CN112242569B - Cadmium-nickel accumulator - Google Patents

Abstract

The invention discloses a nickel-cadmium storage battery. The storage battery casing includes two spaced storage battery cavities, and two inserting tubes of the air plug are respectively inserted into the two storage battery cavities and communicate with the respective corresponding storage storage cavities; the storage battery cover is provided with A liquid inlet and a liquid outlet respectively communicated with the two cannulae. In the present invention, an air plug is added to the nickel-cadmium storage battery, and the air plug can connect the cavities of the two storage batteries to form a flow channel structure between different storage batteries; Under the action of the formed flow channel structure, the liquid level heights of the two accumulators can be kept consistent, avoiding the difference in the liquid level heights in different accumulators after adding liquid; The cavity of the battery is connected to realize the replenishment of multiple batteries, which can effectively realize the centralized filling of the battery pack, and can effectively improve the efficiency of filling.

Description

Nickel Cadmium Battery

technical field

The invention relates to the technical field of accumulators, in particular to a nickel-cadmium accumulator.

Background technique

Nickel-cadmium batteries are mostly used in rail transit vehicles, and usually require multiple batteries to form a battery pack; in order to match the vehicle design, the battery pack is generally installed under the vehicle as a backup auxiliary power supply or traction starting power supply, and keeps running within a specified time. The group supplies power to other electrical devices in the car.

Nickel-cadmium batteries need regular maintenance during the entire service life, and distilled water needs to be fed into each battery to replenish water during maintenance. At present, the water replenishment work of nickel-cadmium batteries is manually operated, which cannot accurately ensure the consistency of the liquid filling height in the battery, and the liquid level in each battery is different, which cannot meet the maintenance requirements.

Contents of the invention

The technical problem to be solved by the present invention is to provide a nickel-cadmium storage battery that can automatically keep the filling height of the storage battery consistent.

In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is: a nickel-cadmium storage battery, including at least one storage battery casing, a detachable battery cover is arranged on the storage battery casing, and an air plug is fixed on the air plug. The battery housing includes two spaced battery cavities, and the two insertion tubes of the air plug are respectively inserted into the two battery cavities and communicate with the respective corresponding battery cavities; the battery cover is provided with two A liquid inlet and a liquid outlet connected by the cannula.

Further, the air plug is provided with an end cap and a cover, and the two intubation tubes are arranged in parallel, and the end cap is fixedly connected with the ends of the two intubation tubes; the cover is arranged under the end cover and connected to the two The intubation tube is fixedly connected, and the cover is a groove structure with the opening facing downward.

Further, the battery cover is fixed with a clamping seat for installing the air plug, and the end cover and the clamping seat are in interference fit so that a sealed cavity is formed between the end cover and the clamping seat.

Further, an outwardly protruding ring boss is fixed inside the card holder, the cover of the air plug is buckled on the ring boss, and the two inserting tubes of the air plug pass through the middle of the ring boss; There is a gap for liquid to pass between the cover and the boss of the ring.

Further, the end of the intubation tube connected to the end cap is provided with an air outlet, and the air outlet holes of the two intubation tubes are coaxially arranged; the end of the intubation tube not connected with the end cover is provided with breath.

Further, a connecting head arranged horizontally is respectively fixed on both sides of the card seat, and the liquid inlet and the liquid outlet are respectively arranged in the two connecting heads, and both the liquid inlet and the liquid outlet are connected with the space of the card seat. The cavity is connected; the level of the liquid inlet and the liquid outlet is between the end cover and the cover.

Further, a plurality of stepped sealing bosses are arranged on the outer surface of the connecting head.

Further, there are two battery cases, each battery case is provided with an air plug, and the liquid outlet of the air plug communicates with the liquid inlet of the adjacent air plug through a pipe.

The beneficial effects of the present invention are: the present invention adds an air plug to the nickel-cadmium storage battery, and the air plug can connect the cavities of the two storage batteries to form a flow channel structure between different storage batteries; When adding liquid, the liquid level in the battery chamber rises and the gas is discharged at the same time. Under the action of the flow channel structure formed by the air plug, the liquid level of the two batteries can be kept consistent, and the liquid level in different batteries can be avoided after liquid filling. There is a difference in surface height; and the present invention can connect the battery cavities of multiple batteries by increasing the number of air plugs, so as to realize the replenishment, liquid addition and exhaust of multiple batteries, and can effectively realize the concentrated liquid addition of battery packs, and can Effectively improve the efficiency of liquid addition.

Description of drawings

Fig. 1 is the front view of the present invention;

Fig. 2 is the top view of the present invention;

Figure 3 is a top view of the battery case;

Figure 4 is an axonometric view of the battery cover;

Figure 5 is an axonometric view of the air plug;

Figure 6 is a cross-sectional view of the cooperation between the air plug and the card seat;

The marks in the figure are: 100-battery shell, 110-battery cavity, 200-battery cover, 210-liquid inlet, 220-liquid outlet, 230-cassette, 231-ring boss, 240-connector , 241-sealing boss, 300-air plug, 310-intubation tube, 311-air outlet, 312-air inlet, 320-end cover, 330-sealing cover, 400-pipeline.

detailed description

In order to facilitate understanding of the present invention, the present invention will be further described below in conjunction with the accompanying drawings.

As shown in FIG. 1 , an air plug 300 is added to the nickel-cadmium battery disclosed in the present invention on the basis of the battery case 100 and the battery cover 200 . As shown in FIG. 3 , the battery casing 100 includes two battery cavities 110 , and the two battery cavities 110 are arranged at intervals. The battery cover 200 is connected to the top of the battery case 100 by gluing or welding. The air plug 300 in the present invention is provided with two spaced intubation tubes 310, and the battery cover 200 is provided with a through hole for the two intubation tubes 310 to pass through, and the two intubation tubes 310 of the air plug 300 pass through the battery The cover 200 is respectively inserted into the two battery cavities 110, and the two battery cavities 110 in one battery case 100 are communicated through an air plug 300, and the two insertion tubes 310 of the air plug 300 are respectively connected to the battery covers. The liquid inlet 210 on the 200 communicates with the liquid outlet 220 . The number of air plugs 300 is set according to the number of batteries in the nickel-cadmium battery. Each battery cavity 110 corresponds to a battery, and two spaced battery cavities 110 are connected by an air plug 300. As shown in FIG. 2, adjacent The air plug 300 communicates through the pipeline 400, and the liquid outlet 220 of the air plug 300 communicates with the liquid inlet 210 of the next air plug 300 through the pipeline 400; the liquid inlet 210 of the first air plug 400 is communicated with the water tanker, and the The liquid outlet 220 of the last air plug 300 communicates with the liquid discharge barrel, so that liquid can be added and water replenished. In the present invention, the battery case 100, the battery cover 200 and the air plug 300 are all made of ABS material or engineering plastic material.

As shown in Figures 5 and 6, the gas plug 300 used in the present invention includes an end cap 320 and a cover 330 in addition to the two intubation tubes 310, the end cap 320 is fixed on the ends of the two intubation tubes 310, Keep the two intubates 310 parallel to each other; the cover 330 is a groove structure opening downwards, and the cover 330 is also connected and fixed with the two intubates 310, but the cover 330 is located below the end cap 320, and the end cover 320 is connected to the end cap 320. There is a gap between the covers 330 ; the end cap 320 and the cover 330 on the air plug 300 cooperate with the clamping seat 230 on the battery cover 220 to realize the fixing and sealing of the air plug 300 . The end of one end of the intubation tube 310 connected to the end cover 320 is provided with an air outlet 311, the air outlets 311 of the two intubation tubes 310 are coaxially arranged, and the air outlet 311 is connected to the end cover 320; An air inlet 312 is formed at the end of the cannula 310 not connected with the end cap 320 .

As shown in FIGS. 4 and 5 , the card holder 230 is arranged on the battery cover 200 , and the card holder 230 is a ring structure protruding from the battery cover 200 . The intervals between the two battery cavities 110 correspond to each other, so that the horizontal centerline of the card holder 230 is opposite to the above-mentioned interval line; an outwardly protruding ring boss 231 is fixed in the holder 230, and the height of the ring boss 231 is The inner profile of the card base 230 matches the outer profile of the end cover 320 , and the outer diameter of the ring boss 230 is smaller than the inner diameter of the cover 330 . When installing the air plug 300, the two air plugs 300 of the air plug 300 are inserted into the corresponding battery cavity 110 through the two through holes in the ring boss 231, and the cover 330 is buckled on the ring On the boss 231, the cover 330 and the ring boss 231 are clearance fit, so that an "S"-shaped flow channel structure is formed between the cover 330 and the ring boss 231; The interference fit forms a sealed cavity between the end cover 320 and the card seat 230 .

In order to ensure the convenience and tightness of adding liquid and replenishing water, as shown in Figure 4 and Figure 6, two connectors 240 are fixed on the card base 230, the connectors 240 are hollow cylindrical structures, and the two connectors 240 are respectively Horizontally fixed on both sides of the card holder 230, the inner cavities of the two connectors 240 are the liquid inlet 210 and the liquid outlet 220, both the liquid inlet 210 and the liquid outlet 220 communicate with the cavity of the card holder 230, And it should be ensured that the level of the liquid inlet 210 and the liquid outlet 220 is between the end cover 320 and the cover 330 . In addition, the outer surface of the connector 240 is provided with a multi-ring sealing boss 241, and the sealing boss 241 is a stepped structure at intervals; The tightness of the connection between the pipe 400 and the connection head 240 can be ensured.

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

In the first stage, liquid is added to the nickel-cadmium storage battery through the liquid inlet 210, and the liquid enters the inner cavity of the card seat 230 through the liquid inlet 210, and then passes through the "S" shape between the cover 330 and the ring boss 231. The flow channel structure flows into the battery cavity 110, the gas in the battery cavity 110 enters the inside of the cannula 310 through the air inlet 312 on the cannula 310, and the gas rises to the top of the cannula 310 and is discharged into the card holder from the air outlet 311 230, and then discharge from the liquid outlet 220 together with the excess liquid in the inner cavity of the card seat 230. 220 discharges a mixture of liquid and gas;

In the second stage, when the liquid level in the battery cavity 110 exceeds the bottom end of the insertion tube 310, the remaining gas is collected in the upper cavity of the battery cavity 110, and liquid continues to enter the battery cavity 110, but the battery cavity The gas in the body 110 enters the air inlet 312 at the bottom of the cannula 310 due to the upper liquid level, and the gas is no longer discharged. As the liquid continues to enter the battery cavity 110, the air pressure in the battery cavity 110 continues to increase until the battery When the gas pressure in the cavity 110 is equal to the pressure of the inlet pressure, the gas in the battery cavity 110 forms an air cavity in the "S"-shaped flow channel structure between the cover 330 and the ring boss 231, and the flow channel is blocked Instead of being able to enter the liquid, all the liquid entering from the liquid inlet 210 is discharged from the liquid outlet 220 , and the liquid and water replenishment to the battery cavity 110 are completed.

Claims (5)

1. Nickel-cadmium accumulator, comprising at least one accumulator shell (100), is provided with detachable accumulator cover (200) on the accumulator shell (100), is characterized in that: also comprises air plug (300), air plug (300) ) are fixed with two intubation tubes (310); the battery housing (100) includes two spaced battery cavities (110), and the two intubation tubes (310) of the air plug (300) are inserted into two battery cells respectively. The cavity (110) is in communication with the respective corresponding battery cavity (110); the battery cover (200) is provided with a liquid inlet (210) and a liquid outlet (220) respectively connected to the two insertion tubes (310). ); the air plug (300) is provided with an end cap (320) and a cover (330), and two intubation tubes (310) are arranged in parallel, and the end cap (320) and the two intubation tubes (310) The ends are fixedly connected; the cover (330) is arranged under the end cover (320) and fixedly connected with the two insertion tubes (310), and the cover (330) is a groove structure with the opening facing downward; the battery cover (200 ) is fixed with a card seat (230) for installing the air plug (300), and the interference fit between the end cover (320) and the card seat (230) makes a sealed space between the end cover (320) and the card seat (230) Cavity; said deck (230) is fixed with an outwardly protruding ring boss (231), the cover (330) of the air plug (300) is buckled on the ring boss (231), and the air plug (300) ) through the middle of the ring boss (231); there is a gap for liquid to pass between the cover (330) and the ring boss (231). 2. The nickel-cadmium storage battery as claimed in claim 1, characterized in that: the end of one end of the intubation tube (310) connected to the end cover (320) is provided with an air outlet (311), and the two intubation tubes (310) ) of the outlet hole (311) is coaxially arranged; the end of the end of the intubation tube (310) that is not connected with the end cover (320) is provided with an air inlet (312). 3. The nickel-cadmium storage battery according to claim 1, characterized in that: a horizontally arranged connector (240), a liquid inlet (210) and a liquid outlet are respectively fixed on both sides of the holder (230). (220) are respectively arranged in the two connectors (240), and the liquid inlet (210) and the liquid outlet (220) are all communicated with the cavity of the cartridge (230); the liquid inlet (210) and the liquid outlet The level of (220) is between the end cap (320) and the cover (330). 4. The nickel-cadmium storage battery according to claim 3, characterized in that: a plurality of stepped sealing bosses (241) are arranged on the outer surface of the connector (240). 5. The nickel-cadmium storage battery according to any one of claims 1 to 4, characterized in that: the number of the storage battery casings (100) is at least two, and each storage battery casing (100) is respectively provided with a gas The plug (300), the liquid outlet (220) of the gas plug (300) communicates with the liquid inlet (210) of the adjacent gas plug (300) through the pipe (400).

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