Pressure control of battery cells

A method of controlling a pressure of a battery cell, comprising:

• receiving an expansion force at a pressure plate disposed at an initial position relative to the battery cell, the battery cell disposed in a housing, the initial position including a first orientation, the expansion force resulting from expansion of the battery cell, the pressure plate coupled to a tilting assembly configured to allow the pressure plate to change from a first orientation to a second orientation based on the expansion force being non-uniform;
• and
• managing a pressure of the battery cell by a pressure management system including a mechanical linkage attached to the pressure plate and a biasing system, wherein managing the pressure includes:
• translating the expansion force to a reactive force based on a lateral movement of the mechanical linkage, the reactive force configured to oppose the expansion force;
• controlling the reactive force based on resisting the lateral movement of the mechanical linkage by a biasing member of the biasing system, the biasing system applying a biasing force in a direction opposite a direction of the lateral movement, the biasing force causing the mechanical linkage to apply the reactive force as a selected proportion of the expansion force;
• and
• based on the expansion force being non-uniform, adjusting the biasing force and the reactive force to balance an internal pressure of the battery cell.

A vehicle system comprising:

• a battery system connected to an electric motor of a vehicle, the battery system including a battery cell disposed in a housing;
• and
• a pressure management system including:
• a pressure plate disposed at an initial position relative to the battery cell, the battery cell disposed in a housing, the initial position including a first orientation, wherein expansion of the battery cell causes an expansion force to be applied to the pressure plate;
• a tilting assembly configured to allow the pressure plate to change from the first orientation to a second orientation based on the expansion force being non-uniform;
• a mechanical linkage attached to the pressure plate, the mechanical linkage configured to move laterally in response to the expansion force and translate the expansion force to a reactive force that is opposed to the expansion force;
• and
• a biasing system including a biasing member configured to resist a lateral movement of the mechanical linkage, the biasing system configured to apply a biasing force in a direction opposite a direction of the lateral movement, the biasing force causing the mechanical linkage to apply the reactive force as a selected proportion of the expansion force, wherein:
• based on the expansion force being non-uniform, the biasing system is controllable to change the biasing force and the reactive force to balance an internal pressure of the battery cell.