A position assurance apparatus, which is used for a connector assembly connected to a signal circuit are provided. The connector assembly comprises a first connector and a second connector, which are connected in pairs, wherein the first connector is connected to the signal circuit, and the second connector is inserted in the first connector. The position assurance apparatus comprises a first connecting portion and a second connecting portion, which are electrically connected to each other. The first connecting portion and the second connecting portion are configured to be electrically connected to the signal circuit by means of the first connector, so as to turn on the signal circuit when the first connector and the second connector are inserted in place.

An electrode assembly includes a first electrode; a second electrode; and a separator, the first electrode, the second electrode, and the separator wound about an axis defining a core and an outer circumference of the electrode assembly. The first electrode has a pair of first sides and a pair of second sides, a first portion extending between the pair of first sides, and a second portion extending between the pair of first sides, the first portion being coated with an active material, and at least a part of the second portion includes an electrode tab. The second portion includes a first part adjacent to the core of the electrode assembly, a second part adjacent to the outer circumference of the electrode assembly, and a third part between the first part and the second part. The first or second part has a smaller height than the third part.

To provide a battery that can prevent a gap from being generated at a joined portion to prevent structural reliability from being reduced, the battery includes: a battery element that is a hexahedron as a whole; and a package including a laminate sheet and side face members, the battery element being sealed in the package, the laminate sheet covering four faces of the hexahedron of the battery element, having at least one joined portion of end parts thereof to form a tube, the side face members facing other two faces of the hexahedron of the battery element, and being arranged to cover openings of the tube of the laminate sheet, wherein each of the side face members is a hexahedron as a whole, and has a protrusion at a portion thereof which is located at the joined portion of the laminate sheet.

To provide a battery that can prevent a gap from being generated at a joined portion to prevent structural reliability from being reduced, the battery includes: a battery element that is a hexahedron as a whole; and a package including a laminate sheet and side face members, the battery element being sealed in the package, the laminate sheet covering four faces of the hexahedron of the battery element, having at least one joined portion of end parts thereof to form a tube, the side face members facing other two faces of the hexahedron of the battery element, and being arranged to cover openings of the tube of the laminate sheet, wherein each of the side face members is a hexahedron as a whole, and has a protrusion at a portion thereof which is located at the joined portion of the laminate sheet.

A terminal-equipped case member having an external terminal for electrically connecting an external device, which is fixed to a case body for housing an electronic component or a case member constituting a case lid attached to the case body, includes a base material made of metal that forms the case member; the external terminal inserted into a through hole formed through the base material; a sealing material formed of a first resin material that seals a gap between the external terminal and the base material; and a terminal adhesion layer. The external terminal and the sealing member are bonded to each other through the terminal adhesion layer formed of a second resin material with a higher adhesion to the external terminal than that of the first resin material.

A terminal-equipped case member having an external terminal for electrically connecting an external device, which is fixed to a case body for housing an electronic component or a case member constituting a case lid attached to the case body, includes a base material made of metal that forms the case member; the external terminal inserted into a through hole formed through the base material; a sealing material formed of a first resin material that seals a gap between the external terminal and the base material; and a terminal adhesion layer. The external terminal and the sealing member are bonded to each other through the terminal adhesion layer formed of a second resin material with a higher adhesion to the external terminal than that of the first resin material.

A button battery, comprising a pole assembly unit which comprises a first winding core, a first tab, and a first current collector; the first winding core comprises a first electrode layer, a second electrode layer, and a first separator sandwiched between the adjacent first electrode layer and second electrode layer, the polarities of the first electrode layer and second electrode layer being opposite to each other. The button battery also comprises a battery housing, a battery cover, and an insulating sealing ring; the battery housing forms a sealed cavity with the battery cover by means of the sealing ring; an electrolyte is stored within the sealed cavity; the pole assembly unit is disposed within the sealed cavity; and the first electrode layer is electrically connected to the battery cover by the first tab, and the second electrode layer is electrically connected to the battery housing by the first current collector.

A button battery, comprising a pole assembly unit which comprises a first winding core, a first tab, and a first current collector; the first winding core comprises a first electrode layer, a second electrode layer, and a first separator sandwiched between the adjacent first electrode layer and second electrode layer, the polarities of the first electrode layer and second electrode layer being opposite to each other. The button battery also comprises a battery housing, a battery cover, and an insulating sealing ring; the battery housing forms a sealed cavity with the battery cover by means of the sealing ring; an electrolyte is stored within the sealed cavity; the pole assembly unit is disposed within the sealed cavity; and the first electrode layer is electrically connected to the battery cover by the first tab, and the second electrode layer is electrically connected to the battery housing by the first current collector.

A battery cell that includes grating for coupling to the tabs of the electrodes of the battery cell. Anode and cathode electrodes may be organized as electrode groups. The anode tabs of the anode electrodes of an electrode group may physically contact each other to form an anode tab group. The cathode tabs of the cathode electrodes of an electrode group may physically contact each other to form a cathode tab group. The anode tab group may be positioned through the opening between the bars of the anode grating. The cathode tab group may be positioned through the opening between the bars of the cathode grating. The anode grating and the cathode grating may mechanically and electrically couple to the anode terminal and the cathode terminal of the battery cell.

A battery cell that includes grating for coupling to the tabs of the electrodes of the battery cell. Anode and cathode electrodes may be organized as electrode groups. The anode tabs of the anode electrodes of an electrode group may physically contact each other to form an anode tab group. The cathode tabs of the cathode electrodes of an electrode group may physically contact each other to form a cathode tab group. The anode tab group may be positioned through the opening between the bars of the anode grating. The cathode tab group may be positioned through the opening between the bars of the cathode grating. The anode grating and the cathode grating may mechanically and electrically couple to the anode terminal and the cathode terminal of the battery cell.