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Power supply device, image forming device and power supply device
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A technology of power supply device and charging current, which is applied in circuit devices, battery circuit devices, image communication, etc., can solve the problems of poor response performance and difficulty in charging the power storage part.
Active Publication Date: 2016-10-05
RICOH KK
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[0008] However, Patent Document 1 needs to target fixed loads
For this reason, for fluctuating loads such as fixing heaters, when the load fluctuates rapidly, the response performance at the maximum electric power point deteriorates, and it is difficult to effectively use the remaining electric energy after excluding the electric energy consumed by the fixing heaters in solar power generation. Charge the power storage unit
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no. 1 approach
[0026] figure 1 It is a cross-sectional view of the schematic configuration of the image forming apparatus according to the first embodiment of the present invention.
[0027] The image forming apparatus 1 includes an ADF2, an image reading device 3, a writing unit 4, a printing unit 5, a photosensitive drum 6, a developing device 7, a conveyor belt 8, a fixing device 9, and a platen 10.
[0028] figure 1 The image forming apparatus 1 shown is a digital copier, equipped with functions such as copying, printing, and facsimile.
[0029] The image forming apparatus 1 can switch to the copy function, print function and fax function in sequence through the application software switching key provided on the operation part. When the copy function is selected, it is the copy mode, when the print function is selected, it is the print mode, and when the printing function is selected, it is the printing mode. The function is in the fax mode.
[0030] The following reference figure 1 An example i...
no. 2 approach
[0084] Image 6 It is a block diagram of the structure of the image forming apparatus 40 according to the second embodiment of the present invention. Omit here Image 6 Has and figure 1 Description of parts with the same symbols.
[0085] Image 6 The block diagram shown is characterized by figure 2 In the block diagram shown, the current detection unit 27 is deleted, and the fixing thermistor 33 that detects the fixing temperature and the ambient temperature detection unit 34 that detects the ambient temperature of the image forming apparatus 1 are added.
[0086] Based on the fixing power consumption data stored in the ROM of the storage unit 30c, the fixing heater current controlled by the fixing heater is predicted, so as in the first embodiment, the maximum electric power point Pmax can be instantly returned, and the solar power generation power is almost no Loss, can generate electricity with good efficiency.
[0087] Furthermore, by detecting the ambient temperature by the a...
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Abstract
The invention relates to a power supply which uses solar energy to generate power and supplies power to a variable load and an image forming device having the power supply device. The power supply is aimed to effectively use solar energy to generate power to charge the storage battery when using the variable load, the electric consumption quantity is variable. The power supply forms a control part (30) which calculates electricity generation power of the solar generation part (25) according to generation current (10) and generation voltage (V0) and uses the last time charging current (12 (t-1)) to subtract the load current I1 (t-1) which is detected by the current detection part 27 and subtract the load current (I1 (t)) detected by this time and then adds with prescribed weak current sigma I to solve first charging current (12 (t)); furthermore, when current power generation power (W0') is greater than generated power W0 of last time, first charging current (I2(t)) is set as charging current of a charger (28) and the generated powder maintains maximum.
Description
Technical field [0001] The present invention relates to a power supply device that uses solar power generation to supply power to a variable load such as a fixing heater, and an energy-saving technology in an image forming apparatus having the power supply device. Background technique [0002] The conventional image forming apparatus can receive solar power generated by a solar power generation unit installed on the roof of a building to supply electric power to a variable load such as a fixing heater. [0003] The above-mentioned image forming apparatus is provided with a switch SW for switching the power supply from the solar power generation unit to the commercial power supply when solar power generation cannot be performed without sunlight, such as at night. [0004] Patent Document 1 (JP 2013-61606 A) discloses an example of the above-mentioned image forming apparatus. [0005] The technical solution disclosed in Patent Document 1 aims to directly supply power to a fixed load wit...
Claims
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Application Information
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