Provided is an electronic device including a first housing, a second housing, a flexible housing including a hinge structure, a first printed circuit board disposed in the first housing, a second printed circuit board disposed in the first housing, laminated on one surface of the first printed circuit board facing a second direction and including a connector on one surface facing the second direction, a flexible printed circuit board connected with the connector, extending from the second housing through the hinge structure to the first housing, a rib supporting the first printed circuit board, disposed between the first printed circuit board and a first surface, including a through hole through which part of the flexible printed circuit board passes, extending in the second direction from one end, and at least one sealing member sealing a space between the through hole and part of the flexible printed circuit board.

The present disclosure provides a battery protection circuit board and a preparation method thereof. The battery protection circuit board includes a first battery protection board and a second battery protection board, a hardness of the first battery protection board being greater than a hardness of the second battery protection board. The soldering method includes: preparing a first to-be-soldered region of the first battery protection board and preparing a second to-be-soldered region of the second battery protection board; preparing a first copper paste in the first to-be-soldered region of the first battery protection board and preparing a second copper paste in the second to-be-soldered region of the second battery protection board; and bonding the first to-be-soldered region of the first battery protection board and the second to-be-soldered region of the second battery protection board by the first copper paste and the second copper paste.

A smart key for a vehicle includes: a base part; a first terminal part coupled to the base part and which makes contact with a first electrode of a battery so as to be electrically connected to the battery; a second terminal part disposed facing the first terminal part to form an insertion part where the battery is inserted and which makes contact with a second electrode of the battery to be electrically connected to the battery; a separation prevention part which extends from the second terminal to the base part and which abuts the side surface of the battery to prevent the battery from separating from the insertion part; and a pressure applying part which is connected to the second terminal part so as to enable contact with the battery and which maintains contact between the battery and the separation prevention part by an elastic restoring force.

A battery module, a vehicle, and a method of manufacturing a battery module, the battery module including a housing accommodating a plurality of secondary batteries; and a thermoelectric element assembly on the housing and in contact with the plurality of secondary batteries through at least one contact opening in the housing, the thermoelectric element assembly being configured to heat or cool the plurality of secondary batteries.

An electronic device is provided. The electronic device includes a first printed circuit board having a first surface and a second surface, a second printed circuit board having a first surface and a second surface disposed to be spaced apart from the first printed circuit board, a battery disposed between the first printed circuit board and the second printed circuit board, a first connection member to electrically connect the first printed circuit board and the second printed circuit board, and a second connection member to electrically connect the first printed circuit board and the second printed circuit board, wherein the first connection member and the second connection member may be arranged to at least partially overlap at a portion passing by the battery.

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.

A battery module is disclosed, which includes: a multiplicity of battery cells; a printed circuit board with a first series-connector with a first pad area and a second pad area, and a second series-connector with a third pad area and a fourth pad area; a cross-connector, which connects the first series-connector between the first pad area and the second pad area with the second series-connector between the third pad area and the fourth pad area; and a sensor configured to detect a cross-current at the cross-connector. The first contact electrode of a first battery cell is connected with the first pad area. The second contact electrode of a second battery cell is connected with the second pad area. The first contact electrode of a third battery cell is connected with the third pad area. The second contact electrode of a fourth battery cell is connected with the fourth pad area.

An electronic device includes a middle frame, a first flexible printed circuit FPC, a second FPC and a battery. Projections of the first FPC and the second FPC on the middle frame have a first overlapping region. The first overlapping region is located inside a projection of the battery on the middle frame and is far away from an edge of the battery. A first through hole is disposed on the middle frame. The first overlapping region is located in the first through hole. The electronic device provided in this application can implement reduction of an overall thickness, so that the electronic device provides better user experience.

The present disclosure is directed to a flexible transcutaneous nerve stimulation device for reducing urinary urgency. The devices described herein are designed to enable proper placement by a user to stimulate the user's tibial nerve, while maintaining user comfort and device functionality during wear.

A circuit board and a battery connection module are provided. The circuit board has an insulating substrate and a plurality of circuit traces provided thereto. At least one of the traces is provided with a fuse unit. The fuse unit has a main fuse and at least one spare fuse. The main fuse has two main trace connection end portions respectively positioned at two ends of the main fuse and connected to the trace and a main fuse section connected between the two main trace connection end portions. The spare fuse has two trace connection end portions respectively positioned at two ends of the spare fuse and a fuse section connected between the two trace connection end portions, the fuse section and the main fuse section are spaced apart from each other and arranged side by side, and at least one of the two trace connection end portions is not connected with the trace so as to form an electrical disconnection with the trace, and after the main fuse section forms an electrical disconnection, the two trace connection end portions are connected to the trace so that a current conductive path is formed by the spare fuse and the trace.