Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Mitsushita Denki Kabushiki Kaisha

Takayuki Inuzuka

Yasuhiro Yoshida

Hisashi Shiota

Michio Murai

Kouji Hamano

Shigeru Aihara

Daigo Takemura

Hiroaki Urushibata

Jun Aragane

Shou Shiraga

Sho Shiraga

Syo Shiraga

Osamu Hiroi

Muneaki Mukuda

Hideki Asao

Sei Tsunoda

Akihiro Fujita

Yuhei Awano

Kosei Tsuji

Tomonori Abe

Kazuhisa Henmi

Iwao Katsuno

Hideo Iinuma

Naosi Yamada

Sigeru Aihara

Mitsuaki Nakata

Kazuhiko Yamashita

A primary molding product is formed by integrally forming a first lead frame and a second lead frame with a primary molding resin portion. In addition, in order to prevent separation of the first lead frame and the second lead frame from the primary molding resin portion, a hook-and-hold portion for preventing separation of the first lead frame from the primary molding resin portion and separation of the second lead frame from the primary molding resin portion is provided on an outer surface of each of the first lead frame and the second lead frame. Thus, a resin molding part capable of achieving suppression of increase in a thickness thereof without deformation or displacement of a lead frame and a manufacturing method thereof can be provided.

Resin molding part and manufacturing method thereof

A method of manufacturing a waveguide includes forming two waveguide units, each waveguide unit having a channel defined by a bottom wall and two side walls generally transverse to the bottom wall, flanges extending from the side walls, outside the groove, transverse to the side walls and generally parallel to the bottom wall, the flanges including though holes; joining the two waveguide units to each other so that the flanges of a first of the waveguide units abut the flanges of a second of the waveguide units, with the grooves forming a channel for guiding waves; and, by insert molding, forming a thermoplastic resin cover that fills the through holes in the flanges and covers both of the first and second waveguide units, at least partially.

Method of manufacturing a waveguide

Conventional batteries are disadvantageous in that a firm outer case must be used to maintain an electrical connection between electrodes, which has been an obstacle to size reduction. Those in which each electrode and a separator are joined with an adhesive resin suffer from conflict between adhesive strength and battery characteristics, particularly ion conductivity and internal resistivity. To solve these problems, it is an object of the invention to reduce resistance between electrodes, i.e., internal resistance of a battery to improve battery characteristics while securing both insulation function against electron conduction and ion conductivity between electrodes and also to maintain adhesive strength enough to firmly join the electrodes thereby to provide a light, compact and thin battery. The internal resistivity can be diminished by joining a positive electrode and a negative electrode with an adhesive resin layer having at least one adhesive resin layer containing a filler. The adhesive resin layer has pores, which are filled with an electrolytic solution to exhibit sufficient ion conductivity thereby to improve battery characteristics and to retain adhesive strength.

Battery with adhesion resin layer including filler

Conventional separators had a function that their melting made minute holes inside the separator smaller, leading to cut off of ion conductivity in temperature increase due to unusual conditions such as short circuit. However, there was a problem that, at a temperature higher than a certain degree, not only the minute holes were closed but also the separator itself was melted to cause deformation of the separator such as shrink and generation of holes due to melting and insulation was broken. The present invention has been carried out in order to solve the above problems. The separator for batteries of the present invention comprises a first porous layer ( ) containing a thermoplastic resin as a main component and a second porous layer ( ) laminated on the first porous layer ( ), which has higher heat resistance than that of the first porous layer ( ).

Separator for battery and battery

A method for manufacturing a lithium ion secondary battery comprising preparing a positive electrode ( ) where a positive electrode active material ( ) is joined with a positive electrode collector ( ), a negative electrode ( ) where a negative electrode active material ( ) is joined with a negative electrode collector ( ), and a separator ( ) for retaining the electrolytes including lithium ions, being arranged between the positive electrode ( ) and the negative electrode ( ), the process of supplying adhesive solution applied on the separator with a second solvent different from a first solvent after applying the adhesive resin solution, where adhesive resin ( ) is dissolved in the above first solvent, to the separator ( ), and the process of forming an electrode laminate by sticking the positive electrode ( ) and the negative electrode ( ) to the separator ( ).

Method for manufacturing lithium ion secondary battery

A secondary battery having a positive electrode, a negative electrode, and a separator that is arranged between the two electrodes. A porous adhesive resin layer has through holes and the resin layer is formed between the separator and one of the positive electrode and the negative electrode to bond the separator to the one of positive and negative electrodes.

Lithium ion secondary battery

A paste-like active material mixture prepared by mixing an active material powder and a particulate material comprising a polymer soluble in a nonaqueous electrolytic solution is applied to, e.g. collectors and to a uniform thickness, and then dried to form positive and negative electrodes containing an active material powder and a particulate polymer. The two electrodes are assembled into an electrode laminate into which the foregoing electrolytic solution is then injected.

A secondary lithium ion battery, comprising a plurality of laminates ( ) each having a separator ( ) holding an electrolytic solution to which a positive electrode ( ) and a negative electrode ( )are joined with an adhesive resin layer ( ) having a mixed phase composed of an electrolytic solution phase ( ), a polymer gel phase ( ) containing an electrolytic solution, and a polymer solid phase ( ).

Lithium ion secondary battery and its manufacture

An adhesive for batteries. The adhesive has improved wetting properties, improved adhesive strength and prevents deterioration of battery performance. Secondary batteries can be obtained having an arbitrary shape such as a thin shape with high reliability and high charge and discharge efficiency. The adhesive includes a thermoplastic resin, a solvent capable of dissolving the resin and a neutral and aprotic surfactant. The surfactant includes a polysiloxene skeleton. The adhesive is used in batteries for adhering an active material layer joined to a current collector to a separator.

Bonding agent for cells and cell using the same

To provide a practical thin type lithium ion secondary battery having a excellent safety and charge-discharge properties. A lithium ion secondary battery comprising a positive electrode a negative electrode a separator retaining an electrolytic solution, and an adhesive resin layer which connects said positive electrode and negative electrode to said separator characterized in that said adhesive resin layer comprises a polyvinylidene fluoride and an ionically-conducting polymer compound incorporated therein.

Lithium ion secondary battery and method of fabricating the same

A lithium ion battery comprising a positive electrode a negative electrode and a separator for retaining an electrolyte, characterized in that as an adhesive for bonding said positive electrode to said separator and said negative electrode to said separator there is used a thermosetting adhesive comprising a mixture of at least one organic vinyl compound containing two or more vinyl groups per molecule, a reaction catalyst and a volatile organic solvent.

Adhesive for battery, battery using the same and method of fabricating the same

Conventional batteries are disadvantageous in that a firm outer case must be used to maintain an electrical connection between electrodes, which has been an obstacle to size reduction. Those in which each electrode and a separator are joined with an adhesive resin suffer from conflict between adhesive strength and battery characteristics. To solve these problems, it is an object of the invention to provide a battery which requires no outer case so as to realize reduction in thickness and weight and yet exhibits excellence in both battery characteristics and adhesive strength. A positive electrode, a negative electrode, and a separator are joined via an adhesive resin layer having at least one adhesive resin layer containing a filler. The adhesive resin layer has pores, which are filled with an electrolytic solution to exhibit sufficient ion conductivity thereby to improve battery characteristics and to retain adhesive strength.

Battery having an adhesive resin layer containing a filler

An object is to provide with good productivity a practical lithium ion secondary battery which secures lightness in weight and safety without using a firm battery case and has reduced internal resistivity. The lithium ion secondary battery comprises a tabular roll type laminated electrode body in which a band-formed positive electrode ( ) comprising a positive electrode active material layer ( ) and a positive electrode current collector ( ) alternates with a band-formed negative electrode ( ) comprising a negative electrode active material layer ( ) and a negative electrode current collector ( ), having therebetween a band-formed rolled separator ( ) which holds a lithium ion-containing electrolytic solution, the positive electrode ( ) or the negative electrode ( ) being adhered with two separators ( ) by an adhesive layer ( ).

Lithium ion secondary battery and process for producing the same

The invention is a high-performance lithium ion secondary battery which needs no firm case so that it is possible to reduce the size and weight and to design the shape freely and yet which secures high structural strength and safety. The method of the invention for forming a lithium ion battery comprises the step of joining a positive electrode ( ) having a positive electrode active material layer ( ) joined to a positive electrode current collector ( ) and a negative electrode ( ) having a negative electrode active material layer ( ) joined to a negative electrode current collector ( ) with an adhesive resin ( ) comprising at least partially a plastic resin being present in parts therebetween and the step of deforming the adhesive resin ( ). The method achieves simplification and improvement of productivity in forming a lithium ion battery.

Lithium ion battery and method for forming the same

A uniform mixture of a powdered active material , conductive fiber , and a binder resin is applied to a polytetrafluoroethylene plate, etc. to a prescribed thickness and dried to form a sheet electrode . A pair of electrodes are adhered to a separator to make an electrode laminate . A battery is formed of the electrode laminate or a plurality of the electrode laminates

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Tokyo, Japan

Takayuki Inuzuka