Battery pack disassembling method and equipment

Abstract

The invention relates to an electric detection cell technology, in particular to a battery pack disassembling device and method. Wherein the battery pack disassembling equipment comprises a solvent device, and the solvent device stores a solvent, is connected with the heat management component and is used for inputting the solvent into the heat management component so as to heat and / or cool the adhesive. The solvent is input into the heat management component of the battery pack to heat and / or cool the adhesive, so that the adhesive is softened, the battery in the battery pack is flexibly disassembled, and compared with traditional disassembling equipment, the battery disassembling equipment is higher in efficiency, simpler in structure and more environmentally friendly.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery pack disassembly, and more specifically, to a battery pack disassembly method and device. Background Art

[0002] The battery pack has a large energy capacity and output power, and can be configured in electric bicycles, electric vehicles and electric equipment. With the vigorous development of new energy electric vehicles, the power battery market is showing a rapid growth trend. After the battery pack reaches the end of its service life, it enters the retirement stage. The retired battery pack is disassembled and its internal parts are classified, and then recycled.

[0003] In the existing battery pack design, the batteries in the battery pack are usually connected and fixed to the box and between the batteries by coating adhesive. When the batteries in the battery pack need to be repaired or recycled, the adhesive layer is difficult to remove directly. Mechanical cutting to disassemble the adhesive layer can easily cause damage to the battery. In addition, the mechanical cutting method has a complex equipment structure and low disassembly efficiency. Chemical disassembly can easily cause environmental problems. Summary of the invention

[0004] In view of the above problems, the embodiments of the present application provide a battery pack disassembly method and equipment, which can flexibly disassemble the batteries in the battery pack by utilizing the property of the adhesive to soften and debond after heating and cooling. Compared with traditional disassembly equipment, it is more efficient, has a simpler structure, and is more environmentally friendly.

[0005] A first aspect of an embodiment of the present application provides a battery pack disassembly device, wherein the battery pack includes single cells and a thermal management component, wherein the single cells are connected and fixed in the battery pack by coating an adhesive, and wherein the device comprises: a solvent device, wherein the solvent device stores a solvent, is connected to the thermal management component, and is used to input a solvent into the thermal management component to heat and / or cool the adhesive.

[0006] In one feasible embodiment, a high-temperature solvent device is provided, which is connected to the thermal management component and is used to input a high-temperature solvent into the thermal management component; a low-temperature solvent device is provided, which is connected to the thermal management component and is used to input a low-temperature solvent into the thermal management component.

[0007] In a feasible implementation, the battery pack disassembly equipment further includes a solvent driving device, and the solvent driving device is used to drive the high-temperature solvent or the low-temperature solvent to circulate.

[0008] In a feasible implementation, the thermal management component includes an input port and an output port, the input port is used to input the high-temperature solvent or the low-temperature solvent, and the output port is used to output the high-temperature solvent or the low-temperature solvent.

[0009] In one feasible embodiment, the high temperature solvent device includes: a high temperature solvent storage device connected to the input port; and a high temperature solvent recovery device connected to the output port and the high temperature solvent storage device.

[0010] In a feasible implementation, an on-off valve is installed between the high-temperature solvent recovery device and the high-temperature solvent storage device to control the on-off between the high-temperature solvent recovery device and the high-temperature solvent storage device.

[0011] In one feasible embodiment, the low-temperature solvent device includes: a low-temperature solvent storage device connected to the input port; and a low-temperature solvent recovery device connected to the output port and the low-temperature solvent storage device.

[0012] In a feasible implementation, a second on-off valve is installed between the low-temperature solvent recovery device and the low-temperature solvent storage device to control the on-off between the low-temperature solvent recovery device and the low-temperature solvent storage device.

[0013] In a feasible implementation, the low-temperature solvent storage device, the high-temperature solvent storage device and the input port are connected via a three-way valve 1, and the low-temperature solvent recovery device, the high-temperature solvent recovery device and the output port are connected via a three-way valve 2.

[0014] In a feasible implementation, the battery pack disassembly equipment further includes a temperature sensor.

[0015] In a feasible implementation manner, the battery pack disassembly equipment further includes a vibration device, and the vibration device is used to vibrate the battery pack.

[0016] In a feasible implementation, the battery pack disassembly equipment further includes a rotating device, and the rotating device is used to rotate the battery pack.

[0017] In a feasible implementation, the rotating device includes: an impact cylinder, and the impact cylinder is used to provide a vibration force to the battery pack.

[0018] A second aspect of an embodiment of the present application provides a battery pack disassembly method, which is applied to the battery pack disassembly device described above. The battery pack disassembly method comprises the following steps:

[0019] Step 1: injecting a high-temperature solvent into the thermal management component of the battery pack to be disassembled;

[0020] Step 2, outputting a high-temperature solvent to the thermal management system of the battery pack to be disassembled, and then inputting a low-temperature solvent;

[0021] Step 3: After the adhesive is softened, the single battery is disassembled from the battery pack.

[0022] The embodiments of the present application provide a battery pack disassembly method and equipment, including a high-temperature solvent device, a low-temperature solvent device, a vibration device and a rotation device. By first inputting a high-temperature solvent and then a low-temperature solvent into the thermal management system in the battery pack, the adhesive is softened and debonded after heating and cooling, thereby realizing flexible disassembly of the batteries in the battery pack. Compared with traditional disassembly equipment, it is more efficient, has a simpler structure and is more environmentally friendly.

[0023] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the battery pack disassembly method and equipment provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the embodiments of the specification.

[0025] Figure 1 This is a schematic diagram of the battery pack disassembly equipment.

[0026] 1. Solvent driving device; 2. Input port; 3. Output port; 4. High-temperature solvent storage device; 5. High-temperature solvent recovery device; 6. On-off valve 1; 7. Low-temperature solvent storage device; 8. Low-temperature solvent recovery device; 9. On-off valve 2; 10. Three-way valve 1; 11. Three-way valve 2; 12. Vibration device; 13. Battery pack. DETAILED DESCRIPTION

[0027] In the related art, battery pack disassembly equipment generally adopts mechanical cutting to disassemble the battery pack, or adopts chemical method to disassemble the battery pack. However, the related equipment of mechanical cutting has a complex structure, which not only has low disassembly efficiency but also high disassembly cost. The chemical substances of the battery disassembled by chemical method are easy to cause harm to the human body and pollute the environment, which does not meet the environmental protection requirements.

[0028] In response to the above technical problems, the embodiments of the present application provide a battery pack disassembly method and equipment, including a high-temperature solvent device, a low-temperature solvent device, a vibration device and a rotation device. By first inputting a high-temperature solvent and then a low-temperature solvent into the thermal management system in the battery pack, the adhesive is softened and debonded after heating and cooling, thereby achieving flexible disassembly of the batteries in the battery pack. Compared with traditional disassembly equipment, it is more efficient, has a simpler structure, and is more environmentally friendly.

[0029] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments.

[0030] The following specific embodiments are used to describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings:

[0031] It should be noted that the battery pack disassembly method and device provided in the embodiments of the present application can be applied to disassembling various different battery packs.

[0032] Figure 1 A schematic diagram of disassembling the battery pack provided by the present invention is shown, referring to Figure 1 The battery pack disassembly equipment of the present invention includes: a high-temperature solvent device, which is connected to the thermal management component and is used to input a high-temperature solvent into the thermal management component; and a low-temperature solvent device, which is connected to the thermal management component and is used to input a low-temperature solvent into the thermal management component.

[0033] In one embodiment, the high-temperature solvent can generally be selected from liquid media such as tap water or purified water at 45°C-100°C, and the low-temperature solvent can be selected from liquid media such as tap water or purified water at 5°C-20°C. The thermal management component is a liquid cooling plate. The high-temperature solvent or the low-temperature solvent is input into the thermal management component of the battery pack 13, that is, high-temperature tap water or purified water is introduced into the liquid cooling plate of the battery pack 13, or low-temperature tap water or purified water is introduced into the liquid cooling plate of the battery pack 13, so as to conduct temperature to the adhesive in the battery pack 13 that is in direct or indirect contact with the liquid cooling plate, so that the adhesive in the battery pack 13 is first heated up and then cooled down, thereby causing the adhesive to soften and debond, making it easier for the battery modules or single cells in the battery pack 13 to peel off the shell of the battery pack 13, thereby achieving the purpose of disassembling the battery pack 13.

[0034] In one embodiment, the battery pack disassembly equipment also includes a solvent driving device 1, which is used to provide circulation power to drive the high-temperature solvent or the low-temperature solvent to complete the heating work of the high-temperature solvent on the thermal management component and the cooling work of the low-temperature solvent on the thermal management component.

[0035] In one embodiment, the thermal management component includes an input port 2 and an output port 3, wherein the input port 2 is used to input a high-temperature solvent or a low-temperature solvent, and the output port 3 is used to output a high-temperature solvent or a low-temperature solvent. The high-temperature solvent first flows into the thermal management component from the input port 2 of the thermal management component, and circulates in the flow channel of the thermal management component for a period of time to transfer heat to the adhesive in the battery pack 13. At the same time, during this process, the output port 3 of the thermal management component provides a discharge port for the high-temperature solvent flowing through the thermal management component. After the high-temperature solvent is discharged, the low-temperature solvent can flow into the thermal management component through the input port 2 of the thermal management component, and circulate in the flow channel of the thermal management component for a period of time to absorb the heat of the adhesive in the battery pack 13 and cool it down. At the same time, during this process, the output port 3 of the thermal management component provides a discharge port for the high-temperature solvent flowing through the thermal management component.

[0036] In one embodiment, the high temperature solvent device comprises: a high temperature solvent storage device 4, which is connected to the input port 2; and a high temperature solvent recovery device 5, which is connected to the output port 3 and the high temperature solvent storage device 4. It is easy to see that the high temperature solvent device is connected to the input port 2 through the high temperature solvent storage device 4, and the high temperature solvent recovery device 5 is connected to the output port 3 and the high temperature solvent storage device 4, so that the high temperature solvent can form a loop in the high temperature solvent device and the thermal management component.

[0037] In one embodiment, an on-off valve 6 is installed between the high-temperature solvent recovery device 5 and the high-temperature solvent storage device 4 to control the on-off between the high-temperature solvent recovery device 5 and the high-temperature solvent storage device 4.

[0038] In one embodiment, the cryogenic solvent device comprises: a cryogenic solvent storage device 7, the cryogenic solvent storage device 7 is connected to the input port 2; and a cryogenic solvent recovery device 8, the cryogenic solvent recovery device 8 is connected to the output port 3 and the cryogenic solvent storage device 7. It is easy to see that the cryogenic solvent device is connected to the input port 2 through the cryogenic solvent storage device 7, and the cryogenic solvent recovery device 8 is connected to the output port 3 and the cryogenic solvent storage device 7, so that the cryogenic solvent can form a loop in the cryogenic solvent device and the thermal management component.

[0039] In one embodiment, an on-off valve 9 is installed between the low-temperature solvent recovery device 8 and the low-temperature solvent storage device 7 to control the on-off between the low-temperature solvent recovery device 8 and the low-temperature solvent storage device 7 .

[0040] In one embodiment, the battery pack disassembly equipment also includes a solvent driving device 1, which connects the high-temperature solvent device and the low-temperature solvent device and is used to drive the high-temperature solvent or the low-temperature solvent to circulate. One or more solvent driving devices 1 can be selected and applied to the loop formed by the high-temperature solvent device and the thermal management component and the loop formed by the low-temperature solvent device and the thermal management component. The solvent driving device 1 can be selected but is not limited to a pressure pump.

[0041] In one embodiment, the low-temperature solvent storage device 7, the high-temperature solvent storage device 4 and the input port 2 are connected through a three-way valve 10, and the low-temperature solvent recovery device 8, the high-temperature solvent recovery device 5 and the output port 3 are connected through a three-way valve 11. When only high-temperature heating of the adhesive is required, the connection part between the three-way valve 10 and the high-temperature solvent storage device 4 and the input port 2 is in a passage state, and the connection part between the three-way valve 10 and the low-temperature solvent storage device 7 is in a disconnection state. The three-way valve 11 and the high-temperature solvent recovery device 5 and the output port 3 are in a passage state, and the three-way valve 10 and the low-temperature solvent recovery device 8 are in a disconnection state. At this time, the high-temperature solvent flows out from the high-temperature solvent storage device 4 through the three-way valve 10 and the input port 2 into the thermal management component to heat the adhesive. After the heating work is completed, the high-temperature solvent flows out of the thermal management component through the output port 3 and then flows into the high-temperature solvent recovery device 5 through the three-way valve 11. When only the adhesive needs to be cooled down, the connection part between the three-way valve 10 and the low-temperature solvent storage device 7 and the input port 2 is in a passage state, the connection part between the three-way valve 10 and the high-temperature solvent storage device 4 is in a disconnection state, the three-way valve 2 11 and the low-temperature solvent recovery device 8 and the output port 3 are in a passage state, and the three-way valve 10 and the high-temperature solvent recovery device 5 are in a disconnection state. At this time, the low-temperature solvent flows out from the low-temperature solvent storage device 7 through the three-way valve 10 and the input port 2 into the thermal management component to cool the adhesive. After the cooling work is completed, the low-temperature solvent flows out of the thermal management component through the output port 3, and then flows into the low-temperature solvent recovery device 8 through the three-way valve 2 11.

[0042] In one embodiment, the battery pack disassembly equipment further includes a temperature sensor for monitoring the temperature of the high-temperature solvent and the low-temperature solvent to ensure that the temperature of the high-temperature solvent and the low-temperature solvent flowing into the thermal management component meets the requirements.

[0043] In one embodiment, the battery pack disassembly equipment also includes a vibration device 12, which is used to vibrate the battery pack 13. The vibration helps the battery module or single cell to fall off from the battery pack 13 shell after the thermal management component is heated up at high temperature and cooled down at low temperature to soften the adhesive.

[0044] In one embodiment, the battery pack disassembly equipment also includes a rotating device, which is used to rotate the battery pack 13. After the thermal management component is heated up at high temperature and cooled down at low temperature to soften the adhesive, the battery pack 13 is rotated to a certain angle so that the heavier side of the battery pack 13, such as the battery module or the single cell, is facing downward relative to the center of gravity of the adhesive, and gravity is used to help the battery module or the single cell fall off the battery pack 13 shell.

[0045] Furthermore, the vibration device 12 includes: an impact cylinder, which is used to provide a vibration force to the battery pack 13 .

[0046] The present application also provides a battery pack disassembly method, which is applied to the battery pack disassembly device in the above embodiment. The disassembly method includes:

[0047] Step 1: inject a high-temperature solvent into the thermal management component of the battery pack to be disassembled to heat the thermal management component and then heat the adhesive;

[0048] Step 2: Output high-temperature solvent to the thermal management system of the battery pack to be disassembled, and then input low-temperature solvent to cool down the thermal management component, thereby cooling down the thermal adhesive;

[0049] Step 3: After the adhesive is softened, the single battery is disassembled from the battery pack. After the adhesive is heated and cooled, the adhesive softens and the bonding effect is reduced. At this time, the battery can be disassembled.

[0050] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "disassembly", "input", "output", "connection" and "connected" should be understood in a broad sense. For example, it can be a fixed connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0051] In the embodiments of the present application, the devices or elements referred to or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0052] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0053] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0054] The term "plurality" in this article refers to two or more than two. The term "and / or" in this article is just a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0055] It should be understood that the various numerical numbers involved in the embodiments of the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0056] It can be understood that in the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0057] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0058] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A battery pack disassembly device, wherein the battery pack comprises a single cell and a thermal management component, wherein the single cell is connected and fixed in the battery pack by coating an adhesive, characterized in that: include: A solvent device stores a solvent, is connected to the thermal management component, and is used to input the solvent into the thermal management component to heat and / or cool the adhesive.

2. The battery pack disassembly equipment according to claim 1, characterized in that: The solvent device comprises: a high-temperature solvent device, the high-temperature solvent device being connected to the thermal management component and being used to input a high-temperature solvent into the thermal management component; A low-temperature solvent device is connected to the thermal management component and is used to input a low-temperature solvent into the thermal management component.

3. The battery pack disassembly equipment according to claim 2, characterized in that: The battery pack disassembly equipment further includes a solvent driving device, which is used to drive the high-temperature solvent or the low-temperature solvent to circulate.

4. The battery pack disassembly equipment according to claim 2, characterized in that: The heat management component includes an input port and an output port, the input port is used to input the high-temperature solvent or the low-temperature solvent, and the output port is used to output the high-temperature solvent or the low-temperature solvent.

5. The battery pack disassembly equipment according to claim 4, characterized in that: The high temperature solvent device comprises: a high temperature solvent storage device, the high temperature solvent storage device being connected to the input port; A high temperature solvent recovery device is connected to the output port and the high temperature solvent storage device.

6. The battery pack disassembly equipment according to claim 5, characterized in that: An on-off valve is installed between the high-temperature solvent recovery device and the high-temperature solvent storage device to control the on-off between the high-temperature solvent recovery device and the high-temperature solvent storage device.

7. The battery pack disassembly equipment according to claim 4, characterized in that: The low temperature solvent device comprises: a low-temperature solvent storage device, the low-temperature solvent storage device being connected to the input port; A low-temperature solvent recovery device is connected to the output port and the low-temperature solvent storage device.

8. The battery pack disassembly equipment according to claim 7, characterized in that: A second on-off valve is installed between the low-temperature solvent recovery device and the low-temperature solvent storage device, which is used to control the on-off between the low-temperature solvent recovery device and the low-temperature solvent storage device.

9. The battery pack disassembly equipment according to claim 6 and claim 8, characterized in that: The low-temperature solvent storage device, the high-temperature solvent storage device and the input port are connected via a three-way valve 1, and the low-temperature solvent recovery device, the high-temperature solvent recovery device and the output port are connected via a three-way valve 2.

10. The battery pack disassembly equipment according to claim 9, characterized in that: The battery pack disassembly equipment also includes a temperature sensor.

11. The battery pack disassembly equipment according to claim 10, characterized in that: The battery pack disassembly equipment further includes a vibration device, and the vibration device is used to vibrate the battery pack.

12. The battery pack disassembly equipment according to claim 10, characterized in that: The battery pack disassembly equipment further includes a rotating device, and the rotating device is used to rotate the battery pack.

13. The battery pack disassembly equipment according to claim 11, characterized in that: The vibration device includes: an impact cylinder, and the impact cylinder is used to provide a vibration force to the battery pack.

14. A battery pack disassembly method, characterized in that: Applied to the battery pack disassembly device according to any one of claims 1 to 13, the battery pack disassembly method comprises the following steps: Step 1: injecting the high-temperature solvent into the thermal management component of the battery pack to be disassembled; Step 2, outputting the high-temperature solvent to the thermal management system of the battery pack to be disassembled, and then inputting the low-temperature solvent; Step 3: After the adhesive is softened, the single battery is disassembled from the battery pack.

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