公开(公告)号：US11355744B2

公开(公告)日：2022-06-07

申请号：US16288859

申请日：2019-02-28

Applicant: ELECTROVAYA INC.

Inventor： Rajshekar Das Gupta ,  Elmira Memarzadeh ,  Sankar Das Gupta ,  Bjorn Haugseter ,  Tom Henriksen ,  Lars Ole Valøen ,  Akhilesh Kumar Srivastava

IPC: H01M4/36 ,  H01M4/136 ,  H01M4/04 ,  H01M4/131 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/139 ,  H01M10/058 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/13915 ,  H01M4/1391

Abstract: The present disclosure relates generally to an electrode produced with a non-toxic solvent, resulting in a homogeneous mixture with uniform distributions of a conductive additive and a binder. Electrodes produced according to the present disclosure feature narrow binder particle size distribution, which distinguishes such electrodes from typical electrodes produced via a N-Methyl-Pyrrolidone (NMP) process. The resulting microstructure promotes the flow of current through the electrode and has an improved cycling stability due, in part, to the binder's and the conductive additive's ability to bind with the active material particles used in the fabrication of the electrode.

公开(公告)号：US10797277B2

公开(公告)日：2020-10-06

申请号：US15816226

申请日：2017-11-17

Applicant: ELECTROVAYA INC.

Inventor： Rakesh Bhola ,  Rajshekar Das Gupta ,  Sankar Das Gupta

IPC: H01M2/08 ,  H01M10/617 ,  H01M2/02 ,  H01M2/34

Abstract: A double-sealed thin film electrochemical pouch cell, comprising a cathode current collector, a cathode, an electrolyte, an anode, and an anode current collector, which is double-sealed by a first inner laminate layer forming a primary seal covered by a second outer polymer layer forming a secondary seal The second outer polymer layer comprises embedded particles to increase the thermal conductivity of the second outer polymer layer.

公开(公告)号：US20140342195A1

公开(公告)日：2014-11-20

申请号：US14370750

申请日：2013-01-07

Applicant: ELECTROVAYA INC.

Inventor： Rakesh Bhola ,  Rajshekar Das Gupta

IPC: H01M10/656 ,  H01M10/0525 ,  H01M10/663 ,  H01M10/653 ,  H01M10/613 ,  H01M10/647

CPC classification number: H01M10/613 ,  H01M2/0217 ,  H01M2/1077 ,  H01M10/0525 ,  H01M10/617 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6555 ,  H01M10/6556 ,  H01M10/6568 ,  H01M10/663 ,  H01M2002/0205 ,  H01M2220/10 ,  H01M2220/20 ,  Y02E60/122

Abstract: A battery module for receiving battery cells provides cooling through a cooling fluid. Chilled fluid travels first to the hottest part of the battery module and then continues to gradually less hot areas. As the chilled cooling fluid absorbs heat and travels to cooler parts of the battery module, the heat transfer between the fluid and the battery cells decreases because the temperature differential between the cells and cooling fluid decreases, providing a more even temperature distribution across the battery module. The cooling fluid may be contained in a conduit associated with one or more cooling plates. A plurality of slots provide a precise mechanical support for each battery cell, increasing the heat conduction from the cell to the battery module, protecting the battery module from vibration and decreasing contamination in case of thermal runaway or other damage to the cells.

Abstract translation: 用于接收电池单元的电池模块通过冷却流体提供冷却。 冷冻液体首先流向电池模块最热的部分，然后继续逐渐减少热区。 随着冷却的冷却流体吸收热量并传播到电池模块的较冷部分，由于电池和冷却流体之间的温差降低，流体和电池单元之间的热传递减小，从而在电池模块上提供更均匀的温度分布 。 冷却流体可以包含在与一个或多个冷却板相关联的导管中。 多个狭槽为每个电池单元提供精确的机械支撑，增加从电池到电池模块的热传导，保护电池模块免受振动，并在散热或对电池的其它损坏的情况下减少污染。

公开(公告)号：US20040175626A1

公开(公告)日：2004-09-09

申请号：US10799759

申请日：2004-03-15

Applicant: Electrovaya Inc.

Inventor： Sankar Dasgupta ,  Rakesh Bhola ,  James K. Jacobs

IPC: H01M010/40 ,  H01M002/16

CPC classification number: H01M2/1653 ,  H01M2/1686 ,  H01M10/052 ,  H01M10/0565

Abstract: The composite electrolyte for use in a thin plate rechargeable lithium battery comprises a porous or micro-porous inert, multi-layered polymer separator laminate which carries an adherent second polymer coating containing a dissociable lithium compound, and the multi-layered separator having adherent solid second polymer layer, is impregnated with an organic liquid containing another lithium salt. The porous or micro-porous separator laminate is made of multiple polymer layers, at least one of the member layers having melting temperature at least 20-C below the melting temperature of the other polymer member layers. The composite porous electrolyte is inserted between the electrodes of a rechargeable lithium battery. In another embodiment the porous polymer separator sheet has an adherent, dissociable lithium compound containing, solid second polymer layer on each of its major faces.

Abstract translation: 用于薄板可再充电锂电池的复合电解质包括多孔或微孔惰性多层聚合物隔板层合物，其携带含有可离解锂化合物的粘附的第二聚合物涂层，并且具有粘附固体秒的多层隔板 聚合物层用含有另一种锂盐的有机液体浸渍。 多孔或微孔隔层层压件由多个聚合物层制成，其中至少一个构件层的熔融温度低于其它聚合物构件层的熔融温度至少20℃。 复合多孔电解质插入可再充电锂电池的电极之间。 在另一个实施方案中，多孔聚合物隔离片在每个主要表面上具有粘附的可离解的锂化合物，其含有固体第二聚合物层。