Manual liquid injection device for sodium battery

Abstract

The utility model discloses a manual liquid injection device for a sodium battery, and relates to the field of sodium batteries. The manual liquid injection device for the sodium battery comprises a liquid storage bottle, and further comprises a sealing cover, a liquid injection device and a liquid injection device, the sealing cover is a stainless steel cover, an air inlet hole and a liquid injection hole are formed in the sealing cover, and one-way valves are arranged in the air inlet hole and the liquid injection hole; the air inlet pipe and the liquid injection pipe are respectively communicated with the air inlet hole and the liquid injection hole of the sealing cover in a sealing manner; the liquid storage bottle is hung on the support with the bottle opening facing downwards, and an opening used in cooperation with the liquid storage bottle is formed in the support; the liquid injection head is arranged below the liquid outlet of the liquid injection pipe; the flow meter is arranged, so that the flow of the electrolyte can be accurately measured, then the electrolyte flows into the battery, the operation is simple, the consistency of battery electrolyte injection can be ensured, and the electrolyte injection efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sodium batteries, and in particular relates to a manual liquid filling device for sodium batteries. Background Art

[0002] With the development of science and technology, the application field of sodium batteries is becoming wider and wider. In the laboratory, the research and development and testing of sodium batteries require the precise injection of electrolyte. Therefore, the injection of sodium batteries in the laboratory generally requires the cooperation of an injector and an electronic balance to confirm one by one before it can be injected into the battery. As a result, multiple manual readings are required to confirm the amount of electrolyte. The operation is cumbersome and inefficient. In addition, the electrolyte is easy to absorb water, which will affect the electrical performance of the battery and thus affect the judgment of the battery's overall performance.

[0003] When filling the electrolyte in the laboratory, the electrolyte is poured entirely into a container without a sealed cover, which may cause secondary contamination of the electrolyte. In view of this, the present invention is proposed. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a manual liquid filling device for sodium batteries that can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a manual liquid filling device for sodium batteries, comprising a liquid storage bottle, and also comprising: a sealing cover, which is sealed and connected to the bottle mouth of the liquid storage bottle by a threaded seal; the sealing cover is a stainless steel cover, the sealing cover is provided with an air inlet hole and a liquid filling hole, and the air inlet hole and the liquid filling hole are both provided with a one-way valve; the air inlet pipe and the liquid filling pipe are respectively sealed and connected with the air inlet hole and the liquid filling hole of the sealing cover; a bracket, the bottle mouth of the liquid storage bottle is suspended downwardly on the bracket, and the bracket is provided with an opening for use with the liquid storage bottle; a liquid filling head is arranged below the liquid outlet of the liquid filling pipe; a flow meter is arranged between the liquid outlet of the liquid filling pipe and the liquid filling head, and the liquid inlet and outlet are respectively sealed and connected with the liquid outlet of the liquid filling pipe and the liquid inlet of the liquid filling head, and the flow meter is used to accurately control the electrolyte flowing into the battery.

[0006] In order to improve the sealing performance of the liquid storage bottle, a corrosion-resistant sealing ring is placed inside the sealing cover and is used in conjunction with the bottle mouth of the liquid storage bottle.

[0007] In order to facilitate the stable fixation of the liquid storage bottle on the bracket, further, the outer surface of the liquid storage bottle is provided with an external thread near the bottle mouth, and the opening of the bracket is provided with an internal thread used in conjunction with the external thread on the liquid storage bottle.

[0008] In order to facilitate the control of the amount added into the liquid storage bottle, further, the liquid storage bottle is a transparent glass bottle, and scale lines are set on the surface.

[0009] In order to facilitate the control of the precise amount of liquid injection at the beginning and end, the flow meter is further a metering flow meter with a switch function.

[0010] In order to facilitate simultaneous liquid injection into the batteries, the liquid injection pipe is further provided with a plurality of liquid outlets, and each liquid outlet of the liquid injection pipe is equipped with a flow meter and a liquid injection head.

[0011] After adopting the above technical solution, the present invention has the following beneficial effects compared with the existing technology: the present invention can accurately control the electrolyte flow rate through the set flow meter, shortening the manual injection time and the battery cell shelf time. It has a simple structure and is easy to operate. It can ensure the stability of the battery's electrical performance and improve the injection efficiency. It is suitable for the research and development and testing of sodium batteries in the laboratory.

[0012] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the attached figure:

[0014] Figure 1 This is a schematic diagram of the first embodiment of the present utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the first embodiment of the present invention;

[0016] Figure 3 This is a schematic cross-sectional view of the second embodiment of the present invention.

[0017] In the figure: 1. Liquid storage bottle; 101. Scale line; 2. Sealing cap; 201. Corrosion-resistant sealing ring; 3. Bracket; 4. Air inlet pipe; 5. Liquid injection pipe; 6. Flow meter; 7. Liquid injection head; 8. Battery. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0019] Example 1:

[0020] Reference Figure 1-Figure 2, a manual liquid filling device for sodium batteries, comprising a liquid storage bottle 1, and also comprising: a sealing cover 2, which is sealed and connected to the bottle mouth of the liquid storage bottle 1 through a threaded seal; the sealing cover 2 is a stainless steel cover, and is provided with an air inlet hole and a liquid filling hole, and a one-way valve is provided in the air inlet hole and the liquid filling hole; an air inlet pipe 4 and a liquid filling pipe 5 are sealed and connected with the air inlet hole and the liquid filling hole of the sealing cover 2 respectively; a bracket 3, on which the bottle mouth of the liquid storage bottle 1 is suspended downwardly, and an opening is provided on the bracket 3 for use with the liquid storage bottle 1; a liquid filling head 7, which is arranged below the liquid outlet of the liquid filling pipe 5; a flow meter 6, which is arranged between the liquid outlet of the liquid filling pipe 5 and the liquid filling head 7, and the liquid inlet and outlet are sealed and connected with the liquid outlet of the liquid filling pipe 5 and the liquid inlet of the liquid filling head 7 respectively, and the flow meter 6 is used to accurately control the electrolyte flowing into the battery 8.

[0021] A corrosion-resistant sealing ring 201 is placed inside the sealing cover 2 and is used in conjunction with the bottle mouth of the liquid storage bottle 1.

[0022] An external thread is provided on the outer surface of the liquid storage bottle 1 near the bottle mouth, and an internal thread is provided in the opening of the bracket 3 for use with the external thread on the liquid storage bottle 1 .

[0023] The liquid storage bottle 1 is a transparent glass bottle, and scale lines 101 are provided on the surface.

[0024] In the laboratory, during the development and testing of sodium batteries, when it is necessary to accurately inject electrolyte into the battery 8, the experimenter first injects electrolyte into the liquid storage bottle 1 and determines the required total electrolyte volume through the scale line 101. Then the sealing cap 2 can be screwed onto the bottle mouth of the liquid storage bottle 1 through threads, and the liquid storage bottle 1 is sealed through the corrosion-resistant sealing ring 201. Then the liquid storage bottle 1 can be turned upside down on the bracket 3 and fixed to the bracket 3 through threads to ensure the stability of the liquid storage bottle 1. Then the air inlet pipe 4 and the liquid injection pipe 5 are sealed and connected to the air inlet hole and the liquid injection hole of the sealing cap 2 respectively. Finally, the liquid injection head 7 is sealed and connected to the liquid outlet of the flowmeter 6, and the liquid outlet of the liquid injection pipe 5 is sealed and connected to the liquid inlet of the flowmeter 6, thereby completing the assembly of the liquid injection device.

[0025] Then the battery 8 can be manually aligned with the injection head 7 or mechanically moved so that the injection head 7 is inserted into the injection port of the battery 8. Then the air inlet pipe 4 can be connected to the air storage box storing anhydrous nitrogen outside. When the injection starts, the anhydrous nitrogen can be transported into the liquid storage bottle 1 through the air inlet pipe 4 to give the liquid storage bottle 1 a certain positive pressure, thereby promoting the smooth flow of electrolyte into the battery 8. When the electrolyte passes through the flow meter 6, the flow meter 6 will measure the electrolyte entering the battery 8 in real time, so as to accurately control the amount of electrolyte flowing into the battery 8. When the required injection volume is reached, the supply of anhydrous nitrogen to the liquid storage bottle 1 is stopped, the injection head 7 is pulled out, and the injection operation of the battery 8 is completed.

[0026] Example 2:

[0027] Reference Figure 3 , a manual liquid injection device for sodium batteries, which is basically the same as Example 1, furthermore: the flow meter 6 is a measuring flow meter with a switching function.

[0028] The liquid injection pipe 5 is provided with a plurality of liquid outlets, and each liquid outlet of the liquid injection pipe 5 is equipped with a flow meter 6 and a liquid injection head 7 .

[0029] When multiple batteries 8 need to be filled with liquid, a filling tube 5 with multiple liquid outlets can be used. Since the rate of filling each battery 8 cannot be the same, a metering flow meter 6 with a switching function is used. When one of the batteries 8 is filled with electrolyte, the flow meter 6 can close the liquid outlet on the filling tube 5 used in conjunction with it, so that liquid will no longer be injected into the battery 8, and the other liquid outlets of the filling tube 5 will continue to transport electrolyte until all batteries 8 are filled with liquid. Compared with the filling method of Example 1, when multiple batteries 8 need to be filled with electrolyte, the work efficiency can be effectively improved.

[0030] The above description is merely a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention.

Claims

1. A manual liquid filling device for sodium batteries, characterized in that: The invention comprises a liquid storage bottle (1), and further comprises: A sealing cap (2) is connected to the bottle mouth of the liquid storage bottle (1) through a threaded sealing connection; The sealing cover (2) is a stainless steel cover, and an air inlet hole and a liquid injection hole are provided on the sealing cover (2), and a one-way valve is provided in each of the air inlet hole and the liquid injection hole; The air inlet pipe (4) and the liquid injection pipe (5) are respectively connected to the air inlet hole and the liquid injection hole of the sealing cover (2) in a sealed manner; A bracket (3), the liquid storage bottle (1) is suspended on the bracket (3) with the bottle mouth facing downward, and the bracket (3) is provided with an opening for use with the liquid storage bottle (1); A liquid injection head (7) is arranged below the liquid outlet of the liquid injection pipe (5); A flow meter (6) is provided between the liquid outlet of the injection pipe (5) and the injection head (7), and the liquid inlet and outlet are sealedly connected to the liquid outlet of the injection pipe (5) and the liquid inlet of the injection head (7), respectively. The flow meter (6) is used to accurately control the electrolyte flowing into the battery (8).

2. A manual liquid filling device for sodium batteries according to claim 1, characterized in that: A corrosion-resistant sealing ring (201) is placed inside the sealing cover (2) and is used in conjunction with the bottle mouth of the liquid storage bottle (1).

3. A manual liquid filling device for sodium batteries according to claim 1, characterized in that: An external thread is provided on the outer surface of the liquid storage bottle (1) near the bottle mouth, and an internal thread is provided in the opening of the bracket (3) for use in conjunction with the external thread on the liquid storage bottle (1).

4. A manual liquid filling device for sodium batteries according to claim 1, characterized in that: The liquid storage bottle (1) is a transparent glass bottle, and scale lines (101) are provided on the surface.

5. The manual liquid filling device for sodium batteries according to claim 1, characterized in that: The flow meter (6) is a metering flow meter with a switching function.

6. A manual liquid filling device for sodium batteries according to claim 5, characterized in that: The liquid injection pipe (5) is provided with a plurality of liquid outlets, and each liquid outlet of the liquid injection pipe (5) is equipped with a flow meter (6) and a liquid injection head (7).

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