An electrolyte automatic filling device

Abstract

The utility model discloses an electrolyte automatic filling device, including conveyer belt, be provided with inert gas sealed cabin on conveyer belt, the top of inert gas sealed cabin is provided with storage jar, be provided with main liquid supply pipe on storage jar, and the bottom of main liquid supply pipe passes through sealed cabin and is connected with a plurality of parallel liquid outlet pipe, be provided with liquid injection needle all on a plurality of liquid outlet pipe, be provided with moving mechanism in sealed cabin, and a plurality of liquid outlet pipe and liquid injection needle are driven to keep vertical movement by moving mechanism, and conveyer belt and moving mechanism are integrated on same control system, through a plurality of parallel liquid outlet pipe and the setting of liquid injection needle corresponding with liquid outlet pipe one to one, and are connected with moving mechanism, make the device when filling electrolyte to jar body, can realize the perfusion work of multiple jar body single time, effectively improved the electrolyte filling quantity of single time, and through conveyer belt carries out jar body's delivery, realized the rapid feeding and discharge of jar body, further improved the filling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and in particular to an automatic electrolyte filling device. Background Technology

[0002] Lithium-ion battery electrolyte is the carrier of ions in the battery. It is generally composed of lithium salts and organic solvents. A crucial step in the lithium-ion battery manufacturing process is the injection of the electrolyte into the battery, and the method of electrolyte injection affects the battery's production efficiency.

[0003] Utility model CN217350739U relates to the field of battery production technology, and in particular to an automatic electrolyte filling device for lithium-ion batteries. Addressing the problem of low electrolyte filling efficiency in existing systems, the proposed solution includes a support frame, a reaction vessel, two quantitative controllers, two weighbridges, and two packaging barrels. A filling mechanism is located below the reaction vessel. This filling mechanism includes a three-way pipe installed at the bottom of the reaction vessel, two filter components installed at the other ends of the three-way pipe, two feed pipes installed on the two filter components, solenoid valves installed on the two feed pipes, and two flexible metal hoses installed at the other ends of the two feed pipes. This utility model has a reasonable structure and simple operation, achieving automatic electrolyte filling and thus improving filling efficiency. It automatically discharges filtered impurities, avoiding filter clogging and further improving electrolyte filtration efficiency.

[0004] The device disclosed in the above utility model can only perform liquid filling work on two battery tanks at a time, resulting in low filling efficiency. Utility Model Content

[0005] The purpose of this invention is to provide an automatic electrolyte filling device to solve the problem of low filling efficiency mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic electrolyte filling device, comprising a conveyor belt, an inert gas sealed chamber on the conveyor belt, a storage tank on the top of the inert gas sealed chamber, a main liquid supply pipe on the storage tank, the bottom end of the main liquid supply pipe passing through the sealed chamber and connected to several parallel liquid outlet pipes, each of the liquid outlet pipes being equipped with an injection needle, a moving mechanism inside the sealed chamber, the liquid outlet pipes and the injection needles being driven by the moving mechanism to maintain vertical movement, and the conveyor belt and the moving mechanism being integrated into the same control system.

[0007] Preferably, each of the several outlet pipes is equipped with an independent metering pump, solenoid valve and mass flow meter.

[0008] Preferably, the moving mechanism includes a first bevel gear rotatably connected to the inner wall of the top of the sealed chamber, a threaded rod connected to the shaft of the first bevel gear, a lifting rod threadedly connected to the threaded rod, several liquid outlet pipes and injection needles being disposed on the lifting rod, a second bevel gear meshing with the first bevel gear, a servo motor connected to the shaft of the second bevel gear, and the servo motor being mounted on the outer wall of the sealed chamber.

[0009] Preferably, a limit rod is provided inside the sealed chamber, the limit rod is located on the side of the sealed chamber away from the threaded rod, and the other end of the lifting rod is slidably connected to the limit rod.

[0010] Preferably, the sealed chamber is slidably equipped with a first isolation door, a second isolation door, a third isolation door, and a fourth isolation door. Centered on the injection needle, the first, second, third, and fourth isolation doors are located on both sides of the injection needle. The tops of the first and third isolation doors are connected and driven by a first cylinder, while the tops of the second and fourth isolation doors are connected and driven by a second cylinder. Both the first and second cylinders are mounted on the outer wall of the sealed chamber and electrically connected to the control system of the device.

[0011] Preferably, the conveyor belt has a modular chain plate design, the conveyor chain plate adopts a segmented structure, and a sealing strip is embedded on the edge of each chain plate. The sealing strip is made of fluororubber or neodymium magnet.

[0012] Preferably, all components in contact with the electrolyte are made of corrosion-resistant materials, including Hastelloy, 316L stainless steel, or PFA coating.

[0013] The beneficial effects of this utility model are: This invention features several parallel liquid outlet pipes and corresponding injection needles connected to each outlet pipe, which are then linked to a moving mechanism. This allows the device to fill multiple tanks at once when filling them with electrolyte, effectively increasing the amount of electrolyte filled in a single operation. Furthermore, the conveyor belt facilitates rapid loading and unloading of the tanks, further enhancing filling efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an automatic electrolyte filling device proposed in this utility model; Figure 2 This is a front cross-sectional view of an automatic electrolyte filling device proposed in this utility model. Figure 3 This is a top view cross-sectional structural diagram of an automatic electrolyte filling device proposed in this utility model; Figure 4 This is a front view schematic diagram of an automatic electrolyte filling device proposed in this utility model.

[0015] In the diagram: 1. Conveyor belt; 2. Sealed chamber; 3. Storage tank; 4. Main liquid supply pipe; 5. Liquid outlet pipe; 6. Injection needle; 7. Moving mechanism; 8. First isolation door; 9. Second isolation door; 10. Third isolation door; 11. Fourth isolation door; 12. Second cylinder; 13. First cylinder; 71. First bevel gear; 72. Threaded rod; 73. Lifting rod; 74. Second bevel gear; 75. Servo motor; 76. Limit rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1-4 An automatic electrolyte filling device includes a conveyor belt 1, an inert gas sealed chamber 2 on the conveyor belt 1, a storage tank 3 on the top of the inert gas sealed chamber 2, a main liquid supply pipe 4 on the storage tank 3, the bottom end of the main liquid supply pipe 4 passing through the sealed chamber 2 and connected to several parallel liquid outlet pipes 5, each of the several liquid outlet pipes 5 being equipped with an injection needle 6, a moving mechanism 7 being provided inside the sealed chamber 2, the several liquid outlet pipes 5 and the injection needles 6 being driven by the moving mechanism 7 to maintain vertical movement, and the conveyor belt 1 and the moving mechanism 7 being integrated into the same control system.

[0018] When electrolyte filling is required, several tanks to be filled are arranged as a whole. The conveyor belt 1 transports the arranged tanks to directly below the injection needle 6. Electrolyte is then supplied to the main supply pipe 4 through the storage tank 3. The electrolyte then enters several parallel outlet pipes 5 and the corresponding injection needle 6. The moving mechanism 7 then moves the injection needle 6 downward, thereby controlling the injection needle 6 to move to the appropriate position, thus realizing the operation of injecting electrolyte into multiple tanks at once.

[0019] Specifically, in this embodiment, each of the several outlet pipes 5 is equipped with an independent metering pump, solenoid valve and mass flow meter, thereby achieving precise control of the single outlet volume of the outlet pipe 5 and realizing closed-loop control of the filling volume of each channel.

[0020] Specifically, in this embodiment, the moving mechanism 7 includes a first bevel gear 71 rotatably connected to the inner wall of the top of the sealed chamber 2. A threaded rod 72 is connected to the shaft of the first bevel gear 71, and a lifting rod 73 is threaded onto the threaded rod 72. Several liquid outlet pipes 5 and liquid injection needles 6 are all arranged on the lifting rod 73. A second bevel gear 74 meshes with the first bevel gear 71, and a servo motor 75 is connected to the shaft of the second bevel gear 74. The servo motor 75 is installed on the outer wall of the sealed chamber 2.

[0021] When the injection needle 6 needs to be moved up and down by the moving mechanism 7, the second bevel gear 74 is driven to rotate by the servo motor 75, which in turn drives the first bevel gear 71 to rotate the threaded rod 72, thereby driving the lifting rod 73 to move up and down, thus driving the injection needle 6 to move synchronously, so as to achieve the purpose of driving the injection needle 6 to move up and down for injection.

[0022] Specifically, in this embodiment, a limiting rod 76 is provided inside the sealed chamber 2. The limiting rod 76 is located on the side of the sealed chamber 2 away from the threaded rod 72, and the other end of the lifting rod 73 is slidably connected to the limiting rod 76. By setting the limiting rod 76, the lifting rod 73 can only move in the vertical direction, thereby restricting the movement direction of the lifting rod 73.

[0023] Specifically, in this embodiment, a first isolation door 8, a second isolation door 9, a third isolation door 10, and a fourth isolation door 11 are slidably disposed inside the sealed chamber 2. With the injection needle 6 as the center, the first isolation door 8, the second isolation door 9, the third isolation door 10, and the fourth isolation door 11 are respectively placed on both sides of the injection needle 6. The top of the first isolation door 8 and the third isolation door 10 are connected and driven by the first cylinder 13. The top of the second isolation door 9 and the fourth isolation door 11 are connected and driven by the second cylinder 12. The first cylinder 13 and the second cylinder 12 are both installed on the outer wall of the sealed chamber 2 and electrically connected to the control system of the device.

[0024] After the tank in the sealed chamber 2 is filled with liquid, the system controls the first cylinder 13 to drive the first isolation door 8 and the third isolation door 10 to move upward, so that the tank to be filled on the conveyor belt 1 can pass through the first isolation door 8 and enter the sealed chamber 2. After the liquid is filled, the tank can pass through the third isolation door 10 and move towards the outlet of the sealed chamber 2. When the tank moves to a specific position, the first isolation door 8 and the third isolation door 10 move down to seal the sealed chamber 2, and the second cylinder 12 drives the second isolation door 9 and the fourth isolation door 11 to move upward, so that the tank to be filled can move directly below the injection needle 6. After the liquid is filled, the tank can move to the outside of the sealed chamber 2, so that the sealed chamber 2 is always sealed during the tank transportation process, thereby avoiding the leakage of inert gas in the sealed chamber 2.

[0025] Specifically, in this embodiment, the conveyor belt 1 is a modular chain plate design. The conveyor chain plate adopts a segmented structure, and a sealing strip is embedded on the edge of each chain plate. The sealing strip is made of fluororubber or neodymium magnet material, so that adjacent chain plates can adhere to form a continuous sealing surface, thereby reducing air leakage from gaps.

[0026] Specifically, in this embodiment, all components in contact with the electrolyte are made of corrosion-resistant materials, including Hastelloy, 316L stainless steel, or PFA coating.

[0027] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An automatic electrolyte filling device, comprising a conveyor belt (1), characterized in that: An inert gas sealed chamber (2) is provided on the conveyor belt (1). A storage tank (3) is provided on the top of the inert gas sealed chamber (2). A main liquid supply pipe (4) is provided on the storage tank (3). The bottom end of the main liquid supply pipe (4) passes through the sealed chamber (2) and is connected to several parallel liquid outlet pipes (5). Each of the several liquid outlet pipes (5) is provided with an injection needle (6). A moving mechanism (7) is provided inside the sealed chamber (2). The several liquid outlet pipes (5) and the injection needles (6) are driven by the moving mechanism (7) to maintain vertical movement. The conveyor belt (1) and the moving mechanism (7) are integrated on the same control system.

2. The automatic electrolyte filling device according to claim 1, characterized in that: Each of the aforementioned outlet pipes (5) is equipped with an independent metering pump, solenoid valve, and mass flow meter.

3. The automatic electrolyte filling device according to claim 2, characterized in that: The moving mechanism (7) includes a first bevel gear (71) rotatably connected to the inner wall of the top of the sealed chamber (2). A threaded rod (72) is connected to the axis of the first bevel gear (71). A lifting rod (73) is threaded onto the threaded rod (72). Several liquid outlet pipes (5) and injection needles (6) are all set on the lifting rod (73). A second bevel gear (74) meshes with the first bevel gear (71). A servo motor (75) is connected to the axis of the second bevel gear (74). The servo motor (75) is installed on the outer wall of the sealed chamber (2).

4. The automatic electrolyte filling device according to claim 3, characterized in that: The sealed chamber (2) is provided with a limiting rod (76), which is located on the side of the sealed chamber (2) away from the threaded rod (72), and the other end of the lifting rod (73) is slidably connected to the limiting rod (76).

5. An automatic electrolyte filling device according to claim 1 or 3, characterized in that: The sealed chamber (2) is slidably equipped with a first isolation door (8), a second isolation door (9), a third isolation door (10), and a fourth isolation door (11). Centered on the injection needle (6), the first isolation door (8), the second isolation door (9), the third isolation door (10), and the fourth isolation door (11) are placed on both sides of the injection needle (6). The top of the first isolation door (8) is connected to the top of the third isolation door (10) and is driven by the first cylinder (13). The top of the second isolation door (9) is connected to the top of the fourth isolation door (11) and is driven by the second cylinder (12). The first cylinder (13) and the second cylinder (12) are both installed on the outer wall of the sealed chamber (2) and are electrically connected to the control system of the device.

6. The automatic electrolyte filling device according to claim 5, characterized in that: The conveyor belt (1) is a modular chain plate design. The conveyor chain plate adopts a segmented structure, and a sealing strip is embedded on the edge of each chain plate. The sealing strip is made of fluororubber or neodymium magnet.

7. An automatic electrolyte filling device according to any one of claims 1-6, characterized in that: All components that come into contact with the electrolyte are made of corrosion-resistant materials, including Hastelloy, 316L stainless steel, or PFA coating.

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