FIELD: instrument engineering.
SUBSTANCE: invention relates to a secondary battery, and more particularly to a secondary battery with a protection device against overload. According to the invention, the secondary battery with overload protection device comprises: a battery housing with a chamber for holding a plurality of cells of the secondary battery; heat dissipation plate fixed to the battery housing; and overload relief device disposed in the housing and comprising a plurality of battery modules remove congestion electrically connected with the elements of the secondary battery. Each module comprises a balanced overload relief resistor attached to the heat dissipation plate. Battery container and the heat dissipation plate is made of metal, with balanced resistors are cement resistors while removing modules overload electrically connected a plurality of first connectors, and with cement resistors electrically connected a plurality of second connectors that are removably attached to a respective one of the first connectors.
EFFECT: technical result of the invention is to provide a good heat dissipation characteristics, and charging efficiency during the charging process, which significantly reduces the possibility of high-temperature explosion.
3 cl, 4 dwg
