The present invention provides a power storage apparatus, in which an operation cost and a maintenance cost are not increased, and the temperature of the inside is appropriately maintained, and which is not easily affected by outside air such as salt damage. A battery chamber is formed inside a…
The system (1) has an electro-chemical storage device (100) with an anode chamber (11) and a cathode chamber (21). The anode chamber is disconnected from cathode chamber by ion-conductive solid electrolyte (30). The anode chamber is limited to one side partially through solid electrolyte and…
A module battery is housed in a module battery housing rack. In the module battery, an electric cell is housed in a container. The electric cell is for a sodium-sulfur battery. The container is provided with a high thermal conductive wall having a relatively high thermal conductivity and a low…
An electrochemical cell (10) is proposed, having at least one liquid electrode (20) with a variable liquid level (h). The cell includes a bypass system (30) for a charging current, which is adapted for bypassing a percentage of a charging current around the cell, wherein the percentage of the…
Provided are a control apparatus for a secondary battery and a control method for a secondary battery, which suppress decreases in released power and absorbed power. When a power storage device is requested to release power, a limit for power supply to a power consuming body is set relatively…
Provided is a battery control device, in which when correction of a calculated value of a discharge capacity is necessary, the calculated value of the discharge capacity is corrected and an unnecessary correction of the calculated value of the discharge capacity is not made. A power storage device…
A number (uo) of healthy strings of one block in a sodium-sulfur battery is determined according to expression (1), and a failure of the sodium-sulfur battery is detected on the basis of the determination of the value of the uo. This method makes it possible to properly determine a failure of the…
It is determined that a drop in the capacity of a sodium-sulfur battery has proceeded to an abnormal level when both the following expression (1) and expression (2) hold. Qe - Qn ¥ K1 ··· (1) where Qe: abnormal block depth of discharge; Qn: normal block depth of discharge; and K1: block abnormality…
A temperature increasing method for a sodium-sulfur battery includes three or more temperature gradients, and inflection points of 90±5°C and 150±5°C at which the temperature gradient changes, and the temperature gradient in a section from 90±5°C to 150±5°C is 5°C/h or less, whereby it is possible…
In a method for controlling a sodium-sulfur battery, a time of correcting or resetting a depth of discharge of the sodium-sulfur battery is determined within a predetermined period based on weather information, and the depth of discharge of the sodium-sulfur battery is corrected or reset in the…
A plurality of sodium-sulfur batteries are divided into a plurality of groups. Power to be input or output, which is assigned to all sodium-sulfur batteries in order to compensate for fluctuations of output power of a power generation device, is distributed to each group. The plurality of…
When charge power or discharge power of each individual sodium-sulfur battery included in a plurality of sodium-sulfur batteries becomes 1/n (n is a natural number) or less of a rated output, individual sodium-sulfur batteries are sequentially stopped. This prevents the discharge power (or the…
A remaining battery level of each individual sodium-sulfur battery constituting a plurality of sodium-sulfur batteries is managed, a remaining battery level target value common to all sodium-sulfur batteries is set, and input/output power distributed to each individual sodium-sulfur battery is…
A method for controlling a plurality of sodium-sulfur batteries that, in an interconnected system in which a power generation device that fluctuates in output and an electric power storage-compensation device are combined to supply power to an electric power system, are each included in the…
A secondary battery power control method controls power discharged from a secondary battery included in an interconnected system that supplies power to a power system, the interconnected system including a power generator that changes in output power, and an electric power storage-compensation…
The present invention pertains to solid composite cathodes which comprise (a) an electroactive sulfur-containing cathode material which, in its oxydized state, comprises a polysulfide moiety of the formula, -S-, wherein m is an integer from 3 to 10; and (b) a non-electroactive particulate material…
A control system for a sodium-sulfur battery, which is composed of a plurality of battery modules connected in series, includes a control device having at least a temperature measuring unit for measuring a temperature of each battery module, a voltage measuring unit for measuring a voltage thereof…
A current collector of positive electrode enabling a NaS battery to be excellent in the charge recovery characteristic and low in internal resistance is provided, which collector has a high resistance layer formed by needle-punching glass fibers with 5 to 15 mu m fiber diameters into a felt…