Quallion LLC

Gs Yuasa Corporation

Mikito Nagata

Hisashi Tsukamoto

Hiroshi Nakahara

Clay Hajime Kishiyama

Hiroyuki Yumoto

Tiehua Piao

Andrew Szyszkowski

Ryo Tamaki

Phuong-Nghi Karen Lam

Wendy Fong

Shinya Kitano

Mikio Okada

Tetsuya Murai

Joanna Dodd

Hiroshi Mukai

Zhengcheng Zhang

Shigeo Komatsu

David L DeMuth

Aaron A Castillo

Michael Tomcsi

Alex Pal

Joice Yi

Zarui Sara Chikneyan

Michael Bowers

A lithium ion battery particularly configured to be able to discharge to a very low voltage, e.g. zero volts, without causing permanent damage to the battery. More particularly, the battery is configured to define a Zero Volt Crossing Potential (ZCP) which is lower than a Damage Potential Threshold (DPT).

Lithium ion battery capable of being discharged to zero volts

The battery includes an electrode having an active medium on a current collector. The active medium includes one or more active materials. The current collector includes or consists of carbon nanotubes. The electrical conductivity and weight of carbon nanotubes permit the weight of the battery to be reduced while the energy density and the power density of the battery are increased.

Battery having electrode with carbon current collector

The battery includes an electrolyte activating one or more cathodes and one or more anodes. The electrolyte includes one or more salts in a solvent. The solvent includes one or more organic solvents and one or more silanes and/or one or more siloxanes.

Battery having electrolyte with mixed solvent

The battery includes a solid electrolyte activating a positive electrode and a negative electrode. The electrolyte is a solid including a lithium ion conductive glass-ceramic. The negative electrode includes a buffer layer between a negative medium and the electrolyte. The negative medium includes one or more primary negative active materials. The buffer layer includes one or more secondary negative active materials that do not dissolve the lithium ion conductive glass-ceramic. The secondary negative active materials can have a redox potential greater than 0.5 V vs Li/Li+.

Battery having ceramic electrolyte

The electrochemical device includes a composite electrode. The composite electrode has a working electrode that includes a current collector. A reference electrode is immobilized on the current collector. The reference electrode includes a reference active medium on a reference current collector. The reference current collector is electrically insulated from the current collector. A top surface of the reference electrode is substantially flush with a top surface of the working electrode. The top surface of the reference electrode is a surface of the reference electrode that is substantially parallel to the reference current collector.

Incorportation of reference electrode into electrodes of electrochemical device

The battery pack includes a case that contains batteries and includes terminals through which power from the batteries can be accessed. The battery pack also includes a frame that defines battery receiving compartments that are each configured to receive one of the batteries with the frame immobilizing the position of each battery relative to the other batteries. The frame has a perimeter and at a portion of the frame perimeter serves as an outermost wall of the case.

Packaging with terminal for multiple battery power system

The battery includes a positive electrode having a first active material on a positive substrate. The first active material includes LiNiCoMOwherein M is chosen from the group consisting of Mn, Al, Mg, B, Ti, and Li, and wherein 0.5&#x2266;x&#x2266;1 and 0&#x2266;y&#x2266;0.3. The battery also includes a negative electrode having a second active material on a negative substrate. The second active material includes carbon. The negative electrode is susceptible to damage when a voltage exceeding a Damage Potential Threshold (DPT) is applied to the negative electrode. The DPT is lower than the maximum positive operating potential of the battery. The positive and negative electrodes define a Zero Volt Crossing Potential (ZCP) relative to a reference level when the voltage between the positive electrode and the negative electrode is zero. The positive electrode and the negative electrode are configured such that the value of the ZCP is less than the value of the DPT at a predetermined temperature.

Rechargeable lithium battery for tolerating discharge to zero volts

A lithium ion battery particularly configured to be able to discharge to a very low voltage, e.g. zero volts, without causing permanent damage to the battery. More particularly, the battery is configured to define a Zero Volt Crossing Potential (ZCP) which is lower than a Substrate Dissolution Potential (SDP) to thus avoid low voltage substrate damage.

Method for making a lithium ion battery dischargeable to zero volts

A battery includes an electrolyte activating one or more anodes and one or more cathodes. The electrolyte includes one or more salts in a solvent. One or more of the cathodes has a cathode medium that includes a lithium transition metal oxide as a cathode active material. The cathode medium also includes an inactive material that reacts with the electrolyte to form a passivation layer on the cathode medium. The passivation layer can include LiF. In some instances, the inactive material includes or consists of LiCO.

Battery with cathode having inactive materials

An electric storage battery and method of manufacture thereof characterized by a feed through pin () which is internally directly physically and electrically connected to an inner end of a positive electrode substrate (). A C-shaped mandrel () extends around the pin and substrate end enabling the pin/mandrel to be used during the manufacturing process as an arbor to facilitate winding layers of a spiral jellyroll electrode assembly. The pin additionally extends from the battery case () and in the final product constitutes one of the battery terminals () with the battery case comprising the other terminal. The electrolyte is injected through the open end of the case after the end cap is welded to the negative electrode but before sealing the end cap to the case. The electrolyte is preferably injected through the C-shaped mandrel to facilitate and speed filling.

Electric storage battery construction and method of manufacture

The battery has an electrode assembly that includes one or more anodes and one or more cathodes. A first liquid phase is positioned in an active region of the electrode assembly. The first liquid phase includes one or more first flame retardants and an electrolyte. A second liquid phase is outside of the active region and in contact with the first liquid phase. The second liquid phase includes one or more second flame retardants. A third liquid phase is outside of the active region and in contact with the second liquid phase. The third liquid phase includes one or more third flame retardants. The first liquid phase and/or the electrolyte have a density between the second liquid phase and the third liquid phase.

Flame retardant battery

An electric storage battery and method of manufacture thereof. Active material () is removed from both sides of the outer end () of the negative electrode () in a jellyroll () to allow room for adhesive tape () to secure the jellyroll.

An energy storage device, such as an electrical storage battery, having a unique terminal structure, sealing arrangement and an S-shaped mandrel for the electrode assembly. The battery generally includes a case in which an electrode assembly is dispose, and a cover provided with a fill hole and fill plug, and a terminal structure that forms a battery terminal. The terminal hole and the fill hole have counter bore structure to provide tighter sealing. A nickel layer is provided on the aluminum fill plug to facilitate electrical contact with the external circuit. A mandrel is provided for the rolled electrode assembly, and is electrically coupled to the terminal structure via a push-in tab inserted into a space in the S-shape of the mandrel.

Electric battery assembly and method of manufacture

A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating material, if it is a separator, is impregnated. The electricity-generating element is sealed in a battery case formed by a resin-laminated sheet comprising a metal layer as a barrier layer. Only a pair of lead terminals are drawn to the exterior of the battery case. The resin sheet comprises an oriented resin layer laminated on both surfaces of the metal layer. The inner heat-fused layers are opposed and heat-fused to each other. A molten and solidified resin mass is formed protruding from the inner end of the welded portion toward the inner space of the battery by 0.1 mm or more. Alternatively, the welded portion is formed thinner at the outer end thereof than at the inner end thereof.

Growing community of inventors

Valencia, CA, United States of America

Mikito Nagata