| abstract |
A polymer battery module (2) provided with tabs (4) is putnin a package (5) and an open end part of the package (5) isnheat-sealed by a heat-sealing machine (10). The heat-sealingnmachine (10) is provided with a pair of sealing heads (10a, 10b)nrespectively having sealing surfaces (12). The sealing surfacesn(12) of the sealing heads (10a, 10b) are provided with recessesn(11) in parts thereof corresponding to the tabs (4) of the polymernbattery module (2) contained in the package (5) as located innplace between the sealing heads (10a, 10b) for heat-sealing. |