The present disclosure includes a battery module having a stack of electrochemical cells that includes terminals, a housing that receives the stack of electrochemical cells, and a bus bar carrier disposed over the stack of electrochemical cells such that bus bars disposed on the bus bar carrier interface with the terminals of the stack of electrochemical cells.

Provided is a battery pack including a pack case configured to form an exterior; a cell assembly accommodated in the pack case, and including a plurality of battery cells respectively including electrode leads; a pack cover configured to cover the pack case so as to package the cell assembly; and a lead connecting substrate provided between the cell assembly and the pack cover, configured to connect the electrode leads of the plurality of battery cells to one another, and including insert-molded terminals penetrating through the pack cover to be connected to an external power supply.

The secondary battery includes a case in which a positive electrode lead and a negative electrode lead are provided, wherein the case includes an external layer exposed to the outside, an insulation layer disposed in the case and insulated, a conductive layer stacked between the external layer and the insulation layer, made of a conductive material, and having one side coming into contact with the positive electrode lead and the other side coming into contact with the negative electrode lead, and a safety member disposed at a center of the conductive layer to prevent electricity from flowing through the conductive layer at a predetermined temperature or less and melted at the predetermined temperature or more to allow the electricity to flow through the conductive layer.

Battery parts, such as battery terminals, and associated systems and methods for making the same are disclosed herein. In some embodiments, a battery part includes a body having a base portion and a lug portion extending from the base portion. The battery part can further include a light-curable sealing material at least partially covering an exterior surface of the base portion. The sealing material is configured to seal an interface between the battery part and the material of a battery container when the base portion is embedded in the battery container material.

Disclosed is a non-lead conductive cap for a battery terminal and battery. The battery may comprise a battery housing and a positive and negative terminal, the positive and negative terminal being accessible through the battery housing; wherein the positive and negative terminal further comprise an electrically conductive cap mounted on both the positive and negative terminal, wherein the electrically conductive cap does not comprise lead.

Battery parts, such as battery terminals, and associated systems and methods for making the same are disclosed herein. In some embodiments, a battery part includes a body having a base portion and a lug portion extending from the base portion. The battery part can further include a light-curable sealing material at least partially covering an exterior surface of the base portion. The sealing material is configured to seal an interface between the battery part and the material of a battery container when the base portion is embedded in the battery container material.

The present disclosure includes a battery module having a stack of electrochemical cells that includes terminals, a housing that receives the stack of electrochemical cells, and a bus bar carrier disposed over the stack of electrochemical cells such that bus bars disposed on the bus bar carrier interface with the terminals of the stack of electrochemical cells. The bus bar carrier includes opposing first and second guide extensions, the stack of electrochemical cells is disposed between the opposing first and second guide extensions, and the opposing first and second guide extensions physically contact a first outer electrochemical cell and a second outer electrochemical cell, respectively, of the stack of electrochemical cells to guide the terminals of the stack of electrochemical cells toward corresponding ones of the bus bars disposed on the bus bar carrier.

The secondary battery includes a case in which a positive electrode lead and a negative electrode lead are provided, wherein the case includes an external layer exposed to the outside, an insulation layer disposed in the case and insulated, a conductive layer stacked between the external layer and the insulation layer, made of a conductive material, and having one side coming into contact with the positive electrode lead and the other side coming into contact with the negative electrode lead, and a safety member disposed at a center of the conductive layer to prevent electricity from flowing through the conductive layer at a predetermined temperature or less and melted at the predetermined temperature or more to allow the electricity to flow through the conductive layer.

A packaging material for a power storage device, comprising at least: a substrate layer; a metallic foil layer with an anti-corrosion treatment layer being disposed on one face or both faces thereof; and a sealant layer in this order, wherein the sealant layer includes a polypropylene-based resin (A) and 1 to 40% by mass of incompatible component (B), and maximum seal strength S.sub.M in an adhered portion resulting from adhesion by heat-sealing the packaging material is 35 N/15 mm or more, and in addition, the packaging material for a power storage device satisfies the following requirements (1) or (2): (1) a ratio S.sub.S/S.sub.M of seal strength S.sub.S to maximum seal strength S.sub.M in a stable range is 0.3 or more; (2) a ratio S.sub.A/S.sub.M of average seal strength S.sub.A to maximum seal strength S.sub.M is 0.3 or more.

A positive electrode is disclosed including a positive electrode collector containing aluminum, a positive electrode mixture layer containing a positive electrode active substance constituted from a lithium transition metal oxide, and a protective layer provided between the positive electrode collector and the positive electrode mixture layer. The protective layer contains inorganic compound particles and a conductive material, and has a recessed structure wherein the positive electrode mixture layer is recessed into the protective layer.