present application is: a battery production system, including a dust removal device and a welding device, the dust removal device adopts the dust removal device of any of the above schemes, the dust removal device is used to remove dust from the multi-layer pole ears of the electrode assembly, and the welding device is located downstream of the dust removal device, and is used to weld the multi-layer pole ears of the electrode assembly after dust removal by the dust removal device.

[0064] The battery production system provided by the present application removes dust from the multi-layer pole ears of the electrode assembly through a dust removal device. In the dust removal device, the dust collecting chamber of the dust removal mechanism is used for the multi-layer pole ears to be inserted therein through the inlet, and the air outlet of the dust collecting chamber is used to connect the exhaust assembly, so that a negative pressure is formed in the dust collecting chamber, and the polluted particles inside the multi-layer pole ears are sucked out, thereby removing the polluted particles inside the multi-layer pole ears. The disturbance mechanism can disturb the multi-layer pole ears located in the dust collecting chamber, so that the multi-layer pole ears are shaken or swayed. On the one hand, when the multi-layer pole ears shake or sway, at least part of the polluted particles between the adjacent layers of pole ears can be ejected. On the other hand, the shaking or swaying of the multi-layer pole ears can also change the interlayer gap between the adjacent layers of pole ears. After the interlayer gap is increased, it is easier to remove the polluted particles in the interlayer gap, thereby reducing the residual polluted particles inside the multi-layer pole ears; the welding device welds the multi-layer pole ears of the electrode assembly after the dust removal device has been used. The pole ears formed after the multi-layer pole ears of the electrode assembly are welded have fewer polluted particles remaining inside, thereby improving the quality of the electrode assembly and improving the stability and service life of the electrode assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which: Figure 1 is a schematic flow chart of a first embodiment of a dust removal method provided by the present application; Figure 2 It is a schematic diagram of the relative position relationship between the electrode assembly, the dust removal mechanism and the disturbance mechanism in the dust removal method provided by the present application; Figure 3 yes Figure 2 A schematic diagram of the positional relationship from another perspective; Figure 4 It is a schematic diagram of the process of disturbing the multi-layered tabs of the electrode assembly by the disturbance mechanism in the dust removal method provided by the present application; Figure 5 is a schematic flow chart of a second embodiment of the dust removal method provided by the present application; Figure 6 is a schematic flow chart of a third embodiment of the dust removal method provided by the present application; Figure 7 It is a schematic diagram of the coordination structure of the electrode assembly and the disturbance mechanism in the dust removal method provided in an embodiment of the present application; Figure 8 yes Figure 1 A schematic flow chart of an embodiment of step S20 in the dust removal method is shown; Fig. 9 is a schematic flow chart of a fourth embodiment of the dust removal method provided by the present application; Fig.10 is another schematic diagram of the relative positional relationship between the electrode assembly, the dust removal mechanism, and the disturbance mechanism in the dust removal method provided by the present application; Fig.11 is a schematic flow chart of a fifth embodiment of the dust removal method provided by the present application; Fig.12 is a schematic flow chart of a sixth embodiment of the dust removal method provided by the present application; Fig.13 It is a schematic diagram of the coordination structure of the electrode assembly and the transmission mechanism in the dust removal method provided in an embodiment of the present application.

[0066] Description of reference numerals: Dust removal device 100; dust removal mechanism 110; dust collecting hood 111; first side wall 111A; second side wall 111B; third side wall 111C; fourth side wall 111D; top wall 111E; bottom wall 111F; dust collecting chamber 101; inlet 102; air outlet 103; avoidance port 104; outlet 105; through hole 106; suction assembly 112; duct 113; disturbance mechanism 120; driving member 121; disturbance member 122; dust suction channel 1220; disturbance block 1221; first surface 1221A; corner 1221B; second surface 1221C; connecting rod 1222; electrode assembly 200; pole ear 210; main body 220; transmission mechanism 300; first direction X; second direction Y; third direction Z. DETAILED DESCRIPTION

[0067] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0068] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions.

[0069] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0070] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0071] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0072] In the description of the embodiments of the present application, the orientation or position relationship indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "circumferential", "height direction", "first direction", and "second direction" are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0073] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0074] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and may be direct contact or contact through an intermediate medium layer. It may be contact with essentially no interaction force between the two contacting parties, or it may be contact with interaction force between the two contacting parties.

[0075] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices can be power batteries, which are power sources for tools. Power batteries mostly refer to batteries that provide power for electric vehicles, electric trains, electric bicycles, golf carts and other transportation vehicles, as well as aerospace. Of course, battery devices can also be energy storage batteries, which refer to batteries used to store energy from renewable energy sources such as hydropower, thermal power, wind power and solar power stations. With the continuous expansion of the application fields of battery devices, the market demand is also constantly expanding.

[0076] In the related art, a battery device usually includes a battery box and multiple battery cells. The tabs and poles are key components of the battery cell, and they play an important role in current flow and current diversion. Specifically, the electrode assembly (also called a bare cell) formed by winding or laminating has multiple layers of tabs stacked together, that is, each layer of tabs is independent, and there is no connection between adjacent tabs.

[0077] For batteries with a structure without an adapter, usually, the stacked layers of pole ears are welded together by ultrasonic welding to form a plate-shaped pole ear portion, and then the welded plate-shaped pole ear portion is laser welded to the corresponding pole to achieve connection and electrical conduction with the pole.

[0078] For batteries using an adapter plate structure, usually, an adapter plate is used to transitionally connect the stacked multi-layer pole ears and the pole. Specifically, the multi-layer pole ears need to be pre-welded first to connect the multi-layer pole ears into one body to form a plate-shaped pole ear portion, and then the welded plate-shaped pole ear portion is welded to one side of the adapter plate, and then the other side of the adapter plate is welded to the pole.

[0079] Regardless of the battery structure used (with or without an adapter), the stacked multi-layer pole ears need to be pre-welded to form an integrated pole ear portion, and then the integrated pole ear portion is directly welded to the corresponding pole column or welded to the corresponding pole column through an adapter. Before the multi-layer pole ears are welded into an integrated pole ear portion, due to process dust pollution during the slitting and winding processes (such as foil cutting dust pollution, cross-roller contamination, etc.), metal and other contamination particles will remain between adjacent layers of pole ears. After the multi-layer pole ears are welded to form an integrated pole ear portion, these contamination particles remain inside the pole ear portion, and will enter the electrode assembly when subjected to vibration or electrolyte injection impact, causing self-discharge failure inside the electrode assembly, or causing a short circuit in the battery, affecting the performance of the battery.

[0080] Based on the above considerations, in order to reduce the residual contamination particles inside the pole ear part of the electrode assembly, the embodiment of the present application provides a dust removal method for removing dust from the multi-layer pole ear of the electrode assembly, and the dust removal method includes: arranging the multi-layer pole ear in the dust collecting chamber of the dust removal mechanism; controlling the disturbance mechanism to disturb the multi-layer pole ear; and controlling the dust collecting chamber of the dust removal mechanism to form a negative pressure. The multi-layer pole ear is arranged in the dust collecting chamber of the dust removal mechanism, and the dust collecting chamber can cover the multi-layer pole ear therein. The removal of contamination particles is achieved by forming a negative pressure in the dust collecting chamber. The disturbance mechanism is controlled to disturb the multi-layer pole ear, which can cause the multi-layer pole ear to shake, vibrate or shake. When the multi-layer pole ear shakes, vibrates or shakes, the contamination particles between the adjacent layers of the pole ear can be ejected, so that the interlayer particle residue of the multi-layer pole ear can be reduced, and then the contamination particle residue inside the pole ear part formed by welding the multi-layer pole ear can be reduced, thereby improving the quality of the electrode assembly and improving the stability and service life of the electrode assembly.

[0081] The dust removal method disclosed in the embodiment of the present application can be used, but not limited to, in the production of battery devices, and the produced battery devices can be used in electrical devices such as vehicles, ships or aircraft. The battery devices produced after being treated by the dust removal method disclosed in the embodiment of the present application can be used to form a power supply system of the electrical device, which is conducive to improving the quality of the battery device, and improving the stability of the battery device and the battery life.

[0082] The electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0083] In a battery device, there may be multiple battery cells, which may be connected in series, in parallel, or in a mixed connection. A mixed connection means that multiple battery cells are connected in series and in parallel. Multiple battery cells may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells is accommodated in a box; of course, the battery device may also be a battery module formed by connecting multiple battery cells in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in a box. The battery device may also include other structures, for example, the battery device may also include a busbar component for realizing electrical connection between multiple battery cells.

[0084] Each battery cell may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell may be cylindrical, flat, rectangular, or in other shapes.

[0085] A battery cell is the smallest unit that makes up a battery device. A battery cell may include a housing, an electrode assembly, and other functional components, wherein the housing includes an end cap and a shell.

[0086] The end cap refers to a component that covers the opening of the shell to isolate the internal environment of the battery cell from the external environment. Without limitation, the shape of the end cap can be adapted to the shape of the shell to match the shell. Optionally, the end cap can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap is not easily deformed when squeezed and collided, so that the battery cell can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals can be provided on the end cap. The electrode terminal can be used to electrically connect to the electrode assembly for outputting or inputting electrical energy of the battery cell. In some embodiments, the electrode terminal may include a pole. The pole may include a positive pole and a negative pole for outputting current and connecting to an external circuit. In some embodiments, the end cap may also be provided with an explosion-proof part for releasing the internal pressure when the internal pressure or temperature of the battery cell reaches a threshold. The material of the end cap can also be a variety of materials, such as the material of the end cap including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating member may be provided inside the end cap, and the insulating member may be used to isolate the electrical connection components in the housing from the end cap to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0087] The shell is a component used to cooperate with the end cap to form the internal environment of the battery cell, wherein the formed internal environment can be used to accommodate the electrode assembly, electrolyte and other components. The shell and the end cap can be independent components, and an opening can be set on the shell, and the internal environment of the battery cell is formed by covering the opening with the end cap at the opening. Without limitation, the end cap and the shell can also be integrated. Specifically, the end cap and the shell can form a common connection surface before other components are put into the shell, and when the interior of the shell needs to be encapsulated, the end cap is covered with the shell. The shell can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell can be determined according to the specific shape and size of the electrode assembly. The material of the shell can be various, for example, the material of the shell includes but is not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0088] The electrode assembly is the part where the electrochemical reaction occurs in the battery cell. One or more electrode assemblies may be contained in the housing. The electrode assembly is mainly formed by winding or stacking the positive electrode sheet and the negative electrode sheet, and usually an isolation member is provided between the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active materials constitute the main body of the electrode assembly, and the parts of the positive electrode sheet and the negative electrode sheet without active materials each constitute the tab. The positive electrode tab and the negative electrode tab may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs connect the electrode terminals to form a current loop.

[0089] The dust removal method provided in the embodiment of the present application is used to remove dust from the multi-layer tabs of the electrode assembly, which can reduce the residual contamination particles in the interlayer gaps of the multi-layer tabs, thereby improving the quality of the electrode assembly and improving the stability and service life of the electrode assembly. The following is a specific description of the principle of how the dust removal method provided by the present application reduces the residual contamination particles in the interlayer gaps of the multi-layer tabs in combination with the accompanying drawings.

[0090] The present application provides a dust removal method for removing dust from the multi-layer tabs of an electrode assembly. Figure 1 , Figure 1 1 is a flow chart of a first embodiment of a dust removal method provided by the present application. Specifically, the dust removal method may include the following steps: Step S10: placing the multi-layer tabs in the dust collecting chamber of the dust removal mechanism.

[0091] by Figure 2 and Figure 3 The relative positional relationship between the electrode assembly 200 and the dust removal mechanism 110 is specifically described.

[0092] The electrode assembly 200 generally includes a main body 220 and a stacked multi-layered tab 210. The main body 220 may be in a variety of shapes, such as a square, a cylindrical, a hexagonal prism, etc. The embodiment of the present application is described by taking the main body 220 as a square. Generally speaking, the square main body 220 has a thickness direction, and the multi-layered tabs 210 are stacked along the thickness direction of the main body 220, that is, the stacking direction of the multi-layered tabs 210 is the thickness direction of the main body 220.

[0093] The tabs 210 may be in sheet form, each layer of tabs 210 is independent, adjacent layers of tabs 210 are not connected, and there is a gap between adjacent layers of tabs 210, which can also be referred to as the interlayer gap of the multilayer tabs 210. The multilayer tabs 210 as a whole generally constitute a plate-like structure with a certain thickness.

[0094] The multi-layer tabs 210 of the electrode assembly 200 may be contaminated by process dust (such as foil cutting dust pollution, roller cross contamination, etc.) during the slitting and winding process, and the contaminated particles may remain in the interlayer gaps of the multi-layer tabs 210 .

[0095] The dust removal mechanism 110 is used to remove polluted particles. For example, a vacuum component can be used to form a negative pressure in the dust collecting chamber 101 of the dust removal mechanism 110. Under the action of the negative pressure, the polluted particles can be sucked from the dust collecting chamber 101 of the dust removal mechanism 110 to the outside of the dust collecting chamber 101.

[0096] The dust collecting chamber 101 of the dust removal mechanism 110 is used to cover the multi-layer pole ears 210 therein, so as to collect polluted particles. At the same time, the dust collecting chamber 101 is used to surround the multi-layer pole ears 210 in a smaller space, so as to better form a negative pressure environment in the smaller space, thereby making it easier for polluted particles to be sucked away.

[0097] Exemplarily, the dust removal mechanism 110 includes a dust collecting hood 111 , in which the dust collecting chamber 101 is formed. The dust collecting hood 111 may be a shell structure, and the dust collecting chamber 101 is defined by the inner wall of the shell structure.

[0098] Step S20: controlling the disturbance mechanism to disturb the multi-layer tabs.

[0099] Continue with Figure 2 and Figure 3 The cooperation structure between the multi-layer pole ear 210 and the disturbance mechanism 120 is specifically described.

[0100] The meaning of disturbing the multi-layer pole ear 210 is that the disturbance mechanism 120 applies a certain force to the multi-layer pole ear 210 and then removes the force or changes the direction of the force, and the multi-layer pole ear 210 is disturbed under the force, causing the multi-layer pole ear 210 to shake, vibrate or shake, and the original state of the multi-layer pole ear 210 is changed, so that at least a part of the contamination particles in the interlayer gap of the multi-layer pole ear 210 are ejected out of the multi-layer pole ear 210 as the multi-layer pole ear 210 shakes, vibrates or shakes, and when the multi-layer pole ear 210 shakes, vibrates or shakes, the size of the interlayer gap of the multi-layer pole ear 210 also changes.

[0101] According to the connection state of the multi-layer pole ear 210 on the main body 220, it can be known that the multi-layer pole ear 210 is actually a plurality of stacked cantilever structures relative to the main body 220, and the multi-layer pole ear 210 is made of metal materials such as copper and aluminum, which has a certain elastic deformation ability. Therefore, when the multi-layer pole ear 210 is disturbed, the multi-layer pole ear 210 can shake, vibrate or shake relative to the main body 220.

[0102] In short, disturbing the multi-layer tab 210 is actually to make the multi-layer tab 210 in a non-stationary state such as shaking, vibrating or shaking, which can be defined as the disturbed state of the multi-layer tab 210. The opposite of the disturbed state is the stationary state of the multi-layer tab 210. That is, the disturbance process of the multi-layer tab 210 is actually the process in which the multi-layer tab 210 is in a non-stationary state such as shaking or shaking.

[0103] When the multi-layer pole tabs 210 are in a disturbed state, since the contaminant particles in the interlayer gaps are sandwiched between the pole tabs 210 of adjacent layers, as the multi-layer pole tabs 210 shake, vibrate or sway, the contaminant particles sandwiched between the pole tabs 210 of adjacent layers are subjected to repeated friction and compression, which can cause the contaminant particles to move relative to the pole tabs 210. Therefore, as the multi-layer pole tabs shake or vibrate, the contaminant particles gradually move from between the pole tabs 210 of adjacent layers to the outside of the multi-layer pole tabs 210. The process of contaminant particles moving from between the pole tabs 210 of adjacent layers to the outside of the multi-layer pole tabs 210 can be defined as the ejection of contaminant particles.

[0104] It can be understood that in the method of the embodiment of the present application, the multi-layer pole ear 210 is disturbed by the disturbance mechanism 120, and the disturbance mechanism 120 can adopt various forms to achieve the disturbance of the multi-layer pole ear 210. For example, the disturbance mechanism 120 can directly make physical contact with the multi-layer pole ear 210 to directly apply force to the multi-layer pole ear 210. The disturbance mechanism 120 may also not make physical contact with the multi-layer pole ear 210, but indirectly act on the multi-layer pole ear 210 through energy forms such as sound waves, so that the multi-layer pole ear 210 is disturbed.

[0105] Continue with Figure 2 and Figure 3 The disturbance mechanism 120 is illustrated by way of example. The disturbance mechanism 120 is a component for disturbing the multi-layer pole tab 210. At least a portion of the disturbance mechanism 120 can disturb the multi-layer pole tab 210 through two-dimensional motion or three-dimensional motion. Exemplarily, at least a portion of the disturbance mechanism 120 is disposed in the dust collecting chamber 101 so as to disturb the multi-layer pole tab 210 in the dust collecting chamber 101. Of course, the method of the embodiment of the present application does not exclude the situation where the disturbance mechanism 120 is located outside the dust collecting chamber 101, and the multi-layer pole tab 210 in the dust collecting chamber 101 is disturbed by moving the disturbance mechanism 120 from outside the dust collecting chamber 101 to inside the dust collecting chamber 101.

[0106] See also Figure 4 , Figure 4 FIG. 1 shows a schematic diagram of a disturbance process of the multi-layer tab 210 by the disturbance mechanism 120. It should be noted that: Figure 4 It is only a schematic diagram of the disturbance mechanism 120 disturbing the multi-layered tab 210, and is intended to illustrate the general process of the tab 210 being disturbed, and is not intended to limit the specific form of the multi-layered tab 210 being disturbed. Specifically, Figure 4In the figure, before the disturbance mechanism 120 disturbs the multi-layer pole ear 210, the disturbance mechanism 120 and the multi-layer pole ear 210 are in a state of being separated from each other. The disturbance mechanism 120 moves close to the multi-layer pole ear 210 and squeezes the multi-layer pole ear 210, so that the multi-layer pole ear 210 is deformed. The disturbance mechanism 120 then moves away from the multi-layer pole ear 210 to remove the squeezing of the multi-layer pole ear 210, and the multi-layer pole ear 210 recovers the deformation and generates shaking, vibration or shaking until the multi-layer pole ear 210 gradually stops moving. This process is the general disturbance process of the multi-layer pole ear 210.

[0107] Step S30: controlling the dust collecting chamber of the dust removal mechanism to form a negative pressure.

[0108] The dust collecting chamber 101 forms a negative pressure, which can form a pressure difference between the inside of the dust collecting chamber 101 and the outside of the dust collecting chamber 101. Under the effect of the pressure difference, the polluted particles inside the dust collecting chamber 101 are taken away.

[0109] It can be seen that the dust removal method provided in the embodiment of the present application arranges the multi-layer pole ear 210 in the dust collecting chamber 101 of the dust removal mechanism 110, and the dust collecting chamber 101 can cover the multi-layer pole ear 210 therein, and the removal of polluted particles is achieved by forming a negative pressure in the dust collecting chamber 101, and the disturbance mechanism 120 is controlled to disturb the multi-layer pole ear 210, which can cause the multi-layer pole ear 210 to shake, vibrate or shake. On the one hand, when the multi-layer pole ear 210 shakes, vibrates or shakes, at least part of the polluted particles between the adjacent layers of the pole ears 210 can be ejected. On the other hand, the shaking, vibration or shaking of the multi-layer pole ear 210 can also change the interlayer gap between the adjacent layers of the pole ears 210. After the interlayer gap is increased, it is easier to remove the polluted particles in the interlayer gap.

[0110] It should be noted that step S30 can be performed before step S20, or during step S20, or simultaneously with step S20. That is, the dust collecting chamber 101 of the dust removal mechanism 110 can be controlled to form a negative pressure first, and when the dust collecting chamber 101 is in a negative pressure state, the disturbance mechanism 120 can be controlled to disturb the pole tab 210; the dust collecting chamber 101 of the dust removal mechanism 110 can also be controlled to form a negative pressure during the disturbance mechanism 120 disturbing the pole tab 210; or the dust collecting chamber 101 of the dust removal mechanism 110 can be controlled to form a negative pressure while the disturbance mechanism 120 disturbs the pole tab 210. It can be understood that the embodiment of the present application is to better remove the pollutant particles in the interlayer gap of the multi-layer pole tab 210 during the disturbance process of the multi-layer pole tab 210, so it is necessary to keep the dust collecting chamber 101 of the dust removal mechanism 110 in a negative pressure state during the disturbance process of the multi-layer pole tab 210, so step S30 is at least performed during step S20.

[0111] It should be further explained that, in the embodiment method of the present application, the disturbance mechanism 120 is used to disturb the multi-layer pole ear 210, and the dust removal mechanism 110 is used to form a negative pressure through the dust collecting chamber 101 to remove dust from the multi-layer pole ear 210. The disturbance mechanism 120 and the dust removal mechanism 110 can be two independent structures without a connection relationship, or the disturbance mechanism 120 and the dust removal mechanism 110 can be two structures with a connection relationship, and one of the disturbance mechanism 120 and the dust removal mechanism 110 can serve as an installation support component for the other.

[0112] See also Figure 5 , Figure 5 1 is a flow chart of a second embodiment of the dust removal method provided by the present application. Specifically, the dust removal method may include the following steps: Step S10: placing the multi-layer tabs in the dust collecting chamber of the dust removal mechanism.

[0113] Step S210A: along the stacking direction of the multi-layer electrode tab, control the disturbance mechanism to strike the multi-layer electrode tab at least once from one side of the multi-layer electrode tab.

[0114] Step S30: controlling the dust collecting chamber of the dust removal mechanism to form a negative pressure.

[0115] Among them, step S10 and step S30 are the same as those in the above-mentioned embodiment and will not be described in detail here.

[0116] Among them, step S210A is to Figure 1 The method shown is a specific refinement of step S20 . In the embodiment of the present application, step S210A is used to illustrate how the disturbance mechanism 120 disturbs the multi-layer tab 210 .

[0117] The meaning of controlling the disturbance mechanism 120 to knock the multilayer pole tab 210 at least once from one side of the multilayer pole tab 210 is that the disturbance mechanism 120 moves on one side of the multilayer pole tab 210 and acts on the multilayer pole tab 210. For example, along the stacking direction of the multilayer pole tab 210, the disturbance mechanism 120 first moves close to the multilayer pole tab 210, contacts with the multilayer and applies force to the multilayer pole tab 210, and then moves away from the multilayer pole tab 210. This process is defined as knocking once, so that the multilayer pole tab 210 is disturbed. The disturbance mechanism 120 can knock once or repeatedly knock multiple times to further enhance the disturbance effect on the multilayer pole tab 210, thereby enhancing the dust removal effect on the polluted particles in the interlayer gap of the multilayer pole tab 210.

[0118] The disturbance mechanism 120 striking the multi-layered pole tab 210 can cause the multi-layered pole tab 210 to have multiple disturbance states: for example, the multi-layered pole tab 210 can be in a small amplitude repeated shaking or vibration state, or in a large amplitude repeated shaking state. The amplitude of the shaking or swaying of the multi-layer pole ear 210 is related to the amplitude of the deformation of the multi-layer pole ear 210 caused by the disturbance mechanism 120 acting on the multi-layer pole ear 210. For example, when the disturbance mechanism 120 squeezes the multi-layer pole ear 210, the end of the multi-layer pole ear 210 moves a first distance. After the disturbance mechanism 120 removes the squeezing of the multi-layer pole ear 210, the multi-layer pole ear 210 recovers the deformation and repeatedly shakes with a small amplitude; when the disturbance mechanism 120 squeezes the multi-layer pole ear 210, the end of the multi-layer pole ear 210 moves a second distance, and the second distance is greater than the first distance, after the disturbance mechanism 120 removes the squeezing of the multi-layer pole ear 210, the multi-layer pole ear 210 recovers the deformation and repeatedly shakes with a large amplitude.

[0119] Among them, the end of the pole ear 210 refers to the end of the pole ear 210 away from the main body 220 (also called the free end of the pole ear 210). Correspondingly, the pole ear 210 also has a root, and the root of the pole ear 210 refers to the end where the pole ear 210 is connected to the main body 220.

[0120] The specific principle of the disturbance mechanism 120 striking the multi-layered pole tab 210 from one side of the multi-layered pole tab 210 so as to put the multi-layered pole tab 210 in a disturbance state is analyzed as follows: by Figure 4 The disturbance process of the multi-layer tab 210 shown is taken as an example for specific description.

[0121] The disturbance mechanism 120 may first move along the first motion trajectory close to the multi-layered pole tab 210 until the disturbance mechanism 120 abuts against the multi-layered pole tab 210 and squeezes the multi-layered pole tab 210, so that the multi-layered pole tab 210 undergoes elastic bending deformation, and then the disturbance mechanism 120 moves away from the multi-layered pole tab 210 along the second motion trajectory to withdraw the squeezing of the multi-layered pole tab 210. After the multi-layered pole tab 210 loses the squeezing effect of the disturbance mechanism 120, the multi-layered pole tab 210 will recover its deformation. At the same time, since the multi-layered pole tab 210 is a plurality of sheet-like cantilever structures, the multi-layered pole tab 210 will not immediately change from a bent state to a straight state, but will repeatedly shake. After the free end of the pole tab 210 shakes multiple times, the shaking amplitude gradually decreases until the pole tab 210 is stationary. That is, the whole process of the multi-layered pole tab 210 from the beginning of deformation to the gradual recovery of stillness is the disturbance state of the pole tab 210. Exemplarily, the first motion trajectory is parallel to the stacking direction of the multi-layer pole lug 210 or has a component parallel to the stacking direction of the multi-layer pole lug 210, and along the first motion trajectory, the disturbance mechanism 120 moves from a position separated from the multi-layer pole lug 210 to a position where the multi-layer pole lug 210 is squeezed; the second motion trajectory may also be parallel to the stacking direction of the multi-layer pole lug 210 or have a component parallel to the stacking direction of the multi-layer pole lug 210, and along the second motion trajectory, the disturbance mechanism 120 moves from a position where the multi-layer pole lug 210 is squeezed to a position separated from the multi-layer pole lug 210.

[0122] It can be understood that the first motion trajectory and the second motion trajectory can be multiple. The first motion trajectory can be any one as long as it can realize the disturbance mechanism 120 squeezing the multi-layer pole ear 210 so that the multi-layer pole ear 210 produces elastic deformation. Similarly, the second motion trajectory can be any one as long as the squeezing of the multi-layer pole ear 210 is withdrawn when the disturbance mechanism 120 squeezes the multi-layer pole ear 210 so that the multi-layer pole ear 210 recovers its elastic deformation.

[0123] The method of the embodiment of the present application uses a disturbance mechanism 120 to tap the multi-layer pole ear 210 from one side of the multi-layer pole ear 210 to achieve disturbance of the multi-layer pole ear 210 , which can not only disturb the multi-layer pole ear 210 , but also reduce friction and scratches on the multi-layer pole ear 210 .

[0124] It should be noted that, since the speed at which the multi-layer pole ear 210 recovers its elastic deformation is relatively fast, the speed at which the disturbance mechanism 120 is withdrawn should be greater than or equal to the speed at which the multi-layer pole ear 210 recovers its elastic deformation, so as to reduce the influence of the disturbance mechanism 120 on the recovery of the elastic deformation of the multi-layer pole ear 210 during the withdrawal of the disturbance mechanism 120, that is, to reduce the interference of the jitter of the multi-layer pole ear 210 when the disturbance mechanism 120 is withdrawn, and try to make the multi-layer pole ear 210 in a free state when jittering occurs during the recovery of the elastic deformation without additional force applied to the multi-layer pole ear 210.

[0125] Furthermore, in order to reduce the risk of causing the multi-layer pole ear 210 to undergo inelastic bending deformation (irreversible deformation) when the disturbance mechanism 120 squeezes the multi-layer pole ear 210, the amount of bending deformation produced by the multi-layer pole ear 210 when the disturbance mechanism 120 squeezes the multi-layer pole ear 210 should be no greater than the limit deformation of the elastic bending of the multi-layer pole ear 210, so that the multi-layer pole ear 210 can still be in a straight state after recovering from the deformation, thereby facilitating the maintenance of stable performance of the multi-layer pole ear 210.

[0126] Exemplarily, when the pole tab 210 is made of copper, the limit deformation of the elastic bending of the multi-layer pole tab 210 is set to a first limit deformation, then the disturbance mechanism 120 extrude the multi-layer pole tab 210 so that the bending deformation of the multi-layer pole tab 210 should not be greater than the first limit deformation; when the pole tab 210 is made of aluminum, the limit deformation of the elastic bending of the multi-layer pole tab 210 is set to a second limit deformation, then the disturbance mechanism 120 extrude the multi-layer pole tab 210 so that the bending deformation of the multi-layer pole tab 210 should not be greater than the second limit deformation.

[0127] See also Figure 6 , Figure 6 1 is a flow chart of a third embodiment of the dust removal method provided by the present application. Specifically, the dust removal method may include the following steps: Step S10: placing the multi-layer tabs in the dust collecting chamber of the dust removal mechanism.

[0128] Step S210B: along the stacking direction of the multi-layer tab, control the disturbance mechanism to move the multi-layer tab at least once from opposite sides of the multi-layer tab.

[0129] Step S30: controlling the dust collecting chamber of the dust removal mechanism to form a negative pressure.

[0130] Among them, step S10 and step S30 are the same as those in the above-mentioned embodiment and will not be described in detail here.

[0131] Among them, step S210B is to Figure 1 The specific refinement of step S20 in the method shown, the embodiment of the present application illustrates how the disturbance mechanism 120 disturbs the multi-layer tab 210 through step S210B.

[0132] The meaning of the disturbance mechanism 120 at least once moving the multilayer pole tab 210 from opposite sides of the multilayer pole tab 210 is that the disturbance mechanism 120 moves from one side of the multilayer pole tab 210 close to the multilayer pole tab 210 and acts on the multilayer pole tab 210, contacts the multilayer pole tab 210 and applies a force to the multilayer pole tab 210, and the disturbance mechanism 120 continues to move until it is separated from the multilayer pole tab 210 and reaches the other side of the multilayer pole tab 210. This process is defined as one movement, thereby disturbing the multilayer pole tab 210. The disturbance mechanism 120 can be moved once, or it can be repeatedly moved multiple times (moving back and forth) to further enhance the disturbance effect on the multilayer pole tab 210, thereby enhancing the dust removal effect on the polluted particles in the interlayer gap of the multilayer pole tab 210.

[0133] The specific principle of the disturbance mechanism 120 moving the multi-layered pole tab 210 at least once from both sides of the multi-layered pole tab 210 so as to put the multi-layered pole tab 210 in a disturbance state is analyzed as follows: The disturbance mechanism 120 can move along the third motion trajectory close to the multi-layer pole ear 210 until the disturbance mechanism 120 abuts against the multi-layer pole ear 210 and squeezes the multi-layer pole ear 210, causing the multi-layer pole ear 210 to undergo elastic bending deformation. The disturbance mechanism 120 continues to move along the third motion trajectory, causing the disturbance mechanism 120 to gradually separate from the multi-layer pole ear 210, and the part of the disturbance mechanism 120 used to squeeze the multi-layer pole ear 210 reaches the other side of the multi-layer pole ear 210. This process is defined as one flick.

[0134] It can be understood that in this manner, the part where the disturbance mechanism 120 abuts against the multi-layered pole tab 210 should be as close as possible to the end of the pole tab 210 so that the disturbance mechanism 120 can be smoothly separated from the multi-layered pole tab 210 after the multi-layered pole tab 210 is elastically bent and deformed.

[0135] It can be understood that the process of the disturbance mechanism 120 gradually separating from the multi-layered pole lug 210 is that the disturbance mechanism 120 sequentially separates from the pole lugs 210 of different layers. Compared with the method of knocking the multi-layered pole lug 210, the method of toggling the multi-layered pole lug 210 is adopted. In the process of the disturbance mechanism 120 sequentially separating from the pole lugs 210 of different layers, the pole lugs 210 of adjacent layers are opened and closed in turn, which can expose the pollutant particles sandwiched between the pole lugs 210 of adjacent layers to a greater extent, and the effect of removing pollutant particles will be better. However, in the process of the disturbance mechanism 120 gradually separating from the multi-layered pole lug 210 by toggling, the risk of friction or scratching the end of the multi-layered pole lug 210 may also be greater than the knocking method.

[0136] Similar to the method of tapping the multi-layer pole ear 210, the third motion trajectory in the embodiment method of the present application can also be parallel to the stacking direction of the multi-layer pole ear 210 or have a component parallel to the stacking direction of the multi-layer pole ear 210, as long as the disturbance mechanism 120 can squeeze the multi-layer pole ear 210 so that the multi-layer pole ear 210 produces elastic bending deformation, and try not to interfere with or interfere less with the shaking of the multi-layer pole ear 210 after the disturbance mechanism 120 is separated from the multi-layer pole ear 210.

[0137] It should be noted that step S210A and step S210B are two different implementations of step S20 controlling the disturbance mechanism 120 to disturb the multi-layered pole tab 210. Generally speaking, step S210A and step S210B are difficult to be performed simultaneously. Step S20 can be performed by selecting one of step S210A and step S210B, or both can be performed sequentially or alternately. And step S20 is not limited to these two implementations, and can also be other implementations. For example, the disturbance mechanism 120 can move close to the multi-layered pole tab 210 along the stacking direction of the multi-layered pole tab 210. After squeezing the multi-layered pole tab 210 so that the multi-layered pole tab 210 produces elastic bending deformation, the disturbance mechanism 120 moves in a direction perpendicular to the stacking direction of the multi-layered pole tab 210 (that is, toward the side of the multi-layered pole tab 210), so that the disturbance mechanism 120 withdraws the squeezing of the multi-layered pole tab 210.

[0138] See also Figure 7 , Figure 7 1 is a schematic diagram of the coordination structure of the electrode assembly and the disturbance mechanism in the dust removal method provided in an embodiment of the present application. In some embodiments, the disturbance mechanism 120 includes a dust suction channel 1220. As an example, the dust suction channel 1220 has two opposite ends, one end is an air inlet end, and the other end is an air outlet end. The air inlet end and the air outlet end of the dust suction channel 1220 respectively pass through the opposite ends of the disturbance mechanism 120, the air inlet end is connected to the dust collecting chamber 101, and the air outlet end is connected to the external space of the dust collecting chamber 101. Figure 7 (a) to (c) show various different situations of the dust suction channel 1220 of the disturbance mechanism 120 ( Figure 7 The dotted boxes in (a) to (c) represent the dust collecting chamber 101).

[0139] See also Figure 8 , Figure 8 yes Figure 1 The flowchart of step S20 in the dust removal method of an embodiment is shown. Specifically, step S20 of the method of this embodiment includes: Step S220: generating negative pressure in the dust suction channel to remove dust from the multi-layer tabs through the dust suction channel.

[0140] Negative pressure is generated in the dust suction channel 1220. Therefore, during the process of the disturbance mechanism 120 disturbing the multi-layer pole ear 210, or after the disturbance mechanism 120 disturbs the multi-layer pole ear 210, the polluted particles in the interlayer gaps of the multi-layer pole ear 210 can be sucked away through the dust suction channel 1220 under the action of the negative pressure in the dust suction channel 1220, thereby achieving dust removal of the multi-layer pole ear 210.

[0141] The method of the embodiment of the present application can remove dust from the multi-layered pole tab 210 by generating negative pressure through the disturbance mechanism 120 itself. Under the premise of removing dust from the multi-layered pole tab 210 through the negative pressure in the dust collecting chamber 101 of the dust removal mechanism 110, the disturbance mechanism 120 itself can also play a certain dust removal effect, further enhancing the dust removal effect on the multi-layered pole tab 210. It can be understood that in the method of this embodiment, the disturbance mechanism 120 itself can generate negative pressure to remove dust from the multi-layered pole tab 210. In other embodiments, the disturbance mechanism 120 itself may not remove dust from the multi-layered pole tab 210, but only play the role of disturbing the multi-layered pole tab 210.

[0142] It should be noted that step S220 can be performed before step S210A or step S210B, or during step S210A or step S210B. That is, negative pressure can be generated in the dust suction channel 1220 first, and the dust suction channel 1220 is in a negative pressure state, and then the disturbance mechanism 120 is controlled to knock the multi-layered pole tab 210 at least once from one side of the multi-layered pole tab 210, or to move the multi-layered pole tab 210 at least once from the opposite sides of the multi-layered pole tab 210, so that the multi-layered pole tab 210 is in a disturbed state; or the disturbance mechanism 120 can be controlled to knock the multi-layered pole tab 210 at least once from one side of the multi-layered pole tab 210, or to move the multi-layered pole tab 210 back and forth from the opposite sides of the multi-layered pole tab 210, so that the multi-layered pole tab 210 is in a disturbed state, and then negative pressure can be generated in the dust suction channel 1220, and the dust suction channel 1220 is in a negative pressure state. It can be understood that the method of the embodiment of the present application is used to remove dust from the multi-layer pole ear 210 in a disturbed state, which makes it easier to remove the polluted particles in the interlayer gaps of the multi-layer pole ear 210. Therefore, it is necessary to make the dust suction channel 1220 in a negative pressure state when the multi-layer pole ear 210 is in a disturbed state, that is, step S220 is performed at least during step S210A or step S210B.

[0143] In some embodiments, in step S220, the negative pressure wind speed of the dust suction channel 1220 is 1-3 m / s. For example, the negative pressure wind speed of the dust suction channel 1220 can be 1 m / s, or 2 m / s, or 3 m / s.

[0144] The negative pressure wind speed of the dust suction channel 1220 is limited within this range, which can alleviate the problem of poor absorption of polluted particles due to too low negative pressure wind speed of the dust suction channel 1220, and the problem of adsorption of the multi-layer pole ear 210 due to too high negative pressure wind speed of the dust suction channel 1220, thereby affecting the disturbance of the multi-layer pole ear 210.

[0145] Furthermore, the negative pressure wind speed of the dust suction channel 1220 can be preferably 1-2 m / s. Further limiting the negative pressure wind speed of the dust suction channel 1220 within this preferred range can achieve a better negative pressure suction effect on polluted particles while having little impact on the disturbance state of the multi-layer tab 210.

[0146] In some embodiments, in step S10, the negative pressure wind speed of the dust collecting chamber 101 is 15-25 m / s. For example, the negative pressure wind speed of the dust collecting chamber 101 can be 15 m / s, or 18 m / s, or 20 m / s, or 22 m / s, or 25 m / s.

[0147] Limiting the negative pressure wind speed of the dust collecting chamber 101 within this range can alleviate the problem of poor absorption of polluted particles due to too low negative pressure wind speed in the dust collecting chamber 101, as well as the problem of disturbing the multi-layer pole ear 210 due to too high negative pressure wind speed in the dust collecting chamber 101.

[0148] Moreover, the negative pressure wind speed of the dust suction channel 1220 is lower than the negative pressure wind speed of the dust collecting chamber 101, that is, low-pressure wind speed is used in the dust suction channel 1220 to remove dust from the multi-layer pole ears 210. The reason is that since the disturbance mechanism 120 is used to disturb the multi-layer pole ears 210, the disturbance mechanism 120 will contact the multi-layer pole ears 210 or be closer to the multi-layer pole ears 210. If a larger negative pressure wind speed is used in the dust suction channel 1220, it will form an adsorption effect on the multi-layer pole ears 210 to a certain extent, thereby affecting the amplitude or frequency of the shaking, vibration or shaking of the multi-layer pole ears 210, and then affecting the ejection of polluted particles in the interlayer gaps of the multi-layer pole ears 210. Therefore, low-pressure wind speed is used in the dust suction channel 1220 to remove dust from the multi-layer pole ears 210.

[0149] Furthermore, the negative pressure wind speed of the dust collecting chamber 101 can be preferably 20-25 m / s. Further limiting the negative pressure wind speed of the dust collecting chamber 101 within this preferred range can achieve a better negative pressure absorption effect on the polluted particles while having little impact on the disturbance state of the multi-layer tab 210.

[0150] See again Figures 2 to 4 The dust collecting chamber 101 has an inlet 102 and an air outlet 103; the air outlet 103 is connected to the air extraction assembly 112 through a pipe 113. The inlet 102 is used for inserting the multi-layer tab 210 into the dust collecting chamber 101.

[0151] The exhaust component 112 can be a component such as a negative pressure pump or an exhaust fan that can achieve negative pressure suction. The exhaust component 112 extracts the air in the dust collecting chamber 101 from the dust collecting chamber 101 through the pipe 113, and the dust collecting chamber 101 forms a negative pressure. The air in the dust collecting chamber 101 together with the polluted particles can be extracted from the air outlet 103 through the pipe 113, and because the inlet 102 is connected to the dust collecting chamber 101, the air outside the dust collecting chamber 101 can also enter the dust collecting chamber 101 through the inlet 102, so the air in the dust collecting chamber 101 is flowing and is in a negative pressure state.

[0152] The relative positions of the inlet 102 and the air outlet 103 can be various, for example, the inlet 102 and the air outlet 103 can be arranged relative to each other, or they can be arranged not relative to each other. Exemplarily, the dust collecting chamber 101 has a plurality of walls, and the inlet 102 and the air outlet 103 can be arranged on two opposite walls of the dust collecting chamber 101, or they can be arranged on two adjacent walls of the dust collecting chamber 101.

[0153] See also Fig. 9 , Fig. 9 1 is a flow chart of a fourth embodiment of the dust removal method provided by the present application. Specifically, the dust removal method may include the following steps: Step S110: insert the multi-layer pole ear into the dust collecting chamber from the inlet, and space the end of the multi-layer pole ear from the air outlet; wherein, along the direction from the root to the end of the multi-layer pole ear, the distance between the end of the multi-layer pole ear and the air outlet is 5-10 mm.

[0154] Step S20: controlling the disturbance mechanism to disturb the multi-layer tabs.

[0155] Step S30: controlling the dust collecting chamber of the dust removal mechanism to form a negative pressure.

[0156] Among them, step S20 and step S30 are the same as the above-mentioned embodiment and will not be described in detail here.

[0157] Among them, step S110 is to Figure 1 The method shown is a specific refinement of step S10. The embodiment of the present application uses step S110 to illustrate how the multi-layer pole tabs 210 are disposed in the dust collecting chamber 101 of the dust removal mechanism 110.

[0158] In the method of this embodiment, after the multi-layer pole tab 210 is inserted into the dust collecting chamber 101 from the inlet 102 , the end of the multi-layer pole tab 210 is spaced apart from the air outlet 103 , which can reduce the interference of the air outlet 103 on the multi-layer pole tab 210 when it is disturbed.

[0159] In this embodiment, the distance between the end of the multi-layer pole ear 210 and the air outlet 103 is limited to within the range of 5 to 10 mm, which can reduce the risk of the end of the multi-layer pole ear 210 being easily scratched due to the small distance between the end of the multi-layer pole ear 210 and the air outlet 103, and can reduce the risk of polluted particles being difficult to be discharged from the air outlet 103 due to the large distance between the end of the multi-layer pole ear 210 and the air outlet 103.

[0160] Exemplarily, the distance between the end of the multi-layer pole tab 210 and the air outlet 103 is 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 10 mm.

[0161] Further, the distance between the end of the multi-layer tab 210 and the air outlet 103 is 6-8 mm. Exemplarily, the distance between the end of the multi-layer tab 210 and the air outlet 103 is 6 mm, 7 mm or 8 mm.

[0162] The above-mentioned distance between the end of the multilayer pole tab 210 and the air outlet 103 means: the straight-line distance between the end of the multilayer pole tab 210 and the air outlet 103. Exemplarily, when the end of the multilayer pole tab 210 is arranged opposite to the air outlet 103, the line between the end of the multilayer pole tab 210 and the air outlet 103 is parallel to the direction from the root to the end of the multilayer pole tab 210; when the end of the multilayer pole tab 210 is not arranged opposite to the air outlet 103, for example, when the inlet 102 is arranged on a side wall of the dust collecting hood 111, and the air outlet 103 is arranged on the bottom wall of the dust collecting hood 111, after the multilayer pole tab 210 is inserted into the dust collecting chamber 101 through the inlet 102, the line between the end of the multilayer pole tab 210 and the air outlet 103 is intersecting with the direction from the root to the end of the multilayer pole tab 210.

[0163] In some embodiments, see Fig.10 , Fig.10 Another schematic diagram of the relative position relationship between the electrode assembly, the dust removal mechanism and the disturbance mechanism in the dust removal method provided by the present application. Along the direction from the root to the end of the multi-layer electrode tab 210, the inlet 102 and the air outlet 103 are arranged opposite to each other.

[0164] See also Fig.11 , Fig.11 1 is a flow chart of a fifth embodiment of the dust removal method provided by the present application. Specifically, the dust removal method may include the following steps: Step S110A: inserting the multi-layer electrode tab into the dust collecting chamber from the inlet along the direction from the root to the end of the multi-layer electrode tab.

[0165] Step S20: controlling the disturbance mechanism to disturb the multi-layer tabs.

[0166] Step S30: controlling the dust collecting chamber of the dust removal mechanism to form a negative pressure.

[0167] Among them, step S20 and step S30 are the same as the above-mentioned embodiment and will not be described in detail here.

[0168] Among them, step S110A is to Fig. 9 The specific refinement of step S110 in the dust removal method shown, the embodiment of the present application uses step S110A to explain in detail how the multi-layer tab 210 is inserted into the dust collecting chamber 101 from the inlet 102.

[0169] In the method of the embodiment of the present application, the multi-layer pole ear 210 is inserted into the dust collecting chamber 101 from the inlet 102 in the direction from the root to the end of the multi-layer pole ear 210. Since the inlet 102 is arranged opposite to the air outlet 103, after the multi-layer pole ear 210 is inserted into the dust collecting chamber 101, the end of the multi-layer pole ear 210 is just opposite to the air outlet 103, which facilitates the interlayer contamination particles of the multi-layer pole ear 210 to be extracted through the air outlet 103.

[0170] In some embodiments, refer again to Figures 2 to 4 , the direction from the root to the end of the multilayer tab 210 is defined as the first direction X, the stacking direction of the multilayer tab 210 is defined as the second direction Y, and the third direction Z is defined to intersect with both the first direction X and the second direction Y. Exemplarily, the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0171] Along the first direction X, the dust collecting chamber 101 has a first side wall 111A and a third side wall 111C opposite to each other; along the third direction Z, the dust collecting chamber 101 has a second side wall 111B and a fourth side wall 111D opposite to each other.

[0172] The first side wall 111A has an air outlet 103 , the second side wall 111B has an inlet 102 , the fourth side wall 111D has an outlet 105 , and the third side wall 111C has an escape opening 104 connecting the inlet 102 and the outlet 105 .

[0173] See also Fig.12 , Fig.12 1 is a flow chart of the sixth embodiment of the dust removal method provided by the present application. Specifically, the dust removal method may include the following steps: Step S110B: inserting the multi-layer tabs into the dust collecting chamber from the entrance along the third direction.

[0174] Step S20: controlling the disturbance mechanism to disturb the multi-layer tabs.

[0175] Step S30: controlling the dust collecting chamber of the dust removal mechanism to form a negative pressure.

[0176] Among them, step S20 and step S30 are the same as the above-mentioned embodiment and will not be described in detail here.

[0177] Among them, step S110B is to Fig. 9 The specific refinement of step 110 in the dust removal method shown, the embodiment of the present application elaborates in detail how the multi-layer tab 210 is inserted into the dust collecting chamber 101 from the inlet 102 through step S110B.

[0178] Along the third direction Z, the multi-layer pole tab 210 gradually passes through the inlet 102 and is inserted into the dust collecting chamber 101 . During the insertion of the multi-layer pole tab 210 into the dust collecting chamber 101 , the avoidance opening 104 avoids the multi-layer pole tab 210 to reduce interference with the multi-layer pole tab 210 .

[0179] The dust removal method of the embodiment of the present application also includes: Step S40: After the dust removal is completed, the multi-layer tabs are moved out of the dust collecting chamber from the outlet along the third direction.

[0180] In step S40, after dust removal is completed, the multi-layer electrode tab 210 is moved out of the dust collecting chamber 101 from the outlet 105, so that the multi-layer electrode tab 210 of the next electrode assembly 200 can be inserted into the dust collecting chamber 101 for dust removal.

[0181] Furthermore, the multi-layer tabs 210 are inserted into the dust collecting chamber 101 through the inlet 102, and the multi-layer tabs 210 are moved out of the dust collecting chamber 101 from the outlet 105. The multi-layer tabs 210 move along the third direction Z, which facilitates the transmission of the electrode assembly 200. For example, the electrode assembly 200 can be placed on a transmission mechanism (such as a conveyor belt) for transmission.

[0182] See also Fig.13 , Fig.13 The diagram is a schematic diagram of the coordination structure of the electrode assembly and the transmission mechanism in the dust removal method provided in the embodiment of the present application. The electrode assembly 200 is placed on the transmission mechanism 300 for transmission, and the transmission mechanism 300 performs linear transmission on the electrode assembly 200, and the transmission direction of the transmission mechanism 300 is the third direction Z.

[0183] In addition, multiple electrode assemblies 200 can be placed on the conveying mechanism 300 at intervals along the conveying direction of the conveying mechanism 300, and the multi-layer pole ears 210 of each electrode assembly 200 enter the dust collecting chamber 101 in turn for dust removal of the multi-layer pole ears 210 and then move out of the dust collecting chamber 101, thereby realizing the assembly line operation of dust removal of the multi-layer pole ears 210 of multiple electrode assemblies 200.

[0184] It can be understood that the electrode assembly 200 is placed on the transmission mechanism 300 for transmission. Since the multi-layered pole tabs 210 of the electrode assembly 200 need to be squeezed by the disturbance mechanism 120 so that the multi-layered pole tabs 210 are elastically bent, the main body 220 of the electrode assembly 200 should be in a fixed state on the transmission mechanism 300 to maintain a relatively fixed state between the main body 220 of the electrode assembly 200 and the dust collecting cover 111. Exemplarily, a fixing member for fixing the main body 220 of the electrode assembly 200 can be provided on the transmission mechanism 300, so that the main body 220 of the electrode assembly 200 is fixed at the fixing member, and the multi-layered pole tabs 210 of the electrode assembly 200 can be disturbed by the disturbance mechanism 120.

[0185] It should be noted that step S110A and step S110B are two different implementations of inserting the multi-layer tab 210 into the dust collecting chamber 101 in step S110, and step S110 may be implemented by selecting either step S110A or step S110B.

[0186] In some embodiments, refer again to Figures 2 to 4 Along the stacking direction of the multi-layer pole ear 210, the dust collecting chamber 101 has a relative top wall 111E and a bottom wall 111F, the top wall 111E has a through hole 106, the disturbance mechanism 120 includes a driving member 121 and a disturbance member 122, the driving member 121 is arranged outside the dust collecting chamber 101, one end of the disturbance member 122 is arranged in the dust collecting chamber 101, and the other end extends from the through hole 106 to the outside of the dust collecting chamber 101 and is connected to the driving member 121; wherein the driving member 121 is used to drive the disturbance member 122 to move, thereby disturbing the multi-layer pole ear 210.

[0187] Among them, the disturbance mechanism 120 includes a driving member 121 and a disturbance member 122. The driving member 121 serves as a power source, and the disturbance member 122 serves as an implementation member. The driving member 121 can drive the disturbance member 122 to move to disturb the multi-layer pole ear 210. The driving member 121 is arranged outside the dust collecting chamber 101, which can reduce the impact of pollutant particles in the dust collecting chamber 101 on the driving member 121, and also alleviate the problem that the size of the dust collecting chamber 101 needs to be set relatively large due to the driving member 121 being arranged in the dust collecting chamber 101. Since the multi-layer pole ear 210 is located in the dust collecting chamber 101, one end of the disturbance member 122 needs to be located in the dust collecting chamber 101 to disturb the multi-layer pole ear 210 in the dust collecting chamber 101, and the other end of the disturbance member 122 needs to be located outside the dust collecting chamber 101 to connect with the driving member 121.

[0188] The driving member 121 may include but is not limited to a cylinder, a hydraulic cylinder, a motor, a ball screw and other types of driving members 121. The method of the embodiment of the present application does not limit the specific structure of the driving member 121, as long as the disturbance member 122 can be driven so that the disturbance member 122 can abut and squeeze the multi-layer pole ear 210 when it moves.

[0189] In some embodiments, the disturbance member 122 includes a disturbance block 1221 and a connecting rod 1222. The disturbance block 1221 is disposed in the dust collecting chamber 101 and is used to abut the multi-layer pole ear 210. One end of the connecting rod 1222 is disposed in the dust collecting chamber 101 and is connected to the disturbance block 1221, and the other end extends from the through hole 106 to the outside of the dust collecting chamber 101 and is connected to the driving member 121.

[0190] Among them, the disturbance block 1221 is used as a component abutting the multi-layer pole ear 210, and the connecting rod 1222 is used as an intermediate connecting member connecting the disturbance block 1221 and the driving member 121. Driven by the driving member 121, the connecting rod 1222 moves together with the disturbance block 1221, and the disturbance member 122 is set as two components, and the two components together constitute the disturbance member 122, wherein the disturbance block 1221 mainly plays the role of disturbing the multi-layer pole ear 210, and the connecting rod 1222 mainly plays the role of connecting the disturbance block 1221 to the driving member 121. Therefore, the materials of the disturbance block 1221 and the connecting rod 1222 can be selected respectively to achieve a better disturbance effect of the disturbance block 1221 on the multi-layer pole ear 210 and a more stable connection effect of the connecting rod 1222. For example, the material of the disturbance block 1221 can be set to a softer material, and the material of the connecting rod 1222 can be set to a harder material.

[0191] The disturbance block 1221 and the connecting rod 1222 may be rigidly connected, and there is no relative movement between the two. Therefore, when the driving member 121 drives the connecting rod 1222 to move, the disturbance block 1221 may also be driven to move.

[0192] In some embodiments, the disturbance block 1221 is a flexible member, or at least the surface of the disturbance block 1221 for contacting the multi-layer tab 210 is coated with a flexible layer. In this way, the risk of the disturbance block 1221 scratching the multi-layer tab 210 can be reduced.

[0193] When the disturbance block 1221 is a flexible part, that is, the overall material of the disturbance block 1221 is a flexible material, the manufacturing method of the disturbance block 1221 is simpler; when the disturbance block 1221 is at least used to abut the surface of the multi-layer pole ear 210 and is coated with a flexible layer, a harder material can be used inside the flexible layer to achieve better disturbance of the multi-layer pole ear 210 by the disturbance block 1221.

[0194] In some embodiments, the multi-layer pole tab 210 is a planar structure, and the surface of the disturbance block 1221 facing the multi-layer pole tab 210 is inclined relative to the multi-layer pole tab 210; along the direction from the root to the end of the multi-layer pole tab 210, the distance between the surface of the disturbance block 1221 facing the multi-layer pole tab 210 and the multi-layer pole tab 210 gradually decreases.

[0195] The surface of the disturbance block 1221 facing the multi-layer pole ear 210 can be defined as the first surface 1221A, and the first surface 1221A is inclined relative to the multi-layer pole ear 210, and can adapt to the shape of the multi-layer pole ear 210 after bending and deformation. During the bending and deformation process of the multi-layer pole ear 210, the disturbance block 1221 can contact the multi-layer pole ear 210 through the first surface 1221A as much as possible, thereby increasing the contact area between the disturbance block 1221 and the multi-layer pole ear 210, and minimizing the squeezing of the multi-layer pole ear 210 by the edge of the disturbance block 1221, which causes the multi-layer pole ear 210 to have a local concave deformation defect due to the large local stress. In particular, for the pole ear 210 made of softer materials such as copper, the squeezing of the multi-layer pole ear 210 by the edge of the disturbance block 1221 should be minimized.

[0196] In some embodiments, the angle between the surface of the disturbance block 1221 facing the multi-layer tab 210 and the multi-layer tab 210 is 5 to 45 degrees. Exemplarily, the angle between the surface of the disturbance block 1221 facing the multi-layer tab 210 and the multi-layer tab 210 is 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees or 45 degrees.

[0197] That is, the angle between the first surface 1221A and the multi-layer pole ear 210 is 5 to 45 degrees. By limiting the angle between the surface of the disturbance block 1221 facing the multi-layer pole ear 210 and the multi-layer pole ear 210 within this range, the problem of the edge of the disturbance block 1221 easily squeezing the multi-layer pole ear 210 due to too small an angle and the problem of too small a contact area between the disturbance block 1221 and the multi-layer pole ear 210 due to too large an angle can be reduced.

[0198] Further, the angle between the surface of the disturbance block 1221 facing the multi-layer tab 210 and the multi-layer tab 210 is 20 to 40 degrees. Exemplarily, the angle between the surface of the disturbance block 1221 facing the multi-layer tab 210 and the multi-layer tab 210 is 20 degrees, 25 degrees, 30 degrees, 35 degrees or 40 degrees.

[0199] Furthermore, the angle between the surface of the disturbance block 1221 facing the multi-layer tab 210 and the multi-layer tab 210 is 20 to 30 degrees. Exemplarily, the angle between the surface of the disturbance block 1221 facing the multi-layer tab 210 and the multi-layer tab 210 is 20 degrees, 25 degrees or 30 degrees.

[0200] In some embodiments, along the direction from the root to the end of the multi-layer tab 210 , the surface of the disturbance block 1221 facing the multi-layer tab 210 is connected to the side surface of the disturbance block 1221 to form two corners 1221B.

[0201] The side surface of the disturbance block 1221 can be defined as a second surface 1221C, that is, along the direction from the root to the end of the multi-layer tab 210, the first surface 1221A of the disturbance block 1221 is connected to the two second surfaces 1221C to form two corners 1221B.

[0202] Wherein, step S10 further includes: The disturbance block is located between the multi-layer lug and the top wall; along the stacking direction of the multi-layer lug, the projection of one corner on the plane where the multi-layer lug is located is located on the multi-layer lug, and the projection of another corner on the plane where the multi-layer lug is located is located outside the multi-layer lug.

[0203] This step is to Fig. 9 The further definition of step S110 shown is that, in step S110, the multi-layer pole tab 210 is inserted into the dust collecting chamber 101 from the inlet 102, and the end of the multi-layer pole tab 210 is spaced from the air outlet 103, and the disturbance block 1221 is located between the multi-layer pole tab 210 and the top wall 111E. Along the stacking direction of the multi-layer pole tab 210, the projection of one corner 1221B on the plane where the multi-layer pole tab 210 is located is located on the multi-layer pole tab 210, and the projection of another corner 1221B on the plane where the multi-layer pole tab 210 is located is located outside the multi-layer pole tab 210. In this way, the disturbance block 1221 is in contact with the multi-layer pole tab 210 through the first surface 1221A, which can further reduce the risk of the corner 1221B squeezing the multi-layer pole tab 210.

[0204] In some embodiments, at least the corner 1221B projected on the multi-layer tab 210 is smoothly transitioned.

[0205] The corner 1221B projected on the multi-layer tab 210 may still have a risk of scratching the multi-layer tab 210 to a certain extent. Setting the corner 1221B to a smooth transition can reduce the risk of scratching the multi-layer tab 210 by the corner 1221B to a certain extent.

[0206] See again Figure 7 One end of the dust suction channel 1220 passes through the disturbance block 1221, and the other end passes through the portion of the connecting rod 1222 located outside the dust collecting chamber 101. Polluted particles in the dust collecting chamber 101 can enter through the dust suction channel 1220 in the disturbance block 1221, and be discharged from the dust collecting chamber 101 through the dust suction channel 1220 in the connecting rod 1222.

[0207] Figure 7(a) to (c) show different positions of the dust suction channel 1220 passing through the disturbance block 1221, wherein: Figure 7 (a) shows that the dust suction channel 1220 passes through the disturbance block 1221 at the corner 1221B. Figure 7 (b) shows that the dust suction channel 1220 passes through the disturbance block 1221 at the first surface 1221A. Figure 7 (c) shows that the position where the dust suction channel 1220 passes through the disturbance block 1221 is the second surface 1221C.

[0208] It can be understood that in the embodiment of the present application, the dust suction channel 1220 passes through the disturbance block 1221 for negative pressure suction of polluted particles in the dust collecting chamber 101, and the position where the dust suction channel 1220 passes through the disturbance block 1221 can also be other situations. For example, it can simultaneously pass through the first surface 1221A, the corner 1221B and the second surface 1221C to increase the suction effect on the polluted particles.

[0209] In some embodiments, along the stacking direction of the multi-layer pole lug 210, the ratio of the width of the projection of the surface of the disturbance block 1221 facing the multi-layer pole lug 210 on the multi-layer pole lug 210 to the width of the multi-layer pole lug 210 is 1 / 3~2 / 3; wherein, the width of the projection is the dimension of the projection along the direction from the root to the end of the multi-layer pole lug 210, and the width of the multi-layer pole lug 210 is the dimension of the multi-layer pole lug 210 along the direction from the root to the end of the multi-layer pole lug 210.

[0210] By limiting the ratio of the width of the projection of the surface of the disturbance block 1221 toward the multi-layer pole lug 210 on the multi-layer pole lug 210 to the width of the multi-layer pole lug 210 to between 1 / 3 and 2 / 3, the risk of the disturbance block 1221 having an unclear disturbance effect on the multi-layer pole lug 210 due to a too small projection width ratio can be reduced, as well as the risk of the multi-layer pole lug 210 having inelastic deformation due to a too large projection width ratio can be reduced.

[0211] The present application also provides a dust removal device for removing dust from the multi-layer tabs 210 of the electrode assembly 200. Figures 2 to 4 The dust removal device 100 includes a dust removal mechanism 110 and a disturbance mechanism 120; the dust removal mechanism 110 has a dust collecting chamber 101, the dust collecting chamber 101 has an inlet 102 and an air outlet 103, the air outlet 103 is connected to the exhaust component 112, and the inlet 102 is used for inserting the multi-layer pole ear 210 into the dust collecting chamber 101; the disturbance mechanism 120 is connected to the dust removal mechanism 110, at least part of the disturbance mechanism 120 is arranged in the dust collecting chamber 101, and the disturbance mechanism 120 is used to disturb the multi-layer pole ear 210 located in the dust collecting chamber 101.

[0212] It can be seen that the dust removal device 100 provided in the embodiment of the present application can remove dust from the multi-layer pole ear 210 of the electrode assembly 200. In the dust removal device 100, the dust collecting chamber 101 of the dust removal mechanism 110 is used for the multi-layer pole ear 210 to be inserted therein through the inlet 102, and the air outlet 103 of the dust collecting chamber 101 is used to connect the exhaust assembly 112, so that a negative pressure is formed in the dust collecting chamber 101, and the polluted particles inside the multi-layer pole ear 210 are sucked, so as to remove the polluted particles inside the multi-layer pole ear 210. The disturbance mechanism 120 can disturb the multi-layer pole ear 210 located in the dust collecting chamber 101, so that the multi-layer pole ear 210 When jittering or shaking occurs, on the one hand, when the multi-layer pole ear 210 shakes or shakes, at least part of the contamination particles between adjacent layers of pole ears 210 can be ejected. On the other hand, the jittering or shaking of the multi-layer pole ear 210 can also change the interlayer gap between adjacent layers of pole ears 210. When the interlayer gap increases, it is easier to remove the contamination particles in the interlayer gap. The dust removal device 100 provided in the embodiment of the present application can reduce the interlayer contamination particle residue of the multi-layer pole ear 210, and further reduce the contamination particle residue inside the integrated pole ear part welded by the multi-layer pole ear 210, thereby improving the quality of the electrode assembly 200, and improving the stability and service life of the electrode assembly 200.

[0213] The meaning and specific method of disturbing the multi-layer tab 210 are explained in detail in the above text and will not be repeated here.

[0214] In some embodiments, along the first direction X, the dust collecting chamber 101 has a first side wall 111A and a third side wall 111C relative to each other; along the second direction Y, the dust collecting chamber 101 has a top wall 111E and a bottom wall 111F relative to each other; along the third direction Z, the dust collecting chamber 101 has a second side wall 111B and a fourth side wall 111D relative to each other; wherein the first direction X, the second direction Y and the third direction Z intersect in pairs; the first side wall 111A has an air outlet 103, the second side wall 111B has an inlet 102, the fourth side wall 111D has an outlet 105, and the third side wall 111C has an avoidance opening 104 connecting the inlet 102 and the outlet 105; the outlet 105 is used for the multi-layer pole ear 210 to move out of the dust collecting chamber 101.

[0215] Along the third direction Z, the multi-layer pole tab 210 gradually passes through the inlet 102 and is inserted into the dust collecting chamber 101 . During the process of inserting the multi-layer pole tab 210 into the dust collecting chamber 101 , the avoidance opening 104 can avoid the multi-layer pole tab 210 to reduce interference with the multi-layer pole tab 210 .

[0216] After dust removal is completed, the multi-layer electrode tab 210 is moved out of the dust collecting chamber 101 from the outlet 105, so that the multi-layer electrode tab 210 of the next electrode assembly 200 can be inserted into the dust collecting chamber 101 for dust removal.

[0217] After the multi-layer pole ear 210 is inserted into the dust collecting chamber 101 through the inlet 102 , along the direction from the root to the end of the multi-layer pole ear 210 , the end of the multi-layer pole ear 210 is just opposite to the air outlet 103 , so that the interlayer contamination particles of the multi-layer pole ear 210 are conveniently sucked away through the air outlet 103 .

[0218] The root of the tab 210 refers to the end where the tab 210 is connected to the main body 220 , and the end of the tab 210 refers to the end of the tab 210 away from the main body 220 (also referred to as the free end of the tab 210 ).

[0219] In addition, the multi-layer tab 210 is inserted into the dust collecting chamber 101 through the inlet 102, and the multi-layer tab 210 is moved out of the dust collecting chamber 101 from the outlet 105. The multi-layer tab 210 moves along the third direction Z, which is convenient for transporting the electrode assembly 200. Exemplarily, the electrode assembly 200 can be placed on a transport mechanism (such as a conveyor belt) for transport.

[0220] The electrode assembly 200 is placed on the transmission mechanism 300 for transmission. The transmission mechanism 300 transmits the electrode assembly 200 in a straight line. The transmission direction of the transmission mechanism 300 is the third direction Z.

[0221] In addition, multiple electrode assemblies 200 can be placed on the conveying mechanism 300 at intervals along the conveying direction of the conveying mechanism 300, and the multi-layer pole ears 210 of each electrode assembly 200 enter the dust collecting chamber 101 in turn for dust removal of the multi-layer pole ears 210 and then move out of the dust collecting chamber 101, thereby realizing the assembly line operation of dust removal of the multi-layer pole ears 210 of multiple electrode assemblies 200.

[0222] It can be understood that the electrode assembly 200 is placed on the transmission mechanism 300 for transmission. Since the multi-layered pole tabs 210 of the electrode assembly 200 need to be squeezed by the disturbance mechanism 120 so that the multi-layered pole tabs 210 are elastically bent, the main body 220 of the electrode assembly 200 should be in a fixed state on the transmission mechanism 300 to maintain a relatively fixed state between the main body 220 of the electrode assembly 200 and the dust collecting cover 111. Exemplarily, a fixing member for fixing the main body 220 of the electrode assembly 200 can be provided on the transmission mechanism 300, so that the main body 220 of the electrode assembly 200 is fixed at the fixing member, and the multi-layered pole tabs 210 of the electrode assembly 200 can be disturbed by the disturbance mechanism 120.

[0223] In some embodiments, along the first direction X, the distance between the inlet 102 and the first side wall 111A is 4 to 9 mm, and the distance between the outlet 105 and the first side wall 111A is 4 to 9 mm. After the multi-layer tab 210 is inserted into the dust collecting chamber 101, a certain appropriate spacing should be maintained between the end of the multi-layer tab 210 and the first side wall 111A. Since the multi-layer tab 210 is inserted into the dust collecting chamber 101 through the inlet 102 along the third direction Z, and is moved out of the dust collecting chamber 101 from the outlet 105 along the third direction Z, the distance between the inlet 102 and the first side wall 111A along the first direction X can be slightly smaller than the distance between the end of the multi-layer tab 210 and the first side wall 111A. The distance, as well as the distance between the outlet 105 and the first side wall 111A are limited to the range of 4 to 9 mm, which can maintain a suitable distance between the end of the multi-layer pole ear 210 and the first side wall 111A, reduce the risk of the end of the multi-layer pole ear 210 being easily scratched by the first side wall 111A due to the small distance between the end of the multi-layer pole ear 210 and the first side wall 111A, and reduce the risk of polluted particles being difficult to be discharged from the air outlet 103 due to the large distance between the end of the multi-layer pole ear 210 and the first side wall 111A.

[0224] Exemplarily, after the multi-layer pole tab 210 is inserted into the dust collecting chamber 101 through the inlet 102 along the third direction Z, the distance between the end of the multi-layer pole tab 210 and the air outlet 103 can be 5-10 mm along the direction from the root to the end of the multi-layer pole tab 210.

[0225] In this embodiment, the multi-layer pole tab 210 is inserted into the dust collecting chamber 101 from the inlet 102 , and the end of the multi-layer pole tab 210 is spaced apart from the air outlet 103 , which can reduce the interference of the air outlet 103 on the multi-layer pole tab 210 when it is disturbed.

[0226] In this embodiment, the distance between the inlet 102 and the first side wall 111A, and the distance between the outlet 105 and the first side wall 111A are limited to the range of 4 to 9 mm, so that the spacing between the end of the multi-layer pole ear 210 and the air outlet 103 can be roughly limited to the range of 5 to 10 mm, which can reduce the risk of the end of the multi-layer pole ear 210 being easily scratched due to the small spacing between the end of the multi-layer pole ear 210 and the air outlet 103, and can reduce the risk of polluted particles being difficult to be discharged from the air outlet 103 due to the large spacing between the end of the multi-layer pole ear 210 and the air outlet 103.

[0227] Illustratively, along the first direction X, the distance between the inlet 102 and the first side wall 111A is 4 mm, 5 mm, 6 mm, 7 mm, 8 mm or 9 mm, and the distance between the outlet 105 and the first side wall 111A is 4 mm, 5 mm, 6 mm, 7 mm, 8 mm or 9 mm.

[0228] Further, along the first direction X, the distance between the inlet 102 and the first side wall 111A is 5-7 mm, and the distance between the outlet 105 and the first side wall 111A is 5-7 mm. Exemplarily, along the first direction X, the distance between the inlet 102 and the first side wall 111A is 5 mm, 6 mm, or 7 mm, and the distance between the outlet 105 and the first side wall 111A is 5 mm, 6 mm, or 7 mm.

[0229] In some embodiments, the disturbance mechanism 120 has a first surface 1221A located in the dust collecting chamber 101 and away from the top wall 111E, and the first surface 1221A is inclined relative to the first direction X; along the direction from the third side wall 111C to the first side wall 111A, the distance between the first surface 1221A and the bottom wall 111F gradually decreases; the bottom wall 111F is parallel to the first direction X.

[0230] The first surface 1221A of the disturbance mechanism 120 is inclined relative to the first direction X. Therefore, when the multi-layer pole ear 210 is inserted into the dust collecting chamber 101, the first surface 1221A of the disturbance mechanism 120 is also inclined relative to the multi-layer pole ear 210. The disturbance mechanism 120 can contact and squeeze the multi-layer pole ear 210 through the first surface 1221A. The inclined first surface 1221A can be more adaptable to the shape of the multi-layer pole ear 210 after bending and deformation. During the bending and deformation process of the multi-layer pole ear 210, the disturbance mechanism 120 can contact the multi-layer pole ear 210 through the first surface 1221A as much as possible, thereby increasing the contact area between the disturbance mechanism 120 and the multi-layer pole ear 210. At the same time, it can also minimize the squeezing of the multi-layer pole ear 210 by the edge of the disturbance mechanism 120, which causes the multi-layer pole ear 210 to produce local concave deformation defects due to large local stress.

[0231] In some embodiments, the angle between the first surface 1221A and the bottom wall 111F is 5 to 45 degrees. For example, the angle between the first surface 1221A and the bottom wall 111F is 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees or 45 degrees.

[0232] The angle between the first surface 1221A and the bottom wall 111F is limited within this range. When the multi-layer pole ear 210 is inserted into the dust collecting chamber 101, the angle between the first surface 1221A and the multi-layer pole ear 210 is also limited within this range. This can reduce the problem of the edge of the disturbance mechanism 120 easily squeezing the multi-layer pole ear 210 due to a too small angle and reduce the problem of the contact area between the disturbance mechanism 120 and the multi-layer pole ear 210 being too small due to a too large angle.

[0233] Further, the angle between the first surface 1221A and the bottom wall 111F is 20 to 40 degrees. Exemplarily, the angle between the first surface 1221A and the bottom wall 111F is 20 degrees, 25 degrees, 30 degrees, 35 degrees or 40 degrees.

[0234] Furthermore, the angle between the first surface 1221A and the bottom wall 111F is 20 to 30 degrees. Exemplarily, the angle between the first surface 1221A and the bottom wall 111F is 20 degrees, 22 degrees, 25 degrees, 28 degrees or 30 degrees.

[0235] In some embodiments, the disturbance mechanism 120 further has two second surfaces 1221C connected to the first surface 1221A. Along the first direction X, the first surface 1221A and the second surface 1221C are connected to form a corner 1221B, and the corner 1221B is a smooth transition.

[0236] Setting the corner 1221B to a smooth transition can reduce the risk of scratching the multi-layer tab 210 caused by the corner 1221B to a certain extent.

[0237] In some embodiments, the agitation mechanism 120 includes a dust suction channel 1220 .

[0238] As an example, the dust suction channel 1220 has two opposite ends, one end is an air inlet end, and the other end is an air outlet end. The air inlet end and the air outlet end of the dust suction channel 1220 respectively pass through the opposite ends of the disturbance mechanism 120. The air inlet end can be connected to the dust collecting chamber 101, and the air outlet end can be connected to the external space of the dust collecting chamber 101. Figure 7 (a) to (c) show various different situations of the dust suction channel 1220 of the disturbance mechanism 120.

[0239] The disturbance mechanism 120 itself has a dust suction channel 1220, and negative pressure can be generated in the dust suction channel 1220. During the process of the disturbance mechanism 120 disturbing the multi-layer pole ear 210, or after the disturbance mechanism 120 disturbs the multi-layer pole ear 210, the polluted particles in the interlayer gaps of the multi-layer pole ear 210 can be sucked away through the dust suction channel 1220, thereby achieving dust removal for the multi-layer pole ear 210 and further enhancing the dust removal effect on the multi-layer pole ear 210.

[0240] In this embodiment, the multi-layered pole tabs 210 can be dusted by the disturbance mechanism 120 itself. Under the premise that the multi-layered pole tabs 210 are dusted by the negative pressure in the dust collecting chamber 101 of the dust removal mechanism 110, the disturbance mechanism 120 itself can also play a certain dust removal effect, further enhancing the dust removal effect on the multi-layered pole tabs 210. It can be understood that the disturbance mechanism 120 of this embodiment can remove dust from the multi-layered pole tabs 210. In other embodiments, the disturbance mechanism 120 itself may not remove dust from the multi-layered pole tabs 210, but only disturb the multi-layered pole tabs 210.

[0241] In some embodiments, the negative pressure wind speed of the dust suction channel 1220 is 1-3 m / s. For example, the negative pressure wind speed of the dust suction channel 1220 can be 1 m / s, or 2 m / s, or 3 m / s.

[0242] The negative pressure wind speed of the dust suction channel 1220 is limited within this range, which can alleviate the problem of poor absorption of polluted particles due to too low negative pressure wind speed of the dust suction channel 1220, and the problem of adsorption of the multi-layer pole ear 210 due to too high negative pressure wind speed of the dust suction channel 1220, thereby affecting the disturbance of the multi-layer pole ear 210.

[0243] Furthermore, the negative pressure wind speed of the dust suction channel 1220 can be preferably 1-2 m / s. Further limiting the negative pressure wind speed of the dust suction channel 1220 within this preferred range can achieve a better negative pressure suction effect on polluted particles while having little impact on the disturbance state of the multi-layer tab 210.

[0244] In some embodiments, the negative pressure wind speed of the dust collection chamber is 15-25 m / s. For example, the negative pressure wind speed of the dust collection chamber can be 15 m / s, or 20 m / s, or 25 m / s.

[0245] Limiting the negative pressure wind speed of the dust collecting chamber 101 within this range can alleviate the problem of poor absorption of polluted particles due to too low negative pressure wind speed in the dust collecting chamber 101, as well as the problem of disturbing the multi-layer pole ear 210 due to too high negative pressure wind speed in the dust collecting chamber 101.

[0246] Moreover, the negative pressure wind speed of the dust suction channel 1220 is lower than the negative pressure wind speed of the dust collecting chamber 101, that is, low-pressure wind speed is used in the dust suction channel 1220 to remove dust from the multi-layer pole ears 210. The reason is that since the disturbance mechanism 120 is used to disturb the multi-layer pole ears 210, the disturbance mechanism 120 will contact the multi-layer pole ears 210 or be closer to the multi-layer pole ears 210. If a larger negative pressure wind speed is used in the dust suction channel 1220, it will form an adsorption effect on the multi-layer pole ears 210 to a certain extent, thereby affecting the amplitude or frequency of the shaking, vibration or shaking of the multi-layer pole ears 210, and then affecting the ejection of polluted particles in the interlayer gaps of the multi-layer pole ears 210. Therefore, low-pressure wind speed is used in the dust suction channel 1220 to remove dust from the multi-layer pole ears 210.

[0247] Furthermore, the negative pressure wind speed of the dust collecting chamber 101 can be preferably 20-25 m / s. Further limiting the negative pressure wind speed of the dust collecting chamber 101 within this preferred range can achieve a better negative pressure absorption effect on the polluted particles while having little impact on the disturbance state of the multi-layer tab 210.

[0248] In some embodiments, the top wall 111E has a through hole 106, and the disturbance mechanism 120 includes a driving member 121 and a disturbance member 122; the driving member 121 is arranged outside the dust collecting chamber 101; one end of the disturbance member 122 is arranged in the dust collecting chamber 101, and the other end extends from the through hole 106 to the outside of the dust collecting chamber 101 and is connected to the driving member 121; wherein, the driving member 121 is used to drive the disturbance member 122 to move, thereby disturbing the multi-layer pole ear 210.

[0249] The disturbance mechanism 120 includes a driving member 121 and a disturbance member 122. The driving member 121 serves as a power source, and the disturbance member 122 serves as an implementation member. The driving member 121 can drive the disturbance member 122 to move to disturb the multi-layer pole ear 210. The driving member 121 is arranged outside the dust collecting chamber 101, which can reduce the impact of pollutants in the dust collecting chamber 101 on the driving member 121, and also alleviate the problem that the size of the dust collecting chamber 101 needs to be set larger due to the driving member 121 being arranged in the dust collecting chamber 101. Since the multi-layer pole ear 210 is located in the dust collecting chamber 101, one end of the disturbance member 122 needs to be located in the dust collecting chamber 101 to disturb the multi-layer pole ear 210 in the dust collecting chamber 101, and the other end of the disturbance member 122 needs to be located outside the dust collecting chamber 101 to connect with the driving member 121.

[0250] In some embodiments, the disturbance member 122 includes a disturbance block 1221 and a connecting rod 1222; the disturbance block 1221 is arranged in the dust collecting chamber 101, and is used to abut the multi-layer pole ear 210; one end of the connecting rod 1222 is arranged in the dust collecting chamber 101 and connected to the disturbance block 1221, and the other end extends from the through hole 106 to the outside of the dust collecting chamber 101 and is connected to the driving member 121.

[0251] The disturbance block 1221 is a component that abuts the multi-layer pole ear 210, and the connecting rod 1222 is an intermediate connecting component that connects the disturbance block 1221 and the driving member 121. Driven by the driving member 121, the connecting rod 1222 moves together with the disturbance block 1221. The disturbance member 122 is set as two components, and the two components together constitute the disturbance member 122, wherein the disturbance block 1221 mainly plays the role of disturbing the multi-layer pole ear 210, and the connecting rod 1222 mainly plays the role of connecting the disturbance block 1221 to the driving member 121. Therefore, the materials of the disturbance block 1221 and the connecting rod 1222 can be selected respectively to achieve a better disturbance effect of the disturbance block 1221 on the multi-layer pole ear 210 and a more stable connection effect of the connecting rod 1222.

[0252] In some embodiments, when the disturbance member 122 includes a disturbance block 1221 and a connecting rod 1222, and one end of the connecting rod 1222 is arranged in the dust collecting chamber 101 and connected to the disturbance block 1221, and the other end extends from the through hole 106 to the outside of the dust collecting chamber 101 and is connected to the driving member 121, the disturbance mechanism 120 may include a dust suction channel 1220, one end of the dust suction channel 1220 passes through the disturbance block 1221, and the other end passes through the part of the connecting rod 1222 located outside the dust collecting chamber 101.

[0253] The disturbance mechanism 120 itself has a dust suction channel 1220. During the process of the disturbance mechanism 120 disturbing the multi-layer pole ear 210, or after the disturbance mechanism 120 disturbs the multi-layer pole ear 210, the polluted particles in the interlayer gaps of the multi-layer pole ear 210 can be sucked out of the dust collecting chamber 101 through the dust suction channel 1220, thereby achieving dust removal for the multi-layer pole ear 210 and further enhancing the dust removal effect on the multi-layer pole ear 210.

[0254] See again Figure 7 , Figure 7 (a) to (c) show different positions of the dust suction channel 1220 passing through the disturbance block 1221, wherein: Figure 7 (a) shows that the dust suction channel 1220 passes through the disturbance block 1221 at the corner 1221B. Figure 7 (b) shows that the dust suction channel 1220 passes through the disturbance block 1221 at the first surface 1221A. Figure 7 (c) shows that the position where the dust suction channel 1220 passes through the disturbance block 1221 is the second surface 1221C.

[0255] It can be understood that in the embodiment of the present application, the dust suction channel 1220 passes through the disturbance block 1221 for negative pressure suction of polluted particles in the dust collecting chamber 101, and the position where the dust suction channel 1220 passes through the disturbance block 1221 can also be other situations. For example, it can simultaneously pass through the first surface 1221A, the corner 1221B and the second surface 1221C to increase the suction effect on the polluted particles.

[0256] In some embodiments, the disturbance block 1221 is a flexible member, or at least the surface of the disturbance block 1221 for contacting the multi-layer tab 210 is coated with a flexible layer. In this way, the risk of the disturbance block 1221 scratching the multi-layer tab 210 can be reduced.

[0257] When the disturbance block 1221 is a flexible part, that is, the overall material of the disturbance block 1221 is a flexible material, the manufacturing method of the disturbance block 1221 is simpler; when the disturbance block 1221 is at least used to abut the surface of the multi-layer pole ear 210 and is coated with a flexible layer, a harder material can be used inside the flexible layer to achieve better disturbance of the multi-layer pole ear 210 by the disturbance block 1221.

[0258] The present application also provides a dust removal system for removing dust from the multi-layer tabs 210 of the electrode assembly 200. Fig.13 The dust removal system includes a dust removal device 100, a transmission mechanism 300 and a controller (not shown in the figure). The dust removal device 100 is used to remove dust from the multi-layer pole ears 210 of the electrode assembly 200. The specific structure of the dust removal device 100 refers to the above embodiment.

[0259] The transmission mechanism 300 is used to move the electrode assembly 200 so that the multi-layer electrode tabs 210 of the electrode assembly 200 are inserted into the dust collecting chamber 101 from the inlet 102 .

[0260] The controller is electrically connected to the dust removal mechanism 110 and the disturbance mechanism 120 respectively, and is used to control the disturbance mechanism 120 to disturb the multi-layer pole ears 210 located in the dust collecting chamber 101 after the multi-layer pole ears 210 are inserted into the dust collecting chamber 101 from the inlet 102, and to control the dust removal mechanism 110 to remove dust from the multi-layer pole ears 210.

[0261] The dust removal system provided in the embodiment of the present application removes dust from the multi-layer pole ears 210 of the electrode assembly 200 through the dust removal device 100. In the dust removal device 100, the dust collecting chamber 101 of the dust removal mechanism 110 is used for the multi-layer pole ears 210 to be inserted therein through the inlet 102, and the air outlet 103 of the dust collecting chamber 101 is used to connect the exhaust assembly 112, so that a negative pressure is formed in the dust collecting chamber 101, and the polluted particles inside the multi-layer pole ears 210 are sucked out, so as to remove the polluted particles inside the multi-layer pole ears 210. The disturbance mechanism 120 can disturb the multi-layer pole ears 210 located in the dust collecting chamber 101, so that the multi-layer pole ears 210 are shaken or swayed. On the one hand, when the multi-layer pole ears 210 are shaken or swayed, at least part of the polluted particles between the adjacent layers of pole ears 210 can be removed. Particles are ejected. On the other hand, the shaking or swaying of the multi-layer pole ear 210 can also change the interlayer gap of the adjacent layer pole ears 210. After the interlayer gap is increased, it is easier to remove the polluted particles in the interlayer gap, thereby reducing the residual polluted particles inside the integrated pole ear part welded by the multi-layer pole ear 210, thereby improving the quality of the electrode assembly 200, and improving the stability and service life of the electrode assembly 200; the electrode assembly 200 is transmitted by the transmission mechanism 300, which is convenient for the multi-layer pole ears 210 of the electrode assembly 200 to be inserted into the dust collecting chamber 101, which is beneficial to improve the automation of the transmission of the electrode assembly 200; the disturbance of the multi-layer pole ear 210 by the disturbance mechanism 120 and the dust removal of the multi-layer pole ear 210 by the dust removal mechanism 110 are controlled by the controller, which is beneficial to realize the control automation of the dust removal process.

[0262] An embodiment of the present application also provides a battery production system, including a dust removal device and a welding device. The dust removal device adopts the dust removal device 100 of any of the above schemes. The dust removal device 100 is used to remove dust from the multi-layer pole ears 210 of the electrode assembly 200. The welding device is located downstream of the dust removal device 100 and is used to weld the multi-layer pole ears 210 of the electrode assembly 200 after dust removal by the dust removal device 100.

[0263] The battery production system provided by the present application removes dust from the multi-layer pole ear 210 of the electrode assembly 200 through the dust removal device 100. In the dust removal device 100, the dust collecting chamber 101 of the dust removal mechanism 110 is used for the multi-layer pole ear 210 to be inserted therein through the inlet 102, and the air outlet 103 of the dust collecting chamber 101 is used to connect the exhaust assembly 112, so that a negative pressure is formed in the dust collecting chamber 101, and the polluted particles inside the multi-layer pole ear 210 are sucked, so as to remove the polluted particles inside the multi-layer pole ear 210. The disturbance mechanism 120 can disturb the multi-layer pole ear 210 located in the dust collecting chamber 101, so that the multi-layer pole ear 210 is shaken or swayed. On the one hand, the multi-layer pole ear 21 When the multi-layer pole ear 210 is shaken or swung, at least part of the polluted particles between adjacent layers of the pole ears 210 can be ejected. On the other hand, the shaking or swaying of the multi-layer pole ears 210 can also change the interlayer gaps of the adjacent layers of the pole ears 210. When the interlayer gaps are increased, it is easier to remove the polluted particles in the interlayer gaps, thereby reducing the residual polluted particles in the interlayer gaps of the multi-layer pole ears 210. The welding device welds the multi-layer pole ears 210 of the electrode assembly 200 after the dust removal device 100 has removed the dust. After the multi-layer pole ears 210 of the electrode assembly 200 are welded, there are fewer polluted particles remaining inside the integrated pole ear part, thereby improving the quality of the electrode assembly 200 and improving the stability and service life of the electrode assembly 200.

[0264] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0265] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A dust removal method, characterized in that: Used for removing dust from the multi-layer tabs of an electrode assembly, the dust removal method comprises: The multi-layer tabs are arranged in a dust collecting chamber of a dust removal mechanism; Controlling the disturbance mechanism to disturb the multi-layered tab; The dust collecting chamber of the dust removal mechanism is controlled to form negative pressure.

2. The dust removal method according to claim 1, characterized in that: The step of controlling the disturbance mechanism to disturb the multi-layer tab comprises: Controlling the disturbance mechanism to strike the multi-layered pole tab at least once from one side of the multi-layered pole tab along the stacking direction of the multi-layered pole tab; or Along the stacking direction of the multi-layer pole tab, the disturbance mechanism is controlled to move the multi-layer pole tab at least once from opposite sides of the multi-layer pole tab.

3. The dust removal method according to claim 1, characterized in that: The disturbance mechanism includes a dust suction channel; the step of controlling the disturbance mechanism to disturb the multi-layer tab includes: The dust suction channel generates negative pressure, and the multi-layer pole tabs are dusted through the dust suction channel.

4. The dust removal method according to claim 3, characterized in that: The negative pressure wind speed of the dust suction channel is 1-3 m / s.

5. The dust removal method according to claim 1, characterized in that: The negative pressure wind speed of the dust collecting chamber is 15-25 m / s.

6. The dust removal method according to any one of claims 1 to 5, characterized in that: The dust collecting chamber has an inlet and an air outlet; the air outlet is connected to the air extraction component through a pipeline; wherein the step of arranging the multi-layer tabs in the dust collecting chamber of the dust removal mechanism comprises: Insert the multi-layer pole ear into the dust collecting chamber from the inlet, and space the end of the multi-layer pole ear from the air outlet; wherein, along the direction from the root to the end of the multi-layer pole ear, the distance between the end of the multi-layer pole ear and the air outlet is 5 to 10 mm.

7. The dust removal method according to claim 6, characterized in that: Along the direction from the root to the end of the multi-layer pole ear, the inlet and the air outlet are arranged opposite to each other; wherein the step of arranging the multi-layer pole ear in the dust collecting chamber of the dust removal mechanism includes: The multi-layer electrode tab is inserted into the dust collecting chamber from the inlet along a direction from the root to the end of the multi-layer electrode tab.

8. The dust removal method according to claim 6, characterized in that: The direction from the root to the end of the multi-layer pole ear is defined as a first direction, the stacking direction of the multi-layer pole ear is defined as a second direction, and a third direction is defined to intersect both the first direction and the second direction; along the first direction, the dust collecting chamber has a first side wall and a third side wall opposite to each other; along the third direction, the dust collecting chamber has a second side wall and a fourth side wall opposite to each other; the first side wall has the air outlet, the second side wall has the inlet, the fourth side wall has the outlet, and the third side wall has a avoidance port connecting the inlet and the outlet; wherein, the step of arranging the multi-layer pole ear in the dust collecting chamber of the dust removal mechanism comprises: Inserting the multi-layer tab into the dust collecting chamber from the inlet along the third direction; The dust removal method further comprises: After the dust removal is completed, the multi-layer pole tab is moved out of the dust collecting chamber from the outlet along the third direction.

9. The dust removal method according to claim 6, characterized in that: Along the stacking direction of the multi-layer tabs, the dust collecting chamber has a top wall and a bottom wall opposite to each other; the top wall has a through hole; the disturbance mechanism includes: A driving member, disposed outside the dust collecting chamber; A disturbance member, one end of which is disposed in the dust collecting chamber, and the other end of which extends from the through hole to the outside of the dust collecting chamber and is connected to the driving member; Wherein, the driving member is used to drive the disturbing member to move, thereby disturbing the multi-layer pole ear.

10. The dust removal method according to claim 9, characterized in that: The disturbance element comprises: A disturbance block is disposed in the dust collecting chamber and is used to abut against the multi-layer pole ear; A connecting rod has one end disposed in the dust collecting chamber and connected to the disturbance block, and the other end extending from the through hole to the outside of the dust collecting chamber and connected to the driving member.

11. The dust removal method according to claim 10, characterized in that: The disturbance block is a flexible member, or at least the surface of the disturbance block for contacting the multi-layer tab is coated with a flexible layer.

12. The dust removal method according to claim 10, characterized in that: The multi-layer pole lug is a planar structure, and the surface of the disturbance block facing the multi-layer pole lug is inclined relative to the multi-layer pole lug; along the direction from the root to the end of the multi-layer pole lug, the distance between the surface of the disturbance block facing the multi-layer pole lug and the multi-layer pole lug gradually decreases.

13. The dust removal method according to claim 12, characterized in that: The angle between the surface of the disturbance block facing the multi-layer pole ear and the multi-layer pole ear is 5-45 degrees.

14. The dust removal method according to claim 12, characterized in that: Along the direction from the root to the end of the multi-layer pole ear, the surface of the disturbance block facing the multi-layer pole ear is connected to the side of the disturbance block to form two corners; wherein the step of arranging the multi-layer pole ear in the dust collecting chamber of the dust removal mechanism also includes: The disturbance block is located between the multi-layer pole lug and the top wall; along the stacking direction of the multi-layer pole lug, the projection of one corner on the plane where the multi-layer pole lug is located is located on the multi-layer pole lug, and the projection of another corner on the plane where the multi-layer pole lug is located is located outside the multi-layer pole lug.

15. The dust removal method according to claim 14, characterized in that: At least the corner projected on the multi-layer pole ear is smoothly transitioned.

16. The dust removal method according to claim 14, characterized in that: Along the stacking direction of the multi-layer pole lug, the ratio of the width of the projection of the surface of the disturbance block facing the multi-layer pole lug on the multi-layer pole lug to the width of the multi-layer pole lug is 1 / 3~2 / 3; wherein, the width of the projection is the dimension of the projection along the direction from the root to the end of the multi-layer pole lug, and the width of the multi-layer pole lug is the dimension of the multi-layer pole lug along the direction from the root to the end of the multi-layer pole lug.

17. A dust removal device for removing dust from multi-layer tabs of an electrode assembly, characterized in that: The dust removal device comprises: The dust removal mechanism has a dust collecting chamber; the dust collecting chamber has an inlet and an air outlet; the air outlet is connected to the air extraction component; the inlet is used for the multi-layer pole ear to be inserted into the dust collecting chamber; A disturbance mechanism is connected to the dust removal mechanism; at least a portion of the disturbance mechanism is disposed in the dust collecting chamber; and the disturbance mechanism is used to disturb the multi-layer pole ears in the dust collecting chamber.

18. The dust removal device according to claim 17, characterized in that: Along the first direction, the dust collecting chamber has a first side wall and a third side wall opposite to each other; along the second direction, the dust collecting chamber has a top wall and a bottom wall opposite to each other; along the third direction, the dust collecting chamber has a second side wall and a fourth side wall opposite to each other; wherein the first direction, the second direction and the third direction intersect each other; The first side wall has the air outlet, the second side wall has the inlet, the fourth side wall has the outlet, and the third side wall has a avoidance opening connecting the inlet and the outlet; the outlet is used for the multi-layer pole ear to move out of the dust collecting chamber.

19. The dust removal device according to claim 18, characterized in that: Along the first direction, the distance between the inlet and the first side wall is 4-9 mm, and the distance between the outlet and the first side wall is 4-9 mm.

20. The dust removal device according to claim 18, characterized in that: The disturbance mechanism includes a first surface located in the dust collecting chamber and away from the top wall, the first surface is inclined relative to the first direction; along the direction from the third side wall to the first side wall, the distance between the first surface and the bottom wall gradually decreases; the bottom wall is parallel to the first direction.

21. The dust removal device according to claim 20, characterized in that: The included angle between the first surface and the bottom wall is 5 to 45 degrees.

22. The dust removal device according to claim 20, characterized in that: The disturbance mechanism further includes two second surfaces connected to the first surface. Along the first direction, the first surface and the second surface are connected to form a corner, and the corner is a smooth transition.

23. The dust removal device according to any one of claims 17 to 22, characterized in that: The disturbance mechanism includes a dust suction channel.

24. The dust removal device according to claim 18, characterized in that: The top wall has a through hole, and the disturbance mechanism includes: A driving member, disposed outside the dust collecting chamber; A disturbance member, one end of which is disposed in the dust collecting chamber, and the other end of which extends from the through hole to the outside of the dust collecting chamber and is connected to the driving member; Wherein, the driving member is used to drive the disturbing member to move, thereby disturbing the multi-layer pole ear.

25. The dust removal device according to claim 24, characterized in that: The disturbance element comprises: A disturbance block is disposed in the dust collecting chamber and is used to abut against the multi-layer pole ear; A connecting rod has one end disposed in the dust collecting chamber and connected to the disturbance block, and the other end extending from the through hole to the outside of the dust collecting chamber and connected to the driving member.

26. The dust removal device according to claim 25, characterized in that: The disturbance mechanism comprises a dust suction channel, one end of which passes through the disturbance block, and the other end of which passes through the portion of the connecting rod located outside the dust collecting chamber.

27. The dust removal device according to claim 25, characterized in that: The disturbance block is a flexible member, or at least the surface of the disturbance block for contacting the multi-layer tab is coated with a flexible layer.

28. A dust removal system, characterized in that: include: The dust removal device according to any one of claims 17 to 27; A transmission mechanism, used for moving the electrode assembly so that the multi-layer electrode tab is inserted into the dust collecting chamber from the inlet; The controller is electrically connected to the dust removal mechanism and the disturbance mechanism, respectively, and is used to control the disturbance mechanism to disturb the multi-layer pole ears in the dust collecting chamber after the multi-layer pole ears are inserted into the dust collecting chamber from the inlet, and to control the dust removal mechanism to remove dust from the multi-layer pole ears.

29. A battery production system, characterized in that: include: The dust removal device according to any one of claims 17 to 27 is used to remove dust from the multi-layer tabs of the electrode assembly; The welding device is located downstream of the dust removal device and is used to weld the multi-layer pole ears of the electrode assembly after the dust is removed by the dust removal device.

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