LG Energy Solution Patente

Example embodiments provide a battery pack. The battery pack includes: a lower frame including a base plate and side walls; first to fourth battery cell assemblies provided on the lower frame and including a plurality of battery cells; a first cross beam interposed between the first and second battery cell assemblies, in which the first and second battery cells are spaced apart from each other in a first direction; a second cross beam interposed between the third and fourth battery cell assemblies, in which the third and fourth battery cell assemblies are spaced apart from the first and second battery cell assemblies in a second direction perpendicular to the first direction; first fixing parts coupled to the first cross beam and spaced apart from the base plate; and second fixing parts coupled to the first fixing parts.

The present invention provides a structure of a battery pack including: a plurality of battery modules arranged in widthwise direction; a pack frame having a side wall and a bottom plate and accommodating the plurality of battery modules;a heat pipe in contact with a lower outer surface of the plurality of battery modules and extending in lengthwise direction; and a cooling channel comprising: a coolant path where a coolant circulates, the coolant path being connected to one lengthwise end of the heat pipe; an inlet where the coolant enters; and an outlet where the coolant exits.

The present invention provides a lithium secondary battery having improved high-temperature cycle characteristics. Specifically, the present invention relates to a lithium secondary battery comprising a positive electrode, a negative electrode, a separator, and an electrolyte, and provides a lithium secondary battery wherein: the positive electrode comprises lithium iron phosphate as a positive electrode active material; the loading amount of the positive electrode is 32 mg/cm<2> to 60 mg/cm<2>; the electrolyte comprises a lithium salt, a first organic solvent, a second organic solvent, a first additive, and a second additive; the first organic solvent is a cyclic lactone compound; the second organic solvent is a carbonate organic solvent; the first additive is lithium nitrate (LiNO<3>); and the second additive is a sulfonylimide compound.

A battery module according to the present disclosure includes a secondary battery including an electrode lead, a module case configured to accommodate the secondary battery, the module case including a mesh portion having a mesh shape, and a refractory paint layer applied to the mesh portion, wherein the refractory paint layer foams by heat of a predetermined temperature or more.

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The present disclosure relates to an electrode and a secondary battery that can secure electrodeposition/desorption stability of lithium and prevent lithium dendrite formation and internal short circuit in lithium secondary battery. The electrode for an anode-free battery may include: an anode current collector; and an anode protective layer located on the anode current collector, wherein the anode protective layer comprises oxide-based solid electrolyte particles.

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A battery management apparatus according to some embodiments disclosed herein includes a sensor configured to collect battery data from a management target battery and a controller configured to extract, from the battery data, a dataset regarding charging/discharging rate and a voltage for each of a plurality of reference state of charge (SOC) values, generate a first profile of a voltage with respect to a charging/discharging rate by performing fitting on the dataset at each reference SOC value, generate a second profile of a voltage with respect to an SOC for each of a plurality of charging/discharging rates based on the first profile at each reference SOC value, and estimate a state of the management target battery based on a plurality of second profiles corresponding to the plurality of charging/discharging rates.

The present invention relates to a method and device for generating a three-dimensional electrode structure, and a method and device for calculating a morphological parameter of the three-dimensional electrode structure generated thereby. A method for generating a three-dimensional electrode structure according to an exemplary embodiment of the present invention may include a coating process step of, by a coating process simulator, determining sizes of a domain and a voxel based on a design parameter input for the three-dimensional electrode structure and generating an active material, a conductive additive and binder (CBD), and a current collector in the domain using the design parameter; and a calendaring process step of, by a calendaring process simulator, simulating a rolling process for the domain using a mechanical parameter input for the three-dimensional electrode structure and correcting a structural deformation error of the rolled domain.

A sealing apparatus according to an embodiment of the present disclosure is configured to seal a secondary battery including an electrode assembly, an outer packaging having an internal space for accommodating the electrode assembly and an outer packaging opening through which the internal space is in communication with an outside, and a cover member configured to sealably cover the outer packaging opening of the outer packaging, wherein the sealing apparatus seals the outer packaging and the cover member of the secondary battery, the sealing apparatus including an edge sealing unit configured to seal a plurality of edges between adjacent sealing surfaces among a plurality of sealing surfaces of the outer packaging.

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The present invention provides a structure of a battery module including: a cell laminate including: a plurality of battery cells laminated in widthwise direction; and at least one barrier member interposed between and laminated together with the plurality of battery cells in widthwise direction; and a housing accommodating the cell laminate, wherein each of the at least one barrier member includes a metal layer and insulating layers provided at two widthwise ends of the metal layer, respectively, and a thickness of each of the insulating layers is greater than that of the metal layer.

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The present disclosure relates to a battery module and a battery pack including the same, and a battery module according to one aspect of the present disclosure may include a battery cell including a cell body and a first electrode lead and a second electrode lead provided on one side and the other side of the cell body, respectively; a first voltage measuring member and a second voltage measuring member electrically connected to the first electrode lead and the second electrode lead, respectively; and a temperature measuring member coupled to the first electrode lead to form a thermocouple with the first voltage measuring member.

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The present disclosure relates to a battery module including: a cell stack including a plurality of battery cells; a module case configured to accommodate the cell stack; and a thermally conductive layer provided between the module case and the cell stack and configured so that bonding strength varies from the outside to the inside.

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A cooling unit for a secondary battery according to an embodiment of the present disclosure may cool a folded terrace portion of a pouch-type secondary battery. The cooling unit for the secondary battery may include a main body, wherein at least part of the main body curves or bends in a direction surrounding the folded terrace portion; and a plurality of spray units disposed at an inner surface of the main body and configured to spray gas toward the folded terrace portion.

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Disclosed is a battery pack, which includes a cell array structure including a plurality of battery cells and a plurality of cooling tubes provided between the plurality of battery cells; and a pack case configured to accommodate the cell array structure and having a cooling medium channel in communication with the plurality of cooling tubes.

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A battery management apparatus according to an embodiment disclosed herein includes a first communication unit configured to broadcast a wide-area signal for communication with a plurality of slave battery management systems (BMSs) to the plurality of slave BMSs, a second communication unit configured to transmit a direct signal for direction communication with a specific slave BMS among the plurality of slave BMSs to the specific slave BMS, and a controller configured to control operations of the first communication unit and the second communication unit.

The present invention relates to a separator including a substrate layer; and a porous coating layer positioned on one side or both sides of the substrate layer, and containing a first inorganic particle, a second inorganic particle, and an acrylic-based binder, wherein a ratio of an average particle diameter (D<50>) of the second inorganic particle to an average particle diameter (D<50>) of the first inorganic particle is 1.4 to 2.0, an amount of the first inorganic particle is greater than an amount of the second inorganic particle on the basis of a total weight of the porous coating layer, and the porous coating layer has a thickness of 1.2 µm to 2.0 µm.

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