In at least one embodiment, an apparatus for a vehicle is provided. The apparatus includes a polyswitch and a switching device. The polyswitch includes a first resistance. The switching device is in parallel with the polyswitch. The switching device includes a second resistance that is less than the first resistance. The switching device is configured to enable a first current to flow therethrough when the vehicle is in an active mode. The switching device is configured to enable a first current to flow therethrough to power all electrical loads of the vehicle when the vehicle is in an active mode. The first resistance of the polyswitch is configured to enable a second current that is less than the first current to flow to a portion of the loads when the vehicle is in a sleep mode.

A switch box assembly is configured to house a switch box having a bus bar. The switch box assembly includes a holder, a nut housing and a guide. The holder includes a back wall. The back wall includes a slot for receiving the bus bar. The nut housing is configured to house a nut. The guide is disposed on the nut housing and adjacent the back wall, the guide dimensioned to guide the bus bar over a top surface of the nut. Accordingly, the guide prevents the bus bar from hitting the nut during installation.

A method for securing safety-relevant loads in a motor vehicle, including a main path arranged between a sub-on-board electrical system for a safety-relevant load of a motor vehicle and another sub-on-board electrical system for a non-safety-relevant load.

The sub-on-board electrical system for the safety-relevant load is supplied with power by an energy store. The main path includes at least one switch, and at least one detector for detecting a current flowing through the main path. At least one additional path is provided which is connected in parallel with the main path, the additional path having at least one switch. The method includes: opening the main path upon detection of a critical state, i.e., an overcurrent and/or an undervoltage or overvoltage on the sub-on-board electrical system for the safety-relevant load. The additional path is closed or kept closed while the main path is open. The additional path is subsequently reopened.

An on-board communication system includes an optical coupler that includes multiple optical transmission lines, and multiple on-board devices that are capable of communicating with each other with the optical coupler interposed therebetween.

An electrical junction box has a switch connected between a first connection terminal and a second connection terminal to which a fuse is mounted, and a control circuit configured to perform opening/closing control of the switch, has a storage unit for storing a standard resistance value in an initial state of the fuse and an amount of change in a resistance value of the fuse over time, and detects a first terminal voltage at the first connection terminal and a second terminal voltage at the second connection terminal. The control circuit opens the switch at a time of startup based on a control signal, calculates the resistance value of the fuse, calculates a reference resistance value, determines whether the fuse is correct by comparing the calculated resistance value of the fuse with the calculated reference resistance value, and outputs a first error signal if the fuse is incorrect.

An attachment assembly joining a fuse box and battery tray includes a fuse box having a mounting structure having a fuse bottom surface including a retainer structure joined therewith. The retainer structure includes a cylindrical boss having an attachment wall disposed within the cylindrical boss. A cutout is formed in the cylindrical boss. A battery tray includes a tray bottom surface. The tray bottom surface includes a mating structure including a pair of spaced annular walls extending therefrom defining a gap. Each of the annular walls includes notches formed therein. A J-nut is positioned in the cut out of the cylindrical boss and over an edge of the attachment wall retaining the J-nut on the attachment wall. The cylindrical boss is disposed between the pair of spaced annular walls in the gap and the cutout is aligned with the notches. The J-nut is positioned in the cut out and the notches rotatively aligning the battery tray relative to the fuse box.

An attachment structure for an electronic component accommodation box including a vibration proof structure includes a damping structure between a vehicle body side attachment member and a casing in which at least one electronic component is mounted. The damping structure includes first sliding portions, second sliding portions, and damping members interposed between the first sliding portions and the second sliding portions. The damping members generate sliding resistance between each of the first sliding portions and each of the second sliding portions when the casing moves relative to the vehicle body side attachment member.

In a fuse circuit body according to an embodiment, electricity generated by an alternator is supplied to a first battery from an alternator connecting portion via a first fusible portion and a first battery connecting portion and supplied to a second battery from the alternator connecting portion via a second fusible portion and a second battery connecting portion. Thus, the electricity from the alternator is supplied to the first battery only via the first fusible portion and supplied to the second battery only via the second fusible portion. Accordingly, the electricity supplied from the alternator to the first battery or the second battery is not required to pass through two fusible portions so that the electricity can be supplied to the first battery and the second battery with a small loss.

A fuse array for use in a vehicle electrical system having more than one battery, such as in a start-stop vehicle that automatically shuts off an engine when the vehicle comes to a stop and automatically restarts the engine when a driver starts driving again. The fuse array includes first and second discrete circuits, where the discrete circuits include their own internal bus bars and are electrically isolated from one another, even though they are part of the same fuse array. This enables the fuse array to independently provide battery power to different downstream electrical components, such as a power distribution device and various high amperage components, while still utilizing a single compact assembly.

A liquid discharge structure includes a bottom wall to be disposed tilted relative to a horizontal plane at a casing which is configured to be installed in a vehicle, a lateral wall arranged vertically at a lower end edge of the bottom wall, wherein the lower end edge is configured to be located on a lower side of the bottom wall being tilted, wherein the lateral wall has a discharge opening for liquid located at an end of the lateral wall closer to the bottom wall, a tubular rib wall projecting at least inwardly within the casing from the lateral wall so as to surround the discharge opening, and a partitioning rib wall which is arranged vertically on an inner surface of the bottom wall at a position closer to the lateral wall so that the partitioning rib wall extends intersecting a center axis of the tubular rib wall.