Battery Core Temperature Estimation Using Electro-Thermal Modeling

The patent introduces an electro-thermal model as an intermediary computational system that processes readily available sensor data (voltage, current, ambient temperature) to estimate core temperature. This model acts as a mediator between simple surface measurements and the desired core temperature information, avoiding direct physical intrusion into the battery while achieving accurate temperature estimation through mathematical modeling of heat generation and dissipation processes.

The patent replaces the mechanical/physical measurement system (thermocouples requiring physical installation inside battery cells) with a computational/electrical system. Instead of mechanically inserting temperature sensors into each cell, the system uses electrical measurements (voltage, current) combined with an electro-thermal model to compute core temperature, thereby eliminating the need for complex physical sensor installation while maintaining measurement capability.

The electro-thermal model serves as a computational intermediary that transforms easily obtainable electrical measurements into accurate temperature estimates. This approach mediates between simple voltage/current sensing (easy to implement) and core temperature measurement (difficult to achieve directly), providing a practical solution that maintains precision while dramatically simplifying manufacturing and installation processes.

The system utilizes the battery's own operational data (voltage, current, ambient temperature) to determine its internal temperature state. By leveraging information already generated during normal battery operation, the system achieves core temperature measurement without requiring external sensing infrastructure or complex installation procedures, making the solution self-sufficient and easy to deploy.

The electro-thermal model acts as a computational intermediary that processes simple surface temperature measurements along with electrical operating data to derive accurate core temperature estimates. This model bridges the gap between easily obtainable surface measurements and the harder-to-measure core temperature, maintaining ease of operation while significantly improving measurement precision through mathematical correction of the temperature gradient between surface and core.

The system transforms the temperature measurement problem by changing from direct physical measurement (surface thermocouples) to computational estimation based on multiple parameters. By incorporating voltage, current, ambient temperature, and electro-thermal model parameters, the system converts simple surface data into accurate core temperature information through parameter-based computational transformation rather than direct physical measurement.