Rivian IP Holdings, LLC

Jorge Rodriguez

Nathaniel C Wynn

Kyle William Butterfield

Tyler David Collins

Kyle Butterfield

Justin Rodenburg

Systems and methods are described herein for reducing electromagnetic interference (EMI) affecting measurements of a battery module monitoring board. A battery module system includes battery cells on a top side and a bottom side of the battery module. Each battery cell is electrically coupled between an adjacent pair of busbars. Each busbar is coupled to at least one sensor wire. One busbar, which spans the top and bottom sides of the battery module, is coupled to two sensor wires such that EMI interference affecting measurement signals (e.g., noise signals accompanying voltage readings) associated with the top side of the battery module are in-phase with one another and the measurement signals associated with the bottom side of the battery module are in-phase with one another, such that the EMI interference generally cancels in measurement calculations.

Battery module monitoring board EMI reduction

A battery system of a vehicle may include a main battery pack, a secondary battery pack, and one or more secondary contactors. The main battery pack is integrated into the vehicle and includes a first plurality of battery cells, a first DC bus coupled to the first plurality of battery cells, and main contactors coupled to the first DC bus to form a switched DC bus. The secondary battery pack includes a second plurality of battery cells, and a second DC bus coupled to the second plurality of battery cells. The second DC bus of the secondary battery pack is electrically coupled to the switched DC bus of the main battery pack via the secondary contactors. In some embodiments, the main battery pack includes control circuitry configured to communicate with control circuitry of the secondary battery pack to manage or monitor coupling of the battery packs.

Auxiliary energy system architecture

An interconnect is disclosed that opens a battery circuit when an access cover is removed. The interconnect includes a single installed position, and does not include any throw positions to avoid ambiguity. The interconnect includes a conductive element that closes the battery circuit when the interconnect is installed. The access cover cannot be removed when the interconnect is installed, because the interconnect includes at least one mechanical feature that prevents removal of the access cover. In some instances, the interconnect is integrated into the access cover, such that when the cover is removed, the circuit is opened necessarily during removal. The interconnect interface may include blades, pins, or other electrically conducting elements. The interconnect is arranged in the battery system away from power electronics and other components that may interface to an electrical load, thus providing an added measure of safety when the access cover is off.

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Ladera Ranch, CA, United States of America

Jorge Rodriguez