Automatic reset of vehicle modules
Responsive to indication a user of a vehicle has provided input to an interface of the vehicle, electrical connections between a power distribution center and components of an electrical system of the vehicle are disconnected except an electrical connection between the power distribution center and an auxiliary battery of the electrical system.
1 . A vehicle comprising:
an automotive electrical system including a power distribution center with a microcontroller and a plurality of switches, an auxiliary battery configured to be electrically connected with the power distribution center via a first of the switches, and primary and secondary DC/DC converters each configured to be electrically connected with the power distribution center via second and third of the switches, respectively, the power distribution center being programmed to open, for a predefined period, the second, third, and at least some of other of the switches but not the first of the switches responsive to indication a user has requested a reset of the automotive electrical system such that power from the auxiliary battery flows to the power distribution center but not to the primary and secondary DC/DC converters, and responsive to expiration of the predefined period, to close the third of the switches to electrically reconnect the secondary DC/DC converter with the power distribution center before closing other of the switches.
2 . The vehicle of claim 1 , wherein the power distribution center is further programmed to open, for a predefined period, the second and the at least some of the other of the switches but not the first and third of the switches responsive to the indication and a health of the auxiliary battery.
3 . The vehicle of claim 1 further comprising latches and locks, wherein the power distribution center is further programmed to unlatch the latches and unlock the locks after the indication.
4 . The vehicle of claim 1 further comprising an interface configured to permit the user to input the indication.
5 . The vehicle of claim 4 , wherein the interface is further configured to display information related to the reset.
6 . The vehicle of claim 1 , wherein the secondary DC/DC converter is a protected DC/DC converter.
7 . The vehicle of claim 1 , wherein the auxiliary battery is a 12V battery.
8 . A method comprising:
responsive to indication a user of a vehicle has provided input to an interface of the vehicle, disconnecting electrical connections between a power distribution center and components, including a DC/DC converter and an ultracapacitor, of an electrical system of the vehicle except an electrical connection between the power distribution center and an auxiliary battery of the electrical system such that power from the auxiliary battery flows to the power distribution center but not the components; and
upon expiration of a predetermined period that begins with the disconnecting, reconnecting the components with the power distribution center, including reconnecting the DC/DC converter before the ultracapacitor, such that power from the auxiliary battery flows from the auxiliary battery through the power distribution center and to some of the components.
9 . The method of claim 8 , wherein the DC/DC converter is a protected DC/DC converter.
10 . The method of claim 8 further comprising, after the indication, unlatching latches of the vehicle or unlocking locks of the vehicle.
11 . The method of claim 8 further comprising displaying information via the interface related to the disconnecting.
12 . The method of claim 8 further comprising disconnecting the electrical connections except the electrical connection between the power distribution center and auxiliary battery, and an electrical connection between the power distribution center and a protected DC/DC converter.
13 . The method of claim 8 , wherein the indication is related to changing the auxiliary battery.
14 . An automotive electrical system comprising:
an auxiliary battery;
protected and main DC/DC converters; and
a power distribution center including a microcontroller programmed to, responsive to indication a user has requested a reset of the automotive electrical system, disconnect for a predetermined period electrical connections between the protected and main DC/DC converters and the power distribution center while maintaining an electrical connection between the auxiliary battery and power distribution center, and after expiration of the predetermined period, reconnect the protected and main DC/DC converters with the power distribution center.
15 . The automotive electrical system of claim 14 , wherein the microcontroller is further programmed to reconnect the protected DC/DC converter before the main DC/DC converter.
16 . The automotive electrical system of claim 14 , wherein the microcontroller is further programmed to, after the indication, unlatch latches or unlock locks associated with the automotive electrical system.
17 . The automotive electrical system of claim 14 , wherein the microcontroller is further programmed to generate output for display about the reset.