大功率型氢燃料电池重卡动力系统匹配设计

doi:10.19562/j.chinasae.qcgc.2021.02.006

Abstract

Abstract:

In order to solve the problem that there is no existing mature control strategy for the power system design of high power hydrogen fuel cell heavy?duty truck， the control strategy with priority of high power hydrogen fuel cell protection in power system matching design is proposed. According to the strategy， the design process， parts selection， parameter matching and calculation are determined. On this basis， the configuration optimization of the power system is carried out， and the fuel cell type selection is carried out based on the steady state conditions. Meanwhile， taking into consideration of the actual working condition characteristics and efficiency characteristics of heavy?duty trucks， the hydrogen fuel cell power， power cell power， motor power and speed ratios are designed and the parameters of parts are determined. Based on the design results， a high power hydrogen fuel cell heavy?duty truck model is established in Cruise for analysis and optimization. According to the design and optimization results， the prototype vehicle is designed and manufactured， and the overall performance parameters are preliminary verified. This study provides a reference for the matching design of power system of high power hydrogen fuel cell heavy?duty truck.

Key words: hydrogen fuel cell, heavy?duty truck, power system, parameter matching, dynamic performance

Shichuang Liu,Huanwu Sun,Ruixin Wang,Hao Li,Dongguang Zhang. Matching Design of Power System for High Power Hydrogen Fuel Cell Heavy⁃duty Truck[J].Automotive Engineering, 2021, 43(2): 196-203.

Figures/Tables 16

References 12

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参数	数值
车型尺寸/mm	6920×2550×3970
结构类型	并联式
整车质量/kg	46 000
轴距/mm	4 200
滚动阻力系数	0.012
迎风面积/m²	9.45
最高车速/（km·h^-1）	85
最大爬坡度/%	20
风阻系数	0.65
系统效率	0.92
滚动半径/mm	572
续航里程/km	≥400

参数	数值
电机型式	永磁同步电机
额定功率/kW	150
额定转矩/（N·m）	800
峰值功率/（kW）	250
峰值转矩/（N·m）	1 600
额定转速/（r·min^-1）	1 800
最高转速/（r·min^-1）	3 500
防护等级	IP67
冷却方式	液冷

名称	参数
变速器挡位数	6
变速器主减速比	6.833
驱动桥速比	4.11

参数	数值
燃料类型	氢气
电堆尺寸/mm	1100×510×250
冷却方式	液冷
工作环境温度/℃	-10～45
氢气气源压力/ MPa	35
额定功率/kW	95
峰值功率/kW	97
输出电压范围/V	260-500
输出电流范围/A	0-500

项目名称	技术参数
电芯规格/ （A·h）	228
标准箱大小/ mm	C箱：1060×630×240； G箱：950×630×240
成组方式	1P48S
总电量/（kW·h）	127.7
额定电压/V	560.28
持续充放电/A	228
热管理策略	加热膜加热，液冷
充电方式	单枪快充

Matching Design of Power System for High Power Hydrogen Fuel Cell Heavy⁃duty Truck

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Figures/Tables 16

References 12

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参数	数值
氢燃料电池功率/kW	100
动力电池总电量/（kW·h）	127
电机峰值功率/kW	1 600
电机最大转矩/（N·m）	250
变速器挡位数	6
驱动桥速比	4.11
氢气瓶容量（个数）/L（个）	140（8）

性能指标	仿真值	试验结果
最高车速/（km·h^-1）	94.72	85
最大爬坡度/%	24.28	20
10 km/h爬坡度/%	23.97	20
满载续航/km	*	400
纯电动续航/km	72.03	50

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