Patents by Inventor Segawa Susumu
Segawa Susumu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8704488Abstract: A battery pack and a method of controlling the same is disclosed. The battery pack determines a cell deviation after the battery pack is fully charged or over-discharged, and thus the battery pack can reduce the cell deviation by performing cell balancing.Type: GrantFiled: January 21, 2011Date of Patent: April 22, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Han-Seok Yun, Segawa Susumu, Eui-Jeong Hwang, Se-Sub Sim, Jong-Woon Yang, Beom-Gyu Kim, Jin-Wan Kim
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Patent number: 8669742Abstract: A battery pack, a charging system including the battery pack, and a method of controlling the charging system are disclosed. The battery pack includes a plurality of rechargeable battery cells and a protection circuit for protecting the battery cells. The protection circuit includes an analog front end (AFE) integrated circuit (IC) and a microcomputer. The AFE IC is for supplying an operating voltage of a microcomputer to the microcomputer and to a charging device. Thus, when the battery pack is charged, an abnormal operation of the AFE IC can be detected by the charging device and the charging of the battery pack stopped, thereby preventing an explosion of the battery pack.Type: GrantFiled: February 23, 2011Date of Patent: March 11, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Han-Seok Yun, Segawa Susumu, Eui-Jeong Hwang, Se-Sub Sim, Jong-Woon Yang, Beom-Gyu Kim, Jin-Wan Kim
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Patent number: 8659265Abstract: A battery pack and a method of sensing a voltage of the battery pack are disclosed. The battery pack has more battery cells than an individual cell voltage sensing unit can sense the voltages of. The additional battery cells are sensed using a multi-cell voltage sensing unit and digital processing.Type: GrantFiled: September 15, 2010Date of Patent: February 25, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Jinwan Kim, Jongwoon Yang, Segawa Susumu, Testuya Okada, Euijeong Hwang, Sesub Sim, Hanseok Yun, Beomgyu Kim
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Patent number: 8436575Abstract: A battery identification (ID) setting system effectively managing a plurality of batteries and a method of driving the same. The battery ID setting system having an external terminal includes a master battery management system (BMS) outputting ID setting signals, and a plurality of slave BMSs transmitting battery information signals containing absolute battery IDs and battery potential differences of batteries to the master BMS in response to the ID setting signals. The master BMS receives the battery information signals to assign and store the relative battery IDs corresponding to the absolute battery IDs of the batteries.Type: GrantFiled: July 23, 2010Date of Patent: May 7, 2013Assignee: Samsung SDI Co., Ltd.Inventors: Sesub Sim, Segawa Susumu, Jongwoon Yang, Jinwan Kim
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Patent number: 8350528Abstract: A balancing method for a battery pack includes balancing battery cells near an end of discharge. A deep discharge of the battery cells can be prevented without using an overdischarge control unit. One battery cell balancing method includes: a balancing check condition determination step for determining whether or not a maximum voltage out of voltages of the battery cells is smaller than a reference voltage; a balancing start condition determination step for determining whether or not a residual capacity difference or voltage difference between the individual battery cells exceeds a reference value; a balancing time calculation step for calculating a balancing time for discharging the battery cell that exceeds the reference value; and a balancing operation step for discharging the selected battery cell when the battery cells are under charge or are at rest or when a discharge current of the battery cells is smaller than a reference current.Type: GrantFiled: May 15, 2009Date of Patent: January 8, 2013Assignee: Samsung SDI Co., Ltd.Inventors: Jongwoon Yang, Segawa Susumu, Inkyu Park, Yonguk Kim
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Patent number: 8264206Abstract: A lithium ion battery and a method of power conservation for the same are provided. A bare cell including an electrode assembly with a plurality of electrodes and a protective circuit are coupled together via the plurality of electrodes. The protective circuit includes a remaining charge control circuit that internally detects a long-term nonuse state of the lithium ion battery and blocks current between the bare cell and the protective circuit when the long-term nonuse state is detected. The method includes: detecting whether the battery is used as a power source for an external instrument; determining and recording a value of an accumulated nonuse time when the lithium ion battery was not used as a power source; and blocking an internal current and converting the battery to a long-term nonuse mode when the value of the accumulated nonuse time is above a value indicative of a predetermined time.Type: GrantFiled: May 1, 2009Date of Patent: September 11, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Sesub Sim, Jongwoon Yang, Segawa Susumu
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Patent number: 8138721Abstract: A battery pack and a charging method for the same. The battery pack automatically regulates the full-charge voltage of a battery according to deterioration of lifespan of the battery. The battery pack includes: a rechargeable battery having a positive electrode and negative electrode; a switching module having a charge switching device and discharge switching device electrically connected to a high-current path of the battery; and a battery management unit electrically connected to the switching module to control the charge switching device and discharge switching device, electrically connected to the battery to measure an open-circuit voltage and a use time of the battery, determining whether the battery is deteriorated with reference to at least one of the open-circuit voltage and the use time of the battery, and setting a full-charge voltage of the battery when the deterioration of the battery is determined.Type: GrantFiled: May 18, 2009Date of Patent: March 20, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Jongwoon Yang, Segawa Susumu, Sesub Sim
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Publication number: 20120035874Abstract: A battery pack includes a battery cell; a protective circuit for protecting the battery cell; a first analog/digital (A/D) converter for converting a voltage of the battery cell into a digital value and outputting the digital value as a first voltage value; a second A/D converter for converting the voltage of the battery cell into another digital value and outputting the another digital value as a second voltage value; and a comparator for comparing the first voltage value with the second voltage value and determining whether A/D conversion of the battery pack is normal or defective according to the comparison.Type: ApplicationFiled: February 28, 2011Publication date: February 9, 2012Inventors: Han-Seok Yun, Segawa Susumu, Eui-Jeong Hwang, Se-Sub Sim, Jong-Woon Yang, Beom-Gyu Kim, Jin-Wan Kim
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Publication number: 20120032643Abstract: A battery pack, a charging system including the battery pack, and a method of controlling the charging system are disclosed. The battery pack includes a plurality of rechargeable battery cells and a protection circuit for protecting the battery cells. The protection circuit includes an analog front end (AFE) integrated circuit (IC) and a microcomputer. The AFE IC is for supplying an operating voltage of a microcomputer to the microcomputer and to a charging device. Thus, when the battery pack is charged, an abnormal operation of the AFE IC can be detected by the charging device and the charging of the battery pack stopped, thereby preventing an explosion of the battery pack.Type: ApplicationFiled: February 23, 2011Publication date: February 9, 2012Inventors: Han-Seok Yun, Segawa Susumu, Eui-Jeong Hwang, Se-Sub Sim, Jong-Woon Yang, Beom-Gyu Kim, Jin-Wan Kim
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Publication number: 20120032641Abstract: A battery pack and a method of controlling the same is disclosed. The battery pack determines a cell deviation after the battery pack is fully charged or over-discharged, and thus the battery pack can reduce the cell deviation by performing cell balancing.Type: ApplicationFiled: January 21, 2011Publication date: February 9, 2012Applicant: Samsung SDI Co., Ltd.Inventors: Han-Seok Yun, Segawa Susumu, Eui-Jeong Hwang, Se-Sub Sim, Jong-Woon Yang, Beom-Gyu Kim, Jin-Wan Kim
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Publication number: 20110304299Abstract: A system and method of charging a battery pack in a state in which a battery management unit (BMU) is stably woken up. In one embodiment, the system of charging a battery pack includes a battery including at least one battery cell, a connector electrically connected to the battery and a battery management unit electrically connected to the battery and to the connector, the battery management unit to control charging and discharging operations of the battery, wherein the connector includes an auxiliary power supply terminal to provide a path of supplying auxiliary power to the battery management unit when a total voltage of the battery is less than a wake-up voltage of the battery management unit.Type: ApplicationFiled: May 17, 2011Publication date: December 15, 2011Applicant: SAMSUNG SDI, CO., LTD.Inventors: Jongwoon Yang, Segawa Susumu, Euijeong Hwang, Jinwan Kim, Hanseok Yun, Beomgyu Kim
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Publication number: 20110175574Abstract: A battery identification (ID) setting system effectively managing a plurality of batteries and a method of driving the same. The battery ID setting system having an external terminal includes a master battery management system (BMS) outputting ID setting signals, and a plurality of slave BMSs transmitting battery information signals containing absolute battery IDs and battery potential differences of batteries to the master BMS in response to the ID setting signals. The master BMS receives the battery information signals to assign and store the relative battery IDs corresponding to the absolute battery IDs of the batteries.Type: ApplicationFiled: July 23, 2010Publication date: July 21, 2011Applicant: Samsung SDI Co., Ltd.Inventors: Sesub SIM, Segawa SUSUMU, Jongwoon YANG, Jinwan KIM
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Publication number: 20110121789Abstract: A battery pack includes a battery cell, a charge-blocking unit, a voltage sensing and balancing circuit, and a microcomputer, the microcomputer including a controller that detects at least one selected from the group of abnormal analog-to-digital conversion, abnormal voltage, and abnormal temperature of the battery cell, the controller outputting a charge control signal to the charge-blocking unit to inhibit charging of the battery cell.Type: ApplicationFiled: November 16, 2010Publication date: May 26, 2011Inventors: Jong-Woon Yang, Segawa Susumu, In-Kyu Park, Testyua Okada, Jin-Wan Kim
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Publication number: 20110121837Abstract: A battery pack and a method of sensing a voltage of the battery pack are disclosed. The battery pack has more battery cells than an individual cell voltage sensing unit can sense the voltages of. The additional battery cells are sensed using a multi-cell voltage sensing unit and digital processing.Type: ApplicationFiled: September 15, 2010Publication date: May 26, 2011Applicant: Samsung SDI Co., Ltd.Inventors: Jinwan KIM, Jongwoon Yang, Segawa Susumu, Testuya Okada, Euijeong Hwang, Sesub Sim, Hanseok Yun, Beomgyu Kim
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Publication number: 20110104525Abstract: A battery pack and a driving method thereof. The battery pack includes a battery cell; a charge switch and a discharge switch installed in a charge/discharge line of a battery cell; and a microcontroller to sense and store voltages of the battery cell, to compare the voltages of the battery cell before and after the microcontroller is reset, and to controls the charge switch and the discharge switch based on the sensed voltages of the battery cell such that the microcontroller turns off only one of the charge switch and the discharge switch when there is a change between the voltages of the battery cell before and after the microcontroller is reset.Type: ApplicationFiled: September 13, 2010Publication date: May 5, 2011Inventors: Jinwan Kim, Jongwoon Yang, Segawa Susumu, Testuya Okada, Euijeong Hwang, Sesub Sim, Hanseok Yun, Beomgyu Kim
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Publication number: 20110084662Abstract: A charging control method for a battery pack including a plurality of battery cells in which a full charge voltage value is initially set as a first voltage value. The charging control method includes: charging the plurality of battery cells to the first voltage value in an initial charge mode; and resetting the full charge voltage value to a second voltage value less than the first voltage value in a subsequent charge mode.Type: ApplicationFiled: September 13, 2010Publication date: April 14, 2011Inventors: Jongwoon Yang, Segawa Susumu, Testuya Okada, Inkyu Park
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Publication number: 20110078400Abstract: A method of controlling the operation of a data flash and a battery pack capable of performing the method. In the method, writing, copying, and deleting operations are performed on two data flashes according to status flags recorded in predetermined respective locations of the data flashes. If one of the data flashes is full of data, it is possible to prevent a data flash failure from occurring when a part of the data is copied from the data flash to the other data flash or the data is deleted from the data flash.Type: ApplicationFiled: August 17, 2010Publication date: March 31, 2011Inventors: Jong-Woon Yang, Segawa Susumu, In-Kyu Park, Testuya Okada
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Publication number: 20100194339Abstract: A balancing method for a battery pack includes balancing battery cells near an end of discharge. A deep discharge of the battery cells can be prevented without using an overdischarge control unit. One battery cell balancing method includes: a balancing check condition determination step for determining whether or not a maximum voltage out of voltages of the battery cells is smaller than a reference voltage; a balancing start condition determination step for determining whether or not a residual capacity difference or voltage difference between the individual battery cells exceeds a reference value; a balancing time calculation step for calculating a balancing time for discharging the battery cell that exceeds the reference value; and a balancing operation step for discharging the selected battery cell when the battery cells are under charge or are at rest or when a discharge current of the battery cells is smaller than a reference current.Type: ApplicationFiled: May 15, 2009Publication date: August 5, 2010Inventors: Jongwoon Yang, Segawa Susumu, Inkyu Park, Yonguk Kim
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Patent number: 7638976Abstract: A lithium ion battery and a method of power conservation for the same are provided. A bare cell including an electrode assembly with a plurality of electrodes and a protective circuit are coupled together via the plurality of electrodes. The protective circuit includes a remaining charge control circuit that internally detects a long-term nonuse state of the lithium ion battery and blocks current between the bare cell and the protective circuit when the long-term nonuse state is detected. The method includes: detecting whether the battery is used as a power source for an external instrument; determining and recording a value of an accumulated nonuse time when the lithium ion battery was not used as a power source; and blocking an internal current and converting the battery to a long-term nonuse mode when the value of the accumulated nonuse time is above a value indicative of a predetermined time.Type: GrantFiled: September 20, 2006Date of Patent: December 29, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Sesub Sim, Jongwoon Yang, Segawa Susumu
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Publication number: 20090295332Abstract: A battery pack and a charging method for the same are disclosed. The battery pack automatically regulates the full-charge voltage of a battery according to deterioration of lifespan of the battery. The battery pack includes: a rechargeable battery having a positive electrode and negative electrode; a switching module having a charge switching device and discharge switching device electrically connected to a high-current path of the battery; and a battery management unit electrically connected to the switching module to control the charge switching device and discharge switching device, electrically connected to the battery to measure an open-circuit voltage and a use time of the battery, determining whether the battery is deteriorated with reference to at least one of the open-circuit voltage and the use time of the battery, and setting a full-charge voltage of the battery when the deterioration of the battery is determined.Type: ApplicationFiled: May 18, 2009Publication date: December 3, 2009Applicant: Samsung SDI Co., Ltd.Inventors: Jongwoon Yang, Segawa Susumu, Sesub Sim