Cell parameter transmission device for pure electric bus

Abstract

The invention relates to a cell parameter transmission device for a pure electric bus, comprising a control mainboard and an expansion board. The control mainboard is provided with a CPU of ARM920T based on an ARM core and internally integrated with a CAN bus interface so that the device has simple assembly structure, high-speed start and lower cost. For improving the communication reliability and the systematic reliability of the device, a watchdog circuit is designed on the expansion board to automatically detect a communication link state and a halted state of the device and recover from the halted state. The device is used for acquiring a great amount of cell parameter data by the CAN bus on a vehicle and transmitting a great amount of cell parameter data with a monitoring center in a GPRS wireless communication mode, wherein the cell parameter data comprise a voltage value of each single cell, a temperature value of each node of a cell box, and the like. The invention takes important effect on monitoring the cell parameters of a vehicle in the monitoring center.

Description

technical field [0001] The invention relates to the field of remote monitoring, in particular to a battery parameter transmission device for pure electric buses running. Background technique [0002] A pure electric bus is a bus whose power system is driven entirely by the electric energy of the battery. It is a new energy vehicle. Different from ordinary fuel buses, pure electric buses have the characteristics of zero exhaust emissions, which can improve the quality of the urban air environment and adjust the energy consumption structure. Therefore, the Chinese government currently encourages the production and use of pure electric buses. [0003] Since the pure electric bus is a product that combines multiple high-tech products, its power characteristics, driving performance and vehicle safety characteristics are closely related to the performance of the battery. For example, when the temperature of the battery is too high, it is easy to cause a battery explosion accident...

AI Technical Summary

Problems solved by technology

This makes it impossible for EVT to self-test whether the wireless communication link with the monitoring center is normal. When the communication link is disconnected, EVT will not detect it, so certain measures cannot be taken to ensure normal communication.

In addition, the system reliability of EVT is relatively low, and there is no system fault self-detection and self-recovery function. For example, when the system suddenly crashes or other system faults, EVT cannot self-detect the fault and eliminate the fault.

[0008] The hardware structure of EVT is complex, so the hardware cost is high

Images