CN2851005Y - High low voltage power controller of mixing power electric vehicle - Google Patents

Abstract

The utility model discloses a high and low voltage power supply control device for a hybrid electric vehicle, which comprises a third-gear switch of an ignition lock, the output end of the low-voltage gear in the third-gear switch of the ignition lock is connected to a control relay of a low-voltage electrical appliance, and the control relay of the low-voltage electrical appliance The contacts of the relay are set in the main circuit of the low-voltage electrical appliance; the output end of the high-voltage gear in the third gear switch of the ignition lock is connected to the multi-channel control switch, and the output end of the multi-channel control switch is connected to the control relay of the high-voltage electrical appliance, and the high-voltage electrical appliance The contact of the control relay is in the main circuit of the high-voltage electrical appliance; the multi-way control switch is also connected to the protection signal control terminal; the output terminal of the start gear in the third-gear ignition lock is connected to the driving preparation control relay. In addition to low-voltage power supply control, the device also controls high-voltage power supply, controls various pumps, and processes, controls and executes protection signals. Its control structure is simple and its performance is good.

Description

Hybrid electric vehicle high and low voltage power supply control device

technical field

The utility model belongs to a special power supply control device for electric vehicles and hybrid electric vehicles, in particular to the power supply control of the 336V high-voltage power supply and the power supply control of the 12V low-voltage power supply on the electric vehicle.

Background technique

In addition to maintaining the ignition lock control engine of the original traditional car, hybrid electric vehicles also have drive motors and their controllers, power battery packs and their controllers, vehicle multi-energy controllers, high-voltage power switches and their circuits, intelligent Instruments, pumps, etc. All unit parts run on 12V power supply. This requires a device that can realize simultaneous control of high and low voltage power supply.

Contents of the invention

The purpose of the utility model is to provide a device capable of simultaneously controlling high and low voltage power supply for electric vehicles and hybrid electric vehicles.

The technical scheme of the utility model is: a hybrid electric vehicle high and low voltage power supply control device, which includes a third-gear ignition lock, the output end of the low-voltage gear in the third-gear switch of the ignition lock is connected to the control relay of the low-voltage electrical appliance, and the control relay of the low-voltage electrical appliance The contacts of the relay are set in the main circuit of the low-voltage electrical appliance; the output end of the high-voltage gear in the third gear switch of the ignition lock is connected to the multi-channel control switch, and the output end of the multi-channel control switch is connected to the control relay of the high-voltage electrical appliance, and the high-voltage electrical appliance The contact of the control relay is in the main circuit of the high-voltage electrical appliance; the multi-way control switch is also connected to the protection signal control terminal; the output terminal of the start gear in the third gear switch of the ignition lock is connected to the driving preparation control relay.

In addition to retaining the functions of the traditional automobile ignition lock, this device has added the following functions. In addition to low-voltage power supply control, the device also controls the high-voltage power supply, logically controls the operating signals of the relevant systems, and controls various pumps. Control, processing, control and execution of protection signals. Its control structure is simple and its performance is good. Suitable for control on electric vehicles and hybrid electric vehicles.

Description of drawings

Attached is the circuit diagram of the high and low voltage power supply control device for hybrid electric vehicles

Detailed ways

Each output of the three output terminals of the third-gear ignition lock can realize multi-channel control, that is, multiple-channel high-voltage control and multiple-channel low-voltage control. In this embodiment, as shown in the accompanying drawings, the output end of the low-voltage gear in the third-gear ignition lock, that is, the output end of the "ACC" gear of the ignition lock is connected to the control relay J1 of the low-voltage electrical appliance, and the contact of the control relay J1 is set on the low-voltage gear. In the main circuit of electrical appliances, circuit appliances include AMT, steering pump, DC/DC, vacuum pump, water pump, vehicle ECU, motor ECU, battery ECU, protection unit, instrument, battery fan, etc.

The output end of the high-voltage gear in the third-gear ignition lock, that is, the "ON" gear, is connected to the multi-way control switch J2, and the signal control end of the multi-way control switch J2 is connected to the protection unit. The output end of the multi-channel control switch J2 is connected to the control relay of the high-voltage electrical appliance. The control relay of the high-voltage electrical appliance includes a parallel high-voltage positive terminal control relay CJ2, a high-voltage negative terminal control relay CJ1 and a high-voltage positive terminal charging control relay CJ3. The contact of the control relay of the high-voltage electrical appliance is in the main circuit of the high-voltage electrical appliance; the contact of the specific high-voltage positive terminal control relay CJ2 and the contact of the high-voltage positive electrode charging control relay CJ3 are connected in parallel to the positive pole of the high-voltage power supply; the high-voltage negative terminal control The contacts of the relay CJ1 are connected to the negative pole of the high-voltage power supply; the contacts of the high-voltage negative pole control relay CJ1, the contacts of the high-voltage positive pole control relay CJ2, and the contacts of the high-voltage positive pole charging control relay CJ3 are connected to the motor controller. The control signal terminal of the motor controller is connected with the high voltage positive terminal control relay CJ2.

The output end of the multi-channel control switch J2 is also connected to the control switches J5 and J6 of the vacuum pump and the water pump.

The output end of the starting gear in the third-gear ignition lock, that is, the "START" gear, is connected to the driving preparation control relay J4; at the same time, it is also connected to the steering pump control relay J8; the steering pump control relay J8 is also connected to the protection control signal terminal of the multi-channel control switch J2.

The principle of the control device is:

When the "ACC" gear of the ignition lock is turned on, the low-voltage power supply relay J1 works, and the low-voltage power supply is turned on to supply power to each unit. At this stage, each system performs self-inspection, and if the self-inspection passes or fails, it will send a "prohibited" or "permitted" signal to the device.

When turning on the "ON" position of the ignition lock, turn on the high-voltage negative switch CJ1 and the positive charging switch CJ3 to charge the energy storage capacitor of the motor controller. When the charging voltage of the two-terminal voltage of the capacitor reaches 80% of the power supply voltage, the motor controller sends out an "80%" signal, and the device automatically turns on the high-voltage positive main switch CJ2 without receiving the "prohibited" signal, and at the same time allows In the next step of operation, the "START" gear of the ignition lock is controlled to connect the water pump and the vacuum pump to work at the same time.

When the "START" gear of the ignition lock is turned on, the power steering pump is started to work, and at the same time, a "ready to drive" signal is sent to the vehicle controller. After the vehicle controller receives this signal, it will send a "permission to drive" signal to the motor controller in combination with the vehicle's driving conditions.

After the "ACC" gear of the ignition lock, as long as there is a fault signal, the device will prohibit the high voltage from being connected before the high voltage switch is connected. If the high-voltage switch has been turned on, the device will immediately turn off the high-voltage switch CJ1, CJ2 and stop running to ensure safety.

Claims (5)

1, a kind of hybrid electric vehicle high-low voltage power source control setup, it comprises the ignition lock third gear switch, it is characterized in that the mouth of the low pressure shelves of third gear switch in the ignition lock connects the control relay of low-voltage electrical appliance, the contact of the control relay of low-voltage electrical appliance is located in the power circuit of low-voltage electrical appliance; The mouth of the high pressure shelves in the third gear ignition lock connects the multichannel master cock, and the mouth of multichannel master cock connects the control relay of high pressure current consumer, and the contact of the control relay of high pressure current consumer is in the power circuit of high pressure current consumer; The multichannel master cock also connects the guard signal control end; The mouth of the startup retaining in the third gear ignition lock connects driving prepare control relay.

2, hybrid electric vehicle high-low voltage power source control setup according to claim 1, the control relay that it is characterized in that the high pressure current consumer comprises high-voltage positive electrode end control relay in parallel, high voltage negative end control relay and high-voltage positive electrode charging control relay.

3, as hybrid electric vehicle high-low voltage power source control setup as described in the claim 2, it is characterized in that high-voltage positive electrode end control relay also connects high tension supply electric energy control signal end.

4, hybrid electric vehicle high-low voltage power source control setup according to claim 1; the mouth that it is characterized in that the startup retaining in the third gear ignition lock also connects the steering pump control relay, and the steering pump control relay also connects the protection control signal end of multichannel master cock.

5, hybrid electric vehicle high-low voltage power source control setup according to claim 1 is characterized in that the mouth of multichannel master cock also connects vacuum pump, water pump control switch.

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