An electrical contact element for the electrical interconnection of battery cells for battery electric vehicles includes an electrically conductive base element that is able to make electrical contact with a first pole of a battery cell and one or more electrically conductive plug-on elements that project from the base element and are able to be bent in a temperature-dependent manner. The one or more plug-on elements, at a first temperature, assume a first bending position in which they are able to be plugged onto a second pole of an adjacent battery cell in order to produce an electrical plug connection. The one or more plug-on elements, at a second temperature that is higher than the first temperature, assume a second bending position in which the plug connection between the one or more plug-on elements and the second pole of the adjacent battery cell is released.

A gripper assembly for charging and discharging a secondary battery is provided. The gripper assembly includes a gripper body part configured to press an electrode lead of the secondary battery, a contact member coupled to one side of the gripper body, the contact member being configured to be pressed on a surface of the electrode lead, a safety block part located in the gripper body part, the safety block having a shape that is transformed when heat is transferred from the secondary battery to release a pressed state of the electrode lead by the gripper body part, and a heat conducting part configured to connect the secondary battery and the safety block part. A secondary battery charging and discharging including the gripper assembly is also provided.

The present disclosure relates to an electric vehicle battery pack (100), comprising a battery module (107) comprising a plurality of battery cells and a primary thermal regulation unit (104) coupled to the battery module (107). The primary thermal regulation unit (104) is configured to control the cooling and/or heating of said battery cells. Further, the battery pack (100) comprises an auxiliary thermal regulation unit (110) and a first thermal switch (120), the first thermal switch (120) having an open state and a closed state, wherein at said closed state the first thermal switch (120) connects the auxiliary thermal regulation unit (110) to a first thermal source (121) for heating or cooling said battery cells.

A battery safety apparatus includes a first switch of which one end is electrically connected to a battery and in which an open-closed state is determined depending on temperature; and a second switch electrically connected to the first switch in parallel and in which an open-closed state is determined depending on temperature, and an open-closed state threshold temperature of the first switch is different from an open-closed state threshold temperature of the second switch.

The circuit breaker is fabricated by an assembly step that makes a circuit breaker assembly with a moving contact metal plate, stationary contact metal plate, and bimetallic strip disposed in prescribed locations in an external case; and an anneal step that introduces the circuit breaker assembly made in the assembly step into an anneal oven, heats the circuit breaker assembly in the anneal oven and then cools it to anneal both the moving contact metal plate and the bimetallic strip and produce a heat-treated circuit breaker.

A battery thermal management system includes one or more bimetallic members moveable between a first position and a second position in response to a temperature change to selectively restrict flow of a coolant through a duct.

An aerosol generating device is provided. The aerosol generating device includes: a housing; a heater to heat an aerosol generating substance; a battery to supply power to the heater; and a temperature switch to switch an electrical connection between the heater and the battery, wherein the temperature switch includes a first switch terminal that is positioned to electrically couple to a first heater terminal of the heater and a second switch terminal that is positioned to electrically couple to a first battery terminal of the battery, wherein the temperature switch is bent in a direction when the temperature switch is heated to or above a first temperature, and wherein the first switch terminal is spaced apart from the first heater terminal after the temperature switch is bent in the direction to electrically open the coupling of the first switch terminal to the first heater terminal.

A cooling device for an energy storage, which has multiple cooling channels through which a coolant can flow and an adjusting device which includes at least one temperature-dependently adjustable adjusting element, through the adjustment of which a flow characteristic of at least one of the cooling channels can be changed. The cooling device is designed as an inter-cell cooling element for arrangement in an intermediate space between a first and a second storage cell of the energy storage. Through the displacement of the at least one adjusting element the flow characteristic of at least one first of the cooling channels can be changed with respect to a second of the cooling channels.

The present disclosure relates to a lithium secondary battery having improved safety. In the lithium secondary battery, the property of a bimetal bent in one direction at high temperature under an abnormal operating condition is used to cause a disconnection between an electrode tab and an electrode lead and to increase the internal resistance of a unit cell, thereby improving the safety of a lithium secondary battery.

A battery pack includes a plurality of battery modules, each having at least one unit cell, a case for accommodating the unit cell and a bus bar electrically connected to the unit cell, and a connecting bar for connecting battery modules adjacent to each other among the plurality of battery modules, wherein at least one of the connecting bars includes a first metal plate, a second metal plate spaced apart from the first metal plate, and a metal bridge configured to connect the first metal plate and the second metal plate and having a lower melting point than the metal plate. In this configuration, if an overcurrent flows at the battery pack, the connecting bar is easily broken, thereby ensuring safety of the battery pack in use.