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Safety system of mix dynamical automobile

A hybrid vehicle, safety protection technology, applied in electric vehicles, vehicle safety arrangements, pedestrian/occupant safety arrangements, etc., can solve problems such as no solution found, and achieve the effect of avoiding injury

Active Publication Date: 2008-04-09
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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  • Safety system of mix dynamical automobile
  • Safety system of mix dynamical automobile

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Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1: As shown in Figure 1, a control switch (triode) is connected to the 12v power supply in the vehicle controller HCU, and an enable control signal 1 is connected to the base of the triode from the vehicle controller HCU. The emitter is connected to one end of the collision sensor 2, and the other end connected to the collision sensor 2 is connected to two series-connected open circuit protection sensors 3, 4, and the output terminal of the open circuit protection sensor 4 is connected to two series-connected control relays 7, 6, and the control relay 6 The output terminal is grounded, and a diode is connected between the ground terminal and the output terminal of the sensor 4. The signal control loop is formed above, and the feedback signal 1 is connected to the collision sensor 2 to the vehicle controller HCU. The output end connects the feedback signal 2 to the motor controller MCU.

[0025] Connect the contacts of the two control relays 7 and 6 in series,...

Embodiment 2

[0030] Such as figure 2 Provided is a method for program controlling the safety protection system of Embodiment 1 by using the vehicle controller HCU, which includes the following steps:

[0031] When the program starts, the controller HCU sends a high-level control signal 1,

[0032] Then the first step: first collect signal 1, signal 2, signal 3,

[0033] Step 2: Judge the status of these signals. If they are all high, it means the system is normal. The system continues to collect and return to the first step to collect signals. If any of the signals is low, it means that the system is in a fault state. and go to the next step;

[0034] Step 3: Disconnect the power supply of the circuit breaker;

[0035] Step 4: Then the high-voltage circuit is also disconnected;

[0036] Step 5: Judgment: If signal 1 and signal 2 are at high level and signal 3 is at low level, it is in the loop interlock protection state and enters HCU loop interlock protection program 1; otherwise it i...

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PUM

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Abstract

A safety protection system for hybrid vehicles is characterized in that the invention consists of a signal control loop formed by connecting a collision sensor 2, open circuit protection sensors 3, 4 and control relays 7,6 in series, and a high-voltage ring circuit interlocked loop formed by connecting contact points of the control relays 7,6 and an open circuit relay 9 of a power battery in series; an entire controller HCU provides 12v power for the loop and connects with a control switch at an input end and provides a control signal Enable; the open circuit relay 9 also connects with a control switch and shares the control signal Enable; when in danger, the high-voltage loop can cut off automatically and can release the residual charge on the driving side of a motor; when vehicles are collided, the ring circuit interlocking can cut off the high-voltage loop automatically to prevent the battery from shot cutting, and to prevent people from being attacked by the electricity of the high-voltage loop.

Description

Technical field: [0001] The invention relates to the control field of a hybrid electric vehicle, in particular to the field of safety protection of a high-voltage power supply in a hybrid electric vehicle. technical background [0002] In order to solve the fuel consumption and emission problems of ordinary cars, people began to develop electromechanical hybrid drive systems. When high power is required for climbing, the electric energy of the battery is used to drive the motor to generate auxiliary torque to assist the engine to drive the vehicle; when the vehicle is decelerating, the motor is used to provide braking torque to make the motor generate power to charge the power battery, thereby reducing the energy loss of the vehicle , improve its energy utilization rate, and finally achieve the purpose of saving fuel. The power battery in a hybrid electric vehicle is a high-voltage battery, and its voltage level has exceeded the safe voltage level of the human body, posing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/04B60R21/0136
Inventor 彭庆丰
Owner CHERY AUTOMOBILE CO LTD
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