Battery assembly processes
A manufacturing process flow and accompanying methods for assembling a battery module are designed to increase efficiency, reduce a footprint of the manufacturing process, reduce manufacturing time, allow for increased flexibility, and reduce costs. The process flow takes advantage of robotic functionality to combine multiple manufacturing and quality assurance operations.
1. A battery module comprising:
a module shell comprising a first opening for receiving a first plurality of battery cells and a second opening opposite the first opening for receiving a second plurality of battery cells, wherein the module shell further comprises an inner surface comprising a bottom battery cell retainer plate comprising a plurality of openings to at least partially receive the first and second plurality of battery cells;
a circuit board and a copper bar inserted into respective receiving slots in proximity to an outer edge of module shell; and
one or more passageways extending entirely through an outer edge of the module shell from the first opening to the second opening, the one or more passageways configured to allow for wiring to pass through the battery module; and
a first flex circuit coupled to a first top battery cell retainer plate, both of which coupled to the module shell across the first opening;
a first cover coupled to the module shell to seal the first opening, the cover comprising one or more first ports aligned with the passageways;
a second flex circuit coupled to a second top battery cell retainer plate, both of which coupled to the module shell across the second opening; and
a second cover couple to the module shell to seal the second opening, the cover comprising one or more second ports aligned with the passageways;
wherein the first flex circuit comprises a first plurality of clearance holes that aligns with a plurality of studs of the top battery cell retainer plate.
2. The battery module of claim 1 , further comprising: one or more O-rings placed onto each of the first ports and second ports.
3. The battery module of claim 1 , wherein the first plurality of battery cells and the second plurality of battery cells are arranged in rows.
4. The battery module of claim 3 , wherein each of the first and second plurality of battery cells comprises a mounting end and an electrical connection end, the mounting end configured to receive an adhesive when the battery module is assembled.
5. The battery module of claim 4 , wherein the mounting end of each of the first and second plurality of battery cells is configured to receive an adhesive compatible with a submerged fluid.
6. The battery module of claim 4 , wherein the electrical connection end comprises a center electrode and an outer rim electrode, each coupled to a flex circuit to complete an electric circuit.
7. The battery module of claim 1 , wherein end of each of the first and second plurality of battery cells has a cylindrical shape with a radius of no more than 21.05 mm.
8. The battery module of claim 1 , wherein the circuit board is configured to monitor a current draw of the battery module, condition of the first and second plurality of battery cells, and communication between the battery module and another battery module.
9. The battery module of claim 1 , wherein the copper bar connects a first side of the battery module to a second side of the battery module, combining voltages from the first side and second side into one voltage.
10. The battery module of claim 1 , wherein the bottom battery cell retainer comprises a plurality of coolant holes configured to allow a coolant to follow through the module shell and around the first and second plurality of battery cells.