TY - JOUR
T1 - Design of active equalizer for lithium-ion battery pack based on double-tiered modular resonance
AU - Sun, Xiujuan
AU - Zhu, Lingzhen
AU - Zhang, Pengfei
AU - Lin, Mengchang
N1 - Funding Information:
This work was supported by the Qingdao scientific and technological innovation high-level talents project – Aluminum-ion power and energy storage battery [grant number 17-2-1-1-zhc]; Taishan Scholar Project of Shandong Province of China [grant number tsqn20161025]; Qingdao entrepreneurial innovation leaders plan [grant number 16-8-3-1-zhc]; Shandong University of Science and Technology 2018 postgraduate science and technology innovation project [grant number SDKDYC180360].
Publisher Copyright:
© 2018 The Author(s).
PY - 2018/9/21
Y1 - 2018/9/21
N2 - 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. In the conventional modular switched capacitor method, small pressure difference between the batteries at the end of the equalization and the need for multi-stage transmission may cause the low efficiency of the equalization, slow speed and so on. To solve the issues, the control method of three-resonant-state LC converters is adopted in this paper. The resonance process not only improves the transferable energy of the capacitor, but also realizes the zero-current switching of the circuit, reducing the circuit switching loss and electromagnetic interference. A double-tiered modular resonance equalization structure is also proposed to provide more energy transfer paths and larger equilibrium current. By means of this, the inconsistency between the cells can be eliminated more quickly and efficiently when energy needs to be transferred in multiple stages. Comparative experiment is conducted by constructing a simulation platform and an experimental platform to demonstrate the superiority of the double-tiered resonance equalization.
AB - 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. In the conventional modular switched capacitor method, small pressure difference between the batteries at the end of the equalization and the need for multi-stage transmission may cause the low efficiency of the equalization, slow speed and so on. To solve the issues, the control method of three-resonant-state LC converters is adopted in this paper. The resonance process not only improves the transferable energy of the capacitor, but also realizes the zero-current switching of the circuit, reducing the circuit switching loss and electromagnetic interference. A double-tiered modular resonance equalization structure is also proposed to provide more energy transfer paths and larger equilibrium current. By means of this, the inconsistency between the cells can be eliminated more quickly and efficiently when energy needs to be transferred in multiple stages. Comparative experiment is conducted by constructing a simulation platform and an experimental platform to demonstrate the superiority of the double-tiered resonance equalization.
KW - Double-tiered modularity
KW - Energy balance three-resonant-state LC converters
KW - Equalization speed and efficiency
KW - Lithium-ion batteries
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U2 - 10.1080/21642583.2018.1558418
DO - 10.1080/21642583.2018.1558418
M3 - Article
AN - SCOPUS:85062590986
SN - 2164-2583
VL - 6
SP - 314
EP - 323
JO - Systems Science and Control Engineering
JF - Systems Science and Control Engineering
IS - 3
ER -
