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A vehicle auxiliary power supply circuit and system

An auxiliary power supply and circuit technology, applied in the direction of circuit devices, general control systems, control/regulation systems, etc., can solve problems such as reduced service life, car failure to start, data loss, etc., to improve service life, reduce quiescent current, reduce The effect of small static losses

Active Publication Date: 2022-07-12
武汉葆源新能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the power-off of the controller of most electric vehicles is directly controlled by the ignition key. If the controller is powered off immediately, the high-voltage relays will also be powered off immediately, which will reduce their service life and risk data loss.
[0004] In addition, during the use of the on-board electronic controller, the quiescent current after power failure is also an important indicator. If the controller is not completely powered off and enters the dormant state, the controller will continue to consume low-voltage battery power when the vehicle is parked for a long time , leading to low-voltage battery feed, which causes the car to fail to start

Method used

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  • A vehicle auxiliary power supply circuit and system
  • A vehicle auxiliary power supply circuit and system
  • A vehicle auxiliary power supply circuit and system

Examples

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Effect test

Embodiment 1

[0041] refer to figure 1 , an on-board auxiliary power circuit, comprising a constant power input module, a wake-up signal input module, a power management module, a control module, a wake-up signal detection module and a power delay power-off module;

[0042] The output end of the constant power input module and the output end of the wake-up signal input module are both electrically connected to the input end of the power management module; the output end of the power management module is electrically connected to the input end of the control module the output terminal of the wake-up signal detection module is electrically connected to the input terminal of the control module; the output terminal of the control module is electrically connected to the input terminal of the power supply delay power-off module; the power supply delay power-off module is electrically connected The output end of the module is electrically connected with the input end of the power management module...

Embodiment 2

[0067] On the basis of Embodiment 1, an in-vehicle auxiliary power supply circuit system includes any one of the above-mentioned in-vehicle auxiliary power supply circuits.

[0068] In this embodiment, the normal power input module is used to input the normal power to the power management module to supply power to each module; the wake-up signal input module is used to input the wake-up signal, and the wake-up signal is converted and input to the power management module. The management module wakes up the switching power supply system by detecting the output signal of the wake-up signal input module, and the further control module is powered on to start and monitor the output signal of the wake-up signal detection module, so as to judge whether the wake-up signal is valid. When the wake-up signal is valid, the power supply delays The power-off module controls the power management module to work normally. When the wake-up signal is invalid, the power delay power-off module contr...

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Abstract

The invention provides a vehicle auxiliary power supply circuit and system, comprising a constant power input module, a wake-up signal input module, a power management module, a control module, a wake-up signal detection module and a power delay power-off module; an output end of the constant power input module, The output terminals of the wake-up signal input module are respectively electrically connected with the input terminals of the power management module, the output terminals of the power management module are electrically connected with the input terminals of the control module; the output terminals of the wake-up signal detection module are electrically connected with the input terminals of the control module, and control the The output end of the module is electrically connected with the input end of the power supply delay power-off module, and the output end of the power supply delay power-off module is electrically connected with the input end of the power supply management module. After the electric vehicle key is turned off, it can ensure the time-sharing of each high-voltage relay and save the corresponding information when the whole vehicle is powered off. At the same time, it enters the sleep state after a period of time, reduces its static current and reduces the static loss of the low-voltage battery. The advantage of increasing the service life of the battery.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted power supplies, in particular to a vehicle-mounted auxiliary power supply circuit and system. Background technique [0002] The advantages of low pollution and high performance of electric vehicles make it the main direction of the development of contemporary automobiles. Therefore, it is of great significance to develop and research the key technologies of electric vehicles. As one of the core components of the electric vehicle electronic system, the on-board integrated high-voltage controller has become an important research content of the electric vehicle technology. The integrated high-voltage controller of the electric vehicle undertakes the comprehensive control of the entire electric vehicle, and its reliability directly affects the reliability of the electric vehicle and is related to the safety of the electric vehicle. Among them, the power supply of the integrated high-voltage c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/36H02H3/027H02M1/08G05B19/042
CPCH02M1/36H02H3/027H02M1/08G05B19/0423G05B2219/25236Y02T10/70
Inventor 范龙艳
Owner 武汉葆源新能科技有限公司
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