A waste lithium battery life detection system and detection method for recycling

Abstract

The present invention discloses a life detection system and method for recycling waste lithium batteries, wherein a movable frame is connected to a base via a traction structure; the frame is provided with two contacts for lifting up and down in opposite directions, the two contacts are connected via a lifting structure, and an ammeter is also provided between the two contacts; the traction structure comprises a winding assembly and an intermittent rotation assembly; the intermittent rotation assembly comprises a motor mounted on the base and a Maltese cross movement assembly mounted on the base; when the traction structure is in motion, the movable frame is driven to move horizontally along a guide member under the action of a sleeve, thereby driving a plurality of waste lithium batteries inserted in insertion tubes on the movable frame to move horizontally, and during the horizontal movement of the lithium batteries, the two contacts are driven to move back and forth up and down by the lifting structure, and the two contacts move towards each other to electrically contact the positive and negative poles of the waste lithium batteries respectively, and the life of the waste lithium batteries is detected by the ammeter.

Description

Technical Field

[0001] The present invention relates to a battery recycling detection device, in particular to a waste lithium battery life detection system and detection method for recycling. Background Art

[0002] The disposal of waste lithium batteries has always been a difficult problem. At present, with the improvement of people's environmental awareness and recycling awareness, most waste lithium batteries can be effectively recycled and reused.

[0003] Because lithium-ion batteries have a limited lifespan, a large amount of waste is generated. For example, the positive electrode of a ternary material battery contains a large amount of precious metals, including 5-20% cobalt, 5-12% nickel, 7-10% manganese, 2-5% lithium, and 7% plastic. Most of these metals are rare and should be recycled and reused appropriately. For example, cobalt, as a strategic resource, is widely used in various fields, including lithium batteries and high-temperature alloys. Therefore, it can be estimated that the amount of precious metals that can be recycled is enormous.

[0004] However, lithium batteries require careful selection during recycling. Retired power lithium batteries are best recycled through a second-life approach, where materials are recycled after a second life cycle. The pursuit of economic benefits is the driving force behind both business and social behavior. Second-life recycling, where the battery's usable value is reduced below maintenance costs before raw material recovery, maximizes its value.

[0005] Therefore, it is necessary to test the life of used lithium batteries during recycling. If they still have value, they should continue to be used. Only after their power is used up can they be recycled to maximize profits and make the best use of them. However, since there is currently no dedicated batch testing system, large-scale testing in the industry is very difficult. Summary of the Invention

[0006] Based on the deficiencies in the prior art mentioned in the above background technology, the present invention provides a waste lithium battery life detection system and detection method for recycling.

[0007] The present invention overcomes the above technical problems by adopting the following technical solutions, specifically:

[0008] A waste lithium battery life detection system for recycling and utilizing comprises a base and a mobile rack horizontally arranged on the base for storing waste lithium batteries; the mobile rack is connected to the base via a traction structure;

[0009] A bracket is vertically fixed to the rear of the base, and the bracket is provided with two contacts that are lifted up and down in opposite directions. The two contacts are connected by a lifting structure. An ammeter for life detection of waste lithium batteries is also provided between the two contacts. The positive pole of the ammeter is electrically connected to one of the contacts through a wire, and the negative pole of the ammeter is electrically connected to the other contact through another wire.

[0010] A guide piece is fixed horizontally on the base, and a fitting piece that is horizontally slidably fitted with the guide piece is fixed on the side wall of the movable frame; and a plurality of rubber-made inserts are uniformly arranged through the movable frame.

[0011] As a further solution of the present invention: the traction structure includes a winding assembly and an intermittent rotation assembly; the intermittent rotation assembly includes a motor mounted on the base and a Maltese cross movement assembly mounted on the base;

[0012] The Maltese cross movement assembly includes a driving wheel rotatably mounted on the base and a driven wheel rotatably mounted on the base and cooperating with the driving wheel; the driving wheel is connected to the output end of the motor through a transmission member, and the driven wheel is connected to the winding assembly.

[0013] As a further solution of the present invention: the winding assembly includes a winding disc coaxially fixed to the driven wheel, two pulleys rotatably mounted on the base away from the motor, and a traction wire passing around the pulleys to connect the movable frame and the winding disc;

[0014] One end of the traction wire is fixed on the winding drum, and the other end is fixed on a side of the movable frame close to the motor.

[0015] As a further solution of the present invention, the two contacts are respectively mounted on the bracket via two sets of elastic structures; the elastic structures include a sleeve vertically fixed to the bracket, a sleeve rod slidably engaged with the sleeve, and an elastic member for elastically connecting the sleeve rod and the sleeve;

[0016] A horizontal lifting member is fixed to one end of the sleeve rod extending out of the sleeve, the contacts are fixed on the lifting member, and the two contacts are arranged on the same plumb line.

[0017] As a further solution of the present invention: the two lifting members are both connected to the winding structure, a driving mechanism is provided between the bracket and the movable frame, and the driving mechanism is connected to the winding structure via a transmission structure;

[0018] The driving mechanism includes a gear mounted horizontally on one side of the bracket and a plurality of spur racks fixed horizontally and equidistantly on the side wall of the mobile rack; there is a gap between two adjacent spur racks, and the gear is adapted to the teeth on the spur racks.

[0019] As a further solution of the present invention: the winding structure includes a winding shaft horizontally rotatably arranged on the bracket, two winding rollers fixed on the winding shaft, and a pull rope for connecting the two winding rollers and the two lifting members;

[0020] One end of the pull rope is fixedly wound on the winding roller, and the other end is fixed on the lifting member; the winding directions of the pull ropes wound on the two winding rollers are opposite.

[0021] As a further solution of the present invention: the transmission structure includes a rotating shaft vertically rotatably arranged on one side of the bracket and fixed to the gear, a first bevel gear fixed on the rotating shaft, and a second bevel gear fixed at the end of the shaft and meshing with the first bevel gear.

[0022] A method for detecting the life of a lithium battery using the waste lithium battery life detection system in the above embodiment comprises the following steps:

[0023] Step 1: Initial position adjustment: start the motor in reverse to completely release the traction wire from the winding drum and pull the movable frame to move it to the initial end of its stroke;

[0024] Step 2: Load the used lithium batteries. Place the used lithium batteries to be tested into the cannula, keeping the positive and negative poles of the used lithium batteries in the same direction and at the same height.

[0025] Step 3: Start the test. Use wires to connect the two contacts to the positive and negative poles of the ammeter respectively, start the motor in the forward direction, check the used lithium batteries on the mobile rack one by one, and judge the battery life according to the index on the ammeter;

[0026] Step 4: Unloading: After the waste lithium battery at the end passes the detection of two contacts and ammeter, turn off the motor and take out the waste lithium battery in the insertion tube on the mobile rack.

[0027] After adopting the above structure, the present invention has the following advantages compared with the existing technology: when the traction structure is in action, it drives the movable frame to move horizontally along the guide member under the action of the sleeve, thereby driving the horizontal movement of multiple waste lithium batteries inserted in the insertion tube on the movable frame. During the horizontal movement of the lithium battery, the lifting structure drives the two contacts to move back and forth up and down, and the two contacts move toward each other to electrically contact the positive and negative poles of the waste lithium battery respectively. The life of the waste lithium battery is detected by the ammeter. After the detection is completed, the two contacts are separated, and the traction structure drives the next battery forward. The two contacts then perform life detection on the next waste lithium battery, thereby realizing the function of continuous detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural diagram of a waste lithium battery life detection system for recycling.

[0029] Figure 2 This is a partial enlarged view of the driving mechanism, transmission structure and winding structure in the waste lithium battery life detection system for recycling.

[0030] Figure 3 A partial cross-sectional view of the elastic structure in a waste lithium battery life detection system for recycling.

[0031] Figure 4 This is a structural diagram of the mobile frame, sleeve components and insertion tube in the waste lithium battery life detection system for recycling.

[0032] In the figure: 1-base; 2-guide member; 3-movable frame; 4-fitting member; 5-cannula; 6-motor; 7-transmission member; 8-driving wheel; 9-driven wheel; 10-winding disk; 11-traction wire; 12-pulley; 13-bracket; 14-gear; 15-spur rack; 16-rotating shaft; 17-first bevel gear; 18-second bevel gear; 19-winding shaft; 20-winding roller; 21-lifting member; 22-contact; 23-sleeve rod; 24-sleeve; 25-elastic member; 26-ammeter; 27-pull rope. DETAILED DESCRIPTION

[0033] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in a variety of different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0034] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0035] See also Figures 1 to 4In an embodiment of the present invention, a waste lithium battery life detection system for recycling and utilizing comprises a base 1 and a mobile rack 3 horizontally movably arranged on the base 1 for storing waste lithium batteries; the mobile rack 3 is connected to the base 1 by a traction structure; specifically, a bracket 13 is vertically fixed to the rear part of the base 1, and the bracket 13 is provided with two contacts 22 for lifting up and down, and the two contacts 22 are connected by a lifting structure, and an ammeter 26 for detecting the life of the waste lithium battery is also provided between the two contacts 22, the positive pole of the ammeter 26 is electrically connected to one of the contacts 22 through a wire, and the negative pole of the ammeter 26 is electrically connected to the other contact 22 through another wire; in detail, a guide member 2 is horizontally fixed on the base 1, and a fitting member 4 is fixed on the side wall of the mobile rack 3, which is horizontally slidably fitted with the guide member 2; a plurality of rubber material inserts 5 are equidistantly provided on the mobile rack 3.

[0036] When the traction structure is in action, the movable rack 3 is driven to move horizontally along the guide member 2 under the action of the sleeve member 4, thereby driving the multiple waste lithium batteries inserted in the insertion tube 5 on the movable rack 3 to move horizontally. During the horizontal movement of the lithium batteries, the two contacts 22 are driven to move up and down reciprocatingly by the lifting structure. The two contacts 22 move toward each other and electrically contact the positive and negative poles of the waste lithium batteries respectively. The life of the waste lithium batteries is tested by the ammeter 26. After the test is completed, the two contacts 22 are separated, and the traction structure drives the next battery forward. The two contacts 22 then perform life detection on the next waste lithium battery, thereby realizing the function of continuous detection.

[0037] In one embodiment of the present invention, the traction structure includes a winding assembly and an intermittent rotation assembly; the intermittent rotation assembly includes a motor 6 mounted on the base 1 and a Maltese cross movement assembly mounted on the base 1;

[0038] The Maltese cross movement assembly includes a driving wheel 8 rotatably mounted on the base 1 and a driven wheel 9 rotatably mounted on the base 1 and cooperating with the driving wheel 8; the driving wheel 8 is connected to the output end of the motor 6 via a transmission member 7, and the driven wheel 9 is connected to the winding assembly;

[0039] When the motor 6 is working, it drives the driving wheel 8 to rotate through the transmission member 7. The rotating driving wheel 8 drives the driven wheel 9 to rotate intermittently, thereby driving the winding assembly to work intermittently and driving the movable frame 3 to move forward intermittently along the guide member 2.

[0040] In another embodiment of the present invention, the winding assembly includes a winding disc 10 coaxially fixed to the driven wheel 9, two pulleys 12 rotatably mounted on the base 1 away from the motor 6, and a traction wire 11 passing through the pulleys 12 to connect the movable frame 3 and the winding disc 10;

[0041] One end of the traction wire 11 is fixed on the winding disk 10, and the other end is fixed on the side of the movable frame 3 close to the motor 6; the driven wheel 9 intermittently rotates to drive the winding disk 10 to follow the intermittent rotation, thereby intermittently winding the traction wire 11 and driving the movable frame 3 to move intermittently along the guide member 2.

[0042] In another embodiment of the present invention, the two contacts 22 are respectively mounted on the bracket 13 via two sets of elastic structures; the elastic structures include a sleeve 24 vertically fixed to the bracket 13, a sleeve rod 23 slidably engaged with the sleeve 24, and an elastic member 25 for elastically connecting the sleeve rod 23 and the sleeve 24;

[0043] A horizontal lifting member 21 is fixed to one end of the sleeve rod 23 extending out of the sleeve 24, and the contact 22 is fixed on the lifting member 21. The two contacts 22 are arranged on the same plumb line; the elastic member 25 in the elastic structure allows the sleeve rod 23 and the sleeve 24 to be elastically fitted together, thereby allowing the two contacts 22 to be elastically movable.

[0044] In another embodiment of the present invention, the two lifting members 21 are both connected to the winding structure, and a driving mechanism is provided between the bracket 13 and the movable frame 3, and the driving mechanism is connected to the winding structure via a transmission structure;

[0045] The driving mechanism includes a gear 14 horizontally mounted on one side of the bracket 13 and a plurality of spur racks 15 fixed horizontally and equidistantly on the side wall of the mobile frame 3; there is a gap between two adjacent spur racks 15, and the gear 14 is adapted to the teeth on the spur racks 15; when the traction wire 11 drives the mobile frame 3 to move forward along the guide member 2, the gear 14 intermittently cooperates with the spur racks 15 to drive the transmission structure to move during the forward movement, and then the transmission structure drives the winding structure to rotate, driving the two contacts 22 at the upper and lower parts to move closer to each other, connecting the positive and negative poles of the used lithium battery for life detection; when the gear 14 moves to the gap between the two spur racks 15, the elastic structure is used to drive the two contacts 22 to separate.

[0046] In another embodiment of the present invention, the winding structure includes a winding shaft 19 horizontally rotatably mounted on the bracket 13, two winding rollers 20 fixed to the winding shaft 19, and a pull rope 27 for connecting the two winding rollers 20 and the two lifting members 21; one end of the pull rope 27 is fixedly wound around the winding roller 20, and the other end is fixed to the lifting member 21; the winding directions of the pull rope 27 wound around the two winding rollers 20 are opposite;

[0047] When the gear 14 rotates, the winding shaft 19 is driven to rotate through the transmission structure, and the rotating winding shaft 19 drives the two winding rollers 20 to rotate in the same direction. Since the two pull ropes 27 are wound in opposite directions on the two winding rollers 20, the two lifting members 21 and the contact 22 are driven to move closer to each other when the winding shaft 19 and the winding rollers 20 rotate, and the sleeve rod 23 is inserted into the sleeve 24 to compress the elastic member 25; after the gear 14 is separated from the spur rack 15, the two lifting members 21 and the contact 22 are driven to separate from each other through the elastic member 25.

[0048] In another embodiment of the present invention, the transmission structure includes a rotating shaft 16 vertically rotatably arranged on one side of the bracket 13 and fixed to the gear 14, a first bevel gear 17 fixed to the rotating shaft 16, and a second bevel gear 18 fixed to the end of the winding shaft 19 and meshing with the first bevel gear 17;

[0049] When the gear 14 rotates, the shaft 16 is driven to rotate, and the shaft 16 drives the first bevel gear 17 to rotate. The first bevel gear 17 drives the second bevel gear 18 and the shaft 19 to rotate, thereby pulling the two contacts 22 closer to each other.

[0050] A method for detecting the life of a lithium battery using the waste lithium battery life detection system in the above embodiment comprises the following steps:

[0051] Step 1: Initial position adjustment: start the motor in reverse to completely release the traction wire from the winding drum and pull the movable frame to move it to the initial end of its stroke;

[0052] Step 2: Load the used lithium batteries. Place the used lithium batteries to be tested into the cannula, keeping the positive and negative poles of the used lithium batteries in the same direction and at the same height.

[0053] Step 3: Start the test. Use wires to connect the two contacts to the positive and negative poles of the ammeter respectively, start the motor in the forward direction, check the used lithium batteries on the mobile rack one by one, and judge the battery life according to the index on the ammeter;

[0054] Step 4: Unloading: After the waste lithium battery at the end passes the detection of two contacts and ammeter, turn off the motor and take out the waste lithium battery in the insertion tube on the mobile rack.

[0055] The above description is merely a description of the preferred embodiment of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiment, and variations in the specific structure are permitted. Any variations made within the scope of the independent claims of the present invention are also within the scope of protection of the present invention.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

Claims

1. A waste lithium battery life detection system for recycling, comprising a base (1) and a movable rack (3) horizontally arranged on the base (1) for storing waste lithium batteries, characterized in that: The movable frame (3) and the base (1) are connected via a traction structure; A bracket (13) is vertically fixed to the rear of the base (1), and the bracket (13) is provided with two contacts (22) that are lifted and lowered in opposite directions. The two contacts (22) are connected by a lifting structure. An ammeter (26) for detecting the life of waste lithium batteries is also provided between the two contacts (22). The positive pole of the ammeter (26) is electrically connected to one of the contacts (22) through a wire, and the negative pole of the ammeter (26) is electrically connected to the other contact (22) through another wire. A guide member (2) is fixed horizontally on the base (1), and a fitting member (4) is fixed on the side wall of the movable frame (3) and is horizontally slidably fitted with the guide member (2); a plurality of rubber-made inserts (5) are uniformly arranged through the movable frame (3); The traction structure comprises a winding assembly and an intermittent rotation assembly; the intermittent rotation assembly comprises an electric motor (6) mounted on the base (1) and a Maltese cross movement assembly mounted on the base (1); The Maltese cross movement assembly comprises a driving wheel (8) rotatably mounted on the base (1) and a driven wheel (9) rotatably mounted on the base (1) and cooperating with the driving wheel (8); the driving wheel (8) is connected to the output end of the motor (6) via a transmission member (7), and the driven wheel (9) is connected to the winding assembly; The winding assembly comprises a winding disc (10) coaxially fixed to the driven wheel (9), two pulleys (12) rotatably mounted on the base (1) away from the motor (6), and a traction wire (11) passing through the pulleys (12) to connect the movable frame (3) and the winding disc (10); One end of the traction wire (11) is fixed to the winding drum (10), and the other end is fixed to a side of the movable frame (3) close to the motor (6); The two contacts (22) are respectively mounted on the bracket (13) via two sets of elastic structures; the elastic structures include a sleeve (24) vertically fixed on the bracket (13), a sleeve rod (23) slidingly fitted with the sleeve (24), and an elastic member (25) for elastically connecting the sleeve rod (23) and the sleeve (24); A horizontal lifting member (21) is fixed to one end of the sleeve rod (23) extending out of the sleeve (24), and the contacts (22) are fixed on the lifting member (21). The two contacts (22) are arranged on the same plumb line.

2. A waste lithium battery life detection system for recycling according to claim 1, characterized in that: The two lifting members (21) are both connected to the winding structure, and a driving mechanism is provided between the bracket (13) and the movable frame (3), and the driving mechanism is connected to the winding structure via a transmission structure; The driving mechanism comprises a gear (14) mounted horizontally on one side of the bracket (13) and a plurality of spur racks (15) fixed horizontally and equidistantly on the side wall of the mobile rack (3); a gap is provided between two adjacent spur racks (15), and the gear (14) is adapted to the teeth on the spur racks (15).

3. A waste lithium battery life detection system for recycling according to claim 2, characterized in that: The winding structure comprises a winding shaft (19) horizontally rotatably arranged on the bracket (13), two winding rollers (20) fixed on the winding shaft (19), and a pull rope (27) for connecting the two winding rollers (20) and the two lifting members (21); One end of the pull rope (27) is fixedly wound on the winding roller (20), and the other end is fixed on the lifting member (21); the winding directions of the pull ropes (27) wound on the two winding rollers (20) are opposite.

4. A waste lithium battery life detection system for recycling according to claim 3, characterized in that: The transmission structure comprises a rotating shaft (16) vertically rotatably arranged on one side of the bracket (13) and fixed to the gear (14), a first bevel gear (17) fixed to the rotating shaft (16), and a second bevel gear (18) fixed to the end of the winding shaft (19) and meshing with the first bevel gear (17).

5. A method for detecting the life of a lithium battery using the waste lithium battery life detection system according to any one of claims 1 to 4, characterized in that: The steps include: Step 1: Initial position adjustment: start the motor in reverse to completely release the traction wire from the winding drum and pull the movable frame to move it to the initial end of its stroke; Step 2: Load the used lithium batteries. Place the used lithium batteries to be tested into the cannula, keeping the positive and negative poles of the used lithium batteries in the same direction and at the same height. Step 3: Start the test. Use wires to connect the two contacts to the positive and negative poles of the ammeter respectively, start the motor in the forward direction, check the used lithium batteries on the mobile rack one by one, and judge the battery life according to the index on the ammeter; Step 4: Unloading: After the waste lithium battery at the end passes the detection of two contacts and ammeter, turn off the motor and take out the waste lithium battery in the insertion tube on the mobile rack.

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