EC Power | Date: 2016-01-21
Fuel cell systems, e.g. systems including proton exchange membrane (PEM) fuel cells, are engineered to have more than one internal electrical resistance that can change according to temperature. Such changes in internal electrical resistance levels allow rapid heat-up of the fuel cells from low temperatures to an elevated temperature that is optimal for water management and fuel cell operation. The fuel cell systems can include at least one fuel cell and at least one resistor-switch unit electrically connected to the at least one fuel cell. The at least one resistor-switch unit includes a resistor and a switch in which the switch is electrically connected in parallel with the resistor.
EC Power | Date: 2016-01-13
A water heating apparatus for supply of heated water to an installation comprises a combined heat and power (CHP) unit, a heat storage means, and a secondary heating device. The CHP unit and the secondary heating device are arranged to operate in a first mode where the CHP unit provides heat to the heat storage means and the secondary heating device provides all the heated water required to meet the heat demand of the installation; and to operate in a second mode where the secondary heating device is inactive, and the heated water to meet the heat demand is provided by the CHP unit and/or from the heat storage means.
EC Power | Date: 2015-07-27
Rechargeable batteries, charging methods and systems for fast charging of the battery under all environmental temperatures and without causing battery degradation are disclosed.
EC Power | Date: 2014-07-30
Electrochemical cells that include resistor switch assemblies that can operate according to temperature and batteries and power systems including such cells are disclosed.
EC Power | Date: 2015-11-25
Provided is an all solid-state lithium battery including solid battery materials and whose ohmic resistance is modulated according to temperature. The all solid-state lithium battery can include a solid electrolyte; at least two terminals for operating the battery at one level of internal resistance (R1) over a temperature range of the battery between a first temperature (T1) and a second temperature (T2); at least one high resistance terminal for operating the battery at a second level of internal resistance (R2) outside of either T1 or T2; and a switch that activates R2 when the temperature of the battery is outside of either T1 or T2. The battery can be configured to include at least one resistor sheet embedded within a cell of the battery and electrically connected to the at least one high resistance terminal.
EC Power | Date: 2014-06-25
A catalytic converter apparatus comprises: a catalytic converter 2; a flow path for directing exhaust gas 10 through the catalytic converter 2; a cavity 20 for housing the catalytic converter 2; and a cooling apparatus for cooling at least a part of an inner surface 28 of the cavity 20; wherein when the catalytic converter 2 is housed within the cavity 20 a gap 26 is formed between the inner surface 28 of the cavity and an outer surface 32 of the catalytic converter 2 with the gap 26 extending around a major portion of the outer surface 32 of the catalytic converter 2.
EC Power | Date: 2014-02-25
A rechargeable battery that features two or more levels of internal resistance according to various temperature ranges is disclosed.
EC Power | Date: 2014-05-01
EC Power | Date: 2016-10-19
A temperature sensor apparatus for a water storage apparatus in which an amount of hot water stored can be determined by the vertical position of a hot/cold water boundary, the apparatus comprising: a plurality of temperature sensors for installation at different height levels in the water storage apparatus, and a control unit, wherein the control unit is arranged to determine sensor location, in use, based on the order in which the sensors detect a temperature change during operation of the water storage apparatus.
EC Power | Date: 2014-04-17
A rechargeable battery, module or a pack, having different levels of internal resistance that operate at different temperatures are disclosed. In a subfreezing environment, the battery can exhibit high resistance which once operated or activated, generates heat internally to warm up the battery quickly. Once the batter reaches normal operating temperatures, the battery can switch to a low resistance operating mode, thereby delivering superior power and energy despite operating in a very low ambient temperature.