Uvic Industry Partnerships Inc.

Palcan Fuel Cell Co. Ltd.

Ballard Power Systems Corporation

Zuomin Dong

Guang Wu

Martin Perry

Ryan N Mackie

Dongming Lu

John Jianyue Shen

Rong Zheng

Gaofeng Gary Wang

Michael E Pastula

Raymond Belanger

Walter R Merida Donis

Ken W Kratschmar

John J Y Shen

Dual-clutch transmission assemblies for use with electric vehicles include a first shaft having a plurality of input gearwheels mounted thereon. The assembly further includes a second shaft having a plurality of intermediate gearwheels that are freely rotatable with respect to the second shaft and situated to mesh with respective input gearwheels on the first shaft. The assembly also includes a first clutch mounted to the first shaft and a second clutch mounted to the first shaft, the second clutch being spaced apart from the first clutch along a longitudinal axis of the first shaft. The assembly can further include a gear selector disposed on the second shaft to selectively engage at least one of the intermediate gearwheels of the second shaft to lock the at least one intermediate gearwheel to the second shaft such that the at least one intermediate gearwheel co-rotates with the second shaft.

Electric drive system with a novel dual-clutch transmission

A hybrid drive system includes a transmission having first and second parallel input shafts. The first and second parallel input shafts are selectively coupled together via a plurality of gearwheels operable to vary the rotational speed of the second parallel shaft relative to the first parallel shaft. The hybrid drive system includes at least one irreversible drive machine coupled to the transmission and operable to provide torque to at least one of the first or second parallel input shafts, and at least one reversible drive machine coupled to the transmission and operable to provide torque to at least one of the first or second parallel input shafts.

Hybrid drive system with multiple drive machines

A duct interconnecting two channels in a fuel-cell flowfield is disclosed. In use, responsive to a flow velocity differential as between the two channels, reaction product water (in the case of a PEM fuel cell) is drawn from one channel to the other via the duct so as to aid in the removal of reaction product accumulations in one or the other of the channels. Each of the two channels may have an associated flow-velocity-increasing means (such as an in-line venturi) associated with each end of the duct. Depending on the location of the duct within a flowfield, the duct may also help to maintain a desired pressure drop and flow of reactant gas along each channel, which helps propel excess water along the channels, and, when the oxidant is oxygen in air, helps prevent localized oxygen depletion.

Fuel cell flowfield design for improved water management

A solid-cage ambient-pressure PEM fuel cell stack having internal manifolds for the fuel gas and configured for accepting oxidant gas and cooling fluid via external manifolds/plena is disclosed. The fuel cell stack is contained in a solid cage comprised of a bottom end plate, a top end plate and four L-shaped struts. Each strut is attached at each end to a corner of the end plates so as to form a rigid rectangular parallelepiped cage, within which the fuel cell stack is contained. A pressure plate is disposed between the fuel cell stack and the top end plate. The pressure plate may be displace downwards, typically by way of an array of jack screws, so as to compress the fuel cell stack between the pressure plate and the bottom end plate. The vertical corners of the fuel cell stack engage the inside corners of the struts to further support the fuel cell stack.

Solid cage fuel cell stack

In solid polymer electrolyte fuel cells, a laminar flow of a dilute oxidant stream, for example air, may be disrupted by incorporating obstacles in the channels of an oxidant flow field. The laminar flow is changed to turbulent flow thereby enhancing the flow of oxygen to the membrane electrode assembly in the fuel cell and improving fuel cell performance.

Oxidant flow field for solid polymer electrolyte fuel cell

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Victoria, Canada

Zuomin Dong