Abstract: The disclosure relates to the field of electronic elements, and discloses an Insulated Gate Bipolar Transistor (IGBT) module assembly which comprises a cooling plate and an IGBT module fixedly connected to the cooling plate, wiring terminals are arranged at an end face of the IGBT module, which is away from the cooling plate, the IGBT module comprises a side face adjacent to the end face, and the side face and the cooling plate form a water guiding groove. In the disclosure, the side face and the cooling plate form the water guiding groove, and a great amount of condensed water collected on the cooling plate can be guided to flow out through the water guiding groove instead of flowing to the end face of the IGBT module, on which the wiring terminals are arranged.

Abstract: Disclosed are a method and device for processing a voltage drop, a grid interconnection method and device for processing an electrical apparatus, and a system. The method includes: acquiring a drop amplitude of a first voltage for each phase in a three-phase alternating current (S204); and under a condition in which the first voltage for any phase in the three-phase alternating current drops, performing reactive power compensation according to a drop amplitude of the first voltage for a phase in which the first voltage drops (S206). Therefore, the electrical apparatus has a low voltage ride-through function, thereby solving the technical problem of a large deviation of voltage drop amplitude determination arising from an asymmetrical drop of three phases.

Abstract: A method for controlling an air conditioner outdoor unit comprises: acquiring the working mode of the air conditioner outdoor unit; acquiring sensor parameters of the air conditioner outdoor unit according to the working mode, the sensor parameters including wind direction parameters read by a wind direction sensor (163) or temperature parameters read by a temperature sensor (161); determining control parameters for the air conditioner outdoor unit by the working mode and the sensor parameters corresponding to the working mode; driving the rotating speed of a fan (121) and the rotating angle of a wind direction adjusting device (125) by use of the control parameters. In addition, a control system for the air conditioner outdoor unit is also related to.

Abstract: Disclosed are a method and device for processing a voltage drop, a grid interconnection method and device for processing an electrical apparatus, and a system. The method includes: acquiring a drop amplitude of a voltage for each phase in a three-phase alternating current (S204); and under a condition in which a voltage for any phase in the three-phase alternating current drops, performing reactive power compensation according to a drop amplitude of a voltage for a phase in which the voltage drops (S206). Therefore, the electrical apparatus has a low voltage ride-through function, thereby solving the technical problem of a large deviation of voltage drop amplitude determination arising from an asymmetrical drop of three phases.

Abstract: The disclosure relates to the field of electronic elements, and discloses an Insulated Gate Bipolar Transistor (IGBT) module assembly which comprises a cooling plate and an IGBT module fixedly connected to the cooling plate, wiring terminals are arranged at an end face of the IGBT module, which is away from the cooling plate, the IGBT module comprises a side face adjacent to the end face, and the side face and the cooling plate form a water guiding groove. In the disclosure, the side face and the cooling plate form the water guiding groove, and a great amount of condensed water collected on the cooling plate can be guided to flow out through the water guiding groove instead of flowing to the end face of the IGBT module, on which the wiring terminals are arranged.

Abstract: A method for controlling a photovoltaic air conditioning system. The method comprises: detecting a grid frequency (101); when the detected grid frequency is not equal to a pre-set frequency, calculating and obtaining a control parameter according to the detected grid frequency (102); and controlling a photovoltaic air conditioning by means of the calculated and obtained control parameter (103). Also disclosed is a photovoltaic air conditioning control device.

Abstract: A lithium-ion battery cell and a lithium-ion battery including the lithium-ion battery cell are provided. The lithium-ion battery cell includes a positive plate, a membrane and a negative plate. Multiple positive lugs are arranged sequentially on the positive plate in a unfolded state, multiple negative lugs are arranged sequentially on the negative plate in a unfolded state. The positive plate and the negative plate are separated by the membrane and are wound to form the lithium-ion battery cell. The multiple positive lugs form a lug laminated structure or a lug staggered structure, and the multiple negative lugs form a lug laminated structure or a lug staggered structure.

Abstract: A method, an apparatus, and a system for detecting the working state of a photovoltaic panel, and a photovoltaic electrical system are provided. The photovoltaic panel is arranged in a photovoltaic electrical system including a photovoltaic device and a control device. The photovoltaic device includes the photovoltaic panel and a modulator. The control device includes a demodulator. The photovoltaic device is connected to the control device via a direct current bus. The method includes: detecting the operating state of the photovoltaic panel to obtain a state parameter; modulating, through the modulator, the state parameter to obtain a modulated signal, and loading the modulated signal to the direct current bus; transmitting the modulated signal to the demodulator through the direct current bus. The demodulator demodulates the modulated signal to obtain the state parameter.

Abstract: A method for controlling an air conditioner outdoor unit comprises: acquiring the working mode of the air conditioner outdoor unit; acquiring sensor parameters of the air conditioner outdoor unit according to the working mode, the sensor parameters including wind direction parameters read by a wind direction sensor (163) or temperature parameters read by a temperature sensor (161); determining control parameters for the air conditioner outdoor unit by the working mode and the sensor parameters corresponding to the working mode; driving the rotating speed of a fan (121) and the rotating angle of a wind direction adjusting device (125) by use of the control parameters. In addition, a control system for the air conditioner outdoor unit is also related to.