Adhesive layer disassembling method and adhesive layer disassembling system of battery
By applying a second adhesive layer on the battery cell and forming a disassembly channel, and using a polymer solution or a disassembly agent to weaken the adhesion, the risk of damage during disassembly of the battery cell is resolved, and convenient and reliable adhesive layer disassembly is achieved.
Patent Information
- Application Number
- CN202410457877.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2025-10-24
AI Technical Summary
In the prior art, improper operation during disassembly of a battery cell can easily cause damage to the battery, resulting in low operational reliability.
A second adhesive layer is applied to the outside of the first adhesive layer to be disassembled, and a disassembly channel is formed after the second adhesive layer is cured. By weakening or destroying the adhesion of the first adhesive layer, the first adhesive layer is detached from the battery cell and disassembled using disassembly parts such as polymer solution or debonding agent.
The risk of damage to the battery cell during disassembly is reduced, the convenience and reliability of operation are improved, and the glue layer can be disassembled without removing the entire battery cell.
Smart Images
Figure CN120834299A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of batteries, in particular to a battery glue layer disassembling method and a battery glue layer disassembling system. BACKGROUND
[0002] With the popularization and promotion of new energy vehicles, the charging and discharging performance, endurance and other performance of new energy vehicles are increasingly attracting people's attention and attention.
[0003] The battery is composed of a box body and a plurality of battery monomers accommodated in the box body, and the battery monomers are adhered to the bottom of the box body by structural glue. When the battery needs to be maintained or overhauled, the battery monomers need to be taken out from the box body, and the structural glue on the taken-out battery monomers needs to be disassembled. In the prior art, the structural glue is usually made to fall off from the battery monomers by using mechanical disassembly method after freezing the battery monomers, which is easy to cause damage to the battery due to improper operation, and the operation reliability is low. SUMMARY
[0004] Therefore, it is necessary to provide a battery glue layer disassembling method and a battery glue layer disassembling system to solve the problem of low operation reliability in disassembling the glue layer of the battery.
[0005] A battery glue layer disassembling method comprises the following steps: obtaining a battery monomer and exposing a first glue layer to be disassembled; placing a strip-shaped object on one side of the battery monomer having the first glue layer; applying a second glue layer on the side of the battery monomer having the first glue layer, and completely wrapping the strip-shaped object with the second glue layer; in the case that the second glue layer is completely cured, extracting the strip-shaped object and forming a disassembly channel in the second glue layer; and disassembling the disassembly channel to make the first glue layer fall off from the battery monomer. The battery glue layer disassembling method described above applies the second glue layer on the first glue layer to be disassembled, forms the disassembly channel after the second glue layer is cured, and disassembles the disassembly channel to make the first glue layer fall off from the battery monomer, i.e. the adhesion of the first glue layer is weakened or damaged to disassemble the first glue layer, which can reduce the risk of damage to the battery monomer during disassembly, disassemble the glue layer without removing the entire battery monomer, and facilitate the convenience and reliability of operation.
[0006] In some embodiments, the step of disassembling the disassembly channel to make the first glue layer fall off from the battery monomer comprises: injecting a disassembly member into the disassembly channel, causing volume expansion of the disassembly member, and causing the second glue layer and the first glue layer to be strained to make the first glue layer fall off from the battery monomer. In this way, the adhesion of the first glue layer can be weakened or damaged by the disassembly member to disassemble the first glue layer, which can reduce the risk of damage to the battery monomer during disassembly, and facilitate the convenience and reliability of operation.
[0007] In some embodiments, the disassembling agent is a polymer solution or an expanding agent. In this way, the adhesion of the first adhesive layer can be weakened or destroyed by the disassembling agent to disassemble the first adhesive layer, reducing the risk of damage to the battery cell during disassembly, and facilitating the convenience and reliability of the operation.
[0008] In some embodiments, the expanding agent includes any one of a sodium salt of polyacrylic acid, a potassium salt of polyacrylic acid, a polyacrylic acid amide, or a super absorbent resin powder. In this way, the expanding agent can weaken or destroy the first adhesive layer, making the disassembly of the first adhesive layer convenient and reliable.
[0009] In some embodiments, the polymer solution includes any one of a single-component polyurethane foaming agent, a two-component polyurethane foaming agent, or a two-component silicone foaming agent. In this way, the polymer solution can expand in volume under the condition of normal temperature or thermal initiation, facilitating the convenience and reliability of the operation.
[0010] In some embodiments, the step of disassembling the disassembly channel to cause the first adhesive layer to fall off the battery cell includes: injecting a debonding agent into the disassembly channel, dissolving the second adhesive layer and the first adhesive layer by the debonding agent, and causing the first adhesive layer to fall off the battery cell. In this way, the adhesion of the first adhesive layer can be destroyed by the debonding agent to disassemble the first adhesive layer, reducing the risk of damage to the battery cell during disassembly, and facilitating the convenience and reliability of the operation.
[0011] In some embodiments, the debonding agent includes any one of toluene, xylene, phenol, m-cresol, tetrahydrofuran, N-N-dimethylformamide, N-methyl pyrrolidone, dimethyl sulfoxide, ethyl acetate, or butyl acetate. In this way, the debonding agent can decompose or remove the adhesive layer, making the disassembly of the first adhesive layer convenient and reliable.
[0012] In some embodiments, the step of placing the strip-shaped object on the side of the battery cell having the first adhesive layer further includes: covering the surface of the strip-shaped object with an auxiliary release agent. In this way, the adhesion between the strip-shaped object and the second adhesive layer can be reduced, so that the strip-shaped object can be easily pulled out of the solidified second adhesive layer.
[0013] In some embodiments, the auxiliary release agent includes a release agent or a Teflon tape. In this way, the auxiliary release agent can be conveniently covered on the surface of the strip-shaped object, so that the strip-shaped object can be easily pulled out of the solidified second adhesive layer.
[0014] In some embodiments, the first adhesive layer and the second adhesive layer are adhesives of the same material. In this way, the first adhesive layer and the second adhesive layer can be firmly adhered, thereby facilitating the falling off of the first adhesive layer from the battery.
[0015] In some embodiments, the strip-shaped object is made of metal. In this way, the adhesion between the strip-shaped object and the second adhesive layer can be reduced, so that the strip-shaped object can be easily pulled out of the second adhesive layer after curing.
[0016] In some embodiments, the disassembly channel extends along a first direction, which is the width direction of the battery cell; in the first direction, the size of the disassembly channel is equal to the size of the battery cell. In this way, in the first direction, the size of the disassembly channel is equal to the size of the battery cell, and under the condition that the second adhesive layer does not collapse after the strip-shaped object is pulled out, the volume of the disassembly channel can be as large as possible to facilitate disassembly of the adhesive layer.
[0017] In some embodiments, in a second direction, which is the length direction of the battery, the size of the disassembly channel is at least 1 / 3 of the size of the battery cell. In this way, under the condition that the second adhesive layer does not collapse after the strip-shaped object is pulled out, the volume of the disassembly channel can be as large as possible to facilitate disassembly of the adhesive layer.
[0018] In some embodiments, the disassembly channel is located in the middle region of the side of the battery cell having the first adhesive layer. In this way, the probability of the second adhesive layer collapsing after the strip-shaped object is pulled out can be reduced, and the adhesive layer can be easily disassembled.
[0019] In some embodiments, the number of disassembly channels includes at least two, and each disassembly channel is distributed side by side and spaced apart on the side of the battery cell having the first adhesive layer. In this way, under the condition that the second adhesive layer collapses after the strip-shaped object is pulled out, the adhesive layer can be easily disassembled at different positions.
[0020] A battery adhesive layer disassembly system using the above-mentioned battery adhesive layer disassembly method. The above-mentioned battery adhesive layer disassembly system can disassemble the adhesive layer without removing the entire battery cell, which is beneficial to improve the convenience and reliability of the operation. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 A schematic diagram of a power consumption device is provided for some embodiments of the present application.
[0022] Figure 2 An exploded view of a battery is provided for some embodiments of the present application.
[0023] Figure 3 A schematic diagram of a battery and a second adhesive layer is provided for some embodiments of the present application.
[0024] Figure 4 A schematic diagram of a battery and a disassembly channel is provided for some embodiments of the present application.
[0025] Figure 5 A schematic diagram of a battery and a strip-shaped object is provided for some embodiments of the present application.
[0026] Figure 6 A flowchart of a method for disassembling a battery is provided for some embodiments of the present application.
[0027] Figure 7 A flowchart of a method for disassembling a battery is provided for some embodiments of the present application. Figure 6 A flowchart of a method for disassembling a battery is provided for some embodiments of the present application.
[0028] Figure 8 A flowchart of a method for disassembling a battery is provided for some embodiments of the present application. Figure 6 A flowchart of a method for disassembling a battery is provided for some embodiments of the present application.
[0029] Figure 9 A flowchart of a method for disassembling a battery is provided for some embodiments of the present application. Figure 6 A flowchart of a method for disassembling a battery is provided for some embodiments of the present application.
[0030] Reference signs:
[0031] 10, vehicle; 11, controller; 12, motor; 20, battery; 21, box; 22, battery cell; 21a, first part; 21b, second part; 30, side with first adhesive layer; 40, strip; 50, second adhesive layer; 51, disassembly channel. DETAILED DESCRIPTION
[0032] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.
[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.
[0034] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.
[0035] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiments even though it can not be explicitly described within the other embodiments. It is expressly understood that combinations of aspects of the
[0036] In the description of the embodiments of the application, the term“and / or” only means an association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character“ / ” herein generally means that the front and rear associated objects are in an“or” relationship.
[0037] In the description of the embodiments of the application, the term“a plurality of” means more than two (including two), and similarly, “a plurality of groups” means more than two groups (including two groups), and “a plurality of pieces” means more than two pieces (including two pieces).
[0038] In the description of the embodiments of the application, the technical terms“center”,“longitudinal”,“transverse”,“length”,“width”,“thickness”,“upper”,“lower”,“front”,“rear”,“left”,“right”,“vertical”,“horizontal”,“top”,“bottom”,“inner”,“outer”,“clockwise”,“counterclockwise”,“axial”,“radial”,“circumferential” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the application.
[0039] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical terms“mounting”,“connection”,“connection”,“fixing” and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.
[0040] With the popularization and promotion of new energy vehicles, the charging and discharging performance, endurance capability and the like of new energy vehicles are increasingly attracting people's attention and attention.
[0041] The battery is composed of a box body and a plurality of battery monomers accommodated in the box body, and the battery monomers are adhered to the bottom of the box body by structural glue. When the battery needs to be maintained or overhauled, the battery monomers need to be taken out from the box body, and the structural glue on the taken-out battery monomers needs to be disassembled. In the prior art, the structural glue is usually made to fall off from the battery monomers by using a mechanical disassembly method after freezing the battery monomers, which is easy to cause damage to the battery due to improper operation and has low operation reliability.
[0042] Based on the above considerations, the present application designs a battery glue layer disassembly method and a glue layer disassembly system. A second glue layer is coated outside a first glue layer to be disassembled, and a disassembly channel is formed after the second glue layer is cured. The first glue layer is made to fall off from the battery monomer by disassembly processing of the disassembly channel, that is, the adhesion of the first glue layer is weakened or damaged to disassemble the first glue layer. The risk of damage to the battery monomer in the disassembly process can be reduced, the glue layer can be disassembled without removing the entire battery monomer, and the convenience and reliability of operation can be improved.
[0043] The embodiments of the present application provide a power consumption device using a battery as a power supply. The power consumption device can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric automobile, a ship, a spacecraft, etc. The electric toy can include a fixed or mobile electric toy, such as a game console, an electric automobile toy, an electric ship toy, an electric aircraft toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, etc.
[0044] The following embodiments take a power consumption device of an embodiment of the present application as a vehicle 10 for example for convenient description.
[0045] Please refer to Figure 1 , Figure 1 The vehicle 10 provided in some embodiments of the present application is a structural schematic diagram. The vehicle 10 can be a fuel automobile, a gas automobile, or a new energy automobile. The new energy automobile can be a pure electric automobile, a hybrid electric automobile, or a range extended automobile, etc. The vehicle 10 is internally provided with a battery 20, which can be arranged at the bottom, the head, or the tail of the vehicle 10. The battery 20 can be used for power supply of the vehicle 10, for example, the battery 20 can be used as an operating power supply of the vehicle 10. The vehicle 10 can further include a controller 11 and a motor 12. The controller 11 is used to control the battery 20 to supply power to the motor 12, for example, to meet the working power demand of the vehicle 10 during starting, navigation, and driving. In another embodiment of the present application, the battery 20 can not only be used as an operating power supply of the vehicle 10, but also be used as a driving power supply of the vehicle 10, to replace or partially replace fuel or natural gas to provide driving force for the vehicle 10.
[0046] Please refer to Figure 2 , Figure 2An exploded view of a battery 20 is provided for some embodiments of the present application. The battery 20 includes a box 21 and a battery cell 22, which is accommodated in the box 21. The box 21 is used to provide an accommodation space for the battery cell 22, and the box 21 can adopt various structures. In some embodiments, the box 21 can include a first part 21a and a second part 21b, which are overlapped with each other, and the first part 21a and the second part 21b together define an accommodation space for accommodating the battery cell 22. The second part 21b can be a hollow structure with one end open, and the first part 21a can be a plate-shaped structure, which is overlapped with the open side of the second part 21b to make the first part 21a and the second part 21b together define the accommodation space; or the first part 21a and the second part 21b can both be hollow structures with one side open, and the open side of the first part 21a is overlapped with the open side of the second part 21b. Of course, the box 21 formed by the first part 21a and the second part 21b can have various shapes, such as a cylinder, a cuboid, etc.
[0047] In the battery 20, the battery cell 22 can be multiple, and the multiple battery cells 22 can be connected in series, in parallel, or in a mixed connection, where the mixed connection means that the multiple battery cells 22 are connected in series and in parallel. The multiple battery cells 22 can be directly connected in series, in parallel, or in a mixed connection, and then the whole of the multiple battery cells 22 is accommodated in the box 21; of course, the battery 20 can also be that the multiple battery cells 22 are first connected in series, in parallel, or in a mixed connection to form a battery module, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, which is accommodated in the box 21.
[0048] Each battery cell 22 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 22 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, and the embodiments of the present application are not limited thereto.
[0049] Please refer to Figures 3 to 6 In an embodiment, the method for disassembling the adhesive layer of the battery cell 22 includes the following steps:
[0050] S100, obtaining the battery cell 22 and exposing the first adhesive layer to be disassembled;
[0051] S200, placing the strip-shaped object 40 on the side 30 of the battery cell 22 having the first adhesive layer;
[0052] S300, applying the second adhesive layer 50 on the side 30 of the battery cell 22 having the first adhesive layer, and completely wrapping the strip-shaped object 40 with the second adhesive layer 50;
[0053] S400, after the second adhesive layer 50 is completely cured, the strip 40 is pulled out and a disassembly channel 51 is formed in the second adhesive layer 50;
[0054] S500 , dismantling the dismantling channel 51 to remove the first adhesive layer from the battery cell 22 .
[0055] It should be noted that the battery cell 22 includes a housing 21 and a battery cell 22. The battery cell 22 is housed within the housing 21, and the bottom of the battery cell 22 is bonded to the housing 21 via a first adhesive layer. If a battery cell 22 malfunctions, it must be removed from the housing 21. This will leave the first adhesive layer on the bottom of the battery cell 22, requiring removal for inspection and maintenance.
[0056] In the embodiment of the present application, the strip 40 is configured as an auxiliary component for forming a disassembly passage 51. The second adhesive layer 50 completely wraps the strip 40, so that the second adhesive layer 50 fills the space between the side 30 of the battery cell 22 with the first adhesive layer and the strip 40. After the second adhesive layer 50 solidifies, the strip 40 is withdrawn to form the disassembly passage 51 in the solidified second adhesive layer 50. The strip 40 can be either hollow or solid.
[0057] In the embodiments of this application, reference is made to Figure 5 When the number of battery cells 22 to be disassembled is at least two, the battery cells 22 can be disassembled along Figure 1 The cells 22 are arranged in different rows in the Y direction, each row having at least two battery cells 22. A disassembly channel 51 is formed at the bottom of each row of battery cells 22 through a single strip 40 to improve disassembly efficiency. Specifically, a single strip 40 is placed at the bottom of each row of battery cells 22, and a second adhesive layer 50 is filled between the side 30 of the battery cell 22 with the first adhesive layer and the strip 40. After the second adhesive layer 50 solidifies, the strip 40 is removed, forming a disassembly channel 51 at the bottom of each battery cell 22.
[0058] In the embodiment of the present application, the first adhesive layer is configured to bond the electrode assembly of the battery cell 22 to the components of the box body 21. Optionally, the first adhesive layer is a structural adhesive.
[0059] In the embodiment of the present application, the second adhesive layer 50 is configured as a component for assisting the first adhesive layer in being detached from the battery cell 22. Optionally, the second adhesive layer 50 is a structural adhesive.
[0060] The glue layer disassembling method of the battery cell 22 described above coats a second glue layer 50 on the first glue layer to be disassembled, forms a disassembling channel 51 after the second glue layer 50 is cured, and disassembles the disassembling channel 51 to make the first glue layer fall off from the battery cell 22, that is, the adhesion of the first glue layer is weakened or damaged to disassemble the first glue layer, which can reduce the risk of damage to the battery cell 22 during disassembly, disassemble the glue layer without removing the entire battery cell 22, and facilitate the convenience and reliability of operation.
[0061] According to some embodiments in the present application, refer to Figure 7 The step S500 of disassembling the disassembling channel 51 to make the first glue layer fall off from the battery cell 22 includes:
[0062] S501, inject the disassembling member into the disassembling channel 51, and make the second glue layer 50 and the first glue layer strain by the volume expansion of the disassembling member to make the first glue layer fall off from the battery cell 22.
[0063] Through the above setting, the adhesion of the first glue layer can be weakened or damaged by the disassembling member to disassemble the first glue layer, which can reduce the risk of damage to the battery cell 22 during disassembly, and facilitate the convenience and reliability of operation.
[0064] According to some embodiments in the present application, refer to Figure 7 The disassembling member is a high polymer solution or an expanding agent.
[0065] It should be noted that the polymer is defined as a macromolecular compound formed by monomers through polymerization reaction; the high polymer solution refers to a fluid containing high molecular compounds with large molecular weight, which exhibits viscous flow and elastic deformation when subjected to external force. The expanding agent is defined as a material that can cause volume expansion through physicochemical reaction.
[0066] In the embodiments of the present application, the high polymer solution is configured to produce volume expansion at room temperature or under heat-induced conditions. For example, the high polymer solution produces volume expansion by foaming, and the continuous volume expansion causes the disassembling channel 51 to strain, causing the second glue layer 50 and the first glue layer to strain, so that the first glue layer falls off from the battery cell 22.
[0067] In the embodiments of the present application, the high polymer solution is injected into the disassembling channel 51 by grouting, or the high polymer solution is injected into the disassembling channel 51 by pouring.
[0068] In some embodiments of the present application, the expanding agent is configured to expand in volume under normal temperature or heat initiation. For example, the expanding agent can expand in volume by dissolving in other liquids, and the continuous volume expansion can cause the disassembling channel 51 to be strained, causing the second adhesive layer 50 and the first adhesive layer to be strained, so that the first adhesive layer is detached from the battery cell 22.
[0069] Through the above arrangement, the adhesion of the first adhesive layer can be weakened or destroyed by the disassembling member to disassemble the first adhesive layer, reducing the risk of damaging the battery cell 22 during disassembly, and facilitating the convenience and reliability of operation.
[0070] According to some embodiments of the present application, referring to Figure 9 , the expanding agent includes any one of sodium polyacrylate, potassium polyacrylate, polyacrylamide, and superabsorbent resin powder.
[0071] Through the above arrangement, the expanding agent can weaken or destroy the first adhesive layer, making the disassembly of the first adhesive layer convenient and reliable.
[0072] According to some embodiments of the present application, referring to Figure 7 , the high polymer solution includes any one of a single-component polyurethane foaming agent, a two-component polyurethane foaming agent, and a two-component silicone foaming agent.
[0073] It should be noted that single-component means that the material already contains a crosslinking agent, and no additional crosslinking agent needs to be added for use; two-component means that an additional crosslinking agent needs to be added to the material before use to form a crosslinked structure.
[0074] In some embodiments of the present application, the main components of the single-component polyurethane foaming agent are polyether type polyurethane prepolymer, catalyst, surfactant, foaming agent, etc.
[0075] In some embodiments of the present application, the two-component polyurethane foaming agent is composed of two components, component A is a hydroxyl component, and component B is a component containing a free isocyanate group; or, component A is a polyurethane prepolymer with an NCO end group, and component B is a low molecular weight polyol or polyamine, and component A and component B are mixed in a certain proportion.
[0076] In some embodiments of the present application, the two-component silicone foaming agent is composed of two components, which usually include silicone polymer, crosslinking agent and other additives.
[0077] Through the above arrangement, the high polymer solution can expand in volume under normal temperature or heat initiation, which is convenient and reliable to operate.
[0078] According to some embodiments of the present application, referring to Figure 8The step S500 of disassembling the disassembling channel 51 to make the first adhesive layer fall off from the battery monomer 22 includes:
[0079] S502, injecting the debonding agent into the disassembling channel 51, and dissolving the second adhesive layer 50 and the first adhesive layer by the debonding agent to make the first adhesive layer fall off from the battery monomer 22.
[0080] It should be noted that the debonding agent is defined as a chemical solvent capable of removing chemical components such as grease and glue, and capable of cleaning grease and glue.
[0081] In the embodiment of the present application, the debonding agent is injected into the disassembling channel 51 by grouting, or the debonding agent solution is injected into the disassembling channel 51 by pouring.
[0082] Through the above setting, the debonding agent can destroy the adhesion of the first adhesive layer to disassemble the first adhesive layer, reduce the risk of damaging the battery monomer 22 during disassembly, and facilitate the convenience and reliability of operation.
[0083] According to some embodiments of the present application, please refer to Figure 8 The debonding agent is any one of phenol, dimethylbenzene, toluene, tetrahydrofuran, m-cresol, N-N-dimethylformamide, N-methylpyrrolidone, dimethyl sulfoxide, ethyl acetate, and butyl acetate.
[0084] Through the above setting, the debonding agent can decompose or remove the adhesive layer, so that the first adhesive layer is disassembled conveniently and reliably.
[0085] According to some embodiments of the present application, please refer to Figure 9 The step S200 of placing the strip-shaped object 40 on the side 30 of the battery monomer 22 having the first adhesive layer further includes:
[0086] S201, covering the auxiliary demolding object on the surface of the strip-shaped object 40.
[0087] It should be noted that the auxiliary demolding object is configured as a member assisting the extraction of the strip-shaped object 40, and the adhesion between the auxiliary demolding object and the strip-shaped object 40 is greater than the adhesion between the second adhesive layer 50 and the strip-shaped object 40, so that the strip-shaped object 40 can be extracted from the solidified second adhesive layer 50.
[0088] In the embodiment of the present application, the auxiliary demolding object can be coated or adhered on the surface of the strip-shaped object 40.
[0089] Through the above setting, the adhesion between the strip-shaped object 40 and the second adhesive layer 50 can be reduced, so that the strip-shaped object 40 can be extracted from the solidified second adhesive layer 50.
[0090] According to some embodiments of the present application, please refer toFigure 9 The auxiliary demolding material includes a demolding agent or a Teflon tape.
[0091] It should be noted that the demolding agent is defined as a functional material between the mold and the finished product, and the demolding agent has chemical resistance and is not dissolved when in contact with different chemical components of the resin (especially styrene and amines).
[0092] Through the above arrangement, the auxiliary demolding material can be conveniently covered on the surface of the strip-shaped object 40, so that the strip-shaped object 40 can be extracted from the second glue layer 50 after curing.
[0093] According to some embodiments of the present application, please refer to Figure 9 and Figure 4 The first glue layer and the second glue layer 50 are adhesive of the same material.
[0094] In the embodiments of the present application, the first glue layer and the second glue layer 50 are structural adhesives of the same material, so that the first glue layer and the second glue layer 50 are firmly bonded.
[0095] Through the above arrangement, the first glue layer and the second glue layer 50 can be firmly bonded, thereby facilitating the first glue layer to fall off from the battery monomer 22.
[0096] According to some embodiments of the present application, please refer to Figure 3 The strip-shaped object 40 includes a metal material.
[0097] In the embodiments of the present application, the strip-shaped object 40 can be stainless steel or aluminum.
[0098] Through the above arrangement, the adhesion between the strip-shaped object 40 and the second glue layer 50 can be reduced, so that the strip-shaped object 40 can be extracted from the second glue layer 50 after curing.
[0099] According to some embodiments of the present application, please refer to Figure 4 and Figure 5 The disassembly channel 51 extends along the first direction, and the first direction is the width direction of the battery monomer 22; in the first direction, the size of the disassembly channel 51 is equal to the size of the battery monomer 22.
[0100] It should be noted that the first direction is the X direction shown in Figure 4 and Figure 5 , that is, the width direction of the battery monomer 22.
[0101] In the embodiments of the present application, the disassembly channel 51 is a hollow structure and extends along the width direction of the battery monomer 22. Alternatively, the disassembly channel 51 is a prism, a cylinder or other irregular shape, and the shape of the disassembly channel 51 is not limited here.
[0102] In the embodiments of the present application, the number of disassembly channels 51 is not limited to one, that is, at least two disassembly channels 51 can be formed in the second adhesive layer 50 after curing.
[0103] Through the above arrangement, in the first direction, the size of the disassembly channel 51 is equal to the size of the battery monomer 22, and under the condition that the second adhesive layer 50 does not collapse after the strip-shaped object 40 is extracted, the volume of the disassembly channel 51 can be as large as possible to facilitate disassembly of the adhesive layer.
[0104] According to some embodiments of the present application, please refer to Figure 4 and Figure 5 , in the second direction, the size of the disassembly channel 51 is at least 1 / 3 of the size of the battery monomer 22, and the second direction is the length direction of the battery monomer 22.
[0105] It should be noted that the second direction is Figure 4 and Figure 5 Y direction shown, that is, the length direction of the battery monomer 22.
[0106] In the embodiments of the present application, in the second direction, the size of the disassembly channel 51 is at least 1 / 3 of the size of the battery monomer 22, that is, the size of the disassembly channel 51 is equal to or greater than 1 / 3 of the size of the battery monomer 22.
[0107] Through the above arrangement, under the condition that the second adhesive layer 50 does not collapse after the strip-shaped object 40 is extracted, the volume of the disassembly channel 51 can be as large as possible to facilitate disassembly of the adhesive layer.
[0108] According to some embodiments of the present application, please refer to Figure 4 and Figure 5 , the disassembly channel 51 is located in the middle area of the side 30 of the battery monomer 22 having the first adhesive layer.
[0109] In the embodiments of the present application, the number of disassembly channels 51 is not limited to one, when the number of disassembly channels 51 is one, the disassembly channel 51 is located in the middle area of the side 30 of the battery monomer 22 having the first adhesive layer; when the number of disassembly channels 51 is at least two, each disassembly channel 51 is located in the middle area of the side 30 of the battery monomer 22 having the first adhesive layer, at this time, each disassembly channel 51 can be distributed in the middle area.
[0110] Through the above arrangement, the probability of the second adhesive layer 50 collapsing after the strip-shaped object 40 is extracted can be reduced, and the adhesive layer can be disassembled conveniently.
[0111] According to some embodiments of the present application, please refer to Figure 4 and Figure 5The number of disassembly channels 51 includes at least two, and each disassembly channel 51 is distributed side by side and spaced apart on the side 30 of the battery monomer 22 having the first adhesive layer.
[0112] In the embodiments of the present application, the shape and size of each disassembly channel 51 can be the same or different; each disassembly channel 51 can be arranged at equal intervals or arranged at non-equal intervals.
[0113] Through the above setting, under the condition that the second adhesive layer 50 collapses after the strip-shaped object 40 is extracted, the adhesive layer can be disassembled at different positions.
[0114] Please refer to Figure 3 In an embodiment, the adhesive layer disassembly system of the battery adopts the above-mentioned adhesive layer disassembly method of the battery.
[0115] It should be noted that the adhesive layer disassembly system of the battery includes components such as a gluing mechanism, a positioning mechanism, and an assembling mechanism. The positioning mechanism is used for positioning the battery, and the gluing mechanism is used for applying the first adhesive layer and the second adhesive layer.
[0116] The above-mentioned adhesive layer disassembly system of the battery can disassemble the adhesive layer without removing the entire battery, which is beneficial to improve the convenience and reliability of operation.
[0117] According to some embodiments of the present application, please refer to Figures 3 to 9 In an embodiment, the disassembly method of the battery monomer 22 includes the following steps: obtaining the battery monomer 22 and exposing the first adhesive layer to be disassembled; covering the auxiliary demolding object on the surface of the strip-shaped object 40; placing the strip-shaped object 40 on the side 30 of the battery monomer 22 having the first adhesive layer; applying the second adhesive layer 50 on the side 30 of the battery monomer 22 having the first adhesive layer, and completely wrapping the strip-shaped object 40 with the second adhesive layer 50; under the condition that the second adhesive layer 50 is completely cured, extracting the strip-shaped object 40 and forming a disassembly channel 51 in the second adhesive layer 50; and disassembling the disassembly channel 51 to make the first adhesive layer fall off from the battery monomer 22.
[0118] The first adhesive layer and the second adhesive layer 50 are adhesive of the same material, and the strip-shaped object 40 includes metal material. The disassembly channel 51 is located in the middle region of the side 30 of the battery monomer 22 having the first adhesive layer. In the first direction, the size of the disassembly channel 51 is equal to the size of the battery monomer 22; in the second direction, the size of the disassembly channel 51 is at least 1 / 3 of the size of the battery monomer 22.
[0119] According to some embodiments of the present application, please refer to Figure 3 In an embodiment, the adhesive layer disassembly system of the battery adopts the above-mentioned adhesive layer disassembly method of the battery.
[0120] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in each embodiment can 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 includes all technical solutions falling within the scope of the claims.
Claims
1. A method of disassembling a battery by a gum layer, characterized by, The method comprises the following steps: exposing a battery cell (22) and a first adhesive layer to be disassembled; placing a strip (40) on a side (30) of the battery cell (22) having the first adhesive layer; applying a second adhesive layer (50) on the side of the battery cell (22) having the first adhesive layer, and completely wrapping the strip (40) with the second adhesive layer (50); after the second adhesive layer (50) is completely cured, extracting the strip (40) and forming a disassembly channel (51) in the second adhesive layer (50); disassembling the disassembly channel (51) to make the first adhesive layer fall off the battery cell (22).
2. The method of claim 1, wherein, The step of disassembling the disassembly channel (51) to make the first adhesive layer fall off the battery cell (22) comprises: injecting a disassembly member into the disassembly channel (51), and making the second adhesive layer (50) and the first adhesive layer strain by volume expansion of the disassembly member, so that the first adhesive layer falls off the battery cell (22).
3. The method of claim 2, wherein the adhesive layer is a hot melt adhesive layer. The disassembly member is a high polymer solution or an expanding agent.
4. The method of claim 3, wherein the adhesive layer is removed by applying heat to the adhesive layer. The expanding agent comprises any one of a sodium polyacrylate, a potassium polyacrylate, a polyacrylamide, and a superabsorbent resin powder.
5. The method of claim 3, wherein the adhesive layer is removed by applying a solvent to the adhesive layer. The high polymer solution comprises any one of a one-component polyurethane foaming agent, a two-component polyurethane foaming agent, and a two-component organic silicon foaming agent.
6. The method of claim 1, wherein, The step of disassembling the disassembly channel (51) to make the first adhesive layer fall off the battery cell (22) comprises: injecting a disassembly member into the disassembly channel (51), and making the second adhesive layer (50) and the first adhesive layer strain by volume expansion of the disassembly member, so that the first adhesive layer falls off the battery cell (22).
7. The method of claim 6, wherein the adhesive layer is removed by applying heat to the battery. The disassembly member is a high polymer solution or an expanding agent.
8. The method of claim 1, wherein, The expanding agent comprises any one of toluene, xylene, phenol, m-cresol, tetrahydrofuran, N-N-dimethylformamide, N-methyl pyrrolidone, dimethyl sulfoxide, ethyl acetate, and butyl acetate. The step of placing the strip (40) on the side (30) of the battery cell (22) having the first adhesive layer further comprises:
9. The method of claim 8, wherein the adhesive layer is removed by applying heat to the battery. covering the surface of the strip (40) with an auxiliary release agent.
10. The method of claim 1, wherein, The auxiliary release agent comprises a release agent or an iron fluoride tape.
11. The method of claim 1, wherein, The first adhesive layer and the second adhesive layer (50) are adhesives of the same material.
12. The method of claim 1, wherein, The material of the strip (40) comprises a metal material.
13. The method of claim 1, wherein, The disassembly channel (51) extends in a first direction, and the first direction is the width direction of the battery cell (22); in the first direction, the size of the disassembly channel (51) is equal to the size of the battery cell (22).
14. The method of claim 1, wherein, In a second direction, the size of the disassembly channel (51) is at least 1 / 3 of the size of the battery cell (22), and the second direction is the length direction of the battery cell (22). The disassembly channel (51) is located in the middle area of the side (30) of the battery cell (22) having the first adhesive layer.
15. The method of claim 1, wherein, The number of the disassembling channels (51) comprises at least two, and each of the disassembling channels (51) is distributed side by side and spaced apart on the side (30) of the battery monomer (22) with the first adhesive layer.
16. A jelly-roll disassembly system for a battery, comprising: Adhesive layer disassembling method for battery as claimed in any one of claims 1-15.