Battery liquid injection device

Abstract

A battery liquid injection device comprises a conveying mechanism, a flaring mechanism and a liquid injection mechanism. The conveying mechanism comprises a first driving member and a disc. The first driving member is connected with the disc and is used to drive the disc to rotate. The disc is provided with a plurality of placing positions arranged in an annular array. The flaring mechanism is arranged above the disc and is used to tear the aluminum plastic film to enclose an opening and enlarge the opening. The liquid injection mechanism is arranged above the disc and is used to inject electrolyte into the battery through the enlarged opening. The flaring mechanism and the liquid injection mechanism are arranged along the ring direction of the disc at intervals. The disc rotates to drive the placing positions to be aligned with the flaring mechanism and the liquid injection mechanism in turn. When one of the placing positions is aligned with the flaring mechanism, another placing position is aligned with the liquid injection mechanism. The flaring mechanism is used to flare all the batteries in the material disc synchronously. The liquid injection mechanism is used to inject liquid into all the batteries in the material disc synchronously. The operation pace can be accelerated and the efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of battery electrolyte filling technology, and specifically to a battery electrolyte filling 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 liquid injection devices have a slow operating cycle and low efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a battery electrolyte filling device that solves the problems of slow operation and low efficiency of electrolyte filling devices.

[0005] To achieve the objectives of this utility model, the following technical solution is provided:

[0006] This utility model provides a battery electrolyte filling device, comprising:

[0007] A conveying mechanism includes a first driving member and a disk. The first driving member is connected to the disk and is used to drive the disk to rotate. The disk has multiple placement positions, which are arranged in a circular array. Each placement position is used to place a material tray, and each material tray contains multiple batteries. Each battery includes a battery cell and an aluminum-plastic film covering the battery cell.

[0008] A flaring mechanism, located above the disc, is used to tear open the aluminum-plastic film to enclose the opening, and also to enlarge the opening;

[0009] An electrolyte injection mechanism is located above the disk and is used to inject electrolyte into the battery cell through the enlarged opening.

[0010] The flaring mechanism and the liquid injection mechanism are arranged circumferentially along the disk. The disk rotates to align the placement positions with the flaring mechanism and the liquid injection mechanism in sequence. When one of the placement positions is aligned with the flaring mechanism, the other placement position is aligned with the liquid injection mechanism. The flaring mechanism is used to flare all the batteries in the material tray simultaneously, and the liquid injection mechanism is used to inject liquid into all the batteries in the material tray simultaneously.

[0011] In one embodiment, the plurality of batteries in each material tray are arranged in M ​​rows and N columns, where M and N are both positive integers greater than 1; the flaring mechanism includes a plurality of flaring rods arranged in M ​​rows and N columns, and the liquid injection mechanism includes a plurality of liquid injection needles arranged in M ​​rows and N columns. The plurality of flaring rods are used to extend into the plurality of openings one by one to synchronously enlarge the plurality of openings, and the plurality of liquid injection needles are used to extend into the enlarged plurality of openings one by one to synchronously inject liquid into the plurality of battery cells.

[0012] In one embodiment, the flaring mechanism includes a first lifting component, a first film-pulling component, and a flaring component. The first lifting component is used to drive the first film-pulling component to rise and fall. The first film-pulling component is used to simultaneously pull open all the aluminum-plastic films of the battery to form a plurality of openings. The flaring component is used to rise and fall relative to the first film-pulling component to simultaneously enlarge the plurality of openings.

[0013] The liquid injection mechanism includes a second lifting component, a second film-pulling component, and a liquid injection component. The second lifting component is used to drive the second film-pulling component to move up and down. The second film-pulling component is used to simultaneously pull open all the aluminum-plastic films of the batteries to restore the enlarged multiple openings. The liquid injection component is used to move up and down relative to the second film-pulling component to simultaneously inject liquid into multiple battery cells.

[0014] In one embodiment, the flaring assembly includes a first lifting structure and a plurality of flaring rods. The first lifting structure is connected to the first lifting assembly, and the plurality of flaring rods are all connected to the first lifting structure. The first lifting structure is used to drive the plurality of flaring rods to rise and fall.

[0015] The injection assembly includes a second lifting structure and a plurality of injection needles. The second lifting structure is connected to the second lifting assembly. The plurality of 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 injection needles to rise and fall.

[0016] In one embodiment, the first lifting component and the second lifting component have the same structure, and / or the first film-pulling component and the second film-pulling component have the same structure, and / or the first lifting structure and the second lifting structure have the same structure.

[0017] In one embodiment, the first 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. The end of the second guide rod away from the first lifting plate is connected and fixed to the first film stretching assembly. 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.

[0018] In one embodiment, the first film-pulling assembly includes a support plate, a third driving member, a transmission structure, multiple clamping rods, and multiple suction cups. The support plate is fixedly connected to the end of the second guide rod away from the first lifting plate. The third driving member is mounted on the support plate and connected to the transmission structure. The transmission structure is slidably connected to the support plate and fixedly connected 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 third driving member drives the multiple clamping rods to move through the transmission structure, so that adjacent clamping rods move closer to or further away from each other. The multiple suction cups are used to adsorb multiple aluminum-plastic films.

[0019] 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, the first slide rail extending 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 third 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.

[0020] 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 third 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 third driving member drives the mating part to slide the cam plate along the second slide rail, and the cam plate drives multiple sliding members to slide along the first slide rail, with adjacent sliding members either approaching or moving away from each other.

[0021] In one embodiment, the first lifting structure includes a fourth driving member and a second lifting plate. The fourth 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 the flared rods are connected to the second lifting plate and extend away from the first lifting plate.

[0022] This utility model discloses a battery liquid injection device. It sets up multiple placement positions arranged in a ring array on a disc, and sets up a flaring mechanism and a liquid injection mechanism arranged at intervals along the circumference of the disc. The disc rotates to drive the placement positions to align with the flaring mechanism and the liquid injection mechanism in sequence. When one placement position is aligned with the flaring mechanism, the other placement position is aligned with the liquid injection mechanism. Multiple batteries in the material trays of the multiple placement positions are synchronously flared and injected with liquid in sequence. Moreover, the flaring mechanism and the liquid injection mechanism can operate synchronously, which can speed up the operation cycle and improve efficiency. Attached Figure Description

[0023] 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.

[0024] Figure 1 A perspective view of a battery electrolyte filling device according to one embodiment;

[0025] Figure 2 This is a perspective view of a flaring mechanism according to one embodiment;

[0026] Figure 3 This is a perspective view of a first film stretching assembly according to one embodiment;

[0027] Figure 4 This is a schematic diagram of the first film-tearing assembly tearing open the aluminum-plastic film according to one embodiment.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100 - Battery electrolyte filling device;

[0030] 10-Conveying mechanism, 11-First driving component, 12-Disc, 13-Material tray, 14-Battery, 141-Battery cell, 142-Aluminum-plastic film, 143-Opening;

[0031] 20-flaring mechanism, 21-first lifting assembly, 211-fixed plate, 212-first guide rod, 213-first lifting plate, 214-second guide rod, 215-second driving component, 216-bulb, 22-first film stretching assembly, 221-support plate, 222-third driving component, 223-transmission structure, 224-clamping rod, 225-suction cup, 226-hollowed-out area, 227-adjustment hole, 228-air extraction channel, 229-adsorption channel, 23-flaring assembly, 231-first lifting structure, 232-flaring rod, 24-support base;

[0032] 30-Injection mechanism, 31-Second lifting assembly, 32-Second membrane stretching assembly, 33-Injection assembly, 331-Second lifting structure, 332-Injection needle;

[0033] 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;

[0034] 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;

[0035] 60 - Fourth driving component, 61 - Second lifting plate. Detailed Implementation

[0036] 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.

[0037] It should be noted that when an institution is said to be "attached" to another institution, it can be directly attached to the other institution or may have an intermediary institution. When an institution is said to be "connected" to another institution, it can be directly connected to the other institution or may have an intermediary institution.

[0038] 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.

[0039] 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.

[0040] Please refer to Figure 1 This utility model provides a battery liquid injection device 100, including a conveying mechanism 10, a flaring mechanism 20, and an injection mechanism 30. The conveying mechanism 10 is used to convey a battery 14, the flaring mechanism 20 is used to flare the opening 143 of the aluminum-plastic film 142 of the battery 14, and the injection mechanism 30 is used to inject liquid into the battery 14.

[0041] For ease of explanation, let's first define directions. When the battery filling device 100 is installed and can perform the functions of flaring and filling, it has an upper and a lower orientation in the direction of gravity. The upper orientation is further away from the Earth's center, and the lower orientation is closer to the Earth's center. For example, if structure one is located below structure two, or structure two is located above structure one, it means that structure one is closer to the Earth's center than structure two.

[0042] Among them, rising and falling refers to moving up and down along the direction of gravity. Of course, the direction of rising and falling can also have a small angle with the direction of gravity.

[0043] The conveying mechanism 10 includes a first drive member 11 and a disk 12. The first drive member 11 is connected to the disk 12 and is used to drive the disk 12 to rotate. The disk 12 has multiple placement positions arranged in a circular array. Each placement position is used to place a material tray 13, and each material tray 13 contains multiple batteries 14. Each battery 14 includes a battery cell 141 and an aluminum-plastic film 142 covering the battery cell 141.

[0044] The first driving component 11 can be a motor, which can be directly connected to the disk 12, or it can be connected to the disk 12 via a reducer. The first driving component 11 is positioned below the disk 12. The disk 12 is a circular flat plate, with placement positions located near the edge of its upper surface. The number of placement positions can be 2, 3, 4, etc., arranged in a circular array, making them rotationally symmetrical about the rotation axis of the disk 12. The multiple placement positions divide the disk 12 into 360° sections, and when the disk 12 rotates by this division angle, the multiple placement positions can completely overlap. For example, Figure 1 The diagram shows five placement positions, evenly divided into 360° intervals, with adjacent positions spaced 72° apart. After the first drive unit 11 drives the disk 12 to rotate 72°, multiple placement positions coincide with their original positions before rotation. For any one of these placement positions, it means it has rotated 72° on the disk 12.

[0045] The structure of the material tray 13 is not limited, and it can be detachably connected to the disc 12. The material tray 13 can hold multiple batteries 14, and multiple material trays 13 are installed in a one-to-one correspondence with multiple placement positions. The holding angle and orientation of the multiple batteries 14 in the multiple material trays 13 are approximately rotationally symmetrical about the rotation axis of the disc 12. After the batteries 14 are placed in the material tray 13, the batteries 14 extend from the upper opening 143 of the material tray 13 so that the flaring mechanism 20 and the liquid injection mechanism 30 can operate on the batteries 14.

[0046] refer to Figure 1 and Figure 4 The flaring mechanism 20 is located above the disc 12 and is used to tear open the aluminum-plastic film 142 so that the aluminum-plastic film 142 surrounds the opening 143, and also to enlarge the opening 143.

[0047] The specific structure of the flaring mechanism 20 is not limited. When the conveying mechanism 10 conveys the material tray 13 and the multiple batteries 14 contained therein to the area directly below the flaring mechanism 20, it stops. The flaring mechanism 20 is used to flare all the batteries 14 in the material tray 13 simultaneously.

[0048] The electrolyte injection mechanism 30 is located above the disk 12 and is used to inject electrolyte into the cell 141 through the enlarged opening 143.

[0049] The specific structure of the liquid injection mechanism 30 is not limited. The conveying mechanism 10 stops when it conveys the material tray 13 and the multiple batteries 14 contained therein to the direct underside of the liquid injection mechanism 30. The liquid injection mechanism 30 is used to synchronously inject liquid into all the batteries 14 in the material tray 13.

[0050] The flaring mechanism 20 and the liquid injection mechanism 30 are arranged circumferentially along the disk 12. The disk 12 rotates to drive the placement positions to align with the flaring mechanism 20 and the liquid injection mechanism 30 in sequence. When one placement position is aligned with the flaring mechanism 20, the other placement position is aligned with the liquid injection mechanism 30.

[0051] Optionally, the circumferential spacing between the flaring mechanism 20 and the injection mechanism 30 on the disk 12 is equal to the circumferential spacing between two adjacent placement positions on the disk 12. For example,... Figure 1 Taking a device with five placement positions as an example, after the disc 12 rotates to align with one of the placement positions and the flaring mechanism 20, the disc 12 can then rotate 72° to align the same placement position with the liquid injection mechanism 30. In this way, after the battery 14 passes through the flaring mechanism 30, it immediately proceeds to the liquid injection mechanism 30 for liquid injection, which can speed up the operation cycle and improve efficiency.

[0052] Alternatively, the circumferential spacing between the flaring mechanism 20 and the liquid injection mechanism 30 along the disk 12 is equal to the circumferential spacing between two spaced-apart positions along the disk 12, and there may be one or more spaced-apart positions between the two spaced-apart positions.

[0053] When the material tray 13 and the multiple batteries 14 within it rotate on the disc 12, they are first flared at the flaring mechanism 20 before being injected with electrolyte at the injection mechanism 30. In this way, the aluminum-plastic film 142 of all batteries 14 is flared during injection, resulting in a large opening 143. This improves the success rate of electrolyte injection, reduces the possibility of electrolyte spilling onto the outside of the aluminum-plastic film 142, and increases the yield rate.

[0054] When multiple batteries 14 in one material tray 13 are being injected with liquid, multiple batteries 14 in another material tray 13 are simultaneously being flared. The material tray 13 that has been injected with liquid is moved to the next process, and the material tray 13 that has been flared is moved to the injection mechanism 30 for injection. In other words, the arrangement of multiple placement positions in a ring array can realize the synchronous operation of injection and flaring.

[0055] In this embodiment of the invention, multiple placement positions are arranged in a ring array on the disk 12, and a flaring mechanism 20 and a liquid injection mechanism 30 are arranged at intervals along the circumference of the disk 12. The disk 12 rotates to drive the placement positions to align with the flaring mechanism 20 and the liquid injection mechanism 30 in sequence. When one placement position is aligned with the flaring mechanism 20, the other placement position is aligned with the liquid injection mechanism 30. Multiple batteries 14 in the material trays 13 on the multiple placement positions are synchronously flared and injected with liquid in sequence. The flaring mechanism 20 and the liquid injection mechanism 30 can operate synchronously, which can speed up the operation cycle and improve efficiency.

[0056] In one embodiment, reference Figures 1 to 3In each material tray 13, multiple batteries 14 are arranged in M ​​rows and N columns, where M and N are both positive integers greater than 1. The flaring mechanism 20 includes multiple flaring rods 232 arranged in M ​​rows and N columns, and the liquid injection mechanism 30 includes multiple liquid injection needles 332 arranged in M ​​rows and N columns. The multiple flaring rods 232 are used to extend into the multiple openings 143 in a one-to-one correspondence to simultaneously enlarge the multiple openings 143, and the multiple liquid injection needles 332 are used to extend into the enlarged multiple openings 143 in a one-to-one correspondence to simultaneously inject liquid into the multiple battery cells 141.

[0057] The specific structure of the flaring rod 232 and the injection needle 332 is not limited. When the flaring mechanism 20 tears open the aluminum-plastic film 142, it forms a smaller opening 143. The flaring rod 232 then expands this smaller opening 143 and further expands the aluminum-plastic film 142, thus enlarging the opening 143. The enlarged opening 143 allows the injection needle 332 to be inserted more easily, preventing the injection needle 332 from piercing the aluminum-plastic film 142 and causing defects.

[0058] The arrangement of multiple batteries 14 in each material tray 13 corresponds to the arrangement of multiple flaring rods 232 and multiple injection needles 332. When the material tray 13 is aligned with the flaring mechanism 20, the multiple flaring rods 232 can simultaneously flare the multiple batteries 14 in the material tray 13. When the material tray 13 is aligned with the injection mechanism 30, the multiple injection needles 332 can also simultaneously inject liquid into the multiple batteries 14.

[0059] Multiple batteries 14, multiple flared rods 232, and multiple injection needles 332 are arranged in M ​​rows and N columns, where M and N are both positive integers greater than 1. This regular arrangement facilitates the orderly placement of the batteries 14 in the material tray 13, as well as the orderly arrangement of the flared rods 232 and injection needles 332, making full use of space, improving space utilization, and reducing the possibility of interference between structures. For example, refer to... Figure 1 M is 2 and N is 4. Of course, M and N can be other values, without restriction.

[0060] In one embodiment, reference Figure 1 and Figure 2 The flaring mechanism 20 includes a first lifting assembly 21, a first film-pulling assembly 22, and a flaring assembly 23. The first lifting assembly 21 is used to drive the first film-pulling assembly 22 to rise and fall, and the first film-pulling assembly 22 is used to simultaneously pull open the aluminum-plastic film 142 of all batteries 14 to form multiple openings 143. The flaring assembly 23 is used to rise and fall relative to the first film-pulling assembly 22 to simultaneously enlarge the multiple openings 143.

[0061] The specific structures of the first lifting assembly 21, the first film-pulling assembly 22, and the flaring assembly 23 are not limited. When the disc 12 rotates and moves the material tray 13 directly below the flaring mechanism 20, the first lifting assembly 21 drives the first film-pulling assembly 22 to descend. The first film-pulling assembly 22 simultaneously pulls film from the multiple batteries 14 in the material tray 13 to form smaller openings 143. Then, the flaring assembly 23 descends, and multiple flaring rods 232 simultaneously enlarge the multiple openings 143. After flaring is completed, the flaring assembly 23 rises, causing the multiple flaring rods 232 to exit the openings 143 of the aluminum-plastic film 142 of the multiple batteries 14. The first film-pulling assembly 22 also rises after releasing the aluminum-plastic film 142 of the multiple batteries 14. Then, the disc 12 rotates again, moving the material tray 13 toward the liquid injection mechanism 30. The flaring assembly 23 and the first film-pulling assembly 22 can rise sequentially or simultaneously. After the flaring rod 232 flares out, the first film-pulling assembly 22 releases the aluminum-plastic film 142. Then, the first lifting assembly 21 drives the first film-pulling assembly 22 to rise. Since the flaring assembly 23 is connected to the first lifting assembly 21, it can follow and rise synchronously.

[0062] By setting the structure of the flaring mechanism 20 in this embodiment, the functions of tearing open the aluminum-plastic film 142 to form an opening 143 and expanding the opening 143 can be realized through the first lifting component 21, the first film-pulling component 22 and the flaring component 23. The structure is simple, the number of parts is small, the movement relationship is simple, and the space occupation is small.

[0063] In one embodiment, reference Figure 1 The liquid injection mechanism 30 includes a second lifting assembly 31, a second film-pulling assembly 32, and a liquid injection assembly 33. The second lifting assembly 31 is used to drive the second film-pulling assembly 32 to move up and down. The second film-pulling assembly 32 is used to simultaneously pull open the aluminum-plastic film 142 of all the batteries 14 to restore the enlarged multiple openings 143. The liquid injection assembly 33 is used to move up and down relative to the second film-pulling assembly 32 to simultaneously inject liquid into multiple battery cells 141.

[0064] The specific structures of the second lifting assembly 31, the second film-pulling assembly 32, and the liquid injection assembly 33 are not limited. When the disc 12 rotates and moves the material tray 13 directly below the liquid injection mechanism 30, the second lifting assembly 31 drives the second film-pulling assembly 32 to descend. The second film-pulling assembly 32 simultaneously pulls the film from the multiple batteries 14 in the material tray 13, restoring the opening 143 enlarged by the flaring mechanism 20. Then, the liquid injection assembly 33 descends, and multiple injection needles 332 simultaneously extend into the multiple enlarged openings 143 to inject liquid. After the liquid injection is completed, the liquid injection assembly 33 rises, causing the multiple injection needles 332 to exit the openings 143 of the aluminum-plastic film 142 of the multiple batteries 14. The second film-pulling assembly 32 also rises after releasing the aluminum-plastic film 142 of the multiple batteries 14. Then, the disc 12 rotates again, moving the material tray 13 to the next process. The liquid injection assembly 33 and the second film-pulling assembly 32 can rise sequentially or simultaneously. After the injection needle 332 injects liquid, the second film-pulling assembly 32 releases the aluminum-plastic film 142. Then, the second lifting assembly 31 drives the second film-pulling assembly 32 to rise. Since the injection assembly 33 is connected to the second lifting assembly 31, it can follow and rise synchronously.

[0065] By setting the structure of the liquid injection mechanism 30 in this embodiment, the functions of tearing open the aluminum-plastic film 142 to restore the enlarged opening 143 and injecting liquid can be realized through the second lifting component 31, the second film tearing component 32 and the liquid injection component 33. The structure is simple, the number of parts is small, the movement relationship is simple, and the space occupation is small.

[0066] Optional, see reference Figure 1 and Figure 2 The flaring assembly 23 includes a first lifting structure 231 and a plurality of flaring rods 232. The first lifting structure 231 is connected to the first lifting assembly 21, and the plurality of flaring rods 232 are all connected to the first lifting structure 231. The first lifting structure 231 is used to drive the plurality of flaring rods 232 to rise and fall.

[0067] The structure of the first lifting structure 231 is not limited. The first lifting structure 231 is connected to the first lifting assembly 21 and can drive multiple flaring rods 232 to rise and fall relative to the first lifting assembly 21. One end of the multiple flaring rods 232 is connected to the first lifting structure 231, and the other end is used to extend into the opening 143 of the aluminum-plastic film 142 and flare it. With such a structure for the flaring assembly 23, the structure is simple, the number of parts is small, the movement relationship is simple, and the space occupation is small.

[0068] Optional, see reference Figure 1 The injection assembly 33 includes a second lifting structure 331 and a plurality of injection needles 332. The second lifting structure 331 is connected to the second lifting assembly 31, and the plurality of injection needles 332 are spaced apart and all connected to the second lifting structure 331. The second lifting structure 331 is used to drive the plurality of injection needles 332 to rise and fall.

[0069] The structure of the second lifting structure 331 is not limited. The second lifting structure 331 is connected to the second lifting assembly 31 and can drive multiple injection rods to move up and down relative to the second lifting assembly 31. One end of the multiple injection needles 332 is connected to the second lifting structure 331, and the other end is used to extend into the opening 143 of the aluminum-plastic film 142 and inject liquid. With such a structure for the injection assembly 33, the structure is simple, the number of parts is small, the movement relationship is simple, and the space occupation is small.

[0070] Optional, see reference Figure 1 The first lifting assembly 21 and the second lifting assembly 31 have the same structure, and / or the first film-pulling assembly 22 and the second film-pulling assembly 32 have the same structure, and / or the first lifting structure 231 and the second lifting structure 331 have the same structure.

[0071] Using components with identical structures reduces design complexity, increases component versatility, and lowers costs. Understandably, in this embodiment, minor differences between components can be considered as representing the same structure.

[0072] The following text mainly describes the first lifting assembly 21, the first film stretching assembly 22, and the first lifting structure 231 in detail. The second lifting assembly 31, the second film stretching assembly 32, and the second lifting structure 331 can be referred to.

[0073] In one embodiment, reference Figures 1 to 3 The first lifting assembly 21 includes a fixed plate 211, a first guide rod 212, a first lifting plate 213, a second guide rod 214, and a second driving member 215. The first lifting plate 213 is spaced apart from the fixed plate 211 along the direction of gravity, and is located below the fixed plate 211. Both the first guide rod 212 and the second guide rod 214 extend along the direction of gravity. The first guide rod 212 is fixedly connected to the first lifting plate 213, and the fixed plate 211 is slidably connected to the first guide rod 212. The second guide rod 214 is fixedly connected to the first lifting plate 213 and extends in a direction away from the fixed plate 211. One end of the second guide rod 214 away from the first lifting plate 213 is fixedly connected to the first film-stretching assembly 22. The second driving member 215 is mounted on the fixed plate 211 and connected to the first lifting plate 213, and is used to drive the first lifting plate 213 to rise and fall.

[0074] Both the fixed plate 211 and the first lifting plate 213 are generally flat and roughly parallel to the support plate 221. The first guide rod 212 and the second guide rod 214 are both straight columnar rods, with their lengths roughly aligned with the direction of gravity. The fixed plate 211 is fixed and serves as the structural support foundation. The first guide rod 212 may be fitted with a bushing 216 and connected to the fixed plate 211 through the bushing 216. The bushing 216 can slide relative to the first guide rod 212. There can be multiple first guide rods 212 and second guide rods 214. For example, such as... Figure 1 and Figure 2 As shown, there are four of each of the first guide rod 212 and the second guide rod 214, and they are evenly distributed. This provides stable guidance and limiting, ensuring that the first lifting plate 213 can only move up and down and cannot move in other directions.

[0075] The second driving component 215 can be a motor, cylinder, etc. The second driving component 215 is mounted on the upper surface of the fixed plate 211 and drives the first lifting plate 213 to rise and fall. Compared to mounting the second driving component 215 on the lower surface of the fixed plate 211, mounting it on the upper surface reduces the space occupied between the fixed plate 211 and the first lifting plate 213, allowing the first lifting plate 213 to move as close to the fixed plate 211 as possible during lifting and falling, resulting in a more compact structure. If the second driving component 215 is a motor, it can be connected to the first lifting plate 213 and driven through a transmission method such as a ball screw; if the second driving component 215 is a cylinder, the cylinder's extension rod is connected to the first lifting plate 213, and the drive is achieved through the extension and retraction of the cylinder's extension rod.

[0076] Optionally, the flaring mechanism 20 also includes a support base 24, which can be installed on the ground or other support platform. The fixing plate 211 is fixedly installed on the top of the support base 24, and the entire film-pulling assembly can be positioned on one side of the support base 24. The height of the support base 24 can be reasonably set so that when the first lifting assembly 21 drives the first film-pulling assembly 22 to rise and fall, the first film-pulling assembly 22 will not contact the ground or other support platform, thus avoiding structural interference.

[0077] In one embodiment, reference Figure 2 and Figure 3The first film-pulling assembly 22 includes a support plate 221, a third driving member 222, a transmission structure 223, multiple clamping rods 224, and multiple suction cups 225. The support plate 221 is fixedly connected to the end of the second guide rod 214 away from the first lifting plate 213. The third driving member 222 is mounted on the support plate 221 and connected to the transmission structure 223. The transmission structure 223 is slidably connected to the support plate 221 and fixedly connected to the multiple clamping rods 224. The multiple clamping rods 224 are located below the support plate 221 and arranged sequentially at intervals. Multiple suction cups 225 are provided on the opposite surfaces of each pair of adjacent clamping rods 224. The third driving member 222 drives the multiple clamping rods 224 to move through the transmission structure 223, so that adjacent pairs of clamping rods 224 move closer or further apart. The multiple suction cups 225 are used to adsorb multiple aluminum-plastic films 142.

[0078] The specific structures of the third driving component 222 and the transmission structure 223 are not limited, as long as the third driving component 222 can drive multiple clamping rods 224 to move through the transmission structure 223. For example, the third driving component 222 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 223 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 third driving component 222 as a power source, in conjunction with the transmission structure 223, multiple clamping rods 224 can be driven to move, saving on the number of power sources and reducing costs.

[0079] The clamping rod 224 can be a straight rod extending horizontally. Multiple clamping rods 224 can have identical structures and be arranged parallel to each other. Two adjacent clamping rods 224 form a set of clamping structures. The number of clamping rods 224 is even, and they can form one or more sets of clamping structures. For example, such as... Figure 3 As shown, there are four clamping rods 224. The first and second rods along the arrangement direction form the first set of clamping structures, and the third and fourth rods form the second set of clamping structures.

[0080] Each clamping structure has multiple suction cups 225 on its opposite surfaces of the two clamping rods 224. The suction cups 225 are arranged in pairs; that is, if one clamping rod 224 has a suction cup 225, the opposite position on the other clamping rod 224 in the same clamping structure is also provided with a suction cup 225. The suction cups 225 on the two clamping rods 224 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 225, and each clamping rod 224 is equipped with 8 suction cups 225. The 8 suction cups 225 on the two clamping rods 224 are directly opposite each other.

[0081] Optionally, the multiple suction cups 225 on each clamping rod 224 form multiple groups, each group having multiple suction cups 225, and each group of suction cups 225 is used to adhere the aluminum-plastic film 142 of the same battery 14. For example, Figure 3 As shown, the eight suction cups 225 on each clamping rod 224 form four groups, with each group having two adjacent suction cups 225. In this way, a clamping structure can use 16 suction cups 225 to adsorb the aluminum-plastic film 142 of four batteries 14, enabling batch film pulling.

[0082] The suction cup 225 can be adsorbed onto the aluminum-plastic film 142 by vacuuming. It can be connected to the suction cup 225 via an external pipe, or vacuuming can be achieved by providing a channel inside the clamping rod 224 that communicates with the suction cup 225. For example,... Figure 3 and Figure 4 As shown, the clamping rod 224 has an internal air extraction channel 228, and the suction cup 225 has an adsorption channel 229. The air extraction channel 228 and the adsorption channel 229 are connected. An external vacuum device (not shown) can be connected to the air extraction channel 228 through a pipe to evacuate the adsorption channel 229, so that the suction cup 225 adsorbs the aluminum-plastic film 142.

[0083] Combination Figures 1 to 4 The working process of the first film-pulling assembly 22 in this embodiment is as follows: the disc 12 drives the material disc 13 to rotate directly below the flaring mechanism 20; the first lifting assembly 21 drives the support plate 221 to descend; the third driving member 222 drives the two clamping rods 224 of each clamping structure to move closer together through the transmission structure 223, so that multiple suction cups 225 contact the aluminum-plastic film 142 of multiple batteries 14; the suction cups 225 draw a vacuum to adsorb the aluminum-plastic film 142; the third driving member 222 then drives the two clamping rods 224 of each clamping structure to move away from each other through the transmission structure 223, so that the suction cups 225 pull the aluminum-plastic film 142 and cause the aluminum-plastic film 142 to open and enclose an opening 143. Flaring can then be performed by the flaring assembly 23. After the flaring operation is completed, the suction cups 225 are devastated, the suction cups 225 separate from the aluminum-plastic film 142, and the first lifting assembly 21 drives the first film-pulling assembly 22 to rise back to the initial position.

[0084] By setting a third driving component 222 to drive the transmission structure 223, multiple clamping rods 224 are moved. Adjacent clamping rods 224 move closer or further apart. Multiple suction cups 225 on the clamping rods 224 can adsorb and peel the aluminum-plastic film 142 of multiple batteries 14, thereby realizing batch film peeling operations on multiple batteries 14, which can improve efficiency. In addition, a single third driving component 222 can realize batch film peeling operations, reducing the number of power sources and lowering costs.

[0085] In one embodiment, reference Figure 2 and Figure 3 The transmission structure 223 includes a transmission mating component 40 and multiple sliding components 50. A first slide rail 54 is provided on the support plate 221, extending along the arrangement direction of the multiple clamping rods 224. The transmission mating component 40 is connected to the first driving component 11 and simultaneously to the multiple sliding components 50, with each sliding component 50 corresponding to one of the multiple clamping rods 224. A third driving component 222 drives the transmission mating component 40 to move the multiple sliding components 50 along the first slide rail 54, with adjacent sliding components 50 either moving closer to or further away from each other.

[0086] The support plate 221 can be roughly flat. The support plate 221 can have several hollow areas 226 that penetrate its upper and lower surfaces. The upper surface of the support plate 221 is connected and fixed to the first lifting component 21. The first slide rail 54 is set on the upper surface of the support plate 221. The sliding member 50 passes through the hollow area 226 of the support plate 221 and is connected and fixed to the clamping rod 224 below the support plate 221.

[0087] Optionally, two first slide rails 54 may be provided on the support plate 221. The two first slide rails 54 are spaced apart along the length of the clamping rod 224, and both first slide rails 54 extend along the arrangement direction of the plurality of clamping rods 224. 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 221 may be one, three or more, without limitation. The extension direction of the clamping rod 224 is its length direction, the extension direction of the first slide rail 54 is also its length direction, and the arrangement direction of the plurality of clamping rods 224 is perpendicular to the extension direction of the clamping rod 224.

[0088] 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 224; 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 226 of the support plate 221, 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 224.

[0089] Optionally, the clamping rod 224 may have an adjustment hole 227, the length direction of which is the same as that of the clamping rod 224. The second connecting arm 53 has a corresponding connecting hole 57. The second connecting arm 53 and the clamping rod 224 can be connected by screws or bolts passing through the adjustment hole 227 and the connecting hole 57 and locking them. When the screws or bolts are not tightened, they can move along the length direction of the adjustment hole 227, thus facilitating the adjustment of the relative position of the clamping rod 224 and the sliding member 50, so as to accurately align the suction cup 225 on the clamping rod 224 with the battery 14.

[0090] 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.

[0091] 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.

[0092] The first slide rail 54 extends along the arrangement direction of the multiple clamping rods 224, 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 224 connected to the sliding member 50, ensuring the stability and reliability of the movement. This allows the multiple suction cups 225 on the clamping rod 224 to stably adsorb and pull the film.

[0093] 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 221. The second slide rail 56 extends along the length direction of the clamping rod 224. The mating part 41 is connected to the third driving component 222 and the cam plate 42. The cam plate 42 is slidably connected to the second slide rail 56.

[0094] The second slide rail 56 can be disposed on the upper surface of the support plate 221. 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 3As shown, there are two second slide rails 56, which are spaced apart along the arrangement direction of the multiple clamping rods 224. 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.

[0095] 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 third driving member 222 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 224. The third driving member 222 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.

[0096] The cam plate 42 has multiple sliding grooves 421 arranged sequentially along the arrangement direction of the multiple clamping rods 224. 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. The length direction of each sliding groove 421 forms an angle with the length direction of the clamping rods 224 and the arrangement direction of the multiple clamping rods 224. Adjacent sliding grooves 421 have an axisymmetric structure, and the axis of symmetry extends along the length direction of the clamping rods 224. Multiple sliding members 50 are slidably connected to the multiple sliding grooves 421 one-to-one. The third driving member 222 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 adjacent sliding members 50 are either close to or far from each other.

[0097] 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 224, and the third plate 424 also has two slide grooves 421 corresponding to another set of clamping rods 224. The second plate 423 and the third plate 424 can be symmetrical with respect to the first plate 422.

[0098] The aforementioned groove 421 is configured such that the two grooves 421 corresponding to a set of clamping rods 224 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 rods 224 connected thereto can only slide along the arrangement direction of the multiple clamping rods 224. 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 224. 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 3 As shown, when the third driving member 222 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 224 of the clamping structure to move away from each other. When the third driving member 222 drives the gear 411 to rotate counterclockwise, the process described above will be similar, causing the two sliding members 50 to move closer together, thereby causing the two clamping rods 224 of the clamping structure to move closer together.

[0099] 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 224 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 third driving member 222 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.

[0100] By setting multiple sliding grooves 421 on the cam plate 42, a third driving member 222 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 224 connected to the sliding members 50 to slide along the first slide rail 54, and realizing that two adjacent clamping rods 224 move closer or further away from each other, thereby realizing the functions of adsorbing aluminum-plastic film 142 and pulling aluminum-plastic film 142. The structure is simple, the cost is low, and it can realize the synchronous film pulling of multiple batteries 14.

[0101] Optional, see reference Figure 3A 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.

[0102] In one embodiment, reference Figure 2 The first lifting structure 231 includes a fourth driving member 60 and a second lifting plate 61. The fourth driving member 60 is installed on the first lifting plate 213 and connected to the second lifting plate 61. The second lifting plate 61 is slidably connected to the second guide rod 214. A plurality of flared rods 232 are connected to the second lifting plate 61 and extend away from the first lifting plate 213.

[0103] The second lifting plate 61 is generally flat and roughly parallel to the first lifting plate 213. The second guide rod 214 may also be fitted with a bushing 216 and connected to the second lifting plate 61 through the bushing 216. The bushing 216 and the second guide rod 214 can slide relative to each other. The fourth driving component 60 may be a motor, cylinder, etc. In the embodiment where the fourth driving component 60 is a motor, the fourth driving component 60 can be connected to the second lifting plate 61 through a ball screw or other mating pair; in the embodiment where the fourth driving component 60 is a cylinder, the telescopic rod of the fourth driving component 60 is connected to the second lifting plate 61. The fourth driving component 60 can drive the second lifting plate 61 to slide along the second guide rod 214 to achieve lifting. This design structure is simple and makes full use of the existing structure of the first lifting assembly 21 for installation, resulting in low cost.

[0104] The battery filling device 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.

[0105] 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 of the 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.

[0106] 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 electrolyte filling device (100), characterized in that, include: The conveying mechanism (10) includes a first driving member (11) and a disk (12). The first driving member (11) is connected to the disk (12) and is used to drive the disk (12) to rotate. The disk (12) has multiple placement positions, which are arranged in a circular array. Each placement position is used to place a material tray (13). Each material tray (13) contains multiple batteries (14). Each battery (14) includes a cell (141) and an aluminum-plastic film (142) covering the cell (141). A flaring mechanism (20) is disposed above the disc (12) and is used to tear open the aluminum-plastic film (142) so that the aluminum-plastic film (142) surrounds the opening (143), and is also used to enlarge the opening (143); An electrolyte injection mechanism (30) is disposed above the disk (12) for injecting electrolyte into the battery cell (141) through the enlarged opening (143); The flaring mechanism (20) and the liquid injection mechanism (30) are arranged circumferentially around the disk (12). The disk (12) rotates to drive the placement positions to align with the flaring mechanism (20) and the liquid injection mechanism (30) in sequence. When one of the placement positions is aligned with the flaring mechanism (20), the other placement position is aligned with the liquid injection mechanism (30). The flaring mechanism (20) is used to flare all the batteries (14) in the material tray (13) simultaneously, and the liquid injection mechanism (30) is used to inject liquid into all the batteries (14) in the material tray (13) simultaneously.

2. The battery electrolyte filling device (100) according to claim 1, characterized in that, The multiple batteries (14) in each of the material trays (13) are arranged in M ​​rows and N columns, where M and N are both positive integers greater than 1; the flaring mechanism (20) includes multiple flaring rods (232) arranged in M ​​rows and N columns, and the liquid injection mechanism (30) includes multiple liquid injection needles (332) arranged in M ​​rows and N columns. The multiple flaring rods (232) are used to extend into the multiple openings (143) one by one to synchronously enlarge the multiple openings (143), and the multiple liquid injection needles (332) are used to extend into the enlarged multiple openings (143) one by one to synchronously inject liquid into the multiple cells (141).

3. The battery electrolyte filling device (100) according to claim 2, characterized in that, The flaring mechanism (20) includes a first lifting component (21), a first film-pulling component (22), and a flaring component (23). The first lifting component (21) is used to drive the first film-pulling component (22) to lift and lower. The first film-pulling component (22) is used to simultaneously pull open all the aluminum-plastic film (142) of the battery (14) to form a plurality of openings (143). The flaring component (23) is used to lift and lower relative to the first film-pulling component (22) to simultaneously enlarge the plurality of openings (143). The liquid injection mechanism (30) includes a second lifting assembly (31), a second film-pulling assembly (32), and a liquid injection assembly (33). The second lifting assembly (31) is used to drive the second film-pulling assembly (32) to lift and lower. The second film-pulling assembly (32) is used to simultaneously pull open the aluminum-plastic film (142) of all the batteries (14) to restore the enlarged multiple openings (143). The liquid injection assembly (33) is used to lift and lower relative to the second film-pulling assembly (32) to simultaneously inject liquid into multiple battery cells (141).

4. The battery electrolyte filling device (100) according to claim 3, characterized in that, The flaring assembly (23) includes a first lifting structure (231) and a plurality of flaring rods (232). The first lifting structure (231) is connected to the first lifting assembly (21), and the plurality of flaring rods (232) are all connected to the first lifting structure (231). The first lifting structure (231) is used to drive the plurality of flaring rods (232) to rise and fall. The injection assembly (33) includes a second lifting structure (331) and a plurality of injection needles (332). The second lifting structure (331) is connected to the second lifting assembly (31). The plurality of injection needles (332) are spaced apart and are all connected to the second lifting structure (331). The second lifting structure (331) is used to drive the plurality of injection needles (332) to rise and fall.

5. The battery electrolyte filling device (100) according to claim 4, characterized in that, The first lifting assembly (21) and the second lifting assembly (31) have the same structure, and / or the first film-pulling assembly (22) and the second film-pulling assembly (32) have the same structure, and / or the first lifting structure (231) and the second lifting structure (331) have the same structure.

6. The battery electrolyte filling device (100) according to claim 4, characterized in that, The first lifting assembly (21) includes a fixed plate (211), a first guide rod (212), a first lifting plate (213), a second guide rod (214), and a second driving member (215). The first lifting plate (213) and the fixed plate (211) are spaced apart relative to each other along the direction of gravity, and the first lifting plate (213) is located below the fixed plate (211). The first guide rod (212) and the second guide rod (214) both extend along the direction of gravity. The first guide rod (212) and the first lifting plate (213) are positioned relative to each other. The connection is fixed, the fixed plate (211) is slidably connected to the first guide rod (212), the second guide rod (214) is connected and fixed to the first lifting plate (213) and extends in the direction away from the fixed plate (211), the end of the second guide rod (214) away from the first lifting plate (213) is connected and fixed to the first film stretching assembly (22), and the second driving member (215) is installed on the fixed plate (211) and connected to the first lifting plate (213) for driving the first lifting plate (213) to rise and fall.

7. The battery electrolyte filling device (100) according to claim 6, characterized in that, The first film-pulling assembly (22) includes a support plate (221), a third driving member (222), a transmission structure (223), multiple clamping rods (224), and multiple suction cups (225). The support plate (221) is connected and fixed to the end of the second guide rod (214) away from the first lifting plate (213). The third driving member (222) is mounted on the support plate (221) and connected to the transmission structure (223). The transmission structure (223) is slidably connected to the support plate (221) and to the multiple clamping rods (225). The clamping rods (224) are connected and fixed. Multiple clamping rods (224) are arranged below the support plate (221) and spaced apart in sequence. Multiple suction cups (225) are provided on the opposite surfaces of two adjacent clamping rods (224). The third driving member (222) drives multiple clamping rods (224) to move through the transmission structure (223) so that two adjacent clamping rods (224) move closer to each other or further away from each other. Multiple suction cups (225) are used to adsorb multiple aluminum-plastic films (142).

8. The battery electrolyte filling device (100) according to claim 7, characterized in that, The transmission structure (223) includes a transmission coupling component (40) and a plurality of sliding components (50). The support plate (221) is provided with a first slide rail (54), which extends along the arrangement direction of the plurality of clamping rods (224). The transmission coupling component (40) is connected to the first driving component (11) and simultaneously connected to the plurality of sliding components (50). The plurality of sliding components (50) are connected to the plurality of clamping rods (224) one by one. The third driving component (222) drives the transmission coupling component (40) to move the plurality of sliding components (50) along the first slide rail (54), and two adjacent sliding components (50) are close to or far from each other.

9. The battery electrolyte filling device (100) according to claim 8, 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 (221), extending along the length direction of the clamping rod (224). The mating part (41) is connected to the third driving member (222) and the cam plate (42). The cam plate (42) is slidably connected to the second slide rail (56). The cam plate (42) has multiple sliding grooves (421) arranged sequentially along the arrangement direction of the clamping rods (224). The length direction of each sliding groove (421) is parallel to the length direction of the clamping rod (224). The length direction and the arrangement direction of the multiple clamping rods (224) are both angled. The two adjacent slide grooves (421) are axially symmetrical, and the axis of symmetry extends along the length direction of the clamping rods (224). The multiple sliding members (50) are slidably connected to the multiple slide grooves (421) one by one. The third driving member (222) 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.

10. The battery electrolyte filling device (100) according to claim 6, characterized in that, The first lifting structure (231) includes a fourth driving member (60) and a second lifting plate (61). The fourth driving member (60) is installed on the first lifting plate (213) and connected to the second lifting plate (61). The second lifting plate (61) is slidably connected to the second guide rod (214). A plurality of the flared rods (232) are connected to the second lifting plate (61) and extend away from the first lifting plate (213).

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