System for inspecting operation parameter of central/distributed electric vehicle battery set
A technology for battery packs and electric vehicles. It is applied in electric vehicles, measuring electricity, and electrical devices. It can solve the problems of long lead wires, increasing the difficulty and complexity of wiring, and damaging detection equipment, achieving high cost performance and enhancing flexibility. and expandability, the effect of increasing reliability
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[0086] Referring to Figure 1, the working voltage of electric vehicle motors is relatively high, generally around 300V. The voltage of power lead-acid batteries is mostly 6V and 12V, and the voltage of lithium-ion batteries and nickel-metal hydride batteries is smaller (4V, 1.2V). Therefore, the number of batteries in the battery pack is relatively large. For example, if a 12V lead-acid battery is used to provide a driving voltage of 288V, 24 batteries are required. If each battery is equipped with a detection module, in addition to increasing the cost, the reliability of the system will also decrease. In addition, if the number increases, the capacity of the CAN bus will not be enough. Currently, the number of nodes allowed by the CAN bus is 110. For this reason, we propose the detection idea of "local concentration" and "overall distribution", that is, all batteries are divided into several groups, each group uses a detection module for "centralized" detection, and the who...
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