Method and apparatus for controlling separator tension of laminated plates of secondary battery

A separator tension controlling apparatus for stacking an electrode plate of a secondary battery, the apparatus comprising:

• a separator loading member on which a fixing plate is mounted such that a separator loading unit, a separator supplying member, and a separator moving member which are mounted on an upper surface of a table are capable of being mounted so that a negative electrode and a positive electrode of the secondary battery are capable of being stacked to cross each other by a separator;
• the separator supplying member mounted on a first side of the separator loading unit such that the separator is capable of being supplied to the separator loading unit;
• and
• the separator moving member mounted on an upper side of the separator loading member such that the separator supplied from the separator supplying member is capable of being supplied with uniform tension,
• wherein the separator moving member is configured to be moved outward of the secondary battery that is stacked such that a tension of the separator is capable of being controlled, and a distance between a pair of lower feeding rollers that is mounted on the separator moving member is spaced apart by a predetermined distance such that the tension of the separator is pulled with a tension uniformly generated from a tension controlling unit,
• wherein the separator moving member comprises:
• a first side plate and a second side plate formed in predetermined shapes;
• a pair of upper guide rollers positioned at an upper portion of the separator moving member and configured to guide the separator;
• sliding long holes respectively formed on the first and second side plates such that the distance between the lower feeding rollers is capable of being controlled;
• the pair of lower feeding rollers mounted such that the pair of lower feeding rollers is capable of being moved along the sliding long holes;
• and
• a length changing means mounted on the sliding long holes and configured to control the distance between the pair of lower feeding rollers controlling the tension of the separator.