Switch system
AssigneeSubaru Corporation
InventorYo Masuda
Life of this patent
Estimating the term…
Abstract
A switch system includes a system main relay, a temperature measuring unit, and a controller. The system main relay is configured to electrically connect a battery and an onboard device to each other by turning on a contact point, and to electrically disconnect the battery and the onboard device by turning off the contact point. The temperature measuring unit is configured to measure temperature of the contact point of the system main relay. The controller is configured to cause the system main relay to repeatedly turn on and off the contact point at a predetermined timing, (i) when the temperature of the contact point of the system main relay is a predetermined temperature or more or (ii) when an amount of rise in the temperature of the contact point is a predetermined amount or more.
Claims14
A switch system, comprising:
- a system main relay configured to:
- electrically connect a battery and an onboard device to each other by turning on a contact point;
- and
- electrically disconnect the battery and the onboard device by turning off the contact point;
- a temperature measuring unit configured to measure a temperature of the contact point of the system main relay;
- a controller configured to cause the system main relay to repeatedly turn on and off the contact point at a predetermined timing, (i) when the temperature of the contact point of the system main relay is a predetermined temperature or more, or (ii) when an amount of rise in the temperature of the contact point is a predetermined amount or more;
- and
- a charging main relay that supplies an electric power to the battery, a contact point of the charging main relay being coupled to a connecting line of the battery to the system main relay, and another contact point of the charging main relay being coupled to a charger that transmits the electric power to the charging main relay,
- wherein the system main relay, comprises:
- a first system main relay coupleable to a first electrode of the battery;
- and
- a second system main relay coupleable to a second electrode of the battery, and
- wherein the controller is further configured to repeatedly turn on and off the contact point of one of the first system main relay and the second system main relay while another one of the first system main relay and the second system main relay is maintained in an off state.
A switch system, comprising:
- a system main relay configured to:
- electrically connect a battery and an onboard device to each other by turning on a contact point;
- and
- electrically disconnect the battery and the onboard device by turning off the contact point;
- a temperature measuring unit configured to measure a temperature of the contact point of the system main relay;
- a controller configured to cause the system main relay to repeatedly turn on and off the contact point at a predetermined timing, (i) when the temperature of the contact point of the system main relay is a predetermined temperature or more, or (ii) when an amount of rise in the temperature of the contact point is a predetermined amount or more:
- a charging main relay that supplies an electric power to the battery, a contact point of the charging main relay being coupled to a connecting line of the battery to the system main relay, and another contact point of the charging main relay being coupled to a charger that transmits the electric power to the charging main relay;
- a resistor;
- and
- a pre-charge relay serially coupled to the resistor,
- wherein the resistor and the pre-charge relay are coupled in parallel to the system main relay,
- wherein the controller is further configured to turn on the pre-charge relay before repeatedly turning on and off the contact noint at the predetermined timing, and
- wherein the controller is further configured to maintain the pre-charge relay in an on state during the repeatedly turning on and off the contact point.
Dependencies are inferred from the claim text.