Table 2 The comparison of the literature review.

From: Enhanced SOC estimation of lithium ion batteries with RealTime data using machine learning algorithms

[Refs.]

Main algorithm used

Input parameters

Dataset used

Performance metrics

23

Self-supervised transformer model (Deep learning)

Voltage, current, temperature

LG 18650 cell data from various drive cycles and temps

RMSE, MAE

24

Machine learning (SVM, GPR, Ensemble, NN)

Current, voltage, capacity, temperature

Panasonic 18650PF dataset

Not mentioned

25

GRU

Voltage, current, temperature

Panasonic 18650PF Dataset and Samsung 18650-20R Dataset

MAX, MAE

26

BGRU with TPE optimization

Not mentioned

Custom dataset from battery test bench

RMSE, MAE

27

LSTM + Bayesian optimization

Voltage, current, temperature

LG 18650 HG2 dataset with drive cycles

RMSE, MAE

28

ELM + GSA

Current, voltage, temperature

BJDST, US06 cycles

RMSE, MAE, MSE, MAPE

29

Improved ELM + SSA/SCA-SSA

Current, voltage, temperature

Custom dataset from energy storage device

MAE, MAPE

30

ELM + GSA

Current, voltage, temperature

BJDST, US06 cycles

RMSE, MSE, MAE, MAPE

31

Support vector regression

Not mentioned explicitly

Battery dataset with drive cycles

RMSE, Max error

32

Artificial neural network

Voltage, current, temperature, avg. voltage, avg. current

In-house BMS dataset

MSE, MAE, Max error

Proposed methodology

ANN, SVR and GPN with BO hyperparameter selection

Humidity, atmospheric temperature, battery V, I, T FET and motor temperature

Custom dataset from EV

RMSE, MSE and MAE

  1. Significant values are in bold.