An electric vehicle backup auxiliary braking device and system

Abstract

The application provides an electric vehicle backup auxiliary braking device and system, and relates to the technical field of braking systems.The device comprises a brake disc, a brake caliper, a brake bottom plate and a connecting shaft, the brake disc is installed on the connecting shaft, the brake caliper is installed on the brake bottom plate and brakes the brake disc, and the device further comprises a first driving mechanism, a first turbine and a second turbine, the first turbine is connected with the connecting shaft, the second turbine is rotatably and slidably installed on the connecting shaft, and the second turbine can be driven by the first driving mechanism and rotates in the direction opposite to the rotating direction of the first turbine; the backup braking effect can be achieved by the coupling effect between the two turbines through reverse rotation in the case that the temperature of the brake disc is high, and the danger of braking failure caused by high temperature of the brake disc can be avoided.

Description

Technical Field

[0001] This invention relates to the technical field of braking systems, and more particularly to a backup auxiliary braking device and system for electric vehicles. Background Technology

[0002] With the deployment of new energy vehicle policies, the development of new energy vehicles is intensifying, and more and more car brands are joining the new energy vehicle market. The most important component in current new energy vehicles is the battery, which accounts for more than half of the overall price of the vehicle and is an indispensable part of new energy vehicles. However, the battery in new energy vehicles is also relatively heavy. Compared with traditional fuel vehicles of the same class, new energy vehicles have a relatively low center of gravity and are relatively heavy. Therefore, the inertia of new energy vehicles is relatively strong compared with traditional fuel vehicles. As a result, conventional braking is no longer sufficient to meet the braking effect of new energy vehicles.

[0003] During braking, new energy vehicles are prone to nose-diving due to their greater weight, and the brake discs heat up relatively quickly. Prolonged driving may cause a significant decrease in braking force due to high brake temperature. Therefore, the braking system of new energy vehicles needs to be further strengthened.

[0004] To ensure the safety of new energy vehicles, a single backup auxiliary braking device is proposed to address this issue. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an electric vehicle backup auxiliary braking device and system to avoid the problem of a significant decrease in braking force caused by high temperature, which affects vehicle safety.

[0006] Based on the technical problems existing in the background art, the present invention proposes a backup auxiliary braking device for electric vehicles, including a brake disc, a brake caliper, a brake base plate and a connecting shaft mounted on the steering knuckle. The brake disc is mounted on the connecting shaft, and the brake caliper is mounted on the brake base plate and brakes the brake disc. The device also includes a drive mechanism, a first turbine and a second turbine. The first turbine is connected to the connecting shaft, and the second turbine is rotatably mounted on the connecting shaft. The second turbine can be driven by the drive mechanism to rotate in the opposite direction to the rotation direction of the first turbine.

[0007] Furthermore, the device also includes a disc body, which is mounted on the side of the brake backplate away from the brake disc. The disc body is provided with a first cavity and a second cavity, which are in communication with each other. A first turbine is rotatably mounted on the disc body and located in the first cavity, and a second turbine is rotatably mounted on the disc body and located in the second cavity.

[0008] Furthermore, the first turbine and the second turbine are coaxial.

[0009] Furthermore, a circular groove is formed inside the first turbine, and the diameter of the second turbine is slightly smaller than the diameter of the circular groove. The second turbine can move into the circular groove of the first turbine on the second cavity.

[0010] Furthermore, the blades of the first turbine face the second turbine, and the blades of the second turbine face away from the first turbine.

[0011] Furthermore, the thickness of the first cavity is the same as the thickness of the first turbine, the thickness of the second cavity is the same as the thickness of the second turbine, and the thickness of the first turbine and the second turbine are the same.

[0012] Furthermore, the device also includes a second drive mechanism, which is mounted on the disc and can drive the second turbine to move along the axis of the connecting shaft.

[0013] Furthermore, liquid was injected into the disc.

[0014] An electric vehicle backup auxiliary braking system includes a speed controller, a main controller, a temperature sensor, and a speed sensor. The temperature sensor is mounted on the brake backing plate and monitors the temperature of the brake disc. The speed sensor is mounted on the brake backing plate and monitors the speed of the brake disc. The second drive mechanism, the temperature controller, the speed sensor, and the speed controller are all signal-connected to the main controller. The first drive mechanism is signal-connected to the speed controller.

[0015] Furthermore, the temperature sensor can detect the temperature of the brake disc. When the brake disc temperature is high, the main controller drives the second drive mechanism to operate and drives the second turbine to move towards the first turbine. At the same time, the main controller issues a command to make the speed sensor drive the second turbine to rotate in the opposite direction relative to the brake disc.

[0016] Compared with the prior art, the electric vehicle backup auxiliary braking device and system proposed in this invention adopts the above-mentioned technical solution and achieves the following technical effects:

[0017] This invention can achieve a backup braking effect by reversing the two turbines through the coupling effect between them when the brake disc temperature is high, thus avoiding the danger of brake failure caused by high brake disc temperature.

[0018] This invention can rationally distribute the braking force of the brake disc and the braking force brought by the two turbines by detecting the temperature state of the brake disc, so as to achieve the same braking effect. At the same time, it can reduce the braking force of the brake disc to reduce the temperature, prolong the duration of brake disc heat fade, and improve the braking reliability of the brake disc.

[0019] This invention can achieve kinetic energy recovery by using the coupling effect between two turbines when braking is not required. Attached Figure Description

[0020] Figure 1 This is a top view of the structure of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 3 This is a diagram of the internal structure of the disk body of the present invention;

[0023] Figure 4 This is a diagram of the first and second turbine transmission structure of the present invention;

[0024] Figure 5 This is a diagram of the disk structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the present invention.

[0026] In the diagram: 1. Brake disc; 2. Brake caliper; 3. Brake base plate; 4. Connecting shaft; 5. First drive mechanism; 6. First turbine; 7. Second turbine; 8. Disc body; 81. First circular cavity; 82. Second circular cavity; 61. Circular groove; 9. Second drive mechanism; 101. Speed ​​controller; 102. Main controller; 103. Temperature sensor; 104. Speed ​​sensor. Detailed Implementation

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. Example

[0029] Reference Figure 1-6This invention proposes a backup auxiliary braking device for electric vehicles, comprising a brake disc 1, a brake caliper 2, a brake base plate 3, and a connecting shaft 4 mounted on the steering knuckle. The brake disc 1 is mounted on the connecting shaft 4, and the brake caliper 2 is mounted on the brake base plate 3 and brakes the brake disc 1. It also includes a first drive mechanism 5, a first turbine 6, and a second turbine 7. The first turbine 6 is connected to the connecting shaft 4, and the second turbine 7 is rotatably and slidably mounted on the connecting shaft 4. The second turbine 7 can be driven by the first drive mechanism 5 to rotate in the opposite direction to the rotation of the first turbine 6. The rotation of the second turbine 7 can be driven by wind power or liquid transmission to rotate the first turbine 6. This invention uses high-efficiency liquid transmission, with liquid between the first turbine 6 and the second turbine 7. The wheel drives the brake disc to rotate clockwise, and the first drive mechanism 5 drives the second turbine 7 to rotate counterclockwise. The liquid prevents the first turbine 6 from rotating, thus achieving the braking effect.

[0030] In a specific embodiment, refer to Figure 4-5 The device also includes a disc body 8, which is mounted on the side of the brake backplate 3 away from the brake disc 1. The disc body 8 has a first circular cavity 81 and a second circular cavity 82, which communicate with each other. A first turbine 6 is rotatably mounted on the disc body 8 and located within the first circular cavity 81, and a second turbine 7 is rotatably mounted on the disc body 8 and located within the second circular cavity 82. The disc body 8 encloses the first turbine 6 and the second turbine 7. Liquid injected into the disc body 8 improves the efficiency of force transmission between the first turbine 6 and the second turbine 7.

[0031] In a specific embodiment, refer to Figure 3 When the turbines are coaxial, the transmission efficiency between the two turbines can be improved. The first turbine 6 and the second turbine 7 are coaxial.

[0032] The turbine drive involves opposing turbine fans between two turbines; however, in this invention, one turbine fan is located within the other for drive. This further reduces the space required for the turbine fans and also achieves a separation effect between the two turbine fans.

[0033] In a specific embodiment, refer to Figure 3-4 The first turbine 6 has a circular groove 61 inside, and the diameter of the second turbine 7 is slightly smaller than the diameter of the circular groove 61. The second turbine 7 can move into the circular groove 61 of the first turbine 6 from the second circular cavity 82. The turbine fan of the first turbine 6 extends from the outer circle to the inner circle, and the turbine fan of the second turbine 7 extends from the inner circle to the outer circle. The second turbine fan is located in the circular groove 61 of the first turbine fan. When the second turbine fan rotates, it drives the liquid to move and diffuse outward. At this time, the liquid is received on the turbine of the first turbine fan, thereby driving the first turbine fan to rotate. When the first turbine fan rotates clockwise, the second turbine fan can rotate counterclockwise, using the liquid to slow down the first turbine fan, thereby achieving a deceleration effect.

[0034] In this invention, the temperature and rotation speed of the brake disc 1 can also be detected by a detection device, and the braking force of the brake disc and the braking force of the auxiliary braking device can be reasonably combined to slow down the rate of brake disc heating and improve safety.

[0035] In a specific embodiment, refer to Figure 3-4 The blades of the first turbine 6 face the second turbine 7, and the blades of the second turbine 7 face away from the first turbine 6. When braking is not required, since the blades of the second turbine 7 face away from the first turbine 6, and the second turbine 7 is not inside the first turbine 6, the plane of the second turbine 7 faces the first turbine 6. In this case, the rotation of the second turbine 7 will not drive the rotation of the second turbine 7, thus increasing energy loss.

[0036] In a specific embodiment, refer to Figure 3 The thickness of the first circular cavity 81 is the same as the thickness of the first turbine 6, and the thickness of the second circular cavity 82 is the same as the thickness of the second turbine 7. The first turbine 6 and the second turbine 7 also have the same thickness. In this configuration, the transmission between the two turbines can reach an optimal state, avoiding wasted space due to the difference in thickness between the turbines.

[0037] In a specific embodiment, refer to Figure 1-2 The device also includes a second drive mechanism 9, which is mounted on the disc 8 and can drive the second turbine 7 to move along the axis of the connecting shaft 4. The second drive mechanism 9 can act as a clutch, so that when the second wheel is driven to move towards the first turbine 6, the longitudinal turbines can overlap, and force can be transmitted between the two turbines.

[0038] In a specific embodiment, refer to Figure 1 The disk body 8 is filled with liquid. The liquid can more effectively transmit the force between the two turbines.

[0039] refer to Figure 6 An electric vehicle backup auxiliary braking system includes a speed controller 101, a main controller 102, a temperature sensor 103, and a speed sensor 104. The temperature sensor 103 is mounted on the brake base plate 3 and monitors the temperature of the brake disc 1. The speed sensor 104 is mounted on the brake base plate 3 and monitors the speed of the brake disc 1. The second drive mechanism 9, the temperature sensor 103, the speed sensor 104, and the speed controller 101 are all connected to the main controller 102. The first drive mechanism 5 is connected to the speed controller 101.

[0040] In a specific embodiment, refer to Figure 6Temperature sensor 103 can detect the temperature of brake disc 1. When the temperature of brake disc 1 is high, main controller 102 drives second drive mechanism 9 to run and drives second turbine 7 to move towards first turbine 6. At the same time, main controller 102 issues a command to speed sensor 104 to drive second turbine 7 to rotate in the opposite direction relative to brake disc 1.

[0041] When the brake disc is at normal temperature, the main controller 102 can drive the second turbine 7 to rotate through the speed controller 101 to achieve the same braking effect as the brake disc. At this time, the braking force of the brake disc will be relatively reduced, thereby reducing the temperature rise of the brake disc and increasing the braking effect and reliability.

[0042] When the brake disc temperature is high or the braking force decreases significantly, the main controller 102 can increase the speed of the second turbine 7 through the speed controller 101, thereby slowing down the wheels by reversing the rotation and avoiding the danger caused by brake failure.

[0043] When the brake disc temperature is normal and there is no braking demand, the main controller 102 can drive the second drive mechanism 9 to make the second turbine 7 enter the circular groove 61 of the first turbine 6, so that the two turbines are coupled. At this time, the first drive mechanism 5 can play the role of generating electricity to achieve the effect of kinetic energy recovery.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A backup auxiliary braking device for an electric vehicle, comprising a brake disc (1), a brake caliper (2), a brake base plate (3), and a connecting shaft (4) mounted on the steering knuckle, wherein the brake disc (1) is mounted on the connecting shaft (4), and the brake caliper (2) is mounted on the brake base plate (3) and brakes the brake disc (1), characterized in that, The device also includes a first drive mechanism (5), a first turbine (6), and a second turbine (7). The first turbine (6) is connected to a connecting shaft (4), and the second turbine (7) is rotatably and slidably mounted on the connecting shaft (4). The second turbine (7) can be driven by the first drive mechanism (5) and rotate in the opposite direction to the rotation of the first turbine (6). The device also includes a disc body (8), which is mounted on the side of the brake base plate (3) away from the brake disc (1). The disc body (8) has a first circular cavity (81) and a second circular cavity (82) inside it, and the first circular cavity (81) and the second circular cavity (82) are connected. The first turbine (6) is rotatably mounted on the disc body (8) and located in the first circular cavity (81), and the second turbine (7) is rotatably mounted on the disc body (8) and located in the second circular cavity (82); a circular groove (61) is provided in the first turbine (6), and the diameter of the second turbine (7) is slightly smaller than the diameter of the circular groove (61). The second turbine (7) can move in the circular groove (61) of the first turbine (6) on the second circular cavity (82); the device also includes a second drive mechanism (9), which is mounted on the disc body (8) and can drive the second turbine (7) to move along the axis of the connecting shaft (4).

2. The electric vehicle backup auxiliary braking device according to claim 1, characterized in that, The first turbine (6) and the second turbine (7) are coaxial.

3. The electric vehicle backup auxiliary braking device according to claim 1, characterized in that, The blades of the first turbine (6) face the second turbine (7), and the blades of the second turbine (7) face away from the first turbine (6).

4. The electric vehicle backup auxiliary braking device according to claim 1, characterized in that, The thickness of the first circular cavity (81) is the same as the thickness of the first turbine (6), the thickness of the second circular cavity (82) is the same as the thickness of the second turbine (7), and the thicknesses of the first turbine (6) and the second turbine (7) are the same.

5. The electric vehicle backup auxiliary braking device according to claim 1, characterized in that, Liquid is injected into the disc (8).

6. An electric vehicle backup auxiliary braking system, comprising the electric vehicle backup auxiliary braking device according to any one of claims 1-5, characterized in that, The system also includes a speed controller (101), a main controller (102), a temperature sensor (103), and a speed sensor (104). The temperature sensor (103) is mounted on the brake base plate (3) and monitors the temperature of the brake disc (1) as described in any one of claims 1-5. The speed sensor (104) is mounted on the brake base plate (3) and monitors the speed of the brake disc (1). The second drive mechanism (9), the temperature sensor (103), the speed sensor (104), and the speed controller (101) are all connected to the main controller (102). The first drive mechanism (5) is connected to the speed controller (101).

7. The electric vehicle backup auxiliary braking system according to claim 6, characterized in that, The temperature sensor (103) can detect the temperature of the brake disc (1). When the temperature of the brake disc (1) is high, the main controller (102) drives the second drive mechanism (9) to run and drives the second turbine (7) to move towards the first turbine (6). At the same time, the main controller (102) issues a command to make the speed sensor (104) drive the second turbine (7) to rotate in the opposite direction relative to the brake disc (1).

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