Battery system with a battery for supplying a high-voltage network and at least one switching unit for limiting a residual current flowing across the battery and the high-voltage terminals of the battery and/or for limiting a voltage applied from the battery across the high-voltage terminals of the battery to the high-voltage network and a corresponding method

Abstract

The present invention relates to a battery system (100) comprising a battery (101) designed to supply at least two consumers (140, 141) connected in parallel of a high-voltage network (103), which battery is connected at one of the high-voltage tes (130, 131) thereof to at least two fuses (110, 111). In this way, in each case, one of the at least two fuses (110, 111) is assigned to one of the at least two consumers (140, 141) and can be connected to the assigned consumer (140, 141). The battery system (100) comprises at least one switching unit (155) with two switching states. In one state of the switching unit, in which the at least two consumers (140, 141) are connected to the high-voltage terminals (130, 131) of the battery (101), said switching unit switches into a first switching state of the two switching states upon application of an operating current flowing across the assigned consumer (140, 141), said operating current also flowing through each fuse (110, 111), and upon triggering one of the at least two fuses (110, 111), switches from the first switching state into a second switching state of the two switching states, in which second switching state the at least one switching unit interrupts residual current flowing across the battery (101), the high-voltage terminals (130, 131) of the battery (101) and each consumer (140, 141) whose assigned fuse (110, 111) has not triggered, and / or switches off any residual voltage applied from the battery (101) across the high-voltage terminals (130, 131) of the battery (101) and a non-triggered fuse (110, 111) to the high-voltage network (103).

Description

technical field [0001] The invention relates to a battery system having a battery designed to supply at least two parallel-connected loads of a high-voltage network. The invention also relates to a corresponding method for limiting the fault current flowing through a battery designed to supply at least two parallel-connected loads of a high-voltage network and through the high-voltage terminals of the battery and / or for Limits the voltage applied by the battery to the high voltage grid through the battery's high voltage terminals. Furthermore, the invention relates to a vehicle having a battery system as described above. Background technique [0002] In vehicles (passenger vehicles), battery systems are used which have batteries which can supply a high voltage (high voltage) respectively to the high voltage network. Accordingly, the battery cells or battery modules of such batteries are connected in series. Such a battery must then provide only a small current even at hig...

AI Technical Summary

Problems solved by technology

In other words, if, in the case of this battery system 100 shown in FIG. is switched to be voltage-free and there is a risk of electric shock when touching the exposed part of the other load 140, 141

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