Sid Nash

HVBatteryCharger

Gen 2 grid charger. Click the "Caption" tab below picture for details.

HVBatteryCharger
Sid Nash, Jul 3, 2023
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  • Album:
    Grid Charger
    Uploaded By:
    Sid Nash
    Date:
    Jul 3, 2023
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    Date / Time:
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    • The brown wire feeding the PS is connected to the narrow prong(ACL) of the 120VAC plug.
    • The switch disconnects the high voltage DC positive wire between the power supply(PS) and the Prius HV battery.
    • The volt meter is connected on HV battery side of the switch so voltage can still be read when the switch is "off".
    • On the PS side of the switch there is an added circuit to protect the PS in case the AC feed is disrupted while the switch is on, causing back-feed from the Prius HV battery that could damage the PS. This circuit consists of a 100k resistor between the red(+) and black(-) wires of the PS, followed by a 1N4007 diode |>| which is connected to the switch. The black band on the diode is on the switch side. Here is a schematic that includes this circuit.
    • All connections(mentioned above) that are unseen in the picture are inside the electrical box where the switch is mounted.