Vehicle brake control system and vehicle

The push rod stroke sensor and controller connected to the brake pedal through the IPB component detect and send braking signals, solving the problem of high power consumption in the vehicle braking control system and achieving sensitive braking response and energy saving.

CN118753261BActive Publication Date: 2025-10-10CHERY AUTOMOBILE CO LTD
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Patent Information

Application Number
CN202411070751.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-08-06
Publication Date
2025-10-10
Estimated Expiration
2044-08-06

AI Technical Summary

Technical Problem

In existing vehicle brake control systems, the IPB component and the brake switch component need to remain powered on after the vehicle is powered on, resulting in high power consumption.

Method used

The IPB component is connected to the brake pedal, and the brake pedal stroke is detected by the push rod stroke sensor and the IPB controller, and a brake signal is sent to the controller to achieve brake control. When the IPB component fails, the brake switch component sends a backup signal to reduce power consumption.

Benefits of technology

After the vehicle is powered on, the IPB component completes the function of the brake switch component, reduces power consumption, ensures safety in the event of a fault, and improves the sensitivity of the brake response and energy saving effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present disclosure provides a vehicle brake control system and a vehicle, and belongs to the field of automobiles. The present disclosure provides a vehicle brake control system, wherein the IPB component in the vehicle brake system can not only brake the vehicle (i.e. control the brake pad brake), but also generate a brake signal, and then control other components based on the brake signal. After the vehicle is powered on, the function of the brake switch component can be completed by using the IPB component, and the brake switch component does not need to work, so that the power consumption of the vehicle can be reduced.
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Description

Technical Field

[0001] The present disclosure relates to the automotive field, and in particular to a vehicle braking control system and a vehicle. Background Art

[0002] To ensure the driving safety of a vehicle, a vehicle brake control system is usually installed on the vehicle. The vehicle brake control system includes an intelligent integrated power brake (IPB) component and a brake switch component.

[0003] The IPB component is used to brake the vehicle (i.e., control the brake pad braking), and the brake switch component is used to generate a brake signal. The brake signal is not used to brake the vehicle, but can be sent to other controllers to notify other controllers to perform operations. For example, it can be used to instruct the headlight controller to turn on the brake lights, etc.

[0004] When the vehicle is driving, the IPB component and the brake switch component need to be kept powered on continuously, which consumes a lot of electricity. Summary of the Invention

[0005] The embodiments of the present disclosure provide a vehicle braking control system and a vehicle, which can solve the technical problems existing in the related art. The technical solutions are as follows:

[0006] In a first aspect, an embodiment of the present disclosure provides a vehicle braking control system, which is applied to a vehicle and includes a brake pedal, an intelligent integrated brake (IPB) assembly, and a controller;

[0007] The IPB component is connected to the brake pedal and is electrically connected to the controller. The IPB component is configured to: detect a stroke of the brake pedal, perform brake control based on the stroke, and send a first brake signal to the controller when the stroke is greater than or equal to a first stroke threshold. The first brake signal is configured to indicate that a braking operation is currently being performed.

[0008] The controller is configured to control a designated component based on the first braking signal.

[0009] In one possible implementation, the IPB assembly includes a push rod, a push rod travel sensor, and an IPB controller;

[0010] The push rod is connected to the brake pedal;

[0011] The push rod stroke sensor is connected to the push rod;

[0012] The IPB controller is electrically connected to the push rod stroke sensor and the controller respectively;

[0013] The IPB controller is used to: obtain the stroke of the push rod, determine the stroke of the brake pedal based on the stroke of the push rod, and send a first braking signal to the controller when the stroke of the brake pedal is greater than or equal to the first stroke threshold.

[0014] In one possible implementation, the IPB controller is configured to:

[0015] The stroke of the push rod is obtained, and the stroke of the brake pedal is determined based on the stroke of the push rod and the proportional relationship between the stroke of the push rod and the stroke of the brake pedal. When the stroke of the brake pedal is greater than or equal to the first stroke threshold, a first braking signal is sent to the controller.

[0016] In one possible implementation, the vehicle brake control system further includes a brake switch assembly;

[0017] The brake switch assembly is connected to the brake pedal and is electrically connected to the controller;

[0018] The controller is further configured to: send an activation signal to the brake switch assembly when a fault in the IPB assembly is detected;

[0019] The brake switch assembly is configured to: after receiving an activation signal, perform a physical trigger when the travel of the brake pedal is greater than or equal to a second travel threshold, and under the physical trigger, send a second brake signal to the controller, wherein the second brake signal is used to indicate that a braking operation is currently being performed;

[0020] The controller is further configured to control a designated component based on the second braking signal.

[0021] In a possible implementation, the controller is further configured to:

[0022] When a fault of the IPB component is detected, a fault prompt is issued to the user via the display device of the vehicle.

[0023] In a possible implementation, the controller is further configured to: send a standby signal to the brake switch assembly when the vehicle enters a dormant state.

[0024] In a possible implementation, the controller is configured to:

[0025] When the first brake signal is received, a light control notification is sent to a light controller of the vehicle, where the light control notification is used to instruct the light controller to light up the brake light.

[0026] In a possible implementation, the controller is configured to:

[0027] When the first braking signal is received, a power limitation notification is sent to a power controller of the vehicle, where the power limitation notification is used to instruct the power controller to limit the output power of the power output component.

[0028] In a possible implementation manner, it is characterized in that the first travel threshold is smaller than the second travel threshold.

[0029] In a second aspect, an embodiment of the present disclosure provides a vehicle, comprising the vehicle braking control system of the first aspect and possible implementations thereof.

[0030] The present disclosure provides a vehicle brake control system. The IPB component in the vehicle brake system not only brakes the vehicle (i.e., controls the application of brake pads), but also generates a brake signal, which in turn controls other components based on the brake signal. After the vehicle is powered on, the IPB component can perform the functions of the brake switch component, eliminating the need for the brake switch component to operate, thereby reducing the vehicle's power consumption.

[0031] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0033] Figure 1 is a schematic diagram of a vehicle braking control system provided by an embodiment of the present disclosure;

[0034] Figure 2 is a schematic diagram of a vehicle braking control system provided by an embodiment of the present disclosure;

[0035] Figure 3 is a flow chart of a vehicle braking method provided by an embodiment of the present disclosure;

[0036] Figure 4 This is a flow chart of a vehicle braking method provided by an embodiment of the present disclosure.

[0037] Legend:

[0038] 1. Brake pedal;

[0039] 2. IPB components;

[0040] 21. Push rod; 22. Push rod stroke sensor; 23. IPB controller;

[0041] 3. Controller;

[0042] 4. Brake switch assembly. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0044] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present disclosure belongs. The terms "first", "second", "third" and similar words used in the patent disclosure specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "one" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Terms such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] Generally, a vehicle is equipped with an IPB assembly and a brake switch assembly. Both the IPB assembly and the brake switch assembly are connected to the brake plug plate. When the driver steps on the brake pedal, the IPB assembly can brake the vehicle based on the travel of the brake pedal. The brake switch assembly can send a brake signal to other controllers, such as the headlight controller and the power controller. After receiving the brake signal, the headlight controller can turn on the brake lights. After receiving the brake signal, the power controller can instruct the power system to stop providing power. The brake switch assembly has another function, that is, when the vehicle switches from a dormant state to a powered-on state, the brake signal sent by the brake switch assembly is required to wake up the various controllers on the vehicle. It is easy to know that after the vehicle is normally powered on, if the normal function of the vehicle is to be guaranteed, the IPB assembly and the brake switch assembly need to be in the powered-on state at all times, which consumes a lot of electricity.

[0046] The disclosed embodiments provide a vehicle braking control system in which the IPB assembly not only brakes the vehicle but also transmits braking signals to various other controllers. This eliminates the need for the brake switch assembly to operate after the vehicle is powered on, conserving energy. Alternatively, the brake switch assembly can serve as a backup for transmitting braking signals. In the event of an IPB assembly failure, the brake switch assembly can be used to transmit the braking signal, ensuring vehicle safety.

[0047] The embodiment of the present disclosure provides a vehicle braking control system, which can be applied to vehicles such as Figure 1 As shown, the vehicle brake control system includes a brake pedal 1, an IPB assembly 2 and a controller 3. The IPB assembly 2 is connected to the brake pedal 1 and is electrically connected to the controller 3.

[0048] The following is an introduction to each part of the vehicle braking control system.

[0049] 1. Brake pedal 1

[0050] The brake pedal 1 is a pedal for limiting the power of the vehicle, and is also called a foot brake. The driver can brake the vehicle by stepping on the brake pedal 1.

[0051] 2. IPB Component 2

[0052] The IPB assembly 2 includes a push rod 21, a push rod stroke sensor 22, and an IPB controller 23. The push rod 21 is connected to the brake pedal 1, the push rod stroke sensor 22 is connected to the push rod 21, and the IPB controller 23 is electrically connected to the push rod stroke sensor 22 and the controller 3 respectively.

[0053] When the brake pedal 1 moves, the push rod 21 is driven to move by the lever arm. The push rod stroke sensor 22 is connected to the push rod 21 and can detect the stroke of the push rod 21. Based on the positional relationship between the push rod 21 and the brake pedal 1, it is easy to know that the stroke of the brake pedal 1 and the stroke of the push rod 21 satisfy the stroke ratio relationship, which is S1:S2. Therefore, the push rod stroke sensor 22 can obtain the stroke of the brake pedal 1 by detecting the stroke of the push rod 21.

[0054] After the push rod travel sensor 22 detects the travel of the brake pedal 1, it can transmit this travel to the IPB controller 23. The IPB controller 23 then transmits a braking signal based on the travel of the brake pedal 1. A first travel threshold can be pre-set. When the travel of the brake pedal 1 is greater than or equal to the first travel threshold, the IPB controller 23 in the IPB assembly 2 transmits a braking signal to the controller 3. Setting the first travel threshold is to prevent changes in the brake pedal travel caused by special circumstances such as vehicle jitter. The first travel threshold can be set by relevant technical personnel and is not limited in the present embodiment. For example, the first switch travel threshold is 2 mm. The lower the first travel threshold, the faster the braking signal is transmitted when the travel of the brake pedal 1 changes. Relevant technical personnel can set the first travel threshold according to actual needs. The braking signal transmitted by the IPB controller 23 can control the vehicle's braking to decelerate, or it can be sent to the controllers of other designated components to indicate that a braking operation is currently in progress. The following examples illustrate the uses of the braking signal. For example, the braking signal can be used to illuminate the brake lights or to notify the vehicle to limit its power, etc., which are not limited in the present embodiment.

[0055] 3. Controller 3

[0056] The controller 3 may receive a braking signal sent by the IPB component or other components, and the braking signal may be transmitted to the controller 3 via a controller area network (CAN).

[0057] Below, some optional structural features of the vehicle brake control system are introduced:

[0058] like Figure 2 As shown, the vehicle brake control system may further include a brake switch assembly 4, which is connected to the brake pedal 1 and electrically connected to the controller 3. The brake switch assembly 4 and the IPB assembly 2 are connected to the brake pedal 1 separately, that is, in terms of physical structure, the two are independent and there is no intersection.

[0059] The brake switch assembly 4 can be a four-wire switch, and each two wires can form a loop, and the four-wire switch can form two loops. The four-wire switch can be composed of two electrical contactors and a top rod. When the brake pedal 1 moves, the top rod can be moved by the force arm. When the top rod moves to a certain extent, the state of the electrical contactor can be changed, so that the state of the two loops is changed. Through the positional relationship between the top rod and the brake pedal 1, it is easy to know that the stroke of the brake pedal 1 and the stroke of the top rod satisfy the stroke proportional relationship S3:S1. It is known that the stroke of the brake pedal 1 and the stroke of the push rod 21 in the IPB assembly 2 satisfy the stroke proportional relationship S2:S1, and thus the stroke of the top rod in the brake switch assembly and the stroke of the push rod in the IPB assembly also satisfy the proportional relationship S3:S2. The stroke proportional relationship can be used to calculate the stroke of the push rod 21 of the IPB assembly 2 when the first stroke threshold is less than the second stroke threshold, when the first stroke threshold is reached, based on the corresponding second stroke threshold of the brake switch assembly 4. When the push rod stroke sensor 22 detects that the stroke of the push rod reaches the stroke, a brake signal is sent.

[0060] When the stroke of the brake pedal 1 is greater than or equal to the second stroke threshold, a physical trigger is performed. The physical trigger can be an electrical signal, or it can also be triggered by infrared. Specifically, when the stroke of the brake pedal does not change, the top rod can block the infrared. When the brake pedal moves, the brake pedal drives the top rod to move. When the stroke of the brake pedal is greater than the stroke threshold, the top rod just moves out of the area that can block the infrared, and then the physical trigger is performed. Under the physical trigger, the brake switch assembly 4 sends a second brake signal to the controller 3. The second brake signal can be the same as the first brake signal, or it can be different from the first brake signal, which is not limited in the embodiments of the present disclosure. The second brake signal is used to inform other controllers that the current vehicle is braking. The second stroke threshold can be the same as the first stroke threshold, or it can be different. The embodiments of the present disclosure take the case where the second stroke threshold is greater than the first stroke threshold as an example, and other cases are similar and will not be repeated. For example, when the first stroke threshold is 2mm, and the second stroke threshold is 3mm. When the first stroke threshold is less than the second stroke threshold, when the brake stroke changes, the IPB assembly 2 sends the brake signal faster than the brake switch sends the brake signal, that is, the IPB assembly 2 sends the brake signal more sensitively.

[0061] The second stroke threshold is determined by the mechanical structure of brake switch assembly 4. When the brake pedal moves, it drives the brake pedal's connected components. Changing this requires changing the physical structure of brake switch assembly 4, which is difficult both technically and cost-effectively. Therefore, the second stroke threshold generally remains unchanged. The first stroke threshold can be set by technicians. The IPB assembly 2 includes a push rod stroke sensor 22, which detects the stroke of the push rod 21 connected to the brake pedal 1 and, therefore, the stroke of the brake pedal 1. When the stroke of the brake pedal 1 is greater than or equal to the first stroke threshold, a first brake signal is transmitted. The first stroke threshold is theoretically an arbitrary value within a certain range, so the first stroke threshold can be set to be less than the second stroke threshold.

[0062] The following describes how brake switch assembly 4 transmits the second brake signal. Brake switch assembly 4 transmits the brake signal via two independent circuits of a four-wire switch. This allows for verification of the brake signal, ensuring the reliability of the brake signal transmitted by brake switch assembly 4. These two circuits pass through identical components, connected in series: controller 3, the electrical contactors in brake switch assembly 4, and the battery. Brake switch assembly 4 transmits the brake signal via these two circuits, and the on / off states of these two circuits can be set to mutually exclusive, or to have some mutually exclusive and others simultaneously active. These two circuits are described separately below.

[0063] First, let's discuss the mutual exclusion of the two circuits. Specifically, when the travel of brake pedal 1 is less than a second travel threshold, the first circuit is connected and the second circuit is disconnected. When the travel of brake pedal 1 is greater than or equal to the second travel threshold, the first circuit is disconnected and the second circuit is connected. If either circuit is connected or disconnected simultaneously, it indicates an abnormality in the currently transmitted brake signal.

[0064] The following describes how two circuits are partially mutually exclusive and partially connected simultaneously. In addition to the second stroke threshold, an error stroke threshold can be set. When the travel of the brake pedal 1 is less than a third stroke threshold, the first circuit is connected and the second circuit is disconnected. The third stroke threshold is the difference between the second stroke threshold and the error stroke threshold. When the travel of the brake pedal 1 is between the third and fourth stroke thresholds, the second circuit is connected. The fourth stroke threshold is the sum of the second stroke threshold and the error stroke threshold. In other words, when the travel of the brake pedal 1 is less than the third stroke threshold, the first circuit is connected and the second circuit is connected. When the travel of the brake pedal 1 is greater than the third stroke threshold and less than the fourth stroke threshold, the first and second circuits are connected simultaneously. When the travel of the brake pedal 1 is greater than the fourth stroke threshold, the first circuit is disconnected and the second circuit is connected. The error stroke threshold can be set by relevant technicians and is not limited in this embodiment. For example, the error stroke threshold is 5 mm. If both circuits are disconnected simultaneously, it indicates that there is an abnormality in the currently transmitted brake signal.

[0065] The second travel threshold of brake switch assembly 4 is determined by the structure of brake switch assembly 4. The error travel threshold is also determined by the structure of brake switch assembly 4. The error travel threshold is set to prevent the situation where both signals are disconnected simultaneously when the brake pedal sends the second brake signal while the driver is depressing the brake pedal. If both signals are disconnected simultaneously, the controller cannot determine whether the brake switch assembly is currently operating normally. Therefore, the error travel threshold is set so that both signals are connected simultaneously when the brake pedal 1 is within a certain range.

[0066] In the embodiment of the present disclosure, based on Figure 1 and Figure 2 The vehicle braking control system shown in FIG. 1 provides a vehicle braking method. The processing flow of the method is as follows: Figure 3 As shown, the following steps are included:

[0067] Step 301: When the vehicle enters a dormant state, the controller sends a standby signal to the brake switch assembly.

[0068] When the vehicle is about to enter sleep mode, the brake switch assembly does not enter sleep mode after receiving a standby signal from the controller, that is, it remains powered on and active. When the vehicle enters sleep mode, the brake switch assembly receives a brake pedal signal and is physically triggered when the brake pedal travel exceeds a second travel threshold. Under physical triggering, it sends a second brake signal to the controller. The second brake signal indicates that the vehicle is currently braking. When the controller receives the second brake signal in sleep mode, it wakes up the controllers of various components on the vehicle, such as the lighting controller and the power controller.

[0069] Step 302: After the vehicle is powered on, the IPB component detects the travel of the brake pedal and performs brake control based on the travel of the brake pedal. When the detected travel of the brake pedal is greater than or equal to a first travel threshold, a first brake signal is sent to the controller, and the controller controls the brake switch component to power off.

[0070] The first travel threshold can be set lower than the second travel threshold. When the IPB assembly is intact and the brake pedal travel exceeds the first travel threshold, the IPB controller in the IPB assembly transmits a first brake signal, thereby controlling various brake-related controllers on the vehicle. When the IPB assembly fails and the brake pedal travel exceeds the second travel threshold, the brake switch assembly transmits a second brake signal, thereby controlling various controllers on the vehicle. However, the second travel threshold is generally fixed and does not change. Setting the first travel threshold lower than the second travel threshold can enhance sensitivity to brake pedal travel when using the brake signal transmitted by the IPB assembly for control. When the driver steps on the brake pedal, the IPB assembly transmits the first brake signal earlier than the brake switch assembly transmits the second brake signal. Consequently, when using the brake signal transmitted by the IPB assembly to control various controllers, the controllers receive the brake signal earlier than when using the brake switch assembly, resulting in a more sensitive vehicle response to the driver's application of the brake pedal.

[0071] The IPB assembly includes a pushrod, a pushrod travel sensor, and an IPB controller. The pushrod travel sensor detects the pushrod travel and sends it to the IPB controller. The IPB controller determines the brake pedal travel based on the pushrod travel and the ratio between the pushrod travel and the brake pedal travel. When the IPB controller detects that the brake pedal travel exceeds a first travel threshold, it sends a first braking signal to the controller.

[0072] When the controller detects that the vehicle is powered on normally, it can control the brake switch component to power off, thereby saving energy.

[0073] In step 303 , the controller controls a designated component based on the first braking signal.

[0074] The controller can control multiple designated braking-related components, such as the brake lights and powertrain. After receiving the first brake signal, the controller can send a lighting control notification to the lighting controller, instructing the lighting controller to illuminate the brake lights. Upon receiving the lighting control notification, the lighting controller illuminates the brake lights. After receiving the first brake signal, the controller can also send a power limit notification to the power controller, instructing the power controller to limit the output power of the power output component. Upon receiving the power limit notification, the power controller limits the output power of the power output component, thereby preventing the power controller from continuing to provide power even when the driver is braking by depressing the brake pedal. For example, in one scenario, if the vehicle's power is based solely on the driver's accelerator pressure while traveling uphill, the vehicle could potentially stall due to improper operation. Typically, the vehicle's power controller can determine the vehicle's current uphill status based on various sensors. If the driver's improper operation results in insufficient power for the uphill climb, the power controller can automatically increase the vehicle's power to prevent the vehicle from stalling. In this uphill scenario, when the driver depresses the brake pedal, the power controller needs to be notified to stop providing power to the vehicle. In addition, other components may also be controlled based on the first braking signal, which will not be described in detail in the embodiment of the present disclosure.

[0075] After the vehicle is powered on, when the driver depresses the brake pedal and exceeds a first travel threshold, the IPB component in the vehicle's braking system not only brakes the vehicle (i.e., controls the application of the brake pads), but also generates a brake signal, which in turn controls other components based on the brake signal. After the vehicle is powered on, the IPB component can perform the functions of the brake switch component, eliminating the need for the brake switch component to operate, thereby reducing the vehicle's power consumption.

[0076] Optionally, when the vehicle is powered on, the brake switch assembly may not be powered off, but may be put into a dormant state. When the IPB assembly fails, the brake switch assembly may be awakened, and then the designated component may be controlled based on the second brake signal sent by the brake switch assembly. The processing flow of this method is as follows: Figure 4 As shown, the following steps are included:

[0077] Step 401: When the vehicle enters a dormant state, the controller sends a standby signal to the brake switch assembly.

[0078] This step is similar to the above step 301. For an introduction to the relevant content, please refer to the description of step 301.

[0079] Step 402: After the vehicle is powered on, the IPB component detects the travel of the brake pedal and performs brake control based on the travel of the brake pedal. When the detected travel of the brake pedal is greater than or equal to the first travel threshold, a first brake signal is sent to the controller, and the brake switch component is controlled to be in a dormant state.

[0080] The IPB assembly includes a pushrod, a pushrod travel sensor, and an IPB controller. The pushrod travel sensor detects the pushrod travel and sends it to the IPB controller. The IPB controller determines the brake pedal travel based on the pushrod travel and the ratio between the pushrod travel and the brake pedal travel. When the IPB controller detects that the brake pedal travel exceeds a first travel threshold, it sends a first braking signal to the controller.

[0081] The controller can control the brake switch component to be in a dormant state. When the brake switch component is in the dormant state, the brake switch component will not be physically triggered and will not send the second brake signal.

[0082] In step 403 , the controller controls a designated component based on the first braking signal.

[0083] This step is similar to the above step 303. For an introduction to the relevant content, please refer to the description of step 303.

[0084] Step 404 : When the controller detects a fault in the IPB assembly, it sends an activation signal to the brake switch assembly.

[0085] The IPB controller in the IPB assembly can detect whether the IPB assembly has failed. When an IPB assembly fails, the IPB controller sends a fault notification to the controller. Upon receiving the fault notification, the controller sends an activation signal to the brake switch assembly. Upon receiving the activation signal, the brake switch assembly switches from a dormant state to a powered-on state. Furthermore, when the controller detects an IPB assembly failure, it can send an IPB assembly failure alert to the user via the vehicle's display. After receiving the IPB assembly failure alert, the user can park the vehicle on the side of the road and wait for assistance, etc., to ensure driving safety.

[0086] Step 405: When the travel of the brake pedal is greater than or equal to the second travel threshold, the brake switch assembly is physically triggered, and under the physical triggering, a second brake signal is sent to the controller.

[0087] The second brake signal has been introduced in detail in the above introduction of the brake switch assembly, and reference can be made to the above description.

[0088] In step 405 , the controller controls a designated component based on the second braking signal.

[0089] The process of the controller controlling the designated component based on the second braking signal is similar to the process of the controller controlling the designated component based on the first braking signal, and reference may be made to the description of step 303 above.

[0090] After the vehicle is powered on normally, when the brake signal sent by the IPB component is used to control various components on the vehicle, if the IPB component fails, the brake signal sent by the brake switch component can be used to continue to control various components on the vehicle, thereby ensuring the safety of the vehicle.

[0091] Optionally, when both the IPB component and the brake switch component are abnormal, the controller can send a power stop notification to the vehicle's power controller. After receiving the notification, the power controller stops providing power to ensure the vehicle's driving safety.

[0092] The above description is merely an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the scope of protection of the present disclosure.

Claims

1. A vehicle braking control system, characterized in that: The vehicle brake control system is applied to a vehicle, and comprises a brake pedal (1), an intelligent integrated brake IPB component (2), a controller (3) and a brake switch component (4); The IPB component (2) is connected to the brake pedal (1) and is electrically connected to the controller (3). The IPB component (2) is used to: detect the stroke of the brake pedal (1), perform brake control based on the stroke, and send a first brake signal to the controller (3) when the stroke is greater than or equal to a first stroke threshold. The first brake signal is used to indicate that a braking operation is currently being performed; The brake switch assembly (4) is connected to the brake pedal (1) and is electrically connected to the controller (3). The brake switch assembly (4) is a four-wire switch having two independent circuits. When the travel of the brake pedal (1) is less than a second travel threshold, the first circuit is connected and the second circuit is disconnected. When the travel of the brake pedal (1) is greater than or equal to the second travel threshold, the first circuit is disconnected and the second circuit is connected. The controller (3) is used to: control a designated component based on the first brake signal; and send an activation signal to the brake switch component (4) when a fault of the IPB component (2) is detected; The brake switch assembly (4) is used to: after receiving an activation signal, perform a physical trigger when the travel of the brake pedal (1) is greater than or equal to a second travel threshold value, and under the physical trigger, send a second brake signal to the controller (3) through two circuits, wherein the second brake signal is used to indicate that a braking operation is currently being performed; The controller (3) is further configured to control a designated component based on the second braking signal.

2. The vehicle braking control system according to claim 1, characterized in that: The IPB assembly (2) includes a push rod (21), a push rod stroke sensor (22), and an IPB controller (23); The push rod (21) is connected to the brake pedal (1); The push rod stroke sensor (22) is connected to the push rod (21); The IPB controller (23) is electrically connected to the push rod stroke sensor (22) and the controller (3) respectively; The IPB controller (23) is used to obtain the stroke of the push rod (21), determine the stroke of the brake pedal (1) based on the stroke of the push rod (21), and send a first braking signal to the controller (3) when the stroke of the brake pedal (1) is greater than or equal to the first stroke threshold.

3. The vehicle braking control system according to claim 2, characterized in that: The IPB controller (23) is used to: The stroke of the push rod (21) is obtained, and the stroke of the brake pedal (1) is determined based on the stroke of the push rod (21) and the proportional relationship between the stroke of the push rod (21) and the stroke of the brake pedal (1). When the stroke of the brake pedal (1) is greater than or equal to the first stroke threshold, a first braking signal is sent to the controller (3).

4. The vehicle braking control system according to claim 1, characterized in that: The controller (3) is further configured to: When a fault of the IPB component (2) is detected, a fault prompt is issued to the user via the display device of the vehicle.

5. The vehicle braking control system according to claim 1, characterized in that: The controller (3) is also used to send a standby signal to the brake switch assembly (4) when the vehicle enters a dormant state.

6. The vehicle braking control system according to claim 1, characterized in that: The controller (3) is used to: When the first brake signal is received, a light control notification is sent to a light controller of the vehicle, where the light control notification is used to instruct the light controller to light up the brake light.

7. The vehicle braking control system according to claim 1, characterized in that: The controller (3) is used to: When the first braking signal is received, a power limitation notification is sent to a power controller of the vehicle, where the power limitation notification is used to instruct the power controller to limit the output power of the power output component.

8. The vehicle braking control system according to any one of claims 1 to 7, characterized in that: The first travel threshold is smaller than the second travel threshold.

9. A vehicle, characterized in that: The vehicle includes the vehicle brake control system according to any one of claims 1 to 8.

Citation Information

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