| 摘要 |
Dual voltage electrical installation of a heavy vehicle comprising high voltage energy storage means (BTT), at least one supercapacitor (SC) defining low voltage energy storage means, a first high voltage line (48V dir) permanently connected with said high voltage energy storage means (BTT), a first low voltage line (12V dir) always connected with said at least one supercapacitor (SC), a second high voltage line (48V K) connected with said first high voltage line, subordinate to a state of activation of a vehicle ignition key (KSW), a second low voltage line (12V K) connected with said first low voltage line, subordinate to a state of activation of said vehicle ignition key (KSW), charging means (Rzz, C) of said at least one supercapacitor by means of energy stored in the high voltage energy storage means (BTT), comparator means (R2) configured to measure a state of charge of the supercapacitor (SC) and accordingly control said charging means (Rzz, C) of the supercapacitor so as to completely disconnect said charging means (Rzz, C) from the power supply when it is not necessary. |
