A method for improving the availability of an energy storage or transformation, EST, system of a vehicle. The method comprises providing an EST system model of coupled EST components of the EST system, identifying a fault or error in an EST condition parameter of the EST system, estimating an output value of the EST condition parameter based on the EST system model, identifying a vehicle situation which, in case of an at least temporary lack of operability of the EST system, belong to a predetermined group of vehicle situations defined as hazardous, and in response to identifying the vehicle situation belonging to the predetermined group of vehicle situations defined as hazardous, operating the EST system despite the fault or error in the EST condition parameter using the estimated output value of the EST condition parameter based on the EST system model.

A dual-battery fuel cell system is provided, including two supplemental batteries, each battery supporting/supplementing operation of a fuel cell stack in the system. Driving conditions associated with a fuel cell vehicle can be obtained. Based on the driving conditions, power sources of the fuel cell vehicle to provide power to fuel cell vehicle system can be determined, the power sources comprising the fuel cell stack and the two supplemental batteries. Operating conditions of each of the power sources can be assessed, and one or more of the power sources can be controlled to deliver power to the fuel cell vehicle system based on the operating conditions of each of the power sources.

A mobile automobile service and charging Center 50 with a trailer opening to intake multiple vehicles simultaneously by using multiple walls extending to the exterior used to lift and transverse automobiles to the interior for service. Interior mechanisms are hydraulic, magnetic, and air pressure operated to further lift and modify the position of the vehicle in service. The interior includes multiple electric charging stations, an interactive maintenance display center, multiple automated sensing devices used to detect car type and diagnose malfunctions, internal/external part delivery portals, lounge, a restroom, conference room, and mechanic sanitation areas. In all configurations the mobile automobile service and charging Center is a powered double decker, solar power supplemented mobile trailer. When dispatched for diagnostic and maintenance the Center will externally to the trailer or internally lift automobiles to an appropriate height based on the best ergonomic position for the mechanic and transverse the vehicles in to the mobile Center based on sensor feedback and mechanic biometrics. The Center provides multiple options for service from below or above the automobile, with floors that lower and a roof that will open to allow for above automobile servicing. Telescopic and piston driven support chairs and platforms are internally deployed to allow mechanics an efficient ergonomic seating, standing, or lying position to provide service without discomfort. Contained within the mobile service center are sensors designed to diagnose, track automobile location and service history, track tools and to display technologies to facilitate high efficiency automobile service; such as alternator replacements, oil changes, battery charging, hose replacements, spark plug replacements and other diagnostic, service, and charging services. All data gathered by the interactive service Center is logged and analyzed by intelligent predicting software to provide customers with the best performance and service data for each Automobile that enters and exits the Center.

A cooling system in a fuel cell electric vehicle comprising a first chamber configured to contain relatively hot fluid and a second chamber configured to contain relatively cold fluid. The ratio of cooling power/fan power of a positive displacement device at a heat exchanger is monitored and thermal energy transfer between coolant and the chambers is controlled based on the ratio. When the ratio is above a pre-defined value or value range, thermal energy from the first chamber is provided to the coolant in the coolant circuit and passed into the heat exchanger, after which part of the thermal energy of cooled coolant leaving the heat exchanger is provided to and stored in the second chamber. The stored cold thermal energy is released from the second chamber when the ratio is below the pre-defined value or value range. The invention also relates to a method of controlling a cooling system.

A fuel cell vehicle is disclosed. The fuel cell vehicle includes a front fuel cell mounted in a first space and a rear fuel cell mounted in a second space located at the rear side of the first space on the basis of the direction in which the fuel cell vehicle travels. The rear fuel cell includes a top surface lower than the top surface of the front fuel cell on the basis of the ground.

An electric-powered wheelbarrow in one aspect of the present disclosure includes a motor, a wheel, an electromagnetic brake, a control circuit, a signal-processing circuit, and a drive circuit. The electromagnetic brake includes an electromagnetic coil. The electromagnetic brake (i) applies a braking force to the wheel in response to the electromagnetic coil being de-energized and (ii) releases the braking force from the wheel in response to the electromagnetic coil being energized. The control circuit outputs a first control signal and a second control signal. The signal-processing circuit receives the first and second control signals to thereby output a deactivating signal. The drive circuit receives the deactivating signal and delivers an excitation current to the electromagnetic coil.

A transport refrigeration system includes a transportation refrigeration unit and a generator (13) coupled to a wheel axle (7A) of the transport refrigeration system via a coupling (11). The generator (13) is configured to be driven to generate electricity by rotation of the wheel axle (7A) and to supply that electricity to the transportation refrigeration unit. The coupling (11) that couples the generator and the wheel axle is a magnetic coupling (11).

Disclosed are a collaborative charging method, apparatus, and logistics device, which relate to the technical field of logistics. One specific implementation mode of the method comprises: judging whether remaining battery power of a first logistics device satisfies a preset charging condition; if so, determining a target second logistics device for charging the first logistics device; and controlling the target second logistics device to move to meet the first logistics device so as to charge the first logistics device. According to the implementation mode, collaborative charging between respective logistics devices can avoid problems such as low charging efficiency and energy waste caused by necessity of returning to a charging station for charging.

An electric work vehicle includes a mounted body enabling execution of a specific work. The electric work vehicle further includes a main frame, a cab in a front portion of the main frame, an electrical component unit on the main frame in a position lower than a lower surface of the cab, and a power take off (PTO) unit having a work machine drive unit for driving a work machine to execute the specific work by the mounted body, and a mounted motor for supplying rotational power, by electric power of the battery, to the work machine drive unit. In the PTO unit, the mounted motor is in a position lower than the lower surface of the cab and in a lowermost layer region of a space where the electrical component unit is disposed, and the work machine drive unit is disposed in a position rearward from the mounted motor.

Systems and methods are provided herein for delivering items using an electric vehicle charging station (EVCS) system. The EVCS system may comprise an EVCS for charge electric vehicles. The EVCS system may also comprise a delivery vehicle removably coupled to the EVCS. The EVCS may have a compartment and/or shelf designed to house the delivery vehicle. Upon receipt of a delivery request, the delivery vehicle departs from the EVCS and transports items (e.g., batteries, charges, purchases, etc.) to one or more users.