Battery liquid preparation device and battery manufacturing equipment

Abstract

The embodiment of the utility model provides a battery liquid preparation device and battery manufacturing equipment. The battery liquid preparation device comprises a liquid preparation cup mechanism and a movable liquid preparation mechanism, the liquid preparation cup mechanism comprises a sealing assembly and a plurality of liquid preparation cups, each liquid preparation cup is provided with a cup opening used for receiving electrolyte, and the sealing assembly is used for sealing or exposing the cup opening; the movable liquid preparation mechanism comprises a position adjusting unit and a liquid injection unit, the position adjusting unit is used for driving the liquid injection unit to move among the multiple liquid preparation cups, the liquid injection unit comprises a liquid injection needle, and the liquid injection needle is used for being inserted into the cup opening so as to inject electrolyte into the liquid preparation cups. According to the technical scheme, the number of the needle valves is reduced, and cost and maintenance difficulty are reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery liquid reserve device and battery manufacturing equipment. Background Art

[0002] Energy conservation and emission reduction are 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 advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] During the manufacturing process of batteries, liquid injection is an essential process in battery production. Specifically, it refers to first evacuating the formed lithium battery shell and then filling it with electrolyte, so that the electrolyte completely wraps the battery core. The effect of liquid injection directly affects the performance of the battery. The liquid injection station needs to prepare liquid in the liquid preparation device in advance before injecting liquid into the battery cell. However, in the existing liquid preparation device, each liquid preparation cup needs to be equipped with a needle valve, and the liquid preparation device has a complex structure and is difficult to maintain. Utility Model Content

[0004] The present application provides a battery liquid preparation device and battery manufacturing equipment, which reduce the number of needle valves, lower the cost and maintenance difficulty.

[0005] This application is achieved through the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a battery reserve liquid device, which includes a reserve liquid cup mechanism and a mobile reserve liquid mechanism. The reserve liquid cup mechanism includes a sealing assembly and multiple reserve liquid cups. The reserve liquid cup has a cup mouth for receiving electrolyte, and the sealing assembly is used to close or expose the cup mouth; the mobile reserve liquid mechanism includes a position adjustment unit and an injection unit. The position adjustment unit is used to drive the injection unit to move between multiple reserve liquid cups. The injection unit includes an injection needle, which is used to be inserted into the cup mouth to inject electrolyte into the reserve liquid cup.

[0007] In this solution, a sealing component is provided at the mouth of the liquid preparation cup, and the sealing component can close or open the mouth of the cup. The position adjustment unit is provided so that the injection needle can move between multiple liquid preparation cups. After the injection needle moves to the corresponding liquid preparation cup, the sealing component exposes the mouth of the liquid preparation cup. The injection needle is directly connected to the liquid preparation cup, and electrolyte preparation of multiple liquid preparation cups can be realized. Compared with the prior art in which the injection needle is stationary and each liquid preparation cup needs to be equipped with an injection needle valve, the use of a movable injection needle reduces the number of injection needles, and correspondingly reduces the cost of the device. The reduction in the number of injection needles also reduces the difficulty of maintenance of the device.

[0008] According to some embodiments of the present application, the position adjustment unit includes a frame and a first drive component; the first drive component is disposed on the frame, the first drive component is connected to the injection unit, and the first drive component is used to drive the injection unit to move along a first direction, and the first direction is the distribution direction of multiple preparation liquid cups.

[0009] In the above scheme, when multiple liquid preparation cups are distributed along the first direction, through the setting of the first driving component, the first driving component can drive the injection unit to move in the first direction, thereby realizing the function of the injection needle in the injection unit to prepare liquid in the multiple liquid preparation cups in turn.

[0010] According to some embodiments of the present application, the position adjustment unit also includes a second drive component, which is arranged between the first drive component and the frame, and the second drive component is used to drive the first drive component to move along a second direction, and the second direction is perpendicular to the first direction.

[0011] In the above scheme, through the setting of the second driving component, the second driving component can drive the first driving component to move along the second direction, so as to realize the position adjustment of the injection needle in the first direction and the second direction. The position movement range of the injection needle is wider, so that the injection needle can not only complete the giving way after the preparation cup is filled with liquid, but also can meet the injection function when multiple rows of preparation cups are distributed, and the scope of use is wider.

[0012] According to some embodiments of the present application, a plurality of liquid preparation cups are distributed in a rectangular array.

[0013] In the above scheme, multiple reserve liquid cups are distributed in a rectangular array, and through the cooperation of the first drive assembly and the second drive assembly, full coverage of multiple reserve liquid cups in multiple rows of reserve liquid cups can be achieved, and the structure is more compact. In addition, multiple reserve liquid cups are distributed in a rectangular array, and the spatial layout of the device is more reasonable, occupying less space, reducing the length of multiple reserve liquid cups in the first direction, and correspondingly reducing the movement stroke of the first drive assembly in the first direction, so that the first drive assembly or the second drive assembly drives the injection unit to move more stably and reliably.

[0014] According to some embodiments of the present application, the injection unit also includes a lifting assembly, which is used to drive the injection needle to move along a third direction so that the injection needle can be inserted into the cup mouth or separated from the cup mouth, and the third direction, the second direction and the first direction are perpendicular to each other.

[0015] In the above scheme, by setting the lifting component, the injection needle can be driven to move in the third direction, so that when the preparation liquid cup is stationary, the injection needle can be inserted downward into the cup mouth of the preparation liquid cup to realize the injection function of the preparation liquid cup, and the structure of the preparation liquid cup mechanism is simpler.

[0016] According to some embodiments of the present application, the lifting assembly includes a lifting plate, a lifting drive, an injection rack and a third guide portion, the lifting plate is connected to the first drive assembly; the lifting drive portion is installed on the lifting plate, the injection rack is used for installing the injection needle, and the lifting drive portion is used to drive the injection rack to move along the third direction; the third guide portion is arranged on the lifting plate, and the third guide portion is used to guide the injection rack to move along the third direction.

[0017] In the above scheme, through the setting of the injection rack, the injection needle can be installed and fixed on the injection rack. Under the guiding action of the third guide part, the lifting drive member drives the injection rack to lift and lower stably along the third direction. The lifting stability of the injection rack is higher, thereby realizing precise injection of the preparation cup by the injection needle.

[0018] According to some embodiments of the present application, there are multiple injection needles, and the multiple injection needles are spaced apart and distributed along the first direction on the injection rack.

[0019] In the above scheme, the number of injection needles is set to be multiple, and the multiple injection needles can inject liquid into multiple liquid preparation cups at the same time, which saves injection time and improves injection efficiency.

[0020] According to some embodiments of the present application, along the first direction, the distance between two adjacent injection needles is an integer multiple of the distance between two adjacent preparation cups.

[0021] In the above scheme, by adopting the spacing between two adjacent injection needles as an integer multiple of the spacing between two adjacent preparation cups, after the simultaneous injection of multiple preparation cups is completed using multiple injection needles, the position adjustment unit drives the injection unit to move along the first direction to the next preparation cup to be injected with liquid. Compared with the case where the spacing between two adjacent injection needles is equal to the spacing between two adjacent preparation cups, the injection needle only needs to move the distance of one preparation cup before the injection unit can perform the next injection. The moving distance of the injection unit during a single position adjustment in the first direction is shorter, and the injection efficiency is higher.

[0022] According to some embodiments of the present application, the sealing assembly includes a liquid preparation rack and a sealing plate, the liquid preparation rack is used to carry multiple liquid preparation cups; the sealing plate is movably disposed on the liquid preparation rack, and the sealing plate has a first position and a second position. When the sealing plate is in the first position, the sealing plate closes the cup openings of the multiple liquid preparation cups, and when the sealing plate is in the second position, the sealing plate is used to expose the cup openings of the multiple liquid preparation cups.

[0023] In the above scheme, by movably setting the sealing plate on the liquid preparation rack, the sealing plate can be moved to close or open the cup openings of multiple liquid preparation cups. When the liquid preparation cup needs to be filled, the sealing plate moves to the second position to expose the cup opening of the liquid preparation cup, which is convenient for the injection needle to be inserted into the liquid preparation cup for injection. After the liquid preparation cup is filled, the sealing plate moves to the first position, and the sealing plate seals the cup opening of the liquid preparation cup, so that the sealing of the cup openings of multiple liquid preparation cups is faster and more convenient.

[0024] According to some embodiments of the present application, the sealing assembly also includes a plurality of seals, which are arranged on the sealing plate at intervals along a first direction, and the seals are used to close the cup mouth; a plurality of through holes are opened on the sealing plate along the first direction, and the through holes are used to communicate with the cup mouth; along the first direction, the plurality of seals and the plurality of through holes are alternately distributed on the sealing plate, and the spacing between two adjacent through holes, the spacing between two adjacent seals, and the spacing between two adjacent preparation liquid cups are all equal; wherein, the sealing plate is movably arranged on the preparation liquid rack along the first direction, and the first direction is the distribution direction of the plurality of preparation liquid cups.

[0025] In the above scheme, by alternately setting a plurality of seals and a plurality of through holes on the sealing plate, and the spacing between two adjacent through holes, the spacing between two adjacent seals and the spacing between two adjacent liquid preparation cups are all equal, when the sealing plate is driven to translate along the first direction, the sealing plate only needs to move the position of one liquid preparation cup to achieve the sealing plate closing or exposing the cup openings of multiple liquid preparation cups, the sealing plate has a short movement stroke and high control accuracy. In addition, the sealing plate does not need to be separated from the liquid preparation rack, and the sealing plate has high installation stability.

[0026] According to some embodiments of the present application, the sealing assembly further includes a fourth driving member, which is installed on the liquid preparation rack and is used to drive the sealing plate to move along the first direction.

[0027] In the above scheme, the fourth driving member can drive the sealing plate to move along the first direction on the liquid preparation rack, and there is no need for manual driving of the sealing plate. Compared with manual driving of the sealing plate, the movement accuracy is higher, the degree of automation is higher, and the workload of the staff is reduced.

[0028] According to some embodiments of the present application, the sealing assembly further includes a fourth guide portion, which extends along the first direction and is disposed on the liquid preparation rack, and the fourth guide portion is slidably matched with the sealing plate to guide the sealing plate to move along the first direction.

[0029] In the above scheme, by arranging a fourth guide portion on the liquid preparation rack, the fourth guide portion can provide a guiding function for the sealing plate, so that the sealing plate can only move along the first direction on the liquid preparation rack, the movement accuracy of the sealing plate is higher, and the sealing plate will not be offset on the liquid preparation rack, so that the sealing plate can more accurately close or open the mouth of the liquid preparation cup.

[0030] According to some embodiments of the present application, a limiting portion is provided on the liquid preparation rack at a side away from the fourth driving member, and the limiting portion is used to limit the travel of the sealing plate in the first direction.

[0031] In the above scheme, by arranging a limiting portion on the liquid preparation rack, the limiting portion can limit the moving stroke of the sealing plate to prevent the sealing plate from exceeding a predetermined range during movement, thereby reducing the risk of collision between the sealing plate and other components of the device.

[0032] In a second aspect, an embodiment of the present application further provides a battery manufacturing device, the battery manufacturing device comprising the battery liquid reserve device of any of the aforementioned embodiments.

[0033] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the structure of a battery liquid reserve device provided in some embodiments of the present application;

[0036] Figure 2 A front view of a battery liquid reserve device provided in some embodiments of the present application;

[0037] Figure 3 A schematic diagram of the structure of a mobile liquid reserve mechanism in a battery liquid reserve device provided in some embodiments of the present application;

[0038] Figure 4 A schematic diagram of the structure of a liquid reserve cup mechanism in a battery liquid reserve device provided in some embodiments of the present application;

[0039] Figure 5 for Figure 4 Front view of .

[0040] Icons: 100-battery liquid preparation device; 10-liquid preparation cup mechanism; 11-sealing assembly; 111-liquid preparation rack; 112-sealing plate; 1121-through hole; 113-sealing member; 114-fourth driving member; 115-fourth guide portion; 116-limiting portion; 12-liquid preparation cup; 121-cup mouth; 20-mobile liquid preparation mechanism; 21-position adjustment unit; 211-frame; 212-first driving assembly; 2121-first safety device; 2 ...fourth driving member; 115-fourth guide portion; 116-limiting portion; 12-fourth driving member; 121-fourth guide portion; 121-fourth driving member; 121-fourth driving member; 121-fourth driving member; 121-fourth driving member; 121-fourth driving member; 121-fourth driving member; 121-fourth driving member; 121-fourth driving member; 121-fourth driving member; 121-fourth driving member; 121-fourth driving member; 121-fourth driving member; 121-fourth driving member; 121-fourth driving member; 121-fourth driving member; 121-fourth driving member; Mounting rack; 2122-first driving member; 213-second driving assembly; 2131-second mounting rack; 2132-second nut seat; 2133-second driving member; 22-liquid injection unit; 221-liquid injection needle; 222-lifting assembly; 2221-lifting plate; 2222-lifting driving member; 2223-liquid injection rack; 2224-third guide portion; 30-liquid filling valve; X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0043] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0046] The term "multiple" as used in the present application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0047] In the present application, the battery may include a lithium-ion battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery or a magnesium-ion battery, etc., which is not limited in the embodiments of the present application. The battery may be cylindrical, flat, rectangular or other shapes, etc., which is not limited in the embodiments of the present application.

[0048] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0049] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as the positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode collector. The negative electrode collector not coated with the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. The negative electrode collector not coated with the negative electrode active material layer serves as the negative electrode tab. The negative electrode current collector may be made of copper, and the negative electrode active material may be carbon or silicon. In order to ensure that a large current can pass without melting, the positive electrode tabs are multiple and stacked together, and the negative electrode tabs are multiple and stacked together. The material of the separator may be PP (polypropylene) or PE (polyethylene).

[0050] The battery cell also includes a packaging film and a shell. The packaging film is coated on the outside of the electrode assembly, and the shell encapsulates the electrode assembly coated with the packaging film to form a battery cell. The packaging film can be a Mylar film, and the shell can be an aluminum shell. After the electrode assembly is formed, the Mylar film and the shell are encapsulated through the Mylar wrapping process and the shelling process. Among them, the Mylar film plays the role of sealing and protecting the electrode assembly, and the Mylar film can effectively insulate the electrode assembly and the shell from each other to avoid internal short circuits in the battery cell. The shell plays a protective role.

[0051] At present, during the manufacturing process of batteries, liquid injection is an indispensable process in battery production. It specifically refers to first evacuating the formed lithium battery shell and then filling it with electrolyte, so that the electrolyte completely wraps the battery core. The effect of liquid injection directly affects the performance of the battery. Generally, a lithium battery liquid injection station is used to inject electrolyte into the battery cell. The lithium battery liquid injection station includes a liquid preparation station and a liquid injection station. The liquid preparation station has multiple liquid preparation cups. The liquid preparation cup is used to temporarily store electrolyte. After the liquid preparation cup completes the electrolyte preparation, the electrolyte in the liquid preparation cup is pumped into the battery cell to be injected through the liquid filling valve on the liquid preparation cup.

[0052] The liquid preparation device in the prior art includes multiple liquid preparation cups, and each liquid preparation cup needs to be installed with a needle valve for sealing. The multiple needle valves of the multiple liquid preparation cups share the same bus, and the injection needle is connected to the inlet of the bus, that is, the injection needle is connected to the multiple liquid preparation cups through the bus, and the bus plays the role of connecting the multiple liquid preparation cups in parallel. When the needle valve on the liquid preparation cup is opened, the injection needle is connected to the inlet of the bus, and the injection needle injects electrolyte into the bus port. The electrolyte is injected into multiple liquid preparation cups at the same time through the bus to complete the liquid preparation of the liquid preparation cup. However, since each liquid preparation cup is provided with a needle valve, the number of needle valves is large, and the needle valves need to be regularly maintained and replaced, resulting in greater difficulty in maintenance of the workstation. In addition, multiple liquid preparation cups share the same bus, which has the problem of low injection accuracy, and a high defect rate caused by more liquid or less liquid.

[0053] In view of this, in order to solve the problem of a large number of needle valves and great maintenance difficulty in a battery reserve liquid device, some embodiments of the present application provide a battery reserve liquid device, the battery reserve liquid device comprising a reserve liquid cup mechanism and a mobile reserve liquid mechanism, the reserve liquid cup mechanism comprising a sealing assembly and a plurality of reserve liquid cups, the reserve liquid cup having a cup mouth for receiving electrolyte, the sealing assembly being used to close or expose the cup mouth; the mobile reserve liquid mechanism comprising a position adjustment unit and an injection unit, the position adjustment unit being used to drive the injection unit to move between a plurality of reserve liquid cups, the injection unit comprising an injection needle, the injection needle being used to be inserted into the cup mouth to inject electrolyte into the reserve liquid cup.

[0054] In such a battery reserve liquid device, the injection needle can move between multiple reserve liquid cups. After the injection needle moves to the corresponding reserve liquid cup, the sealing assembly exposes the cup mouth of the reserve liquid cup, and the injection needle is directly connected to the reserve liquid cup, so that electrolyte reserve liquid for multiple reserve liquid cups can be realized. Compared with the prior art in which the injection needle is stationary and each reserve liquid cup needs to be equipped with an injection needle valve, the use of a movable injection needle reduces the number of injection needles and correspondingly reduces the cost of the device. The reduction in the number of injection needles also reduces the difficulty of maintenance of the device accordingly.

[0055] The present application embodiment provides a battery liquid reserve device, please refer to Figure 1 , Figure 2 and Figure 3 The battery liquid preparation device 100 includes a liquid preparation cup mechanism 10 and a mobile liquid preparation mechanism 20. The liquid preparation cup mechanism 10 includes a sealing assembly 11 and multiple liquid preparation cups 12. The liquid preparation cup 12 has a cup mouth 121 for receiving electrolyte. The sealing assembly 11 is used to close or expose the cup mouth 121; the mobile liquid preparation mechanism 20 includes a position adjustment unit 21 and a liquid injection unit 22. The position adjustment unit 21 is used to drive the liquid injection unit 22 to move between multiple liquid preparation cups 12. The liquid injection unit 22 includes an injection needle 221. The injection needle 221 is used to be inserted into the cup mouth 121 to inject electrolyte into the liquid preparation cup 12.

[0056] The liquid preparation cup 12 refers to a container capable of receiving electrolyte, and the cup mouth 121 of the liquid preparation cup 12 refers to an opening structure provided at the top of the liquid preparation cup 12, and the cup mouth 121 can be used for the injection needle 221 to be inserted. Of course, the insertion of the injection needle 221 into the cup mouth 121 of the liquid preparation cup 12 can be divided into a variety of situations. The liquid preparation cup 12 can be stationary, and the injection needle 221 can move downward and be inserted into the cup mouth 121 of the liquid preparation cup 12. It can also be that the injection needle 221 is stationary, and the liquid preparation cup 12 moves upward to allow the injection needle 221 to be inserted into the cup mouth 121. Alternatively, the liquid preparation cup 12 and the injection needle 221 can both move toward or away from each other, so that the injection needle 221 is inserted into the cup mouth 121, depending on the actual situation.

[0057] The liquid preparation cup 12 is provided with a liquid injection pipe for connecting with the battery cell to be injected. The liquid preparation cup 12 is provided with a liquid filling valve 30. The liquid filling valve 30 can inject the electrolyte in the liquid preparation cup 12 into the battery cell to be injected through the liquid injection pipe under positive pressure to complete the electrolyte injection process of the battery cell.

[0058] The specific number of the plurality of liquid preparation cups 12 can be determined according to actual conditions. In addition, the plurality of liquid preparation cups 12 can be distributed in a single row, or in multiple rows, depending on the number of the liquid preparation cups 12. The distribution direction of each row of liquid preparation cups 12 can be the first direction X.

[0059] The sealing assembly 11 refers to a sealing component that can seal the cup opening 121 of the reserve liquid cup 12. The sealing assembly 11 can seal the cup openings 121 of multiple reserve liquid cups 12 at the same time or expose the cup openings 121. Of course, the cup openings 121 of some reserve liquid cups 12 can also be sealed or opened at the same time. After the sealing assembly 11 seals the cup opening 121 of the reserve liquid cup 12, it is convenient to isolate the reserve liquid cup 12 from the atmospheric pressure. Under the action of the liquid filling valve 30, the reserve liquid cup 12 can be filled into the battery cell.

[0060] The position adjustment unit 21 refers to a position adjustment device that can drive the injection needle 221 to move between multiple reserve liquid cups 12. The position adjustment unit 21 can drive the injection needle 221 to move above the corresponding reserve liquid cup 12, and then inject electrolyte into the reserve liquid cup 12 through the injection needle 221 of the injection unit 22. The number of injection needles 221 can be one or more.

[0061] In the case where there is only one injection needle 221, the position adjustment unit 21 can drive the injection needle 221 to move, and use the injection needle 221 to complete the electrolyte preparation work of multiple preparation cups 12 in sequence. In the case where there are multiple injection needles 221, the position adjustment unit 21 can drive multiple injection needles 221 to simultaneously inject liquid into multiple preparation cups 12. After one round of injection is completed, the position adjustment unit 21 drives multiple injection needles 221 to move to the top of the uninjected preparation cup 12 to perform a new round of injection of the preparation cup 12 until the electrolyte preparation of all preparation cups 12 is completed. The number of preparation cups 12 is not less than the number of injection needles 221, and the number of preparation cups 12 can be an integer multiple of the number of multiple injection needles 221. For example, when the number of preparation cups 12 is twelve, the number of injection needles 221 can be two, three, or four, etc.

[0062] The mobile liquid preparation mechanism 20 may also include a liquid injection pump and a liquid injection pipeline. The liquid injection needle 221 is located at the end of the liquid injection pipeline. The liquid injection needle 221 is connected to the liquid injection pipeline. A needle valve is provided on the liquid injection needle 221. The needle valve can control the opening and closing of the passage of the liquid injection needle 221. The needle valve can be a solenoid valve, and the needle valve is controlled by the control system of the liquid preparation device. When the needle valve is opened, the liquid injection pump can transport the electrolyte to the liquid injection needle 221 through the liquid injection pipeline, and inject the electrolyte into the liquid preparation cup 12 through the liquid injection needle 221, so as to complete the liquid preparation of the electrolyte in the liquid preparation cup 12.

[0063] In this solution, a sealing component 11 is provided at the cup mouth 121 of the reserve liquid cup 12, and the sealing component 11 can close or open the cup mouth 121. The position adjustment unit 21 is provided so that the injection needle 221 can move between multiple reserve liquid cups 12. After the injection needle 221 moves to the corresponding reserve liquid cup 12, the sealing component 11 exposes the cup mouth 121 of the reserve liquid cup 12. The injection needle 221 is directly connected to the reserve liquid cup 12, and electrolyte preparation of multiple reserve liquid cups 12 can be realized. Compared with the prior art in which the injection needle is stationary and each reserve liquid cup needs to be equipped with an injection needle 221 valve, the use of a movable injection needle 221 reduces the number of injection needles 221, and correspondingly reduces the cost of the device. The reduction in the number of injection needles 221 also correspondingly reduces the difficulty of maintenance of the device.

[0064] According to some embodiments of this application, please refer to Figure 1 , Figure 2 and Figure 3 The position adjustment unit 21 includes a frame 211 and a first driving assembly 212; the first driving assembly 212 is disposed on the frame 211, and the first driving assembly 212 is connected to the injection unit 22. The first driving assembly 212 is used to drive the injection unit 22 to move along a first direction X, and the first direction X is the distribution direction of multiple preparation cups 12.

[0065] The first driving assembly 212 refers to a linear moving module capable of driving the injection unit 22 to move in the first direction X. The first driving assembly 212 may be a cylinder, a hydraulic cylinder, an electric push rod, a screw nut pair mechanism or a linear motor module.

[0066] Optionally, the first drive assembly 212 is a screw nut pair mechanism, and the first drive assembly 212 may include a first mounting frame 2121, a first driving member 2122, a first screw rod, a first nut seat and a first guide portion. The first mounting frame 2121 is mounted on the frame 211, the first driving member 2122 is mounted on the first mounting frame 2121, the first screw rod extends along the first direction X and is arranged on the first mounting frame 2121, the first nut seat is threadedly matched with the first screw rod, the first guide portion is arranged on the first mounting frame 2121 and extends along the first direction X, the first nut seat is slidably matched with the first guide portion, and the injection unit 22 is arranged on the first nut seat. Under the driving action of the first driving member 2122, the first driving member 2122 drives the first screw rod to rotate, thereby driving the first nut seat to move on the first screw rod along the first direction X. The first driving member 2122 may be a servo motor, and the first guide portion may be a guide rail.

[0067] When multiple liquid preparation cups 12 are distributed along the first direction X, the first driving component 212 can drive the injection unit 22 to move in the first direction X through the setting of the first driving component 212, thereby realizing the function of the injection needle 221 in the injection unit 22 to prepare liquid for multiple liquid preparation cups 12 in turn.

[0068] According to some embodiments of this application, please refer to Figure 3 The position adjustment unit 21 also includes a second driving component 213, which is arranged between the first driving component 212 and the frame 211, and is used to drive the first driving component 212 to move along a second direction Y, and the second direction Y is perpendicular to the first direction X.

[0069] The second driving component 213 refers to a linear motion module that can drive the first driving component 212 to move in the second direction Y. The second driving component 213 can be a cylinder, a hydraulic cylinder, an electric push rod, a screw nut pair mechanism or a linear motor module.

[0070] In the case where the first driving assembly 212 is a screw-nut pair mechanism, the second driving assembly 213 may also be a screw-nut pair mechanism.

[0071] Taking the second driving assembly 213 as a screw nut pair mechanism as an example, the number of the second driving assembly 213 can be two groups, and the two groups of second driving assemblies 213 are respectively connected to the two ends of the first direction X of the first mounting frame 2121.

[0072] The second driving assembly 213 may include a second mounting frame 2131, a second driving member 2133, a second screw rod, a second nut seat 2132 and a second guide portion. The second mounting frame 2131 is mounted on the frame 211, the second driving member 2133 is mounted on the second mounting frame 2131, the second screw rod is extended along the second direction Y and arranged on the second mounting frame 2131, the second nut seat 2132 is threadedly matched with the second screw rod, the second guide portion is extended along the second direction Y and arranged on the second mounting frame 2131, the second nut seat 2132 is slidably matched with the second guide portion, and the first mounting frame 2121 is fixedly connected with the second nut seat 2132. Under the driving action of the second driving member 2133, the second driving member 2133 drives the second screw rod to rotate, thereby driving the second nut seat 2132 to move along the second direction Y on the second screw rod, and the second nut seat 2132 moves, thereby driving the first driving assembly 212 to move along the second direction Y. The second driving member 2133 may be a servo motor, and the second guide portion may be a guide rail.

[0073] By setting the second driving component 213, the second driving component 213 can drive the first driving component 212 to move along the second direction Y, so as to realize the position adjustment of the injection needle 221 in the first direction X and the second direction Y. The position movement range of the injection needle 221 is wider, so that the injection needle 221 can not only complete the giving way of the preparation cup 12 after the preparation cup 12 is filled, but also can meet the injection function when multiple rows of preparation cups 12 are distributed, and the scope of use is wider.

[0074] According to some embodiments of this application, please refer to Figure 1 , a plurality of liquid preparation cups 12 are distributed in a rectangular array.

[0075] The plurality of liquid preparation cups 12 are distributed in a rectangular array, which means that the plurality of liquid preparation cups 12 can be arranged in multiple columns, and the liquid preparation cups 12 in two adjacent columns are spaced apart along the second direction Y, and the plurality of liquid preparation cups 12 in each column of liquid preparation cups 12 are spaced apart along the first direction X. In this embodiment, the plurality of liquid preparation cups 12 are distributed in two columns, and the plurality of liquid preparation cups 12 in each column of liquid preparation cups 12 are spaced apart along the first direction X. The two columns of liquid preparation cups 12 are spaced apart along the second direction Y.

[0076] The plurality of liquid preparation cups 12 are distributed in a rectangular array, and the first drive assembly 212 and the second drive assembly 213 cooperate to achieve full coverage of the plurality of liquid preparation cups 12 in the plurality of rows of liquid preparation cups 12, and the structure is more compact. Moreover, the plurality of liquid preparation cups 12 are distributed in a rectangular array, and the spatial layout of the device is more reasonable, and the occupied space is smaller, and the length of the plurality of liquid preparation cups 12 in the first direction X is reduced, and the moving stroke of the first drive assembly 212 in the first direction X is correspondingly reduced, so that the first drive assembly 212 or the second drive assembly 213 drives the injection unit 22 to move more stably and reliably.

[0077] According to some embodiments of this application, please refer to Figure 3 The injection unit 22 also includes a lifting component 222, which is used to drive the injection needle 221 to move along the third direction Z so that the injection needle 221 can be inserted into the cup mouth 121 or separated from the cup mouth 121. The third direction Z, the second direction Y and the first direction X are perpendicular to each other.

[0078] The lifting assembly 222 refers to a lifting mechanism that can drive the injection needle 221 to move in the third direction Z, so that the injection needle 221 can approach the liquid preparation cup 12 and be inserted into the cup mouth 121 to achieve the injection function of the liquid preparation cup 12. When the injection needle 221 completes the injection of the liquid preparation cup 12, the lifting assembly 222 drives the injection needle 221 to separate from the cup mouth 121.

[0079] The lifting assembly 222 may be a cylinder, a hydraulic cylinder, an electric push rod, a screw nut mechanism or a linear motor module, etc. The specific structure of the lifting assembly may be determined according to actual conditions. The third direction Z may be a vertical direction.

[0080] By setting the lifting component 222, the injection needle 221 can be driven to move in the third direction Z, so that when the preparation cup 12 is stationary, the injection needle 221 can be inserted downward into the cup mouth 121 of the preparation cup 12 to realize the injection function of the preparation cup 12, and the structure of the preparation cup mechanism 10 is simpler.

[0081] According to some embodiments of this application, please refer to Figure 3 The lifting assembly 222 includes a lifting plate 2221, a lifting drive member 2222, an injection rack 2223 and a third guide portion 2224. The lifting plate 2221 is connected to the first drive assembly 212; the lifting drive member 2222 is installed on the lifting plate 2221, the injection rack 2223 is used for installing the injection needle 221, and the lifting drive member 2222 is used to drive the injection rack 2223 to move along the third direction Z; the third guide portion 2224 is arranged on the lifting plate 2221, and the third guide portion 2224 is used to guide the injection rack 2223 to move along the third direction Z.

[0082] The lifting plate 2221 refers to a base that provides a bearing function for the lifting component 222 . The lifting plate 2221 may be a frame or a plate structure. The lifting plate 2221 is connected to the first driving component 212 .

[0083] The lifting drive member 2222 may be a lifting cylinder, and the number of the lifting cylinders may be one or more. Optionally, the number of the lifting cylinders is two, and the two lifting cylinders are spaced apart and distributed on the lifting plate 2221 along the first direction X.

[0084] The injection rack 2223 refers to a frame structure that provides an installation function for the injection needle 221. The driving end of the lifting drive member 2222 is connected to the injection rack 2223, and the lifting drive member 2222 drives the injection rack 2223 to move along the third direction Z relative to the lifting plate 2221.

[0085] The third guide part 2224 refers to a guide component that can provide a guiding function during the lifting process of the injection rack 2223. The third guide part 2224 may include a guide rod, and a matching part is correspondingly provided on the injection rack 2223. The matching part may be a guide sleeve or a linear bearing. The guide rod cooperates with the guide sleeve or the linear bearing for guidance.

[0086] In this embodiment, there are two guide rods, and the matching part is a linear bearing. The linear bearing cooperates with the guide rod to guide the liquid injection rack 2223 to rise and fall stably along the third direction Z.

[0087] By setting the injection rack 2223, the injection needle 221 can be installed and fixed on the injection rack 2223. Under the guiding action of the third guide part 2224, the lifting drive member 2222 drives the injection rack 2223 to lift and lower stably along the third direction Z. The lifting stability of the injection rack 2223 is higher, thereby realizing the precise injection of the preparation cup 12 by the injection needle 221.

[0088] According to some embodiments of the present application, there are multiple injection needles 221, and the multiple injection needles 221 are spaced apart along the first direction X on the injection rack 2223.

[0089] The number of injection needles 221 can be two, three or four, etc. In the present embodiment, the number of injection needles 221 is three. In addition, the distribution spacing of the injection needles 221 on the injection rack 2223 can be determined according to the actual situation. For example, when the number of injection needles 221 is three, the spacing between two adjacent injection needles 221 can be equal to the spacing between two adjacent preparation cups 12. Of course, the spacing between two adjacent injection needles 221 can also be greater than the spacing between two adjacent preparation cups 12. For example, the spacing between two adjacent injection needles 221 can be twice, three times or four times the spacing between two adjacent preparation cups 12, etc., depending on the number of preparation cups 12 and the actual situation.

[0090] The number of injection needles 221 is set to be multiple, and multiple injection needles 221 can inject liquid into multiple liquid preparation cups 12 at the same time, which saves injection time and improves injection efficiency.

[0091] According to some embodiments of the present application, along the first direction X, the distance between two adjacent injection needles 221 is an integer multiple of the distance between two adjacent preparation cups 12 .

[0092] The distance between two adjacent injection needles 221 is an integer multiple of the distance between two adjacent preparation cups 12 , and may be any integer multiple such as two, three or four times.

[0093] Optionally, the number of the reserve liquid cups 12 in each row of the reserve liquid cups 12 is twelve, that is, the twelve reserve liquid cups are sequentially distributed along the first direction X. When the number of the injection needles 221 is three, the distance between two adjacent injection needles 221 may be four times the distance between two adjacent reserve liquid cups 12. When the injection unit 22 completes one injection, it only needs to move one by one three times along the first direction X to complete the injection of the electrolyte in all the reserve liquid cups 12 in the row of the reserve liquid cups 12, and the injection efficiency is high.

[0094] By adopting the spacing between two adjacent injection needles 221 as an integer multiple of the spacing between two adjacent preparation cups 12, after the multiple preparation cups are simultaneously injected with liquid using multiple injection needles 221, the position adjustment unit 21 drives the injection unit 22 to move along the first direction X to the next preparation cup to be injected with liquid. Compared with the case where the spacing between two adjacent injection needles 221 is equal to the spacing between two adjacent preparation cups 12, the injection needle 221 only needs to move the distance of one preparation cup before the injection unit 22 can perform the next injection. The moving distance of the injection unit 22 during a single position adjustment in the first direction X is shorter, and the injection efficiency is higher.

[0095] According to some embodiments of this application, please refer to Figure 4 and Figure 5 The sealing assembly 11 includes a liquid preparation rack 111 and a sealing plate 112. The liquid preparation rack 111 is used to carry multiple liquid preparation cups 12; the sealing plate 112 is movably arranged on the liquid preparation rack 111, and the sealing plate 112 has a first position and a second position. When the sealing plate 112 is in the first position, the sealing plate 112 closes the cup openings 121 of the multiple liquid preparation cups 12. When the sealing plate 112 is in the second position, the sealing plate 112 is used to expose the cup openings 121 of the multiple liquid preparation cups 12.

[0096] The liquid preparation rack 111 refers to a frame structure capable of carrying a plurality of liquid preparation cups 12. The liquid preparation rack 111 may be a frame structure. The liquid preparation rack 111 may include a sealing plate, which is arranged around the outer peripheral side of the frame structure. The top of the liquid preparation rack 111 has an opening correspondingly, and the opening can be used to expose the cup mouth 121 of the liquid preparation cup 12. The liquid preparation rack 111 may have a plurality of receiving slots for the liquid preparation cups 12 to be arranged. The receiving slots can limit the liquid preparation cups 12, so that the liquid preparation cups 12 are in a relatively fixed state on the liquid preparation rack 111.

[0097] The sealing plate 112 may be moved manually or by a driving mechanism, and the moving mode of the sealing plate 112 may be determined according to actual conditions.

[0098] Taking the distribution direction of the plurality of liquid preparation cups 12 as the first direction X as an example, the moving direction of the sealing plate 112 may be the first direction X. Of course, the moving direction of the sealing plate 112 may also be the second direction Y, and the second direction Y may be a direction perpendicular to the first direction X. Of course, the moving direction of the sealing plate 112 may also be the third direction Z, and the third direction Z, the second direction Y and the first direction X are perpendicular to each other.

[0099] When the plurality of liquid preparation cups 12 are arranged in a single row, the sealing plate 112 can simultaneously seal all the liquid preparation cups 12 in the single row. When the plurality of liquid preparation cups 12 are arranged in multiple rows, the number of sealing plates 112 can be multiple, and the multiple sealing plates 112 can respectively seal the cup openings 121 of the multiple rows of liquid preparation cups 12.

[0100] By movably arranging the sealing plate 112 on the liquid preparation rack 111, the sealing plate 112 can be moved to close or open the cup openings 121 of the plurality of liquid preparation cups 12. When the liquid preparation cup 12 needs to be filled, the sealing plate 112 moves to the second position to expose the cup opening 121 of the liquid preparation cup 12, so that the injection needle 221 can be inserted into the liquid preparation cup 12 for injection. After the liquid preparation cup 12 is filled, the sealing plate 112 moves to the first position, and the sealing plate 112 seals the cup opening 121 of the liquid preparation cup 12, so that the sealing of the cup openings 121 of the plurality of liquid preparation cups 12 is faster and more convenient.

[0101] According to some embodiments of this application, please refer to Figure 4 and Figure 5 The sealing assembly 11 also includes a plurality of sealing members 113, which are arranged on the sealing plate 112 at intervals along the first direction X, and the sealing members 113 are used to close the cup mouth 121; a plurality of through holes 1121 are opened on the sealing plate 112 along the first direction X, and the through holes 1121 are used to communicate with the cup mouth 121; along the first direction X, the plurality of sealing members 113 and the plurality of through holes 1121 are alternately distributed on the sealing plate 112, and the spacing between two adjacent through holes 1121, the spacing between two adjacent sealing members 113 and the spacing between two adjacent preparation cups 12 are all equal; wherein the sealing plate 112 is movably arranged on the preparation liquid rack 111 along the first direction X, and the first direction X is the distribution direction of the plurality of preparation liquid cups 12.

[0102] The seal 113 refers to a sealing component that can provide a sealing function for the cup mouth 121 of the liquid preparation cup 12. The seal 113 can be of various structures. In the present embodiment, the seal 113 can be a cylinder valve. The cylinder valve refers to a sealing block provided at the driving end of the cylinder. The cylinder valve can drive the sealing block to move in the third direction Z. When the cylinder valve is aligned with the cup mouth 121 of the liquid preparation cup 12, the cylinder valve can drive the sealing block to approach the cup mouth 121 and abut against the cup mouth 121 of the liquid preparation cup 12 to complete the sealing of the cup mouth 121 of the liquid preparation cup 12. Of course, the seal 113 can also be other structures, such as a rubber stopper. When the rubber stopper overlaps with the cup mouth 121 of the liquid preparation cup 12, the cup mouth 121 of the liquid preparation cup 12 is sealed.

[0103] The through hole 1121 refers to an opening structure provided on the sealing plate 112, and the through hole 1121 is arranged in the thickness direction of the sealing plate 112. When the through hole 1121 is aligned with the cup opening 121 of the liquid preparation cup 12, the through hole 1121 can be aligned with the cup opening 121 of the liquid preparation cup 12, so that the injection needle 221 can pass through the through hole 1121 and be inserted into the liquid preparation cup 12.

[0104] By alternately setting a plurality of seals 113 and a plurality of through holes 1121 on the sealing plate 112, and the spacing between two adjacent through holes 1121, the spacing between two adjacent seals 113 and the spacing between two adjacent liquid preparation cups 12 are all equal, when the sealing plate 112 is driven to translate along the first direction X, the sealing plate 112 only needs to move the position of one liquid preparation cup 12, so that the sealing plate 112 can close or expose the cup openings 121 of the plurality of liquid preparation cups 12, the moving stroke of the sealing plate 112 is short, and the control accuracy is high. In addition, the sealing plate 112 does not need to be separated from the liquid preparation rack 111, and the installation stability of the sealing plate 112 is high.

[0105] According to some embodiments of this application, please refer to Figure 4 and Figure 5 The sealing assembly 11 further includes a fourth driving member 114, which is mounted on the liquid preparation rack 111 and is used to drive the sealing plate 112 to move along the first direction X.

[0106] The fourth driving member 114 refers to a linear driving component capable of driving the sealing plate 112 to move along the first direction X. The structure of the fourth driving member 114 may be a cylinder, a hydraulic cylinder, an electric push rod or a linear module. Optionally, the fourth driving member 114 is a cylinder.

[0107] When the plurality of liquid preparation cups 12 are arranged in multiple columns, a sealing plate 112 is correspondingly provided on each column of liquid preparation cups 12. The number of the fourth driving member 114 can be one, and the driving end of the fourth driving member 114 is connected to the plurality of sealing plates 112 through a connecting member, and can simultaneously drive the plurality of columns of liquid preparation cups 12 to open simultaneously. Of course, the number of the fourth driving member 114 can be multiple, and the fourth driving member 114 is respectively connected to the sealing plates 112 of the corresponding columns, and can realize the opening or closing of the cup mouth 121 of the liquid preparation cup 12 of the corresponding column.

[0108] The fourth driving member 114 can drive the sealing plate 112 to move along the first direction X on the liquid preparation rack 111, without manually driving the sealing plate 112 to move. Compared with manually driving the sealing plate 112, the movement accuracy is higher, the degree of automation is higher, and the workload of the staff is reduced.

[0109] According to some embodiments of this application, please refer to Figure 4 and Figure 5 The sealing assembly 11 further includes a fourth guide portion 115, which extends along the first direction X and is disposed on the liquid preparation rack 111. The fourth guide portion 115 is slidably matched with the sealing plate 112 to guide the sealing plate 112 to move along the first direction X.

[0110] The fourth guide portion 115 refers to a guide component that can provide a guiding function for the sealing plate 112. The fourth guide portion 115 can be a guide rail. A slider is correspondingly provided at the bottom of the sealing plate 112. The sealing plate 112 slides with the guide rail through the slider. There are two guide rails, which are distributed on the liquid preparation rack 111 along the second direction Y and are located on opposite sides of the liquid preparation cup 12. The slider slides with the two guide rails.

[0111] By providing a fourth guide portion 115 on the liquid preparation rack 111, the fourth guide portion 115 can provide a guiding function for the sealing plate 112, so that the sealing plate 112 can only move along the first direction X on the liquid preparation rack 111, the movement accuracy of the sealing plate 112 is higher, and the sealing plate 112 will not be offset on the liquid preparation rack 111, so that the sealing plate 112 can more accurately close or open the cup mouth 121 of the liquid preparation cup 12.

[0112] According to some embodiments of the present application, a limiting portion 116 is provided on the liquid preparation rack 111 at a side away from the fourth driving member 114 , and the limiting portion 116 is used to limit the travel of the sealing plate 112 in the first direction X.

[0113] The limiting portion 116 refers to a limiting component that can provide a limiting function for the sealing plate 112 , and the limiting portion 116 may be a limiting block.

[0114] By providing a limiting portion 116 on the liquid preparation rack 111, the limiting portion 116 can limit the movement stroke of the sealing plate 112 to prevent the sealing plate 112 from exceeding a predetermined range during movement, thereby reducing the risk of collision between the sealing plate 112 and other components of the device.

[0115] An embodiment of the present application also provides a battery manufacturing device, which includes the battery liquid preparation device of any of the aforementioned embodiments.

[0116] In some embodiments, please refer to Figures 1 to 5 The battery liquid preparation device 100 includes a liquid preparation cup mechanism 10 and a mobile liquid preparation mechanism 20. The liquid preparation cup mechanism 10 includes a sealing assembly 11 and a plurality of liquid preparation cups 12. The liquid preparation cup 12 has a cup opening 121 for receiving electrolyte. The sealing assembly 11 is used to close or expose the cup opening 121. The mobile liquid preparation mechanism 20 includes a position adjustment unit 21 and a liquid injection unit 22. The position adjustment unit 21 is used to drive the liquid injection unit to move between the plurality of liquid preparation cups. The liquid injection unit includes a liquid injection needle 221. The liquid injection needle 221 is used to be inserted into the cup opening 121 to inject electrolyte into the liquid preparation cup 12. The position adjustment unit 21 includes a frame 211 and a first drive assembly 212. The first drive assembly 212 is disposed on the frame 211. The first drive assembly 212 is connected to the liquid injection unit 22. The first drive assembly 212 is used to drive the liquid injection unit 22 to move along a first direction X. The first direction X is the distribution direction of the plurality of liquid preparation cups 12. The position adjustment unit 21 also includes a second drive component 213, which is arranged between the first drive component 212 and the frame 211. The second drive component 213 is used to drive the first drive component 212 to move along a second direction Y, and the second direction Y is perpendicular to the first direction X. The multiple liquid preparation cups 12 are distributed in a rectangular array.

[0117] The position adjustment unit 21 is set so that the injection needle 221 can move between multiple reserve liquid cups 12. After the injection needle 221 moves to the corresponding reserve liquid cup 12, the sealing component 11 exposes the cup mouth 121 of the reserve liquid cup 12, and the injection needle 221 is directly connected to the reserve liquid cup 12, so that the electrolyte of multiple reserve liquid cups 12 can be prepared. Compared with the prior art in which the injection needle 221 is stationary and each reserve liquid cup needs to be equipped with an injection needle 221 valve, the use of a movable injection needle 221 reduces the number of injection needles 221, and correspondingly reduces the cost of the device. The reduction in the number of injection needles 221 also reduces the maintenance difficulty of the device. Through the setting of the first drive component 212, the first drive component 212 can drive the injection unit 22 to move in the first direction X, thereby realizing the function of the injection needle 221 in the injection unit 22 to prepare the electrolyte for multiple reserve liquid cups 12 in turn. The second drive assembly 213 can drive the first drive assembly 212 to move along the second direction Y, and can realize the position adjustment of the injection needle 221 in the first direction X and the second direction Y. The position movement range of the injection needle 221 is wider, so that the injection needle 221 can not only complete the giving way of the reserve liquid cup 12 after the injection, but also can meet the injection function when multiple columns of reserve liquid cups 12 are distributed, and the scope of use is wider. Through the cooperation of the first drive assembly 212 and the second drive assembly 213, full coverage of multiple reserve liquid cups 12 in multiple columns of reserve liquid cups 12 can be achieved, and the structure is more compact. In addition, multiple reserve liquid cups 12 are distributed in a rectangular array, the spatial layout of the device is more reasonable, and the occupied space is smaller, which reduces the length of multiple reserve liquid cups 12 in the first direction X, and correspondingly reduces the movement stroke of the first drive assembly 212 in the first direction X, so that the first drive assembly 212 or the second drive assembly 213 drives the injection unit 22 to move more stably and reliably.

[0118] In some embodiments, the injection unit 22 also includes a lifting component, which is used to drive the injection needle 221 to move along the third direction Z so that the injection needle 221 can be inserted into the cup mouth 121 or separated from the cup mouth 121. The third direction Z, the second direction Y and the first direction X are perpendicular to each other. The lifting assembly includes a lifting plate 2221, a lifting drive member 2222, an injection rack 2223 and a third guide portion 2224. The lifting plate 2221 is connected to the first drive assembly 212; the lifting drive member 2222 is installed on the lifting plate 2221, the injection rack 2223 is used for installing the injection needle 221, and the lifting drive member 2222 is used to drive the injection rack 2223 to move along the third direction Z; the third guide portion 2224 is arranged on the lifting plate 2221, and the third guide portion 2224 is used to guide the injection rack 2223 to move along the third direction Z. The number of injection needles 221 is multiple, and the multiple injection needles 221 are spaced apart on the injection rack 2223 along the first direction X. Along the first direction X, the spacing between two adjacent injection needles 221 is an integer multiple of the spacing between two adjacent preparation cups 12.

[0119] The setting of the lifting assembly can drive the injection needle 221 to move in the third direction Z, and can meet the requirement that when the liquid preparation cup 12 is stationary, the injection needle 221 can be inserted downward into the cup mouth 121 of the liquid preparation cup 12 to realize the injection function of the liquid preparation cup 12, and the structure of the liquid preparation cup mechanism 10 is simpler. The injection needle 221 can be installed and fixed on the injection frame 2223. Under the guidance of the third guide part 2224, the lifting drive member 2222 drives the injection frame 2223 to stably lift and lower along the third direction Z. The lifting stability of the injection frame 2223 is higher, so that the injection needle 221 can accurately inject liquid into the liquid preparation cup 12. Multiple injection needles 221 can simultaneously inject liquid into multiple liquid preparation cups 12, saving injection time and improving injection efficiency. After multiple preparation cups are simultaneously injected with liquid using multiple injection needles 221, the position adjustment unit 21 drives the injection unit 22 to move along the first direction X to the next preparation cup 12 to be injected with liquid. Compared with the case where the spacing between two adjacent injection needles 221 is equal to the spacing between two adjacent preparation cups 12, the injection needle 221 only needs to move the distance of one preparation cup before the injection unit 22 can perform the next injection. The moving distance of the injection unit 22 during a single position adjustment in the first direction X is shorter, and the injection efficiency is higher.

[0120] In some embodiments, the sealing assembly 11 includes a liquid preparation rack 111 and a sealing plate 112. The liquid preparation rack 111 is used to carry multiple liquid preparation cups 12; the sealing plate 112 is movably disposed on the liquid preparation rack 111, and the sealing plate 112 has a first position and a second position. When the sealing plate 112 is in the first position, the sealing plate 112 closes the cup openings 121 of the multiple liquid preparation cups 12. When the sealing plate 112 is in the second position, the sealing plate 112 is used to expose the cup openings 121 of the multiple liquid preparation cups 12. The sealing assembly 11 further includes a plurality of sealing members 113, which are arranged at intervals on the sealing plate 112 along the first direction X, and the sealing members 113 are used to close the cup opening 121; a plurality of through holes 1121 are provided on the sealing plate 112 along the first direction X, and the through holes 1121 are used to communicate with the cup opening 121; along the first direction X, the plurality of sealing members 113 and the plurality of through holes 1121 are alternately distributed on the sealing plate 112, and the spacing between two adjacent through holes 1121, the spacing between two adjacent sealing members 113 and the spacing between two adjacent liquid preparation cups 12 are all equal; wherein the sealing plate 112 is movably arranged on the liquid preparation rack 111 along the first direction X, and the first direction X is the distribution direction of the plurality of liquid preparation cups 12. The sealing assembly 11 further includes a fourth driving member 114, which is installed on the liquid preparation rack 111, and is used to drive the sealing plate 112 to move along the first direction X. The sealing assembly 11 also includes a fourth guide portion 115, which extends along the first direction X and is arranged on the liquid preparation rack 111. The fourth guide portion 115 is slidably matched with the sealing plate 112 to guide the sealing plate 112 to move along the first direction X. A limiting portion 116 is provided on the liquid preparation rack 111 on a side away from the fourth driving member 114. The limiting portion 116 is used to limit the travel of the sealing plate 112 in the first direction X.

[0121] The sealing plate 112 is movably arranged on the liquid preparation rack 111. The sealing plate 112 can be moved to close or open the cup openings 121 of the plurality of liquid preparation cups 12. When the liquid preparation cup 12 needs to be filled, the sealing plate 112 is moved to the second position to expose the cup opening 121 of the liquid preparation cup 12, so that the injection needle 221 can be inserted into the liquid preparation cup 12 for injection. After the liquid preparation cup 12 is filled, the sealing plate 112 is moved to the first position, and the sealing plate 112 can seal the cup opening 121 of the liquid preparation cup 12. The sealing of the cup openings 121 of the plurality of liquid preparation cups 12 is faster and more convenient. A plurality of seals 113 and a plurality of through holes 1121 are alternately arranged on the sealing plate 112, and the spacing between two adjacent through holes 1121, the spacing between two adjacent seals 113 and the spacing between two adjacent liquid preparation cups 12 are all equal. When the sealing plate 112 is driven to translate along the first direction X, the sealing plate 112 only needs to move the position of one liquid preparation cup 12 to achieve the sealing plate 112 closing or exposing the cup openings 121 of multiple liquid preparation cups 12. The moving stroke of the sealing plate 112 is short and the control accuracy is high. The sealing plate 112 does not need to be separated from the liquid preparation rack 111, and the installation stability of the sealing plate 112 is high. The fourth driving member 114 can drive the sealing plate 112 to move along the first direction X on the liquid preparation rack 111, and there is no need for manual driving of the sealing plate 112. Compared with manual driving of the sealing plate 112, the moving accuracy is higher, the degree of automation is high, and the workload of the staff is reduced. The fourth guide portion 115 can provide a guiding function for the sealing plate 112, so that the sealing plate 112 can only move along the first direction X on the liquid preparation rack 111. The movement accuracy of the sealing plate 112 is higher, and the sealing plate 112 will not be offset on the liquid preparation rack 111, so that the sealing plate 112 can more accurately close or open the cup mouth 121 of the liquid preparation cup 12.

[0122] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery liquid reserve device, characterized in that: include: The liquid preparation cup mechanism comprises a sealing assembly and a plurality of liquid preparation cups, wherein the liquid preparation cup has a cup opening for receiving electrolyte, and the sealing assembly is used to close or expose the cup opening; The mobile liquid preparation mechanism includes a position adjustment unit and a liquid injection unit. The position adjustment unit is used to drive the liquid injection unit to move between the multiple liquid preparation cups. The liquid injection unit includes a liquid injection needle. The liquid injection needle is used to be inserted into the cup mouth to inject electrolyte into the liquid preparation cup.

2. The battery liquid reserve device according to claim 1, characterized in that: The position adjustment unit comprises: frame; A first driving component is disposed on the frame, and the first driving component is connected to the liquid injection unit, and is used to drive the liquid injection unit to move along a first direction, and the first direction is the distribution direction of the plurality of liquid preparation cups.

3. The battery liquid reserve device according to claim 2, characterized in that: The position adjustment unit also includes: The second driving assembly is arranged between the first driving assembly and the frame, and the second driving assembly is used to drive the first driving assembly to move along a second direction, and the second direction is perpendicular to the first direction.

4. The battery liquid reserve device according to claim 3, characterized in that: The plurality of liquid preparation cups are distributed in a rectangular array.

5. The battery liquid reserve device according to claim 3, characterized in that: The liquid injection unit also includes: A lifting component is used to drive the injection needle to move along a third direction so that the injection needle can be inserted into the cup mouth or separated from the cup mouth, and the third direction, the second direction and the first direction are perpendicular to each other.

6. The battery liquid reserve device according to claim 5, characterized in that: The lifting assembly comprises: A lifting plate connected to the first driving assembly; A lifting drive component, mounted on the lifting plate; A liquid injection rack, used for mounting the liquid injection needle, and the lifting drive member is used for driving the liquid injection rack to move along the third direction; The third guide portion is arranged on the lifting plate, and the third guide portion is used to guide the liquid injection rack to move along the third direction.

7. The battery liquid reserve device according to claim 6, characterized in that: There are multiple injection needles, and the multiple injection needles are distributed at intervals along the first direction on the injection rack.

8. The battery liquid reserve device according to claim 7, characterized in that: Along the first direction, the distance between two adjacent injection needles is an integer multiple of the distance between two adjacent preparation cups.

9. The battery liquid reserve device according to claim 1, characterized in that: The sealing assembly comprises: A liquid preparation rack, used for carrying a plurality of the liquid preparation cups; A sealing plate is movably disposed on the liquid preparation rack, and the sealing plate has a first position and a second position. When the sealing plate is in the first position, the sealing plate closes the cup openings of the plurality of liquid preparation cups. When the sealing plate is in the second position, the sealing plate is used to expose the cup openings of the plurality of liquid preparation cups.

10. The battery liquid reserve device according to claim 9, characterized in that: The sealing assembly further comprises: A plurality of sealing members are arranged on the sealing plate at intervals along a first direction, and the sealing members are used to seal the cup opening; The sealing plate is provided with a plurality of through holes along the first direction, and the through holes are used to communicate with the cup mouth; along the first direction, the plurality of sealing members and the plurality of through holes are alternately distributed on the sealing plate, and the spacing between two adjacent through holes, the spacing between two adjacent sealing members, and the spacing between two adjacent liquid preparation cups are all equal; Wherein, the sealing plate is movably arranged on the liquid preparation rack along the first direction, and the first direction is the distribution direction of the plurality of liquid preparation cups.

11. The battery liquid reserve device according to claim 10, characterized in that: The sealing assembly further comprises: A fourth driving member is installed on the liquid preparation rack, and the fourth driving member is used to drive the sealing plate to move along the first direction.

12. The battery liquid reserve device according to claim 10, characterized in that: The sealing assembly further comprises: A fourth guide portion is extended along the first direction and is disposed on the liquid preparation rack. The fourth guide portion is slidably matched with the sealing plate to guide the sealing plate to move along the first direction.

13. The battery liquid reserve device according to claim 11, characterized in that: A limiting portion is provided on the liquid preparation rack at a side away from the fourth driving member, and the limiting portion is used to limit the travel of the sealing plate in the first direction.

14. A battery manufacturing device, characterized in that: It comprises a battery liquid reserve device according to any one of claims 1-13.

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