Power-assisted integrated device control system

Abstract

The utility model provides a power-assisted integrated device control system, which relates to the technical field of new energy passenger cars and comprises a power steering pump, a brake power-assisted air pump, a high-low pressure double-source controller, a double-source motor, an electromagnetic clutch, a control interface module and a sensor. The power steering pump is connected with the double-source motor, and the double-source motor is connected with a crankshaft of the power brake air pump through the electromagnetic clutch. The high-low voltage double-source controller is electrically connected with the vehicle control unit through the CAN bus module, and the high-low voltage double-source controller is used for receiving an upper control signal and controlling the double-source motor to work according to the upper control signal; according to the power-assisted steering and braking device, a power-assisted steering device and a braking device are integrated, so that the whole vehicle is light in weight, meanwhile, the automatic control and adjustment functions are achieved, and the purposes of reasonably using energy, saving energy and reducing emission are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy bus technology field, concretely relates to a kind of power-assisted integrated device control system. BACKGROUND

[0002] Electric power-assisted brake system has great advantages in automobile active safety and intelligent driving function implementation. Currently, different automobile parts manufacturers and colleges are actively promoting different configurations of electric power-assisted brake system solutions. The electric power-assisted brake, ESC (Electronic Speed Controller), and active accumulator (Smart Actuator) are set separately. This solution has more actuators and is not compact in structure. Alternatively, the brake energy recovery decoupling solution is integrated in ESC or electric power-assisted brake. This solution, which is implemented through the cooperative work of electric power-assisted brake and ESC, is also relatively complicated.

[0003] Currently, new energy buses are equipped with electric hydraulic steering systems and electric pneumatic brakes, which are stable and reliable. However, they also have problems such as large weight and size, low steering and brake energy utilization rate, inability to achieve intelligent and safe steering and brake control of vehicles, and difficulty in integrating brake system control and actuator. These are problems that the future development of automobile steering and brake systems needs to address.

[0004] In summary, how to overcome the above-mentioned defects is a problem that needs to be solved by technicians in the field. INVENTION CONTENTS

[0005] The present solution addresses the problems and needs mentioned above and proposes a power-assisted integrated device control system. This system can solve the above technical problems by adopting the following technical solutions.

[0006] To achieve the above-mentioned purposes, the utility model provides the following technical scheme: a power-assisted integrated device control system, comprising: a steering assist pump, a brake assist air pump, a high-low voltage dual-source control module, an electromagnetic clutch, a control interface module, and a sensor. The high-low voltage dual-source control module includes a high-low voltage dual-source controller and a dual-source motor.

[0007] The steering assist pump is connected to the dual-source motor. The dual-source motor is connected to the crankshaft of the brake assist air pump through the electromagnetic clutch. The dual-source motor integrates and drives the steering assist pump and the brake assist air pump.

[0008] The high-low voltage dual-source controller is electrically connected to the vehicle controller through a CAN bus module. The high-low voltage dual-source controller is used to receive upper control signals and control the dual-source motor according to the upper control signals.

[0009] The sensor is electrically connected with a control interface module, and the control interface module is used for transmitting the collected device parameter information to a vehicle controller.

[0010] Further, the wind cooling and radiating fan and the heat dissipation fairing arranged on the wind cooling and radiating fan are further included, the heat dissipation fairing can guide the direction of wind, the wind cooling and radiating fan is connected with the vehicle controller through the control interface module, the wind cooling and radiating fan is arranged on the side of the brake booster air pump, and the wind cooling and radiating fan is used for radiating the brake booster air pump.

[0011] Further, the high-low pressure dual-source controller includes a high-pressure controller and a low-pressure controller.

[0012] Further, the brake booster air pump is an air compressor.

[0013] Further, the sensor includes an electromagnetic sensor.

[0014] From the above technical solution, it can be seen that the utility model has the advantages that: the new energy bus brake booster device and the steering booster device are integrated into one integrated device, which can reduce the weight of the vehicle, reduce energy consumption, reduce the cost of components, achieve the effect of green energy saving and emission reduction, and make the booster control more accurate, and can also increase the endurance of the vehicle, and the working temperature can be reduced through the wind cooling and radiating fan and the heat dissipation fairing, so as to avoid affecting the normal work of the motor and the electromagnetic clutch.

[0015] In addition to the purposes, features and advantages described above, the most optimal embodiments of the utility model will be described in more detail below in combination with the drawings, so as to easily understand the features and advantages of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings needed to be used in the description of the embodiments of the utility model or the prior art will be briefly introduced below, wherein the drawings are only used to show some embodiments of the utility model, and the utility model is not limited to this.

[0017] Fig. 1 It is a component structure schematic view of the utility model kind of power-assisted integrated device control system.

[0018] Fig. 2 It is still another structure schematic view of the utility model kind of power-assisted integrated device control system.

[0019] Reference signs:

[0020] Steering booster pump-1, brake booster air pump-2, high-low pressure dual-source control module 3, electromagnetic clutch-4, control interface module-5, crankshaft-6, wind cooling and radiating fan-7. DETAILED DESCRIPTION

[0021] In order to make the technical scheme of the utility model, the technical scheme and the advantages of the utility model more clear, the following will be combined with the drawings of the utility model embodiment to make a clear and complete description of the technical scheme of the utility model embodiment. The same reference signs in the drawings represent the same parts. It should be noted that the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] The application starts from optimizing layout, reducing weight and effectively utilizing battery energy, and designs a composite simplification device for a pure electric bus chassis, which adopts a motor to drive a steering assist pump 1 and a brake assist air pump 2. The energy utilization rate is improved, and the intelligent steering and brake control of the new energy bus are realized. Specifically, the application discloses a power-assisted integrated device control system, as shown in the figure, which comprises a steering assist pump 1, a brake assist air pump 2, a high-low voltage dual-source control module 3, an electromagnetic clutch 4, a control interface module 5 and a sensor. Figs. 1-2 The high-low voltage dual-source control module 3 comprises a high-low voltage dual-source controller and a dual-source motor. The high-low voltage dual-source controller is electrically connected to the vehicle controller through a CAN bus module, and is used for receiving an upper control signal sent by the vehicle controller and controlling the dual-source motor to work according to the upper control signal. The low voltage can be controlled in the emergency situation of high voltage disconnection, wherein the high-low voltage dual-source controller comprises a high voltage controller and a low voltage controller. The steering assist pump 1 is connected to the dual-source motor, and the dual-source motor is connected to the crankshaft 6 of the brake assist air pump 2 through the electromagnetic clutch 4, and the steering assist pump 1 and the brake assist air pump 2 are integrated and driven by the high-low voltage dual-source controller and the dual-source motor.

[0023] If the power battery or other system of the electric bus has a serious fault during driving, the vehicle controller needs to cut off the high voltage, and the steering assist state needs to be continuously maintained. In order to realize the high-voltage steering function and the steering function when the high voltage is disconnected, a high-low voltage dual-source control mode is adopted, the high-low voltage dual-source controller comprises a high voltage controller and a low voltage controller, and the dual-source motor comprises independent high voltage winding and low voltage winding. Thus, the high-voltage steering function can be realized, and the steering function can be realized by low voltage when the high voltage is disconnected.

[0024] In the embodiment, the vehicle controller can monitor the working state of the dual-source electric power-assisted steering part through the CAN bus interface, and give a signal to the high-low voltage dual-source controller through CAN communication in the case of high voltage failure, so as to quickly start the low voltage and ensure the continuous work of the electric power-assisted steering.

[0025] In this embodiment, the sensor is electrically connected with the control interface module 5, and then transmits the collected device parameter information through the control interface module 5. The sensor is connected with the CAN bus module through the control interface module 5, and transmits the collected device parameter information to the vehicle controller. The sensor includes a motor speed measuring sensor and the like, and the device parameter information includes motor speed, position, voltage and current information and the like.

[0026] As shown in Fig. 2 The application also includes an air-cooled cooling fan 7, which is connected with the vehicle controller through the control interface module 5. The vehicle controller can control the motor to drive the air-cooled cooling fan 7 to work. The air-cooled cooling fan 7 is arranged on the side of the brake assist air pump 2, and is used for cooling the brake assist air pump 2. The brake assist air pump 2 is an air compressor. The air-cooled cooling fan 7 is driven by another motor. The input end of the motor is electrically connected with the output end of the vehicle controller, and the output end of the motor is electrically connected with the input end of the air-cooled cooling fan 7.

[0027] In the brake assist air pump 2, the piston is rubbed with the cylinder wall, and the piston continuously compresses the air to do work to generate a large amount of heat. The heat is mainly conducted to the air by the cylinder wall shell heat dissipation fins for dissipation. A part of the heat is also conducted along the cylinder body to the electromagnetic clutch 4 and the high-low pressure dual-source motor module. The temperature of the high-low pressure dual-source motor module and the electromagnetic clutch 4 is increased, which may cause demagnetization. Demagnetization will cause the brake and steering system to fail, which is very dangerous. Even if there is no demagnetization, long-term work at high temperature will also affect the stability and reliability of the device. Therefore, cooling needs to be performed in time.

[0028] In this embodiment, the vibration of the assist integrated device is mainly caused by the brake assist air pump 2. The air brake system has the advantages of faster brake response, larger brake force and shorter braking distance compared with the hydraulic brake system, so it is widely used in electric buses. However, during the pumping process, the noise in the vehicle becomes larger, the seat vibration becomes larger, and the metal knocking sound occurs, which seriously affects the comfort of the driver in the vehicle. In order to make the device have higher integration and smaller size, the belt transmission is not used for vibration isolation between the dual-source motor and the brake assist air pump 2 in the utility model, but the direct connection mode of the motor plus the electromagnetic clutch 4 and the brake assist air pump 2 is realized, which increases the weight of the brake assist air pump 2 and reduces the vibration of the air pump.

[0029] In the embodiment, the high-low voltage dual-source controller is a high-low voltage dual-source DC / AC integrated controller, the dual-source motor is a dual-winding permanent-magnetic dual-source steering motor, the dual-source motor includes independent high-voltage winding and low-voltage winding, high-voltage steering can be realized, and steering function can be realized by low voltage when high-voltage power is off. The steering assist pump 1 is a vane type steering assist pump 1, the dual-source motor is directly connected with the steering assist pump 1, the dual-source motor works after the vehicle is started, the steering assist pump 1 provides assist oil pressure for steering, and the oil pressure is kept constant through an overflow valve. The dual-source motor is connected with the crankshaft 6 of the brake assist air pump 2 through an electromagnetic clutch 4, compressed gas is stored in a cylinder when the brake assist air pump 2 works, when the cylinder reaches a certain pressure, the electromagnetic clutch 4 is controlled to be disconnected, when the cylinder pressure is insufficient, the electromagnetic clutch 4 starts to work, and continues to compress air. The air brake system realizes the function of whole vehicle brake braking by using the air pressure in the cylinder. The steering assist and brake assist devices are integrated together, which can reduce the cost of parts, reduce the weight and volume of two sets of systems, and realize the energy saving purpose of the new energy bus. And the safety of driving and the reasonable use of energy are improved.

[0030] It should be noted that the embodiments of the utility model only realize the preferred mode of the utility model, and the changes which only belong to the overall concept of the utility model and are obvious should all belong to the protection scope of the utility model.

Claims

1. A power-assistance integrated device control system, characterized in that: include: A power steering pump (1), a brake power pump (2), a high-low voltage dual-source control module (3), an electromagnetic clutch (4), a control interface module (5) and a sensor, wherein the high-low voltage dual-source control module (3) includes a high-low voltage dual-source controller and a dual-source motor; The power steering pump (1) is connected to the dual-source motor, and the dual-source motor is connected to the crankshaft (6) of the brake booster air pump (2) via the electromagnetic clutch (4); The high-low voltage dual-source controller is electrically connected to the vehicle controller through a CAN bus module, and the high-low voltage dual-source controller is used to receive a higher-level control signal and control the operation of the dual-source motor according to the higher-level control signal; The sensor is electrically connected to the control interface module (5), and the control interface module (5) is used to transmit collected device parameter information.

2. The power assist integrated device control system according to claim 1, characterized in that: It also includes an air-cooling heat dissipation fan (7), which is connected to the vehicle controller via the control interface module (5). The air-cooling heat dissipation fan (7) is arranged on the side of the brake booster air pump (2), and is used to dissipate heat for the brake booster air pump (2).

3. The power assist integrated device control system according to claim 1, characterized in that: The high-low voltage dual-source controller includes a high-voltage controller and a low-voltage controller.

4. The power assist integrated device control system according to claim 1, characterized in that: The brake booster air pump (2) is an air compressor.

5. The power assist integrated device control system according to claim 1, characterized in that: The sensor comprises an electromagnetic sensor.

Images