Solenoid valve coil structure and automobile brake-by-wire system

Abstract

The embodiment of the utility model discloses an electromagnetic valve coil structure and an automobile brake-by-wire system, and the electromagnetic valve coil structure comprises a coil framework, a first coil, a second coil, a third coil and a fourth coil, the terminal comprises a pin end, a contact end and a connecting body located between the pin end and the contact end, the pin end is inserted into the boss slot of the coil framework, and after the pin end is inserted into the boss slot of the coil framework, the connecting body is bent into a first preset shape. According to the electromagnetic valve coil structure, a novel terminal form and a novel insertion mode are adopted, the stability of the coil is guaranteed, the assembly process difficulty of a production line is reduced, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electromagnetic coil, especially relates to a solenoid valve coil structure and automobile line control brake system. BACKGROUND

[0002] The automobile line control brake system is an electronically controlled brake system, and a brake control unit processes electronic signals and controls a brake actuator to output braking force. In the automobile line control brake system, the solenoid valve coil is a key component, which is mainly responsible for controlling the hydraulic flow in the brake system, thereby achieving the adjustment and control of the wheel brake. The solenoid valve coil is based on electromagnetic effect, and when current passes through the coil, a magnetic field is generated around the coil to attract or push the valve to move, thereby controlling the flow of brake fluid.

[0003] Most of the existing solenoid valve coils are directly welded with coil terminals and circuit boards, and the circuit board is positioned on the coil framework. This structure is too simple, the process steps are complicated, and the processing time is long. Moreover, the distance between the circuit board and the coil is too close, which has a risk of short circuit. In addition, most of the existing solenoid valve coil frameworks lack external connection positioning and injection molding with terminal inserts. This method will complicate the mold structure, increase the assembly process difficulty, prolong the injection molding cycle, increase the manufacturing cost, increase the production difficulty, and the defective products produced by the insert injection molding will cause the entire product to be scrapped.

[0004] Therefore, it is particularly important to develop a solenoid valve coil structure that can ensure the stability of the coil, reduce the assembly process difficulty of the production line, and reduce the production cost. SUMMARY

[0005] To solve the above technical problems, the present application provides a solenoid valve coil structure and an automobile line control brake system, which can solve the problem that there is currently a lack of solenoid valve coil structure that can ensure the stability of the coil, reduce the assembly process difficulty of the production line, and reduce the production cost.

[0006] The technical scheme provided by the present application is as follows:

[0007] On the one hand, the present application provides a solenoid valve coil structure, which comprises:

[0008] A coil framework is provided with a boss slot;

[0009] A terminal comprises a pin end, a contact end, and a connecting body located between the pin end and the contact end. The pin end is inserted into the boss slot of the coil framework, and after the pin end is inserted into the boss slot of the coil framework, the connecting body is bent into a first predetermined shape.

[0010] In some optional embodiments, the pin end, the contact end and the connecting body are integrally formed, and the terminal is linear before the pin end is inserted into the boss slot of the coil framework.

[0011] In some optional embodiments, a anti-dropping structure is arranged at the position where the contact end is connected to the connecting body, and the anti-dropping structure has a second preset shape.

[0012] In some optional embodiments, the coil framework comprises an upper flange plate, and a plurality of buffer columns are arranged on the upper flange plate, and the plurality of buffer columns are evenly distributed on the upper flange plate at equal distances.

[0013] In some optional embodiments, a plurality of buckle structures are further arranged on the upper flange plate of the coil framework, the plurality of buckle structures are located at the edges of the upper flange plate, and the plurality of buckle structures are located on a diameter of the upper flange plate in the horizontal direction.

[0014] In some optional embodiments, the electromagnetic valve coil structure further comprises a coil shell, and the coil shell is located at the outer layer of the electromagnetic valve coil structure.

[0015] In some optional embodiments, the electromagnetic valve coil structure further comprises a coil end cover, and the coil end cover is fixedly connected to the coil shell.

[0016] In some optional embodiments, the electromagnetic valve coil structure further comprises a spring sheet, and the spring sheet is fixedly connected to the coil end cover.

[0017] A first through hole is arranged on the coil end cover, a second through hole is arranged on the spring sheet, the number of the first through holes and the second through holes is the same and is a plurality of, and the positions of the second through holes on the spring sheet correspond to the positions of the first through holes on the coil end cover.

[0018] In some optional embodiments, the electromagnetic valve coil structure further comprises an enameled wire, the coil framework comprises a cylindrical winding part, a winding groove is arranged on the cylindrical winding part, the enameled wire is wound on the winding groove, and the enameled wire is fixedly connected to the terminal.

[0019] In some optional embodiments, the electromagnetic valve coil structure further comprises a rubber coating, and the rubber coating is integrally formed with the coil framework.

[0020] In another aspect, the application further provides an automobile line control braking system, characterized in that the automobile line control braking system comprises the electromagnetic valve coil structure according to any one of the above.

[0021] The electromagnetic valve coil structure provided by the application comprises a coil framework, wherein a boss slot is arranged on the coil framework; a terminal comprises a pin end, a contact end and a connecting body between the pin end and the contact end, the pin end is inserted into the boss slot of the coil framework, and after the pin end is inserted into the boss slot of the coil framework, the connecting body is bent into a first preset shape. The electromagnetic valve coil structure adopts a plug-in mode in which the pin end is inserted into the boss slot of the coil framework, and after being inserted, the connecting body is bent into a new terminal form of a first preset shape, thereby guaranteeing the stability of the coil, reducing the assembly process difficulty of the production line and reducing the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0023] Figure 1 is a component schematic view of the electromagnetic valve coil structure according to an embodiment of the application;

[0024] Figure 2 is a terminal structure schematic view of the electromagnetic valve coil structure according to an embodiment of the application;

[0025] Figure 3 is a cross-sectional view of the electromagnetic valve coil structure according to an embodiment of the application;

[0026] Figure 4 is a whole structure schematic view of the electromagnetic valve coil structure according to an embodiment of the application;

[0027] The following is a supplementary description of the drawings:

[0028] 1-coil shell; 2-gumming; 3-enamelled wire; 4-coil framework; 5-coil end cover; 6-elastic sheet; 7-terminal;

[0029] 41-boss slot; 42-upper flange plate; 43-buffer column; 44-buckle structure; 45-cylindrical winding part; 46-lower flange plate;

[0030] 51-first through hole; 61-second through hole;

[0031] 71-pin end; 72-connecting body; 73-contact end; 74-anti-dropping structure; 711-welding part. DETAILED DESCRIPTION

[0032] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0033] The term "one embodiment" or "an embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one implementation of the application. The appearances of the term "an embodiment" or "one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily referring to a single embodiment. In the description of the application, the terms "upper", "lower", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein.

[0034] When a numerical range is disclosed herein, the range is considered continuous along the entire range and inclusive of the minimum and maximum values of the range, as well as every value between the minimum and maximum values. Further, when the range is of integers, every integer between the minimum and maximum values of the range is included. In addition, when multiple ranges are provided to describe a feature or characteristic, the ranges can be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood as including any and all sub-ranges subsumed therein. For example, a specified range of "1 to 10" is to be understood as including any and all sub-ranges between (and including) the minimum value of 1 and the maximum value of 10. An exemplary sub-range of the range 1 to 10 includes, but is not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, etc.

[0035] Since there is currently a lack of electromagnetic valve coil structure that can guarantee the stability of the coil, reduce the assembly process difficulty of the production line, and reduce the production cost, in order to guarantee the stability of the coil, reduce the assembly process difficulty of the production line, and reduce the production cost, the application provides an electromagnetic valve coil structure and an automobile brake-by-wire system.

[0036] Please refer to Figure 1 , Figure 1It is the component schematic view of electromagnetic valve coil structure according to an embodiment of the utility model, the utility model provides a kind of electromagnetic valve coil structure, the electromagnetic valve coil structure includes:

[0037] Coil former 4, boss slot 41 is provided on the coil former 4;

[0038] Terminal 7, the terminal 7 includes pin end 71, contact end 73 and the connecting body 72 between the pin end 71 and the contact end 73, the pin end 71 is inserted into the boss slot 41 of the coil former 4, and after the pin end 71 is inserted into the boss slot 41 of the coil former 4, the connecting body 72 is bent into first preset shape.

[0039] In an alternative embodiment, the pin end 71, the contact end 73 and the connecting body 72 are integrally formed, and before the pin end 71 is inserted into the boss slot 41 of the coil former 4, the terminal 7 is linear.

[0040] Please refer to Figure 2 , Figure 2 It is the terminal structure schematic view of electromagnetic valve coil structure according to an embodiment of the utility model. Optionally, the pin end 71, the contact end 73 and the connecting body 72 are integrally formed.

[0041] Optionally, the terminal 7 is used to connect the wire of the coil with the circuit of the brake control unit, so that current can flow into and out of the coil. It should be noted that the terminal 7 is linear, the pin end 71 of the terminal 7 is used to be inserted into the boss slot 41, and the contact end 73 is used to be inserted into the shell of the brake control unit.

[0042] Optionally, after the pin end 71 is inserted into the boss slot 41 of the coil former 4, the connecting body 72 is bent into first preset shape. The first preset shape can be set according to actual business requirements, which is not limited here. Exemplarily, the part of the connecting body 72 after insertion can be bent into the shape of "S", and the two included angles of the "S" shape can be any angle.

[0043] The bottom of the terminal 7 is designed to be directly inserted into the coil former 4, and the terminal 7 is linear, which reduces the difficulty of alignment in the installation process. After being inserted into the boss slot 41, the connecting body 72 is bent into first preset shape, which can realize self-adaptive adjustment of the shape of the terminal 7, thereby absorbing the assembly error of the brake control unit shell and other parts, and providing design flexibility. The pin end 71 is inserted into the boss slot 41 of the coil former 4 in the plug-in mode, and the connecting body is bent into first preset shape after insertion, which is a new type of terminal form, guarantees the stability of the coil, reduces the assembly process difficulty of the production line, and reduces the production cost.

[0044] In an optional embodiment, a anti-falling structure 74 is arranged at the position where the contact end 73 of the terminal 7 is connected to the connecting body 72, and the anti-falling structure 74 has a second preset shape.

[0045] Optionally, the second preset shape can be set according to actual business needs, which is not limited here, and the second preset shape can be a straight-angled trapezoidal shape, for example.

[0046] Optionally, a sawtooth-shaped structure can also be arranged between the tail of the contact end 73 of the terminal 7 and the anti-falling structure 74, which is used to prevent the contact end 73 from falling off after being inserted into the brake control unit housing.

[0047] Optionally, a sawtooth-shaped structure can also be arranged at the head of the pin end 71 of the terminal 7, which is used to prevent the pin end 71 from falling off after being inserted into the boss slot 41.

[0048] By arranging the anti-falling structure 74, the terminal 7 can be engaged with the corresponding part inside the control unit housing when inserted into the brake control unit housing, forming a stronger locking effect and preventing the terminal 7 from falling off when subjected to external force.

[0049] Optionally, the coil former 4 is used to provide a support structure for winding the coil, ensuring that the coil maintains a stable shape and position during winding and subsequent use. The coil former 4 includes an upper flange plate 42, a lower flange plate 46, and a cylindrical winding part 45. The boss slot 41 is arranged on the upper flange plate 42.

[0050] Optionally, the number of terminals 7 is the same as the number of boss slots 41, and the number of terminals 7 can be set according to actual business needs, which is not limited here. For example, two terminals 7 can be used, each inserted into two boss slots 41.

[0051] Optionally, the terminal 7 is inserted into the boss slot 41 in an interference fit. That is, the size of the pin end 71 of the terminal 7 is slightly larger than the size of the boss slot 41. The interference fit insertion method can ensure that there is no gap between the terminal 7 and the boss slot 41, increasing the friction between the terminal 7 and the boss slot 41, thereby reducing connection problems caused by looseness or vibration, improving the stability and reliability of the connection, and making the connection more secure and able to withstand greater stress.

[0052] In an optional embodiment, the coil former 4 includes an upper flange plate 42, and a plurality of buffer columns 43 are arranged on the upper flange plate 42, which are evenly distributed on the upper flange plate 42 at equal distances.

[0053] Optionally, the number of buffer columns 43 can be set according to actual business needs, which is not limited herein. For example, three buffer columns 43 can be provided, which are uniformly distributed on the upper flange plate 42 at equal distances. The provision of buffer columns can avoid deformation or damage of the coil former 4 caused by the coil end cover 5 during riveting.

[0054] In an optional embodiment, the upper flange plate 42 of the coil former 4 is further provided with a plurality of buckle structures 44 located at the edge of the upper flange plate 42. The plurality of buckle structures 44 are located on a diameter of the upper flange plate 42 in the horizontal direction.

[0055] Optionally, the shape of the buckle structure 44 can be set according to actual business needs, which is not limited herein. For example, the shape of the buckle structure 44 can be rectangular.

[0056] Optionally, the number of buckle structures 44 can be set according to actual business needs, which is not limited herein. For example, two buckle structures 44 can be provided to form a double-sided buckle. The two buckle structures 44 are located at the edge of the upper flange plate 42 and are located on a diameter of the upper flange plate 42 in the horizontal direction. By increasing the buckle structure 44 of the electromagnetic valve coil structure, the coil can be prevented from falling off, and the thickness of the buckle structure 44 can be ensured to reduce the risk of breakage.

[0057] In an optional embodiment, the electromagnetic valve coil structure further comprises a coil shell 1 located at the outer layer of the electromagnetic valve coil structure.

[0058] Optionally, the coil shell 1 is provided at the outermost layer of the electromagnetic valve coil structure.

[0059] In an optional embodiment, the electromagnetic valve coil structure further comprises a coil end cover 5 fixedly connected with the coil shell 1.

[0060] Optionally, the coil end cover 5 and the coil shell 1 are fixedly connected by interference fit and rivet riveting. By interference riveting, interference fit reduces the possibility of loosening caused by vibration or impact. The fixing effect of the rivet further ensures that the connection will not loosen due to long-term use, which can ensure the stability and reliability of the connection and further enhance the mechanical strength of the connection, making the electromagnetic valve coil structure more solid.

[0061] In an optional embodiment, the electromagnetic valve coil structure further comprises a spring 6 fixedly connected with the coil end cover 5.

[0062] The coil end cover 5 is provided with a first through hole 51, and the elastic sheet 6 is provided with a second through hole 61, the number of the first through hole 51 and the second through hole 61 is same and several, and the second through hole 61 on the elastic sheet 6 corresponds to the first through hole 51 on the coil end cover 5.

[0063] Optionally, the number of the first through hole 51 and the second through hole 61 can be set according to actual business needs, which is not limited herein, and the number of the first through hole 51 and the second through hole 61 can be two exemplarily.

[0064] Optionally, the elastic sheet 6 is fixed on the coil end cover 5, and the elastic sheet 6 and the coil end cover 5 are fixed and connected by two first through holes 51 and two second through holes 61 in a rivet pressing manner. The elastic sheet 6 arranged on the coil end cover 5 can absorb and disperse the energy caused by vibration, reduce the vibration of the entire electromagnetic valve coil structure, and thus reduce the noise; meanwhile, the elastic sheet 6 can play a role of pre-pressing buffer when the terminal 7 is inserted into the housing of the brake control unit, and can slow down the impact in the process of inserting the terminal 7 into the boss slot 41, so as to prevent the terminal 7 from being damaged due to hard contact, thereby improving the assembly stability and the noise, vibration and roughness effect.

[0065] In an optional embodiment, the electromagnetic valve coil structure further comprises an enameled wire 3, the coil former 4 comprises a cylindrical winding part 45, the cylindrical winding part 45 is provided with a wire groove, the enameled wire 3 is wound on the wire groove, and the enameled wire 3 is fixedly connected with the terminal 7.

[0066] Optionally, the enameled wire 3 is wound on the wire groove, the wire groove can maintain appropriate spacing between the enameled wires, avoid direct contact between adjacent wires, and thus prevent short circuit phenomenon, and meanwhile, the design of the wire groove is helpful for air circulation, improves the heat dissipation performance of the coil, and helps to reduce the temperature rise of the coil.

[0067] Optionally, the terminal 7 is provided with a welding part 711, which is used for soldering and fixing the enameled wire 3 and the terminal 7 by solder wire.

[0068] In an optional embodiment, the electromagnetic valve coil structure further comprises a rubber coating 2, and the rubber coating 2 is integrally formed with the coil former 4.

[0069] Optionally, the rubber coating 2 can be made of high-temperature wear-resistant material, which can effectively improve the heat dissipation performance of the coil, reduce the temperature rise of the coil, and improve the durability and service life of the coil.

[0070] Optionally, the encapsulation 2 is integrally injection molded with the wound coil former 4, which can reduce the temperature rise of the coil; when the wound coil is subjected to vibration or temperature change, the enameled wire may displace, resulting in a wire jump, the integrally injection molded encapsulation 2 and the wound coil former 4 can fix the winding of the coil and reduce the movement of the coil, thereby avoiding the short circuit problem caused by the contact between the enameled wire 3 and the coil shell 1, further improving the safety and reliability of the coil, and the integrally injection molding can integrate multiple components into one whole, simplifying the assembly process and reducing the production cost.

[0071] Please refer to Figure 3 、 Figure 4 , Figure 3 is a sectional view of an electromagnetic valve coil structure according to an embodiment of the present application; Figure 4 is a whole structure schematic view of the electromagnetic valve coil structure according to an embodiment of the present application. Hereinafter, the electromagnetic valve coil structure is described as a whole:

[0072] The electromagnetic valve coil structure provided by the present application has the following structure: a coil shell 1, an encapsulation 2, an enameled wire 3, a coil former 4, a coil end cover 5, a spring piece 6, and a terminal 7.

[0073] The coil former 4 comprises a boss slot 41, an upper flange plate 42, a buffer column 43, a buckle structure 44, a cylindrical winding part 45, and a lower flange plate 46; the coil end cover 5 comprises a first through hole 51; the spring piece 6 comprises a second through hole 61; and the terminal 7 comprises a pin end 71, a connecting body 72, a contact end 73, an anti-dropping structure 74, and a welding part 711.

[0074] In an optional embodiment, the cylindrical winding part 45 is provided with a winding groove, and the enameled wire 3 is wound in the winding groove.

[0075] Further, the pin end 71 is inserted into the boss slot 41 of the coil former 4, the enameled wire 3 is fixedly connected with the terminal 7 by welding, and the encapsulation 2 is integrally injection molded with the wound coil former 4; and the connecting body 72 is bent into a first preset shape.

[0076] Further, the coil end cover 5 is provided with a first through hole 51, and the spring piece 6 is provided with a second through hole 61; the number of the first through holes 51 and the second through holes 61 is the same and is several; the second through hole 61 on the spring piece 6 corresponds to the position of the first through hole 51 on the coil end cover 5; and the spring piece 6 and the coil end cover 5 are fixedly connected by two first through holes 51 and two second through holes 61 in a rivet pressing manner.

[0077] Further, the coil end cover 5 is fixedly connected with the coil shell 1 by interference fit and rivet pressing, and is installed on the upper flange plate 42 of the coil framework 4 to obtain a complete electromagnetic valve coil structure.

[0078] The electromagnetic valve coil structure provided by the application has the following beneficial effects:

[0079] 1) The pin end 71 is inserted into the boss slot 41 of the coil framework 4 in a plug-in manner, and the connecting body is bent into a new type of terminal form in a first preset shape after insertion, thereby ensuring the stability of the coil, reducing the assembly process difficulty of the production line, and reducing the production cost.

[0080] 2) The anti-disengagement structure 74 is provided, so that the terminal 7 can be firmly fixed in the positioning hole of the brake control unit shell when inserted into the brake control unit, thereby preventing the terminal 7 from falling off when subjected to external force.

[0081] 3) The buckle structure 44 is provided, which can effectively prevent the coil from falling off.

[0082] 4) The elastic sheet 6 is provided on the coil end cover 5, which can absorb and disperse the energy caused by vibration, reduce the vibration of the entire electromagnetic valve coil structure, and thereby reduce the noise; at the same time, the impact is slowed down when the terminal 7 is inserted into the brake control unit shell, thereby preventing the terminal 7 from being damaged due to hard contact, and thereby improving the assembly stability and the noise, vibration and roughness effect.

[0083] In an optional embodiment, the application further provides an automobile line control braking system, which comprises the electromagnetic valve coil structure according to any one of the above.

[0084] The above is only an optional embodiment of the application, and is not used to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. An electromagnetic valve coil structure, characterized by comprising: The electromagnetic valve coil structure comprises: A coil skeleton (4) provided with a boss slot (41); A terminal (7) comprising a pin end (71), a contact end (73), and a connecting body (72) between the pin end (71) and the contact end (73), the pin end (71) being inserted into the boss slot (41) of the coil skeleton (4), and the connecting body (72) being bent into a first preset shape after the pin end (71) is inserted into the boss slot (41) of the coil skeleton (4).

2. The solenoid valve coil structure according to claim 1, characterized by The pin end (71), the contact end (73), and the connecting body (72) are integrally formed, and the terminal (7) is in a straight line before the pin end (71) is inserted into the boss slot (41) of the coil skeleton (4).

3. The solenoid valve coil structure according to claim 1, wherein A anti-off structure (74) having a second preset shape is arranged at the position where the contact end (73) is connected to the connecting body (72).

4. The solenoid valve coil structure according to claim 1, wherein The coil skeleton (4) comprises an upper flange plate (42) provided with a plurality of buffer columns (43) evenly distributed on the upper flange plate (42) at equal distances.

5. The solenoid valve coil structure according to claim 4, wherein The upper flange plate (42) of the coil skeleton (4) is further provided with a plurality of buckle structures (44) located at the edge of the upper flange plate (42), and the plurality of buckle structures (44) are located on one diameter of the upper flange plate (42) in the horizontal direction.

6. The solenoid valve coil structure according to claim 1, wherein The electromagnetic valve coil structure further comprises a coil shell (1) located at the outer layer of the electromagnetic valve coil structure.

7. The solenoid valve coil structure according to claim 6, wherein The electromagnetic valve coil structure further comprises a coil end cover (5) fixedly connected with the coil shell (1).

8. The solenoid valve coil structure according to claim 7, wherein The electromagnetic valve coil structure further comprises a spring sheet (6) fixedly connected with the coil end cover (5). The coil end cover (5) is provided with a first through hole (51), and the spring sheet (6) is provided with a second through hole (61), the number of the first through holes (51) and the second through holes (61) being the same and being a plurality, and the positions of the second through holes (61) on the spring sheet (6) correspond to the positions of the first through holes (51) on the coil end cover (5).

9. The solenoid valve coil structure according to claim 1, wherein The electromagnetic valve coil structure further comprises an enameled wire (3), the coil skeleton (4) comprises a cylindrical winding part (45) provided with a wire slot, the enameled wire (3) is wound on the wire slot, and the enameled wire (3) is fixedly connected with the terminal (7).

10. An automobile brake-by-wire system characterized by comprising: The automobile brake-by-wire system comprises the electromagnetic valve coil structure according to any one of claims 1-9.

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