A battery pack includes: a battery cell including first and second surfaces arranged at opposite sides and at which first and second electrodes are respectively located, and a side surface connecting the first and second surfaces to each other; a first circuit board arranged on the first surface and connected to the first electrode; a second circuit board arranged on the second surface; a first flexible line extending from a first side of the first circuit board to the second circuit board while surrounding a portion of the side surface of the battery cell; and a second flexible line extending from a second side of the first circuit board to the second surface of the battery cell while surrounding another portion of the side surface of the battery cell and connected to the second electrode.

A battery module includes a cell structure configured with a plurality of coin cell arrays each including a plurality of stacked coin cells, the plurality of coin cell arrays being arranged in an aligned manner in a transverse direction of the battery module. First and second bus bars may be arranged on both sides, respectively, of the cell structure and make an electrical connection to each array. First and second end plates may be arranged on a side surface of the first bus bar and the second bus bar, respectively. First and second covers may be arranged in front of and behind, respectively, the cell structure, with which the first and second end plates, respectively, may be combined, and which cover the front and the rear sides, respectively, of the cell structure.

A battery module includes a cell structure configured with a plurality of coin cell arrays each including a plurality of stacked coin cells, the plurality of coin cell arrays being arranged in an aligned manner in a transverse direction of the battery module. First and second bus bars may be arranged on both sides, respectively, of the cell structure and make an electrical connection to each array. First and second end plates may be arranged on a side surface of the first bus bar and the second bus bar, respectively. First and second covers may be arranged in front of and behind, respectively, the cell structure, with which the first and second end plates, respectively, may be combined, and which cover the front and the rear sides, respectively, of the cell structure.

A zinc-air charger having a case defining a plurality of pass core vents, and an internal case cavity; a plurality of zinc-air cells that are electrically coupled and disposed within the internal case cavity; a coupling plug configured to couple with and provide electrical power generated by the plurality of zinc-air cells to a device that is separate from the zinc-air charger; and a system configured to: output electrical power generated by the plurality of zinc-air cells to the device; identify a state of the plurality of zinc-air cells, determine, based at least in part on the identified state of the plurality of zinc-air cells, that one or more of the plurality of zinc-air cells are air-starved, and in response to determining that the one or more of the plurality of zinc-air cells are air-starved, generate a power cut-off for a period of time that ceases electrical power output to the device.

A zinc-air charger having a case defining a plurality of pass core vents, and an internal case cavity; a plurality of zinc-air cells that are electrically coupled and disposed within the internal case cavity; a coupling plug configured to couple with and provide electrical power generated by the plurality of zinc-air cells to a device that is separate from the zinc-air charger; and a system configured to: output electrical power generated by the plurality of zinc-air cells to the device; identify a state of the plurality of zinc-air cells, determine, based at least in part on the identified state of the plurality of zinc-air cells, that one or more of the plurality of zinc-air cells are air-starved, and in response to determining that the one or more of the plurality of zinc-air cells are air-starved, generate a power cut-off for a period of time that ceases electrical power output to the device.

A battery holding device includes a battery holding member and a plate. The plate houses the battery holding member. The battery holding member includes a fastener and a battery holder. The fastener is fixed to the plate. The battery holder holds a battery, and is arranged at a position where the battery holder does not contact the plate.

A battery holding device includes a battery holding member and a plate. The plate houses the battery holding member. The battery holding member includes a fastener and a battery holder. The fastener is fixed to the plate. The battery holder holds a battery, and is arranged at a position where the battery holder does not contact the plate.

Disclosed is a cleavage flaking type lithium ion battery and a preparation method thereof. The cleavage flaking type lithium ion battery includes a battery shell and a winding electric core; the winding electric core includes a battery pole piece which includes a coating region and a blank region adjacent to the coating region coated with an electrode material, and the blank region is directly connected with the battery shell or with a metal contact on the battery shell. The battery pole piece is directly connected with the battery shell, which omits the traditional process in which pole pieces need to be overlaid and welded with tabs, thereby effectively simplifying the process flow, improving the automation degree of production, avoiding a risk of short-circuit firing caused by a fact that a diaphragm is punctured when the tabs are wrapped in the pole pieces and improving the safety performance of the battery.

Disclosed is an invention related to a card type smart key. The disclosed card type smart key includes a key main body part having a circuit substrate installed thereinside, a battery cover part having a battery mounted thereon and inserted into an insertion part formed in the key main body part, and a contact part installed in the key main body part so as to be in contact with the battery and having elastic restoration force in the battery side direction.

Disclosed is an invention related to a card type smart key. The disclosed card type smart key includes a key main body part having a circuit substrate installed thereinside, a battery cover part having a battery mounted thereon and inserted into an insertion part formed in the key main body part, and a contact part installed in the key main body part so as to be in contact with the battery and having elastic restoration force in the battery side direction.