Title:
ELECTRIC INDUSTRIAL VEHICLE
Document Type and Number:
WIPO Patent Application WO/2011/024707
Kind Code:
A1
Abstract:
Disclosed is an electric industrial vehicle that is provided with a power supply system device that can drive a drive unit in a highly efficient manner during both regeneration and powering by means of a simple computation method. The power supply system device (3) of the electric industrial vehicle is configured from a lead battery (2), a high-capacitance capacitor (13), a DC/DC converter that controls the voltage of the high-capacitance capacitor (13), and a controller (11) that controls the charge and discharge power of the lead battery (2) and the high-capacitance capacitor (13). When the electric motors (4, 6) that are the drive sources of the electric industrial vehicle are performing a powering operation, the controller (11) decides the current distribution of the lead battery (2) and the high-capacitance capacitor (13) on the basis of the internal resistance of the lead battery (2) and the high-capacitance capacitor (13) and the required power load of the electric motors (4, 6) such that losses are minimized in the power supply system device (3).
Inventors:
KANEKO Satoru (HITACHI LTD., 1-1, Omikacho 7-chome, Hitachi-sh, Ibaraki 92, 〒3191292, JP)
金子 悟 (〒92 茨城県日立市大みか町七丁目１番１号 株式会社日立製作所 日立研究所内 Ibaraki, 〒3191292, JP)
IKIMI Takashi (HITACHI CONSTRUCTION MACHINERY CO. LTD., Tsuchiura Works, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
伊君 高志 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社 土浦工場 知的財産部内 Ibaraki, 〒3000013, JP)
IZUMI Shiho (HITACHI LTD., 1-1, Omikacho 7-chome, Hitachi-sh, Ibaraki 92, 〒3191292, JP)
金子 悟 (〒92 茨城県日立市大みか町七丁目１番１号 株式会社日立製作所 日立研究所内 Ibaraki, 〒3191292, JP)
IKIMI Takashi (HITACHI CONSTRUCTION MACHINERY CO. LTD., Tsuchiura Works, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
伊君 高志 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社 土浦工場 知的財産部内 Ibaraki, 〒3000013, JP)
IZUMI Shiho (HITACHI LTD., 1-1, Omikacho 7-chome, Hitachi-sh, Ibaraki 92, 〒3191292, JP)
Application Number:
JP2010/064012
Publication Date:
March 03, 2011
Filing Date:
August 19, 2010
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY CO., LTD. (5-1 Koraku 2-chome, Bunkyo-ku Tokyo, 63, 〒1128563, JP)
日立建機株式会社 (〒63 東京都文京区後楽二丁目５番１号 Tokyo, 〒1128563, JP)
KANEKO Satoru (HITACHI LTD., 1-1, Omikacho 7-chome, Hitachi-sh, Ibaraki 92, 〒3191292, JP)
金子 悟 (〒92 茨城県日立市大みか町七丁目１番１号 株式会社日立製作所 日立研究所内 Ibaraki, 〒3191292, JP)
IKIMI Takashi (HITACHI CONSTRUCTION MACHINERY CO. LTD., Tsuchiura Works, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
伊君 高志 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社 土浦工場 知的財産部内 Ibaraki, 〒3000013, JP)
日立建機株式会社 (〒63 東京都文京区後楽二丁目５番１号 Tokyo, 〒1128563, JP)
KANEKO Satoru (HITACHI LTD., 1-1, Omikacho 7-chome, Hitachi-sh, Ibaraki 92, 〒3191292, JP)
金子 悟 (〒92 茨城県日立市大みか町七丁目１番１号 株式会社日立製作所 日立研究所内 Ibaraki, 〒3191292, JP)
IKIMI Takashi (HITACHI CONSTRUCTION MACHINERY CO. LTD., Tsuchiura Works, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
伊君 高志 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社 土浦工場 知的財産部内 Ibaraki, 〒3000013, JP)
International Classes:
B60L11/18; B60L7/14; H01M10/48; H02J7/00; B60L1/00
Attorney, Agent or Firm:
The Patent Body Corporate TAKEWA INTERNATIONAL PATENT OFFICE (Kashiwaya Bldg, 6-13 Nishishinbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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