Induction heating device, system, production line, method and application

The invention relates to an induction heating device for heating a metal product, comprising a plurality of at least two resonant circuits for generating in each case a magnetic field for heating the metal product, and an energy supply device for supplying electrical energy to the resonant circuits, comprising an isolation switch for connecting the induction heating device to a power source, and at least one inverter for converting a direct current into an alternating current for supplying power to the resonant circuit, the energy supply device comprising a switching device, the switching device being arranged to allow at least indirect energy coupling between the isolation switch and the resonant circuit, the number of resonant circuits that can be simultaneously energy-coupled is less than the number of resonant circuits of the induction heating device. 本发明涉及一种用于加热金属产品的感应加热装置，包括多个至少两个谐振电路，用于在每种情况下产生用于加热金属产品的磁场，以及用于向谐振电路提供电能的能量供应装置，包括隔离开关，用于将感应加热装置连接到电源，和至少一个逆变器，用于将直流电转换成交流电以向谐振电路供电，其中，能量供应装置包括开关装置，其中，开关装置被设