SAFETY APPARATUS AND BATTERY

Provided are a security apparatus, a manufacturing method thereof, and a battery. A first score-line (1) and a second score-line (2) are disposed on the security apparatus. The first score-line (1) and the second score-line (2) are connected to form a closed line. The first score-line (1) and the second score-line (2) divide the security apparatus into an outer frame (100) and a valve sheet (200). A thickness of the security apparatus at the second score-line (2) is greater than a thickness of the security apparatus at the first score-line (1). The valve sheet (200) is capable of being separated from the outer frame (100) along the first score-line (1) and being kept in connection with the outer frame (100) at the second score-line (2).