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Electric vacuum pump control system and method

An electric vacuum pump and control system technology, applied in the direction of brakes, brake transmissions, transportation and packaging, etc., can solve the problems of low reliability and poor energy saving of electric vacuum pumps, and achieve the prevention of vacuum pump failures, reduction of energy consumption, and reduction of use energy consumption effect

Active Publication Date: 2016-12-14
DONGFENG MOTOR CORP HUBEI
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Problems solved by technology

At present, new energy vehicles only control the relay to complete the opening and closing of the electric vacuum pump, but rarely consider the influence of factors such as voltage and current on the energy saving and reliability of the electric vacuum pump during the working process, resulting in low reliability and low energy saving of the electric vacuum pump. Difference

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  • Electric vacuum pump control system and method

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0032] Such as figure 1 As shown, an electric vacuum pump control system of the present invention includes a power supply system 1, a signal acquisition system 2 and a control system 3. The power supply system 1 is provided with a low-voltage power supply for supplying power to the signal acquisition system 2 and the control system 3. The signal acquisition system 2 is used to acquire the vacuum pump pressure signal 2-1 and the key ON switch signal 2-2. Control system 3 includes power supply regulator 3-1, signal conditioning system 3-2, multi-channel digital-analog concentrator 3-3, interface processing system 3-4, central processing system 3-5, power driver 3-6 and faults Processing system 3-7. Among them, the power supply voltage stabilizer 3-1 is used to filter the power supply voltage of the storage battery through hardware to achieve voltage...

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Abstract

The invention relates to the technical field of vacuum pump control, in particular to an electric vacuum pump control system and method. The control method comprises the steps that a key ON gear switching signal, a storage battery voltage signal and a vacuum pump pressure signal are acquired; and a vacuum pump is controlled to work in one of a fixed-frequency working mode, a voltage protection mode, a normal working mode and a current protection mode according to the key ON gear switching signal, the storage battery voltage signal and the vacuum pump pressure signal. The four working modes including the fixed-frequency working mode, the normal working mode, the current protection working mode and the voltage protection working mode are set, so that the working mode of the vacuum pump is selected according to the key ON gear switching signal, the storage battery voltage signal and the vacuum pump pressure signal. Basic brake boost pressure of the vacuum pump can be guaranteed and maintained, and meanwhile, the use energy consumption of the electric vacuum pump is reduced, and overvoltage protection is achieved.

Description

Technical field [0001] The invention relates to the technical field of vacuum pump control, in particular to an electric vacuum pump control system and method. Background technique [0002] In new energy electric vehicles, the electric vacuum pump extracts vacuum to maintain the working mode of the brake vacuum pressure. As one of the safety measures for the brake system of electric vehicles, the effectiveness of the control of the brake system is particularly important. At present, new energy vehicles only control the relay to complete the opening and closing of the electric vacuum pump, and rarely consider the influence of voltage and current on the energy saving and reliability of the electric vacuum pump working process, resulting in low reliability and low energy saving of the electric vacuum pump. difference. Summary of the invention [0003] In order to solve the above technical problems, the present invention provides an electric vacuum pump control system and method with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/72
CPCB60T13/72
Inventor 赵建华何春芳
Owner DONGFENG MOTOR CORP HUBEI
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