CN112242569A

CN112242569A - Cadmium-nickel accumulator

Info

Publication number: CN112242569A
Application number: CN202011123914.9A
Authority: CN
Inventors: 罗鳌; 李凌波; 段松华; 刘明章
Original assignee: Sichuan Changhong Battery Co ltd
Current assignee: SICHUAN CHANGHONG POWER SUPPLY CO Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-01-19
Anticipated expiration: 2040-10-20
Also published as: CN112242569B

Abstract

The invention discloses a cadmium-nickel storage battery.A storage battery shell comprises two spaced storage battery cavities, and two insertion tubes of an air plug are respectively inserted into the two storage battery cavities and are communicated with the corresponding storage battery cavities; the storage battery cover is provided with a liquid inlet and a liquid outlet which are respectively communicated with the two insertion tubes. The air plug is additionally arranged on the cadmium-nickel storage battery, and can be used for communicating two storage battery cavities to form a flow channel structure between different storage batteries; liquid can be simultaneously added to the two storage batteries through the air plug, the liquid level heights of the two storage batteries can be kept consistent under the action of a flow channel structure formed by the air plug, and the difference of the liquid level heights in different storage batteries after liquid is added is avoided; in addition, the storage battery cavities of the plurality of storage batteries can be communicated by increasing the number of the air plugs, so that water and liquid can be supplemented to the plurality of storage batteries, the concentrated liquid adding of the storage battery can be effectively realized, and the liquid adding efficiency can be effectively improved.

Description

Cadmium-nickel accumulator

Technical Field

The invention relates to the technical field of storage batteries, in particular to a cadmium-nickel storage battery.

Background

The cadmium-nickel storage battery is mainly used for rail transit vehicles, and usually a plurality of storage batteries are required to form a storage battery pack; in order to be matched with a vehicle design, a storage battery pack is generally arranged below the vehicle and is used as a standby auxiliary power supply or a traction starting power supply to keep running within a specified time, and other electric appliances in the vehicle are supplied with power through the storage battery pack.

The cadmium-nickel storage battery needs to be maintained regularly during the whole service life, and distilled water needs to be input into each storage battery for adding liquid and replenishing water during maintenance. At present, the water replenishing work of the cadmium-nickel storage battery is manually operated, the consistency of the liquid adding height in the storage battery cannot be accurately ensured, the liquid level height in each storage battery is different, and the maintenance requirement cannot be met.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: provides a cadmium-nickel accumulator which can automatically keep the consistent liquid filling height in the accumulator.

In order to solve the technical problems, the invention adopts the technical scheme that: the cadmium-nickel storage battery comprises at least one storage battery shell, a detachable storage battery cover and an air plug, wherein two insertion tubes are fixed on the air plug; the storage battery shell comprises two storage battery cavities at intervals, and two insertion tubes of the air plug are respectively inserted into the two storage battery cavities and are communicated with the storage battery cavities respectively corresponding to the two insertion tubes; the storage battery cover is provided with a liquid inlet and a liquid outlet which are respectively communicated with the two insertion tubes.

Further, the method comprises the following steps: the air plug is provided with an end cover and a sealing cover, the two insertion tubes are arranged in parallel, and the end cover is fixedly connected with the ends of the two insertion tubes; the closing cap sets up in the end cover below and with two intubate fixed connection, the closing cap is the groove structure that the opening is down.

Further, the method comprises the following steps: a clamping seat for installing an air plug is fixed on the storage battery cover, and a sealed cavity is formed between the end cover and the clamping seat through interference fit of the end cover and the clamping seat.

Further, the method comprises the following steps: an outward-protruding circular boss is fixed in the clamping seat, a sealing cover of the air plug is buckled on the circular boss, and two insertion tubes of the air plug penetrate through the middle of the circular boss; a gap for liquid to pass through is reserved between the sealing cover and the circular ring boss.

Further, the method comprises the following steps: the end of one end of each insertion tube, which is connected with the end cover, is provided with an air outlet, and the air outlets of the two insertion tubes are coaxially arranged; and the end of the intubation tube, which is not connected with the end cover, is provided with an air inlet.

Further, the method comprises the following steps: two connectors which are transversely arranged are respectively fixed on two side surfaces of the clamping seat, a liquid inlet and a liquid outlet are respectively arranged in the two connectors, and the liquid inlet and the liquid outlet are both communicated with the cavity of the clamping seat; the level height of the liquid inlet and the liquid outlet is positioned between the end cover and the sealing cover.

Further, the method comprises the following steps: a plurality of step-shaped sealing bosses are arranged on the outer surface of the connector.

Further, the method comprises the following steps: the quantity of battery case is two, respectively sets up an air lock on every battery case, and the liquid outlet of air lock passes through the inlet intercommunication of pipeline with adjacent air lock.

The invention has the beneficial effects that: the air plug is additionally arranged on the cadmium-nickel storage battery, and can be used for communicating two storage battery cavities to form a flow channel structure between different storage batteries; the air plug can be used for simultaneously adding liquid into the two storage batteries, the gas is discharged while the liquid level in the cavity of the storage battery rises, the liquid level heights of the two storage batteries can be kept consistent under the action of a flow passage structure formed by the air plug, and the difference of the liquid level heights in different storage batteries after liquid is added is avoided; in addition, the storage battery cavities of the storage batteries can be communicated by increasing the number of the air plugs, so that water supplementing, liquid adding and air exhausting of the storage batteries are realized, centralized liquid adding of the storage battery pack can be effectively realized, and the liquid adding efficiency can be effectively improved.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a top view of the battery housing;

FIG. 4 is an isometric view of a battery cover;

FIG. 5 is an isometric view of the air lock;

FIG. 6 is a cross-sectional view of the engagement of the air lock with the cartridge;

labeled as: 100-storage battery shell, 110-storage battery cavity, 200-storage battery cover, 210-liquid inlet, 220-liquid outlet, 230-clamping seat, 231-circular boss, 240-connector, 241-sealing boss, 300-air plug, 310-insertion pipe, 311-air outlet, 312-air inlet, 320-end cover, 330-sealing cover and 400-pipeline.

Detailed Description

In order to facilitate understanding of the invention, the invention is further described below with reference to the accompanying drawings.

As shown in FIG. 1, the disclosed cadmium-nickel battery adds a gas plug 300 to the battery case 100 and the battery cover 200. As shown in fig. 3, the battery case 100 includes two battery cavities 110 therein, and the two battery cavities 110 are spaced apart from each other. The battery cover 200 is attached to the top of the battery case 100 by means of gluing or welding. The air plug 300 is provided with two spaced insertion tubes 310, the battery cover 200 is provided with a through hole through which the two insertion tubes 310 can pass, the two insertion tubes 310 of the air plug 300 are respectively inserted into the two battery cavities 110 after passing through the battery cover 200, the two battery cavities 110 in one battery shell 100 are communicated through one air plug 300, and the two insertion tubes 310 of the air plug 300 are respectively communicated with the liquid inlet 210 and the liquid outlet 220 arranged on the battery cover 200. The number of the air plugs 300 is set according to the number of the storage batteries in the cadmium-nickel storage battery, each storage battery cavity 110 corresponds to one storage battery, two spaced storage battery cavities 110 are communicated by one air plug 300, as shown in fig. 2, adjacent air plugs 300 are communicated through a pipeline 400, and a liquid outlet 220 of the air plug 300 is communicated with a liquid inlet 210 of the next air plug 300 through the pipeline 400; the liquid inlet 210 of the first air lock 400 is communicated with a water filling vehicle, and the liquid outlet 220 of the last air lock 300 is communicated with a liquid discharging barrel, so that liquid filling and water replenishing can be performed. In the present invention, the battery case 100, the battery cover 200 and the air lock 300 are made of ABS material or engineering plastic material.

As shown in fig. 5 and 6, the air lock 300 used in the present invention includes an end cap 320 and a cover 330 in addition to the two insertion tubes 310, wherein the end cap 320 is fixed at the ends of the two insertion tubes 310 to keep the two insertion tubes 310 parallel to each other; the sealing cover 330 is a groove structure with a downward opening, the sealing cover 330 is also fixedly connected with the two insertion tubes 310, but the sealing cover 330 is positioned below the end cover 320, and a gap is reserved between the end cover 320 and the sealing cover 330; the end cap 320 and the cover 330 on the air plug 300 are matched with the clamping seat 230 on the battery cover 220 to realize the fixation and sealing of the air plug 300. The end of the connecting end of the cannula 310 and the end cap 320 is provided with air outlet holes 311, the air outlet holes 311 of the two cannulas 310 are coaxially arranged, and the air outlet holes 311 are connected with the end cap 320; an air inlet 312 is formed at the end of the cannula 310 that is open at the rear of the cannula 310, such that the cannula 310 is not connected to the end cap 320.

As shown in fig. 4 and 5, the clamping seat 230 is disposed on the battery cover 200, the clamping seat 230 is a ring-shaped structure protruding from the battery cover 200, and the fixing position of the clamping seat 230 on the battery cover 200 corresponds to the space between the two battery cavities 110 in the battery case 100, so that the horizontal center line of the clamping seat 230 is opposite to the space line; a convex circular boss 231 is fixed in the clamping seat 230, the height of the circular boss 231 is less than that of the clamping seat 230, the inner contour of the clamping seat 230 is matched with the outer contour of the end cover 320, and the outer diameter of the circular boss 230 is less than the inner diameter of the cover 330. When the air plug 300 is installed, two air plugs 300 of the air plug 300 are inserted into the corresponding storage battery cavities 110 through two through holes in the circular ring boss 231, the sealing cover 330 is fastened on the circular ring boss 231, the sealing cover 330 is in clearance fit with the circular ring boss 231, and an S-shaped flow channel structure is formed between the sealing cover 330 and the circular ring boss 231; the end cap 320 is in interference fit with the cartridge 230, so that a sealed cavity is formed between the end cap 320 and the cartridge 230.

In order to ensure the convenience and the sealing performance of liquid charging and water replenishing, as shown in fig. 4 and fig. 6, two connectors 240 are fixed on the clamping seat 230, the connectors 240 are hollow cylindrical structures, the two connectors 240 are respectively and transversely fixed on two side surfaces of the clamping seat 230, inner cavities of the two connectors 240 are the liquid inlet 210 and the liquid outlet 220, the liquid inlet 210 and the liquid outlet 220 are both communicated with a cavity of the clamping seat 230, and the horizontal heights of the liquid inlet 210 and the liquid outlet 220 are ensured to be located between the end cover 320 and the sealing cover 330. In addition, a plurality of circles of sealing bosses 241 are arranged on the outer surface of the connector 240, and the sealing bosses 241 are in a spaced step-shaped structure; when the pipe 400 is connected with the connecting head 240, the sealing boss 241 on the surface of the connecting head 240 can ensure the connection tightness between the pipe 400 and the connecting head 240.

When the cadmium-nickel storage battery disclosed by the invention is used for adding liquid and replenishing water, the liquid adding process comprises the following two stages:

in the first stage, the cadmium-nickel storage battery is charged through the liquid inlet 210, liquid enters the inner cavity of the clamping seat 230 through the liquid inlet 210, then flows into the storage battery cavity 110 through the S-shaped flow channel structure between the sealing cover 330 and the circular boss 231, gas in the storage battery cavity 110 enters the insertion tube 310 through the gas inlet 312 on the insertion tube 310, the gas rises to the top of the insertion tube 310 and then is discharged into the inner cavity of the clamping seat 230 from the gas outlet 311, and then is discharged from the liquid outlet 220 along with redundant liquid in the inner cavity of the clamping seat 230, the liquid level in the storage battery cavity 110 does not exceed the bottom end of the insertion tube 310 at this stage, and the liquid outlet 220 discharges a mixture of the liquid and the gas;

in the second stage, when the liquid level in the battery cavity 110 exceeds the bottom end of the insertion tube 310, the residual gas is collected in the upper cavity of the battery cavity 110, the liquid is continuously fed into the battery cavity 110, but the gas in the battery cavity 110 enters the gas inlet 312 at the bottom end of the insertion tube 310 due to the liquid level, the gas is not discharged any more, as the liquid continuously enters the battery cavity 110, the gas pressure in the battery cavity 110 continuously increases until the gas pressure in the battery cavity 110 is equal to the liquid feeding pressure, the gas in the battery cavity 110 forms a gas cavity in the S-shaped flow channel structure between the sealing cover 330 and the circular ring boss 231, the flow channel is blocked and cannot be fed, the liquid entering from the liquid inlet 210 is completely discharged from the liquid outlet 220, and the liquid feeding and replenishing for the battery cavity 110 are completed.

Claims

1. Cadmium-nickel battery, including at least one battery case (100), be equipped with detachable battery cover (200) on battery case (100), its characterized in that: the device also comprises an air plug (300), wherein two insertion tubes (310) are fixed on the air plug (300); the storage battery shell (100) comprises two storage battery cavities (110) which are spaced, and two insertion tubes (310) of the air plug (300) are respectively inserted into the two storage battery cavities (110) and are communicated with the storage battery cavities (110) which respectively correspond to the two insertion tubes; the storage battery cover (200) is provided with a liquid inlet (210) and a liquid outlet (220) which are respectively communicated with the two insertion tubes (310).

2. The cadmium nickel cell as set forth in claim 1 wherein: the air plug (300) is provided with an end cover (320) and a sealing cover (330), the two insertion tubes (310) are arranged in parallel, and the end cover (320) is fixedly connected with the ends of the two insertion tubes (310); the sealing cover (330) is arranged below the end cover (320) and fixedly connected with the two insertion tubes (310), and the sealing cover (330) is of a groove structure with a downward opening.

3. The cadmium nickel cell as set forth in claim 2 wherein: a clamping seat (230) used for mounting the air plug (300) is fixed on the storage battery cover (200), and a sealed cavity is formed between the end cover (320) and the clamping seat (230) through interference fit of the end cover (320) and the clamping seat (230).

4. A cadmium nickel cell as set forth in claim 3 wherein: a convex circular boss (231) is fixed in the clamping seat (230), a sealing cover (330) of the air plug (300) is buckled on the circular boss (231), and two insertion tubes (310) of the air plug (300) penetrate through the middle of the circular boss (231); a gap for liquid to pass through is reserved between the sealing cover (330) and the circular ring boss (231).

5. The cadmium nickel cell as set forth in claim 2 wherein: the end of one end of each insertion tube (310) connected with the end cover (320) is provided with an air outlet (311), and the air outlets (311) of the two insertion tubes (310) are coaxially arranged; the end of the cannula (310) which is not connected with the end cover (320) is provided with an air inlet (312).

6. A cadmium nickel cell as set forth in claim 3 wherein: two connectors (240) which are transversely arranged are respectively fixed on two side surfaces of the clamping seat (230), the liquid inlet (210) and the liquid outlet (220) are respectively arranged in the two connectors (240), and the liquid inlet (210) and the liquid outlet (220) are both communicated with a cavity of the clamping seat (230); the liquid inlet (210) and liquid outlet (220) have levels between the end cap (320) and the cover (330).

7. The cadmium nickel cell as set forth in claim 6 wherein: the outer surface of the connecting head (240) is provided with a plurality of step-shaped sealing bosses (241).

8. The cadmium-nickel accumulator of any one of claims 1 to 7, wherein: the number of the storage battery shells (100) is at least two, each storage battery shell (100) is provided with one air plug (300), and a liquid outlet (220) of each air plug (300) is communicated with a liquid inlet (210) of the adjacent air plug (300) through a pipeline (400).