Motor Vehicle, Battery, and Method for Controlling a Battery

摘要

A battery comprises a number n of battery module strings, wherein n is a natural number greater than or equal to two. The battery module strings have several battery modules, and one battery module has a coupling unit. The coupling unit is configured as a voltage transformer and couples the battery modules to each other. A method of controlling the battery includes supplying a load connected to the battery with a predefined and substantially constant total power. The total power corresponds to a sum of n individual powers of the n battery module strings. The method further includes setting n−1 string voltages, which are each present at the n−1 battery module strings, according to the total power, the load, and by defining a string voltage present at an nth battery module string with amplitude and phase position. At least two of the n individual powers are asymmetrical to each other.

主权项

1. A method for controlling a battery comprising a number n of battery module strings which have a plurality of battery modules, each battery module having a coupling unit configured as a voltage converter and configured to couple the battery modules to one another, the method comprising:
supplying a load, which is connected to the battery, with a predetermined and substantially constant total power, the total power corresponding to a sum of n individual powers of the n battery module strings; and adjusting n−1 string voltages which are present in each case at n−1 battery module strings, by the total power, the load and by setting a string voltage present at an nth battery module string with amplitude and phase relation, wherein at least two of the n individual powers are unbalanced with respect to one another, and wherein n is a natural number and is greater than or equal to two.