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US 2022/0089030 A1Published application
Redundant power supply
AssigneePolestar Performance AB
InventorsOlof Norberg, Niklas Roos, Johan Gerard Hageman, Robert Wassmur
Life of this patent
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Abstract
A system as described herein can be used to maintain safety features for an electric vehicle. These features include redundant low-voltage power provision and redundant cooling, each provided by use of multiple battery strings.
Claims15
A power supply system comprising:
- a first battery string configured to provide power at a first voltage;
- a second battery string configured to provide power at a second voltage;
- a transformer configured to receive power at the first voltage from the first battery string, and configured to receive power at the second voltage from the second battery string;
- a drive system;
- and
- a relay configured to selectively couple the first battery string and the second battery string to deliver power to the drive system at a voltage equal to the sum of the first voltage and the second voltage.
3 more elements
A power supply system comprising:
- a first battery string configured to provide power at a first voltage;
- a second battery string configured to provide power at a second voltage;
- a drive system;
- a high voltage junction box;
- and
- a relay configured to selectively couple the first battery string and the second battery string such that:
- in a normal operating condition the relay delivers power to both the drive system and the junction box at a voltage equal to the sum of the first voltage and the second voltage;
- and
- in an abnormal operating condition the relay delivers power to the junction box at one of the first voltage and the second voltage.
6 more elements
A method for supplying a low-voltage direct current output from at a high-voltage battery system, the method comprising:
- providing a first power output having a first voltage from a first battery string;
- providing a second power output having a second voltage from a second battery string;
- selectively combining, via a relay, the first power output and the second power output, such that:
- in a normal operating condition the relay delivers power to both the drive system and the junction box at a voltage equal to the sum of the first voltage and the second voltage;
- and
- in an abnormal operating condition the relay delivers power to the junction box at one of the first voltage and the second voltage.
3 more elements
A method for supplying a low-voltage direct current output from at a high-voltage battery system, the method comprising:
- providing a first power output from a first battery string configured to provide power at a first voltage;
- providing a second power output from a second battery string configured to provide power at a second voltage;
- providing a transformer coupled to both the first battery string and the second battery string, wherein the transformer receives power at the first voltage from the first battery string and also receives power at the second voltage from the second battery string;
- providing a drive system;
- and
- providing a relay configured to selectively couple the first battery string and the second battery string to deliver power to the drive system at a voltage equal to the sum of the first voltage and the second voltage.
3 more elements
Dependencies are inferred from the claim text.