An automatic liquid injection device

By using an adjustable quantitative filling cylinder and control valve system, the problem of quantitative filling in traditional battery electrolyte filling equipment has been solved, achieving precise filling of battery electrolyte and improving the quality and efficiency of battery production.

CN224418005UActive Publication Date: 2026-06-26HUBEI XIONGTAO LITHIUM BATTERY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUBEI XIONGTAO LITHIUM BATTERY CO LTD
Filing Date
2025-07-31
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Traditional battery electrolyte filling equipment cannot achieve quantitative electrolyte filling, resulting in electrolyte volume deviation and affecting battery performance.

Method used

It adopts an adjustable quantitative filling cylinder and control valve system, which achieves precise filling of electrolyte through an adjustable plunger rod and telescopic push rod. Combined with the drive unit and reversing switch to control the liquid flow direction, it ensures quantitative filling.

Benefits of technology

It improves the accuracy and efficiency of battery electrolyte filling, solves the volume deviation problem in the battery production process, and meets the usage requirements.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of automatic quantitative liquid injection equipment, including filling machine, filling machine includes pedestal and the liquid storage cylinder of being set on pedestal, the pedestal of filling machine is also provided with adjustable ration cylinder, the lower part of liquid storage cylinder is provided with control valve, adjustable ration cylinder is communicated with control valve, the inside sliding of adjustable ration cylinder is provided with plunger rod, the outside of adjustable ration cylinder is provided with first telescopic push rod, first telescopic push rod can pull plunger rod and the capacity of adjustable ration cylinder filled is adjusted, the utility model can adjust the capacity of adjustable ration cylinder by first telescopic push rod, cooperate control valve to realize the filling operation of different battery electrolyte capacity, more convenient and accurate and efficient, greatly improve the accuracy and filling efficiency of battery electrolyte filling.
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Description

Technical Field

[0001] This utility model relates to the field of liquid injection equipment technology, specifically to an automatic quantitative liquid injection device. Background Technology

[0002] A battery is a device that converts chemical energy into electrical energy. It contains an electrolyte solution and metal electrodes to generate an electric current. With technological advancements, the term "battery" now broadly refers to small devices that generate electrical energy, such as solar cells. The main performance parameters of a battery include electromotive force, capacity, specific energy, and resistance. Using batteries as an energy source provides a stable voltage, stable current, long-term stable power supply, and minimal susceptibility to external influences. Batteries are simple in structure, portable, easy to charge and discharge, unaffected by external climate and temperature, and offer stable and reliable performance, playing a significant role in various aspects of modern life. The battery manufacturing process involves various equipment, including the electrolyte injection process. "Electrolyte" is a broad term, and its meaning varies considerably across different industries. There are electrolytes used in biological systems, electrolytes applied in the battery industry, and electrolytes used in electrolytic capacitors, supercapacitors, and other industries. The composition of electrolytes used in different industries varies greatly, sometimes completely.

[0003] The electrolyte injection equipment used in the battery production process generally has a simple external structure and cannot perform quantitative electrolyte injection operations during use. This results in volume deviation of the electrolyte during the battery production process, affecting the battery's performance and failing to meet people's needs. In order to address the above situation, technological innovation is carried out on the basis of existing electrolyte injection equipment. Utility Model Content

[0004] In view of this, the present invention provides an automatic quantitative electrolyte injection device, which can realize rapid and efficient quantitative electrolyte injection through an adjustable quantitative filling cylinder. This solves the problem that traditional battery electrolyte injection devices cannot form a quantitative injection operation during use, resulting in volume deviation of electrolyte in the battery production process, affecting battery performance and failing to meet people's needs.

[0005] To solve the above-mentioned technical problems, this utility model provides an automatic quantitative liquid injection device, including a filling machine. The filling machine includes a base and a liquid storage cylinder disposed on the base. An adjustable quantitative cylinder is also disposed on the base of the filling machine. A control valve is disposed at the lower part of the liquid storage cylinder. The adjustable quantitative cylinder is connected to the control valve. A plunger rod is slidably disposed inside the adjustable quantitative cylinder. A first telescopic push rod is disposed on the outside of the adjustable quantitative cylinder. The first telescopic push rod can pull the plunger rod to adjust the filling capacity in the adjustable quantitative cylinder. This utility model can adjust the capacity of the adjustable quantitative cylinder through the first telescopic push rod, and in conjunction with the control valve, realize the filling operation of different battery electrolyte capacities, which is more convenient, accurate and efficient, and greatly improves the accuracy and efficiency of battery electrolyte filling.

[0006] The control valve is a three-way switch valve. Inside the control valve, there is a reversing switch to adjust the flow direction of the liquid. On the outside of the control valve, there is a drive component to drive the flow direction of the liquid. This invention can adjust the flow direction of the liquid in the control valve through the action of the drive component, realizing convenient and flexible control and shut-off of the filling operation, making the operation more convenient.

[0007] The driving component includes a second telescopic push rod hinged to the base. A connecting plate is hinged to the output rod end of the second telescopic push rod, and the other end of the connecting plate is connected to the reversing switch of the control valve. This invention can conveniently and quickly adjust the flow direction of the liquid in the control valve by pushing the connecting plate and the reversing switch at the other end of the connecting plate through the extension and retraction of the output rod of the second telescopic push rod. This enables quantitative dispensing and quantitative filling operations, making operation more convenient.

[0008] A sliding plate is slidably mounted on the upper part of the base. One end of the sliding plate is connected to the plunger rod, and the other end of the sliding plate is connected to the output rod of the first telescopic push rod. This utility model can push the sliding plate and pull the plunger rod by extending and retracting the output rod of the first telescopic push rod to realize the real-time adjustment of the volume of the adjustable metering cylinder, which is convenient for filling electrolytes of various battery specifications.

[0009] Both the first and second telescopic push rods are electric or hydraulic push rods.

[0010] The first port of the control valve is connected to the outlet of the liquid storage cylinder, the second port of the control valve is connected to the outlet of the adjustable metering cylinder, and a filling head is provided at the third port of the control valve. This utility model can easily fill the liquid to be filled into the required cavity through the function of the filling head.

[0011] The filling head is equipped with a shut-off valve, which allows the opening and closing of the filling head to be controlled, making the process more convenient.

[0012] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0013] 1. Adjustable filling volume per batch: This utility model can conveniently and quickly adjust the effective filling volume of the adjustable metering cylinder by extending and retracting the output rod of the first telescopic push rod, which pulls the slide plate and the plunger rod on the slide plate, greatly improving the accuracy of the filling operation.

[0014] 2. Controllable quantitative liquid inlet and quantitative filling operation: This utility model can conveniently and quickly adjust and control the flow direction of the liquid in the storage cylinder through the control valve, so as to quantitatively draw it into the adjustable quantitative cylinder and smoothly fill it into the cavity to be filled through the action of the control valve.

[0015] 3. Easy to control the opening and closing of the filling head: This utility model can achieve rapid closing and opening of the filling head through the shut-off valve set on the filling head, which facilitates the smooth filling of liquid in the filling head and the shut-off operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the automatic quantitative liquid injection device of this utility model;

[0017] Figure 2 This is a top view of the automatic quantitative liquid injection device of this utility model;

[0018] Figure 3 This is a structural schematic diagram of the automatic quantitative liquid injection device of this utility model from another perspective.

[0019] Explanation of reference numerals in the attached drawings: 100, filling machine; 101, base; 102, liquid storage tank; 200, adjustable metering cylinder; 300, control valve; 301, reversing switch; 400, plunger rod; 500, first telescopic push rod; 600, driving component; 601, second telescopic push rod; 602, connecting plate; 700, sliding plate; 800, shut-off valve. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-3 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0021] like Figure 1-3As shown: This embodiment provides an automatic quantitative liquid dispensing device, including a filling machine 100. The filling machine 100 includes a base 101 and a liquid storage cylinder 102 disposed on the base 101. The liquid storage cylinder 102 is fixed to the base 101 by a mounting bracket, and the lower part of the liquid storage cylinder 102 is a certain distance from the upper part of the base 101. This distance is preferably for the installation of a control valve 300. For example, if the height of the control valve 300 is 50 mm, then this distance is between 50-55 mm. The lower part of the liquid storage cylinder 102 and the control valve 300 are connected by a... With the pipeline connected, an adjustable metering cylinder 200 is also installed on the base 101 of the filling machine 100. The outer wall of the adjustable metering cylinder 200 has numerical graduation markings. A control valve 300 is installed at the lower part of the liquid storage cylinder 102. The control valve 300 is a three-way switch valve. A reversing switch 301 is installed inside the control valve 300 to adjust the liquid flow direction. A drive component 600 is installed on the outside of the control valve 300 to drive the liquid flow direction. The liquid flow direction within the control valve 300 is adjusted by the action of the drive component 600, thus achieving... The adjustable metering cylinder 200 is connected to one of the interfaces of the control valve 300, which provides convenient and flexible control and shut-off during the filling process. A plunger rod 400 is slidably mounted inside the adjustable metering cylinder 200, and a sealing piston is located at the end of the plunger rod 400. A sealing ring is provided between the sealing piston and the inner wall of the adjustable metering cylinder 200. A first telescopic push rod 500 is located on the outside of the adjustable metering cylinder 200. The first telescopic push rod 500 can pull the plunger rod 400 to adjust the filling capacity inside the adjustable metering cylinder 200. The control valve 300... The first interface of the control valve 300 is connected to the outlet of the liquid storage cylinder 102, the second interface of the control valve 300 is connected to the outlet of the adjustable metering cylinder 200, and the third interface of the control valve 300 is provided with a filling head. This utility model can easily fill the liquid to be filled into the required cavity through the function of the filling head. The capacity of the adjustable metering cylinder 200 can be adjusted by the first telescopic push rod 500. With the help of the control valve 300, filling operations of different battery electrolyte capacities can be realized, which is more convenient, accurate and efficient, and greatly improves the accuracy and efficiency of battery electrolyte filling.

[0022] According to another embodiment of the present invention, such as Figure 1 and Figure 2As shown, the driving component 600 includes a second telescopic push rod 601 hinged to the base 101. Both the first telescopic push rod 500 and the second telescopic push rod are electric or hydraulic push rods. A connecting plate 602 is hinged to the output rod end of the second telescopic push rod 601. The other end of the connecting plate 602 is connected to the reversing switch 301 of the control valve 300. This invention can conveniently and quickly adjust the flow direction of the liquid in the control valve 300 by pushing the connecting plate 602 and the reversing switch 301 at the other end of the connecting plate 602 to rotate by extending and retracting the output rod of the second telescopic push rod 601. This realizes quantitative liquid dispensing and quantitative filling operations, making operation more convenient.

[0023] The drive unit 600 can also be a servo motor. The output shaft of the servo motor is fixed together with the reversing switch 301. The rotation of the output shaft of the servo motor can realize the rapid adjustment of the liquid flow direction in the control valve 300.

[0024] According to another embodiment of the present invention, such as Figure 1 and Figure 3 As shown, a sliding plate 700 is slidably mounted on the upper part of the base 101. One end of the sliding plate 700 is connected to the plunger rod 400, and the other end of the sliding plate 700 is connected to the output rod of the first telescopic push rod 500. This utility model can push the sliding plate 700 and pull the plunger rod 400 by extending and retracting the output rod of the first telescopic push rod 500 to realize the real-time adjustment of the volume of the adjustable metering cylinder 200, which is convenient for filling electrolytes of various battery specifications.

[0025] The filling head is equipped with a shut-off valve 800, and a third telescopic push rod is provided on the upper part of the filling head. The third telescopic push rod is a hydraulic push rod or an electric push rod. The extension of the output rod of the third telescopic push rod can push the shut-off valve 800 downward to efficiently discharge the residual liquid in the flow chamber of the filling head. Moreover, the opening and closing operation of the filling head can be controlled by the shut-off valve 800, which is more convenient.

[0026] How to use this utility model:

[0027] First, it needs to be clarified that the liquid filling equipment involved in this utility model is mainly used for filling liquids or colloids. This utility model takes the filling of battery electrolyte as an example to describe its usage method in detail. When it is necessary to quantitatively fill the electrolyte in the battery casing, the first telescopic push rod 500 is activated by the filling capacity of the electrolyte in the battery casing to pull the slide plate 700 and the plunger rod 400 to adjust the effective filling volume of the adjustable metering cylinder 200 to match the filling amount of the battery casing to be filled. Then, the output rod of the second telescopic push rod 601 is activated to extend to push the reversing switch 301 to connect the channel between the metering filling cylinder and the filling head. Then, the output of the first telescopic push rod 500 is activated. The extension rod retracts to push the plunger rod 400, discharging the liquid to be filled from the adjustable metering cylinder 200 through the filling head into the battery casing. After filling is completed, the output rod of the third telescopic push rod extends to push the shut-off valve 800 to completely and efficiently discharge any remaining liquid in the filling head, greatly improving the filling accuracy and automation. This utility model can achieve rapid and efficient quantitative electrolyte injection through the adjustable metering filling cylinder, solving the problem that traditional battery filling equipment cannot form a quantitative injection operation during use, resulting in volume deviation of the electrolyte during battery production, affecting battery performance and failing to meet user needs.

[0028] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An automatic quantitative liquid dispensing device, comprising a filling machine (100), the filling machine (100) comprising a base (101) and a liquid storage cylinder (102) disposed on the base (101), characterized in that: An adjustable metering cylinder (200) is also provided on the base (101) of the filling machine (100). A control valve (300) is provided at the lower part of the liquid storage cylinder (102). The adjustable metering cylinder (200) is connected to the control valve (300). A plunger rod (400) is slidably provided inside the adjustable metering cylinder (200). A first telescopic push rod (500) is provided on the outside of the adjustable metering cylinder (200). The first telescopic push rod (500) can pull the plunger rod (400) to adjust the filling capacity in the adjustable metering cylinder (200).

2. The automatic quantitative liquid injection device as described in claim 1, characterized in that: The control valve (300) is a three-way switch valve. A reversing switch (301) for adjusting the liquid flow direction inside the control valve (300) is provided inside the control valve (300). A driving component (600) for driving the liquid flow direction inside the control valve (300) is provided on the outside of the control valve (300).

3. The automatic quantitative liquid injection device as described in claim 2, characterized in that: The drive unit (600) includes a second telescopic push rod (601) hinged on the base (101), and a connecting plate (602) is hinged to the output rod end of the second telescopic push rod (601). The other end of the connecting plate (602) is connected to the reversing switch (301) of the control valve (300).

4. The automatic quantitative liquid injection device as described in claim 1, characterized in that: A sliding plate (700) is slidably disposed on the upper part of the base (101). One end of the sliding plate (700) is connected to the plunger rod (400), and the other end of the sliding plate (700) is connected to the output rod of the first telescopic push rod (500).

5. The automatic quantitative liquid injection device as described in claim 3, characterized in that: Both the first telescopic push rod (500) and the second telescopic rod are electric push rods or hydraulic push rods.

6. The automatic quantitative liquid injection device as described in claim 5, characterized in that: The first port of the control valve (300) is connected to the outlet of the liquid storage cylinder (102), the second port of the control valve (300) is connected to the outlet of the adjustable metering cylinder (200), and a filling head is provided at the third port of the control valve (300).

7. The automatic quantitative liquid injection device as described in claim 6, characterized in that: The filling head is equipped with a shut-off valve (800).