Gree Electric Appliances, Inc. of Zhuhai

Qingdao Goertek Technology Co., Ltd.

Shengyuan Science and Technology (shenzhen) Co., Ltd.

Meng Huang

Jing Wang

Xianqiao Yu

Songru Huang

Ningning Chen

Yingyi Jiang

Peiyu Dang

Shugong Nan

Wenqiang Tang

Meng Li

Shiyong Jiang

Xuefen Zhang

Peng Ren

Zunhui Xiao

Xia Liu

Xiaogao Liu

Shan Zhang

Shangxian Feng

Dongyuan Xu

Bo Yang

Mingzhu Dong

Zhigang Zhao

Xiang Zhang

Wu Wen

Weijin Li

Wenlai Zhang

Lingjun Wang

Xiao Luo

Wenhao Wu

Yu Cui

Hao Guo

Zhenwei Chen

Mingqiang Sheng

Yongjie Liu

Yuxin Sun

Fulong Che

Yongying Guo

Hongdi An

Mingzhao Fang

Bei Chen

Yunhong Zeng

Jianjun Huang

Rongxin Liang

Jianming Quan

Xiuhua Duan

Disclosed are a photovoltaic power supply system and a control method thereof, and an air conditioning unit. The system includes: a photovoltaic cell panel; a direct-current bus; a DC/DC converter, one end of which is connected to the photovoltaic cell panel, and the other end of which is connected to the direct-current bus; and a switch assembly arranged in parallel with the DC/DC converter, wherein one end of the switch assembly is connected to the photovoltaic cell panel, and the other end thereof is connected to the direct-current bus, and the switch assembly is used for controlling a grid connection mode of the photovoltaic cell panel. When the switch assembly is turned off, the photovoltaic cell panel is connected to the direct-current bus by means of the DC/DC converter; and when the switch assembly is turned on, the photovoltaic cell panel is directly connected to the direct-current bus.

Photovoltaic power supply system and control method thereof, and air conditioning unit

Disclosed in the present disclosure are an energy control system, method and device, and electronic equipment. The energy control system includes a controlled system, an energy control device and a weather server. The controlled system includes power generation equipment, energy storage equipment and air conditioning equipment. The power generation equipment, the energy storage equipment and the air conditioning equipment are connected in parallel by means of a direct-current bus. The air conditioning equipment is also connected to an alternating-current power grid; and the energy control device is in communication connection with the controlled system and the weather server respectively, and is used to acquire weather forecast information in a preset future time period from the weather server and send an optimal energy flow configuration in the preset future time period to the controlled system.

Energy control system, method and device, and electronic equipment

This disclosure relates to a photovoltaic energy storage and power system and a three-phase power control method, apparatus and device for load(s). The three-phase power control method for load(s) in a photovoltaic energy storage and power system includes obtaining a drawing or feeding power of a grid, an charging or discharging power of energy storage, and a photovoltaic generation power; determining a generation power of an electric power system based on the drawing or feeding power of the grid, the charging or discharging power of the energy storage, and the photovoltaic generation power; and distributing the generation power of the electric power system evenly to load(s) of each phase to achieve three-phase dynamic balancing.

Photovoltaic energy storage and power system, and three-phase power control method, apparatus and device for load

The present disclosure discloses a control method for an energy storage system and apparatus, an energy storage system, and an energy storage device. The control method includes obtaining an operation parameter of a power grid and an electric quantity state of an energy storage battery in an energy storage system; and controlling working states of the power grid, the energy storage battery, a first auxiliary power supply, and a second auxiliary power supply according to the operation parameter of the power grid and the electric quantity state of the energy storage battery.

Control method for energy storage system and apparatus, energy storage system, and energy storage device

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.

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

The present disclosure provides a parameter configuration device, including a first signal modulator, a second signal modulator and an operating member electrically connected with the first signal modulator or the second signal modulator. The first signal modulator and the second signal modulator have a connection state and a separated state. In the connection state, the first signal modulating element is electrically connected with the second signal modulating element, and the first signal modulating element and the second signal modulating element enclose a configuration space for a cable to pass through. In the separated state, the first signal modulator is separated from the second signal modulator. The embodiments of the present disclosure make it easier to perform the operation of parameter configuration with a low cost.

Parameter configuration device

The present disclosure relates to an air conditioner pipeline device and an air conditioner. The air conditioner pipeline device includes a gaseous refrigerant connecting pipe and a liquid refrigerant connecting pipe which are configured to be connected between an indoor unit and an outdoor unit of the air conditioner. At least one of the gaseous refrigerant connecting pipe and the liquid refrigerant connecting pipe adopts a multi-layer pipe. The multi-layer pipe includes at least two conductive pipes, sequentially and coaxially sleeved along a radial direction of the multi-layer pipe and configured to be connected to a power supply of the air conditioner to transmit power to the air conditioner, where an internal area of the innermost layer of conductive pipe is used for a refrigerant to flow; and first insulating layers, configured to achieve insulation of at least two conductive pipes.

Air conditioner pipeline device and air conditioner

Disclosed in the present disclosure are an insulation resistance detection circuit, a resistance detection method, a converter and a photovoltaic centrifuge. The insulation resistance detection circuit includes a resistance detection module connected between a positive electrode and a negative electrode of a direct-current bus to be detected. The resistance detection module includes a first resistance bridge and a second resistance bridge arranged in parallel. The first resistance bridge is connected to the positive electrode of the direct-current bus by means of a first sampling resistor R. The second resistance bridge is connected to the negative electrode of the direct-current bus by means of a second sampling resistor R, and both the first sampling resistor Rand the second sampling resistor Rare equipped with voltage sampling chips. The resistance detection module is configured to calculate an insulation resistance value of the direct-current bus according to voltage values of the two sampling resistors before and after a first switch S is switched.

Insulation impedance detection circuit, impedance detection method, converter and photovoltaic centrifuge

The present disclosure provides a method and device for detecting insulation impedance of a photovoltaic inverter. The method includes: detecting, after a first path of photovoltaic input is electrically connected to the photovoltaic inverter, whether a second path of photovoltaic input needs to be electrically connected to the photovoltaic inverter; if the second path of photovoltaic input needs to be electrically connected to the photovoltaic inverter, causing the first path of photovoltaic input to stop operating, and then detecting insulation impedance of the second path of photovoltaic input; judging whether the insulation impedance of the second path of photovoltaic input satisfies a preset impedance condition; and if the insulation impedance of the second path of photovoltaic input satisfies the preset impedance condition, causing the second path of photovoltaic input to be electrically connected to the photovoltaic inverter, and causing the first path of photovoltaic input and the second path of photovoltaic input to perform grid-connected operation. The present disclosure resolves the problem in the prior art that insulation detection is inaccurate when two paths of photovoltaic input are grid-connected, such that insulation impedance detection results are more accurate, thereby increasing the safety of the inverter.

Method and device for detecting insulation impedance of photovoltaic inverter

The present disclosure relates to an IGBT driving circuit and a power conversion device. The IGBT driving circuit includes a driving chip with a first driving signal port (Vo); a driving resistor adjustment circuit connected between the first driving signal port (Vo) and a gate (G) of an IGBT, a driving resistor formed by the driving resistor adjustment circuit being adjustable in size; a peak voltage detection circuit connected to the gate (G) of the IGBT which is conductive to the first driving signal port (Vo), the peak voltage detection circuit being configured to monitor whether a peak voltage occurs when the IGBT is turned off; and a resistor adjustment control circuit connected between the peak voltage detection circuit and the driving resistor adjustment circuit and configured to reduce a resistor formed by the driving resistor adjustment circuit when the peak voltage is monitored when the IGBT is turned off.

IGBT driving circuit and power conversion device

An energy Internet system, an energy routing conversion device, and an energy control method, relating to a field of energy information. An alternating-current (AC) side energy routing conversion device of the energy Internet system includes a plurality of first route ports, and a direct-current (DC) side energy routing conversion device includes a plurality of second route ports, where each second route port is connected to a corresponding first route port by means of a corresponding DC busbar. A plurality of energy devices are connected to a DC busbar by means of corresponding first AC/DC converters or first DC converters. The AC side energy routing conversion device and the DC side energy routing conversion device collect energy information of the energy devices and adjust energy of the energy devices on a basis of energy balance constraint conditions.

Energy-internet system, energy routing conversion device, and energy control method

Disclosed are a power optimization method and an apparatus therefor, and a photovoltaic device and a photovoltaic system. The power optimization of a photovoltaic assembly can be realized when a series connection architecture or a parallel connection architecture is used for the photovoltaic assembly. The method includes: power optimization apparatuses carrying out MPPT processing on photovoltaic assemblies according to operating parameters of the photovoltaic assemblies corresponding to the power optimization apparatuses on a one-to-one basis (); and controlling the photovoltaic assemblies according to MPPT processing results so that power states of the photovoltaic assemblies are optimized (). By means of providing a power optimization apparatus for each photovoltaic assembly, the power optimization apparatus carries out MPPT processing on the corresponding photovoltaic assembly, thereby preventing the occurrence of power mismatch.

Power optimization method and apparatus therefor, and photovoltaic device and photovoltaic system

A photovoltaic support includes a first vertical upright column () and a second vertical upright column () on a foundation, and a beam () respectively hinged with a first end of the first vertical upright column () and a first end of the second vertical upright column (). The photovoltaic support further includes a first movable connecting piece () provided on the foundation and connected with a second end of the first vertical upright column (). The first movable connecting piece () is automatically adjusted according to the wind intensity, such that the first vertical upright column () moves in a vertical direction to adjust an inclination angle of the beam (). The photovoltaic support can adjust the angle adaptively in the case of a strong wind, and restore automatically after the strong wind has passed.

Photovoltaic support

The present disclosure relates to a photovoltaic energy storage air conditioner and a control method thereof. The air conditioner may include a photovoltaic power generation device, an energy storage device, an air conditioning unit and an energy scheduling and management device. The energy scheduling and management device may include: a detection module, configured to detect an operation state of the air conditioner, a power supply quantity and a working state of the photovoltaic power generation device and a power supply quantity and a working state of the energy storage device; and a scheduling module, configured to control power supply and/or charging according to the operation state of the air conditioner, the power supply quantity and the working state of the photovoltaic power generation device, the power supply quantity and the working state of the energy storage device, preset power supply priorities and power usage priorities.

Photovoltaic energy storage air conditioner and control method thereof

An earcushion with acoustic tube, comprising an earcushion body; the earcushion body is provided with a front acoustic cavity of speaker, the front acoustic cavity of speaker is provided with an acoustic tube, one end of the acoustic tube is arranged in the front acoustic cavity of speaker; the other end is connected with a resonant cavity, the volume of the resonant cavity is much greater than that of the acoustic tube, the resonant cavity is communicated with the outside atmosphere, the linear amplitude of the speaker vibration system may be increased and the system power may be improved, it can also improve the loop feedback environment.

Earcushion with acoustic tube

Growing community of inventors

Guangdong, China

Meng Huang