Lithium battery echelon recycling and grading storage system and storage management method

Abstract

The invention discloses a lithium battery echelon recycling and grading storage system and a storage management method.The lithium battery echelon recycling and grading storage system comprises a detection point and a plurality of stock points, and a conveying roller way assembly and a sorting roller way assembly are arranged between the detection point and the stock points; the sorting roller way assembly is connected between the conveying roller way assemblies in series, and the sorting roller way assembly is arranged to be capable of being turned over so that the battery modules conveyed to the sorting roller way assembly can slide out to a stock point. The conveying and sorting integrated system composed of the conveying roller way assembly and the sorting roller way assembly is established between the detection point and the multiple stock points, so that identification sorting can be performed according to different residual capacities of the battery modules, and the requirement of continuous grading storage can be met; and the problem of low efficiency caused by repeated stacking and carrying when a forklift or an AGV (Automatic Guided Vehicle) is used for transferring is also avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy battery resource utilization, and in particular relates to a lithium battery recycling grading storage system and a storage management method. Background Art

[0002] The process flow of lithium battery recycling includes initial screening, disassembly into modules, internal resistance testing, capacity rate testing, cell voltage difference testing, self-discharge testing, safety testing, and reorganization. The purpose is to screen out lithium batteries that are suitable for reuse and reorganize them into new battery packs for use in other fields or industries with slightly lower requirements, so as to improve the utilization efficiency of lithium batteries and avoid the high energy consumption and high pollution problems of complete disassembly and recycling of lithium batteries.

[0003] During the recycling process of lithium batteries, the capacity rate test is to detect whether the capacity of the battery cell meets the requirements of cascade utilization, and the battery cells are classified into grades based on the test results. Usually, the battery cells with a capacitance of more than 60% will be retained, and divided into five grades of 65-70%, 70-75%, 75-80%, 80-85%, and above 85% for group culture to ensure the stability and consistency of the electrical performance of the reorganized new battery pack.

[0004] The large-scale recycling of lithium batteries has higher requirements for recycling technology, transportation and inventory management. Different inventory sites need to be set up according to the planning of different grades of batteries for unified management. After the capacity rate test, the batteries need to be graded and stored separately according to the actual capacity. After setting up a unified inventory site for unified inventory management of a certain grade of batteries, conventional stacking is used and then long-distance transportation is carried out by forklifts or AGV transport vehicles. Manual or mechanical assistance is required to stack and transport twice at the inspection point and inventory point, which is inefficient and not conducive to efficient and safe management of battery cell transportation and circulation. Summary of the invention

[0005] In view of the above technical problems, this application proposes a lithium battery recycling and grading storage system and a storage management method system. The specific technical solutions are as follows:

[0006] A lithium battery recycling and grading storage system includes a detection point and a plurality of inventory points, wherein a conveying roller assembly and a sorting roller assembly are arranged between the detection point and the plurality of inventory points, wherein the sorting roller assembly is connected in series between the conveying roller assemblies, and wherein the sorting roller assembly is arranged to be flippable so that the battery module conveyed to the sorting roller assembly can slide out to the inventory point.

[0007] Furthermore, the conveying roller assembly comprises two fixed frames 1 which are arranged in parallel and at intervals, and a roller body 1 which is arranged between the two fixed frames 1; the sorting roller assembly comprises two fixed frames 2 which are arranged in parallel and at intervals, and a roller body 2 which is arranged between the two fixed frames 2, and the roller body 2 is rotatable; the sorting roller assembly has a fixed flip axis, and the flip axis is parallel to the length direction of the fixed frame 2.

[0008] Furthermore, a control component is provided on the sorting roller assembly, and the control component is arranged on the opposite side of the flip axis;

[0009] The control assembly includes a transmission box, a sliding sleeve, a sliding rod and a guide member;

[0010] The transmission box is fixed on the second fixing frame, and the transmission box has an input end and an output end, and the input end of the transmission box is fixedly connected to the end of any one of the second roller bodies on the sorting roller assembly;

[0011] The sliding sleeve is fixed to the transmission box, the sliding rod is slidably arranged in the sliding sleeve, and the output end of the transmission box is arranged in the sliding sleeve and acts on the sliding rod to make the sliding rod slide in the sliding sleeve;

[0012] The guide member is fixed to the end of the fixing frame adjacent to the second fixing frame, the end of the slide bar is provided with a clamping member that is separately matched with the guide member, and the guide member is provided with a clamping groove for accommodating the clamping member to enter.

[0013] Furthermore, a spring 1 is provided at the end of the sliding sleeve, and when the sliding rod retracts into the sliding sleeve, the spring 1 is squeezed so that the spring 1 stores elastic potential energy.

[0014] Furthermore, a guide hole is provided on the guide member, a guide pin is fixed at the end of the second fixing frame, the guide pin is slidably arranged in the guide hole, the guide hole is arc-shaped and is concentric with the turning axis of the sorting roller assembly.

[0015] Furthermore, the end of the sliding rod has an L-shaped retaining portion, the engaging member extends in the same direction along the length direction of the sliding rod, the end of the engaging member is slidably connected to one side of the L-shaped retaining portion, and a second spring is provided on the other side of the L-shaped retaining portion, and the second spring contacts the engaging member to apply an elastic force to the engaging member.

[0016] Furthermore, a ball bearing is arranged on the contact surface between the engaging member and the slot.

[0017] Furthermore, it also includes a tray for carrying the battery module, the outer surface of the roller body 1 is provided with an annular groove 1, the outer surface of the roller body 2 is provided with an annular groove 2, the number and position of the annular groove 1 and the annular groove 2 correspond, and a cavity is provided at the bottom of the tray, a protrusion and a rocker arm are installed in the cavity, the protrusion matches the annular groove 1 and the annular groove 2, the protrusion is rotatably connected in the cavity, the rocker arm is provided above the protrusion, and the top of the rocker arm has a rotating shaft.

[0018] Furthermore, the annular groove 1 and the annular groove 2 are V-shaped, and the protrusion matches the annular groove 1 and the annular groove 2.

[0019] The diameter of the roller body 2 connected to the input end of the transmission box is smaller than the diameter of the other roller bodies 2;

[0020] A protrusion is provided on the groove wall of an annular groove 2 on a roller body 2 fixedly connected to the input end of the transmission box, and a depression matching the protrusion is provided on the outer wall of the protrusion. The protrusion and the annular groove 2 generate friction only through contact between the protrusion and the depression to transmit the horizontal movement of the pallet to the roller body 2 fixedly connected to the input end of the transmission box.

[0021] The present application also records a lithium battery recycling tiered storage management method, which is applied to the above-mentioned lithium battery recycling tiered storage system, and the method is:

[0022] (1) According to the number of levels of lithium battery recycling, determine and install the conveyor roller assembly and the sorting roller assembly, and connect the inspection point and the inventory point through the conveyor roller assembly and the sorting roller assembly;

[0023] (2) Battery modules that meet the requirements for recycling at the inspection point are carried on different pallets according to the remaining capacity of the battery modules and transported through the conveyor roller assembly, so that the battery modules are sorted and slide out of the conveyor roller assembly on the sorting roller assembly corresponding to the inventory point matching its capacity.

[0024] The beneficial effects of the present invention are:

[0025] In the present application, an integrated conveying and sorting system consisting of a conveying roller assembly and a sorting roller assembly is established between the detection point and several inventory points, which can be used to identify and sort the battery modules according to their different remaining capacities. This not only meets the requirements of continuous tiered storage, but also avoids the inefficiency of repeated stacking and handling during transportation by forklifts or AGV transport vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 What is shown is a block diagram of a lithium battery recycling and grading storage system;

[0027] Figure 2What is shown is a schematic diagram of the connection state of the conveying roller assembly and the sorting roller assembly;

[0028] Figure 3 What is shown is a schematic diagram of the flip structure of the sorting roller assembly;

[0029] Figure 4 What is shown is a schematic diagram of the structure of the control component on the sorting roller assembly;

[0030] Figure 5 What is shown is the schematic diagram of the structure inside the transmission box;

[0031] Figure 6 What is shown is the schematic diagram of the internal structure of the sliding sleeve;

[0032] Figure 7 The figure shows a schematic diagram of the engagement state of the engagement member and the engagement slot;

[0033] Figure 8 What is shown is a schematic diagram of the connection structure between the engaging member and the sliding rod;

[0034] Fig. 9 What is shown is a schematic diagram of the structure in which the tray is in a horizontal state;

[0035] Fig.10 What is shown is a schematic diagram of the structure of the tray in a tilted state;

[0036] Fig.11 What is shown is the structural schematic diagram of the annular groove 2. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0038] Figure 1 The block diagram of the lithium battery recycling grading storage system is shown, and the grading storage system includes a detection point 100 and an inventory point 200, and the detection point 100 and the inventory point 200 are connected by a conveying roller assembly 300 and a sorting roller assembly 400, and the sorting roller assembly 400 is connected in series to the conveying roller assembly 300, and the sorting roller assembly 400 corresponds to the inventory point 200, so that the battery module of the detection point 100 is transported to the sorting roller assembly 400 through the conveying roller assembly 300, and then the sorting roller assembly 400 transports the battery module to different inventory points 200 according to the capacity difference of the battery module.

[0039] The number of inventory points 200 is determined according to the lithium battery recycling process. Usually, the number of inventory points 200 is determined by the number of lithium battery grades in the recycling process. The number of sorting roller assemblies 400 is also adjusted accordingly with the inventory points 200.

[0040] The inspection point 100 refers to equipment, personnel, or buildings and spaces that carry the aforementioned equipment, etc., which have the function of inspecting battery capacity and electrical performance; the inventory point 200 refers to a spatial component used for unified storage and management of battery modules, such as a three-dimensional warehouse.

[0041] Figure 2 What is shown is a schematic diagram of the connection status of the conveying roller assembly 300 and the sorting roller assembly 400. For example, two groups of conveying roller assemblies 300 are provided, and one group of sorting roller assemblies 400 is provided, and the sorting roller assembly 400 is provided between the two groups of conveying roller assemblies 300.

[0042] The conveyor roller assembly 300 includes two parallel and spaced fixed frames 301 and a roller body 320 disposed between the two fixed frames 310. The roller body 320 is rotatable. For example, the rotation of the roller body 320 is achieved by installing bearings at both ends of the roller body 320 and connecting the roller body 320 to the fixed frame 310 using a bearing seat.

[0043] The sorting roller assembly 400 is configured to be flippable between the conveying roller assemblies 300, and has a fixed flip axis, so that the conveying state of the battery module on the sorting roller assembly 400 can be controlled by the flipping state of the sorting roller assembly 400. When the sorting roller assembly 400 remains flush with the conveying roller assembly 300, the battery module remains in the conveying state. When the sorting roller assembly 400 flips and tilts around its flip axis, the battery module slides out of the sorting roller assembly 400 along its tilting direction, thereby entering a specific inventory point 200.

[0044] The sorting roller assembly 400 includes two parallel and spaced apart fixed frames 410 and a roller body 420 disposed between the two fixed frames 410. The roller body 420 is rotatable. For example, the rotation of the roller body 420 is achieved by installing bearings at both ends of the roller body 420 and connecting the roller body 420 to the fixed frames 410 using bearing seats.

[0045] The setting position of the flip axis should be parallel to the length direction of the fixed frame 410, but it is not required to overlap. The distance between the flip axis and the fixed frame 410 and the spatial position relationship in the up, down, left and right directions may not be specifically limited. It only needs to meet the requirement that after the sorting roller assembly 400 is flipped around the flip axis, the sorting roller assembly 400 is tilted and no longer flush with the conveying roller assembly 300.

[0046] For example, Figure 3The diagram shows the flip structure of the sorting roller assembly 400. The sorting roller assembly 400 is connected to the conveying roller assembly 300 through a flip assembly. The flip assembly includes a connector 501, a connector 502 and a pin 503. The connector 501 is fixed to the end of the fixing frame 301, and the connector 502 is fixed to the end of the fixing frame 410. The pin 503 is used as the flip axis of the sorting roller assembly 400. The connector 501 and the connector 502 are connected through the pin, so that the connector 501 and the connector 502 can rotate around the pin 503. The flip assembly is arranged in two groups and installed at both ends of one of the fixing frames 410, and the sorting roller assembly 400 is connected to the conveying roller assembly 300 through the flip assembly.

[0047] In addition, in some other specific embodiments, the flip component can be set separately, for example, the connection relationship between connector 1 501, connector 2 502 and pin 503, as well as the connection relationship between connector 2 502 and fixing frame 2 410 are retained, and connector 1 501 can also be fixed at other positions.

[0048] A control component is also provided on the sorting roller assembly 400. The control component is provided on the opposite side of the flipping component, that is, the control component and the flipping component are respectively fixed on different fixing frames 410 of the sorting roller assembly 400. The control component is provided to keep the sorting roller assembly 400 flush with the conveying roller assembly 300, and at the same time, the sorting roller assembly 400 is flipped and tilted by changing the flush state of the sorting roller assembly 400 with the conveying roller assembly 300 through the cooperation control with the battery module conveyed to the sorting roller assembly 400.

[0049] For example, Figure 4The structure diagram of the control assembly on the sorting roller assembly 400 is shown, and the control assembly includes a transmission box 601, a sleeve 602, a slide rod 603 and a guide member 604; wherein the transmission box 601 is fixed on the fixed frame 410, and the transmission box 601 has an input end and an output end, and the input end of the transmission box 601 is fixedly connected to the end of any roller body 420 on the sorting roller assembly 400, so that the rotation state of the roller body 420 is transmitted to the inside of the transmission box 601; the sleeve 602 is fixed to the transmission box 601, and the slide rod 603 slides It is arranged in the sliding sleeve 602, and the output end of the transmission box 601 is arranged in the sliding sleeve 602 and acts on the sliding rod 603, so that after the rotation of the roller body 2 420 is transmitted to the sliding rod 603 through the transmission box 601, the sliding rod 603 can slide in the sliding sleeve 602 to extend or retract the sliding sleeve 602; the guide member 604 is fixed to the end of the fixing frame 1 301 adjacent to the fixing frame 2 410, and the end of the sliding rod 603 is provided with a snap-fitting member 605 which is separately matched with the guide member 604, and the guide member 604 is provided with a slot 606 for accommodating the snap-fitting member 605 to enter.

[0050] In the present application, in the non-conveying state, the engaging member 605 and the slot 606 are in the engaging state, and the slot 606 limits the engaging member 605 to provide support for the sorting roller assembly 400, so that the sorting roller assembly 400 and the conveying roller assembly 300 remain flush; the control method of the control component is that when the battery module enters the sorting roller assembly 400 during the conveying process, if the battery module matches the sorting requirement of the sorting roller assembly 400 (generally capacity matching), the conveying of the battery module will act on the roller body 2 420 connected to the transmission box 601, so that the roller body 2 420 rotates and is transferred to the slide bar 603 through the transmission box 601, and the slide bar 603 is further acted on to retract into the inside of the sliding sleeve 602. During this process, the engaging member 605 at the end of the slide bar 603 will slide out of the slot 606 until the two are completely separated, and the sorting roller assembly 400 loses its support and flips downward.

[0051] For example, Figure 5 The schematic diagram of the structure inside the transmission box 601 is shown. The transmission box 601 is provided with a gear 1 611, a gear 2 622 and a gear 3 633. The gear 1 611 and the gear 2 622 are meshed with each other. The shaft of the gear 1 611 is fixedly connected to the end of the roller body 2 420 as the input end of the transmission box 601. The gear 2 622 is coaxially fixed with the gear 3 633. The sliding rod 603 is provided with meshing teeth so that the gear 3 633 and the sliding rod 603 are meshed with each other. Figure 4When the battery module contacts the roller body 420 and causes the roller body 420 to rotate clockwise, the gear 1 611 rotates clockwise synchronously, and the gear 2 622 rotates counterclockwise synchronously, and at the same time drives the gear 3 633 to rotate counterclockwise, and the slide rod 603 retracts into the inside of the slide sleeve 602 under the meshing action of the gear 3 633.

[0052] Figure 6 What is shown is a schematic diagram of the internal structure of the sleeve 602. A spring 607 is set at the end of the sleeve 602. When the slide rod 603 retracts into the sleeve 602, the spring 607 is squeezed to store elastic potential energy. When the battery module slides out, the roller body 420 loses the function of the battery module, and the spring 607 releases its elastic potential energy to quickly reset the slide rod 603.

[0053] Figure 7 What is shown is a schematic diagram of the engagement state of the engagement member 605 and the engagement slot 606. A guide hole 609 is also provided on the guide member 604. A guide pin 608 is fixed to the end of the fixing frame 410. The guide pin 608 is slidably arranged in the guide hole 609. The guide hole 609 is arc-shaped and is concentric with the flipping axis of the sorting roller assembly 400. During the flipping process of the sorting roller assembly 400, the guide pin 608 slides in the guide hole 609 to help maintain the stability of the flipping of the sorting roller assembly 400.

[0054] In order to reduce the resistance when the engaging member 605 and the slot 606 slide away, a ball is set on the contact surface of the engaging member 605 and the slot 606, and rolling friction is used instead of sliding friction. The ball can be installed on the engaging member 605 or on the slot 606.

[0055] Figure 8 What is shown is a schematic diagram of the connection structure between the engaging member 605 and the sliding rod 603, wherein the engaging member 605 is movably arranged at the end of the sliding rod 603, and the end of the sliding rod 603 has an L-shaped retaining portion 603a, the engaging member 605 extends in the same direction along the length direction of the sliding rod 603, and the end of the engaging member 605 is slidably connected to one side of the L-shaped retaining portion 603a, and a spring 2 603b is arranged on the other side of the L-shaped retaining portion 603a, and the spring 2 603 abuts against the engaging member 605 to apply an elastic force to the engaging member 605, so that the engaging member 605 is retained in the slot 606.

[0056] When the battery module enters the sorting roller assembly 400 and triggers the sorting roller assembly 400 to flip, the engaging part 605 will slide out of the slot 606. At the same time, as the sorting roller assembly 400 flips to the bottom, the slide bar 603 will be lower than the end of the guide member 604. After the battery module slides out of the sorting roller assembly 400, the slide bar 603 will reset again to move the engaging part 605 to the bottom of the guide member 604. During the upward flipping and resetting process of the sorting roller assembly 400, the engaging part 605 will move outward and squeeze the spring 2 603b until the engaging part 605 moves to the slot 606 and then rebounds under pressure to get into the slot 606 again.

[0057] A lifting cylinder (not shown in the figure) can be correspondingly provided at the bottom of the sorting roller assembly 400. When the sorting roller assembly 400 is turned over to the bottom, the lifting cylinder lifts up and resets the sorting roller assembly 400.

[0058] Combination Figure 2 and Figure 4 In order to facilitate the transportation and inventory management of battery modules according to the different capacities of the battery modules, in the present application, an annular groove 321 is provided on the outer surface of the roller body 320, and an annular groove 421 is provided on the outer surface of the roller body 420. The number and position of the annular groove 321 and the annular groove 421 correspond to each other, and the number of the annular groove 321 and the annular groove 421 is determined according to the number of grades for storing the battery modules; in addition, a tray 700 for carrying the battery modules is also provided.

[0059] Fig. 9 What is shown is a schematic diagram of the structure of a tray 700, wherein a cavity 701 is provided at the bottom of the tray 700, and a protrusion 702 and a rocker arm 703 are installed in the cavity 701, the protrusion 702 matches with the annular groove 1 321 and the annular groove 2 421, and the protrusion 702 is rotatably connected in the cavity 701, and the rocker arm 703 is provided above the protrusion 702, and the rocker arm 703 can rotate around its top.

[0060] When the tray 700 is in a horizontal state, the swing rod 70 is in a vertical state and abuts against the top of the protrusion 702. In this state, the protrusion 702 is actuated by the swing rod 70 and rotates into the cavity 701, thereby maintaining stable contact with the annular groove 1 321 and the annular groove 2 421.

[0061] When the sorting roller assembly 400 is turned downward, Fig. 9 Taking the state shown as an example, the tray 700 placed on the sorting roller assembly 400 will also tilt, causing the swing rod 703 to swing to the left, thereby releasing the resistance to the protrusion 702. In addition, the tray 700 is also in a tilted state at this time. During the downward sliding of the tray, the protrusion 702 will rotate and retract into the cavity 701. Fig.10shown.

[0062] Fig.11 What is shown is a schematic diagram of the structure of the annular groove 421. The annular groove 421 is V-shaped and matches the protrusion 702. The groove wall of the annular groove 421 has a protrusion. The corresponding protrusion 702 is provided with a depression matching the protrusion on the outer wall in contact with the annular groove 421. Only when the position of the protrusion 702 is consistent with the position of the annular groove 421 with the protrusion, can the protrusion 702 contact the annular groove 421 and generate friction to drive the roller body 420 to rotate. If the annular groove 421 with the protrusion is inconsistent with the position of the protrusion 702 (misaligned), there will be a gap between the groove wall of the annular groove 421 and the protrusion 702, and no friction to drive the roller body 420 to rotate can be generated.

[0063] In addition, the roller body 2 420 connected to the input end of the transmission box 601 should be set to be driven without external assistance, that is, the rotation of the roller body 2 420 only relies on the friction between the contact between the protrusion 702 and the annular groove 2 421, and the force of the spring 1 607 releasing the elastic potential energy to quickly reset the slide bar 603; other roller bodies 2 420 can be set to be driven by a motor or other power to ensure that the tray 700 can be stably transmitted and moved.

[0064] On the other hand, the diameter of the roller body 2 420 connected to the input end of the transmission box 601 is smaller than the diameter of the other roller bodies 2 420. Since the flipping of the sorting roller assembly 400 depends on the friction generated by the contact between the protrusion 702 set at the bottom of the tray 700 and the annular groove 2 421, it is necessary to reduce the interference of the unmatched tray 700, that is, when the tray 700 carrying battery modules of other grades enters the sorting roller assembly 400, the roller body 2 420 connected to the input end of the transmission box 601 will not contact the bottom of the tray 700, and the tray The protrusion 702 at the bottom of 700 does not correspond to the position of the second annular groove 421 on the sorting roller assembly 400. In this state, the second roller body 420 connected to the input end of the transmission box 601 will not rotate, and the tray 700 carrying battery modules of other grades will slide over the sorting roller assembly 400 and be transported to the next sorting roller assembly 400 via the conveying roller assembly 300 until the grades are matched. At the same time, the protrusion 702 at the bottom of the tray 700 corresponds to the position of the second annular groove 421 on the sorting roller assembly 400, triggering the second roller body 420 to rotate.

[0065] In addition, the present application also provides a lithium battery tiered recycling storage management method based on the above lithium battery tiered recycling storage system, the method comprising the following steps:

[0066] (1) According to the number of levels of lithium battery recycling, the conveying roller assembly 300 and the sorting roller assembly 400 are determined and installed, and the inspection point 100 and the inventory point 200 are connected through the conveying roller assembly 300 and the sorting roller assembly 400;

[0067] (2) The battery modules that meet the requirements for recycling at the inspection point 100 are transported through the conveying roller assembly 300 and transferred to different inventory points 200 for inventory management at the sorting roller assembly 400 according to the remaining capacity of the battery modules.

[0068] In the above step (1), an annular groove 321 is provided on the outer surface of the roller body 1 320 of the conveying roller assembly 300, and the number of the annular grooves 1 321 is not less than the number of levels of lithium battery recycling; at the same time, an annular groove 2 421 is provided on the outer surface of the roller body 2 420 of the sorting roller assembly 400, and the number of the annular grooves 2 421 is not less than the number of levels of lithium battery recycling, and the positions of the annular grooves 1 321 and the annular grooves 2 421 should also be kept corresponding.

[0069] In addition, it is also necessary to set a protrusion on the groove wall of a certain annular groove 421 of the roller body 420 connected to the transmission box 601, and ensure that the position of the protrusion set on the sorting roller assembly 400 corresponding to each inventory point 200 is different. For example, the protrusion on the first sorting roller assembly 400 (closest to the detection point 100) is set in the outermost annular groove 421 on the roller body 420, and the protrusion on the second sorting roller assembly 400 (100 times closer to the detection point) is set in the second outermost annular groove 421 on the roller body 420, and so on.

[0070] In the above step (2), the battery modules should be placed in a tray 700 for transportation, and a tray 700 with different positions of the bottom protrusion 702 is selected according to the different remaining capacities of the battery modules. The position of the bottom protrusion 702 of the tray 700 corresponds to the position of the raised annular groove 421; illustratively, the inventory point 200 corresponding to the first sorting roller assembly 400 is used to store and manage battery modules with a capacity of more than 85%. When the capacity of a battery module detected by the detection point 100 is 90%, a tray 700 with the bottom protrusion 702 in the outermost annular groove 421 is selected.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. The lithium battery recycling and grading storage system includes a detection point and several inventory points, characterized in that: A conveying roller assembly and a sorting roller assembly are arranged between the detection point and several inventory points. The sorting roller assembly is connected in series between the conveying roller assemblies. The sorting roller assembly is arranged to be flippable so that the battery module conveyed to the sorting roller assembly can slide out to the inventory point.

2. The lithium battery recycling and grading storage system according to claim 1 is characterized in that: The conveying roller assembly comprises two fixed frames 1 arranged in parallel and at intervals, and a roller body 1 arranged between the two fixed frames 1; the sorting roller assembly comprises two fixed frames 2 arranged in parallel and at intervals, and a roller body 2 arranged between the two fixed frames 2, and the roller body 2 is rotatable; the sorting roller assembly has a fixed flip axis, and the flip axis is parallel to the length direction of the fixed frame 2.

3. The lithium battery recycling and grading storage system according to claim 2 is characterized in that: The sorting roller assembly is provided with a control assembly, and the control assembly is arranged on the opposite side of the flip axis; The control assembly includes a transmission box, a sliding sleeve, a sliding rod and a guide member; The transmission box is fixed on the second fixing frame, and the transmission box has an input end and an output end, and the input end of the transmission box is fixedly connected to the end of any one of the second roller bodies on the sorting roller assembly; The sliding sleeve is fixed to the transmission box, the sliding rod is slidably arranged in the sliding sleeve, and the output end of the transmission box is arranged in the sliding sleeve and acts on the sliding rod to make the sliding rod slide in the sliding sleeve; The guide member is fixed to the end of the fixing frame adjacent to the second fixing frame, the end of the slide bar is provided with a clamping member that is separately matched with the guide member, and the guide member is provided with a clamping groove for accommodating the clamping member to enter.

4. The lithium battery recycling and grading storage system according to claim 3 is characterized in that: A spring 1 is arranged at the end of the sliding sleeve, and when the sliding rod retracts into the sliding sleeve, the spring 1 is squeezed so that the spring 1 stores elastic potential energy.

5. The lithium battery recycling and grading storage system according to claim 4 is characterized in that: The guide member is also provided with a guide hole, a guide pin is fixed at the end of the second fixing frame, and the guide pin is slidably arranged in the guide hole. The guide hole is arc-shaped and is concentric with the turning axis of the sorting roller assembly.

6. The lithium battery recycling and grading storage system according to claim 5 is characterized in that: The end of the sliding rod has an L-shaped retaining portion, and the engaging member extends in the same direction along the length direction of the sliding rod. The end of the engaging member is slidably connected to one side of the L-shaped retaining portion, and a second spring is provided on the other side of the L-shaped retaining portion. The second spring contacts the engaging member and applies an elastic force to the engaging member.

7. The lithium battery recycling and grading storage system according to claim 6 is characterized in that: A ball bearing is arranged on the contact surface between the engaging member and the slot.

8. The lithium battery recycling and grading storage system according to claim 7 is characterized in that: It also includes a tray for carrying the battery module, wherein an annular groove 1 is arranged on the outer surface of the roller body 1, and an annular groove 2 is arranged on the outer surface of the roller body 2, and the number and position of the annular groove 1 and the annular groove 2 correspond to each other. A cavity is arranged at the bottom of the tray, and a protrusion and a rocker arm are installed in the cavity. The protrusion matches the annular groove 1 and the annular groove 2, and the protrusion is rotatably connected in the cavity. The rocker arm is arranged above the protrusion, and the top of the rocker arm has a rotating shaft.

9. The lithium battery recycling and grading storage system according to claim 8, characterized in that: The annular groove 1 and the annular groove 2 are V-shaped, and the protrusion matches the annular groove 1 and the annular groove 2. The diameter of the roller body 2 connected to the input end of the transmission box is smaller than the diameter of the other roller bodies 2; A protrusion is provided on the groove wall of an annular groove 2 on a roller body 2 fixedly connected to the input end of the transmission box, and a depression matching the protrusion is provided on the outer wall of the protrusion. The protrusion and the annular groove 2 generate friction only through contact between the protrusion and the depression to transmit the horizontal movement of the pallet to the roller body 2 fixedly connected to the input end of the transmission box.

10. A lithium battery recycling and storage management method, characterized in that: The method is applied to the lithium battery recycling and grading storage system according to claim 9, and the method is: (1) According to the number of levels of lithium battery recycling, determine and install the conveyor roller assembly and the sorting roller assembly, and connect the inspection point and the inventory point through the conveyor roller assembly and the sorting roller assembly; (2) Battery modules that meet the requirements for recycling at the inspection point are carried on different pallets according to the remaining capacity of the battery modules and transported through the conveyor roller assembly, so that the battery modules are sorted and slide out of the conveyor roller assembly on the sorting roller assembly corresponding to the inventory point matching its capacity.

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