Mechanically fastened through-wall current collector

[0027] refer to Figure 1 to Figure 3 A battery 1 for providing electrical power comprises electrochemical cells 20 which are electrically interconnected and stored in an organized manner within a battery housing 2 . The battery pack case 2 includes a pack container portion 3 and a detachable pack cover 4 . The battery cell 20 is a lithium ion pouch battery cell, which includes an electrode assembly 60 ( image 3 and Figure 4 ), the electrode assembly 60 is sealed together with the electrolyte in the battery cell case 21 to form a power generation and storage unit. In some embodiments, several sets of battery cells 20 may be bundled together to form a battery module (not shown), which is then stored within the battery pack housing 2 . However, in the illustrated embodiment, the battery cells 20 are not bundled into modules, and are instead directly electrically connected to the battery pack case terminals 6 , 7 . Inside the pack case 2, the battery cells 20 are electrical...