Vehicle power supply system

A vehicle power supply system configured for providing redundant high-voltage and low-voltage power supply for an electric vehicle or hybrid-electric vehicle, the power supply system comprising:

• a first high-voltage battery unit having a positive terminal and a negative terminal, wherein the positive terminal is connected to a positive power distribution arrangement,
• a second high-voltage battery unit having a positive terminal and a negative terminal, wherein the positive terminal is connected to the negative terminal of the first high-voltage battery unit via an intermediate power distribution arrangement, and wherein the negative terminal is connected to a negative power distribution arrangement,
• a first bypass line connecting the positive power distribution arrangement with the intermediate power distribution arrangement, wherein the first bypass line includes a first circuit breaker,
• a second bypass line connecting the negative power distribution arrangement with the intermediate power distribution arrangement, wherein the second bypass line includes a second circuit breaker,
• a first DC/DC converter connected to the positive and negative power distribution arrangements and configured for providing a first low-voltage DC output,
• a second DC/DC converter connected to the positive and negative power distribution arrangements and configured for providing a second low-voltage DC output,
• a first main contactor connected to the positive power distribution arrangement and a second main contactor connected to the negative power distribution arrangement, wherein the first and second main contactors in engaged state are configured for connecting the first and second high-voltage battery units with a first high-voltage DC output, and in disengaged state configured for disconnecting the first and second high-voltage battery unit from the first high-voltage DC output,
• a third main contactor connected to the positive power distribution arrangement and a fourth main contactor connected to the negative power distribution arrangement, wherein the third and fourth main contactors in engaged state are configured for connecting the first and second high-voltage battery units with a second high-voltage DC output, and in disengaged state configured for disconnecting the first and second high-voltage battery units from the second high-voltage DC output.