Crompton Technology Group Limited

Robert Edwin Finney

James William Bernard

Jon Pethick

Paul Daniel Liddel

Thomas Beale

James Alexander Ashwell

Christopher Jan Bremner-Stokes

A battery cell stack casing includes casing walls defining a housing interior for receiving a battery cell stack; a first end plate provided between the walls at a first end of the casing to close a first end of the housing interior. The casing also include a second end plate provided between the walls at a second end of the casing to close a second end of the housing interior. The casing walls have a multi-layer structure include: an inner layer having a first side facing into the housing interior and a second opposite side; an outer layer spaced outwardly from the second side of the inner layer; a thermally insulating volume defined between the second side of the inner layer and the outer layer, the thermally insulating material containing a low density thermally insulative material e.g., foam or other insulative material; and a layer of intumescent material provided on the first side of the inner layer.

Battery stack casing

A fiber-reinforced polymer composite shaft for transmitting loads along a central axis. The composite shaft comprises a first interface surface extending along the central axis and comprising at least one helical groove and/or a plurality of circumferential grooves for engaging with at least one corresponding helical ridge and/or a plurality of corresponding circumferential ridges of a second interface surface of an end fitting. The at least one helical groove and/or the plurality of circumferential grooves comprises at least one flank with a flank angle of between 32° and 51°. In such an assembly, a preload structure is arranged to provide a radial biasing force to bias the first interference surface against the second interference surface.

Composite end connections

A fibre-reinforced polymer composite shaft for transmitting loads along a central axis is provided. The composite shaft comprises a first interface surface extending along the central axis and comprising at least one helical groove and/or a plurality of circumferential grooves for engaging with at least one corresponding helical ridge and/or a plurality of corresponding circumferential ridges of a second interface surface of an end fitting. The at least one helical groove and/or the plurality of circumferential grooves comprises at least one flank with a flank angle of between 32° and 51°. In such an assembly, a preload structure is arranged to provide a radial biasing force to bias the first interference surface against the second interference surface.

A composite shaft with an end fitting mounted on one end of said shaft and a preload structure arranged to provide a biasing force to bias the composite shaft against the end fitting. The end fitting has a first interface surface, the first interface surface being tapered at an angle to the shaft axis and the shaft has a second interface surface for engagement with the first interface surface and is tapered at an angle to the shaft axis, the second interface surface extending axially from a first end to a second end, the shaft being thicker at the second end than at the first end. The shaft has a third interface surface and the preload structure has a fourth interface surface and the contact pressure of the third interface against the fourth interface increases from the first end of the shaft to the second end of the shaft.

Growing community of inventors

Charlbury, United Kingdom

Robert Edwin Finney