Feeding methods, feeding systems, and battery production lines

Abstract

The present application provides a feeding method, a feeding system, and a battery production line. The method comprises the steps of: controlling a first transport vehicle and a second transport vehicle to transport a first raw material and a second raw material to a first parking space and a second parking space, respectively; controlling a third transport vehicle to go to a third parking space; controlling a drive assembly to transfer a first load tray loaded with the first raw material from the first transport vehicle to a raw material handling position; controlling a mechanical hand to transfer the first raw material from the raw material handling position to a raw material placement position until the first load tray becomes a first empty tray; controlling a drive assembly to transfer the first empty tray to the third transport vehicle; then controlling a drive assembly to transfer the second raw material to the raw material handling position; controlling a mechanical hand to transfer the second raw material from the raw material handling position to a raw material placement position until the second load tray becomes a second empty tray; and controlling a drive assembly to transfer the second empty tray to the first transport vehicle. Thus, the drive assembly is controlled to reach any parking space, allowing each transport vehicle to not only load raw materials but also place empty trays.

Description

Technology Field

[0001] Cross-reference of related applications

[0002] This application claims priority to Chinese patent application 2024100151556 filed on January 4, 2024, all of which are incorporated herein by reference.

[0003] Technology field

[0004] The present invention relates to the field of battery technology, and in particular to a feeding method, a feeding system, and a battery production line. Background Technology

[0005] Batteries are widely applied in new energy fields such as electric vehicles and new energy vehicles, and these vehicles are establishing themselves as a new development trend in the automotive industry. The battery production process is commonly associated with the feeding of workpieces; while the feeding efficiency of workpieces significantly impacts battery production efficiency, current feeding efficiencies are relatively low.

[0006] The feeding method, feeding system, and battery production line provided by the present application aim to solve the problem of low feeding efficiency in related technologies.

[0007] In order to solve the above technical problem, one technical solution of the present application is to provide a feeding method applied to an automatic feeding system, wherein the feeding method is

[0008] A step of controlling a first transport vehicle to transport a first road tray loaded with a first raw material to a first parking space;

[0009] A step of controlling a second transport vehicle to transport a second road tray loaded with second raw materials to a second parking space;

[0010] A step of controlling the empty third transport vehicle to reach the third parking space;

[0011] A step of controlling a drive assembly to transfer the first load trays loaded with the first raw material in the first transport vehicle one by one to a raw material handling position until the first transport vehicle becomes empty;

[0012] A step of controlling a mechanical hand to transfer the first raw material at the raw material handling position one by one from the first load tray to the raw material seating position until the first load tray becomes the first empty tray;

[0013] A step of controlling the drive assembly to transfer the first empty trays at the raw material handling location to the third transport vehicle one by one until all of the first load trays in the first transport vehicle are transferred to the third transport vehicle;

[0014] In response to the drive assembly transferring the last first empty tray of the raw material handling position, a step of controlling the drive assembly to transfer the second load trays loaded with the second raw material in the second transport vehicle one by one to the raw material handling position until the second transport vehicle becomes empty;

[0015] A step of controlling the mechanical hand to transfer the second raw material at the raw material handling position one by one from the second load tray to the raw material seating position until the second load tray becomes a second empty tray;

[0016] The method includes the step of controlling the drive assembly to transfer the second empty tray at the raw material handling location to the first transport vehicle until all of the second load trays in the second transport vehicle are transferred to the first transport vehicle.

[0017] The above feeding method controls a drive assembly to enable reciprocating movement between a raw material handling position, a first parking space, a second parking space, and a third parking space, and allows the drive assembly to reach all parking spaces. By placing one drive assembly in each parking space, there is no need to transfer raw materials and empty trays, thereby reducing the number of assemblies. Furthermore, by controlling the drive assembly to transfer the second empty tray at the raw material handling position to the first transport vehicle, the first transport vehicle loaded with raw materials can also receive the empty tray. Consequently, if the third transport vehicle becomes fully loaded with empty trays and needs to be replaced, the machine hand can continue to transfer raw materials from the second transport vehicle without having to stop the machine and wait for the third transport vehicle to be replaced, thereby accelerating the feeding speed.

[0018] In one embodiment, in response to transferring all of the first load trays from the first transport vehicle to the third transport vehicle, the third transport vehicle is controlled to transport the first empty tray from the third parking space, and the third load tray loaded with the third raw material is transported to the third parking space before the drive assembly transfers the last second empty tray of the raw material handling position.

[0019] In the above solution, the third transport vehicle not only loads the first empty tray and transports the first empty tray from the third parking space, but also loads the third raw material and transports it to the third parking space, thereby increasing the function of the third transport vehicle and making the overall feeding process faster. In addition, the drive assembly can transfer the third raw material from the third transport vehicle to the raw material handling location to replenish the raw material at the raw material handling location in a timely manner, thereby ensuring that the machine hand feeds continuously, improving the feeding speed, and further improving the production capacity (Pieces Per minute, PPM) of the feeding system.

[0020] In one embodiment, in response to the drive assembly transferring the last second empty tray of the raw material handling position, the drive assembly is controlled to transfer the third load tray loaded with the third raw material from the third load tray one by one to the raw material handling position until the third transport vehicle becomes empty; the mechanical hand is controlled to transfer the third raw material from the third load tray of the raw material handling position one by one to the raw material placement position until the third load tray becomes a third empty tray; and the drive assembly is controlled to transfer the third empty tray of the raw material handling position to the second transport vehicle until all the third load trays from the third transport vehicle are transferred to the second transport vehicle.

[0021] In the above solution, after transferring the last second empty tray, the drive assembly is controlled to additionally transfer the third load tray loaded on the third transport vehicle to the raw material handling position, and the mechanical hand is controlled to transfer the third raw material from the raw material handling position to the raw material placement position, thereby ensuring that the mechanical hand continuously feeds and improving the feeding speed. In addition, by controlling the drive assembly to transfer the third empty tray to the second transport vehicle, the second transport vehicle is enabled not only to transport the second raw material but also to transport the empty tray, thereby increasing the functionality of the second transport vehicle.

[0022] In one embodiment, in response to transferring all of the second load trays from the second transport vehicle to the first transport vehicle, the first transport vehicle is controlled to transport the second empty tray from the first parking space, and the first load tray loaded with the first raw material is transported back to the first parking space before the drive assembly transfers the last third empty tray of the raw material handling position.

[0023] In the above solution, after the first transport vehicle has taken away the second empty tray, the drive assembly transports the first load tray loaded with the first raw material back to the first parking space before transferring the last third empty tray at the raw material handling position, thereby replenishing the raw material in a timely manner and completing the feeding of the third raw material, and then the drive assembly further transfers the first raw material from the first parking space to the raw material handling position, and the mechanical hand continues to transfer the first raw material at the raw material handling position to the raw material settling position, thereby ensuring the continuous progress of the entire feeding process and preventing a situation where no raw material is present in all three parking spaces, effectively ensuring the feeding speed.

[0024] In one embodiment, in response to the drive assembly transferring the last third empty tray of the raw material handling position, the drive assembly is controlled to transfer the first load tray loaded with the first raw material from the first transport vehicle one by one to the raw material handling position until the first transport vehicle becomes empty; the mechanical hand is controlled to transfer the first raw material from the first load tray of the raw material handling position one by one to the raw material placement position until the first load tray becomes the first empty tray; and the drive assembly is controlled to transfer the first empty tray of the raw material handling position one by one to the third transport vehicle until all the first load trays from the first transport vehicle are transferred to the third transport vehicle; And in response to transferring all of the third road trays from the third transport vehicle to the second transport vehicle, the second transport vehicle is controlled to transport the third empty tray from the second parking space, and before the drive assembly transfers the last first empty tray at the raw material handling position, the second road tray loaded with the second raw material is transported back to the second parking space.

[0025] In the above solution, after the feeding of the third raw material is completed, the drive assembly is controlled to transfer the first raw material from the first transport vehicle so that the mechanical hand can continuously feed it; and the second transport vehicle may also be controlled simultaneously to take the third empty tray; and before the feeding of the first raw material is completed, the second transport vehicle is additionally controlled to transport the second load tray loaded with the second raw material to the second parking space so that after the feeding of the first raw material is completed, the drive assembly can continue to transfer the second raw material from the second transport vehicle. In addition, the first empty tray may be transferred to and transported by the third transport vehicle.

[0026] In one embodiment, the step of controlling the second transport vehicle to transport the second load tray loaded with the second raw material to the second parking space includes the step of controlling the second transport vehicle so that the drive assembly reaches the second parking space before transferring the last first empty tray of the raw material handling position.

[0027] In the above solution, after the feeding of the first raw material is completed, the driving assembly is enabled to transfer the second raw material from the second transport vehicle in the second parking space to the raw material handling position, thereby ensuring normal feeding of the mechanical hand and preventing the driving assembly from waiting for the second transport vehicle loaded with the second raw material to reach the second parking space, so that the feeding speed can be effectively ensured.

[0028] Another technical solution used in this application to solve the above technical problem is to provide a feeding system, wherein the feeding system comprises a feeding device, a transport device, and a control circuit; wherein the feeding device comprises a driving assembly, a transmission assembly, and a mechanical hand; wherein the feeding device comprises a first parking space, a second parking space, a third parking space, a raw material handling location, and a raw material placement location; wherein the transmission assembly is configured to take raw materials from the raw material placement location through the raw material placement location; wherein the transport device comprises a first transport vehicle, a second transport vehicle, and a third transport vehicle; and wherein the control circuit is electrically connected to the feeding device and the transport device, respectively; wherein the control circuit is configured to control the operation of the feeding system by the feeding method described above.

[0029] In the above solution, the drive assembly can reciprocate between the raw material handling location, the first parking space, the second parking space, and the third parking space; that is, since the drive assembly can reach all parking spaces, there is no need to place one drive assembly in each parking space, thereby reducing the number of assemblies in the entire feeding system. Furthermore, the first, second, and third transport vehicles of the feeding system can not only transport raw materials to the corresponding parking spaces but also take empty trays. In the process where a transport vehicle from one parking space takes an empty tray and needs to be replaced, the drive assembly can place the empty tray onto a transport vehicle in another parking space, thus eliminating the need to wait for the transport vehicle to return, thereby accelerating the feeding speed.

[0030] In one embodiment, the loading capacity of the first transport vehicle, the second transport vehicle, and the third transport vehicle is the same; the first parking space, the second parking space, and the third parking space are installed on the same side of the transmission assembly, and the third parking space is installed between the first parking space and the second parking space along the transmission direction of the transmission assembly; and the raw material handling position is installed above the third parking space.

[0031] In the above solution, by ensuring that the first parking space, the second parking space, and the third parking space are installed on the same side of the transmission assembly, the process of the transmission assembly taking the raw material from the raw material placement position can be prevented from interfering with the process of the driving assembly and the mechanical hand transferring the raw material. In addition, by ensuring that the third parking space is installed between the first parking space and the second parking space along the transmission direction of the transmission assembly and that the raw material handling position is installed above the third parking space, the movement path of the driving assembly transferring the first raw material and the second raw material is basically the same, thereby reducing the stroke of the driving assembly transferring the first raw material or the second raw material and accelerating the feeding speed.

[0032] In one embodiment, the drive assembly comprises: a first lifting mechanism installed corresponding to the first parking space, which lifts the first load tray loaded with the first raw material from the first transport vehicle one by one to a first preset position and places the second empty tray at the first preset position one by one onto the empty first transport vehicle; a second lifting mechanism installed corresponding to the second parking space, which lifts the second load tray loaded with the second raw material from the second transport vehicle one by one to a second preset position and places the third empty tray at the second preset position one by one onto the empty second transport vehicle; a second lifting mechanism installed along the transmission direction of the transmission assembly to set the raw material handling position between the first preset position and the second preset position; and a third lifting mechanism installed corresponding to the third parking space, which lifts the third load tray loaded with the third raw material from the third transport vehicle one by one to the raw material handling position and places the first empty tray at the raw material handling position one by one onto the empty third transport vehicle. It includes a translation mechanism installed above the first parking space, the second parking space, and the third parking space, and moving along the transmission direction of the transmission assembly to any one position at the first preset position, the raw material handling position, and the second preset position; and configured to move the first load tray loaded with the first raw material to the raw material handling position as the first preset position, move the second load tray loaded with the second raw material to the raw material handling position as the second preset position, move the second empty tray at the raw material handling position to the first preset position, and move the third empty tray at the raw material handling position to the second preset position.

[0033] In the above solution, a lifting mechanism is used to lift the load trays at corresponding positions one by one to a preset position, a translation mechanism is used to transfer the load tray loaded with raw materials at the preset position to the raw material handling position, an empty tray at the raw material handling position is transferred to one of the preset positions, and the empty tray is placed on an empty transport vehicle using the lifting mechanism at the corresponding position, thereby enabling the feeding of raw materials and the transfer of empty trays. In addition, the translation mechanism moves to any one position among the first preset position, the raw material handling position, and the second preset position, so that the translation mechanism can transfer all raw materials at any one position to the raw material handling position, and the number of translation mechanisms can be reduced by transferring the empty tray at the raw material handling position to an empty vehicle at any one position.

[0034] Another technical solution used in this application to solve the above technical problem is to provide a battery production line, wherein the battery production line includes a case loading system and the feeding system described above; the case loading system is configured to mount a battery cell inside a case; and the feeding system is configured to transfer the case to the case loading system.

[0035] In the above-mentioned battery production line, the driving assembly of the feeding system can reciprocate between the raw material handling location, the first parking space, the second parking space, and the third parking space; that is, the driving assembly can reach all parking spaces. Since there is no need to place a driving assembly in each parking space, the number of assemblies in the entire feeding system can be reduced. Furthermore, the first, second, and third transport vehicles of the feeding system can not only transport raw materials to the corresponding parking spaces but also take empty trays. In the process where a transport vehicle from one parking space takes an empty tray and needs to be replaced, the driving assembly can place the empty tray onto a transport vehicle in another parking space, thereby eliminating the need to wait for the transport vehicle to return. This accelerates the feeding speed and further improves the speed of mounting battery cells into the case.

[0036] The above description is merely an overview of the technical solution of the present application. In order to enable a clearer understanding of the technical solution of the present application, and to enable a clearer and easier understanding of the above and other objectives, features, and advantages of the present application, specific embodiments of the present application are specifically listed below. Brief explanation of the drawing

[0037] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become apparent to those skilled in the art. The drawings are used only for the purpose of illustrating preferred embodiments and should not be construed as limiting the present application. Additionally, the same reference numerals are used throughout the drawings to denote the same components. In the drawings, FIG. 1 is a schematic flowchart of a feeding method provided in one embodiment of the present application. FIG. 2 is a plan view of a feeding system provided in one embodiment of the present application. FIG. 3 is a side view of a feeding system provided in one embodiment of the present application. Specific details for implementing the invention

[0038] Hereinafter, embodiments of the technical solution of the present application will be described in detail with reference to the attached drawings. The following embodiments are merely examples to more clearly explain the technical solution of the present application and are not intended to limit the scope of protection of the present application.

[0039] Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as generally understood by a person skilled in the art to which this application pertains; the terms used in this document are used merely for the purpose of describing specific embodiments and are not intended to limit this application; and the terms “include” and “comprising” and any variations thereof used in the specification, claims, and brief description of the drawings of this application are intended to encompass non-exclusive inclusions.

[0040] In describing the embodiments of the present application, technical terms such as "first," "second," etc., are used merely to distinguish different objects and should not be understood as indicating or implying relative importance, or implying the number, specific order, or master-slave relationship of the technical features mentioned. In describing the embodiments of the present application, "plural" means two or more unless otherwise clearly and specifically limited.

[0041] References to "Examples" in this document mean that specific features, structures, or properties described with reference to the Examples may be included in at least one of the Examples of this Application. Such phrases located in various places within the specification do not necessarily refer to the same Example, nor do they refer to separate or alternative Examples that are mutually exclusive from other Examples. Those skilled in the art may understand, expressly and implicitly, that the Examples described herein may be combined with other Examples.

[0042] In describing the embodiments of the present application, the term "and / or" is used to describe the relationship between related objects and indicates that three types of relationships may exist; for example, A and / or B may represent three cases: A alone exists, A and B exist simultaneously, or B alone exists. Additionally, the character symbol " / " in the present application generally indicates that the preceding and succeeding related counterparts are in an "or" relationship.

[0043] In describing the embodiments of the present application, the term “multiple” means two or more (including two), likewise “multiple groups” means two or more groups (including two groups), and “multiple sheets” means two or more sheets (including two sheets).

[0044] In describing the embodiments of the present application, technical terms such as “center,” “vertical,” “horizontal,” “length,” “width,” “thickness,” “top,” “bottom,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inside,” “outside,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circular” indicate orientations or positional relationships based on the orientations or positional relationships depicted in the accompanying drawings. These terms are intended merely for convenience and simplification of the description of the embodiments of the present application and do not specify or imply that the mentioned devices or components must have a specific orientation or be configured and operated in a specific orientation; therefore, they should not be understood as limitations on the embodiments of the present application.

[0045] In describing the embodiments of this application, technical terms such as “mounting,” “interconnection,” “connection,” and “fixing” should be understood in a broad sense, for example, they may be fixed connections, detachable connections, or integral connections; they may also be mechanical connections or electrical connections; they may also be direct connections or indirect connections through an intermediate medium; and they may be internal communication between two components or an interactive relationship between two components. A person skilled in the art will be able to understand the specific meaning of the above terms in the embodiments of this application depending on the specific case.

[0046] The current common method of material supply generally involves manually pushing a material basket carrying the workpiece to a pickup location, having a mechanical hand pick up the workpiece from the pickup location, and then using an empty small vehicle to retrieve the empty material basket from the material unloading location. This method results in low feeding efficiency because feeding and unloading must be performed frequently by hand.

[0047] In related technologies, a fully automatic feeding method is sometimes used, in which a compact car is controlled to automatically push a material basket loaded with workpieces into a pickup position, a mechanical arm picks up the workpiece from the pickup position, and then a drive member places an empty material basket onto an empty compact car, after which the empty compact car is fully loaded with empty material baskets and transports them.

[0048] The inventor of the present application has previously designed a feeding system comprising a first transport vehicle, a second transport vehicle, an empty vehicle located between the first and second transport vehicles, a first lateral movement mechanism, a second lateral movement mechanism, and a mechanical hand. The first transport vehicle transports a first road tray loaded with a first raw material to a first parking space; the first lateral movement mechanism can move between a raw material handling location and a first parking space to transfer the first raw material to the raw material handling location. The second transport vehicle transports a first road tray loaded with a second raw material to a second parking space; the second lateral movement mechanism can move between a raw material handling location and a second parking space to transfer the second raw material to the raw material handling location. The empty vehicle is located in a third parking space. The mechanical hand takes the raw material from the road tray at the raw material handling location and places the raw material at the raw material placement location; places the empty tray at the raw material handling location onto the empty vehicle; After the machine hand has placed all first (or second) raw materials at the raw material loading position, the empty car is also fully loaded with empty trays; at this point, the empty car must be replaced, and the machine hand must stop the machine and wait; after the empty car returns to the third parking space, that is, after the empty car is replaced, the machine hand is reset and continues to pick up the second (or first) raw materials.

[0049] However, the inventor of the present application, through extensive research, discovered that in the above solution, the mechanical hand must stop feeding and wait for the replacement of the empty car to be completed during the process of replacing the empty car, which affects the feeding speed. Furthermore, the first lateral movement mechanism and the second lateral movement mechanism can only move between corresponding parking spaces and raw material handling positions and cannot move to all parking spaces, so the stroke of the lateral movement mechanism is short, resulting in a large number of lateral movement mechanisms and a single function. Also, the first transport car and the second transport car can only load raw materials and cannot load empty trays; and the empty car can only load empty trays and cannot load raw materials.

[0050] Based on this, the feeding system provided in the embodiment of the present application enables the drive assembly to reach all parking spaces and configures the program to not only load raw materials onto multiple transport vehicles but also load empty trays; thus, when replacing a transport vehicle loaded with empty trays, the mechanical hand does not need to stop the machine and wait, thereby increasing the feeding speed.

[0051] The present application will be described in detail below in conjunction with the attached drawings and examples.

[0052] Referring to FIGS. 1–3, FIG. 1 is a flowchart of a feeding method provided in one embodiment of the present application; FIG. 2 is a plan view of a feeding system provided in one embodiment of the present application; and FIG. 3 is a side view of a feeding system provided in one embodiment of the present application. The present embodiment provides a feeding method applied to an automatic feeding system, wherein the automatic feeding system comprises a first parking space, a second parking space, a third parking space, a raw material handling position (A), and a raw material placement position (B). The feeding method comprises the following steps:

[0053] Step (S1): Control the first transport vehicle (21) to transport the first road tray loaded with the first raw material to the first parking space.

[0054] Step (S2): Control the second transport vehicle (22) to transport the second road tray loaded with the second raw material to the second parking space.

[0055] Step (S3): Control the empty third transport vehicle (23) to reach the third parking space.

[0056] Step (S4): Control the drive assembly until the first transport vehicle (21) becomes empty to transfer the first load trays loaded with the first raw material from the first transport vehicle (21) one by one to the raw material handling position (A).

[0057] Step (S5): Control the machine hand to transfer the first raw material from the first raw material handling position (A) one by one to the raw material placement position (B) until the first load tray becomes the first empty tray.

[0058] Step (S6): Control the drive assembly to transfer the first empty trays from the raw material handling position (A) one by one to the third transport vehicle (23) until all the first load trays from the first transport vehicle (21) are transferred to the third transport vehicle (23).

[0059] Step (S7): In response to the drive assembly transferring the last first empty tray of the raw material handling position (A), the drive assembly is controlled to transfer the second load trays loaded with the second raw material from the second transport vehicle (22) one by one to the raw material handling position (A) until the second transport vehicle (22) becomes empty.

[0060] Step (S8): Control the machine hand (2) until the second load tray becomes the second empty tray to transfer the second raw material from the raw material handling position (A) one by one to the raw material placement position (B) from the second load tray.

[0061] Step (S9): Control the drive assembly to transfer the second empty trays from the raw material handling position (A) to the first transport vehicle (21) until all the second load trays from the second transport vehicle (22) are transferred to the first transport vehicle (21).

[0062] The first transport vehicle (21), the second transport vehicle (22), and the third transport vehicle (23) may be any small vehicle with wheels, such as a handcart or a workshop material cart. In some embodiments, the first transport vehicle (21), the second transport vehicle (22), and the third transport vehicle (23) may use an Automated Guided Vehicle (AGV) to transport raw materials and guide the driving of the AGV using a guidance device, such as an electromagnetic or optical device installed on the AGV, so that the AGV can drive along a designated path. The quantity of raw materials loaded by the first transport vehicle (21), the second transport vehicle (22), and the third transport vehicle (23) may be the same or different; the first transport vehicle (21), the second transport vehicle (22), and the third transport vehicle (23) may or may not be fully loaded with raw materials or empty trays each time; The present application preferably increases the loading efficiency of a transport vehicle by ensuring that the transport vehicle is fully loaded with raw materials or empty trays at every time. An empty vehicle refers to a transport vehicle that is not loaded with raw materials or road trays. An empty tray refers to a road tray that is not loaded with raw materials.

[0063] In one embodiment, the loading capacity of the first transport vehicle (21), the second transport vehicle (22), and the third transport vehicle (23) is the same, and they are all fully loaded at every time. Thus, all of the first load trays from the first transport vehicle (21) are transferred to the third transport vehicle (23), and the first empty trays are fully loaded in the third transport vehicle (23).

[0064] The first parking space, the second parking space, and the third parking space refer to three specific area locations where a transport vehicle can be seated in the feeding system. In one embodiment, the first parking space, the second parking space, and the third parking space are arranged sequentially, with the second parking space located in the center. The first raw material, the second raw material, and the third raw material may be aluminum cases, end caps, etc. The first load tray, the second load tray, and the third load tray may be any structure capable of loading materials, such as aluminum trays, trays, storage containers, etc. Each load tray may accommodate not only a single raw material but also a pile of raw material or raw materials arranged in multiple arrays.

[0065] The raw material handling location (A) refers to the location where the mechanical hand (2) picks up the raw material. The raw material placement location (B) refers to the location where the mechanical hand (2) finally places the raw material picked up from the raw material handling location (A). The raw material handling location (A) and the raw material placement location (B) can be partitioned according to the specific areas located in the space. For example, the M area may be designated as the raw material handling location (A) and the N area as the raw material placement location (B), and a gap may be provided between the M area and the N area. The driving assembly and the mechanical hand (2) may include a driving member, a clamping member, or an adsorption member, etc., to pick up and transfer the raw material. In one embodiment, the raw material placement location (B) is an area in the transmission assembly (4), so that the raw material at the raw material placement location (B) is transferred to another work location by the transmission assembly (4). The raw material handling location (A) may be an area above any one of the parking spaces in the first parking space, the second parking space, and the third parking space. In one embodiment, the raw material handling location (A) is the upper area of ​​the second parking space.

[0066] The "transfer one by one" mentioned in the present application may refer to transferring one by one, or transferring multiple items as a group by group. For example, the driving assembly transferring the first load tray loaded with the first raw material from the first transport vehicle (21) one by one to the raw material handling position (A) may be the driving assembly transferring multiple first load trays from the first transport vehicle (21) one by one to the raw material handling position (A); the mechanical hand (2) may transfer the first raw material from the raw material handling position (A) one by one to the raw material placement position (B), and the driving assembly may additionally transfer the first empty tray from the raw material handling position (A) one by one to the corresponding empty vehicle. Alternatively, when the first load tray in the first transport vehicle (21) is divided into multiple layers and a plurality of first load trays are placed in each layer, the drive assembly can transfer all first load trays in one layer to the raw material handling position (A) each time, and the mechanical hand (2) can transfer all first raw materials placed in the raw material handling position (A) to the raw material placement position (B) each time, and the drive assembly can additionally transfer all first empty trays in the raw material handling position (A) to the corresponding empty vehicle each time. Alternatively, if the first load tray in the first transport vehicle (21) is divided into multiple layers and multiple first load trays are placed on each layer, the driving assembly can transfer one first load tray to the raw material handling position (A) each time according to the layer, and the mechanical hand (2) can transfer all first raw materials placed at the raw material handling position (A) to the raw material placement position (B) each time, and the driving assembly can additionally transfer all first empty trays at the raw material handling position (A) to the corresponding empty vehicle each time.

[0067] The above method allows the drive assembly to be controlled to move back and forth between the raw material handling location (A), the first parking space, the second parking space, and the third parking space, and enables the drive assembly to reach all parking spaces. By placing one drive assembly in each parking space, there is no need to transfer raw materials and empty trays, thereby reducing the number of assemblies. Furthermore, the method allows the first transport vehicle (21), loaded with raw materials, to place empty trays by controlling the drive assembly to transfer the second empty tray from the raw material handling location (A) to the first transport vehicle (21). This allows the first transport vehicle (21) to be loaded with raw materials and then receive empty trays. Consequently, when the third transport vehicle (23) is fully loaded with empty trays and needs to be replaced, the machine hand can continue to transfer raw materials from the second transport vehicle (22) without needing to stop the machine and wait for the third transport vehicle (23) to be replaced, thereby accelerating the feeding speed. In one embodiment, in response to transferring all of the first load trays from the first transport vehicle (21) to the third transport vehicle (23), the third transport vehicle (23) is controlled to transport the first empty tray from the third parking space, and the third load tray loaded with the third raw material is transported to the third parking space before the drive assembly transfers the last of the second empty trays from the raw material handling position (A). Thus, the drive assembly can transfer the third raw material from the third transport vehicle (23) immediately after transferring the last of the second empty trays from the raw material handling position (A) to the first transport vehicle (21), so that the mechanical hand (2) does not need to wait.

[0068] Here, the third transport vehicle (23) that transports the third road tray loaded with the third raw material to the third parking space may be the same third transport vehicle (23) that transports the first empty tray from the third parking space, that is, the third transport vehicle (23) transports the first empty tray from the third parking space, unloads it, and then loads the third raw material again and transports it to the third parking space; thereby, the number of transport vehicles required for the feeding system can be reduced and costs can be reduced.

[0069] Of course, in other embodiments, the third transport vehicle (23) that transports the third road tray loaded with the third raw material to the third parking space may be two different transport vehicles from the third transport vehicle (23) that transports the first empty tray from the third parking space. In such embodiments, after the third transport vehicle (23) moves from the third parking space, the next third transport vehicle (23) can be controlled to transport the third road tray loaded with the third raw material to the third parking space. This allows the drive assembly to transport the third raw material from the third transport vehicle (23) immediately after transferring the last second empty tray of the raw material handling position (A). Of course, after the third transport vehicle (23) moves from the third parking space, the next third transport vehicle (23) is controlled again after a preset time to transport the third road tray loaded with the third raw material to the third parking space, thereby saving time to perform cleaning, inspection, or maintenance on the third parking space. The preset time can be set according to the actual situation, and the drive assembly can transport the third load tray loaded with the third raw material to the third parking space before transferring the last second empty tray of the raw material handling position (A).

[0070] In the above solution, the third transport vehicle (23) can increase the function of the third transport vehicle (23) by loading the first empty tray and transporting the first empty tray from the third parking space, as well as loading the third raw material and transporting it to the third parking space, thereby making the overall feeding process faster. In addition, the drive assembly can transfer the third raw material from the third transport vehicle (23) to the raw material handling position (A) to replenish the raw material at the time, thereby ensuring that the mechanical hand (2) feeds continuously, improving the feeding speed, and further improving the production capacity (Pieces Per minute, PPM) of the feeding system.

[0071] In one embodiment, in response to the drive assembly transferring the last second empty tray of the raw material handling position (A), the drive assembly is controlled to transfer the third load trays loaded with the third raw material from the third transport vehicle (23) one by one to the raw material handling position (A) until the third transport vehicle (23) becomes empty; the mechanical hand (2) is controlled to transfer the third raw material from the third load tray of the raw material handling position (A) one by one to the raw material placement position until the third load tray becomes the third empty tray; and the drive assembly is controlled to transfer the third empty tray of the raw material handling position (A) to the second transport vehicle (22) until all the third load trays from the third transport vehicle (23) are transferred to the second transport vehicle (22). Thus, the mechanical hand (2) does not need to wait.

[0072] Here, the drive assembly and the mechanical hand (2) can work in cooperation, so that the drive assembly transfers one or one group of third raw materials to the raw material handling location (A) each time, and the mechanical hand (2) transfers the corresponding third raw material or the corresponding group of third raw materials to the raw material placement location (B); at this time, the drive assembly transfers the corresponding third empty tray to the second transport vehicle (22); then, the drive assembly moves to the third parking space and again picks up the next or next group of third raw materials and transfers them to the raw material handling location (A), and the mechanical hand (2) continues to transfer the corresponding third raw material or the corresponding group of third raw materials to the raw material placement location (B), at this time, the drive assembly continues to transfer the corresponding third empty tray to the second transport vehicle (22), then returns to the third parking space again, and proceeds in this cycle until all the third load trays from the third transport vehicle (23) are transferred to the second transport vehicle (22).

[0073] In the above solution, after transferring the last second empty tray, the drive assembly is controlled to transfer the third load tray loaded on the third transport vehicle (23) to the raw material handling position (A), and the mechanical hand (2) is controlled to transfer the third raw material at the raw material handling position (A) to the raw material placement position (B), thereby ensuring that the mechanical hand (2) continuously feeds and improving the feeding speed. In addition, by controlling the drive assembly to transfer the third empty tray to the second transport vehicle (22), the second transport vehicle (22) is not only able to transport the second raw material but also transport the empty tray, thereby increasing the functionality of the second transport vehicle (22).

[0074] In one embodiment, in response to transferring all of the second load trays from the second transport vehicle (22) to the first transport vehicle (21), the first transport vehicle (21) is controlled to transport the second empty tray from the first parking space, and the first load tray loaded with the first raw material is transported back to the first parking space before the drive assembly transfers the last third empty tray of the raw material handling position (A).

[0075] Here, the first transport vehicle (21) transporting the first road tray loaded with the first raw material to the first parking space may be the same transport vehicle as the first transport vehicle (21) transporting the second empty tray from the first parking space, or it may be two different transport vehicles. The specific transport method is similar to the feeding method described above, in which the third transport vehicle (23) is controlled to transport the first empty tray from the third parking space, and the drive assembly transports the third road tray loaded with the third raw material to the third parking space before transferring the last second empty tray at the raw material handling position (A), and is therefore not described further here.

[0076] In the above solution, after the first transport vehicle (21) transports and takes away the second empty tray, the drive assembly transports the first load tray loaded with the first raw material to the first parking space before transferring the last third empty tray at the raw material handling location (A) to replenish the raw material in time and complete the feeding of the third raw material, and then the drive assembly additionally transfers the first raw material from the first parking space to the raw material handling location (A), and the mechanical hand (2) continues to transfer the first raw material from the raw material handling location (A) to the raw material placement location (B), thereby ensuring the continuous progress of the entire feeding process and effectively ensuring the feeding speed by preventing a situation where no raw material exists in all three parking spaces. In addition, the first transport vehicle (21) not only loads the second empty tray and transports the second empty tray from the first parking space; but also loads the first raw material and transports it to the first parking space, thereby increasing the function of the first transport vehicle (21) and making the overall feeding process faster.

[0077] In one embodiment, in response to the drive assembly transferring the last third empty tray of the raw material handling position (A), the drive assembly is controlled to transfer the first load tray loaded with the first raw material from the first transport vehicle (21) one by one to the raw material handling position (A) until the first transport vehicle (21) becomes empty; the mechanical hand (2) is controlled to transfer the first raw material from the first load tray of the raw material handling position (A) one by one to the raw material placement position (B) until the first load tray becomes the first empty tray; and the drive assembly is controlled to transfer the first empty tray of the raw material handling position (A) one by one to the third transport vehicle until all the first load trays from the first transport vehicle (21) are transferred to the third transport vehicle (23); In response to transferring all third road trays from the third transport vehicle (23) to the second transport vehicle (22), the second transport vehicle (22) is controlled to transport the third empty tray from the second parking space, and the second road tray loaded with the second raw material is transported to the second parking space again before the drive assembly transfers the last first empty tray of the raw material handling position (A).

[0078] Here, the step of “in response to transferring all third road trays from the third transport vehicle (23) to the second transport vehicle (22), controlling the second transport vehicle (22) to transport the third empty tray from the second parking space, and transporting the second road tray loaded with the second raw material back to the second parking space before the drive assembly transfers the last first empty tray of the raw material handling position (A)” is as follows: “in response to transferring the last third empty tray of the raw material handling position (A) by the drive assembly, controlling the drive assembly to transfer the first road tray loaded with the first raw material from the first transport vehicle (21) one by one to the raw material handling position (A) until the first transport vehicle (21) becomes empty; controlling the mechanical hand (2) to transfer the first raw material from the first road tray of the raw material handling position (A) one by one to the raw material placement position (B) until the first road tray becomes the first empty tray; and the first road tray in the first transport vehicle (21) is all the third The step of controlling the drive assembly until it is transferred to the transport vehicle (23) to transfer the first empty trays of the raw material handling position (A) one by one to the third transport vehicle can be carried out simultaneously with this step to improve feeding efficiency.

[0079] The second transport vehicle (22) that transports the second road tray loaded with the second raw material to the second parking space may be the same transport vehicle as the second transport vehicle (22) that transports the third empty tray from the second parking space, or it may be two different transport vehicles. The specific transport method is similar to the feeding method described above, in which the third transport vehicle (23) is controlled to transport the first empty tray from the third parking space, and the drive assembly transports the third road tray loaded with the third raw material to the third parking space before transferring the last second empty tray at the raw material handling position (A), and is not described further here.

[0080] In the above solution, after the feeding of the third raw material is completed, the drive assembly is controlled to transfer the first raw material from the first transport vehicle (21) so that the mechanical hand (2) can continuously feed it; and the second transport vehicle (22) can be controlled simultaneously to take the third empty tray; and before the feeding of the first raw material is completed, the second transport vehicle (22) is additionally controlled to transport the second road tray loaded with the second raw material to the second parking space so that after the feeding of the first raw material is completed, the drive assembly can continue to transfer the second raw material from the second transport vehicle (22). In addition, the first empty tray can be transferred to the third transport vehicle (23) and transported.

[0081] In one embodiment, the step of controlling the second transport vehicle (22) to transport the second road tray loaded with the second raw material to the second parking space includes the step of controlling the second transport vehicle (22) so that the drive assembly reaches the second parking space before transferring the last first empty tray of the raw material handling position (A).

[0082] In the above solution, after the feeding of the first raw material is completed, the driving assembly is made to transfer the second raw material from the second transport vehicle (22) in the second parking space to the raw material handling position (A), thereby ensuring normal feeding of the mechanical hand (2) and preventing the driving assembly from waiting for the second transport vehicle (22) loaded with the second raw material to reach the second parking space, so that the feeding speed can be effectively ensured.

[0083] In one embodiment, referring to FIGS. 2 and 3, FIG. 2 is a plan view of a feeding system provided in one embodiment of the present application; FIG. 3 is a side view of a feeding system provided in one embodiment of the present application. A feeding system is provided comprising a feeding device, a transport device, and a control circuit (not shown). The feeding device comprises a drive assembly, a transmission assembly (4), and a mechanical hand (2). The feeding device comprises a first parking space, a second parking space, a third parking space, a raw material handling location (A), and a raw material placement location (B); and the transmission assembly (4) is configured to take raw material from the raw material placement location (B) via the raw material placement location (B). The transport device comprises a first transport vehicle (21), a second transport vehicle (22), and a third transport vehicle (23). The control circuit is electrically connected to the feeding device and the transport device, respectively; and the control circuit is configured to control the operation of the feeding system by the feeding method provided in the above embodiment.

[0084] The feeding device may further include a support (7), wherein the support (7) defines a first space area, a second space area, and a third parking space area and uses them as a first parking space, a second parking space, and a third parking space, respectively.

[0085] In the above solution, the drive assembly can reciprocate between the raw material handling location (A), the first parking space, the second parking space, and the third parking space; that is, the drive assembly can reach all parking spaces, so there is no need to place one drive assembly in each parking space, thereby reducing the number of assemblies in the entire feeding system. Furthermore, the first transport vehicle (21), the second transport vehicle (22), and the third transport vehicle (23) of the feeding system can not only transport raw materials to the corresponding parking spaces but also take empty trays. In the process where the transport vehicle of one parking space takes an empty tray and the transport vehicle needs to be replaced, the drive assembly can place the empty tray onto the transport vehicle of the other parking space, so there is no need to wait for the transport vehicle to return, thereby accelerating the feeding speed.

[0086] In one embodiment, as shown in FIG. 2, the loading capacity of the first transport vehicle (21), the second transport vehicle (22), and the third transport vehicle (23) is the same; the first parking space, the second parking space, and the third parking space are installed on the same side of the transmission assembly (4), and along the transmission direction of the transmission assembly (4), the third parking space is installed between the first parking space and the second parking space; and the raw material handling position (A) is installed above the third parking space.

[0087] The loading capacity of the first transport vehicle (21), the second transport vehicle (22), and the third transport vehicle (23) refers to the total quantity of load trays that the transport vehicles can load. The upper part of the third parking space refers to the height at which the highest position is placed along the height direction of the feeding system, where the height of the position where the raw material handling position (A) is placed is higher than the space where the third parking space is placed. Along the transmission direction of the transmission assembly (4), the distance between the center position of the third parking space and the center position of the first parking space is the first distance, and the distance between the center position of the third parking space and the center position of the second parking space is the second distance; the first distance may be the same as or different from the second distance.

[0088] In the above solution, by ensuring that the first parking space, the second parking space, and the third parking space are installed on the same side of the transmission assembly (4), the process of the transmission assembly (4) taking the raw material from the raw material placement position (B) can be prevented from interfering with the process of the driving assembly and the mechanical hand (2) transferring the raw material. In addition, by ensuring that the third parking space is installed between the first parking space and the second parking space along the transmission direction of the transmission assembly (4), and that the raw material handling position (A) is installed above the third parking space, the difference in the movement path of the driving assembly transferring the first raw material and the second raw material can be reduced as much as possible, thereby reducing the stroke of the driving assembly transferring the first raw material or the second raw material and accelerating the feeding speed.

[0089] In one embodiment, referring to FIGS. 2 and 3, the drive assembly further includes a first lifting mechanism (31), a second lifting mechanism (32), and a third lifting mechanism (33). The first lifting mechanism (31) is installed corresponding to a first parking space and lifts a first load tray loaded with a first raw material from a first transport vehicle (21) one by one to a first preset position, and places a second empty tray from the first preset position onto the empty first transport vehicle (21) one by one. The second lifting mechanism (32) is installed corresponding to a second parking space and lifts a second load tray loaded with a second raw material from a second transport vehicle (22) one by one to a second preset position, and places a third empty tray from the second preset position onto the empty second transport vehicle (22) one by one. Along the transmission direction of the transmission assembly (4), a raw material handling position (A) is installed between a first preset position and a second preset position; The third lifting mechanism (33) is installed corresponding to the third parking space and lifts the third load trays loaded with the third raw material from the third transport vehicle (23) one by one to the raw material handling position (A), and places the first empty trays from the raw material handling position (A) one by one onto the empty third transport vehicle (23). The translation mechanism (5) is installed above the first parking space, the second parking space, and the third parking space, moves along the transmission direction of the transmission assembly (4), and can move to any one position in the first preset position, the raw material handling position (A), and the second preset position. The translation mechanism (5) is configured to move a first load tray loaded with a first raw material at a first preset position to a raw material handling position (A), move a second load tray loaded with a second raw material at a second preset position to a raw material handling position (A), move a second empty tray at the raw material handling position (A) to a first preset position, and move a third empty tray at the raw material handling position (A) to a second preset position.

[0090] The first lifting mechanism (31), the second lifting mechanism (32), and the third lifting mechanism (33) lift the load tray so that the load tray is separated from the corresponding transport vehicle and lift the load tray to a preset position; the load tray before and after the lifting mechanism lifts the load tray is always located in the corresponding parking space, even though a change in height occurs. Taking the first lifting mechanism (31) as an example, the first lifting mechanism (31) lifts the first load tray to a first preset position by lifting the first load tray so that the translation mechanism (5) picks up the first load tray to the raw material handling position (A); here, after the first lifting mechanism (31) lifts the first load tray, a change in height occurs along the height direction of the feeding system, but the first load tray is still located in the first parking space.

[0091] In one embodiment, the first lifting mechanism (31), the second lifting mechanism (32), and the third lifting mechanism (33) may include a lifting arm and a driving member, the lifting arm is connected to the driving member, the lifting arm is inserted between the transport vehicle and the load tray, and the driving member can drive the lifting arm to move upward to lift the load tray to a preset position. The driving member may also drive the lifting arm to move downward to prepare for the next lifting or to place an empty tray loaded thereon onto the corresponding transport vehicle.

[0092] Of course, in some other embodiments, the first lifting mechanism (31), the second lifting mechanism (32), and the third lifting mechanism (33) may include a lifting claw and a driving member, the lifting claw is connected to the driving member, the lifting claw picks up a load tray, and the driving member drives the lifting claw to move upward to lift the load tray to a preset position, or to move downward from the preset position to pick up the load tray, or to place an empty tray onto a corresponding transport vehicle. The driving member may be a linear electric cylinder, a linear cylinder, or a linear oil cylinder.

[0093] In some embodiments, the translation mechanism (5) further moves an empty tray at a raw material handling position (A) to a preset position where an empty car is located, places the empty tray on a corresponding lifting mechanism, and the lifting mechanism drops and places the empty tray loaded thereon onto the corresponding empty car. For example, the translation mechanism (5) further moves a second empty tray to a first preset position, and the first lifting mechanism (31) at the first preset position loads the second empty tray and begins to move downward to place the second empty tray onto the first transport car (21). The translation mechanism (5) may be a belt conveyor mechanism, a roller conveyor mechanism, a chain conveyor mechanism, etc.

[0094] In some embodiments, as illustrated in FIG. 2 or FIG. 3, the translation mechanism (5) may include a translation drive servo (51), a drive lever (52), and a clamping assembly (53). Moving along the transmission direction of the transmission assembly (4), the drive lever (52) and the translation drive servo (51) are connected to drive the drive lever (52) to move to any one position at a first preset position, a raw material handling position (A), and a second preset position. The clamping assembly (53) is installed on the drive lever (52), and the clamping assembly (53) clamps the load tray in accordance with the synchronized movement of the drive lever (52).

[0095] In one specific embodiment, the clamping assembly (53) includes a plurality of cylinders, and the plurality of cylinders are spaced apart along the circumferential direction to secure the load tray. In one embodiment, the number of cylinders may be four, and the four cylinders are installed facing each other in pairs, and the connecting lines of the two cylinders installed facing each other intersect each other as if perpendicular. In some other embodiments, the clamping assembly (53) may include a clamp to pick up the load tray. Alternatively, the clamping assembly (53) may further include a suction member to suction the load tray.

[0096] Referring further to FIG. 2 in some specific embodiments, the feeding system further includes a detection mechanism (6), which is installed in a clamping assembly (53) and electrically connected to the clamping assembly (53) and a translational drive servo (51), respectively, to detect whether the load tray is in place. The clamping assembly (53) clamps the load tray in response to the detection of whether the load tray is in place by the detection mechanism (6), and the translational drive servo (51) drives the drive lever (52) to move to a raw material handling position (A) or drives the drive lever (52) to move to any one parking space in the first parking space to the third parking space. Here, the detection mechanism (6) may be multiple, and the multiple detection mechanisms (6) are installed facing each other in pairs; and the clamping assembly (53) clamps the load tray in response to all of the multiple detection mechanisms (6) detecting the load tray. By doing so, it is possible to reduce the occurrence of situations where the load tray is not fully in place, the clamping assembly (53) has already clamped the load tray so that the load tray is not tightly clamped, or the clamping assembly (53) has not clamped the load tray.

[0097] In the above solution, a lifting mechanism is used to lift the load trays at corresponding positions one by one to a preset position, and a translation mechanism (5) is used to transfer the load tray loaded with raw materials at the preset position to the raw material handling position (A), and the empty tray at the raw material handling position (A) is transferred to one of the preset positions, and the empty tray is placed on an empty transport vehicle using the lifting mechanism at the corresponding position, thereby enabling the feeding of raw materials and the transfer of empty trays. In addition, the translation mechanism (5) moves to any one position at the first preset position, the raw material handling position (A), and the second preset position, so that the translation mechanism (5) can transfer all the raw materials at any one position to the raw material handling position (A), and the empty tray at the raw material handling position (A) is transferred to an empty vehicle at any one position, thereby reducing the number of translation mechanisms (5).

[0098] In one embodiment, a battery production line is further provided, said battery production line including a case loading system and the feeding system described above. The case loading system is configured to mount a battery cell into a case; and the feeding system is configured to transfer a case to the case loading system. Battery cells are applied in energy storage systems such as hydroelectric, thermal, wind, and solar power plants, as well as in electric transportation means such as electric bicycles, electric motorcycles, and electric vehicles, and in various other fields such as military equipment and aerospace.

[0099] In the above-mentioned battery production line, the drive assembly can reciprocate between the raw material handling position (A), the first parking space, the second parking space, and the third parking space, that is, the drive assembly can reach all parking spaces, and thus there is no need to place one drive assembly in each parking space, thereby reducing the number of assemblies in the entire feeding system. Furthermore, by controlling the drive assembly to transfer the second empty tray at the raw material handling position (A) to the first transport vehicle (21), the first transport vehicle (21) loaded with raw materials can also place the empty tray. In the event that the third transport vehicle (23) is fully loaded with empty trays and needs to be replaced, the machine hand can continue to transfer the raw materials without having to stop the machine and wait for the third transport vehicle (23) to be replaced, thereby accelerating the feeding speed.

[0100] Each of the above embodiments is intended only to illustrate the technical solution of the present application and is not a limitation thereto; although the present application has been described in detail with reference to each of the aforementioned embodiments, those skilled in the art may still modify the technical solution described in each of the aforementioned embodiments or substitute some or all of the technical features with equivalents; and finally, it should be noted that such modifications or substitutions shall not depart from the essence of the corresponding technical solution and shall all be included within the scope of the claims and specification of the present application. In particular, all technical features mentioned in each embodiment may be combined in any manner, provided there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein but includes all technical solutions falling within the scope of the claims. Explanation of the symbols

[0101] A: Raw material handling location B: Raw material settling position 2: Mechanical Hand 21: 1st transport car 22: 2nd transport vehicle 23: 3rd transport vehicle 31: First elevator mechanism 32: Second elevator mechanism 33: Third elevator mechanism 4: Transfer Assembly 5: Translational mechanism 51: Translational drive servo 52: Drive lever 53: Clamping Assembly 6: Detector 7: Support

Claims

Claim 1 In an automatic feeding system, the method comprises: a step of controlling a first transport vehicle to transport a first road tray loaded with a first raw material to a first parking space; a step of controlling a second transport vehicle to transport a second road tray loaded with a second raw material to a second parking space; a step of controlling a third transport vehicle, which is empty, to reach a third parking space; a step of controlling a drive assembly to transfer the first road tray loaded with the first raw material from the first transport vehicle one by one to a raw material handling position until the first transport vehicle becomes empty; a step of controlling a mechanical hand to transfer the first raw material from the raw material handling position one by one to a raw material placement position until the first road tray becomes a first empty tray; and a step of controlling the drive assembly to transfer the first empty tray from the raw material handling position one by one to the third transport vehicle until all the first road trays from the first transport vehicle are transferred to the third transport vehicle. A feeding method comprising: a step of controlling the drive assembly to transfer the second load tray loaded with the second raw material from the second transport vehicle one by one to the raw material handling location in response to the drive assembly transferring the last of the first empty trays at the raw material handling location until the second transport vehicle becomes empty; a step of controlling the mechanical hand to transfer the second raw material from the second load tray at the raw material handling location one by one to the raw material seating location until the second load tray becomes a second empty tray; and a step of controlling the drive assembly to transfer the second empty tray at the raw material handling location to the first transport vehicle until all of the second load trays at the second transport vehicle are transferred to the first transport vehicle. Claim 2 A feeding method according to claim 1, further comprising the step of controlling the third transport vehicle to transport the first empty tray from the third parking space in response to transferring all of the first load trays from the first transport vehicle to the third transport vehicle, and transporting the third load tray loaded with the third raw material to the third parking space before the driving assembly transfers the last second empty tray of the raw material handling position. Claim 3 A feeding method according to claim 2, further comprising: a step of controlling the drive assembly to transfer the third load tray loaded with the third raw material from the third load tray one by one to the raw material handling position in response to the drive assembly transferring the last second empty tray of the raw material handling position until the third transport vehicle becomes empty; a step of controlling the mechanical hand to transfer the third raw material from the third load tray of the raw material handling position one by one to the raw material seating position until the third load tray becomes a third empty tray; and a step of controlling the drive assembly to transfer the third empty tray of the raw material handling position to the second transport vehicle until all the third load trays in the third transport vehicle are transferred to the second transport vehicle. Claim 4 A feeding method according to claim 3, further comprising the step of controlling the first transport vehicle to transport the second empty tray from the first parking space in response to transferring all of the second load trays from the second transport vehicle to the first transport vehicle, and transporting the first load tray loaded with the first raw material back to the first parking space before the driving assembly transfers the last third empty tray of the raw material handling position. Claim 5 In claim 4, in response to the drive assembly transferring the last third empty tray of the raw material handling position, the drive assembly controls the first transport vehicle to transfer the first load tray loaded with the first raw material one by one to the raw material handling position until the first transport vehicle becomes empty; the machine hand controls the first raw material at the raw material handling position to transfer the first raw material from the first load tray one by one to the raw material placement position until the first load tray becomes the first empty tray; the drive assembly controls the first empty tray at the raw material handling position to transfer the first empty tray one by one to the third transport vehicle until all the first load trays in the first transport vehicle are transferred to the third transport vehicle. A feeding method further comprising the step of, in response to transferring all of the third load trays from the third transport vehicle to the second transport vehicle, controlling the second transport vehicle to transport the third empty tray from the second parking space, and transporting the second load tray loaded with the second raw material back to the second parking space before the driving assembly transfers the last of the first empty trays at the raw material handling location. Claim 6 A feeding method according to any one of claims 1 to 5, wherein the step of controlling the second transport vehicle to transport the second load tray loaded with the second raw material to the second parking space comprises the step of controlling the second transport vehicle so that the driving assembly reaches the second parking space before transferring the last first empty tray of the raw material handling position. Claim 7 A feeding system comprising a drive assembly, a transmission assembly, and a mechanical hand; a first parking space, a second parking space, a third parking space, a raw material handling location, and a raw material placement location; a feeding device configured such that the transmission assembly takes the raw material from the raw material placement location through the raw material placement location; a transport device comprising a first transport vehicle, a second transport vehicle, and a third transport vehicle; and a control circuit electrically connected to the feeding device and the transport device, respectively, and configured to control the operation of the feeding system by a feeding method according to any one of claims 1 to 5. Claim 8 A feeding system according to claim 7, wherein the loading capacity of the first transport vehicle, the second transport vehicle, and the third transport vehicle is the same; the first parking space, the second parking space, and the third parking space are installed on the same side of the transmission assembly, and the third parking space is installed between the first parking space and the second parking space along the transmission direction of the transmission assembly; and the raw material handling position is installed above the third parking space. Claim 9 In claim 8, the drive assembly comprises: a first lifting mechanism installed corresponding to the first parking space, which lifts the first load tray loaded with the first raw material from the first transport vehicle one by one to a first preset position, and places the second empty tray from the first preset position one by one onto the empty first transport vehicle; and a second load tray installed corresponding to the second parking space, which lifts the second load tray loaded with the second raw material from the second transport vehicle one by one to a second preset position, and places the third empty tray from the second preset position one by one onto the empty second transport vehicle. A second lifting mechanism that installs the raw material handling position between the first preset position and the second preset position along the transmission direction of the transmission assembly; a third lifting mechanism installed corresponding to the third parking space, which lifts the third load tray loaded with the third raw material from the third transport vehicle one by one to the raw material handling position, and places the first empty tray of the raw material handling position one by one onto the empty third transport vehicle; and a mechanism installed above the first parking space, the second parking space, and the third parking space, which moves along the transmission direction of the transmission assembly to move to any one position at the first preset position, the raw material handling position, and the second preset position; A feeding system comprising a translation mechanism configured to move the first load tray loaded with the first raw material to the raw material handling position as the first preset position, move the second load tray loaded with the second raw material to the raw material handling position as the second preset position, move the second empty tray at the raw material handling position to the first preset position, and move the third empty tray at the raw material handling position to the second preset position. Claim 10 A battery production line comprising: a case loading system configured to mount a battery cell within a case; and a feeding system according to claim 7 configured to transfer the case to the case loading system.

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