Thermal management of vehicle energy storage means

A control system for controlling operation of a thermal control apparatus, the thermal control apparatus configured for thermal control of an energy storage means of a vehicle, the control system comprising one or more controllers, the control system configured to:

• obtain a parameter indicative of a state of health of the energy storage means;
• select a variable value temperature setpoint function in dependence on a difference between the parameter and a target, the variable value temperature setpoint function selected from the group consisting of:
• a triple setpoint, a linear interpolation, a nonlinear interpolation, and a polynomial function;
• and
• control operation of the thermal control apparatus in accordance with the variable value temperature setpoint function,
• wherein the target is indicative of expected state of health,
• wherein a rate of change of the target varies in association with cumulative energy throughput of the energy storage means,
• wherein the rate of change of the target is a rate of reduction of the target, and
• wherein the rate of reduction of the target decreases as cumulative energy throughput of the energy storage means increases.