Modified coulomb counting method of SOC estimation for uninterruptible power supply system's battery management system

2015 ◽  
Author(s):  
S. Sindhuja ◽  
K. Vasanth
Keyword(s):  
Power Supply ◽  
Management System ◽  
Battery Management System ◽  
Battery Management ◽  
Counting Method ◽  
Uninterruptible Power Supply ◽  
Soc Estimation ◽  
Uninterruptible Power

The Design of Marine 24 V DC Uninterruptible Power Supply

2014 ◽  
Vol 536-537 ◽  
pp. 1537-1541
Author(s):  
Juan Xiao
Keyword(s):  
Power Supply ◽  
Short Circuit ◽  
Battery Management ◽  
Single Chip ◽  
Uninterruptible Power Supply ◽  
Management Scheme ◽  
Ac Power ◽  
Actual Use ◽  
Emergency Power ◽  
Uninterruptible Power

A marine DC uninterruptible power supply is designed. The UPS adopts PIC16C73 single-chip microcomputer to realize the battery management. Both AC power and battery power, the output voltage stability in 23 to 24 v.Via advanced battery management, two sections of charging, equalized charging and floating charging can automatic convert and the DCUPS has many functions of protection, such as over-voltage protection ,under voltage protection and short circuit protection.The actual use on the ship and other occasions showed that the DCUPS is convenient and practical,and is more simple, reliable and longer emergency power supply than the traditional AC-DC uninterruptible power supply management scheme.

A Design Methodology for Lithium-Ion Battery Management System and its Application to an Autonomous Underwater Vehicle

2011 ◽  
Vol 383-390 ◽  
pp. 7175-7182 ◽  
Author(s):  
Chao Shen ◽  
Lei Wan
Keyword(s):  
Management System ◽  
Autonomous Underwater Vehicle ◽  
Lithium Ion ◽  
Underwater Vehicle ◽  
Battery Management System ◽  
Battery Management ◽  
Soc Estimation ◽  
Battery Packs ◽  
Non Linear System ◽  
Estimated Error

Battery management system (BMS) in autonomous underwater vehicle (AUV) not only can measure the main parameters of battery packs such as current, voltage, and temperature, but also estimate the state of charge (SOC) of battery packs. This paper proposes a broad approach for the design of battery management system. The new design can improve the cycle life and safety capability. With the model well designed, the parameters required are obtained and the SOC estimation is completed. Extended Kalman filter (EKF) was chosen to make the last estimate with the reliable battery model which was used to the non-linear system to estimate SOC and suitable for AUV applications. The experiments results prove that the data measured by battery management system have high precision and reliability. The estimated error of SOC was also small, which was better than other approaches for estimate.

Research of battery management system for integrated power supply

2017 ◽  
Author(s):  
Aixiang Zhang ◽  
Shizhan Song ◽  
Chuanyong Wang ◽  
Jian Zhang ◽  
Kun Wang ◽  
...  
Keyword(s):  
Power Supply ◽  
Management System ◽  
Battery Management System ◽  
Battery Management

Study on Battery Management System Design of Electric Vehicle and Strategy of the SOC Estimation

2014 ◽  
Vol 945-949 ◽  
pp. 1500-1506
Author(s):  
Zhong An Yu ◽  
Jun Peng Jian
Keyword(s):  
Kalman Filter ◽  
Electric Vehicle ◽  
Digital Signal Processor ◽  
Management System ◽  
Estimation Accuracy ◽  
Space Representation ◽  
Battery Management System ◽  
Battery Management ◽  
Soc Estimation ◽  
Battery Model

In order to improve the efficiency and service life of Lithium batteries for electric vehicle. A structure diagram of battery management system with the digital signal processor as the main controller was designed; in addition, some design modules were expatiated clearly, including the sample circuits of the batterys voltage, current and equalization circuit. The state-space representation of the battery model was established based on Thevenin battery model and extended Kalman filter (EKF) algorithm.According to the estimates and performance characteristics of battery, a new improved-way by amending the Kalman filter gain with the actual situation for raised the SOC estimation accuracy was proposed. The simulation and test results under the condition of simulated driving show that this new way really can increase the SOC accuracy; the equalization scheme can effectively compensate the performance inconsistency of battery pack.

Design on Electric Vehicle Battery Management System with FlexRay Bus

2015 ◽  
Vol 789-790 ◽  
pp. 784-790
Author(s):  
Jian Kun Peng ◽  
Hong Wen He ◽  
Deng Pan
Keyword(s):  
Electric Vehicle ◽  
Management System ◽  
Fault Tolerant ◽  
Estimation Method ◽  
Battery Management System ◽  
Battery Management ◽  
Soc Estimation ◽  
Electric Vehicle Battery ◽  
Bench Experiment ◽  
Li Ion

FlexRay bus is considered as a more promising bus in the future with the performance of real-time, scalable, and fault-tolerant. In this paper we will design an electric vehicle battery management system (BMS) based on FlexRay bus, including the hardware design, the SoC estimation method, FlexRay protocol design and software development. The test bench experiment results show the system design is reasonable and feasible.Keywords- FlexRay, BMS, Li-ion battery,SoC, Design

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