摘要:
According to the invention, a fuel cell system features a fuel cell (14) having a solid polymer electrolyte membrane (4), and an antioxidant residing in or contacting the solid polymer electrolyte membrane (4), for inactivating active oxygen.
摘要:
The apparatus contains a means to create superheated steam at a temperature of preferably 800° C. The superheated steam is delivered to a catalytic decomposition converter that contains ceramic membranes that function to decompose water H2O into its constituent elements of diatomic hydrogen and oxygen. In one embodiment, a cascade of catalytic cells, one set for hydrogen and one set for oxygen are arranged in a unique “Cascade and Recirculate” configuration that greatly improves the throughput of the catalytic process. Only enough hydrogen is produced and delivered to the fuel cell according to the real time demand. There is no hydrogen storage on board. An electrically heated boiler initializes the process, and thereafter the heat from the exothermic reaction of a high-temperature fuel cell, and a small hydrocarbon burner sustains the operational superheated steam temperature. By using the by-product heat of a high temperature fuel cell in conjunction with the efficient combustion of a small amount of conventional hydrocarbon fuel, a unique thermodynamic hybrid system is created. The electrical energy generated by the fuel cell is used to maintain the charged state of a traction battery. A plurality of pumps, valves, regulators and sensors under microprocessor control manage the processes.
摘要:
The progress of activation of a fuel cell is appropriately transmitted in accordance with the rise of the temperature of the fuel cell, and an estimated time till the completion of the activation is displayed with higher accuracy. To realize this, the current percentage of a fuel cell temperature is displayed on a gauge (G) which displays, as a starting point, the temperature of the fuel cell at the start of the activation and which displays, as an end point, the temperature of the fuel cell at the completion of the activation. The percentage of the temperature is displayed as the estimated time till the completion of the activation, whereby an adverse effect due to a low accuracy in the case of the estimation of the time is eliminated. When the fuel cell is activated for a failure check, the percentage of an actually elapsed time with respect to a time required to complete the failure check may be displayed on the gauge (G). After comparing the percentage of the actually elapsed time with respect to the time required to complete the failure check with the percentage of the temperature of the fuel cell, the smaller value is preferably displayed.
摘要:
A fuel cell system includes a fuel cell stack, a warming up status detector, a warming up completion threshold setter, an informing device, an estimator, and a threshold changer. The warming up status detector is configured to detect a warming up status of the fuel cell stack. The informing device is configured to inform of completion of warming up when a value corresponding to a warming up status detected by the warming up status detector is equal to or higher than a threshold value set by the warming up completion threshold setter. The estimator is configured to estimate whether generated water is frozen in the fuel cell stack. The threshold changer is configured to change the threshold value set by the warming up completion threshold setter in accordance with a freezing state of the generated water in the fuel cell stack estimated by the estimator.
摘要:
A method for producing a borohydride is described and which includes the steps of providing a source of borate; providing a material which chemically reduces the source of the borate to produce a borohydride; and reacting the source of borate and the material by supplying heat at a temperature which substantially effects the production of the borohydride.
摘要:
Systems and methods for initiating use of, or starting up, fuel cell stacks in subfreezing temperatures. The fuel cell stacks include a thermal management system that is adapted to deliver a liquid heat exchange fluid into thermal communication with a fuel cell stack, such as to heat the stack during startup of the stack when the stack is at a subfreezing temperature or operated in a subfreezing environment. In some embodiments, the thermal management system includes a heat exchange circuit that is configured to provide delivery of the liquid heat exchange fluid to the fuel cell stack even when the conduits are at a subfreezing temperature. In some embodiments, the fuel cell system is configured to deliver liquid heat exchange fluid from the fuel cell stack and heat exchange circuit when the thermal management system is not being utilized.
摘要:
A control system and method for a fuel processing system. The control system automates the operation of a fuel processing system by monitoring operating parameters and automatically controlling the operation of the system responsive to the monitored parameters, predefined subroutines and/or user inputs.
摘要:
A fuel cell power plant comprises a fuel reforming system (1). The fuel reforming system (1) comprises a vaporizer (7) which vaporizes liquid fuel and supplies fuel vapor to a reformer (9). The vaporizer (7) heats injected fuel so as to vaporize it by a heating elements (7A), and supplies it to the reformer (9) via a fuel vapor supply passage (32) comprising a first valve (17). In a standby mode of the vaporizer (7) when the first valve (17) is closed, surplus fuel and heat energy in the standby state are recovered by providing a recovery passage (19, 20) which recovers fuel in the vicinity of the heating elements (7A) to the fuel tank (6) without allowing it to flowing into the vapor supply passage (32).
摘要:
Fuel cell stacks and systems with thermal management systems to deliver a liquid heat exchange fluid into thermal communication with the stack and thereafter recycle the stream. In some embodiments, the system is adapted to selectively apportion the recycled liquid stream between a stream that, prior to reuse as a heat exchange stream, is returned to a fluid reservoir and/or selectively cooled, and/or selectively returned to the reservoir and mixed with heat exchange fluid in the reservoir, and a stream that is returned into thermal communication with the stack without returning the stream to the reservoir and/or without heating or cooling and/or without being mixed with additional heat exchange fluid. In some embodiments, the system is adapted to automatically apportion the recycled stream responsive to its temperature. In some embodiments, the system includes a thermostatic valve and/or selectively apportions the recycled stream without requiring an electronic controller or manual input.
摘要:
Rear vehicle structure for housing one or more electrical system unit(s) in the rear of a vehicle, in which side members are provided proximate to a rear suspension of the vehicle, at least one side member on either side of the vehicle. Extension parts extend rearwardly from respective rearward ends of the side members, a forward cross member is located substantially at a forward end of the side members and above the rear suspension members, and a rearward cross member is located substantially at a rearward end of the side members and above the rear suspension members. The electrical system unit is fixedly attached to the top of at least one of the forward cross member or the rearward cross member.