A state of charge estimation method includes: measuring a voltage of a lithium ion secondary battery that is being charged at a predetermined current rate higher than or equal to a predetermined charging rate; obtaining a rate of increase in the measured voltage; and estimating a state of ...
An overview of new and current developments in state of charge (SOC) estimating methods for battery is given where the focus lies upon mathematical principles and practical implementations. As the battery SOC is an important parameter, which reflects the battery performance, so accurate estimation of...
the open-circuit voltage method is always together with other methods at the initial or final stage of charge, and rarely used alone such as the SOC estimation method combining the open-circuit voltage method with the ampere-hour integral method, and the SOC estimation method combining the open-...
In the disclosed state-of-charge estimation method, state-of-charge estimation device, and secondary-battery power system, initial values for voltage-characteristic adjustment parameters, which can approximate with high precision the change over time of the open-circuit voltage of a secondary battery,...
A SOC (state of charge) estimation method for a rechargeable battery includes: measuring a battery parameter of the rechargeable battery; judging whether the battery parameter of the rechargeable battery is stable; if the battery parameter of the rechargeable battery is not stable yet, estimating an...
In order to reduce the equalization energy consumption with voltage equalization, we proposes the EMBL algorithm.The output of the LEM is more accurate and stable than the second-order RC model.The EMBL based SOC equalization can slightly reduce energy consumption compared to the EKF algorithm.关键...
The control strategy of electric vehicles mainly depends on the power battery state-of-charge estimation. One of the most important issues is the power lithium-ion battery state-of-charge (SOC) estimation. Compare with the extended Kalman filter algorithm, this paper proposed a novel adaptive squa...
State of charge (SOC)estimationconstitutes a critical task of battery management systems. Conventional SOC estimation methods designed for dynamic profiles have difficulties in estimating SOC for LiFePO4 batteries due to their flat opencircuitvoltage characteristics in the middle range of SOC. In this st...
Provided are a battery state-of-charge (SOC) estimation method and a battery management system which are capable of estimating an SOC using an inexpensive processor and a small-capacity memory. The SOC estimation method includes an SOC table creation step, an SOC calculation step, an SOC compari...
State-of-charge estimation method and battery control unit Accurate estimation of the state of charge (SOC) is essential to ensure the safe and efficient utilization of lithium-ion batteries. However, external fact... C Wu 被引量: 0发表: 2014年 ...