Electronic parking controller (EPB) and automobile
By adopting a dual ECU structure in the electronic parking controller EPB, the synchronous release of electronic calipers on the left and right is solved, and the caliper movement inconsistent caused by the loss or invalidation of CAN signals in the prior art is solved, improving driving experience and safety.
Patent Information
- Application Number
- CN202420502354.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-03-14
AI Technical Summary
When the existing electronic parking controller (EPB) fails or loses the CAN signal, the electronic calipers on the left and right sides are inconsistent, affecting driving experience and safety.
An electronic parking controller EPB is designed, and the first ECU and the second ECU communicate with each other, and the left and right electronic calipers are respectively controlled. When the release command is received, the two ECUs synchronously control the caliper in the release state, ensuring that the synchronous release of the caliper can still be achieved when the signal is lost or invalid.
By synchronously controlling the release status of the electronic calipers on the left and right, the problem of inconsistent movement caused by loss or invalid signals along the way is avoided, and the driving experience and safety are improved.
Smart Images
Figure CN222832836U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile control and provides an electronic parking controller EPB and an automobile. Background Art
[0002] The handbrake is an indispensable braking system in daily driving. The handbrake and conventional hydraulic brake work in different stages of vehicle driving, thereby realizing vehicle deceleration, parking, parking and half-hill starting functions. At the same time, after the conventional brake fails, the handbrake, as an independent second braking system on the vehicle, can still play a braking role, improving the safety of vehicle driving.
[0003] With the development of technology, more and more cars are equipped with electronic brakes, namely electronic parking controllers (EPB). Electronic brakes have become a highlight of car promotion and one of the functions that car buyers attach great importance to. At present, the electronic parking controller (EPB) controls the caliper movements on the left and right sides respectively through two CAN signals. When one CAN signal fails or is lost, the calipers on the left and right sides will not move in the same way, affecting the driving experience and driving safety.
[0004] Application number 2019103683417, patent name: A dual-ECU structure EPB collaborative electronic caliper control method. The technical solution recorded in this patent cannot improve the above problems. Utility Model Content
[0005] The utility model provides an electronic parking controller EPB, aiming to improve the above problems.
[0006] The utility model is implemented as follows: an electronic parking controller EPB, the electronic parking controller EPB comprising:
[0007] A first ECU and a second ECU, the first ECU being communicatively connected with the second ECU;
[0008] The first ECU and the second ECU are used to control the left electronic caliper and the right electronic caliper respectively.
[0009] In some embodiments, when the first ECU or / and the second ECU receives a release instruction, the first ECU and the second ECU control the left electronic caliper and the right electronic caliper to be in a released state based on the release instruction.
[0010] The utility model is implemented in this way: a car, the car comprises the above-mentioned electronic parking controller EPB.
[0011] In some embodiments, the vehicle further comprises:
[0012] The vehicle controller VCU communicates with the first ECU and the second ECU via two CAN channels;
[0013] The vehicle controller VCU sends a release command to the first ECU and the second ECU simultaneously through two CAN channels.
[0014] In some embodiments, after the gear shift signal is detected, the gear shift signal is sent to the first ECU and the second ECU respectively through two CANs, and the first ECU and the second ECU simultaneously issue a release instruction.
[0015] In some embodiments, the vehicle further comprises:
[0016] An opening sensor provided on the accelerator pedal, which is communicatively connected with the first ECU and the second ECU;
[0017] After the accelerator pedal is detected to be depressed, the accelerator pedal depression signal is sent to the first ECU and the second ECU respectively through two CAN channels, and the first ECU and the second ECU send a release command at the same time.
[0018] When one release command is lost or invalid, the electronic parking controller EPB controls the left electronic caliper and the right electronic caliper to be in a released state based on the received effective release command, thereby ensuring the synchronous release of the left electronic caliper and the right electronic caliper. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 A schematic diagram of the structure of an electronic parking controller EPB provided in an embodiment of the utility model;
[0020] Figure 2 A schematic structural diagram of a car provided in an embodiment of the utility model. DETAILED DESCRIPTION
[0021] The specific implementation methods of the present utility model will be further explained in detail below by describing the optimal embodiments with reference to the accompanying drawings.
[0022] Figure 1 The schematic diagram of the structure of the electronic parking controller EPB provided in the embodiment of the utility model, for the convenience of description, only shows the part related to the embodiment of the utility model, the electronic parking controller EPB includes:
[0023] A first ECU and a second ECU, wherein the first ECU and the second ECU are connected via CAN communication;
[0024] The first ECU and the second ECU are used to control the left electronic caliper and the right electronic caliper to be released respectively;
[0025] When both the first ECU and the second ECU receive a release command, the first ECU and the second ECU control the left electronic caliper and the right electronic caliper to be in a released state based on the release command received by each ECU;
[0026] When one release command fails or is lost, only one ECU receives a valid release command, that is, the first ECU or the second ECU receives a valid release command. The first ECU and the second ECU control the left electronic caliper and the right electronic caliper to be in a released state based on the received valid release command, thereby avoiding the problem of inconsistent actions of the left electronic caliper and the right electronic caliper due to the loss or invalidity of one signal.
[0027] An embodiment of the utility model also provides a car, which is integrated with the above-mentioned electronic parking controller EPB. When one release instruction is lost or invalid, the electronic parking controller EPB controls the left electronic caliper and the right electronic caliper to be in a released state based on the received valid release instruction.
[0028] Figure 2 The structural schematic diagram of the automobile provided by the embodiment of the utility model only shows the parts related to the utility model for the convenience of description. The automobile also includes:
[0029] The vehicle controller VCU, the first ECU and the second ECU communicate with the vehicle controller VCU through two CAN channels;
[0030] The vehicle controller VCU sends a release command to the first ECU and the second ECU simultaneously through two CAN channels. When one release command fails or is lost, only one ECU receives a valid release command, that is, the first ECU or the second ECU receives a valid release command. The first ECU and the second ECU control the left electronic caliper and the right electronic caliper to be in a released state based on the received valid release command, avoiding the problem of inconsistent actions of the left electronic caliper and the right electronic caliper due to the loss or invalidity of one signal.
[0031] In another embodiment of the present invention, the vehicle further comprises:
[0032] After detecting the shift signal, the shift signal is sent to the first ECU and the second ECU respectively through two CAN channels. The first ECU and the second ECU issue a release command at the same time. When one release command fails or is lost, that is, the first ECU or the second ECU receives a valid release command, the first ECU and the second ECU control the left electronic caliper and the right electronic caliper to be in a released state based on the received valid release command, thereby avoiding the problem of inconsistent release actions of the left electronic caliper and the right electronic caliper due to the loss or invalidity of one signal.
[0033] In another embodiment of the present invention, the vehicle further comprises:
[0034] An opening sensor provided on the accelerator pedal, which is communicatively connected with the first ECU and the second ECU;
[0035] After detecting that the accelerator pedal is depressed, that is, the throttle opening detected by the opening sensor is greater than the set opening threshold, it is determined that the accelerator is depressed, and the accelerator pedal depression signal U is sent to the first ECU and the second ECU through two CANs respectively. The first ECU and the second ECU simultaneously issue a release command. When one release command fails or is lost, that is, the first ECU or the second ECU receives a valid release command, the first ECU and the second ECU control the left electronic caliper and the right electronic caliper to be in a released state based on the received valid release command, thereby avoiding the problem of inconsistent actions of the left electronic caliper and the right electronic caliper due to the loss or invalidity of one signal.
[0036] The utility model has been described exemplarily. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.
Claims
1. An electronic parking controller EPB, characterized in that: The electronic parking controller EPB comprises: A first ECU and a second ECU, the first ECU being communicatively connected with the second ECU; The first ECU and the second ECU are used to control the left electronic caliper and the right electronic caliper respectively; When the first ECU or / and the second ECU receives a release instruction, the first ECU and the second ECU control the left electronic caliper and the right electronic caliper to be in a released state based on the release instruction.
2. A car, characterized in that: The automobile comprises the electronic parking controller EPB as claimed in claim 1 .
3. The automobile according to claim 2, characterized in that: The automobile also includes: The vehicle controller VCU communicates with the first ECU and the second ECU via two CAN channels; The vehicle controller VCU sends a release command to the first ECU and the second ECU simultaneously through two CAN channels.
4. The automobile according to claim 2, characterized in that: After the gear shift signal is detected, the gear shift signal is sent to the first ECU and the second ECU respectively through two CANs, and the first ECU and the second ECU send a release command at the same time.
5. The automobile according to claim 2, characterized in that: The automobile also includes: An opening sensor provided on the accelerator pedal is communicatively connected with the first ECU and the second ECU; After the accelerator pedal is detected to be depressed, the accelerator pedal depression signal is sent to the first ECU and the second ECU respectively through two CAN channels, and the first ECU and the second ECU send a release command at the same time.