CN110860740A

CN110860740A - Decommissioning device and method for power battery

Info

Publication number: CN110860740A
Application number: CN201911349586.1A
Authority: CN
Inventors: 郑永强; 雷博; 刘湘鹏; 黄润鸿
Original assignee: China South Power Grid International Co ltd; ZHUHAI WATT ELECTRICAL EQUIPMENT CO Ltd
Current assignee: China South Power Grid International Co ltd; ZHUHAI WATT ELECTRICAL EQUIPMENT CO Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-03-06

Abstract

The application discloses decommissioning device and method for power batteries, and the device comprises: a work table; the workbench is provided with two movable workpiece positioning sliding blocks in the X-axis direction and the Y-axis direction, and the workpiece positioning sliding blocks are used for locking and fixing the battery pack or the battery module; the working table is provided with a portal frame capable of sliding in the X-axis direction and used for adjusting the cutting module in the X-axis direction; the gantry is fixed with a first slide rail in the Z-axis direction, a second slide rail and a third slide rail in the Y-axis direction, two limiting slide blocks are arranged on the second slide rail, and a cutting module fixed on the second slide rail and the third slide rail is arranged between the two limiting slide blocks. This application is disassembled to retired power battery through adopting reciprocating vibration formula cutting to replace mechanical rotation formula, has solved among the prior art because mechanical rotation formula instrument has great inertia, and is wayward, careless during the operation, very easily leads to the damage of emery wheel or steel saw piece and flies to take off, has the technical problem of certain potential safety hazard.

Description

Decommissioning device and method for power battery

Technical Field

The application relates to the technical field of decommissioning of power batteries, in particular to a decommissioning device and a decommissioning method for power batteries.

Background

With the rapid development of new energy electric automobile industry in China, the problem of processing the power battery for the electric automobile after retirement is increasingly prominent. It is expected that the cumulative size of retired power cells will exceed 20GWh by 2020. If the retired power battery is improperly treated and is randomly placed or discarded, not only can environmental impact and potential safety hazard be brought to the society, but also serious resource waste can be caused.

The retired power battery cannot be used on the power automobile continuously due to capacity attenuation, but still has high residual capacity and equivalent utilization value. The method is an important link in the recovery and utilization process of the power battery.

Common Bus-bar connections can be divided into two forms, welding and bolting. The bolt fixing mode is easy to install and disassemble, but in long-term running jolt of the electric automobile, the bolt is easy to loosen and causes poor contact and hidden trouble, and meanwhile, the bolt fixing mode is not beneficial to large-scale production, and the bolt fixing mode gradually exits from the application of the main technical route. The current mainstream connecting process is welding, the connecting mode can effectively avoid the problem that a connecting piece is loosened in bumping during long-term operation, but the difficulty of disassembling and recombining the power battery during retirement and reuse is also increased.

Therefore, at present, for the treatment of the Bus-bar of each battery in the retired power battery, two modes of laser and mechanical rotation are generally adopted for cutting and disassembling.

Due to the high cost, complexity and limitation of a laser cutting mode, the disassembly work of each mechanism and unit during the echelon utilization of the retired power battery is seriously restricted. Therefore, in many of the mechanisms and units, semi-automatic or manual mechanical rotary cutting is employed, and cutting and dismantling are performed by using mechanical rotary tools (electric/pneumatic) such as a grinder and an angle grinder. The method has low cost and strong flexibility, but has high requirements on the technical level and practical experience of operators, needs to be adjusted and controlled in real time according to the actual situation on the spot, and is inconvenient to operate. Meanwhile, the mechanical rotary tool has larger rotary inertia, is not easy to control and careless in operation, so that the grinding wheel or the steel saw blade is easily damaged and flies off, and certain potential safety hazards exist.

Disclosure of Invention

The application provides a decommissioning power battery disassembling device and method, and it is inconvenient to operate among the prior art to have solved, because mechanical rotation type instrument has great inertia of rotation, and is wayward, careless during the operation, very easily leads to the damage and the flying off of emery wheel or steel saw piece, has the technical problem of certain potential safety hazard.

This application first aspect provides a power battery disassembly device retires, includes: a work table;

the worktable is provided with two movable workpiece positioning sliding blocks in the X-axis direction and the Y-axis direction, and the workpiece positioning sliding blocks are used for locking and fixing a battery pack or a battery module;

the working table is provided with a portal frame capable of sliding in the X-axis direction and used for adjusting the cutting module in the X-axis direction;

the gantry is fixed with a first slide rail in the Z-axis direction, a second slide rail and a third slide rail in the Y-axis direction, the second slide rail is provided with two limiting slide blocks, and a cutting module fixed on the second slide rail and the third slide rail is arranged between the two limiting slide blocks;

the cutting module is used for cutting the battery pack or the battery module by oscillating in a reciprocating vibration manner.

Optionally, the cutting module comprises a fixing bracket fixed on the second slide rail and the third slide rail.

Optionally, the bottom of the cutting module is provided with a motor, and the motor is connected with a speed regulator.

Optionally, a toothed cutting head is attached to the end of the cutting device.

Optionally, the cutting device is further provided with a transmission shaft, one end of the transmission shaft is connected with an eccentric wheel, the other end of the transmission shaft is connected with a motor, and the motor is used for driving the eccentric wheel to rotate through the transmission shaft.

Optionally, one end of the eccentric wheel connected with the transmission shaft is further connected with a shifting fork, and the shifting fork is used for driving the toothed cutter head to swing in a reciprocating manner.

Optionally, the workbench is provided with a fourth slide rail and a fifth slide rail in the X-axis direction, respectively.

Optionally, the first slide rail, the second slide rail, the third slide rail, the fourth slide rail and the fifth slide rail are provided with a stepping motor and a driving component of the stepping motor.

Optionally, the workbench is respectively provided with a first mechanical arm and a second mechanical arm in the X-axis direction.

A second aspect of the present application provides a decommissioned power battery dismantling method, which is performed by the decommissioned power battery dismantling device according to the first aspect, and the method includes the steps of:

placing a battery pack or a battery module to be disassembled in the center of a workbench, and locking and fixing the battery pack or the battery module through a positioning sliding block;

determining the position of a conductive connecting piece according to the installation condition of the battery core to be disassembled, and adjusting a portal frame in the X-axis direction to adapt to the position of the conductive connecting piece;

adjusting the position of the cutting module on the Z axis according to the thickness of the conductive connecting piece;

adjusting the limiting intervals of the two limiting sliding blocks of the Y axis according to the width of the conductive connecting piece to adapt to the width of the conductive connecting piece;

the cutting module is driven to cut the battery module or the battery pack by reciprocating swing.

According to the technical scheme, the embodiment of the application has the following advantages:

in this application, a decommissioning power battery detaching device is provided, include: a work table;

The application provides a pair of power battery disassembly device retires, can compare laser cutting method through the reciprocal vibrating cutting method of mechanical high frequency, and cost reduction, the device area is little, and is simple to use convenient, and because the tool bit adopts the shift fork to limit the range, makes it use in narrow and small space, possesses good suitability and flexibility, and it adopts the reciprocal vibration mode of high frequency, has avoided rotation type cutting device's operational risk, has good maneuverability, reduces the incident hidden danger. The application has solved among the prior art operation inconvenient, because mechanical rotation type instrument has great inertia, and is wayward, careless during the operation, very easily leads to the damage of grinding wheel or steel saw bit and flies to take off, has the technical problem of certain potential safety hazard.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a decommissioned power battery dismantling device provided in the present application;

fig. 2 is a front view of a cutting module of a decommissioned power battery dismantling device provided by the present application;

fig. 3 is a top view of a cutting module of a decommissioned power battery dismantling device provided by the present application;

fig. 4 is a schematic structural diagram of a battery pack of a decommissioned power battery dismantling device provided in the present application;

fig. 5 is a schematic flow chart of a decommissioning method of a power battery provided in the present application;

reference numerals: a work table 1; a workpiece positioning slider (X direction) 2; a workpiece positioning slider (Y direction) 3; an X-direction slide rail 4; a gantry 5; a Y-direction slide rail 6; a Z-direction slide rail 7; a cutting module 8; a battery module 9; an insulating cloth liner 10; a limiting slide block 11; a motor 13; a speed governor 14; a transmission shaft 15; an eccentric wheel 16; a shift fork 17; a sleeve 18; a bearing 19; a fixed bracket 20; a toothed cutter head 21; an electrical connection 22; a pole 23; and a battery cell 24.

Detailed Description

In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Electric connection between the electric cores: the power battery system is composed of a plurality of battery packs (Pack) or battery modules (Module). Each battery pack or battery module is formed by connecting a plurality of single battery cells (cells) in series or in parallel through a conductive connecting piece (Bus-bar). Generally, the conductive connecting piece (Bus-bar) is mostly made of aluminum, is installed by adopting a welding process, is fixed at the design position of the battery core pole 23, and can play roles of connection, fixation, safety protection and the like.

The application provides a decommissioning power battery disassembling device and method, and solves the technical problems that operation is inconvenient in the prior art, and a grinding wheel or a steel saw blade is extremely easy to damage and fly off due to the fact that a mechanical rotary tool has large rotary inertia and is not easy to control and careless in operation, and certain potential safety hazards exist

Referring to fig. 1-4, fig. 1 is a schematic structural diagram of an embodiment of a decommissioned power battery dismantling device provided by the present application; fig. 2 is a front view of a cutting module of a decommissioned power battery dismantling device provided by the present application; fig. 3 is a top view of a cutting module of a decommissioned power battery dismantling device provided by the present application; fig. 4 is a schematic structural diagram of a battery pack of a decommissioned power battery dismantling device provided in the present application;

the first aspect of the embodiment of the present application provides a decommissioned power battery disassembling device, including: a work table 1;

the workbench 1 is provided with two movable workpiece positioning sliding blocks in the X-axis direction and the Y-axis direction, and the workpiece positioning sliding blocks are used for locking and fixing the battery pack or the battery module 9;

the worktable 1 is provided with a portal frame 5 which can slide in the X-axis direction and is used for adjusting a cutting module 8 in the X-axis direction;

the portal frame 5 is fixed with first slide rail in the Z axle direction, is fixed with second slide rail and third slide rail in the Y axle direction, is equipped with two spacing slider 11 on the second slide rail, is equipped with the cutting module 8 of fixing on second slide rail and third slide rail between two spacing slider 11.

It should be noted that, the decommissioned power battery dismantling device provided by the present application is used for placing a battery Pack (Pack) or a battery Module 9(Module) of a decommissioned power battery; the workbench 1 is provided with two movable workpiece positioning sliding blocks (X direction) 2 in the X direction, and two movable workpiece positioning sliding blocks (Y direction) 3 in the Y direction, which can be used for locking and fixing a battery Pack (Pack) or a battery Module 9 (Module); the working table 1 is provided with one portal frame 5, and the portal frame 5 can slide left and right in the X-axis direction and is used for adjusting the cutting module 8 in the X-axis direction. Three sliding rails are fixed on the portal frame 5, one sliding rail is arranged in the Z-axis direction, two sliding rails are arranged in the Y-axis direction, the three sliding rails can be used for fixing and operating the cutting module 8, the cutting module 8 can slide up and down in the Z-axis direction and be locked and fixed, and can also be in a preset limited range in the Y-axis direction, the preset limited range in the Y-axis direction is a limited area limited by two limiting sliding blocks 11 of the sliding rails in the Y-axis, and the sliding rails slide back and forth in the limited area. The cutting module 8 may be used to perform a cutting operation by oscillating in a reciprocating vibration.

Further, the cutting module 8 comprises a fixing bracket 20, and the fixing bracket 20 is fixed on the second slide rail and the third slide rail.

It should be noted that the cutting module 8 is fixed on the second slide rail and the third slide rail through the fixing bracket 20, and when the cutting operation is performed, the cutting module 8 is fixed on the second slide rail and the third slide rail in a ninety-degree rotation.

Further, the bottom of the cutting module 8 is provided with a motor 13, and the motor 13 is connected with a speed regulator 14.

After the motor 13 is turned on, the rotational speed of the motor 13 can be adjusted by the governor 14.

Further, a toothed cutting head 21 is connected to the end of the cutting module 8.

It should be noted that the cutting module 8 is provided with a toothed cutting head 21 at the end, which is a steel toothed cutting head 21, and can cut the conductive connecting member 22 made of aluminum, and most of the conductive connecting members 22 are made of aluminum.

Further, the cutting module 8 is further provided with a transmission shaft 15, one end of the transmission shaft 15 is connected with an eccentric wheel 16, and the other end of the transmission shaft 15 is connected with a motor 13, wherein the motor 13 is used for driving the eccentric wheel 16 to rotate through the transmission shaft 15.

After the motor 13 is switched on, the rotation speed of the motor 13 is adjusted by the speed adjuster 14, the transmission shaft 15 of the motor 13 rotates to drive the eccentric wheel 16 to rotate, and the eccentric wheel 16 swings left and right.

Furthermore, one end of the eccentric wheel 16 connected with the transmission shaft 15 is also connected with a shifting fork 17, and the shifting fork 17 is used for driving the toothed cutter head 21 to form reciprocating swing.

It should be noted that the eccentric wheel 16 swings left and right to drive the shifting fork 17 to swing, the shifting fork swings left and right to drive the toothed cutter head 21 to reciprocate through the bearing 19 and the shaft sleeve 18, the swing range is determined by the design of the eccentric wheel 16 and is about 2-3mm, so that the cutter head swings in a high-frequency reciprocating manner, and a vibrating cutting effect is generated in a relatively narrow space.

Further, the workbench 1 is provided with a fourth slide rail and a fifth slide rail in the X-axis direction, respectively.

The slide rails are provided on both sides of the table 1 in the X-axis direction.

Further, the first slide rail, the second slide rail, the third slide rail, the fourth slide rail and the fifth slide rail are all provided with a stepping motor 13 and a driving part of the stepping motor 13.

The stepping motor 13 and the driving device may be added to the X-axis slide rail 4, the Y-axis slide rail 6, and the Z-axis slide rail 7.

Further, the worktable 1 is provided with a first mechanical arm and a second mechanical arm in the X-axis direction, respectively.

It should be noted that the slide rails in the X-axis, Y-axis and Z-axis directions can be replaced by a robot arm, and the gantry can also be replaced by a robot arm.

On the basis of the above description of an embodiment of the device, the method of use of the device is as follows:

1. placing a battery pack or a battery module 9 to be disassembled in the center of a workbench 1, and locking and fixing the battery pack or the battery module 9 by adopting two workpiece positioning sliding blocks (X direction) 2 and a workpiece positioning sliding block (Y direction) 3;

2. determining the processing position of the conductive connecting piece 22 to be processed according to the installation condition of the battery cell 24 to be disassembled, adjusting the portal frame 5 in the X-axis direction, and positioning and fixing the position of the portal frame 5 in the X-axis direction to enable the position to be consistent with the section position of the conductive connecting piece 22 to be processed;

3. according to the thickness of the conductive connecting piece 22 to be processed, the position of the cutting unit is adjusted in the Z-axis direction, and the position of the cutting unit in the Z-axis direction is positioned and fixed, so that the cutting unit can cut the conductive connecting piece 22 without touching the battery cell 24 body;

4. according to the width of the conductive connecting piece 22 to be processed, a set limit interval is preset in the Y-axis direction through two limit sliders 11, so that the conductive connecting piece 22 can be completely cut in the limit interval without touching other parts;

5. according to the position, the width and the like of the conductive connecting piece 22 to be processed, the insulating cloth liner 10 is placed, the size and the position of a cutting window corresponding to a processing area are adjusted, the conductive connecting piece 22 to be processed is only exposed, other areas are covered by the insulating cloth liner 10, and potential safety hazards caused by splashing of processing chips are avoided;

6. connecting and starting a power supply of the cutting device, adjusting the direction and the swinging speed of the cutter head according to the thickness of the conductive connecting piece 22, and performing pre-cutting test and formal cutting work;

7. and slowly pushing the cutting device along the Y-axis direction (within a limiting interval), so that the toothed cutter head 21 of the cutting device cuts at the section of the conductive connecting piece 22 to be processed, and the cutting and the disassembling of the electrical connection between the electric cores 24 are completed.

8. If necessary, the operation can be carried out for a plurality of times to flatten the processing cut of the conductive connecting piece 22 to be processed, and after the cutting, the insulating padding cloth 10 and the processing residues and scraps are cleaned;

9. and adjusting the position of the portal frame 5, and taking down the battery pack or the battery module 9 to finish the disassembly work.

For easy understanding, please refer to fig. 5, which is a schematic flow chart of a decommissioning method of a retired power battery provided by the present application.

A second aspect of the present application provides a decommissioned power battery dismantling method, which is performed by the decommissioned power battery dismantling device of the foregoing embodiment, and includes the steps of:

100, placing a battery pack or a battery module 9 to be disassembled in the center of the workbench 1, and locking and fixing the battery pack or the battery module 9 through a positioning slide block;

200, determining the position of the conductive connecting piece 22 according to the installation condition of the battery cell 24 to be disassembled, and adjusting the gantry 5 in the X-axis direction to adapt to the position of the conductive connecting piece 22;

300, adjusting the position of the cutting module 8 in the Z axis according to the thickness of the conductive connecting piece 22;

400, adjusting the limiting intervals of the two limiting sliding blocks 11 of the Y axis according to the width of the conductive connecting piece 22 to adapt to the width of the conductive connecting piece 22;

and 500, driving the cutting module 8 to cut the battery module 9 or the battery pack by reciprocating swing.

It should be noted that, based on the above description of the embodiment of the apparatus, the method of using the apparatus is as follows:

2. determining the processing position of the conductive connecting piece 12 to be processed according to the installation condition of the battery cell 24 to be disassembled, adjusting the portal frame 5 in the X-axis direction, and positioning and fixing the position of the portal frame 5 in the X-axis direction to enable the position to be consistent with the section position of the conductive connecting piece 22 to be processed;

7. and slowly pushing the cutting device along the Y-axis direction (within a limiting interval), so that the toothed cutter head 22 of the cutting device cuts the section of the conductive connecting piece 12 to be processed, and the cutting and the disassembling of the electrical connection between the electric cores 24 are completed.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. The utility model provides a decommissioning power battery detaching device which characterized in that includes: a work table;

2. The decommissioned power battery dismantling device according to claim 1, wherein the cutting module comprises a fixing bracket fixed on the second slide rail and the third slide rail.

3. The decommissioned power battery dismantling device according to claim 1, wherein a motor is provided at the bottom of the cutting module, and a speed regulator is connected to the motor.

4. The decommissioned power battery dismantling device according to claim 1, wherein a toothed cutter head is connected to the end of the cutting device.

5. The decommissioned power battery disassembling device according to claim 1, wherein the cutting device is further provided with a transmission shaft, one end of the transmission shaft is connected with an eccentric wheel, and the other end of the transmission shaft is connected with a motor, and the motor is used for driving the eccentric wheel to rotate through the transmission shaft.

6. The decommissioning device for power batteries according to claim 5, wherein one end of the eccentric wheel, which is connected with the transmission shaft, is further connected with a shifting fork, and the shifting fork is used for driving the toothed cutter head to swing in a reciprocating manner.

7. The decommissioned power battery dismantling device according to claim 1, wherein the workbench is provided with a fourth slide rail and a fifth slide rail in the X-axis direction, respectively.

8. The decommissioned power battery dismantling device according to claim 7, wherein the first slide rail, the second slide rail, the third slide rail, the fourth slide rail and the fifth slide rail are provided with a stepping motor and a driving part of the stepping motor.

9. The decommissioned power battery dismantling device according to claim 1, wherein the workbench is provided with a first mechanical arm and a second mechanical arm in the X-axis direction, respectively.

10. A decommissioning method of retired power batteries, which is implemented by the decommissioning apparatus of retired power batteries according to any one of claims 1-9, and which comprises the steps of: