# US 2021/0242829 A1 · Solar power generation system

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- Number: US 2021/0242829 A1
- Document ID: US20210242829A1
- Status: Published application
- Kind: A1
- Application number: 16/972,253
- Filed: 2018-06-07
- Published: 2021-08-05
- Earliest claimed: 2018-06-07
- Assignees: Toshiba Mitsubishi-Electric Industrial Systems Corporation
- Applicants: Toshiba Mitsubishi-Electric Industrial Systems Corporation
- Inventors: Nobuhiro TAKAHASHI
- Web page: https://patentgrep.com/patent/US20210242829A1

## CPC

- F24F 5/0046: {using natural energy, e.g. solar energy, energy from the ground}
- H02S 40/425: {using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation}
- F24F 5/005: {using energy from the ground by air circulation, e.g. "Canadian well"}
- F24F 7/06: with forced air circulation, e.g. by fan {positioning of a ventilator in or against a conduit}
- H02S 20/10: Supporting structures directly fixed to the ground (H02S20/30 takes precedence)
- H02S 40/30: Electrical components
- H02S 40/345: {with cooling means associated with the electrical connection means, e.g. cooling means associated with or applied to the junction box (cooling means for PV cells H10F77/63, for PV modules H02S40/42)}
- H02S 40/44: Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time (directly associated with the PV cell or integrated with the PV cell H10F77/67)
- F24F 2005/0067: {with photovoltaic panels}
- H02J 3/381: {Dispersed generators}
- H02J 2101/24: Photovoltaics
- H02J 2105/12: supplying households or buildings
- H05K 7/20909: {Forced ventilation, e.g. on heat dissipaters coupled to components}
- Y02A 30/272: Solar heating or cooling
- Y02B 10/10: Photovoltaic [PV]
- Y02B 10/20: Solar thermal
- Y02B 10/40: Geothermal heat-pumps
- Y02B 30/54: Free-cooling systems
- Y02E 10/50: Photovoltaic [PV] energy
- Y02E 10/56: Power conversion systems, e.g. maximum power point trackers
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)
- H02S: GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES (obtaining electrical energy from radioactive sources G21H1/12; light sensitive inorganic semiconductor devices H10F; light sensitive organic semiconductor devices H10K30/00; thermoelectric devices H10N10/00; pyroelectric devices H10N15/00)
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

Through a power cable from a power collection box, a power conversion device receives DC power. The power conversion device converts the received DC power into AC power and transmits it to a power system. A plurality of air lead-in tubes are laid in parallel. Each of the air lead-in tubes includes a heat exchange part, an opening part, and a lead-in part. The heat exchange part is buried in a ground at a ground surface on a back surface of a solar cell panel. The opening part is exposed to the ground surface. The lead-in part is an opening that communicates with an interior of a building in which the power conversion device is installed. The air lead-in tubes are constructed to draw air in the heat exchange part from the lead-in part by using a sucking mechanism.

## Claims

### Claim at position 1

1-5. (canceled)

### Claim 6

A solar power generation system, comprising:
a solar cell panel installed in a ground surface;
a power conversion device configured to convert direct current power received from the solar cell panel via a power cable into alternate current power; and
an air lead-in tube including: a heat exchange part laid on the ground surface in a shade on a back side of the solar cell panel or buried in a ground on the back side; an opening part which communicates with the heat exchange part and is configured to introduce air on the ground to the heat exchange part; and a lead-in part which communicates with the heat exchange part and opens inside the power conversion device or inside a building in which the power conversion device is installed, and is constructed to draw air in the heat exchange part from the lead-in part by a sucking,
wherein the power cable is accommodated in the air lead-in tube.

### Claim 7 (depends on 6)

The solar power generation system according to claim 6, wherein the heat exchange part is buried in the ground at a depth equal to or greater than 1 meter.

### Claim 8 (depends on 6)

The solar power generation system according to claim 6, wherein the sucking includes using a lead-in fan which is configured to draw air to the lead-in part through the heat exchange part.