Disassembling device and disassembling method of battery pack

Abstract

The invention relates to the technical field of battery pack recycling, in particular to a battery pack disassembling device and a battery pack disassembling method. The battery pack disassembling device comprises a device body, a temperature control assembly and a conveying assembly, and a containing cavity is formed in the device body and used for containing a to-be-disassembled battery pack. And the temperature control assembly is arranged in the accommodating cavity, and the temperature control assembly is used for adjusting the temperature in the accommodating cavity, so that the temperature in the accommodating cavity reaches a preset peptizing temperature. And the conveying assembly is arranged on the device body and is used for conveying dispergation fluid into the accommodating cavity. According to the battery pack disassembling device and the battery pack disassembling method provided by the invention, the disassembling efficiency of the battery pack is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery pack recycling, and in particular to a battery pack disassembly device and a battery pack disassembly method. Background Art

[0002] A battery pack consists of multiple battery modules. The cells in the battery module are bonded together with structural adhesive. When recycling the cells in the battery pack, the battery pack needs to be disassembled.

[0003] In the prior art, a battery pack is generally placed in a soaking tank filled with a disintegrating agent, and the battery pack is soaked in the disintegrating agent to dissolve the structural adhesive inside the battery pack.

[0004] However, the disassembly efficiency of the above-mentioned battery pack disassembly method is low. Summary of the Invention

[0005] The present application provides a battery pack disassembly device and a battery pack disassembly method, which improve the disassembly efficiency of the battery pack.

[0006] In a first aspect, the present application provides a battery pack disassembly device, comprising: a device body, a temperature control component, and a conveying component. The device body is provided with a accommodating cavity for placing the battery pack to be disassembled.

[0007] The temperature control component is arranged in the accommodating cavity and is used to adjust the temperature in the accommodating cavity so that the temperature in the accommodating cavity reaches a preset degumming temperature.

[0008] The delivery component is arranged on the device body and is used for delivering the disintegrating fluid into the accommodating cavity.

[0009] In one possible implementation, in the battery pack disassembly device provided in the present application, the temperature control assembly includes a heat sink and a liquid inlet pipe, and at least a portion of the liquid inlet pipe is disposed inside the heat sink.

[0010] The liquid inlet pipe is used to transport a heat source or a cold source to adjust the temperature in the accommodating cavity through the heat dissipation member.

[0011] In one possible implementation, the battery pack disassembly device provided in the present application, the temperature control component also includes a control valve, which is arranged on the liquid inlet pipe, and the control valve is used to control the liquid inlet pipe to transport a heat source or a cold source.

[0012] In a possible implementation, the battery pack disassembly device provided in the present application has a first detection member provided on the device body, and the first detection member is used to detect the temperature in the accommodating cavity.

[0013] In a possible implementation, in the battery pack disassembly device provided in the present application, the conveying assembly includes a first conveying member, and the first conveying member is connected to the accommodating chamber.

[0014] The first conveying member is used for being externally connected to the cell pole piece baking section so as to input the first degumming fluid discharged from the cell pole piece baking section into the accommodating cavity.

[0015] In a possible implementation, the battery pack disassembly device provided in the present application has a debonding tank provided in the accommodating chamber, and the debonding tank is used to accommodate the battery pack to be disassembled and at least part of the first debonding fluid.

[0016] In a possible implementation, the battery pack disassembly device provided in the present application further includes a flow guide, which is disposed in the accommodating cavity and is located between the first conveying member and the debonding tank.

[0017] The temperature control component is arranged on a side of the guide member facing the first conveying member, and the guide member is used to guide at least part of the first degumming fluid into the degumming tank.

[0018] In a possible implementation, the battery pack disassembly device provided in the present application has a plurality of guide holes provided on the guide member, and the projection of each guide hole along the height direction of the device body is located within the debonding groove.

[0019] In a possible implementation, the battery pack disassembly device provided in the present application, the conveying assembly also includes a second conveying member, the second conveying member is arranged between the guide member and the degumming tank, and the second conveying member is used to convey the second degumming fluid into the degumming tank.

[0020] In a possible implementation, in the battery pack disassembly device provided in the present application, a plurality of conveying parts are provided on the second conveying member, and a projection of each conveying part along the height direction of the device body is located within the debonding tank.

[0021] In a possible implementation, the battery pack disassembly device provided in the present application further includes a connecting member, which is connected to a side of the guide member facing away from the temperature control component, and the second conveying member is connected to the connecting member.

[0022] In a possible implementation, the battery pack disassembly device provided in the present application has a plurality of hanging portions provided on the connecting member, and the second conveying member is hung on the hanging portions.

[0023] In a possible implementation, the battery pack disassembly device provided in the present application further includes an ultrasonic generator, which is disposed in the accommodating cavity and connected to the debonding tank.

[0024] In one possible implementation, in the battery pack disassembly device provided in the present application, the ultrasonic generating component is an ultrasonic vibration box.

[0025] In one possible implementation, the battery pack disassembly device provided in the present application further includes a recovery component, which includes a recovery pump and an air intake pipe. The recovery pump is connected to the accommodating chamber, and the recovery pump is used to extract the remaining part of the degumming fluid in the accommodating chamber.

[0026] The air intake pipe is in communication with the accommodating chamber and is used for conveying air into the accommodating chamber to maintain the pressure in the accommodating chamber.

[0027] In a possible implementation, the battery pack disassembly device provided in the present application is further provided with a second detection member on the device body, and the second detection member is used to detect the pressure in the accommodating cavity.

[0028] In one possible implementation, the battery pack disassembly device provided in the present application has a visual window provided on the device body.

[0029] In a second aspect, the present application provides a battery pack disassembly method, using any of the battery pack disassembly devices provided in the first aspect above. The battery pack disassembly method includes:

[0030] Place the battery pack to be disassembled in the accommodating cavity of the battery pack disassembly device.

[0031] The conveying component of the battery pack disassembly device is started to transport the debonding fluid into the accommodating cavity.

[0032] Start the temperature control component of the battery pack disassembly device to adjust the temperature in the accommodating cavity so that the temperature in the accommodating cavity reaches the preset debonding temperature.

[0033] The present application provides a battery pack disassembly device and a battery pack disassembly method. The battery pack disassembly device is provided with a device body, a temperature control component and a conveying component. The device body has a accommodating cavity, which is used to place the battery pack to be disassembled. The conveying component is provided on the device body and is used to convey a debonding fluid into the accommodating cavity. The debonding fluid is used to dissolve the structural adhesive of the battery pack to be disassembled. The temperature control component is provided in the accommodating cavity and is used to adjust the temperature in the accommodating cavity so that the temperature reaches a preset debonding temperature, which can accelerate the movement speed of the debonding molecules of the debonding fluid and improve the efficiency of the debonding fluid in dissolving the structural adhesive, thereby improving the disassembly efficiency of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 Schematic diagram of the structure of the battery pack disassembly device provided in the embodiment of the present application Figure 1 ;

[0036] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0037] Figure 3 for Figure 1 Schematic diagram of the structure from another angle;

[0038] Figure 4 for Figure 1 A structural diagram from another angle;

[0039] Figure 5 for Figure 2 Schematic diagram of the structure of the medium temperature control component;

[0040] Figure 6 for Figure 5 Schematic diagram of the structure from another angle;

[0041] Figure 7 for Figure 5 A structural diagram from another angle;

[0042] Figure 8 for Figure 2 Schematic diagram of the structure of the middle guide piece;

[0043] Figure 9 for Figure 2 Schematic diagram of the structure of the second conveying member and the connecting member Figure 1 ;

[0044] Figure 10 for Figure 2 Schematic diagram of the structure of the second conveying member and the connecting member Figure 2 ;

[0045] Figure 11 for Figure 2 Schematic diagram of the structure of the second conveying member and the connecting member Figure 3 ;

[0046] Figure 12 for Figure 2 Schematic diagram of the structure of the second conveying member and the connecting member Figure 4 ;

[0047] Figure 13 A flowchart of a battery pack disassembly method provided in an embodiment of the present application.

[0048] Description of reference numerals:

[0049] 100 - device body; 110 - receiving chamber; 120 - dissolving tank; 121 - bottom plate; 130 - first detection member; 140 - second detection member; 150 - visual window; 160 - door;

[0050] 200- conveying assembly; 210- first conveying member; 220- second conveying member; 221- conveying portion;

[0051] 300-temperature control assembly; 310-heat dissipation component; 320-liquid inlet pipe; 330-control valve;

[0052] 400- flow guide; 410- flow guide hole;

[0053] 500-connecting piece; 510-hook-up part;

[0054] 600-ultrasonic generating parts;

[0055] 700-Recovery assembly; 710-Recovery pump; 720-Intake pipe.

[0056] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0057] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art may adjust them as needed to suit specific applications.

[0058] Secondly, it should be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0059] Then, it should be noted that, in the description of this application, the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more.

[0061] As shown in the background art, in the prior art, a battery pack is generally placed in a soaking tank filled with a disintegrant, and the battery pack is soaked in the disintegrant to dissolve the structural adhesive inside the battery pack.

[0062] However, the efficiency of the dissolving agent in dissolving the structural adhesive at room temperature is low, resulting in low disassembly efficiency of the battery pack disassembly method.

[0063] Based on this, the present application provides a battery pack disassembly device and a battery pack disassembly method. The battery pack disassembly device is provided with a device body, a temperature control component and a conveying component. The device body has a accommodating cavity, and the accommodating cavity is used to place the battery pack to be disassembled. The conveying component is provided on the device body, and the conveying component is used to convey a debonding fluid into the accommodating cavity, and the debonding fluid is used to dissolve the structural adhesive of the battery pack to be disassembled. The temperature control component is provided in the accommodating cavity, and the temperature control component is used to adjust the temperature in the accommodating cavity so that the temperature reaches the preset debonding temperature, which can accelerate the movement speed of the debonding molecules of the debonding fluid, improve the efficiency of the debonding fluid in dissolving the structural adhesive, and thus improve the disassembly efficiency of the battery pack.

[0064] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0065] Reference Figure 1 and Figure 2 As shown, the battery pack disassembly device provided in the present application includes: a device body 100, a temperature control component 300 and a conveying component 200. The device body 100 has a accommodating cavity 110, which is used to place the battery pack to be disassembled.

[0066] The temperature control component 300 is disposed in the accommodating chamber 110 and is used to adjust the temperature in the accommodating chamber 110 so that the temperature in the accommodating chamber 110 reaches a preset debonding temperature.

[0067] The delivery component 200 is disposed on the device body 100 and is used to deliver the disintegrating fluid into the accommodating chamber 110 .

[0068] It should be noted that different structural adhesives require different disintegrators. The cells within a battery module are typically bonded together using polyurethane adhesive. During battery pack repair or recycling, disintegrators for polyurethane adhesive can include dichloromethane, dimethylformamide (DMF), and N-methylpyrrolidone (NMP).

[0069] Therefore, the disintegration fluid in the embodiment of the present application can be one of dichloromethane, dimethylformamide (DMF) and N-methylpyrrolidone (NMP). As long as the disintegration fluid can dissolve polyurethane glue, the embodiment of the present application does not impose too many restrictions on this.

[0070] It should also be noted that different disintegrators have different suitable disintegration temperatures. For example, the suitable disintegration temperature for N-methylpyrrolidone (NMP) is 45°C to 55°C. This embodiment of the present application uses N-methylpyrrolidone (NMP) as an example to illustrate the battery pack disassembly device, so the preset disintegration temperature of the receiving cavity 110 within the device body 100 is 45°C to 55°C.

[0071] Illustratively, the debonding fluid may be a debonding gas or a debonding liquid, and the embodiments of the present application do not impose any particular limitation on this.

[0072] It should also be noted that increasing temperature accelerates the thermal motion of the dissolving molecules, allowing them to penetrate the interior of the structural adhesive more quickly. This also softens the polymer chains of the structural adhesive, reducing its viscosity and promoting chemical bond breakage, thereby improving dissolution efficiency. However, excessively high temperatures can cause the dissolving fluid to evaporate too quickly or damage the battery. Therefore, dissolving the structural adhesive within the applicable temperature range (i.e., the preset dissolution temperature) can improve the dissolution efficiency of the structural adhesive and enhance the safety of the dissolution process.

[0073] It can be understood that by providing a accommodating chamber 110 in the device body 100, the accommodating chamber 110 provides a accommodating space for the battery pack or battery module to be removed. In a specific implementation, a forklift can be used to place the battery pack or battery module to be removed into the accommodating chamber 110, or a slide rail can be used to transport the battery pack or battery module to be removed into the accommodating chamber 110. A door body 160 can be provided on the device body 100, and a handle can be installed on the door body 160. By opening the door body 160, the battery pack to be removed can be placed in the accommodating chamber 110; by closing the door body 160, the accommodating chamber 110 can be isolated from the outside world, thereby achieving a closed environment and preventing the debonding fluid from overflowing.

[0074] Specifically, a delivery assembly 200 is provided on the device body 100 to deliver a disintegrating fluid into the receiving chamber 110. The disintegrating fluid can dissolve the structural adhesive of the battery pack to be disassembled. A temperature control assembly 300 is provided within the receiving chamber 110 to regulate the temperature within the receiving chamber 110 to a preset disintegration temperature. This accelerates the movement of the disintegrating fluid's disintegrating molecules, improving the disintegrating fluid's efficiency in dissolving the structural adhesive, thereby enhancing the efficiency of battery pack disassembly.

[0075] In some embodiments, reference Figure 2 and Figure 5 As shown, the temperature control assembly 300 includes a heat dissipation element 310 and a liquid inlet pipe 320 , and at least a portion of the liquid inlet pipe 320 is disposed inside the heat dissipation element 310 .

[0076] The liquid inlet pipe 320 is used to transport a heat source or a cold source to adjust the temperature in the accommodating cavity 110 through the heat dissipation element 310 .

[0077] Specifically, when the temperature within the containment chamber 110 is lower than the preset debonding temperature, a heat source (the temperature of the heat source is higher than the preset debonding temperature) can be transported within the liquid inlet pipe 320. The heat source can transfer heat to the liquid inlet pipe 320, which then conducts heat from the inner wall to the outer wall through thermal conductivity. Because at least a portion of the liquid inlet pipe 320 passes through the heat sink 310, the outer wall of the liquid inlet pipe 320 conducts heat to the heat sink 310. When the temperature of the heat sink 310 rises, the surrounding cold air expands and becomes lighter due to the heat, forming an upward airflow, which promotes air circulation within the containment chamber 110 (thermal convection). At the same time, the surface of the heat sink 310 also directly radiates heat, thereby increasing the temperature within the containment chamber 110 so that the temperature within the containment chamber 110 reaches the preset debonding temperature.

[0078] When the temperature in the accommodating cavity 110 is higher than the preset degumming temperature, a cold source (the temperature of the cold source is lower than the preset degumming temperature) can be transported in the liquid inlet pipe 320. The cold source flows through the liquid inlet pipe inside the heat sink 310. The surface temperature of the heat sink 310 is relatively low, and the heat in the accommodating cavity 110 can be absorbed through heat conduction. At the same time, the surrounding hot air cools and sinks after contacting the cold surface, forming a reverse convection cycle, thereby reducing the temperature in the accommodating cavity 110, so that the temperature in the accommodating cavity 110 reaches the preset degumming temperature.

[0079] For example, the heat sink 310 may be a steel heat sink, and the liquid inlet pipe 320 may be a copper pipe or a plastic pipe.

[0080] It should be noted that the heat source may be hot water and the cold source may be cold water.

[0081] In some embodiments, reference Figures 5 to 7 As shown, the temperature control component 300 further includes a control valve 330 , which is disposed on the liquid inlet pipe 320 . The control valve 330 is used to control the liquid inlet pipe 320 to transport a heat source or a cold source.

[0082] In a specific implementation, the control valve 330 can be connected to a cold water pipeline and a hot water pipeline, and the switching of hot and cold water or the flow rate adjustment can be controlled by rotating the control valve 330, which is easy to operate. The control valve 330 is a technology well known to those skilled in the art and will not be described in detail.

[0083] For example, the control valve 330 may be an electric ball valve or other valves, and the embodiment of the present application does not impose too many restrictions on this.

[0084] In some embodiments, a first detecting element 130 is provided on the device body 100 , and the first detecting element 130 is used to detect the temperature in the accommodating cavity 110 .

[0085] In a specific implementation, the first detection component 130 can be a temperature sensor, which can be connected to the control valve 330 for communication. The temperature sensor detects the temperature inside the accommodating chamber 110 and transmits the temperature signal to the control valve 330. The control valve 330 automatically adjusts the valve opening by receiving the signal from the temperature sensor, controls the switching of the hot and cold water pipelines, or adjusts the mixing ratio of the hot and cold water.

[0086] In some embodiments, reference Figures 2 to 4 As shown, the conveying assembly 200 includes a first conveying member 210 , and the first conveying member 210 is communicated with the accommodating chamber 110 .

[0087] The first conveying member 210 is used for being externally connected to the cell electrode piece baking section so as to input the first debonding fluid discharged from the cell electrode piece baking section into the accommodating cavity 110 .

[0088] It should be noted that baking the cell electrode sheets is a critical process in lithium-ion battery production, primarily used to remove residual solvent and moisture from the electrode sheets after coating, ensuring the dryness of the electrode sheets. Because the high-temperature gas generated by baking the cell electrode sheets contains N-methylpyrrolidone (NMP), the first conveyor 210 in this embodiment of the present application is externally connected to the cell electrode sheet baking section. This allows the gaseous N-methylpyrrolidone (NMP) exhausted from the cell electrode sheet baking section to be transferred into the accommodating cavity 110, meaning that the first disintegrating fluid is N-methylpyrrolidone (NMP).

[0089] By inputting the gaseous N-methylpyrrolidone (NMP) discharged from the cell electrode baking section into the accommodating cavity 110, a debonding fluid for dissolving the structural adhesive is provided for the battery pack to be disassembled, thereby achieving secondary utilization of resources and energy.

[0090] It should also be noted that the gas generated by baking the battery cell electrodes is high-temperature (90°C to 110°C). Once this high-temperature gas enters the accommodating cavity 110, it raises the temperature within the accommodating cavity 110. At this point, the temperature within the accommodating cavity 110 is higher than the preset dissolution temperature (45°C to 55°C). A cold source can be delivered to the liquid inlet pipe 320 to lower the temperature within the accommodating cavity 110 so that the temperature within the accommodating cavity 110 reaches the preset dissolution temperature. During this process, condensation occurs. Both the condensed liquid N-methylpyrrolidone (NMP) and the cooled gaseous N-methylpyrrolidone (NMP) can dissolve the structural adhesive of the battery pack to be disassembled.

[0091] In a specific implementation, a valve may be provided on the first conveying member 210 . When the valve is opened, the first conveying member 210 conveys the first debonding fluid into the accommodating chamber 110 . When the valve is closed, the air inlet pipe 720 stops conveying the first debonding fluid into the accommodating chamber 110 .

[0092] In some embodiments, reference Figure 2 As shown, a debonding tank 120 is provided in the accommodating cavity 110 , and the debonding tank 120 is used to accommodate the battery pack to be disassembled and at least part of the first debonding fluid.

[0093] It should be noted that the first disassembly fluid contained in disassembly tank 120 includes condensed liquid N-methylpyrrolidone (NMP) and partially cooled gaseous N-methylpyrrolidone (NMP). By containing both the battery pack to be disassembled and the condensed liquid N-methylpyrrolidone (NMP) in disassembly tank 120, the condensed liquid N-methylpyrrolidone (NMP) soaks into the battery pack to be disassembled, ensuring full contact between the condensed liquid N-methylpyrrolidone (NMP) and the battery pack to be disassembled, thereby improving the dissolution efficiency of the structural adhesive.

[0094] In a specific implementation, the bottom of the debonding tank 120 has a bottom plate 121 , and the bottom plate 121 of the debonding tank 120 can be connected to the inner wall of the device body 100 by welding or bolts.

[0095] In some embodiments, reference Figure 2 and Figure 8 As shown, the battery pack disassembly device further includes a flow guide 400 , which is disposed in the accommodating cavity 110 and located between the first conveying member 210 and the disassembly tank 120 .

[0096] The temperature control assembly 300 is disposed on a side of the guide member 400 facing the first conveying member 210 . The guide member 400 is used to guide at least a portion of the first debonding fluid into the debonding tank 120 .

[0097] The guide member 400 is located between the first conveying member 210 and the degumming tank 120. In a specific implementation, the guide member 400 can be set below the first conveying member 210, and the degumming tank 120 can be set below the guide member 400. In this way, the guide member 400 can guide the condensed liquid N-methylpyrrolidone (NMP) and the cooled gaseous N-methylpyrrolidone (NMP), so that the liquid N-methylpyrrolidone (NMP) and the gaseous N-methylpyrrolidone (NMP) can accurately enter the degumming tank 120.

[0098] For example, the peripheral side of the guide member 400 can be connected to the inner wall of the device body 100 by welding or bolts, or can be connected in a certain way, and the embodiment of the present application does not impose too many restrictions on this.

[0099] The temperature control component 300 is disposed on a side of the flow guide 400 facing the first conveying member 210 . In a specific implementation, the heat dissipation member 310 of the temperature control component 300 may be fixed on the flow guide 400 .

[0100] In some embodiments, reference Figure 2 and Figure 8 As shown, a plurality of guide holes 410 are provided on the guide member 400 , and the projection of each guide hole 410 along the height direction of the device body 100 is located within the dissolving tank 120 .

[0101] As can be understood, the diversion holes 410 provide a flow channel for the condensed liquid N-methylpyrrolidone (NMP) and the cooled gaseous N-methylpyrrolidone (NMP). Each diversion hole 410, as projected along the height of the device body 100, is located within the disintegration tank 120, smoothly directing the condensed liquid N-methylpyrrolidone (NMP) and the cooled gaseous N-methylpyrrolidone (NMP) into the disintegration tank 120.

[0102] Exemplarily, the guide hole 410 may be a circular hole or a rectangular hole, or a through hole of other shapes, and the embodiment of the present application does not impose too many restrictions on this.

[0103] In some embodiments, reference Figure 2 and Figure 9 As shown, the conveying assembly 200 further includes a second conveying member 220 , which is disposed between the flow guide 400 and the debonding tank 120 . The second conveying member 220 is used to convey the second debonding fluid into the debonding tank 120 .

[0104] In this way, by providing the second conveying member 220 , the second dissolving fluid can be conveyed into the dissolving tank 120 in a timely and quantitative manner, thereby ensuring the continuity and reliability of the dissolving process of the structural adhesive of the battery pack to be disassembled.

[0105] For example, the second debonding fluid may be dichloromethane, dimethylformamide (DMF) and N-methylpyrrolidone (NMP), or may be other debonding agents, which are not particularly limited in the present embodiment.

[0106] In some embodiments, reference Figure 2 and Figure 9 As shown, the second conveying member 220 is provided with a plurality of conveying portions 221 , and a projection of each conveying portion 221 along the height direction of the device body 100 is located within the dissolving tank 120 .

[0107] Thus, by providing the conveying portion 221 on the second conveying member 220, the conveying portion 221 provides an output channel for the second debonding fluid in the second conveying member 220. The projection of each conveying portion 221 along the height direction of the device body 100 is located within the debonding tank 120, and the conveying portion 221 can smoothly transport the second debonding fluid into the debonding tank 120.

[0108] In some embodiments, reference Figure 2 and Figure 10 As shown, the battery pack disassembly device further includes a connecting member 500 , which is connected to the side of the guide member 400 facing away from the temperature control assembly 300 , and the second conveying member 220 is connected to the connecting member 500 .

[0109] It is understandable that the second conveying member 220 can be installed and fixed by providing the connecting member 500. For example, the connecting member 500 can be connected to the guide member 400 by welding or bolts, or by other means, which is not limited in this embodiment of the present application.

[0110] It should be noted that the number of connecting members 500 can be two, and the two connecting members 500 are arranged at intervals to jointly connect the second conveying member 220 to the guide member 400; the number of connecting members 500 can also be more than two, and the embodiment of the present application does not impose too many restrictions on this.

[0111] In some embodiments, reference Figure 9 、 Figure 11 and Figure 12 As shown, a plurality of hanging portions 510 are provided on the connecting member 500 , and the second conveying member 220 is hung on the hanging portions 510 .

[0112] In a specific implementation, the hanging portion 510 may be a hook, and the second conveying member 220 is hung on the hook, which is easy to operate and improves the efficiency of assembly and disassembly.

[0113] In some embodiments, reference Figure 2 As shown, the battery pack disassembly device further includes an ultrasonic generator 600 , which is disposed in the accommodating cavity 110 and is connected to the disassembly tank 120 .

[0114] It should be noted that an ultrasonic generator 600 is provided on the disassembly tank 120 , which can cause the first disassembly fluid in the disassembly tank 120 to produce a cavitation effect, thereby helping to destroy the agglomerated structure of the structural adhesive, thereby accelerating the first disassembly fluid to dissolve the structural adhesive.

[0115] In a specific implementation, the ultrasonic generator 600 can be set on the bottom plate 121 of the degumming tank 120. For example, the ultrasonic generator 600 can be set inside the degumming tank 120 or outside the degumming tank 120. The number of ultrasonic generators 600 can be one, two, three, four or more, and the embodiments of the present application do not impose too many restrictions on this.

[0116] In some embodiments, reference Figure 2 As shown, the ultrasonic generating element 600 is an ultrasonic vibration box.

[0117] It should be noted that the ultrasonic vibrator is a device that uses high-frequency ultrasonic waves (usually 20kHz-40kHz) to generate mechanical vibration energy. The ultrasonic vibrator consists of an ultrasonic transducer (piezoelectric ceramics or magnetostrictive elements), a horn and a tool head. It can convert electrical energy into high-frequency mechanical vibrations (micrometer-level amplitude) through the ultrasonic transducer, which is then amplified by the horn and transmitted to the contact surface, generating cavitation effects and high-frequency shear forces in liquid or solid media.

[0118] In some embodiments, reference Figure 2As shown, the battery pack disassembly device also includes a recovery component 700, which includes a recovery pump 710 and an air intake pipe 720. The recovery pump 710 is connected to the accommodating chamber 110, and the recovery pump 710 is used to extract the remaining part of the degumming fluid in the accommodating chamber 110.

[0119] The air intake pipe 720 is in communication with the accommodating chamber 110 , and is used to transport air into the accommodating chamber 110 to maintain the pressure in the accommodating chamber 110 .

[0120] In a specific implementation, the recovery pump 710 can be connected to an external condensation tower. The recovery pump 710 pumps the remaining gaseous N-methylpyrrolidone (NMP) in the accommodating chamber 110 into the condensation tower for recycling, thereby improving resource utilization.

[0121] It should be noted that when the recovery pump 710 is used to extract the remaining gaseous N-methylpyrrolidone (NMP) in the accommodating chamber 110, air is transported into the accommodating chamber 110 through the air inlet pipe 720, which can maintain the pressure in the accommodating chamber 110, prevent negative pressure, and avoid affecting the device body 100 and other components in the accommodating chamber 110.

[0122] In a specific implementation, a valve may be provided on the air intake pipe 720 . When the valve is opened, the air intake pipe 720 delivers air into the accommodating chamber 110 . When the valve is closed, the air intake pipe 720 stops delivering air into the accommodating chamber 110 .

[0123] In some embodiments, reference Figure 2 and Figure 3 As shown, the device body 100 is further provided with a second detecting member 140 , which is used to detect the pressure in the accommodating cavity 110 .

[0124] Exemplarily, the second detecting member 140 may be a pressure sensor.

[0125] In some embodiments, reference Figure 2 As shown, a viewing window 150 is provided on the device body 100 .

[0126] It is understandable that the operator can observe the dissolution of the battery pack to be removed in the accommodating cavity 110 through the visual window 150. Exemplarily, the visual window 150 can be a transparent glass window.

[0127] Reference Figure 13 As shown, the present application also provides a battery pack disassembly method, using a battery pack disassembly device, and the battery pack disassembly method includes:

[0128] S101: Place the battery pack to be disassembled in the accommodating chamber 110 of the battery pack disassembly device.

[0129] Specifically, a housing cavity 110 is provided within the device body 100, providing space for the battery pack to be removed. A door 160 can be provided on the device body 100. Opening the door 160 facilitates placement of the battery pack to be removed within the housing cavity 110. Closing the door 160 isolates the housing cavity 110 from the outside world, creating a sealed environment and preventing the disassembly fluid from escaping.

[0130] S102 , starting the conveying assembly 200 of the battery pack disassembly device to enable the conveying assembly 200 to convey the disassembling fluid into the accommodating chamber 110 .

[0131] Specifically, a delivery assembly 200 is provided on the device body 100 , and the delivery assembly 200 is used to deliver a debonding fluid into the accommodating cavity 110 , and the debonding fluid can dissolve the structural adhesive of the battery pack to be disassembled.

[0132] S103 , starting the temperature control assembly 300 of the battery pack disassembly device to adjust the temperature in the accommodating chamber 110 so that the temperature in the accommodating chamber 110 reaches a preset debonding temperature.

[0133] Specifically, by setting a temperature control component 300 in the accommodating cavity 110, the temperature control component 300 adjusts the temperature in the accommodating cavity 110 so that the temperature in the accommodating cavity 110 reaches a preset debonding temperature, thereby accelerating the movement speed of the debonding molecules of the debonding fluid, and improving the efficiency of the debonding fluid in dissolving the structural adhesive, thereby improving the disassembly efficiency of the battery pack.

[0134] In some embodiments, the valve on the first conveyor 210 is opened, allowing the first conveyor 210 to transport high-temperature gaseous N-methylpyrrolidone (NMP) (90°C to 110°C) discharged from the cell electrode baking section into the accommodating chamber 110. The first detection member 130 detects that the temperature within the accommodating chamber 110 is higher than the preset dissolution temperature (45°C to 55°C). The control valve 330 controls the liquid inlet pipe 320 to deliver cold water, which then flows through the heat sink 310 to lower the temperature within the accommodating chamber 110 to the preset dissolution temperature (45°C to 55°C).

[0135] During the cooling process, condensation occurs. The condensed liquid N-methylpyrrolidone (NMP) and the cooled gaseous N-methylpyrrolidone (NMP) flow through the flow guide 400 into the disassembly tank 120. The condensed liquid N-methylpyrrolidone (NMP) and the cooled gaseous N-methylpyrrolidone (NMP) dissolve the battery pack or battery module to be disassembled in the disassembly tank 120. An ultrasonic vibration box at the bottom of the disassembly tank 120 accelerates the disassembly process by using ultrasonic waves.

[0136] The operator can observe the sol in the receiving chamber 110 through the viewing window 150. After the sol is disassembled, the valve on the first conveyor 210 is closed, the recovery pump 710 is turned on, and the valve on the air inlet pipe 720 is opened to recover the gaseous N-methylpyrrolidone (NMP) in the receiving chamber 110. After recovery is complete, the door 160 is opened and the disassembled battery is removed.

[0137] In some embodiments, the valve on the first conveying member 210 is closed, and the first detecting member 130 detects that the temperature inside the accommodating chamber 110 is lower than the preset degumming temperature (45°C~55°C). The control valve 330 controls the liquid inlet pipe 320 to deliver hot water, and the hot water raises the temperature inside the accommodating chamber 110 to the preset degumming temperature (45°C~55°C) through the heat dissipation member 310.

[0138] The second delivery pipe is externally connected to liquid N-methylpyrrolidone (NMP) and delivers the liquid N-methylpyrrolidone (NMP) to the dissolution tank 120 below. The ultrasonic vibration box at the bottom of the dissolution tank 120 can accelerate the dissolution speed through ultrasonic waves.

[0139] The operator can observe the sol in the receiving chamber 110 through the viewing window 150. After the sol is disassembled, the valve on the first conveyor 210 is closed, the recovery pump 710 is turned on, and the valve on the air inlet pipe 720 is opened to recover the gaseous N-methylpyrrolidone (NMP) in the receiving chamber 110. After the gas is exhausted, the door 160 is opened and the disassembled battery is removed.

[0140] It will be understood by those skilled in the art that the battery pack disassembly device and the battery pack disassembly method provided in the present application are as follows: the battery pack disassembly device is provided with a device body 100, a temperature control component 300 and a conveying component 200; the device body 100 has a accommodating chamber 110, and the accommodating chamber 110 is used to place the battery pack to be disassembled. The conveying component 200 is provided on the device body 100, and the conveying component 200 is used to convey a debonding fluid into the accommodating chamber 110, and the debonding fluid is used to dissolve the structural adhesive of the battery pack to be disassembled. The temperature control component 300 is provided in the accommodating chamber 110, and the temperature control component 300 is used to adjust the temperature in the accommodating chamber 110 so that the temperature reaches a preset debonding temperature, which can accelerate the movement speed of the debonding molecules of the debonding fluid, improve the efficiency of the debonding fluid in dissolving the structural adhesive, and thus improve the disassembly efficiency of the battery pack.

[0141] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0142] It will be understood that the various numerical numbers involved in the embodiments of the present application are merely distinctions for the convenience of description and are not intended to limit the scope of the embodiments of the present application.

[0143] Thus far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present application.

Claims

1. A battery pack disassembly device, characterized in that: include: A device body (100), wherein the device body (100) has a receiving cavity (110), and the receiving cavity (110) is used to place a battery pack to be removed; A temperature control component (300) is disposed in the accommodating cavity (110), and the temperature control component (300) is used to adjust the temperature in the accommodating cavity (110) so that the temperature in the accommodating cavity (110) reaches a preset debonding temperature; A delivery component (200) is provided on the device body (100), and the delivery component (200) is used to deliver the disintegrating fluid into the accommodating chamber (110).

2. The battery pack disassembly device according to claim 1, characterized in that: The temperature control assembly (300) comprises a heat sink (310) and a liquid inlet pipe (320), and at least a portion of the liquid inlet pipe (320) is disposed inside the heat sink (310); The liquid inlet pipe (320) is used to transport a heat source or a cold source to adjust the temperature in the accommodating cavity (110) through the heat dissipation element (310).

3. The battery pack disassembly device according to claim 2, characterized in that: The temperature control component (300) further comprises a control valve (330), wherein the control valve (330) is arranged on the liquid inlet pipe (320), and the control valve (330) is used to control the liquid inlet pipe (320) to transport the heat source or the cold source.

4. The battery pack disassembly device according to claim 3, characterized in that: A first detection member (130) is provided on the device body (100), and the first detection member (130) is used to detect the temperature in the accommodating cavity (110).

5. The battery pack disassembly device according to any one of claims 1 to 4, characterized in that: The conveying assembly (200) comprises a first conveying member (210), wherein the first conveying member (210) is in communication with the accommodating cavity (110); The first conveying member (210) is used for externally connecting to the cell electrode baking section to input the first debonding fluid discharged from the cell electrode baking section into the accommodating cavity (110).

6. The battery pack disassembly device according to claim 5, characterized in that: A debonding tank (120) is provided in the accommodating cavity (110), and the debonding tank (120) is used to accommodate the battery pack to be disassembled and at least part of the first debonding fluid.

7. The battery pack disassembly device according to claim 6, characterized in that: It also includes a flow guide (400), the flow guide (400) being arranged in the accommodating cavity (110), and the flow guide (400) being located between the first conveying member (210) and the dissolving tank (120); The temperature control component (300) is arranged on a side of the guide member (400) facing the first conveying member (210), and the guide member (400) is used to guide at least part of the first degumming fluid into the degumming tank (120).

8. The battery pack disassembly device according to claim 7, characterized in that: The flow guide (400) is provided with a plurality of flow guide holes (410), and the projection of each of the flow guide holes (410) along the height direction of the device body (100) is located within the dissolution tank (120).

9. The battery pack disassembly device according to claim 7, characterized in that: The conveying assembly (200) further comprises a second conveying member (220), the second conveying member (220) being arranged between the flow guide member (400) and the degumming tank (120), the second conveying member (220) being used to convey a second degumming fluid into the degumming tank (120).

10. The battery pack disassembly device according to claim 9, characterized in that: The second conveying member (220) is provided with a plurality of conveying portions (221), and the projection of each conveying portion (221) along the height direction of the device body (100) is located within the dissolving tank (120).

11. The battery pack disassembly device according to claim 9, characterized in that: It also includes a connecting member (500), the connecting member (500) being connected to a side of the flow guide member (400) facing away from the temperature control component (300), and the second conveying member (220) being connected to the connecting member (500).

12. The battery pack disassembly device according to claim 11, characterized in that: The connecting member (500) is provided with a plurality of hanging portions (510), and the second conveying member (220) is hung on the hanging portions (510).

13. The battery pack disassembly device according to claim 6, characterized in that: It also includes an ultrasonic wave generating element (600), which is arranged in the accommodating cavity (110) and is connected to the dissolving tank (120).

14. The battery pack disassembly device according to claim 13, characterized in that: The ultrasonic generating element (600) is an ultrasonic vibration box.

15. The battery pack disassembly device according to any one of claims 1 to 4, characterized in that: The apparatus further comprises a recovery component (700), the recovery component (700) comprising a recovery pump (710) and an air intake pipe (720), the recovery pump (710) being connected to the accommodating chamber (110), and the recovery pump (710) being used to extract the remaining portion of the debonding fluid in the accommodating chamber (110); The air intake pipe (720) is in communication with the accommodating chamber (110), and the air intake pipe (720) is used to transport air into the accommodating chamber (110) to maintain the pressure in the accommodating chamber (110).

16. The battery pack disassembly device according to claim 15, characterized in that: A second detection member (140) is also provided on the device body (100), and the second detection member (140) is used to detect the pressure in the accommodating cavity (110).

17. The battery pack disassembly device according to any one of claims 1 to 4, characterized in that: A visual window (150) is provided on the device body (100).

18. A method for disassembling a battery pack, characterized in that: Using the battery pack disassembly device according to any one of claims 1 to 17, the battery pack disassembly method includes: Placing the battery pack to be disassembled in the accommodating cavity (110) of the battery pack disassembly device; Starting the conveying component (200) of the battery pack disassembly device to enable the conveying component (200) to convey the disassembling fluid into the accommodating cavity (110); The temperature control component (300) of the battery pack disassembly device is activated to adjust the temperature in the accommodating cavity (110) so that the temperature in the accommodating cavity reaches a preset debonding temperature.

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