CN202806406U

CN202806406U - High-pressure crash safety system of new-energy passenger car

Info

Publication number: CN202806406U
Application number: CN 201220492764
Authority: CN
Inventors: 崔海龙; 高史贵
Original assignee: Beijing Zhixing Hongyuan Automobile Technology Co Ltd
Current assignee: Beijing Zhixing Hongyuan Automobile Technology Co Ltd
Priority date: 2012-09-21
Filing date: 2012-09-21
Publication date: 2013-03-20
Anticipated expiration: 2022-09-21

Abstract

The utility model relates to a high-pressure crash safety system of a new-energy passenger car. The high-pressure crash safety system comprises a vehicle controller, a motor controller, a battery manager and a direct current converter. The vehicle controller is connected with the battery manager and the motor controller through a high-speed controller area network (CAN) bus. The motor controller is connected with a power battery in series. The direct current converter and a capacitor are connected between the motor controller and the power battery in parallel. The battery manager is connected with a main contactor and a cathode contactor in series. The main contactor is connected with an inertia switch on the car. The inertia switch is connected with an external power supply and the vehicle controller. The high-pressure crash safety system has the advantages of ensuring disconnection of the power battery in a crash and improving reliability of direct disconnection of high pressure of the system through the inertia switch which is directly disconnected with the main contactor, and ensuring that voltage of the bus and the capacitor is reduced below the safe value and improving security of passengers through electricity discharge treatment of the direct current converter and the motor controller to a high-pressure system in the crash.

Description

A kind of new forms of energy manned vehicle high pressure collision safety system

Technical field

The utility model relates to a kind of new forms of energy manned vehicle high pressure collision safety system.

Background technology

For breaking away from the dependence to day by day exhausted oil resources, reduce the orthodox car exhaust emissions to the gross pollution of environment, new forms of energy manned vehicle (comprising pure electric automobile and hybrid vehicle) more and more is subjected to the attention of countries in the world.The new forms of energy manned vehicle generally is to use the high-tension current of 100V ~ 400V to move at present, its maximum speed is quite fast, in the situation of this high speed, people are for these new forms of energy manned vehicles of operation of safety, need to design the safety measure system that a cover is used for electric energy, because, if because manned vehicle collision or analogue cause circuit damaged, then can cause the high voltage electric energy in the manned vehicle to be revealed, can have a strong impact on by bus personnel's life security, yet in the market, the high pressure collision safety system on the new forms of energy manned vehicle also not occurring can be used in, is necessary so research and develop a kind of for high pressure collision safety system on the new forms of energy manned vehicle.

The utility model content

The purpose of this utility model provides a kind of new forms of energy manned vehicle high pressure collision safety system, it adopts inertia switch directly to disconnect main contactor, high-pressure system during to collision is carried out discharge process, the safety when guaranteeing that by ambilateral safety measure the new forms of energy manned vehicle uses by direct current transducer and electric machine controller simultaneously.

The purpose of this utility model is to be achieved through the following technical solutions:

A kind of new forms of energy manned vehicle high pressure collision safety system, comprise entire car controller, electric machine controller, battery manager and direct current transducer, it is connected with electric machine controller described entire car controller by high-speed CAN bus and battery management, be in series with electrokinetic cell on the electric machine controller, be parallel with direct current transducer and electric capacity between electric machine controller and the electrokinetic cell, be in series with main contactor and negative pole contactless switch on the described battery manager, main contactor is connected with inertia switch on the vehicle, inertia switch is connected with external power supply and entire car controller, and the negative pole contactless switch is connected with the external ground line.

Further, the series loop of electric machine controller and electrokinetic cell is provided with some switches.

The beneficial effects of the utility model are: 1, directly disconnect main contactor by inertia switch, the disconnection of electrokinetic cell when having guaranteed to bump; Improved the reliability that system high pressure directly disconnects.2, the high-pressure system during to collision is carried out discharge process by direct current transducer and electric machine controller, guaranteed that bus capacitor voltage is down to below the safety value, has improved the safety that personnel by bus ride.

Description of drawings

The below is described in further detail the utility model with reference to the accompanying drawings.

Fig. 1 is the electrical principle block diagram of the described a kind of new forms of energy manned vehicle high pressure collision safety system of the utility model embodiment.

Among the figure:

1, entire car controller; 2, battery manager; 3, electric machine controller; 4, direct current transducer; 5, electrokinetic cell; 6, electric capacity; 7, main contactor; 8, negative pole contactless switch; 9, inertia switch; 10, external power supply.

The specific embodiment

As shown in Figure 1, the described a kind of new forms of energy manned vehicle high pressure collision safety system of the utility model embodiment, comprise entire car controller 1, battery manager 2, electric machine controller 3 and direct current transducer 4, described entire car controller 1 is connected with electric machine controller by high-speed CAN bus and battery manager 2 and is connected, be in series with electrokinetic cell 5 on the electric machine controller 3, be parallel with direct current transducer 4 and electric capacity 6 between electric machine controller 3 and the electrokinetic cell 5, be in series with main contactor 7 and negative pole contactless switch 8 on the described battery manager 2, main contactor 7 is connected with inertia switch 9 on the vehicle, inertia switch 9 is connected with external power supply 10 and entire car controller 1, and negative pole contactless switch 8 is connected with the external ground line; Described electric machine controller 3 is provided with some switches with the series loop of electrokinetic cell 5.

During concrete the use, when collision happens surpasses the intrinsic unlatching threshold value of inertia switch 9, thereby inertia switch 9 cuts off the main switch that the power supply of main contactors 7 coils disconnects electrokinetic cell 5.After electrokinetic cell 5 was cut off, electric shock accidents when high-voltage wiring harness because of collision breakage occurs, easily occured still with high-tension current in high voltage bus electric capacity 6.The utility model is after detecting main contactor 7 disconnections at this moment, and direct current transducer 4 can be down to bus voltage its lower voltage limit value; After simultaneously entire car controller 1 detects inertia switch 9 and opens; send the active discharge instruction to electric machine controller 3 by high-speed CAN (controller local area network) bus; electric machine controller 3 control motor operations are dissipated in the high-tension current in the electric capacity on the high voltage bus 6 in the motor coil; thereby the high-tension current on the bus is down to rapidly below the safety voltage, reaches protection occupant's purpose.

The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but do any variation in its shape or structure; every have identical with a application or akin technical scheme, all drops within the protection domain of the present utility model.

Claims

1. new forms of energy manned vehicle high pressure collision safety system, comprise entire car controller (1), battery manager (2), electric machine controller (3) and direct current transducer (4), it is characterized in that: described entire car controller (1) is connected 3 with battery manager (2) with electric machine controller by high-speed CAN bus) be connected, be in series with electrokinetic cell (5) on the electric machine controller (3), be parallel with direct current transducer (4) and electric capacity (6) between electric machine controller (3) and the electrokinetic cell (5), be in series with main contactor (7) and negative pole contactless switch (8) on the described battery manager (2), main contactor (7) is connected with inertia switch (9) on the vehicle, inertia switch (9) is connected with external power supply (10) and entire car controller (1), and negative pole contactless switch (8) is connected with the external ground line.

2. a kind of new forms of energy manned vehicle high pressure collision safety system according to claim 1 is characterized in that: electric machine controller (3) is provided with some switches with the series loop of electrokinetic cell (5).