US 12,230,997 B2
Redundant power system
Tetsuo Morita, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Nov. 21, 2022, as Appl. No. 17/991,412.
Application 17/991,412 is a continuation of application No. PCT/JP2021/017495, filed on May 7, 2021.
Claims priority of application No. 2020-089584 (JP), filed on May 22, 2020; and application No. 2020-148347 (JP), filed on Sep. 3, 2020.
Prior Publication US 2023/0104265 A1, Apr. 6, 2023
Int. Cl. H02J 9/06 (2006.01); H02J 7/00 (2006.01)
CPC H02J 9/061 (2013.01) [H02J 7/0069 (2020.01)] 15 Claims
OG exemplary drawing
 
1. A power system comprising:
an electrical load;
a first line that includes a first power source connected to the electrical load;
a second line that includes a second power source connected to the electrical load;
an inter-line switch that is provided on a connection path connecting the first line and the second line, wherein
the first power source outputs a power supply voltage that enables driving of the electrical load, and
the second power source includes a storage battery that is chargeable by the power supply voltage of the first power source;
an anomaly determination unit that determines occurrence of an anomaly in the first line;
a state control unit that opens the inter-line switch if the anomaly determination unit determines the occurrence of an anomaly;
a first path and a second path that are provided in parallel to each other between a connection point to the connection path and the second power source in the second line;
a charging unit that is provided on the first path to charge the storage battery to a higher voltage than the power supply voltage of the first power source by power supply from the first power source; and
a discharge regulation unit that is provided on the second path to regulate discharge of the storage battery in the second line, wherein
the discharge regulation unit includes a rectifier element that regulates the flow of current from the connection point to the storage battery on the second path and generates a predetermined voltage difference between the voltage of the storage battery and the power supply voltage, and
the discharge regulation unit has a plurality of diodes connected in series as the rectifier element.