Systems and methods for managing multiple vehicle cabin heat sources and multiple controllers
AssigneePhoenix Motor, Inc.
InventorsJames Harper, Kevin Rodden, Scott Hall
Life of this patent
Estimating the term…
Abstract
Systems and methods of controlling temperature in a cabin of an electric vehicle that has an HVAC system powered by a battery system and an auxiliary heating system. Upon determining, by a system controller, that a setpoint temperature is less than or equal to a sensed cabin temperature while operating in an HVAC electric heat state, an auxiliary heat state, or a maximum heat state, automatically transitioning to an off state from the HVAC electric heat state, the auxiliary heat state, or the maximum heat state.
Claims18
An electric vehicle, comprising:
- a body enclosing a cabin;
- a temperature management system comprising an HVAC system powered by a battery system of the electric vehicle and an auxiliary heating system, wherein a temperature in the cabin is regulated by the temperature management system;
- and
- a controller configured to:
- determine if a setpoint temperature is less than or equal to a sensed cabin temperature while operating (i) the HVAC system in an HVAC electric heat state, (ii) the auxiliary heating system in an auxiliary heat state, or (iii) a maximum heat state;
- if the setpoint temperature is less than or equal to the sensed cabin temperature, then automatically transitioning to an off state from the HVAC electric heat state, the auxiliary heat state, or the maximum heat state;
- determine that one or more temperature anomalies are present or trending to be present in the cabin;
- and
- based on the determined one or more temperature anomalies, recommend or perform one or more corrective actions, the one or more corrective actions comprising generating and transmitting an operational signal to the auxiliary heating system so as to manage operations of one or more radiators, pass-thrus, a water heater, one or more expansion tanks, one or more coolant pumps, and/or defroster,
- wherein determining one or more temperature anomalies using a trend model for early detection of temperature anomalies before temperature conditions occur thereby increasing vehicle efficiency, the trend model having been trained using a learned set of heating operation parameters of the temperature management system to predict one or more temperature parameters associated with the one more temperature anomalies.
A method of controlling temperature in a cabin of an electric vehicle with a temperature management system, the electric vehicle comprising an HVAC system powered by a battery system of the electric vehicle and an auxiliary heater, the method comprising:
- upon determining, by a system controller of the temperature management system, that a setpoint temperature is less than or equal to a sensed cabin temperature while operating in (i) an HVAC electric heat state, (ii) an auxiliary heat state, or (iii) a maximum heat state, automatically transitioning to an off state from the (i) HVAC electric heat state, (ii) the auxiliary heat state, or (iii) the maximum heat state;
- determine an ambient temperature;
- upon determining that the sensed cabin temperature is less than the setpoint temperature, determine whether an HVAC and/or auxiliary heat ambient temperature cutoff is greater than the ambient temperature;
- and
- upon determining that the HVAC and/or auxiliary heat ambient temperature cutoff is greater than the ambient temperature, transition to the HVAC electric state for a duration of a heat timer.
A temperature management system for an electric vehicle, comprising:
- an HVAC system powered by a battery system of the electric vehicle;
- an auxiliary heating system;
- wherein the HVAC system and the auxiliary heating system are configured to condition air within a cabin of the electric vehicle;
- and
- a control unit configured to:
- determine if a setpoint temperature is less than or equal to a sensed cabin temperature while operating (i) the HVAC system in an HVAC electric heat state, (ii) the auxiliary heating system in an auxiliary heat state, or (iii) a maximum heat state;
- upon determining that the setpoint temperature is less than or equal to the sensed cabin temperature, transitioning to an off state from the HVAC electric heat state, the auxiliary heat state, or the maximum heat state;
- determine an ambient temperature;
- upon determining that the sensed cabin temperature is less than the setpoint temperature, determine whether an HVAC and/or auxiliary heat ambient temperature cutoff is greater than the ambient temperature;
- and
- upon determining that the HVAC and/or auxiliary heat ambient temperature cutoff is greater than the ambient temperature, transition to the HVAC electric state for a duration of a heat timer.
Dependencies are inferred from the claim text.