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An energy transformer for a battery system is disclosed. The energy transformer includes a plurality of DC/DC converters each having a first and a second input and a first and a second output. The first output of a first of the DC/DC converters is connected to a first output of the energy transforme

An energy transformer for a battery system is disclosed. The energy transformer includes a plurality of DC/DC converters each having a first and a second input and a first and a second output. The first output of a first of the DC/DC converters is connected to a first output of the energy transformer and the second output of a last of the DC/DC converters is connected to a second output of the energy transformer. The first and second inputs are designed for connecting a battery module. The DC/DC converters are connected in series on the output side. The energy transformer has a plurality of first diodes each of which have an anode connected to the first input of one of the DC/DC converters and a cathode connected to the second input of another DC/DC converter so that the DC/DC converters are connected in series on the input side and via a second diode having an anode connected to the first input of the first of the DC/DC converters and a cathode connected to the first output of the energy transformer.

대표청구항 ▼

1. An energy transmitter for a battery system, with the energy transmitter comprising a plurality of DC/DC converters in each case having a first and a second input and a first and a second output, with the first output of a first of the plurality of DC/DC converters being connected to a first outpu

1. An energy transmitter for a battery system, with the energy transmitter comprising a plurality of DC/DC converters in each case having a first and a second input and a first and a second output, with the first output of a first of the plurality of DC/DC converters being connected to a first output of the energy transmitter, and with the second output of the last of the plurality of DC/DC converters being connected to a second output of the energy transmitter, with the first and second inputs being designed for connection of a battery module, and with the plurality of DC/DC converters being connected in series on the output side, and further comprising a plurality of first diodes, in each case one of which has an anode which is connected to the first input of one of the plurality of DC/DC converters, and a cathode which is connected to the second input of another of the plurality of DC/DC converters, such that the plurality of DC/DC converters are connected in series on the input side, and a second diode, which has an anode, which is connected to the first input of the first of the plurality of DC/DC converters, and a cathode which is connected to the first output of the energy transmitter. 2. The energy transmitter of claim 1, further comprising a plurality of first decoupling switches, wherein the battery module is configured to be connected by one of the first decoupling switches to the plurality of DC/DC converters. 3. The energy transmitter of claim 2, in which the first decoupling switches are in the form of relays. 4. The energy transmitter of claim 2, further comprising a plurality of second decoupling switches, one of which is in each case connected in series with the first diodes and the second diode and is designed to decouple the first output of a respective DC/DC converter from the first input of the respective DC/DC converter. 5. The energy transmitter of claim 1, in which the plurality of DC/DC converters are in the form of bi-directional, non-isolating DC/DC converters. 6. The energy transmitter of claim 5, wherein the bi-directional, non-isolating DC/DC converters are step-up/step-down converters or Buck-Boost converters. 7. The energy transmitter of claim 1, in which the DC/DC converters each have a coil, first to fourth switches, and a controller configured to control the first to fourth switches, with the first switch being connected between the first input of the DC/DC converter and a first connection of the coil, with the second switch being connected between the first connection of the coil and the second input of the DC/DC converter, with the third switch being connected between a second connection of the coil and the second input of the DC/DC converter, and with the fourth switch being connected between the second connection of the coil and the first output of the DC/DC converter. 8. The energy transmitter of claim 7, in which each controller has a first control input for a first control signal and is designed to electrically connect the first output of the DC/DC converter to the second output of the DC/DC converter by closing the third switch and the fourth switch (S4), and to decouple the first input of the DC/DC converter by opening the first switch, in response to the reception of the first control signal. 9. The energy transmitter of claim 7, in which each controller has a second control input for a second control signal and is designed to increase a voltage between the first and the second outputs of the DC/DC converter in response to the reception of the second control signal. 10. A battery system, comprising: an energy transmitter; anda plurality of battery modules which each have at least one battery cell and battery poles,wherein the energy transmitter comprises a plurality of DC/DC converters in each case having a first and a second input and a first and a second output, with the first output of a first of the plurality of DC/DC converters being connected to a first output of the energy transmitter, and with the second output of the last of the plurality of DC/DC converters being connected to a second output of the energy transmitter, and with the plurality of DC/DC converters being connected in series on the output side, and further comprising a plurality of first diodes, in each case one of which has an anode which is connected to the first input of one of the plurality of DC/DC converters, and a cathode which is connected to the second input of another of the plurality of DC/DC converters, such that the plurality of DC/DC converters are connected in series on the input side, and a second diode, which has an anode, which is connected to the first input of the first of the plurality of DC/DC converters, and a cathode which is connected to the first output of the energy transmitter, andwherein the battery poles are detachably connected to a corresponding input of the first and second inputs of one DC/DC converter of the plurality of DC/DC converters of the energy transmitter. 11. A motor vehicle having an energy transmitter, with the energy transmitter comprising a plurality of DC/DC converters in each case having a first and a second input and a first and a second output, with the first output of a first of the plurality of DC/DC converters being connected to a first output of the energy transmitter, and with the second output of the last of the plurality of DC/DC converters being connected to a second output of the energy transmitter, with the first and second inputs being designed for connection of a battery module, and with the plurality of DC/DC converters being connected in series on the output side, and further comprising a plurality of first diodes, in each case one of which has an anode which is connected to the first input of one of the plurality of DC/DC converters, and a cathode which is connected to the second input of another of the plurality of DC/DC converters, such that the plurality of DC/DC converters are connected in series on the input side, and a second diode, which has an anode, which is connected to the first input of the first of the plurality of DC/DC converters, and a cathode which is connected to the first output of the energy transmitter.