An energy accumulator, in particular for a motor vehicle, has a secondary cell with two complementary electrodes, a separator spacing them apart, a cell housing which encloses the electrodes and the separator, and an electrolyte with which the cell housing is filled. In addition, hollow glass spheres are located within the cell housing, which are filled with a quantity of the electrolyte and/or an additive and which are in contact with the electrolyte accommodated in the cell housing.

Thin magnesium plate 101, which contains metal magnesium, is enclosed by separator 102, which is made of fluid-permeable material and is used as magnesium fuel assembly 100 in magnesium battery 120 in this invention. Magnesium fuel assembly 100 is enclosed from both sides by cathode 103 and provided with electrolyte retention unit 106, which stores electrolyte 107, at its bottom. When magnesium fuel assembly 100 is pushed down from above, separator 102 is impregnated with electrolyte 107, thereby initiating the battery reaction.

A power storage device includes a power storage module, a pair of current collector plates configured to be stacked to interpose the power storage module in a first direction that is vertical, a pair of insulating plates configured to be stacked to interpose the power storage module and the pair of current collector plates in the first direction; and a pair of restraint plates configured to be stacked to interpose the power storage module, the pair of current collector plates, and the pair of insulating plates in the first direction. The power storage module is configured to include an accommodation space that accommodates an electrolytic solution together with a power generation element. A pressure adjustment valve communicating with the accommodation space is provided on a side surface of the power storage module. The insulating plate arranged on a lower side in the first direction with respect to the power storage module is configured to include a main body portion arranged between the current collector plate and the restraint plate, and a liquid receiving portion that is provided on an outer edge portion of the main body portion, is arranged at least at a position corresponding to the pressure adjustment valve when viewed from the first direction, and stores the electrolytic solution discharged from the power storage module. The main body portion and the liquid receiving portion are integrally formed.

Provided is an ampoule-type reserve battery including: an ampoule casing having an accommodation part formed therein; an electrolyte accommodated in a lower portion of the accommodation part; a leakage prevention liquid made of oil, which is phase-separated from the electrolyte without being mixed therewith so as to prevent the electrolyte from leaking through an upper portion of the accommodation part, and accommodated in the upper portion of the accommodation part; and a separation membrane mounted in the accommodation part and configured to separate the electrolyte from the leakage prevention liquid.

A battery cell includes an outer housing having a top end and a bottom end, a cell body mounted inside the outer housing with a gap present between an outer wall of the cell body and an inner wall of the outer housing, an upper cover covering the top end and provided with an electrolyte injection hole and a degassing hole that are both in communication with the gap, and a conduit. One end of the conduit is connected to the electrolyte injection hole, and another end of the conduit extends into the gap and toward the bottom end.

A battery cell includes an outer housing having a top end and a bottom end, a cell body mounted inside the outer housing with a gap present between an outer wall of the cell body and an inner wall of the outer housing, an upper cover covering the top end and provided with an electrolyte injection hole and a degassing hole that are both in communication with the gap, and a conduit. One end of the conduit is connected to the electrolyte injection hole, and another end of the conduit extends into the gap and toward the bottom end.

A battery device (100) is disclosed, comprising a plurality of cells (110), an enclosure (120) configured to accommodate cells when they are at least partly immersed in a thermal management liquid, and at least one flow unit (130) arranged within the enclosure to control a flow of the thermal management liquid through the enclosure. The at least one flow unit comprises a first electron (131) and a second electrode (132) that are arranged offset from each other and being connectable to a voltage source so as to affect the flow between the electrodes.

A battery device (100) is disclosed, comprising a plurality of cells (110), an enclosure (120) configured to accommodate cells when they are at least partly immersed in a thermal management liquid, and at least one flow unit (130) arranged within the enclosure to control a flow of the thermal management liquid through the enclosure. The at least one flow unit comprises a first electron (131) and a second electrode (132) that are arranged offset from each other and being connectable to a voltage source so as to affect the flow between the electrodes.

Provided is a metal-air battery and a method of using the same that make it possible to obtain a high output while also promoting the discharge of product associated with power generation and achieve stable output over time. A metal-air battery according to the present invention comprises a metal-air battery unit provided with a plurality of metal-air battery cells in parallel, each metal-air battery cell being configured to include a metal electrode, air electrodes disposed facing each other on either side of the metal electrode, and a housing that supports the metal electrode and the air electrodes, wherein the air electrodes are exposed on an outer face on either side of the housing, a liquid chamber is formed in each housing, and in the metal-air battery unit, an air chamber that is open on top is formed between the facing air electrodes between each of the metal-air battery cells, and in each metal-air battery cell, a through-hole that communicates to the liquid chamber and is supplies an electrolytic solution to the liquid chamber and can also release a product produced by a reaction between the metal electrode and the air electrodes to the outside of the metal-air battery unit is formed.

The present invention relates to a battery cell refillable with an electrolyte, an electrolyte refilling system for a battery pack configured to include a plurality of battery cells, and an electrolyte refilling method for a battery pack of an electric vehicle.