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At present, the common lithium-ion battery equalization methods can be divided into two categories: passive equalization and active equalization. Passive equalization is the earliest and most widely used method.
In pursuit of low-carbon life, renewable energy is widely used, accelerating the development of lithium-ion batteries. Battery equalization is a crucial technology for lithium-ion batteries, and a simple and reliable voltage-equalization control strategy is widely used because the battery terminal voltage is very easy to obtain.
Due to production and manufacturing differences, the consistency of many lithium-ion batteries used in series and parallel will deteriorate, so battery equalization techniques are needed to maximize the available battery capacity and ensure safe battery pack operation [1–3].
The equalization methods of lithium-ion batteries can be divided into active methods and passive methods. Passive methods use resistors connected in parallel with the batteries to dissipate excess electricity to balance the battery pack [ 13 ].
To begin with, the active battery-equalization scheme of topology structure and balanced principle are introduced. Then the segmented hybrid equalization control strategy based on voltage and state of charge (SOC) is proposed on the basis of the topology. Finally, the battery equalization topology based on MATLAB/Simulink are established.
To better quantify the equalization effect, the battery difference and energy utilization rate are defined for evaluation. In order to address the inconsistency problem of series-connected lithium-ion battery groups in practice, a two-level balanced topology based on bidirectional Sepic-Zeta circuit is designed in this article.
The battery pack is at the heart of electric vehicles, and lithium-ion cells are preferred because of their high power density, long life, high energy density, and viability for …
In addition, the module-to-module equalization ensures high balancing speed. The equalization time is relatively short and constant in any location of high- and low-voltage …
In this paper, the battery pack means the whole battery system, a battery group is a group of n battery cells, and the working part of a battery group consists n or n − 1 battery cells depending on the phase of equalization. …
The energy balance between individual lithium-ion batteries in electric vehicles is an important factor that affects the efficiency and long-time operation of the entire system.
With the state of charge (SOC) of the battery as the equalization variable, and the equalization control strategy is designed based on the consistency controller and PI …
A battery-equalization scheme is proposed to improve the inconsistency of series-connected lithium iron phosphate batteries. Considering battery characteristics, the segmented …
In this paper, we propose a high-performance equalization control strategy based on the equalization data of the general equalization strategy, which turns on the …
Battery equalization voltages for lithium ion battery packs should be between 1.8 and 3 volts per cell in order to maintain performance. There are several equalizers on the market for different battery types, they are: Vicron …
A STUDY OF THE EFFECTS OF CYCLING FREQUENCY ON LITHIUM-ION AND LITHIUM-POLYMER BATTERIES'' DEGRADATION _____ A Thesis Presented to The Faculty of the Graduate School at the University of Missouri …
In this paper, we propose a high-performance equalization control strategy based on the equalization data of the general equalization strategy, which turns on the equalization again after...
As an important part of battery management, battery energy equalization technology makes the energy in the battery pack flow between single batteries by building an …
In this paper, the performance analysis of the modularized global equalizer system for Lithium-ion battery cell equalization is conducted analytically. Specifically, a …
To begin with, the active battery-equalization scheme of topology structure and balanced principle are introduced. Then the segmented hybrid equalization control strategy …
Aiming at the energy inconsistency of each battery during the use of lithium-ion batteries (LIBs), a bidirectional active equalization topology of lithium battery packs based on …
In this paper, the battery pack means the whole battery system, a battery group is a group of n battery cells, and the working part of a battery group consists n or n − 1 battery …
To begin with, the active battery-equalization scheme of topology structure and balanced principle are introduced. Then the segmented hybrid equalization control strategy …
Battery balancing is the key issue as well as where the difficulty lies to the BMS. The main idea of battery balancing is to use the power electronic converter to transfer or consume the energy of …
In this paper, the performance analysis of the modularized global equalizer system for Lithium-ion battery cell equalization is conducted analytically. Specifically, a …
Lithium-ion batteries are commonly applied to electric vehicles and energy storage technologies owing to their high energy density, low self-discharge rate, no memory …
In this paper, a double-tiered modular equalization strategy based on the three-resonant-state LC converters is proposed to solve the issue of low equalization efficiency and …
In this paper, a double-tiered modular equalization strategy based on the three-resonant-state LC converters is proposed to solve the issue of low equalization efficiency and …
At present, the main application of battery equalization technology to solve the energy inconsistency problem that occurs during the operation of lithium batteries [9]. The main part of …
In this paper, we propose a high-performance equalization control strategy based on the equalization data of the general equalization strategy, which turns on the …
The Equalization simulation model includes the battery module, double-layer selector switch, non-isolated Cuk equalizer, switch control module, and current control module …
Lithium-ion battery (LIB) is the most popular ESS in EVs because of the merits of high energy/power ... Therefore, battery equalization, which can enhance the pack safety and …