2results about How to "Drawn precisely" patented technology

A distributed battery pack monitoring method, device, and storage medium include: a battery monitoring sensor group uploading multi-frequency internal resistance, voltage, and temperature data to a main control unit via a daisy-chain communication unit; the main control unit sending real-time battery parameters to an LCD display for direct display; the main control unit processing and plotting the multi-frequency internal resistance using intelligent algorithms to obtain the battery's internal resistance spectrum; the main control unit sending the internal resistance spectrum to a battery capacity assessment host or battery monitoring software platform to estimate capacity and provide real-time temperature feedback; a storage unit storing the monitoring data; and a switch output unit outputting fault status to peripheral devices. This invention comprehensively monitors the real-time operating status of the battery by collecting multiple key parameters. The daisy-chain communication structure enables efficient aggregation and uploading of multi-point data. The intelligent algorithm analyzes and processes the internal resistance data to accurately plot the battery's internal resistance spectrum.

This utility model discloses a drawing board for engineering cost estimation, relating to the technical field of engineering cost estimation tools. It includes a first drawing board body, a rotating shaft rotatably connected to one side of the first drawing board body, and a second drawing board body fixedly connected to the other side of the rotating shaft. Assembly blocks are symmetrically fixedly connected to one side of the first drawing board body, and fixing components are installed inside the assembly blocks. L-shaped plates are symmetrically slidably connected to one side of both the first and second drawing board bodies, and clamping components are installed on one side of the L-shaped plates. Merging components are installed on both sides of the first drawing board body. This utility model, using the above structure, folds the originally large board surface into a compact form, easily placing it under a desk, in a closet gap, or in a corner of a vehicle, greatly freeing up office and living space. Moreover, the folded drawing board significantly reduces the difficulty of carrying it; whether going out to survey sites or going to construction sites to coordinate drawings, it can be easily packed into a backpack or handbag, meeting the frequent movement needs of engineering cost estimators.