RU2517195C2 - Apparatus for catalytic recombination lead accumulator gases - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention relates to electrochemical industry and can be used in making lead accumulators. In the disclosed apparatus for catalytic recombination of gases, a housing is equipped with a channel for removing excess gases into the ambient environment, wherein upon opening of the valve based on a signal from a controller obtaining data from a temperature sensor, breakdown of the recombination apparatus is prevented during high-current charging of the accumulator owing to considerable overheating, and maintenance of accumulator batteries is becomes easier by avoiding the need to disconnect the recombination apparatus from the accumulators during high-current charging thereof.

EFFECT: high reliability of the catalyst apparatus which facilitates recombination of hydrogen and oxygen into water and return thereof into the accumulator, when charging and recharging a lead accumulator.

1 dwg, 1 tbl

Description

The invention relates to the electrochemical industry and can be used in the manufacture of lead batteries.

Known ventilation plug of a lead battery (Dasoyan MA, Aguf IA Fundamentals of calculation, design and production technology of lead batteries. L .: Energia, 1978. P.64-66), selected as an analogue, which facilitates unimpeded removal gases (hydrogen, oxygen) generated in the battery.

The disadvantage of the analogue is that the removal of hydrogen and oxygen from the accumulator resulting from the decomposition of water leads to a decrease in the level of electrolyte and an increase in its concentration. As a result, periodic replenishment of water into the battery is required. In addition, a mixture of hydrogen and oxygen is explosive under certain conditions.

As a prototype, a device was selected for the catalytic recombination of hydrogen and oxygen into water and its return to the accumulator (German Patent No. 2008218, Н01М 10/25). Such a device recombines gas, thereby significantly reducing the top-up of water and the adjustment of the density of the electrolyte in a lead battery.

The disadvantage of the prototype is that such a recombination device can be used in the battery in the constant charging mode only at low charging currents, when the volume of emitted gases is small, and the exothermic recombination process does not lead to emergency heating of the device. During the operation of lead large-capacity batteries, a higher volume of gases is released due to high charging currents, which leads to the failure of the recombination device due to its emergency overheating. Therefore, when charging with high currents, it is necessary to disconnect the recombination device from the battery, which leads to an increase in the cost of servicing batteries consisting of a large number of batteries.

The present invention is aimed at eliminating these disadvantages of the analogue and prototype and to improve the reliability of the system "battery - recombination device".

The problem is achieved in that in the proposed device for catalytic gas recombination, the housing is equipped with a channel for removing excess gas from the device when the valve is opened by a signal from the controller receiving data from the temperature sensor.

A comparative analysis with gas catalytic recombination devices shows that the proposed solution is new.

The invention is illustrated in figure 1 and consists in the following. The catalytic gas recombination device consists of a housing 1 with an opening 2 for connecting to the battery, a porous matrix 3 with a catalyst deposited on its surface, a channel 4 for removing excess gases from the device, valve 5, which is opened by a signal from the controller 6 receiving data from the temperature sensor 7. As a result of this, failure of the recombination device is prevented when the battery is charged with high currents due to significant heating. And also reduces the complexity of servicing batteries due to the lack of the need to disconnect the recombination device from the batteries when charging high currents.

By analogy with the prototype, a catalytic gas recombination device was manufactured, as well as the proposed gas catalytic recombination device for a lead battery. As shown by experimental data (see table), the proposed device for catalytic recombination of gases has greater reliability compared to the prototype by preventing excessive heating due to the automated removal of excess gases from the device. So, the proposed device for catalytic recombination of gases allows you to use it when charging the battery with currents up to 400 A, while the temperature of the device’s body does not rise above 48 ° C, while the catalytic recombination device, made by analogy with the prototype, fails due to emergency overheating.

Table The maximum temperature of the case of the catalytic gas recombination device when the battery is charged with a current of 400 A, ° C one The proposed device for catalytic recombination of gases 48 2 Prototype > 110

Claims (1)

A catalytic recombination device, oxygen and hydrogen in a lead battery, consisting of a housing in which there is a matrix with a catalyst deposited on its surface, characterized in that the device has a channel for removing excess gases into the external environment and a valve that opens by a signal from a controller receiving data from the temperature sensor.