Abstract: A battery pack has improved safety. The battery pack includes a battery module having at least one battery cell; and a thermal runaway suppression unit mounted to one side of the battery module and configured to form a positive pressure inside the battery module when an abnormal situation occurs in any one battery cell.

Abstract: A cooling member for cooling a battery cell includes an upper plate, a lower plate, and an in-out port for injecting cooling water into an inner space between the upper plate and the lower plate. The cooling member includes an indentation part formed by introducing the upper plate into the lower plate or introducing the lower plate into the upper plate. A first indentation part is formed in the edge part of the cooling member. A second indentation part is formed in the central part of the cooling member. A sealing pad is located between the upper plate and the lower plate that form the first indentation part.

Abstract: A battery pack includes a battery module assembly having at least one battery cell, a pack case configured to accommodate the battery module assembly, and a barrier unit provided on at least one side of the pack case, configured to discharge a vent gas in the pack case to the outside of the pack case and having at least one blocking baffle disposed obliquely to have a predetermined inclination angle.

Abstract: A battery module includes at least one battery cell, a module case accommodating the at least one battery cell, at least one leakage prevention pocket provided in the module case to prevent leakage of flame or spark in case of an abnormal situation of the at least one battery cell, and a fire extinguishing capsule unit provided to the at least one leakage prevention pocket and configured to discharge a fire extinguishing agent into the module case by the flame or spark in the event of the abnormal situation.

Abstract: A battery pack includes a battery cell stack in which a plurality of battery cells are stacked, a pack frame that houses the battery cell stack, a cooling member that is located on an upper side of the battery cell stack and contains a coolant water, and a foam pad that is located between the battery cell stack and the cooling member. At least one fragile part that breaks or melts at a predetermined temperature or pressure or higher is formed on a lower plate of the cooling member. The fragile part of the cooling member is opened, so that the moving path of the coolant water discharged toward the battery cell stack is guided by the foam pad.

Abstract: A battery system includes a plurality of battery packs; a duct configured to communicate with the inside of each of the plurality of battery packs; and a cooling fan connected to the duct and configured to perform both the forward rotation and reverse rotation.

Abstract: A battery pack includes a battery module including a battery cell stack in which a plurality of battery cells are stacked, a pack frame for accommodating the battery module, a heat sink located between the battery cell stack and the pack frame, and a cooling fin between the two battery cells adjacent to each other. The cooling fin comprises a body part in contact with the battery cell, and an extension part extending to the upper side (z-axis) of the battery cell stack and located adjacent to the heat sink. The extension part has a bent part formed by bending in a direction different from the upper side (z-axis).

Abstract: A battery module includes a plurality of cell assemblies including a plurality of secondary batteries; a module housing including an accommodation space configured to accommodate the plurality of cell assemblies; and a blocking member configured to, when a gas pressure more than a predetermined gas pressure or a heat more than a predetermined temperature is generated in at least some cell assemblies among the plurality of cell assemblies, block the generated gas or heat from moving to the other cell assemblies.

Abstract: A battery module includes a battery cell stack constituted by a plurality of stacked pouch-shaped battery cells, a battery module housing configured to receive the battery cell stack, and a heat dissipation member coupled to a portion of the battery module housing, wherein the heat dissipation member has a through-hole formed in a heat dissipation plate disposed so as to face the battery cell stack and a sealing member is added to the through-hole, and a method of manufacturing the heat dissipation member. It is possible to effectively prevent thermal runaway of a battery cell that has caught fire while minimizing an increase in volume of the battery module.

Abstract: A cooling member located in an upper part of a battery cell stack in which a plurality of battery cells are stacked includes an upper plate, a lower plate, and a coolant incorporated in an inner space between the upper plate and the lower plate. The lower plate includes a first part in which a fragile part is formed, and a second part in which the fragile part is not formed. A thickness value of the first part is smaller than a thickness value of the second part.

Abstract: A battery pack includes a battery module assembly having at least one battery cell, a pack case configured to accommodate the battery module assembly, and a barrier unit provided on at least one side of the pack case, configured to discharge a vent gas in the pack case to the outside of the pack case and having at least one blocking baffle disposed obliquely to have a predetermined inclination angle.

Abstract: A battery pack includes a plurality of battery modules each including one or more battery cells to store and release energy, each battery module further including an intake portion and an exhaust portion, an intake duct including an intake channel and communicating with the intake portion of each of the plurality of battery modules, and an exhaust duct including an exhaust channel and communicating with the exhaust portion of each of the plurality of battery modules. Each of the plurality of battery modules further includes an opening/closing member configured to close the intake portion when internal pressure increases.

Abstract: A method of mounting a bus-bar frame includes: forming a plurality of cell lead blocks and a battery cell stacked body by alternately stacking a cell lead block and at least one battery cell; disposing a top cover with respective ends on which a bus-bar frame is installed so as to cover the battery cell stacked body; removing the lead blocks from a space between the battery cell stacked body and the bus-bar frame; and installing the bus-bar frame on the battery cell stacked body by rotating the bus-bar frame. The alternately stacking of the cell lead block and the at least one battery cell includes positioning an electrode lead protruding from each battery cell between neighboring ones of the cell lead blocks.

Abstract: A battery module includes a sub-module stack formed by stacking a plurality of sub-modules including a cooling member having a coolant flow path and a plurality of battery cells disposed on both surfaces of the cooling member; and a pair of bus bar frame assemblies coupled to one side and the other side of the sub-module stack to electrically connect the plurality of battery cells.

Abstract: A battery pack is configured to improve safety by effectively suppressing heat transfer between battery modules in the present disclosure. A battery pack includes a plurality of battery modules each having one or more battery cells, configured to store and release energy, and stacked in at least one direction; a pack case provided on at least one side of the plurality of battery modules, covering at least a portion of the outside of the plurality of battery modules, and having one or more openings formed therein; and a melting member provided in the opening of the pack case to seal the opening and configured to open the opening by being melted by heat generated from one or more battery modules among the plurality of battery modules.

Abstract: A battery rack includes a plurality of battery modules, each including at least one battery cell, wherein each battery module has at least one venting hole; a rack case accommodating the plurality of battery modules; and a plurality of support brackets disposed in the rack case such that each support bracket supports each battery module and is in communication with the at least one venting hole.

Abstract: A battery pack includes a battery cell stack formed by a plurality of stacked battery cells, a battery module housing configured to wrap the other outer surfaces of the battery cell stack excluding a first surface and a second surface, from which electrode leads protrude, a water tank configured to supply a coolant to the battery cell or the battery module housing, and a battery pack case configured to receive a plurality of battery module housings. The battery pack case includes a pack case space portion located adjacent to the first surface and a crossbeam located adjacent to the second surface, whereby, when fire breaks out in the battery cell, it is possible to rapidly and accurately prevent spread of flames of the ignited battery cell.

Abstract: A battery module may include a cell assembly having a plurality of battery cells; a module case provided to accommodate the cell assembly and having an opening on at least one side; and an oxygen inflow blocking cover covering the opening. The oxygen inflow blocking cover may include two or more partition walls each having a vent hole, overlapping each other, provided to cover the opening, and configured such that gas is discharged to the outside of the module case through the vent hole when the gas is generated in the cell assembly; and a hole blocking member positioned between the partition walls and configured to block the vent hole by deforming its shape when heat is applied.

Abstract: A battery pack secures safety even when a high-temperature gas or the like is generated therein due to thermal runaway or the like. The battery pack includes a battery module having at least one battery cell and a module terminal; a pack case configured to cover at least a part of an outer side of the battery module and having a pack terminal on at least one side; and a safety bus bar connected between the module terminal and the pack terminal or between the module terminals to provide a power path and configured to block the power path by a venting gas discharged from the battery module.

Abstract: A battery pack includes a plurality of battery cell stacks, each battery cell stack including a plurality of battery cells; a battery pack case configured to receive the plurality of battery cell stacks, wherein the battery pack case includes a pack case space portion located adjacent to a first side of a first battery cell stack; and a beam located adjacent to a second side of the first battery cell stack; the battery pack case being hollow and configured to store a coolant; and an outlet in the battery pack case.