Battery module clamping arrangement

A battery module clamping arrangement is disclosed for clamping a battery module 12 in a battery pack (10, fig 1), the battery pack comprising a cooling system 14. The clamping arrangement comprises means 52 for applying a clamping force to the battery module such that the battery module maintains thermal contact with the cooling system, and may also include means 58 for applying a counter force to the cooling system. Support means 56 are provided for supporting the battery module. The support means comprise a compression stop, preferably in the form of a compression pin (fig 9A). This can allow the battery module to maintain thermal contact with the cooling system while ensuring that any additional forces are transferred through the support means rather than through the cooling system. The clamping arrangement is preferably arranged such that the battery module contacts the compression stop when the clamping force is above a predetermined value, which could lead to deformation of the cooling system. A thermally conductive pad 54 for providing thermal contact between the battery module and the cooling system is also disclosed.