BETA-VOLTAIC BATTERY AND METHOD OF ITS PRODUCTION Russian patent published in 2023 - IPC G21H1/02 

FIELD: manufacturing beta-voltaic batteries.

SUBSTANCE: method includes the manufacture of energy converters by forming sacrificial and residual layers on one side of the diamond substrate, synthesizing an epitaxial diamond layer over the residual layer, removing the sacrificial layer, and separating the epitaxial diamond layer with the residual layer from the main part of the substrate. For the resulting converters, the open-circuit voltage and short-circuit current are measured. Groups of converters are formed in such a way that within each group the open-circuit voltage differs by no more than 20%. In each group such a number of converters is left that when they are electrically connected in parallel within the group, all groups give out a short-circuit current with a difference of no more than 20%. Each resulting group of transducers is attached to a conductive substrate isolated from the substrates of other groups, and the transducers within the group are electrically connected in parallel. Then groups of transducers are installed on substrates inside the battery case, these groups are electrically connected between the terminals of the housing in series with each other, and a source of beta radiation in the form of a plate is installed on top of the transducers.

EFFECT: increase in the efficiency of obtaining electrical energy while reducing the number of rejected converters due to the use of converters with different values of no-load voltages and short circuit currents.

13 cl, 9 dwg, 1 tbl, 1 ex