Battery film pulling mechanism and battery film pulling device

Abstract

A battery film pulling mechanism and a battery film pulling device, the battery film pulling mechanism comprising a lifting assembly and a film pulling assembly, the film pulling assembly comprising a support plate, a first driving member, a transmission structure, a plurality of clamping rods and a plurality of suction cups, the support plate being connected and fixed with the lifting assembly, the first driving member being installed on the support plate and connected with the transmission structure, the transmission structure being slidingly connected with the support plate and fixedly connected with the plurality of clamping rods, the plurality of clamping rods being arranged in sequence and at intervals below the support plate, and each of the opposite surfaces of the adjacent two clamping rods being provided with a plurality of suction cups; the lifting assembly is used to drive the film pulling assembly to lift, the first driving member drives the plurality of clamping rods to move through the transmission structure, so that the adjacent two clamping rods move close to or away from each other, and the plurality of suction cups are used to adsorb a plurality of batteries and to pull open the aluminum plastic film of the plurality of batteries, thereby realizing batch film pulling operation of the plurality of batteries and improving the efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery film-pulling technology, specifically to a battery film-pulling mechanism and a battery film-pulling device. Background Technology

[0002] A pouch battery is a type of battery that typically consists of a battery cell and an aluminum-plastic film covering the cell. During the battery manufacturing process, electrolyte needs to be injected into the cell. This injection involves tearing open the aluminum-plastic film and injecting the electrolyte into the cell through an opening in the film.

[0003] Current film-pulling mechanisms can only pull apart the aluminum-plastic film of a single battery, which is inefficient. Utility Model Content

[0004] The purpose of this invention is to provide a battery film-pulling mechanism and a battery film-pulling device to solve the problem of low film-pulling efficiency.

[0005] To achieve the objectives of this utility model, the following technical solution is provided: In a first aspect, this utility model provides a battery film-pulling mechanism, comprising: Lifting assembly; The film stretching assembly includes a support plate, a first driving component, a transmission structure, multiple clamping rods, and multiple suction cups. The support plate is connected and fixed to the lifting assembly. The first driving component is installed on the support plate and connected to the transmission structure. The transmission structure is slidably connected to the support plate and connected and fixed to the multiple clamping rods. The multiple clamping rods are located below the support plate and arranged sequentially at intervals. Multiple suction cups are provided on the opposite surfaces of each pair of adjacent clamping rods. The film-pulling assembly is provided with a conveying mechanism below it, which is used to transport multiple batteries; the lifting assembly is used to drive the film-pulling assembly to lift and lower; the first driving member drives multiple clamping rods to move through the transmission structure, so that two adjacent clamping rods move closer or further apart; and multiple suction cups are used to adsorb multiple batteries and to pull apart the aluminum-plastic film of multiple batteries.

[0006] In one embodiment, the transmission structure includes a transmission coupling component and a plurality of sliding components. A first slide rail is provided on the support plate, and the first slide rail extends along the arrangement direction of the plurality of clamping rods. The transmission coupling component is connected to the first driving component and simultaneously connected to the plurality of sliding components. The plurality of sliding components are connected to the plurality of clamping rods one by one. The first driving component drives the transmission coupling component to move the plurality of sliding components along the first slide rail, and adjacent sliding components are either close to or far from each other.

[0007] In one embodiment, the transmission mating component includes a mating part and a cam plate. A second slide rail is provided on the support plate, extending along the length direction of the clamping rods. The mating part is connected to the first driving member and the cam plate, and the cam plate is slidably connected to the second slide rail. The cam plate has multiple sliding grooves arranged sequentially along the arrangement direction of the clamping rods. The length direction of each groove forms an angle with both the length direction of the clamping rods and the arrangement direction of the clamping rods. Adjacent grooves are axially symmetrical, with the axis of symmetry extending along the length direction of the clamping rods. Multiple sliding members are slidably connected to the multiple sliding grooves one-to-one. The first driving member drives the mating part to slide the cam plate along the second slide rail, and the cam plate drives the multiple sliding members to slide along the first slide rail, with adjacent sliding members either approaching or moving away from each other.

[0008] In one embodiment, a mating post is mounted on the sliding member, and a rotating member is sleeved on the mating post. The rotating member is rotatably connected to the mating post, the mating post extends into the sliding groove, and the rotating member is used to contact the side wall of the sliding groove.

[0009] In one embodiment, the lifting assembly includes a fixed plate, a first guide rod, a first lifting plate, a second guide rod, and a second driving member. The first lifting plate and the fixed plate are spaced apart relative to each other along the direction of gravity, and the first lifting plate is located below the fixed plate. Both the first guide rod and the second guide rod extend along the direction of gravity. The first guide rod is connected and fixed to the first lifting plate, and the fixed plate is slidably connected to the first guide rod. The second guide rod is connected and fixed to the first lifting plate and extends in a direction away from the fixed plate. One end of the second guide rod away from the first lifting plate is connected and fixed to the support plate. The second driving member is installed on the fixed plate and connected to the first lifting plate for driving the first lifting plate to rise and fall.

[0010] In one embodiment, the device further includes a flaring assembly, which includes a first lifting structure and a plurality of flaring rods. The first lifting structure is connected to the lifting assembly, and the plurality of flaring rods are spaced apart and all connected to the first lifting structure. The first lifting structure is used to drive the plurality of flaring rods to rise and fall, and the plurality of flaring rods are used to extend one-to-one into the opening of the aluminum-plastic film torn open by the film-pulling assembly, so as to simultaneously enlarge the plurality of openings.

[0011] In one embodiment, the first lifting structure includes a third driving member and a second lifting plate. The third driving member is mounted on the first lifting plate and connected to the second lifting plate. The second lifting plate is slidably connected to the second guide rod. A plurality of flared rods are connected to the second lifting plate and extend away from the first lifting plate.

[0012] In one embodiment, the system further includes a liquid injection assembly, which includes a second lifting structure and a plurality of liquid injection needles. The second lifting structure is connected to the lifting assembly, and the plurality of liquid injection needles are spaced apart and all connected to the second lifting structure. The second lifting structure is used to drive the plurality of liquid injection needles to rise and fall, and the plurality of liquid injection needles are used to extend one-to-one into the opening of the aluminum-plastic film torn open by the film-tearing assembly, so as to inject liquid into the plurality of batteries simultaneously.

[0013] In one embodiment, it further includes: The flaring assembly includes a first lifting structure and a plurality of flaring rods. The first lifting structure is connected to the lifting assembly. The plurality of flaring rods are spaced apart and all connected to the first lifting structure. The first lifting structure is used to drive the plurality of flaring rods to rise and fall. The plurality of flaring rods are used to extend one by one into the opening of the aluminum-plastic film torn open by the film-pulling assembly, so as to simultaneously enlarge the plurality of openings. The liquid injection assembly includes a second lifting structure and a plurality of liquid injection needles. The second lifting structure is connected to the lifting assembly. The plurality of liquid injection needles are spaced apart and are all connected to the second lifting structure. The second lifting structure is used to drive the plurality of liquid injection needles to rise and fall. The plurality of liquid injection needles are used to extend one-to-one into the opening of the aluminum-plastic film enlarged by the flaring assembly to inject liquid into the plurality of batteries simultaneously.

[0014] Secondly, the present invention also provides a battery film-pulling device, including a conveying mechanism and a battery film-pulling mechanism as described in any of the various embodiments of the first aspect. The conveying mechanism is located below the film-pulling assembly and is used to convey multiple batteries. The lifting assembly is used to drive the film-pulling assembly to lift and lower, and the film-pulling assembly is used to pull apart the aluminum-plastic film of the multiple batteries.

[0015] This utility model discloses a battery film-pulling assembly. A first driving component drives a transmission structure to move multiple clamping rods. Adjacent clamping rods move closer or further apart, and multiple suction cups on the clamping rods can adsorb and pull the aluminum-plastic film from multiple batteries, thus enabling batch film-pulling operations on multiple batteries and improving efficiency. Furthermore, a single first driving component can perform batch film-pulling operations, reducing the number of power sources and lowering costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of a battery film-pulling mechanism according to one embodiment; Figure 2 This is a perspective view of the battery film-pulling mechanism of one embodiment; Figure 3 This is a perspective view of a membrane stretching assembly according to one embodiment; Figure 4 This is a schematic diagram of a film-tearing assembly tearing open an aluminum-plastic film according to one embodiment.

[0018] Explanation of reference numerals in the attached figures: 100-Battery film-pulling mechanism; 10-Lifting assembly, 11-Fixing plate, 12-First guide rod, 13-First lifting plate, 14-Second guide rod, 15-Second driving component, 16-Bushing; 20-film stretching assembly, 21-support plate, 211-cutout area, 22-first driving component, 23-transmission structure, 24-clamping rod, 241-air extraction channel, 242-adjustment hole, 25-suction cup, 251-adsorption channel; 30-Support base; 40-Transmission mating parts, 41-Mating parts, 411-Gear, 412-Rack, 42-Cam plate, 421-Slide groove, 422-First plate, 423-Second plate, 424-Third plate; 50-Sliding component, 51-Main body, 52-First connecting arm, 53-Second connecting arm, 54-First slide rail, 55-Sliding block, 56-Second slide rail, 57-Connecting hole, 58-Matching post, 59-Rotating component; 60-flaring assembly, 61-first lifting structure, 611-third driving component, 612-second lifting plate, 62-flaring rod; 70-Battery, 71-Battery cell, 72-Aluminum-plastic film, 73-Opening. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0021] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this invention includes any and all combinations of one or more of the associated listed items.

[0022] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] Please refer to Figure 1 , Figure 2 and Figure 4 This utility model provides a battery film-pulling mechanism 100, including a lifting assembly 10 and a film-pulling assembly 20. The film-pulling assembly 20 is connected to the lifting assembly 10, and the lifting assembly 10 is used to drive the film-pulling assembly 20 to move up and down. The film-pulling assembly 20 is used to pull open the aluminum-plastic film 72 of the battery 70.

[0024] For ease of explanation, let's first define directions. When the battery film-pulling mechanism 100 is installed and capable of performing the film-pulling function, it has an upper and a lower direction in the direction of gravity. The upper direction is further away from the Earth's center, and the lower direction is closer to the Earth's center. For example, if structure one is below structure two, or structure two is above structure one, it means that structure one is closer to the Earth's center than structure two.

[0025] Here, "lifting" refers to movement up and down along the direction of gravity; of course, the direction of lifting can also have a small angle with the direction of gravity. The structural components of the film-pulling assembly 20 can move horizontally to pull apart the aluminum-plastic film 72 of the battery 70; of course, the direction of movement of the structural components of the film-pulling assembly 20 can also have a small angle with the horizontal.

[0026] Please refer to Figure 1 and Figure 2 The structure of the lifting assembly 10 is not limited, as long as it can drive the film stretching assembly 20 to rise and fall. The film stretching assembly 20 includes a support plate 21, which is connected and fixed to the lifting assembly 10. The support plate 21 is used to install other structures of the film stretching assembly 20. The lifting assembly 10 drives the support plate 21 to rise and fall, thereby driving the entire film stretching assembly 20 to rise and fall.

[0027] Please refer to Figure 3 The film stretching assembly 20 also includes a first driving member 22, a transmission structure 23, multiple clamping rods 24, and multiple suction cups 25. The first driving member 22 is mounted on the support plate 21 and connected to the transmission structure 23. The transmission structure 23 is slidably connected to the support plate 21 and fixedly connected to the multiple clamping rods 24. The multiple clamping rods 24 are located below the support plate 21 and arranged sequentially at intervals. Multiple suction cups 25 are provided on the opposite surfaces of each pair of adjacent clamping rods 24.

[0028] The lower part of the film-pulling assembly 20 is used to set a conveying mechanism (not shown), which is used to transport multiple batteries 70. The lifting assembly 10 drives the film-pulling assembly 20 to rise and fall. The first driving member 22 drives multiple clamping rods 24 to move through the transmission structure 23, so that two adjacent clamping rods 24 move closer or further apart. Multiple suction cups 25 adsorb multiple batteries 70 and are used to pull apart the aluminum-plastic film 72 of multiple batteries 70.

[0029] The specific structures of the first driving component 22 and the transmission structure 23 are not limited, as long as the first driving component 22 can drive multiple clamping rods 24 to move through the transmission structure 23. For example, the first driving component 22 can be a motor, such as a stepper motor or servo motor, or it can be any feasible structure such as a pump or cylinder. The transmission structure 23 can include any feasible mating pair or a combination of these mating pairs, such as a lead screw nut, ball screw, gear rack, worm gear, or cam connecting rod, without limitation. In this embodiment, by using one first driving component 22 as a power source, in conjunction with the transmission structure 23, multiple clamping rods 24 can be driven to move, saving on the number of power sources and reducing costs.

[0030] The clamping rod 24 can be a straight rod extending horizontally. Multiple clamping rods 24 can have identical structures and be arranged parallel to each other. Two adjacent clamping rods 24 form a clamping structure. The number of clamping rods 24 is even, and they can form one or more sets of clamping structures. For example, such as... Figure 3As shown, there are four clamping rods 24. The first and second rods along the arrangement direction form the first clamping structure, and the third and fourth rods form the second clamping structure. It can be understood that the multiple batteries 70 are arranged in m rows and n columns, where m and n are both positive integers and at least one of m and n is greater than 1. When the aluminum-plastic film 72 of the multiple batteries 70 is attracted to the suction cup 25, the row direction (or column direction) of the multiple batteries 70 is the same as the extension direction of the clamping rods 24, and the column direction (or row direction) is the same as the arrangement direction of the multiple clamping rods 24. There are at least two clamping rods 24, forming at least one clamping structure. Each clamping structure corresponds to multiple batteries in the same row (or column), and multiple clamping structures simultaneously correspond to all batteries 70.

[0031] Each clamping structure has multiple suction cups 25 on its opposite surfaces of the two clamping rods 24. The suction cups 25 are arranged in pairs; that is, if one clamping rod 24 has a suction cup 25, the opposite position on the other clamping rod 24 in the same clamping structure also has a suction cup 25. The suction cups 25 on the two clamping rods 24 of each clamping structure correspond one-to-one. For example, as shown... Figure 3 As shown, each clamping structure has a total of 16 suction cups 25, and each clamping rod 24 is equipped with 8 suction cups 25. The 8 suction cups 25 on the two clamping rods 24 are directly opposite each other.

[0032] Optionally, the multiple suction cups 25 on each clamping rod 24 form multiple groups, each group having multiple suction cups 25, and each group of suction cups 25 is used to adhere the aluminum-plastic film 72 of the same battery 70. For example, Figure 3 As shown, the eight suction cups 25 on each clamping rod 24 form four groups, with each group having two adjacent suction cups 25. In this way, a clamping structure can use 16 suction cups 25 to adsorb the aluminum-plastic film 72 of four batteries 70, enabling batch film pulling.

[0033] The suction cup 25 can be adsorbed onto the aluminum-plastic film 72 by vacuuming. It can be connected to the suction cup 25 via an external pipe, or vacuuming can be achieved by providing a channel inside the clamping rod 24 that communicates with the suction cup 25. For example,... Figure 3 and Figure 4 As shown, the clamping rod 24 has an internal air extraction channel 241, and the suction cup 25 has an adsorption channel 251. The air extraction channel 241 and the adsorption channel 251 are connected. An external vacuum device (not shown) can be connected to the air extraction channel 241 through a pipe to evacuate the adsorption channel 251, so that the suction cup 25 adsorbs the aluminum-plastic film 72.

[0034] Combination Figures 1 to 4The working process of the battery film-pulling mechanism 100 in this embodiment is as follows: The conveying mechanism transports the battery 70 to the area below the battery film-pulling mechanism 100. The lifting component 10 drives the film-pulling component 20 to descend. The first driving component 22 drives the two clamping rods 24 of each clamping structure to move closer together through the transmission structure 23, so that the suction cup 25 contacts the aluminum-plastic film 72 of the battery 70. The suction cup 25 draws a vacuum to adsorb the aluminum-plastic film 72. The first driving component 22 then drives the two clamping rods 24 of each clamping structure to move away from each other through the transmission structure 23, so that the suction cup 25 pulls the aluminum-plastic film 72 and causes the aluminum-plastic film 72 to open and enclose an opening 73. Subsequently, liquid injection can be performed through the opening 73 of the aluminum-plastic film 72. After the subsequent operation is completed, the suction cup 25 is devastated, the suction cup 25 separates from the aluminum-plastic film 72, and the lifting component 10 drives the film-pulling component 20 to rise back to the initial position.

[0035] The battery film-pulling assembly 20 of this embodiment uses a first driving member 22 to drive a transmission structure 23, which in turn moves multiple clamping rods 24. Adjacent clamping rods 24 move closer to or further away from each other. Multiple suction cups 25 on the clamping rods 24 can adsorb and pull the aluminum-plastic film 72 from multiple batteries 70, thus enabling batch film-pulling operations on multiple batteries 70 and improving efficiency. Furthermore, a single first driving member 22 can perform batch film-pulling operations, reducing the number of power sources and lowering costs.

[0036] In one embodiment, reference Figure 1 and Figure 2 The lifting assembly 10 includes a fixed plate 11, a first guide rod 12, a first lifting plate 13, a second guide rod 14, and a second driving member 15. The first lifting plate 13 is spaced apart from the fixed plate 11 along the direction of gravity, and the first lifting plate 13 is located below the fixed plate 11. Both the first guide rod 12 and the second guide rod 14 extend along the direction of gravity. The first guide rod 12 is connected and fixed to the first lifting plate 13, and the fixed plate 11 is slidably connected to the first guide rod 12. The second guide rod 14 is connected and fixed to the first lifting plate 13 and extends in a direction away from the fixed plate 11. One end of the second guide rod 14 away from the first lifting plate 13 is connected and fixed to a support plate 21. The second driving member 15 is mounted on the fixed plate 11 and connected to the first lifting plate 13, and is used to drive the first lifting plate 13 to rise and fall.

[0037] Both the fixed plate 11 and the first lifting plate 13 are generally flat and roughly parallel to the support plate 21. The first guide rod 12 and the second guide rod 14 are both straight columnar rods, with their length directions roughly aligned with the direction of gravity. The fixed plate 11 is fixed and serves as the structural support foundation. The first guide rod 12 may be fitted with a bushing 16 and connected to the fixed plate 11 through the bushing 16. The bushing 16 can slide relative to the first guide rod 12. There can be multiple first guide rods 12 and second guide rods 14. For example,... Figure 1and Figure 2 As shown, there are four first guide rods 12 and four second guide rods 14, evenly distributed. This provides stable guidance and limiting, ensuring that the first lifting plate 13 can only move up and down and cannot move in other directions.

[0038] The second driving component 15 can be a motor, cylinder, etc. The second driving component 15 is mounted on the upper surface of the fixed plate 11 and drives the first lifting plate 13 to rise and fall. Compared to mounting the second driving component 15 on the lower surface of the fixed plate 11, mounting it on the upper surface reduces the space occupied between the fixed plate 11 and the first lifting plate 13, allowing the first lifting plate 13 to move as close to the fixed plate 11 as possible during lifting and falling, resulting in a more compact structure. If the second driving component 15 is a motor, it can be connected to the first lifting plate 13 and driven through a transmission method such as a ball screw; if the second driving component 15 is a cylinder, the cylinder's extension rod is connected to the first lifting plate 13, and the drive is achieved through the extension and retraction of the cylinder's extension rod.

[0039] Optionally, the battery film-pulling mechanism 100 also includes a support base 30, which can be installed on the ground or other support platform. The fixing plate 11 is fixedly installed on the top of the support base 30, and the film-pulling assembly 20 can be positioned entirely on one side of the support base 30. The height of the support base 30 can be reasonably set so that when the lifting assembly 10 drives the film-pulling assembly 20 to rise or fall, the film-pulling assembly 20 will not contact the ground or other support platform, thus avoiding structural interference.

[0040] In one embodiment, reference Figure 2 and Figure 3 The transmission structure 23 includes a transmission mating component 40 and multiple sliding components 50. A first slide rail 54 is provided on the support plate 21, extending along the arrangement direction of the multiple clamping rods 24. The transmission mating component 40 is connected to a first driving component 22 and simultaneously to the multiple sliding components 50, with each sliding component 50 corresponding to one of the clamping rods 24. The first driving component 22 drives the transmission mating component 40, causing the multiple sliding components 50 to slide along the first slide rail 54, with adjacent sliding components 50 either moving closer to or further away from each other.

[0041] The support plate 21 can be roughly flat. The support plate 21 can have several hollow areas 211 that penetrate its upper and lower surfaces. The upper surface of the support plate 21 is connected and fixed to the lifting assembly 10. The first slide rail 54 is set on the upper surface of the support plate 21. The sliding member 50 passes through the hollow area 211 of the support plate 21 and is connected and fixed to the clamping rod 24 below the support plate 21.

[0042] Optionally, two first slide rails 54 may be provided on the support plate 21. The two first slide rails 54 are spaced apart along the length of the clamping rods 24, and both first slide rails 54 extend along the arrangement direction of the plurality of clamping rods 24. The two ends of the sliding member 50 are slidably connected to one of the first slide rails 54 respectively. Alternatively, the number of first slide rails 54 provided on the support plate 21 may be one, three or more, without limitation. The extension direction of the clamping rods 24 is its length direction, the extension direction of the first slide rails 54 is also its length direction, and the arrangement direction of the plurality of clamping rods 24 is perpendicular to the extension direction of the clamping rods 24.

[0043] Optional, such as Figure 3 As shown, the slider 50 includes a main body 51, two first connecting arms 52, and two second connecting arms 53. The extension direction of the main body 51 is the same as the extension direction of the clamping rod 24; the two first connecting arms 52 are respectively connected to both ends of the main body 51 in the length direction, and the two first connecting arms 52 are slidably connected to the two first slide rails 54; the two second connecting arms 53 are respectively inserted through the hollow area 211 of the support plate 21, and one end of each of the two second connecting arms 53 is connected to the main body 51, and the other end is connected to the clamping rod 24.

[0044] Optionally, the clamping rod 24 may have an adjustment hole 242, the length direction of which is the same as that of the clamping rod 24. The second connecting arm 53 has a corresponding connecting hole 57. The second connecting arm 53 and the clamping rod 24 can be connected by screws or bolts passing through the adjustment hole 242 and the connecting hole 57 and being locked. When the screws or bolts are not tightened, they can move along the length direction of the adjustment hole 242, thus facilitating the adjustment of the relative position of the clamping rod 24 and the sliding member 50 to accurately align the suction cup 25 on the clamping rod 24 with the battery 70.

[0045] Optional, such as Figure 3 As shown, a plurality of sliders 55 may be provided on the first slide rail 54. The sliders 55 are slidably connected to the first slide rail 54, and a plurality of sliding members 50 are connected and fixed to the sliders 55 one by one. Specifically, a plurality of first connecting arms 52 are connected and fixed to the sliders 55. In this way, the sliding members 50 can be indirectly slidably connected to the first slide rail 54 through the sliders 55. The first slide rail 54 and the plurality of sliders 55 thereon can constitute a component. Alternatively, the plurality of sliding members 50 can also be directly slidably connected to the first slide rail 54.

[0046] The transmission mating component 40 may include any feasible mating pair such as lead screw nut, ball screw, gear rack, worm gear, cam connecting rod, or a composite structure formed by a combination of these mating pairs, without any limitation.

[0047] The first slide rail 54 extends along the arrangement direction of the multiple clamping rods 24, and the sliding member 50 is slidably connected to the first slide rail 54. This guides and limits the sliding direction of the sliding member 50, and fixes the moving direction of the clamping rod 24 connected to the sliding member 50, ensuring the stability and reliability of the movement. This allows the multiple suction cups 25 on the clamping rod 24 to stably adsorb and pull the film.

[0048] In one embodiment, reference Figure 2 and Figure 3 The transmission mating component 40 includes a mating part 41 and a cam plate 42. A second slide rail 56 is provided on the support plate 21, and the second slide rail 56 extends along the length direction of the clamping rod 24. The mating part 41 is connected to the first driving component 22 and the cam plate 42, and the cam plate 42 is slidably connected to the second slide rail 56.

[0049] The second slide rail 56 can be disposed on the upper surface of the support plate 21. The extension direction of the second slide rail 56 is its length direction, and the extension direction of the second slide rail 56 is perpendicular to the extension direction of the first slide rail 54. The number of second slide rails 56 can also be one or more, for example, such as... Figure 3 As shown, there are two second slide rails 56, which are spaced apart along the arrangement direction of the multiple clamping rods 24. The two second slide rails 56 are slidably connected to different positions of the cam plate 42. Similar to the first slide rail 54, the second slide rail 56 can also be equipped with a slider 55, and the cam plate 42 is connected to the slider 55. Of course, the cam plate 42 can also be directly slidably connected to the second slide rail 56.

[0050] The mating part 41 may include any feasible mating pair or a composite structure formed by a combination of such mating pairs, such as a lead screw nut, ball screw, gear rack, worm gear, cam connecting rod, etc., without limitation. For example, Figure 3 As shown, the mating part 41 includes a gear 411 and a rack 412. The first driving member 22 is a motor. The gear 411 is connected to the output shaft of the motor, and the rack 412 is connected and fixed to the cam plate 42. The gear 411 and the rack 412 mesh, and the length direction of the rack 412 is the same as the length direction of the clamping rod 24. The first driving member 22 drives the gear 411 to rotate, the gear 411 drives the rack 412 to move, and the rack 412 drives the cam plate 42 to slide along the second slide rail 56.

[0051] The cam plate 42 has multiple sliding grooves 421 arranged sequentially along the arrangement direction of the multiple clamping rods 24. The multiple sliding grooves 421 can penetrate the upper and lower surfaces of the cam plate 42, or they can be opened from the lower surface of the cam plate 42 without penetrating to the upper surface. Each sliding groove 421 extends in a straight line, and the length direction of each sliding groove 421 forms an angle with the length direction of the clamping rods 24 and the arrangement direction of the multiple clamping rods 24. Adjacent sliding grooves 421 are axially symmetrical, and the axis of symmetry extends along the length direction of the clamping rods 24. Multiple sliding members 50 are slidably connected to the multiple sliding grooves 421 one-to-one. The first driving member 22 drives the mating part 41 to move the cam plate 42 along the second slide rail 56, and the cam plate 42 drives the multiple sliding members 50 to move along the first slide rail 54, with adjacent sliding members 50 either approaching or moving away from each other.

[0052] The cam plate 42 is generally a flat plate, and its shape is not limited. For example, such as... Figure 3 As shown, the cam plate 42 can be roughly Y-shaped and includes a first plate 422, a second plate 423, and a third plate 424. The rack 412 of the mating part 41 is connected and fixed to the first plate 422. The second plate 423 is slidably connected to a second slide rail 56, and the third plate 424 is slidably connected to another second slide rail 56. The second plate 423 and the third plate 424 are spaced apart and connected to the first plate 422. The second plate 423 has two slide grooves 421 corresponding to a set of clamping rods 24, and the third plate 424 also has two slide grooves 421 corresponding to another set of clamping rods 24. The second plate 423 and the third plate 424 can be symmetrical with respect to the first plate 422.

[0053] The aforementioned groove 421 is configured such that the two grooves 421 corresponding to a set of clamping rods 24 are approximately in a figure-eight shape. Due to the guidance and limiting effect of the first slide rail 54, the sliding member 50 and the clamping rod 24 connected thereto can only slide along the arrangement direction of the multiple clamping rods 24. Due to the guidance and limiting effect of the second slide rail 56, the cam plate 42 can only slide along the length direction of the clamping rods 24. By setting the aforementioned figure-eight shaped grooves 421, when the cam plate 42 slides along the second slide rail 56, the two sliding members 50 can slide in the two grooves 421 respectively. The sidewalls of the grooves 421 guide and limit the sliding members 50, allowing the two sliding members 50 to slide relatively close to or far away from each other along the first slide rail 54. For example, as shown... Figure 3As shown, when the first driving member 22 drives the gear 411 to rotate clockwise, the rack 412 moves to the right, causing the cam plate 42 to move to the right. The multiple sliding members 50 cannot move in the left-right direction, but can only move along the length of the first slide rail 54. Because the two slide grooves 421 are in a figure-eight shape, the two sliding members 50 move away from each other, thereby causing the two clamping rods 24 of the clamping structure to move away from each other. When the first driving member 22 drives the gear 411 to rotate counterclockwise, a similar process occurs, causing the two sliding members 50 to move closer together, thereby causing the two clamping rods 24 of the clamping structure to move closer together.

[0054] The length of the slide groove 421 can be set as needed. When the sliding member 50 contacts the end sidewall of the slide groove 421 along its length, the driving member stops the rotation of the driving gear 411. Thus, the slide groove 421 also serves to limit the extreme positions of the two clamping rods 24 when they approach or move away from each other. Figure 3 As shown, at this time, the sliding member 50 is close to the side wall of the first driving member 22 along the length direction of the slide groove 421. Therefore, the angle at which the gear 411 can rotate clockwise is very small, while the angle at which it can rotate counterclockwise is very large.

[0055] By setting multiple sliding grooves 421 on the cam plate 42, a first driving member 22 drives the cam plate 42 to slide along the second slide rail 56 through the mating part 41, thereby driving multiple sliding members 50 and the clamping rods 24 connected to the sliding members 50 to slide along the first slide rail 54, and realizing that two adjacent clamping rods 24 move closer or further away from each other, thereby realizing the functions of adsorbing aluminum-plastic film 72 and pulling aluminum-plastic film 72. The structure is simple, the cost is low, and it can realize the synchronous film pulling of multiple batteries 70.

[0056] Optional, see reference Figure 3 A mating post 58 is mounted on the sliding member 50, and a rotating member 59 is sleeved on the mating post 58. The rotating member 59 is rotatably connected to the mating post 58. The mating post 58 extends into the slide groove 421, and the rotating member 59 is used to contact the side wall of the slide groove 421. The mating post 58 is columnar, and the rotating member 59 is, for example, a sleeve or bearing. The rotating member 59 can rotate freely and extends into the slide groove 421. Through the free rotation of the rotating member 59, the rotating member 59 can roll relative to the side wall of the slide groove 421, thereby reducing the friction between the sliding member 50 and the slide groove 421, reducing noise and energy consumption, and improving efficiency.

[0057] In one embodiment, reference Figure 1 , Figure 2 and Figure 4The battery film-pulling mechanism 100 also includes a flaring assembly 60. The flaring assembly 60 includes a first lifting structure 61 and multiple flaring rods 62. The first lifting structure 61 is connected to the lifting assembly 10, and the multiple flaring rods 62 are spaced apart and all connected to the first lifting structure 61. The first lifting structure 61 is used to drive the multiple flaring rods 62 to rise and fall. The multiple flaring rods 62 are used to extend one-to-one into the openings 73 of the aluminum-plastic film 72 pulled open by the film-pulling assembly 20, so as to synchronously enlarge the multiple openings 73.

[0058] As explained earlier, the film-pulling assembly 20 can pull the aluminum-plastic film 72 to form an opening 73, through which electrolyte can be injected. In this embodiment, the structure of the first lifting structure 61 is not limited; it can drive multiple flaring rods 62 to rise and fall, and flare the opening 73 of the aluminum-plastic film 72 that has been pulled open by the film-pulling assembly 20, increasing the size of the opening 73. This makes it easier to inject electrolyte and prevents the electrolyte from spilling onto the outer surface of the aluminum-plastic film 72 during injection if the opening 73 is too small, thus preventing it from entering the battery cell 71 through the opening 73.

[0059] The structure of the flaring rod 62 is not limited. It can be extended into the smaller opening 73 of the aluminum-plastic film 72 by lifting and lowering, and then expand the opening 73 to achieve flaring. Multiple flaring rods 62 can simultaneously flare multiple batteries 70 that have already had their films stretched by the film-stretching assembly 20, thereby improving flaring efficiency. Subsequent liquid injection can be performed through the battery film-stretching mechanism 100 of this embodiment or other liquid injection mechanisms, without limitation.

[0060] Optional, see reference Figure 1 and Figure 2 The first lifting structure 61 includes a third driving member 611 and a second lifting plate 612. The third driving member 611 is installed on the first lifting plate 13 and connected to the second lifting plate 612. The second lifting plate 612 is slidably connected to the second guide rod 14. A plurality of flared rods 62 are connected to the second lifting plate 612 and extend away from the first lifting plate 13.

[0061] The second lifting plate 612 is generally flat and roughly parallel to the first lifting plate 13. The second guide rod 14 may also be fitted with a bushing 16 and connected to the second lifting plate 612 through the bushing 16. The bushing 16 and the second guide rod 14 can slide relative to each other. The third driving component 611 can be a motor, cylinder, etc. In the embodiment where the third driving component 611 is a motor, the third driving component 611 can be connected to the second lifting plate 612 through a ball screw or other mating pair; in the embodiment where the third driving component 611 is a cylinder, the telescopic rod of the third driving component 611 is connected to the second lifting plate 612. The third driving component 611 can drive the second lifting plate 612 to slide along the second guide rod 14 to achieve lifting. This design structure is simple and makes full use of the existing structure of the lifting assembly 10 for installation, resulting in low cost.

[0062] In another embodiment, reference Figure 1 and Figure 2 The battery film-pulling mechanism 100 also includes an injection assembly (not shown). The injection assembly includes a second lifting structure (not shown) and multiple injection needles (not shown). The second lifting structure is connected to the lifting assembly 10, and the multiple injection needles are spaced apart and all connected to the second lifting structure. The second lifting structure is used to drive the multiple injection needles to rise and fall, and the multiple injection needles are used to extend one-to-one into the openings 73 of the aluminum-plastic film 72 pulled open by the film-pulling assembly 20 to inject liquid synchronously into multiple batteries 70.

[0063] In this embodiment, the second lifting structure can have the same function as the first lifting structure 61 in the aforementioned embodiment, and its structure can also refer to the aforementioned embodiment. Of course, a different structure from the aforementioned first lifting structure 61 can also be adopted, and there are no limitations. The multiple injection needles are similar to the aforementioned multiple flaring rods 62. For example, the aforementioned flaring rods 62 can be replaced with injection needles.

[0064] In this embodiment, after the film-pulling assembly 20 pulls open the aluminum-plastic film 72 of the multiple batteries 70 to form an opening 73, liquid can be injected directly through the liquid injection assembly without performing a flaring operation, or liquid can be injected through the liquid injection assembly after the flaring operation. In this embodiment, the flaring operation can be performed through the aforementioned flaring assembly 60, or through other flaring mechanisms, without limitation.

[0065] For example, a battery film-pulling mechanism 100 with the aforementioned flaring assembly 60 and a battery film-pulling mechanism 100 with the aforementioned liquid injection assembly can be sequentially arranged on the moving path of a conveying mechanism that transports multiple batteries 70, so as to perform flaring and liquid injection in sequence. In this embodiment, the film is pulled by the film-pulling assembly 20 during both flaring and liquid injection. The difference is that when the battery film-pulling assembly 20 with the liquid injection assembly pulls the film, the aluminum-plastic film 72 of this battery 70 has already undergone one film-pulling and flaring operation at the battery film-pulling mechanism 100 with the flaring assembly 60.

[0066] In another embodiment, the battery film-pulling mechanism 100 further includes a flaring assembly 60 and a liquid injection assembly. The flaring assembly 60 and the liquid injection assembly are basically the same as those described above, namely: the flaring assembly 60 includes a first lifting structure 61 and a plurality of flaring rods 62. The first lifting structure 61 is connected to the lifting assembly 10. The plurality of flaring rods 62 are spaced apart and all connected to the first lifting structure 61. The first lifting structure 61 is used to drive the plurality of flaring rods 62 to rise and fall. The plurality of flaring rods 62 are used to extend one-to-one into the openings 73 of the aluminum-plastic film 72 pulled open by the film-pulling assembly 20, so as to synchronously enlarge the plurality of openings 73. The liquid injection assembly includes a second lifting structure and a plurality of liquid injection needles. The second lifting structure is connected to the lifting assembly 10. The plurality of liquid injection needles are spaced apart and all connected to the second lifting structure. The second lifting structure is used to drive the plurality of liquid injection needles to rise and fall. The plurality of liquid injection needles are used to extend one-to-one into the openings 73 of the aluminum-plastic film 72 enlarged by the flaring assembly 60, so as to synchronously inject liquid into the plurality of batteries 70.

[0067] In this embodiment, a flaring assembly 60 and a liquid injection assembly are simultaneously provided on a battery film-stretching mechanism 100. The structures of the flaring assembly 60 and the liquid injection assembly can be referred to the foregoing description. It should be noted that the flaring assembly 60 and the liquid injection assembly should avoid structural interference. This can be achieved by controlling the lengths of the flaring rod 62 and the liquid injection needle to be different, and by having the first lifting structure 61 and the second lifting structure spaced apart on the second guide rod 14. By simultaneously providing the flaring assembly 60 and the liquid injection assembly on a single battery film-stretching mechanism 100, one set of equipment can perform flaring and liquid injection simultaneously, saving on the number of devices, reducing costs, and improving efficiency.

[0068] The battery film-pulling mechanism 100 of this utility model embodiment may also include detection sensors, pipelines, pipe joints, valves, etc., for driving control, position detection and control of the movement of each structure, etc., without further limitation.

[0069] Based on the battery film-pulling mechanism 100 of the above embodiments, this utility model embodiment also provides a battery film-pulling device (not shown), including a conveying mechanism and the battery film-pulling mechanism 100 of any of the foregoing embodiments. The conveying mechanism is located below the film-pulling assembly 20 and is used to convey multiple batteries 70. The lifting assembly 10 is used to drive the film-pulling assembly 20 to rise and fall, and the film-pulling assembly 20 is used to pull apart the aluminum-plastic film 72 of the multiple batteries 70.

[0070] There are no restrictions on the specific type of conveying mechanism; it can be either linear conveying or rotary conveying.

[0071] The battery film-pulling device of this embodiment can simultaneously pull the film from multiple batteries 70, realizing batch film-pulling operations on multiple batteries 70, which can improve efficiency; in some embodiments, it can also perform flaring and / or liquid injection, further improving efficiency and reducing costs.

[0072] In the description of the embodiments of this utility model, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0073] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the present utility model.

Claims

1. A battery film-pulling mechanism (100), characterized in that, include: Lifting assembly (10); The film stretching assembly (20) includes a support plate (21), a first driving member (22), a transmission structure (23), multiple clamping rods (24) and multiple suction cups (25). The support plate (21) is connected and fixed to the lifting assembly (10). The first driving member (22) is installed on the support plate (21) and connected to the transmission structure (23). The transmission structure (23) is slidably connected to the support plate (21) and connected and fixed to the multiple clamping rods (24). The multiple clamping rods (24) are located below the support plate (21) and arranged in sequence at intervals. Multiple suction cups (25) are provided on the opposite surfaces of two adjacent clamping rods (24). The film-pulling assembly (20) is provided with a conveying mechanism below it, which is used to convey multiple batteries (70); the lifting assembly (10) is used to drive the film-pulling assembly (20) to lift; the first driving member (22) drives multiple clamping rods (24) to move through the transmission structure (23) so that two adjacent clamping rods (24) move closer or further away from each other; and multiple suction cups (25) are used to adsorb multiple batteries (70) and to pull apart the aluminum-plastic film (72) of multiple batteries (70).

2. The battery film-pulling mechanism (100) according to claim 1, characterized in that, The transmission structure (23) includes a transmission coupling component (40) and a plurality of sliding components (50). The support plate (21) is provided with a first slide rail (54), which extends along the arrangement direction of the plurality of clamping rods (24). The transmission coupling component (40) is connected to the first driving component (22) and simultaneously connected to the plurality of sliding components (50). The plurality of sliding components (50) are connected to the plurality of clamping rods (24) one by one. The first driving component (22) drives the transmission coupling component (40) to drive the plurality of sliding components (50) to slide along the first slide rail (54), and two adjacent sliding components (50) are close to or far from each other.

3. The battery film-pulling mechanism (100) according to claim 2, characterized in that, The transmission mating component (40) includes a mating part (41) and a cam plate (42). A second slide rail (56) is provided on the support plate (21). The second slide rail (56) extends along the length direction of the clamping rod (24). The mating part (41) is connected to the first driving member (22) and the cam plate (42). The cam plate (42) is slidably connected to the second slide rail (56). The cam plate (42) has multiple slide grooves (421) arranged sequentially along the arrangement direction of the multiple clamping rods (24). The length direction of each slide groove (421) is parallel to the length of the clamping rod (24). The angle between the angle direction and the arrangement direction of the multiple clamping rods (24) is included. The two adjacent slide grooves (421) are axially symmetrical, and the axis of symmetry extends along the length direction of the clamping rod (24). The multiple sliding members (50) are slidably connected to the multiple slide grooves (421) one by one. The first driving member (22) drives the mating part (41) to drive the cam plate (42) to slide along the second slide rail (56). The cam plate (42) drives the multiple sliding members (50) to slide along the first slide rail (54), and the two adjacent sliding members (50) are close to each other or far away from each other.

4. The battery film-pulling mechanism (100) according to claim 3, characterized in that, A mating post (58) is installed on the sliding member (50), and a rotating member (59) is sleeved on the mating post (58). The rotating member (59) is rotatably connected to the mating post (58), the mating post (58) extends into the slide groove (421), and the rotating member (59) is used to contact the side wall of the slide groove (421).

5. The battery film-pulling mechanism (100) according to any one of claims 1 to 4, characterized in that, The lifting assembly (10) includes a fixed plate (11), a first guide rod (12), a first lifting plate (13), a second guide rod (14), and a second driving member (15). The first lifting plate (13) and the fixed plate (11) are spaced apart relative to each other along the direction of gravity, and the first lifting plate (13) is located below the fixed plate (11). The first guide rod (12) and the second guide rod (14) both extend along the direction of gravity. The first guide rod (12) is connected and fixed to the first lifting plate (13). The fixed plate (11) is slidably connected to the first guide rod (12). The second guide rod (14) is connected and fixed to the first lifting plate (13) and extends in a direction away from the fixed plate (11). One end of the second guide rod (14) away from the first lifting plate (13) is connected and fixed to the support plate (21). The second driving member (15) is installed on the fixed plate (11) and connected to the first lifting plate (13) for driving the first lifting plate (13) to lift.

6. The battery film-pulling mechanism (100) according to claim 5, characterized in that, It also includes a flaring assembly (60), which includes a first lifting structure (61) and a plurality of flaring rods (62). The first lifting structure (61) is connected to the lifting assembly (10). The plurality of flaring rods (62) are spaced apart and all connected to the first lifting structure (61). The first lifting structure (61) is used to drive the plurality of flaring rods (62) to rise and fall. The plurality of flaring rods (62) are used to extend into the openings (73) of the aluminum-plastic film (72) torn open by the film-pulling assembly (20) in a corresponding manner, so as to simultaneously enlarge the plurality of openings (73).

7. The battery film-pulling mechanism (100) according to claim 6, characterized in that, The first lifting structure (61) includes a third driving member (611) and a second lifting plate (612). The third driving member (611) is installed on the first lifting plate (13) and connected to the second lifting plate (612). The second lifting plate (612) is slidably connected to the second guide rod (14). A plurality of the flared rods (62) are connected to the second lifting plate (612) and extend away from the first lifting plate (13).

8. The battery film-pulling mechanism (100) according to any one of claims 1 to 4, characterized in that, It also includes a liquid injection assembly, which includes a second lifting structure and a plurality of liquid injection needles. The second lifting structure is connected to the lifting assembly (10). The plurality of liquid injection needles are spaced apart and are all connected to the second lifting structure. The second lifting structure is used to drive the plurality of liquid injection needles to rise and fall. The plurality of liquid injection needles are used to extend one by one into the opening (73) of the aluminum-plastic film (72) torn open by the film-pulling assembly (20) to inject liquid into the plurality of batteries (70) simultaneously.

9. The battery film-pulling mechanism (100) according to any one of claims 1 to 4, characterized in that, Also includes: The flaring assembly (60) includes a first lifting structure (61) and a plurality of flaring rods (62). The first lifting structure (61) is connected to the lifting assembly (10). The plurality of flaring rods (62) are spaced apart and all connected to the first lifting structure (61). The first lifting structure (61) is used to drive the plurality of flaring rods (62) to rise and fall. The plurality of flaring rods (62) are used to extend into the openings (73) of the aluminum-plastic film (72) torn open by the film-pulling assembly (20) in a corresponding manner, so as to simultaneously enlarge the plurality of openings (73). The liquid injection assembly includes a second lifting structure and multiple liquid injection needles. The second lifting structure is connected to the lifting assembly (10). The multiple liquid injection needles are spaced apart and all connected to the second lifting structure. The second lifting structure is used to drive the multiple liquid injection needles to rise and fall. The multiple liquid injection needles are used to extend one-to-one into the opening (73) of the aluminum-plastic film (72) enlarged by the flaring assembly (60) to inject liquid into the multiple batteries (70) simultaneously.

10. A battery film-stretching device, characterized in that, Includes a conveying mechanism and a battery film-pulling mechanism (100) as described in any one of claims 1 to 9, wherein the conveying mechanism is located below the film-pulling assembly (20) and is used to convey a plurality of batteries (70); the lifting assembly (10) is used to drive the film-pulling assembly (20) to lift and lower; and the film-pulling assembly (20) is used to pull apart the aluminum-plastic film (72) of the plurality of batteries (70).

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