Power supply system for vehicle constant power module and control method

Abstract

The invention provides a power supply system for a vehicle constant power module, comprising a vehicle-mounted storage battery, and a power module, a control module, a signal acquisition module, a controller area network (CAN) module and a driving module which are connected with the vehicle-mounted storage battery; the power module is respectively connected with the control module, the signal acquisition module, the CAN module and the driving module; the power module supplies power voltage to the signal acquisition module and the driving module; the control module is respectively connected with the driving module, the signal acquisition module and the CAN module; and an electronically erasable programmable read-only memory (EEPROM) for storing data before power-off is arranged inside or outside the control module. The invention solves the technical problem that when an existing vehicle constant power module is in a low power consumption state, the power module of a power supply system keeps supplying power voltage to the control module to cause higher power consumption. According to the invention, because the power voltage which is supplied to the control module is closed when the power consumption is low, the power consumption of the system is greatly reduced.

Description

technical field [0001] The invention relates to the field of automobile power supply, in particular to an automobile constant power module power supply system and a control method. Background technique [0002] With the development of automotive electronics, the number of electronic units on the car is gradually increasing. From the perspective of power supply, it can be divided into two types: non-electric module and normal power module. The non-electric module refers to the electronic unit that is not directly powered by the vehicle battery. ; The constant power module refers to the electronic unit that is directly powered by the vehicle battery. [0003] When the vehicle is out of use (for example, it is set to anti-theft state), the abnormal power module on the vehicle is not powered at this time, while the normal power modules such as the body control module (abbreviated as BCM), combination switch, etc. are still powered by the vehicle battery, and It will enter the l...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem that the power supply module of the power supply system still provides the power supply voltage to the control module when the existing automobile constant power module is in the low power consumption state, resulting in relatively large power consumption, the present invention provides a low power consumption Automobile constant power module power supply system and control method

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