Rechargeable battery pack

Abstract

A rechargeable battery pack for a transport refrigeration unit (TRU) (Fig. 1, 10), comprising a framework 20 by which the pack is mounted to the TRU in use; and a battery compartment 40 for plural rechargeable battery cells (Fig. 14, 46); wherein the framework includes at least one shelf 50 for supporting the cells in the compartment; wherein the cells have a width, depth and height and the width is at least twice the depth; wherein the cells are arranged on each shelf in plural groups of upright cells, each group is arranged side-by-side on the shelf, and in each group the cells are arranged in a lateral orientation plural cells deep such that the overall number of cells form a cuboid volume on the shelf. There may be plural, vertically spaced shelves on which each of the cells is arranged; vertical structural side members 52 may extend between the shelves. The shelves may have a fluid flow channel (Fig. 6, 67) running through them; fluid movement devices 62 may be mounted to the sides of the pack to provide fluid flow for cooling. Also disclosed is a TRU comprising the battery pack. [Figure 4]