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    • 8. 发明公开
    • SICHERHEITSSCHALTUNGSANORDNUNG FÜR EINE ELEKTRISCHE ANTRIEBSEINHEIT
    • SICHERHEITSSCHALTUNGSANORDNUNGFÜREINE ELEKTRISCHE ANTRIEBSEINHEIT
    • EP3083318A1
    • 2016-10-26
    • EP14799392.7
    • 2014-11-13
    • Bayerische Motoren Werke Aktiengesellschaft
    • LOPEZ DE ARROYABE, Jose
    • B60L3/00B60L7/00
    • H02P6/14B60L3/00B60L3/0046B60L3/0061B60L3/0092B60L7/003H02P3/22
    • The invention relates to a safety circuit arrangement for an electrical drive unit, wherein the electrical drive unit includes a traction battery, an intermediate circuit capacitor connected in parallel to the traction battery, and an electric motor which can be supplied with electrical power by the traction battery, the electric motor having a plurality of phases which can be connected to the traction battery by means of a controllable inverter having a plurality of switch elements, having a discharge circuit which is designed to take a predeterminable discharge current from the intermediate circuit capacitor in the activated operational state of the discharge circuit, having a short-circuit control circuit which is designed to short-circuit at least some of the phases of the electric motor by controlling some of the switch elements in the activated operational state of the short-circuit control circuit, having a supply voltage circuit which is designed to provide a supply voltage on the basis of input voltage delivered to the supply voltage circuit, an intermediate circuit voltage applied to the intermediate circuit capacitor being delivered as input voltage, and having an activating element is designed to close an activation path when a switch-on condition is present in order to activate the discharge circuit and the short-circuit control circuit by providing the supply voltage.
    • 提供了一种用于电驱动单元的安全电路装置,其中电驱动单元包括牵引电池,与牵引电池并联连接的中间电路电容器和可由牵引电池供电的电机。 电机具有多个相,可以经由具有多个开关元件的可控逆变器连接到牵引电池。 安全电路装置包括:放电电路,被设计成在放电电路的激活工作状态下从中间电路电容获取可预定的放电电流;短路控制电路,被设计成使至少一些 通过将一些开关元件控制在短路控制电路的激活工作状态下的电机的相位,电源电压电路被设计成基于输送到电源电压电路的输入电压来提供电源电压 施加到作为输入电压输送的中间电路电容器的中间电路电压;以及激活元件,其被设计成当存在接通条件时关闭激活路径,以激活放电电路和短路控制 电路通过提供电源电压。