| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a conventional lithium battery is formed so as to produce a target power supply by electrically coupling one or more lithium batteries in order that a user obtains a required power supply, but since only power supply lines are coupled with lithium batteries mutually separated between them, safety incidents and inconvenience of walking may be given to a walker in the field.SOLUTION: A lithium battery is equipped with a coupling device. The coupling device is to couple one or more lithium batteries so that the user can use them in accordance with a required amount of power by simplifying the structure of a battery module housed in the lithium battery and reducing the size thereof, and by mechanically fastening one or more lithium batteries. |
