CN221197811U - Oven equipment and battery production line - Google Patents

Abstract

The embodiment of the application provides oven equipment and a battery production line. The oven equipment comprises an oven body, a getter and a negative pressure mechanism. The oven body is used for drying the pole piece. The getter is arranged outside the oven body along the conveying direction of the pole piece and at the downstream of the oven body, and the getter is configured to be capable of absorbing the gas on the surface of the pole piece processed by the oven body. The oven body and the air suction piece are respectively connected with a negative pressure mechanism, and the negative pressure mechanism is used for providing negative pressure. The technical scheme provided by the application can improve the safety of battery production.

Description

Oven equipment and battery production line

Technical Field

The application relates to the technical field of battery production, in particular to oven equipment and a battery production line.

Background

Energy conservation and emission reduction are key to sustainable development of the automobile industry, and electric vehicles become an important component of sustainable development of the automobile industry due to the energy conservation and environmental protection advantages of the electric vehicles. For electric vehicles, battery technology is an important factor in the development of the electric vehicles.

In the development of battery technology, how to improve the safety of battery production is a technical problem that needs to be solved in battery technology.

Disclosure of utility model

The application provides an oven device and a battery production line, which can improve the safety of battery production.

The application is realized by the following technical scheme:

In a first aspect, the present application provides an oven apparatus. The oven equipment comprises an oven body, a getter and a negative pressure mechanism. The oven body is used for drying the pole piece. The getter is arranged outside the oven body along the conveying direction of the pole piece and at the downstream of the oven body, and the getter is configured to be capable of absorbing the gas on the surface of the pole piece processed by the oven body. The oven body and the air suction piece are respectively connected with a negative pressure mechanism, and the negative pressure mechanism is used for providing negative pressure.

According to the technical scheme, the negative pressure mechanism is connected with the oven body, negative pressure is provided for the interior of the oven body, gas on the surface of the pole piece is sucked into the oven body, and the risk of gas leakage on the surface of the pole piece is reduced. The negative pressure mechanism is used for connecting the air suction piece, the air suction piece is arranged at the downstream of the oven body and used for absorbing the gas on the surface of the pole piece, so that the risk that the gas on the surface of the pole piece enters the external environment is further reduced, the risk that the gas on the surface of the pole piece damages staff is reduced, and the safety of battery production is improved.

In some embodiments, the getter comprises a first sub-getter comprising a getter roller and a first getter channel, the getter roller is used for transmitting the pole piece, the getter roller has a containing cavity, the outer circumferential surface of the getter roller is provided with a getter hole communicated with the containing cavity, the negative pressure mechanism comprises a first sub-negative pressure mechanism, one end of the first getter channel is connected with the first sub-negative pressure mechanism, and the other end is connected with the getter roller and communicated with the containing cavity.

According to the technical scheme provided by the embodiment of the application, the first air suction pipeline is communicated with the first sub-negative pressure mechanism and the accommodating cavity, so that the air suction pipe can suck the air on the surface of the pole piece into the accommodating cavity through the air suction hole, the risk that the air on the surface of the pole piece enters the external environment is reduced, and the safety of battery production is improved.

In some embodiments, the number of suction holes is plural, the plural suction holes are arranged at intervals along the circumferential direction of the suction roller, and the first sub-suction member further includes a shielding member shielding a part of the suction holes in the circumferential direction of the suction roller.

According to the technical scheme provided by the embodiment of the application, the shielding piece is arranged to shield part of the air suction holes, so that the probability of sucking air by the air suction holes is reduced, the air suction of the rest air suction holes is larger, the effect of absorbing the air on the surface of the pole piece by the air suction holes is better, and the safety of battery production is improved.

In some embodiments, the shield includes a shield body having a first surface facing away from a central axis of the suction roller, the first surface being a cambered surface centered on the central axis of the suction roller, and a protrusion protruding from the first surface, at least a portion of the protrusion being disposed in the suction hole to block the suction hole.

According to the technical scheme provided by the embodiment of the application, at least part of the protruding part of the blocking piece is arranged in the air suction hole, so that the probability of sucking air by the air suction hole is further reduced, the effect of sucking gas on the surface of the pole piece by the air suction hole is better, and the safety of battery production is improved.

In some embodiments, the suction roller comprises a side plate and two end plates, the side plate is arranged around the edge of the end plate, the two end plates are respectively arranged at two ends of the side plate in the axial direction of the suction roller, and the side plate and the two end plates jointly define a containing cavity;

the first sub-getter also comprises a support frame, the support frame is arranged on the two end plates in a penetrating mode so that the getter roller is sleeved on the support frame, the getter roller can rotate relative to the support frame, and the shielding piece is arranged on the support frame.

According to the technical scheme, the shielding piece is arranged on the support frame, the air suction roller rotates relative to the support frame, namely, when the pole piece drives the air suction roller to rotate, the position of the shielding piece is unchanged, the shielding piece shields part of the air suction holes, the probability of sucking air through the air suction holes is reduced, the air suction of the rest air suction holes is enabled to be larger, the effect of sucking air on the surface of the pole piece through the air suction holes is enabled to be better, and the safety of battery production is improved.

In some embodiments, the getter further comprises a second sub getter disposed at the output end of the oven body, the second sub getter comprising a second getter conduit in communication with the interior of the oven body, the negative pressure mechanism further comprising a second sub negative pressure mechanism, the second getter conduit being connected to the second sub negative pressure mechanism, the second getter conduit being configured to absorb a gas from the surface of the pole piece.

According to the technical scheme provided by the embodiment of the application, the second air suction pipeline is arranged at the output end of the oven body, the gas on the surface of the pole piece is absorbed, the risk that the gas on the surface of the pole piece enters the external environment is reduced, and the safety of battery production is improved.

In some embodiments, a first adsorbent material is disposed within the second suction line for filtering gas drawn in by the second suction line.

According to the technical scheme provided by the embodiment of the application, the first adsorption material is arranged in the second air suction pipeline, and filters the air sucked by the second air suction pipeline, so that the risk that the air on the surface of the pole piece damages workers is reduced, and the safety of battery production is improved.

In some embodiments, the getter further comprises a third sub getter, the third sub getter is disposed at the output end of the oven body, the third sub getter comprises a third getter pipe, the third getter pipe is communicated with the interior of the oven body, the third getter pipe and the second getter pipe are respectively disposed at two sides of the pole piece in the thickness direction, the negative pressure mechanism further comprises a third sub negative pressure mechanism, the third getter pipe is connected with the third sub negative pressure mechanism, and the third getter pipe is used for absorbing gas on the surface of the pole piece.

According to the technical scheme provided by the embodiment of the application, the third air suction pipeline and the second air suction pipeline are respectively arranged at two sides of the pole piece in the thickness direction, so that the gas on the two surfaces of the pole piece in the thickness direction is respectively absorbed, the risk that the gas on the surface of the pole piece enters the external environment is further reduced, the risk that the gas on the surface of the pole piece damages staff is reduced, and the safety of battery production is improved.

In some embodiments, a second adsorbent material is disposed within the third suction line for filtering gas drawn in by the third suction line.

According to the technical scheme provided by the embodiment of the application, the second adsorption material is arranged in the third air suction pipeline, and filters the air sucked by the third air suction pipeline, so that the risk that the air on the surface of the pole piece damages workers is reduced, and the safety of battery production is improved.

In some embodiments, the oven apparatus further comprises a cleaning device, the negative pressure mechanism further comprising a fourth sub-negative pressure mechanism, the fourth sub-negative pressure mechanism connecting the oven body and the cleaning device for delivering gas within the oven body to the cleaning device.

According to the technical scheme provided by the embodiment of the application, the fourth sub-negative pressure mechanism is connected with the oven body and the cleaning device, so that the gas in the oven body is conveyed to the cleaning device, the risk that the gas on the surface of the pole piece enters the external environment is reduced, and the safety of battery production is improved.

In a second aspect, the application also provides a battery production line comprising an oven apparatus as in any one of the embodiments of the first aspect.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an oven apparatus provided in some embodiments of the present application;

FIG. 2 is a schematic view of a first sub-getter provided in some embodiments of the application;

FIG. 3 is a schematic view of a first sub-getter in accordance with some embodiments of the present application;

FIG. 4 is a schematic view of a second sub-getter and a third sub-getter provided in some embodiments of the application;

fig. 5 is a schematic view of another view of a second sub-getter and a third sub-getter provided in some embodiments of the application.

Icon: 1-an oven apparatus; 10-an oven body; 11-input terminal; 12-an output; 20-getter; 21-a first sub-getter; 211-suction rolls; 2111-accommodating chambers; 2112—suction holes; 2113-side panels; 2114-end plates; 212-a first suction line; 213-a shutter; 2131-a shutter body; 21311—a first surface; 2132-a protrusion; 214-a support frame; 22-a second sub-getter; 221-a second suction line; 2211—a first adsorbent material; 23-a third sub-getter; 231-a third suction line; 2311-a second adsorbent material; 30-a negative pressure mechanism; 31-a first sub-negative pressure mechanism; 32-a second sub-negative pressure mechanism; 33-a third sub-negative pressure mechanism; 34-a fourth sub-negative pressure mechanism; 40-cleaning device; 2-pole pieces.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

The term "and/or" in the present application is merely an association relation describing the association object, and indicates that three kinds of relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In the present application, the character "/" generally indicates that the front and rear related objects are an or relationship.

The term "plurality" as used herein means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In some embodiments, the battery may be a battery module, and when there are a plurality of battery cells, the plurality of battery cells are arranged and fixed to form one battery module.

In some embodiments, the battery may be a battery pack including a case and a battery cell, the battery cell or battery module being housed in the case.

In some embodiments, the tank may be part of the chassis structure of the vehicle. For example, a portion of the tank may become at least a portion of the floor of the vehicle, or a portion of the tank may become at least a portion of the cross member and the side member of the vehicle.

In some embodiments, the battery may be an energy storage device. The energy storage device comprises an energy storage container, an energy storage electric cabinet and the like.

In the embodiment of the application, the battery cell can be a secondary battery, and the secondary battery refers to a battery cell which can activate the active material in a charging mode to continue to use after the battery cell discharges.

The battery cell may be, but is not limited to, a lithium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, and the like.

As examples, the battery cells may be cylindrical battery cells, prismatic battery cells, soft pack battery cells, or other shaped battery cells, prismatic battery cells including square case battery cells.

The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge of the battery cell, active ions (e.g., lithium ions) are inserted and extracted back and forth between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, can play a role in preventing the positive electrode and the negative electrode from being short-circuited, and can enable active ions to pass through.

In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

As an example, the positive electrode current collector has two surfaces opposing in its own thickness direction, and the positive electrode active material is provided on either or both of the two surfaces opposing the positive electrode current collector.

As an example, the positive electrode current collector may employ a metal foil or a composite current collector. For example, as the metal foil, surface-silver-treated aluminum, surface-silver-treated stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, titanium, or the like can be used. The composite current collector may include a polymeric material base layer and a metal layer. The composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel alloy, titanium alloy, silver alloy, etc.) on a polymer material substrate (e.g., a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, the present application is not limited to these materials, and other conventional materials that can be used as a battery positive electrode active material may be used.

In some embodiments, the negative electrode may be a negative electrode tab, which may include a negative electrode current collector.

As an example, the negative electrode current collector may employ a metal foil or a composite current collector. For example, as the metal foil, surface-silver-treated aluminum, surface-silver-treated stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, titanium, or the like can be used.

In some embodiments, the anode current collector has two surfaces opposing in a thickness direction thereof, and the anode active material is provided on either or both of the two surfaces opposing the anode current collector.

As an example, a negative electrode active material for a battery known in the art may be used. As an example, the anode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, lithium titanate, and the like. The silicon-based material may be at least one selected from elemental silicon, silicon oxygen compounds, silicon carbon composites, silicon nitrogen composites, and silicon alloys. The tin-based material may be at least one selected from elemental tin, tin oxide, and tin alloys. However, the present application is not limited to these materials, and other conventional materials that can be used as a battery anode active material may be used. These negative electrode active materials may be used alone or in combination of two or more.

In some embodiments, the separator is a membrane. The type of the separator is not particularly limited, and any known porous separator having good chemical stability and mechanical stability may be used.

As an example, the main material of the separator may be at least one selected from glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator may be a single-layer film or a multilayer composite film, and is not particularly limited. When the separator is a multilayer composite film, the materials of the respective layers may be the same or different, and are not particularly limited. The separator may be a single member located between the positive and negative electrodes, or may be attached to the surfaces of the positive and negative electrodes.

In some embodiments, the separator is a solid state electrolyte. The solid electrolyte is arranged between the anode and the cathode and plays roles in transmitting ions and isolating the anode and the cathode.

In some embodiments, the electrode assembly is a rolled structure. The positive pole piece and the negative pole piece are wound into a winding structure.

Currently, from the development of market situation, batteries have been widely used in electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and various fields such as electric tools, unmanned aerial vehicles, and energy storage devices. With the continuous expansion of the field of battery use, the market demand is also continuously expanding.

The development of battery technology is to consider various design factors, such as energy density, cycle life, discharge capacity, charge-discharge rate, and other performance parameters, and in addition, the safety problem in the battery production process is one of the important factors.

At present, in the production process of the pole piece, the pole piece is usually formed by coating slurry on two sides of a current collector, and the pole piece is dried by an oven, namely, the slurry on the surface of the pole piece is dried. When the pole piece is dried, gas is generated on the surface of the pole piece, and the generated gas mainly comprises pollutants such as organic solvent, acid-base gas, dust and the like. An exhaust system is usually arranged in the oven, and polluted gas generated during drying is discharged into the cleaning device through the exhaust system, is treated by the cleaning device and is discharged into the external environment.

However, after the pole piece is output by the oven, the temperature of the pole piece surface is not reduced yet, yu Wenhui continues to evaporate the slurry on the pole piece surface, so that generated gas can volatilize to the external environment, or generated gas when the pole piece is dried by the oven is dispersed to the external environment from the interior of the oven, thereby influencing the safety of staff and the safety of battery production.

Based on the above consideration, in order to reduce the risk of the gas on the surface of the pole piece entering the external environment, reduce the risk of the gas on the surface of the pole piece endangering staff and improve the safety of battery production, the embodiment of the application provides oven equipment. The oven equipment comprises an oven body, a getter and a negative pressure mechanism. The oven body is used for drying the pole piece. The getter is arranged outside the oven body along the conveying direction of the pole piece and at the downstream of the oven body, and the getter is configured to be capable of absorbing the gas on the surface of the pole piece processed by the oven body. The oven body and the air suction piece are respectively connected with a negative pressure mechanism, and the negative pressure mechanism is used for providing negative pressure.

The negative pressure mechanism is connected with the oven body, and the gas on the surface of the pole piece is sucked into the oven body, so that the risk that the gas on the surface of the pole piece is dispersed from the oven body to the external environment is reduced. The negative pressure mechanism is connected with the air suction piece, the air suction piece is arranged at the downstream of the oven body, the gas on the surface of the pole piece is absorbed, the risk that the gas on the surface of the pole piece enters the external environment is reduced, the risk that the gas on the surface of the pole piece damages staff is reduced, and the safety of battery production is improved.

The oven equipment disclosed by the embodiment of the application not only can be used for drying the pole piece, but also can be used for other products which possibly generate harmful gas during drying.

Referring to fig. 1, fig. 1 is a schematic diagram of an oven apparatus according to some embodiments of the application. In order to facilitate the display of the pole pieces in the oven body, the pole pieces in the oven body are indicated by dotted lines, and the internal structure of each sub-getter is simply illustrated. The embodiment of the application provides oven equipment 1. The oven apparatus 1 includes an oven body 10, a getter 20, and a negative pressure mechanism 30. The oven body 10 is used for drying the pole piece 2. The getter 20 is disposed outside the oven body 10 along the conveying direction of the pole piece 2 and downstream of the oven body 10, and the getter 20 is configured to be capable of absorbing the gas on the surface of the pole piece 2 processed by the oven body 10. The oven body 10 and the getter 20 are respectively connected with a negative pressure mechanism 30, and the negative pressure mechanism 30 is used for providing negative pressure.

In some embodiments, oven body 10 is used to dry pole piece 2. The oven body 10 can be the existing oven on the pole piece 2 production line, and the oven body 10 can utilize the electric heating circulation to generate hot air so as to dry the pole piece 2.

In some embodiments, the oven body 10 may be a closed box, the pole piece 2 passes through the oven body 10, and the pole piece 2 passing through the oven body 10 is output after being dried inside the oven body 10.

In some embodiments, the gas generated when drying the pole piece 2 mainly comprises organic solvent, acid-base gas, dust and other pollutants. The organic solvent can be N-methyl pyrrolidone solvent, and the organic solvent gas is gas generated by volatilizing the N-methyl pyrrolidone solvent. Dust mainly comes from scattering of anode and cathode active materials, such as lithium cobaltate, lithium manganate, lithium nickel cobalt manganate, carbon black, polyvinylidene fluoride, graphite and other powder materials in the drying process.

When the pole piece 2 is output from the oven body 10, the residual temperature on the surface of the pole piece 2 can continuously dry the pole piece 2, so that the surface of the pole piece 2 continuously volatilizes gas; when the pole piece 2 is output from the oven body 10, the conveying of the pole piece 2 may also bring the gas on the surface of the pole piece 2 originally inside the oven body 10 to the outside of the oven body 10; the gas on the surface of the pole piece 2 inside the oven body 10 may be dispersed from the output end 12 of the oven body 10 to the outside of the oven body 10. In some embodiments, a getter 20 may be provided downstream of oven body 10, getter 20 absorbing the gases mentioned above.

In some embodiments, negative pressure mechanism 30 may be an exhaust fan, a fan, or the like.

In some embodiments, getter 20 may also be partially disposed inside oven body 10.

According to the technical scheme provided by the embodiment of the application, the negative pressure mechanism 30 is connected with the oven body 10 to provide negative pressure for the interior of the oven body 10, so that the gas on the surface of the pole piece 2 is sucked into the oven body 10, and the risk of gas leakage on the surface of the pole piece 2 is reduced. The negative pressure mechanism 30 is used for connecting the air suction piece 20, the air suction piece 20 is arranged at the downstream of the oven body 10 and absorbs the gas on the surface of the pole piece 2, so that the risk that the gas on the surface of the pole piece 2 enters the external environment is further reduced, the risk that the gas on the surface of the pole piece 2 damages workers is reduced, the safety of battery production is improved, and meanwhile, the harm to the environment is also reduced.

Referring to fig. 1, and referring to fig. 2 and 3, fig. 2 is a schematic view of a first sub-getter provided in some embodiments of the present application; fig. 3 is a schematic view of a first sub-getter according to another embodiment of the application. Wherein the blinder is hidden in fig. 2, and one of the end plates is hidden in fig. 3 for ease of showing the construction of the blinder. Wherein the dotted line represents the suction hole and a part of the protrusion provided in the suction hole. In some embodiments, the getter 20 includes a first sub-getter 21, the first sub-getter 21 includes a getter roller 211 and a first getter pipe 212, the getter roller 211 is used for transporting the pole piece 2, the getter roller 211 has a receiving chamber 2111, an outer circumferential surface of the getter roller 211 is provided with a getter hole 2112 communicating with the receiving chamber 2111, the negative pressure mechanism 30 includes a first sub-negative pressure mechanism 31, and one end of the first getter pipe 212 is connected to the first sub-negative pressure mechanism 31, and the other end is connected to the getter roller 211 and communicates with the receiving chamber 2111.

In some embodiments, the pole piece 2 output from the oven body 10 may be transported to the next process via the suction roller 211. When the suction roller 211 conveys the pole piece 2, the pole piece 2 may be wound around the outer peripheral surface of a part of the suction roller 211, and the winding angle may be 80 °, 90 °, 100 °, and the like.

In some embodiments, the suction roll 211 may be a hollow roll, with the interior of the suction roll 211 having a receiving cavity 2111. The outer peripheral surface of the suction roller 211 is provided with suction holes 2112, one end of the first suction pipe 212 is communicated with the accommodating cavity 2111, the other end of the first suction pipe 212 is connected with the first sub-negative pressure mechanism 31, the first sub-negative pressure mechanism 31 provides suction power, and when the pole piece 2 is wound on the outer peripheral surface of the suction roller 211, gas on the surface of the pole piece 2 is sucked out by the first suction pipe 212 through the suction holes 2112 and the accommodating cavity 2111.

In some embodiments, first suction conduit 212 may communicate holding chamber 2111 with the interior of oven body 10 such that the gas at the surface of pole piece 2 is directed into the interior of oven body 10 and is delivered to the gas treatment device along with the gas inside oven body 10.

In some embodiments, the suction holes 2112 may be circular, square, rectangular, diamond-shaped, or the like in shape.

In some embodiments, the number of the suction holes 2112 may be plural, and the arrangement of the plurality of suction holes 2112 may be random arrangement, staggered arrangement, array arrangement, or the like.

In some embodiments, the plurality of suction holes 2112 may be the same or different in size.

In some embodiments, the suction holes 2112 may be circular holes, and the suction holes 2112 may be 0.1cm, 1cm, 5cm, 10cm, etc. directly.

In some embodiments, the number of the first sub-getters 21 may be one or more. That is, the number of the suction rolls 211 may be one or more. The plurality of suction rollers 211 may share one first sub-negative pressure mechanism 31, or a plurality of first sub-negative pressure mechanisms 31 may be provided to correspond to each other. The plurality of suction rollers 211 may share one first sub-suction duct, or may be provided in correspondence with a plurality of first sub-suction ducts, respectively.

In some embodiments, the perimeter of the suction roll 211 may be 30cm, 50cm, 70cm, 90cm, 100cm, etc.

According to the technical scheme provided by the embodiment of the application, the first air suction pipeline 212 is communicated with the first sub-negative pressure mechanism 31 and the accommodating cavity 2111, so that the air suction pipe can suck the air on the surface of the pole piece 2 into the accommodating cavity 2111 through the air suction hole 2112, the risk that the air on the surface of the pole piece 2 enters the external environment is reduced, and the safety of battery production is improved.

Referring to fig. 1 to 3, in some embodiments, the number of the suction holes 2112 is plural, the plural suction holes 2112 are disposed at intervals along the circumferential direction of the suction roller 211, and the first sub-suction member 21 further includes a shielding member 213, and the shielding member 213 shields a part of the suction holes 2112 in the circumferential direction of the suction roller 211.

In some embodiments, a plurality of suction holes 2112 are provided at intervals along the circumferential direction of the suction roller 211. The circumferential direction of the suction roller 211 may be an extending direction of the outer circumferential surface of the suction roller 211, and the outer circumferential surface of the suction roller 211 may be a cambered surface, that is, the circumferential direction of the suction roller 211 may be a rotation direction around the central axis of the suction roller 211.

In some embodiments, when the pole piece 2 is wound around the suction roller 211, it is generally wound around only a portion of the outer circumferential surface of the suction roller 211. The plurality of suction holes 2112 are provided at intervals on the outer circumferential surface of the suction roller 211, that is, a part of the suction holes 2112 may correspond to the surface of the pole piece 2, and a part of the suction holes 2112 may not correspond to the surface of the pole piece 2.

In some embodiments, the shield 213 shields a portion of the suction holes 2112. The suction holes 2112 blocked by the blocking member 213 may be suction holes 2112 which do not correspond to the surface of the pole piece 2, so that the suction force of the first suction pipe 212 is better for the suction holes 2112 to absorb the gas of the surface of the pole piece 2.

In some embodiments, the shielding member 213 may also shield part of the suction holes 2112 corresponding to the pole piece 2 to reduce the probability that the suction holes 2112 absorb the external air, thereby reducing the influence on the suction holes 2112 absorbing the gas on the surface of the pole piece 2.

According to the technical scheme provided by the embodiment of the application, the shielding piece 213 is arranged to shield part of the air suction holes 2112, so that the probability of sucking air by the air suction holes 2112 is reduced, the air suction of the rest of the air suction holes 2112 is larger, the effect of absorbing the air on the surface of the pole piece 2 by the air suction holes 2112 is better, and the safety of battery production is improved.

Referring to fig. 1 to 3, in some embodiments, the shielding member 213 includes a shielding member body 2131 and a protrusion 2132, the shielding member body 2131 has a first surface 21311 facing away from the central axis of the suction roller 211, the first surface 21311 is a cambered surface centered on the central axis of the suction roller 211, the protrusion 2132 protrudes from the first surface 21311, and at least a portion of the protrusion 2132 is disposed on the suction hole 2112 to block the suction hole 2112.

In some embodiments, the shield body 2131 may be an arc plate, the first surface 21311 may be an arc surface centered on the central axis of the suction roller 211, the center of the first surface 21311 may overlap with the center of the outer peripheral surface of the suction roller 211, and the diameter of the first surface 21311 is smaller than the diameter of the outer peripheral surface of the suction roller 211.

In some embodiments, the shade 213 can have only the shade body 2131. The shield body 2131 corresponds to a part of the suction holes 2112, and the part of the suction holes 2112 may be suction holes 2112 which do not correspond to the pole piece 2, and the part of the suction holes 2112 may include a part of the suction holes 2112 which correspond to the pole piece 2. Wherein the shutter body 2131 separates the suction hole 2112 from a part of the accommodation chamber 2111.

In some embodiments, the shield 213 can include a shield body 2131 and a projection 2132. The protrusion 2132 may correspond to the shape and size of the suction hole 2112. The protrusion 2132 may partially protrude into or completely protrude into the suction hole 2112 to block the suction hole 2112, reducing the probability of the suction hole 2112 absorbing air.

In some embodiments, the protrusion 2132 may be a bead or the like.

In some embodiments, the shield body 2131 and the projection 2132 can be integrally formed or can be formed by gluing, welding, or the like.

According to the technical scheme provided by the embodiment of the application, at least part of the protrusion 2132 of the blocking piece is arranged at the air suction hole 2112, so that the probability of the air suction hole 2112 sucking air is further reduced, the effect of the air suction hole 2112 sucking the air on the surface of the pole piece 2 is better, and the safety of battery production is improved.

Referring to fig. 1 to 3, in some embodiments, the suction roller 211 includes a side plate 2113 and two end plates 2114, the side plate 2113 is disposed around the edge of the end plate 2114, the two end plates 2114 are disposed at two ends of the side plate 2113 in the axial direction of the suction roller 211, and the side plate 2113 and the two end plates 2114 define a receiving chamber 2111. The first sub-getter 21 further comprises a support frame 214, the support frame 214 is arranged on the two end plates 2114 in a penetrating manner so that the getter roller 211 is sleeved on the support frame 214, the getter roller 211 can rotate relative to the support frame 214, and the shielding member 213 is arranged on the support frame 214.

In some embodiments, with the direction of the central axis of the suction roller 211 as the projection direction, the projection of the side plate 2113 may be hollow circular, and the end plate 2114 may be circular.

In some embodiments, the support frame 214 is disposed through the two end plates 2114, and an axis of the support frame 214 may coincide with a central axis of the suction roller 211.

In some embodiments, the pole piece 2 is in a conveying state, when the pole piece 2 is wound around the suction roller 211, the conveying of the pole piece 2 drives the suction roller 211 to rotate around the supporting frame 214, and the shielding piece 213 is arranged on the supporting frame 214. The support 214 is stationary, i.e. the shutter 213 remains unchanged. When the pole piece 2 is wound around the outer peripheral surface of the suction roller 211, the pole piece 2 always corresponds to only a part of the outer peripheral surface of the corresponding suction roller 211, and the shielding member 213 always corresponds to the suction hole 2112 which does not correspond to the pole piece 2, so that the risk that the suction hole 2112 absorbs air to affect the suction hole 2112 to absorb the air on the surface of the pole piece 2 is reduced.

In some embodiments, the support frame 214 may be coupled to the end plate 2114 by a bearing, an outer circumferential surface of the bearing being coupled to the end plate 2114, and an inner circumferential surface of the bearing being coupled to the support frame 214. When the suction roller 211 is rotated by the pole piece 2, the end plate 2114 rotates to drive the outer peripheral surface of the bearing to rotate, and the inner peripheral surface of the bearing and the support frame 214 remain unchanged.

In some embodiments, the portion of the protrusion 2132 disposed in the suction hole 2112 may have a spherical shape so that the protrusion 2132 can be adjusted from one suction hole 2112 to another suction hole 2112 when the suction roller 211 rotates.

According to the technical scheme provided by the embodiment of the application, the shielding piece 213 is arranged on the supporting frame 214, the air suction roller 211 rotates relative to the supporting frame 214, namely, when the pole piece 2 drives the air suction roller 211 to rotate, the position of the shielding piece 213 is unchanged, the shielding piece 213 shields part of the air suction holes 2112, the probability of sucking air by the air suction holes 2112 is reduced, the air suction of the rest air suction holes 2112 is enabled to be larger, the effect of sucking air on the surface of the pole piece 2 by the air suction holes 2112 is enabled to be better, and the safety of battery production is improved.

Referring to fig. 1, and referring to fig. 4 and 5, fig. 4 is a schematic view of a second sub-getter and a third sub-getter according to some embodiments of the present application; fig. 5 is a schematic view of another view of a second sub-getter and a third sub-getter provided in some embodiments of the application. The arrows in the figure respectively correspond to the directions of the gas on the surfaces of the absorption pole pieces of the second sub-getter and the third sub-getter, and in order to conveniently show the internal structures of the second sub-getter and the third sub-getter, the outer wall of the second sub-getter and the outer wall of the third sub-getter are subjected to hiding treatment. In some embodiments, the getter 20 further includes a second sub-getter 22, the second sub-getter 22 is disposed at the output end 12 of the oven body 10, the second sub-getter 22 includes a second getter pipe 221, the second getter pipe 221 communicates with the interior of the oven body 10, the negative pressure mechanism 30 further includes a second sub-negative pressure mechanism 32, the second getter pipe 221 is connected to the second sub-negative pressure mechanism 32, and the second getter pipe 221 is used for absorbing the gas on the surface of the pole piece 2.

In some embodiments, the second sub-getter 22 may be a second getter duct 221, and one end of the second getter duct 221 communicates with the inside of the oven body 10, and the other end may face one surface of the pole piece 2 in the thickness direction.

In some embodiments, a second suction pipe 221 may be disposed at the output end 12 of the oven body 10, and the second sub-negative pressure mechanism 32 is connected to the second suction pipe 221, and provides suction to the second suction pipe 221 to absorb the gas on the surface of the pole piece 2.

In some embodiments, the length of the second suction conduit 221 may be 50cm, 100cm, 150cm, 200cm, etc.

In some embodiments, the width of the second suction duct 221 may be 20cm, 40cm, 60cm, 80cm, 100cm, etc.

In some embodiments, a second gas suction duct 221 may also be provided at the input end 11 of the oven body 10 to absorb the gas flowing out from the input end 11 of the oven body 10.

According to the technical scheme provided by the embodiment of the application, the second air suction pipeline 221 is arranged at the output end 12 of the oven body 10, absorbs the gas on the surface of the pole piece 2, reduces the risk that the gas on the surface of the pole piece 2 enters the external environment, and improves the safety of battery production.

Referring to fig. 4 and 5, in some embodiments, a first adsorbent material 2211 is disposed in the second air suction pipe 221, for filtering the air sucked by the second air suction pipe 221.

In some embodiments, a grill may be provided at the suction port of the second suction duct 221, and the first adsorbent material 2211 is disposed in the grill for filtering the gas sucked by the second suction duct 221.

In some embodiments, the first adsorbent material 2211 may be a zeolite, activated carbon, or the like.

According to the technical scheme provided by the embodiment of the application, the first adsorption material 2211 is arranged in the second air suction pipeline 221, the first adsorption material 2211 filters the air sucked by the second air suction pipeline 221, the risk that the air on the surface of the pole piece 2 damages workers is reduced, and the safety of battery production is improved.

Referring to fig. 1,4 and 5, in some embodiments, the getter 20 further includes a third sub-getter 23, the third sub-getter 23 is disposed at the output end 12 of the oven body 10, the third sub-getter 23 includes a third getter pipe 231, the third getter pipe 231 is communicated with the interior of the oven body 10, the third getter pipe 231 and the second getter pipe 221 are disposed at two sides of the pole piece 2 in the thickness direction, the negative pressure mechanism 30 further includes a third sub-negative pressure mechanism 33, the third getter pipe 231 is connected with the third sub-negative pressure mechanism 33, and the third getter pipe 231 is used for absorbing the gas on the surface of the pole piece 2.

In some embodiments, the third sub-getter 23 may include a third getter conduit 231. The third air suction duct 231 may have the same structure as the second air suction duct 221, and is disposed at both sides of the pole piece 2 in the thickness direction, respectively, with the second air suction duct 221. One end of the third air suction duct 231 communicates with the inside of the oven body 10, and the other end may face one surface of the pole piece 2 in the thickness direction.

In some embodiments, a third air suction pipe 231 may be disposed at the output end 12 of the oven body 10, and the third sub-negative pressure mechanism 33 is connected with the third air suction pipe 231, and provides suction force for the third air suction pipe 231 to absorb the air on the surface of the pole piece 2.

In some embodiments, the length of the third suction duct 231 may be 50cm, 100cm, 150cm, 200cm, etc.

In some embodiments, the width of the third suction duct 231 may be 20cm, 40cm, 60cm, 80cm, 100cm, etc.

In some embodiments, the suction port of the second suction duct 221 may completely correspond to the suction port of the third suction duct 231, and the distance between the suction port of the second suction duct 221 and the pole piece 2 may be the same as the distance between the suction port of the third suction duct 231 and the pole piece 2, so that the suction force of the second suction duct 221 to the pole piece 2 is approximately the same as the suction force of the third suction duct 231 to the pole piece 2, and the risk of shifting or deforming during transportation of the pole piece 2 is reduced.

In some embodiments, the suction port of the second suction duct 221 may correspond to the suction port portion of the third suction duct 231, and by changing the suction size of the second suction duct 221 or the suction size of the third suction duct 231, the measure of changing the suction size may be to change the caliber size of the suction port of the second suction duct 221 or the suction port of the third suction duct 231, change the distance between the suction port of the second suction duct 221 or the suction port of the third suction duct 231 and the pole piece 2, or the like. So that the suction force of the second suction duct 221 to the pole piece 2 is substantially the same as the suction force of the third suction duct 231 to the pole piece 2.

In some embodiments, a third air suction duct 231 may also be provided at the input end 11 of the oven body 10 to absorb the air flowing out from the input end 11 of the oven body 10.

According to the technical scheme provided by the embodiment of the application, the third air suction pipeline 231 and the second air suction pipeline 221 are respectively arranged at two sides of the pole piece 2 in the thickness direction, and respectively absorb the gases on the two surfaces of the pole piece 2 in the thickness direction, so that the risk that the gases on the surface of the pole piece 2 enter the external environment is further reduced, the risk that the gases on the surface of the pole piece 2 harm staff is reduced, and the safety of battery production is improved.

Referring to fig. 4 and 5, in some embodiments, a second adsorbing material 2311 is disposed in the third air suction pipe 231 for filtering the air sucked by the third air suction pipe 231.

In some embodiments, a grill may be provided at the suction port of the third suction duct 231, and the second adsorption material 2311 is provided in the grill for filtering the gas sucked by the third suction duct 231.

In some embodiments, the second adsorptive material 2311 may be a zeolite, activated carbon, or the like.

According to the technical scheme provided by the embodiment of the application, the second adsorption material 2311 is arranged in the third air suction pipeline 231, the second adsorption material 2311 filters the air sucked by the third air suction pipeline 231, the risk that the air on the surface of the pole piece 2 damages workers is reduced, and the safety of battery production is improved.

Referring to fig. 1, in some embodiments, the oven apparatus 1 further includes a cleaning device 40, and the negative pressure mechanism 30 further includes a fourth sub-negative pressure mechanism 34, where the fourth sub-negative pressure mechanism 34 is connected to the oven body 10 and the cleaning device 40, and is used for delivering the gas in the oven body 10 to the cleaning device 40.

In some embodiments, cleaning device 40 may be an exhaust gas recovery device that processes the gases within oven body 10 by condensation, adsorption, or chemical absorption.

In some embodiments, the fourth sub-negative pressure mechanism 34 connects the oven body 10 and the cleaning device 40, and serves to convey gas on one hand, and to provide negative pressure for the interior of the oven body 10 on the other hand, so as to reduce the outflow of gas originally inside the oven body 10.

In some embodiments, the fourth sub-negative pressure mechanism 34 may be the same as the first sub-negative pressure mechanism 31, the second sub-negative pressure mechanism 32, and the third sub-negative pressure mechanism 33, respectively, or may be different mechanisms.

According to the technical scheme provided by the embodiment of the application, the fourth sub-negative pressure mechanism 34 is connected with the oven body 10 and the cleaning device 40, so that the gas in the oven body 10 is conveyed to the cleaning device 40, the risk that the gas on the surface of the pole piece 2 enters the external environment is reduced, and the safety of battery production is improved.

The embodiment of the application also provides a battery production line, which comprises the oven equipment 1 of any embodiment.

Referring to fig. 1 to 5, in some embodiments, the oven apparatus 1 includes an oven body 10, a getter 20, and a negative pressure mechanism 30. The getter 20 may include a first sub-getter 21, a second sub-getter 22, and a third sub-getter 23. The second sub-getter 22 may be a second getter duct 221, and the third sub-getter 23 may be a third getter duct 231. The second air suction duct 221 and the third air suction duct 231 are both provided at the output end 12 of the oven body 10, and the second air suction duct 221 and the third air suction duct 231 correspond to both surfaces of the pole piece 2 in the thickness direction, respectively. After the pole piece 2 is output through the oven body 10, the second air suction duct 221 and the third air suction duct 231 respectively absorb the gases of both surfaces of the pole piece 2 in the thickness direction.

The first sub-getter 21 includes a getter roller 211 and a first getter duct 212. After the suction through the second suction duct 221 and the third suction duct 231, the pole piece 2 is wound around the suction roller 211. The suction roller 211 is a hollow roller having a housing chamber 2111, and an outer peripheral surface of the suction roller 211 is provided with suction holes 2112 communicating with the housing chamber 2111. The first suction duct 212 communicates with the accommodation chamber 2111 and the inside of the oven body 10 to absorb the gas of the surface of the pole piece 2 to the inside of the oven body 10 through the suction hole 2112, the accommodation chamber 2111 and the first suction duct 212.

Wherein the first sub-getter 21 further comprises a shutter 213, the shutter 213 comprising a shutter body 2131 and a protrusion 2132, the shutter body 2131 separating the suction hole 2112 not corresponding to the pole piece 2 from the receiving cavity 2111, the protrusion 2132 blocking the suction hole 2112 not corresponding to the pole piece 2.

In some embodiments, a negative pressure mechanism 30 is coupled to oven body 10 to provide negative pressure to first sub-getter 21, second sub-getter 22, and third sub-getter 23, respectively, to provide a getter power to absorb gases from the surface of pole piece 2.

According to the technical scheme provided by the embodiment of the application, the getter 20 is arranged at the downstream of the oven body 10 to absorb the gas on the surface of the pole piece 2, so that the risk that the gas on the surface of the pole piece 2 enters the external environment is reduced, the risk that the gas on the surface of the pole piece 2 damages workers is reduced, and the safety of battery production is improved.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (11)

1. An oven apparatus, comprising:

the oven body is used for drying the pole piece;

The air suction piece is arranged outside the oven body and downstream of the oven body along the conveying direction of the pole piece, and is configured to be capable of absorbing the gas on the surface of the pole piece processed by the oven body;

And the oven body and the air suction piece are respectively connected with the negative pressure mechanism, and the negative pressure mechanism is used for providing negative pressure.

2. Oven apparatus according to claim 1, characterized in that the suction piece comprises a first sub suction piece comprising a suction roller for transporting the pole piece and a first suction duct, the suction roller having a housing cavity, the outer circumferential surface of the suction roller being provided with suction holes communicating with the housing cavity, the negative pressure mechanism comprising a first sub negative pressure mechanism, one end of the first suction duct being connected with the first sub negative pressure mechanism, the other end being connected with the suction roller and communicating with the housing cavity.

3. Oven apparatus according to claim 2, characterized in that the number of suction holes is plural, the plural suction holes being arranged at intervals along the circumferential direction of the suction roll, the first sub-suction member further comprising a shielding member shielding part of the suction holes in the circumferential direction of the suction roll.

4. An oven apparatus according to claim 3, wherein the shutter includes a shutter body having a first surface facing away from a central axis of the suction roller, the first surface being an arc surface centered on the central axis of the suction roller, and a projection protruding from the first surface, at least part of the projection being provided to the suction hole to block the suction hole.

5. An oven apparatus according to claim 3, wherein the suction roll comprises a side plate and two end plates, the side plate being enclosed at the edges of the end plates, the two end plates being respectively arranged at both ends of the side plate in the axial direction of the suction roll, the side plate and the two end plates together defining the accommodation chamber;

The first sub-getter also comprises a support frame, wherein the support frame is arranged on the two end plates in a penetrating way so that the getter roller is sleeved on the support frame, the getter roller can rotate relative to the support frame, and the shielding piece is arranged on the support frame.

6. The oven apparatus of claim 1, wherein the getter further comprises a second sub getter disposed at an output end of the oven body, the second sub getter comprising a second getter conduit in communication with an interior of the oven body, the negative pressure mechanism further comprising a second sub negative pressure mechanism, the second getter conduit in communication with the second sub negative pressure mechanism, the second getter conduit for absorbing a gas from the pole piece surface.

7. Oven apparatus according to claim 6, characterized in, that a first sorption material is provided in the second suction duct for filtering the gas sucked in by the second suction duct.

8. The oven apparatus according to claim 6, wherein the getter further comprises a third sub-getter provided at an output end of the oven body, the third sub-getter comprising a third getter pipe communicated with an inside of the oven body, the third getter pipe and the second getter pipe being provided at both sides of the pole piece in a thickness direction thereof, respectively, the negative pressure mechanism further comprising a third sub-negative pressure mechanism, the third getter pipe being connected with the third sub-negative pressure mechanism, the third getter pipe being for absorbing a gas on a surface of the pole piece.

9. Oven apparatus according to claim 8, characterized in, that a second sorption material is provided in the third suction duct for filtering the gas sucked in by the third suction duct.

10. The oven apparatus of claim 1, further comprising a cleaning device, the negative pressure mechanism further comprising a fourth sub-negative pressure mechanism connecting the oven body and the cleaning device for delivering gas within the oven body to the cleaning device.

11. A battery production line comprising an oven arrangement according to any one of claims 1-10.