Hybrid energy storage system

A method for controlling at least one electrophysical energy flow in at least one direction between at least two energy storage units, comprising a first energy storage unit and a second energy storage unit, each with a nominal energy flow, and at least one external energy sink, comprising at least one control circuit having a microcontroller and at least one boost converter comprising at least one electronic switch, and at least one buck converter,

• wherein, in the event that the at least one external energy sink requires a higher energy flow than the nominal energy flow from the second energy storage unit, the at least one energy sink is provided with an energy flow from the first energy storage unit, while the second energy storage unit supplies an energy flow of zero or a constant energy flow corresponding at most to the nominal energy flow of the second energy storage unit,
• wherein a MOSFET transistor is used as the at least one electronic switch, wherein positive feedback phenomena of the MOSFET transistor are suppressed,
• wherein reversed energy flows through the MOSFET transistor from the first to the second energy storage unit are suppressed,
• wherein a decoupling circuit comprising at least one limiter, at least one comparator and at least one AND gate is used, wherein the at least one AND gate switches off the electronic switch when the at least one boost converter is switched off,
• wherein the microcontroller is connected to the at least one decoupling circuit via a data coupler isolating different potentials of the at least two energy storage units to disengage the decoupling circuit.

A method for controlling at least one electrophysical energy flow in at least one direction between at least two energy storage units, comprising a first energy storage unit and a second energy storage unit, each with a nominal energy flow, and at least one external energy sink and at least one external energy source, comprising at least one control circuit having a microcontroller and at least one boost converter comprising at least one electronic switch, and at least one buck converter, wherein, in the event that the at least one external energy sink requires a higher energy flow than the nominal energy flow from the second energy storage unit, the at least one energy sink is provided with an energy flow from the first energy storage unit, while the second energy storage unit supplies an energy flow of zero or a constant energy flow corresponding at most to the nominal energy flow of the second energy storage unit,

• wherein a MOSFET transistor is used as the at least one electronic switch, wherein positive feedback phenomena of the MOSFET transistor are suppressed,
• wherein reversed energy flows through the MOSFET transistor from the first to the second energy storage unit are suppressed,
• wherein a decoupling circuit comprising at least one limiter, at least one comparator and at least one AND gate is used, wherein the at least one AND gate switches off the electronic switch when the at least one boost converter is switched off, wherein the microcontroller is connected to the at least one decoupling circuit via a data coupler isolating different potentials of the at least two energy storage units to disengage the decoupling circuit.