CN2372787Y - Cover for lead-acid battery - Google Patents

Abstract

The utility model relates to a cover for lead-acid batteries. Partition wall 4 and 5 and seal walls 15, 16, 17 and 18 are respectively fixed around the peripheries of an overflow steam port 3 and an injection port 11 and below an upper cover 2 and above a lower cover 1. A reflowing groove 6 is arranged near the overflow stream port in the partition wall 5 and sloping to the overflow stream port direction. The upper cover and the lower cover are butt-jointed, heat-melted and tightly sealed at the partition walls 4 and 5 and the seal walls 15, 16, 17 and 18 into one body. The utility model has the advantages that the acid liquor overflows from the overflow steam port can not flow out of the cover because of the partition wall and can go back to the battery gradually; the injection port has no acid mist leaking out, so the life and the safety of the lead-acid accumulator can be improved by using the cover.

Description

The lid of lead acid accumulator

The utility model belongs to the critical piece of lead acid accumulator.

Existing starting lead acid battery overflows so its liquid injection port has acid mist at work because need often add sour moisturizing; Moreover also have acid mist at its steam-overflowing hole and overflow; Can influence the useful life and the safety of lead acid accumulator like this.

The purpose of this utility model is the lid of a kind of lead acid accumulator of development, this lid can effectively seal liquid injection port with the back, the acid of overflowing for steam-overflowing hole can only be trapped in the divider wall between lower cover and the loam cake, and can not spill into outside the lid, once battery status recovers normal, these acid solutions of overflowing can be returned in the battery again automatically.

The utility model is made up of the loam cake and the lower cover of battery.Around steam-overflowing hole, be fixed with divider wall below loam cake and above the lower cover, near lower cover divider wall inner steam-overflowing mouth, have the backflash that tilts to the steam-overflowing hole direction.On lower cover and loam cake below liquid injection port around be fixed with envelope wall, respectively be fixed with a circle envelope wall around below loam cake and above the lower cover.Loam cake docks at divider wall and envelope wall place with lower cover, and heat is melted and is solidified as a whole.In the liquid injection port of loam cake, be furnished with O-ring seal, twist solid in the liquid injection port of loam cake with externally threaded fluid injection bolt.

Loam cake of the present utility model and lower cover heat are melted admittedly together, with the liquid injection port outside seal, acid mist are overflowed.Even in use having overcharges or vibrate strongly acid solution is overflowed from steam-overflowing hole, because the sealing process of divider wall, acid solution can not flow to outside the lid yet, but also can flow back into gradually in the battery along backflash, and battery is prolonged useful life, and safety and sanitation.Venthole can outwards be given vent to anger, but owing to the effect of filter acid film acid mist is overflowed.This battery cover can make lead acid accumulator improve useful life in a word, and fail safe also improves.

Fig. 1 is an overall structure schematic diagram of the present utility model, and Fig. 2 is the upward view of loam cake 2, and Fig. 3 is the vertical view of lower cover 1, and Fig. 4 is the A-A cutaway view of Fig. 3, and Fig. 5 is the B-B cutaway view of Fig. 1, and Fig. 6 is the C-C cutaway view of Fig. 2.

Embodiment: present embodiment is made up of loam cake 2, lower cover 1.Below loam cake 2, around steam-overflowing hole 3, be fixed with divider wall 4, on lower cover 1, around steam-overflowing hole 3, be fixed with divider wall 5, near the divider wall 5 inner steam-overflowing mouths 3 of lower cover 1, have the backflash 6 that tilts to steam-overflowing hole 3 directions.Be fixed with envelope wall 15 around the liquid injection port 11 on lower cover 1, be fixed with envelope wall 16 around the liquid injection port 11 below loam cake 2.On lower cover 1 and loam cake 2 below around respectively be fixed with one the circle envelope wall 17,18.Loam cake 2 and lower cover 1 divider wall 4 with 5 and envelope wall 15,17 dock with 16,18 places, and heat is melted and is sealed into one admittedly.Cementation has the filter acid film 8 of polytetrafluoroethylene in the venthole 7 of loam cake 2.In the liquid injection port 11 of loam cake 2, be furnished with O-ring seal 10, twist solid in the liquid injection port 11 of loam cake 2 with externally threaded fluid injection bolt 9.

Claims (2)

1, the lid of lead acid accumulator, it is made up of loam cake (2) and lower cover (1), it is characterized in that below loam cake (2), around steam-overflowing hole (3), being fixed with divider wall (4), on lower cover (1), around steam-overflowing hole (3), be fixed with divider wall (5), near divider wall (5) the inner steam-overflowing mouth (3) of lower cover (1), have the backflash (6) that tilts to steam-overflowing hole (3) direction, be fixed with envelope wall (15) around the liquid injection port (11) on lower cover (1), be fixed with envelope wall (16) around the liquid injection port (11) below loam cake (2), on lower cover (1) and loam cake (2) below around respectively be fixed with one the circle envelope wall (17), (18), loam cake (2) and lower cover (1) are at divider wall (4) and (5) and envelope wall (15), (17) with (16), (18) locate butt joint, and heat is melted and is sealed into one admittedly, in the liquid injection port (11) of loam cake (2), be furnished with O-ring seal (10), twist solid in the liquid injection port (11) of loam cake (2) with externally threaded fluid injection bolt (9).

2, the lid of lead acid accumulator according to claim 1 is characterized in that cementation has filter acid film (8) in the venthole (7) of loam cake (2).

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