CN203958123U - The regenerative brake fast aeration system of servo control - Google Patents

Abstract

The utility model relates to an automobile system, in particular to a relay-controlled regenerative braking fast inflation system. The relay valve is a differential relay valve with two control ports, the air inlet and outlet of the brake valve are respectively connected with the air reservoir and the first control port of the differential relay valve through pipelines, the The air outlet of the quick inflation valve is connected with the second control port of the differential relay valve through a pipeline. According to the requirements of the air pressure controller, the utility model can speed up the inflation of the brake air chamber no matter what position the brake valve pedal is in, so that the air pressure of the air chamber can be increased to meet the air pressure mechanical control of the brake of the whole vehicle. The time coordination between braking and motor braking ensures the smoothness and safety of regenerative braking.

Description

Relay Controlled Regenerative Braking Rapid Inflation System

technical field

The utility model relates to an automobile system, in particular to a regenerative braking rapid inflation system with relay control.

Background technique

At present, in the development of new energy vehicles, the application of regenerative braking is becoming more and more common. In the air-driven braking system, according to the change of the braking torque of the motor during regenerative braking, the brake air chamber of the relevant axle should be adjusted as soon as possible. Air pressure, in order to achieve the gapless cooperation between motor brake and traditional pneumatic mechanical brake, is one of the basic research tasks that determine the success or failure of regenerative braking system development.

At present, the general regenerative braking system is to connect the brake valve between the control port of the relay valve and the air storage tank, and press the brake pedal to open the air inlet of the relay valve, so that the compressed air is released from the air storage tank. Directly enter the brake chamber through the air inlet instead of flowing through the brake valve, which greatly shortens the charging line of the brake chamber. However, this regenerative braking inflation structure cannot meet the time requirements for rapid inflation of the brake chamber during pneumatic mechanical braking, which often leads to a sudden increase in the braking torque of the vehicle during the switching process between motor braking and pneumatic mechanical braking. The sudden and small phenomenon affects the safety of the vehicle's service brake.

In order to solve the above problems, another structure has appeared on the market, adding a quick charging valve to the structure of the regenerative braking system. Under the control of the air pressure controller, the quick inflation valve can open the channel between the air storage tank and the brake air chamber, supplement the air path from the relay valve to the brake air chamber, and accelerate the rising speed of the brake air pressure . The inflation structure with the addition of the quick inflation valve speeds up the increase of the air pressure in the brake chamber, and satisfies the requirements for smoothness of regenerative braking to a certain extent. However, in the process of rapid inflation, the pipeline through the rapid inflation valve is used as the energy channel for the air supply. Due to the limitation of the volume of the rapid inflation valve itself, the hole diameter of the air passage through the valve body is small, which will affect the pressure of the brake chamber. One of the factors of ascent rate. Moreover, since the air outlet of the quick charging valve is connected between the relay valve and the brake chamber, it needs to be connected by a three-way pipe, so the arrangement of the pipe bundle of the vehicle is not simple enough.

Utility model content

The purpose of the utility model is to provide an energy-saving control system for a vehicle-mounted electric air compressor. According to the requirements of the air pressure controller, no matter what position the pedal of the brake valve is in, it can accelerate the inflation of the brake air chamber, so that the air pressure of the air chamber can be increased to meet the air pressure mechanical braking and mechanical braking of the vehicle brake. The time coordination between motor braking ensures the smoothness and safety of regenerative braking.

The technical scheme of the utility model is: a regenerative braking rapid inflation system with relay control, including a brake valve, an air storage tank, a relay valve, a rapid inflation valve, an air pressure regulating valve, an air pressure controller and a brake air chamber, The air inlet and air outlet of the relay valve are respectively connected to the air storage tank and the brake air chamber through pipelines, and the air storage tank is connected to the air inlet of the quick charging valve through pipelines, and the air pressure control valve is located at On the pipeline between the air outlet of the relay valve and the brake chamber, the output ends of the air pressure controller are electrically connected to the air pressure regulating valve and the quick charging valve respectively, the relay valve is a differential relay valve, and the The air inlet and air outlet of the brake valve are respectively connected to the air reservoir and the first control port of the differential relay valve through pipelines, and the air outlet of the fast charging valve is connected to the second control port of the differential relay valve through pipelines. Control port connection.

Further, the quick inflation valve is a solenoid valve.

The beneficial effects of the utility model are: the utility model connects the air outlet of the quick charging valve to the differential relay valve with two control ports, so that the vehicle can fully open the relay when the regenerative braking is required. The air outlet valve of the valve, in order to achieve the maximum air pressure growth rate of the brake chamber, can meet the time coordination between the air pressure mechanical brake and the motor brake of the vehicle brake, and ensure the smoothness and safety of regenerative braking; at the same time, due to Adopting the method of relay control, the air outlet of the quick inflation valve is directly connected to the control port of the relay valve, and there is no need to use a three-way valve to connect the three sections of pipelines, so the connecting pipeline is simpler than before, which is convenient for the whole vehicle. Tube bundle arrangement.

Description of drawings

Fig. 1 is a schematic structural diagram of the prior art;

Fig. 2 is a structural representation of the utility model;

In the figure: 1—brake valve, 2—air storage tank, 3—relay valve, 4—air pressure control valve, 5—quick inflation valve, 6—brake chamber, 7—air pressure controller, 8—pipeline, 9—wire harness, 10—differential relay valve, 10.1—first control port, 10.2—second control port.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Figure 1 is a schematic diagram of the prior art, the system includes a brake valve 1, an air storage tank 2, a relay valve 3, an air pressure regulating valve 4, a quick charging valve 5, a brake air chamber 6 and an air pressure controller 7. The air inlet and air outlet of the relay valve 3 are respectively connected to the air reservoir 2 and the brake chamber 6 through the pipeline 8, and the air pressure regulating valve 4 is arranged in the pipe between the air outlet of the relay valve 3 and the brake chamber 6. On the road, the air storage tank 2 and the quick inflation valve 5 are connected through a pipeline 8, and the outlet of this section of pipeline is connected between the relay valve 3 and the air pressure control valve 4. The quick inflation valve 5 is an electromagnetic valve with the model number 3754010-T0101. valve. The output end of the air pressure controller 7 is electrically connected with the air pressure regulating valve 4 and the quick charging valve 5 through the wiring harness 9 respectively, and the air inlet and the air outlet of the brake valve 1 are respectively connected with the air storage tank 2 and the relay valve 3 through the pipeline 8. The first control port 3.1 is connected. This kind of inflation structure that increases the fast charging valve 5 speeds up the increase of the air pressure in the brake chamber 6, and satisfies the requirements for smoothness of regenerative braking to a certain extent. The pipeline is used as the energy channel for the air supply, limited by the volume of the fast charging valve itself, the hole diameter of the air passage through the valve body is small, which will become one of the factors affecting the rising speed of the brake air pressure. Moreover, since the air outlet of the quick charging valve 5 needs to be connected with the three-way pipe between the relay valve 3 and the brake chamber 6, the arrangement of the tube bundle of the vehicle is not simple enough.

Fig. 2 is a structural schematic diagram of the utility model. The utility model adopts a differential relay valve 10 with two control ports, and the model of the differential relay valve is 3527RC16-001. Connect the air storage tank 2 to the first control port 10.1 of the differential relay valve 10, and move the output pipeline of the quick inflation valve 5 from the original position between the relay valve 3 and the air pressure control valve 4 to the differential relay On the second control port 10.2 of the valve 10.

Its working principle is as follows: the brake valve 1 is connected with the air reservoir 2 and the differential relay valve 10 through the pipeline 8, when the pedal of the brake valve 1 is not stepped on by the driver, the brake valve 1 and the differential relay valve 10 There is no air pressure in the pipeline between the brake valve 1 and the pedal gradually, the air pressure between the brake valve 1 and the differential relay valve 10 also increases in proportion to the pedal depression angle, and the pressure of the differential relay valve 10 When there is no air pressure at the control port, the air inlet of the differential relay valve 10 is closed, so there is no gas at the air outlet. When the air pressure at the first control port 10.1 increases to the point where the air inlet switch is opened, the differential relay valve 10 starts to inflate the brake chamber 6, and the air pressure at the air outlet of the differential relay valve 10 will follow the pressure of the first control port. 10.1 The size of the air pressure rises proportionally. The brake valve 1 pedal will give the air pressure controller 7 a brake electric signal when stepped on, so the air pressure controller 7 performs electrical command control to the quick inflation valve 5 and the air pressure regulating valve 4 connected by the wiring harness. Wherein the size of the air outlet of the air pressure regulating valve 4 is adjustable, and is used to control the inflation speed. When the quick inflation valve 5 receives the inflation signal from the air pressure controller 7, the outlet valve of the quick inflation valve 5 will open to release the high-pressure gas to the second control port 10.2 of the differential relay valve 10, because the quick inflation valve 5 It is fully open, so the air pressure at the second control port 10.2 is the air pressure at the air outlet of the air reservoir 2, and the pressure of the high-pressure air is generally greater than the air pressure at the first control port 10.1 where the brake valve 1 is connected to the differential relay valve 10 , the second control port 10.2 promotes the full opening of the air outlet of the differential relay valve 10 to inflate the brake chamber 6 at the maximum speed. When there is no need for quick inflation, the quick inflation valve 5 is in a closed state, and the inflation speed is still directly proportional to the angle at which the pedal is depressed.

Since the air inlet of the relay valve can be fully opened by opening the quick charging valve 5, the air pressure growth rate of the brake air chamber can be maximized, and the time coordination between the air pressure mechanical brake and the motor brake of the vehicle brake can be satisfied. , to ensure the smoothness and safety of regenerative braking; at the same time, because of the relay control method, there is no need to use a three-way pipe to connect the outlet of the quick charging valve 5 to the pipeline behind the relay valve, and the entire connecting pipeline is relatively simple and convenient. The tube bundle arrangement of the whole vehicle.

The above is only a specific embodiment of the present utility model. It should be pointed out that any changes or replacements that can be easily imagined by those skilled in the art within the technical scope disclosed in the present utility model should be covered by the present utility model. within the scope of protection.

Claims (2)

1. the regenerative brake fast aeration system of a servo control, comprise brake activation valve, air tank, relay valve, fast filling valve, air pressure controlling valve, gas pressure regulator and compressed air brake cylinder, the admission port of described relay valve is connected with air tank and compressed air brake cylinder respectively by pipeline with air extractor duct, between described air tank and fast filling valve admission port, be connected by pipeline, described air pressure controlling valve is located on the pipeline between relay valve air extractor duct and compressed air brake cylinder, the mouth of described gas pressure regulator is electrically connected with air pressure controlling valve and fast filling valve respectively, it is characterized in that: described relay valve is differential relay valve, the admission port of described brake activation valve is controlled mouth with first of air tank and differential relay valve with air extractor duct respectively by pipeline and is connected, the air extractor duct of described fast filling valve is controlled mouth by second of pipeline and differential relay valve and is connected.

2. the regenerative brake fast aeration system of a kind of servo control as claimed in claim 1, is characterized in that: described fast filling valve is electromagnetic valve.