Electrolyte injection device

Abstract

An electrolyte injection device (10). The electrolyte injection device (10) comprises first supports (100), a plurality of electrolyte injection cups (200), and sealing plates (300). The plurality of electrolyte injection cups (200) are arranged on the first supports (100) and arranged in a first direction (X); each electrolyte injection cup (200) is provided with a first opening (210); and each sealing plate (300) is arranged on one side of the corresponding first support (100) in a second direction (Y), the sealing plate (300) is provided with a plurality of second openings (310) communicated with the outside, and the sealing plates (300) are movably arranged on the first supports (100) in the first direction (X), such that the second openings (310) are communicated with or staggered from the first openings (210). When the second openings (310) are communicated with the first openings (210), the first openings (210) are exposed, and electrolyte injection needles (800) can inject electrolyte into the electrolyte injection cups (200) by means of the first openings (210), and when the second openings (310) are staggered from the first openings (210), the first openings (210) are blocked and sealed by the sealing plates (300), and the sealing plates (300) can seal the plurality of electrolyte injection cups (200). In this way, the electrolyte injection device (10) has simple structure, and lower preparation difficulty and costs.

Description

Liquid injection device

[0001] Cross Reference to Related Applications

[0002] This application claims priority to Chinese Patent Application CN202421457246.7 entitled "Liquid injection device" filed on June 25, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of batteries, in particular to a liquid injection device. BACKGROUND

[0004] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development.

[0005] In the battery technology, how to reduce the complexity and cost of the manufacturing equipment of the battery is a technical problem to be solved.

[0006] SUMMARY

[0007] The embodiments of the present application provide a liquid injection device which can reduce the complexity and cost of the liquid injection device.

[0008] In a first aspect, the present application provides a liquid injection device, the liquid injection device comprising a first support, a plurality of liquid injection cups and a sealing plate, the plurality of liquid injection cups being arranged on the first support and arranged along a first direction, each liquid injection cup being provided with a first opening; the sealing plate is arranged on one side of the first support along a second direction, the sealing plate being provided with a plurality of second openings which are in communication with the outside, and the sealing plate is movably arranged on the first support along the first direction, so that the second openings are in communication with or staggered with the first openings; the first direction is perpendicular to the second direction.

[0009] In the above technical solution, the liquid injection device comprises a first support, a plurality of liquid injection cups and a sealing plate, the plurality of liquid injection cups are arranged on the first support and arranged along a first direction, so that the first support can play a supporting and fixing role on the liquid injection cups; each liquid injection cup is provided with a first opening, so that the liquid injection needle can inject liquid into the liquid injection cup through the first opening; the sealing plate is arranged on one side of the first support along a second direction, the sealing plate is provided with a plurality of second openings which are in communication with the outside, and the sealing plate is movably arranged on the first support along the first direction, so that the second openings are in communication with or staggered with the first openings; when the second openings are in communication with the first openings, the first openings are exposed, and the liquid injection needle can inject liquid into the liquid injection cup through the first openings; when the second openings are staggered with the first openings, the first openings are blocked and sealed by the sealing plate; the sealing plate can seal the plurality of liquid injection cups, so that the structure of the liquid injection device is simple, and the preparation difficulty and cost are lower.

[0010] In some embodiments of the present application, the liquid injection device further comprises a first fixed plate and a second fixed plate, the first fixed plate is arranged on one side of the first support along the second direction, and the second fixed plate is arranged on the side of the first fixed plate away from the first support along the second direction, and the sealing plate is arranged between the first fixed plate and the second fixed plate.

[0011] In the above technical solution, the liquid injection device further comprises a first fixed plate and a second fixed plate, the first fixed plate is arranged on one side of the first support along the second direction, and the second fixed plate is arranged on the side of the first fixed plate away from the first support along the second direction, and the sealing plate is arranged between the first fixed plate and the second fixed plate, so that when the sealing plate is moved to the second opening staggered with the first opening, the sealing effect of the first opening is better, the possibility of liquid leakage from the first opening in the liquid injection cup is reduced, and subsequent operations such as pressurizing the liquid injection cup are facilitated, so that the liquid injection effect of the liquid injection cup on the battery is better.

[0012] In some embodiments of the present application, the first fixed plate is provided with a third opening, and the second fixed plate is provided with a fourth opening, and along the second direction, the first opening, the third opening and the fourth opening overlap.

[0013] In the above technical solution, the first fixed plate is provided with a third opening, and the second fixed plate is provided with a fourth opening, and along the second direction, the first opening, the third opening and the fourth opening overlap, so that when the second opening is communicated with the first opening, the cavity formed by the liquid injection cup can be communicated with the outside through the first opening, the second opening, the third opening and the fourth opening, thereby facilitating the liquid injection needle to inject liquid into the liquid injection cup.

[0014] In some embodiments of the present application, one of the first fixed plate and the sealing plate is provided with a limiting groove, and the other of the first fixed plate and the sealing plate is provided with a limiting column, and the limiting column is used to move in the limiting groove along the first direction.

[0015] In the above technical solution, one of the first fixed plate and the sealing plate is provided with a limiting groove, and the other of the first fixed plate and the sealing plate is provided with a limiting column, and the limiting column is used to move in the limiting groove along the first direction, so that the first fixed plate can limit the sealing plate in the first direction, reducing the possibility of dislocation of the sealing plate, so that the sealing effect of the sealing plate on the liquid injection cup is better.

[0016] In some embodiments of the present application, a sealing strip is arranged between the first fixed plate and the second fixed plate.

[0017] In the above technical solution, a sealing strip is arranged between the first fixed plate and the second fixed plate, so that the sealing effect between the first fixed plate and the second fixed plate is better, and the sealing effect on the liquid injection cup is better, which is conducive to subsequent operations such as pressurizing the liquid injection cup, so that the liquid injection effect of the liquid injection cup on the battery is better.

[0018] In some embodiments of the present application, the liquid injection device comprises a first fixing member, which is connected with the first fixing plate and the first support respectively.

[0019] In the above technical solution, the liquid injection device comprises a first fixing member, which is connected with the first fixing plate and the first support respectively, so that the connection between the first fixing plate and the first support is more secure, and the stability of the liquid injection device is better.

[0020] In some embodiments of the present application, the liquid injection device comprises a second fixing member, which is connected with the first fixing plate and the second fixing plate respectively.

[0021] In the above technical solution, the liquid injection device comprises a second fixing member, which is connected with the first fixing plate and the second fixing plate respectively, so that the connection between the first fixing plate and the second fixing plate is more secure, and the stability of the liquid injection device is better.

[0022] In some embodiments of the present application, the side of the sealing plate away from the liquid injection cup is provided with a groove, and the groove is spaced from the second opening in the first direction.

[0023] In the above technical solution, the side of the sealing plate away from the liquid injection cup is provided with a groove, and the groove is spaced from the second opening in the first direction, so that when the second opening is staggered with the first opening, the liquid missed by the liquid injection needle can fall into the groove, reducing the possibility of liquid flowing to other parts of the liquid injection device, thereby reducing the possibility of contamination of the liquid injection device and improving the safety of the liquid injection device.

[0024] In some embodiments of the present application, the liquid injection device comprises a first driving mechanism, which is arranged on the first support and is used to drive the sealing plate to move in the first direction.

[0025] In the above technical solution, the liquid injection device comprises a first driving mechanism, which is arranged on the first support and is used to drive the sealing plate to move in the first direction, so that the sealing of multiple liquid injection cups can be realized by one first driving mechanism. Compared with the current liquid injection device in which each liquid injection cup is sealed by one driving mechanism, the structure of the liquid injection device in the present application is simpler and the cost is lower. Moreover, due to the reduction in the number of driving mechanisms, the number of internal lines and pipelines of the liquid injection device can also be reduced, increasing the maintenance space of the liquid injection device and reducing the maintenance difficulty and cost of the liquid injection device.

[0026] In some embodiments of the present application, the liquid injection device comprises a connecting pipe, one end of which is in communication with the liquid injection cup, and the other end of which is used to communicate with the positive pressure mechanism.

[0027] In the technical solution, the liquid injection device comprises a connecting pipe, one end of the connecting pipe is communicated with the liquid injection cup, and the other end of the connecting pipe is used for being communicated with the positive pressure mechanism, so that the positive pressure mechanism can provide the positive pressure to the liquid injection cup through the connecting pipe, and the liquid in the liquid injection cup is injected into the battery.

[0028] In some embodiments of the present application, the liquid injection device comprises a valve, which is arranged on the first support and is used for controlling opening and closing of the channel between the connecting pipe and the liquid injection cup.

[0029] In the technical solution, the liquid injection device comprises a valve, which is arranged on the first support and is used for controlling opening and closing of the channel between the connecting pipe and the liquid injection cup, so that the liquid in the liquid injection cup is injected into the battery or stopped from being injected into the battery.

[0030] In some embodiments of the present application, the liquid injection device comprises a second support and a liquid injection needle, the second support is arranged in the second direction and is spaced apart from the first support, and the liquid injection needle is arranged on the second support and is used for injecting the liquid into the liquid injection cup through the first opening.

[0031] In the technical solution, the liquid injection device comprises a second support and a liquid injection needle, the second support is arranged in the second direction and is spaced apart from the first support, and the liquid injection needle is arranged on the second support and is used for injecting the liquid into the liquid injection cup through the first opening, so that the liquid injection cup can inject the liquid into the battery. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without paying creative labor on the basis of the drawings.

[0033] FIG. 1 is a perspective structural schematic view of a liquid injection device provided by some embodiments of the present application;

[0034] FIG. 2 is a structural schematic view of one view of the liquid injection device provided by some embodiments of the present application;

[0035] FIG. 3 is a sectional structural schematic view of the liquid injection device along A-A in FIG. 2;

[0036] FIG. 4 is a partial enlarged structural schematic view of B in the liquid injection device in FIG. 3;

[0037] FIG. 5 is a perspective schematic view of part of the structure of the liquid injection device provided by some embodiments of the present application;

[0038] FIG. 6 is a partial enlarged structural schematic view of C in the liquid injection device in FIG. 5;

[0039] FIG. 7 is a perspective view of a liquid injection device according to some embodiments of the present application.

[0040] FIG. 10 is a perspective view of a liquid injection device according to some embodiments of the present application.

[0041] DETAILED DESCRIPTION

[0042] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0043] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing the specific embodiments of the present application and are not intended to limit the present application; the terms “include” and “have” and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover not exclusive inclusion.

[0044] The terms “first”, “second”, etc. in the specification and claims of the present application or in the above description of drawings are used to distinguish different objects and are not used to describe a specific order or primary and secondary relationship.

[0045] In the present application, “embodiments” means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily all refer to the same embodiments, nor is each embodiment mutually exclusive or alternative to the other embodiments.

[0046] “Multiple” appearing in the present application means more than two (including two).

[0047] In the present application, the liquid injection device is used for the injection of the electrolyte of the battery monomer. The battery monomer includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator film. The battery monomer mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet through the electrolyte to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, and the positive electrode active material layer is coated on the surface of the positive electrode current collector, and the current collector without the positive electrode active material layer serves as the positive electrode tab. Taking a lithium ion battery as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector, and the current collector without the negative electrode active material layer serves as the negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc. In order to ensure that the fuse does not occur when passing a large current, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the separator film can be PP (polypropylene) or PE (polyethylene) or the like.

[0048] The battery has the outstanding advantages of high energy density, small environmental pollution, large power density, long service life, wide application range, small self-discharge coefficient, etc., and is an important part of the development of new energy today. With the development of the new energy industry, the battery gradually develops towards large-scale and integration. The number of battery monomers in the battery is also increasing.

[0049] In order to improve the preparation efficiency of the battery monomer, a plurality of battery monomers are usually injected at the same time. Therefore, the liquid injection device generally includes a plurality of liquid injection cups, each of which corresponds to a battery monomer for injection. During the injection process, the liquid injection cup needs to be sealed. At present, a sealing member is arranged for each liquid injection cup to seal, which causes the structure of the liquid injection device to be complex, the cost to be high, and the maintenance difficulty to be great.

[0050] Based on the above considerations, the present application provides a liquid injection device, which includes a first support, a plurality of liquid injection cups and a sealing plate. The plurality of liquid injection cups are arranged on the first support and arranged along a first direction, and each of the liquid injection cups is provided with a first opening. The sealing plate is arranged on one side of the first support along a second direction, and the sealing plate is provided with a plurality of second openings communicating with the outside. The sealing plate is movably arranged on the first support along the first direction, so that the second openings communicate with or stagger with the first openings.

[0051] In the technical scheme of the present application, the liquid injection device comprises a first support, a plurality of liquid injection cups and a sealing plate. The plurality of liquid injection cups are arranged on the first support and are arranged along a first direction, so that the first support can support and fix the liquid injection cups. Each liquid injection cup is provided with a first opening, so that a liquid injection needle can inject liquid into the liquid injection cup through the first opening. The sealing plate is arranged on one side of the first support along a second direction. The sealing plate is provided with a plurality of second openings which are in communication with the outside. The sealing plate is movably arranged on the first support along the first direction, so that the second openings are in communication with or staggered with the first openings. When the second openings are in communication with the first openings, the first openings are exposed, and the liquid injection needle can inject liquid into the liquid injection cup through the first openings. When the second openings are staggered with the first openings, the first openings are blocked and sealed by the sealing plate. The sealing plate can seal the plurality of liquid injection cups, so that the structure of the liquid injection device is simple, and the preparation difficulty and cost are lower.

[0052] Please refer to FIG. 1 to FIG. 4. FIG. 1 is a perspective structural schematic diagram of a liquid injection device provided by some embodiments of the present application. FIG. 2 is a structural schematic diagram of the liquid injection device from one perspective provided by some embodiments of the present application. FIG. 3 is a sectional structural schematic diagram of the liquid injection device along A-A in FIG. 2. FIG. 4 is a partial enlarged structural schematic diagram of B in FIG. 3.

[0053] Some embodiments of the present application provide a liquid injection device 10. The liquid injection device 10 comprises a first support 100, a plurality of liquid injection cups 200 and a sealing plate 300. The plurality of liquid injection cups 200 are arranged on the first support 100 and are arranged along a first direction X. Each liquid injection cup 200 is provided with a first opening 210. The sealing plate 300 is arranged on one side of the first support 100 along a second direction Y. The sealing plate 300 is provided with a plurality of second openings 310 which are in communication with the outside. The sealing plate 300 is movably arranged on the first support 100 along the first direction X, so that the second openings 310 are in communication with or staggered with the first openings 210. The first direction X is perpendicular to the second direction Y.

[0054] The injection device 10 comprises the first support 100, the plurality of injection cups 200 and the sealing plate 300. The plurality of injection cups 200 are arranged on the first support 100 and arranged along the first direction X. The first support 100 can support and fix the injection cups 200. Each injection cup 200 is provided with the first opening 210. The injection needle 800 can inject liquid into the injection cup 200 through the first opening 210. The sealing plate 300 is arranged on one side of the first support 100 along the second direction Y. The sealing plate 300 is provided with a plurality of second openings 310 which are in communication with the outside. The sealing plate 300 is movably arranged on the first support 100 along the first direction X. The second openings 310 are in communication with or staggered with the first openings 210. When the second openings 310 are in communication with the first openings 210, the first openings 210 are exposed. The injection needle 800 can inject liquid into the injection cup 200 through the first opening 210. When the second openings 310 are staggered with the first openings 210, the first openings 210 are blocked and sealed by the sealing plate 300. The sealing plate 300 can seal the plurality of injection cups 200. The structure of the injection device 10 is simple. The preparation difficulty and cost are lower.

[0055] In some embodiments, the injection device 10 is used to inject electrolyte into a battery. The electrolyte comprises a solvent and an electrically conductive salt. For example, a lithium battery. The solvent of the electrolyte of the lithium battery comprises ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate and diethyl carbonate. The electrically conductive salt of the electrolyte of the lithium battery comprises lithium hexafluorophosphate. For example, a lithium-manganese battery. The solvent of the electrolyte of the lithium-manganese battery comprises propylene carbonate, ethylene glycol dimethyl ether. The electrically conductive salt of the electrolyte of the lithium-manganese battery comprises lithium perchlorate or lithium triflate.

[0056] In some embodiments, the injection device 10 further comprises a first fixed plate 400 and a second fixed plate 500. The first fixed plate 400 is arranged on one side of the first support 100 along the second direction Y. The second fixed plate 500 is arranged on one side of the first fixed plate 400 away from the first support 100 along the second direction Y. The sealing plate 300 is arranged between the first fixed plate 400 and the second fixed plate 500.

[0057] The injection device 10 further comprises the first fixed plate 400 and the second fixed plate 500. The first fixed plate 400 is arranged on one side of the first support 100 along the second direction Y. The second fixed plate 500 is arranged on one side of the first fixed plate 400 away from the first support 100 along the second direction Y. The sealing plate 300 is arranged between the first fixed plate 400 and the second fixed plate 500. When the sealing plate 300 moves to stagger the second openings 310 with the first openings 210, the sealing effect of the first openings 210 is better. The possibility of liquid leakage from the first openings 210 in the injection cups 200 is reduced. It is beneficial for subsequent operations such as pressurizing the injection cups 200. The injection effect of the injection cups 200 on the battery is better.

[0058] In some embodiments, the first fixing plate 400 and the second fixing plate 500 are both flat plate-shaped.

[0059] In some other embodiments, the first fixing plate 400 can be a hollow structure with one end open, and the second fixing plate 500 can be a flat plate-shaped structure, which covers the open side of the first fixing plate 400, so that the first fixing plate 400 and the second fixing plate 500 together define a receiving cavity, and the sealing plate 300 is arranged in the receiving cavity. The first fixing plate 400 and the second fixing plate 500 can also be hollow structures with one side open, and the open side of the second fixing plate 500 covers the open side of the first fixing plate 400.

[0060] In some embodiments, the first fixing plate 400 is provided with a third opening 410, and the second fixing plate 500 is provided with a fourth opening 510. Along the second direction Y, the first opening 210, the third opening 410, and the fourth opening 510 overlap.

[0061] By providing the first fixing plate 400 with a third opening 410 and the second fixing plate 500 with a fourth opening 510, and along the second direction Y, the first opening 210, the third opening 410, and the fourth opening 510 overlap, when the second opening 310 is in communication with the first opening 210, the cavity formed by the liquid injection cup 200 can be in communication with the outside through the first opening 210, the second opening 310, the third opening 410, and the fourth opening 510, thereby facilitating the liquid injection needle 800 to inject liquid into the liquid injection cup 200.

[0062] In some embodiments, the liquid injection cup 200 is arranged through the third opening 410.

[0063] By arranging the liquid injection cup 200 through the third opening 410, the first opening 210 of the liquid injection cup 200 can be exposed outside the first fixing plate 400, so that the liquid directly falls into the first opening 210 after passing through the fourth opening 510 and the second opening 310, which can reduce the number of openings through which the liquid passes, thereby reducing the possibility of liquid leakage.

[0064] In some embodiments, the first opening 210, the second opening 310, the third opening 410, and the fourth opening 510 can be circular openings.

[0065] In some other embodiments, the first opening 210, the second opening 310, the third opening 410, and the fourth opening 510 can also be elliptical openings or rectangular openings, etc.

[0066] Please refer to FIG. 5 and FIG. 6 together, FIG. 5 is a partial structure of the liquid injection device according to some embodiments of the present application; and FIG. 6 is a local enlarged structure of the liquid injection device at C in FIG. 5.

[0067] In some embodiments, one of the first fixing plate 400 and the sealing plate 300 is provided with the limiting groove 320, and the other of the first fixing plate 400 and the sealing plate 300 is provided with the limiting column 420, which is used to move in the first direction X in the limiting groove 320.

[0068] By making one of the first fixing plate 400 and the sealing plate 300 provided with the limiting groove 320, and the other of the first fixing plate 400 and the sealing plate 300 provided with the limiting column 420, which is used to move in the first direction X in the limiting groove 320, the first fixing plate 400 can limit the sealing plate 300 in the first direction X, reducing the possibility of the sealing plate 300 moving out of position, so that the sealing effect of the sealing plate 300 on the liquid injection cup 200 is better.

[0069] In some embodiments, the sealing plate 300 is provided with the limiting groove 320, and the first fixing plate 400 is provided with the limiting column 420. In the first direction X, the limiting groove 320 is spaced apart from the second opening 310.

[0070] In some embodiments, the limiting groove 320 is a strip-shaped groove, and the limiting groove 320 extends in the first direction X, so that the limiting column 420 can move in the first direction X in the limiting groove 320.

[0071] In other embodiments, one of the second fixing plate 500 and the sealing plate 300 can also be provided with the limiting groove 320, and the other of the second fixing plate 500 and the sealing plate 300 is provided with the limiting column 420, which is used to move in the first direction X in the limiting groove 320.

[0072] In some embodiments, the first fixing plate 400 and the second fixing plate 500 are provided with the sealing strip 430 therebetween.

[0073] By making the first fixing plate 400 and the second fixing plate 500 provided with the sealing strip 430 therebetween, the sealing effect between the first fixing plate 400 and the second fixing plate 500 can be better, and thus the sealing effect on the liquid injection cup 200 is better, which is conducive to subsequent operations such as pressurizing the liquid injection cup 200, so that the liquid injection effect of the liquid injection cup 200 on the battery is better.

[0074] In some embodiments, the sealing strip 430 comprises a plurality of first sealing strips arranged on the side of the first fixed plate 400 facing the second fixed plate 500 and spaced along the circumference of the first fixed plate 400, and a plurality of second sealing strips arranged on the side of the second fixed plate 500 facing the first fixed plate 400 and spaced along the circumference of the second fixed plate 500, the plurality of first sealing strips and the plurality of second sealing strips being staggered, so that the sealing effect between the first fixed plate 400 and the second fixed plate 500 is better.

[0075] In other embodiments, the sealing strip 430 can be an annular sealing strip arranged on the side of the first fixed plate 400 facing the second fixed plate 500 or on the side of the second fixed plate 500 facing the first fixed plate 400.

[0076] In some embodiments, the sealing strip 430 can be made of rubber, silicone or the like, so that the sealing effect between the first fixed plate 400 and the second fixed plate 500 is better.

[0077] In some embodiments, the liquid injection device 10 comprises a first fixing member 440 connected with the first fixed plate 400 and the first support 100 respectively.

[0078] By making the liquid injection device 10 comprise a first fixing member 440 connected with the first fixed plate 400 and the first support 100 respectively, the connection between the first fixed plate 400 and the first support 100 is more secure, and the stability of the liquid injection device 10 is better.

[0079] In some embodiments, the first fixing member 440 can be a screw, so that the connection between the first fixed plate 400 and the first support 100 is more secure.

[0080] In other embodiments, the first fixing member 440 can also be a rivet, adhesive or the like.

[0081] In some embodiments, the liquid injection device 10 comprises a second fixing member 450 connected with the first fixed plate 400 and the second fixed plate 500 respectively.

[0082] By making the liquid injection device 10 comprise a second fixing member 450 connected with the first fixed plate 400 and the second fixed plate 500 respectively, the connection between the first fixed plate 400 and the second fixed plate 500 is more secure, and the stability of the liquid injection device 10 is better.

[0083] In some embodiments, the second fixing member 450 can be a screw, so that the connection between the first fixed plate 400 and the second fixed plate 500 is more secure.

[0084] In other embodiments, the second fixing member 450 can also be a rivet, adhesive, or the like.

[0085] In some embodiments, the side of the sealing plate 300 facing away from the liquid injection cup is provided with a groove 330, and along the first direction X, the groove 330 is spaced apart from the second opening 310.

[0086] In the above technical solution, the side of the sealing plate 300 facing away from the liquid injection cup 200 is provided with a groove 330, and along the first direction X, the groove 330 is spaced apart from the second opening 310, so that when the second opening 310 is staggered with the first opening 210, the liquid missed by the liquid injection needle can fall into the groove 330, reducing the possibility of liquid flowing to other parts of the liquid injection device 10, thereby reducing the possibility of the liquid injection device 10 being contaminated and improving the safety of the liquid injection device 10.

[0087] In some embodiments, the groove 330 can be a circular groove.

[0088] In other embodiments, the groove 330 can also be an elliptical groove or a rectangular groove, etc.

[0089] In some embodiments, along the first direction X, the distance between the center of the second opening 310 and the center of the groove 330 is D1, and when the limiting column 420 is located at both ends of the limiting groove 320, the distance between the centers is D2, and D1=D2 is satisfied.

[0090] By making the distance D1 between the center of the second opening 310 and the center of the groove 330 along the first direction X, and the distance D2 between the centers when the limiting column 420 is located at both ends of the limiting groove 320 satisfy D1=D2, when the limiting column 420 is located at one end of the limiting groove 320, the second opening 310 is in communication with the first opening 210, the third opening 410, and the fourth opening 510, and the liquid injection needle can inject liquid into the liquid injection cup 200 through the first opening 210, the second opening 310, the third opening 410, and the fourth opening 510; when the limiting column 420 is located at the other end of the limiting groove 320, the second opening 310 is staggered with the first opening 210, the sealing plate 300 seals the first opening 210, and along the second direction Y, the projection of the groove 330 overlaps with the projection of the fourth opening 510 of the second fixed plate 500, so that the liquid missed by the liquid injection needle can fall into the groove 330 through the fourth opening 510, thereby reducing the possibility of liquid flowing to other parts of the liquid injection device 10, thereby reducing the possibility of the liquid injection device 10 being contaminated and improving the safety of the liquid injection device 10.

[0091] In some embodiments, the liquid injection device 10 comprises a plurality of first supports 100 arranged along the first direction X, each of the first supports 100 is provided with a plurality of liquid injection cups 200. Each of the first supports 100 is provided with a sealing plate 300, a first fixing plate 400 and a second fixing plate 500. Two adjacent sealing plates 300 are connected by a connecting piece 340.

[0092] By connecting two adjacent sealing plates 300 by the connecting piece 340, when one of the sealing plates 300 is forced to move, the other sealing plates 300 will also move, so that all the liquid injection cups 200 of the liquid injection device 10 can be opened or sealed at the same time.

[0093] In some embodiments, the liquid injection device 10 comprises a first driving mechanism 600 arranged on the first support 100, the first driving mechanism 600 is used to drive the sealing plate 300 to move along the first direction X.

[0094] By arranging the first driving mechanism 600 on the first support 100, the first driving mechanism 600 is used to drive the sealing plate 300 to move along the first direction X, and by driving the sealing plate 300 by the first driving mechanism 600, the sealing of the plurality of liquid injection cups 200 can be realized. Compared with the current liquid injection device 10 in which each liquid injection cup 200 is sealed by a driving mechanism, the structure of the liquid injection device 10 in the present application is simpler and the cost is lower. In addition, due to the reduction in the number of driving mechanisms, the number of internal lines and pipelines of the liquid injection device 10 can also be reduced, which increases the maintenance space of the liquid injection device 10 and reduces the maintenance difficulty and cost of the liquid injection device 10.

[0095] In some embodiments, the first driving mechanism 600 comprises a pneumatic cylinder, and the driving end of the pneumatic cylinder is connected with the sealing plate 300.

[0096] In some other embodiments, the first driving mechanism 600 can also comprise a motor.

[0097] In some other embodiments, the first support 100 can also be provided with a sliding rail and a sliding block (not shown in the figure), the sliding block is movably arranged on the sliding rail along the first direction X, the sliding block is connected with the sealing plate 300, and the first driving mechanism 600 is connected with the sliding block or the sealing plate 300. By arranging the sliding rail and the sliding block, the movement process of the sealing plate 300 can be more stable.

[0098] In some embodiments, the liquid injection device 10 comprises a connecting pipe 220, one end of the connecting pipe 220 is communicated with the liquid injection cup 200, and the other end of the connecting pipe 220 is used to communicate with a positive pressure mechanism (not shown in the figure).

[0099] By making the liquid injection device 10 include the connecting pipe 220, one end of the connecting pipe 220 communicates with the liquid injection cup 200, and the other end of the connecting pipe 220 is used to communicate with the positive pressure mechanism, so that the positive pressure mechanism can provide positive pressure to the liquid injection cup 200 through the connecting pipe 220, so that the liquid in the liquid injection cup 200 is injected into the battery.

[0100] In some embodiments, the liquid injection device 10 includes the valve 110, which is arranged on the first support 100 and is used to control the opening and closing of the channel between the connecting pipe 220 and the liquid injection cup 200.

[0101] By making the liquid injection device 10 include the valve 110, which is arranged on the first support 100 and is used to control the opening and closing of the channel between the connecting pipe 220 and the liquid injection cup 200, the liquid in the liquid injection cup 200 can be injected into the battery or stopped.

[0102] In some embodiments, the valve 110 can be a cylinder valve.

[0103] In some embodiments, the liquid injection device 10 includes a plurality of valves 110, which are arranged one-to-one with a plurality of liquid injection cups 200.

[0104] By making the plurality of valves 110 arranged one-to-one with the plurality of liquid injection cups 200, the liquid injection control of each liquid injection cup 200 can be realized through the valve 110.

[0105] Please refer to FIG. 7, which is a perspective structural schematic diagram of the liquid injection device provided in some embodiments of the present application.

[0106] In some embodiments, the liquid injection device 10 includes the second support 700 and the liquid injection needle 800, the second support 700 is arranged along the second direction Y and is spaced apart from the first support 100, and the liquid injection needle 800 is arranged on the second support 700 and is used to inject liquid into the liquid injection cup 200 through the first opening 210.

[0107] By making the liquid injection device 10 include the second support 700 and the liquid injection needle 800, the second support 700 is arranged along the second direction Y and is spaced apart from the first support 100, and the liquid injection needle 800 is arranged on the second support 700 and is used to inject liquid into the liquid injection cup 200 through the first opening 210, so that the liquid injection cup 200 can inject liquid into the battery.

[0108] In some embodiments, the liquid injection device 10 includes a plurality of liquid injection needles 800, which are arranged along the first direction X and are spaced apart. By arranging a plurality of liquid injection needles 800, a plurality of liquid injection cups 200 can be injected at the same time, and the working efficiency of the liquid injection device 10 can be improved.

[0109] In some embodiments, the distance between two adjacent injection needles 800 is multiple times the distance between two adjacent injection cups 200. This can improve the working efficiency of the injection device 10.

[0110] For example, as shown in Figure 7, in some embodiments of this application, the injection device 10 includes 12 injection cups 200 and 4 injection needles 800. After the 4 injection needles 800 inject liquid into 4 of the injection cups 200, it is only necessary to move the interval between two adjacent injection cups 200 to inject liquid into the other 4 injection cups 200. Moving the interval between two adjacent injection cups 200 again allows for the injection of the remaining 4 injection cups 200. The distance that the injection needles 800 need to move is relatively short, thus improving the working efficiency of the injection device 10.

[0111] Referring to Figures 1 to 7, some embodiments of this application provide a liquid injection device 10. The liquid injection device 10 includes a plurality of first supports 100 arranged along a first direction X. Each first support 100 is provided with a plurality of injection cups 200 arranged along the first direction X. Each first support 100 is provided with a sealing plate 300, a first fixing plate 400, and a second fixing plate 500. Each injection cup 200 is provided with a first opening 210. The sealing plate 300 is disposed on one side of the first support 100 along a second direction Y. The sealing plate 300 is provided with a plurality of second openings 310 communicating with the outside. The sealing plate 300 is movably disposed on the first support 100 along the first direction X, such that the second openings 310 communicate with or intersect with the first openings 210. The first fixing plate 400 is disposed on one side of the first support 100 along the second direction Y. The second fixing plate 500 is disposed on the side of the first fixing plate 400 facing away from the first support 100 along the second direction Y. The sealing plate 300 is disposed between the first fixing plate 400 and the second fixing plate 500. The first fixing plate 400 is provided with a third opening 410, and the second fixing plate 500 is provided with a fourth opening 510. Along the second direction Y, the first opening 210, the third opening 410, and the fourth opening 510 overlap.

[0112] In some embodiments, each first support 100 is provided with a connecting tube 220, one end of which is connected to the injection cup 200, and the other end of which is connected to the positive pressure mechanism. A valve 110 is provided for each injection cup 200, and the valve 110 is located on the first support 100 to control the opening and closing of the channel between the connecting tube 220 and the injection cup 200.

[0113] In some embodiments, the injection device 10 includes a first drive mechanism 600, which is disposed on the first support 100 and is used to drive the sealing plate 300 to move along the first direction X.

[0114] In some embodiments, the sealing plate 300 is provided with a limiting groove 320, and the first fixing plate 400 is provided with a limiting column 420, which is used to move in the first direction X in the limiting groove 320.

[0115] In some embodiments, a sealing strip 430 is arranged between the first fixing plate 400 and the second fixing plate 500. The sealing strip 430 includes a plurality of first sealing strips (not shown in the figure) arranged on the side of the first fixing plate 400 facing the second fixing plate 500 and spaced along the circumference of the first fixing plate 400, and a plurality of second sealing strips (not shown in the figure) arranged on the side of the second fixing plate 500 facing the first fixing plate 400 and spaced along the circumference of the second fixing plate 500, and the plurality of first sealing strips and the plurality of second sealing strips are staggered.

[0116] In some embodiments, the liquid injection device 10 includes a first fixing member 440 connected with the first fixing plate 400 and the first support 100 respectively, and a second fixing member 450 connected with the first fixing plate 400 and the second fixing plate 500 respectively.

[0117] In some embodiments, the side of the sealing plate 300 facing away from the liquid cup is provided with a groove 330, which is spaced from the second opening 310 along the first direction X.

[0118] In some embodiments, the liquid injection device 10 includes a second support 700 spaced from the first support 100 along the second direction Y, and a plurality of liquid injection needles 800 spaced on the second support 700 along the first direction X, and the liquid injection needle 800 is used to inject liquid into the liquid cup 200 through the first opening 210.

[0119] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0120] The above is only the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid injection device, wherein, include: First support; Multiple injection cups are disposed on the first support and arranged along a first direction, and each injection cup is provided with a first opening; A sealing plate is disposed on one side of the first bracket along the second direction. The sealing plate is provided with a plurality of second openings communicating with the outside. The sealing plate is movably disposed on the first bracket along the first direction, such that the second openings communicate with or intersect with the first openings. The first direction is perpendicular to the second direction.

2. The liquid injection device according to claim 1, wherein, The liquid injection device further includes a first fixing plate and a second fixing plate. The first fixing plate is disposed on one side of the first support along the second direction, and the second fixing plate is disposed on the side of the first fixing plate opposite to the first support along the second direction. The sealing plate is disposed between the first fixing plate and the second fixing plate.

3. The liquid injection device according to claim 2, wherein, The first fixing plate is provided with a third opening, and the second fixing plate is provided with a fourth opening. Along the second direction, the first opening, the third opening, and the fourth opening overlap.

4. The liquid injection device according to claim 2 or 3, wherein, One of the first fixing plate and the sealing plate is provided with a limiting groove, and the other of the first fixing plate and the sealing plate is provided with a limiting post, the limiting post being used to move within the limiting groove along the first direction.

5. The liquid injection device according to any one of claims 2-4, wherein, A sealing strip is provided between the first fixing plate and the second fixing plate.

6. The liquid injection device according to any one of claims 2-5, wherein, The liquid injection device includes a first fixing member, which is connected to the first fixing plate and the first bracket respectively.

7. The liquid injection device according to any one of claims 2-6, wherein, The liquid injection device includes a second fixing member, which is connected to the first fixing plate and the second fixing plate respectively.

8. The liquid injection device according to any one of claims 1-7, wherein, The sealing plate has a groove on the side facing away from the injection cup, and the groove is spaced apart from the second opening along the first direction.

9. The liquid injection device according to any one of claims 1-8, wherein, The liquid injection device includes a first driving mechanism, which is disposed on the first support and is used to drive the sealing plate to move along the first direction.

10. The liquid injection device according to any one of claims 1-9, wherein, The liquid injection device includes a connecting tube, one end of which is connected to the liquid injection cup, and the other end of which is connected to a positive pressure mechanism.

11. The liquid injection device according to claim 10, wherein, The injection device includes a valve, which is mounted on the first bracket and is used to control the opening and closing of the channel between the connecting tube and the injection cup.

12. The liquid injection device according to any one of claims 1-11, wherein, The injection device includes a second support and an injection needle. The second support and the first support are spaced apart along the second direction. The injection needle is disposed on the second support and is used to inject liquid into the injection cup through the first opening.

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