3results about How to "Zero loss" patented technology

The invention discloses a small-size high-efficiency large-current lithium battery active equalization circuit and a control method thereof, the small-size high-efficiency large-current lithium battery active equalization circuit comprises active equalization modules which are connected in parallel between two connected battery cells, and each active equalization module is composed of four switching tubes and a group of resonance branch circuit which is formed by connecting an inductor and a capacitor in series; n-1 active equalization modules are needed for a battery pack composed of N battery cells. The LC series branch serves as an energy temporary storage unit to replace a traditional inductance type single inductor or capacitance type multiple capacitors, the number of elements is reduced, meanwhile, low-loss energy transfer is achieved through resonance characteristics, and the equalization scheme has the advantages of being small in size, large in equalization current, small in equalization energy loss between battery cells, high in efficiency and the like.

The application discloses a kind of water meter multi-network adaptive switching method, system, terminal and storage medium.The method is applied to the intelligent water meter integrated at least two networks;Method includes: periodically detecting the performance data of each network of intelligent water meter;Performance data includes: one or more data in signal strength, packet loss rate and communication delay;According to the performance data of each network, it is judged whether to switch the original network, and after confirming the switching of the original network, each standby network is switched priority ordering;Before switching the original network, the data that is not transmitted successfully is cached to local, and breakpoint information is recorded;Based on the switching priority ordering result, attempt to connect standby network, and based on breakpoint information, carry out breakpoint resume through the standby network connected successfully.The application realizes the self-adaptation, zero loss, low-power consumption communication of water meter in weak signal environment.It is especially suitable for water meter data acquisition in complex environment such as remote mountainous area, signal blind area.

The utility model discloses a durable highly-integrated photovoltaic container inverter room, which comprises a photovoltaic inverter room, an inverter cabinet and a direct current cabinet, a top plate is arranged at the top of an upper room body of the photovoltaic inverter room, a box bottom is arranged at the bottom of the room body, side doors are arranged at two ends of the room body, inverter room doors are arranged at the centers of the front surface and the back surface of the room body, and the inverter room doors are connected with the inverter cabinet. The photovoltaic inverter room is internally provided with an inverter cabinet and a direct current cabinet, the inverter cabinet is communicated with the direct current cabinet, a monitoring unit is arranged between the inverter cabinet and the direct current cabinet in a matched mode, the top of the security monitor, the top of the inverter cabinet and the top of the direct current cabinet are each provided with an air channel, and the air channels are arranged in the top of the inner side of the photovoltaic inverter room. According to the utility model, the inverter and the direct current cabinet are integrated, the indirect sectional type direct exhaust air duct is adopted, so that the whole equipment can run reliably for a long time, the S-shaped blind window and the dustproof cotton plate can further play a dustproof role, and the middle line symmetric design facilitates the later maintenance of the equipment.