Carrying device and screen printing equipment

Abstract

The invention provides a carrying device and silk-screen printing equipment, and the carrying device comprises a carrying main body which comprises a first connecting frame, second connecting frames located on the two sides of the first connecting frame in the first direction, and a plurality of groups of supporting units used for jacking or lowering battery pieces, the supporting unit comprises supporting pieces connected to the two second connecting frames respectively, and the supporting pieces are used for making contact with the lower surfaces of the battery pieces; the first driving part is used for driving the carrying main body to move along the height direction; and the second driving piece is used for driving the carrying main body to move along a second direction perpendicular to the first direction. The supporting unit of the carrying device is in contact with the lower surface of the battery piece, so that the battery piece can be jacked upwards from the feeding device to carry the battery piece, the adsorption force for adsorbing the battery piece can be reduced, and meanwhile, the carrying efficiency of the battery piece is improved.

Description

Technical Field

[0001] The invention relates to the field of semiconductor technology, in particular to a transport device and screen printing equipment. Background Art

[0002] Existing handling devices generally use suction cups to suck up battery cells from above the battery cells to transport the battery cells. For this handling method, firstly, it is necessary to ensure that the suction cup has a large suction force so that it can adsorb and fix the battery cells; secondly, when sucking up the battery cells, the handling device needs to move downward first to suck up the battery cells, and then move upward to separate the battery cells from the transmission device, which will cause a decrease in handling efficiency.

[0003] In view of this, it is necessary to provide a transport device to solve the above technical problems. Summary of the invention

[0004] In order to achieve the above-mentioned purpose, the present invention provides a transport device, which includes a transport body, including a first connecting frame, a second connecting frame located on both sides of the first connecting frame along a first direction, and a plurality of support units for lifting or lowering battery cells, wherein the support unit includes support members respectively connected to the two second connecting frames, and the support members are used to contact the lower surface of the battery cell; a first driving member for driving the transport body to move along a height direction; and a second driving member for driving the transport body to move along a second direction perpendicular to the first direction.

[0005] As a further improvement of the present invention, the first connecting frame includes a driving portion connected to the second driving member, and a connecting portion connecting the driving portion and two second connecting frames.

[0006] As a further improvement of the present invention, the support units are symmetrically arranged on both sides of the connecting portion along the second direction.

[0007] As a further improvement of the present invention, two groups of the support units are arranged on the same side of the connecting portion, and the spacing between the two groups of the support units on the same side of the connecting portion is smaller than the spacing between the two groups of the support units on different sides of the connecting portion and adjacent to each other.

[0008] As a further improvement of the present invention, a first air channel is arranged inside the second connecting frame, and the supporting member includes a second air channel located therein and connected to the first air channel, and a suction port located on the top thereof and connected to the second air channel.

[0009] As a further improvement of the present invention, the support member also includes a fixing portion connected to the second connecting frame, a supporting portion perpendicular to the fixing portion, and a bearing portion located at one end of the supporting portion away from the fixing portion, and the adsorption port is located at the top of the bearing portion.

[0010] As a further improvement of the present invention, a sealing plate for sealing the first airway is connected to the bottom of the second connecting frame, and an airway interface communicating with the first airway is provided at the top of the second connecting frame.

[0011] As a further improvement of the present invention, the transport body further includes a reinforcement plate connected to the top of the second connecting frame, and a plurality of reinforcement rods connected between the reinforcement plates on two of the second connecting frames.

[0012] As a further improvement of the present invention, the reinforcement rods and the support units are arranged in a one-to-one correspondence, and the center lines of the reinforcement rods and the support units coincide with each other in the height direction.

[0013] As a further improvement of the present invention, all of the reinforcement rods are located at the same height, and the height difference between the reinforcement rods and the support members is greater than a first preset spacing.

[0014] The present invention further provides a screen printing device, comprising a feeding device and a printing device arranged along the second direction, wherein the printing device comprises a printing stage and a printing head located above the printing stage;

[0015] A transport device, the transport device is used to transport the battery sheet from the feeding device to the printing stage;

[0016] Wherein, a first clearance groove for the support unit to move along the height direction and a second clearance groove for the support unit to move along the second direction are arranged on both sides of the printing platform along the first direction, and the first clearance groove and the second clearance groove are connected.

[0017] As a further improvement of the present invention, the feeding device includes a plurality of second transmission members that are separately arranged, and the second transmission members include a support frame and a transmission belt located on both sides of the support frame along a direction perpendicular to the transmission direction of the battery cells, and the spacing between two of the transmission belts is smaller than the spacing between the support members on the two second connecting frames.

[0018] Beneficial effects of the present invention: the support unit of the transport device in the present invention is in contact with the lower surface of the battery cell, so that the battery cell can be lifted upward from the feeding device to transport the battery cell, thereby reducing the adsorption force used to adsorb the battery cell and improving the transport efficiency of the battery cell; the support unit includes support members respectively connected to the two second connecting frames, which can improve the stability of the battery cell during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 It is a front view of the handling device of the present invention;

[0021] Figure 2 A top view of the handling device of the present invention;

[0022] Figure 3 A schematic diagram of the transport device of the present invention from another perspective;

[0023] Figure 4 It is a structural schematic diagram of the transport body of the present invention;

[0024] Figure 5 It is a schematic diagram of the arrangement of the support units on the transport body of the present invention;

[0025] Figure 6 It is a front view of the transport body of the present invention;

[0026] Figure 7 It is a bottom schematic diagram of the transport body of the present invention;

[0027] Figure 8 for Figure 7 A is a schematic diagram of the enlarged structure of the middle part;

[0028] Fig. 9 for Figure 5 The cross-sectional view along the AA direction;

[0029] Fig.10 It is a structural schematic diagram of the support member of the present invention;

[0030] Fig.11 is a cross-sectional view of the support member of the present invention;

[0031] Fig.12 It is a schematic diagram of the overall structure of the screen printing device of the present invention;

[0032] Fig.13 It is a schematic diagram of the partial structure of the screen printing device of the present invention;

[0033] Fig.14 It is a schematic structural diagram of the feeding device of the present invention;

[0034] Fig.15 It is a structural schematic diagram of the transmission area of ​​the present invention;

[0035] Fig.16 It is a structural schematic diagram of the feeding area of ​​the present invention;

[0036] Fig.17It is a schematic diagram of half-cell battery cells of the present invention arranged in a loading area according to a preset spacing;

[0037] Fig.18 It is a structural schematic diagram of the handling device of the present invention located in the loading area;

[0038] Fig.19 A schematic diagram of the transport device of the present invention waiting to transport a half-cell battery sheet;

[0039] Fig. 20 It is a schematic diagram of the handling device of the present invention lifting half of a battery cell;

[0040] Fig.21 It is a schematic diagram of the structure of the transport device and the printing device of the present invention;

[0041] Fig. 22 It is a structural schematic diagram of the printing platform of the present invention;

[0042] Fig.23 A top view of the printing platform of the present invention;

[0043] Fig.24 It is a side view of the printing stage of the present invention;

[0044] Fig.25 A schematic diagram of a transport device of the present invention placing a battery cell on a printing platform from one viewing angle;

[0045] Fig.26 A schematic diagram of another perspective of the handling device of the present invention placing a battery cell on a printing platform;

[0046] Fig. 27 This is a schematic diagram of the transport device of the present invention returning to the loading area;

[0047] In the figure:

[0048] 100, feeding device; 101, transmission area; 101a, first transmission member; 101b, third transmission member; 101b-1, correction member; 102, loading area; 102a, loading position; 102b, second transmission member; 102b-1, support frame; 102b-2, transmission belt; 102c, sensor.

[0049] 200, transport device; 201, transport body; 201a, first connecting frame; 201a-1, driving part; 201a-2, connecting part; 201b, second connecting frame; 201b-1, first air channel; 201b-2, sealing plate; 201b-3, air channel interface; 201c, supporting unit; 201c-1, supporting member; 201c-11 second air channel; 201c-12 adsorption port; 201c-13, fixing part; 201c-14, supporting part; 201c-15, bearing part; 201d, reinforcing plate; 201e, reinforcing rod; 202, first driving member; 203, second driving member;

[0050] 300, printing device; 301, printing platform; 301a, first clearance groove; 301b, second clearance groove; 301c, support seat; 301d, bearing platform; 302, printing head; 303, guide rail;

[0051] 400. Unloading device. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0053] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0054] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", 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 present invention and simplifying the description, rather than indicating or implying 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 present invention.

[0055] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0056] like Figures 1 to 11 As shown, the transport device 200 provided by the present invention is used to transport the battery cells from the feeding device 100 to the printing device 300. The transport device 200 includes a transport body 201 for transporting the battery cells, a first driving member 202 for driving the transport body 201 to move along the height direction, and a second driving member 203 for driving the transport body 201 to move along the second direction. The feeding device 100 and the printing device 300 are arranged along the second direction. Under the joint action of the first driving member 202 and the second driving member 203, the transport body 201 moves back and forth between the feeding device 100 and the printing device 300 to transport the battery cells.

[0057] The transport body 201 includes a first connecting frame 201a, second connecting frames 201b located on both sides of the first connecting frame 201a along the first direction, and a plurality of supporting units 201c for lifting or lowering the battery cells, wherein the supporting units 201c include supporting members 201c-1 respectively connected to two second connecting frames 201b, and the supporting members 201c-1 are used to contact the lower surface of the battery cells. The first direction and the second direction are perpendicular to each other.

[0058] The first connecting frame 201a includes a driving portion 201a-1 connected to the second driving member 203, and a connecting portion 201a-2 connecting the driving portion 201a-1 and two second connecting frames 201b.

[0059] The driving part 201a-1 is connected to the second driving member 203. The driving part 201a-1 can drive the entire transport body 201 to move along the second direction under the drive of the second driving member 203. The driving part 201a-1 is provided with a weight-reducing hole, thereby reducing the weight of the entire transport body 201.

[0060] The connecting portion 201a-2 is perpendicular to the driving portion 201a-1, and the connecting portion 201a-2 is connected to the middle position of the driving portion 201a-1 and extends along the first direction. The bottom of the connecting portion 201a-1 is provided with connecting feet, and the connecting feet are located on both sides of the second connecting frame 201b along the first direction to connect with two second connecting frames 201b respectively. In order to reduce the weight of the connecting portion 201a-2, the height of the end of the connecting portion 201a-2 connected to the driving portion 201a-1 is greater than the height of the end of the connecting portion 201a-2 away from the driving portion 201a-1.

[0061] In this embodiment, two connecting parts 201a-2 are arranged at intervals, and vacuum generators are fixed on the tops of the two connecting parts 201a-2. The vacuum generators are connected to the support member 201c-1, thereby providing negative pressure for the support member 201c-1 to adsorb the battery cells, thereby improving the safety of the carrying body 201 in carrying the battery cells.

[0062] The two second connecting frames 201b are arranged along the first direction, and the two second connecting frames 201b are parallel to each other and extend along the second direction, that is, the second connecting frame 201b and the connecting portion 201a-2 are perpendicular. Specifically, the connecting portion 201a-2 and the two second connecting frames 201b are approximately "H" shaped when projected in the height direction.

[0063] The second connecting frame 201b is provided with a first air channel 201b-1 inside, and the top of the second connecting frame 201b is provided with an air channel interface 201b-3 connected to the first air channel 201b-1. The air channel interface 201b-3 is used to connect with the vacuum generator, so as to form negative pressure in the first air channel 201b-1, and provide negative pressure to the support member 201c-1 connected to the second connecting frame 201b through the first air channel 201b-1 to adsorb the battery sheet.

[0064] In a specific embodiment, a plurality of mutually independent first air channels 201b-1 are arranged at intervals inside the second connecting frame 201b, and the number of the first air channels 201b-1 is the same as the number of the supporting units 201c. Each of the first air channels 201b-1 is connected to a vacuum generator through its own air channel interface 201b-3.

[0065] The bottom of the second connecting frame 201b is also connected to a sealing plate 201b-2 for sealing the first air channel 201b-1. Specifically, a sealing groove is provided at the bottom of the second connecting frame 201b, the bottom of the first air channel 201b-1 is open and connected to the sealing groove, and the area of ​​the sealing groove is larger than the area of ​​the second air channel 201b-1. The first air channel 201b-1 is closed by fixing the sealing plate 201b-2 in the sealing groove.

[0066] A plurality of the support units 201c are arranged along the second direction, and each support unit 201c is used to carry a battery cell. The support unit 201c includes the support members 201c-1 respectively connected to two of the second connecting frames 201b. When carrying, the battery cell is located between the two second connecting frames 201b, and the support members 201c-1 on the two second connecting frames 201b are respectively in contact with both sides of the lower surface of the battery cell to carry the battery cell.

[0067] The support member 201c-1 is used to contact the lower surface of the battery cell. It can be understood that when the first driving member 202 drives the transport body 201 to move upward, the support unit 201c lifts the battery cell upward; when the first driving member 202 drives the transport body 201 to move downward, the support unit 201c lowers the battery cell.

[0068] In this embodiment, any of the support units 201c includes four support members 201c-1, and the four support members 201c-1 are respectively located on two second connecting frames 201b in a group of two. It can be understood that the distance between two support members 201c-1 located on the same second connecting frame 201b in the support unit 201c is smaller than the size of the battery cell along the second direction; the distance between two support members 201c-1 located on two second connecting frames 201b in the support unit 201c is smaller than the size of the battery cell along the first direction.

[0069] The supporting units 201c are symmetrically arranged on both sides of the connecting portion 201a-2 along the second direction, that is, the number of the supporting units 201c is an even number, and the transport body 201 transports an even number of battery cells at a time.

[0070] The following describes the transport body 201 in detail by taking the transport body 201 having four groups of the support units 201 c as an example.

[0071] Two groups of the support units 201c are arranged on the same side of the connection portion 201a-2, and the distance between the two groups of the support units 201c on the same side of the connection portion 201a-2 is smaller than the distance between the two adjacent groups of the support units 201c on different sides of the connection portion 201a-2.

[0072] Reference Figure 5 The four groups of support units 201c are support unit 1, support unit 2, support unit 3, and support unit 4. The support unit 1 and the support unit 2 are located on the same side of the connecting portion 201a-2, and the support unit 3 and the support unit 4 are located on the same side of the connecting portion 201a-2. The four support members 201c-1 in the support unit 201c enclose a rectangular region, and the central axis of the rectangular region along the second direction is defined as the midline of the support unit 201c.

[0073] The distance between the center lines of the support unit 1 and the support unit 2 is L1, the distance between the center lines of the support unit 3 and the support unit 4 is also L1, and the distance between the center lines of the support unit 2 and the support unit 3 is L2, where L2>L1.

[0074] The support member 201c-1 includes a second air channel 201c-11 located therein and connected to the first air channel 201b-1, and a suction port 201c-12 located at the top thereof and connected to the second air channel 201c-11. The first air channel 201b-1 forms a negative pressure therein under the action of the vacuum generator, and the second air channel 201c-11 is connected to the first air channel 201b-1 and also forms a negative pressure therein, so that the battery cell being transported is adsorbed through the suction port 201c-12, thereby improving the safety of the transport body 201 in transporting the battery cell and preventing the battery cell from moving or falling.

[0075] The support member 201c-1 also includes a fixing portion 201c-13 connected to the second connecting frame 201b, a supporting portion 201c-14 perpendicular to the fixing portion 201c-13, and a bearing portion 201c-15 located at one end of the supporting portion 201c-14 away from the fixing portion 201c-13, and the adsorption port 201c-12 is located at the top of the bearing portion 201c-15.

[0076] The projection of the support member 201c-1 in the height direction is in a "T" shape. A mounting groove is provided on one side of the second connecting frame 201b facing the other second connecting frame 201b, and the fixing portion 201c-13 is fixed in the mounting groove by bolts. The supporting portion 201c-14 extends from the connection end with the fixing portion 201c-13 in a direction away from the second connecting frame 201b. The height of the bearing portion 201c-15 is greater than the height of the supporting portion 201c-14, that is, the bearing portion 201c-15 contacts the lower surface of the battery cell. The second air duct 201c-11 passes through the fixing portion 201c-13, the supporting portion 201c-14 and the bearing portion 201c-15 to communicate with the adsorption port 201c-12.

[0077] Preferably, the length of the mounting groove along the second direction is greater than the length of the fixing portion 201c-13 along the second direction, and the fixing hole on the fixing portion 201c-13 matching the bolt is set as a long hole, so that the support member 201c-1 can be fine-tuned along the second direction.

[0078] The transport body 201 further includes a reinforcing plate 201d connected to the top of the second connecting frame 201b and a plurality of reinforcing rods 201e connected between the reinforcing plates 201d on two of the second connecting frames 201d.

[0079] The reinforcing plate 201d is perpendicular to the second connecting frame 201b, and each second connecting frame 201b is connected with two reinforcing plates 201d, and the two reinforcing plates 201d are arranged on both sides of the connecting portion 201a-2. The reinforcing plate 201a is used to improve the stability of the carrying body 201 in carrying the battery cells and prevent the second connecting frame 201b from shaking during the movement.

[0080] The reinforcing rod 201e is parallel to the connecting portion 201a-2, and the two ends of the reinforcing rod 201e are respectively connected to the reinforcing plates 201d of the two second connecting frames 201d. Specifically, the reinforcing plate 201d is provided with a mounting portion, and the end of the reinforcing rod 201e is fixed to the mounting portion. The reinforcing rod 201e is used to further improve the overall structural strength of the transport body 201 and the stability of transporting battery cells.

[0081] Preferably, the reinforcing rod 201e and the supporting unit 201c are arranged in one-to-one correspondence, and the midlines of the reinforcing rod 201e and the supporting unit 201c overlap in height direction, so as to prevent the reinforcing rod 201e from blocking the edge of the battery sheet carried on the supporting unit 201c and affecting the subsequent camera positioning.

[0082] It should be noted that all the reinforcing rods 201e are located at the same height, and the height difference between the reinforcing rods 201e and the supporting member 201c-1 is greater than the first preset distance. In this way, when the transport body 201 lowers the battery cell onto the printing stage 301 of the printing device 300, the transport body 201 can move from the printing device 300 to the feeding device 100 without hindrance for the next transport. The first preset distance is determined specifically by the printing stage 301.

[0083] The second driving member 203 adopts a linear motor, which can drive the transport body 201 to move quickly along the second direction, and can accurately control the moving position of the transport body 201. The first driving member 202 adopts an electric cylinder + guide rail to drive the second driving member 203 and the transport body 201 to move along the height direction.

[0084] To summarize, the support unit 201c of the transport device 200 described in the present application is in contact with the lower surface of the battery cell, so that the battery cell can be lifted upward from the feeding device 100 to transport the battery cell, thereby reducing the adsorption force used to adsorb the battery cell and improving the transport efficiency of the battery cell; the support unit 201c includes support members 201c-1 respectively connected to the two second connecting frames 201b, which can improve the stability of the battery cell during transportation.

[0085] The present application also provides a screen printing device. It should be noted that the screen printing device described in the present application is used for screen printing of half-cell batteries. For existing screen printing devices for half-cell batteries, each half-cell battery needs to be equipped with a printing head, which will increase the cost of the screen printing device and reduce the printing efficiency. The screen printing device described in the present application aims to reduce the number of printing heads and improve the printing efficiency of half-cell batteries, so that two half-cell batteries can share one printing head, that is, two printing areas are set on one printing head to screen print two half-cell batteries at the same time.

[0086] The screen printing device includes a feeding device 100 and a printing device 300 arranged along the second direction, and the transport device 200 is used to transport the battery cell from the feeding device 100 to the printing device 300. The feeding device 100 includes a transmission area 101 and a loading area 102, and the printing device 300 includes a printing stage 301 and a printing head 302, and the printing head 302 has two printing areas.

[0087] Specifically, the feeding device 100 includes a transmission area 101 and a loading area 102 located downstream of the transmission area 101. The battery cells are transmitted from the transmission area 101 to the loading area 102. The battery cells are arranged in the loading area 102 according to a preset spacing and wait for the conveying device 200 to convey and load.

[0088] The transmission area 101 includes a first transmission member 101a and a third transmission member 101b. The battery cell is transmitted from the first transmission member 101a to the loading area 102 via the third transmission member 101b. The third transmission member 101b is provided with a correction member 101b-1 for correcting the position of the battery cell. The correction member 101b-1 includes two sets of correction wheels symmetrically arranged along the central axis of the third transmission member 101b. The two sets of correction wheels can move in opposite directions. The battery cell is corrected by the two sets of correction wheels so that the battery cell remains centered on the third transmission member 101b.

[0089] The first transmission member 101a and the third transmission member 101b may be provided as one body or separately.

[0090] The loading area 102 includes a plurality of groups of loading positions 102a arranged along the transmission direction of the battery cells. Any group of the loading positions 102a includes two second transmission members 102b which are separately arranged. The two second transmission members 102b are respectively used to place two half-cell battery cells.

[0091] The two second transmission members 102b are separately arranged, that is, the two second transmission members 102b are independent of each other, and each second transmission member 102b can be independently controlled to switch the working state. The second transmission member 102b is used to adjust the spacing between the half-cell battery cells while transmitting the half-cell battery cells, so that the half-cell battery cells are arranged according to the preset spacing.

[0092] It can be understood that the supporting units 201c correspond to the second transmission members 102b one by one, and a group of the supporting units 201c is responsible for carrying a half-cell battery placed on the second transmission member 102b.

[0093] The second transmission member 102b includes a support member 102b-1 and a transmission belt 102b-2 located on both sides of the support frame 102b-1 perpendicular to the transmission direction of the battery cell. In order to enable the support member 201c-1 to lift the battery cell on the transmission belt 102b-2 upward, the distance between the two transmission belts 102b-2 is smaller than the distance between the two support members 201c-1 located on the two second connection frames 201b.

[0094] The loading area 102 further includes a sensor 102c for detecting the position of the half-cell battery sheet on the second transmission member 102b. The sensor 102c and the second transmission member 102b are arranged one by one, and the sensor 102c detects the position of the half-cell battery sheet on each second transmission member 102b, and controls the operation of each second transmission member 102b to adjust the position of the battery sheet thereon, so that the battery sheets are arranged in the loading area 102 according to the preset spacing. The sensor 102c can be a laser sensor that can locate the position of the half-cell battery sheet.

[0095] If two half-cells are to share one printing head 302 , firstly the distance between the two half-cells needs to be reduced, and secondly the distance between the two half-cells needs to be consistent with the distance between the two printing areas on the printing head 302 .

[0096] In order to reduce the distance between two half-cells, the present application replaces the existing two transmission lines for feeding with one transmission line for feeding; at the same time, the present application changes the placement direction of the existing half-cell during transmission, so that the width direction of the half-cell is kept consistent with the transmission direction, thereby avoiding the shape of the printing head 302 being too narrow and long, affecting the printing and structural stability of the printing head 302.

[0097] In order to ensure the consistency of the spacing between the two half-cell battery cells and the spacing between the two printing areas on the printing head 302, two separately arranged second transmission components 102b are used to place the two half-cell battery cells respectively. Each of the second transmission components 102b can be individually controlled to adjust the position of the upper half-cell battery cell, so that the two half-cell battery cells located in the same loading position 102a are arranged according to a preset spacing, which is the spacing between the two printing areas on the printing head 302.

[0098] Corresponding to the four groups of the supporting units 201c, the loading area 102 includes two groups of the loading positions 102a and four separately arranged second transmission members 102b.

[0099] Along the transmission direction of the battery cell, the four second transmission members 102b are respectively the second transmission member 1, the second transmission member 2, the second transmission member 3, and the third transmission member 4. The second transmission member 1 and the second transmission member 2 are located in the same group of the loading positions 102a, and the two half-cell battery cells on the second transmission member 1 and the second transmission member 2 share a printing head. The second transmission member 3 and the third transmission member 4 are located in the same group of the loading positions 102a, and the two half-cell battery cells on the second transmission member 3 and the second transmission member 4 share a printing head.

[0100] It is understandable that two printing heads 302 require two printing platforms 301. In order to realize the transport of four half-cell cells to the two printing platforms 301 at one time through the transport device 200, a certain distance needs to be maintained between the two printing platforms 301. In this way, compared with the two half-cell cells located in the same loading area 102, the distance between the two half-cell cells on the second transport member 2 and the second transport member 3 needs to be appropriately increased.

[0101] Specifically, the four battery cells in the loading area 102 are arranged at the following spacing: the spacing between the two half-cell battery cells on the second transmission member 1 and the second transmission member 2 is ΔL1, and the spacing between the two half-cell battery cells on the second transmission member 3 and the second transmission member 4 is also ΔL1, and ΔL1 is the spacing between the two printing areas on the printing head 302; the spacing between the two half-cell battery cells on the second transmission member 2 and the second transmission member 3 is ΔL2, and ΔL2>ΔL1.

[0102] To ensure that the four groups of support units 201c on the transport body 201 can stably transport four half-cells, L1 = L + ΔL1, L2 = L + ΔL2, where L is the width of a half-cell. In this way, as long as the transport body 201 is moved so that the central axis of the transport body 201 and the central axis of the loading area 102 coincide in the height direction, the center line of each support unit 201c and the central axis of each half-cell can coincide, thereby stably transporting four half-cells at one time.

[0103] The distance ΔL1 between the two printing areas is 30-40 mm. If the distance is too small, the two printing areas may affect each other when printing two half-cells, resulting in poor printing effect. If the distance is too large, the volume of the printing head 302 will be increased.

[0104] Preferably, the spacing between the center line of the second transmission member 1 along the cell transmission direction and the center line of the second transmission member 2 along the cell transmission direction is L1. The spacing between the center line of the second transmission member 3 along the cell transmission direction and the center line of the second transmission member 4 along the cell transmission direction is also L1. The spacing between the center line of the second transmission member 2 along the cell transmission direction and the center line of the second transmission member 3 along the cell transmission direction is L2. In this way, as long as the center axis of the half-cell on each of the second transmission members 102b along the width direction is adjusted to coincide with the center line of the second transmission member 102b, the half-cell can be arranged according to the above spacing.

[0105] The printing stage 301 is provided with a first clearance groove 301a for the support unit 201c to move along the height direction and a second clearance groove 301b for the support unit 201c to move along the second direction on both sides along the first direction, and the first clearance groove 301a and the second clearance groove 301b are connected.

[0106] Two half-cell batteries are placed on each printing stage 301 , and the half-cell batteries carried by the two groups of the supporting units 201 c located on the same side of the connecting portion 201 a - 2 are placed on the same printing stage 301 .

[0107] The printing carrier 301 includes a support seat 301c and a carrier platform 301d located on the top of the support seat 301c, and the carrier platform 301d is used to place a half-cell battery. The first clearance grooves 301a are arranged on both sides of the carrier platform 301d along the first direction, and the first clearance grooves 301a penetrate the carrier platform 301d along the height direction. The support members 201c-1 on the two second connecting frames 201b can move downward from the first clearance grooves 301a on both sides of the carrier platform 301d, so as to place the half-cell battery carried by the support unit 201c on the carrier platform 301d.

[0108] It can be understood that the number and spacing of the first clearance grooves 301a on the supporting platform 301d match the number and spacing of the supporting members 201c-1.

[0109] The second clearance groove 301b is located below the support platform 301d and communicates with the first clearance groove 301a, and the second clearance groove 301b extends along the second direction. Thus, when the support member 201c-1 moves downward from the first clearance groove 301a to the second clearance groove 301b, it can move along the second direction to return to the loading area 102.

[0110] It should be noted that the first preset spacing is the thickness of the support seat 301c. Thus, when the support member 201c-1 is located in the second clearance groove 301b, the reinforcement rod 201e is located above the bearing platform 301d, so that the transport body 201 can move back to the loading area 102 along the second direction without hindrance.

[0111] The printing head 302 has two printing areas. The printing head 302 is located above the printing stage 301, and the printing stage 301 can move along the second direction. After the transport device 200 places the half-cell battery on the printing stage 301, the printing stage 301 moves toward the printing head 302 until it reaches directly below the printing head 302, and then the printing head 302 moves downward to perform screen printing on the two half-cell batteries on the printing stage 301.

[0112] The printing device 300 further includes a guide rail 303 , wherein the guide rail 303 extends along the second direction, and the printing stage 301 is slidably mounted on the guide rail 303 .

[0113] The screen printing device further includes a material unloading device 400 located downstream of the printing device 300 , and another transporting device 200 for transporting the half-cell battery cell on the printing stage 301 to the material unloading device 400 .

[0114] The guide rail 303 extends from the feeding device 100 to the unloading device 400, and each of the two ends of the guide rail 303 along the extension direction has a transport device 200. The printing head 302 is located between the feeding device 100 and the unloading device 400.

[0115] The printing stage 301 first moves to the side where the feeding device 100 is located, and the transport device 200 on this side transports the half-cell battery to be printed on the feeding device 100 to the printing stage 301. Then the printing stage 301 moves along the guide rail 303 to the bottom of the printing head 302, and the printing head 302 moves downward to perform screen printing on the half-cell battery on the printing stage 301. After printing is completed, the printing stage 301 continues to move along the guide rail 303 to the side where the unloading device 400 is located, and the transport device 200 on this side transports the half-cell battery printed on the printing stage 301 to the unloading device 400.

[0116] The following is a detailed description of the transport process of the transport device 200 , specifically taking the transport device 200 for transporting a half-cell battery sheet to be printed as an example.

[0117] In the initial state, the transport body 201 is located in the loading area 102, the central axis of the transport body 201 coincides with the central axis of the loading area 102 in the height direction, and the height of the support member 201c-1 is less than the height of the conveyor belt 102b-2, that is, the support member 201c-1 is located below the half-cell battery sheet transported on the second conveyor member 102b;

[0118] After the half-cell wafers in the loading area 102 are arranged at a preset spacing, start the first driving member 202 to drive the handling body 201 to move upward, and the supporting member 201c-1 contacts the bottom of the half-cell wafer to lift the half-cell wafer, so that the half-cell wafer is separated from the conveyor belt 102b-2;

[0119] After the handling body 201 rises to a preset height, start the second driving member 203 to drive the handling body 201 and the half-cell wafers thereon to move along the second direction towards the printing stage 301, and precisely control the moving distance of the handling body 201 through the second driving member 203, so that each supporting member 201c-1 is aligned with the first relief groove 301a in the height direction;

[0120] Start the first driving member 202 to drive the handling body 201 and the half-cell wafers thereon to move downward, the supporting member 201c-1 passes through the first relief groove 301a and enters the second relief groove 301b, and at the same time places the half-cell wafer on the carrier 301d;

[0121] Start the second driving member 203 to drive the handling body 201 to move along the second direction towards the loading area 102 until the handling body 201 returns to the initial position.

[0122] It can be understood that the handling path of the handling body 201 is in the shape of a "square". The handling device 200 for handling the printed half-cell wafers refers to the above steps and will not be elaborated here.

[0123] In summary, the screen printing equipment can enable two half-cell wafers to share one printing head, thereby reducing the cost of the screen printing equipment and improving the screen printing efficiency.

[0124] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0125] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and are not used to limit the protection scope of the present invention. Any equivalent embodiments or changes made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A transport device (200), characterized in that: include: A transport body (201) comprises a first connecting frame (201a), second connecting frames (201b) located on both sides of the first connecting frame (201a) along a first direction, and a plurality of groups of support units (201c) for lifting or lowering battery cells, wherein the support units (201c) comprise support members (201c-1) respectively connected to two of the second connecting frames (201b), and the support members (201c-1) are used to contact the lower surface of the battery cell; A first driving member (202) for driving the transport body (201) to move in a height direction; A second driving member (203) is used for driving the transport body (201) to move along a second direction perpendicular to the first direction.

2. The handling device (200) according to claim 1, characterized in that: The first connecting frame (201a) comprises a driving portion (201a-1) connected to the second driving member (203), and a connecting portion (201a-2) connecting the driving portion (201a-1) and two of the second connecting frames (201b).

3. The handling device (200) according to claim 2, characterized in that: The support units (201c) are symmetrically arranged on both sides of the connecting portion (201a-2) along the second direction.

4. The handling device (200) according to claim 3, characterized in that: Two groups of the support units (201c) are arranged on the same side of the connecting portion (201a-2), and the spacing between the two groups of the support units (201c) located on the same side of the connecting portion (201a-2) is smaller than the spacing between two groups of the support units (201c) located on different sides of the connecting portion (201a-2) and adjacent to each other.

5. The transport device (200) according to any one of claims 1 to 4, characterized in that: A first air channel (201b-1) is arranged inside the second connecting frame (201b), and the supporting member (201c-1) comprises a second air channel (201c-11) located inside the supporting member and connected to the first air channel (201b-1), and a suction port (201c-12) located on the top of the supporting member and connected to the second air channel (201c-11).

6. The handling device (200) according to claim 5, characterized in that: The support member (201c-1) also includes a fixing portion (201c-13) connected to the second connecting frame (201b), a supporting portion (201c-14) perpendicular to the fixing portion (201c-13), and a bearing portion (201c-15) located at one end of the supporting portion (201c-14) away from the fixing portion (201c-13), and the adsorption port (201c-12) is located at the top of the bearing portion (201c-15).

7. The handling device (200) according to claim 5, characterized in that: A sealing plate (201b-2) for sealing the first air channel (201b-1) is connected to the bottom of the second connecting frame (201b), and an air channel interface (201b-3) in communication with the first air channel (201b-1) is provided at the top of the second connecting frame (201b).

8. The handling device (200) according to claim 1, characterized in that: The transport body (201) further comprises a reinforcing plate (201d) connected to the top of the second connecting frame (201b), and a plurality of reinforcing rods (201e) connected between the reinforcing plates (201d) on two of the second connecting frames (201b).

9. The handling device (200) according to claim 8, characterized in that: The reinforcement rod (201e) and the support unit (201c) are arranged in a one-to-one correspondence, and the center lines of the reinforcement rod (201e) and the support unit (201c) coincide with each other in the height direction.

10. The handling device (200) according to claim 9, characterized in that: All of the reinforcement rods (201e) are located at the same height, and the height difference between the reinforcement rods (201e) and the support member (201c-1) is greater than a first preset distance.

11. A screen printing device, characterized in that: include: A feeding device (100) and a printing device (300) arranged along the second direction, wherein the printing device (300) comprises a printing platform (301) and a printing head (302) located above the printing platform (301); The transport device (200) according to any one of claims 1 to 10, wherein the transport device (200) is used to transport the battery cell from the feeding device (100) to the printing stage (301); Wherein, the printing platform (301) is provided with a first give-way groove (301a) for the support unit (201c) to move along the height direction and a second give-way groove (301b) for the support unit (201c) to move along the second direction on both sides along the first direction, and the first give-way groove (301a) and the second give-way groove (301b) are connected.

12. The screen printing device according to claim 11, characterized in that: The feeding device (100) comprises a plurality of second transmission members (102b) which are separately arranged, and the second transmission members (102b) comprise a support frame (102b-1), and transmission belts (102b-2) located on both sides of the support frame (102b-1) perpendicular to the transmission direction of the battery cells, and the spacing between the two transmission belts (102b-2) is smaller than the spacing between the two support members (201c-1) on the second connecting frames (201b).

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