A battery assembly includes a rack housing including a front opening portion and a rear opening portion open in opposite directions; and a plurality of battery modules accommodated in the rack housing. The battery assembly includes a dual rack housing capable of accommodating a plurality of battery modules through opposite sides, such as a front surface and a rear surface, and thus, may prevent short circuits when the battery modules accommodated in the rack housing are electrically connected.

Electric vehicles (EVs), power trains and control units and methods are provided. Power trains comprise a main fast-charging lithium ion battery (FC), configured to deliver power to the electric vehicle, a supercapacitor-emulating fast-charging lithium ion battery (SCeFC), configured to receive power and deliver power to the FC and/or to the EV, and a control unit. Both the FC and the SCeFC have anodes based on the same anode active material, and the SCeFC is configured to operate at high rates within a limited operation range of state of charge (SoC), maintained by the control unit, which is further configured to manage the FC and the SCeFC with respect to power delivery to and from the EV, respectively, and manage power delivery from the SCeFC to the FC according to specified criteria that minimize a depth of discharge and/or a number of cycles of the FC.

The present disclosure provides a cell and an electrochemical device. The cell comprises: a first electrode plate comprising a first current collector and a first active material layer, a second electrode plate comprising a second current collector and a second active material layer; a first electrode tab, a second electrode tab, a separator. The first current collector has a first surface uncoated region; the second current collector has a second surface uncoated region; the first electrode tab is provided on the first surface uncoated region, the second electrode tab is provided on the second surface uncoated region. The first electrode tab and/or the second electrode tab are enlarged in length and width. When the cell is subjected to a mechanical shock, the first electrode tab and the second electrode tab are deformed to puncture the separator therebetween, so the first current collector and the second current collector are electrically connected.

A packaging material for electrical storage devices which includes a base layer, a metal foil layer arranged on the base layer, and a sealant layer arranged on the metal foil layer. In the packaging material for electrical storage devices, the base layer includes at least one of a stretched polyester resin and a stretched polyamide resin, and the metal foil layer is an aluminum foil containing iron in the range of about 0.5 mass % or more to about 5.0 mass % or less. The packaging material has a tensile elongation of about 50% or more both the MD and TD directions of the base layer.

An electrode arrangement of a battery cell (10) comprising a positive electrode layer (2) and a negative electrode layer (3), which are separated from one another in an electrically insulating manner by a separator layer (4), wherein the positive electrode layer (2) forms a plurality of first contacting sections (21) formed in each case for an electrical contacting of the positive electrode layer (2) by a first current conductor (81), and the negative electrode layer (3) forms a plurality of second contacting sections (31) formed in each case for an electrical contacting of the negative electrode layer (3) by a second current conductor (82).

An energy storage apparatus includes an energy storage device, an outer covering. The energy storage apparatus further includes an external connection terminal having a connecting portion to which external equipment is connected; and a conductive member assembled to the external connection terminal, and electrically connected to the energy storage device. The external connection terminal and the conductive member assembled to each other are sealed by the outer covering, the connecting portion of the external connection terminal is exposed from the outer covering, and a portion of the external connection terminal other than the connecting portion is sealed by the outer covering.

A module carrier (20; 20; 30; 40; 50; 60; 70; 80; 90; 92; 94) for battery cells (100.sub.1, 100.sub.2, 100.sub.3), characterized by: a first carrier device (200.sub.1) and a second carrier device (200.sub.2), which is arranged opposite the first carrier device (200.sub.1), for carrying the battery cells (100.sub.1, 100.sub.2, 100.sub.3), and a first connecting device (300.sub.1) and a second connecting device (300.sub.2), which is arranged opposite the first connecting device (300.sub.1), in each case for connecting the first carrier device (200.sub.1) and the second carrier device (200.sub.2).

Disclosed is a battery having a positive terminal and a negative terminal and two electrical connection tongues, each tongue secured to one of the terminals thereof. The battery also includes at least one additional connection tongue secured to one of the terminals thereof, forming a radiating element with the electrical connection tongue secured to the same terminal of the battery.

The present invention provides a pouch-type secondary battery comprising: an electrode assembly having, repeatedly stacked therein, unit cells comprising a positive plate, a negative plate, and a separator positioned between the positive and negative plates, wherein the positive plate and negative plate are respectively provided with a positive electrode tab and a negative electrode tab, and the positive and negative electrode tabs each converge in a predetermined direction; and a pouch case for sealing the electrode assembly, the pouch-type secondary battery being characterized by taping in contact with the outer circumferential surface of the electrode assembly along the stacking thickness direction of the electrode assembly, at the end of the electrode assembly at the part where the tabs converge, thereby improving the safety of the pouch-type secondary battery.

A redox flow battery system includes a plurality of branch circuits electrically connecting a plurality of battery cell parts in parallel; a switching unit configured to switch conduction states of a closed loop in which the branch circuits are connected together; a circulation mechanism; a detection unit; a determination unit configured to determine whether or not a voltage difference between the open circuit voltages of the battery cell parts is more than a predetermined value; and a control unit configured to control a switching operation of the switching unit such that, when the determination unit determines the voltage difference to be more than the predetermined value, the closed loop is brought into a non-conducting state and, when the determination unit determines the voltage difference to be equal to or less than the predetermined value, the closed loop is brought into a conducting state.