This application is directed to an electronic device powered by one or more rechargeable battery cells. The electronic device includes a first negative temperature coefficient (NTC) thermistor proximate to the battery cells, and an open capacitor coupled in parallel with the NTC thermistor. The open capacitor has an open area and two electrodes that are at least partially exposed via the open area and electrically isolated. The electronic device further includes a control circuit coupled to the NTC thermistor and the open capacitor. The control circuit is configured to detect a voltage drop across the NTC thermistor and the open capacitor if conductive liquid enters the open area of the capacitor and electrically connects the two electrodes that are at least partially exposed via the open area.

A protective device for an electronic component is connected to an interface and includes a compensation element connected in series with the electronic component. The compensation element has a positive temperature coefficient of its electrical resistance. The compensation element is connected to a pole or measuring contact of an electrical energy accumulator. The electronic component and the compensation element are thermally coupled to one another.

An aqueous battery system includes an electrode assembly, a recombination device, and a controller. The recombination device has a catalyst that combines hydrogen and oxygen produced by the electrode assembly to form water and generate heat via exothermic reaction. The controller, responsive to a detected temperature or change in temperature associated with the recombination device due to the heat, changes power supplied to the electrode assembly.

A battery system includes a plurality of battery cells connected in parallel. Each battery cell includes a positive and negative tab. The battery system also includes a plurality of thermal switch devices (e.g., temperature cut off (TCO) or positive temperature coefficient (PTC) devices). Each thermal switch device is electrically coupled to a respective cell. The battery system further includes a rigid-flex circuit board comprising a plurality of rigid regions. Each rigid region is physically and electrically connected to an adjacent rigid region by a respective flexible region. Each rigid region is electrically coupled to respective positive and negative tabs of a respective battery cell. Each thermal switch device prevents abnormal current flow (e.g., by limiting the flow of current at high temperatures) between a first battery cell that is coupled to the thermal switch device and a second battery cell that is adjacent to the first battery cell.

Disclosed is a battery module. The battery module includes a plurality of batteries, a thermal conduction plate, and a temperature sensing element. The plurality of batteries are arranged in a length direction. The thermal conduction plate is located between the adjacent batteries and fits the batteries. The temperature sensing element is in contact with the thermal conduction plate. In the battery module, the thermal conduction plate fits the batteries. Heat generated by the batteries is transferred to the thermal conduction plate. The temperature sensing element is in contact with the thermal conduction plate to acquire a temperature of the batteries. Because the temperature of the batteries that is acquired by the temperature sensing element via the thermal conduction plate is close to an actual temperature of the batteries, a deviation between the temperature acquired by the temperature sensing element and the actual temperature of the batteries can be reduced.

A secondary battery includes: an electrode assembly; a sheet-type exterior configured to accommodate the electrode assembly; and a plurality of temperature sensing parts provided adjacent to the exterior to sense a temperature of a plurality of areas, respectively, of the exterior, wherein at least one of the plurality of temperature sensing parts includes: a positive temperature coefficient (PTC) element; and a negative temperature coefficient (NTC) element.

An all-solid-state battery includes a laminated body in which a positive electrode layer, a solid electrolyte layer and a negative electrode layer are laminated, an outer package configured to enclose and seal in the laminated body, and an overcharge suppression part configured to be enclosed and sealed in the outer package together with the laminated body and be capable of short-circuiting a positive electrode collector of the positive electrode layer and a negative electrode collector of the negative electrode layer. The overcharge suppression part includes a first conductor extending from one of the positive electrode collector and the negative electrode collector, and a second conductor extending from another of the positive electrode collector and the negative electrode collector and separated from the first conductor. The first and second conductors are conducted by a state change of the laminated body.

An aqueous battery system includes an electrode assembly, a recombination device, and a controller. The recombination device has a catalyst that combines hydrogen and oxygen produced by the electrode assembly to form water and generate heat via exothermic reaction. The controller, responsive to a detected temperature or change in temperature associated with the recombination device due to the heat, changes power supplied to the electrode assembly.

A system for managing a battery removal from an electronic device is provided. The electronic device includes a battery interface including multiple battery coupling contacts that engage with battery contacts of the battery in an installed position of the battery. A battery removal detector is configured to detect, based on signals received via the battery interface, an ongoing battery removal process during which first battery contact(s) are disconnected from corresponding first interface contact(s) while second battery contact(s) remain connected with second battery coupling contact(s), and in response, to output a battery removal signal. The system also includes a controller that receives the battery removal signal and, still during the battery removal process, controls a memory device of the electronic device to prevent or complete a defined operation (e.g., writing of persistent storage keys) prior to completion of the battery removal process, to thereby prevent a corruption of the memory device.

A battery module is composed of a plurality of battery cells according to an embodiment of the present invention and includes one positive output terminal formed by connecting the plurality of battery cells, one negative output terminal formed by connecting the plurality of battery cells, a field effect transistor (FET) provided on a current path between the positive output terminal and an external device, a temperature information measurer for measuring temperature information of the plurality of battery cells, and a protection integrated circuit (IC) chip for controlling the FET.