A battery zinc paste injection device

Abstract

The utility model discloses a battery zinc paste injection device, including frame, zinc paste injection machine, steel shell fixed seat, weighing module and servo electric jar, the zinc paste injection machine fixed mounting on the frame, the zinc paste injection machine top inlet is equipped with bunker, the zinc paste injection machine bottom outlet is equipped with injection needle tube perpendicularly, weighing module fixed mounting on servo electric jar, by servo electric jar drive liftable, steel shell fixed seat fixed mounting on weighing module. The utility model not only can realize the automatic injection of zinc paste, and in the injection process, the weighing module can also to the battery steel shell and the real -time weighing of zinc paste injection, and need not manual before and after weighing, and its operation is simple, and the efficiency is high, and when real -time weighing of weighing module, greatly facilitate the accurate control of zinc paste injection amount, let the injection control efficiency of zinc paste be high, also accurate.

Description

Technical Field

[0001] This utility model relates to the field of battery production equipment technology, and in particular to a battery zinc paste injection device. Background Technology

[0002] In the battery manufacturing process, after the positive electrode ring is installed inside the steel casing, a precise amount of negative electrode zinc paste must be injected. If the amount of zinc paste deviates from ±3%, it will directly affect the battery capacity, gas evolution, and safety performance. Therefore, "paste injection amount" is one of the core parameters for process control. Large-scale production lines generally use cam-type rotary zinc injection machines, which rely on servo plunger pumps or gear pumps to measure online in a "volume-flow" manner. The production capacity can reach hundreds of units per minute. However, the equipment is complex, has a long changeover and debugging time, and a high unit cost, making it unsuitable for laboratory scenarios with small batches, multiple formulations, and frequent changeovers.

[0003] Currently, the laboratory still uses the traditional "offline double weighing" method: first, the empty shells are manually weighed and numbered, then paste is manually injected, and finally weighed again. The actual amount of paste injected is calculated by the difference between the two weighings. This method requires two clamping and two readings, which is time-consuming, inefficient, and prone to errors. Moreover, when manually injecting zinc paste in one go, the slurry has high viscosity and a fast flow rate, making it difficult for internal air to be expelled in time. This often results in air bubbles forming at the bottom of the shell, causing large quality differences within the same batch of batteries. Data traceability is poor, and batteries that exceed the acceptable limits can only be rejected afterward, resulting in serious waste of raw materials. Utility Model Content

[0004] The purpose of this invention is to provide a battery zinc paste injection device.

[0005] The technical solution to achieve the purpose of this utility model is: a battery zinc paste injection device, including a frame, a zinc paste injection machine, a steel shell fixing base, a weighing module, and a servo cylinder. The zinc paste injection machine is fixedly installed on the frame. A hopper is provided at the upper inlet of the zinc paste injection machine, and an injection needle is vertically provided at the bottom outlet of the zinc paste injection machine. The diameter of the needle is smaller than the inner diameter of the battery steel shell, and the length of the needle in the vertical direction is not less than the axial length of the battery steel shell. The weighing module is fixedly installed on the servo cylinder and can be raised and lowered by the servo cylinder. The steel shell fixing base is fixedly installed on the weighing module and is located directly below the injection needle. The injection needle is located on the lifting path of the battery steel shell on the steel shell fixing base. The weighing module, the zinc paste injection machine, and the servo cylinder are all electrically connected to the same control unit.

[0006] Furthermore, the hopper is cone-shaped, wider at the top and narrower at the bottom. This cone shape facilitates the downward output of zinc paste.

[0007] Furthermore, the hopper has an open top. This open design facilitates loading.

[0008] Furthermore, the steel shell fixing base is a vertical sleeve structure. The battery steel shell is directly or indirectly inserted into the steel shell fixing base, and the steel shell fixing base positions the battery steel shell.

[0009] Furthermore, the battery steel shell is coaxially inserted into the carrier, the outer diameter of the carrier being consistent with the inner diameter of the steel shell fixing seat, and the carrier being vertically inserted into the steel shell fixing seat. The inner diameter of the steel shell fixing seat can also be consistent with the outer diameter of the battery steel shell, with the battery steel shell directly inserted into the steel shell fixing seat, which positions the battery steel shell. Alternatively, the inner diameter of the steel shell fixing seat can be consistent with the outer diameter of the carrier, with the battery steel shell coaxially inserted into the carrier, and the carrier being vertically inserted into the steel shell fixing seat, which positions the steel shell fixing seat and the carrier within it. Because the bottom of the battery steel shell has a protruding head that forms the positive electrode, and the bottom surface of the battery steel shell is not flat, the direct structure for positioning the battery steel shell needs to have a matching structure. Therefore, battery manufacturers often have a large number of carriers on hand. These carriers not only have an inner diameter consistent with the outer diameter of the battery steel shell, but their inner bottom surface also has a groove that matches the battery steel shell. This invention utilizes the carrier to first coaxially confine the battery steel casing within the carrier. The opening of the steel casing fixing seat has no special requirements; a normal hole that fits the carrier is sufficient. In other words, by using a common and readily available carrier, the installation of the steel casing fixing seat is simplified. Furthermore, when zinc paste is injected into the battery steel casing and the casing is removed, the carrier is also removed, facilitating the placement of the battery steel casing after removal.

[0010] Furthermore, the steel shell fixing base is coaxial with the injection needle tube.

[0011] Furthermore, the servo electric cylinder is vertically fixed on the frame.

[0012] Furthermore, the control unit is a PLC system or a microcontroller system.

[0013] This utility model relates to a battery zinc paste injection device. By setting up the zinc paste injection machine, it realizes the automatic injection of zinc paste into the battery steel shell. At the same time, the steel shell fixing seat, which positions the battery steel shell, is installed on the weighing module driven by the servo cylinder for lifting and lowering. This allows the weighing module to not only weigh and measure the empty battery steel shell and the battery steel shell with zinc paste injected in real time, facilitating the control of the zinc paste injection amount, but also to use the control unit to precisely control the servo cylinder. During the zinc paste injection process, the needle can be inserted into the bottom of the battery steel shell. Then, while the zinc paste injection machine injects zinc paste, the servo cylinder drives the battery steel shell downward, gradually injecting zinc paste into the battery steel shell.

[0014] Compared to the traditional method of manual weighing and injection, this novel battery zinc paste injection device not only achieves automatic zinc paste injection, but also allows the weighing module to weigh the battery casing and the injected zinc paste in real time during the injection process, eliminating the need for manual weighing before and after injection. This simplifies operation, increases efficiency, and facilitates precise control of the zinc paste injection amount. It avoids errors caused by adding more paste when the amount is insufficient after manual weighing or by injecting too much. This results in both high efficiency and accuracy in zinc paste injection control. Furthermore, while injecting zinc paste, the servo cylinder simultaneously moves the battery casing downwards, allowing the needle to extend into the casing and inject gradually from the bottom to the top. This effectively prevents air bubbles from forming inside the battery casing, resulting in better battery quality and more even weight distribution among the individual batteries. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the battery zinc paste injection device of this utility model; Figure 2 This is a schematic diagram of the main structure of the battery zinc paste injection device of this utility model; Figure 3 This is a schematic diagram of the control structure of the battery zinc paste injection device of this utility model. Detailed Implementation

[0016] The preferred embodiment of the battery zinc paste injection device of this utility model will be described in detail below with reference to the accompanying drawings: like Figures 1 to 3 As shown, a battery zinc paste injection device includes a frame 10, a zinc paste injection machine 1, a steel shell fixing base 2, a weighing module 3, and a servo cylinder 4. The zinc paste injection machine 1 is fixedly installed on the frame 10. A hopper 11 is provided at the upper inlet of the zinc paste injection machine 1, and an injection needle tube 12 is vertically provided at the bottom outlet of the zinc paste injection machine 1. The diameter D1 of the needle tube 12 is smaller than the inner diameter D2 of the battery steel shell 100, and the length H1 of the needle tube 12 in the vertical direction is not less than the axial length H2 of the battery steel shell 100. The weighing module 3 is fixedly installed on the servo cylinder 4 and can be raised and lowered by the servo cylinder 4. The steel shell fixing base 2 is fixedly installed on the weighing module 3 and is located directly below the injection needle tube 12. The injection needle tube 12 is located on the lifting path of the battery steel shell 100 on the steel shell fixing base 2. The weighing module 3, the zinc paste injection machine 1, and the servo cylinder 4 are all electrically connected to the same control unit 5.

[0017] This utility model relates to a battery zinc paste injection device. The zinc paste injection machine 1 acts as a power unit for extruding zinc paste. The diameter D1 of the needle tube 12 is smaller than the inner diameter D2 of the battery steel shell 100. The needle tube 12 is used to extend into the battery steel shell 100 to introduce zinc paste into it. The vertical length H1 of the needle tube 12 is not less than the axial length H2 of the battery steel shell 100, and the needle tube 12 can extend to the bottom of the battery steel shell 100. The steel shell fixing seat 2 is used to position the battery steel shell 100. The weighing module 3 is used to weigh the empty battery steel shell 100 positioned on the steel shell fixing seat 2 and the battery steel shell 100 with zinc paste injected, and transmits the weighed weight data to the control unit 5. The servo electric cylinder 4 acts as a drive mechanism, enabling precise operation. The servo electric cylinder 4 is used to drive the weighing module 3, the steel shell fixing seat 2, and the battery steel shell 100 positioned on it to rise and fall. The control unit 5 is used to receive the weight data transmitted from the weighing module 3, and to control the start and stop of the zinc paste injection machine 1 and the operation of the servo electric cylinder 4.

[0018] This utility model relates to a battery zinc paste injection device. When injecting zinc paste into a battery steel casing 100, the battery steel casing 100 is placed on the steel casing fixing seat 2 and positioned by the steel casing fixing seat 2. Zinc paste is then added to the hopper 11. Subsequently, the control unit 5 controls the servo cylinder 4 to move, causing the weighing module 3, the steel casing fixing seat 2, and the positioned battery steel casing 100 to rise until the needle tube 12 is inserted into the battery steel casing 100 and near its bottom. Then, the control unit 5 controls the zinc paste injection machine 1 to move, injecting the zinc paste from the hopper 11 into the battery steel casing 100 through the needle tube 12. During the injection process, the control unit 5 controls the servo cylinder 4 to move, causing the battery steel casing 100 to descend at a speed adapted to the injection speed. In other words, the zinc paste injection machine 1 injects zinc paste into the battery steel casing 100 while the battery steel casing 100 moves downwards. Simultaneously, throughout the injection process, the weighing module 3 senses the weight of the battery steel casing 100, or the battery steel casing 100 and its internal zinc paste, in real time, and transmits the weight signal to the control unit 5. The control unit 5 calculates the amount of zinc paste to be injected based on the weight of the battery steel casing 100 and its internal zinc paste transmitted from the weighing module 3. Once the amount of zinc paste injected into the battery steel casing 100 reaches the set value, the control unit 5 stops the zinc paste injector 1 and controls the servo cylinder 4 to move, causing the battery steel casing 100 to descend at a speed adapted to the injection speed, returning to its initial position. This completes the injection of zinc paste into the battery steel casing 100.

[0019] This utility model relates to a battery zinc paste injection device. By setting up the zinc paste injection machine 1, it realizes the automatic injection of zinc paste into the battery steel shell 100. At the same time, the steel shell fixing seat 2, which positions the battery steel shell 100, is installed on the weighing module 3, which is driven to rise and fall by the servo cylinder 4. This allows the weighing module 3 to not only weigh and measure the empty battery steel shell 100 and the battery steel shell 100 with zinc paste injected in real time, facilitating the control of the amount of zinc paste injected, but also to use the control unit 5 to precisely control the servo cylinder 4. During the zinc paste injection process, the needle 12 can be inserted into the bottom of the battery steel shell 100. Then, while the zinc paste injection machine 1 injects zinc paste, the servo cylinder 4 drives the battery steel shell 100 downward, gradually injecting zinc paste into the battery steel shell 100.

[0020] Compared to the traditional method of manual weighing and injection, this novel battery zinc paste injection device not only achieves automatic zinc paste injection, but also allows the weighing module 3 to weigh the battery steel shell 100 and the injected zinc paste in real time during the injection process, eliminating the need for manual weighing before and after injection. This simplifies operation, increases efficiency, and the real-time weighing by the weighing module 3 greatly facilitates precise control of the zinc paste injection volume, avoiding errors caused by insufficient injection volume after manual weighing or excessive injection. This results in both high efficiency and accuracy in zinc paste injection control. Furthermore, while injecting zinc paste, the servo cylinder 4 drives the battery steel shell 100 downwards, allowing the needle 12 to extend into the battery steel shell 100, injecting gradually from the lower part to the upper part. This effectively prevents air bubbles from forming inside the battery steel shell 100, resulting in better battery quality and more even weight distribution among individual batteries. This novel battery zinc paste injection device is simple in structure, small in size, convenient, efficient, and accurate in operation, making it particularly suitable for laboratory use.

[0021] In this utility model of a battery zinc paste injection device, preferably, the hopper 11 is a cone shape that is wider at the top and narrower at the bottom. The cone shape, wider at the top and narrower at the bottom, is more conducive to the downward output of zinc paste.

[0022] In this utility model of a battery zinc paste injection device, preferably, the top of the hopper 11 is open. The open design facilitates the loading of the paste.

[0023] In this utility model of a battery zinc paste injection device, preferably, the steel shell fixing base 2 is a vertical sleeve structure. The battery steel shell 100 is directly or indirectly inserted into the steel shell fixing base 2, and the steel shell fixing base 2 positions the battery steel shell 100.

[0024] In this utility model of a battery zinc paste injection device, preferably, a battery steel shell 100 is coaxially inserted into a carrier 101, the outer diameter of the carrier 101 being consistent with the inner diameter of the steel shell fixing seat 2, and the carrier 101 being vertically inserted into the steel shell fixing seat 2. Alternatively, the inner diameter of the steel shell fixing seat 2 can be consistent with the outer diameter of the battery steel shell 100, with the battery steel shell 100 directly inserted into the steel shell fixing seat 2, which positions the battery steel shell 100. Another option is that the inner diameter of the steel shell fixing seat 2 can be consistent with the outer diameter of the carrier 101, with the battery steel shell 100 coaxially inserted into the carrier 101, and the carrier 101 being vertically inserted into the steel shell fixing seat 2, which positions the steel shell fixing seat 2 and the carrier 101 within it. Because the bottom of the battery casing has a protruding head that forms the positive electrode, and the bottom surface of the battery casing is not flat, the direct structure for positioning the battery casing needs to have a structure that matches it. Therefore, battery manufacturers often keep a large number of carriers on hand. These carriers 101 not only have an inner diameter that matches the outer diameter of the battery casing 100, but also have a groove on their inner bottom surface that matches the battery casing 100. In this invention, by using the carrier 101, the battery casing 100 is first coaxially confined within the carrier 101. The opening of the casing fixing seat 2 does not have special requirements; only a normal hole that matches the carrier 101 is needed. In other words, by using the common and readily available carrier 101, the setting of the casing fixing seat 2 can be simplified. Furthermore, when the battery casing 100 is removed after zinc paste is injected into it, the carrier 101 can be removed along with it, facilitating the placement of the battery casing 100 after removal.

[0025] In this utility model battery zinc paste injection device, preferably, the steel shell fixing seat 2 and the injection needle tube 12 are coaxial.

[0026] In the present invention, the battery zinc paste injection device preferably has the servo electric cylinder 4 vertically fixed on the frame 10.

[0027] This utility model relates to a battery zinc paste injection device. The zinc paste injection machine 1 mainly consists of a zinc paste pump, which provides driving force for the injection of zinc paste. The weighing module 3 is an electronic weighing module, which can be the weighing structure disclosed in Chinese patent applications with patent numbers 201822054025.6, 202322898769.7, and 202021396293.7. The servo electric cylinder 4 consists of a servo motor and a lead screw. The control unit 5 is a PLC system or a microcontroller system. The zinc paste injection machine 1, the steel shell fixing base 2, the weighing module 3, and the servo electric cylinder 4 are all existing structures, and will not be described in detail in this utility model.

[0028] For those skilled in the art to which this utility model pertains, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered to fall within the protection scope of this utility model.

Claims

1. A battery zinc paste injection device, characterized in that: The system includes a frame, a zinc paste injection machine, a steel shell mounting base, a weighing module, and a servo cylinder. The zinc paste injection machine is fixedly mounted on the frame. A hopper is located at the upper inlet of the zinc paste injection machine, and an injection needle is vertically positioned at the bottom outlet. The diameter of the needle is smaller than the inner diameter of the battery steel shell, and the vertical length of the needle is not less than the axial length of the battery steel shell. The weighing module is fixedly mounted on the servo cylinder and is movable by the servo cylinder. The steel shell mounting base is fixedly mounted on the weighing module and is located directly below the injection needle. The injection needle is positioned on the lifting path of the battery steel shell on the steel shell mounting base. The weighing module, the zinc paste injection machine, and the servo cylinder are all electrically connected to the same control unit.

2. The battery zinc paste injection device according to claim 1, characterized in that: The hopper is cone-shaped, wider at the top and narrower at the bottom.

3. The battery zinc paste injection device according to claim 2, characterized in that: The silo has an open top.

4. The battery zinc paste injection device according to claim 1, characterized in that: The steel shell fixing base is a vertical sleeve structure.

5. The battery zinc paste injection device according to claim 4, characterized in that: The battery steel shell is coaxially inserted into the carrier, and the outer diameter of the carrier is consistent with the inner diameter of the steel shell fixing seat. The carrier is vertically inserted into the steel shell fixing seat.

6. The battery zinc paste injection device according to claim 1, characterized in that: The steel shell fixing base is coaxial with the injection needle tube.

7. The battery zinc paste injection device according to claim 1, characterized in that: The servo electric cylinder is vertically fixed on the frame.

8. The battery zinc paste injection device according to claim 1, characterized in that: The control unit is a PLC system or a microcontroller system.

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