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1. 发明专利

JP2000278806A POWER SUPPLY SYSTEM FOR ELECTRIC VEHICLE 失效
公开(公告)号：JP2000278806A
公开(公告)日：2000-10-06
申请号：JP7598799
申请日：1999-03-19
申请人： NISSAN DIESEL MOTOR CO , OKAMURA KENKYUSHO KK , POWER SYSTEM KK , FUJI ELECTRIC CO LTD
发明人： WATANABE YASUTO , YAMADA ATSUSHI , OKAMURA MICHIO , YAMAGISHI MASAAKI , KINOSHITA SHIGENORI
IPC分类号： H02J7/00 , B60K6/20 , B60K6/28 , B60K6/46 , B60L11/18 , B60L50/10 , B60W10/26 , B60W20/00 , H02J7/14 , B60L11/02
摘要： PROBLEM TO BE SOLVED: To attain reduction in size and weight and high efficiency. SOLUTION: This system is provided with a main storage device supplying power to a traveling motor 6, three battery blocks 10, 11, 12 constituted of electric double-layer capacitor cells 100, 110, 120 in the main storage device, and a block connection switching circuit 13 switching the number of the battery blocks 10, 11, 12 connected in series according to a voltage change by the charging or discharging of the electric double-layer capacitor cells 100, 110, 120 so that the voltage Vc of the main storage device 4 may be a prescribed value V1 or higher.

2. 发明专利

JP2002125303A POWER SUPPLY FOR VEHICLE 失效
公开(公告)号：JP2002125303A
公开(公告)日：2002-04-26
申请号：JP2000315768
申请日：2000-10-16
申请人： OKAMURA KENKYUSHO KK , NISSAN DIESEL MOTOR CO
发明人： OKAMURA MICHIO , ARAKI SHUICHI , NOZU IKUROU , SASAKI MASAKAZU
IPC分类号： B60W20/00 , B60K6/20 , B60K6/28 , B60K6/46 , B60L11/08 , B60L11/18 , B60L50/13 , B60L50/15 , B60W10/26 , H02M7/48 , B60K6/02 , B60L11/12
摘要： PROBLEM TO BE SOLVED: To provide a power supply for a vehicle, capable of controlling an output voltage within a voltage range in which an electric motor will not become inefficient, even if there is voltage drop in each capacitor cell due to discharging of the capacitors. SOLUTION: In a power supply used for a vehicle that drives the electric motor 6 to travel using electric power accumulated in an electricity-storing device 4, the electricity-storing device is structured with at least three divided groups of capacitors, 41, 42, 43, each having a plurality of electric double-layer capacitor cells. The device also comprises a voltage-detecting means 40, that detects the voltage of the electricity-storing device and change-over means 401, 402, 403 that change over the connection of the first and second capacitors based on the detection result of the voltage-detecting means. The change-over means connects the first group of capacitors parallel to the second group of them in a normal state, and connects them in series connection, when the voltage drop of the electricity-storing device is detected by the voltage-detecting means.

3. 发明专利

JP2001197660A POWER SYSTEM STABILIZING SYSTEM 失效
公开(公告)号：JP2001197660A
公开(公告)日：2001-07-19
申请号：JP2000003076
申请日：2000-01-12
申请人： HIYAMA TAKASHI , OKAMURA KENKYUSHO KK , POWER SYSTEM KK
发明人： HIYAMA TAKASHI , OKAMURA MICHIO , YAMAGISHI MASAAKI
IPC分类号： H02J7/34 , H02J1/00 , H02J3/32
摘要： PROBLEM TO BE SOLVED: To provide a simplified, low-cost system, which assures power feeding over a long period of time under high energy density. SOLUTION: A power system stabilizing system for controlling the input and the output of current by connecting a capacitor storage apparatus 1 to the power system, in order to stabilize the system through improvement of damping during the transition comprises a capacitor storage apparatus 1, including a parallel monitor 4 consisting of a plurality of capacitors C connected in parallel for detecting and controlling the charging voltage and current, an AC/DC converter 2 connected between the power system and capacitor storage apparatus 1 for the conversion of AC and DC to charge or discharge the capacitor storage apparatus 1 and a system monitor and control apparatus 3 for controlling the AC/DC converter 2 and capacitor storage apparatus 1 by monitoring the power system. Thereby, charging and discharging of momentary high power are performed for the capacitor storage apparatus 1, by monitoring the power system with the system monitor and control apparatus 3.

4. 发明专利

JP2000295795A CAPACITOR MODULE, CAPACITOR BANK USING THE SAME AND CAPACITOR ACCUMULATING WAREHOUSE 失效
公开(公告)号：JP2000295795A
公开(公告)日：2000-10-20
申请号：JP2000028256
申请日：2000-02-04
申请人： JEOL LTD , OKAMURA KENKYUSHO KK , POWER SYSTEM KK
发明人： OKAMURA MICHIO , YAMAGISHI MASAAKI , MOGAMI AKINORI
IPC分类号： H01G11/10 , H01G2/04 , H01G9/28 , H01G11/00 , H01G11/42 , H01G11/82 , H02J1/00 , H02J15/00 , H01G9/155
摘要： PROBLEM TO BE SOLVED: To realize a capacitor module that can enhance a filling efficiency to raise storage density of power energy and a capacitor bank using the same capacitor module and capacitor storage warehouse. SOLUTION: A plurality of capacitor cells connected in series is accommodated within a box type capacitor module P. A heat radiator is mounted at the end surface of module P and this heat radiator is also provided with a parallel monitor R that is connected in parallel with each capacitor cell. A capacitor bank is formed by stacking a plurality of stages such capacitor modules. In each module P, the heat radiating surface is exposed at the external area of the bank and is held in such a manner that it can be individually removed from the capacitor bank. A pair of these capacitor banks are arranged back to back with the heat radiating surface located in the external side and moreover such pair is arranged in the vertical and lateral directions by providing lead space and path of the module.

5. 发明专利

JP2000217251A DEVICE FOR CHARGING CAPACITOR AND DEVICE FOR STORING ELECTRICITY IN CAPACITOR HAVING RELAXED CHARGING FUNCTION 失效
公开(公告)号：JP2000217251A
公开(公告)日：2000-08-04
申请号：JP997599
申请日：1999-01-19
申请人： OKAMURA KENKYUSHO KK , POWER SYSTEM KK , JEOL LTD
发明人： OKAMURA MICHIO , SHIMIZU MASAAKI , MOGAMI AKINORI
IPC分类号： H02J7/02 , H02J1/00 , H02J7/10
摘要： PROBLEM TO BE SOLVED: To initialize a capacitor for plural times of charging cycles by changing over from a constant current to charging to a relaxed charging with a constant voltage. SOLUTION: Devices are provided with a switching means 1, which adjusts an output by switching input power and charges capacitors C1, C2, a current detecting means 4 for an output end, a voltage detecting means 5, a control means 2 which controls the switching means 1, in such a way that a charging current or voltage can reach a target value based on a current target value 6 and a voltage target value 7, a voltage sample holding means 3 which holds a charging voltage detected by the voltage detecting means 5 based on a sampling signal. The control means 2 charges the capacitors in the constant current mode upon the start of charging. If the charging voltage is held by the voltage sample holding means 3 based on the sampling signal, the charging voltage held is treated as the voltage target value, and the charging mode is changed over so as to charge the capacitors in relaxed charging mode.

6. 发明专利

JP2000050495A MONITORING AND CONTROL APPARATUS FOR CHARGING OF CAPACITOR 失效
公开(公告)号：JP2000050495A
公开(公告)日：2000-02-18
申请号：JP21074998
申请日：1998-07-27
申请人： OKAMURA KENKYUSHO KK , POWER SYSTEM KK , JEOL LTD
发明人： OKAMURA MICHIO , MOGAMI AKINORI
IPC分类号： H02J1/00 , H02J7/02 , H02J7/04
摘要： PROBLEM TO BE SOLVED: To reduce a heat loss due to initialization of a capacitor by a method wherein a reference voltage is set at a voltage at several fractions of a fully charged voltage and initialization of a charging operation is corrected. SOLUTION: Respective capacitors are discharged completely. The designated signal SHn of a maximum capacitor, e.g. Cn, is set at 'H', and flip-flop 12i and a flip-flop 13i are reset. Thereby, selection signals S11,... Sn1 of a changeover switch at a parallel monitor are set at 'L', and selection signals S12,... Sn2 are set at 'H'. As a result, a reference voltage at a low voltage used to correct initialization of a charging operation is connected to respective comparison terminals. When the charging operation is started, the charging voltage of the respective capacitors is raised so as to reach the reference voltage sequentially. The output of a comparator CMP1 is set at 'H', the selection signals S11,... Sn1 are set at 'H', and the selection signals S12,... Sn2 are inverted to 'L'. Consequently, a finish signal SB which corrects the initialization as the output of an OR gate 17 is set at 'H', all the flip-flops are reset, the output is returned to 'H', and the correction of the initialization of the charging operation is finished.

7. 发明专利

JPH11299112A SERIES-PARALLEL SWITCHING POWER SUPPLY DEVICE 失效
公开(公告)号：JPH11299112A
公开(公告)日：1999-10-29
申请号：JP9757598
申请日：1998-04-09
申请人： OKAMURA KENKYUSHO KK , TOKYO ELECTRIC POWER CO , POWER SYSTEM KK , JEOL LTD
发明人： OKAMURA MICHIO , OSHIMA MASAAKI , YAMAGISHI MASAAKI , MOGAMI AKINORI
IPC分类号： H02J7/00 , H02J1/00
摘要： PROBLEM TO BE SOLVED: To avoid a cross current which is produced by a potential difference between a pair of batteries, when the charging method of the pair of batteries are switched from the parallel connection charging to the series connection charging. SOLUTION: A power supply device has a pair of batteries C1 and C2 whose voltages are much changed in accordance with charge/discharge values and three switching means which are connected in series to the pair of batteries respectively. The connection of the pair of batteries are switched between the series connection and the parallel connection at a predetermined voltage. Unilateral control rectification devices Q1 and Q2 are connected in series at least to the pair of batteries C1 and C2 respectively as the switching means. The unilateral control rectification devices Q1 and Q2 are connected in the flowing directions of the charging currents of the batteries to limit excessive charging currents or to avoid a cross current which flows from the battery with a higher voltage to the battery with a lower voltage at the time of charging.

8. 发明专利

JP2002142372A CAPACITOR POWER STORAGE SYSTEM 失效
公开(公告)号：JP2002142372A
公开(公告)日：2002-05-17
申请号：JP2000334413
申请日：2000-11-01
申请人： OKAMURA KENKYUSHO KK , POWER SYSTEM KK , JEOL LTD
发明人： OKAMURA MICHIO
IPC分类号： H01G9/26 , H02J1/00 , H02J7/02
摘要： PROBLEM TO BE SOLVED: To detects anomalies in a capacitor, using a simple constitution. SOLUTION: In a power storage system using a capacitor, an anomaly detecting means CMP3, that detects any anomaly in the capacitor C at zero or a low voltage in proximity thereto, is connected in parallel with the capacitor C, and in addition to the detection of the initialization level and the full charge level of the capacitor C, anomaly detection is effectively performed. The anomaly detecting means CMP3 uses a comparator whose threshold is zero or a low voltage in proximity thereto, a comparator for detecting charging in reverse direction, or a third comparator installed in a parallel monitor 1 for detecting full charged capacitor and controlling initialization charging together with the two comparators CMP1 and 2 for full-charged capacitor detection and initialization charging. With the power storage system, high voltage precision is not required for detection, the number of parts to be added to the conventional power storage systems in reduced, and moreover the overall reliability is enhanced, even in a huge power storage system.

9. 发明专利

JP2002118037A ELECTRIC DOUBLE-LAYER CAPACITOR PACK 失效
公开(公告)号：JP2002118037A
公开(公告)日：2002-04-19
申请号：JP2000310748
申请日：2000-10-11
申请人： POWER SYSTEM KK , OKAMURA KENKYUSHO KK
发明人： SHIMIZU MASAHIKO , OKAMURA MICHIO
IPC分类号： H01G11/10 , H01G2/04 , H01G11/22 , H01G11/74 , H01G11/78 , H01G11/80 , H01G9/155
摘要： PROBLEM TO BE SOLVED: To provide an electric double-layer capacitor pack which is superior in long term charge/discharge reliability. SOLUTION: One or more sets of positive poles and negative poles are laminated through the intermediary of a separator for the formation of a unit electric double-layer capacitor, and the unit electric double-layer capacitors are connected into an electric double-layer capacitor pack. The unit electric double- layer capacitors are connected, together with a positive conductive connection lead and a negative conductive connection lead, which are led out in opposite directions at right angles with respect to the direction of lamination of the electrodes of the unit electric double-layer capacitor. The unit electric double- layer capacitors are arranged on the same plane. The entire top surface and undersurface of the unit electric double-layer capacitors are covered with a flexible sheathing material, with which the unit electric double-layer capacitors are sealed. Furthermore, a gap between the unit electric double-layer capacitors is sealed for the formation of an electronic double-layer capacitor pack.

10. 发明专利

JP2001218382A CAPACITOR MODULE HAVING EQUALIZING FUNCTION 失效
公开(公告)号：JP2001218382A
公开(公告)日：2001-08-10
申请号：JP2000028492
申请日：2000-02-07
申请人： OKAMURA KENKYUSHO KK , POWER SYSTEM KK
发明人： OKAMURA MICHIO , YAMAGISHI MASAAKI
IPC分类号： H01G11/00 , H01G11/10 , H01G15/00 , H02J1/00 , H02J7/02 , H01G9/155
摘要： PROBLEM TO BE SOLVED: To revise the difference in the voltage of a plurality of capacitors, connected in series and having low loss in an electronic circuit. SOLUTION: This capacitor module, which has an equalizing function for equalizing a plurality of capacitors connected in series, and control circuits U2, R4, R5, and R9 are connected between two pieces of capacitors C1 and C2 connected in series, a current is compensated, according to the difference of the voltage between the two pieces of capacitors C1 and C2, so that the voltage is equal. The control circuit equalizes only the section of a leaked current, or controls the two capacitors so that their voltages equal, using a linear circuit, using an OP amplifier.

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