A method is used for a pair of bonding composite materials that are each provided with a melting material and a heat-resistant material. Each heat-resistant material includes a heat-resistant member and a binder member. The ceramic separators have ceramic layers that face each other and that are bonded. An ultrasonic wave is applied to the composite materials while applying a pressure thereto with a processing member. Also heat is applied to the binder members with a heating member. Here, the heater heats the binder members to a temperature that is greater than or equal to the glass transition temperature of the binder members and less than the melting point of the binder members.

Provided are: an anode active material for a lithium ion secondary battery with which high initial efficiency and battery capacity can be maintained and excellent cycling characteristics are achieved; and a method for producing such an active material. The anode active material for a lithium ion secondary battery, the active material comprising a Si compound and a carbonaceous material or a carbonaceous material and graphite, is obtained by a method comprising the steps of: mixing a Si compound, a carbon precursor, and, as appropriate, graphite powder; performing granulation/compaction; pulverizing the mixture to form composite particles; firing the composite particles in an inert gas atmosphere; and subjecting the pulverized and conglobated composite powder or the fired powder to air classification.

Disclosed are battery management systems with control logic for battery state estimation (BSE), methods for making/using/assembling a battery cell with a reference electrode, and electric drive vehicles equipped with a traction battery pack and BSE capabilities. In an example, a battery cell assembly includes a battery housing with an electrolyte composition stored within the battery housing. The electrolyte composition transports ions between working electrodes. A first working (anode) electrode is attached to the battery housing in electrochemical contact with the electrolyte composition. Likewise, a second working (cathode) electrode is attached to the battery housing in electrochemical contact with the electrolyte composition. A reference electrode is interposed between the first and second working electrodes, placed in electrochemical contact with the electrolyte composition. The reference electrode and one or both working electrodes cooperate to output a half-cell voltage signal that is indicative of a battery state of the battery cell assembly.

The present disclosure includes a battery module that includes a housing having a stack of battery cells. Each battery cell of the stack of battery cells includes a terminal end having at least one cell terminal and a face oriented transverse to the terminal end. The battery module also includes adhesive tape disposed between a first face of a first battery cell of the stack of battery cells and a second face of a second battery cell of the stack of battery cells, and where the adhesive tape fixedly couples the first battery cell to the second battery cell, and where a first terminal end of the first battery cell is substantially aligned with a second terminal end of the second battery cell.

An embodiment is directed to a battery module mounting area of an energy storage system. The battery module mounting area includes a first set of battery module compartments arranged along a first longitudinal side of the battery module mounting area, and a second set of battery module compartments arranged along a second longitudinal side of the battery module mounting area. Each battery module compartment in the first and second sets of battery module compartments includes an insertion-side through which a battery module is configured to be inserted into the battery module compartment and/or removed from the battery module compartment. The insertion-side of each battery module compartment in the first and second sets of battery module compartments is configured to be closed via an insertion-side cover to form a battery housing with a closed compartment profile that is characterized by each battery module compartment being sealed from at least one other battery module compartment in the battery housing.

Disclosed herein is a battery pack configured to have a structure including a plate-shaped battery cell having electrode terminals formed at one side thereof including a sealed surplus part and a protection circuit module (PCM) mounted at the sealed surplus part, wherein each of the electrode terminals of the battery cell is made of a plate-shaped conductive member, the PCM includes a protection circuit board (PCB), a safety element electrically connected between one of the electrode terminals of the battery cell and the PCB or loaded on the PCB, an external input and output terminal electrically connected to a protection circuit of the PCB, and an electrically insulative module case in which the PCB and the safety element are mounted in a state in which the external input and output terminal extends outside, the module case includes a PCB receiving part open outward at one side thereof and at least one fixing part to mount the module case to the sealed surplus part of the battery cell, and the PCM is loaded on the sealed surplus part of the battery cell while being received in the module case in a state in which the PCM is electrically connected to the electrode terminals of the battery cell.

A method for manufacturing a bottomed cuboid battery container includes: forming a first member by folding one piece of a first flat sheet, the first member being constructed of a quadrilateral bottom surface and first paired side surfaces, the first paired side surfaces continuing from the bottom surface and being oppose each other; and forming the bottomed cuboid battery container by welding each of a second flat sheet and a third flat sheet to the first member such that the second flat sheet and the third flat sheet oppose each other and constitute second paired side surfaces. The second flat sheet and the first member are welded from one direction. The third flat sheet and the first member are welded from one direction.

Provided is a secondary battery which is small in size and in which current capacity per unit volume can be increased. The present invention provides a secondary battery including two cell units each including a charging layer between a first electrode layer and a second electrode layer, the two cell units being parallel-connected by juxtaposing and connecting a first electrode layer of one cell unit and a first electrode layer of the other cell unit or a second electrode layer of the one cell unit and a second electrode layer of the other cell unit, and by wire-connecting the second electrode layer of the one cell unit and the second electrode layer of the other cell unit or the first electrode layer of the one cell unit and the first electrode layer of the other cell unit.

A method for maintenance, repair and/or optimization of a battery. The battery has, as components, individual cells connected to one another in series and/or in parallel, having electrical terminal contacts which are connected to one another positively and/or firmly, directly or by cell connectors, forming an overlapping region, and/or a battery monitoring unit having a number of connection elements which are positively and/or firmly connected to the electrical terminal contacts and/or to the cell connectors, forming a further overlapping region. To exchange a component, the positive and/or firm connection of the component to be exchanged to at least one component not be exchanged is separated directly next to the overlapping region and a replacement component is connected positively and/or firmly to the overlapping regions of the at least one component not be exchanged by the electrical terminal contacts thereof or the connection elements thereof, forming a respectively new overlapping region.

The instant disclosure sets forth multiphase lithium-stuffed garnet electrolytes having secondary phase inclusions, wherein these secondary phase inclusions are material(s) which is/are not a cubic phase lithium-stuffed garnet but which is/are entrapped or enclosed within a lithium-stuffed garnet. When the secondary phase inclusions described herein are included in a lithium-stuffed garnet at 30-0.1 volume %, the inclusions stabilize the multiphase matrix and allow for improved sintering of the lithium-stuffed garnet. The electrolytes described herein, which include lithium-stuffed garnet with secondary phase inclusions, have an improved sinterability and density compared to phase pure cubic lithium-stuffed garnet having the formula Li.sub.7La.sub.3Zr.sub.2O.sub.12.