LG Energy Solution Patente

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Embodiments provide a battery cell assembly. The battery cell assembly includes a plurality of battery cells arranged in a first direction and an integrated circuit assembly covering the plurality of battery cells, in which the integrated circuit assembly includes an insulating frame including an insulating material and an integrated circuit mounted on the insulating frame and configured to be electrically connected to the plurality of battery cells, the insulating frame includes a first side facing the plurality of battery cells, and the first side is rib-free.

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A battery diagnosis device according to an embodiment disclosed in this document includes a data acquisition unit that acquires first data related to a voltage and capacity of a reference battery and second data related to a voltage and capacity of a target battery and a controller that fits the first data and the second data to each other so that a value of an objective function related to an error between the first data and the second data is minimized, and predicts a degree of degradation of the target battery based on the fitting result.

The present application relates to a negative electrode for a lithium secondary battery, a method for manufacturing a lithium secondary battery, and a lithium secondary battery including a negative electrode.

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There is provided a system operating apparatus and method for a battery formation system. The system operating apparatus according to the present disclosure includes a monitoring circuit to monitor a condition of a power supply facility, and a controller to, in response to a failure of the power supply facility being monitored, determine if it is necessary to modify at least one of first to m-th operation schedules of first to m-th chargers/dischargers included in a charging/discharging facility based on the first to m-th operation schedules and electric energy information of an energy storage apparatus, and stop each charger/discharger of the first to m-th chargers/dischargers associated with each operation schedule determined to need to be modified. m is a natural number of 2 or greater.

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A door lock device of an energy storage device for a door coupled to a main body of a case of the energy storage device may include a bracket disposed on the door, and a rod bar assembly movably disposed on the main body of the case, wherein the rod bar assembly may include a rod bar slidably disposed on the main body of the case, and a lock bracket disposed on the rod bar and configured to move together with the rod bar to restrain and release the bra cket disposed on the door.

The present disclosure relates to a welding method, a welded product, and a battery module, and the welding method according to the present disclosure includes a positioning process in which multiple base materials are positioned in overlapping with each other; and a welding process in which the multiple base materials are welded together to form a predetermined welding pattern, wherein the welding process welds the welding pattern in a form in which a plurality of spiral patterns are connected without overlapping.

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The present disclosure relates to a separator for an electrochemical device, a method for manufacturing the same, and an electrochemical device including the same, and more particularly, to a separator facing a dry electrode, wherein the separator is formed with a coating layer including a polymer binder and inorganic particles and does not include a polyolefin substrate, as well as a method for manufacturing the same and an electrochemical device including the same.

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Disclosed herein relates to a battery pack including: a battery cell assembly including a battery cell; a pack frame including a bottom frame supporting the battery cell assembly and a side frame coupled to the bottom frame, the bottom frame and the side frame defining an accommodation space for accommodating the battery cell assembly, the bottom frame including a first venting passage communicating with an external space; and a first venting device disposed within the first venting passage of the bottom frame, and configured to open and close an inner passage in response to pressure in the accommodation space of the pack frame.

The battery management apparatus according to an embodiment of the present disclosure includes a measuring unit configured to measure voltage and current of a battery bank during a charging process of the battery bank including a plurality of battery cells; and a control unit configured to estimate a first SOH of the battery bank based on a charging capacity obtained by integrating the measured current, determine a second SOH based on a time during which a circulating current flows through the plurality of battery cells from a charging end point of the battery bank, and estimate a SOH of the battery bank based on the first SOH and the second SOH.

A battery module according to an embodiment of the present disclosure includes: a module case including an upper frame having a venting hole formed therein; a plurality of battery cells stored in the module case; a protective cover including an opening/closing member provided at a position corresponding to the venting hole; and a middle cover located between the upper frame and the protective cover and including a venting unit provided between the opening/closing member and the venting hole.

The present disclosure relates to a battery module including: a cell assembly including a plurality of battery cells; and a module frame including a first frame and a second frame configured to be coupled to each other and store the cell assembly, wherein the first frame and the second frame may be configured to be rotationally symmetrical to each other.

Disclosed herein provides a battery pack including: a pack frame having an accommodation space; a battery cell assembly accommodated in the accommodation space of the pack frame and including a battery cell; and a venting device mounted on the pack frame, and configured to open and close an internal passage in response to pressure in the accommodation space of the pack frame, wherein the venting device is accommodated entirely within a venting passage of the pack frame provided between an inner wall and an outer wall of the pack frame.