Yusai
Yusai Murakami, Suwon-Si KR
Patent application number | Description | Published |
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20100055543 | BATTERY MANAGEMENT SYSTEM AND DRIVING METHOD THEREOF - A battery management system (BMS) includes at least one sub-BMS and a main BMS. The at least one sub-BMS measures information about a battery, and generates an activation signal according to operating state. The main BMS receives the activation signal and determines the operating state of the at least two sub-BMSs. If the at least two sub-BMSs normally operate, the main BMS generates a synchronization signal and transfers the same to the sub-BMSs. The at least one sub-BMS measures the information about the battery according to the synchronization signal. | 03-04-2010 |
20100134070 | BATTERY MANAGEMENT SYSTEM AND BATTERY MANAGEMENT METHOD - A battery management system and a driving method thereof, to set a discharge completion voltage using the cell voltages of cells of a battery, and to balance the cell voltages according to the set discharge completion voltage. | 06-03-2010 |
20100295382 | BATTERY MANAGEMENT SYSTEM AND DRIVING METHOD THEREOF - A battery management system includes at least one slave battery management system and a master battery management system. The slave battery management system outputs a ready signal when power is applied thereto, and the master battery management system provides a synchronization start signal to the slave battery management system in response to the ready signal. The master battery management system periodically provides a synchronization reset signal to the slave battery management system. | 11-25-2010 |
Yusai Murakami, Hamamatsu-Shi JP
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20090261836 | METHOD AND APPARATUS FOR ESTIMATING THE CHARGE/DISCHARGE ELECTRICITY AMOUNT OF SECONDARY BATTERIES - An apparatus estimates charge/discharge electricity amount without being affected by current measurement error. Under specific selection conditions, a no-load voltage calculation part uses pairs of data consisting of current data I(n) and voltage data V(n) corresponding to the current data to calculate a no-load voltage V | 10-22-2009 |
Yusai Murakami, Yongin-Si KR
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20120091946 | Battery management system and method of estimating battery state of charge - A battery management system and method accurately estimate a state of charge (SOC) of a battery. For this, the battery management system may include a unit SOC calculator calculating a unit SOC by using a charge/discharge current of a battery, an electromotive force SOC calculator calculating an electromotive force SOC using an electromotive force of the battery; a corrector calculating a compensation amount using the electromotive force SOC and a previous SOC, and an SOC calculator calculating a current SOC using the unit SOC, the previous SOC, and the compensation amount. | 04-19-2012 |
20120200264 | BATTERY MANAGEMENT SYSTEM, METHOD OF REMOVING POLARIZATION VOLTAGE OF BATTERY, AND ESTIMATING STATE OF CHARGE OF BATTERY - A battery management system according to an exemplary embodiment of the present invention includes: a current measuring unit for sampling a charge current and a discharge current of a battery; a charge and discharge amount calculator for calculating a charge and discharge amount corresponding to a difference between the sampled charge current and the sampled discharge current; a polarization voltage calculator for calculating a polarization voltage corresponding to the charge and discharge amount and a temperature of the battery; and a pulse generator for applying a polarization voltage reset pulse for the battery to remove the polarization voltage. | 08-09-2012 |
Yusai Yoshimura, Saitama JP
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20140141345 | FUEL CELL SYSTEM - A fuel cell system that can supply fuel gas appropriately is provided. The fuel cell system includes an injector | 05-22-2014 |
20140147760 | FUEL CELL SYSTEM - Provided is a fuel-cell system having a control device which controls driving of a first fuel supply device and a second fuel supply device. The control device includes, a driving-interval setting unit which sets first driving intervals for the first fuel supply device and second driving intervals for the second fuel supply device, a first fuel-supply-device control unit which sets valve-open durations of the first fuel supply device according to the first driving intervals, and a second fuel-supply-device control unit which sets valve-open durations of the second fuel supply device according to the second driving intervals. The driving-interval setting unit sets the second driving intervals to be shorter than the first driving intervals. | 05-29-2014 |