Fluid extraction system having power control sub-system and related methods
US-2016380560-A1 · Dec 29, 2016 · US
Electric device
US9431897B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9431897-B2 |
| Application number | US-201313945227-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 18, 2013 |
| Priority date | Jul 24, 2012 |
| Publication date | Aug 30, 2016 |
| Grant date | Aug 30, 2016 |
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Abstract
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Provided is an electric device, including: a secondary battery; and a power supply circuit for dropping an input voltage which is input from the secondary battery to an output voltage and outputting the output voltage to a load, in which the output voltage is stepwise dropped in accordance with the drop of the input voltage.
First claim
Opening claim text (preview).
What is claimed is: 1. An electric device, comprising: a secondary battery; and a power supply circuit for dropping an input voltage which is input from the secondary battery to an output voltage and outputting the output voltage to a load, wherein the power supply circuit drops the output voltage when the input voltage falls below a predetermined first threshold value from the output voltage output when the input voltage is equal to or higher than the predetermined first threshold value; and wherein, when the input voltage transits from a state of being equal to or higher than the predetermined first threshold value to a state of being lower than the predetermined first threshold value, the power supply circuit waits until the state in which the input voltage is lower than the predetermined first threshold value continues for a predetermined first time period and then drops the output voltage. 2. The electric device according to claim 1 , wherein the power supply circuit stepwise drops the output voltage in accordance with a drop of the input voltage. 3. The electric device according to claim 1 , wherein the output voltage of the power supply circuit, which is output when the input voltage is equal to or higher than the predetermined first threshold value, is a required voltage which is necessary for the load to normally operate, and wherein the output voltage of the power supply circuit, which is output when the input voltage is lower than the predetermined first threshold value, is a voltage which is lower than the required voltage. 4. The electric device according to claim 1 , wherein, when the input voltage transits from a state of being lower than a predetermined second threshold value to a state of being equal to or higher than the predetermined second threshold value, the power supply circuit waits until the state in which the input voltage is equal to or higher than the second threshold value continues for a predetermined second time period and then increases the output voltage. 5. The electric device according to claim 4 , wherein the predetermined first time period is shorter than the predetermined second time period. 6. A method of controlling a power supply circuit, comprising: dropping an input voltage that is input from a secondary battery to an output voltage and outputting the output voltage to a load; dropping the output voltage when the input voltage drops below a predetermined first threshold value from the output voltage output when the input voltage is equal to or higher than the predetermined first threshold value; and when the input voltage transits from a state of being equal to or higher than the predetermined first threshold value to a state of being lower than the predetermined first threshold value, waiting until the state in which the input voltage is lower than the predetermined first threshold value continues for a predetermined first time period and then dropping the output voltage. 7. The method according to claim 6 , further comprising stepwise dropping the output voltage in accordance with a drop of the input voltage.
Assignees
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Classifications
Charging or discharging characterised by the power electronics converter · CPC title
- H02M3/02Primary
without intermediate conversion into AC · CPC title
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9431897B2 cover?
- Provided is an electric device, including: a secondary battery; and a power supply circuit for dropping an input voltage which is input from the secondary battery to an output voltage and outputting the output voltage to a load, in which the output voltage is stepwise dropped in accordance with the drop of the input voltage.
- Who is the assignee on this patent?
- Sony Computer Entertainment Inc, Sony Corp, Sony Interactive Entertainment Inc
- What technology area does this patent fall under?
- Primary CPC classification H02M3/02. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 30 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).