Toyota Jidosha Kabushiki Kaisha

Masakazu Habu

Junta Izumi

Kenji Kimura

Kiyohito Machida

Kiyoe Ochiai

Makito Muramatsu

Masanosuke Sufu

Makoto Kakuchi

Yoichi Onishi

Masashi Takahashi

Shuji Tomura

Naoki Yanagizawa

Kyosuke Tanemura

Juni Yasoshima

Kazuo Ootsuka

Takashi Kojima

Koichi Ichikawa

Noritaka Ikejiri

Atsuhiro Takahashi

Hiroshi Tsukada

A battery pack according to the present disclosure includes a plurality of battery blocks, the battery blocks being arrayed adjacent to each other in a stacking direction that is set in advance. After two or more of the battery blocks are replaced with multiple replacement battery blocks that have been refreshed in advance, multiple non-replacement battery blocks, among the battery blocks, that have not been replaced with the replacement battery blocks, are adjacent to each other in the stacking direction, and the replacement battery blocks are adjacent to each other in the stacking direction.

Battery pack, vehicle equipped with battery pack, and replacement method of battery blocks in battery pack

The battery cellar includes a storage cabinet that stores a plurality of used batteries, a power converter (an AC/DC converter and a DC/DC converter) electrically connected between the plurality of used batteries stored in the storage cabinet and a power system, and a server that controls the power converter to charge or discharge the plurality of batteries in response to a demand response request from the power system. The server selects, from the plurality of used batteries, a first battery, the degradation degree of which has reached a reference value, and a second battery, the degradation degree of which does not reach the reference value but is predicted to reach the reference value within a predetermined period, as replacement target batteries.

Battery management system and battery management method for prediction, selection and charging

The battery cellar includes a storage cabinet that stores a plurality of batteries, a power converter (an AC/DC converter and a DC/DC converter) electrically connected between the plurality of batteries stored in the storage cabinet and a power system to perform a bidirectional power conversion operation, and a server that controls the power converter to charge or discharge the plurality of batteries in response to a DR request from the power system. The server, based on a level of demand determined in accordance with a rank related to a degradation degree of a battery, suppresses the charging/discharging of a battery with a higher demand rank among the plurality of batteries as compared with the charging/discharging of a battery with a lower demand rank among the plurality of batteries.

Battery management system and battery management method

The battery cellar includes a storage cabinet that stores a plurality of batteries, an AC/DC converter and a DC/DC converter electrically connected between the plurality of used batteries stored in the storage cabinet and a power system, and a server that controls the AC/DC converter and the DC/DC converter. The server controls the AC/DC converter and the DC/DC converter in response to a demand response request from the power system, and evaluates a degradation degree of each of the plurality of used batteries based on a voltage and a current of each of the plurality of used batteries charged or discharged by the AC/DC converter and the DC/DC converter.

A battery cellar includes: battery groups each including a plurality of batteries; a power converter (AC/DC converter and DC/DC converter) electrically connected between the plurality of batteries and an electric power system; and a server that controls operation of the power converter in accordance with a DR request from the electric power system, to cause charging and discharging of the plurality of batteries. The battery groups include a low operating group and a high operating group that is less than or equal to the low operating group in terms of the number of types of ranks of batteries included in each battery group, where the ranks each represent a degree of battery degradation. The server suppresses charging and discharging of the plurality of batteries included in the low operating group, relative to charging and discharging of the plurality of batteries included in the high operating group.

A power supply device includes: a first high-voltage line for exchanging the electric power externally; a second high-voltage line for applying current flowing in a direction opposite to the first high-voltage line; a plurality of batteries; a plurality of SUs, the SUs being provided corresponding to the respective batteries, switching a connection state of the batteries to the first high-voltage line, and being disposed in a circle; and an SCU that controls the SUs. The SU can switch between a first state in which the battery corresponding to the SU is connected in series to the first high-voltage line and a second state in which the battery is not connected to the first high-voltage line. The SCU controls the SUs to switch to the first state or the second state in accordance with a voltage of the electric power to be charged and discharged.

Power supply device

A management apparatus is configured to adjust an upper limit amount of electric power for charging. The management apparatus may be provided in an electric vehicle or a charging apparatus. The management apparatus may include a dial for adjusting the upper limit amount of electric power, and a user may be able to adjust the upper limit amount of electric power by operating the dial. A user who drives 300 km per week for commute may set the amount of electric power corresponding to 300 km (plus extra travel distance) for the upper limit amount of electric power. The user may connect a battery to the charging apparatus on weekends. When the battery has a capacity to store the amount of electric power corresponding to, for example, 500 km, the management apparatus may stop charging when the battery is charged with the set upper limit amount of electric power.

Management apparatus for battery of electric vehicle

A computer of an auction system presents vehicle body quality information indicating a quality of a vehicle body excluding a battery of an electric vehicle and battery quality information, and receives an electric vehicle bid price, a vehicle body bid price, and a battery bid price. When a total of the vehicle body bid price and the battery bid price exceeds the electric vehicle bid price, the computer determines a battery purchase applicant who presents the battery bid price as a winning bidder of the battery, and a vehicle body purchase applicant who presents the vehicle body bid price as a winning bidder of the vehicle body. When the total is lower than the electric vehicle bid price, the computer determines an electric vehicle purchase applicant who presents the electric vehicle bid price as a winning bidder of the electric vehicle.

Auction system of electric vehicle

A cooling system includes a cooling fan that blows cooled air to a main battery and a temperature sensor. When the temperature of the main battery is equal to or higher than a first predetermined temperature after start up of an electric drive vehicle, the cooling fan is driven with a constant command value for a predetermined time period and detection process of abnormal condition is performed for detecting presence or absence of abnormal condition of the cooling fan based on an actual rotation speed of the cooling fan. When the start up of the electric drive vehicle is based on an external charging operation of the secondary battery, driving of the cooling fan with the constant command value is inhibited. This structure ensures sufficient opportunities for detecting presence or absence of abnormal condition of the cooling fan.

Cooling system for on-vehicle secondary battery

A cooling system for cooling a main batteryincludes a cooling fanand a temperature sensorconfigured to detect a battery temperature TB. The cooling system performs constant control in which the cooling fanis driven at a constant command value when the battery temperature TB reaches or exceeds a first temperature Tafter startup of the electrically powered vehicle. Additionally, the cooling system detects whether or not a malfunction occurs in the cooling fan, based on an actual rpm of the cooling fanobtained during the constant control. The cooling system performs the constant control in a situation in which charging of the main batteryis continued for a predetermined period of time or longer after the startup of the vehicle, regardless of whether the battery temperature TB is below the first temperature T

Cooling system for vehicle-mounted secondary battery

A secondary battery is installed on an electric vehicle and includes a cooling fan, a temperature sensor and a controller. The controller is configured to drive the cooling fan at a fixed command value for a predetermined period, when the temperature of the secondary battery becomes equal to or higher than a first predetermined temperature after the electric vehicle is started. The controller is configured to detect a presence or absence of an abnormality in the cooling fan based on an actual rotational speed of the cooling fan during the predetermined period. The controller is configured to inhibit driving of the cooling fan at the fixed command value when the temperature of the secondary battery is equal to or higher than a second predetermined temperature that is higher than the first predetermined temperature.

Cooling system for secondary battery

If the battery temperature TB of the main battery is equal to or higher than the first temperature Tand a noise level within a vehicle interior is equal to or higher than a predetermined value Lo during inhibition of the first constant control under a predetermined condition, the cooling system performs second constant control for driving the cooling fan with a second command value Dand also performs the problem detection processing based on an actual rotation rate of the cooling fan during the second constant control.

Control apparatus () forcefully stops inverter () and inverter () when DC/DC converter () is anomalously stopped. Additionally, when one of inverters () is anomalously stopped while DC/DC converter () is normal, control apparatus () forcefully stops the other inverter. Then, when a recovery condition is satisfied after the other inverter is forcefully stopped, control apparatus () recovers the other inverter.

Electric load apparatus, method for processing abnormality, and computer readable recording medium recording program for causing computer to execute processing of abnormality in electric load apparatus

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Toyota, Japan

Masakazu Habu