Integrated processing device based on liquid injection and pre-packaging of battery cell

Abstract

The utility model discloses a kind of integrated processing device based on battery cell liquid injection and pre-packaging, it is related to battery manufacturing field;Among them, lower box and upper box can be dismantled to form liquid injection packaging cavity, lower box or upper box is equipped with suction port and the gas inlet for inert gas injection, suction port and gas inlet are all communicated liquid injection packaging cavity, and positioning support part for placing and positioning battery cell is equipped in lower box;Liquid injection mechanism is arranged on the upper box and has liquid injection part, and liquid injection part extends to liquid injection packaging cavity to inject electrolyte for battery cell;Hot-press packaging mechanism is arranged on the upper box or lower box and has two oppositely arranged hot-press parts, two hot-press parts are located in liquid injection packaging cavity, and can be close to along first direction to carry out hot-press sealing for battery cell after liquid injection.The utility model can effectively isolate oxygen in battery cell liquid injection and pre-packaging process, improve battery cell quality, and also can save cost and space, and improve liquid injection packaging efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to an integrated processing device based on cell liquid injection and pre-packaging. Background Technology

[0002] After battery cells are assembled, they need to undergo electrolyte injection, and after the electrolyte injection is completed, they need to be pre-packaged. Currently, the electrolyte injection mechanism and the pre-packaging mechanism operate in two separate chambers. This can lead to the cells being exposed to oxygen during the process of completing the electrolyte injection and transporting them to the corresponding chamber of the pre-packaging mechanism, which can affect the quality of the battery cells. In addition, it also increases the cost and space required for the equipment. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an integrated processing device based on cell liquid injection and pre-packaging, which can effectively isolate oxygen during the cell liquid injection and pre-packaging process, improve the manufacturing quality of the cell, and also save costs and space, while improving the efficiency of liquid injection and packaging.

[0004] This utility model embodiment provides an integrated processing device based on cell liquid injection and pre-packaging, which includes:

[0005] upper box;

[0006] The lower housing is detachably connected to the upper housing to form a liquid injection and encapsulation cavity. The lower housing or the upper housing is provided with an air extraction port and an air inlet for inert gas injection. Both the air extraction port and the air inlet are connected to the liquid injection and encapsulation cavity. The lower housing is provided with a positioning support for placing and positioning the battery cell.

[0007] The liquid injection mechanism is located on the upper housing and has a liquid injection section that extends into the liquid injection encapsulation cavity for injecting electrolyte into the battery cell.

[0008] A thermo-pressing encapsulation mechanism is provided on the upper housing or the lower housing. The thermo-pressing encapsulation mechanism has two opposing thermo-pressing parts located inside the liquid injection encapsulation cavity and configured to approach each other along a first direction for thermo-pressing and sealing the battery cell after liquid injection. The first direction is perpendicular to the up and down direction.

[0009] The integrated processing device based on cell liquid injection and pre-packaging according to the embodiments of this utility model has at least the following beneficial effects: After the cell is placed on the positioning support in the lower housing, the upper housing and the lower housing are connected to form a liquid injection and packaging cavity; then, the air in the liquid injection and packaging cavity is extracted through the air extraction port, and then inert gas is introduced into the liquid injection and packaging cavity through the air inlet port, thereby providing protective gas for the liquid injection process and the hot-pressing packaging process; next, electrolyte is injected into the cell located in the liquid injection and packaging cavity through the liquid injection mechanism, and then the liquid-injected cell is packaged through the hot-pressing packaging mechanism. The heat-sealing process prevents electrolyte leakage from the battery cell. This design effectively isolates oxygen, preventing the electrolyte from easily coming into contact with oxygen during the injection and heat-sealing processes, thus improving the manufacturing quality of the battery cell. Moreover, the injection and heat-sealing processes are completed within the same injection and sealing cavity, eliminating the need for battery cell transfer between the injection and heat-sealing steps, which improves injection and sealing efficiency. At the same time, the integrated design of the injection mechanism, heat-sealing mechanism, upper housing, and lower housing reduces manufacturing costs and space requirements.

[0010] In some embodiments of this utility model, a peeling mechanism is provided on the upper housing or the lower housing; the peeling mechanism includes a first driving member and an adsorption assembly, the adsorption assembly is partially located in the liquid injection packaging cavity, two adsorption assemblies are provided, and they are spaced apart and arranged opposite to each other along a first direction. The first driving member is configured to drive the two adsorption assemblies to approach the battery cell along the first direction to perform vacuum adsorption on the battery cell, and to drive the two adsorption assemblies to move away from the battery cell along the first direction to peel off the battery cell, so that a liquid injection port is formed on the battery cell.

[0011] In some embodiments of this utility model, the adsorption assembly includes multiple adsorption rods, which extend along a first direction to the outside of the liquid injection packaging cavity. Each adsorption rod is provided with a vacuum channel, one end of which forms a vacuum port, and the other end forms an adsorption port for vacuum adsorption of the battery cell.

[0012] In some embodiments of this utility model, the hot-pressing packaging mechanism includes a second driving member, a moving member, a heating member, and a pressing member. The moving member is located inside the liquid injection packaging cavity. There are two moving members, which are spaced apart and arranged opposite to each other along a first direction. The moving member is provided with the heating member and the pressing member. The heating member is configured to heat the pressing member. The pressing member is the hot-pressing part. The second driving member is configured to drive the two moving members to approach the battery cell along the first direction, so that the pressing member hot-presses and seals the battery cell.

[0013] In some embodiments of this utility model, the thermopressing packaging mechanism further includes a temperature sensing probe, the extruder is in contact with the temperature sensing probe, and the temperature sensing probe is configured to detect the temperature of the extruder in real time; and / or,

[0014] The heating element is an electric heating rod.

[0015] In some embodiments of this utility model, the liquid injection mechanism includes a liquid injection needle and a third driving member. The liquid injection needle is set as the liquid injection part and extends downward into the liquid injection packaging cavity. The third driving member is disposed on the upper housing and is configured to drive the liquid injection needle to move in the up and down direction.

[0016] In some embodiments of this utility model, the liquid injection mechanism further includes a fourth driving member and a sealing baffle. The sealing baffle is located inside the liquid injection packaging cavity. The sealing baffle is provided with a liquid extraction channel. One end of the liquid extraction channel forms a liquid extraction inlet, and the other end forms a liquid extraction outlet. The liquid extraction outlet is connected to a vacuum pipe, which extends to the outside of the liquid injection packaging cavity. The fourth driving member is configured to drive the sealing baffle to rotate and approach the liquid injection needle, so that the liquid extraction inlet is movably connected and communicates with the liquid injection head of the liquid injection needle after liquid injection.

[0017] In some embodiments of this utility model, the integrated processing device based on cell liquid injection and pre-packaging further includes a lifting mechanism, which is configured to drive the upper housing or the lower housing to move in the vertical direction.

[0018] In some embodiments of this utility model, the integrated processing device based on cell liquid injection and pre-packaging further includes a translation mechanism, which is configured to drive the upper housing or the lower housing to move in the horizontal direction.

[0019] In some embodiments of this utility model, an annular sealing ring is provided at the connection between the upper housing and the lower housing; and / or,

[0020] The lower housing is equipped with a cell positioning mechanism, which is the positioning support part, and the cell positioning mechanism has a cell positioning cavity with an upward opening.

[0021] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0022] Figure 1This is a three-dimensional structural schematic diagram of an integrated processing device based on cell liquid injection and pre-packaging provided according to an embodiment of the present utility model;

[0023] Figure 2 This is a front view of an integrated processing device based on cell liquid injection and pre-packaging provided according to an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram showing the connection between the liquid injection mechanism, the hot-pressing packaging mechanism, and the peeling mechanism provided in the embodiment of this utility model and the upper housing.

[0025] Figure 4 This is a three-dimensional structural schematic diagram of the injection mechanism provided according to an embodiment of the present utility model;

[0026] Figure 5 This is a three-dimensional structural schematic diagram of the sealing baffle provided according to an embodiment of the present utility model;

[0027] Figure 6 This is a schematic diagram showing the relative positions of the thermo-pressing packaging mechanism and the peeling mechanism according to an embodiment of the present utility model;

[0028] Figure 7 This is a three-dimensional structural schematic diagram of the thermo-pressing packaging mechanism provided according to an embodiment of the present utility model;

[0029] Figure 8 This is a schematic diagram of the peeling mechanism provided according to an embodiment of the present utility model;

[0030] Figure 9 This is a three-dimensional structural diagram of the lower housing provided according to an embodiment of the present utility model.

[0031] Reference numerals: 100, Upper housing; 110, Support; 200, Lower housing; 210, Second cavity; 300, Liquid injection mechanism; 310, Liquid injection needle; 311, Liquid injection head; 320, Third driving component; 330, Base; 340, Liquid extraction port; 350, Fourth driving component; 360, Sealing baffle; 370, Liquid extraction inlet; 380, Liquid extraction outlet; 400, Hot-press sealing mechanism; 410, Second driving component; 420, Moving component; 430, Guide rail; 440, Heating component. ; 450, Temperature sensor; 460, Extrusion component; 500, Peeling mechanism; 510, First driving component; 520, Adsorption assembly; 530, Vacuum port; 540, Moving seat; 550, Fixed seat; 560, Vacuum nozzle; 600, Lifting mechanism; 610, Fifth driving component; 620, Lifting seat; 700, Translation mechanism; 710, Sixth driving component; 720, Support seat; 730, Translation seat; 810, Air extraction port; 820, Air inlet; 900, Cell positioning mechanism. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "several" means one or more, and "multiple" means two or more.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The following is for reference. Figures 1 to 9 This invention describes an integrated processing apparatus based on cell liquid injection and pre-packaging, according to an embodiment of the present invention.

[0036] like Figures 1 to 9 As shown, the integrated processing apparatus based on cell electrolyte injection and pre-packaging according to an embodiment of this utility model can be used as a component of a battery manufacturing production line to complete the electrolyte injection and pre-packaging of battery cells. Furthermore, this integrated processing apparatus effectively isolates oxygen during the electrolyte injection and pre-packaging processes, preventing oxygen from contacting the electrolyte, thereby improving the manufacturing quality of the cells. It also saves manufacturing costs and space, increases electrolyte injection and packaging efficiency, and promotes increased battery production efficiency.

[0037] The integrated processing device based on cell liquid injection and pre-packaging has a first direction, a second direction, and a vertical direction, wherein the first direction is perpendicular to both the second direction and the vertical direction, and the second direction is perpendicular to the vertical direction. In this embodiment, it is assumed that the first direction is the left-right direction and the second direction is the front-back direction.

[0038] like Figures 1 to 9 As shown, the integrated processing device based on cell liquid injection and pre-packaging includes an upper housing 100, a lower housing 200, a liquid injection mechanism 300, and a thermo-pressing packaging mechanism 400.

[0039] The upper housing 100 is located above the lower housing 200, and the upper housing 100 and the lower housing 200 are arranged vertically opposite each other. The upper housing 100 has a first cavity with its opening facing downwards, and the lower housing 200 has a second cavity 210 with its opening facing upwards. The upper housing 100 and the lower housing 200 are detachably connected so that the first cavity of the upper housing 100 and the second cavity 210 of the lower housing 200 together form a liquid injection and encapsulation cavity, which facilitates the subsequent injection of electrolyte into the battery cell located in the liquid injection and encapsulation cavity by the liquid injection mechanism 300, and then the hot-pressing encapsulation mechanism 400 hot-pressing and encapsulating the battery cell located in the liquid injection and encapsulation cavity.

[0040] It is understood that the shapes of the upper housing 100 and the lower housing 200 are not limited, and the shape of the liquid injection and encapsulation cavity is not limited, as long as it allows the liquid injection mechanism 300 and the thermoforming encapsulation mechanism 400 to respectively perform liquid injection and thermoforming encapsulation on the battery cells located in the liquid injection and encapsulation cavity. In this embodiment, as shown... Figures 1 to 3 , Figure 9 As shown, both the upper housing 100 and the lower housing 200 are rectangular parallelepipeds, and the liquid injection sealing cavity is also rectangular parallelepiped. The upper housing 100 and the lower housing 200 are detachably connected by automated equipment. For example, the upper housing 100 or the lower housing 200 can be moved vertically to allow them to come into contact and connect. Alternatively, the upper housing 100 or the lower housing 200 can be moved horizontally to allow them to be joined together to form the liquid injection sealing cavity.

[0041] Of course, it is possible to achieve the detachable connection between the upper housing 100 and the lower housing 200 manually. In addition, it is possible to drive the upper housing 100 and the lower housing 200 to move together so that the upper housing 100 and the lower housing 200 can move closer to each other or further away from each other, thereby achieving the detachable connection between the upper housing 100 and the lower housing 200.

[0042] To enhance the sealing performance of the upper housing 100 and lower housing 200 after they are connected, in some embodiments, an annular sealing ring is provided at the connection between the upper housing 100 and the lower housing 200. Specifically, a first sealing ring is provided on the lower surface of the upper housing 100, surrounding the first cavity of the upper housing 100, i.e., the first sealing ring is located on the periphery of the first cavity; a second sealing ring is provided on the upper surface of the lower housing 200, surrounding the second cavity 210 of the lower housing 200, i.e., the second sealing ring is located on the periphery of the second cavity 210. After the upper housing 100 and lower housing 200 are connected, the first sealing ring contacts the lower housing 200, and the second sealing ring contacts the upper housing 100, thereby improving the airtightness of the liquid injection sealing cavity and preventing outside air from leaking into the liquid injection sealing cavity through the gap between the upper housing 100 and the lower housing 200. Of course, it is possible that the sealing ring is only installed on the upper housing 100 or the lower housing 200.

[0043] The lower housing 200 is equipped with a positioning support for placing and positioning the power supply cells. This positioning support positions and supports the cells, improving the accuracy of liquid injection and thermoforming. In this embodiment, as... Figure 1 and Figure 9 As shown, a cell positioning mechanism 900 is provided inside the lower housing 200. The cell positioning mechanism 900 serves as a positioning support and includes a cell positioning cavity with its opening facing upwards. The cell positioning cavity allows the cell to be directly inserted from top to bottom and positions and fixes the cell, preventing displacement on the horizontal plane. The structural composition of the cell positioning mechanism 900 is not limited.

[0044] For example, such as Figure 9 As shown, the battery cell positioning mechanism 900 includes a positioning seat and multiple limiting posts. The limiting posts extend in the vertical direction and are fixedly connected to the positioning seat. The positioning seat is fixedly connected to the lower housing 200. The multiple limiting posts are arranged in a matrix to jointly define the battery cell positioning cavity. The upper end of the battery cell protrudes outside the battery cell positioning cavity to facilitate liquid injection and thermo-pressing sealing.

[0045] It is understandable that a robotic arm automatically picks up and places the battery cells onto the positioning support within the lower housing 200 to achieve automatic loading and unloading of the battery cells. Of course, manual loading and unloading of the battery cells is not excluded. Furthermore, in other embodiments, the positioning support may be a positioning groove or a positioning protrusion, with the battery cell, along with the battery cell positioning mechanism 900, placed on the positioning support from top to bottom. After completing the liquid injection and pre-sealing processes, the battery cell and the battery cell positioning mechanism 900 are removed from the second cavity 210 of the lower housing 200.

[0046] Furthermore, the upper housing 100 is equipped with an extraction port 810 and an inlet port 820 for injecting inert gas, both of which are connected to the liquid injection sealing cavity. It is understood that the extraction port 810 and the inlet port 820 can be located on one of the four sides or the upper surface of the upper housing 100. The extraction port 810 can be connected to a vacuum pump via a pipe, and the inlet port 820 can be connected to a gas supply device via a pipe. After the upper housing 100 and the lower housing 200 are connected, the vacuum pump is used to evacuate the liquid injection sealing cavity to remove air, and then the gas supply device is used to supply gas to the liquid injection sealing cavity, delivering inert gas such as nitrogen into the cavity.

[0047] In addition, a pressure sensor or a concentration sensor can be installed on the upper housing 100 to detect the pressure or oxygen concentration inside the liquid injection sealing cavity. Of course, it is not excluded that in other embodiments, the suction port 810 and the inlet port 820 may be located on the lower housing 200.

[0048] The electrolyte injection mechanism 300 is disposed on the upper housing 100 and can be fixedly mounted on the upper housing 100 by bolts. The electrolyte injection mechanism 300 has an injection section that extends into the electrolyte injection encapsulation cavity for injecting electrolyte into the battery cell. It is understood that the electrolyte injection mechanism 300 can be disposed on one of the four sides or the upper side of the upper housing 100. In this embodiment, the electrolyte injection mechanism 300 is mounted on the upper surface of the upper housing 100, the injection section extends vertically, and the lower end of the injection section extends into the electrolyte injection encapsulation cavity. Of course, it is not excluded that in other embodiments, the electrolyte injection mechanism 300 is disposed on one of the four sides of the upper housing 100, the injection section extends horizontally into the electrolyte injection encapsulation cavity, and the end of the injection section located in the electrolyte injection encapsulation cavity bends downward to inject electrolyte into the battery cell from top to bottom.

[0049] A thermocompression sealing mechanism 400 is mounted on the upper housing 100 and can be fixedly installed on the upper housing 100 by bolts. The thermocompression sealing mechanism 400 has two opposing thermocompression sections located within the liquid injection sealing cavity. The two thermocompression sections are configured to approach each other along a first direction for thermocompression sealing of the injected battery cell. After the thermocompression sealing is completed, the two thermocompression sections move away from each other along the first direction to release the thermocompression effect on the battery cell.

[0050] Understandably, after the electrolyte injection process is completed, the thermocompression sealing mechanism 400 operates to thermocompress both sides of the cell's end cap using two thermocompression sections. This prevents the electrolyte inside the cell from easily coming into contact with oxygen when the cell leaves the electrolyte injection sealing cavity and is transferred to the next process, thereby improving the cell's quality. The thermocompression sealing mechanism 400 can be located outside the electrolyte injection sealing cavity, thus reducing the size of the cavity; alternatively, it can be located inside the cavity. Since part of the thermocompression sealing mechanism 400 is located inside the cavity and another part outside, a sealing structure, such as a sealing rubber ring, is required at the connection between the portion of the thermocompression sealing mechanism 400 that penetrates the upper housing 100 and the upper housing 100.

[0051] Since the thermo-pressing encapsulation mechanism 400 is located on the upper housing 100, when the upper housing 100 and the lower housing 200 are connected, the upper end of the battery cell can protrude upwards beyond the second cavity 210 of the lower housing 200 and extend into the first cavity of the upper housing 100, so that the two thermo-pressing parts of the thermo-pressing encapsulation mechanism 400 can apply thermo-pressing action to the end cap of the battery cell.

[0052] Of course, it is not excluded that in other embodiments, the thermocompression packaging mechanism 400 is disposed on the lower housing 200. In this case, when the upper housing 100 and the lower housing 200 are connected, the entire battery cell is located within the second cavity 210 of the lower housing 200. Furthermore, when the thermocompression packaging mechanism 400 is installed on the upper housing 100, if the entire battery cell is located within the second cavity 210 of the lower housing 200, the two thermocompression portions of the thermocompression packaging mechanism 400 can protrude from the first cavity of the upper housing 100 and extend into the second cavity 210 of the lower housing 200.

[0053] In the process of using the integrated processing device based on cell liquid injection and pre-packaging provided in this utility model embodiment, after the cell is placed on the positioning support in the lower housing 200 from top to bottom, the upper housing 100 and the lower housing 200 are driven to connect, so that the upper housing 100 and the lower housing 200 can jointly form a liquid injection and packaging cavity, so as to provide a sealed space to complete the liquid injection and hot-press packaging of the cell, and prevent the inflow of external air from causing the electrolyte to be affected by external oxygen during the liquid injection and hot-press packaging process, thereby ensuring the high manufacturing quality of the cell through oxygen isolation.

[0054] Then, a vacuum pump is used to evacuate the air from the evacuation port 810, removing air from the liquid injection sealing cavity and preventing it from adversely affecting the electrolyte. Next, a gas supply device is used to supply gas to the inlet port 820, allowing inert gas to flow into the liquid injection sealing cavity. This maintains the pressure in the liquid injection sealing cavity at a set value, facilitating the liquid injection process. Furthermore, the inert gas acts as a protective gas, effectively isolating oxygen and preventing the electrolyte from being affected by oxygen.

[0055] Understandably, by performing the work cycle of first evacuating air and then absorbing air a certain number of times, such as 5 to 10 times, the oxygen concentration in the liquid injection sealing cavity is reduced to a preset value, such as below 5 ppm, thereby achieving reliable oxygen isolation and meeting the oxygen isolation requirements of the battery cell during liquid injection.

[0056] Subsequently, the liquid injection mechanism 300 operates to inject a set amount of electrolyte into the battery cell located in the liquid injection packaging cavity. After the liquid injection is completed, the hot-press packaging mechanism 400 operates to bring the two hot-pressing parts closer to each other in the first direction to apply hot-pressing action to the battery cell's end cap, thereby completing the hot-press sealing of the battery cell after liquid injection. This prevents the electrolyte from easily leaking from the battery cell during the transfer process and from easily coming into contact with oxygen.

[0057] This embodiment of the invention, through its structural design, effectively isolates oxygen during cell injection and pre-packaging, preventing the electrolyte from easily coming into contact with oxygen during the injection and thermo-pressing processes, thereby improving the manufacturing quality of the battery cells. Furthermore, the injection and thermo-pressing processes are completed within the same injection and packaging cavity, eliminating the need for cell transfer steps between these processes, thus shortening the total injection and pre-packaging time and improving injection and packaging efficiency, ultimately enhancing battery production efficiency. Simultaneously, the integrated design of the injection mechanism 300, thermo-pressing mechanism 400, upper housing 100, and lower housing 200 reduces the manufacturing cost and space requirements of the integrated processing device for cell injection and pre-packaging.

[0058] In some embodiments, such as Figures 1 to 3 , Figure 6 and Figure 8 As shown, the upper housing 100 is provided with a peeling mechanism 500. The function of the peeling mechanism 500 is to peel off the battery cell to create an injection port on the battery cell, thereby completing the opening of the battery cell and facilitating the injection mechanism 300 to inject electrolyte into the battery cell through the injection port.

[0059] Specifically, the peeling mechanism 500 includes a first driving member 510 and an adsorption assembly 520, wherein the adsorption assembly 520 is partially located inside the liquid injection packaging cavity and partially located outside the liquid injection packaging cavity. Two adsorption assemblies 520 are provided, and the two adsorption assemblies 520 are arranged at a certain interval along a first direction, and are positioned opposite each other. The first driving member 510 is configured to drive the two adsorption assemblies 520 to move along the first direction and approach the battery cell to perform vacuum adsorption on the battery cell, and the first driving member 510 is also configured to drive the two adsorption assemblies 520 to move along the first direction and away from the battery cell to peel off the battery cell, forming a liquid injection port on the battery cell.

[0060] It is understood that the adsorption component 520 can apply a vacuum adsorption effect to the surface of the battery cell. The adsorption component 520 is located below the hot-pressing section. The adsorption component 520 can be a vacuum adsorption plate or a vacuum adsorption rod. The first driving member 510 can be a cylinder, electric cylinder, hydraulic cylinder, or linear module, etc., capable of driving the adsorption component 520 to move linearly. In some examples, the first driving member 510 includes two cylinders, which are respectively connected to the two adsorption components 520, thereby driving the corresponding adsorption components 520 to move along the first direction, so that the two adsorption components 520 move closer or further apart along the first direction. In other examples, the first driving member 510 includes a gripper cylinder, the two output ends of which are respectively fixedly connected to the two adsorption components 520, thereby driving the two adsorption components 520 to move closer or further apart along the first direction.

[0061] In this embodiment, as Figure 6 and Figure 8 As shown, the adsorption assembly 520 includes multiple adsorption rods and multiple adsorption plates arranged at intervals along a second direction. The specific number of adsorption rods can be selected according to actual needs and is not specifically limited here. The length of the adsorption rod extends along a first direction, with one end extending outside the liquid injection packaging cavity and the other end extending inside the liquid injection packaging cavity. A vacuum channel is formed inside the hollow adsorption rod, with a vacuum port 530 formed at one end of the channel. The vacuum port 530 is located outside the liquid injection packaging cavity and can be connected to a vacuum pumping device via a pipe. The other end of the channel forms an adsorption port for vacuum adsorption of the battery cell, located inside the liquid injection packaging cavity. A vacuum nozzle 560 is provided at the adsorption port, which can better fit the surface of the battery cell and also buffer the impact of the adsorption rod on the battery cell. After the adsorption port fits the surface of the battery cell, a vacuum operation allows the adsorption rod to adsorb and fix the battery cell.

[0062] Furthermore, the peeling mechanism 500 also includes a movable seat 540 and a fixed seat 550. The fixed seat 550 is fixed to the outer side of the upper housing 100 by bolts. The first driving member 510 is a dual-axis cylinder and is fixed to the fixed seat 550. The output end of the first driving member 510 is fixedly connected to the movable seat 540. One end of each of the multiple adsorption rods is fixedly connected to the movable seat 540, and the other end of each adsorption rod passes through the guide sleeve provided in the upper housing 100 and extends into the liquid injection and sealing cavity along the first direction. The peeling mechanism 500 with the above structure is provided on both sides of the upper housing 100 along the first direction. When the two first driving members 510 are working, the adsorption rods located on both sides of the battery cell can move closer or further apart along the first direction, thereby completing the liquid injection port forming work of the battery cell.

[0063] Before the electrolyte injection process, the peeling mechanism 500 is activated, causing the two adsorption components 520 located on both sides of the battery cell to move along a first direction under the driving action of the first driving member 510 and contact the surface of the battery cell. Next, a vacuum process is performed to fix the battery cell by the adsorption components 520 through vacuum adsorption. Then, driven by the first driving member 510, the two adsorption components 520 move away from the battery cell along the first direction, thereby peeling the battery cell apart and forming an injection port on the battery cell. This facilitates subsequent electrolyte injection by the electrolyte injection mechanism 300. Because the electrolyte injection encapsulation cavity is filled with inert gas, oxygen can be prevented from entering the battery cell during the manufacturing of the injection port.

[0064] Understandably, in some examples, the adsorption component 520 is disposed within the liquid injection sealing cavity. In this case, the first driving member 510 can be located within the liquid injection sealing cavity, with its output end connected to the adsorption component 520. The wires, air pipes, or oil pipes of the first driving member 510 can extend outside the liquid injection sealing cavity. Simultaneously, the pipe connecting the vacuum port 530 of the adsorption component 520 to the vacuum equipment can extend outside the liquid injection sealing cavity. Alternatively, the first driving member 510 can also be located outside the liquid injection sealing cavity, with its output end extending into the liquid injection sealing cavity and fixedly connected to the adsorption component 520.

[0065] In other examples, a portion of the adsorption component 520 is located outside the liquid injection encapsulation cavity, and another portion of the adsorption component 520 is located inside the liquid injection encapsulation cavity. The first drive 510 is located outside the liquid injection encapsulation cavity, and the output end of the first drive 510 is fixedly connected to the portion of the adsorption component 520 located outside the liquid injection encapsulation cavity.

[0066] Of course, it is not excluded that in other embodiments, the stripping mechanism 500 may be disposed on the lower housing 200. Additionally, in the absence of the stripping mechanism 500, the battery cell with the liquid injection port needs to be placed on the positioning support portion of the lower housing 200.

[0067] In some embodiments, such as Figures 1 to 3 , Figure 6 and Figure 7 As shown, the thermocompression sealing mechanism 400 includes a second driving member 410, a moving member 420, a heating member 440, and a pressing member 460. The moving member 420 is located within the liquid injection sealing cavity. Two moving members 420 are provided, arranged at a certain interval along a first direction and positioned opposite each other. The moving member 420 includes the heating member 440 and the pressing member 460, which are fixed relative to the moving member 420. The heating member 440 is configured to heat the pressing member 460, raising its temperature to a set value so that the pressing member 460 can thermocompress the battery cell. The pressing member 460 is a thermocompression section. The second driving member 410 is configured to drive the two moving members 420 to approach the battery cell along the first direction, so that the pressing member 460 thermocompresses the battery cell.

[0068] It is understood that the shape and material of the movable component 420 and the extrusion component 460 are not specifically limited and can be selected according to the actual situation. The movable component 420 and the extrusion component 460 can be made of metal materials with good thermal conductivity, such as copper and aluminum. The lengths of the movable component 420 and the extrusion component 460 both extend along the second direction. The extrusion component 460 is fixedly disposed on the side of the movable component 420 along the first direction near the center of the liquid injection sealing cavity, that is, the extrusion component 460 is located on the side of the movable component 420 along the first direction near the battery cell. The heating component 440 can be embedded in the movable component 420. The heating component 440 can directly transfer heat to the extrusion component 460, or it can conduct heat to the extrusion component 460 through the movable component 420.

[0069] The second driving member 410 can be a cylinder, hydraulic cylinder, electric cylinder, linear module, or other device capable of driving the moving member 420 to move linearly. In some examples, the second driving member 410 includes two cylinders, each connected to one of the two moving members 420, thereby driving the corresponding moving member 420 to move the heating member 440 and the pressing member 460 along the first direction. This allows the two pressing members 460 to move closer together along the first direction to apply a pressing and heat-sealing effect to the end cap of the battery cell, and also allows the two pressing members 460 to move further apart along the first direction to release the heat-pressing effect on the end cap of the battery cell. In other examples, the second driving member 410 includes a gripper cylinder, with its two output ends fixedly connected to the two moving members 420, thereby driving the two moving members 420 to move the pressing member 460 closer or further apart along the first direction.

[0070] It is understood that the second driving component 410 can be disposed outside the liquid injection sealing cavity and fixed to the outer side of the upper housing 100. The output end of the second driving component 410 extends into the liquid injection sealing cavity along the first direction and is connected to the moving component 420. Alternatively, the second driving component 410 can be disposed inside the liquid injection sealing cavity, with its output end fixedly connected to the moving component 420. In this case, the wire, air pipe, or oil pipe of the second driving component 410 can extend outside the liquid injection sealing cavity. Additionally, the wire of the heating component 440 can also extend outside the liquid injection sealing cavity.

[0071] In this embodiment, the heating element 440 is an electric heating rod. The heating element 440 is detachably connected to the moving element 420, facilitating the disassembly and replacement of the heating element 440. The moving element 420 is provided with a slider, and correspondingly, the upper housing 100 is provided with a guide rail 430. The number of guide rails 430 is not limited to one. The length of the guide rail 430 extends along a first direction, and the guide rail 430 is slidably connected to the slider. This design can improve the movement stability of the moving element 420 and help improve the thermo-pressing sealing accuracy of the extrusion part 460 on the battery cell.

[0072] Of course, it is not excluded that in other embodiments, the heating element 440 may be a heating wire, heating plate or other element capable of heating the extruded part 460.

[0073] Furthermore, such as Figure 6 and Figure 7 As shown, the hot-press packaging mechanism 400 also includes a temperature sensor 450. The extruded part 460 is in contact with the temperature sensor 450, which is configured to detect the temperature of the extruded part 460 in real time.

[0074] It is understood that the temperature sensor 450 can be embedded in the moving part 420 and in contact with the surface of the extruder 460, enabling it to acquire real-time temperature data of the extruder 460; the temperature sensor 450 can also be embedded in the extruder 460. In this embodiment, as... Figure 7 As shown, the extrusion 460 has a T-shaped cross-section. A mounting hole is provided on one side of the extrusion 460 along the second direction, and one end of the temperature probe 450 is fixed to the mounting hole. The wire of the temperature probe 450 can extend outside the liquid injection sealing cavity. There are two temperature probes 450, each corresponding to one of the two extrusions 460.

[0075] The temperature probe 450 is electrically connected to a control device configured in an integrated processing apparatus for cell liquid injection and pre-packaging. The temperature probe 450 transmits real-time temperature data of the extruded component 460 to the control device, which compares the real-time temperature data with a set temperature value to control the operating state of the heating element 440. Before thermopressing, the heating element 440 operates, heating the extruded component 460. During this process, the temperature probe 450 collects the temperature of the extruded component 460 in real time. When the real-time temperature data rises to the set temperature value, the control device stops the heating element 440, thereby controlling the temperature of the extruded component 460 during thermopressing and ensuring optimal thermopressing of the cell. The control device is not limited to a PLC controller, a 51 microcontroller, or a host computer.

[0076] In some embodiments, such as Figures 1 to 4 As shown, the liquid injection mechanism 300 includes a liquid injection needle 310 and a third drive member 320. The liquid injection needle 310 is the liquid injection section, and its length extends vertically. One end of the liquid injection needle 310 extends upwards outside the liquid injection encapsulation cavity, and the other end extends downwards into the liquid injection encapsulation cavity. The third drive member 320 is mounted on the upper housing 100, and its output end is fixedly connected to the liquid injection needle 310. The third drive member 320 is configured to drive the liquid injection needle 310 to move vertically, thereby controlling the height position of the liquid injection needle 310 and enabling it to inject liquid into the battery cell. The third drive member 320 can be a linear drive device such as a cylinder, electric cylinder, hydraulic cylinder, or linear module.

[0077] In this embodiment, the liquid injection mechanism 300 also includes a base 330, which is fixed to the upper surface of the upper housing 100 by bolts. The third driving member 320 is fixed on the base 330 and is located outside the liquid injection and sealing cavity. The third driving member 320 is a linear module, and the liquid injection needle 310 is fixed on the slide of the linear module. When the linear module is running, the liquid injection needle 310 can move up and down with the slide.

[0078] Understandably, to enhance the movement stability of the injection needle 310, both the base 330 and the upper housing 100 are provided with through holes, and guide sleeves are provided at the through holes. The injection needle 310 passes through the guide sleeves, allowing it to rise and fall smoothly under the guidance of the guide sleeves. By providing a third driving member 320, during the injection process, the injection needle 310 moves downward into position under the driving action of the third driving member 320, thereby reducing the height distance between the injection head 311 of the injection needle 310 and the injection port of the battery cell. This allows the electrolyte delivered by the injection needle 310 to accurately enter the battery cell, thus successfully completing the injection process. Of course, it is not ruled out that the injection head 311 can be extended downward into the battery cell through the injection port. In addition, it is not ruled out that in other embodiments, the third driving member 320 may be located inside the injection packaging cavity.

[0079] When the electrolyte injection process is completed and pre-sealing is required, the third drive unit 320 will drive the injection needle 310 upwards to position it, making enough space for the two hot-pressing parts of the hot-pressing sealing mechanism 400 to apply a compression heat-sealing effect to the end cap of the battery cell. The upper end of the injection needle 310 can be connected to the infusion equipment through a pipe, and the infusion equipment can deliver electrolyte to the injection needle 310 during operation.

[0080] Furthermore, such as Figure 4 and Figure 5 As shown, the liquid injection mechanism 300 also includes a fourth driving component 350 and a sealing baffle 360. The sealing baffle 360 ​​is located inside the liquid injection and packaging cavity, and has a liquid extraction channel. One end of the liquid extraction channel forms a liquid extraction inlet 370, and the other end forms a liquid extraction outlet 380. The liquid extraction outlet 380 is connected to a vacuum extraction pipe, which extends outside the liquid injection and packaging cavity and can be connected to a vacuum extraction device.

[0081] Furthermore, the fourth drive unit 350 is fixed to the base 330, and its output end is connected to the sealing baffle 360. The fourth drive unit 350 is configured to drive the sealing baffle 360 ​​to rotate and approach the injection needle 310, so that the liquid inlet 370 is movably connected and communicates with the injection head 311 of the injection needle 310 after injection. The fourth drive unit 350 can be disposed inside or outside the injection sealing cavity.

[0082] Understandably, after the electrolyte injection is completed, the injection needle 310 moves upward under the drive of the third drive member 320 to complete the reset. Next, the sealing baffle 360 ​​rotates under the operation of the fourth drive member 350 and approaches the injection head 311 of the injection needle 310, causing the sealing baffle 360 ​​to contact the injection head 311 and connecting the liquid extraction inlet 370 of the sealing baffle 360 ​​to the injection head 311. At this time, the injection head 311, the liquid extraction channel, and the vacuum extraction pipe are connected in sequence. Then, when the vacuum equipment is running, the injection head 311 is evacuated through the vacuum extraction pipe and the liquid extraction channel to seal and isolate it, preventing residual electrolyte in the injection needle 310 from dripping onto the outer surface of the battery cell and causing contamination.

[0083] When preparing to start the liquid injection process, the fourth drive unit 350 is activated first, causing the sealing baffle 360 ​​to rotate under the driving action of the fourth drive unit 350 and move away from the liquid injection head 311 of the liquid injection needle 310, so as to release the sealing and isolation effect on the liquid injection head 311; then the third drive unit 320 is activated, causing the liquid injection needle 310 to move downward in a straight line under the driving action of the third drive unit 320, so as to inject liquid into the cell.

[0084] In this embodiment, the sealing baffle 360 ​​is L-shaped when viewed horizontally. One end of the sealing baffle 360 ​​is hollow, forming an L-shaped flow channel. One end of the flow channel is a liquid inlet 370, which is open upwards and circular. The other end of the flow channel is a connection port with a pipe connector. The opening of the pipe connector away from the connection port is the liquid outlet 380. The flow channel and the internal pipes of the pipe connector together form a liquid extraction channel. When the sealing baffle 360 ​​contacts the injection head 311, the injection head 311 and the liquid inlet 370 are vertically opposite and connected.

[0085] Furthermore, to achieve a better sealing and isolation effect, the upper surface of the sealing baffle 360 ​​with the liquid inlet 370 is provided with an annular O-ring. The O-ring surrounds the liquid inlet 370, that is, the O-ring is located on the periphery of the liquid inlet 370. When the liquid inlet 370 of the sealing baffle 360 ​​and the injection head 311 are vertically opposite and connected, the outer periphery of the injection head 311 can abut against the O-ring.

[0086] In addition, the vacuuming pipeline includes a first pipeline and a second pipeline. The base 330 is provided with a liquid extraction port 340. One end of the first pipeline is connected to the liquid extraction outlet 380, and the other end of the first pipeline passes through the pipe hole provided in the upper housing 100 and is connected to the liquid extraction port 340. One end of the second pipeline is connected to the liquid extraction port 340, and the other end of the second pipeline is connected to the vacuuming equipment.

[0087] In some examples, the fourth drive unit 350 is a rotary cylinder or motor. Under the action of the fourth drive unit 350, the sealing baffle 360 ​​can rotate a certain angle on the horizontal plane, so that the liquid inlet 370 of the sealing baffle 360 ​​rotates to a position below the liquid injection head 311 and contacts and communicates with the liquid injection head 311.

[0088] In other examples, the fourth drive unit 350 is a rotary cylinder. The fourth drive unit 350 can drive the sealing baffle 360 ​​to move in the vertical direction, and can also drive the sealing baffle 360 ​​to rotate around the rotation axis extending in the vertical direction, so that the liquid inlet 370 of the sealing baffle 360 ​​moves to the position below the liquid injection head 311 and contacts and communicates with the liquid injection head 311.

[0089] In some embodiments, such as Figure 1 , Figure 2 and Figure 9 As shown, the integrated processing device based on cell liquid injection and pre-packaging also includes a lifting mechanism 600. The output end of the lifting mechanism 600 is connected to the lower housing 200, and the lifting mechanism 600 is configured to drive the lower housing 200 to move vertically.

[0090] Understandably, the lower housing 200 can move upward and closer to the upper housing 100 under the drive of the lifting mechanism 600, causing the upper housing 100 and the lower housing 200 to connect and form a liquid injection sealing cavity. Furthermore, the lower housing 200 can move downward and away from the upper housing 100 under the drive of the lifting mechanism 600 to create sufficient space for placing and removing the battery cell onto the positioning support within the lower housing 200. The lifting mechanism 600 can be a linear drive device such as a hydraulic cylinder, electric cylinder, pneumatic cylinder, or linear module.

[0091] Of course, it is not excluded that in other embodiments, the output end of the lifting mechanism 600 is connected to the upper housing 100, and the lifting mechanism 600 is configured to drive the upper housing 100 to move in the vertical direction.

[0092] In some embodiments, such as Figure 1 , Figure 2 and Figure 9 As shown, the integrated processing device based on cell liquid injection and pre-packaging also includes a translation mechanism 700. The output end of the translation mechanism 700 is connected to the lower housing 200, and the translation mechanism 700 is configured to drive the lower housing 200 to move horizontally.

[0093] Understandably, the lower housing 200 can move horizontally and approach the upper housing 100 under the operation of the translation mechanism 700, causing the lower housing 200 and the upper housing 100 to connect and jointly define the liquid injection sealing cavity. Furthermore, the lower housing 200 can move horizontally and away from the upper housing 100 when the translation mechanism 700 is working, to create sufficient space for placing the battery cell onto the positioning support within the lower housing 200. The translation mechanism 700 can be a linear drive device such as a cylinder, electric cylinder, hydraulic cylinder, or linear module. In this case, the cross-sections of the upper housing 100 and the lower housing 200 can be designed as right-angled trapezoids.

[0094] Of course, it is not excluded that in other embodiments, the output end of the translation mechanism 700 is connected to the upper housing 100, and the translation mechanism 700 is configured to drive the upper housing 100 to move in the horizontal direction. In addition, if the lifting mechanism 600 is provided, the translation mechanism 700 can be added. The lifting mechanism 600 and the translation mechanism 700 can be respectively provided corresponding to the upper housing 100 and the lower housing 200, or they can be provided corresponding to either the upper housing 100 or the lower housing 200.

[0095] In this embodiment, as Figure 1 , Figure 2 and Figure 9 As shown, the integrated processing device based on cell liquid injection and pre-packaging also includes a lifting mechanism 600 and a translation mechanism 700. The lifting mechanism 600 is used to drive the lower housing 200 to lift, and the translation mechanism 700 is used to drive the lower housing 200 to move horizontally.

[0096] The upper housing 100 is fixedly installed and is equipped with a support frame 110, which provides support for the upper housing 100. The support frame 110 may include multiple support columns, the upper ends of which are fixedly connected to the upper housing 100. Furthermore, the heat-sealing mechanism 400, the peeling mechanism 500, the air extraction port 810, and the air inlet 820 are all located on the upper housing 100, thus reducing the workload on the lifting mechanism 600 and the translation mechanism 700.

[0097] The lifting mechanism 600 includes a lifting seat 620 and a fifth drive member 610. The translation mechanism 700 includes a support seat 720, a translation seat 730, and a sixth drive member 710. It is understood that the fifth drive member 610 and the sixth drive member 710 can be linear drive devices such as pneumatic cylinders, electric cylinders, hydraulic cylinders, or linear modules. The number of fifth drive members 610 and the number of sixth drive members 710 are not limited to one.

[0098] The sixth driving component 710 is fixed to the support base 720, and its output end is fixedly connected to the translation base 730. The sixth driving component 710 can drive the translation base 730 to move linearly in the horizontal direction, such as the second direction. The translation base 730 and the support base 720 are slidably connected in the horizontal direction. Specifically, a guide rail slider pair is provided between the translation base 730 and the support base 720, so that the translation base 730 can move smoothly in the horizontal direction relative to the support base 720 under the driving action of the sixth driving component 710.

[0099] The lifting seat 620 is positioned above the translation seat 730 and is slidably connected to the translation seat 730 in the vertical direction. Specifically, an optical axis guide sleeve structure is provided between the lifting seat 620 and the translation seat 730, enabling the lifting seat 620 to move stably relative to the translation seat 730 in the vertical direction. The lower housing 200 is fixed to the lifting seat 620. The fifth drive component 610 is fixed to the translation seat 730, and its output end is fixedly connected to the lifting seat 620. The fifth drive component 610 can drive the lifting seat 620 to move linearly in the vertical direction.

[0100] Before starting the electrolyte injection and pre-packaging of the battery cell, the translation mechanism 700 is activated, causing the translation base 730 to move the lifting base 620 and the lower housing 200 horizontally to the loading station, so that the battery cell can be placed on the positioning support inside the lower housing 200. Next, driven by the translation mechanism 700, the translation base 730 moves the lifting base 620, the lower housing 200, and the battery cell in the opposite horizontal direction until they are directly below the upper housing 100. Then, the lifting mechanism 600 is activated, causing the lifting base 620 to move the lower housing 200 and the battery cell upwards until the lower housing 200 and the upper housing 100 are sealed together, placing the battery cell within the electrolyte injection and packaging cavity formed by the lower housing 200 and the upper housing 100. Finally, the evacuation, inert gas introduction, peeling, electrolyte injection, and thermoforming packaging processes can be performed sequentially.

[0101] After completing the electrolyte injection and pre-packaging of the battery cells, the lifting mechanism 600 is activated, causing the lifting seat 620 to move the lower housing 200 and the battery cells into position. Then, the translation mechanism 700 is activated, allowing the translation seat 730 to move the lifting seat 620, the lower housing 200, and the battery cells horizontally, which facilitates the subsequent unloading of battery cells and the loading of the next battery cell.

[0102] Understandably, to ensure the airtightness of the liquid injection and hot-press sealing cavity during liquid injection and hot-press sealing operations, the internal air pressure of the liquid injection and sealing cavity can be controlled to be slightly higher than the external atmospheric pressure to prevent external air from leaking into the liquid injection and sealing cavity. Additionally, to accommodate the liquid injection mechanism 300, the hot-press sealing mechanism 400, and the peeling mechanism 500, openings will be provided on the upper housing 100 or the lower housing 200. In this case, sealing structures such as sealing rings will be provided at the openings to achieve a seal and oxygen barrier.

[0103] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0104] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An integrated processing device based on cell liquid injection and pre-packaging, characterized in that, include: Upper box(100); The lower housing (200) is movable relative to the upper housing (100) in the vertical direction. The lower housing (200) and the upper housing (100) are detachably connected to form a liquid injection and encapsulation cavity. The lower housing (200) or the upper housing (100) is provided with an air extraction port (810) and an air inlet (820) for inert gas injection. Both the air extraction port (810) and the air inlet (820) are connected to the liquid injection and encapsulation cavity. The lower housing (200) is provided with a positioning support for placing and positioning the battery cell. The liquid injection mechanism (300) is disposed on the upper housing (100). The liquid injection mechanism (300) has a liquid injection section that extends into the liquid injection encapsulation cavity for injecting electrolyte into the battery cell. A hot-pressing encapsulation mechanism (400) is disposed on the upper housing (100) or the lower housing (200). The hot-pressing encapsulation mechanism (400) has two opposing hot-pressing parts located within the liquid injection encapsulation cavity and configured to approach each other along a first direction for hot-pressing and sealing the battery cell after liquid injection. The first direction is perpendicular to the up-down direction.

2. The integrated processing apparatus based on cell liquid injection and pre-packaging according to claim 1, characterized in that, A peeling mechanism (500) is provided on the upper housing (100) or the lower housing (200); the peeling mechanism (500) includes a first driving member (510) and an adsorption component (520). The adsorption component (520) is partially located in the liquid injection packaging cavity. Two adsorption components (520) are provided and are spaced apart and arranged opposite to each other along a first direction. The first driving member (510) is configured to drive the two adsorption components (520) to approach the battery cell along the first direction to perform vacuum adsorption on the battery cell, and to drive the two adsorption components (520) to move away from the battery cell along the first direction to peel off the battery cell, so that an injection port is formed on the battery cell.

3. The integrated processing apparatus based on cell liquid injection and pre-packaging according to claim 2, characterized in that, The adsorption assembly (520) includes multiple adsorption rods that extend along a first direction to the outside of the liquid injection packaging cavity. Each adsorption rod is provided with a vacuum channel. One end of the vacuum channel forms a vacuum port (530), and the other end forms an adsorption port for vacuum adsorption of the battery cell.

4. The integrated processing apparatus based on cell liquid injection and pre-packaging according to claim 1, characterized in that, The hot-pressing packaging mechanism (400) includes a second driving member (410), a moving member (420), a heating member (440), and a pressing member (460). The moving member (420) is located inside the liquid injection packaging cavity. There are two moving members (420), which are spaced apart and arranged opposite to each other along a first direction. The moving member (420) is provided with the heating member (440) and the pressing member (460). The heating member (440) is configured to heat the pressing member (460). The pressing member (460) is the hot-pressing part. The second driving member (410) is configured to drive the two moving members (420) to approach the battery cell along the first direction so that the pressing member (460) hot-presses and seals the battery cell.

5. The integrated processing apparatus based on cell liquid injection and pre-packaging according to claim 4, characterized in that, The hot-press packaging mechanism (400) further includes a temperature probe (450), the extruder (460) is in contact with the temperature probe (450), and the temperature probe (450) is configured to detect the temperature of the extruder (460) in real time; and / or, The heating element (440) is an electric heating rod.

6. The integrated processing apparatus based on cell liquid injection and pre-packaging according to claim 1, characterized in that, The liquid injection mechanism (300) includes a liquid injection needle (310) and a third drive member (320). The liquid injection needle (310) is the liquid injection part and extends downward into the liquid injection encapsulation cavity. The third drive member (320) is disposed on the upper housing (100) and is configured to drive the liquid injection needle (310) to move in the up and down direction.

7. The integrated processing apparatus based on cell liquid injection and pre-packaging according to claim 6, characterized in that, The liquid injection mechanism (300) further includes a fourth driving member (350) and a sealing baffle (360). The sealing baffle (360) is located inside the liquid injection packaging cavity. The sealing baffle (360) is provided with a liquid extraction channel. One end of the liquid extraction channel forms a liquid extraction inlet (370), and the other end forms a liquid extraction outlet (380). The liquid extraction outlet (380) is connected to a vacuum pipe, which extends to the outside of the liquid injection packaging cavity. The fourth driving member (350) is configured to drive the sealing baffle (360) to rotate and approach the liquid injection needle (310), so that the liquid extraction inlet (370) is movably connected and communicates with the liquid injection head (311) of the liquid injection needle (310) after liquid injection.

8. The integrated processing apparatus based on cell liquid injection and pre-packaging according to claim 1, characterized in that, It also includes a lifting mechanism (600) configured to drive the upper housing (100) or the lower housing (200) to move in the vertical direction.

9. The integrated processing apparatus based on cell liquid injection and pre-packaging according to claim 1 or 8, characterized in that, It also includes a translation mechanism (700) configured to drive the upper housing (100) or the lower housing (200) to move in a horizontal direction.

10. The integrated processing apparatus based on cell liquid injection and pre-packaging according to claim 1, characterized in that, The connection between the upper housing (100) and the lower housing (200) is provided with an annular sealing ring; and / or, The lower housing (200) is provided with a cell positioning mechanism (900), which is the positioning support part and has an upward-facing cell positioning cavity.

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