Pole piece rolling equipment

Abstract

The utility model discloses pole piece rolling equipment which comprises a plurality of processing units which are sequentially arranged along a first direction, each processing unit comprises a protective cover and a processing assembly, the protective cover is arranged outside the corresponding processing assembly in a covering manner, a through hole for a pole piece to pass through is formed in the protective cover, and the processing assembly is arranged in the through hole. Protective covers of at least part of the processing units are connected with an exhaust system, the multiple processing units comprise feeding units, rolling units and receiving units which are sequentially arranged in the first direction, the rolling units are used for rolling the pole pieces, the feeding units are used for feeding materials to the rolling units, and the receiving units are used for receiving the materials; and the receiving unit is used for receiving the pole pieces processed by the rolling unit. According to the pole piece rolling equipment disclosed by the embodiment of the utility model, the protective covers and the exhaust systems are arranged on at least part of the processing units, so that harmful gas generated in the pole piece processing process can be exhausted in time, and the influence of the generated harmful gas on human health is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production and manufacturing, in particular to a pole piece rolling equipment. Background Art

[0002] With the rapid development of the new energy industry, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydraulic power plants, thermal power plants, wind power plants and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles and electric cars, as well as in many fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also increasing continuously.

[0003] The pole piece is an important part of the battery. The production process of the pole piece mainly includes coating, rolling and slitting. Among them, the active material is coated on the current collector through a coating device to form a pole piece, and the pole piece coated with the active material is rolled through a rolling device. However, in the related art, the harmful gases generated during the working process of the pole piece rolling equipment affect human health. Therefore, how to reduce the impact of the harmful gases generated during the working process of the pole piece rolling equipment on human health is a technical problem to be solved urgently. Content of the Utility Model

[0004] In view of the above problems, the utility model provides a pole piece rolling equipment, which can reduce the impact of the harmful gases generated during the working process of the pole piece rolling equipment on human health.

[0005] The utility model provides a pole piece rolling equipment, including: a plurality of processing units arranged in sequence along a first direction, each of the processing units includes a protective cover and a processing component, the protective cover covers the outside of the corresponding processing component, the protective cover is provided with a through hole for the pole piece to pass through, at least part of the protective covers of the processing units are connected with an exhaust system, the plurality of processing units include a feeding unit, a rolling unit and a receiving unit arranged in sequence along the first direction, the rolling unit is used for rolling the pole piece, the feeding unit is used for feeding the pole piece to the rolling unit, and the receiving unit is used for receiving the pole piece processed by the rolling unit.

[0006] In the above technical solution, by providing a protective cover that can isolate the processing unit from the external space outside each of the above-mentioned processing units, the processing process of the pole piece can be located within the space defined by the protective cover, facilitating the separate control of the space environment where each processing process of the pole piece is located, which is beneficial to improving the processing quality of the pole piece. It can also reduce the direct discharge of harmful gases generated during the pole piece processing process by each processing unit into the surrounding environment, thereby affecting the human body. Moreover, by providing an exhaust and ventilation system on at least some of the processing units, the harmful gases generated during the pole piece processing process can be discharged in a timely manner, thereby further reducing the impact of the generated harmful gases on human health.

[0007] In some embodiments, the exhaust and ventilation system includes an exhaust pipe and an intake pipe. The exhaust pipe is connected to the protective cover and is used to discharge the gas inside the protective cover, and the intake pipe is connected to the protective cover and is used to supplement gas into the protective cover.

[0008] In the above technical solution, the harmful gas inside the protective cover can be discharged through the exhaust pipe, and the intake pipe supplements gas into the protective cover, which can keep the pressure inside the protective cover within a preset range. For example, the inside of the protective cover can be in a negative pressure state, avoiding or reducing the leakage of waste gas inside the protective cover.

[0009] In some embodiments, a differential pressure gauge is provided inside the protective cover connected to the exhaust and ventilation system. The differential pressure gauge is used to monitor the air pressure inside the protective cover, and the differential pressure gauge is electrically connected to the air extraction pump of the exhaust and ventilation system.

[0010] In the above technical solution, by providing a differential pressure gauge inside the protective cover connected to the exhaust and ventilation system, the differential pressure gauge can monitor the air pressure inside the protective cover. And by electrically connecting the differential pressure gauge to the air extraction pump of the exhaust and ventilation system, the power of the air extraction pump can be adjusted according to the detection data of the differential pressure gauge, which can better control the air pressure inside the protective cover to be maintained within a preset range.

[0011] In some embodiments, a harmful gas detector is provided inside the protective cover connected to the exhaust and ventilation system. The harmful gas detector is electrically connected to the air extraction pump of the exhaust and ventilation system.

[0012] In the above technical solution, by providing a harmful gas detector, the concentration of harmful gases inside the protective cover can be detected. And by electrically connecting the harmful gas detector to the air extraction pump of the exhaust and ventilation system, the power of the air extraction pump can be adjusted according to the concentration of harmful gases inside the protective cover, so that the waste gas generated inside the protective cover can be discharged in a timely manner, making the concentration of harmful gases inside the protective cover at a relatively low level, further reducing the impact on human health.

[0013] In some embodiments, at least a part of the protective cover includes a transparent observation part provided with an operation hole. The pole piece rolling equipment further includes a glove device installed in the operation hole. The glove device includes a glove box body and gloves provided in the glove box body. The glove box body is used to open and close the operation hole.

[0014] In the above technical solution, by making at least a part of the protective cover have a transparent observation part, it is convenient for personnel to observe the processing situation of the pole piece inside the protective cover through the observation part. And by providing a glove device, when a pole piece rolling failure or other situations occur, the staff can operate after putting on the gloves in the glove box body, reducing or avoiding the adverse effects on the human body caused by direct contact between the human body and the pole piece. And by providing a transparent observation part, when the staff operates inside the pole piece rolling equipment, it is convenient to observe the inside of the pole piece rolling equipment, facilitating the staff to perform relevant operations.

[0015] In some embodiments, the glove box body includes a connected box cover and box seat. The box seat is installed in the operation hole. The box seat has a receiving cavity, a first open opening, and a second open opening. The gloves are located in the receiving cavity. The first open opening is located on the side of the receiving cavity close to the inside of the protective cover, and the second open opening is located on the side of the receiving cavity close to the outside of the protective cover. The box cover is used to open or close the second open opening.

[0016] In the above technical solution, by setting the glove box body to include a box cover and a box seat, and by installing the box seat in the operation hole on the observation part, it is convenient for the installation of the glove box body. By setting the box seat to have a receiving cavity and a first open opening and a second open opening on both sides of the receiving cavity, the gloves are located in the receiving cavity, which is convenient for glove storage. By covering the box cover on the second open opening, it is convenient for the opening and closing of the glove box body, facilitating the operator to take the gloves. The staff can stretch their hands into the gloves through the second open opening. When in use, the staff stretches their hands into the glove box interior for operation, and extends their hands into the protective cover through the first open opening to perform relevant operations on the interior of the equipment. After the operation is completed, the staff takes out their hands, and the gloves are left in the receiving cavity, increasing the operation convenience and the airtightness of the equipment.

[0017] In some embodiments, a seal is provided between the outer peripheral wall of the box seat and the inner peripheral wall of the operation hole.

[0018] In the above technical solution, by providing a seal between the outer peripheral wall of the box seat and the inner peripheral wall of the operation hole, the seal can seal the gap between the outer peripheral wall of the seat and the inner peripheral wall of the operation hole, increasing the airtightness of the pole piece rolling equipment and reducing the leakage of waste gas inside the protective cover.

[0019] In some embodiments, the lid is rotatable relative to the base to open or close the second open opening.

[0020] In the above technical solution, by making the lid rotatable relative to the base to open or close the second open opening, the opening and closing operations of the lid are facilitated, making the opening and closing operations of the lid more convenient.

[0021] In some embodiments, a latch is provided on the base, and a locking member is provided on the lid. The locking member is detachably engaged with the latch. When the locking member is engaged with the latch, the lid is in a locked state. When the locking member is disengaged from the latch, the lid is in an unlocked state and the lid is rotatable relative to the base.

[0022] In the above technical solution, by providing a latch on the base and a locking member on the lid, the lid is in a locked state through the cooperation of the locking member and the latch when the lid is closed, which can reduce the leakage of exhaust gas in the protective cover caused by the lid not being closed in place.

[0023] In some embodiments, the locking member includes a handle and a locking ring. The locking ring is connected to the handle. The handle is rotatably connected to the lid. The handle is rotatable relative to the lid between a first position and a second position. When the handle is in the first position, the locking ring is hung on the latch. When the handle is in the second position, the locking ring is disengaged from the latch.

[0024] In the above technical solution, by setting the locking member to include a handle and a locking ring, the connection or disengagement of the locking ring and the latch is achieved through the rotation of the handle, making the connection and separation operations of the locking member and the latch more convenient, reducing the complexity of the unlocking and locking processes, and facilitating the operation while locking the lid.

[0025] In some embodiments, one end of the handle is rotatably connected to the lid, and the other end of the handle is a free end. The free end of the handle is closer to the lid when in the first position than when in the second position.

[0026] In the above technical solution, when the lid is in the closed position, making the free end of the handle closer to the lid can make the handle be received on one side of the lid, making the structure of the glove device more compact.

[0027] In some embodiments, the plurality of processing units include a thickness measuring unit and a quality inspection unit. The thickness measuring unit is configured to measure the thickness of the electrode sheet. The thickness measuring unit is located between the rolling unit and the quality inspection unit, and the quality inspection unit is located between the thickness measuring unit and the material receiving unit. The processing component of the quality inspection unit includes a coding mechanism, and the processing component of the thickness measuring unit includes a thickness gauge. The coding mechanism is electrically connected to the thickness gauge, and the coding mechanism is configured to mark defective electrode sheets.

[0028] In the above technical solution, by providing a thickness measuring unit and arranging the thickness measuring unit between the rolling unit and the quality inspection unit, the thickness of the electrode sheet can be measured, so that the thickness of the electrode sheet after rolling can be monitored. By providing a quality inspection unit and electrically connecting the coding mechanism of the quality inspection unit to the thickness gauge of the thickness measuring unit, when the thickness gauge of the thickness measuring unit detects that the thickness of the electrode sheet after rolling does not meet the requirements, the coding mechanism of the quality inspection unit can code and mark the defective electrode sheet with an unqualified thickness, which is convenient for monitoring the quality of the electrode sheet.

[0029] In some embodiments, the plurality of processing units include a heating unit. The heating unit is disposed between the rolling unit and the material receiving unit, and the heating unit is configured to heat the electrode sheet.

[0030] In the above technical solution, by providing a heating unit and arranging the heating unit between the rolling unit and the material receiving unit, the electrode sheet after rolling can be heated, which is beneficial to quickly eliminate the residual stress of the rolled electrode sheet, accelerate the thickness rebound of the electrode sheet, and reduce the large thickness rebound of the electrode sheet during subsequent winding and transportation, resulting in serious problems such as winding bulging and deformation, and electrode sheet cracking, which seriously affect the battery life and safety. In addition, by heating the electrode sheet, the heating unit can also reduce the moisture in the electrode sheet. For example, when producing electrode sheets for solid-state batteries, it is beneficial to quickly meet the production requirements of solid-state batteries for electrode sheets.

[0031] In some embodiments, the plurality of processing units include a thickness measuring unit and a quality inspection unit. The thickness measuring unit is configured to measure the thickness of the electrode sheet. The thickness measuring unit is located between the rolling unit and the heating unit, and the quality inspection unit is located between the heating unit and the material receiving unit. The processing component of the quality inspection unit includes a coding mechanism, and the processing component of the thickness measuring unit includes a thickness gauge. The coding mechanism is electrically connected to the thickness gauge, and the coding mechanism is configured to mark defective electrode sheets.

[0032] In the above technical solution, by providing a thickness measuring unit and arranging the thickness measuring unit between the rolling unit and the heating unit, the thickness of the electrode sheet can be measured, so that the thickness of the electrode sheet after rolling can be monitored. After the electrode sheet is rolled by the rolling unit and the thickness is detected by the thickness measuring unit, it is heated by the heating unit, which is beneficial to quickly eliminate the residual stress of the rolled electrode sheet, accelerate the thickness rebound of the electrode sheet, and reduce the large thickness rebound of the electrode sheet during subsequent winding and transportation, which may cause serious problems such as winding bulging and deformation and electrode sheet cracking, seriously affecting the battery life and safety. In addition, by heating the electrode sheet, the heating unit can also reduce the moisture in the electrode sheet. For example, when producing electrode sheets for solid-state batteries, it is beneficial to quickly meet the production requirements of solid-state batteries for electrode sheets.

[0033] Moreover, by providing a quality inspection unit and electrically connecting the coding mechanism of the quality inspection unit to the thickness gauge of the thickness measuring unit, when the thickness gauge of the thickness measuring unit detects that the thickness of the electrode sheet after rolling does not meet the requirements, the coding mechanism of the quality inspection unit can mark the defective electrode sheet with non-compliant thickness, facilitating the monitoring of the quality of the electrode sheet.

[0034] In some embodiments, the plurality of processing units include a quality inspection unit. The quality inspection unit is located between the rolling unit and the receiving unit. The processing component of the quality inspection unit includes a coding mechanism and a vision inspection system. In the transmission direction of the electrode sheet, the coding mechanism is located on the downstream side of the vision inspection system. The coding mechanism is electrically connected to the vision inspection system. The vision inspection system is used to detect whether there are defects on the appearance of the electrode sheet, and the coding mechanism is used to mark the defective position of the electrode sheet.

[0035] In the above technical solution, by providing a quality inspection unit which includes a coding mechanism and a vision inspection system, and the coding mechanism is arranged on the downstream side of the vision inspection system, the vision inspection system can detect whether there are defects on the appearance of the electrode sheet by taking pictures or other means. If there are defects, the coding mechanism will mark the defective position of the electrode sheet, avoiding or reducing the inflow of defective electrode sheets into subsequent processes, which is beneficial to improving the production quality of the battery.

[0036] In some embodiments, the vision inspection system includes two cameras, and the two cameras are arranged on opposite sides in the thickness direction of the electrode sheet.

[0037] In the above technical solution, by making the vision inspection system include two cameras in different directions, the appearance inspection range of the vision inspection system for the electrode sheet is increased, so that the surfaces on both sides in the thickness direction of the electrode sheet can be detected by the vision inspection system for whether there are defects on the appearance, which is beneficial to accurately and quickly screening out defective electrode sheets and improving the production quality of the battery.

[0038] In some embodiments, the quality inspection unit further includes a dust suction mechanism, which includes a dust suction pipe, and the suction port of the dust suction pipe is adjacent to the position on the pole piece corresponding to the coding mechanism.

[0039] In the above technical solution, by making the quality inspection unit include a dust suction mechanism and making the suction port of the dust suction pipe of the dust suction mechanism adjacent to the position on the pole piece corresponding to the coding mechanism, the powder impurities generated during the coding by the coding mechanism in the previous process can be sucked out, the cleanliness during the production of the pole piece can be improved, and the defects of the pole piece caused by impurities can be reduced.

[0040] In some embodiments, the processing component of the quality inspection unit further includes a cooling fan, and the cooling fan is used to blow air flow to the position on the pole piece corresponding to the visual inspection system.

[0041] In the above technical solution, by making the quality inspection unit include a cooling fan and making the cooling fan blow air flow to the position on the pole piece corresponding to the visual inspection system, the air temperature near the pole piece can be reduced, and the error generated during the camera shooting of the visual inspection system due to the relatively high air temperature near the pole piece can be reduced, which is beneficial to improving the photographing quality of the camera for the pole piece and facilitating better identification of the defect position.

[0042] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0043] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0044] Figure 1 is a three-dimensional schematic diagram of a pole piece rolling device according to some embodiments of the present utility model;

[0045] Figure 2 is Figure 1 the front view of the pole piece rolling device in

[0046] Figure 3 is Figure 1 the top view of the pole piece rolling device in

[0047] Figure 4 is a three-dimensional schematic diagram of a glove device according to some embodiments of the present utility model;

[0048] Figure 5 is Figure 4 the front view of the glove device in

[0049] Figure 6 is Figure 4Top view of the glove device in

[0050] Figure 7 is Figure 4 Side view of the glove device in

[0051] Figure 8 Internal schematic diagram of a pole piece rolling device according to some embodiments of the present invention;

[0052] Figure 9 is Figure 8 Internal schematic diagram of the quality inspection unit in

[0053] Reference numerals:

[0054] 100, pole piece rolling device;

[0055] 10, processing unit; 11, protective cover; 111, observation part; 112, operation hole; 12, processing component; 13, exhaust and intake system; 131, exhaust pipe; 132, intake pipe; 133, exhaust manifold; 134, intake manifold;

[0056] 20, glove device; 21, glove box body; 22, box cover; 23, locking part; 231, handle; 232, free end; 233, lock ring; 24, box seat; 25, lock catch; 26, seal;

[0057] 30, feeding unit; 31, unwinding mechanism; 32, stretching mechanism;

[0058] 40, rolling unit; 41, rolling mechanism;

[0059] 50, thickness measuring unit; 51, thickness gauge;

[0060] 60, heating unit; 61, oven;

[0061] 70, quality inspection unit; 71, vision inspection system; 711, camera; 72, cooling fan; 73, coding mechanism; 74, dust suction mechanism; 741, dust suction pipe; 742, suction port; 75, encoding mechanism;

[0062] 80, receiving unit; 81, winding mechanism;

[0063] 200, pole piece. Detailed implementation manners

[0064] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0065] Unless otherwise defined, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs; the terms used in the description of the present utility model in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model; the terms "including" and "having" and any variations thereof in the description and claims of the present utility model and the above accompanying drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of the present utility model or the above accompanying drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.

[0066] The mention of "embodiment" in the present utility model means that the specific features, structures, or characteristics described in connection with the embodiment may be included in at least one embodiment of the present utility model. The phrase appears in various positions in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0067] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", and "attached to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0068] The term "and / or" in the present utility model is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present utility model generally represents an "or" relationship between the associated objects before and after.

[0069] In the embodiments of the present utility model, the same reference numerals denote the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present utility model shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only for illustrative purposes and should not constitute any limitation to the present utility model.

[0070] The "plurality" appearing in the present utility model refers to two or more (including two).

[0071] In the embodiments of the present utility model, if there is no special description, all the implementation manners and optional implementation manners of the present utility model can be combined with each other to form a new technical solution.

[0072] In the embodiments of the present utility model, if there is no special description, all the technical features and optional technical features of the present utility model can be combined with each other to form a new technical solution.

[0073] With the rapid development of the new energy industry, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydraulic, thermal, wind and solar power stations, but also widely used in electric transportation tools such as electric bicycles, electric motorcycles and electric vehicles, as well as in many fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also constantly increasing.

[0074] The electrode sheet is an important component of the battery. The manufacturing process of the electrode sheet mainly includes coating, rolling and slitting. Among them, the active material is coated on the current collector through a coating device to form an electrode sheet, and the electrode sheet coated with the active material is rolled through a rolling device. However, in the related art, the harmful gases generated during the operation of the electrode sheet rolling equipment affect human health. Therefore, how to reduce the impact of the harmful gases generated during the operation of the electrode sheet rolling equipment on human health is a technical problem to be solved urgently.

[0075] Based on this, the present utility model provides an electrode sheet rolling equipment, including: a plurality of processing units arranged in sequence along a first direction, each of the processing units includes a protective cover and a processing component, the protective cover covers the outside of the corresponding processing component, the protective cover is provided with a through hole for the electrode sheet to pass through, at least part of the protective covers of the processing units are connected with an exhaust system, the plurality of processing units include a feeding unit, a rolling unit and a receiving unit arranged in sequence along the first direction, the rolling unit is used for rolling the electrode sheet, the feeding unit is used for feeding the electrode sheet to the rolling unit, and the receiving unit is used for receiving the electrode sheet processed by the rolling unit.

[0076] In the above-mentioned pole piece rolling equipment, by providing a protective cover that can isolate the processing unit from the external space on the outside of each processing unit, the processing process of the pole piece can be located within the space defined by the protective cover, which facilitates the separate control of the space environment where each processing process of the pole piece is located, is conducive to improving the processing quality of the pole piece, and can also reduce the direct discharge of harmful gases generated during the pole piece processing process by each processing unit into the surrounding environment and affecting the human body; moreover, by providing an exhaust system on at least some of the processing units, the harmful gases generated during the pole piece processing process can be discharged in a timely manner, thereby further reducing the impact of the generated harmful gases on human health.

[0077] Reference is made below Figures 1-9 to describe the pole piece rolling equipment 100 according to an embodiment of the present invention.

[0078] Referring to Figures 1-3 , the present invention provides a pole piece rolling equipment 100, including: a plurality of processing units 10 arranged in sequence along a first direction, each processing unit 10 includes a protective cover 11 and a processing component 12, the protective cover 11 covers the outside of the corresponding processing component 12, the protective cover 11 is provided with a through hole for the pole piece 200 to pass through, and the protective covers 11 of at least some of the processing units 10 are connected with an exhaust system 13. The plurality of processing units 10 include a feeding unit 30, a rolling unit 40, and a receiving unit 80 arranged in sequence along the first direction. The rolling unit 40 is used for rolling the pole piece 200, the feeding unit 30 is used for feeding the pole piece 200 to the rolling unit 40, and the receiving unit 80 is used for receiving the pole piece 200 processed by the rolling unit 40.

[0079] The protective cover 11 is provided with a through hole for the pole piece 200 to pass through, and the pole piece 200 can enter or exit the protective cover 11 through the through hole. For example, at least some of the protective covers 11 are provided with two through holes, and the two through holes on the protective cover 11 can be arranged on opposite sides of the protective cover 11 along the first direction. One through hole on the protective cover 11 can be used for the pole piece 200 to enter the protective cover 11, and the other through hole on the protective cover 11 can be used for the pole piece 200 to exit.

[0080] The protective covers 11 of at least some of the processing units 10 are connected with an exhaust system 13. For example, the protective covers 11 of some of the processing units 10 can be connected with an exhaust system 13, or the protective covers 11 of each processing unit 10 can be connected with an exhaust system 13. The exhaust system 13 can discharge the waste gas in the protective cover 11, and while discharging the waste gas in the protective cover 11, it can also supplement gas into the protective cover 11 to keep the air pressure in the protective cover 11 within a preset range.

[0081] The exhaust system 13 discharges the waste gas inside the protective cover 11 to a designated location, and the waste gas discharged to the designated location can be discharged outdoors after being processed.

[0082] When the pole piece rolling equipment 100 is working, the pole piece 200 can be transported in the first direction, and the pole piece 200 can be processed by multiple processing units 10 in sequence. For example, the feeding unit 30 feeds the pole piece 200 to the rolling unit 40 for rolling, and after the pole piece 200 is rolled by the rolling unit 40, it can be collected by the collecting unit 80.

[0083] For example, the first direction can refer to the e1 direction in the attached drawing.

[0084] Among them, the processing component 12 of the feeding unit 30 can include an unwinding mechanism 31. The pole piece 200 can be pre-wound on the unwinding mechanism 31, and the unwinding mechanism 31 can release the wound pole piece 200, and the released pole piece 200 can be conveyed to the rolling unit 40 for rolling.

[0085] Furthermore, the feeding unit 30 can also include a stretching mechanism 32. In the transmission direction of the pole piece 200, the stretching mechanism 32 can be arranged on the downstream side of the unwinding mechanism 31. The unwinding mechanism 31 releases the wound pole piece 200, and the released pole piece 200 can be further unfolded by the stretching mechanism 32 to facilitate subsequent entry into the rolling unit 40 for rolling.

[0086] The processing component 12 of the rolling unit 40 can include a rolling mechanism 41, and the rolling mechanism 41 is used for rolling the pole piece 200.

[0087] The processing component 12 of the collecting unit 80 can include a winding mechanism 81, and the winding mechanism 81 is used for winding and storing the pole piece 200.

[0088] In the above technical solution, by providing a protective cover 11 that can isolate the processing unit 10 from the external space outside each of the above-mentioned processing units 10, the processing process of the pole piece 200 can be located within the space defined by the protective cover 11, which is convenient for separately controlling the space environment where each processing process of the pole piece 200 is located, is beneficial to improving the processing quality of the pole piece 200, and can also reduce the impact on the human body caused by the direct discharge of harmful gases generated during the processing of the pole piece 200 by each processing unit 10 into the surrounding environment; and, by providing an exhaust system 13 on at least part of the processing units 10, the harmful gases generated during the processing of the pole piece 200 can be discharged in time, thereby further reducing the impact of the generated harmful gases on human health.

[0089] Reference Figures 1-3, in some embodiments, the air extraction and supply system 13 includes an air extraction pipe 131 and an air supply pipe 132. The air extraction pipe 131 is connected to the protective cover 11 and is used to exhaust the gas inside the protective cover 11, and the air supply pipe 132 is connected to the protective cover 11 and is used to supply gas to the protective cover 11.

[0090] For example, an air extraction pump is connected to the air extraction pipe 131. When extracting air, the air extraction pump operates to exhaust the waste gas inside the protective cover 11 through the air extraction pipe 131.

[0091] During the process of exhausting the waste gas inside the protective cover 11 through the air extraction pipe 131, the inside of the protective cover 11 can be in a negative pressure state. Gas can be automatically supplied to the protective cover 11 through the air supply pipe 132 under the action of the pressure difference, or gas can be supplied to the protective cover 11 through the air supply pump through the air supply pipe 132. The gas supplied to the protective cover 11 can be air or a protective gas such as nitrogen.

[0092] For example, a single air extraction and supply system 13 can include multiple air extraction pipes 131, multiple air supply pipes 132, an air extraction manifold 133, and an air supply manifold 134. The air extraction manifold 133 aggregates the multiple air extraction pipes 131 to uniformly exhaust the gas inside the protective cover 11; the air supply pipe 132 manifold aggregates the multiple air supply pipes 132 to supply gas to the protective cover 11. Among them, the air extraction manifold 133 and the air supply manifold 134 of different processing units 10 can be respectively arranged on the same side. For example, the air extraction manifold 133 and the air supply manifold 134 of different processing units 10 are both located at the top of the pole piece rolling equipment 100, which is convenient for the pipeline layout of the air extraction and supply system 13.

[0093] In the above technical solution, the harmful gas inside the protective cover 11 can be exhausted through the air extraction pipe 131, and the air supply pipe 132 supplies gas to the protective cover 11, so that the pressure inside the protective cover 11 can be within a preset range. For example, the inside of the protective cover 11 can be in a negative pressure state to avoid or reduce the leakage of waste gas inside the protective cover 11.

[0094] In some embodiments, a differential pressure gauge is provided inside the protective cover 11 connected to the air extraction and supply system 13. The differential pressure gauge is used to monitor the air pressure inside the protective cover 11, and the differential pressure gauge is electrically connected to the air extraction pump of the air extraction and supply system 13.

[0095] The differential pressure gauge is used to monitor the air pressure inside the protective cover 11, and the differential pressure gauge is electrically connected to the air extraction pump of the air extraction and supply system 13. For example, when the differential pressure gauge monitors that the air pressure inside the protective cover 11 is relatively high, the air extraction pump can be turned on or the air extraction power of the air extraction pump can be increased. When the differential pressure gauge monitors that the air pressure inside the protective cover 11 is relatively low, the air extraction pump can be turned off or the air extraction power of the air extraction pump can be reduced.

[0096] In the above technical solution, by arranging a differential pressure gauge inside the protective cover 11 connected to the air extraction and exhaust system 13, the differential pressure gauge can monitor the air pressure inside the protective cover 11, and by electrically connecting the differential pressure gauge to the air extraction pump of the air extraction and exhaust system 13, the power of the air extraction pump can be adjusted according to the detection data of the differential pressure gauge, so as to better control the air pressure inside the protective cover 11 within a preset range.

[0097] In some embodiments, a harmful gas detector is provided inside the protective cover 11 connected to the air extraction and exhaust system 13, and the harmful gas detector is electrically connected to the air extraction pump of the air extraction and exhaust system 13.

[0098] The harmful gas detector is used to monitor the harmful gas inside the protective cover 11. The harmful gas detector is electrically connected to the air extraction pump of the air extraction and exhaust system 13. For example, when the harmful gas detector monitors that the concentration of harmful gas inside the protective cover 11 is relatively high, the air extraction pump can be turned on or the air extraction power of the air extraction pump can be increased. When the harmful gas detector monitors that the concentration of harmful gas inside the protective cover 11 is relatively low, the air extraction pump can be turned off or the air extraction power of the air extraction pump can be decreased.

[0099] In the above technical solution, by arranging the harmful gas detector, the concentration of harmful gas inside the protective cover 11 can be detected, and by electrically connecting the harmful gas detector to the air extraction pump of the air extraction and exhaust system 13, the power of the air extraction pump can be adjusted according to the concentration of harmful gas inside the protective cover 11, so that the waste gas generated inside the protective cover 11 can be discharged in time, and the concentration of harmful gas inside the protective cover 11 can be kept at a relatively low level, further reducing the impact on human health.

[0100] Reference Figures 1-2 Referring to, in some embodiments, at least a part of the protective cover 11 includes a transparent observation part 111. The observation part 111 is provided with an operation hole 112. The pole piece rolling equipment 100 further includes a glove device 20. The glove device 20 is installed in the operation hole 112. The glove device 20 includes a glove box body 21 and gloves arranged inside the glove box body 21. The glove box body 21 is used to open and close the operation hole 112.

[0101] At least a part of the protective cover 11 includes a transparent observation part 111. For example, it can be that a part of the protective cover 11 includes a transparent observation part 111, or each protective cover 11 includes a transparent observation part 111. Through the transparent observation part 111, it is convenient to observe the working state of the processing component 12 inside the protective cover 11 and the processing situation of the pole piece 200.

[0102] For example, the glove device 20 can be arranged at a position where operation is frequently required, or can be arranged at a position where operation is not frequently required for emergencies. The glove device 20 can be arranged in the middle of the transparent observation part 111, or can be arranged at other positions that can be observed through the transparent part.

[0103] The material of the gloves can be rubber, composite materials, etc. with good sealing performance, and the length of the gloves can be an appropriate length to meet the actual operation needs.

[0104] In the above technical solution, by making at least part of the protective cover 11 have a transparent observation part 111, it is convenient for personnel to observe the processing situation of the electrode plate 200 inside the protective cover 11 through the observation part 111. And by setting the glove device 20, when a roll pressing failure of the electrode plate 200 occurs, etc., the staff can wear the gloves in the glove box body 21 and then operate, reducing or avoiding the adverse effects on the human body caused by direct contact between the human body and the electrode plate 200. And by setting the transparent observation part 111, when the staff operates inside the electrode plate roll pressing device 100, it is convenient to observe the inside of the electrode plate roll pressing device 100, facilitating the staff to carry out relevant operations.

[0105] In some embodiments, the glove box body 21 includes a connected box cover 22 and a box seat 24. The box seat 24 is installed on the operation hole 112. The box seat 24 has a receiving cavity, a first open mouth, and a second open mouth. The gloves are located in the receiving cavity. The first open mouth is located on the side of the receiving cavity close to the inside of the protective cover 11, and the second open mouth is located on the side of the receiving cavity close to the outside of the protective cover 11. The box cover 22 is used to open or close the second open mouth.

[0106] When the gloves are needed, the box cover 22 can be opened, the hand can be inserted into the receiving cavity in the box seat 24 through the second open mouth, the hand can be put into the gloves, and the hand can be inserted into the protective cover 11 through the first open mouth to operate on the processing component 12 or the electrode plate 200; after use, the hand is taken out of the gloves, and the box cover 22 is closed.

[0107] In the above technical solution, by setting the glove box body 21 to include the box cover 22 and the box seat 24, and by installing the box seat on the operation hole 112 on the observation part 111, it is convenient for the installation of the glove box body 21. By setting the box seat 24 to have a receiving cavity and a first open mouth and a second open mouth located on both sides of the receiving cavity, the gloves are located in the receiving cavity, which is convenient for glove storage. By covering the box cover 22 on the second open mouth, it is convenient for the opening and closing of the glove box body 21, facilitating the operator to take the gloves. The staff can insert the hand into the gloves through the second open mouth. When in use, the staff inserts the hand into the glove box to operate, and inserts the hand into the protective cover 11 through the first open mouth to perform relevant operations on the inside of the equipment. After the operation is completed, the staff takes out the hand, and the gloves are left in the receiving cavity, increasing the operation convenience and the airtightness of the equipment.

[0108] Reference Figures 4-7 In some embodiments, a seal 26 is provided between the outer peripheral wall of the box seat 24 and the inner peripheral wall of the operation hole 112.

[0109] For example, the material of the seal 26 can be rubber, plastic, or composite materials with good elasticity and stability, etc.

[0110] In the above technical solution, by providing a seal 26 between the outer peripheral wall of the housing base 24 and the inner peripheral wall of the operation hole 112, the seal 26 can seal the gap between the outer peripheral wall of the housing base and the inner peripheral wall of the operation hole 112, increasing the airtightness of the pole piece rolling equipment 100 and reducing the leakage of exhaust gas inside the protective cover 11.

[0111] In some embodiments, the lid 22 is rotatable relative to the housing base 24 to open or close the second open opening.

[0112] When the second open opening needs to be opened, the lid 22 separates from the housing base 24 in a flipping manner; when the second open opening needs to be closed, the lid 22 closes with the housing base 24 in a flipping manner.

[0113] In the above technical solution, by making the lid 22 rotate relative to the housing base 24 to open or close the second open opening, it is convenient for the opening and closing operations of the lid 22, making the opening and closing operations of the lid 22 more convenient.

[0114] Reference Figures 4-7 , in some embodiments, a latch 25 is provided on the housing base 24, and a locking member 23 is provided on the lid 22. The locking member 23 is detachably engaged with the latch 25. When the locking member 23 is engaged with the latch 25, the lid 22 is in a locked state. When the locking member 23 is disengaged from the latch 25, the lid 22 is in an unlocked state and the lid 22 is rotatable relative to the housing base 24.

[0115] According to the actual operation requirements, the lid 22 can be in a locked state or an unlocked state through the cooperation of the locking member 23 and the latch 25.

[0116] In the above technical solution, by providing a latch 25 on the housing base 24 and a locking member 23 on the lid 22, the lid 22 is in a locked state through the cooperation of the locking member 23 and the latch 25 when in the closed state, which can reduce the leakage of exhaust gas inside the protective cover 11 caused by the lid 22 not being closed properly.

[0117] In some embodiments, the locking member 23 includes a handle 231 and a lock ring 233. The lock ring 233 is connected to the handle 231. The handle 231 is rotatably connected to the lid 22. The handle 231 is rotatable relative to the lid 22 between a first position and a second position. When the handle 231 is in the first position, the lock ring 233 is hung on the latch 25. When the handle 231 is in the second position, the lock ring 233 is disengaged from the latch 25.

[0118] According to the actual operation requirements, by rotating the handle 231, the locking ring 233 and the lock catch 25 can be controlled to cooperate with each other, so that the lid 22 is in a locked state or an unlocked state.

[0119] When the handle 231 is in the first position, the locking ring 233 is hung on the lock catch 25, realizing the cooperation between the locking member 23 and the lock catch 25. At this time, the lid 22 is in a locked state. When the handle 231 is in the second position, the locking ring 233 is disengaged from the lock catch 25, realizing the disengagement between the locking member 23 and the lock catch 25. At this time, the lid 22 is in an unlocked state.

[0120] Among them, when the handle 231 is in the first position, the handle 231 can be kept in the first position by the frictional force between the handle 231 and the structures such as the lid 22, or the handle 231 can be fixed in the first position by a fixing member.

[0121] In the above technical solution, by setting the locking member 23 to include the handle 231 and the locking ring 233, the connection or disconnection between the locking ring 233 and the lock catch 25 is realized by rotating the handle 231, making the connection and separation operations between the locking member 23 and the lock catch 25 more convenient, reducing the complexity of the unlocking and locking processes, and facilitating the operation while locking the lid 22.

[0122] Reference Figures 4-6 , in some embodiments, one end of the handle 231 is rotatably connected to the lid 22, the other end of the handle 231 is a free end 232, and the free end 232 of the handle 231 is closer to the lid 22 when in the first position than when in the second position.

[0123] During the process of rotating the handle 231, the free end 232 of the handle 231 can be held by hand. When the handle 231 is rotated from the first position to the second position, the free end 232 of the handle 231 moves away from the lid 22, facilitating the unlocking of the lid 22; when the handle 231 is rotated from the second position to the first position, the free end 232 of the handle 231 approaches the lid 22, facilitating the locking of the lid 22 and also facilitating the storage of the handle 231 on one side of the lid 22.

[0124] In the above technical solution, when the lid 22 is in the closed position, making the free end 232 of the handle 231 closer to the lid 22 can make the handle 231 be stored on one side of the lid 22, making the structure of the glove device 20 compact.

[0125] Reference Figure 8 and Figure 9, in some embodiments, the multiple processing units 10 include a thickness measuring unit 50 and a quality inspection unit 70. The thickness measuring unit 50 is used to measure the thickness of the electrode sheet 200. The thickness measuring unit 50 is located between the rolling unit 40 and the quality inspection unit 70, and the quality inspection unit 70 is located between the thickness measuring unit 50 and the material receiving unit 80. The processing component 12 of the quality inspection unit 70 includes a coding mechanism 73, and the processing component 12 of the thickness measuring unit 50 includes a thickness gauge 51. The coding mechanism 73 is electrically connected to the thickness gauge 51, and the coding mechanism 73 is used to mark the defective electrode sheet 200.

[0126] For example, after the electrode sheet 200 is rolled by the rolling unit 40, it enters the thickness measuring unit 50 to measure the thickness of the rolled electrode sheet 200. The thickness gauge 51 of the measuring unit measures the thickness of the electrode sheet 200, and then it can enter the quality inspection unit 70 for quality inspection. When the thickness measuring unit 50 in the previous process detects that the thickness of the electrode sheet 200 does not meet the requirements, the coding mechanism 73 of the quality inspection unit 70 can code and mark the defective electrode sheet 200, and finally the material is received through the material receiving unit 80.

[0127] Among them, the coding method of the coding mechanism 73 can be laser coding or other coding methods.

[0128] For example, the processing component 12 of the quality inspection unit 70 can also include a coding mechanism 75. In the transmission direction of the electrode sheet 200, the coding mechanism 75 can be located on the downstream side of the coding. The coding mechanism 75 can code the electrode sheet 200. In the above technical solution, by setting the thickness measuring unit 50 and the thickness measuring unit 50 is arranged between the rolling unit 40 and the quality inspection unit 70, the thickness of the electrode sheet 200 can be measured, so as to monitor the thickness of the rolled electrode sheet 200. By setting the quality inspection unit 70 and the coding mechanism 73 of the quality inspection unit 70 is electrically connected to the thickness gauge 51 of the thickness measuring unit 50, when the thickness gauge 51 of the thickness measuring unit 50 detects that the thickness of the rolled electrode sheet 200 does not meet the requirements, the coding mechanism 73 of the quality inspection unit 70 can code and mark the defective electrode sheet 200 with unqualified thickness, which is convenient for monitoring the quality of the electrode sheet 200.

[0129] Reference Figure 8 , in some embodiments, the multiple processing units 10 include a heating unit 60. The heating unit 60 is arranged between the rolling unit 40 and the material receiving unit 80, and the heating unit 60 is used to heat the electrode sheet 200.

[0130] For example, after the electrode sheet 200 is rolled by the rolling unit 40, it enters the heating unit 60 for heating the electrode sheet 200, which can eliminate the residual stress of the electrode sheet 200. Heating the electrode sheet 200 by the heating unit 60 can also reduce the moisture in the electrode sheet 200. For example, when producing the electrode sheet 200 for a solid-state battery, it is beneficial to quickly meet the production requirements of the solid-state battery for the electrode sheet 200.

[0131] Among them, the processing component 12 of the heating unit 60 may include an oven 61 or other devices with heating functions. The heating power and heating time of the heating unit 60 can be adjusted. For example, the heating time and temperature of the electrode sheet 200 can be adjusted according to the actual production requirements of the electrode sheet 200.

[0132] In the above technical solution, by setting the heating unit 60 and making the heating unit 60 located between the rolling unit 40 and the material receiving unit 80, the rolled electrode sheet 200 can be heated, which is beneficial to quickly eliminate the residual stress of the rolled electrode sheet 200, accelerate the thickness rebound of the electrode sheet 200, and reduce the situations such as large thickness rebound of the electrode sheet 200 during subsequent winding and transportation, resulting in winding bulging and deformation, and cracking of the electrode sheet 200, which seriously affect the battery life and safety. In addition, by heating the electrode sheet 200, the heating unit 60 can also reduce the moisture in the electrode sheet 200. For example, when producing the electrode sheet 200 for a solid-state battery, it is beneficial to quickly meet the production requirements of the solid-state battery for the electrode sheet 200.

[0133] Reference Figure 8 and Figure 9 , in some embodiments, the multiple processing units 10 include a thickness measuring unit 50 and a quality inspection unit 70. The thickness measuring unit 50 is used to measure the thickness of the electrode sheet 200. The thickness measuring unit 50 is located between the rolling unit 40 and the heating unit 60, and the quality inspection unit 70 is located between the heating unit 60 and the material receiving unit 80. The processing component 12 of the quality inspection unit 70 includes a coding mechanism 73, and the processing component 12 of the thickness measuring unit 50 includes a thickness gauge 51. The coding mechanism 73 is electrically connected to the thickness gauge 51, and the coding mechanism 73 is used to mark the defective electrode sheet 200.

[0134] For example, after the electrode sheet 200 is rolled by the rolling unit 40, it enters the thickness measuring unit 50 to measure the thickness of the rolled electrode sheet 200. After the thickness of the electrode sheet 200 is measured, it enters the heating unit 60 to heat the electrode sheet 200 to eliminate the residual stress of the electrode sheet 200. Finally, it enters the quality inspection unit 70 for quality inspection. When the thickness measuring unit 50 in the previous process detects that the thickness of the electrode sheet 200 does not meet the requirements, the coding mechanism 73 of the quality inspection unit 70 can code and mark the defective electrode sheet 200, and finally the material is received through the material receiving unit 80.

[0135] In the above technical solution, by providing the thickness measuring unit 50 and arranging the thickness measuring unit 50 between the rolling unit 40 and the heating unit 60, the thickness of the electrode sheet 200 can be measured, so that the thickness of the electrode sheet 200 after rolling can be monitored. After the electrode sheet 200 is rolled by the rolling unit 40 and the thickness is detected by the thickness measuring unit 50, it is heated by the heating unit 60, which is beneficial to quickly eliminate the residual stress of the rolled electrode sheet 200, accelerate the thickness springback of the electrode sheet 200, and reduce the large thickness springback of the electrode sheet 200 during subsequent winding and transportation, which may cause serious problems such as winding bulge deformation and cracking of the electrode sheet 200, seriously affecting the battery life and safety. In addition, by heating the electrode sheet 200, the heating unit 60 can also reduce the moisture in the electrode sheet 200. For example, when producing the electrode sheet 200 for a solid-state battery, it is beneficial to quickly meet the production requirements of the solid-state battery for the electrode sheet 200.

[0136] Moreover, by providing the quality inspection unit 70 and electrically connecting the coding mechanism 73 of the quality inspection unit 70 to the thickness gauge 51 of the thickness measuring unit 50, when the thickness gauge 51 of the thickness measuring unit 50 detects that the thickness of the electrode sheet 200 after rolling does not meet the requirements, the coding mechanism 73 of the quality inspection unit 70 can mark the defective electrode sheet 200 with non-compliant thickness, facilitating the monitoring of the quality of the electrode sheet 200.

[0137] Reference Figure 9 , in some embodiments, the plurality of processing units 10 include a quality inspection unit 70. The quality inspection unit 70 is located between the rolling unit 40 and the material receiving unit 80. The processing component 12 of the quality inspection unit 70 includes a coding mechanism 73 and a visual inspection system 71. In the transmission direction of the electrode sheet 200, the coding mechanism 73 is located on the downstream side of the visual inspection system 71. The coding mechanism 73 is electrically connected to the visual inspection system 71. The visual inspection system 71 is used to detect whether there are defects on the appearance of the electrode sheet 200, and the coding mechanism 73 is used to mark the defective positions of the electrode sheet 200.

[0138] Among them, the coding method of the coding mechanism 73 can be laser coding or other coding methods. The operation of the coding mechanism 73 is based on the result of the visual inspection system 71 electrically connected to the coding mechanism 73. When there are no defects on the electrode sheet 200, the coding mechanism 73 does not work; when there are defects on the electrode sheet 200, the coding mechanism 73 marks the defective positions of the electrode sheet 200.

[0139] In the above technical solution, by providing the quality inspection unit 70, and the quality inspection unit 70 includes a coding mechanism 73 and a vision inspection system 71. The coding mechanism 73 is arranged on the downstream side of the vision inspection system 71. The vision inspection system 71 can detect whether there are defects on the appearance of the electrode sheet 200 by taking pictures or other means. If there are defects, the coding mechanism 73 will make a coding mark at the defective position of the electrode sheet 200, avoiding or reducing the inflow of defective electrode sheets 200 into the subsequent processes, which is beneficial to improving the production quality of the battery.

[0140] Reference Figure 9 , in some embodiments, the vision inspection system 71 includes two cameras 711, and the two cameras 711 are arranged on opposite sides in the thickness direction of the electrode sheet 200.

[0141] In the above technical solution, by making the vision inspection system 71 include two cameras 711 in different directions, the appearance inspection range of the vision inspection system 71 for the electrode sheet 200 is increased, so that the surfaces on both sides in the thickness direction of the electrode sheet 200 can be detected by the vision inspection system 71 for whether there are defects on the appearance, which is beneficial to accurately and quickly screening out defective electrode sheets 200 and is beneficial to improving the production quality of the battery.

[0142] Reference Figure 9 , in some embodiments, the quality inspection unit 70 further includes a dust suction mechanism 74, and the dust suction mechanism 74 includes a dust suction pipe 741, and the suction port 742 of the dust suction pipe 741 is adjacent to the position on the electrode sheet 200 corresponding to the coding mechanism 73.

[0143] The dust suction mechanism 74 can be linked with the coding mechanism 73. For example, when the coding mechanism 73 is working, the dust suction mechanism 74 also works, so as to remove the powder impurities generated during the working process of the coding mechanism 73. When the coding mechanism 73 is not working, the dust suction mechanism 74 does not work either, saving energy consumption.

[0144] In the above technical solution, by making the quality inspection unit 70 include a dust suction mechanism 74, and making the suction port 742 of the dust suction pipe 741 of the dust suction mechanism 74 adjacent to the position on the electrode sheet 200 corresponding to the coding mechanism 73, the powder impurities generated during the coding of the coding mechanism 73 in the previous process can be sucked out, improving the cleanliness during the production of the electrode sheet 200 and reducing the defects of the electrode sheet 200 caused by impurities.

[0145] Reference Figure 9 , in some embodiments, the processing component 12 of the quality inspection unit 70 further includes a cooling fan 72, and the cooling fan 72 is used to blow air flow to the position on the electrode sheet 200 opposite to the vision inspection system 71.

[0146] For example, the cooling fan 72 may include two sets, which respectively blow air currents to both sides of the pole piece 200 in the thickness direction, so as to achieve the effect of reducing the temperature at the position opposite to the visual inspection system 71.

[0147] In the above technical solution, by making the quality inspection unit 70 include the cooling fan 72 and making the cooling fan 72 blow air currents to the position on the pole piece 200 opposite to the visual inspection system 71, the air temperature near the pole piece 200 can be reduced, and the error generated during the shooting of the camera 711 of the visual inspection system 71 due to the relatively high temperature of the air near the pole piece 200 can be reduced, which is beneficial to improving the photographing quality of the camera 711 for the pole piece 200, so as to better identify the defect position.

[0148] The following refers to Figures 1-9 Describe the pole piece rolling equipment 100 according to some embodiments of the present invention.

[0149] Refer to Figures 1-4 , in this embodiment, a plurality of processing units 10 are arranged in sequence along the first direction. The plurality of processing units 10 include a feeding unit 30, a rolling unit 40, a thickness measuring unit 50, a heating unit 60, a quality inspection unit 70, a material receiving unit 80, etc. Each processing unit 10 includes a protective cover 11 and a processing component 12. The protective cover 11 covers the outside of the corresponding processing component 12. The protective cover 11 is provided with a perforation for the pole piece 200 to pass through. The protective cover 11 of the processing unit 10 is connected with an air extraction and exhaust system 13. The air extraction and exhaust system 13 includes an air extraction pipe 131 and an air inlet pipe 132. The air extraction pipe 131 and the air inlet pipe 132 are respectively connected with the protective cover 11. Pressure gauges, harmful gas detectors and other instruments are arranged in the protective cover 11 connected with the air extraction and exhaust system 13. Some protective covers 11 include a transparent observation part 111, and the observation part 111 is provided with an operation hole 112.

[0150] Refer to Figures 5-8, the electrode sheet rolling equipment 100 further includes a glove device 20. The glove device 20 is installed in the operation hole 112. The glove device 20 includes a glove box body 21 and gloves arranged inside the glove box body 21. The glove box body 21 includes a connected box cover 22 and a box seat 24. The box seat 24 is installed in the operation hole 112. The box seat 24 has a receiving cavity, a first open opening, and a second open opening. The gloves are located in the receiving cavity. The first open opening is located on the side of the receiving cavity close to the inside of the protective cover 11, and the second open opening is located on the side of the receiving cavity close to the outside of the protective cover 11. A seal 26 is provided between the outer peripheral wall of the box seat 24 and the inner peripheral wall of the operation hole 112. The box cover 22 is flipable relative to the box seat 24 to open or close the second open opening. A lock catch 25 is provided on the box seat 24, and a locking member 23 is provided on the box cover 22. The locking member 23 is detachably engaged with the lock catch 25. The locking member 23 includes a handle 231 and a lock ring 233. The lock ring 233 is connected to the handle 231. The handle 231 is rotatably connected to the box cover 22. The handle 231 is rotatable relative to the box cover 22 between a first position and a second position.

[0151] Reference Figure 9 , the quality inspection unit 70 includes a coding mechanism 73 and a vision inspection system 71. The vision inspection system 71 includes two cameras 711. The quality inspection unit 70 includes a dust suction mechanism 74. The suction port 742 of the dust suction pipe 741 is adjacent to the position on the electrode sheet 200 corresponding to the coding mechanism 73. The dust suction mechanism 74 includes a dust suction pipe 741. The processing component 12 of the quality inspection unit 70 includes a cooling fan 72.

[0152] When the electrode sheet rolling equipment 100 is operating normally, the electrode sheet 200 is released from the unwinding mechanism 31 of the feeding unit 30. The released electrode sheet 200 is unwound in the stretching mechanism 32 and then enters the rolling unit 40 for rolling. After the electrode sheet 200 is rolled, it enters the thickness measurement unit 50 to measure the thickness after rolling, and then enters the heating unit 60 to eliminate residual stress. After the electrode sheet 200 is heat-treated, it enters the quality inspection unit 70 for quality inspection. When there are defects on the electrode sheet 200, the vision inspection system 71 identifies the defects through the cameras 711, and the coding mechanism 73 marks the defect positions of the electrode sheet 200. Finally, the electrode sheet 200 is wound out through the winding unit 80. When the electrode sheet 200 enters and exits different processing units 10, it passes through the perforations on the protective cover 11, and the exhaust system 13 maintains exhaust and discharges harmful gases.

[0153] When there is an abnormality inside the pole piece rolling equipment 100 or with the pole piece 200, the staff can observe the situation inside the equipment through the transparent observation part 111. After confirming the position that needs to be operated, the staff opens the box cover 22, reaches the hand into the accommodation cavity inside the box base 24 through the second open opening, puts the hand into the glove, and operates on the problem part. After the operation is completed, the staff takes the hand out of the glove box body 21, closes the box cover 22 and turns the handle 231 to lock the lock catch 25.

[0154] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0155] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pole piece rolling device, characterized in that: It includes a plurality of processing units arranged in sequence along a first direction, each of the processing units includes a protective cover and a processing component, the protective cover is arranged on the outside of the corresponding processing component, the protective cover is provided with a through hole for the pole piece to pass through, and the protective cover of at least some of the processing units is connected to an exhaust system. The plurality of processing units include a feeding unit, a rolling unit and a receiving unit arranged in sequence along the first direction, the rolling unit is used to roll the pole piece, the feeding unit is used to feed the rolling unit, and the receiving unit is used to receive the pole piece processed by the rolling unit.

2. The pole piece rolling equipment according to claim 1, characterized in that: The exhaust system includes an exhaust pipe and an air intake pipe. The exhaust pipe is connected to the protective cover and is used to exhaust the gas in the protective cover. The air intake pipe is connected to the protective cover and is used to replenish gas into the protective cover.

3. The pole piece rolling equipment according to claim 1, characterized in that: A differential pressure gauge is provided in the protective cover connected to the exhaust system, and the differential pressure gauge is used to monitor the air pressure in the protective cover, and the differential pressure gauge is electrically connected to the exhaust pump of the exhaust system; and / or, a harmful gas detector is provided in the protective cover connected to the exhaust system, and the harmful gas detector is electrically connected to the exhaust pump of the exhaust system.

4. The pole piece rolling equipment according to claim 1, characterized in that: At least part of the protective cover includes a transparent observation portion, which is provided with an operating hole. The pole piece rolling equipment also includes a glove device, which is installed in the operating hole. The glove device includes a glove box and gloves arranged in the glove box, and the glove box is used to open and close the operating hole.

5. The pole piece rolling equipment according to claim 4, characterized in that: The glove box body includes a connected box cover and a box seat, the box seat is installed on the operating hole, the box seat has a accommodating cavity and a first opening and a second opening, the glove is located in the accommodating cavity, the first opening is located on a side of the accommodating cavity close to the inside of the protective cover, the second opening is located on a side of the accommodating cavity close to the outside of the protective cover, and the box cover is used to open or close the second opening.

6. The pole piece rolling equipment according to claim 5, characterized in that: A sealing member is provided between the outer peripheral wall of the box seat and the inner peripheral wall of the operation hole.

7. The pole piece rolling equipment according to claim 5, characterized in that: The box cover can be turned over relative to the box seat to open or close the second opening.

8. The pole piece rolling equipment according to claim 7, characterized in that: A lock catch is provided on the box seat, and a locking piece is provided on the box cover. The locking piece and the lock catch can be detachably matched. When the locking piece and the lock catch are matched, the box cover is in a locked state. When the locking piece and the lock catch are disengaged, the box cover is in an unlocked state and can be flipped relative to the box seat.

9. The pole piece rolling equipment according to claim 8, characterized in that: The locking member includes a handle and a locking ring, wherein the locking ring is connected to the handle, and the handle is rotatably connected to the box cover. The handle is rotatable relative to the box cover between a first position and a second position. When the handle is located at the first position, the locking ring is hung on the lock buckle, and when the handle is located at the second position, the locking ring is disengaged from the lock buckle.

10. The pole piece rolling equipment according to claim 9, characterized in that: One end of the handle is rotatably connected to the box cover, and the other end of the handle is a free end. The free end of the handle is closer to the box cover when it is in the first position than when it is in the second position.

11. The pole piece rolling equipment according to any one of claims 1 to 10, characterized in that: The multiple processing units include a thickness measuring unit and a quality inspection unit. The thickness measuring unit is used to measure the thickness of the electrode. The thickness measuring unit is located between the rolling unit and the quality inspection unit. The quality inspection unit is located between the thickness measuring unit and the material receiving unit. The processing component of the quality inspection unit includes a coding mechanism. The processing component of the thickness measuring unit includes a thickness gauge. The coding mechanism is electrically connected to the thickness gauge. The coding mechanism is used to mark defective electrode sheets.

12. The pole piece rolling equipment according to any one of claims 1 to 10, characterized in that: The plurality of processing units include a heating unit, and the heating unit is disposed between the rolling unit and the receiving unit, and the heating unit is used to heat the pole piece.

13. The pole piece rolling equipment according to claim 12, characterized in that: The multiple processing units include a thickness measuring unit and a quality inspection unit. The thickness measuring unit is used to measure the thickness of the electrode. The thickness measuring unit is located between the rolling unit and the heating unit. The quality inspection unit is located between the heating unit and the material receiving unit. The processing component of the quality inspection unit includes a coding mechanism. The processing component of the thickness measuring unit includes a thickness gauge. The coding mechanism is electrically connected to the thickness gauge. The coding mechanism is used to mark defective electrode sheets.

14. The pole piece rolling equipment according to any one of claims 1 to 10, characterized in that: The multiple processing units include a quality inspection unit, which is located between the rolling unit and the material receiving unit. The processing components of the quality inspection unit include a coding mechanism and a visual inspection system. In the transmission direction of the electrode, the coding mechanism is located on the downstream side of the visual inspection system. The coding mechanism is electrically connected to the visual inspection system. The visual inspection system is used to detect whether there are defects in the appearance of the electrode, and the coding mechanism is used to mark the defect position of the electrode.

15. The pole piece rolling equipment according to claim 14, characterized in that: The visual inspection system includes two cameras, and the two cameras are arranged on opposite sides of the pole piece in the thickness direction.

16. The pole piece rolling equipment according to claim 14, characterized in that: The quality inspection unit further comprises a dust suction mechanism, which comprises a dust suction pipe, wherein a suction port of the dust suction pipe is adjacent to a position on the pole piece corresponding to the coding mechanism.

17. The pole piece rolling equipment according to claim 14, characterized in that: The processing component of the quality inspection unit also includes a cooling fan, and the cooling fan is used to blow air flow to the position on the pole piece opposite to the visual inspection system.

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