A lithium battery weighing device for production

Abstract

The present invention discloses a lithium battery weighing device for production, and relates to the technical field of lithium battery production. The present invention places a plurality of lithium batteries on a tray A so that they can be stored simultaneously, and then uses a weighing system composed of a three-axis moving mechanism and a weighing mechanism arranged below the tray A. When in use, the three-axis moving mechanism is used to control the weighing mechanism to move upward until the bottom side of the lithium battery is separated from the bottom side of the tray A. At this time, the weighing mechanism is used to complete the weighing of the lithium battery, and the three-axis moving mechanism is controlled to move to drive the weighing mechanism to move below the tray A, thereby realizing the one-to-one weighing of the plurality of lithium batteries placed on the tray A, that is, there is no need to constantly perform manual loading and unloading operations of the lithium batteries when in use.

Description

Technical Field

[0001] The invention belongs to the technical field of lithium battery production, and in particular relates to a lithium battery weighing device for production. Background Art

[0002] After the battery filling process is completed, standing and weighing are two crucial steps. First of all, standing allows the electrolyte to be evenly distributed inside the battery. At this time, weighing can accurately verify whether the amount of electrolyte injected meets the standard to ensure stable battery performance. At present, lithium batteries need to be weighed during the production process. At present, when weighing lithium batteries, they need to be manually moved to the weighing scale for weighing. After weighing, the lithium batteries are moved away and stored according to the weighing results. The work efficiency is low; and the common weighing method requires the loading, unloading and transportation of the battery in one weighing operation, and there are many handling actions, which leads to the risk of the battery falling during the weighing process.

[0003] Based on this, CN111397717B discloses a battery weighing device. Before weighing, the battery to be weighed is first placed in a battery receiving mechanism. The lifting drive drives the support rod up and down until the support rod passes through the avoidance structure of the battery receiving mechanism and lifts up the battery in the battery receiving mechanism; once the battery is separated from the bottom of the battery receiving mechanism, the pressure on the support rod is the gravity of the battery; after weighing a battery, the battery placed in the battery receiving mechanism needs to be taken out, and then a new battery is simultaneously placed in the battery receiving mechanism for subsequent weighing. Summary of the invention

[0004] The object of the present invention is to provide a lithium battery weighing device for production, which can place multiple lithium batteries on a tray A so that they can be stored at the same time when in use, and then use a weighing system composed of a three-axis moving mechanism and a weighing mechanism arranged under the tray A. When in use, the three-axis moving mechanism is used to control the weighing mechanism to move upward until the bottom side of the lithium battery is detached from the bottom side of the tray A. At this time, the weighing mechanism is used to complete the weighing of the lithium battery, and at the same time, the three-axis moving mechanism is controlled to move to drive the weighing mechanism to move under the tray A, thereby realizing one by one weighing of the multiple lithium batteries placed on the tray A, thereby solving the problems raised by the existing background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a lithium battery weighing device for production, comprising a tray A for storing lithium batteries; the tray A comprises a rectangular plate, the upper surface of the rectangular plate is sunken downward with a plurality of grooves for placing lithium batteries, the bottom side surfaces of the grooves are provided with rectangular openings, and side baffles are provided on the inner bottom side surfaces of the grooves located around the rectangular openings; the device also comprises a three-axis moving mechanism arranged below the tray A, the top of the Y-axis of the three-axis moving mechanism is provided with a weighing mechanism connected thereto; when weighing, the top of the weighing mechanism abuts against the bottom side surfaces of the lithium batteries placed on the tray A.

[0007] Furthermore, the three-axis moving mechanism includes a pair of first slide rails arranged along the X-axis direction, the first slide rails are cooperated with a first electric slider, a second slide rail is connected between the two first electric sliders, the second slide rails are cooperated with a second electric slider, a telescopic structure is fixed on the top side surface of the second electric slider, and the telescopic structure is connected to the bottom side surface of the weighing mechanism; the weighing mechanism includes a base connected to the end of the telescopic structure, and a weighing platform is installed in the middle of the top of the base.

[0008] Furthermore, it also includes a cart for storing pallet A, which includes a rectangular frame located at the bottom, at least two columns A are provided on both sides of the upper surface of the rectangular frame, and a cross beam is connected between the two columns A located on both sides of the rectangular frame; a support beam group for supporting and limiting the up and down movement of pallet A is provided between the two columns A located on the same side of the rectangular frame, and the support beam group includes a pair of support beams set with a gap; rollers are provided on the bottom side surface of the rectangular frame; when in use, pallet A is inserted into the gap formed by the two support beams.

[0009] Furthermore, a support beam group located above the tray A is also installed in conjunction with a tray B having the same structure as the tray A; the four side walls of the rectangular opening are each provided with at least one rectangular opening A; the four side walls of the weighing platform are respectively provided with support rods that cooperate with the rectangular opening A, the ends of the support rods are provided with protrusions protruding upward, and the inner side of the top of the protrusions is provided with a guiding inclined surface; a protective cover arranged above the battery is placed in the groove on the upper surface of the tray A, the open end of the protective cover is provided with a rectangular opening B that cooperates with the rectangular opening A, and the top surface of the protective cover is provided with a protrusion;

[0010] One of the trays B is located directly above the other tray A.

[0011] Furthermore, a column B is provided on both sides of the upper surface of the rectangular frame, a shaft is installed on the top of the column B through a bearing seat, a mounting seat is installed on the end of the shaft located on the inner side of the column B, three control rods are evenly distributed around the mounting seat, a rectangular socket is provided at the end of the control rod, and a rectangular rod sliding along the rectangular socket is connected to the inner bottom side of the rectangular socket through a connecting rope; a connecting rod is connected between the ends of the two control rods.

[0012] Furthermore, a latch mechanism is provided on the control rod, and the two latch mechanisms are connected by a control rope A; the latch mechanism comprises a cylinder with a flange provided at the port, a through hole is provided on the bottom side of the cylinder, a rod body is movably penetrated through the through hole, a convex ring A is provided on the circumference of one end of the rod body, and a spring is connected between the convex ring A and the bottom side of the cylinder; a convex ring B is provided on the other end of the rod body, a mounting cavity for mounting the cylinder body is provided on the control rod, and a fixing hole is provided on the flange; the two ends of the control rope A are respectively connected to the ends of the two rod bodies; the inner wall of the column B is provided with a positioning pin hole for inserting the rod body.

[0013] Furthermore, a cross bar is connected between the two mounting seats, and the cross bar is provided with three control mechanisms along its length direction for respectively controlling the activities of three control ropes A; the control mechanism comprises a shell installed on the cross bar, the shell is provided with a blind hole, the bottom side surface of the blind hole is provided with a through hole, the bottom side surface of the blind hole is connected to a T-shaped pulling rod sliding along the inner wall of the blind hole through a spring B, the end of the T-shaped pulling rod is connected to a control rope B passing through the through hole, the end of the control rope B is connected to a ring body, and the control rope A passes through the ring body.

[0014] Furthermore, a limiting mechanism for limiting the sliding of the rectangular plate along the upper surface of the support beam is provided at the end of the support beam group; the limiting mechanism includes a U-shaped frame pivotally connected to the two support beams, and the two opposite inner side walls of the U-shaped frame are respectively provided with guide slots, and a rectangular sliding block is cooperatively arranged between the two guide slots, and a positioning rod is arranged on one side of the rectangular sliding block, and a positioning hole A for inserting the positioning rod is arranged on the end surface of the support beam; a boss is arranged on the rectangular sliding block located between the two positioning rods, and a bolt is threaded on the boss; an adjusting bolt with an end portion resting on the rectangular sliding block is threadedly connected to the U-shaped frame; guide holes are respectively arranged on the U-shaped frames located on both sides of the adjusting bolt, and a guide rod for the guide hole to pass through is arranged on the rectangular sliding block; a positioning hole B for inserting the positioning rod is arranged on the end side wall of the support beam.

[0015] Furthermore, a base is provided at one end of the rectangular frame, a hinge seat is rotatably connected to the base, a hinge head is hinged on the hinge seat, an operating rod is connected to the hinge head, and a grip rod perpendicular to the operating rod is provided at the end of the operating rod.

[0016] Furthermore, a downwardly recessed installation cavity for installing a three-axis moving mechanism is opened on the ground, and a pair of limiting beams are arranged on the ground on both sides of the installation cavity, and the two limiting beams form a path for limiting the movement of the roller; downwardly recessed arc grooves are respectively arranged at both ends of the path, and a pressure sensing mechanism is arranged on the bottom side surface of the arc groove.

[0017] The present invention has the following beneficial effects:

[0018] The present invention places a plurality of lithium batteries on a tray A so that they can be stored simultaneously, and then utilizes a weighing system composed of a three-axis moving mechanism and a weighing mechanism disposed below the tray A. When in use, the three-axis moving mechanism is utilized to control the weighing mechanism to move upward until the bottom side of the lithium battery is separated from the bottom side of the tray A. At this time, the weighing mechanism is utilized to complete the weighing of the lithium battery, and at the same time, the three-axis moving mechanism is controlled to move to drive the weighing mechanism to move below the tray A, thereby realizing the one-by-one weighing of the plurality of lithium batteries placed on the tray A, that is, there is no need to constantly perform manual loading and unloading operations of the lithium batteries during use.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 The structure of the lithium battery weighing device of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 2 for Figure 1 A partial enlarged view of the middle part;

[0023] Figure 3 for Figure 1 Main view;

[0024] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0025] Figure 5 for Figure 3 Sectional view at the middle BB;

[0026] Figure 6 This is a schematic diagram of the structure of the tray A of the present invention from a top view;

[0027] Figure 7 This is a schematic diagram of the structure of the tray A of the present invention when viewed from above;

[0028] Figure 8 for Figure 7 A partial enlarged view of point C in the middle;

[0029] Fig. 9 A top view of a tray A of the present invention;

[0030] Fig.10 This is a schematic diagram of the assembly structure of the tray A and the protective cover of the present invention;

[0031] Fig.11 It is a schematic diagram of the structure of the latch mechanism of the present invention;

[0032] Fig.12 The structure of the lithium battery weighing device of the present invention is shown in FIG. Figure 2 ;

[0033] Fig.13 It is a schematic diagram of the control mechanism structure of the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] See also Figure 6-9As shown, the present invention is a lithium battery weighing device for production, including a tray A3, the tray A3 includes a rectangular plate 30, and the upper surface of the rectangular plate 30 is recessed downward to have a plurality of grooves 31 for placing lithium batteries 100, and the bottom side of the groove 31 is provided with a rectangular opening 32, and in order to facilitate weighing, a weighing system consisting of a three-axis moving mechanism and a weighing mechanism is provided below the tray A3, and then when in use, the weighing mechanism installed on the top of the Y-axis is driven to move in the horizontal direction by controlling the movement of the three-axis moving mechanism, and when the weighing mechanism is controlled to move to the bottom of any lithium battery 100, the three-axis moving mechanism is controlled to drive the weighing mechanism to move upward, at this time, the top of the weighing mechanism is against the bottom side of the lithium battery 100, and the bottom side of the lithium battery 100 is controlled to be separated from the groove 31, then the weighing of the lithium battery 100 can be completed at this time, and after the weighing is completed, the weighing mechanism is controlled to restore the initial state, and the three-axis moving mechanism is controlled to drive the weighing mechanism to move below the tray A3.

[0037] In order to facilitate the weighing mechanism to move under the tray A3, Figure 1 and 5 The three-axis moving mechanism includes a pair of first slide rails 111 arranged along the X-axis direction, the first slide rails 111 are equipped with a first electric slider 112, a second slide rail 113 is connected between the two first electric sliders 112, the second slide rail 113 is equipped with a second electric slider 114, and a telescopic structure 115 is fixed to the top side of the second electric slider 114; the weighing mechanism includes a base 110 connected to the end of the telescopic structure 115, and a weighing platform 116 is installed in the middle of the top of the base 110; when the telescopic structure 115 is controlled to extend during use, the base 110 can pass through the rectangular opening 32 at this time.

[0038] In order to protect the lithium battery 100 placed in the groove 31 during use and prevent the lithium battery 100 from tilting or even falling over during the lifting process, a side baffle 34 is provided on the inner bottom side of the groove 31 located around the rectangular opening 32; when the lithium battery 100 tilts during the lifting process, the side baffle 34 is used to support the tilted lithium battery 100, and when the lithium battery 100 is put down, it is kept steadily falling down under the action of the side baffle 34.

[0039] When in use, it also includes a cart for carrying and storing the pallet A3, the cart includes a rectangular frame 2 located at the bottom, at least two columns A21 are arranged on both sides of the upper surface of the rectangular frame 2, and a crossbeam 22 is connected between the two columns A21 located on both sides of the rectangular frame 2; a support beam group for supporting and limiting the up and down movement of the pallet A3 is arranged between the two columns A21 located on the same side of the rectangular frame 2, and the support beam group includes a pair of support beams 23 arranged in a gap; rollers 20 are arranged on the bottom side of the rectangular frame 2; when in use, the pallet A3 is inserted into the gap formed by the two support beams 23; and when in use, the cart needs to be controlled to move to the top of the weighing system, in order to facilitate the cart The relative position of the weighing system is restricted during use. A mounting cavity 11 which is recessed downward and used to mount a three-axis moving mechanism is provided on the ground 1. A pair of limiting beams 12 are provided on the ground 1 on both sides of the mounting cavity 11. The two limiting beams 12 form a path for limiting the movement of the roller 20. The two ends of the path are respectively provided with downwardly recessed arc grooves 13, and the bottom side surfaces of the arc grooves 13 are provided with pressure sensing mechanisms. Then, when in use, the cart is controlled to move to the path. When the four rollers 20 are respectively moved to the positions of the four arc grooves 13, the four pressure sensing mechanisms can detect the pressure signals, that is, weighing can be performed as required.

[0040] Specifically, in order to realize automatic weighing after the cart is placed, the present invention also includes a controller connected to four pressure sensing mechanisms, and the controller is also connected to the telescopic structure 115 of the weighing system, the first electric slider 112, the second electric slider 114 and the weighing platform 116 including the weighing sensor; then after detecting that the cart is placed, the weighing platform 116 is driven to move in the horizontal direction by controlling the first electric slider 112 and the second electric slider 114 to move in the horizontal direction, and then the telescopic structure 115 is controlled to extend and retract to drive the weighing platform 116 to move in the vertical direction.

[0041] When in use, as the cart moves, in order to prevent the rectangular plate 30 placed on the support beam group from sliding along the upper surface of the support beam 23 and falling off the cart, Figure 1-4, a limiting mechanism 5 is provided at the end of the support beam group; the limiting mechanism 5 includes a U-shaped frame 50 pivotally connected to the two support beams 23, and the two opposite inner side walls of the U-shaped frame 50 are respectively provided with guide grooves 51, and a rectangular sliding block 52 is arranged between the two guide grooves 51, and a positioning plug rod 57 is arranged on one side of the rectangular sliding block 52, and a positioning plug hole A231 for inserting the positioning plug rod 57 is arranged on the end surface of the support beam 23; a boss 55 is arranged on the rectangular sliding block 52 located between the two positioning plug rods 57, and a bolt 56 is threadedly connected on the boss 55; an adjusting bolt 54 whose end is against the rectangular sliding block 52 is threadedly connected on the U-shaped frame 50; guide holes 501 are respectively arranged on the U-shaped frame 50 located on both sides of the adjusting bolt 54, and a guide rod 53 for the guide hole 501 to pass through is arranged on the rectangular sliding block 52; a positioning plug hole B232 for inserting the positioning plug rod 57 is arranged on the end side wall of the support beam 23.

[0042] When in use, when it is necessary to use the limiting mechanism 5 to limit the rectangular plate 30 placed on the support beam group, the positioning rod 57 is controlled to be inserted into the positioning hole A231; conversely, when it is necessary to control the rectangular plate 30 to slide along the upper surface of the support beam 23 and extend from one end of the cart, the U-shaped frame 50 is controlled to rotate to the vertical length direction of the support beam group, and at the same time, the positioning rod 57 is controlled to be inserted into the positioning hole B232.

[0043] A base 293 is provided at one end of the rectangular frame 2, a hinge seat 292 is rotatably connected to the base 293, a hinge head 290 is hinged to the hinge seat 292, an operating rod 29 is connected to the hinge head 290, and a gripping rod 291 perpendicular to the operating rod 29 is provided at the end of the operating rod 29.

[0044] At the same time, in order to be able to weigh multiple lithium batteries 100 in one operation, such as Figure 6-10A support beam group located above the tray A3 is also equipped with a tray B4 having the same structure as the tray A3, and the tray B4 is located directly above another tray A3; at this time, at least one rectangular opening A33 is provided on each of the four side walls of the rectangular opening 32; the four side walls of the weighing platform 116 are respectively provided with support rods 117 that cooperate with the rectangular opening A33, and the ends of the support rods 117 protrude upward with protrusions 118, and the inner side of the top of the protrusion 118 is provided with a guiding inclined surface 119; a protective cover 200 that is arranged above the battery 100 is placed in the groove 31 on the upper surface of the tray A3, and a rectangular opening B201 that cooperates with the rectangular opening A33 is provided at the open end of the protective cover 200, and a protrusion 202 is provided on the top surface of the protective cover 200; During weighing, when the telescopic structure 115 is controlled to move to a position directly below a battery 100, the telescopic structure 115 is controlled to extend to the first stage, driving the lithium battery 100 placed on the tray A3 to be pushed upward for weighing, and the weight M1 is recorded at this time; the telescopic structure 115 is controlled to extend to the second stage, and the support rod 117 is used to drive the protective cover 200 placed on the tray A3 to be pushed upward, and the weight M2 is recorded at this time; when the telescopic structure 115 is controlled to extend to the second stage, the protective cover 200 is used to drive the lithium battery 100 placed on the tray B4 to be pushed upward for weighing, and the weight M3 is recorded at this time. The actual weight of the lithium battery 100 placed on the tray B4 is M3-M2, and the weight of the protective cover 200 is M2-M1.

[0045] In order to facilitate unloading of the pallet B4 placed on the cart during use, that is, to facilitate controlling one end of the pallet B4 to protrude from one end of the cart during use, a column B24 is provided on both sides of the upper surface of the rectangular frame 2, and a shaft 251 is installed on the top of the column B24 through a bearing seat 240, and a mounting seat 25 is installed at the end of the shaft 251 located on the inner side of the column B24, and three control rods 26 are evenly distributed around the mounting seat 25, and a rectangular socket is provided at the end of the control rod 26, and a rectangular rod 27 sliding along the rectangular socket is connected to the inner bottom side of the rectangular socket through a connecting rope; the two control rods 2 6, a connecting rod 261 is connected between the ends of the tray B4; when a control rod 26 is in a vertical or downward tilted state, the rectangular rod 27 slides outward along the inner wall of the rectangular hole under the action of its own gravity, and the end of the rectangular rod 27 protrudes from the bottom side of one end of the tray B4; when the control frame composed of the control rod 26 and the connecting rod 261 is controlled to rotate along the shaft 251 and the bearing seat 240, the rectangular rod 27 that is against one end of the tray B4 is used to drive the tray B4 to slide along the upper surface of the support beam 23, so that one end of the tray B4 is controlled to protrude from one end of the cart.

[0046] As shown in the figure, when placing pallet A3 and pallet B4 on the cart, a limit block is provided in the middle of the support beam group to limit the movement of pallet A3 and pallet B4, so that when in use, one end of pallet A3 and pallet B4 abuts against the limit block, and the other end of pallet A3 and pallet B4 abuts against the end of the bolt 56; and at this time, the rectangular rod 27 is inserted into the gap formed between the two pallets B4 on both sides of the limit block.

[0047] Based on the above, when the non-control tray B4 slides along the upper surface of the support beam 23, the control frame needs to be fixed to the column B24 to prevent the control frame from rotating relative to the column B24. The column B24 and the control rod 26 are respectively provided with mutually matching positioning pin holes and latch mechanisms 28. Fig.11 The latch mechanism 28 includes a cylinder 281 with a flange 282 at the port, a through hole 284 is provided on the bottom side of the cylinder 281, a rod 285 is movably provided through the through hole 284, a convex ring A287 is provided on the circumference of one end of the rod 285, and a spring 288 is connected between the convex ring A287 and the bottom side of the cylinder 281; a convex ring B286 is provided on the other end of the rod 285, and an installation cavity for installing the cylinder 281 is provided on the control rod 26, and a fixing hole 283 is provided on the flange 282, so that when in use, the end of the rod 285 is inserted into the positioning pin hole for limiting, thereby limiting the rotation of the control frame relative to the column B24.

[0048] Based on the above design, in order to synchronously control the operation of the two relatively arranged latch mechanisms 28 during use, a control rope A280 is provided, and the two ends of the control rope A280 are respectively connected to the ends of the two rod bodies 285.

[0049] When you need to pay attention, Figure 12-13In order to facilitate the synchronous control of the two latch mechanisms 28 by controlling the control rope A280, a cross bar 60 is connected between the two mounting seats 25. The cross bar 60 is provided with three control mechanisms 6 for controlling the three control ropes A280 to move along its length direction; the control mechanism 6 includes a housing 61 installed on the cross bar 60, a blind hole 62 is provided on the housing 61, a through hole 63 is provided on the bottom side of the blind hole 62, and a T-shaped pull rod 64 sliding along the inner wall of the blind hole 62 is connected to the bottom side of the blind hole 62 through a spring B65, T The end of the T-shaped pulling rod 64 is connected to a control rope B66 that passes through the through hole 63. The end of the control rope B66 is connected to the ring body 67. The control rope A280 passes through the ring body 67, so that when in use, the T-shaped pulling rod 64 is controlled to be pulled outward along the inner wall of the blind hole 62. At this time, the control rope B66 and the ring body 67 are used to cooperate to control the control rope A280 to move to the side close to the cross bar 60 when in use, and then the control rope A280 is used to drive the rod bodies 285 set in the two latch mechanisms 28 to be pulled out of the positioning pin holes.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A lithium battery weighing device for production, characterized in that: It comprises a tray A (3) for storing lithium batteries (100); The tray A (3) comprises a rectangular plate (30), the upper surface of the rectangular plate (30) is recessed downward to form a plurality of grooves (31) for placing lithium batteries (100), the bottom side surfaces of the grooves (31) are provided with rectangular openings (32), and side baffles (34) are provided on the inner bottom side surfaces of the grooves (31) located around the rectangular openings (32); It also includes a three-axis moving mechanism disposed below the tray A (3), wherein the top of the Y-axis of the three-axis moving mechanism is provided with a weighing mechanism connected thereto; When weighing, the top of the weighing mechanism is against the bottom side of the lithium battery (100) placed on the tray A (3).

2. A lithium battery weighing device for production according to claim 1, characterized in that: The three-axis moving mechanism comprises a pair of first slide rails (111) arranged along the X-axis direction, a first electric slider (112) is provided on the first slide rails (111), a second slide rail (113) is connected between the two first electric sliders (112), a second electric slider (114) is provided on the second slide rail (113), a telescopic structure (115) is fixed on the top side of the second electric slider (114), and the telescopic structure (115) is connected to the bottom side of the weighing mechanism; The weighing mechanism comprises a base (110) connected to the end of a telescopic structure (115), and a weighing platform (116) is installed in the middle of the top of the base (110).

3. A lithium battery weighing device for production according to claim 2, characterized in that: Also included is a cart for storing the tray A (3), the cart comprising a rectangular frame (2) at the bottom, at least two columns A (21) are arranged on both sides of the upper surface of the rectangular frame (2), and a crossbeam (22) is connected between the two columns A (21) located on both sides of the rectangular frame (2); A support beam group for supporting and limiting the upward and downward movement of the tray A (3) is arranged between two upright posts A (21) located on the same side of the rectangular frame (2), and the support beam group includes a pair of support beams (23) arranged at a gap; a roller (20) is arranged on the bottom side of the rectangular frame (2); When in use, the tray A (3) is inserted into the gap formed by the two support beams (23).

4. A lithium battery weighing device for production according to claim 3, characterized in that: A support beam group located above the tray A (3) is also equipped with a tray B (4) having the same structure as the tray A (3); The four side walls of the rectangular opening (32) are each provided with at least one rectangular opening A (33); the four side walls of the weighing platform (116) are respectively provided with support rods (117) that cooperate with the rectangular openings A (33); the ends of the support rods (117) protrude upward with convex blocks (118), and the inner side of the top of the convex blocks (118) is provided with guide inclined surfaces (119); A protective cover (200) is placed in the groove (31) on the upper surface of the tray A (3) and is arranged above the storage battery (100); a rectangular opening B (201) matching the rectangular opening A (33) is arranged at the open end of the protective cover (200); and a protrusion (202) is arranged on the top surface of the protective cover (200); One of the trays B (4) is located directly above the other tray A (3).

5. A lithium battery weighing device for production according to claim 4, characterized in that: A column B (24) is provided on both sides of the upper surface of the rectangular frame (2); a shaft (251) is installed on the top of the column B (24) through a bearing seat (240); a mounting seat (25) is installed on the end of the shaft (251) located inside the column B (24); three control rods (26) are evenly distributed around the mounting seat (25); a rectangular plug hole is provided at the end of the control rod (26); and a rectangular rod (27) sliding along the rectangular plug hole is connected to the inner bottom side of the rectangular plug hole through a connecting rope; A connecting rod (261) is connected between the ends of the two control rods (26).

6. A lithium battery weighing device for production according to claim 5, characterized in that: The control rod (26) is provided with a latch mechanism (28), and the two latch mechanisms (28) are connected by a control rope A (280); The latch mechanism (28) comprises a cylinder (281) with a flange (282) at the end, a through hole (284) is provided on the bottom side of the cylinder (281), a rod (285) is movably provided through the through hole (284), a convex ring A (287) is provided on the circumference of one end of the rod (285), a spring (288) is connected between the convex ring A (287) and the bottom side of the cylinder (281); a convex ring B (286) is provided on the other end of the rod (285), an installation cavity for installing the cylinder (281) is provided on the control rod (26), and a fixing hole (283) is provided on the flange (282); The two ends of the control rope A (280) are respectively connected to the ends of two rod bodies (285); and the inner wall of the column B (24) is provided with a positioning pin hole for inserting the rod body (285).

7. A lithium battery weighing device for production according to claim 6, characterized in that: A crossbar (60) is connected between the two mounting seats (25), and the crossbar (60) is provided with three control mechanisms (6) along its length direction for respectively controlling the activities of three control ropes A (280); The control mechanism (6) comprises a housing (61) mounted on a crossbar (60), a blind hole (62) being provided on the housing (61), a through hole (63) being provided on the bottom side of the blind hole (62), a T-shaped pull rod (64) sliding along the inner wall of the blind hole (62) being connected to the bottom side of the blind hole (62) via a spring B (65), a control rope B (66) penetrating the through hole (63) being connected to the end of the T-shaped pull rod (64), the end of the control rope B (66) being connected to a ring body (67), and the control rope A (280) passing through the ring body (67).

8. A lithium battery weighing device for production according to claim 3, characterized in that: The ends of the support beam group are provided with a limiting mechanism (5) for limiting the rectangular plate (30) from sliding along the upper surface of the support beam (23); The limiting mechanism (5) comprises a U-shaped frame (50) pivotally connected to two support beams (23); two opposite inner side walls of the U-shaped frame (50) are respectively provided with guide slots (51); a rectangular sliding block (52) is arranged between the two guide slots (51); a positioning rod (57) is arranged on one side of the rectangular sliding block (52); a positioning hole A (231) for inserting the positioning rod (57) is arranged on the end surface of the support beam (23); a boss (55) is arranged on the rectangular sliding block (52) between the two positioning rods (57); a bolt (56) is threadedly connected to the boss (55); The U-shaped frame (50) is threadedly connected with an adjusting bolt (54) whose end abuts against a rectangular sliding block (52); guide holes (501) are respectively arranged on the U-shaped frame (50) at both sides of the adjusting bolt (54); and the rectangular sliding block (52) is provided with a guide rod (53) for the guide hole (501) to pass through; and a positioning insertion hole B (232) for inserting a positioning insertion rod (57) is arranged on the end side wall of the support beam (23).

9. A lithium battery weighing device for production according to claim 3, characterized in that: A base (293) is provided at one end of the rectangular frame (2), a hinge seat (292) is rotatably connected to the base (293), a hinge head (290) is hingedly connected to the hinge seat (292), an operating rod (29) is connected to the hinge head (290), and a gripping rod (291) perpendicular to the operating rod (29) is provided at the end of the operating rod (29).

10. A lithium battery weighing device for production according to any one of claims 3 to 9, characterized in that: A mounting cavity (11) which is recessed downward and used for mounting a three-axis moving mechanism is provided on the ground (1), and a pair of limiting beams (12) are provided on the ground (1) at both sides of the mounting cavity (11), wherein the two limiting beams (12) form a path for limiting the movement of the roller (20); Both ends of the path are respectively provided with downwardly recessed arc grooves (13), and the bottom side surfaces of the arc grooves (13) are provided with pressure sensing mechanisms.

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