A battery cell arrangement for an electrical storage device

Abstract

A battery cell arrangement comprises at least a first battery cell 16 and a second battery cell 18, wherein the first battery cell comprises a first housing, a first electrode (24, figure 2) and a second electrode (26, figure 2), and the second battery cell comprises a second housing, a third electrode (28, figure 2) and a fourth electrode (30, figure 2). A first bus bar 32 contacts the first electrode and the third electrode and a second bus bar 34 contacts the second electrode and the fourth electrode outside of the housings. A first vapour chamber 42 is arranged on the first bus bar 32 and a second vapour chamber 46 is arranged on the second bus bar 34, these chambers being used to improve heat transfer and dissipation from each battery cell. The vapour chambers may be planar heat pipes. The respective vapour chambers may comprise a housing 52 formed of an electrically insulated material and providing airflow ducts (54, figure 4). The respective vapour chambers may each comprise a tapering 56 where the housing connects to the bus bar.

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