A battery pack includes a battery assembly including battery cells parallel to one another and an outer case. Each battery cell includes a discharge valve provided on an end surface thereof, and an end-surface electrode provided at an end portion thereof. A welding surface of the lead plate is connected to the end-surface electrode arranged on the same plane. The battery pack includes a backflow-restricting layer disposed on a non-welding surface of the lead plate in the outer case. The lead plate has a gas permeation gap therein allowing a gas discharged from the discharge valve to pass in a discharge direction of the backflow-restricting layer. The backflow-restricting layer includes a resistance part configured to allow the gas passing through gas permeation gap to pass in the discharge direction, and to suppress or prevent the exhaust gas from passing in a direction opposite to the discharge direction.

A battery pack includes a battery assembly including battery cells parallel to one another and an outer case. Each battery cell includes a discharge valve provided on an end surface thereof, and an end-surface electrode provided at an end portion thereof. A welding surface of the lead plate is connected to the end-surface electrode arranged on the same plane. The battery pack includes a backflow-restricting layer disposed on a non-welding surface of the lead plate in the outer case. The lead plate has a gas permeation gap therein allowing a gas discharged from the discharge valve to pass in a discharge direction of the backflow-restricting layer. The backflow-restricting layer includes a resistance part configured to allow the gas passing through gas permeation gap to pass in the discharge direction, and to suppress or prevent the exhaust gas from passing in a direction opposite to the discharge direction.

A connector of a battery pack includes first pads at both sides of one end of the connector, and second pads at both sides of another end of the connector, wherein the first pads are in contact with each of first and second open portions, and the second pads are in contact with each of third and fourth open portions.

A connector of a battery pack includes first pads at both sides of one end of the connector, and second pads at both sides of another end of the connector, wherein the first pads are in contact with each of first and second open portions, and the second pads are in contact with each of third and fourth open portions.

A battery module according to an embodiment of the present disclosure includes a plurality of battery cells and a bus bar assembly configured to electrically connect the electrode leads of the battery cells, and the bus bar assembly includes a bus bar frame configured to cover one side of the battery cells, a plurality of lead slots through which the electrode leads pass, a sensing bus bar connected to the electrode leads, and an elastic guider disposed at both left and right sides of the sensing bus bar in a left and right direction of the bus bar frame.

A battery module according to an embodiment of the present disclosure includes a plurality of battery cells and a bus bar assembly configured to electrically connect the electrode leads of the battery cells, and the bus bar assembly includes a bus bar frame configured to cover one side of the battery cells, a plurality of lead slots through which the electrode leads pass, a sensing bus bar connected to the electrode leads, and an elastic guider disposed at both left and right sides of the sensing bus bar in a left and right direction of the bus bar frame.

A busbar, a battery module, and a battery pack, including multiple conductive units; wherein each conductive unit includes a positive connection region, a negative connection region, and a first buffer section arranged between the positive connection region and the negative connection region; the positive connection region is configured to connect a positive electrode of a cell, and the negative connection region is configured to connect a negative electrode of another cell; adjacent two of the plurality of conductive units are electrically connected to each other by a connecting member. The above design can realize the series and parallel connection of cells, which can have a certain buffering effect, avoid the busbar from breaking, improve the reliability of the operation of the busbar, and ensure the reliability of the connection between the cells and the busbar.

A busbar, a battery module, and a battery pack, including multiple conductive units; wherein each conductive unit includes a positive connection region, a negative connection region, and a first buffer section arranged between the positive connection region and the negative connection region; the positive connection region is configured to connect a positive electrode of a cell, and the negative connection region is configured to connect a negative electrode of another cell; adjacent two of the plurality of conductive units are electrically connected to each other by a connecting member. The above design can realize the series and parallel connection of cells, which can have a certain buffering effect, avoid the busbar from breaking, improve the reliability of the operation of the busbar, and ensure the reliability of the connection between the cells and the busbar.

A battery cell, a battery pack and an electronic device with improved durability by reducing bend-induced damage, whereby a battery cell includes at least two battery units, each including a plurality of electrode leads, an electrode assembly, an electrolyte solution and an inner pouch in which the electrode assembly and the electrolyte solution are received, wherein at least one of the plurality of electrode leads of one battery unit is inserted into the other battery unit and electrically connected to the electrode assembly, and an outer pouch including at least two receiving portions in which the at least two battery units are received respectively, and a bending portion in which a part of the plurality of electrode leads is disposed and a part between the at least two receiving portions is bent.

A busbar assembly comprises an elongated support structure with a bottom, two side walls, extending in a length direction (L) along longitudinal sides, two spaced-apart central ridges extending in the length direction (L), a signal line, connected to the support structure between the central ridges, conductor members positioned between the side walls and an adjacent central ridge, adapted for interconnecting terminals of battery cells that are adjacent when seen in the length direction (L). The sidewalls and the ridges each extend at a cover side of the bottom and define top adhesive surface strips with respective widths Ws, Wc, the strips being situated in a connecting plane and adapted for adhesive connection to a top plate of a battery pack casing.