Conveying logistics line and method, and logistics control method for pallets

Abstract

A conveying logistics line and a method, and a logistics control method for pallets, the conveying logistics line comprising an empty pallet conveying line (5), a first full pallet conveying line (3), a second full pallet conveying line (4), a converging conveying line (63), a workpiece pickup station (7), and an electrical control module. The electrical control module is communicatively connected to the empty pallet conveying line (5) and is configured for controlling, according to information on the real-time number of full pallets (9) on the first full pallet conveying line (3) and on the second full pallet conveying line (4), the number of empty pallets (8) to be conveyed by the empty pallet conveying line (5) to each first workpiece manufacturing machine (1) and each second workpiece manufacturing machine (2), so as to achieve a stable conveying state during a set operating time of the conveying logistics line, wherein the stable conveying state comprises the real-time number of full pallets (9) on the first full pallet conveying line (3) and the real-time number of full pallets (9) on the second full pallet conveying line (4) being within a first set range and a second set range, respectively.

Description

Conveyor logistics line and method, pallet logistics control method

[0001] Cross-references to related publications

[0002] This disclosure is based on the Chinese patent application with publication number 202410233414.2, publication date March 1, 2024, and invention name “Conveyance Logistics Line and Method, Pallet Logistics Control Method”, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into the present disclosure as a reference. Technical Field

[0003] The present disclosure relates to the field of battery manufacturing technology, and in particular to a conveying logistics line and method, and a pallet logistics control method. Background Art

[0004] New energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in energy storage fields.

[0005] During the battery production process, the various components that make up the battery, such as bare cells, need to be transported through conveying logistics lines. For battery cells composed of bare cells with various structures, different conveying routes need to be used during production to transport the various bare cells separately. For this reason, it is easy to cause the structure of the conveying logistics line to be complex and occupy a large space. Therefore, how to simplify such conveying logistics lines is one of the topics that the industry needs to study.

[0006] In addition, the bare cell conveying efficiency is an important factor related to the battery production efficiency. Therefore, how to improve the conveying efficiency while simplifying the cell conveying logistics line structure is one of the research topics in the industry.

[0007] Summary of the Invention

[0008] In order to solve the above technical problems, the present disclosure provides a conveying logistics line and method, and a pallet logistics control method with a simplified structure and high conveying efficiency.

[0009] The present disclosure is achieved through the following technical solutions.

[0010] A first aspect of the present disclosure provides a conveying logistics line, comprising:

[0011] An empty pallet conveyor line, wherein a plurality of workpiece manufacturing machines are sequentially distributed along an extension direction of the empty pallet conveyor line, wherein the plurality of workpiece manufacturing machines include at least one first workpiece manufacturing machine and at least one second workpiece manufacturing machine that are alternately distributed, and the empty pallet conveyor line is connected to an input end of each of the workpiece manufacturing machines, and the empty pallet conveyor line is configured to convey an empty pallet without a workpiece to each of the workpiece manufacturing machines;

[0012] a first solid pallet conveying line connected to an output end of each of the first workpiece manufacturing machines, wherein the first solid pallet conveying line is configured to receive and convey a solid pallet carrying a first workpiece from each of the first workpiece manufacturing machines;

[0013] a second solid pallet conveying line connected to an output end of each of the second workpiece manufacturing machines, wherein the second solid pallet conveying line is configured to receive and convey a solid pallet carrying a second workpiece from each of the second workpiece manufacturing machines;

[0014] a merging conveyor line connected to the first solid pallet conveyor line and the second solid pallet conveyor line, the merging conveyor line being configured to receive the solid pallets from the first solid pallet conveyor line and the solid pallets from the second solid pallet conveyor line according to a preset order;

[0015] A workpiece taking station, the input end and the output end of which are respectively connected to the output end of the merging conveyor line and the input end of the empty pallet conveyor line;

[0016] An electrical control module is communicatively connected to the empty pallet conveyor line, and is used to control the number of empty pallets delivered by the empty pallet conveyor line to each of the first workpiece manufacturing machine and each of the second workpiece manufacturing machine according to the real-time quantity information of the real pallets on the first real pallet conveyor line and the second real pallet conveyor line, so as to achieve a stable conveying state within the set working time of the conveying logistics line, and the stable conveying state includes the real-time number of real pallets on the first real pallet conveyor line and the real pallet on the second real pallet conveyor line being within a first set range and a second set range, respectively.

[0017] This conveyor logistics line only has one empty pallet conveyor line for transporting empty pallets, reducing the number of conveyor lines and simplifying the conveyor logistics line structure. This conveyor logistics line is used in the battery cell manufacturing process. The electrical control module controls the number of empty pallets delivered to each workpiece manufacturing machine based on the real-time quantity of the two bare battery cells, thereby affecting the output speed of the two bare battery cells. As time goes by, the real-time quantity difference between the two bare battery cells can be narrowed, thus achieving a stable conveying state, enabling stable and continuous battery cell production, and thus improving battery cell production efficiency.

[0018] In some embodiments, the first real pallet conveyor line is provided with a first pallet quantity detection component, which is used to detect the relationship between the real-time number of the real pallets in the first real pallet conveyor line and the upper limit and lower limit of the first set range; the second real pallet conveyor line is provided with a second pallet quantity detection component, which is used to detect the relationship between the real-time number of the real pallets in the second real pallet conveyor line and the upper limit and lower limit of the second set range; the electrical control module is communicatively connected with the first pallet quantity detection component and the second pallet quantity detection component, and can control the number of empty pallets delivered to each of the first workpiece manufacturing machine and each of the second workpiece manufacturing machine by the empty pallet conveyor line according to the data information detected by the first pallet quantity detection component and the second pallet quantity detection component.

[0019] The first pallet quantity detection component can detect whether the number of real pallets on the first real pallet conveyor line is less than the lower limit value of the first set range, more than the upper limit value of the first set range, or within the first set range. The setting of the second pallet quantity detection component can detect whether the number of real pallets on the second real pallet conveyor line is less than the lower limit value of the second set range, more than the upper limit value of the second set range, or within the second set range, thereby obtaining real-time quantity information of real pallets, providing a basis for the electrical control module to control the empty pallet conveyor line, so that the empty pallet conveyor line allocates an appropriate number of empty pallets to the two workpiece manufacturing machines, thereby adjusting the output speed of the two workpiece manufacturing machines, and after working for a certain period of time, the real-time quantity of the two bare battery cells can reach a basic balance. In this way, the stable and continuous production of battery cells can be carried out, thereby improving the production efficiency of battery cells.

[0020] In some embodiments, the first pallet quantity detection component includes a first short-stack detection sensor and a first full-stack detection sensor, the first short-stack detection sensor and the first full-stack detection sensor being sequentially arranged on a conveying path of the first real pallet conveying line, and the first short-stack detection sensor being triggered when the real-time quantity of the real pallets on the first real pallet conveying line is less than a lower limit value of the first set range, and the first full-stack detection sensor being triggered when the real-time quantity of the real pallets on the first real pallet conveying line is greater than an upper limit value of the first set range;

[0021] The second pallet quantity detection component includes a second short-term material shortage detection sensor and a second full-term material detection sensor. The second short-term material shortage detection sensor and the second full-term material detection sensor are sequentially arranged on the conveying path of the second real pallet conveyor line. When the real-time number of the real pallets on the second real pallet conveyor line is less than the lower limit value of the second set range, the second short-term material shortage detection sensor is triggered. When the real-time number of the real pallets on the second real pallet conveyor line is greater than the upper limit value of the second set range, the second full-term material detection sensor is triggered.

[0022] In this way, the first pallet quantity detection component realizes the detection of the relationship between the real-time quantity of the first workpiece and the upper limit value and the lower limit value of the first setting range, that is, it detects whether the real-time quantity of the first workpiece is within the first setting range, or is less than the lower limit value of the first setting range, or is greater than the upper limit value of the first setting range; the second pallet quantity detection component realizes the detection of the relationship between the real-time quantity of the second workpiece and the upper limit value and the lower limit value of the second setting range, that is, it detects whether the real-time quantity of the second workpiece is within the second setting range, or is less than the lower limit value of the second setting range, or is greater than the upper limit value of the second setting range. The real-time quantity information of the first workpiece and the second workpiece provides a basis for the electrical control module to control the empty pallet conveyor line, so that the empty pallet conveyor line allocates an appropriate number of empty pallets to the two workpiece manufacturing machines, thereby adjusting the output speed of the two workpiece manufacturing machines. After working for a certain period of time, the real-time quantity of the two bare battery cells can reach a basic balance. In this way, the stable and continuous production of battery cells can be carried out, thereby improving the production efficiency of battery cells.

[0023] In some embodiments, the electrical control module has a first control mode, a second control mode, and a third control mode.

[0024] When the real-time number of real pallets on the first real pallet conveying line and the real-time number of real pallets on the second real pallet conveying line are respectively within the first setting range and the second setting range, or are respectively less than the lower limit value of the first setting range and the lower limit value of the second setting range, or are respectively greater than the upper limit value of the first setting range and the upper limit value of the second setting range, the electrical control module adopts the first control mode, and the first control mode is also used as the initial default mode;

[0025] When the real-time number of the real pallets on the first real pallet conveyor line is less than the lower limit of the first set range, and the real-time number of the real pallets on the second real pallet conveyor line is greater than the upper limit of the second set range, the electrical control module adopts the second control mode;

[0026] When the real-time number of real pallets on the first real pallet conveyor line is greater than the upper limit value of the first setting range, and the real-time number of real pallets on the second real pallet conveyor line is less than the lower limit value of the second setting range, the electrical control module adopts the third control mode.

[0027] The above three control modes are switched according to the real-time quantity information of the actual pallets, so that the conveying logistics line in an unbalanced state can reach a stable conveying state within the set time, thereby ensuring the stable and continuous production of battery cells and improving the production efficiency of battery cells.

[0028] In some embodiments, in the first control mode, the electrical control module controls the empty pallet conveyor line to sequentially input a set number of empty pallets from the first to the last workpiece manufacturing machine. After all workpiece manufacturing machines have met the set number of empty pallets, an empty pallet is added in sequence from the first to the last workpiece manufacturing machine until the number of empty pallets cached by each workpiece manufacturing machine reaches the maximum allowable cache capacity.

[0029] In the second control mode, the electrical control module controls the empty pallet conveyor line to give priority to inputting empty pallets to the first workpiece manufacturing machine, maintains the number of empty pallets cached by each first workpiece manufacturing machine to reach the maximum allowable cache capacity, and conveys at least the set number of empty pallets to the second workpiece manufacturing machine and temporarily stores these empty pallets outside the entrance of the second workpiece manufacturing machine.

[0030] The empty pallet temporarily stored outside the entrance of the second workpiece manufacturing machine is used to be input into the second workpiece manufacturing machine when the conveying logistics line is switched from the second control mode to the first control mode;

[0031] In the third control mode, the electrical control module controls the empty pallet conveyor line to give priority to inputting empty pallets to the second workpiece manufacturing machine, maintains the number of empty pallets cached by each second workpiece manufacturing machine to reach the maximum allowable cache capacity, and conveys at least the set number of empty pallets to the first workpiece manufacturing machine and temporarily stores these empty pallets outside the entrance of the first workpiece manufacturing machine.

[0032] The empty pallet temporarily stored outside the entrance of the first workpiece manufacturing machine is used to be input into the first workpiece manufacturing machine when the conveying logistics line is switched from the third control mode to the first control mode.

[0033] The above are the specific operating methods of the three control modes, which can ensure that the real-time number of real pallets in the first real pallet conveyor line and the second real pallet conveyor line are within the first set range and the second set range respectively within the set working time of the conveyor logistics line.

[0034] In some embodiments, the set number includes 3.

[0035] The purpose of temporarily storing the empty pallets outside the entrance of the workpiece manufacturing machine is to input these empty pallets into the workpiece manufacturing machine in time after switching the control mode, so that the workpiece manufacturing machine can operate in time. Temporarily storing 3 empty pallets outside the entrance of the workpiece manufacturing machine can not only meet the workpiece manufacturing machine's demand for empty pallets in a short period of time, but also leave enough empty pallets for other workpiece manufacturing machines, so that the empty pallets can be sufficiently circulated, thereby ensuring the normal operation of the conveying logistics line.

[0036] In some embodiments, the conveying path of the first solid pallet conveyor line, the conveying path of the second solid pallet conveyor line and the conveying path of the empty pallet conveyor line are distributed in sequence from top to bottom, and the workpiece manufacturing machine is arranged on the same side of the first solid pallet conveyor line, the second solid pallet conveyor line and the empty pallet conveyor line.

[0037] With such distribution, the first full pallet conveyor line, the second full pallet conveyor line and the empty pallet conveyor line occupy less space. Moreover, the first full pallet conveyor line, the second full pallet conveyor line and the empty pallet conveyor line are all relatively close to the workpiece manufacturing machine, which reduces the space occupied by the conveying logistics lines.

[0038] In some embodiments, the conveying path of the second solid pallet conveyor line, the conveying path of the merging conveyor line and the conveying path of the workpiece retrieval station are at the same height; the conveying logistics line also includes a first lifting mechanism, a third solid pallet conveyor line and a second lifting mechanism, the conveying path of the third solid pallet conveyor line and the conveying path of the second solid pallet conveyor line are at the same height, the top input end and the bottom output end of the first lifting mechanism are respectively connected to the output end of the first solid pallet conveyor line and the input end of the third solid pallet conveyor line, the output end of the third solid pallet conveyor line is connected to the input end of the merging conveyor line, and the top input end and the bottom output end of the second lifting mechanism are respectively connected to the output end of the workpiece retrieval station and the input end of the empty pallet conveyor line.

[0039] In this way, the circular conveying of the pallet is completed, thereby realizing the transportation of the workpiece. The conveying logistics line has a simple structure, a reasonable layout, and occupies a small space.

[0040] In some embodiments, the workpiece comprises a bare battery cell.

[0041] The conveying logistics line is applied to the solution of conveying bare battery cells, realizing the conveyance of bare battery cells and being able to maintain the stable and continuous production of battery cells, thereby improving the production efficiency of battery cells.

[0042] A second aspect of the present disclosure provides a pallet logistics control method, which is applied to a conveyor logistics line, the conveyor logistics line comprising:

[0043] An empty pallet conveyor line, wherein a plurality of workpiece manufacturing machines are sequentially distributed along an extension direction of the empty pallet conveyor line, wherein the plurality of workpiece manufacturing machines include at least one first workpiece manufacturing machine and at least one second workpiece manufacturing machine that are alternately distributed, and the empty pallet conveyor line is connected to an input end of each of the workpiece manufacturing machines, and the empty pallet conveyor line is configured to convey an empty pallet without a workpiece to each of the workpiece manufacturing machines;

[0044] a first solid pallet conveying line connected to an output end of each of the first workpiece manufacturing machines, wherein the first solid pallet conveying line is configured to receive and convey a solid pallet carrying a first workpiece from each of the first workpiece manufacturing machines;

[0045] a second solid pallet conveying line connected to an output end of each of the second workpiece manufacturing machines, wherein the second solid pallet conveying line is configured to receive and convey a solid pallet carrying a second workpiece from each of the second workpiece manufacturing machines;

[0046] a merging conveyor line connected to the first solid pallet conveyor line and the second solid pallet conveyor line, wherein the merging conveyor line receives the solid pallets from the first solid pallet conveyor line and the second solid pallet conveyor line according to a preset order;

[0047] A workpiece taking station, the input end and the output end of which are respectively connected to the output end of the merging conveyor line and the input end of the empty pallet conveyor line;

[0048] an electrical control module, communicatively connected to the empty pallet conveyor line, the electrical control module using the control method to control the empty pallet conveyor line so as to achieve a stable conveying state within a set operating time of the conveying logistics line, wherein the stable conveying state includes the real-time number of real pallets on the first and second real pallet conveyor lines being within a first set range and a second set range, respectively;

[0049] The control method includes:

[0050] A real-time quantity information acquisition step, wherein the electrical control module acquires real-time quantity information of the real pallets on the first real pallet conveying line and the real pallets on the second real pallet conveying line;

[0051] In the empty pallet allocation step, the electrical control module controls the number of empty pallets delivered by the empty pallet conveyor line to each of the first workpiece manufacturing machine and each of the second workpiece manufacturing machine according to the real-time quantity information.

[0052] During this conveying process, the electrical control module controls the number of empty pallets delivered to each workpiece manufacturing machine based on the real-time count of the two types of bare cells, thereby affecting the output rate of the two types of bare cells. As a result, over time, the real-time count gap between the two types of bare cells narrows, achieving a stable conveying state. This enables stable and continuous battery cell production, thereby improving battery cell production efficiency.

[0053] In some embodiments, the electrical control module has a first control mode, a second control mode, and a third control mode, the first control mode being an initial default mode, and the empty tray allocation step includes:

[0054] When the real-time number of real pallets on the first real pallet conveying line and the real-time number of real pallets on the second real pallet conveying line are respectively within the first setting range and the second setting range, or are respectively less than the lower limit value of the first setting range and the lower limit value of the second setting range, or are respectively greater than the upper limit value of the first setting range and the upper limit value of the second setting range, the electrical control module adopts the first control mode;

[0055] When the real-time number of the real pallets on the first real pallet conveyor line is less than the lower limit of the first set range, and the real-time number of the real pallets on the second real pallet conveyor line is greater than the upper limit of the second set range, the electrical control module adopts the second control mode;

[0056] When the real-time number of real pallets on the first real pallet conveyor line is greater than the upper limit value of the first setting range, and the real-time number of real pallets on the second real pallet conveyor line is less than the lower limit value of the second setting range, the electrical control module adopts the third control mode.

[0057] The above three control modes are switched according to the real-time number of actual pallets, so that the conveying logistics line in an unbalanced state can reach a stable conveying state within the set time, thereby ensuring the stable and continuous production of battery cells and improving the production efficiency of battery cells.

[0058] In some embodiments, in the first control mode, the electrical control module controls the empty pallet conveyor line to sequentially convey a set number of empty pallets from each of the first to the last workpiece manufacturing machines. After all workpiece manufacturing machines have met the set number of empty pallets, an empty pallet is added in sequence from the first to the last workpiece manufacturing machine until the number of empty pallets cached by each workpiece manufacturing machine reaches the maximum allowable cache capacity.

[0059] In the second control mode, the electrical control module controls the empty pallet conveyor line to preferentially input empty pallets to the first workpiece manufacturing machine, maintains the number of empty pallets buffered by each first workpiece manufacturing machine at a maximum allowable buffer capacity, and conveys at least the set number of empty pallets to the second workpiece manufacturing machine and temporarily stores these empty pallets outside the entrance of the second workpiece manufacturing machine;

[0060] In the third control mode, the electrical control module controls the empty pallet conveyor line to preferentially input empty pallets to the second workpiece manufacturing machine, maintains the number of empty pallets buffered by each second workpiece manufacturing machine at a maximum allowable buffer capacity, and conveys at least the set number of empty pallets to the first workpiece manufacturing machine and temporarily stores these empty pallets outside the entrance of the first workpiece manufacturing machine;

[0061] The set quantity includes 3.

[0062] The above are specific operating methods of the three control modes, which can ensure that the real-time number of real pallets in the first real pallet conveyor line and the second real pallet conveyor line are within the first set range and the second set range respectively within the set working time of the conveyor logistics line.

[0063] A third aspect of the present disclosure provides a method for conveying logistics, using a conveying logistics line, the conveying logistics line comprising:

[0064] An empty pallet conveyor line, wherein a plurality of workpiece manufacturing machines are sequentially distributed along an extension direction of the empty pallet conveyor line, wherein the plurality of workpiece manufacturing machines include at least one first workpiece manufacturing machine and at least one second workpiece manufacturing machine that are alternately distributed;

[0065] a first solid pallet conveying line connected to an output end of each of the first workpiece manufacturing machines, wherein the first solid pallet conveying line is configured to receive and convey a solid pallet carrying a first workpiece from each of the first workpiece manufacturing machines;

[0066] a second solid pallet conveying line connected to an output end of each of the second workpiece manufacturing machines, wherein the second solid pallet conveying line is configured to receive and convey a solid pallet carrying a second workpiece from each of the second workpiece manufacturing machines;

[0067] a merging conveyor line connected to the first solid pallet conveyor line and the second solid pallet conveyor line;

[0068] A workpiece taking station, whose input and output ends are connected to the output end of the merging conveyor line and the input end of the empty pallet conveyor line;

[0069] An electrical control module, communicatively connected to the empty pallet conveyor line;

[0070] The logistics delivery method comprises:

[0071] an electrical control step, wherein the electrical control module obtains real-time quantity information of the real pallets on the first real pallet conveyor line and the second real pallet conveyor line, and controls the quantity of empty pallets conveyed by the empty pallet conveyor line to each of the first workpiece manufacturing machine and each of the second workpiece manufacturing machine according to the real-time quantity information;

[0072] a workpiece receiving step, wherein the workpiece manufacturing machine inputs an empty pallet into a material receiving position, places the formed workpiece into the empty pallet, and then outputs the solid pallet carrying the workpiece to the first solid pallet conveyor line and the second solid pallet conveyor line, wherein the first workpiece manufacturing machine and the second workpiece manufacturing machine output the solid pallet to the first solid pallet conveyor line and the second solid pallet conveyor line respectively;

[0073] a merging step, wherein the merging conveyor line receives the real pallets from the first real pallet conveyor line and the second real pallet conveyor line according to a preset order;

[0074] a workpiece taking step, wherein the workpiece taking station receives the full pallet from the merging conveyor line, the workpieces in the full pallet are taken away, and an empty pallet remains at the output end of the workpiece taking station, and the empty pallet is conveyed to the empty pallet conveyor line by the workpiece taking station;

[0075] The conveying logistics line can reach a stable conveying state within the working set time using the conveying logistics method, and the stable conveying state includes the real-time number of real pallets on the first real pallet conveying line and the second real pallet conveying line being within the first set range and the second set range respectively.

[0076] During this conveying process, the electrical control module controls the number of empty pallets delivered to each workpiece manufacturing machine based on the real-time count of the two types of bare cells, thereby affecting the output rate of the two types of bare cells. As a result, over time, the real-time count gap between the two types of bare cells narrows, achieving a stable conveying state. This enables stable and continuous battery cell production, thereby improving battery cell production efficiency.

[0077] In some embodiments, the electrical controlling step includes:

[0078] In an initial allocation step, the electrical control module uses an initial default mode to control the empty pallet conveying line to convey an empty pallet without a workpiece to each of the workpiece manufacturing machines;

[0079] A real-time quantity information acquisition step, wherein the electrical control module acquires real-time quantity information of the real pallets on the first real pallet conveying line and the real pallets on the second real pallet conveying line;

[0080] In the empty pallet allocation step, the electrical control module controls the number of empty pallets delivered by the empty pallet conveyor line to each of the first workpiece manufacturing machine and each of the second workpiece manufacturing machine according to the real-time quantity information.

[0081] In this way, the real-time quantity information of the first workpiece and the second workpiece can be obtained through the above steps, providing a basis for the electrical control module to control the empty pallet conveyor line, so that the empty pallet conveyor line can allocate an appropriate number of empty pallets to the two workpiece manufacturing machines, thereby adjusting the output speed of the two workpiece manufacturing machines. After working for a certain period of time, the real-time quantity of the two bare battery cells can reach a basic balance. In this way, the production of battery cells can be carried out stably and continuously, thereby improving the production efficiency of battery cells.

[0082] In some embodiments, the electrical control module has a first control mode, a second control mode, and a third control mode, the first control mode being the initial default mode, and the empty tray allocation step includes:

[0083] When the real-time number of real pallets on the first real pallet conveying line and the real-time number of real pallets on the second real pallet conveying line are respectively within the first setting range and the second setting range, or are respectively less than the lower limit value of the first setting range and the lower limit value of the second setting range, or are respectively greater than the upper limit value of the first setting range and the upper limit value of the second setting range, the electrical control module adopts the first control mode;

[0084] When the real-time number of the real pallets on the first real pallet conveyor line is less than the lower limit of the first set range, and the real-time number of the real pallets on the second real pallet conveyor line is greater than the upper limit of the second set range, the electrical control module adopts the second control mode;

[0085] When the real-time number of real pallets on the first real pallet conveyor line is greater than the upper limit value of the first setting range, and the real-time number of real pallets on the second real pallet conveyor line is less than the lower limit value of the second setting range, the electrical control module adopts the third control mode.

[0086] The above three control modes are switched according to the real-time quantity information of the actual pallets, so that the conveying logistics line in an unbalanced state can reach a stable conveying state within the set time, thereby ensuring the stable and continuous production of battery cells and improving the production efficiency of battery cells.

[0087] In some embodiments, in the first control mode, the electrical control module controls the empty pallet conveyor line to sequentially convey a set number of empty pallets from each of the first to the last workpiece manufacturing machines. After all workpiece manufacturing machines have met the set number of empty pallets, an empty pallet is added in sequence from the first to the last workpiece manufacturing machine until the number of empty pallets cached by each workpiece manufacturing machine reaches the maximum allowable cache capacity.

[0088] In the second control mode, the electrical control module controls the empty pallet conveyor line to preferentially input empty pallets to the first workpiece manufacturing machine, maintains the number of empty pallets buffered by each first workpiece manufacturing machine at a maximum allowable buffer capacity, and conveys at least the set number of empty pallets to the second workpiece manufacturing machine and temporarily stores these empty pallets outside the entrance of the second workpiece manufacturing machine;

[0089] In the third control mode, the electrical control module controls the empty pallet conveyor line to preferentially input empty pallets to the second workpiece manufacturing machine, maintains the number of empty pallets buffered by each second workpiece manufacturing machine at a maximum allowable buffer capacity, and conveys at least the set number of empty pallets to the first workpiece manufacturing machine and temporarily stores these empty pallets outside the entrance of the first workpiece manufacturing machine;

[0090] The set quantity includes 3.

[0091] The above are the specific operating methods of the three control modes, which can ensure that the real-time number of real pallets in the first real pallet conveyor line and the second real pallet conveyor line are within the first set range and the second set range respectively within the set working time of the conveyor logistics line.

[0092] Effects of the Invention

[0093] The present disclosure provides a conveying logistics line and method with simplified structure and high conveying efficiency, and a pallet logistics control method. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0095] FIG1 is a front view of a conveying logistics line provided by some embodiments of the present disclosure;

[0096] FIG2 is a top view of a delivery flow line provided by some embodiments of the present disclosure;

[0097] FIG3 is a side view of a conveying flow line at a first workpiece manufacturing machine according to some embodiments of the present disclosure;

[0098] FIG4 is a side view of a conveying flow line at a second workpiece manufacturing machine according to some embodiments of the present disclosure;

[0099] FIG5 is a top view of a conveying flow line according to some embodiments of the present disclosure divided into three layers according to position height;

[0100] FIG6 is a top view of an empty pallet conveyor line of a conveyor logistics line provided by some embodiments of the present disclosure in three control modes;

[0101] FIG7 is a schematic flow chart of a pallet logistics control method provided by some embodiments of the present disclosure;

[0102] FIG8 is a flow chart of a pallet logistics control method provided by other embodiments of the present disclosure;

[0103] FIG9 is a schematic flow diagram of a logistics transport method provided by some embodiments of the present disclosure;

[0104] FIG10 is a schematic flow chart of a logistics transport method provided by other embodiments of the present disclosure;

[0105] FIG11 is a schematic flow chart of a logistics transport method provided in some further embodiments of the present disclosure.

[0106] Explanation of the accompanying drawings: 1 first workpiece manufacturing machine; 2 second workpiece manufacturing machine; 3 first full pallet conveyor line; 4 second full pallet conveyor line; 5 empty pallet conveyor line; 61 first lifting mechanism; 62 full pallet conveyor line; 63 merging conveyor line; 64 second lifting mechanism; 7 workpiece taking station; 8 empty pallet; 9 full pallet; 11 first material shortage detection sensor; 12 first full material detection sensor; 13 second material shortage detection sensor; 14 second full material detection sensor. DETAILED DESCRIPTION

[0107] The following embodiments of the technical solution of the present disclosure are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present disclosure and are therefore only examples and are not intended to limit the scope of protection of the present disclosure.

[0108] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which the present disclosure belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure; the terms "including" and "having" and any variations thereof in the specification of the present disclosure and the above-mentioned drawings are intended to cover non-exclusive inclusions.

[0109] In the description of the embodiments of the present disclosure, technical terms such as "first," "second," and "third" are used solely to distinguish different objects and should not be understood to indicate or imply relative importance or to implicitly specify the quantity, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present disclosure, "plurality" means more than two, unless otherwise specifically defined.

[0110] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0111] In the description of the embodiments of the present disclosure, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0112] In the description of the embodiments of the present disclosure, the orientations or positional relationships indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present disclosure.

[0113] In the description of the embodiments of the present disclosure, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal connectivity between two components or interaction between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure based on specific circumstances.

[0114] In the description of the embodiments of the present disclosure, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and can be direct contact, contact through an intermediate medium layer, contact with essentially no interaction force between the two contacting parties, or contact with interaction force between the two contacting parties.

[0115] Hereinafter, the present disclosure will be described in detail.

[0116] Currently, new energy batteries are increasingly being used in everyday life and industry. They are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric cars, as well as in a variety of fields such as aerospace. As the application of power batteries continues to expand, market demand is also growing.

[0117] During the battery production process, the various components that make up the battery, such as bare cells, need to be transported through conveyor logistics lines. In the production of battery cells, there are situations where, for example, bare cells of multiple different structures (for example, different winding methods) are paired into shells. For battery cells composed of bare cells of multiple different structures, multiple parallel conveying routes are usually used to transport the multiple bare cells separately during production. Bare cells with different structures may have inconsistent winding methods of the bare cells. Here, the scenario of pairing two bare cells with different winding methods into a shell is used as an example to illustrate. The two bare cells with inconsistent winding methods can be called type A bare cells and type B bare cells. During production, they need to be paired one by one to form forms such as ABAB, ABBA, etc., and then assembled as a whole into a shell to form a battery cell.

[0118] In the prior art, the conveyor lines for these bare battery cells are equipped with an input line for each winding machine for each bare battery cell, which feeds empty trays into the winding machine and an output line for receiving and transporting full trays containing bare batteries from the winding machine. This configuration makes the entire cell conveyor line structure cumbersome and complex, resulting in high equipment costs and a large space occupation.

[0119] In view of the above-mentioned related art, it is considered to merge the input lines of the empty pallets configured for multiple winding machines into one, that is, each winding machine shares one input line, reducing the number of input lines and thus simplifying the structure. However, since the winding machines used to wind different bare cells cannot continuously discharge materials due to the need to switch materials, there is a situation where the discontinuous discharge of each winding machine is mismatched. Sharing one input line can easily lead to an unreasonable number of empty pallets allocated to various winding machines. For example, the winding speed of type A winding machine remains unchanged, while the speed of type B winding machine outputting type B bare cells decreases in the state of waiting for material switching, resulting in a relatively small number of type B bare cells and a relatively large number of type A bare cells. If the empty pallets are allocated to winding machine A and winding machine B according to the previous ratio, it is easy to output relatively more type A bare cells and relatively fewer type B bare cells, which can easily cause the loss of type B bare cells and make the integration of type A bare cells and type B bare cells unable to continue, thereby affecting the production efficiency of battery cells.

[0120] To this end, the inventors of the present disclosure have discovered through research that the number of empty pallets allocated to Type A winding machines and Type B winding machines can be adjusted according to the real-time number of Type A bare cells and Type B bare cells, so that the bare cells with a larger real-time number can be produced at a slower speed, while the bare cells with a smaller real-time number can be produced at a relatively faster speed. After working in this mode for a certain period of time, the real-time numbers of the two types of bare cells can reach a basic balance. In this way, the stable and continuous production of bare cells can be ensured, thereby improving the production efficiency of bare cells.

[0121] Based on such a design concept, the inventor of the present invention designed a conveying logistics line, which includes an empty pallet conveying line, a first full pallet conveying line, a second full pallet conveying line, a merging conveying line, a workpiece picking station and an electrical control module. A plurality of workpiece manufacturing machines are distributed in sequence along the extension direction of the empty pallet conveying line. The plurality of workpiece manufacturing machines include at least one first workpiece manufacturing machine and at least one second workpiece manufacturing machine that are alternately distributed. The first workpiece manufacturing machine and the second workpiece manufacturing machine are used to respectively manufacture the first type of bare battery cells (also called type A bare battery cells) and the second type of bare battery cells (also called type B bare battery cells). The empty pallet conveying line is connected to the input end of each workpiece manufacturing machine, and the empty pallet conveying line is configured to transport an empty pallet that does not carry a workpiece to each workpiece manufacturing machine; the first full pallet conveying line is connected to the output end of each first workpiece manufacturing machine, and the first full pallet conveying line is configured to receive and transport a full pallet carrying a first workpiece from each first workpiece manufacturing machine; the second full pallet conveying line is connected to the output end of each second workpiece manufacturing machine The output end is connected to the second real pallet conveyor line, the second real pallet conveyor line is configured to receive and convey the real pallet carrying the second workpiece from each second workpiece manufacturing machine; the merging conveyor line is connected to the first real pallet conveyor line and the second real pallet conveyor line, and the merging conveyor line is configured to receive the real pallets from the first real pallet conveyor line and the real pallets of the second real pallet conveyor line according to a preset order; the input end and the output end of the workpiece taking station are respectively connected to the output end of the merging conveyor line and the input end of the empty pallet conveyor line; the electrical control module is communicatively connected to the empty pallet conveyor line, and is used to control the number of empty pallets delivered to each first workpiece manufacturing machine and each second workpiece manufacturing machine by the empty pallet conveyor line according to the real-time number information of the real pallets on the first real pallet conveyor line and the second real pallet conveyor line, so as to achieve a stable conveying state within the set working time of the conveying logistics line, and the stable conveying state includes that the real-time number of real pallets on the first real pallet conveyor line and the real pallet on the second real pallet conveyor line are respectively within the first set range and the second set range.

[0122] When this conveying logistics line is used to convey bare cells during the production process of battery cells, the first workpiece manufacturing machine is used to wind type A bare cells, and the second workpiece manufacturing machine is used to wind type B bare cells. The electrical control module adjusts the number of empty pallets allocated to winding machine A and winding machine B according to the real-time number of type A bare cells and type B bare cells, so that the bare cells with a larger real-time number are produced at a slower speed, while the bare cells with a smaller real-time number are produced at a relatively faster speed. After working in this mode for a certain period of time, the real-time numbers of the two bare cells can reach a basic balance. In this way, the stable and continuous production of battery cells can be carried out, thereby improving the production efficiency of battery cells.

[0123] The conveying logistics line of the embodiment of the present disclosure can be used in the battery production process, for example, for conveying bare battery cells. Of course, those skilled in the art will understand that the conveying logistics line provided by the embodiment of the present disclosure is not only used for conveying bare battery cells in the battery production process, but can also be used for conveying other workpieces that need to be conveyed.

[0124] In the embodiment of the present disclosure, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0125] The battery cells may be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., which are not limited in the embodiments of the present disclosure.

[0126] Although not shown, a battery cell generally includes an electrode assembly (e.g., a bare cell). The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (e.g., lithium ions) are inserted and removed between the positive and negative electrodes. The separator is placed between the positive and negative electrodes to prevent short circuits between the positive and negative electrodes while allowing active ions to pass through.

[0127] In some embodiments, the electrode assembly is provided with tabs (not shown) that can conduct current from the electrode assembly. The tabs include a positive tab and a negative tab.

[0128] In some embodiments, a battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing may be a steel housing, an aluminum housing, a plastic housing (e.g., polypropylene), a composite metal housing (e.g., a copper-aluminum composite housing), or an aluminum-plastic film.

[0129] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square-shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no special limitation in the present disclosure.

[0130] In some embodiments, the housing includes a shell and an end cap. The shell has an opening, and the end cap seals the opening to form a sealed space for accommodating the electrode assembly, electrolyte, and other substances. The shell may have one or more openings. One or more end caps may also be provided.

[0131] In some embodiments, the housing is provided with at least one electrode terminal, which is electrically connected to the tab. The electrode terminal may be directly connected to the tab or indirectly connected to the tab via an adapter component. The electrode terminal may be provided on the end cap or on the housing.

[0132] Hereinafter, some embodiments of the present disclosure will be described in detail with reference to FIG. 1 to FIG. 6 .

[0133] Figure 1 is a main view of the conveying flow line provided by some embodiments of the present disclosure; Figure 2 is a top view of the conveying flow line provided by some embodiments of the present disclosure; Figure 3 is a side schematic diagram of the conveying flow line provided by some embodiments of the present disclosure at the first workpiece manufacturing machine; Figure 4 is a side schematic diagram of the conveying flow line provided by some embodiments of the present disclosure at the second workpiece manufacturing machine; Figure 5 is a top view of the conveying flow line provided by some embodiments of the present disclosure after being divided into three-layer structures according to position height; Figure 6 is a top view of the empty pallet conveying line of the conveying flow line provided by some embodiments of the present disclosure in three control modes respectively.

[0134] As shown in Figures 1 to 4, the embodiment of the present disclosure provides a conveying logistics line, including an empty pallet conveyor line 5, a first full pallet conveyor line 3, a second full pallet conveyor line 4, a merging conveyor line 63, a workpiece picking station 7 and an electrical control module. A plurality of workpiece manufacturing machines are distributed in sequence along the extension direction of the empty pallet conveyor line 5. The plurality of workpiece manufacturing machines include at least one first workpiece manufacturing machine 1 and at least one second workpiece manufacturing machine 2 that are alternately distributed. The empty pallet conveyor line 5 is connected to the input end of each workpiece manufacturing machine, and the empty pallet conveyor line 5 is configured to be able to convey an empty pallet 8 that does not carry a workpiece to each workpiece manufacturing machine; the first full pallet conveyor line 3 is connected to the output end of each first workpiece manufacturing machine 1, and the first full pallet conveyor line 3 is configured to be able to receive and convey a full pallet 9 carrying a first workpiece from each first workpiece manufacturing machine 1; the second full pallet conveyor line 4 is connected to the output end of each second workpiece manufacturing machine 2, and the second full pallet conveyor line 4 is configured to receive and convey The real pallet 9 carrying the second workpiece is transported; the merging conveyor line 63 is connected to the first real pallet conveyor line 3 and the second real pallet conveyor line 4, and the merging conveyor line 63 receives the real pallet 9 from the first real pallet conveyor line 3 and the real pallet 9 from the second real pallet conveyor line 4 according to a preset order; the input end and the output end of the workpiece taking station 7 are respectively connected to the output end of the merging conveyor line 63 and the input end of the empty pallet conveyor line 5; the electrical control module is communicatively connected to the empty pallet conveyor line 5, and is used to control the number of empty pallets 8 delivered by the empty pallet conveyor line 5 to each first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2 according to the real-time quantity information of the real pallets 9 on the first real pallet conveyor line 3 and the second real pallet conveyor line 4, so as to achieve a stable conveying state within the set working time of the conveying logistics line, and the stable conveying state includes the real-time quantity of the real pallets 9 on the first real pallet conveyor line 3 and the real pallet 9 on the second real pallet conveyor line 4 being within the first set range and the second set range, respectively.

[0135] When the conveying logistics line is used to manufacture battery cells, the first workpiece manufacturing machine 1 is used to wind type A bare cells, and the second workpiece manufacturing machine 2 is used to wind type B bare cells. The empty pallet conveyor line 5 conveys empty pallets 8 to each first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2. The empty pallet 8 sent to the first workpiece manufacturing machine 1 receives the type A bare cells wound by the first workpiece manufacturing machine 1 and is then sent to the first full pallet conveyor line 3. The empty pallet 8 sent to the second workpiece manufacturing machine 2 receives the type B bare cells wound by the second workpiece manufacturing machine 2 and is then sent to the second full pallet conveyor line. 4. The solid pallets 9 on the first solid pallet conveyor line 3 and the solid pallets 9 on the second solid pallet conveyor line 4 are conveyed to the merging conveyor line 63 one by one in a preset order, so that the type A bare cells and type B bare cells on the merging conveyor line 63 are arranged in the order of the bare cells in the battery cell. The arranged bare cells are taken away in turn and moved to the pairing and integration device for pairing and integration. After the bare cells on the merging conveyor line 63 are taken away, empty pallets 8 are left. The empty pallets 8 flow back from the merging conveyor line 63 to the empty pallet conveyor line 5, and this cycle is repeated to realize the conveyance of the bare cells.

[0136] Exemplarily, during the conveying process, if the number of real pallets 9 on the first real pallet conveyor line 3 and the second real pallet conveyor line 4 is relatively balanced, the electrical control module controls the empty pallet conveyor line 5 to convey empty pallets 8 to the first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2 in a relatively balanced proportion; if one or more of a certain type of workpiece manufacturing machine reduces the output speed of the bare battery cell when in the waiting-for-material switching state, the number of real pallets 9 on the first real pallet conveyor line 3 and the second real pallet conveyor line 4 will be quite different, that is, the number of bare battery cells on one real pallet conveyor line is large, and the number of bare battery cells on the other real pallet conveyor line is small. At this time, the electrical control module increases the number of empty pallets 8 allocated to the workpiece manufacturing machine corresponding to the smaller number of bare battery cells, and reduces the number of empty pallets 8 allocated to the workpiece manufacturing machine corresponding to the larger number of bare battery cells, so that the smaller number of bare battery cells are produced at a normal speed, while the larger number of bare battery cells are produced at a speed slower than the normal speed. After working in this mode for a certain period of time, the real-time quantity of the two types of bare battery cells can reach a basic balance. In this way, the stable and continuous production of battery cells can be carried out, thereby improving the production efficiency of battery cells.

[0137] The embodiments of the present disclosure do not particularly limit the structures of the components such as the workpiece manufacturing machine, the conveyor line, and the pallet, as long as they can achieve their respective basic functions. For example, known technologies can be used.

[0138] The electrical control module can be realized through electrical control hardware circuits, in-position sensors, PLC programs, etc.

[0139] The conveying logistics line can only have one empty pallet conveying line 5 for conveying empty pallets, reducing the number of conveying lines and simplifying the structure of the conveying logistics line. During the above-mentioned conveying process, the electrical control module controls the number of empty pallets 8 delivered to each workpiece manufacturing machine based on the real-time quantity of the two bare battery cells, thereby affecting the output speed of the two bare battery cells. Therefore, over time, the real-time quantity difference between the two bare battery cells can be narrowed, thereby achieving a stable conveying state. This can ensure the stable and continuous production of battery cells, thereby improving the production efficiency of battery cells.

[0140] In some embodiments of the present disclosure, as shown in Figure 5, the first real pallet conveyor line 3 is provided with a first pallet quantity detection component, and the first pallet quantity detection component is used to detect the relationship between the real-time number of real pallets 9 in the first real pallet conveyor line 3 and the upper limit value and the lower limit value of the first set range; the second real pallet conveyor line 4 is provided with a second pallet quantity detection component, and the second pallet quantity detection component is used to detect the relationship between the real-time number of real pallets 9 in the second real pallet conveyor line 4 and the upper limit value and the lower limit value of the second set range; the electrical control module is communicatively connected with the first pallet quantity detection component and the second pallet quantity detection component, and can control the number of empty pallets 8 delivered by the empty pallet conveyor line 5 to each first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2 according to the data information detected by the first pallet quantity detection component and the second pallet quantity detection component.

[0141] The first pallet quantity detection component can detect whether the number of bare battery cells on the first real pallet conveyor line is less than the lower limit value of the first set range, more than the upper limit value of the first set range, or within the first set range. The setting of the second pallet quantity detection component can detect whether the number of bare battery cells on the second real pallet conveyor line is less than the lower limit value of the second set range, more than the upper limit value of the second set range, or within the second set range, thereby obtaining real-time quantity information of the real pallets 9, providing a basis for the electrical control module to control the empty pallet conveyor line 5, so that the empty pallet conveyor line 5 allocates an appropriate number of empty pallets 8 to the two workpiece manufacturing machines, thereby adjusting the output speed of the two workpiece manufacturing machines. After working for a certain period of time, the real-time quantity of the two bare battery cells can reach a basic balance. In this way, the stable and continuous production of battery cells can be carried out, thereby improving the production efficiency of battery cells.

[0142] In some embodiments of the present disclosure, as shown in Figure 5, the first pallet quantity detection component includes a first shortage detection sensor 11 and a first full material detection sensor 12, and the first shortage detection sensor 11 and the first full material detection sensor 12 are sequentially arranged in the conveying path of the first real pallet conveyor line 3. When the real-time number of real pallets 9 on the first real pallet conveyor line 3 is less than the lower limit value of the first set range, the first shortage detection sensor 11 is triggered, and when the real-time number of real pallets 9 on the first real pallet conveyor line 3 is greater than the upper limit value of the first set range, the first full material detection sensor 12 is triggered; the second pallet quantity detection component includes a second shortage detection sensor 13 and a second full material detection sensor 14, and the second shortage detection sensor 13 and the second full material detection sensor 14 are sequentially arranged in the conveying path of the second real pallet conveyor line 4. When the real-time number of real pallets 9 on the second real pallet conveyor line 4 is less than the lower limit value of the second set range, the second shortage detection sensor 13 is triggered, and when the real-time number of real pallets 9 on the second real pallet conveyor line 4 is greater than the upper limit value of the second set range, the second full material detection sensor 14 is triggered.

[0143] The first material shortage detection sensor 11, the first material full detection sensor 12, the second material shortage detection sensor 13 and the second material full detection sensor 14 can be photoelectric sensors, such as photoelectric sensors, photoelectric switches, laser rangefinders, etc.; the first material shortage detection sensor 11, the first material full detection sensor 12, the second material shortage detection sensor 13 and the second material full detection sensor 14 can also be pressure sensors or ultrasonic sensors, etc.

[0144] Exemplarily, the first material shortage detection sensor 11 is a photoelectric sensor, and the real pallets 9 on the first real pallet conveyor line 3 are queued starting from the output end of the first real pallet conveyor line 3. When the queue passes through the shooting area of ​​the first material shortage detection sensor 11, it means that the real-time number of real pallets 9 on the first real pallet conveyor line 3 is greater than the lower limit value of the first set range. When the queue does not pass through the shooting area of ​​the first material shortage detection sensor 11, it means that the real-time number of real pallets 9 on the first real pallet conveyor line 3 is less than the lower limit value of the first set range. In this case, the first material shortage detection sensor 11 is triggered and sends a trigger signal to the electrical control module. It should be noted that, since the first real pallet conveyor line 3 will successively receive the real pallets 9 output by the first workpiece manufacturing machine 1, the shooting area of ​​the first material shortage detection sensor 11 will intermittently pass through the real pallet 9. Therefore, in order to distinguish whether the real pallet 9 passing through the shooting area of ​​the first material shortage detection sensor 11 has been queued or passed by instantaneously, a critical time length for the first material shortage detection sensor 11 to sense the real pallet 9 is set. If the first material shortage detection sensor 11 senses the existence of the real pallet 9 for a short time, for example, it is set that the real pallet 9 flows away after 5 seconds, this situation is If the real pallet 9 passes by temporarily, it is determined that the length of the queue is short and has not passed through the shooting area of ​​the first material shortage detection sensor 11. At this time, the number of real pallets 9 is too small, and the first material shortage detection sensor 11 is triggered; if the first material shortage detection sensor 11 senses the existence of the real pallet 9 for a long time, for example, the time of sensing the existence of the real pallet 9 reaches more than 5 seconds, it means that the queue of the real pallets 9 has entered the shooting area of ​​the first material shortage detection sensor 11, and the queue of the real pallets 9 is long. At this time, it means that the number of real pallets 9 is relatively large, and the first material shortage detection sensor 11 is not triggered. Accordingly, the first full material detection sensor 12 is a photoelectric sensor. The real pallets 9 on the first real pallet conveyor line 3 are queued starting from the output end of the first real pallet conveyor line 3. When the queue does not pass through the shooting area of ​​the first full material detection sensor 12, it means that the real-time number of real pallets 9 on the first real pallet conveyor line 3 is less than the upper limit of the first set range. When the queue passes through the shooting area of ​​the first full material detection sensor 12, it means that the real-time number of real pallets 9 on the first real pallet conveyor line 3 is greater than the upper limit of the first set range. In this case, the first full material detection sensor 12 is triggered and sends a trigger signal to the electrical control module. Accordingly, the triggering principle of the second short-material detection sensor 13 is similar to that of the first short-material detection sensor 11, and the triggering principle of the second full material detection sensor 14 is similar to that of the first full material detection sensor 12. The triggering principle of the second short-material detection sensor 13 and the second full material detection sensor 14 will not be introduced here.

[0145] In this way, when none of the four detection sensors are triggered, the real-time quantity of type A bare cells and type B bare cells are within the first set range and the second set range respectively. At this time, the conveying logistics line is in a stable conveying state, and it is necessary to adopt a quantity-balanced distribution method to allocate empty pallets to the two workpiece manufacturing machines; when the first material shortage detection sensor 11 is triggered and the second full material detection sensor 14 is triggered, the conveying logistics line is in an unbalanced state where type A bare cells are far less than type B bare cells. When the first full material detection sensor 12 is triggered and the second material shortage detection sensor 13 is triggered, the conveying logistics line is in an unbalanced state where type A bare cells are far more than type B bare cells, and it is necessary to allocate empty pallets to the two workpiece manufacturing machines in a distribution method with a large quantity difference; when the first material shortage detection sensor 11 and the second material shortage detection sensor 13 are both triggered, or the first full material detection sensor 12 and the second full material detection sensor 14 are both triggered, it means that the quantity of empty pallets 8 allocated to the two workpiece manufacturing machines is relatively balanced, and the conveying logistics line is in a balanced conveying state, so it is necessary to adopt a balanced distribution method.

[0146] If the conveying logistics line is in a stable conveying state or a balanced conveying state, the electrical control module controls the empty pallet conveying line 5 to convey empty pallets 8 to the first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2 in a relatively balanced proportion; if the conveying logistics line is in an unbalanced state where type A bare cells are far less than type B bare cells, the electrical control module controls the empty pallet conveying line 5 to distribute empty pallets 8 in a manner of allocating more to the first workpiece manufacturing machine 1 and less to the second workpiece manufacturing machine 2; if the conveying logistics line is in an unbalanced state where type A bare cells are far more than type B bare cells, the electrical control module controls the empty pallet conveying line 5 to distribute empty pallets 8 in a manner of allocating less to the first workpiece manufacturing machine 1 and more to the second workpiece manufacturing machine 2. In this way, a small number of bare cells are produced at a normal speed, while a large number of bare cells are produced at a slower speed. After working in this mode for a certain period of time, the conveying logistics line can reach a stable conveying state, thereby ensuring the stable and continuous production of battery cells, thereby improving the production efficiency of battery cells.

[0147] In this way, the first material shortage detection sensor 11 and the first full material detection sensor 12 cooperate to detect whether the real-time number of type A bare cells is within the first set range, or is less than the lower limit value of the first set range, or is greater than the upper limit value of the first set range, that is, the real-time quantity information of type A bare cells is detected; the second material shortage detection sensor 13 and the second full material detection sensor 14 cooperate to detect whether the real-time number of type B bare cells is within the second set range, or is less than the lower limit value of the second set range, or is greater than the upper limit value of the second set range, that is, the real-time quantity information of type B bare cells is detected; the real-time quantity information of type A bare cells and type B bare cells provides a basis for the electrical control module to control the empty pallet conveyor line 5, so that the empty pallet conveyor line allocates an appropriate number of empty pallets to the two workpiece manufacturing machines, thereby adjusting the output speed of the two workpiece manufacturing machines, and after working for a certain period of time, the real-time quantity of the two bare cells can reach a basic balance, so that the stable and continuous production of battery cells can be carried out, thereby improving the production efficiency of battery cells.

[0148] In some embodiments of the present disclosure, the electrical control module has a first control mode, a second control mode and a third control mode. When the real-time number of real pallets 9 in the first real pallet conveyor line 3 and the real-time number of real pallets 9 in the second real pallet conveyor line 4 are respectively in the first set range and the second set range, or are respectively less than the lower limit value of the first set range and the lower limit value of the second set range, or are respectively greater than the upper limit value of the first set range and the upper limit value of the second set range, the electrical control module adopts the first control mode, and the first control mode also serves as the initial default mode; when the real-time number of real pallets 9 in the first real pallet conveyor line 3 is less than the lower limit value of the first set range, and the real-time number of real pallets 9 in the second real pallet conveyor line 4 is greater than the upper limit value of the second set range, the electrical control module adopts the second control mode; when the real-time number of real pallets 9 in the first real pallet conveyor line 3 is greater than the upper limit value of the first set range, and the real-time number of real pallets 9 in the second real pallet conveyor line 4 is less than the lower limit value of the second set range, the electrical control module adopts the third control mode.

[0149] The real-time number of real pallets 9 on the first real pallet conveyor line 3 being within a first set range includes the real-time number of real pallets 9 on the first real pallet conveyor line 3 being equal to the upper limit of the first set range, the real-time number of real pallets 9 being equal to the lower limit of the first set range, and any value between the upper limit and the lower limit. The real-time number of real pallets 9 on the second real pallet conveyor line 4 being within a second set range includes the real-time number of real pallets 9 on the second real pallet conveyor line 4 being equal to the upper limit of the second set range, the real-time number of real pallets 9 being equal to the lower limit of the second set range, and any value between the upper limit and the lower limit. That is, when the real-time quantity of real pallets 9 on the first real pallet conveyor line 3 and the real pallet 9 on the second real pallet conveyor line 4 are respectively at the upper limit value of the first setting range and the upper limit value of the second setting range, or respectively at the lower limit value of the first setting range and the lower limit value of the second setting range, or respectively at the upper limit value of the first setting range and the lower limit value of the second setting range, or respectively at the lower limit value of the first setting range and the upper limit value of the second setting range, or both are between the upper limit value and the lower limit value of their respective setting ranges, the electrical control module adopts the first control mode.

[0150] The above three control modes are switched according to the real-time quantity information of the actual pallet 9, so that the conveying logistics line in an unbalanced state can reach a stable conveying state within the set time, thereby ensuring the stable and continuous production of battery cells, thereby improving the production efficiency of battery cells.

[0151] In some embodiments of the present disclosure, referring to FIG6 (a), in a first control mode, the electrical control module controls the empty pallet conveyor line 5 to convey a set number of empty pallets 8 from each of the first to the last workpiece manufacturing machines in sequence. After all workpiece manufacturing machines meet the set number of empty pallets 8, an empty pallet 8 is added in sequence from the first to the last workpiece manufacturing machine in a cycle until the number of empty pallets 8 cached by each workpiece manufacturing machine reaches the maximum allowable cache amount.

[0152] Referring to (b) in Figure 6, in the second control mode, the electrical control module controls the empty pallet conveyor line 5 to give priority to inputting empty pallets 8 to the first workpiece manufacturing machine 1, maintaining the number of empty pallets 8 cached by each first workpiece manufacturing machine 1 at the maximum allowable cache capacity, and conveying at least a set number of empty pallets 8 to the second workpiece manufacturing machine 2 and temporarily storing these empty pallets 8 outside the entrance of the second workpiece manufacturing machine 2. The empty pallets 8 temporarily stored outside the entrance of the second workpiece manufacturing machine 2 are used to be input into the second workpiece manufacturing machine 2 when the conveying logistics line is switched from the second control mode to the first control mode.

[0153] Referring to (c) in Figure 6, under the third control mode, the electrical control module controls the empty pallet conveyor line 5 to give priority to inputting empty pallets 8 to the second workpiece manufacturing machine 2, maintaining the number of empty pallets 8 cached by each second workpiece manufacturing machine 2 at the maximum allowable cache capacity, and conveying at least a set number of empty pallets 8 to the first workpiece manufacturing machine 1 and temporarily storing these empty pallets 8 outside the entrance of the first workpiece manufacturing machine 1. The empty pallets 8 temporarily stored outside the entrance of the first workpiece manufacturing machine 1 are used to be input into the first workpiece manufacturing machine 1 when the conveying logistics line is switched from the third control mode to the first control mode.

[0154] It can be understood that the maximum allowable buffer capacity refers to the maximum number of empty trays 8 that can be accommodated at the entrance of the workpiece manufacturing machine at the same time. Since the size of the empty tray 8 will vary according to the size of the bare battery cell, it can be seen that when the workpiece manufacturing machine does not change, the maximum allowable buffer capacity is different for empty trays 8 of different sizes, that is, the maximum allowable buffer capacity will change with the change of the size of the bare battery cell. The maximum allowable buffer capacity is determined according to the size of the conveying route of the workpiece manufacturing machine and the size of the empty tray 8 that is suitable for the bare battery cell. The specific value is not specifically limited here.

[0155] Inputting an empty pallet 8 into the workpiece manufacturing machine means sending the empty pallet 8 into the workpiece manufacturing machine. The empty pallet 8 will receive the wound bare battery cells as the workpiece manufacturing machine operates, allowing the workpiece manufacturing machine to continue operating. Temporarily storing the empty pallet 8 outside the entrance of the workpiece manufacturing machine means transporting the empty pallet 8 to the outside of the entrance of the workpiece manufacturing machine without entering the workpiece manufacturing machine. In this case, the workpiece manufacturing machine will suspend operation due to the lack of empty pallets 8 for receiving bare battery cells. Therefore, the speed of outputting battery cells of this type of workpiece manufacturing machine is reduced, while the other workpiece manufacturing machine continues to operate stably due to the normal input of the empty pallet 8, and the speed of outputting battery cells of the other workpiece manufacturing machine remains unchanged. For this reason, after a period of operation, the real-time quantity of the two bare battery cells can reach a balance, that is, the real-time quantity of the real pallets 9 on the first real pallet conveyor line 3 and the real pallet 9 on the second real pallet conveyor line 4 are respectively within the first set range and the second set range.

[0156] After the real-time quantity of the two types of bare cells reaches a balance, the empty trays 8 temporarily stored outside the entrance of the workpiece manufacturing machine are loaded into the workpiece manufacturing machine, causing the workpiece manufacturing machine to start operating and begin producing bare cells at a normal rate. The empty trays 8 are temporarily stored outside the entrance of the workpiece manufacturing machine so that they can be promptly loaded into the workpiece manufacturing machine after the control mode is switched, allowing the workpiece manufacturing machine to operate in a timely manner and preventing the output rate of the bare cells of that type from being affected due to the untimely loading of the empty trays 8.

[0157] The above are the specific operating methods of the three control modes, which can ensure that the real-time number of real pallets 9 on the first real pallet conveyor line 3 and the second real pallet conveyor line 4 are within the first set range and the second set range respectively within the set working time of the conveying logistics line.

[0158] In some embodiments of the present disclosure, the set number includes 3.

[0159] Temporarily delivering 3 empty pallets 8 to the workpiece manufacturing machine can not only meet the workpiece manufacturing machine's demand for empty pallets 8 in a short period of time, but also leave enough empty pallets 8 for other workpiece manufacturing machines, so that the empty pallets 8 can be sufficiently circulated, thereby allowing the conveying logistics line to operate normally.

[0160] In some embodiments of the present disclosure, the set number can be 2, 4, 5 or 6. Of course, it can also be other numbers, which are not specifically limited here.

[0161] In some embodiments of the present disclosure, as shown in Figures 1 and 2, the conveying path of the first solid pallet conveyor line 3, the conveying path of the second solid pallet conveyor line 4 and the conveying path of the empty pallet conveyor line 5 are distributed in sequence from top to bottom, and the workpiece manufacturing machine is arranged on the same side of the first solid pallet conveyor line 3, the second solid pallet conveyor line 4 and the empty pallet conveyor line 5.

[0162] With such distribution, the first full pallet conveyor line 3, the second full pallet conveyor line 4 and the empty pallet conveyor line 5 occupy less space. Moreover, the first full pallet conveyor line 3, the second full pallet conveyor line 4 and the empty pallet conveyor line 5 are all relatively close to the workpiece manufacturing machine, which reduces the space occupied by the conveying logistics lines.

[0163] In some embodiments of the present disclosure, as shown in Figure 5, the conveying path of the second solid pallet conveyor line 4, the conveying path of the merging conveyor line 63 and the conveying path of the workpiece retrieval station 7 are at the same height; the conveying logistics line also includes a first lifting mechanism 61, a third solid pallet conveyor line 62 and a second lifting mechanism 64, the conveying path of the third solid pallet conveyor line 62 and the conveying path of the second solid pallet conveyor line 4 are at the same height, the top input end and the bottom output end of the first lifting mechanism 61 are respectively connected to the output end of the first solid pallet conveyor line 3 and the input end of the third solid pallet conveyor line 62, the output end of the third solid pallet conveyor line 62 is connected to the input end of the merging conveyor line 63, and the top input end and the bottom output end of the second lifting mechanism 64 are respectively connected to the output end of the workpiece retrieval station 7 and the input end of the empty pallet conveyor line 5.

[0164] The solid pallet 9 carrying the first workpiece is transported to the first lifting mechanism 61 via the first solid pallet conveyor line 3, descends through the first lifting mechanism 61 and is transported to the third solid pallet conveyor line 62, the solid pallet 9 on the third solid pallet conveyor line 62 and the solid pallet 9 on the first solid pallet conveyor line 3 are transported to the merge conveyor line 63 according to a preset order, the sorted solid pallets 9 on the merge conveyor line 63 are transported to the workpiece retrieval station 7, the bare battery cells in the solid pallet 9 on the workpiece retrieval station 7 are taken away, and an empty pallet 8 remains at the workpiece retrieval station 7, the empty pallet 8 enters the second lifting mechanism 64 from the workpiece retrieval station 7, descends through the second lifting mechanism 64 and is transported to the empty pallet conveyor line 5, and then the empty pallets 8 are distributed to each workpiece manufacturing machine through the empty pallet conveyor line 5.

[0165] In this way, the circular conveying of the pallet is completed, thereby realizing the transportation of the workpiece. The conveying logistics line has a simple structure, a reasonable layout, and occupies a small space.

[0166] In some embodiments of the present disclosure, the workpiece includes a bare battery cell.

[0167] The conveying logistics line is applied to the solution of conveying bare battery cells, realizing the conveyance of bare battery cells and being able to maintain the stable and continuous production of battery cells, thereby improving the production efficiency of battery cells.

[0168] FIG7 is a flow chart of a pallet logistics control method provided by some embodiments of the present disclosure; FIG8 is a flow chart of a pallet logistics control method provided by other embodiments of the present disclosure.

[0169] The disclosed embodiment also provides a pallet logistics control method, which is applied to a conveying logistics line. The conveying logistics line includes an empty pallet conveyor line 5, a first full pallet conveyor line 3, a second full pallet conveyor line 4, a merging conveyor line 63, a workpiece picking station 7 and an electrical control module. A plurality of workpiece manufacturing machines are sequentially distributed along the extension direction of the empty pallet conveyor line 5. The plurality of workpiece manufacturing machines include at least one first workpiece manufacturing machine 1 and at least one second workpiece manufacturing machine 2 that are alternately distributed. The empty pallet conveyor line 5 is connected to the input end of each workpiece manufacturing machine, and the empty pallet conveyor line 5 is configured to be able to convey an empty pallet 8 that does not carry a workpiece to each workpiece manufacturing machine; the first full pallet conveyor line 3 is connected to the output end of each first workpiece manufacturing machine 1, and the first full pallet conveyor line 3 is configured to be able to receive and convey a full pallet 9 carrying a first workpiece from each first workpiece manufacturing machine 1; the second full pallet conveyor line 4 is connected to each second workpiece manufacturing machine 1. The output end of the manufacturing machine 2 is connected, and the second real pallet conveyor line 4 is configured to receive and convey the real pallet 9 carrying the second workpiece from each second workpiece manufacturing machine 2; the merging conveyor line 63 is connected to the first real pallet conveyor line 3 and the second real pallet conveyor line 4, and the merging conveyor line 63 receives the real pallets 9 from the first real pallet conveyor line 3 and the second real pallet conveyor line 4 according to a preset order; the input and output ends of the workpiece taking station 7 are respectively connected to the output end of the merging conveyor line 63 and the input end of the empty pallet conveyor line 5; the electrical control module is communicatively connected to the empty pallet conveyor line 5, and the electrical control module uses a control method to control the empty pallet conveyor line 5 so that the conveying logistics line reaches a stable conveying state within the working set time, and the stable conveying state includes the real-time number of real pallets on the first real pallet conveyor line and the second real pallet conveyor line being within the first set range and the second set range, respectively.

[0170] As shown in FIG7 , the control method includes:

[0171] S12, real-time quantity information acquisition step: the electrical control module acquires real-time quantity information of the real pallets on the first real pallet conveying line and the real pallets on the second real pallet conveying line;

[0172] S13, empty pallet allocation step: the electrical control module controls the number of empty pallets delivered by the empty pallet conveyor line to each first workpiece manufacturing machine and each second workpiece manufacturing machine according to real-time quantity information.

[0173] In the process of manufacturing battery cells, the pallet logistics control method is applied to control the transfer of pallets for conveying bare cells. The first workpiece manufacturing machine 1 is used to wind type A bare cells, and the second workpiece manufacturing machine 2 is used to wind type B bare cells. The empty pallet conveyor line 5 conveys empty pallets 8 to each first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2. The empty pallet 8 sent to the first workpiece manufacturing machine 1 receives the type A bare cells wound by the first workpiece manufacturing machine 1 and is then sent to the first full pallet conveyor line 3. The empty pallet 8 sent to the second workpiece manufacturing machine 2 receives the type B bare cells wound by the second workpiece manufacturing machine 2. Then it is sent to the second solid pallet conveyor line 4, and the solid pallet 9 on the first solid pallet conveyor line 3 and the solid pallet 9 on the second solid pallet conveyor line 4 are conveyed one by one to the converging conveyor line 63 in a preset order, so that the type A bare cells and type B bare cells on the converging conveyor line 63 are arranged in the order of the bare cells in the battery cell, and the arranged bare cells are taken away in turn and moved to the integration device for integration. After the bare cells on the converging conveyor line 63 are taken away, an empty pallet 8 is left, and the empty pallet 8 flows back from the converging conveyor line 63 to the empty pallet conveyor line 5, and this cycle is repeated to realize the transportation of the bare cells.

[0174] For example, if the real-time number of real pallets 9 on the first real pallet conveyor line 3 and the second real pallet conveyor line 4 is relatively balanced, the electrical control module controls the empty pallet conveyor line 5 to deliver empty pallets 8 to the first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2 in a relatively balanced proportion; if one or more of a certain type of workpiece manufacturing machine reduces the output speed of the bare battery cells when in the waiting-for-material switching state, the number of real pallets 9 on the first real pallet conveyor line 3 and the second real pallet conveyor line 4 will be quite different, that is, the number of bare battery cells on one is larger and the number of bare battery cells on the other is smaller. At this time, the electrical control module increases the number of empty pallets 8 allocated to the workpiece manufacturing machine corresponding to the smaller number of bare battery cells, and reduces the number of empty pallets 8 allocated to the workpiece manufacturing machine corresponding to the larger number of bare battery cells, so that the smaller number of bare battery cells are produced at a normal speed, while the larger number of bare battery cells are produced at a slower speed. After working in this mode for a certain period of time, the real-time number of the two types of bare battery cells can reach a basic balance. In this way, the stable and continuous production of battery cells can be carried out, thereby improving the production efficiency of battery cells.

[0175] During the above-mentioned conveying process, the electrical control module controls the number of empty trays 8 delivered to each workpiece manufacturing machine based on the real-time quantity of the two types of bare cells, thereby affecting the output speed of the two types of bare cells. As a result, over time, the difference in the real-time quantity of the two types of bare cells can be narrowed, thereby achieving a stable conveying state. This can ensure the stable and continuous production of battery cells, thereby improving the production efficiency of battery cells.

[0176] In some embodiments of the present disclosure, the electrical control module has a first control mode, a second control mode, and a third control mode. The first control mode is used as the initial default mode. As shown in FIG8 , the empty tray allocation step includes:

[0177] S131. When the real-time number of real pallets 9 on the first real pallet conveyor line 3 and the real-time number of real pallets 9 on the second real pallet conveyor line 4 are respectively in the first set range and the second set range, or are respectively less than the lower limit value of the first set range and the lower limit value of the second set range, or are respectively greater than the upper limit value of the first set range and the upper limit value of the second set range, the electrical control module adopts the first control mode.

[0178] S132. When the real-time number of real pallets 9 on the first real pallet conveyor line 3 is less than the lower limit of the first set range, and the real-time number of real pallets 9 on the second real pallet conveyor line 4 is greater than the upper limit of the second set range, the electrical control module adopts the second control mode.

[0179] S133. When the real-time number of real pallets 9 on the first real pallet conveyor line 3 is greater than the upper limit value of the first set range, and the real-time number of real pallets 9 on the second real pallet conveyor line 4 is less than the lower limit value of the second set range, the electrical control module adopts the third control mode.

[0180] It is understandable that there is no fixed order among step S131, step S132 and step S133, and the execution order of the three steps is selected according to the result obtained in step S12.

[0181] The above three control modes are switched according to the real-time number of actual pallets 9, so that the conveying logistics line in an unbalanced state can reach a stable conveying state within the set time, thereby ensuring the stable and continuous production of battery cells, thereby improving the production efficiency of battery cells.

[0182] In some embodiments of the present disclosure, in a first control mode, the electrical control module controls the empty pallet conveyor line 5 to convey a set number of empty pallets 8 to each of the workpiece manufacturing machines from the first to the last in sequence. After all workpiece manufacturing machines meet the set number of empty pallets 8, an empty pallet 8 is added in sequence from the first to the last workpiece manufacturing machine until the number of empty pallets 8 cached by each workpiece manufacturing machine reaches the maximum allowable cache capacity; in a second control mode, the electrical control module controls the empty pallet conveyor line 5 to give priority to inputting empty pallets 8 to the first workpiece manufacturing machine 1, maintaining the number of empty pallets 8 cached by each first workpiece manufacturing machine 1 at the maximum allowable cache capacity, and conveying at least a set number of empty pallets 8 to the second workpiece manufacturing machine 2 and temporarily storing these empty pallets 8 outside the entrance of the second workpiece manufacturing machine 2; in a third control mode, the electrical control module controls the empty pallet conveyor line 5 to give priority to inputting empty pallets 8 to the second workpiece manufacturing machine 2, maintaining the number of empty pallets 8 cached by each second workpiece manufacturing machine 2 at the maximum allowable cache capacity, and conveying at least a set number of empty pallets 8 to the first workpiece manufacturing machine 1 and temporarily storing these empty pallets 8 outside the entrance of the first workpiece manufacturing machine 1; the set number includes 3.

[0183] Inputting an empty pallet 8 into the workpiece manufacturing machine means sending the empty pallet 8 into the workpiece manufacturing machine. The empty pallet 8 will receive the wound bare battery cells as the workpiece manufacturing machine operates, allowing the workpiece manufacturing machine to continue operating. Temporarily storing the empty pallet 8 outside the entrance of the workpiece manufacturing machine means transporting the empty pallet 8 to the outside of the entrance of the workpiece manufacturing machine without entering the workpiece manufacturing machine. In this case, the workpiece manufacturing machine will suspend operation due to the lack of empty pallets 8 for receiving bare battery cells. Therefore, the speed of outputting battery cells of this type of workpiece manufacturing machine is reduced, while the other workpiece manufacturing machine continues to operate stably due to the normal input of the empty pallet 8, and the speed of outputting battery cells of the other workpiece manufacturing machine remains unchanged. For this reason, after a period of operation, the real-time quantity of the two bare battery cells can reach a balance, that is, the real-time quantity of the real pallets 9 on the first real pallet conveyor line 3 and the real pallet 9 on the second real pallet conveyor line 4 are respectively within the first set range and the second set range.

[0184] After the real-time quantity of the two types of bare cells reaches a balance, the empty trays 8 temporarily stored outside the entrance of the workpiece manufacturing machine are loaded into the workpiece manufacturing machine, causing the workpiece manufacturing machine to start operating and begin producing bare cells at a normal rate. The empty trays 8 are temporarily stored outside the entrance of the workpiece manufacturing machine so that they can be promptly loaded into the workpiece manufacturing machine after the control mode is switched, allowing the workpiece manufacturing machine to operate in a timely manner and preventing the output rate of the bare cells of that type from being affected due to the untimely loading of the empty trays 8.

[0185] The above are the specific operating methods of the three control modes, which can ensure that the real-time number of real pallets 9 on the first real pallet conveyor line 3 and the second real pallet conveyor line 4 are within the first set range and the second set range respectively within the set working time of the conveying logistics line.

[0186] In some embodiments of the present disclosure, the workpiece includes a bare battery cell.

[0187] The conveying logistics line is applied to the solution of conveying bare battery cells, realizing the conveyance of bare battery cells and being able to maintain the stable and continuous production of battery cells, thereby improving the production efficiency of battery cells.

[0188] Figure 9 is a flow chart of a logistics transport method provided by some embodiments of the present disclosure; Figure 10 is a flow chart of a logistics transport method provided by other embodiments of the present disclosure; Figure 11 is a flow chart of a logistics transport method provided by still other embodiments of the present disclosure.

[0189] The embodiment of the present disclosure also provides a conveying logistics method, which is used in a conveying logistics line. The conveying logistics line can achieve a stable conveying state within the set working time by using the conveying logistics method. The stable conveying state includes the real-time number of real pallets in the first real pallet conveyor line 3 and the second real pallet conveyor line 4 being respectively within the first set range and the second set range. The conveying logistics line includes an empty pallet conveyor line 5, a first real pallet conveyor line 3, a second real pallet conveyor line 4, a merging conveyor line 63, a workpiece picking station 7 and an electrical control module. The empty pallet conveyor line 5 is sequentially distributed with multiple workpiece manufacturing machines along the extension direction of the empty pallet conveyor line 5. The multiple workpiece manufacturing machines include at least one first workpiece manufacturing machine 1 and at least one second workpiece manufacturing machine 1 that are alternately distributed. empty pallet conveyor line 5; the input and output ends of the workpiece taking station 7 are connected to the output end of the merging conveyor line 63 and the input end of the empty pallet conveyor line 5; the electrical control module is communicatively connected to the empty pallet conveyor line 5.

[0190] As shown in FIG9 , the workpiece conveying logistics method includes:

[0191] S1. Electrical control step: The electrical control module obtains real-time quantity information of the full pallets on the first full pallet conveyor line and the second full pallet conveyor line, and controls the quantity of empty pallets delivered by the empty pallet conveyor line to each first workpiece manufacturing machine and each second workpiece manufacturing machine according to the real-time quantity information;

[0192] S2, workpiece receiving step: the workpiece manufacturing machine inputs an empty pallet to the material receiving position, places the manufactured workpiece into the empty pallet, and then outputs the full pallet carrying the workpiece to the first full pallet conveyor line and the second full pallet conveyor line, wherein the first workpiece manufacturing machine and the second workpiece manufacturing machine output the full pallet to the first full pallet conveyor line and the second full pallet conveyor line respectively;

[0193] S3, merging step: the merging conveyor line receives the full pallets from the first full pallet conveyor line and the second full pallet conveyor line according to a preset order;

[0194] S4, workpiece retrieval step: the workpiece retrieval station receives a full pallet from the merging conveyor line, the workpieces in the full pallet are taken away and an empty pallet remains at the output end of the workpiece retrieval station, and the empty pallet is transported to the empty pallet conveyor line by the workpiece retrieval station.

[0195] When the workpiece conveying logistics method is used to manufacture battery cells, the first workpiece manufacturing machine 1 is used to wind type A bare cells, and the second workpiece manufacturing machine 2 is used to wind type B bare cells. The empty pallet conveyor line 5 conveys empty pallets 8 to each first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2. The empty pallet 8 sent to the first workpiece manufacturing machine 1 receives the type A bare cells wound by the first workpiece manufacturing machine 1 and is then sent to the first full pallet conveyor line 3. The empty pallet 8 sent to the second workpiece manufacturing machine 2 receives the type B bare cells wound by the second workpiece manufacturing machine 2 and is then sent to the second full pallet. Conveyor line 4, the solid pallet 9 on the first solid pallet conveyor line 3 and the solid pallet 9 on the second solid pallet conveyor line 4 are conveyed one by one to the converging conveyor line 63 in a preset order, so that the type A bare cells and type B bare cells on the converging conveyor line 63 are arranged in the order of the bare cells in the battery cell. The arranged bare cells are taken away in turn and moved to the integration device for integration. After the bare cells on the converging conveyor line 63 are taken away, empty pallets 8 are left. The empty pallets 8 flow back from the converging conveyor line 63 to the empty pallet conveyor line 5, and this cycle is repeated to realize the transportation of the bare cells.

[0196] Exemplarily, during the conveying process, if the number of real pallets 9 on the first real pallet conveyor line 3 and the second real pallet conveyor line 4 is relatively balanced, the electrical control module controls the empty pallet conveyor line 5 to convey empty pallets 8 to the first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2 in a relatively balanced proportion; if one or more of a certain type of workpiece manufacturing machine reduces the output speed of the bare battery cells when in the waiting-for-material switching state, the number of real pallets 9 on the first real pallet conveyor line 3 and the second real pallet conveyor line 4 will be quite different, that is, the number of bare battery cells on one is larger and the number of bare battery cells on the other is smaller. At this time, the electrical control module increases the number of empty pallets 8 allocated to the workpiece manufacturing machine corresponding to the smaller number of bare battery cells, and reduces the number of empty pallets 8 allocated to the workpiece manufacturing machine corresponding to the larger number of bare battery cells, so that the smaller number of bare battery cells are produced at a normal speed, while the larger number of bare battery cells are produced at a slower speed. After working in this mode for a certain period of time, the real-time quantity of the two types of bare battery cells can reach a basic balance. In this way, the stable and continuous production of battery cells can be carried out, thereby improving the production efficiency of battery cells.

[0197] During the above-mentioned conveying process, the electrical control module controls the number of empty trays 8 delivered to each workpiece manufacturing machine based on the real-time quantity of the two types of bare cells, thereby affecting the output speed of the two types of bare cells. As a result, over time, the difference in the real-time quantity of the two types of bare cells can be narrowed, thereby achieving a stable conveying state. This can ensure the stable and continuous production of battery cells, thereby improving the production efficiency of battery cells.

[0198] In some embodiments of the present disclosure, as shown in FIG10 , the electrical control step includes:

[0199] S11, initial allocation step: the electrical control module uses an initial default mode to control the empty pallet conveying line to convey an empty pallet without a workpiece to each workpiece manufacturing machine;

[0200] S12, real-time quantity information acquisition step: the electrical control module acquires real-time quantity information of the real pallets on the first real pallet conveying line and the real pallets on the second real pallet conveying line;

[0201] S13, empty pallet allocation step: the electrical control module controls the number of empty pallets delivered by the empty pallet conveyor line to each first workpiece manufacturing machine and each second workpiece manufacturing machine according to real-time quantity information.

[0202] In this way, the range of the real-time quantity of the first workpiece and the second workpiece can be obtained through the above steps, which provides a basis for the electrical control module to control the empty pallet conveyor line, so that the empty pallet conveyor line can allocate an appropriate number of empty pallets to the two workpiece manufacturing machines, thereby adjusting the output speed of the two workpiece manufacturing machines. After working for a certain period of time, the real-time quantity of the two bare battery cells can reach a basic balance. In this way, the production of battery cells can be carried out stably and continuously, thereby improving the production efficiency of battery cells.

[0203] In some embodiments of the present disclosure, the electrical control module has a first control mode, a second control mode, and a third control mode. The first control mode is used as the initial default mode. As shown in FIG11 , the empty tray allocation step includes:

[0204] S131: When the real-time number of the real pallets 9 on the first real pallet conveyor line 3 and the real-time number of the real pallets 9 on the second real pallet conveyor line 4 are respectively within the first set range and the second set range, or are respectively less than the lower limit value of the first set range and the lower limit value of the second set range, or are respectively greater than the upper limit value of the first set range and the upper limit value of the second set range, the electrical control module adopts the first control mode;

[0205] S132: When the real-time number of the real pallets 9 on the first real pallet conveyor line 3 is less than the lower limit of the first set range, and the real-time number of the real pallets 9 on the second real pallet conveyor line 4 is greater than the upper limit of the second set range, the electrical control module adopts the second control mode;

[0206] S133. When the real-time number of real pallets 9 on the first real pallet conveyor line 3 is greater than the upper limit value of the first set range, and the real-time number of real pallets 9 on the second real pallet conveyor line 4 is less than the lower limit value of the second set range, the electrical control module adopts the third control mode.

[0207] It is understandable that there is no fixed order among step S131, step S132 and step S133, and the execution order of the three steps is selected according to the result obtained in step S12.

[0208] The above three control modes are switched according to the range of the real-time number of actual pallets 9, so that the conveying logistics line in an unbalanced state can reach a stable conveying state within the set time, thereby ensuring the stable and continuous production of battery cells, thereby improving the production efficiency of battery cells.

[0209] In some embodiments of the present disclosure, in a first control mode, the electrical control module controls the empty pallet conveyor line 5 to convey a set number of empty pallets 8 from each of the first to the last workpiece manufacturing machines in sequence. After all workpiece manufacturing machines meet the set number of empty pallets 8, an empty pallet 8 is added in sequence from the first to the last workpiece manufacturing machine in a cycle until the number of empty pallets 8 cached by each workpiece manufacturing machine reaches the maximum allowable cache capacity.

[0210] In the second control mode, the electrical control module controls the empty pallet conveyor line 5 to give priority to inputting empty pallets 8 to the first workpiece manufacturing machine 1, maintaining the number of empty pallets 8 cached by each first workpiece manufacturing machine 1 at the maximum allowable cache capacity, and conveying at least a set number of empty pallets 8 to the second workpiece manufacturing machine 2 and temporarily storing these empty pallets 8 outside the entrance of the second workpiece manufacturing machine 2.

[0211] In the third control mode, the electrical control module controls the empty pallet conveyor line 5 to prioritize the input of empty pallets 8 to the second workpiece manufacturing machine 2, maintaining the maximum allowable buffer capacity of empty pallets 8 in each second workpiece manufacturing machine 2, and to deliver at least a set number of empty pallets 8 to the first workpiece manufacturing machine 1 and temporarily store these empty pallets 8 outside the entrance of the first workpiece manufacturing machine 1. The set number includes three.

[0212] Inputting an empty pallet 8 into the workpiece manufacturing machine means sending the empty pallet 8 into the workpiece manufacturing machine. The empty pallet 8 will receive the wound bare battery cells as the workpiece manufacturing machine operates, allowing the workpiece manufacturing machine to continue operating. Temporarily storing the empty pallet 8 outside the entrance of the workpiece manufacturing machine means transporting the empty pallet 8 to the outside of the entrance of the workpiece manufacturing machine without entering the workpiece manufacturing machine. In this case, the workpiece manufacturing machine will suspend operation due to the lack of empty pallets 8 for receiving bare battery cells. Therefore, the speed of outputting battery cells of this type of workpiece manufacturing machine is reduced, while the other workpiece manufacturing machine continues to operate stably due to the normal input of the empty pallet 8, and the speed of outputting battery cells of the other workpiece manufacturing machine remains unchanged. For this reason, after a period of operation, the real-time quantity of the two bare battery cells can reach a balance, that is, the real-time quantity of the real pallets 9 on the first real pallet conveyor line 3 and the real pallet 9 on the second real pallet conveyor line 4 are respectively within the first set range and the second set range.

[0213] After the real-time quantity of the two types of bare cells reaches a balance, the empty trays 8 temporarily stored outside the entrance of the workpiece manufacturing machine are loaded into the workpiece manufacturing machine, causing the workpiece manufacturing machine to start operating and begin producing bare cells at a normal rate. The empty trays 8 are temporarily stored outside the entrance of the workpiece manufacturing machine so that they can be promptly loaded into the workpiece manufacturing machine after the control mode is switched, allowing the workpiece manufacturing machine to operate in a timely manner and preventing the output rate of the bare cells of that type from being affected due to the untimely loading of the empty trays 8.

[0214] The above are the specific operating methods of the three control modes, which can ensure that the real-time number of real pallets 9 on the first real pallet conveyor line 3 and the second real pallet conveyor line 4 are within the first set range and the second set range respectively within the set working time of the conveying logistics line.

[0215] Temporarily delivering 3 empty pallets 8 to the workpiece manufacturing machine can not only meet the workpiece manufacturing machine's demand for empty pallets 8 in a short period of time, but also leave enough empty pallets 8 for other workpiece manufacturing machines, so that the empty pallets 8 can be sufficiently circulated, thereby allowing the conveying logistics line to operate normally.

[0216] In some embodiments of the present disclosure, the set number can be 2, 4, 5 or 6. Of course, it can also be other numbers, which are not specifically limited here.

[0217] In some embodiments of the present disclosure, the workpiece includes a bare battery cell.

[0218] The conveying logistics line is applied to the solution of conveying bare battery cells, realizing the conveyance of bare battery cells and being able to maintain the stable and continuous production of battery cells, thereby improving the production efficiency of battery cells.

[0219] Specific examples of some embodiments of the present disclosure are described below with reference to the accompanying drawings.

[0220] As a specific example, a conveyor logistics line primarily consists of hardware equipment and electrical control. The hardware equipment includes winding machine A (first workpiece manufacturing machine 1), winding machine B (second workpiece manufacturing machine 2), the first full pallet A logistics line (first full pallet conveyor line 3), the full pallet B logistics line (second full pallet conveyor line 4), the empty pallet return logistics line (empty pallet conveyor line 5), the full pallet A elevator (first elevator mechanism 61), the second full pallet A logistics line (full pallet conveyor line 62), the full pallet confluence logistics line (confluence conveyor line 63), the empty pallet return elevator (second elevator mechanism 64), pallets without bare cells (empty pallets 8), the cell removal station (workpiece removal station 7), and pallets loaded with bare cells (full pallets 9). The electrical control module (electrical control module) includes the entire set of electrical control hardware circuits and PLC programs. The empty pallet return logistics line is located on the bottom layer, the full pallet B logistics line and the second full pallet A logistics line are located on the second layer, and the first full pallet A logistics line is located on the third layer.

[0221] Empty pallets without bare cells are returned to winders A and B via the empty pallet return logistics line, where they are lifted by the winding machine's internal lifting mechanism to the first and second full pallet A logistics lines. Pallets loaded with A cells are lowered from the third level of the first full pallet A logistics line via the pallet A elevator to the second full pallet A logistics line on the second level. Pallets loaded with B cells are then transferred to the pallet B logistics line on the second level. The electrical control module controls the order in which A and B cells enter the full pallet converging logistics line, arranging them in the same order as the bare cells within the battery cell. The cells are removed from the pallets at the subsequent cell removal station, freeing up empty pallets.

[0222] The empty pallets enter the empty pallet return elevator and return to the empty pallet return logistics line. During the reflow process, the electrical control module controls the number of empty pallets delivered to each winder A and each winder B according to the real-time quantity of the two bare battery cells, thereby affecting the output speed of the two bare battery cells, so that the real-time quantity gap between the two bare battery cells can be narrowed, thereby achieving a stable delivery state.

[0223] The above embodiments are intended only to illustrate the technical solutions of the present disclosure, and are not intended to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. Such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the various embodiments of the present disclosure, and are intended to be encompassed by the specification of the present disclosure. In particular, the various technical features described in the various embodiments may be combined in any manner, as long as there are no structural conflicts. Industrial Applicability

[0224] The present disclosure discloses a conveying logistics line and method, and a pallet logistics control method. The conveying logistics line includes an empty pallet conveying line, a first full pallet conveying line, a second full pallet conveying line, a merging conveying line, a workpiece picking station and an electrical control module. The electrical control module is communicatively connected to the empty pallet conveying line and is used to control the number of empty pallets conveyed by the empty pallet conveying line to each first workpiece manufacturing machine and each second workpiece manufacturing machine according to the real-time number information of the real pallets on the first real pallet conveying line and the second real pallet conveying line, so as to achieve a stable conveying state within the set working time of the conveying logistics line. The stable conveying state includes the real-time number of the real pallets on the first real pallet conveying line and the real pallet on the second real pallet conveying line being within the first set range and the second set range respectively. The conveying logistics line and method, and the pallet logistics control method provided by the present disclosure simplify the structure and improve the conveying efficiency.

Claims

1. A conveying logistics line, comprising: An empty pallet conveyor line, wherein a plurality of workpiece manufacturing machines are sequentially distributed along an extension direction of the empty pallet conveyor line, wherein the plurality of workpiece manufacturing machines include at least one first workpiece manufacturing machine and at least one second workpiece manufacturing machine that are alternately distributed, and the empty pallet conveyor line is connected to an input end of each of the workpiece manufacturing machines, and the empty pallet conveyor line is configured to convey an empty pallet without a workpiece to each of the workpiece manufacturing machines; a first solid pallet conveying line connected to an output end of each of the first workpiece manufacturing machines, wherein the first solid pallet conveying line is configured to receive and convey a solid pallet carrying a first workpiece from each of the first workpiece manufacturing machines; a second solid pallet conveying line connected to an output end of each of the second workpiece manufacturing machines, wherein the second solid pallet conveying line is configured to receive and convey a solid pallet carrying a second workpiece from each of the second workpiece manufacturing machines; a merging conveyor line connected to the first solid pallet conveyor line and the second solid pallet conveyor line, the merging conveyor line being configured to receive the solid pallets from the first solid pallet conveyor line and the solid pallets from the second solid pallet conveyor line according to a preset order; A workpiece taking station, the input end and the output end of which are respectively connected to the output end of the merging conveyor line and the input end of the empty pallet conveyor line; An electrical control module is communicatively connected to the empty pallet conveyor line, and is used to control the number of empty pallets delivered by the empty pallet conveyor line to each of the first workpiece manufacturing machine and each of the second workpiece manufacturing machine according to the real-time quantity information of the real pallets on the first real pallet conveyor line and the second real pallet conveyor line, so as to achieve a stable conveying state within the set working time of the conveying logistics line, and the stable conveying state includes the real-time number of real pallets on the first real pallet conveyor line and the real pallet on the second real pallet conveyor line being within a first set range and a second set range, respectively.

2. The conveying flow line according to claim 1, wherein: The first real pallet conveyor line is provided with a first pallet quantity detection component, the first pallet quantity detection component being used to detect the relationship between the real-time quantity of the real pallets on the first real pallet conveyor line and the upper limit and lower limit of the first set range; The second real pallet conveyor line is provided with a second pallet quantity detection component, which is used to detect the relationship between the real number of the real pallets on the second real pallet conveyor line and the upper limit and lower limit of the second set range; The electrical control module is communicatively connected to the first pallet quantity detection component and the second pallet quantity detection component, and can control the number of empty pallets delivered by the empty pallet conveyor line to each first workpiece manufacturing machine and each second workpiece manufacturing machine based on the data information detected by the first pallet quantity detection component and the second pallet quantity detection component.

3. The conveying flow line according to claim 2, wherein: The first pallet quantity detection component includes a first material shortage detection sensor and a first material full detection sensor, and the first material shortage detection sensor and the first material full detection sensor are sequentially arranged on the conveying path of the first real pallet conveying line. When the real-time number of the real pallets on the first real pallet conveying line is less than the lower limit of the first set range, the first out-of-stock detection sensor is triggered; when the real-time number of the real pallets on the first real pallet conveying line is greater than the upper limit of the first set range, the first full-stock detection sensor is triggered; The second pallet quantity detection component includes a second material shortage detection sensor and a second material full detection sensor, and the second material shortage detection sensor and the second material full detection sensor are sequentially arranged on the conveying path of the second real pallet conveying line. When the real-time number of real pallets on the second real pallet conveyor line is less than the lower limit value of the second set range, the second out-of-stock detection sensor is triggered; when the real-time number of real pallets on the second real pallet conveyor line is greater than the upper limit value of the second set range, the second full-stock detection sensor is triggered.

4. The conveying flow line according to any one of claims 1 to 3, wherein: The electrical control module has a first control mode, a second control mode and a third control mode, When the real-time number of real pallets on the first real pallet conveying line and the real-time number of real pallets on the second real pallet conveying line are respectively within the first setting range and the second setting range, or are respectively less than the lower limit value of the first setting range and the lower limit value of the second setting range, or are respectively greater than the upper limit value of the first setting range and the upper limit value of the second setting range, the electrical control module adopts the first control mode, and the first control mode is also used as the initial default mode; When the real-time number of the real pallets on the first real pallet conveyor line is less than the lower limit of the first set range, and the real-time number of the real pallets on the second real pallet conveyor line is greater than the upper limit of the second set range, the electrical control module adopts the second control mode; When the real-time number of real pallets on the first real pallet conveyor line is greater than the upper limit value of the first setting range, and the real-time number of real pallets on the second real pallet conveyor line is less than the lower limit value of the second setting range, the electrical control module adopts the third control mode.

5. The conveying flow line according to claim 4, wherein: In the first control mode, the electrical control module controls the empty pallet conveyor line to sequentially input a set number of empty pallets from the first to the last workpiece manufacturing machine. After all workpiece manufacturing machines meet the set number of empty pallets, they will then input a set number of empty pallets from the first to the last workpiece manufacturing machine. The machines add an empty pallet in turn in a cycle until the number of empty pallets cached by each workpiece manufacturing machine reaches the maximum allowed cache capacity; In the second control mode, the electrical control module controls the empty pallet conveyor line to give priority to inputting empty pallets to the first workpiece manufacturing machine, maintains the number of empty pallets cached by each first workpiece manufacturing machine to reach the maximum allowable cache capacity, and conveys at least the set number of empty pallets to the second workpiece manufacturing machine and temporarily stores these empty pallets outside the entrance of the second workpiece manufacturing machine. The empty pallet temporarily stored outside the entrance of the second workpiece manufacturing machine is used to be input into the second workpiece manufacturing machine when the conveying logistics line is switched from the second control mode to the first control mode; In the third control mode, the electrical control module controls the empty pallet conveyor line to give priority to inputting empty pallets to the second workpiece manufacturing machine, maintains the number of empty pallets cached by each second workpiece manufacturing machine to reach the maximum allowable cache capacity, and conveys at least the set number of empty pallets to the first workpiece manufacturing machine and temporarily stores these empty pallets outside the entrance of the first workpiece manufacturing machine. The empty pallet temporarily stored outside the entrance of the first workpiece manufacturing machine is used to be input into the first workpiece manufacturing machine when the conveying logistics line is switched from the third control mode to the first control mode.

6. The conveying flow line according to claim 5, wherein: The set quantity includes 3.

7. The conveying flow line according to any one of claims 1 to 6, wherein: The conveying path of the first solid pallet conveyor line, the conveying path of the second solid pallet conveyor line and the conveying path of the empty pallet conveyor line are distributed in sequence from top to bottom, and the workpiece manufacturing machine is arranged on the same side of the first solid pallet conveyor line, the second solid pallet conveyor line and the empty pallet conveyor line.

8. The conveying flow line according to claim 7, wherein: The conveying path of the second solid pallet conveying line, the conveying path of the merging conveying line and the conveying path of the workpiece taking station are at the same height; The conveying logistics line also includes a first lifting mechanism, a third solid pallet conveying line and a second lifting mechanism. The conveying path of the third solid pallet conveying line and the conveying path of the second solid pallet conveying line have the same height. The top input end and the bottom output end of the first lifting mechanism are respectively connected to the output end of the first solid pallet conveying line and the input end of the third solid pallet conveying line. The output end of the third solid pallet conveying line is connected to the input end of the merging conveying line. The top input end and the bottom output end of the second lifting mechanism are respectively connected to the output end of the workpiece taking station and the input end of the empty pallet conveying line.

9. The conveying flow line according to any one of claims 1 to 8, wherein: The workpiece includes a bare battery cell.

10. A pallet logistics control method, applied to a conveyor logistics line, the conveyor logistics line comprising: An empty pallet conveyor line, wherein a plurality of workpiece manufacturing machines are sequentially distributed along an extension direction of the empty pallet conveyor line, wherein the plurality of workpiece manufacturing machines include at least one first workpiece manufacturing machine and at least one second workpiece manufacturing machine that are alternately distributed, and the empty pallet conveyor line is connected to an input end of each of the workpiece manufacturing machines, and the empty pallet conveyor line is configured to convey an empty pallet without a workpiece to each of the workpiece manufacturing machines; a first solid pallet conveying line connected to an output end of each of the first workpiece manufacturing machines, wherein the first solid pallet conveying line is configured to receive and convey a solid pallet carrying a first workpiece from each of the first workpiece manufacturing machines; a second solid pallet conveying line connected to an output end of each of the second workpiece manufacturing machines, wherein the second solid pallet conveying line is configured to receive and convey a solid pallet carrying a second workpiece from each of the second workpiece manufacturing machines; a merging conveyor line connected to the first solid pallet conveyor line and the second solid pallet conveyor line, wherein the merging conveyor line receives the solid pallets from the first solid pallet conveyor line and the second solid pallet conveyor line according to a preset order; A workpiece taking station, the input end and the output end of which are respectively connected to the output end of the merging conveyor line and the input end of the empty pallet conveyor line; an electrical control module, communicatively connected to the empty pallet conveyor line, the electrical control module using the control method to control the empty pallet conveyor line so that the conveying flow line reaches a stable conveying state within a set working time, the stable conveying state comprising the real-time number of real pallets on the first and second real pallet conveyor lines being within a first set range and a second set range, respectively; The control method includes: A real-time quantity information acquisition step, wherein the electrical control module acquires real-time quantity information of the real pallets on the first real pallet conveying line and the real pallets on the second real pallet conveying line; In the empty pallet allocation step, the electrical control module controls the number of empty pallets delivered by the empty pallet conveyor line to each of the first workpiece manufacturing machine and each of the second workpiece manufacturing machine according to the real-time quantity information.

11. The pallet logistics control method according to claim 10, wherein: The electrical control module has a first control mode, a second control mode, and a third control mode. The first control mode is used as an initial default mode. The empty tray allocation step includes: When the real-time number of real pallets on the first real pallet conveying line and the real-time number of real pallets on the second real pallet conveying line are respectively within the first setting range and the second setting range, or are respectively less than the lower limit value of the first setting range and the lower limit value of the second setting range, or are respectively greater than the upper limit value of the first setting range and the upper limit value of the second setting range, the electrical control module adopts the first control mode; When the real-time number of the real pallets in the first real pallet conveying line is less than the lower limit of the first setting range, and the real-time number of the real pallets in the second real pallet conveying line is greater than the upper limit of the second setting range, the electrical control The module adopts the second control mode; When the real-time number of real pallets on the first real pallet conveyor line is greater than the upper limit value of the first setting range, and the real-time number of real pallets on the second real pallet conveyor line is less than the lower limit value of the second setting range, the electrical control module adopts the third control mode.

12. The pallet logistics control method according to claim 11, wherein: In the first control mode, the electrical control module controls the empty pallet conveyor line to sequentially convey a set number of empty pallets from each of the first to the last workpiece manufacturing machines. After all workpiece manufacturing machines have met the set number of empty pallets, an empty pallet is added in sequence from the first to the last workpiece manufacturing machine until the number of empty pallets cached by each workpiece manufacturing machine reaches the maximum allowable cache capacity. In the second control mode, the electrical control module controls the empty pallet conveyor line to preferentially input empty pallets to the first workpiece manufacturing machine, maintains the number of empty pallets buffered by each first workpiece manufacturing machine at a maximum allowable buffer capacity, and conveys at least the set number of empty pallets to the second workpiece manufacturing machine and temporarily stores these empty pallets outside the entrance of the second workpiece manufacturing machine; In the third control mode, the electrical control module controls the empty pallet conveyor line to preferentially input empty pallets to the second workpiece manufacturing machine, maintains the number of empty pallets buffered by each second workpiece manufacturing machine at a maximum allowable buffer capacity, and conveys at least the set number of empty pallets to the first workpiece manufacturing machine and temporarily stores these empty pallets outside the entrance of the first workpiece manufacturing machine; The set quantity includes 3.

13. A logistics conveying method, used in a logistics conveying line, The conveying flow line includes: An empty pallet conveyor line, wherein a plurality of workpiece manufacturing machines are sequentially distributed along an extension direction of the empty pallet conveyor line, wherein the plurality of workpiece manufacturing machines include at least one first workpiece manufacturing machine and at least one second workpiece manufacturing machine that are alternately distributed; a first solid pallet conveying line connected to an output end of each of the first workpiece manufacturing machines, wherein the first solid pallet conveying line is configured to receive and convey a solid pallet carrying a first workpiece from each of the first workpiece manufacturing machines; a second solid pallet conveying line connected to an output end of each of the second workpiece manufacturing machines, wherein the second solid pallet conveying line is configured to receive and convey a solid pallet carrying a second workpiece from each of the second workpiece manufacturing machines; a merging conveyor line connected to the first solid pallet conveyor line and the second solid pallet conveyor line; A workpiece taking station, whose input and output ends are connected to the output end of the merging conveyor line and the input end of the empty pallet conveyor line; an electrical control module, communicatively connected to the empty pallet conveyor line; The method for conveying logistics includes: an electrical control step, wherein the electrical control module obtains real-time quantity information of the real pallets on the first real pallet conveyor line and the second real pallet conveyor line, and controls the quantity of empty pallets conveyed by the empty pallet conveyor line to each of the first workpiece manufacturing machine and each of the second workpiece manufacturing machine according to the real-time quantity information; a workpiece receiving step, wherein the workpiece manufacturing machine inputs an empty pallet into a material receiving position, places the formed workpiece into the empty pallet, and then outputs the solid pallet carrying the workpiece to the first solid pallet conveyor line and the second solid pallet conveyor line, wherein the first workpiece manufacturing machine and the second workpiece manufacturing machine output the solid pallet to the first solid pallet conveyor line and the second solid pallet conveyor line respectively; a merging step, wherein the merging conveyor line receives the real pallets from the first real pallet conveyor line and the second real pallet conveyor line according to a preset order; a workpiece taking step, wherein the workpiece taking station receives the full pallet from the merging conveyor line, the workpieces in the full pallet are taken away, and an empty pallet remains at the output end of the workpiece taking station, and the empty pallet is conveyed to the empty pallet conveyor line by the workpiece taking station; The conveying logistics line can reach a stable conveying state within the working set time using the conveying logistics method, and the stable conveying state includes the real-time number of real pallets on the first real pallet conveying line and the second real pallet conveying line being within the first set range and the second set range respectively.

14. The method for transporting logistics according to claim 13, wherein: The electrical control step includes: In an initial allocation step, the electrical control module uses an initial default mode to control the empty pallet conveying line to convey an empty pallet without a workpiece to each of the workpiece manufacturing machines; A real-time quantity information acquisition step, wherein the electrical control module acquires real-time quantity information of the real pallets on the first real pallet conveying line and the real pallets on the second real pallet conveying line; In the empty pallet allocation step, the electrical control module controls the number of empty pallets delivered by the empty pallet conveyor line to each of the first workpiece manufacturing machine and each of the second workpiece manufacturing machine according to the real-time quantity information.

15. The method for transporting logistics according to claim 14, wherein: The electrical control module has a first control mode, a second control mode, and a third control mode. The first control mode serves as the initial default mode. The empty tray allocation step includes: When the real-time number of real pallets on the first real pallet conveying line and the real-time number of real pallets on the second real pallet conveying line are respectively within the first set range and the second set range, or are respectively less than the lower limit value of the first set range and the lower limit value of the second set range, When the lower limit value of the setting range is greater than the upper limit value of the first setting range or the upper limit value of the second setting range, the electrical control module adopts the first control mode; When the real-time number of the real pallets on the first real pallet conveyor line is less than the lower limit of the first set range, and the real-time number of the real pallets on the second real pallet conveyor line is greater than the upper limit of the second set range, the electrical control module adopts the second control mode; When the real-time number of real pallets on the first real pallet conveyor line is greater than the upper limit value of the first setting range, and the real-time number of real pallets on the second real pallet conveyor line is less than the lower limit value of the second setting range, the electrical control module adopts the third control mode.

16. The method for transporting logistics according to claim 15, wherein: In the first control mode, the electrical control module controls the empty pallet conveyor line to sequentially convey a set number of empty pallets from each of the first to the last workpiece manufacturing machines. After all workpiece manufacturing machines have met the set number of empty pallets, an empty pallet is added in sequence from the first to the last workpiece manufacturing machine until the number of empty pallets cached by each workpiece manufacturing machine reaches the maximum allowable cache capacity. In the second control mode, the electrical control module controls the empty pallet conveyor line to preferentially input empty pallets to the first workpiece manufacturing machine, maintains the number of empty pallets buffered by each first workpiece manufacturing machine at a maximum allowable buffer capacity, and conveys at least the set number of empty pallets to the second workpiece manufacturing machine and temporarily stores these empty pallets outside the entrance of the second workpiece manufacturing machine; In the third control mode, the electrical control module controls the empty pallet conveyor line to preferentially input empty pallets to the second workpiece manufacturing machine, maintains the number of empty pallets buffered by each second workpiece manufacturing machine at a maximum allowable buffer capacity, and conveys at least the set number of empty pallets to the first workpiece manufacturing machine and temporarily stores these empty pallets outside the entrance of the first workpiece manufacturing machine; The set quantity includes 3.

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