Abstract: A battery module includes an insulating base, a pair of electrodes and multiple battery packs. Each electrode is installed to the insulating base and has a bridge portion and a wire connecting part exposed from the insulating base, and a pair of lugs is extended smoothly from each battery pack, and an end of at least a part of the lugs is attached to each bridge portion correspondingly. Therefore, the lug is not being twisted or deformed easily, and the battery module may have good conductive efficiency, long service life, and convenience of changing the battery pack.

Abstract: This disclosure provides a voltage variable battery cell module having two battery cell groups and an insulative seat. An output anode and an output cathode are embedded in the insulative seat. The battery cell groups are respectively electrically connected to the output anode and the output cathode, and the battery cell groups are connected in series.

Abstract: A battery module includes an insulating base, a pair of electrodes and multiple battery packs. Each electrode is installed to the insulating base and has a bridge portion and a wire connecting part exposed from the insulating base, and a pair of lugs is extended smoothly from each battery pack, and an end of at least a part of the lugs is attached to each bridge portion correspondingly. Therefore, the lug is not being twisted or deformed easily, and the battery module may have good conductive efficiency, long service life, and convenience of changing the battery pack.

Abstract: A manufacturing method of a lithium battery cell is provided and has steps of providing an bag, electrode sheets and a conduit, a part of an edge of the bag being pressed to form an sealing edge, an electrode chamber being enclosed in the bag, the electrode sheet being accommodated in the electrode chamber, the sealing edge being strip-shaped and an air chamber being formed therein, the air chamber being communicated to the electrode chamber, the conduit being disposed on the sealing edge, two ends of the conduit being an inner end and an outer end, the inner end being communicated to the air chamber and separated from the electrode chamber, and the outer end being exposed from the bag; injecting an electrolyte into the electrode chamber through the conduit; pressing the air chamber to form a secondary sealing edge; cutting the secondary sealing edge to remove the conduit.