CN218957986U

CN218957986U - Battery priming device with liquid storage structure

Info

Publication number: CN218957986U
Application number: CN202222748035.6U
Authority: CN
Inventors: 王林; 胡科敏; 吴帮金
Original assignee: Shenzhen Zhongji Automation Co Ltd
Current assignee: Shenzhen Zhongji Automation Co Ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-05-02
Anticipated expiration: 2032-10-19

Abstract

The utility model relates to the technical field of battery liquid injection, in particular to a battery liquid injection device with a liquid storage structure, wherein a liquid injection component consists of a liquid injection module and a liquid storage module; the liquid injection module comprises a liquid injection needle and a liquid outlet valve; the liquid storage module comprises a liquid storage cylinder, an air inlet valve, a liquid storage cylinder and a piston; the air inlet valve and the liquid inlet valve are both communicated with the bottom of the liquid storage cylinder; the piston is connected in the liquid storage cylinder in a sliding way; the air inlet valve is communicated with the nitrogen pipe; the bottom of the liquid storage cylinder is provided with a liquid discharge joint; the liquid discharging joint is communicated with the liquid injection needle through a liquid outlet valve. When the structure is used, the residual liquid of the electrolyte is discharged by injecting nitrogen into the pipeline, so that the residual liquid of the electrolyte in the liquid injection needle can be discharged into the battery, the utilization rate of the electrolyte is improved, the phenomenon of liquid dripping under the condition of non-liquid injection is reduced, and the pollution of the electrolyte to the surface of the battery and the battery clamping jig is reduced.

Description

Battery priming device with liquid storage structure

Technical Field

The utility model relates to the technical field of battery liquid injection, in particular to a battery liquid injection device with a liquid storage structure.

Background

In the production process of the battery, electrolyte needs to be injected into the battery; after the batteries are positioned in batches through the jig, the batteries are sent into the closed space, and then the liquid injection needle extends into the batteries for liquid injection. When the battery is filled with electrolyte, the battery is required to be placed in a closed environment; the tray with the jig is sent into the vacuumizing chamber, a closed cavity is formed after the tray and the vacuumizing chamber are closed, and then the cavity is vacuumized through the vacuumizing tube until the requirement of liquid injection is met.

However, in the existing battery liquid injection mechanism, the injection amount of electrolyte is completely controlled by a flowmeter; during liquid injection, a liquid injection needle is directly pumped by a liquid injection pump (a flowmeter is connected between the liquid injection pump and the liquid injection needle), and then the needle head part of the liquid injection needle is extruded into the battery; the liquid injection structure is simple in structure, but electrolyte is always remained on the inner wall of the liquid injection needle; the liquid injection amount of the battery is not ensured (generally smaller than the set value), the electrolyte remains in the liquid injection needle, and the liquid dripping phenomenon occurs under the condition of non-liquid injection, so that the surface of the battery is polluted and the jig for clamping the battery is used.

Disclosure of Invention

The utility model aims to overcome the defects and shortcomings of the prior art and provide a battery priming device with a liquid storage structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model relates to a battery liquid injection device with a liquid storage structure, which comprises a liquid storage bracket and a plurality of liquid injection components arranged on the liquid storage bracket; the liquid injection assembly consists of a liquid injection module and a liquid storage module;

the liquid injection module comprises a liquid injection needle and a liquid outlet valve;

the liquid storage module comprises a liquid storage cylinder, an air inlet valve, a liquid storage cylinder and a piston; the air inlet valve and the liquid inlet valve are both communicated with the bottom of the liquid storage cylinder; the piston is connected in the liquid storage cylinder in a sliding way; the air inlet valve is communicated with the nitrogen pipe;

the bottom of the liquid storage cylinder is provided with a liquid discharge joint; the liquid discharging joint is communicated with the liquid injection needle through a liquid outlet valve.

Further, a liquid injection lifting unit capable of driving the liquid injection needle to do lifting motion is arranged on the liquid storage bracket; the liquid injection lifting unit comprises a liquid injection needle lifting cylinder, a liquid injection upright post fixed on the liquid storage bracket, a liquid injection lifting guide rail fixed on the liquid injection upright post and a liquid injection needle sliding seat which is connected on the liquid injection lifting guide rail in a sliding way; the liquid injection needle and the liquid outlet valve are both fixed on the liquid injection needle sliding seat; the two ends of the liquid injection needle lifting cylinder are respectively fixed on the liquid storage bracket and the liquid injection needle sliding seat.

Further, a liquid injection needle guide sleeve is fixed on the liquid injection upright post; the liquid injection needle is connected with the inner hole of the liquid injection needle guide sleeve in a sliding mode.

Further, a piston limit ring which surrounds one circle is arranged in the inner cavity of the liquid storage cylinder; the air inlet and the upper liquid inlet of the liquid storage cylinder are arranged below the piston limit ring.

After the structure is adopted, the utility model has the beneficial effects that: the utility model relates to a battery priming device with a liquid storage structure.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a block diagram of a plurality of priming modules;

FIG. 3 is a cross-sectional view of a plurality of reservoir modules;

FIG. 4 is a perspective view of a plurality of reservoir modules;

FIG. 5 is a block diagram of the injection needle and the outlet valve connected to the injection lifting unit;

reference numerals illustrate:

1. a liquid storage cylinder; 2. a liquid storage bracket; 3. an intake valve; 4. a liquid inlet valve; 5. a liquid injection needle sliding seat;

6. a liquid injection needle; 7. a liquid outlet valve; 8. a liquid injection needle lifting cylinder; 9. a liquid storage cylinder; 901. an air inlet;

902. an upper liquid inlet; 903. a piston limit ring; 10. a piston; 11. a liquid discharge joint;

12. a liquid injection column; 13. a liquid injection lifting guide rail; 14. the liquid injection needle guide sleeve.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 5, the battery priming device with a liquid storage structure according to the present utility model includes a liquid storage bracket 2 and a plurality of liquid injection components disposed on the liquid storage bracket 2; the liquid injection assembly consists of a liquid injection module and a liquid storage module;

the liquid injection module comprises a liquid injection needle 6 and a liquid outlet valve 7;

the liquid storage module comprises a liquid storage cylinder 1, an air inlet valve 3, a liquid inlet valve 4, a liquid storage cylinder 9 and a piston 10; the air inlet valve 3 and the liquid inlet valve 4 are both communicated with the bottom of the liquid storage cylinder 9; the piston 10 is connected in the liquid storage cylinder 9 in a sliding way; the air inlet valve 3 is connected with a nitrogen pipe;

the bottom of the liquid storage cylinder 9 is provided with a liquid discharge joint 11; the liquid discharge joint 11 is communicated with the liquid injection needle 6 through the liquid outlet valve 7;

the air inlet valve 3 is connected to a nitrogen source, and the air inlet valve 3 is communicated with the inner cavity of the liquid storage cylinder 9 through an air inlet 901; the liquid inlet valve 4 is connected to the liquid injection pump, and the liquid inlet valve 4 is communicated with the inner cavity of the liquid storage cylinder 9 through the upper liquid inlet 902; in the liquid storage stage, the liquid storage cylinder 1 is in a retracted position, the liquid outlet valve 7 and the air inlet valve 3 are closed, the liquid inlet valve 4 is opened, and the liquid injection pump pumps electrolyte into the inner cavity of the liquid storage cylinder 9 according to a set value; the piston 10 automatically rises by the pressure of the pumped electrolyte; after the amount of electrolyte in the liquid storage cylinder 9 is monitored by a flowmeter and the set value is stopped, the liquid inlet valve 4 is closed; then the liquid outlet valve 7 is opened, the liquid storage cylinder 1 drives the piston 10 to press downwards, and electrolyte in the liquid storage cylinder 9 is injected into the battery after sequentially passing through the liquid discharge joint 11, the liquid outlet valve 7 and the liquid injection needle 6; then, the liquid outlet valve 7 is closed, the air inlet valve 3 is opened, nitrogen is injected into the liquid storage barrel 9, so that the air pressure in the liquid storage barrel 9 is consistent with that of the air tank, the liquid outlet valve 7 is opened, and residual liquid in the liquid outlet valve 7 and the liquid injection needle 6 is pressed into the battery; according to the structure, the residual liquid of the electrolyte is discharged by injecting nitrogen into the pipeline, so that the residual liquid of the electrolyte in the liquid injection needle can be discharged into the battery, the utilization rate of the electrolyte is improved, the liquid dropping phenomenon is caused under the condition of non-liquid injection, and the pollution of the electrolyte to the battery surface and the battery clamping jig is reduced.

As a preferable mode of the utility model, the liquid storage bracket 2 is provided with a liquid injection lifting unit capable of driving the liquid injection needle 6 to do lifting motion; the liquid injection lifting unit comprises a liquid injection needle lifting cylinder 8, a liquid injection upright post 12 fixed on the liquid storage bracket 2, a liquid injection lifting guide rail 13 fixed on the liquid injection upright post 12 and a liquid injection needle sliding seat 5 which is connected on the liquid injection lifting guide rail 13 in a sliding way; the liquid injection needle 6 and the liquid outlet valve 7 are both fixed on the liquid injection needle sliding seat 5; two ends of the liquid injection needle lifting cylinder 8 are respectively fixed on the liquid storage bracket 2 and the liquid injection needle sliding seat 5; the liquid injection needle lifting cylinder 8 can drive the liquid injection needle sliding seat 5, the liquid injection needle 6 and the liquid outlet valve 7 to do lifting movement, so that the lifting movement of the liquid injection needle 6 for inserting and extending out of the battery air bag is realized, and the liquid outlet height of the liquid injection needle 6 can be controlled.

As a preferred mode of the present utility model, the injection column 12 is fixed with an injection needle guide sleeve 14; the liquid injection needle 6 is connected with the inner hole of the liquid injection needle guide sleeve 14 in a sliding way; the needle guide sleeve 14 serves for guided alignment of the needle 6 so that the needle 6 can be inserted accurately into the air pocket of the battery below.

As a preferable mode of the utility model, a piston limit ring 903 which surrounds one circle is arranged in the inner cavity of the liquid storage cylinder 9; the air inlet 901 and the upper liquid inlet 902 of the liquid storage barrel 9 are arranged below the piston limit ring 903; the piston limit ring 903 is used for limiting the piston 10, so that the piston 10 can not block the air inlet 901 from entering nitrogen during liquid injection

When the liquid storage device is used, in the liquid storage stage, the liquid storage cylinder is in a retracted position, the liquid outlet valve and the air inlet valve are closed, the liquid inlet valve is opened, and the liquid injection pump pumps electrolyte into the inner cavity of the liquid storage cylinder according to a set value; the piston automatically rises by pumping electrolyte pressure; after the amount of electrolyte in the liquid storage cylinder is monitored by the flowmeter to be at a set value, the liquid inlet valve is closed; then the liquid outlet valve is opened, the liquid storage cylinder drives the piston to press down, and electrolyte in the liquid storage cylinder 9 is injected into the battery after sequentially passing through the liquid discharge joint, the liquid outlet valve and the liquid injection needle; then, the liquid outlet valve 7 is closed, the air inlet valve is opened, nitrogen is injected into the liquid storage barrel, so that the air pressure in the liquid storage barrel is consistent with that of the air tank, and the liquid outlet valve is opened to press residual liquid in the liquid outlet valve and the liquid injection needle into the battery; according to the structure, the residual liquid of the electrolyte is discharged by injecting nitrogen into the pipeline, so that the residual liquid of the electrolyte in the liquid injection needle can be discharged into the battery, the utilization rate of the electrolyte is improved, the liquid dropping phenomenon is caused under the condition of non-liquid injection, and the pollution of the electrolyte to the battery surface and the battery clamping jig is reduced.

The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are therefore intended to be embraced therein.

Claims

1. The utility model provides a take battery priming device of stock solution structure which characterized in that: the device comprises a liquid storage bracket (2) and a plurality of liquid injection components arranged on the liquid storage bracket (2); the liquid injection assembly consists of a liquid injection module and a liquid storage module;

the liquid injection module comprises a liquid injection needle (6) and a liquid outlet valve (7);

the liquid storage module comprises a liquid storage cylinder (1), an air inlet valve (3), a liquid inlet valve (4), a liquid storage cylinder (9) and a piston (10); the air inlet valve (3) and the liquid inlet valve (4) are both communicated with the bottom of the liquid storage cylinder (9); the piston (10) is connected in the liquid storage cylinder (9) in a sliding way; the air inlet valve (3) is communicated with the nitrogen pipe;

the bottom of the liquid storage cylinder (9) is provided with a liquid discharge joint (11); the liquid discharging joint (11) is communicated with the liquid injection needle (6) through the liquid outlet valve (7).

2. The battery priming device with a reservoir structure of claim 1, wherein: the liquid storage bracket (2) is provided with a liquid injection lifting unit capable of driving the liquid injection needle (6) to do lifting movement; the liquid injection lifting unit comprises a liquid injection needle lifting cylinder (8), a liquid injection upright post (12) fixed on the liquid storage bracket (2), a liquid injection lifting guide rail (13) fixed on the liquid injection upright post (12) and a liquid injection needle sliding seat (5) which is connected on the liquid injection lifting guide rail (13) in a sliding way; the liquid injection needle (6) and the liquid outlet valve (7) are both fixed on the liquid injection needle sliding seat (5); the two ends of the liquid injection needle lifting cylinder (8) are respectively fixed on the liquid storage bracket (2) and the liquid injection needle sliding seat (5).

3. The battery priming device with a reservoir structure of claim 2, wherein: a liquid injection needle guide sleeve (14) is fixed on the liquid injection upright post (12); the liquid injection needle (6) is connected with the inner hole of the liquid injection needle guide sleeve (14) in a sliding way.

4. The battery priming device with a reservoir structure of claim 1, wherein: a piston limit ring (903) which surrounds one circle is arranged in the inner cavity of the liquid storage cylinder (9); an air inlet (901) and an upper liquid inlet (902) of the liquid storage barrel (9) are arranged below the piston limit ring (903).