Abstract: With a method of storing meat stored in a refrigerator or a freezer after a lump of meat is prepared into small portions, which includes irradiating the meat with positive ions and negative ions before storage in the refrigerator or the freezer, a method of extending a durable life of food requiring storage by refrigeration, a method of suppressing growth of fungi developed at a surface of food requiring storage by refrigeration, and an ion irradiation apparatus which can suitably be used for these methods, a method allowing suppression of growth of fungi adhering to food (in particular, meat) requiring storage by refrigeration, a method of thereby extending a durable life of food requiring storage by refrigeration, and an apparatus which can suitably be used for these methods are provided.

Abstract: To obtain a secondary battery that surely positions and fixes a laminated type of electrode group by effectively curbing lateral deviation and vertical deviation, in secondary batteries RB1 to RB11 that include a laminated type of electrode group 1 in which a positive-electrode plate 2 and a negative-electrode plate 3 are so laminated via a separator 4 as to form a plurality of laminated layers, a structure is employed, in which vertical deviation in a lamination direction and lateral deviation in a lamination surface direction are curbed via a fix means that fixes the electrode group 1 to a predetermined position in an outer case 11 that houses the electrode group 1.

Abstract: An electrode body for batteries of the invention includes a first metal portion configured to include metal as an electrode active material as a main component, a first structural member configured to cover a part of a surface of the first metal portion, and a coating member configured to cover the other part of the surface of the first metal portion. The first metal portion, the first structural member, and the coating member are provided such that the first metal portion is divided between the first structural member and the coating member or the coating member is separated from the first metal portion to expose the metal included in the first metal portion.

Abstract: A rechargeable battery having excellent heat resistance, pressure resistance, and airtightness is provided by using a crimping technique to connect a metal exterior body and an electrode terminal. The rechargeable battery comprises an electrode group which includes a positive electrode and a negative electrode; an exterior container which includes an exterior canister for housing the electrode group, and a sealing plate for sealing an open part of the exterior canister; a pair of electrode terminals crimp-joined to the exterior container from inside the exterior container; and an electrolyte solution filled into the exterior container.

Abstract: A secondary battery with filling function has a corresponding secondary battery and a filling device. The corresponding secondary battery has a housing defining an accommodation chamber for accommodating a power generation portion, an opening portion formed in the housing, a stopper body closing the opening portion, and a coupling portion formed around the opening portion. The filling device has a cap body forming a sealed space around the opening portion by covering the opening portion and the stopper body closing the opening portion as a result of coupling to the coupling portion, an attachment and removal portion for attaching and removing the stopper body to/from the opening portion in the sealed space, and a filling portion for filling the inside of the housing with a non-aqueous electrolyte through the opened opening portion.

Abstract: A secondary battery with improved life characteristics is provided. The secondary battery (lithium-ion secondary battery) has: an electrode assembly including positive electrodes and negative electrodes; and a package container for housing the electrode assembly along with non-aqueous electrolyte liquid. The package container includes a package can for housing the electrode assembly and a sealing plate sealing the opening of the package can. On the sealing plate, an elevated portion is formed that projects toward the electrode assembly and has, on the side opposite from the electrode assembly, a cavity portion for storing refill non-aqueous electrolyte liquid. The elevated portion has a hole for feeding the refill non-aqueous electrolyte liquid stored in the cavity portion toward the electrode assembly. The hole is sealed with a sealing stopper formed of a resin material letting the refill non-aqueous electrolyte liquid leak toward the electrode assembly.

Abstract: In order to obtain a secondary battery and a method for producing same whereby, notwithstanding the large size of an electrode group of several tens of stacked layers of positive electrode plates, negative electrode plates, and separators, any residual air, gases, or the like present between layers can be effectively driven out, and the electrolyte can be induced to reliably penetrate into the interior of the electrode group, secondary batteries RB1 to RB4 and the method for producing same are configured such that, during creation of a vacuum in a vacuum injection step, a predetermined section of a battery can 10 opposing the vicinity of the center part of an electrode group 1 undergoes deformation by a predetermined amount or more, and a venting function of driving out residual air between the layers is exhibited.

Abstract: Provided are a secondary battery and a battery pack, in which when a plurality of secondary batteries having a laminated electrode assembly are stacked to constitute the battery pack, deformation of each secondary battery can be suppressed, electrode assemblies are not shifted, and no breakage occurs in terminals, even if an external force such as vibration is applied. For this purpose, a secondary battery (RB) includes anti-displacement members disposed inside and outside of the lid member (12) so as to be symmetric with respect to a surface of the lid member (12), so that secondary batteries are formed. Then, the secondary batteries are stacked and housed as a unit in a battery pack casing (CA), and a fixing means for uniformly pressing the same position in the stack direction so as to press and fix all the secondary batteries as a unit, so that a battery pack (M1) is formed.

Abstract: Provided is a large secondary battery including a lamination body in which multiple positive electrode plates, multiple negative electrode plates, and multiple separators are laminated, having a structure in which the lamination body is not shifted. The secondary battery with high reliability and a manufacturing method thereof is provided, in which there is no abnormal state even if an external force such as vibration is applied. Positive electrode plate (2), negative electrode plate (3), and separator (4) are laminated and integrated to form a predetermined number of layers of a lamination body unit. A plurality of the lamination body unit are stacked to form an electrode assembly (1). Uneven surfaces, i.e., salients (21) and recesses (23) are formed on contacting surfaces of the lamination body units to be stacked. Using the uneven surfaces, the lamination body units are positioned and stacked to form a secondary battery (RB1).

Abstract: A rechargeable battery having excellent heat resistance, pressure resistance, and airtightness is provided by using a crimping technique to connect a metal exterior body and an electrode terminal. The rechargeable battery comprises an electrode group which includes a positive electrode and a negative electrode; an exterior container which includes an exterior canister for housing the electrode group, and a sealing plate for sealing an open part of the exterior canister; a pair of electrode terminals crimp joined to the exterior container from inside the exterior container; and an electrolyte solution filled into the exterior container.

Abstract: To obtain a secondary battery that surely positions and fixes a laminated type of electrode group by effectively curbing lateral deviation and vertical deviation, in secondary batteries RB1 to RB11 that include a laminated type of electrode group 1 in which a positive-electrode plate 2 and a negative-electrode plate 3 are so laminated via a separator 4 as to form a plurality of laminated layers, a structure is employed, in which vertical deviation in a lamination direction and lateral deviation in a lamination surface direction are curbed via a fix means that fixes the electrode group 1 to a predetermined position in an outer case 11 that houses the electrode group 1.

Abstract: A secondary battery with improved life characteristics is provided. The secondary battery (lithium-ion secondary battery) has: an electrode assembly including positive electrodes and negative electrodes; and a package container for housing the electrode assembly along with non-aqueous electrolyte liquid. The package container includes a package can for housing the electrode assembly and a sealing plate sealing the opening of the package can. On the sealing plate, an elevated portion is formed that projects toward the electrode assembly and has, on the side opposite from the electrode assembly, a cavity portion for storing refill non-aqueous electrolyte liquid. The elevated portion has a hole for feeding the refill non-aqueous electrolyte liquid stored in the cavity portion toward the electrode assembly. The hole is sealed with a sealing stopper formed of a resin material letting the refill non-aqueous electrolyte liquid leak toward the electrode assembly.

Abstract: A secondary battery with filling function has a corresponding secondary battery and a filling device. The corresponding secondary battery has a housing defining an accommodation chamber for accommodating a power generation portion, an opening portion formed in the housing, a stopper body closing the opening portion, and a coupling portion formed around the opening portion. The filling device has a cap body forming a sealed space around the opening portion by covering the opening portion and the stopper body closing the opening portion as a result of coupling to the coupling portion, an attachment and removal portion for attaching and removing the stopper body to/from the opening portion in the sealed space, and a filling portion for filling the inside of the housing with a non-aqueous electrolyte through the opened opening portion.

Abstract: A nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode and a separator between the positive electrode and the negative electrode, in which at least one of the positive electrode and the negative electrode has an active material layer containing a material whose electric resistance increases at a high temperature, and the material is unevenly distributed in proximity to the separator of the active material layer.

Abstract: An electrode sheet of the present invention is a positive electrode sheet formed by laminating a conductive layer and a positive electrode active material layer in this order on each surface of a resin film, or is a negative electrode sheet formed by laminating a conductive layer and a negative electrode active material layer in this order on each surface of a resin film, each of the positive and the negative electrode active material layers being partially provided to the conductive layer, wherein the electrode sheet has a partially folded section where the electrode sheet with the conductive layer but without the positive and the negative electrode active material layers is folded twice or more in the same direction, and the conductive layers provided on the both surfaces of the resin film are electrically connected with each other in the folded section.