EPB Caliper Durability Testing System

Abstract

This application discloses an EPB caliper durability testing system, which includes a hydraulic loading module, an industrial computer, an electronic control module, and a switching module. The hydraulic loading module is electrically connected to the EPB caliper. The industrial computer is electrically connected to the hydraulic loading module to control the hydraulic loading module to perform a driving hydraulic braking durability test on the EPB caliper. The electronic control module is electrically connected to the industrial computer. The switching module is electrically connected to the industrial computer, the electronic control module, and the EPB caliper. In a first control mode, the industrial computer is used to connect to the EPB caliper via the switching module to control the EPB caliper to perform a caliper braking durability test; in a second control mode, the electronic control module is used to connect to the EPB caliper via the switching module to control the EPB caliper to perform a caliper braking durability test. This design can perform driving hydraulic braking durability tests and / or caliper braking durability tests on EPB calipers, effectively improving the accuracy of the tests.

Description

Technical Field

[0001] This application relates to the field of durability testing equipment technology, and in particular to an EPB caliper durability testing system. Background Technology

[0002] EPB calipers are indispensable actuators in modern vehicle braking systems. Their braking reliability directly determines vehicle safety during use; therefore, durability testing of EPB calipers before installation is crucial. However, existing EPB caliper durability testing devices suffer from low accuracy due to their simple structure. Utility Model Content

[0003] This application provides an EPB caliper durability testing system that can solve the problem of low testing accuracy caused by the simple structure of EPB caliper durability testing devices in related technologies.

[0004] This application provides an EPB caliper durability testing system. The system includes a hydraulic loading module, an industrial computer, an electronic control module, and a switching module. The hydraulic loading module is electrically connected to the EPB caliper, and the industrial computer is electrically connected to the hydraulic loading module to control the hydraulic loading module to perform a driving hydraulic braking durability test on the EPB caliper. The electronic control module is electrically connected to the industrial computer, and the switching module is electrically connected to the industrial computer, the electronic control module, and the EPB caliper. In a first control mode, the industrial computer is electrically connected to the EPB caliper via the switching module to control the EPB caliper to perform a caliper braking durability test. In a second control mode, the electronic control module is electrically connected to the EPB caliper via the switching module to control the EPB caliper to perform a caliper braking durability test.

[0005] The EPB caliper durability testing system based on the embodiments of this application, by designing a hydraulic loading module, an industrial computer, an electronic control module, and a switching module, allows the EPB caliper to complete the driving hydraulic braking durability test through the cooperation of the industrial computer and the hydraulic loading module. The industrial computer, the electronic control module, and the switching module, in cooperation with each other, allow the EPB caliper to complete the caliper braking durability test in a first control mode, or to complete the caliper braking durability test in a second mode. This makes the test conditions closer to the various actual operating conditions of vehicles, and allows for comprehensive verification of the EPB caliper's durability from multiple angles and aspects simultaneously, effectively improving the accuracy of the test. Furthermore, it achieves multiple uses with a single machine, saving equipment development costs. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1 This is a schematic diagram of the structure of an EPB caliper durability testing system according to one embodiment of this application;

[0008] Figure 2 This is a schematic diagram of the EPB caliper durability testing system in the first control mode according to one embodiment of this application;

[0009] Figure 3 This is a schematic diagram of the EPB caliper durability testing system in the second control mode according to one embodiment of this application;

[0010] Figure 4 This is a schematic diagram of the structure of an EPB caliper durability testing system with multiple testing stations in one embodiment of this application.

[0011] Figure 5 This is a schematic diagram of the EPB caliper durability testing system with three testing stations in one embodiment of this application.

[0012] Reference numerals: 1. EPB caliper durability testing system; 1a. First test station; 1b. Second test station; 1c. Third test station; 10. Hydraulic loading module; 11. Hydraulic loading unit; 12. Hydraulic sensor; 20. Industrial computer; 20a. Terminal of industrial computer; 30. Electronic control module; 30a. Terminal of electronic control module; 40. Switching module; 41. Double-throw switch; 41a. Fixed terminal of double-throw switch; 41b. Movable terminal of double-throw switch; 50. Detection module; 51. Current sensor; 52. Pressure sensor; 60. Programmable power supply module; 70. Temperature control box; 80. Fixture; 2. EPB caliper. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0014] EPB calipers are indispensable actuators in modern vehicle braking systems. Their braking reliability directly determines vehicle safety during operation. Therefore, durability testing of EPB calipers before installation is crucial. However, existing EPB caliper durability testing devices, due to their simple structure, can only perform separate hydraulic braking durability tests or caliper braking durability tests, failing to achieve comprehensive durability testing that combines hydraulic braking durability testing and caliper braking durability testing. This results in lower test accuracy.

[0015] Please refer to Figure 1 As shown, in order to solve the above problems, this application proposes an EPB caliper durability testing system 1, which can perform vehicle hydraulic braking durability testing and / or caliper braking durability testing on EPB calipers 2, and can effectively improve the accuracy of the test.

[0016] The EPB caliper durability testing system 1 includes a hydraulic loading module 10, an industrial computer 20, an electronic control module 30, and a switching module 40. The hydraulic loading module 10 is electrically connected to the EPB caliper 2. The industrial computer 20 is electrically connected to the hydraulic loading module 10 to control the hydraulic loading module 10 to perform a driving hydraulic braking durability test on the EPB caliper 2. The electronic control module 30 is electrically connected to the industrial computer 20. The switching module 40 is electrically connected to the industrial computer 20, the electronic control module 30, and the EPB caliper 2. In a first control mode, the industrial computer 20 is electrically connected to the EPB caliper 2 via the switching module 40 to control the EPB caliper 2 to perform a caliper braking durability test; in a second control mode, the electronic control module 30 is electrically connected to the EPB caliper 2 via the switching module 40 to control the EPB caliper 2 to perform a caliper braking durability test.

[0017] The following combination Figures 1-5 The specific structure of the EPB caliper durability testing system 1 will be described in detail.

[0018] like Figure 1 As shown, the EPB caliper durability testing system 1 includes a hydraulic loading module 10, an industrial computer 20, an electronic control module 30, and a switching module 40.

[0019] The hydraulic loading module 10 serves as the actuator in the EPB caliper durability testing system 1 for performing driving hydraulic braking durability tests on the EPB caliper 2. The hydraulic loading module 10 is electrically connected to the EPB caliper 2 to simulate the brake fluid pressure generated when the brake pedal is pressed in a real vehicle. The specific structure of the hydraulic loading module 10 will be described in detail below.

[0020] The industrial control computer 20 is one of the control modules in the EPB caliper durability testing system 1. The industrial control computer 20 is electrically connected to the hydraulic loading module 10 to send hydraulic test signals to the hydraulic loading module 10. The hydraulic loading module 10 then controls the EPB caliper 2 to perform a driving hydraulic braking durability test according to the hydraulic test signals.

[0021] The electronic control module 30, as another control module in the EPB caliper durability testing system 1, is hardware-independent from the industrial computer 20. The electronic control module 30 is electrically connected to the industrial computer 20 to receive caliper test signals sent from the industrial computer 20 (described below). The electronic control module 30 includes an ECU (Electronic Control Unit), which is electrically connected to the EPB caliper 2.

[0022] like Figure 1 As shown, the switching module 40 serves as the switching mechanism in the EPB caliper durability test system 1. On the one hand, it is used to switch the circuit between the industrial control computer 20 and the EPB caliper 2, and on the other hand, it is used to switch the circuit between the electronic control module 30 and the EPB caliper 2. The specific structure of the switching module 40 will be described in detail below.

[0023] In the first control mode, the industrial computer 20 is electrically connected to the EPB caliper 2 via the switching module 40. At this time, the circuit between the industrial computer 20 and the EPB caliper 2 is open, while the circuit between the electronic control module 30 and the EPB caliper 2 is closed. The industrial computer 20 controls the EPB caliper 2 to perform a caliper braking durability test based on the caliper test signal. In the second control mode, the electronic control module 30 is electrically connected to the EPB caliper 2 via the switching module 40. At this time, the circuit between the electronic control module 30 and the EPB caliper 2 is open, while the circuit between the industrial computer 20 and the EPB caliper 2 is closed. The industrial computer 20 sends a caliper test signal to the electronic control module 30, which then controls the EPB caliper 2 to perform a caliper braking durability test based on the received caliper test signal.

[0024] It should be noted that the caliper brake durability test includes both the service caliper brake durability test and the parking caliper brake durability test. The EPB caliper durability testing system 1 in this application is suitable for performing service hydraulic brake durability tests on the EPB caliper 2 alone, as well as for performing caliper brake durability tests on the EPB caliper 2 alone, and also for performing comprehensive durability tests combining service hydraulic brake durability tests and caliper brake durability tests. Furthermore, for the caliper brake durability test, the first control mode, where the industrial control computer 20 is electrically connected to the EPB caliper 2, can be selected to perform the caliper brake durability test on the EPB caliper 2; alternatively, the second control mode, where the electronic control module 30 is electrically connected to the EPB caliper 2, can be selected to perform the caliper brake durability test on the EPB caliper 2.

[0025] Based on the EPB caliper durability testing system 1 in this application embodiment, by designing a hydraulic loading module 10, an industrial control computer 20, an electronic control module 30, and a switching module 40, the industrial control computer 20 and the hydraulic loading module 10 cooperate to enable the EPB caliper 2 to complete the driving hydraulic braking durability test. The industrial control computer 20, the electronic control module 30, and the switching module 40 cooperate to enable the EPB caliper 2 to complete the caliper braking durability test in the first control mode, or to complete the caliper braking durability test in the second mode. This makes the test conditions closer to the various working conditions of actual vehicle use, and can fully verify the durability of the EPB caliper 2 from multiple angles and aspects at the same time, which can effectively improve the accuracy of the test. In addition, it realizes multiple uses of one machine and saves equipment development costs.

[0026] like Figures 2-3 As shown, the switching module 40 includes a double-throw switch 41, the fixed terminal 41a of which is electrically connected to the EPB clamp 2; in the first control mode, the movable terminal 41b of the double-throw switch 41 is electrically connected to the terminal 20a of the industrial computer 20; in the second control mode, the movable terminal 41b of the double-throw switch 41 is electrically connected to the terminal 30a of the electronic control module 30.

[0027] It should be noted that when the movable terminal 41b of the double-throw switch 41 is electrically connected to the terminal 20a of the industrial control computer 20, the circuit between the industrial control computer 20 and the EPB caliper 2 is connected through the double-throw switch 41. The industrial control computer 20 can control the EPB caliper 2 to perform caliper braking durability testing according to the caliper test signal. When the movable terminal 41b of the double-throw switch 41 is electrically connected to the terminal 30a of the electronic control module 30, the circuit between the electronic control module 30 and the EPB caliper 2 is connected through the double-throw switch 41. The industrial control computer 20 sends a caliper test signal to the electronic control module 30, and the electronic control module 30 controls the EPB caliper 2 to perform caliper braking durability testing according to the received caliper test signal.

[0028] By designing a double-throw switch 41, the double-throw switch 41 is used to connect the circuit between the industrial computer 20 and the EPB caliper 2 in the first control mode, so that the industrial computer 20 can perform an effective caliper braking durability test on the EPB caliper 2 according to the caliper test signal; by designing a double-throw switch 41, the double-throw switch 41 is used to connect the circuit between the electronic control module 30 and the EPB caliper 2 in the second control mode, so that the electronic control module 30 can perform an effective caliper braking durability test on the EPB caliper 2 according to the received caliper test signal.

[0029] Of course, in other embodiments, the switching module 40 may also include a first relay (not shown in the figure) and a second relay (not shown in the figure). The first relay is electrically connected to the industrial control computer 20 and the EPB caliper 2, and the second relay is electrically connected to the electronic control module 30 and the EPB caliper 2. In the first control mode, the first relay is in the on state and the second relay is in the off state. At this time, the circuit between the industrial control computer 20 and the EPB caliper 2 is connected through the first relay, and the industrial control computer 20 can control the EPB caliper 2 to perform caliper braking durability testing according to the caliper test signal. In the second control mode, the first relay is in the off state and the second relay is in the on state. At this time, the circuit between the electronic control module 30 and the EPB caliper 2 is connected through the second relay, and the industrial control computer 20 sends a caliper test signal to the electronic control module 30. The electronic control module 30 then controls the EPB caliper 2 to perform caliper braking durability testing according to the received caliper test signal. The first relay / second relay can be an electromagnetic relay or a solid-state relay.

[0030] like Figure 1 As shown, the EPB caliper durability testing system 1 also includes a detection module 50, which is electrically connected to the industrial control computer 20 and the EPB caliper 2. The detection module 50 is used to monitor the actual braking current and actual braking clamping force applied to the EPB caliper 2 during the caliper braking durability test.

[0031] The detection module 50 serves as a current monitoring mechanism in the EPB caliper durability test system 1, used to monitor the actual braking current applied to the EPB caliper 2 during the caliper braking durability test; the detection module 50 also serves as a clamping force monitoring mechanism in the EPB caliper durability test system 1, used to monitor the actual braking clamping force applied to the EPB caliper 2 during the caliper braking durability test.

[0032] Specifically, the detection module 50 includes a current sensor 51, which is electrically connected to the industrial control computer 20 and the EPB caliper 2. The current sensor 51 is used to monitor the actual braking current applied to the EPB caliper 2 during the caliper braking durability test. The industrial control computer 20 is used to compare the actual braking current with the target braking current, and when the actual braking current is not equal to the target braking current, it controls the EPB caliper 2 to perform the caliper braking durability test according to the target braking current. The specific value of the target braking current is not limited here; designers can design it reasonably according to actual needs. Similarly, the specific model of the current sensor 51 is not limited here; designers can choose it reasonably according to actual needs. By designing the current sensor 51, the industrial control computer 20 collects the actual braking current through the current sensor 51, and when the current sensor 51 detects that the actual braking current is not equal to the target braking current, it performs closed-loop control of the current through a hardware feedback circuit, thus realizing caliper braking durability testing controlled by the industrial control computer 20 with the target braking current.

[0033] Specifically, the detection module 50 also includes a pressure sensor 52, which is electrically connected to the industrial control computer 20 and the EPB caliper 2. The pressure sensor 52 is used to monitor the actual braking clamping force applied to the EPB caliper 2 during the caliper brake durability test. The industrial control computer 20 is used to compare the actual braking clamping force with the target braking clamping force, and when the actual braking clamping force is not equal to the target braking clamping force, it controls the EPB caliper 2 to perform the caliper brake durability test according to the target braking clamping force. The specific value of the target braking clamping force is not limited here; designers can design it reasonably according to actual needs. Similarly, the specific model of the pressure sensor 52 is not limited here; designers can choose it reasonably according to actual needs. By designing the pressure sensor 52, the industrial control computer 20 collects the actual braking clamping force through the pressure sensor 52, and when the pressure sensor 52 detects that the actual braking clamping force is not equal to the target braking clamping force, it performs closed-loop control of the clamping force through a hardware feedback circuit, thus realizing the caliper brake durability test controlled by the industrial control computer 20 with the target braking clamping force.

[0034] It should be noted that in the second control mode, the industrial computer 20 sends a caliper clamping signal to the electronic control module 30 and starts timing. The electronic control module 30 controls the EPB caliper 2 to perform clamping operations according to the caliper clamping signal. After the preset time is reached, the industrial computer 20 sends a caliper release signal to the electronic control module 30. The electronic control module 30 controls the EPB caliper 2 to perform a release operation according to the caliper release signal. The caliper test signal includes the caliper clamping signal and the caliper release signal. Specifically, the electronic control module 30 controls the current of the EPB caliper 2 (specifically the motor described below) according to the received caliper clamping signal, thereby causing the brake caliper of the EPB caliper 2 to clamp the brake disc. The EPB caliper 2 comprises an MGU (Motor Gear Unit) assembly and a caliper assembly. The MGU assembly, as the core drive mechanism of the EPB caliper 2, includes components such as a motor, planetary gears, and belts. The caliper assembly, as the clamping force actuator of the EPB caliper 2, includes components such as a brake caliper, a screw and sleeve, a piston, and a brake disc. The motor receives the caliper clamping signal sent by the electronic control module 30. After torque reduction and amplification through the planetary gears, it drives the screw and sleeve to move. The piston moves forward under the push of the screw and sleeve, causing the brake caliper to move towards the brake disc, thus achieving the clamping operation. The preset duration is the time interval between the caliper clamping signal and the caliper release signal sent by the industrial control computer 20. The preset duration can be designed according to actual needs and is not limited here. The electronic control module 30 controls the current of the EPB caliper 2 (specifically the motor described above) according to the received caliper release signal, thereby causing the brake caliper of the EPB caliper 2 to release the brake disc. Specifically, the motor is used to receive the caliper release signal sent by the electronic control module 30, drive the screw sleeve to move, and the piston moves backward under the push of the screw sleeve so that the brake caliper moves away from the brake disc, thereby realizing the release operation.

[0035] like Figure 1 As shown, the hydraulic loading module 10 includes a hydraulic loading unit 11, which is connected to the EPB caliper 2; the industrial control computer 20 is electrically connected to the hydraulic loading unit 11 to control the hydraulic loading unit 11 to perform a driving hydraulic braking durability test on the EPB caliper 2.

[0036] The hydraulic loading unit 11 serves as the hydraulic pressure actuation component of the hydraulic loading module 10. The hydraulic loading unit 11 includes components such as a brake pedal, a lever mechanism, and a brake master cylinder.

[0037] Furthermore, the hydraulic loading module 10 also includes a hydraulic sensor 12, which is electrically connected to the hydraulic loading unit 11 and the EPB caliper 2. The hydraulic sensor 12 is used to monitor the actual brake fluid pressure generated by the hydraulic loading unit 11 under the control of the industrial control computer 20. The industrial control computer 20 is used to compare the actual brake fluid pressure with the target brake fluid pressure, and when the actual brake fluid pressure is not equal to the target brake fluid pressure, it controls the EPB caliper 2 to perform a driving hydraulic brake durability test according to the target brake fluid pressure.

[0038] The hydraulic sensor 12, serving as the detection component of the hydraulic loading module 10, is used to monitor the actual brake fluid pressure applied to the EPB caliper 2 during the vehicle hydraulic brake durability test. The specific model of the hydraulic sensor 12 is not limited here; designers can choose appropriately based on actual needs. Similarly, the specific value of the target brake fluid pressure is not limited here; designers can design appropriately based on actual needs. When the industrial control computer 20 needs to apply hydraulic pressure to enable the hydraulic loading unit 11 to perform the vehicle hydraulic brake durability test on the EPB caliper 2, the industrial control computer 20 sends a hydraulic test signal to the hydraulic loading unit 11. The hydraulic loading unit 11 then performs the vehicle hydraulic brake durability test on the EPB caliper 2 according to the target brake fluid pressure based on the received hydraulic test signal. The process of generating the target brake fluid pressure is roughly as follows: The industrial control computer 20 sends a hydraulic test signal to the hydraulic loading unit 11, simulating the actual vehicle's foot pressing the brake pedal. The brake pedal transmits force to the master cylinder through a lever mechanism. The piston in the master cylinder is pushed, compressing the brake fluid and generating high pressure. The high-pressure brake fluid is transmitted to the brake wheel cylinders of each wheel through the brake lines. The piston in the brake wheel cylinder is pushed outward by the high-pressure brake fluid and presses the brake caliper to clamp the brake disc. The friction between the brake caliper and the brake disc generates the target brake fluid pressure, causing the wheel to decelerate or stop. The industrial control computer 20 collects the actual brake fluid pressure through the hydraulic sensor 12. When the hydraulic sensor 12 detects that the actual brake fluid pressure is not equal to the target brake fluid pressure, it performs closed-loop control of the hydraulic pressure through a hardware feedback circuit. This enables the industrial control computer 20 to control the target brake fluid pressure for vehicle hydraulic brake durability testing.

[0039] like Figure 1 As shown, the EPB caliper durability testing system 1 also includes a programmable power supply module 60, which is connected to the industrial computer 20 to control the current and voltage according to the test signals sent by the industrial computer 20 (such as the hydraulic test signal and the caliper test signal mentioned above).

[0040] like Figure 1As shown, the EPB caliper durability testing system 1 also includes a temperature control chamber 70 and a fixture 80. The fixture 80 is set inside the temperature control chamber 70 and is used to fix the EPB caliper 2. The industrial computer 20 is connected to the temperature control chamber 70 to control the temperature inside the temperature control chamber 70.

[0041] The temperature control chamber 70 serves as the temperature control mechanism of the EPB caliper durability testing system 1, providing the EPB caliper 2 with testing environments under different temperature conditions to more vividly simulate the vehicle's operating conditions. The industrial control computer 20 can adjust the temperature inside the temperature control chamber 70 according to actual needs, and can also monitor temperature changes inside the temperature control chamber 70 through temperature sensors.

[0042] The fixture 80 serves as the fixing mechanism for the EPB caliper durability testing system 1, used to fix the EPB caliper 2. Since the fixture 80 is not the focus of this invention, its specific structure will not be described in detail here. The specific connection method between the fixture 80 and the temperature control box 70 is not limited here; designers can design it reasonably according to actual needs. For example, the fixture 80 can be detachably connected to the temperature control box 70 by at least one of the following methods: screw connection, snap-fit ​​connection, or plug-in connection. Alternatively, the fixture 80 can also be non-detachably connected to the temperature control box 70 by riveting or welding, but not limited to this method.

[0043] like Figure 4 As shown, the EPB caliper durability testing system 1 has multiple test stations, each of which can be used to perform durability testing on an EPB caliper 2, and each test station includes a hydraulic loading module 10, an electronic control module 30 and a switching module 40.

[0044] It should be noted that at least one of the multiple test stations can be selected to perform durability testing on the EPB caliper 2, depending on actual needs. For example, such as... Figure 5As shown, taking the EPB caliper durability testing system 1 with three test stations as an example, the three test stations include the first test station 1a, the second test station 1b, and the third test station 1c. When only one EPB caliper 2 needs to be tested for durability, any one of the first test station 1a, the second test station 1b, and the third test station 1c can be selected to perform the durability test on the EPB caliper 2. When two EPB calipers 2 need to be tested for durability, any two of the first test stations 1a, the second test station 1b, and the third test station 1c can be selected to perform the durability test on the two EPB calipers 2 one-to-one. When three EPB calipers 2 need to be tested for durability, the first test station 1a, the second test station 1b, and the third test station 1c can be selected to perform the durability test on the three EPB calipers 2 one-to-one. By designing multiple test stations, multiple EPB calipers 2 can be tested for durability simultaneously, thus effectively improving testing efficiency. In addition, multiple test stations share the same industrial control computer 20, which reduces the overall cost of the EPB caliper durability test system 1.

[0045] When the EPB caliper durability testing system 1 has multiple test stations, each test station also includes one of the above-mentioned programmable power supplies. The multiple programmable power supplies in the multiple test stations are independent of each other, thus forming an independent power supply system.

[0046] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An EPB caliper durability testing system, characterized in that, include: A hydraulic loading module is used for electrical connection with the EPB caliper; An industrial control computer is electrically connected to the hydraulic loading module to control the hydraulic loading module to perform a driving hydraulic braking durability test on the EPB caliper. The electronic control module is connected to the industrial control electromechanical system; The switching module is electrically connected to the industrial computer, the electronic control module, and the EPB caliper. The industrial control computer is used in the first control mode to be electrically connected to the EPB caliper through the switching module to control the EPB caliper to perform caliper braking durability testing; the electronic control module is used in the second control mode to be electrically connected to the EPB caliper through the switching module to control the EPB caliper to perform caliper braking durability testing.

2. The EPB caliper durability testing system as described in claim 1, characterized in that, The switching module includes a double-throw switch, the fixed terminal of which is electrically connected to the EPB clamp; in the first control mode, the movable terminal of the double-throw switch is electrically connected to the terminal of the industrial computer. In the second control mode, the active terminal of the double-throw switch is electrically connected to the terminal of the electronic control module.

3. The EPB caliper durability testing system as described in claim 1, characterized in that, The EPB caliper durability testing system also includes a detection module, which is electrically connected to the industrial computer and the EPB caliper. The detection module is used to monitor the actual braking current and actual braking clamping force applied to the EPB caliper during the caliper braking durability test.

4. The EPB caliper durability testing system as described in claim 3, characterized in that, The detection module includes a current sensor, which is electrically connected to the industrial computer and the EPB caliper. The current sensor is used to monitor the actual braking current applied to the EPB caliper during the caliper braking durability test. The industrial computer is used to compare the actual braking current with the target braking current, and when the actual braking current is not equal to the target braking current, it controls the EPB caliper to perform the caliper braking durability test according to the target braking current.

5. The EPB caliper durability testing system as described in claim 4, characterized in that, The detection module also includes a pressure sensor, which is electrically connected to the industrial control computer and the EPB caliper. The pressure sensor is used to monitor the actual braking clamping force applied to the EPB caliper during the caliper brake durability test. The industrial control computer is used to compare the actual braking clamping force with the target braking clamping force, and when the actual braking clamping force is not equal to the target braking clamping force, it controls the EPB caliper to perform the caliper brake durability test according to the target braking clamping force.

6. The EPB caliper durability testing system as described in claim 1, characterized in that, The hydraulic loading module includes a hydraulic loading unit connected to the EPB caliper. The industrial control computer is electrically connected to the hydraulic loading unit to control the hydraulic loading unit to perform a driving hydraulic braking durability test on the EPB caliper.

7. The EPB caliper durability testing system as described in claim 6, characterized in that, The hydraulic loading module also includes a hydraulic sensor, which is electrically connected to the hydraulic loading unit and the EPB caliper. The hydraulic sensor is used to monitor the actual brake fluid pressure generated by the hydraulic loading unit under the control of the industrial control computer. The industrial control computer is used to compare the actual brake fluid pressure with the target brake fluid pressure, and when the actual brake fluid pressure is not equal to the target brake fluid pressure, it controls the EPB caliper to perform a driving hydraulic braking durability test according to the target brake fluid pressure.

8. The EPB caliper durability testing system as described in claim 1, characterized in that, The EPB caliper durability testing system has multiple test stations, each of which can be used to perform durability testing on one EPB caliper, and each test station includes a hydraulic loading module, an electronic control module, and a switching module.

9. The EPB caliper durability testing system as described in claim 1, characterized in that, The EPB caliper durability testing system also includes a programmable power supply module, which is communicatively connected to the industrial computer to control the current and voltage according to the test signals sent by the industrial computer.

10. The EPB caliper durability testing system as described in any one of claims 1-9, characterized in that, The EPB caliper durability testing system also includes a temperature control chamber and a fixture. The fixture is set inside the temperature control chamber and is used to fix the EPB caliper. The industrial control computer is communicatively connected to the temperature control chamber to control the temperature inside the temperature control chamber.

Images