Optical storage converter, control method and device therefor, and computer readable storage medium

Patent metadata

Field	Value
Publication number	US-12328073-B2
Application number	US-202118014234-A
Country	US
Kind code	B2
Filing date	Jul 9, 2021
Priority date	Jul 15, 2020
Publication date	Jun 10, 2025
Grant date	Jun 10, 2025

Abstract

The present disclosure relates to an optical storage converter, a control method and device thereof, and a computer readable storage medium. The control method for the optical storage converter includes: obtaining a voltage measurement and a current measurement of a universal interface of optical storage converter in the case where an apparatus is accessed to the universal interface, to determine whether the apparatus accessed to the universal interface is a photovoltaic system or an energy storage system; and adjusting an internal circuit of the optical storage converter correspondingly in the case where the accessed apparatus is the photovoltaic system or the energy storage system.

First claim

What is claimed is:

1. A control method of an optical storage converter, comprising:
obtaining a voltage measurement and a current measurement of a universal interface of the optical storage converter in the case where an apparatus is accessed to the universal interface, to determine whether the apparatus accessed to the universal interface is a photovoltaic system or an energy storage system; and
adjusting an internal circuit of the optical storage converter correspondingly in the case where the accessed apparatus is the photovoltaic system or the energy storage system, wherein one universal interface corresponds to one DC to DC converter circuit, the DC to DC converter circuit comprises a first module and a second switch tube module connected in series, the first switch tube module comprises a first switch tube and a first freewheeling diode, the second switch tube module comprises a second switch tube and a second freewheeling diode, a first port of the first switch tube module is connected to a first port of a capacitor, a second port of the first switch tube module is connected to a first port of the second switch tube module, a second port of the second switch tube module is connected to a second port of the capacitor, the second port of the first switch tube module is connected to a first port of the universal interface through an inductor, and the second port of the second switch tube module is connected to a second port of the universal interface.

2. The control method of an optical storage converter according to claim 1 , wherein the adjusting an internal circuit of the optical storage converter correspondingly in the case where the accessed apparatus is the photovoltaic system or the energy storage system comprises:
adjusting a direct current (DC) to DC converter circuit inside the optical storage converter to operate as a boost circuit in the case where the accessed apparatus is the photovoltaic system; and
adjusting the DC to DC converter circuit inside the optical storage converter to operate as a buck-boost circuit in the case where the accessed apparatus is the energy storage system.

3. The control method of an optical storage-converter according to claim 2 , wherein the adjusting the DC to DC converter circuit inside the optical storage converter to operate as the buck-boost circuit in the case where the accessed apparatus is the energy storage system comprises:
adjusting the buck-boost circuit to be a buck operation mode in the case where the energy storage system works in a charge state; and
adjusting the buck-boost circuit to be a boost operation mode in the case where the energy storage system works in a discharge state.

4. The control method of an optical storage converter according to claim 1 , wherein the voltage measurement and the current measurement of the universal interface are a voltage measurement and a current measurement of a front end of a circuit breaker at the universal interface; and
the obtaining a voltage measurement and a current measurement of a universal interface of the optical storage converter, to determine whether the apparatus accessed to the universal interface is a photovoltaic system or an energy storage system, comprises:
determining whether there is a voltage in the universal interface; and
determining that the accessed apparatus is the energy storage system in the case where there is no voltage in the universal interface.

5. The control method of an optical storage converter according to claim 4 , wherein the obtaining a voltage measurement and a current measurement of a universal interface of the optical storage converter, to determine whether the apparatus accessed to the universal interface is a photovoltaic system or an energy storage system, further comprises:
adjusting the DC to DC converter circuit inside the optical storage converter to operate as a boost circuit in the case where there is a voltage in the universal interface;
adjusting a voltage input from the universal interface, and determining whether an output power of the DC-DC conversion circuit changes corresponding to the adjusted voltage;
determining that the accessed apparatus is the photovoltaic system in the case where the output power of the DC-DC conversion circuit changes corresponding to the adjusted voltage; and
determining that the accessed apparatus is the energy storage system in the case where the output power of the DC-DC conversion circuit does not changes corresponding to the adjusted voltage.

6. The control method of an optical storage converter according to claim 1 , wherein the adjusting an internal circuit of the optical storage converter correspondingly in the case where the accessed apparatus is the photovoltaic system or the energy storage system comprises:
controlling the first switch tube to turn off and controlling the second switch tube to turn on in the case where the accessed apparatus is the photovoltaic system;
controlling the first switch tube to turn off and control the second switch tube to turn on in the case where the accessed apparatus is the energy storage system which works in a discharge state; and
controlling the first switch tube to turn on, and controlling the second switch tube to turn off in the case where the accessed apparatus is the energy storage system which works in a charge state.

7. A non-transient computer-readable storage medium, wherein the non-transient computer-readable storage medium has computer instructions stored therein which, when executed by a processor, implement the control method of an optical storage converter according to claim 1 .

8. A non-transient computer-readable storage medium, wherein the non-transient computer-readable storage medium has computer instructions stored therein which, when executed by a processor, implement the control method of an optical storage converter according to claim 2 .

9. A control device of an optical storage converter, comprising:
an accessed apparatus determining module configured to obtain a voltage measurement and a current measurement of a universal interface of the optical storage converter in the case where an apparatus is accessed to the universal interface, to determine whether the apparatus accessed to the universal interface is a photovoltaic system or an energy storage system; and
a circuit adjusting module configured to adjust an internal circuit of the optical storage converter correspondingly in the case where the accessed apparatus is the photovoltaic system or the energy storage system, wherein one universal interface corresponds to one DC to DC converter circuit, the DC to DC converter circuit comprises a first switch tube module and a second switch tube module connected series, the switch tube module comprises a first switch tube and a first freewheeling diode, the second switch tube comprises a second switch tube and a second freewheeling diode, a first port of the first switch tube module is connected to a first port of a capacitor, a second port of the first switch tube module is connected to a first port of the second switch tube module, a second port of the second tube module is connected to a second port of the capacitor, the second port of the first switch tube module is connected to a first port of the universal interface through an inductor, and the second port of the second switch tube module is connected to a second port of the universal interface.

10. An optical storage converter, comprising:
a control device of the optical storage converter according to claim 9 ;
a universal interface; and
a voltage and current collection device, configured to collect a voltage measurement and a current measurement of the universal interface in the case where an appara

Assignees

• Gree Electric Appliances Inc Zhuhai

Inventors

• Jiang Yingyi
• Huang Meng
• Dang Peiyu
• Huang Songru

Classifications

• H02J2101/24

  Photovoltaics · CPC title

• H02J3/32

  using batteries or super capacitors with converting means · CPC title

• H02M1/0009

  Devices or circuits for detecting current in a converter · CPC title

• H02M7/5387

  in a bridge configuration · CPC title

• Y02E70/30

  Systems combining energy storage with energy generation of non-fossil origin · CPC title