A battery pack comprises a set of battery cells, a battery cell holder holding the battery cells, at least one battery strap having a first end connected to a terminal of one of the battery cells and a second end extending from the battery cell holder, a printed circuit board having a first side and a second side, components mounted on the second side of the printed circuit board, a trace on the second side of the printed circuit board extending from one components to a contact connected to the trace and mated with the second end of the at least one battery strap. Multiple vias extend from the first side to the second side, and the contact comprises a first portion having a through hole and a leg integrally formed with and approximately perpendicular to the first portion, the leg extending from the first side of the PCB to the second side of the PCB through a first via, the trace extending from the first via, the leg soldered to the second side of the PCB and the via and the through hole aligned with a second via adjacent to the first via, the through hole sized and configured to receive a PCB end of the strap, the PCB end of the strap soldered to the contact.

According to an embodiment, an electronic device includes a processor, a frame disposed at a rear side of the processor, a cylindrical battery disposed at a rear side of the frame, a composite sheet having at least one heat insulating member surrounding an outer peripheral surface of the cylindrical battery and at least one thermally conductive member surrounding the heat insulating member, and a heat sink disposed at a rear side of the composite sheet.

Various smart doorbell arrangements are presented. Based on a measured temperature of the smart doorbell, operation of the smart doorbell device may be altered such that more heat or less heat is generated without affecting user-facing features. Based on another measured temperature, operation of the smart doorbell may be altered such that a chime that is electrically coupled to the smart doorbell device is not sounded in response to a doorbell actuation, but that a notification of the doorbell actuation is wirelessly transmitted by the smart doorbell device.

A battery cell assembly includes a frame and multiple battery cells which are held in cell-individual recesses of the frame so as to be aligned parallel to one another. A respective gap filler is arranged between lateral surfaces of the battery cells and the recess inner faces facing the lateral surfaces, said gap filler connecting the battery cells and the frame together. The frame is made of a solid, dimensionally stable, and thermally conductive material, and the gap filler is made of a permanently deformable thermally conductive material. Furthermore, the inner faces of the recesses extend in the vertical direction of the battery cells over the entire length thereof.

A battery cell assembly includes a frame and multiple battery cells which are held in cell-individual recesses of the frame so as to be aligned parallel to one another. A respective gap filler is arranged between lateral surfaces of the battery cells and the recess inner faces facing the lateral surfaces, said gap filler connecting the battery cells and the frame together. The frame is made of a solid, dimensionally stable, and thermally conductive material, and the gap filler is made of a permanently deformable thermally conductive material. Furthermore, the inner faces of the recesses extend in the vertical direction of the battery cells over the entire length thereof.

A battery cell assembly electrically connected to a circuit board and a battery package including multiple battery cell assemblies are disclosed. The battery cell assembly includes a battery cell forming electrodes with opposite polarities on the upper and the lower ends, one end fixed to the upper end electrode so that an electric current can flow, the first connector including the other end extended in a direction away from the center of the battery cell, is made of metal plate, and includes the second connector including the other end extended in a direction away from the center of the battery cell. The other end of the first connector and the other end of the second connector are extended in directions, so that the space between the two ends gets wider as they approach the bottom end, and directions that the two ends are not parallel with each other.

A power storage module including: a plurality of power storage devices; and a holder that holds the plurality of power storage devices, wherein each of the power storage devices includes a case including an opening, an electrode assembly accommodated in the case and including a first electrode and a second electrode, and a sealing member that seals the opening, the case includes a cylindrical cylinder part, an opening end part corresponding to the opening provided at one end part of the cylinder part, and a bottom part that closes another end part of the cylinder part, in each of the plurality of power storage devices, at least a part of an outer peripheral surface of the cylinder part is covered with an insulating layer, and positions of a pair of the power storage devices adjacent to each other included in the plurality of power storage devices are regulated by the insulating layer.

A power storage module including: a plurality of power storage devices; and a holder that holds the plurality of power storage devices, wherein each of the power storage devices includes a case including an opening, an electrode assembly accommodated in the case and including a first electrode and a second electrode, and a sealing member that seals the opening, the case includes a cylindrical cylinder part, an opening end part corresponding to the opening provided at one end part of the cylinder part, and a bottom part that closes another end part of the cylinder part, in each of the plurality of power storage devices, at least a part of an outer peripheral surface of the cylinder part is covered with an insulating layer, and positions of a pair of the power storage devices adjacent to each other included in the plurality of power storage devices are regulated by the insulating layer.

A power storage module includes a plurality of power storage devices (for example, secondary batteries) arranged side by side and a holder having a container that contains the plurality of power storage devices. The holder includes a first holder and a second holder. Each of the plurality of power storage devices includes a first end and a second end. The first end is contained in the first holder and the second end is contained in the second holder. In the holder, resin is disposed in at least one of a space between the plurality of power storage devices and a space between the power storage device and the holder. The holder is provided with a gap defined by at least the resin and the holder and communicating with the outside of the holder.

A power storage module includes a plurality of power storage devices (for example, secondary batteries) arranged side by side and a holder having a container that contains the plurality of power storage devices. The holder includes a first holder and a second holder. Each of the plurality of power storage devices includes a first end and a second end. The first end is contained in the first holder and the second end is contained in the second holder. In the holder, resin is disposed in at least one of a space between the plurality of power storage devices and a space between the power storage device and the holder. The holder is provided with a gap defined by at least the resin and the holder and communicating with the outside of the holder.