Toyota Jidosha Kabushiki Kaisha

Primearth Ev Energy Co., Ltd.

Toyota Jidosha Kabuhsiki Kaisha

Kunihiko Hayashi

Hideo Kobayashi

Katuhiko Arisawa

Kenichi Yamada

Yoshio Yamashita

Yuji Miyoshi

Yu Ofune

Masatoshi Yano

Yoichi Ogura

Yoshio Hasegawa

Hidefumi Aikawa

Ryo Michikawauchi

Syusaku Sugamoto

Makoto Suzuki

Tomohiro Shinagawa

Takuya Hirai

Toshihisa Sugiyama

Taiichi Mori

Akihito Hosoi

Hirokazu Hata

Takashi Ogawa

Ryuta Sugiura

Masakazu Tabata

Hiroyuki Sugihara

Kazuki Iwatani

Tomoyuki Uezono

Manabu Orihashi

Hiroto Asano

Chikaaki Okuda

Tsuyoshi Sasaki

Tametoshi Mizuta

Tomoya Mesuda

Masahide Ishikawa

Taiithi Mori

Shun Okuda

Provided is a non-aqueous electrolyte secondary battery that can be produced while mixing at an interface between a positive electrode active material layer and a heat resistant layer is restricted even if a positive electrode slurry and a heat resistant layer slurry are simultaneously applied. The non-aqueous electrolyte secondary battery disclosed here includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode includes a positive electrode current collector, a positive electrode active material layer formed on the positive electrode current collector, and a heat resistant layer which is formed on the positive electrode current collector and is adjacent to the positive electrode active material layer. The positive electrode active material layer contains a positive electrode active material. The positive electrode active material is porous particles in which primary particles are aggregated. The positive electrode active material has a dibutyl phthalate oil absorption of 26.5 mL/100 g or more and 45.0 mL/100 g or less. The heat resistant layer contains an inorganic filler. A ratio of a tap density of the positive electrode active material to a tap density of the inorganic filler is 1.32 or more and 2.44 or less.

Non-aqueous electrolyte secondary battery including a heat resistance layer

The present invention provides a technology that allows supplying stably a nonaqueous electrolyte secondary battery having a high capacity retention rate and being excellent in resistance to deterioration. The nonaqueous electrolyte secondary battery disclosed herein is provided with a wound electrode body resulting from winding a stackhaving a stacking of a positive electrodeand a negative electrodeacross separators. The positive electrodehas a foil-shaped positive electrode collectorand a positive electrode mix layer. Each separatorhas a resin substrate layerand a heat resistance layer. In the nonaqueous electrolyte secondary battery disclosed herein, the peel strength of a boundary between the resin substrate layer and the heat resistance layer is 16 N/m or more and 155 N/m or less, and the density of the positive electrode mix layer is 2.3 g/cc or more and 2.6 g/cc or less. In this the nonaqueous electrolyte secondary battery, sufficient flexibility of the stackas a whole can be secured even when using high-peel strength separatorsin order to increase resistance to deterioration. Drops in production efficiency can be suitably suppressed as a result.

Nonaqueous electrolyte secondary battery, and method for producing a nonaqueous electrolyte secondary battery

Provided is a non-aqueous electrolyte secondary battery in which an increase in temperature, which is caused by a short circuit at an exposed part of an interface between a positive electrode current collector and an insulating layer provided on the positive electrode current collector, is suppressed. The non-aqueous electrolyte secondary battery disclosed here includes a positive electrode, a negative electrode and a non-aqueous electrolyte. The positive electrode includes a positive electrode current collector, a positive electrode active substance layer and an insulating layer. The positive electrode current collector has a part where the positive electrode current collector is exposed at at least one edge thereof. The insulating layer is positioned at a boundary between the positive electrode active substance layer and the part where the positive electrode current collector is exposed. The insulating layer contains an inorganic filler and resin particles at a mass ratio of 75:25 to 25:75. The compressive strength of the resin particles is 74 MPa or less.

Non-aqueous electrolyte secondary battery having an improved insulating layer

A battery includes at least an electrode array and an electrolyte solution. The electrolyte solution contains at least a solvent and a supporting salt. The electrode array includes at least a positive electrode, a porous insulating layer, and a negative electrode. The porous insulating layer is interposed between the positive electrode and the negative electrode. The porous insulating layer contains at least a group of inorganic nanoparticles and a group of polymer particles. Each inorganic nanoparticle in the group of inorganic nanoparticles is a dielectric. Each inorganic nanoparticle in the group of inorganic nanoparticles is in contact with the electrolyte solution.

Battery and method of producing the same

A cooling apparatus of a vehicle driving system for driving a vehicle according to the invention activates a heat pump to cool a hybrid system by cooling medium and flows an engine cooling water in an engine water circulation passage through a condenser to cool the cooling medium by the engine cooling water at the condenser when an engine water circulation condition is satisfied. The engine water circulation condition is a condition that a heat pump activation condition is satisfied, and an engine cooling condition is not satisfied. The heat pump activation condition is a condition that a process of cooling the hybrid system by the cooling medium of the heat pump is requested. The engine cooling condition is a condition that a process of cooling an internal combustion engine by the engine cooling water is requested.

Cooling apparatus of vehicle driving system

A vehicle-mounted temperature controller includes a low temperature circuit and a refrigeration circuit. The low temperature circuit has a heat generating equipment heat exchanger exchanging heat with heat generating equipment, a radiator, a first heat exchanger, and a three-way valve. The refrigeration circuit has a second heat exchanger discharging heat from the refrigerant to a high temperature circuit to make the refrigerant condense, and the first heat exchanger making the refrigerant absorb heat from the cooling water to make the refrigerant evaporate. The low temperature circuit includes a first partial circuit through which the cooling water flows through the radiator and the first heat exchanger, and a second partial circuit through which the cooling water flows through the heat generating equipment heat exchanger without passing through the radiator and the first heat exchanger. The cooling water circulates simultaneously and separately at these first partial circuit and second partial circuit.

Vehicle-mounted temperature controller

Provided is a manufacturing method of a compacted strip-shaped electrode plate including: an undried layer forming step of forming, on a current collector foil, a strip-shaped undried active material layer by rolling out a particle aggregate; a drying step of drying the undried active material layer to form an active material layer; and a pressing step of pressing the active material layer by rollers to compact the active material layer. The particle aggregate is a mixed particle aggregate in which first wet particles manufactured with the content ratio of conductive particles to the total solid content set to W1 and second wet particles manufactured with the content ratio of conductive particles to the total solid content set to W2, W2 being higher than W1, are mixed together.

Manufacturing method of compacted strip-shaped electrode plate, compacted strip-shaped electrode plate, and battery

A temperature control apparatus of a vehicle according to the invention stops activating a heat pump and supplies heat exchanging liquid from an engine passage to a battery passage when a warming of the battery is requested and a temperature of the heat exchanging liquid flowing out of the engine passage is equal to or lower than a permitted upper limit temperature. On the other hand, the apparatus activates the heat pump to cool the heat exchanging liquid and supplies the cooled heat exchanging liquid from the engine passage to the battery passage when the warming of the battery is requested and the temperature of the heat exchanging liquid flowing out of the engine passage is higher than the permitted upper limit temperature.

Temperature control apparatus of vehicle

Active material particles, a conductive material, a binder, and a solvent are mixed to prepare composite particles. The composite particles are mixed with metal short fibers to make the metal short fibers adhere to surfaces of the composite particles. After the adhesion of the metal short fibers, the composite particles are brought together and compacted to produce an electrode for electric storage devices. Each of the composite particles contains at least the active material particles, the conductive material, and the binder. The total content of the metal short fibers in the electrode for electric storage devices is not lower than 15 mass % and not higher than 35 mass %.

Method of producing electrode for electric storage devices, electrode for electric storage devices, and electric storage device

A cooling apparatus of a vehicle driving system of the invention connects an engine water circulation passage to a hybrid system water circulation passage and flows cooling water in the engine water circulation passage and the hybrid system water circulation passage to cool a first hybrid system component by the cooling water cooled by an engine radiator and cool a second hybrid system component by the cooling water cooled by a hybrid system radiator when an engine cooling process is not requested, a first hybrid system cooling process is requested, a second hybrid system cooling process is requested, and a connection condition is satisfied. The connection condition is satisfied when the engine cooling process is not requested, and the cooling water flowing into the hybrid system water circulation passage from the engine water circulation passage, can cool the first hybrid system component.

A temperature control apparatus of a vehicle of the invention flows a cooling medium in an engine circulation circuit and a battery circulation circuit and an activation of an engine heat exchanging system so as not to perform an engine heat exchanging when an engine temperature is lower than an engine warming end temperature and a battery temperature is lower than a predetermined battery temperature lower than a battery warming end temperature, and flows the cooling medium in the engine circulation circuit and the battery circulation circuit and the activation of the engine heat exchanging system so as to perform the engine heat exchanging when the engine temperature is lower than the engine warming end temperature, and the battery temperature is equal to or higher than the predetermined battery temperature.

The present invention provides a nonaqueous electrolyte secondary battery having high safety to reliably prevent the progress of successive heat generation when battery temperature rises caused by abnormalities such as internal short-circuits. The nonaqueous electrolyte secondary battery disclosed herein is provided with an electrode bodyin which a sheet-shaped positive electrodeand a sheet-shaped negative electrodeoppose each other across separators. In the nonaqueous electrolyte secondary battery disclosed herein, the peel strength of a boundary A between each separatorand a positive electrode mix layeris greater than the peel strength of a boundary B between the positive electrode mix layerand a positive electrode collector. As a result, the progress of successive heat generation derived from an increase in reaction heat can be prevented by causing the positive electrode mix layerto peel off the positive electrode collectoraccompanying thermal deformation of the separatorswhen battery temperature rises for instance due to an internal short-circuit.

Nonaqueous electrolyte secondary battery

A manufacturing method of a lithium ion secondary battery includes: forming a first mixture by mixing powder of a first electrode material, which is one of the active material and the conductive material, with powder of trilithium phosphate; forming a second mixture by mixing the first mixture with powder of a second electrode material which is the other one of the active material and the conductive material; forming a wet granulated body by mixing the second mixture with the binder and a solvent; and forming the active material layer by attaching the wet granulated body to the surface of the current collector foil.

Method of manufacturing lithium ion secondary battery

An oil pan structure () includes a lower structure () fixed to a lower portion of an engine block, a main oil pan () provided under an engine block with the lower structure being between the main oil pan and the engine block, a sub oil pan () that is provided in the main oil pan () and forms a first chamber () and a second chamber () inside the main oil pan (). The sub oil pan () is separated into an upper body () and a lower body (). The upper body () is formed together with the lower structure () by injection molding.

Oil pan structure

An engine cooling control deviceincludes: a housing portionA that has passages Pa, PAand PA; a rotorthat is provided in an intermediate portion M and has a rotation center at a position where at least two of distances between openings of the passages PA, PAand PAopening toward the intermediate portion M and the rotation center are different from each other; a sealing function portionA provided between the housing portionA and the rotor; an elastic memberthat is provided between the rotorand the sealing function portionA and individually biases the sealing function portionA toward each opening of the passages PA, PAand PAwith respect to different phases of the rotor

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Odawara, Japan

Kunihiko Hayashi