A vehicle battery diagnosis method and system are provided. A controller completes charging a battery by stopping supply of current from a charger to the battery. The controller measures a relaxation voltage corresponding to a decrement of a voltage of the battery during a predetermined time period directly after the charging of the battery is completed. The controller estimates the state of health (SoH) of the battery in accordance with the relaxation voltage.

A low-voltage system of a transport refrigeration unit (TRU) includes a low-voltage direct current (LVDC) source; and a distribution bus coupled to the LVDC, the distribution bus is coupled to a compressor, at least one condenser, and at least one evaporator.

An electric storage system is provided including a switching unit which is arranged between an electric storage unit of an electric storage device which is configured to be connectable in parallel with another power supply device and wire which is configured to electrically connect the electric storage device and the another power supply device, wherein the switching unit is configured to switch the electrical connection relationship between the wire and the electric storage unit; and a restriction unit which is connected in parallel with the switching unit between the wire and the electric storage unit, has a higher resistance than the switching unit, and is configured to cause current to flow in a direction from the electric storage unit to the wire and suppress current flowing in a direction from the wire to the electric storage unit.

A solar wireless collector beacon (data hub) and associated method stores source data, received wirelessly from a data source, in a data buffer of the data hub. Sensor data is read from one or more onboard sensors of the data hub and stored as structural and/or environmental data in the data buffer. The environmental data is processed to determine an operating status of a vehicle being used with the data hub and an energy harvester of the vehicle is controlled to harvest energy from the vehicle based on the operating status. One or more of the operating status, the source data, and the environmental data is wirelessly transmitted from the data hub to an external device.

A generator set for a transport climate control unit is provided that is operable at a first frequency and a second frequency. The generator set includes a generator, a prime mover configured to operate at a first non-zero speed and a second non-zero speed that is less than the first non-zero speed, and a genset controller configured to control operation of the generator set. When operating at the first non-zero speed, the genset controller is configured to monitor a prime mover load parameter to determine whether the prime mover is approaching or has exceeded an overload or stall situation. The genset controller is configured to reduce the speed of the prime mover from the first non-zero speed to the second non-zero speed to prevent the overload or stall situation.

A device supplies energy to a sensor arrangement in a rail vehicle. The device has a housing in which there is arranged a coil which can be inductively coupled to a motor cable carrying an alternating current. The housing is embodied to enclose part of a length of the motor cable, and the coil is wound around an annular coil core which concentrically or substantially concentrically surrounds the motor cable. The housing has multiple parts including at least one first and one second housing part. The annular coil core is implemented in multiple parts and a first coil core part is arranged in the first housing part and a second coil core part is arranged in the second housing part. The housing is further embodied to mechanically secure the motor cable to a component of the rail vehicle and/or to mechanically connect the motor cable to a further motor cable.

A vehicular power system includes a battery branch including a battery unit arranged in series with a diode, and a high-capacity unit having a maximum voltage that exceeds a nominal voltage of the battery unit. The battery branch and high-capacity unit are arranged in parallel, to feed a load side of the vehicular power system. The battery branch further includes a switching arrangement configured to disconnect the battery unit in response to excessive load-side current. The switching arrangement may allow the high-capacity unit to inject current into the load side at a voltage less than the nominal voltage of the battery unit and/or may allow the high-capacity unit to absorb regenerated current from the load side at a voltage which is greater than the nominal voltage of the battery unit.

In a method for operating an electric vehicle, including an electrical drive device for driving the vehicle, a control device for controlling the driving of the vehicle, a first energy storage device for supplying the control device with a first DC voltage, a second energy storage device for supplying the drive device with a second DC voltage, and an energy supply unit providing an output DC voltage, the first energy storage device is connected to the energy supply unit via a converter device, the second energy storage device is connected to the energy supply unit, the converter device converts the output DC voltage into the first DC voltage, a first power flow from the first energy storage device to the second energy storage device is prevented and a second power flow from the second energy storage device to the first energy storage device is prevented.

Electronic devices include: a first electronic device capable of being always supplied with power; and a second electronic device capable of being supplied with the power through an operation by an occupant. Each of power supply hubs is located near the first electronic device, and connected to a battery or another one of the power supply hubs by one of main power supply lines. Each of the first and second electronic devices is connected to nearby one of the power supply hubs. Each of zone ECUs outputs a control signal to one of power supply ICs so as to distribute, to the first and second electronic devices, the power supplied to one of the power supply hubs by one of the main power supply lines.

A machine power system of a machine may use energy provided by one or more batteries. The machine power system may also use battery data associated with the batteries to monitor the batteries, configure electrical components to operate in association with the batteries, to provide battery information via a user interface, and/or for other operations. The machine power system may be configured to use a particular battery data format. A battery data translator receives native battery data provided by a battery, uses a translation map associated with the battery to convert the native battery data into translated battery data formatted based on the particular battery data format used by the machine power system, and provides the translated battery data to the machine power system.