Research on energy management strategy for a hybrid power system of ship's aluminum-air battery and lithium-ion battery

doi:10.19799/j.cnki.2095-4239.2023.0343

Abstract

Abstract:

The aluminum-air battery and lithium-ion battery are formed into a hybrid power system, and the advantages and disadvantages of different topologies are analyzed to determine the topology of the hybrid power system. The principle of the aluminum-air battery hybrid power system was designed, the selection parameters of the key components of the system were determined, and the test platform of the hybrid power system was made. A rule-based control energy management strategy was proposed to improve the efficiency and lifetime of aluminum-air batteries. The strategy primarily considers the state of charge (SOC) of lithium-ion battery and load power variation so that the aluminum-air battery discharges at constant power in the high-power range and the Li-ion battery operates at variable power. The effectiveness of the strategy is verified through experimental testing.

Key words: aluminum air battery, hybrid power system, energy management strategy, rule control

CLC Number:

U 674.925

Huabang ZHANG, Yue CHEN, Qin LI, Hongqiang WANG, Guofeng QIN, Qiang WU, Qingyu LI. Research on energy management strategy for a hybrid power system of ship's aluminum-air battery and lithium-ion battery[J]. Energy Storage Science and Technology, 2023, 12(9): 2871-2880.

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名称	参数
额定功率	1000 W
工作电压	36～65 V
极片数量	108片
额定电量	72 kWh
反应面积	13 cm×22 cm

名称	参数
额定电压	51.2 V
工作电压	43.2～57.6 V
额定容量	175 Ah
最大充/放电电流	150 A
放电深度	90%
循环寿命	≥4000圈
通信方式	CAN

名称	具体型号及参数
型号	BPDC1002D
额定功率	2 kW
输入电压	36～70 V
输出电压	36～60 V
输出电流	50 A
效率	≥93%
通信方式	RS485

名称	具体型号及参数
型号	750V300A300KW2CH
额定功率	300 kW
电压输出范围	30～750 V
电流输出范围	-300～300 A
效率	>93%
通信方式	RS485

状态	锂离子电池SOC/%	需求功率	铝空气电池功率	锂离子电池功率
1	<20	P_L≤P_Al	P_Al	-(P_Al-P_L)
2	<20	P_Al<P_L	P_Al	0
3	20～80	P_L≤P_Al	P_Al	-(P_Al-P_L)
4		P_Al<P_L≤P_B	0	P_L
5		P_B<P_L<P_Al+P_B	P_Al	P_L-P_Al
6		P_Al+P_B≤P_L	P_Al	P_B
7	>80	P_L≤P_B	0	P_L
8		P_B<P_L<P_Al+P_B	P_Al	P_L-P_Al
9		P_Al+P_B≤P_L	P_Al	P_B