US 10,374,442 B2 · Integrated multiple voltage energy storage system and method

Abstract

An integrated multiple voltage battery system includes a first pair of output terminals, a second pair of output terminals, a plurality of first battery cells connected in series with each other and operatively connected to the first pair of output terminals, at least one second battery cell operatively connected to the second pair of outlet terminals, and a plurality of switches, the plurality of switches arranged such that each first battery cell in the plurality of first battery cells can be selectively placed in parallel with the at least one second battery cell while electrically isolating the other of the plurality of first battery cells from the at least one second battery cell, wherein each of the plurality of first battery cells has a nominal open cell voltage which is about the same as a nominal open cell voltage of the at least one second battery cell.

Claims15

Dependent claims

An integrated multiple voltage battery system comprising:

a first pair of output terminals;
a second pair of output terminals;
a plurality of first battery cells connected in series with each other and operatively connected to the first pair of output terminals;
at least one second battery cell operatively connected to the second pair of outlet terminals;
and
a plurality of switches, the plurality of switches arranged such that each first battery cell in the plurality of first battery cells can be selectively placed in parallel with the at least one second battery cell while electrically isolating the other of the plurality of first battery cells from the at least one second battery cell, wherein each of the plurality of first battery cells has a nominal open cell voltage which is about the same as a nominal open cell voltage of the at least one second battery cell.

3 more elements

A method of operating an integrated multiple voltage battery system comprising:

serially connecting a plurality of first battery cells in series with each other;
operatively connecting the series connected plurality of first battery cells to a first pair of output terminals;
operatively connecting at least one second battery cell to a second pair of outlet terminals, the at least one second battery cell having a nominal open cell voltage which is about the same as a nominal open cell voltage of each of the plurality of first battery cells;
controlling a plurality of serially connected switch pairs to place a first cell of the plurality of first battery cells in parallel with the at least one second battery cell while electrically isolating a second cell of the plurality of first battery cells from the at least one second battery cell;
and
further controlling the plurality of serially connected switch pairs to electrically isolate the first cell from the at least one second battery cell while placing the second cell in parallel with the at least one second battery cell.

3 more elements

Dependencies are inferred from the claim text.

Integrated multiple voltage energy storage system and method

Life of this patent

Integrated multiple voltage energy storage system and method

Life of this patent

Abstract

Claims15