Brake lamp driving device and system and vehicle

Abstract

The utility model provides a brake lamp driving device and system and a vehicle, and relates to the technical field of braking. The brake lamp driving device comprises a storage battery, a first driving circuit, a brake lamp assembly, a first brake unit and a second brake unit. The first driving circuit comprises a main driving circuit, a first braking branch and a second braking branch. On the basis, the first braking element is connected to the first braking branch in series and used for outputting a braking signal according to braking operation and communicating with the first braking branch. And the second braking element is connected to the second braking branch in series and is used for being controlled by the ESP controller to be communicated with the second braking branch, namely another corresponding power supply path under the condition that the ESP controller obtains the braking signal, so that the braking lamp assembly is further ensured to be lightened. Based on the above, a special BCM control does not need to be added, wiring is simplified, and the cost and the whole vehicle arrangement change amount are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of braking, in particular to an ESP brake light driving device, system and vehicle. BACKGROUND

[0002] According to the regulation requirement, the second set of device of the vehicle braking system in addition to the running brake, ensures that the vehicle can reach at least 1.5m / s 2 The deceleration. In the vehicle equipped with EPB (Electronic Parking Brake, electronic parking brake) system, this deceleration function is usually realized by the deceleration control of the ESP (Electronic Stability Program, electronic stability program) controller to realize parking brake. According to the regulation, it is required to light the brake light in the above process,

[0003] To prompt the rear vehicle and prevent rear-end collision.

[0004] The existing brake light control strategy is a redundancy mechanism including two brake paths. One of the brake paths is usually dependent on the BCM (Body Control Module, vehicle body control module) controller to receive the data signal change of the ESP to drive the lighting or extinguishing of the brake light. However, the inventor found through research that the old platform vehicle often uses a traditional mechanical parking structure, and the lighting of the brake light is directly controlled by the brake light switch on the brake pedal, and does not involve the BCM controller. Therefore, after upgrading to the EPB system, if the BCM controller is still used to receive signals to control the brake light, a brake light controller needs to be added to the old platform, which has the problems of complex wiring, large vehicle layout change and high cost. UTILITARY MODEL CONTENT

[0005] The purpose of the utility model includes providing a brake light driving device, system and vehicle, which realizes the lighting control of the brake light in the braking process at low cost and low change, thereby ensuring that the vehicle can effectively remind the rear vehicle during parking brake deceleration and improving the driving safety.

[0006] The embodiment of the utility model can be implemented as follows:

[0007] In a first aspect, the utility model provides a brake light driving device, comprising:

[0008] A storage battery;

[0009] A first driving circuit, the first driving circuit comprises a main driving circuit, a first brake branch and a second brake branch; wherein the main driving circuit is connected with the positive electrode and the negative electrode of the storage battery, the first brake branch and the second brake branch are parallel to each other, and both are connected in series with the main driving circuit;

[0010] Brake lamp assembly, which is connected in series with the main drive circuit;

[0011] The first braking element is connected in series in the first braking branch and is used to output a braking signal according to the braking operation and connect the first braking branch.

[0012] The second braking element is connected in series in the second braking branch and is used to connect the second braking branch under the control of the ESP controller when the ESP controller obtains a braking signal.

[0013] In an optional embodiment, the second braking element is a braking relay, which includes an electromagnetic part and a contact switch part. The contact switch part is connected in series in the second braking branch. The electromagnetic part is used to communicate with the ESP controller and, under the control of the ESP controller, activates or deactivates the contact switch part.

[0014] In an optional implementation, the second braking branch is connected in series with the first fuse.

[0015] In an optional implementation, a diode is connected in series in the first braking branch, and the diode is used to allow current to flow unidirectionally into the brake lamp assembly.

[0016] In an optional embodiment, the brake light assembly includes a high-mounted brake light, a left rear brake light, and a right rear brake light, and the control terminals of the high-mounted brake light, the left rear brake light, and the right rear brake light are connected to the main drive circuit.

[0017] Secondly, the present invention provides a brake light driving system, including an ESP controller and a brake light driving device as described in any of the foregoing embodiments, wherein the ESP controller is communicatively connected to a first braking element and to a second braking element.

[0018] In an optional embodiment, the brake light drive device further includes a second drive circuit, which is connected to the positive and negative terminals of the battery and is connected in parallel with the first drive circuit, and the ESP controller is connected in series with the second drive circuit.

[0019] In an optional implementation, the second drive circuit is connected in series with a second fuse.

[0020] In an optional embodiment, the brake light drive device further includes a main control circuit, which is connected to the positive and negative terminals of the battery, connected in series with the first drive circuit, and connected in series with the second drive circuit, and a third fuse is connected in series with the main control circuit.

[0021] Thirdly, this utility model provides a vehicle, including an ECU control system and a brake light drive system according to any of the foregoing embodiments, wherein the ECU control system is communicatively connected to a first braking element and an ESP controller.

[0022] The beneficial effects of the brake light driving device, system, and vehicle provided by this utility model embodiment include:

[0023] This utility model provides a brake light driving device, system, and vehicle. The brake light driving device includes a battery, a first driving circuit, a brake light assembly, a first braking unit, and a second braking unit. The first driving circuit includes a main driving circuit, a first braking branch, and a second braking branch. The main driving circuit connects to the positive and negative terminals of the battery. The first and second braking branches are connected in parallel and both are connected in series with the main driving circuit. The brake light assembly is connected in series with the main driving circuit. Based on the above, a first braking element is connected in series with the first braking branch to output a braking signal based on braking operation, thus connecting the first braking branch. In practical applications, when the driver performs a braking operation, the first braking element can quickly respond and output a braking signal, connecting the first braking branch, thus connecting one of the power supply paths and illuminating the brake light assembly. The second braking element is connected in series with the second braking branch, and when the ESP controller receives a braking signal, it is controlled by the ESP controller to connect the second braking branch, i.e., the corresponding other power supply path, further ensuring that the brake light assembly is illuminated. Based on the above setup, it is easy to understand that this application uses a second braking element as the actuator for switching one of the power supply paths on and off, thereby achieving direct power supply control of the brake lamp assembly. Therefore, in this application, there is no need to add a dedicated BCM control, simplifying wiring and reducing costs and vehicle layout modifications. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the brake lamp drive device provided in this embodiment;

[0026] Figure 2 This is a schematic diagram of the brake lamp drive system provided in this embodiment.

[0027] Icons: 1-Brake light drive system; 2-ECU control system; 10-Brake light drive device; 30-ESP controller; 100-Battery; 200-Main control circuit; 210-Third fuse; 300-First drive circuit; 310-Main drive circuit; 330-First brake branch; 331-Diode; 350-Second brake branch; 351-First fuse; 400-Second drive circuit; 410-Second fuse; 500-First braking element; 700-Second braking element; 900-Brake light assembly; 910-High-mounted brake light; 930-Left rear brake light; 950-Right rear brake light. Detailed Implementation

[0028] In related technologies, when upgrading old platform vehicles to EPB systems, the method of using a BCM controller to receive signals and control brake lights has problems such as complex wiring, large changes to the overall vehicle layout, and high costs.

[0029] To address the aforementioned issues, this application provides a brake light drive device, system, and vehicle that enables low-cost and minimal-modification control of brake light illumination during braking after upgrading older platform vehicles to an EPB system. This ensures that the vehicle effectively alerts following vehicles when decelerating under parking brake conditions, thereby improving driving safety.

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0035] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0036] The following describes in detail the overall structure, working principle, and technical effects of the brake light drive device 10, system, and vehicle provided by this utility model through embodiments and in conjunction with the accompanying drawings.

[0037] Please see Figure 1 The brake lamp drive device 10 provided by this utility model is applied in the field of braking technology. The brake lamp drive device 10 includes a battery 100, a first drive circuit 300, a brake lamp assembly 900, a first braking unit, and a second braking unit. The battery 100 provides the necessary power support. The first drive circuit 300 includes a main drive circuit 310, a first braking branch 330, and a second braking branch 350.

[0038] It should be noted that the main drive circuit 310 is connected to the positive and negative terminals of the battery 100. The first braking branch 330 and the second braking branch 350 are connected in parallel and both are connected in series with the main drive circuit 310. Furthermore, the brake lamp assembly 900 is connected in series with the main drive circuit 310. Based on this, the first drive circuit 300 provided in this application provides two power supply paths, ensuring the fault tolerance performance of the brake lamp drive device 10, so that the brake lamp assembly 900 can still be illuminated by the action of the other braking branch when one of the braking branches fails.

[0039] Based on the above, the first braking element 500 is connected in series with the first braking branch 330 to output a braking signal according to the braking operation, thus connecting the first braking branch 330. In practical scenarios, when the driver performs a braking operation, the first braking element 500 can quickly respond and output a braking signal, connecting the first braking branch 330, thereby connecting one of the power supply paths and illuminating the brake light assembly 900. It should be noted that the aforementioned braking operation can refer to the driver pulling the handbrake or pressing the brake pedal.

[0040] The second braking element 700 is connected in series with the second braking branch 350. When the ESP controller 30 receives a braking signal, it is controlled by the ESP controller 30 to connect the second braking branch 350, i.e., another power supply path, further ensuring the brake lamp assembly 900 is illuminated. Based on the above configuration, it is easy to understand that this application uses the second braking element 700 as the actuator for switching one of the power supply paths on and off, realizing direct power supply control of the brake lamp assembly 900. Therefore, in this application, there is no need to add a dedicated BCM controller, simplifying wiring and reducing costs and overall vehicle layout modifications.

[0041] In some alternative embodiments, the second braking element 700 is a brake relay. This brake relay includes an electromagnetic component and a contact switch component. The contact switch component is connected in series in the second braking branch 350. The electromagnetic component is used to communicate with the ESP controller 30 and, under the control of the ESP controller 30, engages or disengages the contact switch component.

[0042] This means that in a real-world scenario, when the ESP controller 30 issues a command, the electromagnetic unit quickly generates electromagnetic force, causing the contact switch to immediately engage or disengage, ensuring the timeliness and effectiveness of braking. Furthermore, it should be noted that the brake relay, through the electromagnetic unit controlling the contact switch, achieves control of the high-current circuit (second braking branch 350) from a low-voltage signal (from the ESP controller 30), providing excellent electrical isolation and reducing interference and safety hazards.

[0043] Please see again Figure 1 To protect the circuits and components in the second braking branch 350 from overcurrent or short-circuit damage, a first fuse 351 is connected in series with the second braking branch 350. Therefore, when the current exceeds a predetermined safety threshold, the fuse will automatically melt, cutting off the current path and preventing overheating or damage to the second braking element 700. Additionally, a diode 331 is connected in series with the first braking branch 330. The diode 331 allows current to flow unidirectionally into the brake lamp assembly 900, thereby preventing damage to the brake lamp assembly 900 due to reverse voltage and extending its service life.

[0044] To ensure that following vehicles can clearly see the braking signal from any angle, the brake light assembly 900 includes a high-mounted brake light 910, a left rear brake light 930, and a right rear brake light 950. Furthermore, the control terminals of the high-mounted brake light 910, the left rear brake light, and the right rear brake light 950 are connected to the main drive circuit 310. It is easy to understand that since the control terminals of all brake lights are connected to the first drive circuit 300, all brake lights will illuminate simultaneously when braking is performed, ensuring the consistency and timeliness of signal transmission.

[0045] Please see Figure 2 This application also provides a brake light control system, which includes an ESP controller 30 and the brake light drive device 10 in the aforementioned embodiments. Therefore, this brake light control system also has the advantages of simple wiring, minimal modification to the overall vehicle layout, and low cost. Furthermore, the ESP controller 30 is communicatively connected to the first braking element 500 and the second braking element 700, thereby achieving the beneficial effect of acquiring braking signals and controlling the second braking element 700 according to the braking signals.

[0046] In some embodiments, the brake light drive device 10 further includes a second drive circuit 400. The second drive circuit 400 connects the positive and negative terminals of the battery 100 and is connected in parallel with the first drive circuit 300. The ESP controller 30 is connected in series with the second drive circuit 400. Based on the above, even if described, the battery 100 can also be used to power the ESP controller 30 to improve the compactness and integration of the system.

[0047] Similarly, to protect the circuits and components in the second drive circuit 400 from overcurrent or short-circuit damage, a second fuse 410 is connected in series with the second drive circuit 400. Furthermore, to coordinate the operation of the first drive circuit 300 and the second drive circuit 400, the brake lamp drive device 10 also includes a main control circuit 200. The main control circuit 200 is connected to the positive and negative terminals of the battery 100, connected in series with the first drive circuit 300, and connected in series with the second drive circuit 400, thereby achieving centralized control of multiple branches. Accordingly, a third fuse 210 is connected in series with the main control circuit 200 to protect the main control circuit 200 and other connected circuits from overcurrent or short-circuit damage.

[0048] In addition, this application also provides a vehicle including an ECU (Electronic Control Unit) control system and the brake light drive system 1 in the aforementioned embodiments. This vehicle also has the advantages of simple wiring, minimal changes to the overall vehicle layout, and low cost, which will not be elaborated further here. Based on the above, the ECU control system 2 is communicatively connected to the first braking element 500 and the ESP controller 30, thereby ensuring that the driver's braking intention, i.e., the operation of the handbrake or brake pedal, can be responded to in various vehicle controls.

[0049] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A brake lamp driving device, characterized in that, include: Storage battery; A first drive circuit, comprising a main drive circuit, a first braking branch, and a second braking branch; wherein the main drive circuit is connected to the positive and negative terminals of the battery, and the first braking branch and the second braking branch are connected in parallel and in series with the main drive circuit. A brake lamp assembly, wherein the brake lamp assembly is connected in series with the main drive circuit; A first braking element is connected in series in the first braking branch and is used to output a braking signal according to the braking operation and connect the first braking branch. The second braking element is connected in series in the second braking branch and is used to connect the second braking branch under the control of the ESP controller when the ESP controller receives the braking signal.

2. The brake lamp driving device according to claim 1, characterized in that, The second braking element is a braking relay, which includes an electromagnetic part and a contact switch part. The contact switch part is connected in series in the second braking branch. The electromagnetic part is used to communicate with the ESP controller and, under the control of the ESP controller, engages or disengages the contact switch part.

3. The brake lamp driving device according to claim 1, characterized in that, The second braking branch is connected in series with the first fuse.

4. The brake lamp driving device according to claim 1, characterized in that, The first braking branch is connected in series with a diode, which is used to allow current to flow unidirectionally into the brake lamp assembly.

5. The brake lamp driving device according to any one of claims 1 to 4, characterized in that, The brake light assembly includes a high-mounted brake light, a left rear brake light, and a right rear brake light, and the control terminals of the high-mounted brake light, the left rear brake light, and the right rear brake light are connected to the main drive circuit.

6. A brake lamp driving system, characterized in that, It includes an ESP controller and a brake light drive device as described in any one of claims 1 to 5, wherein the ESP controller is communicatively connected to the first braking element and to the second braking element.

7. The brake lamp drive system according to claim 6, characterized in that, The brake light drive device further includes a second drive circuit, which is connected to the positive and negative terminals of the battery and is connected in parallel with the first drive circuit. The ESP controller is connected in series with the second drive circuit.

8. The brake lamp drive system according to claim 7, characterized in that, The second drive circuit is connected in series with a second fuse.

9. The brake lamp drive system according to claim 7 or 8, characterized in that, The brake light drive device also includes a main control circuit, which is connected to the positive and negative terminals of the battery, connected in series with the first drive circuit, and connected in series with the second drive circuit. A third fuse is connected in series with the main control circuit.

10. A vehicle, characterized in that, It includes an ECU control system and a brake light drive system as described in any one of claims 6 to 9, wherein the ECU control system is communicatively connected to the first braking element and the ESP controller.

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