CN203078446U

CN203078446U - Control circuit of low quiescent currents of motor control system for vehicle

Info

Publication number: CN203078446U
Application number: CN 201220713690
Authority: CN
Inventors: 马驰; 苟文辉; 徐性怡
Original assignee: Shanghai Dajun Technologies Inc
Current assignee: Shanghai Dajun Technologies Inc
Priority date: 2012-12-21
Filing date: 2012-12-21
Publication date: 2013-07-24
Anticipated expiration: 2022-12-21

Abstract

The utility model discloses a control circuit of low quiescent currents of a motor control system for a vehicle. A main switch module of the control circuit is respectively connected with a normalizing module, an auxiliary switch module and a load module, the auxiliary switch module is respectively connected with an igniting module and the load module, and the load module is connected with the igniting module. The main switch module controls the normalizing module to supply electricity to the load module, the auxiliary switch module controls turning-on and turning-off of the main switch module according to the state of the igniting module, and the load module monitors the state of the igniting module and controls the auxiliary switch module. The control circuit supplies a load power supply according to igniting signals of the vehicle, the quiescent currents of the motor control system are effectively lowered, so that the energy consumption of a battery is lowered, and the control speed of the quiescent currents is accelerated.

Description

The control circuit of automobile-used electric machine control system low quiescent current

Technical field

The utility model relates to a kind of control circuit of automobile-used electric machine control system low quiescent current.

Background technology

During electronlmobil is used, the energy of vehicle is supplied with and is provided by battery, in order to reduce the expenditure of energy of battery, improve the battery degree of utilization, quiescent current to each control system of vehicle all has certain requirement for restriction, especially the electric machine control system of powered vehicle, it requires higher to quiescent current, and the low quiescent current of therefore controlling electric machine control system is most important.The mode of general low quiescent current is to realize by the control to relay, and its speed is slow, volume is big, cost is high.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of control circuit of automobile-used electric machine control system low quiescent current, this control circuit provides load power source according to the ignition signal of vehicle, effectively reduce the quiescent current of electric machine control system, thereby reduce the expenditure of energy of battery, and improved the control rate of low quiescent current.

For solving the problems of the technologies described above; the control circuit of the automobile-used electric machine control system low quiescent current of the utility model comprises load blocks; the normalizing module; ignition module; main switch module and pilot switch module; described main switch module connects described normalizing module respectively; pilot switch module and load blocks; described pilot switch module connects described ignition module and load blocks respectively; described load blocks connects described ignition module; the described normalizing module of wherein said main switch module controls is powered to described load blocks; described pilot switch module turns on and off according to the described main switch module of described ignition module mode control, and described load blocks is controlled to described ignition module condition monitoring and to described pilot switch module.

Further; above-mentioned main switch module comprises the PMOS pipe; first resistance and first electric capacity; above-mentioned ignition module comprises and door; above-mentioned pilot switch module comprises the NMOS pipe and second resistance; above-mentioned load blocks comprises the load unit and second electric capacity; described first resistance connects the S utmost point and the G utmost point of described PMOS pipe; described first electric capacity connects the D utmost point and the G utmost point of described PMOS pipe; described normalizing module mouth connects the S utmost point of described PMOS pipe; described first input end with door is connected described ignition module mouth and load unit respectively; described second input end with door is connected described load unit; described mouth with door is connected the G utmost point of described NMOS pipe by described second resistance; the D utmost point of described NMOS pipe connects the G utmost point of described PMOS pipe, the S utmost point ground connection of described NMOS pipe, and described second electric capacity connects the D utmost point and the ground terminal of described PMOS pipe.

Because the control circuit of the automobile-used electric machine control system low quiescent current of the utility model has adopted technique scheme; the main switch module that is this circuit connects normalizing module, pilot switch module and load blocks respectively; the pilot switch module connects ignition module and load blocks respectively; load blocks connects ignition module; wherein main switch module controls normalizing module is powered to load blocks; the pilot switch module turns on and off according to ignition module mode control main switch module, and load blocks is controlled to the ignition module condition monitoring and to the pilot switch module.This control circuit provides load power source according to the ignition signal of vehicle, effectively reduces the quiescent current of electric machine control system, thereby reduces the expenditure of energy of battery, and has improved the control rate of low quiescent current.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and embodiments:

Fig. 1 is the block diagram of the control circuit of the automobile-used electric machine control system low quiescent current of the utility model;

Fig. 2 is this control circuit scheme drawing.

The specific embodiment

As shown in Figure 1; the control circuit of the automobile-used electric machine control system low quiescent current of the utility model comprises load blocks 5; normalizing module 1; ignition module 2; main switch module 3 and pilot switch module 4; described main switch module 3 connects described normalizing module 1 respectively; pilot switch module 4 and load blocks 5; described pilot switch module 4 connects described ignition module 2 and load blocks 5 respectively; described load blocks 5 connects described ignition module 1; 1 pair of described load blocks 5 power supply of the described normalizing module of wherein said main switch module 3 controls; described pilot switch module 4 turns on and off according to the described main switch module 3 of described ignition module 2 mode control, and 5 pairs of described ignition module 2 condition monitorings of described load blocks are also controlled described pilot switch module 4.

In this control circuit; receive the signal of ignition module when the pilot switch module after; control main switch module is open-minded; the signal of normalizing module is transferred to load blocks through the main switch module; load blocks is started working and is begun to detect the status signal of ignition module; in case the signal at stop of ignition module; load blocks is sent cut-off signals to the pilot switch module; pilot switch module controls main switch module shuts down; thereby cut off of the power supply of normalizing module, reduced the quiescent current of load blocks load blocks.

Further; as shown in Figure 2; above-mentioned main switch module comprises PMOS pipe Q1; first resistance R 1 and first capacitor C 1; above-mentioned ignition module comprises and door U; above-mentioned pilot switch module comprises the NMOS pipe Q2 and second resistance R 2; above-mentioned load blocks comprises the load unit 51 and second capacitor C 2; described first resistance R 1 connects the S utmost point and the G utmost point of described PMOS pipe Q1; described first capacitor C 1 connects the D utmost point and the G utmost point of described PMOS pipe Q1; described normalizing module mouth connects the S utmost point of described PMOS pipe Q1; described first input end with door U is connected described ignition module mouth and load unit 51 respectively; described second input end with door U is connected described load unit 51; described mouth with door U is connected the G utmost point that described NMOS manages Q2 by described second resistance R 2; the D utmost point of described NMOS pipe Q2 connects the G utmost point of described PMOS pipe Q1; the S utmost point ground connection of described NMOS pipe Q2, described second capacitor C 2 connects the D utmost point and the ground terminal of described PMOS pipe Q1.

After the normalizing modular power source powers on, the PMOS pipe S utmost point rises to the power line voltage of normalizing module, because the ignition module output signal does not reach the first input end with door, the NMOS pipe is in off state, the D of NMOS pipe is high level very, this moment, the PMOS pipe also was in off state, and load unit is not worked, and realizes the requirement for restriction of quiescent current; When ignition module mouth igniting signal voltage rises to a threshold value, rise with gate output terminal voltage, NMOS manages conducting, the D of NMOS pipe is low level very, PMOS manages conducting, and load unit is started working, and load unit is to the ignition signal voltage monitoring of ignition module simultaneously, when being lower than a threshold value, load unit output low level signal to the family status two input ends, become low level with gate output terminal, NMOS manages shutoff, and the PMOS pipe is turn-offed, thereby reduced the quiescent current of load unit.

This control circuit can make the quiescent current of electric machine control system less than 1mA, satisfies the requirement at the motor control unit quiescent current fully, effectively reduces battery power consumption, has improved the control rate of low quiescent current.

Claims

1. the control circuit of an automobile-used electric machine control system low quiescent current; comprise load blocks; it is characterized in that: also comprise the normalizing module; ignition module; main switch module and pilot switch module; described main switch module connects described normalizing module respectively; pilot switch module and load blocks; described pilot switch module connects described ignition module and load blocks respectively; described load blocks connects described ignition module; the described normalizing module of wherein said main switch module controls is powered to described load blocks; described pilot switch module turns on and off according to the described main switch module of described ignition module mode control, and described load blocks is controlled to described ignition module condition monitoring and to described pilot switch module.

2. the control circuit of automobile-used electric machine control system low quiescent current according to claim 1; it is characterized in that: described main switch module comprises the PMOS pipe; first resistance and first electric capacity; described ignition module comprises and door; described pilot switch module comprises the NMOS pipe and second resistance; described load blocks comprises the load unit and second electric capacity; described first resistance connects the S utmost point and the G utmost point of described PMOS pipe; described first electric capacity connects the D utmost point and the G utmost point of described PMOS pipe; described normalizing module mouth connects the S utmost point of described PMOS pipe; described first input end with door is connected described ignition module mouth and load unit respectively; described second input end with door is connected described load unit; described mouth with door is connected the G utmost point of described NMOS pipe by described second resistance; the D utmost point of described NMOS pipe connects the G utmost point of described PMOS pipe; the S utmost point ground connection of described NMOS pipe, described second electric capacity connects the D utmost point and the ground terminal of described PMOS pipe.