JP2024162703A - Single-unit large-capacity solid polymer lithium-ion battery injection machine - Google Patents

Abstract

To provide a single-unit large-capacity solid polymer lithium-ion battery injection machine that has a compact structure, is equipped with multiple stations in one machine, and can perform feeding, injection, standing and packaging operations in a vacuum environment, thereby shortening an electrolyte soaking time and improving production efficiency.SOLUTION: A single-unit large-capacity solid polymer lithium-ion battery injection machine 100 includes a frame 1, a moving mechanism 2, a module base 3, three modules 4 arranged along a first predetermined direction, and an injection assembly, a stilling assembly and a packaging assembly which cooperate one-to-one with each of the three modules 4, and each of the modules 4 is slidably connected to the frame 1 via a lifting mechanism 9, the lifting mechanism 9 is movable to reciprocate the module 4 along the second predetermined direction, and the moving mechanism 2 is drivable to reciprocate the module base 3 along the first predetermined direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to the technical field of liquid injection machines, and more specifically to liquid injection machines for single-unit large-capacity solid polymer lithium-ion batteries.

In the research, development and production of lithium-ion batteries, one of the methods for improving the capacity of a battery is to improve the energy density of the battery. In order to improve the energy density, it is necessary to increase the load of the plate by improving the compression density of the active material of the plate. However, as the compression density increases, the porosity of the plate decreases, which makes it difficult for the electrolyte to sufficiently infiltrate the plate. In addition, the cells inside the lithium-ion battery have a layered structure and are relatively dense. If a normal electrolyte injection method is used, air is likely to remain in the middle layer of the cell after injection, so the electrolyte cannot quickly penetrate the cell. If the electrolyte cannot sufficiently infiltrate the plate, problems such as blackening and lithium precipitation will occur on the anode after the battery is formed.

In the current lithium-ion battery production process, to solve the problem of slow electrolyte penetration, the batteries generally need to be left to stand for 24 hours or even longer after injection to ensure sufficient electrolyte absorption, which reduces production efficiency.

The present invention aims to provide a single-unit, large-capacity solid polymer lithium-ion battery injection machine that is compact in structure, has multiple stations in one machine, and can perform feeding, injection, standing, and packaging operations in a vacuum environment, shortening the electrolyte soaking time and improving production efficiency, thereby improving the above problems.

The present invention includes a frame, a moving mechanism attached to the frame, a module base on which a vacuum assembly is provided and which is operably connected to the moving mechanism and on which a battery is placed, three modules arranged at intervals along a first predetermined direction, and a liquid injection assembly, a static assembly, and a packaging assembly which cooperate one-to-one with each of the three modules, each of which is slidably connected to the frame via a lifting mechanism, and the lifting mechanism is movable to move the corresponding module back and forth along a second predetermined direction relative to the frame in order to couple the module and the module base, and the moving mechanism is drivable to move the module base back and forth along the first predetermined direction in order for the module base to selectively correspond to one of the three modules, and the module base When the module base moves to face a module that cooperates with the liquid injection assembly, the lifting mechanism corresponding to the module can be driven to move until the module is coupled to the module base to form a sealed space in order to inject liquid into the battery in the module base, and when the module base moves to face a module that cooperates with the stationary assembly, the lifting mechanism corresponding to the module can be driven to move until the module is coupled to the module base to form a sealed space in order to permeate the battery in the module base with electrolyte, and when the module base moves to face a module that cooperates with the packaging assembly, the lifting mechanism corresponding to the module can be driven to move until the module is coupled to the module base to form a sealed space in order to package the battery in the module base.

According to the embodiment of the single-unit large-capacity solid polymer lithium ion battery injection machine of the present invention, by providing three modules with different functions on a frame, the module base can selectively cooperate with each of the three modules, and this single-unit large-capacity solid polymer lithium ion battery injection machine has a compact structure and small volume, and can complete multiple processes on the same frame. The vacuum assembly enables injection, standing and packaging operations in a vacuum environment, shortening the time required for sufficient electrolyte penetration and improving production efficiency.

In addition, the single-unit large-capacity solid polymer lithium-ion battery injection device according to the embodiment of the present invention further has the following additional technical features:

The frame is provided with a feed station, an injection station, a standing station and a packaging station which are sequentially arranged along the first predetermined direction, the injection assembly is located at the injection station, the standing assembly is located at the standing station, the packaging assembly is located at the packaging station, and in an initial state, the module base is located at the feed station. By providing the feed station, injection station, standing station and packaging station, feeding, injection, standing and packaging of the battery can be respectively realized, the structural space of the frame can be utilized rationally, and production efficiency can be easily improved.

The module base includes a module base housing and a first transmission member attached to the module base housing, the first transmission member is operably connected to the moving mechanism, the module base housing is slidably connected to the frame, the moving mechanism is operable to move the first transmission member relative to the frame along a first predetermined direction when activated, the module base housing has a first storage cavity with one end open for placing a battery, the open end of the first storage cavity is located at an end of the module base housing closer to the module in the second predetermined direction, the vacuum assembly is in communication with the first storage cavity, when the module base is coupled to one of the three modules, the module forms a sealed space with the module, and the vacuum assembly draws a vacuum into the sealed space.

In the above method, the first transmission member moves the module base housing along a first predetermined direction by the power of the moving mechanism, so that the opening of the module base housing faces the module, the battery is located in the first storage cavity of the module base housing, and when the lifting mechanism drives the module to be coupled with the module base, the first storage cavity is sealed by the module, and the module base and the module form a sealed space, and the vacuum assembly can evacuate the sealed space so that injection, standing, or packaging can be performed in a vacuum environment.

The moving mechanism includes a driving member and a second transmission member, the driving member is attached to the frame, the second transmission member is operably connected to the output end of the driving member, the second transmission member is operably connected to the first transmission member, the frame is provided with a first slide member extending along the first predetermined direction, the outer surface of the module board housing is provided with a second slide member for matching with the first slide member, the module board housing and the frame are slidably connected via the second slide member and the first slide member, the driving member is drivable to rotate the second transmission member relative to the frame when actuated, and the rotation of the second transmission member moves the first transmission member relative to the frame along the first predetermined direction so that the module board housing moves along the first predetermined direction relative to the frame.

In the above method, the second transmission member and the first transmission member cooperate to transmit the power of the drive member to the first transmission member, and at the same time, the frame and the module base housing are provided with a first slide member and a second slide member, respectively, and the drive member can be driven by the power output of the drive member to move the first transmission member relative to the frame so that the module base housing moves along a first predetermined direction relative to the frame, and the module base housing moves stably relative to the frame.

The driving member is a driving motor, the first transmission member is a screw seat, the second transmission member is a threaded rod, the screw seat engages with the threaded rod by fitting the exterior of the threaded rod, one end of the threaded rod is connected to the output end of the driving motor in a transmission manner and the other end is connected to the frame in a rotatable manner, the first sliding member is a slide rail, the second sliding member is a slider, and the slider and the slide rail are slidably connected.

In the above embodiment, the cooperation between the screw rod and the screw seat makes it easy to convert the rotation of the drive motor into linear motion of the screw seat, thereby enabling the module base to move along a first predetermined direction, and the cooperation between the slider and the ride rail makes the module base move more flexibly, improving operating efficiency.

Each of the modules includes a module housing and a guide assembly attached to the module housing, the module housing having a second storage cavity with one open end, the open end of the second storage cavity being located at an end of the module housing close to the module base in the second predetermined direction, the guide assembly extending along the second predetermined direction and slidably connected to the frame, the guide assembly guiding the module as it moves along the second predetermined direction, the lifting mechanism attached to the frame, the protruding end of the lifting mechanism detachably connected to the module housing, when the module base is coupled to one of the three modules, the first storage cavity communicates with the second storage cavity, and the module base and the module surround each other to form the sealed space.

In the above embodiment, the module housing has an open second housing cavity, and when the module and the module base are coupled, the first housing cavity and the second housing cavity are sealed from each other to form a sealed space, making it easy to perform injection, placement, or packaging operations within this sealed space. By providing a guide assembly, the module can be moved accurately and coupled to the module base easily, ensuring matching and sealing between the module and the module base.

The module corresponding to the liquid injection assembly is a liquid injection module, and the liquid injection assembly includes a liquid injection cylinder, a liquid injection head connection seat, and a liquid injection head attached to the liquid injection head connection seat. The liquid injection cylinder is provided along the second predetermined direction, is connected to the module housing of the liquid injection module, and is located outside the second housing cavity of the liquid injection module. The protruding end of the liquid injection cylinder extends into the second housing cavity. The liquid injection head connection seat and the liquid injection head are located within the second housing cavity. The liquid injection head connection seat is detachably connected to the protruding end of the liquid injection cylinder. The liquid injection head extends along the second predetermined direction. The liquid inlet end of the liquid injection head is used to connect to a liquid injection pump. The liquid delivery end of the liquid injection head is used to inject liquid into the battery. The protruding end of the liquid injection cylinder is drivable to reciprocate the liquid injection head along the second predetermined direction.

In the above configuration, the injection cylinder drives the injection head so that it comes into contact with the battery, allowing the injection head to move flexibly, making it easy to perform injection operations for different batteries.

The liquid injection assembly further includes two suction cylinders, the two suction cylinders being provided on two opposing housing walls of the module housing of the liquid injection module, the protruding ends of the suction cylinders being located within the second housing cavity of the liquid injection module, and a vacuum suction cup being connected to the protruding ends of the suction cylinders, the vacuum suction cups being adsorbed to the aluminum plastic films of the battery and pulling apart the corresponding aluminum plastic films so as to form an opening between the two aluminum plastic films through which the liquid injection head can be inserted.

In the above configuration, two vacuum suction cups are installed opposite each other and act on the aluminum plastic film of the battery, and the movement of the suction cup cylinder pulls the aluminum plastic film of the battery apart to form an injection opening, making it easy for the injection head to inject electrolyte into the inside of the battery.

The module corresponding to the stationary assembly is a stationary module, and the stationary assembly includes a nitrogen filling mechanism attached to the module housing of the stationary module, and the nitrogen filling mechanism communicates with a second storage cavity of the stationary module and fills nitrogen gas into the second storage cavity.

In the above configuration, the nitrogen gas sent in through the charging nitrogen mechanism changes the pressure inside the sealed space, accelerating the penetration of the electrolyte into the battery and improving the efficiency of the battery's static state.

The module corresponding to the packaging assembly is a packaging module, and the packaging assembly includes two packaging cylinders, which are attached to two opposing housing walls of a module housing of the packaging module, the protruding ends of the packaging cylinders are located within a second accommodating cavity of the packaging module, and a head with a heating component is connected to the protruding end of the packaging cylinder, and the packaging cylinder is operable to move one of the corresponding heads toward the other head so that the two heads jointly act on the two aluminum plastic films of the battery to press and melt the two aluminum plastic films.

In the above configuration, the packaging cylinder moves the head with the heating element until it presses against the aluminum plastic film, making it easier to package the battery and improving the efficiency of battery packaging.

Additional aspects and advantages of the invention will be set forth in part in the description that follows, and in part will be obvious from the description that follows, or may be learned by practicing the invention.

The present invention has a compact structure, is equipped with multiple stations in one unit, and can perform feeding, injection, standing and packaging operations in a vacuum environment, shortening the electrolyte soaking time and improving production efficiency.

In order to more clearly describe the technical solutions of the embodiments of the present invention, the following briefly describes the necessary drawings used in the embodiments. The following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limitations on the scope of the present invention, and it should be understood that those skilled in the art can obtain other related drawings based on these drawings without creative efforts.
1 is a schematic diagram of the structure of a single-unit large-capacity solid polymer lithium ion battery injection device according to an embodiment of the present invention; FIG. 2 is a schematic diagram of the structure of the module board of FIG. 1; 2 is a schematic diagram of a module structure of the liquid filling station of FIG. 1; FIG. 2 is a schematic diagram of the module structure of the resting station of FIG. 1 . FIG. 2 is a schematic diagram of a modular structure of the packaging station of FIG. 1;

In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be described clearly and comprehensively below with reference to the drawings of the embodiments of the present invention. Of course, the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. In general, the components of the embodiments of the present invention described and shown in the drawings herein may be laid out and designed in various different configurations.

Therefore, the detailed description of the embodiments of the present invention provided in the following drawings does not limit the scope of the invention to be protected, but merely represents a preferred embodiment of the present invention. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention without any creative effort also fall within the scope of protection of the present invention.

It should be noted that like numerals and letters indicate like components in the following drawings, so that once a component is defined in one drawing, it does not require further definition and interpretation in subsequent drawings.

In the description of the embodiments of the present invention, the orientation or positional relationship indicated by terms such as "inside" and "outside" is the orientation or positional relationship shown based on the drawings, or the orientation or positional relationship in which the product of the present invention is normally disposed when in use, and is merely intended to facilitate and simplify the description of the present invention, and does not expressly or imply that such devices or elements have a specific orientation, or must be configured and operated in a specific orientation, and therefore cannot be construed as limiting the present invention. In addition, terms such as "first" and "second" are used merely to distinguish between expressions, and cannot be understood as expressing or implying relative importance.

In the description of the embodiments of the present invention, it should be further explained that unless otherwise clearly specified or limited, the terms "provided" and "connected" should be understood in a broad sense, and may be, for example, a fixed connection, a removable connection, or an integral connection, a mechanical connection or an electrical connection, a direct connection, an indirect connection via an intermediate medium, or internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

Below, we will explain a single-unit large-capacity solid polymer lithium ion battery injection device 100 according to one embodiment of the present invention with reference to the drawings.

As shown in Figures 1 to 5, a single-unit large-capacity solid polymer lithium-ion battery injection device 100 according to an embodiment of the present invention includes a frame 1, a moving mechanism 2 attached to the frame 1, a module base 3 drivably connected to the moving mechanism 2, three modules 4 spaced apart in sequence along a first predetermined direction, an injection assembly 5, a stationary assembly 6, and a packaging assembly 7.

Specifically, the frame 1 is installed in the operating field and performs the function of storing and supporting. The movement mechanism 2 is attached to the frame 1, the module base 3 is drivably connected to the movement mechanism 2 and is used to place the battery 01, and the module base 3 is provided with a vacuum assembly 8 to create a vacuum environment within the module base 3.

As shown in FIG. 1, the three modules 4 are spaced apart along the width direction (first predetermined direction) of the single-unit large-capacity solid polymer lithium-ion battery injection machine 100, which is the left-right direction on the page, and each module 4 is slidably connected to the frame 1 by a lifting mechanism 9. The lifting mechanism 9 can move the corresponding module 4 back and forth along the height direction (second predetermined direction) of the single-unit large-capacity solid polymer lithium-ion battery injection machine 100, which is the up-down direction on the page, relative to the frame 1 in order to connect the module 4 and the module base 3.

The liquid injection assembly 5, the stationary assembly 6, and the packaging assembly 7 each cooperate with the three modules 4 in a one-to-one relationship. The moving mechanism 2 can drive the module base 3 to reciprocate along a first predetermined direction in order to selectively face one of the three modules 4. When the module base 3 faces a different module 4, the lifting mechanism 9 drives the corresponding module 4 to move until it is coupled to the module base 3, and a sealed space is formed. Specifically, when the module base 3 moves to face the module 4 that cooperates with the liquid injection assembly 5, the lifting mechanism 9 corresponding to the module 4 can be driven to move until the module 4 is coupled to the module base 3 to form a sealed space in order to inject liquid into the battery 01 in the module base 3. When the module base 3 moves to face the module 4 that cooperates with the stationary assembly 6, the lifting mechanism 9 corresponding to the module 4 can be driven to move until the module 4 is coupled to the module base 3 to form a sealed space in order to permeate the electrolyte into the battery 01 in the module base 3. When the module board 3 moves to face the module 4 cooperating with the packaging assembly 7, the lifting mechanism 9 corresponding to the module 4 can be driven to move until the module 4 is combined with the module board 3 to form a sealed space for packaging the battery 01 in the module board 3. The vacuum assembly 8 evacuates the sealed space, so that the assemblies having different functions (the liquid injection assembly 5, the stationary assembly 6, and the packaging assembly 7) complete the operation of liquid injection, stationary, or packaging in the corresponding sealed space. By providing three modules 4 with different functions on the frame 1, the module board 3 can selectively cooperate with each of the three modules 4. The single-unit large-capacity solid polymer lithium-ion battery liquid injection machine 100 has a compact structure, a small volume, multiple stations in one machine, and multiple processes are completed on the same frame 1. The vacuum assembly 8 realizes the feeding, liquid injection, stationary, and packaging operations in a vacuum environment, shortening the time required for sufficient electrolyte infiltration and improving production efficiency.

The single-unit large-capacity solid polymer lithium-ion battery injection machine 100 according to the embodiment of the present invention shares one module base 3 and selectively couples it to three modules 4, thereby realizing multiple functions in one machine, making rational use of the space in the frame 1, making the structure compact, and improving production efficiency.

According to some embodiments of the present invention, the frame 1 is provided with a feed station 11, a liquid injection station 12, a static station 13, and a packaging station 14, which are sequentially arranged along a first predetermined direction, and the module 4 corresponding to the liquid injection assembly 5 is a liquid injection module 4, the module 4 corresponding to the static assembly 6 is a static module 4, and the module 4 corresponding to the packaging assembly 7 is a packaging module 4, and the liquid injection module 4 is located at the liquid injection station 12, the static module 4 is located at the static station 13, and the packaging module 4 is located at the packaging station 14. The feed station 11 is located at one end of the frame 1, and in the initial state, the module base 3 is located at the feed station 11 to wait for the battery 01 to be fed into the module base 3. By providing the feed station 11, the liquid injection station 12, the static station 13, and the packaging station 14, the feeding, liquid injection, static placement, and packaging of the battery 01 can be respectively realized, the structural space of the frame 1 can be rationally utilized, and the production efficiency can be easily improved. By dividing the stations according to different functions, it is easier to achieve the required process operations in the corresponding stations, and the utilization rate of frame 1 can be improved.

According to some embodiments of the present invention, as shown in FIG. 2, the module board 3 includes a module board housing 31 and a first transmission member 32 attached to the module board housing 31, the first transmission member 32 is operably connected to the moving mechanism 2, the module board housing 31 is slidably connected to the frame 1, and when the moving mechanism 2 is operated, the moving mechanism 2 can drive the first transmission member 32 to move along a first predetermined direction relative to the frame 1. In order to facilitate the user's operation and rationally utilize the structural space, the first transmission member 32 is located on the side wall of the module board housing 31, and the vacuum assembly 8 is located on the bottom wall of the module board housing 31. The module board housing 31 has a first accommodating cavity 311 with one end open, and the open end of the first accommodating cavity 311 is located at the end (the upper end of the module board housing 31) close to the module 4 of the module board 3 in the second predetermined direction. The first accommodating cavity 311 is used for placing the battery 01, and the vacuum assembly 8 communicates with the first accommodating cavity 311. When the module base 3 is coupled to one of the three modules 4, the open end of the first accommodating cavity 311 is sealed by the corresponding module 4 to form a sealed space, and the vacuum assembly 8 evacuates the sealed space to place the battery 01 in a vacuum environment. The first transmission member 32 moves the module base housing 31 along the first predetermined direction by the power of the moving mechanism 2, so that the opening of the module base housing 31 faces the module 4, the battery 01 is located in the first storage cavity 311 of the module base housing 31, and when the lifting mechanism 9 drives the module 4 to be coupled with the module base 3, the first storage cavity 311 is sealed by the module 4, and the module base 3 and the module 4 form a sealed space, and the vacuum assembly 8 can evacuate the sealed space so that injection, standing, or packaging can be performed in a vacuum environment.

The vacuum assembly 8 is detachably connected to the module base housing 31 to facilitate replacement and maintenance of the vacuum assembly 8. In other embodiments of the present invention, the position of the vacuum assembly 8 may be located on the side wall of the module base housing 31, and the user may select a different mounting position of the vacuum assembly 8 according to the actual situation. The position of the first transmission member 32 may be located on the bottom wall of the module base housing 31, and the user may select a different mounting position of the first transmission member 32 according to the actual situation.

If the battery 01 is relatively large, its center of gravity is unstable and it is likely to tip over if the battery 01 is placed vertically. Therefore, the module base 3 is selectively installed at an angle, so that the battery 01 is abutted against the inner wall of the module base housing 31, making it easier to support the battery 01.

According to some embodiments of the present invention, the moving mechanism 2 includes a driving member 21 and a second transmission member 22, and the driving member 21 is attached to one end of the frame 1 (the end away from the feed station 11) to facilitate the movement of the module board 3 and prevent interference between the members. The output end of the driving member 21 is rotatable relative to the frame 1, and the second transmission member 22 is operably connected to the output end of the driving member 21, and transmits the power of the driving member 21 to the first transmission member 32 through cooperation between the second transmission member 22 and the first transmission member 32. The frame 1 is provided with a first slide member 15 extending along a first predetermined direction, and a second slide member 33 for matching with the first slide member 15 is provided on the outer surface of the module board housing 31, and the module board housing 31 and the frame 1 are slidably connected via the second slide member 33 and the first slide member 15. When the driving member 21 is operated, the output end of the driving member 21 can drive the second transmission member 22 to rotate relative to the frame 1, and the rotation of the second transmission member 22 can move the first transmission member 32 along the first predetermined direction relative to the frame 1 so that the module board housing 31 moves along the first predetermined direction relative to the frame 1. The provision of the first slide member 15 and the second slide member 33 can fulfill a guiding function and ensure the stability of the movement of the module board housing 31. The second transmission member 22 and the first transmission member 32 cooperate to transmit the power of the drive member 21 to the first transmission member 32. At the same time, the frame 1 and the module board housing 31 are provided with a first slide member 15 and a second slide member 33, respectively. The drive member 21 can be driven by the power output of the drive member 21 so that the first transmission member 32 moves relative to the frame 1 in order for the module board housing 31 to move along a first predetermined direction relative to the frame 1, and the module board housing 31 moves stably relative to the frame 1.

In some specific embodiments of the present invention, the driving member 21 is a driving motor, and optionally the driving motor is a servo motor, which facilitates adjustment of the rotation speed of the driving motor. The case of the driving motor is detachably connected to the frame 1 to facilitate maintenance and replacement of the driving motor. The first transmission member 32 is a screw seat, and the second transmission member 22 is a threaded rod, and the threaded seat is fitted with the threaded rod by fitting the outside of the threaded rod, and one end of the threaded rod is connected to the output end of the driving motor in a transmission manner, and the other end is connected to the frame 1 in a rotatable manner. The cooperation of the threaded rod and the threaded seat converts the rotation of the driving motor into a linear motion of the threaded seat, and the screw seat controls the movement speed on the threaded rod by controlling the rotation speed of the threaded rod by the driving motor. The first slide member 15 is a slide rail, and the second slide member 33 is a slider, and the slider and the slide rail are slidably connected. The cooperation between the screw rod and the screw seat facilitates converting the rotation of the drive motor into the linear motion of the screw seat, enabling the module base 3 to move along a first predetermined direction; the cooperation between the slider and the slide rail ensures that the slider and the slide rail have a certain contact area, thereby making the movement of the module base 3 more flexible and improving the operating efficiency. In another embodiment of the present invention, the drive member 21 (drive motor) is attached to the module board housing 31, the first transmission member 32 is a pinion, the first transmission member 32 is connected to the drive member 21 in a drivable manner, the second transmission member 22 is a rack, the second transmission member 22 is attached to the frame 1, the first transmission member 32 (pinion) meshes with the second transmission member 22 (rack), and the drive member 21 may be configured to move the module board 3 by rotating the first transmission member 32 so as to move the first transmission member 32 by the second transmission member.

According to some embodiments of the present invention, each module 4 includes a module housing 41 and a guide assembly 42 attached to the module housing 41. The guide assembly 42 extends along the second predetermined direction and is slidably connected to the frame 1. The guide assembly 42 is for guiding the module 4 to move along the second predetermined direction so that the module 4 and the module board 3 are accurately coupled. The module housing 41 has a second accommodation cavity 411 with one end open, and the open end of the second accommodation cavity 411 is located at an end of the module housing 41 close to the module board 3 in the second predetermined direction. As shown in Figures 3 to 5, the module 4 is provided along the second predetermined direction, and the open end of the second accommodation cavity 411 is located at the bottom of the module housing 41. The lifting mechanism 9 is attached to the frame 1, and the protruding end of the lifting mechanism 9 is detachably connected to the module housing 41. The lifting mechanism 9 may be a cylinder, and in other embodiments of the present invention, the lifting mechanism 9 may be a hydraulic cylinder or the like. When the module board 3 is coupled to one of the three modules 4, the first and second storage cavities 311 and 411 communicate with each other and are sealed, and the module board 3 and the corresponding module 4 surround (combine to form) a sealed space, and the vacuum assembly 8 can evacuate this sealed space. The module housing 41 is provided with an open second storage cavity 411, and when the module 4 and the module board 3 are coupled, the first and second storage cavities 311 and 411 are sealed to each other to form a sealed space, making it easy to perform injection, standing, or packaging operations in this sealed space. By providing the guide assembly 42, the module 4 can be moved accurately and easily coupled to the module board 3, ensuring the matching and sealing properties between the module 4 and the module board 3.

Optionally, as shown in FIG. 1, the frame 1 is provided with a cross member 16 for supporting the lifting mechanism 9, the cross member 16 extends along a first predetermined direction, and the lifting mechanism 9 is detachably connected to the cross member 16. The guide assembly 42 includes four guide rods 421, which are arranged at the four corners of the module housing 41 to facilitate stable movement of the module 4. The guide rods 421 pass through the cross member 16 and are slidably connected to the cross member 16 via linear bearings 43.

In some specific embodiments of the present invention, as shown in FIG. 3, the liquid injection assembly 5 includes a liquid injection cylinder 51, a liquid injection head connection seat 52, and a liquid injection head 53 attached to the liquid injection head connection seat 52. The liquid injection cylinder 51 is provided along a second predetermined direction and is connected to the module housing 41 of the liquid injection module 4. The cylinder body of the liquid injection cylinder 51 is detachably connected to the module housing 41 of the liquid injection module 4 so as to facilitate maintenance and replacement of the liquid injection cylinder 51, and is connected, for example, by bolt connection, locking, adhesion, etc. In other embodiments of the present invention, the cylinder body of the liquid injection cylinder 51 may be fixedly connected to the module housing 41 of the liquid injection module 4, for example, by welding, crimping, etc. The liquid injection cylinder 51 is located outside the second housing cavity 411, the protruding end (the tip of the piston rod) of the liquid injection cylinder 51 extends into the second housing cavity 411, and the liquid injection head connecting seat 52 and the liquid injection head 53 are located within the second housing cavity 411. The liquid injection head connecting seat 52 is detachably connected to the protruding end of the liquid injection cylinder 51, and the protruding end of the liquid injection cylinder 51 can be driven to reciprocate the liquid injection head 53 along a second predetermined direction, thereby connecting the liquid injection head 53 to the battery 01. The liquid injection head 53 is detachably connected to the liquid injection head connecting seat 52 so as to facilitate replacement and maintenance of the liquid injection head 53. The liquid injection head 53 extends along a second predetermined direction, the liquid inlet end of the liquid injection head 53 is used to connect to a liquid injection pump, and the liquid delivery end of the liquid injection head 53 is used to inject liquid into the battery 01. When the liquid injection head 53 is connected to the liquid injection pump, the liquid injection pump is started and the liquid injection head 53 can inject liquid into the battery 01. The liquid injection cylinder 51 drives the liquid injection head 53 so that it comes into contact with the battery 01, so that the liquid injection head 53 can move flexibly and easily perform liquid injection operations for different batteries 01.

Furthermore, the liquid injection assembly 5 further includes two suction cylinders 54. The two suction cylinders 54 are installed on two opposing housing walls of the module housing 41 of the liquid injection module 4, and the protruding ends of the suction cylinders 54 are located in the second housing cavity 411, and the vacuum suction cups 55 are connected to the protruding ends of the suction cylinders 54. The cylinder body of the suction cylinder 54 is detachably connected to the module housing 41 so as to facilitate replacement and maintenance of the suction cylinder 54, and is connected, for example, by bolt connection, locking, etc. In another embodiment of the present invention, the cylinder body of the suction cylinder 54 may be fixedly connected to the module housing 41, or may be connected, for example, by welding or crimping. The vacuum suction cup 55 is adsorbed to the aluminum plastic film 02 of the exterior of the battery 01, and the aluminum plastic film 02 corresponding to the vacuum suction cup 55 can be pulled apart so that an opening is formed between the two aluminum plastic films 02 for the liquid injection head 53 to enter. The suction cylinder 54 cooperates with the vacuum suction cup 55, and the suction force of the vacuum suction cup 55 separates the two aluminum plastic films 02 to a relatively large opening, allowing the liquid injection head 53 to enter the battery 01 and facilitate the liquid injection operation. Since the liquid injection operation is performed in a vacuum environment, after the liquid injection operation is completed, the liquid injection module 4 separates from the module base 3, and the electrolyte can then permeate into the battery 01 by gravity, improving the permeation effect. The two vacuum suction cups 55 installed opposite each other act on the aluminum plastic film 02 of the battery 01, and the movement of the suction cup cylinder 54 separates the aluminum plastic film 02 of the battery 01 to form an opening for liquid injection, making it easy for the liquid injection head 53 to inject the electrolyte into the battery 01.

According to some embodiments of the present invention, as shown in FIG. 4, the stationary assembly 6 includes a nitrogen filling mechanism. The nitrogen filling mechanism is attached to the module housing 41 of the stationary module 4, communicates with the second storage cavity 411 of the stationary module 4, and fills the second storage cavity 411 with nitrogen gas. The nitrogen filling mechanism includes a nitrogen gas storage container (not shown) and an air pump (not shown). The air pump causes the nitrogen gas in the nitrogen gas storage container to flow into the sealed space formed by the joining of the stationary module 4 and the module base 3, thereby changing the air pressure in the sealed space, compressing the battery 01 and allowing the electrolyte to permeate into the battery 01. The pressure in the sealed space is changed by the nitrogen gas sent through the nitrogen filling mechanism, accelerating the permeation of the electrolyte into the battery 01 and improving the efficiency of stationary. By pumping nitrogen gas using the nitrogen filling mechanism and intermittent operation of the vacuum assembly 8, it is possible to alternate between two states, vacuum and nitrogen filling, within the sealed space, accelerating the penetration of the electrolyte into the battery 01 and improving the efficiency of the static setting.

According to some embodiments of the present invention, as shown in FIG. 5, the packaging assembly 7 includes two packaging cylinders 71. The two packaging cylinders 71 are attached to two opposing housing walls of the module housing 41 of the packaging module 4, and the two packaging cylinders 71 correspond one-to-one to the two aluminum plastic films 02 of the battery 01. The packaging cylinders 71 are attached to the module housing 41 and are detachably connected to the module housing 41 to facilitate replacement and maintenance of the packaging cylinders 71. The packaging cylinders 71 are located outside the second housing cavity 411 of the packaging module 4, and the protruding end of the packaging cylinders 71 is located within the second housing cavity 411, and a head 73 with a heating element 72 is connected to the protruding end of the packaging cylinders 71. The packaging cylinder 71 can be operated to move one corresponding head 73 toward the other head 73 so that the two heads 73 jointly act on the two aluminum plastic films 02 of the battery 01 to press and melt the two aluminum plastic films 02, thereby packaging the battery 01. The packaging cylinder 71 moves the head 73 with the heating part 72 until it is in close contact with and presses the aluminum plastic films 02, making it easier to package the battery 01 and improving the efficiency of packaging the battery 01.

Optionally, the heating component 72 may be a heating tube, which can improve the heating efficiency of the head 73 and facilitate packaging of the aluminum-plastic film 02. After the packaging module 4 and the module base 3 are combined to form a sealed space, the vacuum assembly 8 vacuums the sealed space, thereby ensuring that the packaging operation is performed in a vacuum environment.

The frame 1 is further provided with a control panel 17 for connection to each electrical component, and the user operates the control panel 17 to control the electrical components. Each cylinder is also connected to an external gas source, and the control end of each cylinder is provided on the control panel 17 and corresponds to a corresponding button, and the user can control a different cylinder by pressing the corresponding button.

Hereinafter, the operating principle of the single-unit large-capacity solid polymer lithium ion battery injection device 100 according to an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the frame 1 is provided with a feed station 11, a liquid injection station 12, a station 13, and a packaging station 14 along a first predetermined direction, and a vacuum assembly 8 is arranged on the module base 3. The module base 3 selectively cooperates with three modules 4 to form an enclosed space, and the vacuum assembly 8 evacuates the enclosed space to create a vacuum environment, so that liquid injection, stationary standing, and packaging are performed in a vacuum environment. This single-unit large-capacity solid polymer lithium-ion battery liquid injection machine 100 has a compact structure and is equipped with multiple functions, and can realize feeding, liquid injection, stationary standing, and packaging operations, thereby improving production efficiency. In addition, when the stationary module 4 is combined with the module base 3, the stationary standing efficiency can be improved by filling the enclosed space with nitrogen, and the stationary standing time can be significantly shortened.

The single-unit large-capacity solid polymer lithium-ion battery injection machine 100 according to the present invention has a simplified structure, is low cost, and can improve the production efficiency of the battery 01. One machine is equipped with multiple stations, and can improve the space utilization rate of the frame 1.

It should be understood that the features in the embodiments of the present invention may be combined with each other unless they are inconsistent.

The above is merely a preferred embodiment of the present invention, and is not intended to limit the present invention. Those skilled in the art will appreciate that the present invention may be modified and changed in various ways. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

100 Single-unit large-capacity solid polymer lithium ion battery injection machine 01 Battery 02 Aluminum plastic film 1 Frame 11 Feed station 12 Injection station 13 Standing station 14 Packaging station 15 First slide member 16 Cross member 17 Control panel 2 Movement mechanism 21 Driving member 22 Second transmission member 3 Module base 31 Module base housing 311 First accommodating cavity 32 First transmission member 33 Second slide member 4 Module 41 Module housing 411 Second accommodating cavity 42 Guide assembly 421 Guide rod 43 Linear bearing 5 Injection assembly 51 Injection cylinder 52 Injection head connection seat 53 Injection head 54 Suction cup cylinder 55 Vacuum suction cup 6 Standing assembly 7 Packaging assembly 71 Packaging cylinder 72 Heating part 73 Head 8 Vacuum assembly 9 Lifting mechanism

Claims (10)

A frame,
A moving mechanism attached to the frame;
a module base that is operably connected to the moving mechanism, that is provided with a vacuum assembly, and that is for mounting a battery;
three modules spaced apart from one another along a first predetermined direction;
a liquid injection assembly, a static placement assembly and a packaging assembly which cooperate one-to-one with each of the three modules;
Each of the modules is slidably connected to the frame via a lift mechanism, and the lift mechanism is movable to reciprocate the corresponding module relative to the frame along a second predetermined direction to couple the module and the module base;
the moving mechanism is operable to reciprocate the module board along the first predetermined direction so that the module board selectively corresponds to one of the three modules;
When the module base moves to face a module that cooperates with the liquid injection assembly, the lifting mechanism corresponding to the module can be driven to move until the module is coupled to the module base to form a sealed space in order to inject liquid into the battery in the module base, when the module base moves to face a module that cooperates with the stationary assembly, the lifting mechanism corresponding to the module can be driven to move until the module is coupled to the module base to form a sealed space in order to permeate the battery in the module base with an electrolyte, when the module base moves to face a module that cooperates with the packaging assembly, the lifting mechanism corresponding to the module can be driven to move until the module is coupled to the module base to form a sealed space in order to package the battery in the module base.
Single-unit large-capacity solid polymer lithium-ion battery injection machine. The single-unit large-capacity solid polymer lithium ion battery injection machine according to claim 1, wherein the frame is provided with a feed station, an injection station, a static station, and a packaging station that are sequentially arranged along the first predetermined direction, the injection assembly is located at the injection station, the static assembly is located at the static station, the packaging assembly is located at the packaging station, and in an initial state, the module board is located at the feed station. The module base includes a module base housing and a first transmission member attached to the module base housing, the first transmission member is operably connected to the moving mechanism, the module base housing is slidably connected to the frame, the moving mechanism is operable to move the first transmission member relative to the frame along the first predetermined direction when activated, the module base housing has a first housing cavity with one end open for placing a battery, the open end of the first housing cavity is located at an end of the module base housing closer to the module in the second predetermined direction, the vacuum assembly communicates with the first housing cavity, when the module base is coupled to one of the three modules, the module forms a sealed space with the module, and the vacuum assembly vacuums the sealed space. The single-unit large-capacity solid polymer lithium ion battery injection machine according to claim 1. The moving mechanism includes a driving member and a second transmission member, the driving member is attached to the frame, the second transmission member is operably connected to the output end of the driving member, the second transmission member is operably connected to the first transmission member, the frame is provided with a first slide member extending along the first predetermined direction, the outer surface of the module board housing is provided with a second slide member for matching with the first slide member, the module board housing and the frame are slidably connected via the second slide member and the first slide member, the driving member is drivable to rotate the second transmission member relative to the frame when actuated, and the rotation of the second transmission member moves the first transmission member relative to the frame along the first predetermined direction so that the module board housing moves along the first predetermined direction relative to the frame. The single-unit large-capacity solid polymer lithium ion battery injection machine according to claim 3. The single-unit large-capacity solid polymer lithium-ion battery injection machine according to claim 4, wherein the driving member is a driving motor, the first transmission member is a screw seat, the second transmission member is a threaded rod, the screw seat is fitted with the threaded rod by fitting the outside of the threaded rod, one end of the threaded rod is connected to the output end of the driving motor in a drivable manner and the other end is connected to the frame in a rotatable manner, the first slide member is a slide rail, the second slide member is a slider, and the slider and the slide rail are slidably connected. The single-unit large-capacity solid polymer lithium ion battery injection machine according to claim 3, wherein each of the modules includes a module housing and a guide assembly attached to the module housing, the module housing has a second storage cavity with one open end, the open end of the second storage cavity is located at an end of the module housing close to the module base in the second predetermined direction, the guide assembly extends along the second predetermined direction and is slidably connected to the frame, the guide assembly guides the module when it moves along the second predetermined direction, the lifting mechanism is attached to the frame, and the protruding end of the lifting mechanism is detachably connected to the module housing, and when the module base is coupled to one of the three modules, the first storage cavity communicates with the second storage cavity, and the module base and the module surround each other to form the sealed space. The module corresponding to the liquid injection assembly is a liquid injection module, and the liquid injection assembly includes a liquid injection cylinder, a liquid injection head connection seat, and a liquid injection head attached to the liquid injection head connection seat, the liquid injection cylinder is provided along the second predetermined direction, is connected to the module housing of the liquid injection module, and is located outside the second housing cavity of the liquid injection module, the protruding end of the liquid injection cylinder extends into the second housing cavity, the liquid injection head connection seat and the liquid injection head are located within the second housing cavity, the liquid injection head connection seat is detachably connected to the protruding end of the liquid injection cylinder, the liquid injection head extends along the second predetermined direction, the liquid inlet end of the liquid injection head is used to connect to a liquid injection pump, the liquid delivery end of the liquid injection head is used to inject liquid into the battery, and the protruding end of the liquid injection cylinder is capable of driving the liquid injection head to reciprocate along the second predetermined direction. The liquid injection assembly further includes two suction cylinders, the two suction cylinders being provided on two opposing housing walls of the module housing of the liquid injection module, the protruding ends of the suction cylinders being located in the second housing cavity of the liquid injection module, and the protruding ends of the suction cylinders being connected to vacuum suction cups, the vacuum suction cups being sucked to the aluminum plastic films of the battery and pulling apart the corresponding aluminum plastic films so that an opening is formed between the two aluminum plastic films through which the liquid injection head can enter. The single-unit large-capacity solid polymer lithium ion battery injection machine according to claim 7. The single-unit large-capacity solid polymer lithium ion battery injection machine according to claim 6, wherein the module corresponding to the stationary assembly is a stationary module, the stationary assembly includes a nitrogen filling mechanism attached to the module housing of the stationary module, the nitrogen filling mechanism communicates with a second storage cavity of the stationary module, and fills the second storage cavity with nitrogen gas. 7. The single-unit large-capacity solid polymer lithium ion battery injection machine according to claim 6, wherein the module corresponding to the packaging assembly is a packaging module, the packaging assembly includes two packaging cylinders, the two packaging cylinders are attached to two opposing housing walls of a module housing of the packaging module, the protruding ends of the packaging cylinders are located in a second accommodating cavity of the packaging module, and a head with a heating component is connected to the protruding end of the packaging cylinder, and the packaging cylinder is drivable to move one of the corresponding heads toward the other head so that the two heads jointly act on two aluminum-plastic films of the battery to press and melt the two aluminum-plastic films.

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