Toyota Jidosha Kabushiki Kaisha

Toray Industries, Inc.

Hiroaki Kawamura

Kohei Shintani

Yasuo Kubota

Eiichiro Tamaki

Mashio Taniguchi

Masatoshi Kakutani

Miyuki Tabayashi

Mariko Higuchi

Yukiko Ohnishi

Hanxiao Yang

Mayumi Hara

Miyuki Matsushita

Hironobu Tsuji

Tomoya Onozuka

Naoya Hashidate

An object is a lithium ion battery having high safety and a high energy density and allows estimation of the remaining capacity of the battery from the discharge voltage, provide a positive electrode for lithium ion secondary batteries that includes a lithium iron phosphate particle, a lithium iron manganese phosphate particle, and a layered oxide-based active material particle at a weight ratio of x:y:z, wherein 0.10≤x≤0.60, 0.10≤y≤0.70, 0.10≤z≤0.40, and x+y+z=1, and provide a lithium ion secondary battery characterized in that a discharge curve indicating a relationship between a discharge voltage and a discharge capacity of the lithium ion secondary battery has one non-plateau region between two plateau regions, and a width of the non-plateau region is 20% or more in terms of a state of charge (SOC).

Positive electrode for lithium ion secondary batteries, electrode paste for lithium ion secondary batteries, and lithium ion secondary battery

A movement assistance apparatus to be provided in a movement assistance device and configured to execute a movement assistance operation for assisting movement of a user includes a mode switching control unit configured to switch, based on a magnitude of a surrounding risk on the movement of the user, a power mode between a normal mode in which the movement assistance operation is executable and a power saving mode in which a power consumption is smaller than a power consumption in the normal mode. A condition for setting the power mode to the power saving mode includes a condition that the surrounding risk satisfies a predetermined low-risk condition.

Movement assistance apparatus and movement assistance system

In a mobility support device, an external device that is present on a moving route of a user who is a target of support is identified based on a set moving plan, and first communication means that enables direct communication between the identified external device and a white cane carried by the user is established. Then, support information for supporting mobility of the user is generated based on information received from the external device by the first communication means, and the generated support information is output to an output device.

Mobility support device, information processing method, and storage medium

The purpose of the present invention is to provide positive electrode active substance particles for a lithium ion secondary battery, such particles being capable of producing a lithium ion secondary battery having excellent high-speed discharge properties. The present invention is a granulated body of a positive electrode active substance for a lithium ion secondary battery, wherein the primary particle average diameter is 10 to 80 nm and the number of primary particles having a diameter of 100 nm or greater is no more than 5.0%.

Positive electrode active substance for lithium ion secondary battery and lithium ion secondary battery

It is determined whether a traffic light is recognized in an image based on each of a result of a recognition operation by a traffic light first recognition unit (a recognition operation of the traffic light for an image acquired by a camera using a learned model based on pre-annotated data) and a result of a recognition operation by a traffic light second recognition unit (a recognition operation of the traffic light for an image acquired by the camera based on a feature amount of the traffic light). This makes it possible to sufficiently obtain the recognition accuracy of the traffic light, and to appropriately perform an instruction to a pedestrian according to the state of the traffic light.

Walking support system

When a frontmost white line of a crosswalk cannot be detected due to an obstacle existing on the crosswalk, an edge position of the obstacle closer to a pedestrian in an image acquired by a camera is set as the frontmost white line of the crosswalk. As a result, a vibration generation device vibrates in a pattern that urges the pedestrian to stop at the time when the pedestrian reaches a position before the edge position of the obstacle closer to the pedestrian, so that a stop notification for walking can be appropriately performed to the pedestrian even when the obstacle exists on the crosswalk.

An information processing device calculates an occupancy rate of a pedestrian crossing in an image obtained by capturing an image of a traveling direction of a target person, determines a crossing status of the target person for the pedestrian crossing based on the calculated occupancy rate, and generates support information for supporting the target person crossing the pedestrian crossing based on the crossing status.

Information processing device and information processing method

When it is determined that a presence of a traffic light is not recognized in an image acquired by a first image acquisition operation by a camera, the presence of the traffic light is recognized in an image acquired by a second image acquisition operation in which a recognition accuracy of the presence of the traffic light is improved. In this second image acquisition operation, it is assumed that a pedestrian is stopped in front of a pedestrian crossing, and there is little demand for increasing a detection speed of objects such as moving objects present in a surrounding area. Thus, it is possible to sufficiently obtain the recognition accuracy of the traffic light by the second image acquisition operation that gives priority to the recognition accuracy of the presence of the traffic light.

An image area including a traffic light in an image taken by a camera is determined, and the determined image area including the traffic light is extracted and the extracted image area is subjected to enlargement processing to determine whether a status of the traffic light is red or green, and notice to start crossing is provided to a user under a condition that the status of the traffic light switches from red to green. Consequently, even with image information from a single camera alone, accuracy in recognition of the traffic light can sufficiently be enhanced. As a result, crossing start notice can properly be provided without an increase in configuration complexity and weight of the system.

Walking aid system

A controller of a white stick system determines a walking direction of a person who acts without using eyesight based on sensor data acquired from built-in sensors, such as a camera, and generates a first notification to notify the determined walking direction. A wireless communication unit receives information regarding movement of a mobile object present around the person from a data communication module and a mobile terminal. The controller generates a second notification to notify a collision between the person who moves without using eyesight and the mobile object when the collision is predicted based on the information regarding movement of the mobile object.

Information processor

A method is provided for producing polyanionic positive electrode active material composite particles, which comprises: a step 1 wherein precursor composite granulated bodies, each of which contains a polyanionic positive electrode active material precursor particle in graphite oxide, are formed by mixing a polyanionic positive electrode active material precursor and graphite oxide; and a step 2 wherein the precursor composite granulated bodies obtained in step 1 are heated at 500&#xb0; C. or higher in an inert atmosphere or in a reducing atmosphere. The maximum intensity of the X-ray diffraction peak based on the positive electrode active material is less than 50% of the maximum intensity of the X-ray diffraction peak based on the materials other than the positive electrode active material. The maximum intensity of the X-ray diffraction peak based on the positive electrode active material is 50% or more of the maximum intensity of the X-ray diffraction peak based on the materials other than the positive electrode active material.

Method for producing polyanionic positive electrode active material composite particles, and polyanionic positive electrode active material precursor-graphite oxide composite granulated bodies

A method for producing an active material particle for a lithium ion battery, the method including steps of: flowing a plurality of raw material solutions into respective raw material-feeding channels under a pressure of 0.3 to 500 MPa, the solutions being capable of inducing a chemical reaction when mixed, thereby producing an active material particle for a lithium ion battery or an active material precursor particle for a lithium ion battery; and mixing the plurality of raw material solutions at a junction of the raw material-feeding channels to induce the chemical reaction, thereby continuously producing an active material particle for a lithium ion battery or producing an active material precursor particle for a lithium ion battery.

Method for producing lithium ion cell active material particles

A conventional positive electrode material for lithium ion batteries that is made of positive electrode active material/graphene composite particles has low graphene material ion conductivity and is incapable of providing favorable battery performance. In the present invention, positive electrode active material/graphene composite particles are conferred with high electron conductivity and ion conductivity by formation of an appropriately functionalized graphene/positive electrode active material composite, and are capable of yielding a high-capacity/high-output lithium ion secondary battery when used as a positive electrode active material for a lithium ion battery.

Positive electrode active material/graphene composite particles, positive electrode material for lithium ion cell, and method for manufacturing positive electrode active material/graphene composite particles

The present invention makes a lithium ion secondary cell exhibit high capacity when lithium manganese phosphate is used as the active material of the lithium ion secondary cell. The present invention is directed to lithium manganese phosphate nanoparticles having a ratio I/Iof the peak intensity at 20&#xb0; to the peak intensity at 29&#xb0; obtained by X-ray diffraction of greater than or equal to 0.88 and less than or equal to 1.05, and a crystallite size determined by X-ray diffraction of greater than or equal to 10 nm and less than or equal to 50 nm.

Lithium manganese phosphate nanoparticles and method for manufacturing same, carbon-coated lithium manganese phosphate nanoparticles, carbon-coated lithium manganese phosphate nanoparticle granulated body, and lithium ion cell

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Toyota, Japan

Hiroaki Kawamura