The invention relates to a circuit arrangement (24) for a vehicle electrical system of an electrically driven motor vehicle (42), comprising: a high-voltage battery (26) for supplying power to an electrical drive machine (28) of the motor vehicle (42); a range extender (22), which is designed to charge the high-voltage battery (26) and which has a plurality of identical fuel-cell base modules (10) having interfaces for supplying reactants in the form of hydrogen and air; a switching device (32) for connecting the range extender (22), the circuit arrangement (24) having no DC-to-DC converter; a control device (36), which is designed to carry out the following steps after the control device has received an activation signal regarding the range extender (22): determining an operating point of the range extender (22) in dependence on at least one variable of the high-voltage battery (26); defining a setpoint value regarding the supply of the reactants to the fuel-cell base modules (10) and/or a setpoint value regarding an operating temperature of the fuel cells on the basis of the determined operating point; controlling a system (40), which is designed to provide the reactants to and/or to control the temperature of the fuel cells, in accordance with each defined setpoint value; controlling the switching device (34) so as to connect the range extender (22) only after the setpoint value regarding the supply of the reactants and/or the setpoint value regarding the operating temperature has been reached. The invention further relates to an electrically driven motor vehicle (42) having the circuit arrangement (24) and to a method for operating the circuit arrangement (24).
本发明涉及一种用于电驱动机动车(42)的车辆电气系统的电路布置(24),包括:用于向该机动车(42)的电驱动机(28)供应功率的高电压电池(26);增程器(22),其被设计成向该高电压电池(26)充电并且具有有用于供应氢气和空气形式的反应物的接口的多个相同的燃料电池基本模块(10);用于连接该增程器(22)的开关装置(32),该电路布置(42)不具有DC‑DC转换器;控制装置(36),其被设计成在已经接收到与该增程器(22)相关的激活信号之后执行以下步骤:取决于该高电压电池(26)的至少一个变量来确定该增程器(22)的工作点;基于所确定的工作点,来定义与该燃料电池基本模块(10)的反应物的供应相关的设定值和/或与该燃料电池的工作温度相关的设定值;对系统(40)进行控制,该系统被设计成根据每一所定义的设定值向燃料电池提供反应物和/或控制该燃料电池的温度;仅在已经达到与反应物的供应相关的设定值和/或与工作温度相关的设定值之后,控制该开关装置(34)以连接增程器(22)。本发明还涉及一种具有该电路布置(24)的电驱动机动车(42)以及一种用于操作该电路布置(24)的方法。
CIRCUIT ARRANGEMENT FOR A VEHICLE ELECTRICAL SYSTEM OF AN ELECTRICALLY DRIVEN MOTOR VEHICLE AND METHOD FOR OPERATING THE CIRCUIT ARRANGEMENT
电驱动机动车的车辆电气系统的电路布置以及用于操作此类电路布置的方法
2021-12-10
Patent
Electronic Resource
Chinese
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