SYSTEMS AND METHODS FOR DETERMINING THE TARGET THERMAL CONDITIONING VALUE TO CONTROL A RECHARGEABLE ENERGY STORAGE SYSTEM
First Claim
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1. A method for determining a target thermal conditioning value for a rechargeable energy storage system (RESS) for a vehicle having a coolant pump, the method comprising:
- receiving, at a processor, electrical sensor data indicative of a current and resistance of the RESS;
determining a heat generation value using the electrical sensor data;
receiving, at the processor, pump sensor data indicative of an inlet temperature for the pump, outlet temperature for the pump, speed of the pump, and density of coolant within the pump;
determining a mass flow rate and coolant specific heat using the pump sensor data;
receiving, at the processor, ambient temperature data;
determining a target temperature for the inlet of the pump using timestamp data, the ambient temperature, and a vehicle mode parameter;
receiving, at the processor, temperature sensor data indicative of a measured outlet coolant temperature;
calculating a required thermal power value using the target temperature, mass flow rate, coolant specific heat, and the measured outlet coolant temperature; and
determining a target thermal conditioning value for the RESS using the required thermal power value and the heat generation value.
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Abstract
Systems and methods for determining the target thermal conditioning value to control a rechargeable energy storage system. Target thermal conditioning values are determined using a required thermal power value and a heat generation value in order to appropriately condition the RESS for heating and cooling.
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Citations
19 Claims
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1. A method for determining a target thermal conditioning value for a rechargeable energy storage system (RESS) for a vehicle having a coolant pump, the method comprising:
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receiving, at a processor, electrical sensor data indicative of a current and resistance of the RESS; determining a heat generation value using the electrical sensor data; receiving, at the processor, pump sensor data indicative of an inlet temperature for the pump, outlet temperature for the pump, speed of the pump, and density of coolant within the pump; determining a mass flow rate and coolant specific heat using the pump sensor data; receiving, at the processor, ambient temperature data; determining a target temperature for the inlet of the pump using timestamp data, the ambient temperature, and a vehicle mode parameter; receiving, at the processor, temperature sensor data indicative of a measured outlet coolant temperature; calculating a required thermal power value using the target temperature, mass flow rate, coolant specific heat, and the measured outlet coolant temperature; and determining a target thermal conditioning value for the RESS using the required thermal power value and the heat generation value. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for determining a target thermal conditioning value for a rechargeable energy storage system (RESS) for a vehicle having a coolant pump, the system comprising:
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an interface configured to receive electrical sensor data from a current sensor and a resistance sensor connected to the RESS; a heat generation calculator configured to calculate a heat generation value using a power-based strategy on the electrical sensor data; an interface configured to receive pump sensor data from an inlet temperature for the pump, outlet temperature for the pump, speed of the pump, and density of coolant within the pump; a coolant-based engine configured to determine a mass flow rate and coolant specific heat using the pump sensor data; an interface configured to receive ambient temperature data from an external sensor to the RESS; a temperature-based device configured to determine a target temperature for the inlet of the pump using a temperature-based strategy on the external sensor data; an interface configured to receive a measured outlet coolant temperature from a temperature sensor; a thermal power evaluator configured to calculate the required thermal power value using the target temperature, the mass flow rate, the coolant specific heat, and the measured outlet coolant temperature; and a target thermal conditioning evaluator configured to determine a target thermal conditioning value from the required thermal power value and the heat generation value. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A system for controlling a rechargeable energy storage system (RESS) for a vehicle having a coolant pump using a target thermal conditioning value, the system comprising:
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a current sensor configured to measure a current of the RESS; a resistance sensor configured to measure a resistance of the RESS; a pump sensor configured to measure an inlet temperature for the pump, outlet temperature for the pump, speed of the pump, and density of coolant within the pump; an external sensor to the RESS configured to measure ambient temperature data, timestamp data, and a vehicle mode parameter; a temperature sensor configured to measure an outlet coolant temperature; and a processor coupled to a memory and configured to; receive electrical sensor data indicative of a current and resistance of the RESS; determine a heat generation value using the electrical sensor data; receive pump sensor data indicative of an inlet temperature for the pump, outlet temperature for the pump, speed of the pump, and density of coolant within the pump; determine a mass flow rate and coolant specific heat using the pump sensor data; receive ambient temperature data; determine a target temperature for the inlet of the pump using the ambient temperature, timestamp data, and a vehicle mode parameter; receive temperature sensor data indicative of the measured outlet coolant temperature; calculate a required thermal power value using the target temperature, mass flow rate, coolant specific heat, and the measured outlet coolant temperature; determining a target thermal conditioning value for the RESS based on the required thermal power value and the heat generation value; and controlling the RESS using the target thermal conditioning value. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification