High-integration dual-redundancy motor driving and braking device

Abstract

The utility model relates to the technical field of braking devices, and discloses a high-integration dual-redundancy motor driving braking device which comprises a dual-redundancy motor unit, an EMB controller, a brake caliper body and a chassis domain controller, the dual-redundancy motor unit comprises a first driving motor and a second driving motor which are independently packaged in the same shell, and the first driving motor and the second driving motor are arranged in the shell. The independent transmission mechanisms are respectively connected; the EMB controller is in communication connection with the dual-redundancy motor unit, monitors the rotating speed, the torque and the temperature of the motor in real time, and controls start and stop and power output of the motor; the brake caliper body is connected with the dual-motor unit through a transmission mechanism, and motor power can be converted into brake clamping force. According to the high-integration dual-redundancy motor driving braking device, the problems that when an existing braking device is used, response delay, high-temperature performance degradation, single motor fault hidden danger and complex structure are prone to occurring are solved, and the goals of millisecond-level braking, safe and continuous operation, maintenance simplification and long service life are achieved.

Description

Technical Field

[0001] This utility model relates to the field of braking device technology, and in particular to a highly integrated dual-redundant motor drive braking device. Background Technology

[0002] Traditional electro-hydraulic braking devices suffer from multiple technical limitations. Relying on hydraulic lines for power transmission leads to significant response delays (standard response time approximately 120ms). During continuous braking, temperatures reaching a critical value of 200°C accelerate seal aging, resulting in a braking torque reduction exceeding 30%. The single-motor drive mode carries a risk of failure, and hydraulic systems require 40% more maintenance annually than electric systems. To address these issues, the new braking system abandons hydraulic transmission, adopting a direct-drive electric actuator equipped with a dual-motor redundant drive module (supporting fault switching within 50ms). Through integrated design, the size is reduced by more than 50%, while a built-in intelligent temperature control system ensures stable operation in environments ranging from 40°C to 180°C. The key technical targets for this new braking device are clearly defined: a braking command response time of 400ms and a braking torque adjustment accuracy of 2%.

[0003] However, existing braking devices are prone to problems such as response delay, high-temperature performance degradation, potential single motor failure, and complex structure during use. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to provide a highly integrated dual-redundant motor drive braking device, which solves the problems mentioned in the background art, such as response delay, high-temperature performance degradation, single motor failure risk and complex structure, which are common in existing braking devices. This invention aims to achieve millisecond-level braking, safe and continuous operation, simplified maintenance and long service life.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a highly integrated dual-redundant motor drive braking device, comprising a dual-redundant motor unit, an EMB controller, a brake caliper, and a chassis domain controller. The dual-redundant motor unit includes a first drive motor and a second drive motor, both independently packaged in the same housing and connected to independent transmission mechanisms. The EMB controller communicates with the dual-redundant motor unit, monitors the motor speed, torque, and temperature in real time, and controls the motor start / stop and power output. The brake caliper is connected to the dual-redundant motor unit through a transmission mechanism, converting motor power into braking clamping force. The chassis domain controller communicates with the EMB controller, receives braking commands, and coordinates the operation of the dual motors. Under normal operating conditions, the dual motors drive in tandem; in the event of a single motor failure, the other motor is activated to ensure 50% braking effectiveness.

[0008] As a further embodiment of this utility model, the transmission mechanism includes a ball screw fixedly connected to one side of the brake caliper body. A fixed sleeve is threaded onto the surface of the ball screw. The transmission mechanism adopts a ball screw structure with a transmission efficiency of 0.92, which can reduce energy loss during power transmission and ensure stable braking force output.

[0009] As a further embodiment of this utility model, a rotating gear is sleeved on the surface of the fixed sleeve, and two sets of transmission gears are meshed on the surface of the rotating gear. One side of each set of transmission gears is fixedly connected to the output end of the first drive motor and the second drive motor, respectively.

[0010] As a further embodiment of this utility model, the housings of the first drive motor and the second drive motor are made of aluminum alloy, and the interior of the housing is provided with independent heat dissipation channels; this can effectively avoid mutual interference when the motors are working and improve heat dissipation efficiency.

[0011] As a further embodiment of this invention, the EMB controller has a built-in fault diagnosis module. When the motor temperature exceeds 120°C or the torque deviation is greater than 20%, an alarm is immediately triggered and a fault signal is sent to the chassis domain controller 4. This facilitates timely detection of motor abnormalities and ensures the safety of the braking system.

[0012] As a further embodiment of this invention, the chassis domain controller and the EMB controller communicate via a CANFD bus with a data transmission rate of 8Mbps; this ensures efficient and accurate transmission of braking commands and motor status information, thereby improving system response speed.

[0013] (III) Beneficial Effects

[0014] This utility model provides a highly integrated dual-redundant motor drive braking device, which has the following beneficial effects:

[0015] This highly integrated dual-redundant motor drive braking device, through the configuration of dual-redundant motor units, EMB controller, brake caliper, and chassis domain controller, has the following advantages:

[0016] 1. High redundancy and reliability: The dual motors are independently packaged and equipped with independent transmission mechanisms. In the event of a single motor failure, the other motor immediately takes over, ensuring 50% braking effect and eliminating the failure risk of traditional single-motor braking systems.

[0017] II. Response and Efficiency Optimization: The CANFD bus (8Mbps) is used to achieve high-speed command transmission. The ball screw transmission mechanism has an efficiency of 0.92, and the braking force output is more timely and stable, improving the response speed by 40% compared with traditional hydraulic transmission.

[0018] 3. Precise fault monitoring: The EMB controller has a built-in fault diagnosis module that can monitor motor temperature and torque deviation in real time (an alarm will be triggered if the deviation exceeds 120° or is greater than 20%), which is more than 0.5 seconds earlier than traditional systems.

[0019] IV. Improved Maintenance Convenience: Fault records can directly locate the problematic motor, and the independent packaging design facilitates individual replacement, reducing repair time to 1 / 3 of the traditional system. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the disassembled structure of this utility model. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the disassembled structure of this utility model. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the transmission mechanism of this utility model.

[0024] In the diagram: 1. Dual redundant motor unit; 101. First drive motor; 102. Second drive motor; 103. Housing; 2. EMB controller; 3. Brake caliper; 4. Chassis domain controller; 5. Transmission mechanism; 501. Ball screw; 502. Fixed sleeve; 8. Rotating gear; 9. Transmission gear. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] Please see Figures 1 to 4This utility model provides a technical solution: a highly integrated dual-redundant motor drive braking device, including a dual-redundant motor unit 1, an EMB controller 2, a brake caliper 3, and a chassis domain controller 4. The dual-redundant motor unit 1 includes a first drive motor 101 and a second drive motor 102, which are independently packaged in the same housing 103 and respectively connected to independent transmission mechanisms 5. The EMB controller 2 is communicatively connected to the dual-redundant motor unit 1, monitors the motor speed, torque, and temperature in real time, and controls the motor start / stop and power output. The brake caliper 3 is connected to the dual-redundant motor unit 1 through the transmission mechanism 5, and can convert the motor power into braking clamping force. The chassis domain controller 4 communicates with the EMB controller 2, receives braking commands, and coordinates the operation of the dual motors. Under normal operating conditions, the dual motors drive in coordination, and when one motor fails, the other motor is activated to ensure 50% braking effect.

[0027] The transmission mechanism 5 includes a ball screw 501 fixedly connected to one side of the brake caliper body 3. A fixed sleeve 502 is threadedly connected to the surface of the ball screw 501. The transmission mechanism 5 adopts a ball screw structure with a transmission efficiency of 0.92, which can reduce energy loss in the power transmission process and ensure stable braking force output.

[0028] A rotating gear 8 is fitted onto the surface of the fixed sleeve 502. Two sets of transmission gears 9 are meshed on the surface of the rotating gear 8. One side of each set of transmission gears 9 is fixedly connected to the output end of the first drive motor 101 and the second drive motor 102, respectively.

[0029] The housing 103 of the first drive motor 101 and the second drive motor 102 is made of aluminum alloy, and the interior of the housing 103 is provided with independent heat dissipation channels; this can effectively avoid mutual interference when the motors are working and improve heat dissipation efficiency.

[0030] The EMB controller 2 has a built-in fault diagnosis module. When the motor temperature exceeds 120°C or the torque deviation is greater than 20%, it immediately triggers an alarm and sends a fault signal to the chassis domain controller 4. This facilitates timely detection of motor abnormalities and ensures the safety of the braking system.

[0031] The chassis domain controller 4 and the EMB controller 2 communicate via a CANFD bus with a data transmission rate of 8Mbps, ensuring efficient and accurate transmission of braking commands and motor status information, and improving system response speed.

[0032] In this invention, the working steps of the device are as follows:

[0033] During braking, after receiving an external braking command, the chassis domain controller 4 transmits the command to the EMB controller 2 via the CANFD bus. The EMB controller 2 then controls the first drive motor 101 and the second drive motor 102 of the dual redundant motor unit 1 to start synchronously, outputting coordinated torque. This torque is transmitted to the brake caliper 3 via an independent transmission mechanism 5 (ball screw structure), converting it into braking force to achieve braking. Simultaneously, the EMB controller 2 monitors the parameters of the two motors in real time. Under normal operating conditions, the two motors dissipate heat through independent cooling channels to ensure stable operation. When the EMB controller 2 detects that the temperature of a motor exceeds 120°C or the torque deviation is greater than 20%, the fault diagnosis module immediately alarms and sends a fault signal to the chassis domain controller 4. The chassis domain controller 4 then cuts off the power to the faulty motor, activating only the normal motor. Its torque drives the brake caliper 3 via the corresponding transmission mechanism 104, ensuring 50% braking effect. After braking, the EMB controller 2 controls the motor to stop outputting power, and the brake caliper 3 releases its clamping force. If a fault occurred previously, maintenance personnel can locate the problematic motor through the fault record of the EMB controller 2, replace it, and restore the dual-motor coordinated working mode.

[0034] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0035] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A highly integrated dual-redundant motor drive braking device, comprising a dual-redundant motor unit (1), an EMB controller (2), a brake caliper (3), and a chassis domain controller (4), characterized in that: The dual redundant motor unit (1) includes a first drive motor (101) and a second drive motor (102), which are independently packaged in the same housing (103) and connected to independent transmission mechanisms (5) respectively. The EMB controller (2) is connected to the dual redundant motor unit (1) in communication, monitors the motor speed, torque and temperature in real time, and controls the motor start-stop and power output. The brake caliper (3) is connected to the dual redundant motor unit (1) through the transmission mechanism (5) and can convert the motor power into braking clamping force. The chassis domain controller (4) communicates with the EMB controller (2), receives braking commands and coordinates the work of the dual motors. Under normal working conditions, the dual motors drive together. When a single motor fails, the other motor is activated to ensure 50% braking effect.

2. The highly integrated dual-redundant motor drive braking device according to claim 1, characterized in that: The transmission mechanism (5) includes a ball screw (501) fixedly connected to one side of the brake caliper body (3), and a fixed sleeve (502) is threadedly connected to the surface of the ball screw (501).

3. The highly integrated dual-redundant motor drive braking device according to claim 2, characterized in that: The surface of the fixed sleeve (502) is fitted with a rotating gear (8), and the surface of the rotating gear (8) is meshed with two sets of transmission gears (9). One side of the two sets of transmission gears (9) is fixedly connected to the output end of the first drive motor (101) and the second drive motor (102).

4. The highly integrated dual-redundant motor drive braking device according to claim 1, characterized in that: The housings (103) of the first drive motor (101) and the second drive motor (102) are made of aluminum alloy, and the housings (103) have independent heat dissipation channels inside.

5. The highly integrated dual-redundant motor drive braking device according to claim 1, characterized in that: The EMB controller (2) has a built-in fault diagnosis module. When the motor temperature exceeds 120° or the torque deviation is greater than 20%, it immediately triggers an alarm and sends a fault signal to the chassis domain controller (4).

6. The highly integrated dual-redundant motor drive braking device according to claim 1, characterized in that: The chassis domain controller (4) and the EMB controller (2) communicate via CANFD bus with a data transmission rate of 8Mbps.

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