Battery cell transmission system

Abstract

The embodiment of the utility model provides a battery cell conveying system. The battery cell conveying system comprises a base, an incoming material conveying line, a tray conveying line and a mechanical arm. The incoming material conveying line is arranged on the base, the incoming material conveying line comprises a feeding unit and a weighing unit, the feeding unit is used for conveying a battery cell of a previous procedure to the weighing unit, and the weighing unit is used for weighing the battery cell. The tray conveying line is arranged on the base and used for bearing and conveying trays. And the manipulator is arranged on the base and is used for transferring the weighed qualified battery cells into the tray for tray assembling. According to the transmission system, the integration level of the transmission system is improved, the installation and debugging time of the transmission system can be shortened, the matching precision can be improved, the labor cost is saved, and the production efficiency is improved. And the battery cells can be weighed through the weighing unit firstly, and then the weighed qualified battery cells are transferred into the tray through the manipulator for tray assembling, so that the consistency of the battery cells is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery production equipment, and in particular to a battery cell transmission system. Background Art

[0002] This section is intended to provide a background or context to the embodiments of the present application. No description herein is admitted to be prior art by virtue of its inclusion in this section.

[0003] In the related art, the battery transmission system is composed of multiple independent stand-alone devices. The number of stand-alone devices is large, and the stand-alone devices need to be re-positioned when they arrive at the site, which results in long installation and debugging time and affects the coordination accuracy. Utility Model Content

[0004] In view of this, the embodiments of the present application hope to provide a battery cell transmission system that can reduce installation and debugging time and improve matching accuracy.

[0005] To achieve the above object, an embodiment of the present application provides a battery cell transmission system, including:

[0006] Base;

[0007] An incoming material conveying line is arranged on the base, the incoming material conveying line comprises a loading unit and a weighing unit, the loading unit is used to convey the battery cells of the previous process to the weighing unit, and the weighing unit is used to weigh the battery cells;

[0008] A pallet conveyor line disposed on the base, for carrying and conveying pallets;

[0009] The manipulator disposed on the base is used to transfer the qualified battery cells after weighing to the tray for assembly.

[0010] The transmission system of the battery cell of the embodiment of the present application includes a base, a material conveying line, a pallet conveying line and a manipulator. The material conveying line, the pallet conveying line and the manipulator are all arranged on the base, that is, the workstations such as the material conveying line, the pallet conveying line and the manipulator are integrated on the base, thereby improving the integration of the transmission system. In this way, the installation and commissioning time of the transmission system can be reduced and the matching accuracy can be improved, labor costs can be saved, and production efficiency can be improved. In addition, the material conveying line can further meet the requirements of the battery production process by arranging a weighing unit, and the weighing unit is used to weigh the battery cells, which further improves the integration of the transmission system, reduces parts, thereby reducing costs and improving space compactness. Furthermore, the battery cells can be weighed by the weighing unit first, and then the qualified battery cells after weighing can be transferred to the pallet for assembly by the manipulator, thereby improving the consistency of the battery cells.

[0011] In some embodiments, the incoming material conveying line further includes a positioning unit, the loading unit, the weighing unit and the positioning unit are arranged in sequence along the conveying direction of the battery cell, and the positioning unit is used to position the battery cell after weighing.

[0012] Here, the loading unit, the weighing unit and the positioning unit are arranged in sequence along the conveying direction of the battery cells. In other words, the battery cells of the previous process flow into the loading unit, the loading unit conveys the battery cells to the weighing unit for weighing, the weighing unit conveys the weighed battery cells to the positioning unit, and the positioning unit positions the battery cells, which is beneficial for the robot to assemble the battery cells and improve the grasping accuracy of the robot, thereby improving production efficiency.

[0013] In some embodiments, the transmission system further includes a buffer station disposed on the base, and the robot can transfer the unqualified battery cells after weighing to the buffer station.

[0014] Here, the weighing unit is used to weigh the battery cells to confirm whether the battery cells are qualified, thereby improving the consistency of the battery cells. By setting up a cache station, the cache station is used to store unqualified products (NG products), which is conducive to classifying and storing the battery cells and improving the production efficiency and consistency of the battery cells.

[0015] In some embodiments, the incoming material conveying line, the pallet conveying line and the buffer station are arranged around the robot.

[0016] Here, by surrounding the robot with incoming material conveyor lines, pallet conveyor lines and buffer stations, it is convenient for the robot to transfer qualified battery cells after weighing to the pallet for assembly, and transfer unqualified battery cells after weighing to the buffer station, thereby improving the convenience of the robot in gripping battery cells and further improving the compactness of the transmission system.

[0017] In some embodiments, the weighing unit comprises:

[0018] Mounting bracket;

[0019] A conveying module disposed on the mounting bracket, used for conveying and carrying the battery cell;

[0020] A weighing module is arranged on the mounting bracket and is located below the conveying module;

[0021] Among them, the battery cell includes a conveying state and a weighing state. When the battery cell is in the conveying state, the weight of the battery cell is borne by the conveying module; when the battery cell is in the weighing state, the weight of the battery cell is borne by the weighing module, and the weighing module is used to weigh the battery cell; the weighing module and the conveying module move closer to or farther away from each other to switch the battery cell between the weighing state and the conveying state.

[0022] Here, when the battery cell is in the conveying state, the weight of the battery cell is borne by the conveying module, and the conveying module conveys the battery cell to the weighing module. When the battery cell is in the weighing position, the weighing module and the conveying module are controlled to approach each other so that the battery cell is switched from the conveying state to the weighing state. At this time, the weight of the battery cell is borne on the weighing module. The weighing module is used to weigh the battery cell. For example, the battery cell can be weighed to determine whether the weight of the electrolyte injected into the battery cell meets the standard. After weighing, the weighing module and the conveying module are controlled to move away from each other so that the battery cell is switched from the weighing state to the conveying state, and then the weighed battery cell is conveyed to the positioning unit to position the weighed battery cell. The manipulator transfers the qualified battery cells after weighing to the tray for assembly, and transfers the unqualified battery cells after weighing to the cache station.

[0023] In some embodiments, the conveying module includes a conveying belt. When the battery cell is in the conveying state, the battery cell is supported on the conveying belt. When the battery cell is in the weighing state, the battery cell is spaced apart from the conveying belt.

[0024] Here, the weighing module and the conveying module are controlled to move closer or farther away from each other so that the weight of the battery cell is borne on the weighing module or the conveyor belt. When the weight of the battery cell is borne on the weighing module, the battery cell and the conveyor belt are spaced apart to enable the weighing module to weigh the battery cell.

[0025] In some embodiments, the conveyor belt includes a plurality of rollers, each of which is arranged at intervals along the conveying direction of the conveyor belt, and the battery cell is supported on the rollers;

[0026] The weighing module comprises a weighing assembly and a weighing bracket carried by the weighing assembly. The weighing module and the conveying module are brought close to each other so that at least part of the weighing bracket abuts against the bottom of the battery cell through the gap between adjacent rollers.

[0027] Here, the weighing module and the conveying module are controlled to approach each other so that at least part of the weighing bracket abuts against the bottom of the battery cell through the gap between adjacent rollers, that is, the weight of the battery cell is carried on the weighing component through the weighing bracket, and the battery cell is switched from the conveying state to the weighing state, so that the weighing module weighs the battery cell. After the weighing is completed, the weighing module and the conveying module are controlled to move away from each other so that the weighing bracket retracts through the gap between adjacent rollers and separates from the battery cell. At this time, the weight of the battery cell is carried on the conveyor belt, and the battery cell is switched from the weighing state to the conveying state. The weighing module and the conveying module have simple structures and reliable cooperation.

[0028] In some embodiments, the weighing bracket includes a connecting frame and a plurality of supporting parts, the connecting frame is connected to the weighing assembly, and the plurality of supporting parts are arranged on the connecting frame at intervals along the conveying direction of the conveyor belt and extend toward the conveyor belt.

[0029] Here, a plurality of support parts are arranged at intervals on the connecting frame along the conveying direction of the conveyor belt, that is, the battery cells can be lifted simultaneously by the plurality of support parts, thereby improving the reliability of lifting the battery cells by the weighing module and thus improving the reliability of weighing the battery cells.

[0030] In some embodiments, the weighing unit further includes a driving member, and the driving member is used to drive the weighing module to approach or move away from the conveying module, or the driving member is used to drive the conveying module to approach or move away from the weighing module.

[0031] Here, a driving member is provided to cooperate with the weighing module, that is, the driving member is used to drive the weighing module to approach or move away from the conveying module, so that the battery cell is switched between a weighing state and a conveying state.

[0032] Here, the driving member is arranged to cooperate with the conveying module, that is, the driving member is used to drive the conveying module to approach or move away from the weighing module, so that the battery cell is switched between the weighing state and the conveying state.

[0033] In some embodiments, the weighing unit further includes a guide member for guiding the movement of the weighing module or the conveying module along its height direction.

[0034] Here, the specific type of the guide member is not limited. The guide member is, for example, a guide column. The weighing module or the conveying module is provided with corresponding guide holes. The guide column cooperates with the guide hole to improve the reliability of the movement of the weighing module or the conveying module along its height direction, thereby improving the reliability of the process of switching the battery cell between the weighing state and the conveying state.

[0035] In some embodiments, the base includes a square frame and a cover, and the cover is disposed on a surface of the square frame.

[0036] Here, the base is formed by welding the square frame as a whole, and the cover is arranged on the surface of the square frame, that is, the surface of the square frame is covered by the cover. In this way, while the base has sufficient strength, it is also beneficial to connect the future material conveyor line, pallet conveyor line, cache station and other stations to the base.

[0037] In some embodiments, the base further includes a reinforcing plate disposed on the cover, and the reinforcing plate is disposed at least in the area where the incoming material conveying line, the robot arm, and the pallet conveying line are disposed.

[0038] Here, a reinforcing plate is provided in at least the area where the material conveying line, the robot and the pallet conveying line are provided to strengthen the structural strength of the area where the material conveying line, the robot and the pallet conveying line are provided, thereby improving the structural strength of the base and further improving the reliability of the transmission system.

[0039] In some embodiments, the transmission system further includes a safety fence, which is fixed to the base and encloses an installation space, and the incoming material conveyor line, the robot and the pallet conveyor line are all arranged in the installation space.

[0040] Here, by setting up a safety fence, and by setting the incoming material conveyor line, the robot and the pallet conveyor line in the installation space formed by the safety fence, the safety of the production process is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic structural diagram of a transmission system for a battery cell according to an embodiment of the present application;

[0042] Figure 2 for Figure 1 The structural diagram of the transmission system of the safety guardrail is omitted;

[0043] Figure 3 This is a schematic structural diagram of an incoming material conveying line according to an embodiment of the present application;

[0044] Figure 4 This is a schematic diagram of the structure of a manipulator according to an embodiment of the present application;

[0045] Figure 5 This is a schematic diagram of the structure of a cache station according to an embodiment of the present application;

[0046] Figure 6 This is a schematic diagram of the structure of a pallet conveyor line according to an embodiment of the present application;

[0047] Figure 7 This is a schematic diagram of the structure of a weighing unit according to an embodiment of the present application;

[0048] Figure 8 for Figure 7An exploded view of the weighing cell is shown;

[0049] Fig. 9 This is a schematic structural diagram of a weighing module according to an embodiment of the present application.

[0050] Description of Reference Numerals

[0051] 1. Base; 2. Incoming material conveyor line; 21. Loading unit; 22. Weighing unit; 221. Mounting bracket; 222. Conveying module; 2221. Conveyor belt; 22211. Roller; 223. Weighing module; 2231. Weighing assembly; 2232. Weighing bracket; 22321. Connecting frame; 22322. Support part; 224. Driving part; 225. Guide part; 23. Positioning unit; 3. Pallet conveyor line; 4. Cache station; 5. Robot; 51. Gripper; 6. Safety guardrail; 10. Transmission system; 20. Battery cell; 30. Pallet. DETAILED DESCRIPTION

[0052] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions.

[0054] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0055] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0056] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0057] In the description of the embodiments of the present application, the orientation or position relationship indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "circumferential", "height direction", "first direction", and "second direction" are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0058] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0059] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and may be direct contact or contact through an intermediate medium layer. It may be contact with essentially no interaction force between the two contacting parties, or it may be contact with interaction force between the two contacting parties.

[0060] With the development of clean energy, more and more devices use electric energy as driving energy, and then power batteries that can store more electric energy and can be charged and discharged repeatedly are developing rapidly, such as lithium-ion batteries. Among them, power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as aerospace and other fields.

[0061] With the country's vigorous promotion of new energy vehicles, new energy vehicles have ushered in a great opportunity for development. The safety and stability of automobiles have always been people's greatest concern. Therefore, improving the safety of new energy vehicles will be one of the important factors that determine whether new energy vehicles can be quickly popularized. Battery modules are the main components of the battery pack of new energy vehicles. Improving the safety of battery modules is an important way to improve the safety of new energy vehicles.

[0062] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0063] In the present application, the battery cell may include a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery or a magnesium-ion battery, etc., which is not limited in the embodiments of the present application. The battery cell may be cylindrical, rectangular or in other shapes, etc., which is not limited in the embodiments of the present application.

[0064] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as the positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode collector. The negative electrode collector not coated with the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. The negative electrode collector not coated with the negative electrode active material layer serves as the negative electrode tab. The negative electrode current collector may be made of copper, and the negative electrode active material may be carbon or silicon. In order to ensure that a large current can pass without melting, the positive electrode tabs are multiple and stacked together, and the negative electrode tabs are multiple and stacked together. The material of the separator may be PP (polypropylene) or PE (polyethylene).

[0065] The battery cell also includes an insulating film and a shell. The insulating film is coated on the outside of the electrode assembly, and the shell encapsulates the electrode assembly coated with the insulating film to form a battery cell. The insulating film can be a Mylar film, and the shell can be an aluminum shell. After the electrode assembly is wound and formed, the Mylar film and the shell are encapsulated through the Mylar wrapping process and the shelling process. Among them, the Mylar film plays the role of sealing and protecting the electrode assembly, and the Mylar film can effectively insulate the electrode assembly and the shell from each other to avoid internal short circuits in the battery cell. The shell plays a protective role.

[0066] The injection process is an important step in the battery manufacturing process, that is, injecting electrolyte into the battery cell. The injection accuracy is directly related to the cycle performance, safety performance, consistency, etc. of lithium ions. For example, it is necessary to stand for a period of time after the injection process.

[0067] In the related art, the battery transmission system is composed of multiple independent stand-alone devices. The number of stand-alone devices is large, and the stand-alone devices need to be re-positioned when they arrive at the site, which results in long installation and debugging time and affects the coordination accuracy.

[0068] In order to reduce the installation and commissioning time of the battery transmission system 10 and improve the matching accuracy, please refer to Figures 1 to 9 The embodiment of the present application provides a transmission system 10 for a battery cell 20, and the transmission system 10 includes a base 1, an incoming material conveying line 2, a tray conveying line 3, and a manipulator 5. The incoming material conveying line 2 is arranged on the base 1, and the incoming material conveying line 2 includes a loading unit 21 and a weighing unit 22. The loading unit 21 is used to convey the battery cell 20 of the previous process to the weighing unit 22, and the weighing unit 22 is used to weigh the battery cell 20. The tray conveying line 3 is arranged on the base 1, and is used to carry and convey the tray 30. The manipulator 5 is arranged on the base 1, and is used to transfer the qualified battery cell 20 after weighing to the tray 30 for assembly.

[0069] It should be noted that the transmission system 10 provided in the embodiment of the present application can be used in different usage scenarios, and no specific limitations are made here.

[0070] Exemplarily, the transmission system 10 provided in the embodiment of the present application is used after the liquid injection process, for example, after the liquid injection process, it needs to be left to stand for a period of time, that is, the battery cell 20 flows into the loading unit 21 after the liquid injection process, and then is transported to the weighing unit 22, the weighing unit 22 weighs the battery cell 20, and the manipulator 5 transfers the weighed qualified battery cell 20 to the tray 30 for assembly, and then the tray conveyor line 3 transports the tray 30 after the battery cell 20 is assembled to the next process. Among them, the next process is, for example, a standing process.

[0071] The base 1 is used to carry and fix the material conveying line 2, pallet conveying line 3, robot 5 and other workstations of the transmission system 10, that is, to provide a fixed position for the material conveying line 2, pallet conveying line 3, robot 5 and other workstations.

[0072] Here, the specific shape of the base 1 is not limited, for example, it can be circular, polygonal, elliptical, etc.

[0073] In the related art, the battery transmission system is composed of multiple independent stand-alone devices. The stand-alone devices need to be repositioned when they arrive at the site, and additional chemical bolts are required to fix the independent stand-alone devices on site, which results in high costs and low debugging efficiency.

[0074] In the present application, a base 1 is provided, and workstations such as a material conveyor line 2, a pallet conveyor line 3 and a manipulator 5 are integrated on the base 1. While improving the integration of the transmission system 10, no additional chemical bolt connection and fixation are required, thereby reducing costs and improving debugging efficiency.

[0075] The loading unit 21 is used to transport the battery cells 20 of the previous process to the weighing unit 22. For example, the loading unit 21 is connected to the unloading pull belt of the previous process so that the battery cells 20 of the previous process are transported to the loading unit 21, and then transported to the weighing unit 22 for weighing.

[0076] It should be noted that the specific type of the previous process is not limited here. For example, the previous process is a liquid injection process.

[0077] The weighing unit 22 is used to weigh the battery cell 20 , so as to confirm whether the battery cell 20 is qualified, thereby improving the consistency of the battery cell 20 .

[0078] The specific structure of the manipulator 5 is not limited here. For example, please refer to Figure 4 The manipulator 5 includes a gripper 51. The gripper 51 of the manipulator 5 has high flexibility in gripping the battery cell 20 and is compatible with gripping the battery cell 20 in a variety of scenarios to meet the requirements of loading and unloading functions.

[0079] See also Figure 3 and Figure 6 The tray conveyor line 3 is used to carry and convey the tray 30. Then, the tray conveyor line 3 conveys the tray 30 after the battery cells 20 are assembled to the next process. The next process is, for example, a static process.

[0080] It should be noted that the number of pallet conveyor lines 3 is not limited. It can be one or more (see Figure 2 ).

[0081] The multiple mentioned in the embodiments of the present application refers to a number of two or more.

[0082] The transmission system 10 of the battery cell 20 of the embodiment of the present application includes a base 1, a material conveying line 2, a tray conveying line 3 and a manipulator 5. The material conveying line 2, the tray conveying line 3 and the manipulator 5 are all arranged on the base 1, that is, the material conveying line 2, the tray conveying line 3 and the manipulator 5 are integrated on the base 1, so as to improve the integration of the transmission system 10. In this way, the installation and commissioning time of the transmission system 10 can be reduced and the matching accuracy can be improved, the labor cost can be saved, and the production efficiency can be improved. In addition, the material conveying line 2 is provided with a weighing unit 22, and the weighing unit 22 is used to weigh the battery cell 20, which can further meet the requirements of the battery production process, further improve the integration of the transmission system 10, reduce the parts, thereby reducing the cost and improving the space compactness. Furthermore, the battery cell 20 can be weighed by the weighing unit 22 first, and then the qualified battery cell 20 after weighing can be transferred to the tray 30 for assembly by the manipulator 5, thereby improving the consistency of the battery cell 20.

[0083] In some embodiments, see Figure 1 , Figure 2 and Figure 5 The transmission system 10 also includes a cache station 4 arranged on the base 1, and the manipulator 5 can transfer the unqualified battery cells 20 after weighing to the cache station 4.

[0084] The buffer station 4 is, for example, an NG buffer station 4 , which is used to store unqualified products (NG products), and is helpful for sorting out unqualified battery cells 20 .

[0085] The robot 5 is used to transfer the qualified battery cells 20 after weighing to the tray 30 for assembly, and to transfer the unqualified battery cells 20 after weighing to the buffer station 4.

[0086] Here, the weighing unit 22 is used to weigh the battery cell 20 to confirm whether the battery cell 20 is qualified, thereby improving the consistency of the battery cell 20. By setting up a cache station 4, the cache station 4 is used to store unqualified products (NG products), which is conducive to classifying and storing the battery cells 20 and improving the production efficiency and consistency of the battery cells 20.

[0087] In some embodiments, see Figures 1 to 3 The incoming material conveying line 2 also includes a positioning unit 23. The feeding unit 21, the weighing unit 22 and the positioning unit 23 are arranged in sequence along the conveying direction of the battery cell 20. The positioning unit 23 is used to position the qualified battery cell 20 after weighing.

[0088] Here, the loading unit 21, the weighing unit 22 and the positioning unit 23 are arranged in sequence along the conveying direction of the battery cells 20. In other words, the battery cells 20 of the previous process flow into the loading unit 21, the loading unit 21 conveys the battery cells 20 to the weighing unit 22 for weighing, the weighing unit 22 conveys the weighed battery cells 20 to the positioning unit 23, and the positioning unit 23 positions the battery cells 20, which is beneficial for the robot 5 to group the battery cells 20 and improve the grasping accuracy of the robot 5, thereby improving production efficiency.

[0089] It should be noted that the specific location where the robot 5 grabs the unqualified products is not limited here. For example, the unqualified battery cells 20 can be transferred to the cache station 4 at the weighing unit 22, or the unqualified battery cells 20 can be transferred to the cache station 4 at the positioning unit 23.

[0090] In some embodiments, see Figure 1 to Figure 2 The incoming material conveying line 2, the pallet conveying line 3 and the buffer station 4 are arranged around the robot 5.

[0091] Exemplarily, the manipulator 5 is arranged in the middle position of the base 1, and the incoming material conveyor line 2, the pallet conveyor line 3 and the cache station 4 are arranged around the manipulator 5, which is conducive to the manipulator 5 cooperating with the incoming material conveyor line 2, the pallet conveyor line 3 and the cache station 4 at the same time.

[0092] Here, by surrounding the incoming material conveyor line 2, the pallet conveyor line 3 and the buffer station 4 on the side of the manipulator 5, it is convenient for the manipulator 5 to transfer the qualified battery cells 20 after weighing to the pallet 30 for assembly, and transfer the unqualified battery cells 20 after weighing to the buffer station 4, thereby improving the convenience of the manipulator 5 in gripping the battery cells 20 and further improving the compactness of the transmission system 10.

[0093] In some embodiments, see Figures 7 to 9 The weighing unit 22 includes a mounting bracket 221, a conveying module 222 and a weighing module 223. The conveying module 222 is arranged on the mounting bracket 221, and is used to convey and carry the battery cell 20. The weighing module 223 is arranged on the mounting bracket 221, and is located below the conveying module 222. Among them, the battery cell 20 includes a conveying state and a weighing state. When the battery cell 20 is in the conveying state, the weight of the battery cell 20 is borne by the conveying module 222. When the battery cell 20 is in the weighing state, the weight of the battery cell 20 is borne by the weighing module 223, and the weighing module 223 is used to weigh the battery cell 20. The weighing module 223 and the conveying module 222 are moved closer to or farther away from each other to switch the battery cell 20 between the weighing state and the conveying state.

[0094] The specific structure of the mounting bracket 221 is not limited here. The mounting bracket 221 is a main supporting structure for supporting and mounting the conveying module 222 and the weighing module 223 .

[0095] The weighing module 223 is disposed on the mounting bracket 221, corresponding to the battery cell 20 one by one, and is used to weigh the battery cell 20. That is, the weighing module 223 can weigh the battery cell 20 in real time to determine whether the amount of electrolyte injected into the battery cell 20 meets the requirement.

[0096] The conveying module 222 is used to convey and carry the batteries.

[0097] It should be noted that the number of the battery cells 20 is not limited here, for example, it can be one or more.

[0098] Exemplarily, there are multiple battery cells 20 , and when the battery cells 20 are in a conveying state, the multiple battery cells 20 are carried on the conveying module 222 .

[0099] When the battery cell 20 is in a weighing state, the weight of the battery cell 20 is borne on the weighing module 223 . At this time, the battery cell 20 and the conveying module 222 are spaced apart.

[0100] Here, when the battery cell 20 is in a conveying state, the weight of the battery cell 20 is borne on the conveying module 222, and the conveying module 222 conveys the battery cell 20 to the weighing module 223. When the battery cell 20 is in a weighing position, the weighing module 223 and the conveying module 222 are controlled to approach each other so that the battery cell 20 is switched from a conveying state to a weighing state. At this time, the weight of the battery cell 20 is borne on the weighing module 223. The weighing module 223 is used to weigh the battery cell 20. For example, by weighing the battery cell 20, it is possible to obtain whether the weight of the electrolyte injected into the battery cell 20 meets the standard. After weighing is completed, the weighing module 223 and the conveying module 222 are controlled to move away from each other so that the battery cell 20 is switched from the weighing state to the conveying state, and then the weighed battery cell 20 is conveyed to the positioning unit 23 to position the weighed battery cell 20. The robot 5 transfers the qualified battery cell 20 after weighing to the tray 30 for assembly, and transfers the unqualified battery cell 20 after weighing to the cache station 4.

[0101] It should be noted that the manner in which the battery cell 20 switches between the weighing state and the conveying state is not limited herein.

[0102] In some embodiments, see Figures 7 to 9 The conveying module 222 includes a conveying belt 2221. When the battery cell 20 is in a conveying state, the battery cell 20 is supported on the conveying belt 2221. When the battery cell 20 is in a weighing state, the battery cell 20 and the conveying belt 2221 are spaced apart.

[0103] When the battery cell 20 is in a conveying state, the battery cell 20 is supported on the conveyor belt 2221 , and the battery cell 20 is conveyed by the conveyor belt 2221 .

[0104] When the battery cell 20 is in a weighing state, the battery cell 20 and the conveyor belt 2221 are spaced apart so that the weight of the battery cell 20 is carried on the weighing module 223. The weighing module 223 is used to weigh the battery cell 20.

[0105] Here, the weighing module 223 and the conveying module 222 are controlled to move closer to or farther from each other so that the weight of the battery cell 20 is borne on the weighing module 223 or the conveyor belt 2221. When the weight of the battery cell 20 is borne on the weighing module 223, the battery cell 20 and the conveyor belt 2221 are spaced apart so that the weighing module 223 can weigh the battery cell 20.

[0106] In some embodiments, see Figures 7 to 9 The conveyor belt 2221 includes a plurality of rollers 22211, each roller 22211 is arranged at intervals along the conveying direction of the conveyor belt 2221, and the battery cell 20 is supported on the rollers 22211. The weighing module 223 includes a weighing assembly 2231 and a weighing bracket 2232 carried by the weighing assembly 2231. The weighing module 223 and the conveyor module 222 are close to each other so that at least part of the weighing bracket 2232 abuts against the bottom of the battery cell 20 through the gap between adjacent rollers 22211.

[0107] The conveyor belt 2221 includes a plurality of rollers 22211 , and the rollers 22211 are arranged at intervals along the conveying direction. The rollers 22211 rotate in the same direction to drive the battery cells 20 supported on the rollers 22211 to move along the conveying direction.

[0108] The weighing module 223 includes a weighing component 2231 and a weighing bracket 2232 carried by the weighing component 2231 . The weighing bracket 2232 is used to abut against the battery cell 20 , so that the weighing component 2231 can weigh the battery cell 20 .

[0109] Here, the number of weighing modules 223 and battery cells 20 is not limited. For example, in a direction perpendicular to the conveying direction of the conveyor belt 2221, the conveying module 222 is provided with a plurality of conveying channels, each of which can convey the battery cells 20 at the same time, and each conveying channel corresponds to a weighing module 223.

[0110] For example, see Figures 7 and 8The conveying module 222 also includes a guide rod, which is extended along the conveying direction of the conveyor belt 2221. A conveying channel is defined between two adjacent guide rods. The setting of the guide rod can improve the stability of the battery cell 20. For example, the conveying module 222 can improve the stability of the battery cell 20 during the conveying process, so that the weighing module 223 can improve the stability of the battery cell 20 during the weighing process.

[0111] Here, the weighing module 223 and the conveying module 222 are controlled to approach each other so that at least part of the weighing bracket 2232 abuts against the bottom of the battery cell 20 through the gap between the adjacent rollers 22211, that is, the weight of the battery cell 20 is carried on the weighing component 2231 through the weighing bracket 2232, and the battery cell 20 is switched from the conveying state to the weighing state, so that the weighing module 223 weighs the battery cell 20. After the weighing is completed, the weighing module 223 and the conveying module 222 are controlled to move away from each other so that the weighing bracket 2232 retracts through the gap between the adjacent rollers 22211 and separates from the battery cell 20. At this time, the weight of the battery cell 20 is carried on the conveyor belt 2221, and the battery cell 20 is switched from the weighing state to the conveying state. The weighing module 223 and the conveying module 222 have simple structures and reliable matching.

[0112] In some embodiments, see Figures 7 to 9 The weighing bracket 2232 includes a connecting frame 22321 and a plurality of supporting parts 22322. The connecting frame 22321 is connected to the weighing assembly 2231. The plurality of supporting parts 22322 are arranged on the connecting frame 22321 at intervals along the conveying direction of the conveyor belt 2221 and extend toward the conveyor belt 2221.

[0113] The specific structural form of the connecting frame 22321 is not limited here, for example, it is a gantry shape.

[0114] The connecting frame 22321 is used to connect the weighing assembly 2231 and the supporting portion 22322 . The supporting portion 22322 extends toward the conveyor belt 2221 and is used to lift the battery cell 20 , so that the weight of the battery cell 20 is borne on the weighing assembly 2231 .

[0115] Exemplarily, the battery cell 20 is, for example, a square battery cell 20, and the length direction of the square battery cell 20 is arranged along the conveying direction of the conveyor belt 2221, which is beneficial to improving the reliability of conveying the battery cell 20. A plurality of support parts 22322 are arranged at intervals on the connecting frame 22321 along the conveying direction of the conveyor belt 2221, that is, the battery cell 20 can be lifted simultaneously by a plurality of support parts 22322.

[0116] Here, multiple support parts 22322 are arranged at intervals on the connecting frame 22321 along the conveying direction of the conveyor belt 2221, that is, the battery cells 20 can be lifted simultaneously by multiple support parts 22322, thereby improving the reliability of the weighing module 223 lifting the battery cells 20 and thus improving the reliability of weighing the battery cells 20.

[0117] It should be noted that the specific manner in which the weighing module 223 and the conveying module 222 are brought closer to or farther from each other is not limited herein.

[0118] In some embodiments, the weighing unit 22 further includes a driving member 224 , and the driving member 224 is used to drive the weighing module 223 to approach or move away from the conveying module 222 .

[0119] The specific type of the driving member 224 is not limited here. For example, the driving member 224 is, for example, a cylinder, a motor, or a linear module.

[0120] Here, the driving member 224 is provided to cooperate with the weighing module 223 , that is, the driving member 224 is used to drive the weighing module 223 to approach or move away from the conveying module 222 , so that the battery cell 20 is switched between the weighing state and the conveying state.

[0121] For other implementations, see Figures 7 to 9 The driving member 224 is used to drive the conveying module 222 to approach or move away from the weighing module 223.

[0122] Here, the driving member 224 is provided to cooperate with the conveying module 222 , that is, the driving member 224 is used to drive the conveying module 222 to approach or move away from the weighing module 223 , so that the battery cell 20 is switched between the weighing state and the conveying state.

[0123] In some embodiments, see Figures 7 to 9 The weighing unit 22 further includes a guide member 225 for guiding the movement of the weighing module 223 or the conveying module 222 along its height direction.

[0124] Here, the specific type of the guide member 225 is not limited. The guide member 225 is, for example, a guide column. The weighing module 223 or the conveying module 222 is provided with a corresponding guide hole. The guide column cooperates with the guide hole to improve the reliability of the movement of the weighing module 223 or the conveying module 222 along its height direction, thereby improving the reliability of the process of switching the battery cell 20 between the weighing state and the conveying state.

[0125] In some embodiments, the base 1 includes a square frame and a cover, and the cover is disposed on the surface of the square frame.

[0126] The square frame constitutes the overall frame of the base 1, and the cover is arranged on the surface of the overall frame to increase the installation area.

[0127] The specific material of the covering part is not limited here, for example, it can be a sheet metal part.

[0128] The connection method between the overall frame and the cover is not limited here. For example, the cover is welded to the overall frame so that the cover has sufficient strength.

[0129] Here, the base 1 is formed by welding a square frame as a whole, and a cover is arranged on the surface of the square frame, that is, the surface of the square frame is covered by the cover. In this way, while the base 1 has sufficient strength, it is also beneficial to connect the future material conveyor line 2, the pallet conveyor line 3 and the cache station 4 and other stations to the base 1.

[0130] In some embodiments, the base 1 further comprises a reinforcing plate disposed on the cover. The reinforcing plate is disposed at least in the area where the incoming material conveying line 2, the robot 5 and the pallet conveying line 3 are disposed.

[0131] The specific material of the reinforcing plate is not limited here, for example, it can be a sheet metal part, and is used to strengthen the structural strength of the base 1 .

[0132] The reinforcing plate is provided in at least the area where the incoming material conveyor line 2, the robot 5 and the pallet conveyor line 3 are provided. This means that the reinforcing plate can be provided only in the area where the incoming material conveyor line 2, the robot 5 and the pallet conveyor line 3 are provided, or the reinforcing plate can be provided in the entire surface area of ​​the base 1.

[0133] Here, a reinforcing plate is provided in at least the area where the incoming material conveyor line 2, the robot 5 and the pallet conveyor line 3 are provided, so as to strengthen the structural strength of the area where the incoming material conveyor line, the robot 5 and the pallet conveyor line 3 are provided, thereby improving the structural strength of the base 1 and further improving the reliability of the transmission system 10.

[0134] In some embodiments, see Figure 1 to Figure 2 The transmission system 10 further includes a safety fence 6. The safety fence 6 is fixed on the base 1 and encloses an installation space. The incoming material conveying line 2, the manipulator 5 and the pallet conveying line 3 are all arranged in the installation space.

[0135] The specific structure of the safety fence 6 is not limited here, for example, it can be a metal mesh.

[0136] The specific structure of the safety guardrail 6 is not limited here. For example, the safety guardrail 6 can be fixed to the base 1 composed of the square frame by bolts. Instead of fixing by chemical bolts, the installation difficulty of the safety guardrail 6 is reduced, and labor costs are saved.

[0137] Here, by setting up a safety fence 6, and by setting the incoming material conveyor line 2, the robot 5 and the pallet conveyor line 3 in an installation space formed by the safety fence 6, the safety of the production process is improved.

[0138] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0139] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A battery cell transmission system, characterized in that: include: Base; An incoming material conveying line is arranged on the base, the incoming material conveying line comprises a loading unit and a weighing unit, the loading unit is used to convey the battery cells of the previous process to the weighing unit, and the weighing unit is used to weigh the battery cells; A pallet conveyor line disposed on the base, for carrying and conveying pallets; The manipulator disposed on the base is used to transfer the qualified battery cells after weighing to the tray for assembly.

2. The transmission system according to claim 1, characterized in that: The incoming material conveying line further comprises a positioning unit. The feeding unit, the weighing unit and the positioning unit are arranged in sequence along the conveying direction of the battery cell. The positioning unit is used to position the battery cell after weighing.

3. The transmission system according to claim 1, characterized in that: The transmission system also includes a buffer station arranged on the base, and the robot can transfer the unqualified battery cells after weighing to the buffer station.

4. The transmission system according to claim 3, characterized in that: The incoming material conveying line, the pallet conveying line and the buffer station are arranged around the robot.

5. The transmission system according to any one of claims 1 to 4, characterized in that: The weighing unit comprises: Mounting bracket; A conveying module disposed on the mounting bracket, used for conveying and carrying the battery cell; A weighing module is arranged on the mounting bracket and is located below the conveying module; Among them, the battery cell includes a conveying state and a weighing state. When the battery cell is in the conveying state, the weight of the battery cell is borne by the conveying module; when the battery cell is in the weighing state, the weight of the battery cell is borne by the weighing module, and the weighing module is used to weigh the battery cell; the weighing module and the conveying module move closer to or farther away from each other to switch the battery cell between the weighing state and the conveying state.

6. The transmission system according to claim 5, characterized in that: The conveying module comprises a conveying belt. When the battery cell is in the conveying state, the battery cell is supported on the conveying belt. When the battery cell is in the weighing state, the battery cell is spaced apart from the conveying belt.

7. The transmission system according to claim 6, characterized in that: The conveyor belt comprises a plurality of rollers, each of which is arranged at intervals along the conveying direction of the conveyor belt, and the battery cell is supported on the rollers; The weighing module comprises a weighing assembly and a weighing bracket carried by the weighing assembly. The weighing module and the conveying module are brought close to each other so that at least part of the weighing bracket abuts against the bottom of the battery cell through the gap between adjacent rollers.

8. The transmission system according to claim 7, characterized in that: The weighing bracket comprises a connecting frame and a plurality of supporting parts, wherein the connecting frame is connected to the weighing assembly, and the plurality of supporting parts are arranged on the connecting frame at intervals along the conveying direction of the conveyor belt and extend toward the conveyor belt.

9. The transmission system according to claim 5, characterized in that: The weighing unit further includes a driving member, and the driving member is used to drive the weighing module to approach or move away from the conveying module, or the driving member is used to drive the conveying module to approach or move away from the weighing module.

10. The transmission system according to claim 9, characterized in that: The weighing unit further comprises a guide member for guiding the movement of the weighing module or the conveying module along its height direction.

11. The transmission system according to any one of claims 1 to 4, characterized in that: The base comprises a square frame and a cover, and the cover is arranged on the surface of the square frame.

12. The transmission system according to claim 11, characterized in that The base also includes a reinforcing plate disposed on the cover, and the reinforcing plate is disposed at least in the area where the incoming material conveying line, the robot arm, and the pallet conveying line are disposed.

13. The transmission system according to any one of claims 1 to 4, characterized in that: The transmission system also includes a safety fence, which is fixed on the base and encloses an installation space. The incoming material conveyor line, the robot and the pallet conveyor line are all arranged in the installation space.

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