Battery electrolyte injection system and battery electrolyte injection method

Abstract

A battery electrolyte injection system and a battery electrolyte injection method. The battery electrolyte injection system comprises a conveying platform, wherein the conveying platform comprises a first conveying line, which is configured to convey battery cells; a battery-cell stacking assembly, which comprises a first transfer assembly (15), a driving member and at least two storage assemblies, the first transfer assembly (15) being configured to transfer the battery cells to the storage assemblies, and the driving member being configured to move the storage assemblies onto the first conveying line; a cover sealing assembly (20), the cover sealing assembly (20) comprising a second transfer assembly and an electrolyte injection cup; an electrolyte injection assembly; and an actuation module, wherein the first transfer assembly (15) is electrically connected to the actuation module, and the actuation module performs visual guidance on the movement of the first transfer assembly (15) on the basis of the positions of the battery cells on the first conveying line. In the solution, a plurality of battery cells can be placed on each storage assembly, and the provision of the two storage assemblies enables the whole system to inject an electrolyte into the plurality of battery cells at the same time, thereby effectively improving the electrolyte injection efficiency and the production efficiency.

Description

Battery filling system and battery filling method Technical Field

[0001] This application relates to the field of battery testing technology, and more particularly to a battery filling system and a battery filling method. This application claims priority to Chinese patent application number 202410156119.1, filed with the State Intellectual Property Office of China on February 4, 2024, entitled "Battery Filling System and Battery Filling Method," the entire contents of which are incorporated herein by reference. Background Art

[0002] When processing batteries, electrolyte needs to be injected into the battery. The electrolyte acts as a carrier for ion transmission, allowing the battery to perform its charging and discharging functions.

[0003] During use, the battery filling system of the related art cannot fill multiple batteries with liquid at the same time, resulting in low production efficiency.

[0004] Summary of the Invention

[0005] In view of the above problems, the present application provides a battery filling system and a battery filling method, which can solve the problem of low production efficiency during the use of the electrolyte filling system.

[0006] To solve the above technical problems, in the first aspect, the present application proposes a battery filling system, comprising:

[0007] A conveying platform, the conveying platform comprising a first conveying line, the first conveying line being used to convey battery cells;

[0008] A pallet assembly, comprising a first transfer assembly, a drive member, and at least two storage assemblies, wherein the first transfer assembly is used to transfer the battery cells to the storage assemblies, and the drive member is used to move the storage assemblies to the first conveyor line;

[0009] A cover assembly, comprising a second transfer assembly and a liquid filling cup, wherein the second transfer assembly is used to place the liquid filling cup into the liquid filling hole of the battery cell;

[0010] A liquid injection assembly, used for injecting electrolyte from the liquid injection cup into the battery cell;

[0011] An execution module is electrically connected to the first transfer component and is used to control the first transfer component to grab the battery cells on the first conveyor line.

[0012] In the technical solution of the embodiment of the present application, after a group of battery cells are transported to a preset position via the first conveyor line, the first transfer assembly transfers the group of battery cells to the storage assembly. The driving member then moves the storage assembly together with the battery cells on the storage assembly onto the first conveyor line. At this time, the first conveyor line transports the storage assembly to the second transfer assembly. The second transfer assembly places the injection cup on the battery cells. Finally, the first conveyor line transports the battery cells to the injection assembly, and the injection assembly completes the injection of the battery cells. In this technical solution, multiple battery cells can be placed on each storage assembly. The provision of two storage assemblies enables the overall system to inject multiple battery cells at the same time, effectively improving the injection efficiency and production efficiency.

[0013] In some embodiments, the conveying platform further includes a frame and a barcode scanning component, wherein the barcode scanning component is disposed on the frame and is configured to scan and read the barcodes of the battery cells on the first conveyor line. In this way, the barcode scanning component can conveniently read the barcode information on the battery cells, thereby quickly determining whether the corresponding battery cells are qualified.

[0014] In some embodiments, the conveying platform further includes a first weighing assembly, which is disposed on the rack. After the battery cell is scanned, the first conveying line conveys the battery cell to the first weighing assembly, and the first weighing assembly is used to weigh the battery cell.

[0015] Under the condition that the battery cell scanned and read by the code scanning component is normal and the weight of the battery cell weighed by the first weighing group is qualified, the first transfer component transfers the battery cell to the storage component.

[0016] In this way, the weight of each battery cell can be conveniently weighed through the first weighing component, thereby quickly judging whether the weight of the battery cell is qualified.

[0017] In some embodiments, the conveying platform further includes a first variable pitch assembly, the first variable pitch assembly includes a first variable pitch manipulator, and the first variable pitch manipulator is disposed on the frame;

[0018] After the battery cells are weighed, the first variable-distance manipulator is used to adjust the distance between two adjacent battery cells on the first conveyor line.

[0019] In this way, the distance between two adjacent battery cells is adjusted by the first variable-distance manipulator, which facilitates the subsequent grabbing of the first transfer component.

[0020] In some embodiments, a first placement rack is further included. If at least one cell in a group of cells scanned and read by the barcode scanning component is abnormal or at least one cell in a group of cells weighed by the first weighing component is unqualified, the first transfer component transfers all cells in the group to the first placement rack. This allows for easier transfer of unqualified cells to the first placement rack when unqualified cells are detected, thereby facilitating their stacking.

[0021] In some embodiments, a first cache component is further included, which is arranged at the rack. The execution module controls the movement of the first transfer component, and the first cache component is used to transfer a single battery cell that has passed the code scanning and weighing in a group of battery cells at the first placement rack to the first cache component.

[0022] In this way, it is convenient to store a single battery cell with qualified weight in a group of battery cells on the first placement rack, thereby further distinguishing the battery cells with qualified weight from the battery cells with unqualified weight in a group of battery cells.

[0023] In some embodiments, a cleaning assembly is further included, comprising a first robotic arm and a cleaning gun. The first robotic arm is mounted on the frame, and the cleaning gun is mounted on the first robotic arm. When the second transfer assembly transfers the liquid-filling cup to the storage assembly, the first conveyor line drives the storage assembly to the cleaning assembly, and the first robotic arm drives the cleaning gun to the liquid-filling cup. The provision of the cleaning assembly facilitates cleaning of the liquid-filling cup and prevents debris from forming on the liquid-filling cup.

[0024] In some embodiments, the system further comprises a lifting assembly and a second conveying line, wherein the lifting assembly is disposed on the frame, the second conveying line is located above the first conveying line along the height direction of the frame, and the injection assembly is located at the second conveying line;

[0025] After the second transfer assembly places the cleaned liquid-filling cup into the liquid-filling hole of the battery cell, the first conveyor line drives the storage assembly to the lifting assembly, which then transfers the storage assembly to the second conveyor line. This allows the first and second conveyor lines in the overall system to be arranged in a top-to-bottom structure, fully utilizing space and saving floor space.

[0026] In some embodiments, the lifting assembly includes a bracket, a lifting rod, a lifting plate, and a transfer conveyor line; the bracket is disposed on the frame, the fixed end of the lifting rod is disposed on the bracket, the telescopic end of the lifting rod is connected to the lifting plate, and the transfer conveyor line is disposed on the lifting plate;

[0027] When the first conveyor line drives the storage assembly to move to the lifting plate, the transfer conveyor line moves the storage assembly from the first conveyor line to above the transfer conveyor line. Since the transfer conveyor line is provided on the lifting assembly, the storage assembly can be conveniently transferred from the first conveyor line to other locations.

[0028] In some embodiments, the lifting assembly further includes at least two limiting assemblies.

[0029] The limiting assembly includes an electric telescopic rod, which is arranged on the lifting plate, and the telescopic direction of the electric telescopic rod is perpendicular to the plane where the lifting plate is located; the two electric telescopic rods are correspondingly located on both sides of the transfer conveyor line along the movement direction.

[0030] When the storage assembly is located at the first conveyor line, the electric telescopic rod is in an initial state, and when the storage assembly moves from the first conveyor line to the transfer conveyor line, the electric telescopic rod extends.

[0031] By setting a limit assembly, when the storage assembly is lifted up by the lifting assembly, the limit assembly can prevent the storage assembly from falling off the transfer conveyor line.

[0032] In some embodiments, a second cache assembly is further included, and the second cache assembly is arranged on the second conveying line; when the injection assembly is in working state, the second conveying line is used to transfer the storage assembly together with the battery cells on the storage assembly to the second cache assembly.

[0033] In this way, when the liquid injection assembly is working, the storage assembly on the second conveyor line together with the battery cells on the storage assembly can be transferred to the second cache assembly to avoid the battery cells from piling up at the liquid injection assembly.

[0034] In some embodiments, the machine further comprises a stationary component and a grabbing component, wherein the stationary component is disposed on the frame, and the grabbing component is disposed on the stationary component;

[0035] The second conveyor line transports the battery cells that have been injected to the resting assembly, and the grabbing assembly transfers the storage assembly and the battery cells thereon to the resting assembly. The grabbing assembly transfers the storage assembly and the battery cells thereon to the resting assembly, thereby providing a resting location for the battery cells that have been injected.

[0036] In some embodiments, a cover removal assembly is further included, wherein the cover removal assembly includes a second mechanical arm, and the second mechanical arm is disposed on the frame;

[0037] After the grabbing assembly transfers the storage assembly and the battery cells on the storage assembly to the first conveyor line, the first conveyor line conveys the storage assembly to the second robotic arm, which is used to remove the injection cup from the battery cells on the storage assembly. This facilitates the removal of the injection cup from the battery cells on the storage assembly after injection.

[0038] In some embodiments, the machine further comprises a second pitch-changing assembly, wherein the second pitch-changing assembly comprises a second pitch-changing manipulator, and the second pitch-changing manipulator is disposed on the frame;

[0039] When the second robot arm has disassembled the liquid filling cup of the battery cell on the storage assembly, the first conveyor line drives the storage assembly to move, and the second variable-pitch robot is used to adjust the distance between two adjacent battery cells on the storage assembly.

[0040] The distance between two adjacent battery cells with thicker covers is adjusted by the second distance-changing component, thereby facilitating the subsequent grabbing of the battery cells.

[0041] In some embodiments, a second weighing assembly is further included. The second weighing assembly is disposed on the frame. After the battery cells, after the cover is removed, have completed the pitch change, the first conveyor line conveys the battery cells to the second weighing assembly, where the second weighing assembly is used to weigh the battery cells. The second weighing assembly facilitates determining whether the weight of the battery cells after injection is acceptable.

[0042] In some embodiments, a cleaning assembly is further included, the cleaning assembly being disposed on the frame and being used to clean the qualified battery cells when the weight of the battery cells measured by the second weighing assembly is qualified. The provision of the cleaning assembly facilitates cleaning of the battery cells after injection.

[0043] In some embodiments, a second placement rack is further included. If at least one cell in a group of cells fails to meet the weight requirement, the first transfer assembly transfers all cells in the group to the second placement rack. This allows cells in a group of cells to be transferred to the second placement rack if they fail to meet the weight requirement, thus preventing the failed cells from being stacked on the first conveyor line.

[0044] In some embodiments, a third cache assembly is further included, and the third cache assembly is arranged on the rack. The first transfer assembly is used to transfer a single battery cell that has passed the weighing in the group of battery cells to the third cache assembly; under the condition that the number of battery cells at the third cache assembly reaches a preset value, the first transfer assembly transfers all battery cells at the third cache assembly to the first conveyor line at the same time.

[0045] In this way, it is convenient to store a single battery cell with unqualified weight in a group of battery cells on the second placement rack, thereby further distinguishing the battery cells with qualified weight from the unqualified battery cells in a group of battery cells.

[0046] In a second aspect, the present application proposes a battery filling method, comprising a first conveying line, a first transfer assembly, a storage assembly, a cover closing assembly, and a filling assembly;

[0047] The method comprises the following steps:

[0048] Loading step: the first transfer component transfers the battery cells on the first conveyor line to the storage component;

[0049] Transfer step: the first conveyor line transfers the storage assembly together with the battery cells on the storage assembly to the position of the cover assembly;

[0050] Cover closing step: the cover closing assembly places the liquid filling cup on the battery cell;

[0051] Liquid injection step: the liquid injection assembly injects electrolyte into the battery cell through the liquid injection cup.

[0052] In some embodiments, the method further includes a first detection component. Before the loading step, the battery filling method further includes:

[0053] The first detection step: the first transfer component transfers the battery cell to the first detection component for detection. If the detection is qualified, the first transfer component transfers the battery cell to the storage component.

[0054] In some embodiments, the method further includes a first weighing component. After the test is qualified, the battery filling method further includes:

[0055] The first weighing step: the first transfer component transfers the battery cell to the first weighing component. If the weighing is qualified, the first transfer component transfers the battery cell to the storage component.

[0056] In some embodiments, a cleaning component is further included. Before the cover assembly places the filling cup on the battery cell, the battery filling method further includes:

[0057] Cleaning step: the cleaning component cleans the liquid injection cup.

[0058] In some embodiments, a lifting assembly is further included. After the cover closing step, the battery filling method further includes:

[0059] Lifting step: the lifting assembly moves the battery cell together with the liquid injection cup on the battery cell to a preset position.

[0060] In a third aspect, the present application also provides a battery liquid injection method, comprising:

[0061] Production steps: production of battery cells;

[0062] Detection step: detecting the weight and barcode of the battery cell;

[0063] Closing steps: Place the filling cup on the battery cell that has qualified weight and barcode;

[0064] Lifting step: Move the covered battery cell to the production line above the inspection step;

[0065] Liquid injection step: injecting electrolyte into the battery cell using the liquid injection assembly.

[0066] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] 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 application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0068] FIG1 is a schematic structural diagram of a battery liquid injection system according to some embodiments of the present application;

[0069] FIG2 is a schematic structural diagram of a battery liquid injection system according to some embodiments of the present application;

[0070] FIG3 is a perspective view of FIG1 ;

[0071] FIG4 is a side view of FIG3;

[0072] FIG5 is a schematic flow chart of a battery liquid injection method according to some embodiments of the present application;

[0073] FIG6 is a schematic diagram of the specific fluid flow in FIG5 ;

[0074] FIG7 is a schematic diagram of a disk assembly process in some embodiments of the present application;

[0075] FIG8 is a schematic diagram of a lifting station process in some embodiments of the present application.

[0076] The figure numbers in the specific implementation manner are as follows: 11. Incoming material pull belt; 12. Code scanning component; 13. First weighing component; 14. First variable distance component; 15. First transfer component; 16A, loading station; 16B, loading station; 17. First placement rack; 18. First cache component; 19. Cleaning component; 20. Cover closing assembly; 21. Lifting component; 22. Second cache component; 23. Liquid filling station; 24. Standing component; 25. Standing box; 26. Maintenance station; 27. Cover removal assembly; 28. Loading and unloading stations; 29. ​​Unloading robot; 30. Unloading NG pairing station; 31. Unloading NG station; 32. Variable distance station before unloading; 33. Unloading weighing station; 34. Variable distance station after unloading; 35. Cleaning component; 36. Unloading pull belt. DETAILED DESCRIPTION

[0077] The following embodiments of the technical solution of the present application will be 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 application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0078] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art 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 the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0079] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0080] 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 application. 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.

[0081] In the description of the embodiments of this application, 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 the following 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.

[0082] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0083] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0084] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," 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; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0085] Below, this application is described in detail.

[0086] 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.

[0087] With the advancement of battery production technology, automated production lines are now increasingly used for battery processing, assembly, transportation, and testing. During the processing of battery cells, an electrolyte needs to be injected into the battery. This electrolyte acts as a carrier for ion transport, enabling the battery to perform its charge and discharge functions.

[0088] It has been found that the existing battery filling system is unable to fill multiple batteries at the same time due to its limited size, resulting in low production efficiency.

[0089] To solve the above technical problems, as shown in Figure 1 in combination with Figures 2, 3 and 4, Figure 1 is a structural schematic diagram of a battery filling system provided by the present application, Figure 2 is a structural schematic diagram of another battery filling system provided by the present application, Figure 3 is a three-dimensional diagram of the battery filling system provided by the present application, and Figure 4 is a side view of the battery filling system provided by the present application.

[0090] The battery filling system in the present application includes: a conveying platform, a tray assembly, a cover assembly 20, a filling assembly and an execution module, wherein the conveying platform includes a first conveyor line, and the first conveyor line is used to convey battery cells; the tray assembly includes a first transfer component 15, a drive member and at least two storage components, the first transfer component 15 is used to transfer the battery cells to the storage component, and the drive member is used to move the storage component to the first conveyor line; the cover assembly 20 includes a second transfer component and a filling cup, the second transfer component is used to place the filling cup into the filling hole on the battery cell; the filling assembly is used to inject electrolyte from the filling cup into the battery cell; the first transfer component is electrically connected to the execution module, and the execution module controls the movement of the first transfer component based on the position of the battery cell on the first conveyor line.

[0091] In this embodiment, the structure of the first conveyor line can be a belt conveyor line, a roller conveyor line, etc., which can be determined according to actual conditions and is not limited in this embodiment of the present specification. It should be noted that this embodiment can also use an automated guided vehicle (AGV) to transport the battery cells. The electromagnetic or optical guidance device provided on the AGV can be used to guide the movement of the AGV, so that the AGV can move along a specified path.

[0092] In this embodiment, the first transfer assembly 15 may be configured as a robotic arm, a six-degree-of-freedom robot, or the like, depending on practical circumstances and not limited in this embodiment. The drive element may include a chain conveyor, a conveyor belt, or the like. The storage assembly may be configured as a sealing nail placement tray, a hollow housing, a U-shaped trough, or the like, depending on practical circumstances and not limited in this embodiment.

[0093] In this embodiment, the structure of the second transfer component can be a robotic arm, a six-degree-of-freedom robot, etc., which can be determined according to actual conditions and is not limited in this embodiment of the present specification.

[0094] In this embodiment, the liquid injection assembly may include a liquid injection rack, a liquid injection head, a liquid injection pump, and an electrolyte tank. The liquid injection head and electrolyte tank are mounted on the liquid injection rack, and the liquid injection pump is mounted on the electrolyte tank. The liquid injection head and the outlet of the liquid injection pump are connected by a tube, and the inlet of the liquid injection pump is connected to the interior of the electrolyte tank by a tube. During use, by activating the liquid injection pump, the electrolyte in the electrolyte tank is transferred to the liquid injection head. It is understood that the above-mentioned liquid injection assembly may also have other structures, for example, the liquid injection assembly may include an automatic syringe, etc., and this is not limited here.

[0095] In the present embodiment, the execution module can be a programmable logic controller (PLC), or other devices with processing functions can be used to set the execution module, such as an industrial computer can be used to set the execution module, which can be specifically determined according to actual conditions, and this specification embodiment does not limit this. In addition, in the embodiment of the present application, a distributed control system can also be used to carry out decentralized processing of the first conveyor line, the first transfer component, the driver, the second transfer component and the injection assembly. Specifically, a PLC can be set for the first conveyor line, a PLC can be set for the first transfer component, a PLC can be set for the driver, a PLC can be set for the second transfer component, a PLC can be set for the injection assembly, and an industrial computer can be set for the above-mentioned PLC. For this, the industrial computer can also be called a host computer. In this way, an industrial computer can be used to transmit control signals to the above-mentioned PLC to realize control of the movement of the above-mentioned first conveyor line, the first transfer component, the driver, the second transfer component and the injection assembly.

[0096] On this basis, it can be considered that the execution module in the embodiment of the present application includes any device with processing function in the battery filling system.

[0097] In the technical solution of the embodiment of the present application, four battery cells are regarded as a group. Of course, it can be understood that each group of battery cells can also include other numbers of battery cells. For example, six battery cells or ten battery cells can be regarded as a group. The specific number can be determined according to actual conditions and is not limited here.

[0098] As shown in FIG1 , the present application provides a drive member on both the loading station 16A and the loading station 16B. Furthermore, both the loading station 16A and the loading station 16B are provided with a storage assembly, and each storage assembly is correspondingly provided on the drive member. When the first conveyor line conveys a group of battery cells to the position of the assembly, the first conveyor line stops moving, and the first transfer assembly 15 grabs the corresponding group of battery cells and places them on the storage assembly on the loading station 16A, or the first transfer assembly 15 grabs the corresponding group of battery cells and places them on the storage assembly on the loading station 16B. When 24 battery cells are placed in the storage assembly on the loading station 16A or 24 battery cells are placed in the storage assembly on the loading station 16B, the drive member on the loading station 16A or the drive member on the loading station 16B is activated. The drive member, i.e., the chain conveyor, can drive the storage assembly at the corresponding position to move, and ultimately move the storage assembly to the first conveyor line.

[0099] At this time, the first conveyor line transports the storage assembly together with the battery cells on the storage assembly to the position of the cover assembly, and the second transfer assembly grabs the corresponding liquid filling cup and places it on the battery cells. Finally, the first conveyor line transports the storage assembly together with the battery cells and liquid filling cup on the storage assembly to the position of the liquid filling assembly. When the positions of the liquid filling head and the liquid filling cup on the liquid filling assembly correspond, the battery cells can be filled with liquid.

[0100] Through this technical solution, multiple battery cells can be placed on each storage component. The setting of two storage components enables the overall system to inject liquid into multiple battery cells at the same time, effectively improving the injection efficiency and production efficiency.

[0101] According to some embodiments of the present application, as shown in FIG1 , the conveying platform further includes a frame and a barcode scanning component 12 . The barcode scanning component 12 is disposed on the frame and is used to scan and read barcodes on battery cells on the first conveyor line.

[0102] In this embodiment, the first conveyor line can be the incoming material belt 11 in Figure 1, and the code scanning component 12 can be an infrared code scanner, a code scanning gun, etc., which can be determined according to actual conditions and is not limited in this embodiment.

[0103] Exemplarily, the first conveyor line and the barcode scanning component 12 are both arranged on a rack, and the barcode scanning component 12 is located above the first conveyor line. When the battery cells conveyed on the first conveyor line pass under the barcode scanning component 12, the barcode scanning component 12 scans the barcodes on the battery cells on the first conveyor line one by one. Subsequently, the barcode scanning component 12 sends the corresponding scan results to the local MES system for verification to check whether the current status of the battery cells is traceable normally in the MES system.

[0104] This embodiment can conveniently read the barcode information on the battery cell through the barcode scanning component, thereby quickly judging whether the corresponding battery cell is qualified, and effectively preventing unqualified battery cells from flowing into subsequent workstations.

[0105] According to some embodiments of the present application, as shown in Figure 1, the conveying platform also includes a first weighing component 13, which is arranged on the frame. After the battery cell is scanned, the first conveyor line conveys the battery cell to the first weighing component 13, and the first weighing component 13 is used to weigh the battery cell; at the same time, the first transfer component 15 is used to transfer the battery cell that has passed the code scanning and weighing to the storage component.

[0106] In this embodiment, the first weighing component 13 may be a weighing sensor, which is disposed at a weighing station on the frame and is located below the conveyor belt on the first conveyor line.

[0107] After the battery cells on the first conveyor line have been scanned, they continue to be transported to the weighing station on the rack. At this time, the weighing sensor located below the conveyor belt on the first conveyor line can weigh the battery cells on the first conveyor line one by one. The weighing sensor then sends the weighing result to the local MES system for verification to check whether the current weight of the battery cells is traceable in the MES system.

[0108] In this embodiment, the first weighing assembly 13 is provided to facilitate weighing of each battery cell, thereby enabling quick determination of whether the battery cell weight is acceptable.

[0109] According to some embodiments of the present application, as shown in FIG1 , the conveying platform further includes a first distance-changing component 14 . After the battery cells are weighed, the first distance-changing component 14 is used to adjust the distance between two adjacent battery cells on the first conveying line.

[0110] In this embodiment, the first variable distance component 14 can be a first variable distance manipulator, which is set on the frame. After the battery cell is weighed, the first conveyor line conveys the battery cell to the variable distance station on the frame. The first variable distance component 14 is started, and then the first variable distance component 14 adjusts the distance between two adjacent battery cells on the first conveyor line from 120mm to 100mm. Of course, it is understandable that the distance between two adjacent battery cells can also be adjusted from 120mm to 95mm. The specific distance can be determined according to actual conditions, and this embodiment is not limited to this. In this way, by setting the first variable distance group 14, the distance between two adjacent battery cells can be adjusted, which facilitates the subsequent grabbing of the first transfer component.

[0111] According to some embodiments of the present application, as shown in Figure 1, the battery filling system also includes a first placement rack 17. When at least one battery cell in a group of battery cells fails the code scanning or weighing, the first transfer component 15 transfers all the battery cells in the group to the first placement rack 17.

[0112] In this embodiment, the first placement rack 17 can be a storage rack of any structure. Of course, this embodiment can also use a conveyor belt or an automatic guided vehicle to store unqualified battery cells.

[0113] Exemplarily, the above-mentioned group of battery cells includes four individual battery cells, and the serial numbers of the four individual battery cells can be ①, ②, ③, and ④. After a group of battery cells on the first conveyor line passes through the scanning component 12, the scanning component 12 scans the four battery cells in turn and finds that there is a problem with the scanned code information of battery cell No. ①, for example, the barcode of battery cell No. ① is unclear, or the battery cell production date recorded in the barcode on battery cell No. ① is expired; then, the group of battery cells on the first conveyor line passes through the first weighing component 13, and the first weighing component 13 weighs the four battery cells in turn and finds that there is a problem with the weight of battery cell No. ③. At this time, the first transfer component 15 will transfer all of this group of battery cells to the first placement rack 17. In this way, when unqualified battery cells are detected, the unqualified battery cells can be conveniently transferred to the first placement rack, which is conducive to the stacking of unqualified battery cells.

[0114] It should be noted that the above-mentioned problem with scanning code of battery cell No. 1 and problem with weight of battery cell No. 3 are only examples, and the specific problem can be determined based on actual conditions. For example, there is a problem with the weight of battery cell No. 1, but the other three battery cells are qualified, and there is no restriction here.

[0115] According to some embodiments of the present application, as shown in Figure 1, the battery filling system also includes a first cache component 18, which is arranged on a rack, and the first transfer component 15 is used to transfer a single battery cell in a group of battery cells that has passed the code scanning and weighing to the first cache component 18.

[0116] In this embodiment, the first buffer assembly 18 can be a tray, storage box, or similar device for storing battery cells. For example, referring to the description above, if there are problems with cell ① and good cells ③ in a group of battery cells, the first transfer assembly 15 will first transfer the entire group of battery cells to the first placement rack 17. Then, the first transfer assembly 15 will transfer cell ② and good cells 4 from the group of battery cells on the first placement rack 17 to the first buffer assembly 18. When four qualified battery cells are placed on the first buffer assembly 18, the first transfer assembly 15 will then grab the four cells from the first buffer assembly 18 and place them on the storage assembly.

[0117] In this embodiment, by setting the first cache component 18, a single battery cell with qualified weight in a group of battery cells on the first placement rack 17 can be conveniently stored, thereby further distinguishing between battery cells with qualified weight and battery cells with unqualified weight in a group of battery cells.

[0118] According to some embodiments of the present application, as shown in Figure 2, the battery filling system also includes a cleaning component 19, which is arranged on the frame. When the second transfer component transfers the filling cup to the storage component, the first conveyor line drives the storage component to move to the cleaning component 19, and the cleaning component 19 is used to clean the filling cup.

[0119] In this embodiment, the cleaning assembly 19 includes a first robotic arm and a cleaning gun. The first robotic arm is arranged on a frame, and the cleaning gun is arranged on the first robotic arm. The specific arrangement can be determined according to actual conditions.

[0120] For example, after the first conveyor line moves the storage assembly and the cells on it to the cleaning station on the rack, the first conveyor line then moves the storage assembly and the cells on it to the lid closing station on the rack. At this point, the robot at the lid closing station places the corresponding liquid filling cup on the cleaning assembly 19 for cleaning before installing it on the cells on the storage assembly. In this way, the provision of the cleaning assembly 19 facilitates the cleaning of the liquid filling cup and prevents the accumulation of debris on the liquid filling cup.

[0121] According to some embodiments of the present application, as shown in Figure 1, the battery filling system also includes a lifting assembly 21 and a second conveyor line, wherein the lifting assembly 21 is arranged on the frame, the second conveyor line is located above the first conveyor line along the height direction of the frame, and the filling assembly is located on the second conveyor line; under the condition that the second transfer assembly places the cleaned filling cup into the filling hole on the battery cell, the first conveyor line drives the storage assembly to move to the lifting assembly 21, and the lifting assembly 21 transfers the storage assembly to the second conveyor line.

[0122] In this embodiment, the structure of the lifting component 21 can be a hydraulic lifting frame, and a chain conveyor is provided on the lifting platform of the hydraulic lifting frame. The specific structure can be determined according to actual conditions.

[0123] In the initial position, the chain conveyor on the hydraulic lift is aligned with the first conveyor line, and the chain conveyor is located at the end of the first conveyor line. When the first conveyor line transfers the storage assembly onto the chain conveyor, the hydraulic lift begins to rise. Once the chain conveyor is aligned with the second conveyor line, the hydraulic lift stops, and the chain conveyor connects with the starting end of the second conveyor line. The chain conveyor is then activated to transfer the storage assembly on the chain conveyor, along with the battery cells on the storage assembly, to the second conveyor line. This creates a top-down arrangement of the first and second conveyor lines in the overall system. The liquid injection assembly is located on the second conveyor line, effectively utilizing space and saving floor space.

[0124] According to some embodiments of the present application, the lifting assembly 21 includes a bracket, a lifting rod, a lifting plate and a transfer conveyor line; the bracket is set on the frame, the fixed end of the lifting rod is set on the bracket, the telescopic end of the lifting rod is connected to the lifting plate, and the transfer conveyor line is set on the lifting plate; the storage assembly is driven to move to the lifting assembly on the first conveyor line, and the storage assembly is moved from the first conveyor line to the transfer conveyor line.

[0125] In the initial position, the transfer conveyor line is co-located with the first conveyor line, and the transfer conveyor line is located at the end of the first conveyor line. After the first conveyor line transfers the storage assembly to the transfer conveyor line, the lifting rod drives the lifting plate upward, which in turn drives the transfer conveyor line upward. When the transfer conveyor line and the second conveyor line are co-located, the lifting rod stops moving, and the transfer conveyor line connects with the starting end of the second conveyor line. The presence of the transfer conveyor line on the lifting assembly facilitates the transfer of storage assemblies from the first conveyor line to other locations.

[0126] It should be noted that the structure of the lifting assembly described above is merely an example. In other alternative solutions, other structures may also be adopted. For example, the lifting assembly may include a hydraulic lift and a mechanical claw, with the mechanical claw being mounted on the hydraulic lift. This application does not impose any particular restrictions on the specific structure of the lifting assembly, as long as the above structure can achieve the objectives of this application.

[0127] According to some embodiments of the present application, the lifting assembly also includes at least two limit assemblies, wherein the two limit assemblies are arranged on the lifting plate, and at the same time, the two limit assemblies are located on both sides of the movement direction of the transfer conveyor line, and the limit assemblies can be extended and retracted along the height direction of the frame; when the storage assembly moves from the first conveyor line to the transfer conveyor line, the limit assembly extends along the height direction of the frame.

[0128] For example, the above-mentioned limiting assembly can be an electric telescopic rod, a pneumatic cylinder, etc., and the specific embodiment can be determined according to actual conditions and is not limited to this in the embodiments of this specification. By providing the limiting assembly, when the storage assembly is placed on the transfer conveyor line, the limiting assembly extends along the height direction of the rack. At this time, a limiting assembly is provided on both sides of the transfer conveyor line along the conveying direction. In this way, when the lifting assembly moves, the limiting assembly can prevent the storage assembly from falling off the transfer conveyor line.

[0129] According to some embodiments of the present application, as shown in FIG1 , the battery filling system further includes a second cache assembly 22 , which is disposed on the second conveying line.

[0130] In this embodiment, the second cache component 22 can be a storage platform or a conveyor belt, etc., which can be determined according to actual conditions and is not limited in this embodiment of the present specification.

[0131] When the liquid filling station 23 on the rack is working, the second conveyor line can transfer the storage assembly together with the battery cells on the storage assembly to the second cache assembly to avoid the battery cells from piling up at the liquid filling station 23.

[0132] According to some embodiments of the present application, as shown in FIG1 , the battery filling system further includes a stationary component 24 and a grabbing component, wherein the stationary component 24 is disposed on the frame, and the grabbing component is disposed on the stationary component;

[0133] The battery cells that have been injected are transported to the stationary component 24 on the second conveyor line, and the grabbing component transfers the storage component and the battery cells on the storage component to the stationary component 24 .

[0134] Exemplarily, the above-mentioned stationary component 24 can be a stationary trolley or an automatically guided trolley, etc., and the grabbing component can be a robotic arm. The grabbing component is arranged on the stationary component 24. When the second conveyor line conveys the battery cell with completed injection to the stationary component 24, the grabbing component transfers the storage component together with the battery cell on the storage component to the stationary component 24.

[0135] After the storage components and the cells on them are transferred to the resting assembly 24, the corresponding storage components are then transferred to the resting box 25 by the grabbing assembly. Each resting box 25 can hold multiple storage components. After the processing time is met, the storage components in the resting box 25 can be taken out.

[0136] In this embodiment, the storage assembly and the battery cells on the storage assembly are transferred to the static assembly through the grabbing assembly, thereby providing a static position for the battery cells after liquid injection.

[0137] According to some embodiments of the present application, the battery filling system also includes a cover removal assembly 27, which is arranged on the frame; when the grabbing assembly transfers the storage assembly on the stationary assembly 24 together with the battery cells on the storage assembly to the first conveyor line, the first conveyor line conveys the storage assembly to the cover removal assembly 27, and the cover removal assembly is used to remove the filling cup on the battery cells on the storage assembly.

[0138] In this embodiment, the cover removal assembly 27 may be structured as a robotic arm, a six-degree-of-freedom robot, etc. When the gripping assembly transfers the storage assembly on the stationary assembly 24 together with the battery cells on the storage assembly to the first conveyor line, the first conveyor line conveys the storage assembly to the cover removal assembly 27. The cover removal assembly is used to remove the liquid filling cup from the battery cells on the storage assembly, thereby facilitating the removal of the liquid filling cup from the battery cells on the storage assembly after liquid filling.

[0139] According to some embodiments of the present application, the battery filling system further includes a second distance-changing component, which is used to adjust the distance between two adjacent battery cells on the first conveyor line after the battery cells on the storage component are removed from the cover.

[0140] In this embodiment, the second variable distance component can be a second variable distance manipulator. By setting the second variable distance component, the distance between two adjacent battery cells with thick covers can be conveniently adjusted. For example, the distance between two adjacent battery cells can be adjusted from 100 mm to 120 mm, thereby facilitating the subsequent grabbing of the battery cells.

[0141] According to some embodiments of the present application, the battery filling system also includes a second weighing assembly, which is arranged on the frame. After the battery cell is removed from the cover and the distance change is completed, the first conveyor line conveys the battery cell to the second weighing assembly, and the second weighing assembly is used to weigh the weight of the battery cell.

[0142] In this embodiment, the second weighing component may be a weighing sensor, which is disposed at a weighing station on the frame, and the weighing sensor is located below the conveyor belt on the first conveyor line.

[0143] After the cells on the first conveyor line have passed the variable distance, they continue to be transported to the weighing station on the rack. At this point, the load cells located below the conveyor belt on the first conveyor line can weigh the cells one by one. The load cells then send the weight results to the local MES system for verification to check whether the current cell weight meets the requirements.

[0144] In this embodiment, the second weighing assembly is provided to facilitate weighing the weight of the battery cell after liquid injection, thereby facilitating determination of whether the weight of the battery cell after liquid injection is qualified.

[0145] According to some embodiments of the present application, the battery filling system further includes a cleaning component, which is disposed on the frame. When the weight of the battery cell weighed by the second weighing component is qualified, the cleaning component is used to clean the battery cell of qualified weight.

[0146] In this embodiment, the cleaning component can be an automatic wiping machine, a robotic arm, etc. When the first conveyor line drives the battery cell to move to the cleaning station on the rack, the cleaning component can conveniently clean the battery cell after liquid injection.

[0147] According to some embodiments of the present application, the battery filling system further includes a second placement rack. When at least one battery cell in a group of battery cells fails to be weighed, the first transfer component transfers all of the battery cells in the group to the second placement rack.

[0148] For example, when one battery cell in a group of battery cells fails to meet the weight requirements, the robot on the rack will transfer all the battery cells in the corresponding group to the second placement rack, thereby avoiding the unqualified battery cells from being stacked on the first conveyor line.

[0149] According to some embodiments of the present application, the battery filling system further includes a third cache assembly, which is disposed on the rack, and the first transfer assembly is used to transfer a single battery cell that has passed the weighing in a group of battery cells to the third cache assembly.

[0150] In this embodiment, the third buffer assembly can be a tray, storage box, or similar device for storing battery cells. For example, referring to the description above, after a group of battery cells have been filled with electrolyte, if the weight of battery cell number ② is problematic, the first transfer assembly 15 will first transfer the entire group of cells to the second storage rack. Then, the first transfer assembly 15 will transfer cells numbered ①, ③, and ④ from the second storage rack to the third buffer assembly. When four qualified battery cells are placed on the third buffer assembly, the first transfer assembly 15 will then grab the four cells from the third buffer assembly and place them on the unloading pull belt.

[0151] In this embodiment, by providing the third buffer component, a single battery cell with qualified weight in a group of battery cells on the second placement rack can be conveniently stored, thereby further distinguishing between battery cells with qualified weight and battery cells with unqualified weight in a group of battery cells.

[0152] To sum up, when the battery filling system is in use, it is explained by taking four battery cells as an example. Referring to Figure 1 and combined with Figures 2, 3, and 4, first a group of battery cells are placed on the first conveyor line, that is, the incoming material pull belt 11. The incoming material pull belt 11 conveys a group of battery cells to the code scanning station on the rack. The code scanning component 12 on the rack scans the battery cells. Then the incoming material pull belt 11 conveys a group of battery cells to the weighing station on the rack. The first weighing component 13 weighs the battery cells. If at least one individual battery cell in a group of battery cells fails the scanning or weighing, the first transfer component 15 transfers all the battery cells in this group to the first placement rack 17. If a group of battery cells are qualified after scanning and weighing, the battery cells on the incoming material pull belt 11 are adjusted in spacing by the first distance-changing component 14, and then the first transfer component 15 transfers all of the battery cells to the storage component, i.e., the tray, on the loading station 16A or the loading station 16B. When the tray on the loading station 16A or the loading station 16B has 24 battery cells, the drive member transports the corresponding tray to the first conveyor line again. At this time, the first conveyor line transports the tray and the battery cells on the tray to the cleaning station and the lid closing station on the rack in sequence. The cleaning component 19 on the rack cleans the liquid filling cup, and the lid closing assembly 20 places the cleaned liquid filling cup on the battery cells. At this time, the first conveyor line transports the tray to the lifting component 21, and the lifting component 21 drives the tray to rise to the second conveyor line. The second conveyor line then transports the tray and the battery cells on the tray to the liquid filling station. At this time, the liquid filling assembly on the rack completes the liquid filling of the battery cells. Subsequently, the maintenance station 26 on the frame performs maintenance on the liquid filling cup.

[0153] After each battery cell is filled with liquid, the second conveyor line transfers the battery cell to the static station for static placement, and then transfers the static battery cell to the first conveyor line through the unloading robot 29 on the rack unloading station 28. The first conveyor line then transfers the battery cell to the uncapping station for uncapping.

[0154] After the cover is removed, the first conveyor line transfers the battery cells to the second weighing station, namely the unloading weighing station 33, for weighing after processing at the pre-unloading distance changing station 32. Then, the battery cells are transferred to the post-unloading distance changing station 34 through the first conveyor line for distance changing. When the weighing at the unloading weighing station 33 is qualified, the first conveyor line transfers the battery cells to the cleaning station, and the cleaning components 35 on the rack clean the battery cells. Finally, the cleaned battery cells are transferred to the unloading pull belt 36.

[0155] When at least one of a group of battery cells is found to be unqualified when weighed at the unloading weighing station 33, the unloading robot transfers all the battery cells in this group to the unloading NG station 31, and then the unloading robot transfers a battery cell of qualified weight on the unloading NG station 31 to the unloading NG pairing station 30. When the number of battery cells on the unloading NG pairing station reaches the preset number, the unloading robot transfers the corresponding battery cell to the unloading pull belt.

[0156] The present application proposes a battery filling method, comprising a first conveying line, a first transfer assembly, a storage assembly, a cover closing assembly and a filling assembly;

[0157] As shown in FIG5 , the method includes the following steps:

[0158] Loading step S101: The first transfer component transfers the battery cells on the first conveyor line to the storage component; wherein, in this embodiment, the structure of the first transfer component 15 can be a robotic arm, a six-degree-of-freedom robot, etc., which can be determined according to actual conditions, and the embodiments of this specification do not limit this.

[0159] The structure of the first conveyor line can be a belt conveyor line, a roller conveyor line, etc., which can be determined according to actual conditions and is not limited in this embodiment of the present invention. It should be noted that this embodiment can also use an automated guided vehicle (AGV) to transport the battery cells. The electromagnetic or optical guidance device provided on the AGV can be used to guide the movement of the AGV, so that the AGV can move along a specified path.

[0160] Transfer step S102: The first conveyor line transfers the storage assembly together with the battery cells on the storage assembly to the position of the cover assembly; in this method, the cover assembly 20 includes a second transfer assembly and a liquid filling cup, wherein the structure of the second transfer assembly is the same as that of the first transfer assembly 15, which will not be repeated here.

[0161] Closing step S103: The closing cover assembly places the liquid filling cup on the battery cell; when the storage component and the battery cell on the storage component are transferred to the closing cover assembly, the second transfer component places the liquid filling cup into the liquid filling hole on the battery cell, and then the liquid filling assembly injects the electrolyte from the liquid filling cup into the battery cell.

[0162] Injection step S104: The injection assembly injects electrolyte into the battery cell through the injection cup. The injection assembly in this embodiment may include an injection rack, an injection head, an injection pump, and an electrolyte tank, wherein the injection head and the electrolyte tank are arranged on the injection rack, the injection pump is arranged on the electrolyte tank, the injection head and the outlet end of the injection pump are connected by a tube body, and the inlet end of the injection pump is connected to the inside of the electrolyte tank by a tube body. When in use, by starting the injection pump, the electrolyte in the electrolyte tank can be transported to the injection head. Of course, it is understandable that the above-mentioned injection assembly can also be other structures, for example: the injection assembly includes an automatic syringe, etc., which is not limited here.

[0163] Referring to FIG6 , the method specifically includes:

[0164] Step S201: Incoming battery cells. Specifically, the battery cells are transported via the incoming material belt 11 as shown in FIG1 ;

[0165] Step S202: a barcode scanning station, which is equipped with an infrared barcode scanner or a barcode scanning gun, etc., and can scan the barcode on the battery cell through the infrared barcode scanner;

[0166] Step S203: a weighing station, which is equipped with a weight sensor, and the battery cell can be weighed by the weight sensor;

[0167] Step S204: Check whether there are any unqualified cells. In this step, if both the code scanning and weighing meet the requirements, the cells are judged to be qualified.

[0168] Step S205: If so, place the unqualified cells on the first storage rack. In this step, the unqualified cells can be transferred to the first storage rack by a robotic arm.

[0169] Step S206: If it does not exist, place it on the assembly station; in this step, if at least one battery cell in the group of battery cells scanned and read is abnormal or at least one battery cell weight in the group of battery cells weighed is unqualified, all the battery cells in the group are transferred to the first placement rack.

[0170] Step S207: Cleaning. Specifically, the battery cell may be cleaned by a nozzle;

[0171] Step S208: The cover closing station is equipped with a second transfer assembly and a liquid injection cup. The structure of the second transfer assembly is the same as that of the first transfer assembly and will not be further described here. When the battery cell is transferred to the cover closing station, the second transfer assembly is used to place the liquid injection cup into the liquid injection hole on the battery cell.

[0172] Step S209: lifting station, this step includes a lifting assembly, the lifting assembly includes a bracket, a lifting rod, a lifting plate and a transfer conveyor line; the bracket is set on the frame, the fixed end of the lifting rod is set on the bracket, the telescopic end of the lifting rod is connected to the lifting plate, and the transfer conveyor line is set at the lifting plate; the first conveyor line drives the storage assembly to move to the lifting plate, and the transfer conveyor line moves the storage assembly from the first conveyor line to above the transfer conveyor line.

[0173] Step S210: injecting electrolyte into the battery cell through an injection head;

[0174] Step S211: a resting station, where a resting box is provided. After the battery cell is filled with electrolyte, the battery cell can be transferred to the resting box for resting.

[0175] Step S212: transfer;

[0176] Step S213: Disassembling the tray. In this step, the liquid injection cup can be removed from the battery cell by a robotic arm, and then the removed liquid injection cup is cleaned;

[0177] Step S214: weighing. This step can be used to weigh the battery cell after the electrolyte is injected through a weight sensor.

[0178] Step S215: whether the battery cell is unqualified;

[0179] Step S216: If not, place the battery cell in a cleaning station;

[0180] Step S217: unloading. In this step, the cleaned battery cells can be transferred to the unloading belt by a robotic arm;

[0181] Step S218: If there are any unqualified cells, the cells are placed on the second storage rack. In this step, if unqualified cells are found during weighing, the unqualified cells are transferred to the second storage rack by a robotic arm.

[0182] Step S219: Pairing.

[0183] Referring to FIG7 , the method further includes:

[0184] Step S2061: Assembling a tray. In this step, a preset number of cells are transferred to a storage assembly by a first transfer assembly.

[0185] Step S2062: Determine whether the number of cells in the assembly panel is equal to a preset value. If not, continue assembly. If yes, proceed to the next step.

[0186] Step S2071: cleaning;

[0187] Step S2072: Determine whether each liquid injection cup has been cleaned. If not, continue cleaning. If completed, proceed to the next step.

[0188] Referring to FIG8 , the method further includes:

[0189] Step S2091: Storing components, wherein the storage components may be a tray for placing battery cells, which is not limited here and can be specifically designed according to actual requirements;

[0190] Step S2092: starting the transfer conveyor line;

[0191] Step S2093: Whether it has moved to the preset position, if not, the transfer conveyor line continues to move, if it has moved to the preset position, the transfer conveyor line stops moving;

[0192] Step S2094: The electric telescopic rod is started.

[0193] The various steps in this application can refer to the embodiments in the above system and will not be described in detail here.

[0194] This application proposes a battery filling method, comprising:

[0195] Production step: producing battery cells, wherein the production method of the battery cells can refer to the existing battery cell production and manufacturing method, which will not be repeated here;

[0196] Detection step: Detecting the weight and barcode of the battery cell. In this step, the weight and barcode of the battery cell can be detected by a weight sensor and a barcode scanner. For details, please refer to the above description and will not be repeated here.

[0197] Closing the cover: placing the liquid filling cup on the battery cell that has passed the weight and barcode test. In this step, the liquid filling cup can be placed on the qualified battery cell by a robotic arm.

[0198] Lifting step: Move the covered battery cell to the production line above the inspection step;

[0199] Liquid injection step: Use the liquid injection assembly to inject electrolyte into the battery cell. The liquid injection assembly may include a liquid injection rack, a liquid injection head, a liquid injection pump, and an electrolyte tank. The liquid injection head and the electrolyte tank are arranged on the liquid injection rack, and the liquid injection pump is arranged on the electrolyte tank. The liquid injection head is connected to the outlet end of the liquid injection pump through a tube body, and the inlet end of the liquid injection pump is connected to the inside of the electrolyte tank through a tube body. When in use, by starting the liquid injection pump, the electrolyte in the electrolyte tank can be transported to the liquid injection head. Of course, it is understandable that the above-mentioned liquid injection assembly can also be other structures, for example, the liquid injection assembly includes an automatic syringe, etc., which is not limited here.

[0200] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery filling system, characterized in that: include: A conveying platform, the conveying platform comprising a first conveying line, the first conveying line being used to convey battery cells; A pallet assembly, comprising a first transfer assembly, a drive member, and at least two storage assemblies, wherein the first transfer assembly is used to transfer the battery cells to the storage assemblies, and the drive member is used to move the storage assemblies to the first conveyor line; A cover assembly, comprising a second transfer assembly and a liquid filling cup, wherein the second transfer assembly is used to place the liquid filling cup into the liquid filling hole of the battery cell; A liquid injection assembly, used for injecting electrolyte from the liquid injection cup into the battery cell; An execution module is electrically connected to the first transfer component and is used to control the first transfer component to grab the battery cells on the first conveyor line.

2. The battery filling system according to claim 1, characterized in that: The conveying platform also includes a frame and a barcode scanning component. The barcode scanning component is arranged on the frame and is used to scan and read the barcode of the battery cell on the first conveying line.

3. The battery filling system according to claim 2, characterized in that: The conveying platform further includes a first weighing assembly, which is arranged at the rack. After the battery cell is scanned, the first conveying line conveys the battery cell to the first weighing assembly, and the first weighing assembly is used to weigh the battery cell. Under the condition that the battery cell scanned and read by the code scanning component is normal and the weight of the battery cell weighed by the first weighing group is qualified, the first transfer component transfers the battery cell to the storage component.

4. The battery filling system according to claim 3, characterized in that: The conveying platform further includes a first pitch-changing assembly, the first pitch-changing assembly includes a first pitch-changing manipulator, and the first pitch-changing manipulator is disposed on the frame; After the battery cells are weighed, the first variable-distance manipulator is used to adjust the distance between two adjacent battery cells on the first conveyor line.

5. The battery filling system according to claim 3, characterized in that: It also includes a first placement rack. When at least one battery cell in a group of battery cells scanned and read by the code scanning component is abnormal or the weight of at least one battery cell in a group of battery cells weighed by the first weighing group is unqualified, the first transfer component transfers all of the group of battery cells to the first placement rack.

6. The battery filling system according to claim 5, characterized in that: The battery filling system further includes a first cache component, which is disposed at the rack; The execution module controls the movement of the first transfer component, and the first cache component is used to transfer a single battery cell that has passed the code scanning and weighing in a group of battery cells on the first placement rack to the first cache component.

7. The battery filling system according to claim 3, characterized in that: The cleaning assembly further comprises a first mechanical arm and a cleaning gun, wherein the first mechanical arm is arranged on the frame, and the cleaning gun is arranged on the first mechanical arm; Under the condition that the second transfer component transfers the liquid injection cup to the storage component, the first conveyor line drives the storage component to move to the cleaning component, and the first robotic arm drives the cleaning gun to move to the liquid injection cup.

8. The battery filling system according to claim 7, characterized in that: The system further comprises a lifting assembly and a second conveying line, wherein the lifting assembly is arranged on the frame, the second conveying line is located above the first conveying line along the height direction of the frame, and the injection assembly is located at the second conveying line; Under the condition that the second transfer component places the cleaned liquid filling cup into the liquid filling hole of the battery cell, the first conveyor line drives the storage component to move to the lifting component, and the lifting component transfers the storage component to the second conveyor line.

9. The battery filling system according to claim 8, characterized in that: The lifting assembly includes a bracket, a lifting rod, a lifting plate and a transfer conveyor line; The bracket is arranged on the frame, the fixed end of the lifting rod is arranged on the bracket, the telescopic end of the lifting rod is connected to the lifting plate, and the transfer conveyor line is arranged on the lifting plate; When the first conveyor line drives the storage assembly to move to the lifting plate, the transfer conveyor line moves the storage assembly from the first conveyor line to above the transfer conveyor line.

10. The battery filling system according to claim 9, characterized in that: The lifting assembly further includes at least two limiting assemblies, each of which includes an electric telescopic rod, which is arranged on the lifting plate, and the telescopic direction of the electric telescopic rod is perpendicular to the plane where the lifting plate is located; the two electric telescopic rods are correspondingly located on both sides of the transfer conveyor line along the movement direction; When the storage assembly is located at the first conveyor line, the electric telescopic rod is in an initial state, and when the storage assembly moves from the first conveyor line to the transfer conveyor line, the electric telescopic rod extends.

11. The battery filling system according to claim 8, characterized in that: It also includes a second cache component, which is arranged on the second conveying line; When the liquid injection assembly is in working state, the second conveying line is used to transfer the storage component together with the battery cells on the storage component to the second cache component.

12. The battery filling system according to claim 8, characterized in that: It also includes a stationary component and a grabbing component, wherein the stationary component is arranged on the frame, and the grabbing component is arranged on the stationary component; The second conveying line conveys the battery cells that have been injected to the stationary component, and the grabbing component transfers the storage component together with the battery cells on the storage component to the stationary component.

13. The battery filling system according to claim 12, characterized in that: It also includes a cover removal assembly, the cover removal assembly includes a second mechanical arm, and the second mechanical arm is arranged on the frame; Under the condition that the grabbing component transfers the storage component on the stationary component together with the battery cell on the storage component to the first conveyor line, the first conveyor line conveys the storage component to the second robotic arm, and the second robotic arm is used to remove the liquid filling cup on the battery cell on the storage component.

14. The battery filling system according to claim 13, wherein: The machine also includes a second pitch-changing assembly, the second pitch-changing assembly including a second pitch-changing manipulator, and the second pitch-changing manipulator is disposed on the frame; When the second robot arm has disassembled the liquid filling cup of the battery cell on the storage assembly, the first conveyor line drives the storage assembly to move, and the second variable-pitch robot is used to adjust the distance between two adjacent battery cells on the storage assembly.

15. The battery filling system according to claim 14, characterized in that: It also includes a second weighing component, which is arranged on the frame. After the battery cell completes the distance change after the cover is removed, the first conveyor line conveys the battery cell to the second weighing component, and the second weighing component is used to weigh the weight of the battery cell.

16. The battery filling system according to claim 15, characterized in that: It also includes a cleaning component, which is arranged on the frame. Under the condition that the weight of the battery cell weighed by the second weighing component is qualified, the cleaning component is used to clean the battery cell with qualified weight.

17. The battery filling system according to claim 15, characterized in that: Also included is a second placement rack; Under the condition that at least one battery cell in a group of battery cells fails to be weighed, the first transfer component transfers all of the battery cells in the group to the second placement rack.

18. The battery filling system according to claim 17, wherein: The rack further includes a third cache component, the third cache component being disposed on the rack, and the first transfer component being configured to transfer a qualified single battery cell from the group of battery cells to the third cache component; Under the condition that the number of battery cells at the third cache assembly reaches a preset value, the first transfer assembly transfers all battery cells at the third cache assembly to the first conveying line at the same time.

19. A battery filling method, characterized in that: It includes a first conveying line, a first transfer assembly, a storage assembly, a lid closing assembly and a liquid injection assembly; The method comprises the following steps: Loading step: the first transfer component transfers the battery cells on the first conveyor line to the storage component; Transfer step: the first conveyor line transfers the storage assembly together with the battery cells on the storage assembly to the position of the cover assembly; Cover closing step: the cover closing assembly places the liquid filling cup on the battery cell; Liquid injection step: the liquid injection assembly injects electrolyte into the battery cell through the liquid injection cup.

20. The battery liquid filling method according to claim 19, characterized in that: The battery filling method further includes a first detection component. Before the loading step, the battery filling method further includes: The first detection step: the first transfer component transfers the battery cell to the first detection component for detection. If the detection is qualified, the first transfer component transfers the battery cell to the storage component.

21. The battery liquid filling method according to claim 20, characterized in that: The battery also includes a first weighing component. After the first weighing component passes the test, the battery filling method further includes: The first weighing step: the first transfer component transfers the battery cell to the first weighing component. If the weighing is qualified, the first transfer component transfers the battery cell to the storage component.

22. The battery liquid filling method according to claim 21, characterized in that: The battery filling method further includes a cleaning component. Before the cover assembly places the filling cup on the battery cell, the battery filling method further includes: Cleaning step: the cleaning component cleans the liquid injection cup.

23. The battery liquid filling method according to claim 19, characterized in that: The battery filling method further includes a lifting assembly. After the cover closing step, the battery filling method further includes: Lifting step: the lifting assembly moves the battery cell together with the liquid injection cup on the battery cell to a preset position.

24. A battery filling method, characterized in that: include: Production steps: production of battery cells; Detection step: detecting the weight and barcode of the battery cell; Closing steps: Place the filling cup on the battery cell that has qualified weight and barcode; Lifting step: Move the covered battery cell to the production line above the inspection step; Liquid injection step: injecting electrolyte into the battery cell using the liquid injection assembly.

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