New energy pure electric vehicle dedicated electromagnetic brake assembly

Abstract

The application discloses a new energy pure electric vehicle special electromagnetic brake assembly, comprising an electromagnetic thrust device and a hydraulic oil pump, the electromagnetic thrust device comprises a main shell, the main shell inner cavity is divided into an upper and lower structure electric control chamber and a thrust chamber by a thrust chamber partition plate, a brake electric control board is installed in the electric control chamber, an electromagnetic thrust device is installed in the thrust chamber, the hydraulic oil pump comprises a sealed oil pump shell, the oil pump shell inner cavity is divided into an upper and lower structure oil storage chamber and main piston chamber by an oil pump chamber partition plate, an oil return hole and an oil inlet hole are sequentially arranged on the oil pump chamber partition plate, a main piston is installed in the main piston chamber to divide the piston chamber into a main oil chamber and an auxiliary oil chamber. Through the above mode, the application can realize the active and passive brake function by inputting an electric signal to generate electromagnetic force, and the seamless switching and high response characteristics between the brake modes, so that the new energy pure electric vehicle and the development of unmanned driving technology have a more safe and reliable electronic brake technology and product matched with simple structure.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, and in particular to an electromagnetic braking assembly specifically designed for new energy pure electric vehicles. Background Technology

[0002] Electric vehicles are vehicles powered by an onboard power source, using an electric motor to drive the wheels, and meeting all road traffic and safety regulations. Due to their relatively smaller environmental impact compared to traditional vehicles, their prospects are widely considered promising. The classic vacuum-assisted braking technology works by the driver applying force to the brake pedal. This force is amplified and converted into hydraulic pressure by the vacuum booster system, acting on the brakes to achieve braking. Modern automotive vacuum booster systems consist of a vacuum booster connected to the brake master cylinder, a vacuum tank, a vacuum pump, and vacuum tubing. The vacuum booster connected to the brake master cylinder utilizes the pressure difference between the vacuum and atmosphere to amplify the braking force applied by the driver to the pedal and transmit this force to the brake master cylinder, establishing hydraulic pressure and converting pedal force into hydraulic force. The brake fluid then transmits this pressure to the brakes, thus achieving braking. This system has the following drawbacks: First, it cannot achieve active braking because the current braking mechanism requires pedal force input, which is converted into hydraulic pressure before braking can be achieved. This pedal force input must be performed by the driver. Second, the current braking system has a slow response because it relies on brake fluid as the force transmission medium. The force applied to the pedal is transmitted to the brake via the master cylinder, resulting in low efficiency and numerous components involved in fluid pressure transmission, leading to a slow braking response. Third, the current braking system cannot achieve energy recovery because the braking principle relies on friction between the friction pads and the brake disc, and the energy generated by this friction cannot be recovered. Its application in new energy pure electric vehicles presents many safety hazards, unreliable performance, high power consumption, and high costs. If all new energy pure electric vehicles were to adopt the dedicated electromagnetic braking assembly described in this invention, the aforementioned problems and hazards would be fundamentally solved, and functional components would be reduced, costs lowered, and performance made safer and more reliable. Summary of the Invention

[0003] The purpose of this invention is to provide an electromagnetic braking assembly specifically for new energy pure electric vehicles, which can achieve seamless switching between active and passive braking functions and high response characteristics, so that autonomous driving technology can be matched with a safer and more reliable braking technology.

[0004] To solve the above-mentioned technical problems, one technical solution adopted by the present invention is: to provide an electromagnetic braking assembly specifically for new energy pure electric vehicles, including an electromagnetic thrust device and a hydraulic oil pump. The electromagnetic thrust device includes a main housing, and the inner cavity of the main housing is divided into an upper and lower structured electrical control chamber and a thrust chamber by a thrust chamber partition. A brake control board is installed in the electrical control chamber, and an electromagnetic thruster is installed in the thrust chamber. The hydraulic oil pump includes a sealed oil pump housing, and the inner cavity of the oil pump housing is divided by an oil pump chamber partition. The system comprises an oil reservoir chamber and a main piston chamber, which are divided into upper and lower sections. The oil pump chamber partition is provided with an oil return hole and an oil inlet hole in sequence. The main piston chamber is equipped with a main piston, which divides the piston chamber into a main oil chamber and an auxiliary oil chamber. An elastic element is provided between the main piston and the main oil chamber. The oil reservoir chamber circulates brake fluid with the main oil chamber and the auxiliary oil chamber through the oil return hole and the oil inlet hole. The lower part of the main oil chamber is provided with an interface that connects to the brake fluid pipe. The brake electronic control board receives the electrical signal generated by the brake pedal and sends it to the electromagnetic thruster, which drives the main piston to reciprocate in the main piston chamber.

[0005] Furthermore, the electromagnetic thruster includes an electromagnetic coil fixedly installed on the inner wall of the thrust chamber, a main shaft that can move horizontally is installed on the opposite side walls of the thrust chamber and both ends of the main shaft extend out of the side walls of the thrust chamber, a magnet is installed on the main shaft inside the thrust chamber, a gap is provided between the electromagnetic coil and the magnet, and one end face of the main shaft is connected to the inner side wall of the thrust chamber by an elastic element.

[0006] Furthermore, the oil storage chamber is equipped with a refueling cap.

[0007] Furthermore, the piston rod of the main piston extends out of the main piston chamber.

[0008] Furthermore, the gap between the oil return hole and the oil inlet hole on the oil pump chamber partition is greater than the thickness of the main piston. The rear end face of the main piston and the inner edge of the oil inlet hole are located on the same vertical plane. When the brake electronic control board does not receive the electrical signal generated by the brake pedal, the main piston chamber is connected to the oil reservoir.

[0009] Furthermore, the upper part of the main piston chamber is provided with an oil pressure sensor interface that communicates with the main piston chamber, and an oil pressure sensor is installed on the oil pressure sensor interface.

[0010] Furthermore, the main piston chamber has an inwardly oriented boss on one side wall of the piston rod, the piston rod passes through the boss and the side wall of the oil pump housing, and a sealing ring is provided between the piston rod, the side wall, and the boss.

[0011] Furthermore, the main housing and the oil pump housing are connected and fixed by a coupling gasket.

[0012] Furthermore, one side wall of the thrust chamber is provided with an inwardly oriented boss, through which the main shaft passes, and the main shaft is installed with the side wall and the boss via a sliding sleeve.

[0013] Furthermore, the axes of the main shaft and the piston rod are located on the same straight line, and the main shaft abuts against the piston rod.

[0014] The beneficial effects of this invention are as follows: The electromagnetic braking assembly specifically designed for new energy pure electric vehicles can improve the safety and reliability of these vehicles. It also simplifies their structure, effectively reducing costs. More importantly, the future development direction of new energy vehicles is the integration of autonomous driving technology. This invention's dedicated electromagnetic braking assembly can achieve seamless switching between active and passive braking and high response characteristics, providing a safer and more reliable braking technology to match autonomous driving. This is the application prospect and commercial potential of this invention, perfectly aligning with the development direction of contemporary new energy pure electric vehicles. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an electromagnetic braking assembly specifically for new energy pure electric vehicles according to the present invention;

[0017] Figure 2 This is a schematic diagram of the electromagnetic thrust device of an electromagnetic braking assembly for new energy pure electric vehicles according to the present invention.

[0018] 1. Electromagnetic thrust device; 2. Hydraulic oil pump; 3. Main housing; 4. Thrust chamber partition; 5. Electrical control room; 6. Thrust chamber; 7. Oil pump housing; 8. Coupling gasket; 9. Oil pump chamber partition; 10. Oil reservoir; 11. Main piston chamber; 12. Oil return hole; 13. Oil inlet hole; 14. Main piston; 15. Main oil chamber; 16. Auxiliary oil chamber; 17. Interface; 18. Filler cap; 19. Oil pressure sensor interface; 20. Electromagnetic coil; 21. Main shaft; 22. Magnet. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of the present invention shown in and described with reference to the drawings are merely exemplary, and the present invention is not limited to these embodiments.

[0020] It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the invention are shown in the accompanying drawings, while other details that are not closely related to the invention are omitted.

[0021] Furthermore, in the description of this invention, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] Please see Figures 1 to 2The present invention includes: an electromagnetic brake assembly for new energy pure electric vehicles, comprising an electromagnetic thrust device 1 and a hydraulic oil pump 2. The electromagnetic thrust device 1 includes a main housing 3. The inner cavity of the main housing 3 is divided into an upper and lower structured electrical control chamber 5 and a thrust chamber 6 by a thrust chamber partition 4. A brake control board is installed in the electrical control chamber 5. An electromagnetic thruster is installed in the thrust chamber 6. The hydraulic oil pump 2 includes a sealed oil pump housing 7. The main housing 3 and the oil pump housing 7 are connected and fixed by a connecting washer 8. The oil pump housing 7 is divided into an upper and lower oil storage chamber 10 and a main piston chamber 11 by an oil pump chamber partition 9. The oil pump chamber partition 9 is provided with an oil return hole 12 and an oil inlet hole 13 in sequence. The main piston chamber 11 is equipped with a main piston 14, which divides the piston chamber into a main oil chamber 15 and an auxiliary oil chamber 16. An elastic element is provided between the main piston 14 and the main oil chamber 15. The oil storage chamber 10 is connected to the main oil chamber 15 and the auxiliary oil chamber 16 through the oil return hole 12 and the oil inlet hole 13 to allow brake fluid to circulate. The lower part of the main oil chamber 15 is provided with an interface 17 that communicates with the brake fluid pipe. The oil storage chamber 10 is provided with a filler cap 18. The piston rod of the main piston 14 extends out of the main piston chamber 11. The gap between the return oil hole 12 and the inlet oil hole 13 on the oil pump chamber partition 9 is greater than the thickness of the main piston 14. The rear end face of the main piston 14 and the inner edge of the inlet oil hole 13 are located on the same vertical plane. When the brake control board does not receive the electrical signal generated by the brake pedal, the main piston chamber 11 is connected to the oil reservoir 10. The main piston chamber 11 has an inwardly oriented boss on one side wall of the piston rod. The piston rod passes through the boss and the side wall of the oil pump housing 7. A sealing ring is provided between the piston rod, the side wall, and the boss. The upper part of the main piston chamber 11 has an oil pressure sensor interface 19 that communicates with the main piston chamber 11. An oil pressure sensor is installed on the oil pressure sensor interface 19. The brake control board receives the electrical signal generated by the brake pedal and sends it to the electromagnetic thruster, which drives the main piston 14 to reciprocate in the main piston chamber 11.

[0023] The electromagnetic thruster includes an electromagnetic coil 20 fixedly mounted on the inner wall of the thrust chamber 6. A horizontally movable main shaft 21 is mounted on opposite side walls of the thrust chamber 6, with both ends of the main shaft 21 extending beyond the side walls. A magnet 22 is mounted on the main shaft 21 within the thrust chamber 6. A gap exists between the electromagnetic coil 20 and the magnet 22. One end face of the main shaft 20 is connected to the inner side wall of the thrust chamber 6 via an elastic element. One side wall of the thrust chamber 6 has an inwardly oriented boss through which the main shaft 21 passes. The main shaft 21 is mounted to the side wall and the boss via a sliding sleeve.

[0024] The axes of the main shaft 21 and the piston rod are on the same straight line, and the main shaft 21 abuts against the piston rod.

[0025] The elastic element is a spring.

[0026] The magnet 22 is a permanent magnet.

[0027] This invention discloses an electromagnetic brake assembly specifically designed for new energy pure electric vehicles. The electrical signal generated by the brake pedal is directly connected to the brake control board in the control room. The brake control board supplies a corresponding DC current to the electromagnetic coil based on the signal voltage level, generating a DC magnetic field within the coil. Under the influence of this DC magnetic field, a permanent magnet generates a corresponding thrust to drive the main shaft. The electromagnetic thruster utilizes the linear thrust generated by a voice coil motor to push the main piston of the hydraulic pump via the main shaft. The main piston moves under the thrust, blocking the upper oil inlet. As the main piston continues to move, hydraulic pressure is generated within the piston chamber. This hydraulic pressure, flowing through the brake fluid and brake line interface, is transmitted to the hydraulic brakes on the wheels, achieving the braking function.

[0028] Each wheel is equipped with an independent electromagnetic brake assembly. Therefore, the braking characteristics are safe and reliable.

[0029] The beneficial effects of this invention are as follows: The electromagnetic braking assembly specifically designed for new energy pure electric vehicles improves the safety and reliability of these vehicles, simplifies their structure, and effectively reduces costs. More importantly, the future development direction of new energy vehicles is the integration of autonomous driving technology. This invention's dedicated electromagnetic braking assembly enables seamless switching between active and passive braking with high response characteristics, providing a safer and more reliable braking technology to match autonomous driving. This demonstrates the application prospects and commercial potential of this invention, perfectly aligning with the development direction of contemporary new energy pure electric vehicles.

[0030] Furthermore, it should be noted that in this specification, "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electromagnetic braking assembly specifically for new energy pure electric vehicles, characterized in that... The system includes an electromagnetic thrust device and a hydraulic pump. The electromagnetic thrust device includes a main housing. The inner cavity of the main housing is divided into an upper and lower electrical control chamber and a thrust chamber by a thrust chamber partition. A brake control board is installed in the electrical control chamber, and an electromagnetic thruster is installed in the thrust chamber. The hydraulic pump includes a sealed pump housing. The inner cavity of the pump housing is divided into an upper and lower oil storage chamber and a main piston chamber by a pump chamber partition. An oil return hole and an oil inlet hole are sequentially provided on the pump chamber partition. A main piston is installed in the main piston chamber, which divides the piston chamber into a main oil chamber and a secondary oil chamber. An elastic element is provided between the piston and the main oil chamber. The oil reservoir is connected to the main oil chamber and the auxiliary oil chamber through an oil return hole and an oil inlet hole, allowing brake fluid to circulate between them. The lower part of the main oil chamber is provided with an interface that connects to the brake fluid pipe. The distance between the oil return hole and the oil inlet hole on the oil pump chamber partition is greater than the thickness of the main piston. The rear end face of the main piston and the inner edge of the oil inlet hole are located on the same vertical plane. When the brake control board does not receive an electrical signal generated by the brake pedal, the main piston chamber is connected to the oil reservoir. When the brake control board receives an electrical signal generated by the brake pedal, it sends it to the electromagnetic thruster, causing the electromagnetic thruster to drive the main piston to reciprocate in the main piston chamber. The electromagnetic thruster includes an electromagnetic coil fixedly mounted on the inner wall of the thrust chamber. A horizontally movable main shaft is mounted on opposite side walls of the thrust chamber, with both ends of the main shaft extending out of the side walls of the thrust chamber. A magnet is mounted on the main shaft inside the thrust chamber. A gap is provided between the electromagnetic coil and the magnet. One end face of the main shaft is connected to the inner side wall of the thrust chamber by an elastic element. The axes of the main shaft and the piston rod are located on the same straight line, and the main shaft abuts against the piston rod. Each wheel is matched with an independent electromagnetic brake assembly.

2. The electromagnetic braking assembly for new energy pure electric vehicles according to claim 1, characterized in that: The oil storage chamber is equipped with a refueling cap.

3. The electromagnetic braking assembly for new energy pure electric vehicles according to claim 1, characterized in that: The piston rod of the main piston extends out of the main piston chamber.

4. The electromagnetic braking assembly for new energy pure electric vehicles according to claim 1, characterized in that: The upper part of the main piston chamber is provided with an oil pressure sensor interface that communicates with the main piston chamber, and an oil pressure sensor is installed on the oil pressure sensor interface.

5. The electromagnetic braking assembly for new energy pure electric vehicles according to claim 1, characterized in that: The main piston chamber has an inwardly oriented boss on one side wall of the piston rod. The piston rod passes through the boss and the side wall of the oil pump housing. A sealing ring is provided between the piston rod, the side wall, and the boss.

6. The electromagnetic braking assembly for new energy pure electric vehicles according to claim 1, characterized in that: The main housing and the oil pump housing are connected and fixed by a coupling gasket.

7. The electromagnetic braking assembly for new energy pure electric vehicles according to claim 1, characterized in that: The thrust chamber has an inwardly oriented boss on one side wall, through which the main shaft passes. The main shaft is installed with the side wall and the boss via a sliding sleeve.

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