CN112440962B - Electric automobile arresting gear - Google Patents
Electric automobile arresting gear Download PDFInfo
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- CN112440962B CN112440962B CN202011337744.4A CN202011337744A CN112440962B CN 112440962 B CN112440962 B CN 112440962B CN 202011337744 A CN202011337744 A CN 202011337744A CN 112440962 B CN112440962 B CN 112440962B
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- plate
- cavity
- valve
- brake
- refrigeration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/36—Other control devices or valves characterised by definite functions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T5/00—Vehicle modifications to facilitate cooling of brakes
Abstract
The brake device of the electric automobile comprises a brake structure and an electromagnetic valve, wherein the electromagnetic valve controls the on-off of a liquid path between the brake structure and a storage chamber; the brake structure comprises a composite hydraulic cylinder, a pedal, a brake piston, a first power-assisted cavity, a simulation cavity, a second power-assisted cavity, a first brake cavity, a second brake cavity, a first plate, a second plate, a third plate and a fourth plate; first helping hand chamber, simulation chamber, second helping hand chamber, first braking chamber, second braking chamber adjoin in proper order, the motion of footboard control brake piston, the brake piston is located in the first helping hand chamber, first board with be equipped with between the second board the simulation chamber, the simulation chamber feedback pressure extremely the footboard is with simulation brake feedback force.
Description
Technical Field
The invention relates to the field of electric automobiles, in particular to a braking device of an electric automobile.
Background
With the continuous development of science and technology and economy, an automobile becomes an irreplaceable vehicle in production and life, and the popularization of the automobile also makes people have higher and higher requirements on the riding comfort of the automobile.
In recent years, electric automobiles are greatly popularized as an important practicing link of the green environmental protection concept, the preservation quantity of the electric automobiles is also improved year by year, however, the development years and months of the electric automobiles are different from oil automobiles, and the electric automobiles have larger improvement space in all aspects, and the technology of the electric automobiles is also paid attention and actively developed by researchers.
In the electric automobile brake system in the prior art, an electromagnetic valve is used for controlling the liquid on-off of the brake system by liquid.
The disadvantages in the prior art braking systems are as follows:
1. the refrigeration of the electric automobile in the prior art is a common link, but the refrigeration of the detail part is not in place, especially the refrigeration of the brake system is not in place.
The electromagnetic valve refrigeration in the prior art can only partially refrigerate, for example, the refrigeration is carried out below an electromagnetic coil, and a comprehensive refrigeration mode is lacked.
The electromagnetic valve refrigeration of the prior art needs to be provided with a refrigeration cavity, and a refrigeration channel is processed on the shell, however, the refrigeration channel belongs to micro-machining, and the processing and manufacturing cost is higher.
In the electric automobile brake system in the prior art, a solenoid valve controls the on-off of a hydraulic cavity, however, the on-off cannot realize multi-mode adjustment, for example, cannot realize linear regulation of flow.
The solenoid valve of prior art has the demand of opening fast, and the mode of nevertheless using always still increases power, and the solution thinking is more single.
The solenoid valve in the prior art can maintain power consumption when being opened, and a magnet is used as a common solution, but no other solution is provided.
Disclosure of Invention
In order to overcome the above problems, the present invention proposes a solution to solve the above problems simultaneously.
The technical scheme adopted by the invention for solving the technical problems is as follows: the brake device of the electric automobile comprises a brake structure and an electromagnetic valve, wherein the electromagnetic valve controls the on-off of a liquid path between the brake structure and a storage chamber; the brake structure comprises a composite hydraulic cylinder, a pedal, a brake piston, a first power-assisted cavity, a simulation cavity, a second power-assisted cavity, a first brake cavity, a second brake cavity, a first plate, a second plate, a third plate and a fourth plate; the first power-assisted cavity, the simulation cavity, the second power-assisted cavity, the first brake cavity and the second brake cavity are sequentially abutted, the pedal controls the motion of a brake piston, the brake piston is positioned in the first power-assisted cavity, the simulation cavity is arranged between the first plate and the second plate, a first spring is arranged between the first plate and the second plate, and the simulation cavity feeds back pressure to the pedal through the first spring so as to simulate brake feedback force; the second boosting cavity is arranged between the second plate and the third plate; a first brake cavity is arranged between the third plate and the fourth plate, and a second spring is arranged in the first brake cavity; the second brake cavity is arranged between the fourth plate and the composite hydraulic cylinder body, and a third spring is arranged in the second brake cavity;
the electromagnetic valve comprises a valve body, a refrigeration plate, a coil shell, a terminal cover, a piston plate, a plug, a valve rod, a valve core, a liquid inlet pipe, a right-angle refrigeration joint, an armature, a coil and a liquid outlet pipe; the valve body comprises a liquid inlet, a vertical channel, an inclined channel, a piston upper cavity, a piston lower cavity, a valve core upper cavity, a mounting groove, a liquid outlet, a valve seat surface and an adaptive valve block, wherein a liquid through hole is formed in the valve core, a refrigeration cavity is formed in the refrigeration plate, a refrigeration channel is formed in the terminal cover, a transverse hole and a vertical hole are formed in the right-angle refrigeration joint, and a liquid discharge hole is formed in the piston plate;
the terminal cover is arranged above the coil shell, a connecting terminal is arranged on one side of the terminal cover, the right-angle refrigeration joint is arranged below one side of the terminal cover and comprises a transverse plate and a vertical plate, the transverse plate is provided with the transverse hole, the vertical plate is provided with the vertical hole, the vertical hole is communicated with the liquid inlet pipe, the lower end of the liquid inlet pipe is communicated with the refrigeration cavity, the liquid outlet pipe is arranged below the other side of the terminal cover, the lower end of the liquid outlet pipe is communicated with the refrigeration cavity, and the upper end of the liquid outlet pipe is communicated with the refrigeration channel; the coil, the armature and the guide block are arranged in the coil shell, an upper plug is arranged above the armature, and the armature moves up and down in the coil by means of the guide block;
the refrigeration plate is arranged below the coil shell, the valve body is arranged below the refrigeration plate, the liquid outlet is arranged on one side of the valve body, the liquid inlet is arranged on the other side of the valve body, the liquid inlet is communicated with the vertical channel, the inclined channel is communicated below the vertical channel, the mounting groove is arranged below the valve body, and the plug is fixedly arranged in the mounting groove; the liquid discharge hole is positioned on one side of the piston plate, and the inclined channel is positioned on the other side of the piston plate;
in the closed position, one side of the valve core is provided with the valve seat surface, the other side of the valve core is provided with the adaptive valve block, the valve seat surface is opposite to the liquid inlet, and a channel is arranged in the adaptive valve block and is communicated with the liquid inlet; the upper cavity of the valve core is arranged above the valve seat surface;
the lower part of the armature is connected with the valve rod through a connecting piece, the valve rod is respectively connected with the valve core and the piston plate, the valve core is positioned above the piston plate, and the diameter of the liquid discharge hole is larger than that of the liquid through hole; in the closed position, the upper end of the armature abuts against the upper plug, the height of the valve seat surface is greater than one sixth of the height of the valve body, and meanwhile, in the closed position, the piston plate plugs the inclined channel; in the open position, the valve cartridge is located below the valve seat surface and the piston plate rests on the plug.
Further, the number of the transverse holes is two.
Further, the number of the vertical holes is two.
Further, the refrigeration channel comprises a horizontal section and a vertical section.
Further, the coil is wound on the coil framework.
Further, the liquid inlet pipe is located on the outer side of the coil shell.
Further, the liquid outlet pipe is located on the outer side of the coil shell.
Further, the diameter of the inclined channel is smaller than that of the vertical channel.
Further, the guide block is an annular block.
Furthermore, the liquid inlet and the liquid outlet are arranged in a staggered manner.
The invention has the beneficial effects that:
1. in view of the background art 1, a method of cooling by a solenoid valve in a brake system of an electric vehicle is adopted.
To the 2 nd point of background art, the design of the terminal cover of solenoid valve has been adopted, and the refrigeration chamber of terminal cover upper cooperation lower extreme and the refrigeration pipeline of both sides enclose into a whole to refrigerate solenoid valve coil.
To background art's 3 rd point, adopt the terminal cover as the key of processing installation, connected the right angle refrigeration in one side below of terminal cover and connected the refrigeration and connect, refrigeration connects the diaphragm connecting terminal cover, and the inlet tube is connected to the riser lower extreme, and the below direct connection of the terminal cover other end goes out the water pipe, has adopted the cooperation back of terminal cover with the water pipe, has avoided directly processing the refrigeration passageway on solenoid valve case.
To the 4 th point of the background art, the valve core of the electromagnetic valve can realize three modes, besides two opening and closing modes, a flow regulation mode is provided, a channel is arranged in the electromagnetic valve core, however, only the valve core channel is arranged, so that the channel cannot be closed, and therefore the side surface of the valve core is designed to close.
This design may result in a different approach from the existing vertical abutment, which may result in a lack of a position-limiting measure for the valve seat, and the area of the closed position is also a concern, which may result in too little or not tight flow.
Therefore, the measure that the upper end of the armature abuts against the position of the plug when the valve body is in the closed position is adopted, the problem of insufficient limiting of the valve seat is solved, the length of the valve seat is increased, and the height of the valve seat is greater than one sixth of the height of the valve body.
To the 5 th point of the background art, the valve body is additionally provided with the vertical channel and the inclined channel, the outlet of the inclined channel can be opened in the moment that the piston moves, the impact piston can be quickly opened, the piston on the other side of the impact side is provided with a hole, liquid below the piston can be discharged, and the size of the hole is larger than that of the valve core hole, so that quick discharge can be realized.
And aiming at the 6 th point of the background technology, in the opening position, the piston is placed on the plug without additional power maintenance, thereby saving energy and power consumption.
Note: the foregoing designs are not sequential, each of which provides a distinct and significant advance in the present invention over the prior art.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is an overall view of the closed state of the solenoid valve of the present invention.
Fig. 2 is an overall view of the open state of the solenoid valve of the present invention.
Figure 3 is a perspective view of the right angle refrigeration coupling of the present invention.
FIG. 4 is a schematic diagram of an electric vehicle braking system of the present invention.
In the figures, the reference numerals are as follows:
1. the valve comprises a valve body 2, a liquid inlet 3, a vertical channel 4, an inclined channel 5, a piston plate 6, a plug 7, a piston lower cavity 8, a liquid discharge hole 9, a mounting groove 10, a liquid outlet 11, a valve rod 12, a valve seat surface 13, a valve core 14, a liquid through hole 15, a valve core upper cavity 16, a refrigeration plate 17, a refrigeration cavity 18, a liquid inlet pipe 19, a right-angle refrigeration joint 20, a terminal cover 21, an armature 22, a refrigeration channel 23, a coil shell 24, a coil 25, a liquid outlet pipe 26, a transverse hole 27, a vertical hole 28, a pedal 29, a brake piston 30, a first power assisting cavity 31, a simulation cavity 32, a second power assisting cavity 33, a first brake cavity 34, a second brake cavity 35, a storage cavity 36, a pump 37, an energy accumulator 38, a first check valve 39, a second check valve 40, an adaptive valve block 41, a first plate 42, a second plate 43, a third plate 44 and a fourth plate.
Detailed Description
As shown in the figure: the brake device of the electric automobile comprises a brake structure and an electromagnetic valve, wherein the electromagnetic valve controls the on-off of a liquid path between the brake structure and a storage chamber; the brake structure comprises a composite hydraulic cylinder, a pedal, a brake piston, a first power-assisted cavity, a simulation cavity, a second power-assisted cavity, a first brake cavity, a second brake cavity, a first plate, a second plate, a third plate and a fourth plate; the first power-assisted cavity, the simulation cavity, the second power-assisted cavity, the first brake cavity and the second brake cavity are sequentially abutted, the pedal controls the motion of a brake piston, the brake piston is positioned in the first power-assisted cavity, the simulation cavity is arranged between the first plate and the second plate, a first spring is arranged between the first plate and the second plate, and the simulation cavity feeds back pressure to the pedal through the first spring so as to simulate brake feedback force; the second boosting cavity is arranged between the second plate and the third plate; a first brake cavity is arranged between the third plate and the fourth plate, and a second spring is arranged in the first brake cavity; the second brake cavity is arranged between the fourth plate and the composite hydraulic cylinder body, and a third spring is arranged in the second brake cavity;
the electromagnetic valve comprises a valve body, a refrigeration plate, a coil shell, a terminal cover, a piston plate, a plug, a valve rod, a valve core, a liquid inlet pipe, a right-angle refrigeration joint, an armature, a coil and a liquid outlet pipe; the valve body comprises a liquid inlet, a vertical channel, an inclined channel, a piston upper cavity, a piston lower cavity, a valve core upper cavity, a mounting groove, a liquid outlet, a valve seat surface and an adaptive valve block, wherein a liquid through hole is formed in the valve core, a refrigeration cavity is formed in the refrigeration plate, a refrigeration channel is formed in the terminal cover, a transverse hole and a vertical hole are formed in the right-angle refrigeration joint, and a liquid discharge hole is formed in the piston plate;
the terminal cover is arranged above the coil shell, a connecting terminal is arranged on one side of the terminal cover, the right-angle refrigeration joint is arranged below one side of the terminal cover and comprises a transverse plate and a vertical plate, the transverse plate is provided with the transverse hole, the vertical plate is provided with the vertical hole, the vertical hole is communicated with the liquid inlet pipe, the lower end of the liquid inlet pipe is communicated with the refrigeration cavity, the liquid outlet pipe is arranged below the other side of the terminal cover, the lower end of the liquid outlet pipe is communicated with the refrigeration cavity, and the upper end of the liquid outlet pipe is communicated with the refrigeration channel; the coil, the armature and the guide block are arranged in the coil shell, an upper plug is arranged above the armature, and the armature moves up and down in the coil by means of the guide block;
the refrigeration plate is arranged below the coil shell, the valve body is arranged below the refrigeration plate, the liquid outlet is arranged on one side of the valve body, the liquid inlet is arranged on the other side of the valve body, the liquid inlet is communicated with the vertical channel, the inclined channel is communicated below the vertical channel, the mounting groove is arranged below the valve body, and the plug is fixedly arranged in the mounting groove; the liquid discharge hole is positioned on one side of the piston plate, and the inclined channel is positioned on the other side of the piston plate;
in the closed position, one side of the valve core is provided with the valve seat surface, the other side of the valve core is provided with the adaptive valve block, the valve seat surface is opposite to the liquid inlet, and a channel is arranged in the adaptive valve block and is communicated with the liquid inlet; the upper cavity of the valve core is arranged above the valve seat surface;
the lower part of the armature is connected with the valve rod through a connecting piece, the valve rod is respectively connected with the valve core and the piston plate, the valve core is positioned above the piston plate, and the diameter of the liquid discharge hole is larger than that of the liquid through hole; in the closed position, the upper end of the armature abuts against the upper plug, the height of the valve seat surface is greater than one sixth of the height of the valve body, and meanwhile, in the closed position, the piston plate plugs the inclined channel; in the open position, the valve cartridge is located below the valve seat surface and the piston plate rests on the plug.
As shown in the figure: the number of the transverse holes is two. The number of the vertical holes is two. The refrigeration channel comprises a horizontal section and a vertical section. The coil is wound on the coil framework. The liquid inlet pipe is positioned on the outer side of the coil shell. The liquid outlet pipe is located on the outer side of the coil shell. The diameter of the inclined channel is smaller than that of the vertical channel. The guide block is an annular block. The liquid inlet and the liquid outlet are arranged in a staggered manner.
The braking principle is as follows:
when the electromagnetic valve is in a closed state, the pump conveys liquid into the second power assisting cavity, the second power assisting cavity is filled with the liquid, and when a driver steps on a pedal, the pressure in the second power assisting cavity prevents the second plate from moving, so that braking feedback force is simulated by means of the first spring; when the simulated braking is switched to the manual braking, the valve core moves downwards to a middle position, and in the middle position, the piston plate is not in contact with the plug, and the armature is not in contact with the upper plug; thereby ensuring that the liquid in the second boosting cavity is stably discharged; when the valve core moves downwards until the piston plate is placed on the plug, the electromagnetic valve is fully opened, so that liquid in the second power assisting cavity is discharged, and when a driver steps down the pedal, the second plate is in contact with the rod on the right side of the third plate to transmit braking power.
The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides an electric automobile arresting gear which characterized in that: the electromagnetic valve controls the on-off of a liquid path between the braking structure and the storage chamber; the brake structure comprises a composite hydraulic cylinder, a pedal, a brake piston, a first power-assisted cavity, a simulation cavity, a second power-assisted cavity, a first brake cavity, a second brake cavity, a first plate, a second plate, a third plate and a fourth plate; the first power-assisted cavity, the simulation cavity, the second power-assisted cavity, the first brake cavity and the second brake cavity are sequentially abutted, the pedal controls the motion of a brake piston, the brake piston is positioned in the first power-assisted cavity, the simulation cavity is arranged between the first plate and the second plate, a first spring is arranged between the first plate and the second plate, and the simulation cavity feeds back pressure to the pedal through the first spring so as to simulate brake feedback force; the second boosting cavity is arranged between the second plate and the third plate; a first brake cavity is arranged between the third plate and the fourth plate, and a second spring is arranged in the first brake cavity; the second brake cavity is arranged between the fourth plate and the composite hydraulic cylinder body, and a third spring is arranged in the second brake cavity;
the electromagnetic valve comprises a valve body, a refrigeration plate, a coil shell, a terminal cover, a piston plate, a plug, a valve rod, a valve core, a liquid inlet pipe, a right-angle refrigeration joint, an armature, a coil and a liquid outlet pipe; the valve body comprises a liquid inlet, a vertical channel, an inclined channel, a piston upper cavity, a piston lower cavity, a valve core upper cavity, a mounting groove, a liquid outlet, a valve seat surface and an adaptive valve block, wherein a liquid through hole is formed in the valve core, a refrigeration cavity is formed in the refrigeration plate, a refrigeration channel is formed in the terminal cover, a transverse hole and a vertical hole are formed in the right-angle refrigeration joint, and a liquid discharge hole is formed in the piston plate;
the terminal cover is arranged above the coil shell, a connecting terminal is arranged on one side of the terminal cover, the right-angle refrigeration joint is arranged below one side of the terminal cover and comprises a transverse plate and a vertical plate, the transverse plate is provided with the transverse hole, the vertical plate is provided with the vertical hole, the vertical hole is communicated with the liquid inlet pipe, the lower end of the liquid inlet pipe is communicated with the refrigeration cavity, the liquid outlet pipe is arranged below the other side of the terminal cover, the lower end of the liquid outlet pipe is communicated with the refrigeration cavity, and the upper end of the liquid outlet pipe is communicated with the refrigeration channel; the coil, the armature and the guide block are arranged in the coil shell, an upper plug is arranged above the armature, and the armature moves up and down in the coil by means of the guide block;
the refrigeration plate is arranged below the coil shell, the valve body is arranged below the refrigeration plate, the liquid outlet is arranged on one side of the valve body, the liquid inlet is arranged on the other side of the valve body, the liquid inlet is communicated with the vertical channel, the inclined channel is communicated below the vertical channel, the mounting groove is arranged below the valve body, and the plug is fixedly arranged in the mounting groove; the liquid discharge hole is positioned on one side of the piston plate, and the inclined channel is positioned on the other side of the piston plate;
in the closed position, one side of the valve core is provided with the valve seat surface, the other side of the valve core is provided with the adaptive valve block, the valve seat surface is opposite to the liquid inlet, and a channel is arranged in the adaptive valve block and is communicated with the liquid inlet; the upper cavity of the valve core is arranged above the valve seat surface;
the lower part of the armature is connected with the valve rod through a connecting piece, the valve rod is respectively connected with the valve core and the piston plate, the valve core is positioned above the piston plate, and the diameter of the liquid discharge hole is larger than that of the liquid through hole; in the closed position, the upper end of the armature abuts against the upper plug, the height of the valve seat surface is greater than one sixth of the height of the valve body, and meanwhile, in the closed position, the piston plate plugs the inclined channel; in the open position, the valve cartridge is located below the valve seat surface and the piston plate rests on the plug.
2. The braking device for an electric vehicle according to claim 1, wherein: the number of the transverse holes is two.
3. The braking device for an electric vehicle according to claim 1, wherein: the number of the vertical holes is two.
4. The braking device for an electric vehicle according to claim 1, wherein: the refrigeration channel comprises a horizontal section and a vertical section.
5. The braking device for an electric vehicle according to claim 1, wherein: the coil is wound on the coil framework.
6. The braking device for an electric vehicle according to claim 1, wherein: the liquid inlet pipe is positioned on the outer side of the coil shell.
7. The braking device for an electric vehicle according to claim 1, wherein: the liquid outlet pipe is located on the outer side of the coil shell.
8. The braking device for an electric vehicle according to claim 1, wherein: the diameter of the inclined channel is smaller than that of the vertical channel.
9. The braking device for an electric vehicle according to claim 1, wherein: the guide block is an annular block.
10. The braking device for an electric vehicle according to claim 1, wherein: the liquid inlet and the liquid outlet are arranged in a staggered manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011337744.4A CN112440962B (en) | 2020-11-24 | 2020-11-24 | Electric automobile arresting gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011337744.4A CN112440962B (en) | 2020-11-24 | 2020-11-24 | Electric automobile arresting gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112440962A CN112440962A (en) | 2021-03-05 |
| CN112440962B true CN112440962B (en) | 2021-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011337744.4A Active CN112440962B (en) | 2020-11-24 | 2020-11-24 | Electric automobile arresting gear |
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| CN (1) | CN112440962B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2580216Y (en) * | 2002-11-04 | 2003-10-15 | 肖树清 | Electromagnetic valve cooled by water spray for automobile |
| CN101994839B (en) * | 2009-08-10 | 2012-10-03 | 浙江三花股份有限公司 | Electric control valve |
| CN102294998B (en) * | 2011-09-01 | 2013-12-04 | 东风汽车股份有限公司 | Unloading valve with cooling and automatic sewage draining device |
| KR101326827B1 (en) * | 2011-12-08 | 2013-11-11 | 주식회사 대철 | Drain valve apparatus and air seperation thereof |
| US20160298763A1 (en) * | 2015-04-09 | 2016-10-13 | Bendix Commercial Vehicle Systems Llc | Piston assembly for an unloader valve of an air compressor |
| CN109386641B (en) * | 2018-11-28 | 2020-02-14 | 北京理工大学 | Oil-cooled heat dissipation electromagnetic valve of automatic transmission and heat dissipation method |
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2020
- 2020-11-24 CN CN202011337744.4A patent/CN112440962B/en active Active
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