Battery module

The invention relates to a battery module and to an arrangement comprising a plurality of battery modules connected in series, comprising an energy store (3) having a positive and a negative connection (31, 32), a first and a second connection (A, B), a first and a second compensation connection (C, D), a boost converter (4) having a first and a second converter output (4a, 4b), and a decoupling switch (8), wherein the energy store (3) is connected at the positive connection (31) of the energy store to the first connection (A) and at the negative connection of the energy store to the second connection (B), wherein the first converter output (4a) is connected to the first compensation connection (C) and the second converter output (4b) is connected to the second compensation connection (D), wherein the converter (4) is designed to draw energy from the energy store (3) and to provide said energy to the converter outputs (4a, 4b) of the converter in the form of current, and wherein the decoupling switch (8) is c