A battery includes a stacked arrangement of electrochemical cells. Each electrochemical cell is free of a cell housing and includes a bipolar plate having a substrate, a first active material layer formed on a first surface of the substrate, and a second active material layer formed on a second surface of the substrate. Each cell includes a solid electrolyte layer that encapsulates at least one of the active material layers, and an edge insulating device that is disposed between the peripheral edges of the substrates of each pair of adjacent cells. Within each cell, an elastic seal is provided between the edge insulating device and the first surface of one cell or the solid electrolyte layer of an adjacent cell.

A power storage device includes a power storage module, a conductive plate, and a sealing member. The power storage module includes an electrode laminate and a sealing body. The sealing body includes a plurality of resin portions. Metal plates at laminate ends of the electrode laminate each have an exposed surface exposed from the resin portion. The exposed surface includes a contact region and a non-contact region. The sealing member includes a first sealing portion. The first sealing portion is provided along an inner edge of the resin portion to be in contact with the resin portion. The first sealing portion adheres to the conductive plate and the non-contact region and fills a portion between the conductive plate and the non-contact region. The first sealing portion seals a portion between the conductive plate and the exposed surface.

A power storage module 4 includes an electrode laminate 11 including a laminate of a plurality of bipolar electrodes 14 and a negative terminal electrode 18 disposed on one end side of the laminate in a laminating direction D, a sealing body 12 provided to surround a side surface 11a of the electrode laminate 11 and sealing an internal space V formed between electrodes adjacent to each other, and an electrolytic solution containing an alkaline solution that is housed in the internal space V, both surfaces of a metal plate 15 of the negative terminal electrode 18 are bonded to the sealing body 12, and a first surplus space VB surrounded by the sealing body 12 and the metal plate 15 of the negative terminal electrode 18 is present.

Provided are a partial power generation element configured by a single laminate body in which a bipolar electrode is laminated, or a multi-layer laminate body in which a plurality of the single laminate bodies is laminated; and a positive electrode normal electrode and negative electrode normal electrode, in which the partial power generation element configures a serial partial power generation element in which the single laminate body which is a constituent element of the multi-layer laminate body is laminated between the positive electrode normal electrode and negative electrode normal electrode with an orientation of polarity configuring a serial connection, and between the positive electrode collector electrode and two negative electrode normal electrodes corresponding thereto, the serial partial power generation element joins with reverse polarity sandwiching the positive electrode collector electrode to configure a parallel connection body by connecting in parallel the serial partial power generation elements between the positive electrode collector electrode and two negative electrode normal electrodes.

The present invention provide a non-aqueous electrolyte for use in static or non-flowing rechargeable electrochemical cells or batteries, wherein the electrolyte comprises a first deep eutectic solvent comprises a zinc salt, a second deep eutectic solvent comprising one or more quaternary ammonium salts, and a hydrogen bond donor. Another aspect of the present invention also provides a non-flowing rechargeable electrochemical cell that employs the non-aqueous electrolyte of the present invention.

Disclosed is a bipolar battery with which thermal deterioration of the electrode body due to the generation of heat of tabs can be suppressed. The bipolar battery of the present disclosure includes a first member, a second member, and a laminate electrode body arranged therebetween, wherein the laminate electrode body includes a first current collector constituting a lamination direction end surface, a second current collector constituting the other lamination direction end surface, at least one bipolar current collector arranged between the first current collector and the second current collector, and a plurality of power generating elements which are electrically connected in series via the bipolar current collector between the first current collector and the second current collector, the first current collector is arranged between the first member and the bipolar current collector, the second current collector is arranged between the second member and the bipolar current collector, the first current collector has a first tab, the second current collector has a second tab, an amount of heat generated by the first tab during energization of the battery is greater than an amount of heat generated by the second tab, the first member is a cooling member for cooling the first current collector, and a cooling performance of the first member is greater than a cooling performance of the second member.

A bipolar battery having a solid ionically conductive polymer material as its electrolyte enabling high voltage discharge.

A battery is provided which includes a first power generating element, a second power generating element, and a first adhesion layer adhering the first power generating element to the second power generating element. A first positive electrode collector of the first power generating element and a second negative electrode collector of the second power generating element face each other with (i.e., via) the first adhesion layer. Between the first positive electrode collector and the second negative electrode collector, the first adhesion layer is disposed in a region forming a first positive electrode active material layer or a region forming a second negative electrode active material layer, whichever is smaller. The first positive electrode collector and the second negative electrode collector are not in contact with each other in a region in which the first positive electrode active material layer and the second negative electrode active material layer face each other.

A pressure control valve structure includes a wall portion having a plurality of communication holes communicating with their associated internal spaces, a plurality of projections protruding outwardly from a wall surface of the wall portion so as to surround their associated communication holes, a plurality of elastic valve bodies closing their associated communication holes in contact with the projections, an outer peripheral wall portion protruding from the wall surface so as to surround the plurality of projections collectively, and a cover made of a resin and fixed to the outer peripheral wall portion, the cover compressing the elastic valve bodies towards their associated projections. The cover has a thick-walled portion where the cover is made partially thick in an outer surface of the cover.

A pressure control valve structure includes a wall portion having a plurality of communication holes communicating with the internal space, a plurality of tubular portions surrounding the communication holes and extending outwardly from a wall surface of the wall portion as a proximal end, an elastic valve body disposed in each of the tubular portions and having a first end surface and a second surface opposite from the first surface, an outer peripheral wall surrounding the plurality of tubular portions collectively, and a cover fixed to the outer peripheral wall. The tubular portions are spaced from the cover. The tubular portions has an inner wall surface that includes an inclined surface that is inclined downwardly in a gravity direction from the proximal end of the tubular portion to a distal end of the tubular portion with a compression direction of the elastic valve body set extending horizontally.