Patents by Inventor Tsuyoshi Kai
Tsuyoshi Kai 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: 10073128Abstract: A leak detection device includes a pulse signal outputting portion that outputs predetermined pulse signals to a positive connecting wire connected to a positive side of a battery and a negative connecting wire connected to a negative side of the battery. A response waveform detecting portion of the leak detection device detects a positive response waveform for the pulse signal output to the positive connecting wire and a negative response waveform for the pulse signal output to the negative connecting wire. An amplitude ratio calculating portion calculates an amplitude ratio based on the positive response waveform and the negative response waveform, and a leak detecting portion detects a leak between the battery and a ground based on the amplitude ratio.Type: GrantFiled: December 28, 2012Date of Patent: September 11, 2018Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yuji Yoshioka, Tsuyoshi Kai, Akihiko Kudo, Masahiro Ueda
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Publication number: 20150168474Abstract: A leak detection device includes a pulse signal outputting portion that outputs predetermined pulse signals to a positive connecting wire connected to a positive side of a battery and a negative connecting wire connected to a negative side of the battery. A response waveform detecting portion of the leak detection device detects a positive response waveform for the pulse signal output to the positive connecting wire and a negative response waveform for the pulse signal output to the negative connecting wire. An amplitude ratio calculating portion calculates an amplitude ratio based on the positive response waveform and the negative response waveform, and a leak detecting portion detects a leak between the battery and a ground based on the amplitude ratio.Type: ApplicationFiled: December 28, 2012Publication date: June 18, 2015Applicant: Hitachi Automotive Systems, Ltd.Inventors: Yuji Yoshioka, Tsuyoshi Kai, Akihiko Kudo, Masahiro Ueda
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Patent number: 8896273Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: GrantFiled: July 25, 2012Date of Patent: November 25, 2014Assignees: Hitachi, Ltd., Shin-Kobe Electric Machinery Co., Ltd.Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai
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Publication number: 20120286734Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: ApplicationFiled: July 25, 2012Publication date: November 15, 2012Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai
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Patent number: 8283892Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: GrantFiled: August 20, 2007Date of Patent: October 9, 2012Assignees: Hitachi, Ltd., Shin-Kobe Electric Machinery Co., Ltd.Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai
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Patent number: 8253382Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: GrantFiled: December 22, 2008Date of Patent: August 28, 2012Assignees: Hitachi, Ltd., Shin-Kobe Electric Machinery Co., Ltd.Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai
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Patent number: 8207704Abstract: A cell controller having excellent productivity is provided. A cell-con 80 has 12 ICs IC-1 to IC-12 mounted on a substrate, and these ICs detect voltages of respective cells constituting a cell pack, perform capacity adjustment on the respective cells, and are mounted two by two on rectangular longer sides of a rectangular continuous straight line L-L? defined on a substrate from the IC-1 on a highest potential side to the IC-12 on a lowest potential side continuously in order of potential differences of the corresponding cell packs. Distances between the rectangular shorter sides of the rectangular continuous straight line L-L? are the same. On the cell-con 80, between the IC-1 to IC-12 having different ground voltages, each of the ICs has signal output terminals connected to signal input terminals of a lower order IC respectively in an electrically non-insulated state.Type: GrantFiled: October 6, 2011Date of Patent: June 26, 2012Assignee: Hitachi Vehicle Energy, LtdInventors: Tsuyoshi Kai, Tunemi Aiba, Akihiko Kudo, Yoshinori Aoshima, Akihiko Emori
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Patent number: 8169190Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: GrantFiled: April 6, 2009Date of Patent: May 1, 2012Assignees: Hitachi, Ltd., Shin-Kobe Electric Machinery Co., Ltd.Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai
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Publication number: 20120052345Abstract: A cell controller having excellent productivity is provided. A cell-con 80 has 12 ICs IC-1 to IC-2 mounted on a substrate, and these ICs detect voltages of respective cells constituting a cell pack, perform capacity adjustment on the respective cells, and are mounted two by two on rectangular longer sides of a rectangular continuous straight line L-L? defined on a substrate from the IC-1 on a highest potential side to the IC-12 on a lowest potential side continuously in order of potential differences of the corresponding cell packs. Distances between the rectangular shorter sides of the rectangular continuous straight line L-L? are the same. On the cell-con 80, between the IC-1 to IC-12 having different ground voltages, each of the ICs has signal output terminals connected to signal input terminals of a lower order IC respectively in an electrically non-insulated state.Type: ApplicationFiled: October 6, 2011Publication date: March 1, 2012Applicant: HITACHI VEHICLE ENERGY, LTD.Inventors: Tsuyoshi KAI, Tunemi AIBA, Akihiko KUDO, Yoshinori AOSHIMA, Akihiko EMORI
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Patent number: 8106661Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: GrantFiled: July 30, 2009Date of Patent: January 31, 2012Assignees: Hitachi, Ltd., Shin-Kobe Electric Machinery Co., Ltd.Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai
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Patent number: 8098047Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: GrantFiled: August 6, 2009Date of Patent: January 17, 2012Assignees: Hitachi, Ltd., Shin-Kobe Electric Machinery Co., Ltd.Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai
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Patent number: 8058842Abstract: A cell controller having excellent productivity is provided. A cell-con 80 has 12 ICs IC-1 to IC-12 mounted on a substrate, and these ICs detect voltages of respective cells constituting a cell pack, perform capacity adjustment on the respective cells, and are mounted two by two on rectangular longer sides of a rectangular continuous straight line L-L? defined on a substrate from the IC-1 on a highest potential side to the IC-12 on a lowest potential side continuously in order of potential differences of the corresponding cell packs. Distances between the rectangular shorter sides of the rectangular continuous straight line L-L? are the same. On the cell-con 80, between the IC-1 to IC-12 having different ground voltages, each of the ICs has signal output terminals connected to signal input terminals of a lower order IC respectively in an electrically non-insulated state.Type: GrantFiled: July 30, 2007Date of Patent: November 15, 2011Assignee: Hitachi Vehicle Energy, LtdInventors: Tsuyoshi Kai, Tunemi Aiba, Akihiko Kudo, Yoshinori Aoshima, Akihiko Emori
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Patent number: 7888945Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: GrantFiled: April 1, 2009Date of Patent: February 15, 2011Assignee: Hitachi, Ltd.Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai
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Publication number: 20090284224Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: ApplicationFiled: April 6, 2009Publication date: November 19, 2009Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai
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Publication number: 20090284223Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: ApplicationFiled: July 30, 2009Publication date: November 19, 2009Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai
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Publication number: 20090261781Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: ApplicationFiled: April 1, 2009Publication date: October 22, 2009Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai
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Publication number: 20090169987Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: ApplicationFiled: December 22, 2008Publication date: July 2, 2009Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai
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Patent number: 7528581Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: GrantFiled: June 27, 2006Date of Patent: May 5, 2009Assignees: Shin-Kobe Electric Machinery Co., Ltd., Hitachi, Ltd.Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai
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Publication number: 20080079395Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: ApplicationFiled: August 20, 2007Publication date: April 3, 2008Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai
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Publication number: 20080067978Abstract: Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order. control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.Type: ApplicationFiled: August 20, 2007Publication date: March 20, 2008Inventors: Hideki Miyazaki, Akihiko Emori, Akihiko Kudo, Tsuyoshi Kai