Prediction of internal temperature of a battery using a non-linear dynamic model
First Claim
Patent Images
1. A method of determining the internal temperature of a battery, said method comprising the steps of:
- determining an air temperature around the battery;
determining a function of heat convection that affects the temperature of the battery;
determining a function of heat conduction that affects the temperature of the battery;
determining a function of heat radiation that affects the temperature of the battery; and
determining the temperature of the battery based on a heat contribution from each of the functions of heat convection, heat conduction, and heat radiation.
19 Assignments
0 Petitions
Accused Products
Abstract
A method of determining a vehicle battery temperature by a non-linear dynamic model based on the physical concepts of thermal transfer and a system identification technique. The battery temperature model uses several available physical measurements from the vehicle, including the engine coolant temperature, surrounding air temperature, vehicle speed and the engine fan on/off state. This method also includes the estimation of an initial value of battery temperature before starting the iteration process by the battery temperature prediction from the dynamic model.
62 Citations
27 Claims
-
1. A method of determining the internal temperature of a battery, said method comprising the steps of:
-
determining an air temperature around the battery; determining a function of heat convection that affects the temperature of the battery; determining a function of heat conduction that affects the temperature of the battery; determining a function of heat radiation that affects the temperature of the battery; and determining the temperature of the battery based on a heat contribution from each of the functions of heat convection, heat conduction, and heat radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method of determining the internal temperature of a vehicle battery associated with an internal combustion engine of a vehicle, said method including solving a dynamic battery temperature model, said method comprising the steps of:
-
determining an air temperature around the battery; determining a temperature of an engine coolant fluid; determining a wind speed variable; determining a first term of the battery temperature model, said step of determining the first term including determining the first term based on the wind speed variable, a previous battery temperature, and the air temperature around the battery; determining a second term of the battery temperature model, said step of determining the second term including determining the second term based on the wind speed variable, the coolant fluid temperature, and the air temperature around the battery; determining a third term of the battery temperature model, said step of determining the third term including determining the third term based on the wind speed variable and the engine coolant temperature; and determining a fourth term of the battery temperature model, said step of determining the fourth term including determining the fourth term based on the wind speed variable and the previous battery temperature. - View Dependent Claims (15, 16, 17, 18)
-
-
19. A method of determining the internal temperature of a battery by developing a non-linear battery temperature dynamic model, said method comprising the steps of:
-
determining physical concepts of thermal transfer, said step of determining physical concepts including determining an engine coolant temperature, a surrounding air temperature, a vehicle speed, and an engine fan on/off state; determining model parameters of a system incorporating the battery using a system identification technique; and determining a battery temperature estimation using the engine coolant temperature, the surrounding air temperature, the vehicle speed and the engine fan on/off state. - View Dependent Claims (20, 21)
-
-
22. A system for determining the internal temperature of a battery, said system comprising:
-
a temperature sensor for providing a temperature measurement of the air around the battery; a heat convection system for determining a function of heat convection that affects the temperature of the battery; a heat conduction system for determining a function of heat conduction that affects the temperature of the battery; a heat radiation system for determining a function of heat radiation that affects the temperature of the battery; and a processor for determining the temperature of the battery based on a heat contribution from each of the functions of heat convection, heat conduction and heat radiation. - View Dependent Claims (23, 24, 25, 26, 27)
-
Specification