Flexible battery, circuit board and electronic device

A circuit board, comprising:

• a resistance detection circuit, electrically connected with a crack detection wiring of a flexible battery, and configured to be able to detect a resistance of the crack detection wiring, wherein the flexible battery comprises:
• a flexible encapsulation structure, having a battery area and a peripheral area surrounding the battery area, wherein the battery area comprises a plurality of rigid areas and a plurality of bending areas alternately arranged along a first direction;
• a plurality of battery cells, arranged in a one-to-one correspondence with the plurality of rigid areas, wherein, in a corresponding rigid area, the battery cell is cladded in the flexible encapsulation structure;
• and the crack detection wiring, located in the peripheral area and at least partially extending along the first direction, wherein, the crack detection wiring is cladded in the flexible encapsulation structure;
• and
• a bootstrap circuit, electrically connected with the crack detection wiring, and configured to receive a first voltage and output a second voltage to the crack detection wiring, wherein the second voltage is higher than the first voltage.

An electronic device comprising a flexible battery, wherein the flexible battery comprises:

• a flexible encapsulation structure, having a battery area and a peripheral area surrounding the battery area, wherein the battery area comprises a plurality of rigid areas and a plurality of bending areas alternately arranged along a first direction;
• a plurality of battery cells, arranged in a one-to-one correspondence with the plurality of rigid areas, wherein, in a corresponding rigid area, the battery cell is cladded in the flexible encapsulation structure;
• and
• a crack detection wiring, located in the peripheral area and at least partially extending along the first direction, wherein, the crack detection wiring is cladded in the flexible encapsulation structure,
• wherein the flexible battery further comprises a flexible conductive layer, the flexible conductive layer is at least partially cladded in the flexible encapsulation structure, and is electrically connected with each battery cell;
• and
• the flexible conductive layer has a binding area outside the flexible encapsulation structure, the binding area has a crack detection pad electrically connected with the crack detection wiring.