Influence of the energy management strategy on the thermal management system performance of fuel cell bus

doi:10.3969/j.issn.1674-8484.2022.03.014

Abstract

Abstract:

An optimization scheme was proposed based on two typical energy management strategies to investigate the influence of two typical energy management strategies on the performances of vehicle thermal management system. A thermal management system model was established taking fuel cell bus as the research object and based on Matlab/Simulink software. Numerical simulations were carried out in driving cycle conditions based on the thermostat and the power-follower mode control strategy. The results show that the control strategy based on thermostat mode makes the fuel cell power change and other heat source components more stable under the condition of ambient temperature of 40 ℃ and full load of 13.5 t, compared with the control strategy based on power-follower mode. The overall maximum heat production rate of the thermal management system decreased by 33.41%, and the heat production decreased by 13.56%. The heat production of the thermal management system based on the switch-mode control strategy is decreased by 10% under the extreme conditions of room temperature, ambient temperature of 40 ℃, and different vehicle loading masses.

Key words: fuel cell bus, thermal management system, energy management strategy, numerical simulation

CLC Number:

U469.7

SONG Bo, SUN Kai, CHE Zhizhao, CHEN Rui, LIU Huaiyu, REN Meilin, WANG Tianyou. Influence of the energy management strategy on the thermal management system performance of fuel cell bus[J]. Journal of Automotive Safety and Energy, 2022, 13(3): 526-534.

Figures/Tables 19

References 14

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车型尺寸	8.645 m×2.500 m×3.400 m
m_v（整备）	8.9 t
m_v（满载）	13.5 t
f	0.012
C_D	0.65
A_V	8.13 m²
δ	1.16
λ	≤20 %

车型尺寸	8.645 m×2.500 m×3.400 m
m_v（整备）	8.9 t
m_v（满载）	13.5 t
f	0.012
C_D	0.65
A_V	8.13 m²
δ	1.16
λ	≤20 %

额定输出功率	40.5 kW
最大净输出功率	46 kW
可工作温度范围	-30~85 ℃
外形尺寸	0.848 m×0.645 m×0.665 m
电堆质量	155 kg
输出电压范围	82~180 V

额定输出功率	40.5 kW
最大净输出功率	46 kW
可工作温度范围	-30~85 ℃
外形尺寸	0.848 m×0.645 m×0.665 m
电堆质量	155 kg
输出电压范围	82~180 V

电池组标称电压	521.6 V
电池组额定输出电流	173 A
标称容量	173 Ah
储电量	90.2 kWh
充放电工作温度范围	-35~50 ℃
SOC工作范围	20%~100%