A battery for a motor vehicle includes at least one cell assembly with a large number of battery cells, wherein the battery cells each have a cell housing with a degassing element for discharging a hot gas produced in the cell housing in the event of a fault, a battery housing with housing walls which enclose a receiving space for receiving the at least one cell assembly, and a deactivation device which is arranged in the receiving space of the battery housing and has at least one sleeve which is filled with a combustion-promoting agent, wherein the sleeve, when it is acted on by the hot gas discharged from at least one battery cell, is configured to release the combustion-promoting agent.

A battery for a motor vehicle includes at least one cell assembly with a large number of battery cells, wherein the battery cells each have a cell housing with a degassing element for discharging a hot gas produced in the cell housing in the event of a fault, a battery housing with housing walls which enclose a receiving space for receiving the at least one cell assembly, and a deactivation device which is arranged in the receiving space of the battery housing and has at least one sleeve which is filled with a combustion-promoting agent, wherein the sleeve, when it is acted on by the hot gas discharged from at least one battery cell, is configured to release the combustion-promoting agent.

Embodiments of this application provide a box, a battery, and an apparatus, and relate to the field of battery technologies. The box is provided with a discharge hole, and the discharge hole is configured to discharge, from inside the box, flame produced when thermal runaway occurs in a battery cell. The box is further provided with a fire extinguishing member that is configured to extinguish the flame for cooling when the flame passes through the discharge hole. In this application, the discharge hole and the fire extinguishing member are arranged in the box, so that when the flame produced when thermal runaway occurs in the battery cell passes through the discharge hole, the fire extinguishing member can release a fire extinguishing agent to extinguish the flame for cooling. This prevents the flame from being discharged from inside the box through the discharge hole, thereby improving safety performance of the battery.

Embodiments of this application provide a box, a battery, and an apparatus, and relate to the field of battery technologies. The box is provided with a discharge hole, and the discharge hole is configured to discharge, from inside the box, flame produced when thermal runaway occurs in a battery cell. The box is further provided with a fire extinguishing member that is configured to extinguish the flame for cooling when the flame passes through the discharge hole. In this application, the discharge hole and the fire extinguishing member are arranged in the box, so that when the flame produced when thermal runaway occurs in the battery cell passes through the discharge hole, the fire extinguishing member can release a fire extinguishing agent to extinguish the flame for cooling. This prevents the flame from being discharged from inside the box through the discharge hole, thereby improving safety performance of the battery.

A battery module includes at least one cell assembly including a plurality of secondary batteries, each of which has an electrode lead, a module housing having an inner space formed to accommodate the cell assembly therein, a bus bar assembly including at least one electrically conductive bus bar having a plate shape and configured to contact a portion of the electrode lead, and at least one electrically insulating bus bar frame to which the at least one bus bar is mounted, the at least one bus bar frame having a plurality of perforated holes through which the electrode leads of the plurality of secondary batteries passes and a flame-retardant sheet having a plate shape and located in close contact with an outer side of the bus bar to close the perforated hole.

A battery module includes at least one cell assembly including a plurality of secondary batteries, each of which has an electrode lead, a module housing having an inner space formed to accommodate the cell assembly therein, a bus bar assembly including at least one electrically conductive bus bar having a plate shape and configured to contact a portion of the electrode lead, and at least one electrically insulating bus bar frame to which the at least one bus bar is mounted, the at least one bus bar frame having a plurality of perforated holes through which the electrode leads of the plurality of secondary batteries passes and a flame-retardant sheet having a plate shape and located in close contact with an outer side of the bus bar to close the perforated hole.

Provided is a battery module including a case, a plurality of battery cells accommodated in the case, and a flame blocking member including a plurality of exhaust passages connecting an inside and an outside of the case together, and a partition wall part disposed between the plurality of exhaust passages.

A battery pack includes a plurality of battery modules, a case accommodating the plurality of battery modules therein and having at least one vent hole for discharging a gas formed therein to the outside, and an non-flammable member coupled to the vent hole and blocking movement of flames, wherein the non-flammable member includes a pipe-shaped body part coupled to the case to extend a gas discharge path and a flame blocking portion disposed inside the body part to lower a temperature of gas or flames passing through the inside of the body part.

A battery pack includes a plurality of battery modules, a case accommodating the plurality of battery modules therein and having at least one vent hole for discharging a gas formed therein to the outside, and an non-flammable member coupled to the vent hole and blocking movement of flames, wherein the non-flammable member includes a pipe-shaped body part coupled to the case to extend a gas discharge path and a flame blocking portion disposed inside the body part to lower a temperature of gas or flames passing through the inside of the body part.

A battery pack includes at least two battery modules arranged in one direction; and a fire extinguishing unit extinguisher having a fire extinguishing tank configured to contain a fire extinguishing agent therein, a pipe connected to the fire extinguishing tank to supply the fire extinguishing agent from the fire extinguishing tank to each of the at least two battery modules, a flow rate adjuster provided to the pipe and configured to adjust a feed flow rate of the fire extinguishing agent to be constant, and at least one valve configured to supply the fire extinguishing agent from the fire extinguishing tank to the battery module having an internal temperature rising over a predetermined temperature.