The Furukawa Electric Co., Ltd.

Furukawa Automotive Systems Inc.

Naotaka Uchino

Etsuzo Sato

Yoichi Iso

Nobutake Orime

Daisuke Inoue

Noriyasu Iwane

Taiji Mitsuyama

Takayuki Morikawa

Akira Oono

Hirokazu Narui

A rechargeable battery short-circuit early detection device that detects a short-circuit in a rechargeable battery includes one or more processors connected to a current sensor that detects a charging current of the rechargeable battery, wherein the one or more processors are programmed to: if a detected temporal slope of the charging current exceeds a first threshold, determine that there is a possibility that a short circuit has occurred in at least one of the cells; detect anew a temporal slope of the charging current after a prescribed period of time has elapsed since the determination of said possibility; and thereafter, if the anew detected temporal slope of the charging current exceeds a second threshold that is greater than the first threshold, determine that there is a possibility that the short-circuit is progressing, and output a signal indicating said possibility.

Rechargeable battery short circuit early detection device and rechargeable battery short circuit early detection method

A rechargeable battery short-circuit early detection device that detects a short-circuit in a rechargeable battery includes one or more processors connected to a current sensor that detects a charging current of the rechargeable battery, wherein the one or more processors are programmed to: while the rechargeable battery is being charged, receive a current signal indicating the charging current from the current sensor; detect a temporal change in the charging current indicated by the current signal; determine, when the charging current increases over time, that there is a possibility that the rechargeable battery has short-circuited; and output data indicating a determined result.

A secondary battery deterioration estimation device includes receiving a first signal representing a discharging voltage; receiving a second signal representing a discharging current from a current sensor; calculating values of elements forming an equivalent circuit of the secondary battery based on the first and second signals; calculating a state of health (SOH) of the secondary battery based on the values of the elements forming the equivalent circuit; generating history information showing history of a use state of the secondary battery; calculating the SOH of the secondary battery based on the history information; determining a deterioration state of the secondary battery with reference to at least one of the SOH calculated by the values of the elements or the SOH calculated by the history information by the processor in accordance with a state of the secondary battery; and outputting data representing the deterioration state of the secondary battery.

Device for estimating degradation of secondary cell, and method for estimating degradation of secondary cell

Provided are an antenna and a combination antenna having a wide directivity in a predetermined plane direction. The antennais configured to have rimsat left and right ends of a dielectric substratein the X direction in such a manner as to sandwich antenna elements. The rimsmay be metal plates or EBGs. As the rimsare thus provided at both sides to sandwich the antenna elements, it is possible to reduce the width of the dielectric substrateof the antennarequired for realizing wide coverage. As a result, it is possible to create a greater space for integration of another RF circuit and improve the space factor.

Antenna and combination antenna

Provided is a built-in transmitting and receiving integrated radar antenna whose coverage of a horizontal radiation pattern is widened and whose space factor is improved by integrating high-frequency circuit component onto an antenna substrate while suppressing unnecessary waves. A first dielectric substrate () is formed into a three-layered structure in which a bias line () of an MIC is disposed between a second layer () and a third layer () and a second ground plane () is disposed between the first layer () and the second layer (). Also, the second ground plane () is conductively connected with isolated through-holes (), so that a domain in which a feeding port () is disposed is isolated from a domain (B) in which the bias line () is disposed.

Built-in transmitting and receiving integrated radar antenna

Disclosed is an antenna for a radar device which is available for angle measuring in a wide angle for both of the right and the left directions from a travelling direction of a vehicle. SOLUTION: An antenna for radar devicecomprises an antenna unitas a combination of one of antenna elementsand one of second bottom boards, wherein a plurality thereof are arrayed on a first bottom board. The antenna elementis bent as L-shaped, one end thereof is opened, another end thereof penetrates the first bottom boardas noncontact therewith, and is connected to a transmission linewith further penetrating a line substrate

Growing community of inventors

Tokyo, Japan

Naotaka Uchino