Patent ID: 7414334
Filing Date: 2008-08-19
Classification: H02H,H02J

Abstract:
1. A circuit for limiting over-voltages in energy storage modules with a plurality of energy storage elements connected in series circuit and wherein the series circut is connected between a first potential and a second potential comprising: a number “n” of energy storage elements connected in series between a first potential source and a second potential source wherein “M” is a maximum number of directly interconnected ones of said energy storage elements in a combination of less than all of said energy storage elements; and a plurality of voltage-limiting elements wherein for M≧2 a respective one of said voltage-limiting elements is connected in parallel with each of the combinations of said energy storage elements, another one of said voltage-limiting elements is connected in parallel with a first one of said energy storage elements connected to the first potential and a further one of said voltage-limiting elements is connected in parallel with an n