Liquid temperature regulated battery pack for electric vehicles

A method of adding a battery module to a modular low voltage battery pack of a vehicle, the method comprising:

• disconnecting a bus bar from a terminal post of a first battery module secured within a tray of the battery pack;
• uncoupling a coolant conduit from a coolant inlet of the first battery module;
• placing a second battery module into the tray;
• electrically connecting the bus bar to the terminal post of the first battery module and a terminal post of the second battery module;
• and
• coupling the coolant conduit to the coolant inlet of the first battery module and a coolant inlet of the second battery module,
• wherein adding the second battery module to the battery pack increases the energy storage capacity of the battery pack.

A modular low voltage battery pack for a vehicle comprising:

• at least one battery module having a positive terminal post, a coolant inlet, and a coolant outlet;
• circuitry configured to electrically connect the positive terminal post to a low voltage vehicle load;
• a cooling system configured to supply coolant to the at least one battery module at the coolant inlet and receive coolant from the at least one battery module at the coolant outlet, the cooling system comprising at least one conduit;
• and
• a tray secured to and at least partially surrounding the at least one battery module;
• wherein the tray is configured to receive at least one additional battery module to increase the energy storage capacity of the battery pack.