Real-time estimation of cell core temperature during period of rest
First Claim
1. A method for estimating the core temperature of at least one cell in a battery at the termination of a rest period, the method comprising:
- measuring the surface temperature of the at least one cell at the initiation of the rest period and at the termination of the rest period;
obtaining the estimated core temperature of the at least one cell at the initiation of the rest period;
obtaining the time required for the surface temperature of the at least one cell at the initiation of the rest period and the estimated core temperature of the at least one cell at the initiation of the rest period to converge;
measuring the time from the initiation of the rest period to the termination of the rest period; and
estimating the core temperature of the at least one cell at termination of the rest period based on the measured surface temperatures of the at least one cell at the initiation of the rest period and at the termination of the rest period, the obtained estimated core temperature, the obtained time, and the measured time, wherein the core temperature of the at least one cell at the termination of the rest period is estimated independent of a battery cooling system and/or thermal system.
3 Assignments
0 Petitions
Accused Products
Abstract
Methods and systems for estimating the core temperature of at least one cell in a battery at the termination of a rest period. The method for estimating the core temperature of the cells in a battery includes measuring the surface temperature of the cells, obtaining the estimated core temperature of the cells, obtaining the time required for the surface temperature and the estimated core temperature of the cells to converge, and estimating the core temperature of the cells based on the measured surface temperatures, the obtained estimated core temperature, and the obtained time. The system for estimating the core temperature of the cells in a battery includes at least one sensor configured to receive temperature information and a control system in signal communication with the sensor, wherein the control system comprises a memory device and a controller.
-
Citations
18 Claims
-
1. A method for estimating the core temperature of at least one cell in a battery at the termination of a rest period, the method comprising:
-
measuring the surface temperature of the at least one cell at the initiation of the rest period and at the termination of the rest period; obtaining the estimated core temperature of the at least one cell at the initiation of the rest period; obtaining the time required for the surface temperature of the at least one cell at the initiation of the rest period and the estimated core temperature of the at least one cell at the initiation of the rest period to converge; measuring the time from the initiation of the rest period to the termination of the rest period; and estimating the core temperature of the at least one cell at termination of the rest period based on the measured surface temperatures of the at least one cell at the initiation of the rest period and at the termination of the rest period, the obtained estimated core temperature, the obtained time, and the measured time, wherein the core temperature of the at least one cell at the termination of the rest period is estimated independent of a battery cooling system and/or thermal system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A system for estimating the core temperature of at least one cell in a battery in a vehicle at the termination of a rest period, wherein the vehicle receives at least a portion of its power from the battery, the system comprising:
-
at least one sensor configured to receive temperature information from the battery; and a control system in signal communication with the sensor, wherein the control system comprises a memory device and a controller in signal communication with the memory device with instructions for estimating the core temperature of at least one cell in the battery at the termination of the rest period, the instructions being written to; measure the surface temperature of the at least one cell at the initiation of the rest period and at the termination of the rest period; obtain the estimated core temperature of the at least one cell at the initiation of the rest period; obtain the time required for the surface temperature of the at least one cell at the initiation of the rest period and the estimated core temperature of the at least one cell at the initiation of the rest period to converge; measure the time from the initiation of the rest period to the termination of the rest period; and estimate the core temperature of the at least one cell at termination of the rest period based on the measured surface temperatures of the at least one cell at the initiation of the rest period and at the termination of the rest period, the obtained estimated core temperature, the obtained time, and the measured time, wherein the core temperature of the at least one cell at the termination of the rest period is estimated independent of a battery cooling system and/or thermal system. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification