[특허]Hybrid inverter generator

Techtronic Outdoor Products Technology Limited

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Hybrid inverter generator

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02J-009/00 H02J-007/00 H02J-009/06 B60L-011/12 H02P-009/04
미국특허분류(USC)	307/046; 307/044; 307/045; 307/064; 307/065; 307/066
출원번호	US-0359736 (2012-01-27)
등록번호	US-8987938 (2015-03-24)
발명자 / 주소	Eschrich, Sven Hahn, Klaus
출원인 / 주소	Techtronic Outdoor Products Technology Limited
대리인 / 주소	Michael Best & Friedrich LLP
인용정보	피인용 횟수 : 1 인용 특허 : 10

초록
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A hybrid engine and battery generator and a method of operating the same. The generator is controlled to operate in at least three modes: a battery-only mode, a battery charging mode, and a boost mode. In the battery-only mode, the engine is off and an internal battery of the generator is used by an inverter to generate AC output. In the battery charging mode, the engine generates DC power, via an alternator and rectifier, which is used to charge the battery and to supply power to the inverter to generate AC output. In the boost mode, the battery and the engine generate DC power that is used by the inverter to generate an AC output with increased wattage, relative to the battery-only mode and battery charging mode. The generator automatically switches between the modes based on battery level and load demand.

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1. A hybrid inverter generator, the generator comprising: an engine including a rotatable shaft;an alternator including an AC alternator output, wherein the alternator is rotationally driven by the rotatable shaft to produce AC alternator power;a rectifier including a DC rectifier output and coupled to the AC alternator output, wherein the rectifier converts AC alternator power received from the AC alternator output to DC power and outputs the DC power along the DC rectifier output;an inverter including a DC inverter input coupled to the DC rectifier output, wherein the inverter inverts DC power received via the DC inverter input to AC power for supply to an AC load;electrical terminals configured to be coupled to a battery, wherein the electrical terminals are connected in parallel with the rectifier output and the DC inverter input;a controller operable to control the generator to operate in the following three modes: a battery-only mode, wherein the rectifier does not provide DC power along the DC rectifier output and the battery provides DC power to the DC inverter input,a battery charging mode, wherein the battery receives DC power from the DC rectifier output and the DC inverter input receives DC power from the DC rectifier output, anda boost mode, wherein the DC inverter input receives DC power from both the battery and the DC rectifier output;a housing that houses the engine, the alternator, the rectifier, the inverter, and the controller; andan AC outlet on the housing coupled to the inverter to receive the AC power and operable to receive a plug of the AC load. 2. The hybrid inverter generator of claim 1, wherein the battery is hard-wired to the DC rectifier output and the DC inverter input. 3. The hybrid inverter generator of claim 1, further comprising a battery receptacle for selectively receiving the battery. 4. The hybrid inverter generator of claim 3, wherein the battery is a power tool battery operable to provide power to a power tool when removed from the generator and electrically coupled to the power tool. 5. The hybrid inverter generator of claim 1, wherein the battery has an output level of between approximately 180 and 300 Volts DC. 6. The hybrid inverter generator of claim 1, further comprising a receiver that receives wireless control signals from a remote transceiver to control the generator. 7. The hybrid inverter generator of claim 1, wherein the controller is further operable to determine a load demand of the AC load;determine a battery level of the battery; andcontrol the generator to operate in one of the battery-only mode, the battery charging mode, and the boost mode based on the determined load demand and battery level. 8. The hybrid inverter generator of claim 1, wherein, in the battery charging mode and the boost mode, the controller is operable to control the engine speed based on the load demand. 9. The hybrid inverter generator of claim 1, wherein the battery is coupled to the DC inverter input via a path not having a DC/DC converter circuit for increasing a DC voltage level output by the battery. 10. A method of operating a hybrid engine battery generator, the method comprising: receiving, by an outlet on a housing of the generator, a plug of a load to couple the load to the generator;determining a load demand of the load coupled to the outlet;determining a battery level of a battery electrically coupled to the generator;selecting a mode of operation for the generator based on the battery level and the load demand, wherein selecting the mode of operation includes operating the generator in a battery-only mode, wherein an engine of the generator does not provide rotational output, andthe battery provides DC power to an inverter via a path not having a DC/DC converter circuit for increasing a DC voltage level output by the battery;operating the generator in a battery charging mode, wherein the engine provides rotational output to an alternator,the alternator provides AC output to a rectifier, andthe rectifier charges the battery and provides DC power to the inverter; andoperating the generator in a boost mode, wherein the engine provides rotational output to the alternator,the alternator provides AC output to the rectifier, andboth the rectifier and the battery provide DC power to the inverter. 11. The method of claim 10, wherein: the generator is operated in the battery-only mode if the load demand is below a low load threshold and the battery level is above a low battery threshold,the generator is operated in the battery charging mode if the load demand is between the low load threshold and a high load threshold or the battery level is below the low battery threshold, andthe generator is operated in the boost mode if the load demand is above the high load threshold. 12. The method of claim 10, wherein the battery charging mode comprises a battery charging, low load mode and a battery charging, medium load mode. 13. The method of claim 12, further comprising: operating the generator in the battery charging, low load mode with the engine operating at a first speed and a load demand being at a first load level;operating the generator in the battery charging, medium load mode with the engine operating at a second speed and the load demand being at a second load level, wherein the second speed is greater than the first speed to meet the second load demand, which is greater than the first load demand. 14. The method of claim 10, wherein, in the battery-only mode and the boost mode, the battery provides DC power to the inverter between approximately 180 and 300 Volts DC. 15. The method of claim 10, further comprising removing the battery from a battery receptacle of the generator and inserting a second battery into the battery receptacle. 16. The method of claim 10, further comprising receiving wireless control signals from a remote transceiver to control the generator. 17. A hybrid inverter generator, the generator comprising: an engine including a rotatable shaft;an alternator including an AC alternator output, wherein the alternator is rotationally driven by the rotatable shaft to produce AC alternator power;a rectifier including a DC rectifier output and coupled to the AC alternator output, wherein the rectifier converts AC alternator power received from the AC alternator output to DC power and outputs the DC power along the DC rectifier output;an inverter including a DC inverter input coupled to the DC rectifier output, wherein the inverter inverts DC power received via the DC inverter input to AC power for supply to an AC load;a battery bank coupled in parallel to the DC rectifier output and the DC inverter input, the battery bank including a hardwired battery and a selectively removable battery;a controller operable to control the generator to operate in the following three modes: a battery-only mode, wherein the rectifier does not provide DC power along the DC rectifier output and the hardwired battery and the selectively removable battery provide DC power to the DC inverter input,a battery charging mode, wherein the hardwired battery and the selectively removable battery receive DC power from the DC rectifier output and the DC inverter input receives DC power from the DC rectifier output, anda boost mode, wherein the DC inverter input receives DC power from the hardwired battery, the selectively removable battery, and the DC rectifier output. 18. The hybrid inverter generator of claim 17, wherein the selectively removable battery is a power tool battery operable to provide power to a power tool when removed from the generator and electrically coupled to the power tool. 19. The hybrid inverter generator of claim 17, wherein the hardwired battery provides between approximately 180 and 300 Volts DC. 20. The hybrid inverter generator of claim 17, wherein the controller is further operable to determine a load demand of the AC load;determine a first battery level for the hardwired battery level and a second battery level for the selectively removable battery; andcontrol the generator to operate in one of the battery-only mode, the battery charging mode, and the boost mode based on the first and second battery levels. 21. The hybrid inverter generator of claim 17, wherein the battery bank is coupled to the DC inverter input via a path not having a DC/DC converter circuit for increasing a DC voltage level output by the battery.

이 특허에 인용된 특허 (10)

이 특허를 인용한 특허 피인용횟수: 1

Fritz, Michael Bruce; Hahn, Ryan Thomas; Jaskowiak, Ryan Sylvester; Stair, Kenny; Willer, Mark David. Portable generator. USP201811D834517.

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Hybrid inverter generator

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Hybrid inverter generator

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