Bidirectional electrical power systems are provided that include versatile battery packs. For example, a battery pack is introduced which may have both a first interface or port for high voltage fast charging and discharging, and a second interface or port for low voltage supply of power to present equipment without requiring modification or retrofitting. The battery pack may include, for example, a first battery module within the battery pack; a second battery module within the battery pack; and a switching matrix within the battery pack and configured to connect the first and second battery modules in series or in parallel.

Disclosed are multiple embodiments of a trailer, and more specifically car and toy haulers for transporting a secondary EV vehicle such as a car, snowmobile or ATV and simultaneously provide EV charging capacity for the toy vehicle. The trailer is capable of recharging EV vehicle when parked and/or when in transit. The trailer includes an intelligent EV charging system to accept and control multiple power inputs. The EV charging system can convert the power from various types of power inputs and store the power within an on-board power bank. The EV charging system can also output power from the power bank to an EV vehicle in a fast or rapid charging manner.

A system for the electric power supply of a vehicle, wherein the vehicle comprises multiple electricity users, comprises an energy accumulator and a DC/DC converter, wherein the energy accumulator comprises n strands each having at least one energy accumulator cell and the DC/DC converter comprises n input modules, wherein each time one strand of the energy accumulator and one input module of the DC/DC converter form a closed circuit, wherein n circuits are interconnected, and wherein each circuit is connected to the users.

A communication device is installed in a vehicle. The communication device includes: a first communication section communicating with an interior of a vehicle; a second communication section communicating with an exterior of the vehicle; and a controller carrying out control such that communication by the first communication section and communication by the second communication section do not overlap Due thereto, peaks in an amount of power consumed by the communication device can be suppressed, and compactness of a built-in battery that is provided in the communication device can be realized.

Techniques are presented for scheduling the charging of electric vehicles (EVs) that protect the resources of local low voltage distribution networks. From utilities, data on local low voltage distribution networks, such as the rating of a distribution transformer through which a group of EVs are supplied, is provided to a load manager application. Telematics information on vehicle usage is provided from the EVs, such as by way of the original equipment manufacturer. From these data, the load manager application determines schedules for charging the group of EVs through a shared low voltage distribution network so that the capabilities of the local low voltage distribution network are not exceeded while meeting the needs of the EV user. Charging schedules are then transmitted to the on-board control systems of the EVs for implementation.

An example operation includes one or more of determining, by a transport at a first location, that the transport is not in use, determining, by the transport, a second location to transfer energy stored in the transport, maneuvering, by the transport, to the second location, discharging, by the transport, the stored energy to the second location, and maneuvering, by the transport, to the first location.

An electrical charging structure comprising: a plurality of panels coupled to a frame surrounding an electricity distribution asset; a roof panel fastened to the plurality of panels, thereby substantially enclosing the electricity distribution asset; and an electrical charging device having an electrical charging cable supported upon an external surface of a panel of the plurality of panels, wherein the electrical charging device is electrically connected to an electrical distribution board of the electrical distribution asset within an area substantially enclosed by the electrical charging structure.

Various disclosed embodiments include illustrative controller units, direct current fast charging (DCFC) units, and methods. In an illustrative embodiment, a controller unit includes a controller and a memory configured to store computer-executable instructions. The computer-executable instructions are configured to cause the controller to determine status of a power electronics module (PEM) of a direct current fast charging (DCFC) unit, and instruct the PEM to control power quality of a three-phase alternating current (AC) grid power signal in response to the determined status being available.

Disclosed herein are systems and method for temperature management. A system, such as a vehicle, includes a plurality of energy storage units that can include a supercapacitor. The system can include at least one heating unit coupled to the plurality of supercapacitors. The system can include at least one cooling unit coupled to the plurality of supercapacitors. The system can include at least one temperature sensor coupled to the plurality of supercapacitors. The system can include a controller, including a processor and a memory, configured to determine if a measured temperature from the at least one temperature sensor is within a predetermined range. The controller can also engage the heating unit, when the measured temperature is below the predetermined range. The controller can also engage the cooling unit, when the measured temperature is above the predetermined range.

A protection circuit 60 is provided with: switches 61, 62 positioned on a power line PL of an electricity storage element 22 and a load 12; first protection elements 63, 64, 65 connected in parallel with the switches 61, 62 and absorbing surge caused when the switches 61, 62 open and cut off discharge current; and a second protection element 66 connected in parallel with the load and flowing, back to the load, the surge caused when the switches 61, 62 open and cut off the discharge current.