Hybrid operating machinery
A working machine and hybrid technology, applied in hybrid vehicles, motor vehicles, earth movers/shovels, etc., can solve problems such as accelerated deterioration and shortened capacitor life, and achieve the effect of suppressing deterioration
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Embodiment 1
[0041] figure 1 A side view of the hybrid working machine of Example 1 is shown in . A revolving upper body 3 is mounted on an undercarriage (base body) 1 via a revolving mechanism 2 . The swing mechanism 2 includes an electric motor (motor), and rotates the upper swing body 3 clockwise or counterclockwise. A boom 4 is attached to the upper revolving body 3 . The boom 4 swings in the vertical direction with respect to the upper revolving structure 3 by a hydraulically driven boom cylinder 7 . An arm 5 is attached to the front end of the boom 4 . The arm 5 swings in the front-rear direction relative to the boom 4 via an arm cylinder 8 driven by hydraulic pressure. A bucket 6 is attached to the front end of the arm 5 . The bucket 6 swings vertically relative to the arm 5 via a hydraulically driven bucket cylinder 9 . A cab 10 for accommodating a driver is also mounted on the upper revolving structure 3 .
[0042] figure 2 A block diagram representing a hybrid working m...
Embodiment 2
[0128] Below, refer to Figure 11A ~ Figure 11C , Embodiment 2 will be described. In the first embodiment described above, the determination of whether to limit the output of the capacitor is performed based on the internal resistance of the capacitor 19 ( Figure 5 and Figure 8 step SB5). In the second embodiment, whether to limit the output is determined based on the capacitance of the capacitor. Hereinafter, a method for measuring the electrostatic capacitance of the capacitor 19 will be described.
[0129] Figure 11A A diagram of an equivalent circuit when an electric double layer capacitor is used for the capacitor 19 is shown in the middle. In an electric double layer capacitor, the active layer functions as an electrode that complements negative ions (anions) and positive ions (cations). A plurality of pores are present in the active layer. The electrostatic capacitance at the surface of the active layer is largely different from the internal resistance in the ...
Embodiment 3
[0143] Below, refer to Figure 12A ~ Figure 14C Example 3 will be described. Example 3 Figure 10B The processing of the charging rate calculation block 33C shown is different from the processing of the above-described first embodiment, and the other configurations are the same as those of the first embodiment.
[0144] Figure 12A , represents the transient characteristics of the internal resistance R when the charging and discharging current of the capacitor 19 changes from a 0 state to when the discharging current starts to flow. Figure 12C , represents changes in the charging and discharging current of the capacitor 19 . at time t 1 The discharge current starts to flow. Actually the discharge current decreases with a constant time constant, but the transition period for the internal resistance R to return to a steady state is much shorter than the time constant of the discharge current. Therefore, when considering the transient characteristics of the internal resist...
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