Lithium battery jelly roll conveying system and control method

Abstract

A lithium battery jelly roll conveying system and a control method. The system comprises: first cell fabrication machines (11) and second cell fabrication machines (12), used for fabricating first cells and second cells; a first main conveyor line (21), first branch conveyor lines (31) connected to the first main conveyor line (21), second main conveyor lines (22), and second branch conveyor lines (32) connected to the second main conveyor lines (31); interlayer elevators (5), each used for moving trays among an empty tray layer (41), a full tray layer (42), a first buffer layer (43) and a second buffer layer (44); tray positioning mechanisms (6), used for positioning trays; discharging machines (7), used for grabbing, lifting and moving the first cells or the second cells; and a first assembling and feeding mechanism (A) and a second assembling and feeding mechanism (B), each used for receiving the first cells and the second cells and feeding and assembling the received cells. There are four layers of conveyor lines; during normal production, only the bottom two layers are used; and in the event of an assembly equipment failure, the generated full trays can be buffered on a fourth full tray buffer layer until the empty tray buffer is depleted.

Description

A lithium battery core conveying system and control method Technical Field

[0001] This invention relates to the technical field of lithium batteries, and more particularly to a lithium battery core conveying system. Background Technology

[0002] With the relative maturity of new energy vehicle and energy storage system technologies, corresponding battery products have entered the market in large quantities. Currently, the market demand for battery modules is growing rapidly, and the production capacity of battery cells has become crucial for related companies to seize market share in a timely manner. Therefore, the production capacity and product quality of each process production line must continuously improve. In the lithium-ion battery manufacturing process, the cell preparation machine processes and presses two types of cells, A and B. These two types of cells can be transported to the same assembly process via a pallet conveyor production line. The assembly process then processes one A cell and one B cell into a semi-finished cell. Because current cell preparation machines can cause cell damage when the equipment stops, and the assembly process requires the same number of A and B cells, to avoid affecting cell quality and production efficiency, whether it's a short-term failure in the assembly process or a short-term failure in the cell preparation machine, the equipment needs to be kept running as infrequently as possible. Therefore, the pallet conveyor production line needs to have a certain pallet buffering capacity. Existing pallet conveyor production lines cannot meet the production requirements of simple equipment, high efficiency, and independent empty / full buffer storage. Therefore, a simple, efficient, and automated pallet conveyor production line that meets actual production needs is required. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a lithium battery core conveying system and control method.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A lithium battery core conveying system, comprising:

[0006] The first battery cell manufacturing machine and the second battery cell manufacturing machine are used to manufacture the first battery cell and the second battery cell;

[0007] A first main conveyor line, a first branch conveyor line connected to the first main conveyor line, a second main conveyor line, and a second branch conveyor line connected to the second main conveyor line, wherein the first main conveyor line and the second main conveyor line are located between the first cell fabrication machine and the second cell fabrication machine, and each of the first main conveyor line, the first branch conveyor line, the second main conveyor line, and the second branch conveyor line includes, from bottom to top, an empty tray layer, a full tray layer, a first buffer layer, and a second buffer layer;

[0008] An inter-floor elevator moves empty or full pallets between the empty pallet floor, the full pallet floor, the first buffer floor, and the second buffer floor.

[0009] A pallet positioning mechanism for positioning empty pallets moved to the full pallet layer on the first and second conveyor lines;

[0010] The unloading machine is used to grab, lift, and move the first or second battery cell produced by the first or second battery cell manufacturing machine, and place the first or second battery cell on the empty tray of the full tray layer that is positioned.

[0011] The first assembly feeding mechanism and the second assembly feeding mechanism are located at the ends of the first main conveyor line and the second main conveyor line, respectively. Each of the first assembly feeding mechanism and the second assembly feeding mechanism is used to receive the first battery cell and the second battery cell and to perform feeding and assembly.

[0012] In the aforementioned lithium battery core conveying system, each of the first assembly feeding mechanism and the second assembly feeding mechanism includes:

[0013] An external conveyor line is arranged adjacent to either the first main conveyor line or the second main conveyor line.

[0014] A first assembly feeding conveyor line is connected to either the first main conveyor line or the second main conveyor line.

[0015] The second assembly feeding conveyor line is connected to the outer conveyor line.

[0016] In the aforementioned lithium battery core conveying system, each of the first assembly feeding mechanism and the second assembly feeding mechanism includes:

[0017] The first lifting and traversing mechanism is used to lift and traverse the pallet between the outer conveyor line and the second assembly and loading conveyor line;

[0018] The second lifting and traversing mechanism is used to lift and traverse the pallet between the first main conveyor line and the first assembly loading conveyor line, or between the second main conveyor line and the first assembly loading conveyor line.

[0019] The aforementioned lithium battery core conveying system further includes:

[0020] The first lifting and traversing mechanism group is used to lift and traverse the pallet between the first main conveyor line and the outer conveyor line of the first assembly and loading mechanism;

[0021] The second lifting and traversing mechanism assembly is used to lift and traverse the pallet between the second main conveyor line and the outer conveyor line of the second assembly and loading structure.

[0022] The aforementioned lithium battery core conveying system further includes:

[0023] The third and fourth lifting and traversing mechanism groups are both used to lift and traverse the pallet between the first main conveyor line and the second main conveyor line.

[0024] In the aforementioned lithium battery core conveying system, both the first main conveying line and the second main conveying line are equipped with inter-level elevators in the middle.

[0025] The lithium battery core conveying system described above includes a first main conveying line and a second main conveying line, each of which includes a plurality of conveying line modules. Each conveying line module includes an empty pallet layer, a full pallet layer, a first buffer layer, and a second buffer layer.

[0026] Each of the conveyor line modules operates independently, and each of the conveyor line modules has several pallet stations.

[0027] The aforementioned lithium battery core conveying system includes a plurality of first cell preparation systems on the first main conveyor line. Each first cell preparation system includes a first cell preparation machine, a first branch conveyor line, an inter-layer elevator, a tray positioning mechanism, and a feeding machine.

[0028] The second main conveyor line is equipped with multiple second cell preparation systems. Each second cell preparation system includes a second cell preparation machine, a second branch conveyor line, an inter-layer elevator, a tray positioning mechanism, and a feeding machine.

[0029] A control method for a lithium battery core conveying system, applicable to any one of the lithium battery core conveying systems described above, the control method comprising:

[0030] Empty pallets are transported from the empty pallet layer of the first conveyor line or the empty pallet layer of the second conveyor line to the full pallet layer of the first conveyor line or the full pallet layer of the second conveyor line via the inter-level elevator;

[0031] The pallet positioning mechanism positions the empty pallet.

[0032] The unloading machine grabs, lifts, moves, and places the first or second battery cell into the empty tray to obtain a full tray.

[0033] A full pallet on the first or second branch conveyor line is transferred to the first or second main conveyor line;

[0034] The first main conveyor line and the second main conveyor line respectively transfer the full pallet carrying the first battery cell and the full pallet carrying the second battery cell to one of the first assembly loading mechanism and the second assembly loading mechanism, and perform loading and assembly.

[0035] A control method for a lithium battery core conveying system, applicable to any one of the lithium battery core conveying systems described above, the control method comprising:

[0036] A first pallet carrying a first battery cell is transported on the first main conveyor line, and a second pallet carrying a second battery cell is transported on the second main conveyor line;

[0037] One of the first pallet and the second pallet enters the second assembly loading conveyor line via the outer conveyor line;

[0038] The first pallet and the other of the second pallet enter the first assembly loading conveyor line via the second main conveyor line or the first main conveyor line.

[0039] The present invention, by employing the above-mentioned technology, has the following positive effects compared with the prior art:

[0040] (1) The conveyor line of the present invention has four layers, wherein the four layers correspond to the empty pallet layer, the full pallet layer, the empty pallet buffer layer, and the full pallet buffer layer, respectively. During normal production, only the bottom two layers are used. When the assembly equipment fails and cannot consume the batteries generated by the cutting, the generated full pallets can be buffered in the fourth full pallet buffer layer until the empty pallet buffer is consumed.

[0041] (2) The first main conveying line and the second main conveying line of the present invention adopt a four-branch diversion design before entering the assembly equipment. The two types of battery cell trays can be delivered to the assembly loading section through relatively independent lines, thus solving the bottleneck limitation of the equipment. Attached Figure Description

[0042] Figure 1 is a schematic diagram of the lithium battery core conveying system of the present invention.

[0043] Figure 2 is a schematic diagram of the first cell preparation system of the lithium battery core conveying system of the present invention.

[0044] Figure 3 is a side view of the conveyor line of the lithium battery core conveying system of the present invention.

[0045] Figure 4 is an enlarged schematic diagram of the end of the main conveyor line of the lithium battery core conveying system of the present invention.

[0046] Figure 5 is an enlarged schematic diagram of Figure 4 of the lithium battery core conveying system of the present invention.

[0047] In the attached diagram: 11. First cell fabrication machine; 12. Second cell fabrication machine; 21. First main conveyor line; 31. First branch conveyor line; 22. Second main conveyor line; 32. Second branch conveyor line; 41. Empty pallet layer; 42. Full pallet layer; 43. First buffer layer; 44. Second buffer layer; 5. Interlayer elevator; 6. Pallet positioning mechanism; 7. Unloading machine; A. First assembly loading mechanism; B. Second assembly loading mechanism; 81. External conveyor line; 82. First assembly loading conveyor line; 83. Second assembly loading conveyor line; 84. First lifting and traversing mechanism; 85. Second lifting and traversing mechanism; 86. First lifting and traversing mechanism group; 87. Second lifting and traversing mechanism group; 88. Third lifting and traversing mechanism group; 89. Fourth lifting and traversing mechanism group; 9. Main conveyor line interlayer elevator; X. First direction. Detailed Implementation

[0048] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] In the description of this invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "lateral", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention.

[0050] It should be noted that the terms "horizontal" and "vertical" in this invention are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0051] Please refer to Figures 1 to 5, which illustrate a preferred embodiment of a lithium battery core conveying system, including: a first cell preparation machine 11 and a second cell preparation machine 12, for preparing a first cell and a second cell.

[0052] Specifically, multiple sets of the first cell fabrication machine 11 and the second cell fabrication machine 12 can be arranged together, with multiple sets of the first cell fabrication machine 11 and the second cell fabrication machine 12 connected in series.

[0053] Specifically, this configuration allows for the provision of first and second cells in pairs even when one set of first cell fabrication machines 11 and the other set of second cell fabrication machines 12 fail. More specifically, when only one of the first cell fabrication machines 11 and the second cell fabrication machine 12 fails, the supply quantity of the first and second cells can still be adjusted using the conveying method of the lithium battery core conveying system of this embodiment.

[0054] Furthermore, as a preferred embodiment, the lithium battery core conveying system further includes: a first main conveying line 21, a first branch conveying line 31 connected to the first main conveying line 21, a second main conveying line 22, and a second branch conveying line 32 connected to the second main conveying line 22. The first main conveying line 21 and the second main conveying line 22 are located between the first cell fabrication machine 11 and the second cell fabrication machine 12. The first main conveying line 21, the first branch conveying line 31, the second main conveying line 22, and the second branch conveying line 32 each include: an empty tray layer 41, a full tray layer 42, a first buffer layer 43, and a second buffer layer 44 arranged sequentially from bottom to top.

[0055] Specifically, in this embodiment, the first main conveyor line 21 and the second main conveyor line 22 are both arranged adjacent to each other along a first direction, and the first branch conveyor line 31 and the second branch conveyor line 32 are both perpendicular to the first main conveyor line 21 and the second main conveyor line 22, and are arranged on both sides of them. The first direction can be any direction, more specifically, for example, the X direction in Figure 1.

[0056] Specifically, the first conveyor line 31 and the second conveyor line 32 are mainly used to transport the first battery cell and the second battery cell prepared by the first battery cell preparation machine 11 and the second battery cell preparation machine 12 to the first main conveyor line 21 and the second main conveyor line 22.

[0057] More specifically, the first conveyor line 31 and the second conveyor line 32 are similar to the first main conveyor line 21 and the second main conveyor line 22, and also have a certain buffering function.

[0058] In this embodiment, the first cache layer 43 and the second cache layer 44 are used to cache empty trays and full trays, respectively, and the empty trays and full trays are stored on different cache layers.

[0059] Furthermore, as a preferred embodiment, the lithium battery core conveying system further includes: an inter-layer elevator 5, which moves empty or full pallets between empty pallet layer 41, full pallet layer 42, first buffer layer 43 and second buffer layer 44.

[0060] Specifically, the empty pallet layer 41, the full pallet layer 42, the first buffer layer 43, and the second buffer layer 44 are all conveyor lines. Empty pallets are conveyed on the empty pallet layer 41, and full pallets are conveyed on the full pallet layer 42. The first buffer layer 43 and the second buffer layer 44 are used to temporarily accommodate or convey either empty pallets or full pallets. The inter-layer elevator 5 is used to lift the empty pallets in the empty pallet layer 42 to the full pallet layer 42 after the battery cells are loaded, or to lower the full pallets in the full pallet layer 42 to the empty pallet layer 41 after the battery cells are extracted.

[0061] Specifically, the inter-floor elevator 5 also temporarily caches excess empty pallets in the empty pallet layer 41 to the first cache layer 43 and excess full pallets in the full pallet layer 42 to the second cache layer 44 according to instructions.

[0062] Furthermore, as a preferred embodiment, the lithium battery core conveying system also includes a tray positioning mechanism 6 for positioning an empty tray that has been moved to the full tray layer 42 on the first conveyor line 31 and the second conveyor line 32.

[0063] Furthermore, as a preferred embodiment, the lithium battery core conveying system further includes: a feeder 7, used to grab, lift, and move the first or second battery core produced by the first battery core preparation machine 11 or the second battery core preparation machine 12, and place the first or second battery core on the empty tray of the full tray layer 42 that is positioned.

[0064] Specifically, the inter-layer elevator 5 lifts an empty pallet located in the empty pallet layer 41 to the position of the full pallet layer 42 near the unloading machine 7. After the empty pallet is positioned by the pallet positioning mechanism 6, the unloading machine 7 grabs, lifts, moves and places the first or second battery cell prepared by the first battery cell preparation machine 11 or the second battery cell preparation machine 12 onto the positioned empty pallet until the empty pallet is full.

[0065] Specifically, once the empty pallet is filled, it is transported to the first main conveyor line 21 or the second main conveyor line 22 via the first branch conveyor line 31 or the second branch conveyor line 32.

[0066] Furthermore, as a preferred embodiment, the first assembly feeding mechanism A and the second assembly feeding mechanism B are located at the ends of the first main conveyor line 21 and the second main conveyor line 22. Each of the first assembly feeding mechanism A and the second assembly feeding mechanism B is used to receive the first battery cell and the second battery cell and to perform feeding and assembly.

[0067] Specifically, the first assembly feeding mechanism A and the second assembly feeding mechanism B have the same structure, and both are used to assemble the first battery cell and the second battery cell. More specifically, both are used to assemble a first battery cell and a second battery cell into a finished lithium battery core, wherein the first battery cell is obtained from the first main conveyor line 21 and the second battery cell is obtained from the second main conveyor line 22.

[0068] In this embodiment, the first battery cell and the second battery cell are respectively equipped with separate conveyor lines for preparation, positioning, loading and transportation. The two conveyor lines independently transport the first battery cell and the second battery cell to the first assembly feeding mechanism A and the second assembly feeding mechanism B, and cross-distribute them to the first assembly feeding mechanism A and the second assembly feeding mechanism B, so that each of the first assembly feeding mechanism A and the second assembly feeding mechanism B can obtain the first battery cell and the second battery cell as raw materials.

[0069] Furthermore, as a preferred embodiment, each of the first assembly feeding mechanism A and the second assembly feeding mechanism B includes an outer conveyor line 81, which is arranged adjacent to the first main conveyor line 21 or the second main conveyor line 22.

[0070] Furthermore, as a preferred embodiment, each of the first assembly feeding mechanism A and the second assembly feeding mechanism B includes: a first assembly feeding conveyor line 82, which is connected to the first main conveyor line 21 or the second main conveyor line 22.

[0071] Furthermore, as a preferred embodiment, each of the first assembly feeding mechanism A and the second assembly feeding mechanism B includes: a second assembly feeding conveyor line 83, which is connected to the outer conveyor line 81.

[0072] Specifically, the arrangement of the external conveyor line 81 and the second assembly loading conveyor line 83 increases the original two main conveyor lines to four conveyor lines at the end, with two conveyors to the first assembly loading mechanism A and the other two conveyors to the second assembly loading mechanism B.

[0073] Specifically, when the battery cells are transported to the end of the conveyor line, taking the first assembly and loading mechanism A as an example, a full pallet carrying the first battery cells on the first main conveyor line 21 enters the second assembly and loading conveyor line 83 of the first assembly and loading mechanism A via the outer conveyor line 81; simultaneously, a full pallet carrying the second battery cells on the second main conveyor line 22 enters the first assembly and loading conveyor line 82 of the first assembly and loading mechanism A via the first main conveyor line 21. This provides the first and second battery cells to the first assembly and loading mechanism A.

[0074] Similarly, taking the second assembly and loading mechanism B as an example, a full pallet carrying the second battery cell on the second main conveyor line 22 enters the second assembly and loading conveyor line 83 of the second assembly and loading mechanism B via the outer conveyor line 81; simultaneously, a full pallet carrying the first battery cell on the first main conveyor line 21 enters the first assembly and loading conveyor line 82 of the second assembly and loading mechanism B via the second main conveyor line 22. This provides the second battery cell to the second assembly and loading mechanism B.

[0075] Obviously, the first battery cell and the second battery cell will cross and merge at the ends of the first main conveyor line 21 and the second main conveyor line 22. However, since the first battery cell and the second battery cell on the first main conveyor line 21 and the second main conveyor line 22 have been diverted by the two external conveyor lines 81 before crossing and merging, their transportation rhythm can meet the needs of the first assembly feeding mechanism A and the second assembly feeding mechanism B.

[0076] Furthermore, as a preferred embodiment, each of the first assembly loading mechanism A and the second assembly loading mechanism B includes: a first lifting and traversing mechanism 84 for lifting and traversing the pallet between the outer conveyor line 81 and the second assembly loading conveyor line 83.

[0077] Furthermore, as a preferred embodiment, each of the first assembly loading mechanism A and the second assembly loading mechanism B includes a second lifting and traversing mechanism 85 for lifting and traversing the pallet between the first main conveyor line 21 and the first assembly loading conveyor line 82, or between the second main conveyor line 22 and the first assembly loading conveyor line 82.

[0078] Specifically, the first lifting and traversing mechanism 84 and the second lifting and traversing mechanism 85 are used to carry out unidirectional pallet transport between two adjacent conveyor lines, mainly to transport full pallets to adjacent conveyor lines.

[0079] More specifically, at the end of the corresponding conveyor line, there is also a lifting and traversing mechanism for transporting and extracting empty trays containing all the battery cells.

[0080] Furthermore, as a preferred embodiment, it also includes: a first lifting and traversing mechanism group 86, used to lift and traverse the pallet between the first main conveyor line 21 and the outer conveyor line 81 of the first assembly and loading mechanism A.

[0081] Furthermore, as a preferred embodiment, it also includes: a second lifting and traversing mechanism group 87, used to lift and traverse the pallet between the second main conveyor line 22 and the outer conveyor line 81 of the second assembly loading mechanism B.

[0082] Furthermore, as a preferred embodiment, it also includes: a third lifting and traversing mechanism group 88 and a fourth lifting and traversing mechanism group 89, both used to lift and traverse the pallet between the first main conveyor line 21 and the second main conveyor line 22.

[0083] Specifically, each of the first lifting and traversing mechanism group 86, the second lifting and traversing mechanism group 87, the third lifting and traversing mechanism group 88, and the fourth lifting and traversing mechanism group 89 described above has two paired lifting and traversing mechanisms for achieving bidirectional lifting and traversing between two adjacent conveyor lines.

[0084] Furthermore, as a preferred embodiment, a main conveyor line inter-level elevator 9 is provided in the middle of both the first main conveyor line 21 and the second main conveyor line 22. The main conveyor line inter-level elevator 9 has the same structure as the inter-level elevator 5, and is used to move empty or full pallets between the empty pallet layer 41, the full pallet layer 42, the first buffer layer 43, and the second buffer layer 44, so as to reduce or increase the number of pallets working and transporting on the empty pallet layer 41 and the full pallet layer 42.

[0085] Furthermore, as a preferred embodiment, the starting ends of the first main conveyor line 21 and the second main conveyor line 22 are also provided with main conveyor line inter-floor elevators 9.

[0086] Furthermore, as a preferred embodiment, both the first main conveyor line 21 and the second main conveyor line 22 include several conveyor line modules, and each conveyor line module includes an empty pallet layer 41, a full pallet layer 42, a first buffer layer 43, and a second buffer layer 44.

[0087] Furthermore, as a preferred embodiment, each conveyor module operates independently, and each conveyor module has several pallet stations.

[0088] Furthermore, as a preferred embodiment, the first main conveyor line 21 is equipped with multiple first cell fabrication systems. Each first cell fabrication system includes a first cell fabrication machine 11, a first branch conveyor line 31, an inter-layer elevator 5, a pallet positioning mechanism 6, and a discharge machine 7. Referring to Figure 1, in this embodiment, the first main conveyor line 21 is equipped with three first cell fabrication systems.

[0089] Furthermore, as a preferred embodiment, the second main conveyor line 22 is equipped with multiple second cell fabrication systems. Each second cell fabrication system includes a second cell fabrication machine 12, a second branch conveyor line 32, an inter-layer elevator 5, a pallet positioning mechanism 6, and a discharge machine 7. Referring to Figure 1, in this embodiment, the second main conveyor line 22 is equipped with three second cell fabrication systems.

[0090] This embodiment also provides a control method for a lithium battery core conveying system, applicable to lithium battery core conveying systems, the control method including:

[0091] Empty pallets are transported from the empty pallet layer 41 of the first conveyor line 31 or the empty pallet layer 41 of the second conveyor line 32 to the full pallet layer 42 of the first conveyor line 31 or the full pallet layer 42 of the second conveyor line 32 via the inter-level elevator 5.

[0092] Pallet positioning mechanism 6 positions the empty pallet;

[0093] The unloading machine 7 grabs, lifts, moves, and places the first or second battery cell into the empty tray to obtain a full tray;

[0094] Full pallets on the first conveyor line 31 or the second conveyor line 32 are transferred to the first main conveyor line 21 or the second main conveyor line 22;

[0095] The first main conveyor line 21 and the second main conveyor line 22 respectively transfer the full pallet carrying the first battery cell and the full pallet carrying the second battery cell to one of the first assembly loading mechanism A and the second assembly loading mechanism B, and perform loading and assembly.

[0096] This embodiment also provides a control method for a lithium battery core conveying system, applicable to lithium battery core conveying systems, the control method including:

[0097] A first pallet carrying a first battery cell is transported on a first main conveyor line 21, and a second pallet carrying a second battery cell is transported on a second main conveyor line 22.

[0098] One of the first and second pallets enters the second assembly loading conveyor line 83 via the external conveyor line 81;

[0099] The other of the first and second pallets enters the first assembly loading conveyor line 82 via the second main conveyor line 22 or the first main conveyor line 21.

[0100] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A lithium battery core conveying system, characterized in that, include: The first battery cell manufacturing machine and the second battery cell manufacturing machine are used to manufacture the first battery cell and the second battery cell; A first main conveyor line, a first branch conveyor line connected to the first main conveyor line, a second main conveyor line, and a second branch conveyor line connected to the second main conveyor line, wherein the first main conveyor line and the second main conveyor line are located between the first cell fabrication machine and the second cell fabrication machine, and each of the first main conveyor line, the first branch conveyor line, the second main conveyor line, and the second branch conveyor line includes, from bottom to top, an empty tray layer, a full tray layer, a first buffer layer, and a second buffer layer; An inter-floor elevator moves empty or full pallets between the empty pallet floor, the full pallet floor, the first buffer floor, and the second buffer floor. A pallet positioning mechanism for positioning empty pallets moved to the full pallet layer on the first and second conveyor lines; The unloading machine is used to grab, lift, and move the first or second battery cell produced by the first or second battery cell manufacturing machine, and place the first or second battery cell on the empty tray of the full tray layer that is positioned. The first assembly feeding mechanism and the second assembly feeding mechanism are located at the ends of the first main conveyor line and the second main conveyor line, respectively. Each of the first assembly feeding mechanism and the second assembly feeding mechanism is used to receive the first battery cell and the second battery cell and to perform feeding and assembly.

2. The lithium battery core conveying system according to claim 1, characterized in that, Each of the first assembly loading mechanism and the second assembly loading mechanism includes: An external conveyor line is arranged adjacent to either the first main conveyor line or the second main conveyor line. A first assembly feeding conveyor line is connected to either the first main conveyor line or the second main conveyor line. The second assembly feeding conveyor line is connected to the outer conveyor line.

3. The lithium battery core conveying system according to claim 2, characterized in that, Each of the first assembly loading mechanism and the second assembly loading mechanism includes: The first lifting and traversing mechanism is used to lift and traverse the pallet between the outer conveyor line and the second assembly and loading conveyor line; The second lifting and traversing mechanism is used to lift and traverse the pallet between the first main conveyor line and the first assembly loading conveyor line, or between the second main conveyor line and the first assembly loading conveyor line.

4. The lithium battery core conveying system according to claim 3, characterized in that, Also includes: The first lifting and traversing mechanism group is used to lift and traverse the pallet between the first main conveyor line and the outer conveyor line of the first assembly and loading mechanism; The second lifting and traversing mechanism assembly is used to lift and traverse the pallet between the second main conveyor line and the outer conveyor line of the second assembly and loading structure.

5. The lithium battery core conveying system according to claim 4, characterized in that, Also includes: The third and fourth lifting and traversing mechanism groups are both used to lift and traverse the pallet between the first main conveyor line and the second main conveyor line.

6. The lithium battery core conveying system according to claim 1, characterized in that, Both the first and second main conveyor lines are equipped with inter-floor elevators in the middle.

7. The lithium battery core conveying system according to claim 1, characterized in that, Both the first main conveyor line and the second main conveyor line include several conveyor line modules, and each conveyor line module includes the empty pallet layer, the full pallet layer, the first buffer layer and the second buffer layer; Each of the conveyor line modules operates independently, and each of the conveyor line modules has several pallet stations.

8. The lithium battery core conveying system according to claim 1, characterized in that, The first main conveyor line is equipped with multiple first cell manufacturing systems. Each first cell manufacturing system includes a first cell manufacturing machine, a first branch conveyor line, an inter-layer elevator, a tray positioning mechanism, and a feeding machine. The second main conveyor line is equipped with multiple second cell preparation systems. Each second cell preparation system includes a second cell preparation machine, a second branch conveyor line, an inter-layer elevator, a tray positioning mechanism, and a feeding machine.

9. A control method for a lithium battery core conveying system, characterized in that, The control method, applicable to the lithium battery core conveying system according to any one of claims 1 to 8, comprises: Empty pallets are transported from the empty pallet layer of the first conveyor line or the empty pallet layer of the second conveyor line to the full pallet layer of the first conveyor line or the full pallet layer of the second conveyor line via the inter-level elevator; The pallet positioning mechanism positions the empty pallet. The unloading machine grabs, lifts, moves, and places the first or second battery cell into the empty tray to obtain a full tray. A full pallet on the first or second branch conveyor line is transferred to the first or second main conveyor line; The first main conveyor line and the second main conveyor line respectively transfer the full pallet carrying the first battery cell and the full pallet carrying the second battery cell to one of the first assembly loading mechanism and the second assembly loading mechanism, and perform loading and assembly.

10. A control method for a lithium battery core conveying system, characterized in that, The control method applicable to the lithium battery core conveying system of claim 5 includes: A first pallet carrying a first battery cell is transported on the first main conveyor line, and a second pallet carrying a second battery cell is transported on the second main conveyor line; One of the first pallet and the second pallet enters the second assembly loading conveyor line via the outer conveyor line; The first pallet and the other of the second pallet enter the first assembly loading conveyor line via the second main conveyor line or the first main conveyor line.

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