阅读说明：本技术 一种排液装置及排液方法 (Liquid drainage device and liquid drainage method ) 是由 邱立国 周理 廖文杰 肖俊 于 2019-09-06 设计创作，主要内容包括：本发明公开了一种排液装置,包括：过滤器,具有第一排液端；储液罐,具有第一进液端和第二排液端,储液罐上设置有液位传感器,第一进液端连接第一排液端；第一阀门,位于第一排液端与第一进液端之间,第一阀门连接第一排液端与第一进液端；通气阀,与储液罐连接,通气阀能够连通外界空气与储液罐；第二阀门,与第二排液端连接；控制装置,与液位传感器电连接,控制装置与第一阀门、第二阀门和通气阀驱动连接；应用本发明的排液装置,可以在不影响过滤器工作的前提下实现自动排液,本发明还提供了一种排液方法。(The invention discloses a liquid discharge device, comprising: a filter having a first drain end; the liquid storage tank is provided with a first liquid inlet end and a second liquid discharge end, a liquid level sensor is arranged on the liquid storage tank, and the first liquid inlet end is connected with the first liquid discharge end; the first valve is positioned between the first liquid discharging end and the first liquid inlet end and is connected with the first liquid discharging end and the first liquid inlet end; the vent valve is connected with the liquid storage tank and can communicate the outside air with the liquid storage tank; the second valve is connected with the second liquid discharging end; the control device is electrically connected with the liquid level sensor and is in driving connection with the first valve, the second valve and the vent valve; the liquid discharge device can realize automatic liquid discharge on the premise of not influencing the work of the filter, and the invention also provides a liquid discharge method.)

1. A drain, comprising:

a filter (1) having a first drain end;

the liquid storage tank (4) is provided with a first liquid inlet end and a second liquid discharge end, a liquid level sensor (41) is arranged on the liquid storage tank (4), and the first liquid inlet end is connected with the first liquid discharge end;

the first valve (2) is positioned between the first liquid discharging end and the first liquid inlet end, and the first valve (2) is connected with the first liquid discharging end and the first liquid inlet end;

the vent valve (3) is connected with the liquid storage tank (4), and the vent valve (3) can communicate the outside air with the liquid storage tank (4);

the second valve (5) is connected with the second liquid discharging end;

the control device is electrically connected with the liquid level sensor (41), and is in driving connection with the first valve (2), the second valve (5) and the vent valve (3).

2. Drain as claimed in claim 1, characterized in that said first valve (2), said second valve (5) and said vent valve (3) are pneumatic valves, said control device being able to control a gas source (8) to supply gas to said first valve (2), said second valve (5) and said vent valve (3).

3. Drain according to claim 2, characterized in that it further comprises a first solenoid valve assembly (71) and a second solenoid valve assembly (72), said first solenoid valve assembly (71) and said second solenoid valve assembly (72) each having a control gas circuit, said first solenoid valve assembly (71) and said second solenoid valve assembly (72) each being electrically connected to said control device, said first solenoid valve assembly (71) being connected to said first valve (2), said second solenoid valve assembly (72) being connected to said second valve (5) and to said vent valve (3).

4. A draining arrangement according to claim 3, wherein the first valve (2) comprises a first inlet port (21) and a second inlet port (22), both the first inlet port (21) and the second inlet port (22) being connected to the first solenoid valve assembly (71); the second valve (5) comprises a third air inlet (51) and a fourth air inlet (52), and the third air inlet (51) and the fourth air inlet (52) are both connected with the second electromagnetic valve component (72); the air inlet end of the vent valve (3) is connected with the third air inlet (51).

5. The draining device according to claim 2, characterized in that it further comprises a plurality of silencers mounted on the air supply line of the air supply (8) feeding the first valve (2), the second valve (5) and the venting valve (3).

6. A liquid discharge method for controlling the liquid discharge device according to claim 1 to perform liquid discharge, comprising:

s1, setting the liquid level sensor (41) to detect the liquid level position;

s2, when the liquid level sensor (41) detects a full liquid signal, the liquid level sensor (41) transmits the full liquid signal to the control device;

s3, when the control device receives a full liquid signal transmitted by a liquid level sensor (41), the control device closes the first valve (2) and opens the second valve (5) and the vent valve (3).

7. The liquid discharge method according to claim 6, further comprising:

s4, after the first valve (2) is closed, the second valve (5) and the vent valve (3) are opened and preset time passes, acquiring a liquid full signal of the liquid level sensor (41);

s51, when the full liquid signal is closed, the second valve (5) and the ventilation valve (3) are closed, and the first valve (2) is opened.

8. The liquid discharge method according to claim 7, further comprising:

and S52, when the full liquid signal is connected, sending out an alarm signal.

9. The liquid discharge method according to claim 7, wherein the step S51 includes: controlling a second solenoid valve assembly (72) to connect the air source (8) and the fourth air inlet (52); controlling a first solenoid valve assembly (71) to connect the air source (8) and the first air inlet (21).

10. The liquid discharge method according to claim 6, wherein the step S3 includes:

s31, controlling the first electromagnetic valve assembly (71) to connect the air source (8) and the second air inlet (22); and controlling a second electromagnetic valve assembly (72), connecting the air source (8) with the third air inlet (51), and connecting the air source (8) with the vent valve (3).

Technical Field

The invention relates to the field of lithium battery formation and capacity grading, in particular to a liquid discharge device and a liquid discharge method.

Background

In the negative pressure formation process of the lithium battery, gas generated by electrochemical reduction reaction is not completely discharged and remains in the battery wall, and volatilized electrolyte aerial fog can be brought out in the process of discharging residual bubbles through negative pressure, so that the aerial fog containing electrolyte needs to be converted into liquid by using a gas-liquid filter and separated, and the electrolyte collected in the gas-liquid filter is discharged; in the former negative pressure formation process, the manual valve opening and closing of a production line patrol worker is mainly used for liquid drainage, and the liquid drainage work is limited.

Disclosure of Invention

The invention aims to solve at least one technical problem in the prior art, and provides a liquid discharge device which can realize automatic collection and discharge of electrolyte without depending on manpower on the premise of ensuring the vacuum degree.

According to an aspect of the present invention, there is provided a liquid discharge apparatus including: a filter having a first drain end; the liquid storage tank is provided with a first liquid inlet end and a second liquid discharge end, a liquid level sensor is arranged on the liquid storage tank, and the first liquid inlet end is connected with the first liquid discharge end; the first valve is positioned between the first liquid discharging end and the first liquid inlet end and is connected with the first liquid discharging end and the first liquid inlet end; the vent valve is connected with the liquid storage tank and can communicate the outside air with the liquid storage tank; the second valve is connected with the second liquid discharging end; and the control device is electrically connected with the liquid level sensor and is in driving connection with the first valve, the second valve and the vent valve.

Further, the first valve, the second valve and the vent valve are pneumatic valves, and the control device can control the air source to supply air to the first valve, the second valve and the vent valve.

Further, the liquid discharge device further comprises a first electromagnetic valve assembly and a second electromagnetic valve assembly, the first electromagnetic valve assembly and the second electromagnetic valve assembly are both electrically connected with the control device, the first electromagnetic valve assembly is connected with the first valve, and the second electromagnetic valve assembly is connected with the second valve and the vent valve.

Further, the first valve comprises a first air inlet and a second air inlet, and the first air inlet and the second air inlet are both connected with the first electromagnetic valve component; the second valve comprises a third air inlet and a fourth air inlet, and the third air inlet and the fourth air inlet are both connected with the second electromagnetic valve assembly; the air inlet end of the vent valve is connected with the third air inlet.

Further, the drain device comprises a plurality of silencers, and the silencers are arranged on an air supply line for supplying air to the first valve, the second valve and the vent valve.

According to another aspect of the present invention, there is provided a liquid discharge method including: s1, setting a liquid level sensor to detect the liquid level position; s2, when the liquid level sensor detects a full liquid signal, the liquid level sensor transmits the full liquid signal to the control device; and S3, when the control device receives the full liquid signal transmitted by the liquid level sensor, the control device closes the first valve and opens the second valve and the vent valve.

Further, the liquid discharge method further comprises the following steps: s4, after the first valve is closed, the second valve and the vent valve are opened and preset time is passed, a liquid full signal of the liquid level sensor is obtained; and S51, when the full liquid signal is closed, closing the second valve and the vent valve, and opening the first valve.

Further, the liquid discharge method further comprises the following steps: and S52, when the full liquid signal is connected, sending out an alarm signal.

Further, step S51 includes: controlling a second electromagnetic valve component to connect the air source and the fourth air inlet; and controlling the first electromagnetic valve assembly to connect the air source and the first air inlet.

Further, step S3 includes: s31, controlling the first electromagnetic valve component to connect the air source and the second air inlet; and controlling the second electromagnetic valve assembly to connect the air source with the third air inlet and connect the air source with the vent valve.

By applying the liquid drainage device, when the liquid level sensor detects that the liquid is full, the control device closes the first valve, then opens the vent valve and the second valve to drain the liquid in the liquid storage tank, then closes the second valve and the vent valve, opens the first valve, and continues to collect the electrolyte, the whole liquid drainage process is automatically completed without manual intervention, and because the first valve is in a closed state in the liquid drainage process, the vacuum degree in the filter main body is ensured on the premise of not using a vacuum pumping device, the filter main body can still continuously filter and collect the electrolyte, and the interference of the pressure intensity of a vacuum pipeline extending to the filter main body and the filter main body caused by the fact that the pressure intensity in the cavity of the liquid storage tank is kept flat with the atmospheric pressure in the liquid storage tank in the liquid drainage process is avoided.

Drawings

The invention is further described below with reference to the accompanying drawings and examples;

FIG. 1 is a schematic view of a liquid discharge apparatus according to embodiment 1 of the present invention;

FIG. 2 is a schematic pneumatic diagram of a drain apparatus according to embodiment 1 of the present invention;

FIG. 3 is a flow chart of a liquid discharge process in example 2 of the present invention;

the figures contain the following reference numerals:

reference numerals	Name (R)
		1	Filter
2	First valve
		21	First air inlet
22	Second air inlet
		3	Vent valve
4	Liquid storage tank
		41	Liquid level sensor
5	Second valve
		51	Third air inlet
52	Fourth air inlet
		61	First silencer
62	Second silencer
		63	Third silencer
64	Fourth silencer
		71	First solenoid valve assembly
72	Second electromagnetic valveAssembly
		8	Gas source

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.