Foldable electronic device including plurality of battery modules and operating method thereof

A foldable electronic device, comprising:

• a first housing;
• a hinge module;
• a second housing mutually rotatably connected with the first housing through the hinge module;
• a main substrate disposed in an internal space of the first housing;
• a first battery module disposed in the internal space of the first housing and including a first battery circuit substrate;
• a second battery module disposed in an internal space of the second housing and including a second battery circuit substrate;
• a first flexible printed circuit board (FPCB) electrically connecting the main substrate and the first battery circuit substrate;
• a second FPCB electrically connecting the first battery circuit substrate and the second battery circuit substrate;
• a switching circuit configured to control an electrical connection between the second battery module and the main substrate;
• and
• a control circuit disposed on the first battery circuit substrate,
• wherein the control circuit is configured to control the switching circuit based on a difference between a first voltage of the first battery module and a second voltage of the second battery module, to cut off power of the second battery module.

A method of operating a foldable electronic device including a plurality of battery modules, the foldable electronic device comprising:

• a first housing;
• a hinge module;
• a second housing mutually rotatably connected with the first housing through the hinge module;
• a main substrate disposed in an internal space of the first housing;
• a first battery module disposed in the internal space of the first housing and including a first battery circuit substrate;
• a second battery module disposed in an internal space of the second housing and including a second battery circuit substrate;
• a first flexible printed circuit board (FPCB) electrically connecting the main substrate and the first battery circuit substrate;
• a second FPCB electrically connecting the first battery circuit substrate and the second battery circuit substrate;
• a first switching circuit configured to control an electrical connection between the first battery module and the main substrate;
• a second switching circuit configured to control an electrical connection between the second battery module and the main substrate;
• and
• a control circuit disposed on the first battery circuit substrate,
• wherein the method comprises:
• controlling, by the control circuit, the first switching circuit or the second switching circuit based on a difference between a first voltage of the first battery module and a second voltage of the second battery module, to cut off power of the first battery module or the second battery module.