Waste battery treatment device

Abstract

The utility model discloses a waste battery treatment device, and relates to the technical field of waste recycling. The waste battery treatment device comprises a shell, a granulation assembly, a screening assembly and a roasting assembly, the granulation assembly, the screening assembly and the roasting assembly are arranged in the shell, a feeding port is formed in the top of the shell, and the granulation assembly is arranged at the top of the shell and corresponds to the feeding port; the screening assembly is arranged below the granulation assembly, a first switch piece is arranged between the granulation assembly and the screening assembly, and the first switch piece is used for controlling granulated materials to enter the screening assembly; and the roasting assembly is arranged below the screening assembly, a second switch piece is arranged between the screening assemblies, and the second switch piece is used for controlling screened materials to enter the roasting assembly. According to the waste battery treatment device provided by the invention, the processes of crushing, screening and roasting of the waste batteries can be automatically realized, and the recycling process of the waste lithium batteries is optimized.

Description

Technical Field

[0001] This application relates to the technical field of battery recycling, and particularly to a waste battery treatment device. Background Art

[0002] As a high-performance energy battery, lithium batteries have become the first choice for new energy electric vehicles. With the rapid development of the new energy vehicle industry, the demand for lithium batteries will grow at a high speed, and the recycling of waste lithium batteries has also become an important issue.

[0003] Currently, the common waste battery recycling technology is to first disassemble, crush, and sort the battery to obtain lithium-containing powder, and then roast and leach the lithium-containing powder to extract high-value lithium elements. After the battery powder is sorted and before roasting, it usually needs to be stored and / or transported over a long distance, which will inevitably cause secondary agglomeration and caking of the powder. Direct roasting is likely to cause insufficient and uneven roasting, which will in turn affect the subsequent leaching effect. In addition, the current crushing, screening, and roasting processes are carried out independently, and each process uses separate equipment to complete the corresponding operations. This not only takes up a large amount of equipment space, but also requires additional powder conveying equipment, resulting in a complex recycling system and high waste battery recycling costs. Utility Model Content

[0004] In view of this, this application provides a waste battery treatment device, aiming to solve one of the technical problems in the above background art.

[0005] To achieve the above object, the technical solution adopted in this application is as follows:

[0006] In the first aspect, an embodiment of this application provides a waste battery treatment device, including a housing and the following components disposed inside the housing:

[0007] A granulation assembly, an inlet is provided at the top of the housing, and the granulation assembly is disposed at the top of the housing and corresponds to the inlet;

[0008] A screening assembly, disposed below the granulation assembly, and a first switching member is provided between the granulation assembly and the screening assembly, and the first switching member is used to control the granulated material to enter the screening assembly;

[0009] A roasting assembly, disposed below the screening assembly, and a second switching member is provided between the screening assembly and the screening assembly, and the second switching member is used to control the screened material to enter the roasting assembly.

[0010] In one of the embodiments of the first aspect, the waste battery treatment device includes a top cover, the top cover is removably disposed at the inlet, the granulation assembly includes a grinding member and a rotating member, and the rotating member connects the top cover and the grinding member and drives the grinding member to rotate.

[0011] In one embodiment of the first aspect, the grinding member has a hollow structure.

[0012] In one embodiment of the first aspect, the first switch member is disposed below the grinding member. When the first switch member is closed, the first switch member, the outer shell and the top cover form a grinding chamber, and the grinding member is disposed in the grinding chamber.

[0013] In one embodiment of the first aspect, the screening assembly includes a first receiving member, which is disposed opposite to the first switch member. When the first switch member is opened, the first receiving member is in communication with the first switch member.

[0014] In one embodiment of the first aspect, the screening assembly further includes:

[0015] A filtering member, which is disposed below the first receiving member;

[0016] A vibrating member, which drives the filtering member to vibrate.

[0017] In one embodiment of the first aspect, the roasting assembly includes a second receiving member, which is disposed below the filtering member, and a second switch member, which is disposed below the second receiving member.

[0018] In one embodiment of the first aspect, the roasting assembly further includes:

[0019] A stirring member, which is disposed at the bottom of the outer shell and below the second switch member;

[0020] A heat-conducting wall, which surrounds the periphery of the stirring member and is disposed below the second receiving member. When the second switch member is closed, the second switch member, the heat-conducting wall and the outer shell form a roasting chamber. When the second switch member is opened, the heat-conducting wall is in communication with the second switch member.

[0021] In one embodiment of the first aspect, the stirring member includes a motor and a plurality of fan blades. The motor drives the fan blades to rotate, and the fan blades have a downwardly inclined surface.

[0022] In one embodiment of the first aspect, the roasting assembly further includes:

[0023] A heating member, which is disposed outside the heat-conducting wall;

[0024] A heat-insulating wall is disposed around the periphery of the heating element and below the filtering element. The heat-insulating wall, the heat-conducting wall, the second receiving member, and the housing are connected to form a sealed space.

[0025] Compared with the prior art, the beneficial effects of the present application are as follows: The present application provides a waste battery treatment device, including a housing and a granulation assembly, a screening assembly, and a roasting assembly disposed inside the housing. Among them, a feed inlet is provided at the top of the housing, and the granulation assembly is disposed at the top of the housing and corresponds to the feed inlet. In this way, partially / partly caked waste battery powder can be first pulverized to form a fully dispersed powdery material.

[0026] The screening assembly is disposed below the granulation assembly to screen the pulverized material after granulation. A first switch member is provided between the granulation assembly and the screening assembly, and the first switch member is used to control the granulated material to enter the screening assembly. After the partially / partly caked waste battery powder is fully pulverized and dispersed, it is then screened, improving the processing efficiency. The material passing through the screen is subjected to subsequent roasting, and the material remaining on the screen can be recovered by opening the first switch member and the feed inlet of the housing, and then re-fed into the feed inlet for pulverization after recovery, improving the recovery rate.

[0027] The roasting assembly is disposed below the screening assembly, and the roasting assembly roasts the screened powder. A second switch member is provided between the screening assembly and the roasting assembly, and the second switch member is used to control the screened material to enter the roasting assembly. When enough powder is collected, the powder is then fed into the roasting assembly for roasting, reducing energy consumption.

[0028] The waste battery treatment device of the present application integrates dispersion, screening, and roasting in the same device, with a simple and compact structure and no need for an intermediate transportation link. Before roasting, the waste battery powder undergoes sufficient and efficient pulverization and dispersion pretreatment, enabling more sufficient and uniform subsequent roasting, which is beneficial to the efficient extraction of valuable elements in the subsequent leaching process and the reduction of industrialization costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 Shows a schematic structural diagram of a waste battery treatment device in some embodiments of the present application;

[0031] Figure 2 Shows a schematic assembly structure diagram of a top cover and a granulation assembly in some embodiments of the present application;

[0032] Figure 3 The structural schematic diagram of the stirring member in some embodiments of the present application is shown.

[0033] Description of main component symbols: 100 - waste battery treatment device; 110 - housing; 111 - feed inlet; 120 - top cover; 130 - granulation component; 131 - grinding member; 132 - rotating member; 140 - first switching member; 141 - first valve flap; 142 - first rotating shaft; 151 - first receiving member; 150 - screening component; 152 - filtering member; 1521 - metal filter screen; 153 - vibrating member; 1531 - fixing frame; 1532 - vibrator; 160 - roasting component; 161 - second receiving member; 170 - second switching member; 171 - second valve flap; 172 - second rotating shaft; 162 - stirring member; 1621 - motor; 1622 - fan blade; 163 - heat conducting wall; 164 - heating member; 165 - heat insulating wall; I - grinding chamber; II - storage chamber; III - roasting chamber; IV - heating area. Detailed implementation manners

[0034] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0037] In this application, unless otherwise clearly specified or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In this application, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0039] As Figure 1 shown, an embodiment of the present application provides a waste battery treatment device 100.

[0040] The waste battery treatment device 100 includes a housing 110 and a granulation component 130, a screening component 150 and a roasting component 160 disposed inside the housing 110.

[0041] The housing 110 has good sealing performance, so that the powder is not easy to escape from the inside, reducing dust pollution.

[0042] In some embodiments, a feed inlet 111 is provided at the top of the housing 110, and a discharge outlet is provided at the bottom of the housing 110.

[0043] The granulation component 130 is disposed at the top of the housing 110 and corresponds to the feed inlet 111. In this way, the partially / partly caked waste battery powder can be first crushed to form a powder with better dispersibility.

[0044] The screening component 150 is disposed below the granulation component 130 to screen the powder. The undersize is subjected to subsequent roasting, and the oversize can be recycled by opening the first switch member 140 and the feed inlet 111 of the housing 110. After recycling, it is put into the feed inlet 111 again for crushing, improving the recovery rate of battery waste, and also optimizing the subsequent roasting and leaching processes to increase the benefits.

[0045] A first switch member 140 is provided between the granulation assembly 130 and the screening assembly 150. The first switch member 140 is used to control the granulated material to enter the screening assembly 150, so that the waste battery powder with partial / locally agglomerated blocks is first sufficiently pulverized and dispersed and then screened, improving the processing efficiency.

[0046] The roasting assembly 160 is arranged below the screening assembly 150. The roasting assembly 160 roasts the screened powder to optimize the extraction and recovery process of valuable elements.

[0047] A second switch member 170 is provided between the screening assembly 150 and the screening assembly 150. The second switch member 170 is used to control the screened material to enter the roasting assembly 160. When enough powder is collected, the powder is then put into the roasting assembly 160 for roasting, reducing energy consumption and improving the roasting efficiency.

[0048] As Figure 1 and Figure 2 shown, in some embodiments, the waste battery processing device 100 includes a top cover 120. The top cover 120 is removably arranged at the feed inlet 111. The granulation assembly 130 includes a grinding member 131 and a rotating member 132. The rotating member 132 connects the top cover 120 and the grinding member 131 and drives the grinding member 131 to rotate.

[0049] In this way, when adding materials is needed, the top cover 120 and the grinding member 131 are integrally removed from the feed inlet 111, improving the feeding efficiency.

[0050] The grinding member 131 is generally olive-shaped, and its longitudinal section is oval.

[0051] After putting the lithium-containing material into the grinding chamber I, relying on the rotation of the olive-shaped grinding member 131, the agglomerated battery waste is rolled and ground between the bottom surface of the grinding chamber I and the first switch member 140. Since the grinding member 131 is olive-shaped, some battery waste can also move outward between the grinding member 131 and the first switch member 140, causing the agglomerated battery waste to impact the inner wall of the outer shell 110 on the side of the grinding chamber I, accelerating the formation of a more dispersive powder.

[0052] It should be understood that in other embodiments, a high-speed rotating grinding medium (usually spherical steel balls) can also be used to pulverize the agglomerated battery waste.

[0053] In some embodiments, the grinding member 131 is of a hollow structure. Some of the battery powder obtained by pretreatment is relatively soft and not high in hardness. The grinding member 131 is of a hollow structure to adjust the weight of the grinding member 131 so that the powder reaches a suitable particle size.

[0054] In some embodiments, the first switch member 140 is disposed below the grinding member 131. When the first switch member 140 is closed, the first switch member 140, the housing 110, and the top cover 120 form a grinding chamber I, and the grinding member 131 is disposed within the grinding chamber I.

[0055] As Figure 1 shown, the first switch member 140 includes a first valve flap 141 and a first rotating shaft 142. The first rotating shaft 142 can be rotated manually and / or by an electric control method, and the first rotating shaft 142 drives the first valve flap 141 to rotate.

[0056] When the first switch member 140 is opened, the first valve flap 141 is tilted, and the powder produced after grinding slides into the lower first receiving member 151.

[0057] When the first switch member 140 is closed, the first valve flap 141, the housing 110, and the top cover 120 form a grinding chamber I, preventing the unpulverized and undispersed battery waste from entering the first receiving member 151.

[0058] In some embodiments, the screening assembly 150 includes a first receiving member 151. The first receiving member 151 is disposed opposite to the first switch member 140. When the first switch member 140 is opened, the first receiving member 151 communicates with the first switch member 140.

[0059] As Figure 1 shown, the first receiving member 151 is in the shape of a hollow frustum or a hollow cylinder.

[0060] The top end of the first receiving member 151 is disposed below the first valve flap 141 and is fixed to the inner wall of the housing 110. The size of the opening at the top end of the first receiving member 151 is larger than that of the first valve flap 141, so that all the powder in the grinding chamber I enters the first receiving member 151.

[0061] In some embodiments, as Figure 1 shown, the top end of the first receiving member 151 is sealingly connected to the inner wall of the housing 110, preventing the powder from escaping from the first receiving member 151 and causing the powder to deposit within the housing 110 and affect the operation of other components.

[0062] In some embodiments, the screening assembly 150 further includes a filtering member 152 and a vibrating member 153.

[0063] As Figure 1 shown, the filtering member 152 is disposed below the first receiving member 151, enabling all the powder in the first receiving member 151 to pass through the filtering member 152 for filtration.

[0064] The large-particle powder is retained on the filtering member 152, and the small-particle powder enters the roasting chamber III for roasting, improving the extraction efficiency of lithium elements.

[0065] In some embodiments, the filter member 152 includes at least two metal filter meshes 1521. The multiple metal filter meshes 1521 are arranged at intervals from top to bottom, and the mesh number of each metal filter mesh 1521 can be set as required.

[0066] For example, the mesh number of the upper metal filter mesh 1521 can be smaller than that of the lower metal filter mesh 1521, so that the upper metal filter mesh 1521 performs a coarse screening on the powder material, and the lower metal filter mesh 1521 performs a fine screening on the powder material.

[0067] The vibrating member 153 drives the filter member 152 to vibrate. The vibrating member 153 includes a fixing frame 1531 and a vibrator 1532. The fixing frame 1531 has a hollow cylindrical structure, and each metal filter mesh 1521 is detachably fixed on the fixing frame 1531.

[0068] The vibrator 1532 is fixed on the outer shell 110. The output end of the vibrator 1532 is connected to the fixing frame 1531, driving the fixing member to vibrate and accelerating the screening speed of the powder material.

[0069] In some embodiments, as Figure 1 shown, the heat insulation wall 165 needs to be heat-insulated, so the heat insulation wall 165 has a certain thickness. The bottom of the fixing frame 1531 is erected above the heat insulation wall 165, leaving a space for the fixing frame 1531 to move left and right. When the vibrator 1532 drives the fixing frame 1531 to vibrate left and right, the edge of the metal filter mesh 1521 will not exceed the outer peripheral edge of the heat insulation wall 165, so that the powder material will not fall into the interior of the outer shell 110 and affect the operation of other components.

[0070] In addition, by sealingly connecting the upper end of the second receiving member 161 to the inner peripheral edge of the heat insulation wall 165, all the screened powder material enters the second receiving member 161, improving the collection efficiency of the powder material.

[0071] In some embodiments, the roasting assembly 160 includes a second receiving member 161. The second receiving member 161 is disposed below the filter member 152, and the second switching member 170 is disposed below the second receiving member 161.

[0072] As Figure 1 shown, the second switching member 170 includes a second valve flap 171 and a second rotating shaft 172. The second rotating shaft 172 can be rotated manually and / or electrically controlled, and the second rotating shaft 172 drives the second valve flap 171 to rotate.

[0073] When the second switching member 170 is opened, the second valve flap 171 is tilted, and the screened powder material slides into the lower heat conduction wall 163.

[0074] When the second switching member 170 is closed, the second valve flap 171 and the second receiving member 161 form a storage chamber II for collecting powder materials. After sufficient powder materials are collected, roasting is carried out, which reduces energy consumption and improves the roasting efficiency.

[0075] The second receiving member 161 is in a hollow frustum shape or a hollow cylindrical shape.

[0076] The top end of the second receiving member 161 is arranged below the filtering member 152, so that the sieved powder materials all enter the second receiving member 161.

[0077] In some embodiments, the roasting assembly 160 further includes a stirring member 162 and a heat conducting wall 163.

[0078] The stirring member 162 is arranged at the bottom end of the outer shell 110 and below the second switching member 170, and is used for turning over the powder materials to enable sufficient roasting of the powder materials.

[0079] As Figure 1 and Figure 3 shown, in some embodiments, the stirring member 162 includes a motor 1621 and a plurality of fan blades 1622. The motor 1621 drives the fan blades 1622 to rotate. The fan blades 1622 have downwardly inclined surfaces, so that there is an included angle α between the fan blades 1622 and the bottom surface of the outer shell 110, satisfying 10° ≤ α ≤ 75°. α can be different values. For example, when the number of fan blades is 6, the α values of each fan blade are 10°, 20°, 30°, 40°, 50°, 60° respectively. Different angles are set between the fan blades 1622 and the bottom surface of the outer shell 110, which not only enables the fan blades 1622 not to contact the bottom surface of the outer shell 110, keeps the rotation of the fan blades 1622 smooth, but also can cover more stirring spaces, makes the temperature of the powder materials uniform during the roasting process, and when oxidative roasting and / or roasting assisted by additives are required, can be in full contact with oxygen in the air and / or roasting additives, optimizing the roasting process.

[0080] In some embodiments, the fan blades 1622 are detachable. In this way, when discharging materials is needed, the discharging port on the outer shell 110 is opened, the fan blades 1622 are removed, the roasted materials can be quickly removed, and the outside air can enter the heat conducting wall 163 to supplement oxygen and enable the organic matters volatilized during the roasting process to escape.

[0081] In addition, when the second valve flap 171 is opened, the air in the outer shell 110 enters the heat conducting wall 163 to supplement oxygen and improve the roasting effect.

[0082] Preferably, as Figure 1As shown, intake ports 1121 and outlet ports 1131 are provided at the bottom of the outer shell 110 at intervals. The intake port 1121 or the outlet port 1131 is provided on the circumference of the fan blade. The intake port 1121 is used to provide oxygen for roasting, and the outlet port 1131 is used to balance the pressure in the roasting chamber.

[0083] The outer shell 110 further includes an intake pipe 112 provided at the intake port 1121. The end of the intake pipe 112 extends above the roasting chamber III, which is conducive to the uniform distribution of oxygen in the air in the roasting chamber III and improves the roasting effect.

[0084] The outer shell 110 further includes an outlet pipe 113 provided at the outlet port 1131. The end of the outlet pipe 113 extends above the roasting chamber III, which avoids blocking the outlet pipe 113 when the fan blade 1622 stirs the powder material, and can also enable the organic matter volatilized during the roasting process to escape, avoiding pressure buildup in the roasting chamber III.

[0085] It should be understood that the top heights of the intake pipe 112 and the outlet pipe 113 should be set as required to avoid interference between the rotation of the second valve flap 171 and the intake pipe 112 or the outlet pipe 113.

[0086] The heat-conducting wall 163 surrounds the circumference of the stirring member 162 and is provided below the second receiving member 161. When the second switch member 170 is closed, the second valve flap 171, the heat-conducting wall 163 and the outer shell 110 form the roasting chamber III. When the second switch member 170 is opened, the heat-conducting wall 163 and the second switch member 170 are communicated.

[0087] In some embodiments, the roasting assembly 160 further includes a heating member 164 and a heat-insulating wall 165.

[0088] The heating member 164 is provided on the outer side of the heat-conducting wall 163.

[0089] Exemplarily, the heating member 164 is a heating wire, and the heat-conducting wall 163 is made of a metal material. In this way, when the second valve flap 171 is closed, the heat generated by the heating member 164 is transferred to the roasting chamber III through the metal wall, and the temperature in the roasting chamber III is uniform everywhere.

[0090] In some embodiments, a temperature sensor may also be provided on the inner side of the heat-conducting wall 163. The temperature sensor is electrically connected to the heating member 164 and is used to control the start-stop state of the heating member 164.

[0091] The heat-insulating wall 165 surrounds the circumference of the heating member 164, improves the utilization rate of heat, and reduces energy consumption.

[0092] Such as Figure 1As shown, in this embodiment, the heat insulation wall 165 is disposed below the filter element 152. The heat conduction wall 163, the second valve flap 171, and the housing 110 enclose to form a roasting chamber III. The heat insulation wall 165, the heat conduction wall 163, the second receiving member 161, and the housing 110 are connected to form a heating zone IV. Moreover, the second receiving member 161, the second valve flap 171, and the housing 110 are made of heat-insulating materials, which can avoid the escape of powder materials from affecting the operation of the heating element 164. While extending the service life of the heating element 164, the heat is isolated within the roasting chamber III and the heating zone IV, preventing heat from overflowing and being lost, and at the same time reducing the impact of high temperature on other working areas.

[0093] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0094] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A waste battery processing device, characterized in that: The invention comprises a housing and: A granulation component, wherein a feed port is provided on the top of the shell, and the granulation component is arranged on the top of the shell and corresponds to the feed port; A screening component is arranged below the granulating component, and a first switch is arranged between the granulating component and the screening component, and the first switch is used to control the granulated material to enter the screening component; The roasting assembly is arranged below the screening assembly, and a second switch is arranged between the screening assembly and the screening assembly, and the second switch is used to control the screened material to enter the roasting assembly.

2. The waste battery processing device according to claim 1, characterized in that: The waste battery processing device includes a top cover, which is removably arranged on the feed port. The granulation component includes a grinding part and a rotating part, and the rotating part connects the top cover and the grinding part and drives the grinding part to rotate.

3. The waste battery processing device according to claim 2 is characterized in that: The grinding piece is a hollow structure.

4. The waste battery processing device according to claim 2, characterized in that: The first switch component is disposed below the grinding component. When the first switch component is closed, the first switch component, the housing and the top cover form a grinding chamber, and the grinding component is disposed in the grinding chamber.

5. The waste battery processing device according to claim 2, characterized in that: The screening assembly includes a first receiving member, which is arranged opposite to the first switch member. When the first switch member is turned on, the first receiving member is connected to the first switch member.

6. The waste battery processing device according to claim 5, characterized in that: The screening assembly further comprises: A filter element, wherein the filter element is disposed below the first receiving element; A vibrating member drives the filter member to vibrate.

7. The waste battery processing device according to claim 6, characterized in that: The roasting assembly comprises a second receiving member, the second receiving member is arranged below the filter member, and the second switch member is arranged below the second receiving member.

8. The waste battery processing device according to claim 7, characterized in that: The baking assembly also includes: A stirring member, the stirring member is arranged at the bottom of the housing and is located below the second switch member; The heat-conducting wall is arranged around the stirring member and is arranged below the second receiving member. When the second switch member is closed, the second switch member, the heat-conducting wall and the outer shell form a roasting chamber. When the second switch member is opened, the heat-conducting wall and the second switch member are connected.

9. The waste battery processing device according to claim 8, characterized in that: The stirring member includes a motor and a plurality of blades. The motor drives the blades to rotate. The blades have a downwardly inclined surface.

10. The waste battery processing device according to claim 8, characterized in that: The baking assembly also includes: A heating element, wherein the heating element is arranged outside the heat-conducting wall; The heat insulating wall is arranged around the heating element and below the filter element. The heat insulating wall, the heat conducting wall, the second receiving element and the outer shell are connected to form a sealed space.

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