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Operating machine

A technology of working machinery and electric motors, which is applied in the field of working machinery and can solve problems such as deterioration

Inactive Publication Date: 2011-03-23
SUMITOMO HEAVY IND LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Generally, if the battery is kept in a state of high charging rate, it will deteriorate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0056] "Implementation 1"

[0057] figure 1 It is a side view showing the hybrid construction machine according to the first embodiment.

[0058] On the undercarriage 1 of this hybrid construction machine, an upper revolving body 3 is mounted via a revolving mechanism 2 . In addition, in the upper slewing body 3, in addition to the boom 4, the boom 5, and the lifting magnet 6, and the boom cylinder 7, the boom cylinder 8, and the bucket cylinder 9 for hydraulically driving these, there are also mounted Cockpit 10 and power source are arranged.

[0059] "the whole frame"

[0060] figure 2 It is a block diagram showing the configuration of the hybrid construction machine according to the first embodiment. in the figure 2 Among them, the mechanical power system is represented by a double line, the high-pressure hydraulic line is represented by a solid line, the pilot line is represented by a dotted line, and the electric drive or control system is represented by a dotted ...

Embodiment approach 2

[0146] "Implementation 2"

[0147] The hybrid type construction machine according to the second embodiment differs from the first embodiment in that the charge amount (SOC) of the capacitor 19 is set according to the rotation speed of the engine 11 . Therefore, an electrical signal indicating the rotational speed of the engine 11 is input to the controller 50 .

[0148]In Embodiment 2, the controller 50 monitors the engine speed transmitted from the control device (for example, ECU (Electronic Control Unit)) of the engine 11 .

[0149] In addition, here, for example, if the rotational speed of the engine 11 when idling is set to 1000 rpm and the maximum allowable rotational speed is set to 2000 rpm, the threshold for determination may be set to, for example, 1200 rpm.

[0150] Here, the rotational speed of the engine 11 is switched by a displacement switch disposed together with the operating device 26 in the cabin 10 . For example, if the rotational speed of the engine 11 w...

Embodiment approach 3

[0172] "Implementation Mode 3"

[0173] The hybrid construction machine according to Embodiment 3 is different from Embodiment 1 in that the capacitors are set according to the presence or absence of operation of levers 26A and 26B and pedal 26C (hereinafter, in Embodiment 3, abbreviated as "rod 26A, etc."). 19 SOC. Therefore, the controller 50 is configured to input an electrical signal indicating the presence or absence of operation of the lever 26A or the like transmitted from the pressure sensor 29 .

[0174] The hybrid construction machine according to the third embodiment determines the presence or absence of work based on the presence or absence of operation of the lever 26A or the like.

[0175] In addition, since other structures are based on the hybrid type construction machine of Embodiment 1, repeated description is omitted.

[0176] "Setting of charging capacity (SOC)"

[0177] In the hybrid construction machine according to Embodiment 3, the charged capacity (...

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PUM

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Abstract

An operating machine comprises a first electric motor used for operations, a second electric motor used for applications other than the operations, a first inverter circuit connected to the first electric motor, a second inverter circuit connected to the second electric motor, a secondary battery connected to the first and second inverter circuits, and a controller for driving the first and second inverter circuits. The controller has a discharge mode for discharging electric power stored in the secondary battery. In the discharge mode, the controller disables the first inverter circuit and drives the second inverter circuit to electrically operate the second electric motor, thereby discharging the secondary battery. This makes it possible to reduce the changing rate and achieve the extension of the life of the capacitor.

Description

technical field [0001] The invention relates to a working machine. Background technique [0002] Conventionally, working machines including a motor generator for assisting an engine have included a storage battery such as a capacitor for supplying electric power to the motor generator and charging regenerative power. Since such capacitors are used in an environment where charging and discharging are repeated, various studies are being made to increase the lifespan. [0003] For example, in view of the fact that if the voltage value of the capacitor rises too much, the capacitor will deteriorate, it is proposed that a discharge set value is set for the voltage value of the capacitor, and when the charging voltage of the capacitor exceeds the discharge set value at the end of the operation of the machine tool , by discharging so that the voltage value of the capacitor becomes lower than the discharge setting value, the life of the capacitor is extended. The discharged electr...

Claims

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Application Information

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IPC IPC(8): B60L3/00B60K6/485B60L11/14B60W10/26B60W20/00B66C1/08B66F9/24H02J7/00B60L50/16
CPCB60W2510/0638B60L11/1861Y02T10/7044B60L1/003B60W10/26Y02T10/6278B60Y2400/114Y02T10/6217B66C1/04B60L2240/441B60K6/46B60W20/00Y02T10/7022B60Y2200/41B60W2510/244B60K1/02B60L1/20B60Y2200/15B60W10/08B60L2200/40B60Y2200/412E02F9/20B60W20/106B66C13/18B66F9/20Y02T10/705B60K6/20B60L11/123B60Y2200/25Y02T10/7077B60K6/365Y02T10/7005H05K7/20927B60W20/13B60L1/02B60L3/003B60L3/0046B60L3/0061B60L7/14B60L2200/42B60L2210/12B60L2210/14B60L2210/40B60L2240/36B60L2240/547B60L2250/12B60L2250/22B60L2250/24B60L50/40B60L50/61B60L58/12B60L58/25Y02T10/62Y02T10/70Y02T10/72B60L50/16H02J7/00B60K6/485Y02T10/7072
Inventor 柳泽诚神林英明
Owner SUMITOMO HEAVY IND LTD
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