Cable tie device, cable tie connection structure, battery and electrical apparatus

A cable tie device comprising:

• a body part provided with a first through hole;
• a limiting part arranged on a first side of the body part in an extending direction of the first through hole;
• at least two connecting bars with respective first ends connected to the limiting part and respective second ends connected to a first side surface, towards the limiting part, of the body part, wherein the connecting bars are distributed on the periphery of the first through hole at intervals and are deformable;
• a first strap located between the at least two connecting bars, wherein a first end of the first strap is connected to the limiting part, and a second end of the first strap penetrates through the first through hole;
• and
• a second strap connected to the body part,
• wherein the first strap is configured to be movable in the first through hole so as to drive the limiting part to approach the body part, such that the at least two connecting bars can outwards deform and protrude in a radial direction of the first through hole, and when the first strap and the second strap are in a connection state, a member to be fixed is fixed.