Switched dual battery system

Details Switched dual battery system Switched dual battery system

H - Electricity

01

M

H01M 10/42 (2006.01) H01M 2/02 (2006.01) H01M 2/20 (2006.01) H01M 10/04 (2006.01) H01M 10/12 (2006.01) H01M 2/30 (2006.01) H01M 2/34 (2006.01)

Patent

CA 2056614

2056614 9016090 PCTABS00003 A switchable dual battery (101) includes main and reserve batteries (202, 204) disposed within a battery housing (10) having conventional external dimensions and battery terminal locations. The container portion (14) of housing (10) has a parition wall (34) which isolates main battery cells (38) from reserve cells (42). Spaced, parallel internal walls (36, 40) define main and reserve series of cells (38, 42) in which battery cell elements (37, 41) are disposed. A switch (100) regulates access to power from the reserve battery. A recharge circuit includes a diode (110) and variable resistor (112) to permit limited current flow into the reserve battery (104) during recharging but prevent reserve battery drain during normal vehicle operation. When the main battery becomes drained, switch (100) is actuated to bring the reserve battery (204) into parallel with the main battery (202).

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