The invention relates to an energy storage system for a vehicle, in particular a starter battery for a vehicle, having a plurality of energy storage cells for providing and/or storing electric energy and a housing which has a plurality of wall elements that delimit the interior of the housing. The housing is designed to receive the plurality of energy storage cells in the interior of the housing. A plurality of separating walls are arranged in the interior of the housing in order to divide the interior of the housing into a plurality of chambers, wherein each chamber is designed to receiving an energy storage cell. A fluidic connection is formed between the individual chambers, and a ventilation valve is arranged on one of the wall elements, preferably a cover element, of the housing in a respective region paired with the corresponding chamber. At least one of the ventilation valves is an active ventilation valve, and the remaining ventilation valves are blind closures.

A valve structural body that is easy to attach to a container is for a power storage device, and includes a casing in which a passage through which gas generated inside of the container is discharged to the outside of the container is formed, and a valve mechanism that is accommodated in the casing and allows the gas to pass through the passage to the outside of the container via the passage if the internal pressure of the container has risen due to the gas generated inside of the container. The casing includes a first plane, and a second plane that is parallel to the first plane.

A valve structural body that is easy to attach to a container is for a power storage device, and includes a casing in which a passage through which gas generated inside of the container is discharged to the outside of the container is formed, and a valve mechanism that is accommodated in the casing and allows the gas to pass through the passage to the outside of the container via the passage if the internal pressure of the container has risen due to the gas generated inside of the container. The casing includes a first plane, and a second plane that is parallel to the first plane.

According to one or more embodiments, a method of producing a lithium-ion cell includes constructing a cell defining a cavity housing an electrode assembly including a cathode, an anode, a separator, and an electrolyte, forming the cell to generate formation gas in the cavity, and releasing the formation gas from the cavity. The method further includes placing a solid adsorbent in the cavity adjacent the electrode assembly after the releasing, and sealing the cavity with the solid adsorbent therein such that post-formation gas is adsorbed by the solid adsorbent in the cavity.

A battery degassing unit for a battery housing has a base body that has a gas passage opening and is to be connected fluid-tightly to a pressure compensation opening of the battery housing. A first filter covers the gas passage opening at an inner side of the base body. The first filter is a separation grid with first grid openings. A second filter is a separation grid arranged between first filter and inner side of the base body and has second grid openings. The base body has fastening regions for fastening the battery degassing unit to the battery housing. One of the first and second filters completely engages across the gas passage opening. One of the first and second filters is a corrugated filter so that a length extension in a stretched state in at least one direction is at least 1.3 times as large as in a corrugated state.

A battery module may comprise: a common mounting structure including a cooling system and a venting system; and a first plurality of battery cell sub-modules, the first plurality of battery cell sub-modules disposed on a first side of the common mounting structure and coupled to the common mounting structure.

An apparatus for degassing a battery cell includes: a gas suction portion providing negative pressure; a first tubular member connected to the gas suction portion, and having at least one suction port formed in a radial direction; a second tubular member connected to the gas suction portion, and provided to be coupled to the first tubular member; and a hemispherical cover coupled to the first tubular member and the second tubular member, respectively, wherein the hemispherical cover includes a first cover coupled to the first tubular member and a second cover coupled to the second tubular member, when the first tubular member and the second tubular member and are coupled, the first cover and the second cover may be disposed such that openings face each other, and the suction port may be disposed between the first cover and the second cover.

Provided is a technique capable of improving impregnation efficiency of a nonaqueous electrolyte into an electrode body. A manufacturing method herein disclosed includes producing a negative pressure in an inside of a battery case; introducing a nonaqueous electrolyte into the inside of the battery case; establishing communication between the inside of the battery case and external atmosphere; temporarily sealing a solution introduction port using a first sealing member, impregnating the electrode body with a nonaqueous electrolyte; opening the solution introduction port; and, sealing the solution introduction port using a second sealing member. Herein, the first sealing member includes an air permeable film. Air permeation is enabled between the inside of the battery case after the temporary sealing and external atmosphere. The permeability of a vapor derived from the nonaqueous electrolyte with respect to the film is smaller than the permeability of water vapor.

The present invention relates to a pressure relief element (11) to be used as an overpressure safety means in devices where a gaseous medium must be rapidly released in case of overpressure, wherein the pressure relief element (11) has at least one notch (9) which is designed as a predetermined breaking point where the pressure relief element (11) breaks at a certain level of overpressure, thereby irreversibly opening an exhaust path for the gaseous medium. The present invention also relates to a pressure relief device of an electrochemical battery, comprising such a pressure relief element and a battery comprising such a pressure relief device.

The present invention relates to a pressure relief element (11) to be used as an overpressure safety means in devices where a gaseous medium must be rapidly released in case of overpressure, wherein the pressure relief element (11) has at least one notch (9) which is designed as a predetermined breaking point where the pressure relief element (11) breaks at a certain level of overpressure, thereby irreversibly opening an exhaust path for the gaseous medium. The present invention also relates to a pressure relief device of an electrochemical battery, comprising such a pressure relief element and a battery comprising such a pressure relief device.