Pole piece rolling equipment and battery production system

Abstract

The embodiment of the utility model provides pole piece rolling equipment and a battery production system, and relates to the technical field of batteries. The pole piece rolling equipment comprises a bearing seat, a bearing piece, a roller and an air cooling device, the bearing seat is provided with an air cooling channel, the air cooling channel is provided with an air inlet and an air outlet, the bearing piece is installed on the bearing seat, and the roller is coaxially connected to the bearing piece; the air cooling device communicates with the air inlet and is used for blowing air cooling airflow into the air cooling channel. Different from a water cooling structure in the related technology, the air cooling channel is arranged in the bearing seat, and the air cooling device is used for blowing air cooling airflow into the air cooling channel, so that the temperature of the bearing seat is reduced, the bearing seat, a bearing part and the like can be cooled, the risk of water leakage is reduced or even eliminated, and the service life of the bearing seat is prolonged. Therefore, the operation safety of the equipment is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to a pole piece rolling device and a battery production system. Background Art

[0002] In the production process of battery devices, pole piece rolling equipment is needed to roll the pole pieces to improve the overall performance of the battery device. During the rolling process, the bearing seat of the roller of the roller press will increase in temperature during the operation of the bearing, which will have an adverse effect on the service life of the bearing and the rolling quality.

[0003] In the related technology, a water cooling structure is used to cool the bearing seat, which has safety risks such as water leakage and is prone to cause safety accidents. Therefore, how to improve the safety performance of the bearing seat cooling device is a research direction in battery technology. Utility Model Content

[0004] The present application provides a pole piece rolling device and a battery production system, which can improve the safety performance of the bearing seat cooling structure.

[0005] In the first aspect, an embodiment of the present application provides a pole piece rolling equipment, including a bearing seat, a bearing member, a rolling roller and an air cooling device, the bearing seat is provided with an air cooling channel, the air cooling channel has an air inlet and an exhaust port for connecting to the atmosphere, the outer ring portion of the bearing member is installed on the bearing seat, and the rolling roller is coaxially connected to the inner ring portion of the bearing member; the air cooling device is connected to the air inlet and is used to blow air cooling air into the air cooling channel.

[0006] The above technical solution is different from the water cooling structure in the related technology. An air cooling channel is provided in the bearing seat. An air cooling device is used to blow air cooling air into the air cooling channel to reduce the temperature of the bearing seat. This not only cools the bearing seat and bearing parts, but also reduces or even eliminates the risk of water leakage, thereby improving the safety of equipment operation.

[0007] In some embodiments of the present application, the air cooling device includes an air cooling mechanism, and the air cooling mechanism is provided with an air inlet, a hot air outlet and a cold air outlet, and the cold air outlet is connected to the air inlet.

[0008] By adopting the above technical scheme, the air cooling device is designed to include a refrigeration structure. Air enters the air refrigeration mechanism through the air inlet for refrigeration treatment. Part of the air enters the air inlet through the cold air outlet after refrigeration, and the other part of the air forms hot air after heat exchange and is discharged through the hot air outlet, forming a refrigeration cycle with good refrigeration effect.

[0009] In some embodiments of the present application, the air cooling mechanism includes a vortex tube, one end of the vortex tube is provided with the hot air outlet, the other end is provided with the cold air outlet, the tube wall of the vortex tube is provided with the air inlet, and the vortex tube is provided with a vortex cavity for forming the airflow entering the air inlet into a vortex, and the vortex cavity is respectively connected to the air inlet, the hot air outlet and the cold air outlet.

[0010] By adopting the above technical scheme, the vortex principle of the vortex tube is used for refrigeration. The air flow expands and accelerates in the vortex cavity to form a high-speed rotating vortex, which causes friction between the inner and outer circle vortices due to different angular velocities. The temperature of the inner circle vortex decreases and the temperature of the outer circle vortex increases, thereby separating the cold and hot air flows. The cold air outlet can discharge the low-temperature airflow, while the hot air outlet discharges the high-temperature airflow. There are no mechanical moving parts in the entire refrigeration process, and the structure is simple, the operation is reliable and easy to control.

[0011] In some embodiments of the present application, the air cooling mechanism further includes a regulating valve, which is installed at the hot air outlet and is used to adjust the exhaust volume of the hot air outlet.

[0012] By adopting the above technical solution, a regulating valve is arranged at the hot air outlet, and the regulating valve is used to control the discharge volume of the hot air outlet, so that the air outlet temperature of the cold air outlet can be controlled.

[0013] In some embodiments of the present application, the air cooling device further includes an air compression mechanism, which is connected to the air inlet and is used to input compressed air into the air inlet.

[0014] By adopting the above technical solution, the air compressor can input compressed air into the vortex tube through the air inlet, and the compressed air can expand rapidly and produce a cooling effect, thereby achieving rapid cooling and improving refrigeration efficiency.

[0015] In some embodiments of the present application, the air cooling device includes a switch component, which is respectively connected to the air compression mechanism and the air inlet, and is used to open and close the air intake of the air compression mechanism to the air inlet.

[0016] By adopting the above technical solution, the switch member is used to open or close the air intake of the air compressor mechanism to the air inlet, so that the air intake of the compressed air can be controlled.

[0017] In some embodiments of the present application, the pole piece rolling equipment further includes a first mounting member, the first mounting member is connected to the bearing seat, and the vortex tube and the switch member are both mounted on the first mounting member.

[0018] By adopting the above technical solution, the air cooling device is designed to include a first mounting member, and the first mounting member can be used to integrate and mount the vortex tube and the switch member, thereby achieving fixation of the vortex tube and the switch member and improving the stability of both.

[0019] In some embodiments of the present application, the air cooling channel is disposed around at least a portion of the bearing component.

[0020] By adopting the above technical solution, the air cooling channel is arranged around at least a part of the bearing component, so that the temperature of the bearing component can be transferred to the air cooling channel more quickly through the bearing seat, thereby achieving faster cooling of the bearing seat and the bearing component.

[0021] In some embodiments of the present application, the air inlet and the air outlet are located on the same side of the bearing seat in the radial direction of the bearing member.

[0022] By adopting the above technical solution, the air inlet and the exhaust port are designed to be located on the same side of the bearing seat, which can increase the area of ​​the air cooling channel surrounding the bearing component, thereby providing a better cooling effect for the bearing component.

[0023] In some embodiments of the present application, the pole piece rolling equipment further includes a pressure detection component, which is connected to the air cooling device or the air cooling channel and is used to detect air flow pressure.

[0024] By adopting the above technical solution, the pressure detection component can be used to detect and monitor the pressure of the air-cooling airflow of the air-cooling device. When the pressure fluctuates greatly or deviates greatly from the preset value, it can be judged that the air-cooling device or the air-cooling channel has a fault, so that timely processing can be carried out, which can improve the stability of the refrigeration function of the equipment to a certain extent.

[0025] In some embodiments of the present application, the pole piece rolling equipment further includes a flow detection component, which is connected to the air cooling device or the air cooling channel and is used to detect the air flow rate.

[0026] By adopting the above technical solution, the flow detection device can be used to detect and monitor the flow of the air-cooling airflow in the air-cooling channel. When the flow fluctuates greatly or deviates greatly from the preset value, it can be judged that the air-cooling device or the air-cooling channel has a fault, so that timely processing can be carried out, which can improve the stability of the equipment's refrigeration function operation to a certain extent.

[0027] In some embodiments of the present application, the pole piece rolling equipment further includes a temperature detection element, which is mounted on the bearing seat and is used to detect the temperature of the bearing seat.

[0028] By adopting the above technical solution, the temperature of the bearing seat can be detected and monitored by the temperature detection element, so as to promptly open the air cooling device for cooling or to warn of operating failures of the air cooling device.

[0029] In some embodiments of the present application, the pole piece rolling equipment further includes a control component, and the control component is communicatively connected to the temperature detection component and the air cooling device respectively.

[0030] By adopting the above technical solution, the control component is communicatively connected with the temperature detection component and the air cooling device respectively. The control component can adaptively open and close the air cooling device or adjust the operating power of the air cooling device according to the temperature of the bearing seat detected by the temperature detection component.

[0031] In some embodiments of the present application, the pole piece rolling equipment further includes a second mounting member, the second mounting member is connected to the bearing seat, and the temperature detection member and the control assembly are both mounted on the second mounting member.

[0032] By adopting the above technical solution, the second mounting member is used to not only facilitate the installation of the temperature detection member and the control component, but also realize the integrated installation of the temperature detection member and the control component without the need to configure separate mounting structures for the two.

[0033] In a second aspect, an embodiment of the present application provides a battery production system, comprising a pole piece rolling device as described in any one of the above technical solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the structure of a pole piece rolling device provided in some embodiments of the present application at a first viewing angle;

[0036] Figure 2 A schematic diagram of the structure of a pole piece rolling device provided in some embodiments of the present application at a second viewing angle;

[0037] Figure 3 A schematic diagram of the structure of a vortex tube provided in some embodiments of the present application;

[0038] Figure 4 for Figure 3 AA cross-section diagram;

[0039] Figure 5A schematic diagram of the structure of a first mounting member and a structure thereon provided for some implementations of the present application;

[0040] Figure 6 A schematic diagram of the structure of a second mounting member and a structure thereon provided for some implementations of the present application;

[0041] Figure 7 A refrigeration flow diagram of a pole piece rolling device provided for some implementations of this application.

[0042] The reference numerals of the specific embodiments are as follows:

[0043] 1. Pole piece rolling equipment;

[0044] 10. Bearing seat; 11. Air cooling channel; 111. Air inlet; 112. Exhaust port;

[0045] 20. bearing member; 21. inner ring portion; 22. outer ring portion;

[0046] 30. Roller;

[0047] 40. air cooling device; 41. air cooling mechanism; 411. vortex tube; 4111. air inlet; 4112. hot air outlet; 4113. cold air outlet; 4114. vortex chamber; 4115. regulating valve; 4116. pipe clamp; 42. switch member; 43. air compressor mechanism;

[0048] 50. First mounting part; 60. Pressure detecting part; 70. Flow detecting part; 80. Temperature detecting part; 90. Control component; 100. Second mounting part. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0050] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application 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 the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0051] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places 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.

[0052] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] The term "and / or" in this application 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 at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0054] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0055] The term “plurality” used in this application refers to two or more (including two).

[0056] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a battery box for encapsulating one or more battery cells. The battery box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0057] The battery cells mentioned in the embodiments of the present application may be lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells or magnesium-ion battery cells, etc., which are not limited in the embodiments of the present application. The battery cells may be cylindrical, flat, cuboid or other shapes, which are not limited in the embodiments of the present application.

[0058] The battery cell mentioned in the embodiments of the present application may include an electrode assembly and an electrolyte, and the electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive current collector and a positive active material layer, and the positive active material layer is coated on the surface of the positive current collector; the positive current collector includes a positive electrode coating area and a positive electrode ear connected to the positive electrode coating area, the positive electrode coating area is coated with a positive electrode active material layer, and the positive electrode ear is not coated with a positive electrode active material layer. Taking a lithium-ion battery cell as an example, the material of the positive current collector can be aluminum, and the positive electrode active material layer includes a positive electrode active material, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector; the negative electrode current collector includes a negative electrode coating area and a negative electrode tab connected to the negative electrode coating area, and the negative electrode coating area is coated with a negative electrode active material layer, and the negative electrode tab is not coated with a negative electrode active material layer. The material of the negative electrode current collector can be copper, and the negative electrode active material layer includes a negative electrode active material, and the negative electrode active material can be carbon or silicon, etc. The material of the separator can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.

[0059] The battery cells described in the embodiments of the present application are suitable for batteries and electrical devices using batteries. Electrical devices may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and electric tools, etc. Vehicles may be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0060] Below, the embodiments of the present application are described in detail.

[0061] At present, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0062] During the rolling process of battery pole pieces, the bearing seat of the main roller system will increase in temperature during the operation of the bearing parts, and the temperature of the roller will increase through heat conduction. Thermal expansion affects the dimensional accuracy of the entire roller system structure, which will directly affect the rolling quality of the pole pieces and the service life of the bearings.

[0063] In order to solve the above problems, the related technology usually sets a water cooling circulation structure around the bearing seat, using cooling water to remove the heat of the bearing seat. However, there is a risk of water leakage in the cooling water channels and water channel joints of this structure, which can easily cause safety accidents.

[0064] Therefore, providing a pole piece rolling equipment with lower safety risks and the ability to simultaneously have a bearing seat cooling effect is an important issue in battery production and processing.

[0065] In view of this, the present application provides a technical solution, which solves the above technical problems by replacing water cooling with air cooling.

[0066] The following is combined with Figure 1-7 The pole piece rolling device 1 provided in the embodiment of the present application is introduced.

[0067] Combined with Figure 1 and 2As shown, a pole piece rolling equipment 1 includes a bearing seat 10, a bearing member 20, a roller 30 and an air cooling device 40. The bearing seat 10 is provided with an air cooling channel 11. The air cooling channel 11 has an air inlet 111 and an exhaust port 112 for connecting to the atmosphere. The outer ring portion 22 of the bearing member 20 is installed on the bearing seat 10, and the roller 30 is coaxially connected to the inner ring portion 21 of the bearing member 20; the air cooling device 40 is connected to the air inlet 111 and is used to blow air cooling air into the air cooling channel 11.

[0068] The bearing seat 10 is mainly used to support and fix the bearing and the roller 30, and its material can be made of metal materials such as cast iron or steel. The shape of the bearing seat 10 can be rectangular block, cylindrical, etc. This embodiment does not impose too many restrictions on this.

[0069] In order to install the bearing component 20, a mounting through hole is provided in the middle of the bearing seat 10 (not marked in the figure due to the obstruction of the bearing component 20), so that the bearing component 20 can be accurately installed therein.

[0070] The bearing member 20 may be a sliding bearing, a ball bearing, a roller bearing, a deep groove ball bearing, etc., which are not listed one by one in this embodiment.

[0071] In some embodiments, there are two bearing seats 10 , and the two bearing seats 10 are matched to install two bearing members 20 in a one-to-one correspondence, and the opposite ends of the roller 30 are connected to the two bearing members 20 in a one-to-one correspondence.

[0072] The bearing component 20 includes an inner ring portion 21 and an outer ring portion 22. The outer ring portion 22 is installed in the above-mentioned installation through hole. The inner ring portion 21 can be installed in the outer ring portion 22 around its own axial direction. The roller 30 is directly installed on the inner ring portion 21 and fixedly connected to the inner ring portion 21, so that the roller 30 can rotate synchronously with the inner ring portion 21.

[0073] The bearing seat 10 is provided with an air cooling channel 11, which can be understood as a chamber located inside the bearing seat 10 and having a certain structural length. Of course, the air cooling channel 11 can also be a pipe directly installed on the bearing seat 10 (this embodiment is not shown in the figure).

[0074] The air cooling device 40 can be understood as a device that uses air as a cooling medium to reduce the temperature of the device or system. The air cooling device 40 can be a cooling fan that can blow air into the air inlet 111, or it can be an air cooling structure that has a heat exchange effect and can generate cold air, such as an air cooler, a heat pipe cooler, and the vortex tube 411 described below.

[0075] Compared with the water cooling structure, the air cooling device 40 has at least the following advantages:

[0076] a. Simple structure. The design is usually simple and does not require complicated components such as water pumps, pipes and water tanks, making it easy to manufacture and maintain.

[0077] b. Easy to install. Since no water source is required, the installation location of the air cooling system is more flexible and can be used in any dry location, while the water cooling system often needs to consider water source and drainage.

[0078] c. Lower cost, because no additional water treatment equipment and pipelines are required, the production and maintenance costs are usually lower than water cooling systems.

[0079] d. Small space occupation: Air cooling system is usually small in size and occupies little space, which is suitable for applications with strict space requirements.

[0080] e. High safety: the air cooling system does not involve water storage and transportation, which reduces the risk of water leakage and flooding and improves operational safety.

[0081] Therefore, in view of the above-mentioned advantages of the air cooling device 40, this embodiment provides an air cooling channel 11 in the bearing seat 10, and utilizes the air cooling device 40 to blow air cooling air into the air cooling channel 11, thereby reducing the temperature of the bearing seat 10. This not only can cool the bearing seat 10 and the bearing component 20, but also reduces or even eliminates the risk of water leakage, thereby improving the safety of equipment operation.

[0082] It should be noted that the “axial direction” mentioned in this embodiment refers to the direction of the central axis of rotation of a cylinder such as the roller 30 , and the radial direction refers to the diameter or radius direction of a circular or annular structure such as the bearing 20 , and the radial direction is perpendicular to the axial direction.

[0083] In some examples, optionally, the air cooling device 40 includes an air cooling mechanism 41 , and the air cooling mechanism 41 is provided with an air inlet 4111 , a hot air outlet 4112 , and a cold air outlet 4113 , and the cold air outlet 4113 is connected to the air inlet 111 .

[0084] The air cooling mechanism 41 can be the above-mentioned air cooler, heat pipe cooler and the following vortex tube 411 and other cooling mechanisms. As long as they can meet the requirements of cooling the air and delivering the cooled air to the air inlet 111, they are all within the optional range of the air cooling mechanism 41 of this embodiment, and this embodiment will not list them one by one.

[0085] During cooling, air enters the air cooling mechanism 41 through the air inlet 4111 for cooling treatment. Part of the air enters the air inlet 111 through the cold air outlet 4113 after cooling, and the other part of the air forms hot air after heat exchange and is discharged through the hot air outlet 4112, forming a refrigeration cycle with a good cooling effect.

[0086] Combined with Figure 3 and attached Figure 4 As shown, in some examples, optionally, the air cooling mechanism 41 includes a vortex tube 411, a hot air outlet 4112 is provided at one end of the vortex tube 411, and a cold air outlet 4113 is provided at the other end, the tube wall of the vortex tube 411 is provided with an air inlet 4111, and the vortex tube 411 is provided with a vortex cavity 4114 for forming a vortex of the airflow entering through the air inlet 4111, and the vortex cavity 4114 is respectively connected to the air inlet 4111, the hot air outlet 4112 and the cold air outlet 4113.

[0087] The vortex tube 411 can be understood as a three-way tube structure, one end of which is provided with a cold air outlet 4113 and the other end is provided with a cold air inlet. An air inlet 4111 close to the cold air outlet 4113 is provided on the closed end of the vortex tube 411 .

[0088] Among them, the cold air outlet 4113 can be connected to the air inlet 111 of the air cooling channel 11 through a pipeline, and the air inlet 4111 can be connected to the air compression mechanism 43 described below through a pipeline. The air inlet 4111 is a small tubular structure, and its inner wall is a convergent structure, that is, from the air inlet 4111 to the vortex chamber 4114, the radial dimension of the air inlet 4111 gradually narrows.

[0089] The vortex chamber 4114 may be understood as the inner cavity of the vortex tube 411 excluding the air inlet 4111 , the hot air outlet 4112 and the cold air outlet 4113 , and is located between the cold air outlet 4113 and the hot air outlet 4112 .

[0090] After the compressed air enters the vortex chamber 4114 through the convergent air inlet 4111, it expands and accelerates in the vortex chamber 4114 to form a high-speed rotating vortex, causing friction between the inner and outer circle vortices due to different angular velocities. The temperature of the inner circle vortex decreases, while the temperature of the outer circle vortex increases, thereby separating the cold and hot air flows. The cold air outlet 4113 can discharge the low-temperature airflow, while the hot air outlet 4112 discharges the high-temperature airflow. There are no mechanical moving parts in the entire refrigeration process, and the structure is simple, the operation is reliable and easy to control.

[0091] In some examples, optionally, the air cooling mechanism 41 further includes a regulating valve 4115 , which is installed at the hot air outlet 4112 , and the regulating valve 4115 is configured to adjust the outlet air temperature of the cold air outlet 4113 by adjusting the displacement of the hot air outlet 4112 .

[0092] The regulating valve 4115 is directly installed at the opening of the vortex tube 411 away from the cold air outlet 4113, and the regulating valve 4115 and the inner wall of the vortex tube 411 define a vortex chamber 4114. The hot air outlet 4112 is located at the tube wall of the regulating valve 4115 vortex tube 411 away from the cold air outlet 4113.

[0093] In some embodiments, the regulating valve 4115 may be threadedly connected to the inner wall of the vortex tube 411 , and the regulating valve 4115 has a regulating plug to block a portion of the hot gas outlet 4112 .

[0094] By rotating the regulating valve 4115, the size of the regulating valve blocking the hot air outlet 4112 can be changed, thereby controlling the exhaust volume of hot air, so that the air outlet temperature of the cold air outlet 4113 can be controlled.

[0095] In some examples, optionally, the air cooling device 40 further includes an air compression mechanism 43 , which is connected to the air inlet 4111 and is used to input compressed air into the air inlet 4111 .

[0096] The air compression mechanism 43 may be an air compressor. In some embodiments, the air compressor may be a piston type, a vane type, a screw type, a centrifugal type, etc. structure, which will not be listed one by one in this embodiment.

[0097] The air compression mechanism 43 can input compressed air into the vortex tube 411 through the air inlet 4111. The compressed air can expand rapidly and produce a cooling effect, thereby achieving rapid cooling, which can not only improve the refrigeration efficiency, but also stabilize the refrigeration temperature. Compared with other refrigeration methods, the refrigeration combination of the air compressor and the vortex tube 411 is more energy-saving and environmentally friendly.

[0098] Of course, the air compression mechanism 43 can also be regarded as not being a part of the pole piece rolling device 1 of this embodiment, and it can be an external device independent of the pole piece rolling device 1.

[0099] In some examples, optionally, the air cooling device 40 includes a switch component 42 , which is respectively connected to the air compression mechanism 43 and the air inlet 4111 , and is used to open and close the air intake of the air compression mechanism 43 to the air inlet 4111 .

[0100] The switch element 42 may be a valve body structure capable of opening and closing the pipeline between the air compressor and the air inlet 4111. The switch element 42 is used to open or close the air intake of the air compressor mechanism 43 to the air inlet 4111, so that the intake of compressed air can be controlled.

[0101] The opening and closing member can be a valve body structure such as a stop valve, a ball valve, or a butterfly valve. In some embodiments, the switch member 42 can be a solenoid valve, which has the advantages of simple structure, fast response speed, high reliability, etc., and is also convenient for electronic control.

[0102] Combine again with Figure 1 , Attachment Figure 2 And attached Figure 5As shown, in some examples, optionally, the pole piece rolling device 1 further includes a first mounting member 50 , the first mounting member 50 is connected to the bearing seat 10 , and the vortex tube 411 and the switch member 42 are both mounted on the first mounting member 50 .

[0103] The first mounting member 50 may be a plate-shaped member or a block-shaped member, and the material may be metal or a polymer material with a certain structural strength. The first mounting member 50 may be mounted on the upper surface of the bearing seat 10 by mechanical connection methods such as bolt connection and welding.

[0104] The vortex tube 411 can be connected to the first mounting member 50 by fasteners such as a pipe clamp 4116, and the switch member 42 can be installed on the first mounting member 50 by any connection method such as welding, bonding, and clamping. This embodiment does not list them one by one, as long as the vortex tube 411 and the switch member 42 can remain stable after installation.

[0105] After configuring the first mounting member 50, the vortex tube 411 and the switch member 42 can be integrated and installed using the first mounting member 50, without the need to separately install the vortex tube 411 and the switch member 42, thereby improving the installation efficiency of both while achieving fixation of the vortex tube 411 and the switch member 42.

[0106] In some embodiments of the present application, the air cooling channel 11 is disposed around at least a portion of the bearing component 20 .

[0107] The air cooling channel 11 is arranged around at least a part of the bearing component 20 , which means that a part or all of the bearing component 20 is surrounded by the outer air cooling channel 11 , and there is a certain interval between the two along the radial direction of the bearing component 20 .

[0108] by Figure 2 For example, the air cooling channel 11 in the embodiment is formed into a gate shape, which surrounds about three quarters of the bearing component 20. Of course, the air cooling channel 11 may also be in other shapes to surround more or less parts of the bearing component 20.

[0109] It should be noted that since the air cooling channel 11 is located inside the bearing seat 10, for the convenience of display, Figure 2 The shape of the air cooling channel 11 is shown by a dotted line.

[0110] The air cooling channel 11 is arranged around at least a portion of the bearing component 20 , so that the temperature of the bearing component 20 can be transferred to the air cooling channel 11 more quickly through the bearing seat 10 , thereby achieving faster cooling of the bearing seat 10 and the bearing component 20 .

[0111] In some examples, optionally, the air inlet 111 and the air outlet 112 are located on the same side of the bearing seat 10 in the radial direction of the bearing member 20 .

[0112] The air inlet 111 and the air outlet 112 are located on the same side of the bearing seat 10 in the radial direction of the bearing component 20 , which can also be understood as the air inlet 111 and the air outlet 112 are located on the same side of the mounting through hole of the bearing seat 10 in the radial direction.

[0113] Taking the cross-sectional shape of the bearing seat 10 in the figure as a rectangle as an example, the bearing seat 10 has four sides in two radial directions perpendicular to each other of the bearing member 20, and the air inlet 111 and the air outlet 112 are located near one of the sides.

[0114] Similarly, when the cross section of the bearing seat 10 is a pentagon or a polygon with more sides, the air inlet 111 and the air outlet 112 are also located near one of the sides.

[0115] The air inlet 111 and the air outlet 112 are designed to be located on the same side of the bearing seat 10 , so that the area of ​​the air cooling channel 11 surrounding the bearing component 20 can be enlarged, thereby providing a better cooling effect for the bearing component 20 .

[0116] Combined with Figure 1 , Attachment Figure 2 And attached Figure 6 As shown, in some examples, optionally, the pole piece rolling device 1 further includes a pressure detection component 60, which is connected to the air cooling device 40 or the air cooling channel 11 and is used to detect the air flow pressure.

[0117] The pressure detection member 60 may be a pressure gauge or a pressure sensor, which may detect the gas pressure in the air cooling device 40 or the air cooling channel 11 .

[0118] In some embodiments, the pressure detection component 60 can be located on a pipeline (not shown in the figure) connecting the vortex tube 411 and the air inlet 111, so as to obtain the gas pressure flowing out of the vortex tube 411. When the detected gas pressure is less than or greater than a preset value, the pressure detection component 60 can sound an alarm through a connected alarm.

[0119] The above structure utilizes the pressure detection component 60 to perform pressure detection and monitoring on the air-cooling airflow of the air-cooling device 40. When the pressure fluctuates greatly or deviates greatly from the preset value, it can be determined that a fault has occurred in the air-cooling device 40 or the air-cooling channel 11, thereby enabling timely processing, which can improve the stability of the operation of the equipment's refrigeration function to a certain extent.

[0120] In some examples, optionally, the pole piece rolling equipment 1 further includes a flow detection component 70 , which is connected to the air cooling device 40 or the air cooling channel 11 and is used to detect the air flow rate.

[0121] The flow detection element 70 may be a structure such as a gas flow meter or a gas flow sensor, which can detect the gas flow in the air cooling device 40 or the air cooling channel 11 .

[0122] In some embodiments, the gas flow meter is directly connected to the cold air outlet 4113 of the air cooling device 40 through a pipeline or a pipe joint, and of course, it can also be directly connected to the air cooling channel 11.

[0123] The gas flow meter may be a mass flow meter, a volume flow meter, a vortex flow meter, or an ultrasonic flow meter, etc., which are not listed one by one in this embodiment.

[0124] In some embodiments, the gas flow meter may include a gas flow sensor, which may be a thermal gas flow sensor, a differential pressure gas flow sensor, a vortex gas flow sensor, or the like.

[0125] The flow detection component 70 is used to detect and monitor the flow of the air-cooling airflow in the air-cooling channel 11. When the flow fluctuates greatly or deviates greatly from the preset value, it can be determined that the air-cooling device 40 or the air-cooling channel 11 has a fault, so that timely processing can be carried out, which can improve the stability of the refrigeration function of the equipment to a certain extent.

[0126] In some examples, optionally, the pole piece rolling device 1 further includes a temperature detection member 80 , which is mounted on the bearing seat 10 and is used to detect the temperature of the bearing seat 10 .

[0127] The temperature detection component 80 can be a temperature sensor, a thermometer, a thermocouple, a thermistor or the like, as long as it can detect the surface or internal temperature of the bearing seat 10 .

[0128] The temperature detection member 80 can be placed outside the bearing seat 10 as shown in the figure, and contact the outside of the bearing seat 10. Alternatively, the temperature detection member 80 can be located inside the bearing seat 10 to detect the temperature inside the bearing seat 10.

[0129] When the temperature detecting element 80 detects that the temperature is too high, an alarm may be sounded through a warning device such as an alarm connected thereto (not shown in the figure), or the alarm may be displayed through a display device.

[0130] The above structure uses the temperature detection member 80 to detect and monitor the temperature of the bearing seat 10, so as to open the air cooling device 40 in time for cooling or to give an early warning of an operating failure of the air cooling device 40.

[0131] In some examples, optionally, the pole piece rolling device 1 further includes a control component 90 , and the control component 90 is communicatively connected with the temperature detection component 80 and the air cooling device 40 , respectively.

[0132] The control component 90 may include a control structure such as a controller or a processor that can receive signals, process data, and send control instructions. The controller may include a control circuit such as a PLC or an MCU.

[0133] The control component 90 can achieve communication connection with the above-mentioned temperature detection component 80 and the air cooling device 40 through lines or wireless signals, and the temperature detection component 80 can transmit the detected temperature information of the bearing seat 10 to the control component 90.

[0134] The control component 90 processes and judges based on the temperature data detected by the temperature detection element 80. When the temperature of the bearing seat 10 is high, it can send an opening instruction to the air cooling device 40. When the temperature is too high, the control component 90 can send an instruction to increase the power to the air cooling device 40, or the control component 90 directly turns on the alarm device for sound or light alarm.

[0135] In this embodiment, the control component 90 is communicatively connected with the temperature detection component 80 and the air cooling device 40 respectively. The control component 90 can adaptively open and close the air cooling device 40 or adjust the operating power of the air cooling device 40 according to the temperature of the bearing seat 10 detected by the temperature detection component 80.

[0136] In some embodiments, the control component 90 can also be connected to the aforementioned pressure detection component 60 and flow detection component 70 through lines or wireless signal communications, so that the control component 90 can be used to determine whether the gas pressure and flow meet the requirements. When the gas pressure or flow exceeds the standard, the control component 90 can also turn on the alarm to sound an alarm.

[0137] In some examples, optionally, the pole piece rolling device 1 further includes a second mounting member 100 , the second mounting member 100 is connected to the bearing seat 10 , and the temperature detection member 80 and the control assembly 90 are both mounted on the second mounting member 100 .

[0138] The second mounting member 100 has the same or similar structure as the aforementioned first mounting member 50 , and may be a metal member or other material with structural strength, such as plastic.

[0139] The use of the second mounting member 100 not only facilitates the installation of the temperature sensing member 80 and the control assembly 90 , but also realizes the integrated installation of the temperature sensing member 80 and the control assembly 90 , without the need to configure separate mounting structures for the two.

[0140] In addition, the pressure detection component 60 and the flow detection component 70 mentioned above can also be integrated and installed on the second installation component 100, so as to further simplify the structure and improve the installation efficiency and cost of each electrical component.

[0141] When the number of bearing seats 10 in this embodiment is two, each bearing seat 10 can be provided with a first mounting member 50 and a second mounting member 100, each first mounting member 50 is installed with an air cooling device 40 and a switch member 42, and each second mounting member 100 is installed with the above-mentioned electrical components such as the temperature detection member 80, the control component 90, the flow detection member 70 and the pressure detection member 60, so as to realize the individual cooling and temperature reduction control of each bearing seat 10.

[0142] Combined with Figure 7 As shown, the figure shows the refrigeration flow diagram of the pole piece rolling equipment 1 in some embodiments. In this embodiment, the air compression mechanism 43, the switch component 42, the vortex tube 411, the pressure detection component 60 and the air inlet 111 of the air cooling channel 11 are connected by pipelines in sequence, and the flow detection component 70 can be used to detect the gas pressure in the air volume channel or detect the gas pressure at the exhaust port 112 of the air cooling channel 11, thereby realizing the control of the refrigeration cycle and refrigeration parameters (temperature, pressure and flow).

[0143] Finally, please see the attached Figure 1-7As shown, the embodiment of the present application provides a pole piece rolling device 1, including a bearing seat 10, a bearing member 20, a roller 30 and an air cooling device 40. The bearing seat 10 is provided with an air cooling channel 11, and the air cooling channel 11 has an air inlet 111 and an exhaust port 112 for connecting to the atmosphere. The outer ring portion 22 of the bearing member 20 is installed on the bearing seat 10, and the roller 30 is coaxially connected to the inner ring portion 21 of the bearing member 20; the air cooling device 40 is connected to the air inlet 111 and is used to blow air cooling air into the air cooling channel 11. The air cooling device 40 includes an air cooling mechanism 41, and the air cooling mechanism 41 is provided with an air inlet 4111, a hot air outlet 4112 and a cold air outlet 4113, and the cold air outlet 4113 is connected to the air inlet 111. The air cooling mechanism 41 includes a vortex tube 411, one end of the vortex tube 411 is provided with a hot air outlet 4112, and the other end is provided with a cold air outlet 4113. The tube wall of the vortex tube 411 is provided with an air inlet 4111, and the vortex tube 411 is provided with a vortex chamber 4114 for forming a vortex of the airflow entering the air inlet 4111, and the vortex chamber 4114 is respectively connected to the air inlet 4111, the hot air outlet 4112 and the cold air outlet 4113. The air cooling mechanism 41 also includes a regulating valve 4115, which is installed at the hot air outlet 4112, and the regulating valve 4115 is configured to adjust the outlet air temperature of the cold air outlet 4113 by adjusting the displacement of the hot air outlet 4112. The air cooling device 40 also includes an air compression mechanism 43, which is connected to the air inlet 4111 and is used to input compressed air to the air inlet 4111. The air cooling device 40 includes a switch member 42, which is respectively connected to the air compressor mechanism 43 and the air inlet 4111, and is used to open and close the air intake of the air compressor mechanism 43 to the air inlet 4111. The pole piece rolling equipment 1 also includes a first mounting member 50, the first mounting member 50 is connected to the bearing seat 10, and the vortex tube 411 and the switch member 42 are both installed on the first mounting member 50. The air cooling channel 11 is arranged around at least part of the bearing member 20. The air inlet 111 and the air outlet 112 are located on the same side of the bearing seat 10 along the radial direction of the bearing member 20. The pole piece rolling equipment 1 also includes a pressure detection member 60, which is connected to the air cooling device 40 or the air cooling channel 11 and is used to detect the air flow pressure. The pole piece rolling equipment 1 also includes a flow detection member 70, which is connected to the air cooling device 40 or the air cooling channel 11 and is used to detect the air flow rate. The pole piece rolling device 1 further includes a temperature detection member 80, which is mounted on the bearing seat 10 and is used to detect the temperature of the bearing seat 10. The pole piece rolling device 1 further includes a control component 90, which is respectively connected to the temperature detection member 80 and the air cooling device 40 for communication. The pole piece rolling device 1 further includes a second mounting member 100, which is connected to the bearing seat 10, and the temperature detection member 80 and the control component 90 are both mounted on the second mounting member 100.

[0144] Based on the pole piece rolling device 1 provided in this embodiment, this embodiment also provides a battery production system, including the pole piece rolling device 1 as the above technical solution.

[0145] In addition to the pole piece rolling equipment 1 mentioned in this embodiment, the battery production system may also include pole piece production equipment, slurry coating equipment and pole piece cutting equipment (not shown in the figure) to form a pole piece production line.

[0146] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0147] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A pole piece rolling device, characterized in that: include: The bearing seat is provided with an air cooling channel therein, wherein the air cooling channel has an air inlet and an exhaust port for communicating with the atmosphere; A bearing component, the outer ring of which is mounted on the bearing seat; a roller coaxially connected to the inner ring portion of the bearing member; and The air cooling device is connected to the air inlet and is used to blow air cooling air into the air cooling channel.

2. The pole piece rolling equipment according to claim 1, characterized in that: The air cooling device comprises an air cooling mechanism, wherein the air cooling mechanism is provided with an air inlet, a hot air outlet and a cold air outlet, and the cold air outlet is communicated with the air inlet.

3. The pole piece rolling equipment according to claim 2, characterized in that: The air cooling mechanism includes a vortex tube, one end of the vortex tube is provided with the hot air outlet, the other end is provided with the cold air outlet, the tube wall of the vortex tube is provided with the air inlet, and the vortex tube is provided with a vortex cavity for forming the airflow entering the air inlet into a vortex, and the vortex cavity is respectively connected to the air inlet, the hot air outlet and the cold air outlet.

4. The pole piece rolling equipment according to claim 3, characterized in that: The air cooling mechanism further comprises a regulating valve, which is installed at the hot air outlet and is used to adjust the exhaust volume of the hot air outlet.

5. The pole piece rolling equipment according to claim 3, characterized in that: The air cooling device also includes an air compression mechanism, which is communicated with the air inlet and is used to input compressed air into the air inlet.

6. The pole piece rolling equipment according to claim 5, characterized in that: The air cooling device comprises a switch component, which is respectively connected to the air compression mechanism and the air inlet and is used for opening and closing the air intake of the air compression mechanism to the air inlet.

7. The pole piece rolling equipment according to claim 6, characterized in that: The pole piece rolling device further comprises a first mounting member, the first mounting member is connected to the bearing seat, and the vortex tube and the switch member are both mounted on the first mounting member.

8. The pole piece rolling equipment according to any one of claims 1 to 7, characterized in that: The air cooling channel is arranged around at least a portion of the bearing component.

9. The pole piece rolling equipment according to claim 6, characterized in that: The air inlet and the air outlet are located on the same side of the bearing seat in the radial direction of the bearing member.

10. The pole piece rolling equipment according to any one of claims 1 to 7, characterized in that: The pole piece rolling equipment further comprises a pressure detection component, which is connected to the air cooling device or the air cooling channel and is used to detect air flow pressure.

11. The pole piece rolling equipment according to any one of claims 1 to 7, characterized in that: The pole piece rolling equipment further comprises a flow detection component, which is connected to the air cooling device or the air cooling channel and is used to detect the air flow.

12. The pole piece rolling equipment according to any one of claims 1 to 7, characterized in that: The pole piece rolling equipment further comprises a temperature detection component, which is mounted on the bearing seat and is used to detect the temperature of the bearing seat.

13. The pole piece rolling equipment according to claim 12, characterized in that: The pole piece rolling equipment further comprises a control component, and the control component is respectively connected to the temperature detection component and the air cooling device for communication.

14. The pole piece rolling equipment according to claim 13, characterized in that: The pole piece rolling equipment further comprises a second mounting member, the second mounting member is connected to the bearing seat, and the temperature detection member and the control assembly are both mounted on the second mounting member.

15. A battery production system, characterized in that: It comprises a pole piece rolling device as described in any one of claims 1-14.

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