发明名称 |
POWER SUPPLY DEVICE AND CONTROL METHOD FOR POWER SUPPLY |
摘要 |
A power supply device includes: a main power supply configured to feed power to a load with constant-voltage output using an external power supply; an auxiliary power supply configured to feed power to the load using an internal power storage unit; a constant-current/constant-voltage switching power supply configured to feed a part of current flowing through the load by which part the current exceeds an upper limit value of output current of the main power supply instructed by a current upper-limit instruction unit, with the constant-current output from the auxiliary power supply; and an output switching unit switching the constant-current/constant-voltage switching power supply from the constant-current output to the constant-voltage output when a power cut monitoring unit determines stop of power supply from the external power supply.
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申请公布号 |
US2013099573(A1) |
申请公布日期 |
2013.04.25 |
申请号 |
US201213652688 |
申请日期 |
2012.10.16 |
申请人 |
NAKAJIMA MIKIO;YANO TETSUYA;NAKAGAWA HIDEO;YOSHIOKA YU |
发明人 |
NAKAJIMA MIKIO;YANO TETSUYA;NAKAGAWA HIDEO;YOSHIOKA YU |
分类号 |
H02J9/00 |
主分类号 |
H02J9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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