Retired lithium battery recycling device

Abstract

The utility model discloses a kind of retired lithium battery recovery devices, including detachably connected discharge box and battery holder;Battery holder includes bottom plate and side plate, bottom plate is equipped with the battery groove for fixing battery, the bottom of bottom plate is equipped with second traveling mechanism;Discharge box includes box, the front side and bottom of box are equipped with opening part, the side plate and bottom plate of battery holder are connected with opening part explosion-proof, and explosion-proof box is formed;The rear side of discharge box is equipped with several discharge units for discharging battery in battery groove;The two sides of discharge box are equipped with first traveling mechanism.The detachable connection design of discharge box and battery holder;Realize the separation of discharging and standing link in battery recycling process, greatly improve discharge box utilization rate.After discharging, only discharge box is detached from battery holder with battery from above, and discharge box can be immediately connected with the next battery holder filled with battery, start a new round of discharging operation, without waiting for battery standing.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery recycling technology, specifically to a device for recycling retired lithium batteries. Background Technology

[0002] The recycling of retired lithium batteries mainly includes steps such as discharging, dismantling, crushing, sorting, and metallurgical processing. Among these, discharging the used lithium batteries is the first and most critical safety step in the recycling process. Improper discharging operations can easily lead to serious accidents such as fires, explosions, and the release of toxic gases. Discharging the retired lithium batteries using an external load (such as a resistance box) is currently the most common method. During discharging, the battery surface temperature needs to be monitored in real time, and a temperature threshold (e.g., 50°C) needs to be set. If the temperature rises abnormally, discharging should be stopped immediately, and the battery should be moved to a safe area for observation. Industrially, discharging the battery to below 2.5V to 3.0V is generally considered to have reached the safe discharge target. For batteries to be dismantled and recycled later, they will not be completely discharged to 0V to avoid damaging the battery structure or introducing impurities (such as chemical discharge).

[0003] Currently, the common method for discharging retired lithium batteries involves placing the battery in a discharge box, connecting a discharge load, and discharging it. After discharge, the battery is usually placed in a safe area and left to stand for a period of time (e.g., 24 hours) to observe whether its voltage recovers and whether its temperature is abnormal. Only after confirming that it is stable can it proceed to the next stage. During the standing period, the battery occupies the discharge box and cannot continue to work, resulting in a waste of the discharge box's resources and a reduction in discharge efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a retired lithium battery recycling device to solve the problem of low discharge efficiency of existing retired lithium batteries.

[0005] To solve the above-mentioned technical problems, this utility model provides a retired lithium battery recycling device, including a detachably connected discharge box and a battery holder; the battery holder includes a base plate and a side plate installed on the front side of the base plate, the base plate is provided with a battery slot for fixing the battery, and the bottom of the base plate is provided with a second walking mechanism.

[0006] The discharge box includes a box body, with openings on the front and bottom sides of the box body that mate with the side plates and bottom plates of the battery holder. The side plates and bottom plates of the battery holder are connected to the openings in an explosion-proof manner to form an explosion-proof box. The rear side of the discharge box is provided with several discharge units for discharging the batteries in the battery slots. The two sides of the discharge box are provided with a first traveling mechanism.

[0007] Furthermore, the discharge unit includes a discharge load and an electrode connector electrically connected to the discharge load; the electrode connector is mounted on the rear wall of the discharge box and is in contact with the electrodes of the battery in the battery compartment for conduction.

[0008] Furthermore, the discharge box is equipped with a monitoring unit and a controller. The monitoring unit includes an HF monitor and an infrared sensor. An electric control switch is provided between the discharge load and the electrode connector. The output terminals of the HF monitor and the infrared sensor are connected to the input terminal of the controller, and the output terminal of the controller is connected to the electric control switch.

[0009] Furthermore, the top of the housing is provided with a sand storage chamber; the top of the sand storage chamber is provided with a sand replenishment port, the bottom of the sand storage chamber is provided with a sand leakage port, and an electric gate is provided at the sand leakage port; the monitoring unit also includes a flame monitor, the output end of the flame monitor is connected to the input end of the controller, and the output end of the controller is connected to the electric gate.

[0010] Furthermore, the front side of the housing is provided with a first flange surrounding the opening, and the side plate of the battery holder is fixedly connected to the first flange by a first fastener; the bottom of the housing is provided with a second flange surrounding the opening, and the bottom plate of the battery holder is fixedly connected to the second flange by a second fastener.

[0011] Furthermore, the first traveling mechanism includes four first universal wheels located at the four corners of the discharge box, and support frames connected to the second flange are respectively provided on both sides of the discharge box, with the first universal wheels fixed below the support frames.

[0012] Furthermore, the width between the two support frames is greater than the width of the base plate of the battery holder, and a guide block is provided on the side of the support frame facing the base plate of the battery holder, with a guide inclined surface at the front end of the guide block.

[0013] Furthermore, the second traveling mechanism includes four second omnidirectional wheels mounted at the four corners of the base plate of the battery holder.

[0014] Furthermore, a shock absorber is installed between the second omnidirectional wheel and the base plate of the battery holder.

[0015] The beneficial effects of this invention are as follows: By combining the battery holder and the discharge box, a closed, explosion-proof box is formed, which can control the potential risks of battery combustion and explosion within a sealed space, greatly improving the safety of the discharge process for retired lithium batteries. The design of detachable connection between the discharge box and the battery holder separates the discharge and resting stages, greatly improving the utilization rate of the discharge box. After discharge, simply remove the discharge box from the battery holder containing the battery, and leave the battery in place or move it as a whole to a safe area for observation. This avoids the frequent handling of individual batteries within the confined space of the discharge box, reducing the risk of short circuits due to collisions. With the battery fixed in the battery holder, only the battery holder needs to be moved as a whole. The discharge box can then be immediately connected to the next battery holder already filled with batteries to begin a new round of discharge operations, without waiting for the batteries to rest. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, use the same reference numerals to denote the same or similar parts. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a top view of the discharge box and battery holder when separated according to an embodiment of the present invention.

[0018] Figure 2 This is a top view of the discharge box and battery holder fixed together according to an embodiment of the present invention.

[0019] Figure 3 This is a rear view of the discharge box and battery holder fixed together according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of a discharge box according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of a battery holder according to an embodiment of the present invention.

[0022] The components are as follows: 1. Discharge box; 11. First flange; 12. First mounting hole; 13. Second flange; 14. Support frame; 15. First caster wheel; 2. Monitoring unit; 21. Sand leakage port; 3. Sand storage chamber; 31. Sand replenishment port; 4. Discharge chamber; 41. Discharge load; 42. Electrode connector; 5. Guide block; 6. Battery holder; 61. Base plate; 62. Side plate; 63. Second mounting hole; 7. Second caster wheel; 71. Shock absorber; 8. Battery slot; 81. Battery; 9. Second fastener. Detailed Implementation

[0023] like Figures 2 to 3 The retired lithium battery recycling device shown includes a detachably connected discharge box 1 and battery holder 6; as Figure 5 As shown, the battery holder 6 includes a base plate 61 and a side plate 62 mounted on the front side of the base plate 61. The base plate 61 is provided with a battery slot 8 for fixing the battery 81, and a second traveling mechanism is provided at the bottom of the base plate 61; Figure 4 As shown, the discharge box 1 includes a box body, and the front and bottom of the box body are provided with openings that cooperate with the side plate 62 and bottom plate 61 of the battery holder 6. The side plate 62 and bottom plate 61 of the battery holder 6 are connected to the openings in an explosion-proof manner to form an explosion-proof box. The rear side of the discharge box 1 is provided with a plurality of discharge units for discharging the batteries 81 in the battery slot 8. The two sides of the discharge box 1 are provided with a first walking mechanism.

[0024] This invention, through the cooperation of the battery holder 6 and the discharge box 1, forms a closed explosion-proof box, which can control the potential risks of battery 81 combustion and explosion within a sealed space, greatly improving the safety of the discharge process of retired lithium batteries 81. The design of detachable connection between the discharge box 1 and the battery holder 6 separates the discharge and resting stages, greatly improving the utilization rate of the discharge box 1. After discharge, simply remove the discharge box 1 from the battery holder 6 containing the batteries 81, and leave the batteries on the battery holder 6 in place or move them as a whole to a safe area for observation. This avoids the frequent handling of individual batteries 81 within the confined space of the discharge box 1, reducing the risk of short circuits due to collisions. With the batteries 81 fixed in the battery holder 6, only the battery holder 6 needs to be moved as a whole. The discharge box 1 can then be immediately connected to the next battery holder 6 already filled with batteries 81 to begin a new round of discharge operations, without waiting for the batteries 81 to rest.

[0025] According to one embodiment of this application, the discharge unit includes a discharge load 41 and an electrode connector 42 electrically connected to the discharge load 41. The electrode connector 42 is mounted on the rear wall of the discharge box 1 and makes contact with the electrodes of the battery 81 in the battery slot 8 for electrical conductivity. When the battery holder is docked with the discharge box, the electrodes of the battery 81 can automatically and accurately contact the electrode connector 42 on the discharge box, realizing rapid circuit connection, high degree of automation, and simple and efficient operation. Furthermore, by integrating the discharge load into the discharge box 1, the entire discharge system can be made compact, and it only needs to be connected to an external power source to operate.

[0026] According to one embodiment of this application, the discharge box 1 is equipped with a monitoring unit 2 and a controller. The monitoring unit 2 includes an HF monitor and an infrared sensor. An electronic switch is provided between the discharge load 41 and the electrode connector 42. The output terminals of the HF monitor and the infrared sensor are connected to the input terminal of the controller, and the output terminal of the controller is connected to the electronic switch. HF is a typical characteristic gas of lithium battery thermal runaway (a precursor to fire or explosion). The HF monitor can detect battery abnormalities very early and cut off the discharge circuit (electronic switch) through the controller before danger occurs, preventing further discharge from aggravating battery failure and nipping the accident in the bud. The infrared sensor can monitor the battery temperature in real time. When the temperature exceeds a set threshold, the controller also cuts off the discharge circuit (electronic switch) to stop the discharge.

[0027] According to one embodiment of this application, the top of the housing is provided with a sand storage chamber 3; the top of the sand storage chamber 3 is provided with a sand replenishment port 31, and the sand replenishment port 31 is equipped with an explosion-proof cover; the bottom of the sand storage chamber 3 is provided with a sand leakage port 21, and an electric gate is provided at the sand leakage port 21; the monitoring unit 2 also includes a flame detector, the output of which is signal-connected to the input of the controller, and the output of the controller is signal-connected to the electric gate. When the battery experiences the most dangerous open flame, the controller automatically opens the electric gate, and sand covers the battery through the sand leakage port, which can quickly suffocate the flame and isolate heat through the covering effect of the sand, preventing the fire from spreading. Using sand for fire extinguishing is a medium with good fire extinguishing effect and low cost.

[0028] According to one embodiment of this application, the front side of the enclosure is provided with a first flange 11 surrounding the opening, and the side plate 62 of the battery holder 6 is fixedly connected to the first flange 11 by a first fastener; the bottom of the enclosure is provided with a second flange 13 surrounding the opening, and the bottom plate 61 of the battery holder 6 is fixedly connected to the second flange 13 by a second fastener 9. The flange structure provides a larger contact and connection area, ensuring that after being connected by fasteners, a sufficiently tight and robust sealed connection can be formed between the discharge box 1 and the battery holder 6, ensuring that the explosion-proof box can effectively withstand pressure and isolate the danger inside in the event of an internal accident, thus guaranteeing the reliability of its explosion-proof function; the connection by using fasteners (such as bolts / nuts) is reliable, universal, and allows for repeated disassembly and installation.

[0029] According to one embodiment of this application, the first traveling mechanism includes four first universal wheels 15 disposed at the four corners of the discharge box 1. Support frames 14 connected to second flanges 13 are respectively provided on both sides of the discharge box 1. The first universal wheels 15 are fixed below the support frames 14. The support frames 14 may have an L-shaped cross-section, with the horizontal end of the support frame 14 connected to the edge of the second flange 13 (or may be integrally formed). The first universal wheels 15 are mounted on the bottom of the vertical portion of the support frame 14. The universal wheels facilitate the movement of the discharge box.

[0030] According to one embodiment of this application, the width between the two support frames 14 is greater than the width of the base plate 61 of the battery holder 6. A guide block 5 is provided on the side of the support frame 14 facing the base plate 61 of the battery holder 6, and the front end of the guide block 5 is provided with a guide inclined surface. By setting the guide block 5, assisted, fast, and accurate docking can be achieved. When the battery holder is pushed closer to the discharge box, the inclined surface of the guide block can automatically correct the position of the battery holder, guiding it to accurately slide into the correct docking position under the discharge box, reducing the requirements for the operator's alignment accuracy and improving docking efficiency and success rate.

[0031] According to one embodiment of this application, the second traveling mechanism includes four second casters 7 mounted at the four corners of the base plate 61 of the battery holder 6. By providing the second casters 7, the battery holder can be moved flexibly, allowing the battery holder loaded with heavy batteries to be moved easily, greatly reducing the labor intensity of workers and improving material flow efficiency.

[0032] According to one embodiment of this application, a shock absorber 71 is provided between the second omnidirectional wheel 7 and the base plate 61 of the battery holder 6. The shock absorber can buffer vibrations and impacts during the transportation of the battery holder, preventing battery damage or internal short circuits caused by bumps, thus preventing secondary risks. This is crucial for retired lithium batteries in unstable conditions.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A retired lithium battery recycling device, characterized in that, It includes a detachably connected discharge box and a battery holder; the battery holder includes a base plate and a side plate installed on the front side of the base plate, the base plate is provided with a battery slot for fixing the battery, and the bottom of the base plate is provided with a second walking mechanism; The discharge box includes a box body, the front and bottom of which are provided with openings that cooperate with the side plates and bottom plates of the battery holder. The side plates and bottom plates of the battery holder are connected to the openings in an explosion-proof manner to form an explosion-proof box. The rear side of the discharge box is provided with a plurality of discharge units for discharging the batteries in the battery slot. The two sides of the discharge box are provided with a first walking mechanism.

2. The retired lithium battery recycling device according to claim 1, characterized in that, The discharge unit includes a discharge load and an electrode connector electrically connected to the discharge load; the electrode connector is installed on the rear wall of the discharge box and is in contact with the electrodes of the battery in the battery compartment to conduct electricity.

3. The retired lithium battery recycling device according to claim 2, characterized in that, The discharge box is equipped with a monitoring unit and a controller. The monitoring unit includes an HF monitor and an infrared sensor. An electronic switch is provided between the discharge load and the electrode connector. The output terminals of the HF monitor and the infrared sensor are connected to the input terminal of the controller. The output terminal of the controller is connected to the electronic switch.

4. The retired lithium battery recycling device according to claim 3, characterized in that, The top of the housing is provided with a sand storage chamber; the top of the sand storage chamber is provided with a sand replenishment port, the bottom of the sand storage chamber is provided with a sand leakage port, and an electric gate is provided at the sand leakage port; the monitoring unit also includes a flame monitor, the output of the flame monitor is connected to the input of the controller, and the output of the controller is connected to the electric gate.

5. The retired lithium battery recycling device according to claim 1, characterized in that, The front side of the housing is provided with a first flange surrounding the opening, and the side plate of the battery holder is fixedly connected to the first flange by a first fastener; the bottom of the housing is provided with a second flange surrounding the opening, and the bottom plate of the battery holder is fixedly connected to the second flange by a second fastener.

6. The decommissioned lithium battery recycling device according to claim 5, characterized in that, The first traveling mechanism includes four first universal wheels located at the four corners of the discharge box. Support frames connected to the second flange are respectively provided on both sides of the discharge box, and the first universal wheels are fixed below the support frames.

7. The retired lithium battery recycling device according to claim 6, characterized in that, The width between the two support frames is greater than the width of the base plate of the battery holder. A guide block is provided on the side of the support frame facing the base plate of the battery holder, and a guide inclined surface is provided at the front end of the guide block.

8. The retired lithium battery recycling device according to claim 1, characterized in that, The second walking mechanism includes four second omnidirectional wheels mounted at the four corners of the base plate of the battery holder.

9. The decommissioned lithium battery recycling device according to claim 8, characterized in that, A shock absorber is provided between the second omnidirectional wheel and the base plate of the battery holder.

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