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Vehicle mounted battery monitor system

A monitoring system and vehicle battery technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of waste of resources, unfavorable installation, and inability to combine display functions, and achieve the effect of convenient fault detection.

Active Publication Date: 2007-11-28
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Abstract
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AI Technical Summary

Problems solved by technology

There will be two disadvantages if there is no reserved interface. One is that the display function cannot be combined with the instrument cluster on the car itself, but only a liquid crystal display part can be designed by itself, which wastes resources and is not conducive to installation; The car is connected by the CAN network. The nodes in the network store a lot of control strategies when the car is running. It implements these control strategies according to the information provided by other nodes, and the battery is also a part of the car. A very important part, the battery management device has reserved a CAN interface, so that the battery information can also be sent to the vehicle controller, so that the vehicle controller can grasp more comprehensive information and control the vehicle more reasonably

Method used

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Embodiment Construction

[0026] Figure 1 shows a block diagram of the overall structure of the system of the present invention. The invention is composed of a central processing module, a voltage detection module, a temperature detection module, a current detection module, a real-time time module and a CAN communication module. As shown in Figure 1, the generator and battery are connected in parallel on the vehicle to supply power to the vehicle's electrical equipment. The central processing module is a single-chip microcomputer PIC18F258; the voltage acquisition module and temperature acquisition module are directly connected to the AD inlet of the single-chip microcomputer; the digital signal output by the temperature acquisition module is directly connected to the IO port of the single-chip microcomputer for communication, and the communication protocol is a single bus protocol customized by DALLAS company ;The output of the real-time module uses I 2 The C bus communicates with other devices, the ...

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Abstract

The invention relates to a vehicle battery monitoring system, comprising central processing module, current detecting module, temperature detecting module, voltage detecting module and real-time time module. The voltage collecting module and the temperature collecting module are connected to the AD inputting port of central processing module SCM directly. Digital signals outputted by the temperature collecting module are connected and communicated with I0 ports of central processing module SCM. The outputting end of real-time time module is communicated with other components by I2C bus and it is connected with the I2C bus interface of SCM. The CAN communication module is connected with the CAN interface of SCM directly. The central processing module measures battery temperature, battery voltage and battery current. It integrates charging and discharging electric quantity and estimates residual capability of battery. When the residual capability of battery is lower than the threshold value, the central processing module emits alarm information and hints that auto owner closes air conditioner, DVD, and vehicle refrigerator so on so that the capability of battery maintains certain amount.

Description

technical field [0001] The invention relates to a battery monitoring system of a traditional fuel vehicle. Background technique [0002] With the improvement of people's living standards and the development of automobile technology, the requirements for the comfort of automobiles are getting higher and higher, accompanied by the increase of automobile electrical equipment, such as air-conditioning equipment, car computers, in-car entertainment equipment and A large number of other automotive electronic products have put forward higher requirements for automotive power supply equipment. The on-board power supply is mainly a generator and a battery. When the car is moving, the generator works to supply power to the electrical equipment on the car and to charge the battery. When the power generated by the generator is not enough to meet the power consumption of the on-board equipment, or the car engine stops Rotate, when the generator stops generating power, the battery will d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 王丽芳胡运飞廖承林王欢徐冬平
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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