CN2087819U

CN2087819U - Dry cell capable of repeatedly charging and discharging

Info

Publication number: CN2087819U
Application number: CN91205825U
Authority: CN
Inventors: 袁亦江
Original assignee: ZHEJIANG TIANYI PHOTOELECTRONICS FACTORY
Current assignee: ZHEJIANG TIANYI PHOTOELECTRONICS FACTORY
Priority date: 1991-04-01
Filing date: 1991-04-01
Publication date: 1991-10-30

Abstract

The utility model discloses a dry cell capable of repeatedly charging and discharging, belonging to an improvement of lead acid cells, comprising a shell, positive and negative pole plates and an electrolysis tank. The positive and negative pole plates are horizontally arranged in overlapping. A colloid solid electrolyte is used as the electrolyte and composed of silica gel created by potassium silicate and sulfuric acid in reaction and potassium sulfate. The electrolysis tank id filled with a filling material which contains metal palladium. The structure of utility model is simple. After totally sealed, the dry cell can be a secondary cheap dry battery which can generally work with an ordinary dry battery. Charging times of the dry cell can be multi-hundred on a charger with a constant current. In addition, the once capacity of the dry cell is greater than the zinc-manganese dry cells and chromium-nickel rechargeable dry cells in markets.

Description

Dry cell capable of repeatedly charging and discharging

The utility model relates to and a kind of chemical energy directly is transformed into the device of electric energy, particularly a kind of improved lead acid accumulator.

The zinc-maganese dioxide dry cell that generally uses is a primary cell at present, can not make it obtain discharge capability once more with the method for charging after the discharge.Chromium-nickel charging dry cell is a secondary cell.Owing to chromium-nickel-based battery manufacturing process complexity, cost an arm and a leg, be difficult to generally accept for people.Someone sets about from the structure of improving lead acid accumulator, attempts therefrom finding a kind of secondary cell of cheapness to replace chromium-nickel-based battery.Notification number is that CN87208016U and notification number are that the patent documentation of CN2047452U discloses two kinds of solutions, these two kinds of schemes have the hermetically-sealed construction similar to general dry battery, solved the problem of the leakage of lead acid accumulator, but still employing liquid electrolyte, complex structure, the pressure release safety device need be set, make, use all inconvenient.

The purpose of this utility model provides a kind of simple in structure, can with the cheap dry cell of the general secondary of general dry battery.

Solution of the present utility model is such: a kind of dry cell that repeats to discharge and recharge comprises columnar housing, PbO ₂Positive plate, Pb negative plate and electrolysis tank are provided with the PbO of the overlapping setting of one group of alternate level in the electrolysis tank ₂Fill in positive plate and the Pb negative plate, electrolysis tank by the silica gel of potassium silicate and sulfuric acid reaction generation and the gluey solid electrolyte that potassium sulfate is formed, PbO ₂Positive plate positive terminal parallel connection, the negative terminal parallel connection of Pb negative plate, the filler of containing metal palladium is filled in the electrolysis tank top.

The utility model adopts columnar structured, can be general with existing general dry battery; Adopt the colloid solid electrolyte, the problem of the electrolyte losses of fluid electrolyte neither can take place, reduced the hydrogen that battery produces, oxygen amount effectively again when discharging and recharging.The oxygen of trace and the effusion problem of hydrogen can absorb and the catalysis that contains the filler of palladium absorbs and is resolved by negative pole.The alternate level of the utility model is overlapping to be provided with positive and negative pole plate, and the capacity of battery is big.The utility model is simple in structure, is convenient to processing and manufacturing, and is easy to use, is a kind of cheap dry cell of secondary of dependable performance.

Fig. 1 is a radial section schematic diagram of the present utility model.

Fig. 2 is an axial section schematic diagram of the present utility model.

Below in conjunction with accompanying drawing, the utility model is described in further detail with an embodiment.

As shown in Figure 1 and Figure 2, the housing 1 of the utility model battery is totally enclosed cylinder, and cover plate 2 is established in the upper end of housing 1, and positive terminal 3 is drawn by cover plate 2 central authorities, makes anode.Negative terminal 4 is established in the bottom of battery, and negative terminal 4 is affixed with the base plate 5 of housing 1, and base plate 5 is made the negative pole of battery.Housing 1 internal upper part is filled the sponge filler 6 that speckles with the Metal Palladium powder, and the sponge filler is for 6 times an electrolysis tank 7.The PbO of the overlapping setting of one group of alternate level is set in the electrolysis tank 7 ₂Positive plate 8 and Pb negative plate 9.PbO ₂Establish barrier film 10 between positive plate 8 and the Pb negative plate 9.PbO ₂Positive plate 8 is made up of grid 11 and the titanium dioxide lead powder that is adsorbed on the grid 11.Pb negative plate 9 is made up of grid 11 and the lead powder that is adsorbed on the grid 11.Fill colloid solid electrolyte 12 between said positive and negative pole plate and in other spaces of electrolysis tank 6.Solid electrolyte 12 is the silica gel of the glue that obtains behind potassium silicate and the sulfuric acid reaction and the mixture of potassium sulfate.One group of PbO ₂Use lead-out wire 13 parallel connections on the grid 11 between the positive plate 8, and join with positive terminal 3.With lead-out wire 13 parallel connections on the grid 11, and join between one group of Pb negative plate 9 with negative terminal 4.

After measured, present embodiment and chromium-nickel charging dry cell is the same, can charging to be more than hundreds of times on the constant charger of current strength, and disposable capacity is greater than commercially available zinc-maganese dioxide dry cell and chromium one nickel charging dry cell.

Claims

1, a kind of dry cell that repeats to discharge and recharge comprises columnar housing (1), Pbo ₂Positive plate (8), Pb negative plate (9) and electrolysis tank (7) is characterized in that being provided with in the electrolysis tank (7) PbO of the overlapping setting of one group of alternate level ₂Positive plate (8) and Pb negative plate (9) are filled the colloid solid electrolyte (12) that the silica gel that obtained by potassium silicate and sulfuric acid reaction and potassium sulfate are formed in the electrolysis tank (7), PbO ₂Positive plate (8) positive terminal (3) parallel connection, Pb negative plate (9) is with negative terminal (4) parallel connection, at the filler (6) of the top of electrolysis tank (7) filling containing metal palladium.

2, the dry cell that repeats to discharge and recharge as claimed in claim 1 is characterized in that said PbO ₂Positive plate (8) is made up of grid (11) and the titanium dioxide lead powder that is adsorbed on the grid (11), and said Pb negative plate (9) is made up of grid (11) and the lead powder that is adsorbed on the grid (11).

3, the dry cell that repeats to discharge and recharge as claimed in claim 2, the filler (6) that it is characterized in that said containing metal palladium is the sponge filler that is stained with the Metal Palladium powder.