CN106555834A - A kind of magneto-rheological vibration damper for electric motor car - Google Patents

A kind of magneto-rheological vibration damper for electric motor car Download PDF

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Publication number
CN106555834A
CN106555834A CN201710039642.6A CN201710039642A CN106555834A CN 106555834 A CN106555834 A CN 106555834A CN 201710039642 A CN201710039642 A CN 201710039642A CN 106555834 A CN106555834 A CN 106555834A
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China
Prior art keywords
cylinder body
heat pipe
piston
thermal cycle
magneto
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CN201710039642.6A
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Chinese (zh)
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CN106555834B (en
Inventor
杨静
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Wuxi Hansen New Energy Technology Co., Ltd
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杨静
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Priority to CN201710510595.9A priority Critical patent/CN107061600B/en
Priority to CN201710039642.6A priority patent/CN106555834B/en
Priority to CN201710509534.0A priority patent/CN107237856B/en
Publication of CN106555834A publication Critical patent/CN106555834A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/53Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/535Magnetorheological [MR] fluid dampers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/3292Sensor arrangements

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The invention discloses a kind of magneto-rheological vibration damper for electric motor car.Which includes:Cylinder body, cover plate, piston, piston rod, the cylinder body are made up of the first cylinder body, magnet exciting coil, heat pipe, the second cylinder body, also including temperature sensor, current regulation unit, thermal cycle component, controller.The viscosity of magnetic flow liquid in shock absorber can in real time, effectively be corrected by the present invention, the damping capacity of shock absorber is kept exactly.

Description

A kind of magneto-rheological vibration damper for electric motor car
Technical field
The invention belongs to automotive suspension technical field, more particularly to a kind of magneto-rheological vibration damper for electric motor car.
Background technology
Due to the characteristic of motor, the acceleration of electric motor car is significantly better than regular fuel car.However, excessive starting Acceleration can also cause to jump (being commonly called as " new line ") phenomenon on automotive front end seriously, therefore electric motor car needs subtract more more preferable than fuel vehicle Shake system.The characteristics of magneto-rheological vibration damper is with its simple structure, quick regulation, good damping result, is applied to electricity more and more On motor-car.Magnetic flow liquid therein is a kind of dispersion material being made up of soft magnetism suspended phase, organic suspension medium and additive Material, in the presence of powering up magnetic force outside, its viscosity can continuously, rapidly, reversibly adjust.But piston is produced when moving back and forth Higher temperature, and solenoid heat for producing when being powered, can cause the viscosity of magnetic flow liquid that desaturation occurs, and severe cold Thickening in the viscosity for magnetic flow liquid being also resulted in using bad border (such as the winter of northern China) there is.Either desaturation or thick Change, can all affect the damping capacity of magnetic flow liquid, make the damping property of whole vehicle suspension fall flat (partially soft or inclined Firmly), so as to deteriorating driving experience.
The content of the invention
It is to solve the above problems, the invention provides a kind of magneto-rheological vibration damper for electric motor car, described magnetorheological to subtract The device that shakes includes:Cylinder body, which is one end closing, the cylindrical shape of another end opening;Cover plate, which seals up the opening of the cylinder body End;Piston, in the chamber of cylinder body;Piston rod, its one end are connected to piston, and the other end passes through the cover plate and extends; Magnetic flow liquid, is filled in the chamber of cylinder body;
The external diameter of the piston is slightly less than the internal diameter of cylinder body, to form the interchannel circulated with having damping for magnetic flow liquid Gap;
Characterized in that, the cylinder body includes:
First cylinder body, which is located at innermost layer, is made up of the material of high permeability high thermal conductivity;
Magnet exciting coil, its outer surface uniformly around the close blind end located at first cylinder body;
Heat pipe, thin copper pipe of the heat pipe for flat, and there is in managing rifling, for causing the heat exchange in pipe Medium also produces autorotation in circulation in addition to along heat pipe translation under the guiding of rifling, so can be with as far as possible Little flow/flow velocity reaches expected heat exchange effect, so as to reduce the power needed for thermal cycle component, reducing energy consumption;It is described Heat pipe closes on the outer surface that excitation wire is enclosed the land, is unevenly set around first cylinder body, corresponding to piston stroke The external side surface portions of first cylinder body at middle part, heat pipe densely winding, in the sparsely winding of remainder heat pipe, due to The stage casing of piston stroke is the concentration section of the generated heat of piston acting, and such winding can be in guarantee heat exchange effect Under the premise of, shorten the length of heat pipe, reduces cost as much as possible.
Second cylinder body, its described first cylinder body of parcel, is made up of resin material hot-working;
Temperature sensor, on the inner face of the piston, for detecting the work temperature of the magnetic flow liquid in real time Degree;
Current regulation unit, adjusts according to control signal and comes from power supply, the electric current of supply magnet exciting coil, to adjust excitation The magnetic field that coil is produced, so as to adjust the damping capacity of magnetic flow liquid;
Thermal cycle component, which is fluidly connected to the heat pipe, and is circulated in heat pipe according to control signal regulation Heat-exchange medium flow;
Controller, its signal are connected to the temperature sensor, the current regulation unit and the thermal cycle component, and It is configured to:When the operating temperature is higher than first predetermined value, thermal cycle component is controlled, make to circulate in the heat friendship in heat pipe Change the flow increase of medium;When the operating temperature is less than second predetermined value, control electric current adjustment unit makes supply excitation wire The electric current of circle reduces.
Preferably, the controller is additionally configured to:Receive the road section information from in-vehicle navigation apparatus, the section letter Breath characterizes the jam situation of current driving road, if the more congestion of the road of current driving, even if the operating temperature is not yet First predetermined value is risen to, controller also opens the thermal cycle component.
Preferably, often higher than 1 percentage point of first predetermined value, controller control thermal cycle component makes stream to the operating temperature The flow for passing through the heat-exchange medium in heat pipe increases 1 percentage point;The operating temperature is often less than second predetermined value 1 hundred Branch, controller control electric current adjustment unit make the electric current of supply magnet exciting coil reduce 1 percentage point.
Preferably, the heat pipe is, by round thin copper pipe, Jing after reversing processing and form rifling, then to flatten prepared.
By the magneto-rheological vibration damper of the present invention, the viscosity of magnetic flow liquid in shock absorber can in real time, be effectively corrected, The damping capacity of shock absorber is kept exactly, is optimized the damping property of car load, is improved driving experience.
Description of the drawings
Fig. 1 shows composition structural representation of the invention;
Fig. 2 shows the structural representation of cylinder body of the invention;
Fig. 3 shows the simulation curve figure of magnetic flow liquid operating temperature of the invention.
Specific embodiment
Below in conjunction with specific embodiment, the structure and the work(realized of the magneto-rheological vibration damper of the present invention are described in detail Energy.
As shown in figure 1, the magneto-rheological vibration damper for electric motor car includes:Cylinder body 1, which is one end closing, another end opening Cylindrical shape;Cover plate 2, which seals up the openend of the cylinder body;Piston 3, in the chamber of cylinder body;Piston rod 4, its one end Piston 3 is connected to, the other end passes through the cover plate 2 and extends;The inner chamber of cylinder body 1 is divided into cavity 5 and cavity 7 by piston 3, Magnetic flow liquid is filled in the chamber of cylinder body 1, and the external diameter of piston 3 is slightly less than the internal diameter of cylinder body 1, defines path clearance 6, interchannel Gap 6 causes 7 UNICOM of cavity 5 and cavity.Due to the aperture of path clearance 6 it is less, magnetic flow liquid when the path clearance 6 is flowed through, Path clearance 6 can produce damping.
Also include, the temperature sensor 8 on the inner face of piston 3, which is used to detect the magnetic flow liquid in real time Operating temperature;Current regulation unit 10, adjusts according to control signal and comes from power supply (not shown), the electricity of supply magnet exciting coil Stream, to adjust the magnetic field of magnet exciting coil generation, so as to adjust the damping capacity of magnetic flow liquid;Thermal cycle component 11, which is fluidly Heat pipe is connected to, and the flow of the heat-exchange medium circulated in heat pipe is adjusted according to control signal;
Controller 9, its signal are connected to the temperature sensor 8, the current regulation unit 10 and the thermal cycle group Part 11.
As shown in Fig. 2 shown cylinder body 1 includes the first cylinder body 12, which is located at innermost layer, by the material of high permeability high thermal conductivity Material, for example ferrotungsten is made;Second cylinder body 13, its described first cylinder body 12 of parcel, is made up of resin material hot-working;
Magnet exciting coil 14, its outer surface uniformly around the close blind end located at first cylinder body 12;This area , it is apparent that magnet exciting coil 14 will draw one section to be connected on external power source (not shown), fairlead can be for technical staff Reserve out in the hot procedure of two cylinder bodies.
Heat pipe 15, thin copper pipe of the heat pipe 15 for flat, and there is in managing rifling, heat pipe 15 is by round Thin copper pipe, Jing after reversing processing and form rifling, then flattens prepared.The presence of rifling so that the heat-exchange medium in pipe is in circulation When in addition to along heat pipe translation, autorotation can be also produced under the guiding of rifling, so can with flow as little as possible/ Flow velocity reaches expected heat exchange effect, so as to reduce the power needed for thermal cycle component, reducing energy consumption;In the same manner, this area skill Art personnel, it is apparent that heat pipe 15 will draw one section to be connected on 11 (not shown) of thermal cycle component, equally may be used by fairlead Reserve out in the hot procedure of the second cylinder body.
The heat pipe 15 closes on magnet exciting coil 14, and is unevenly set around the outer surface of first cylinder body, institute State inequality to refer to ground winding:In the external side surface portions of first cylinder body of the middle part L2 corresponding to piston stroke L1, heat pipe 13 densely windings, and in the sparsely winding of remainder heat pipe, this is because the stage casing of piston stroke is piston acting producing The concentration zones of heat amount, such winding on the premise of heat exchange effect is ensured, can shorten the length of heat pipe as much as possible, Reduces cost.
The heat pipe 15 is fluidly connected to thermal cycle component 11, is as known to those skilled, thermal cycle Component includes but is not limited to the Common parts such as heat pump, flow valve.
Controller 9, its signal are connected to the temperature sensor 8, the current regulation unit 10 and the thermal cycle group Part 11, and be configured to:When the operating temperature not yet rises to first predetermined value, the thermal cycle component is not turned on, when When the operating temperature is higher than first predetermined value, thermal cycle component is opened;When the operating temperature is less than second predetermined value, control Current regulation unit processed, reduces the electric current of supply magnet exciting coil;Preferably, the operating temperature is higher than often first predetermined value 1 percentage point, controller control thermal cycle component makes the flow for circulating in the heat-exchange medium in heat pipe increase 1 percentage Point;The operating temperature is often less than 1 percentage point of second predetermined value, and controller control electric current adjustment unit makes supply magnet exciting coil Electric current reduce 1 percentage point.
As shown in figure 3, when heat pipe, thermal cycle component are stayed out of, magnetic flow liquid was rapidly heated within t0 to the t1 periods, Intensification now is not negative, but can improve the activity of the magnetic material in magnetic flow liquid, makes up to optimal work Make state;After optimum working temperature is reached, due to piston workmanship, magnet exciting coil heating so that the work temperature of magnetic flow liquid Degree continues to heat up (as shown in phantom in FIG.), although the speed for now heating up is little compared to t0 to the t1 periods, liter now Temperature will bring the deterioration of magnetic flow liquid property, therefore, the control heat pipe of controller 9, thermal cycle component were intervened at the t1 moment.By Simulation curve can be seen, after intervention, the operating temperature of magnetic flow liquid can be substantially remained in the range of optimum working temperature (such as It is shown in solid in figure).The t0 moment refers to the moment that shock absorber is started working, and the t0 moment temperature of corresponding magnetic flow liquid is Initial temperature;The t1 moment refers to that magnetic flow liquid reaches the moment of optimum working temperature, and the optimum working temperature is aforementioned First predetermined value.
The controller 9 is additionally configured to:Receive the road section information from in-vehicle navigation apparatus (not shown), the section The jam situation of information representation current driving road, if the more congestion of the road of current driving, it is thus evident that vehicle can be repeated multiple times Ground stop-go, that is to say, that the work load of the vibration insulating system of vehicle can increase, now t0 to the t1 period interior temperatures of shock absorber The speed for rising can accelerate (slope of curve becomes big), it is therefore desirable to thermal cycle component prior involvement.Namely controller 9 is in the work When temperature not yet rises to first predetermined value, the thermal cycle component is switched on.
One skilled in the art would recognize that without departing substantially from as the spirit and scope of the invention for describing in general manner, Various changes and/or modification can be carried out to the invention illustrated in each specific embodiment.Therefore, in terms of all For, embodiment here is considered as illustrative and not determinate.Equally, the present invention includes any feature Combination, the especially combination of any feature in Patent right requirement, even if the combination of this feature or feature is not in patent It is explicitely stated in claim or each embodiment here.

Claims (4)

1. a kind of magneto-rheological vibration damper for electric motor car, the magneto-rheological vibration damper include:Cylinder body, which is one end closing, another The cylindrical shape of one end open;Cover plate, which seals up the openend of the cylinder body;Piston, in the chamber of cylinder body;Piston rod, Its one end is connected to piston, and the other end passes through the cover plate and extends;Magnetic flow liquid, is filled in the chamber of cylinder body;It is described The external diameter of piston is slightly less than the internal diameter of cylinder body, to form the path clearance circulated with having damping for magnetic flow liquid;
Characterized in that, the cylinder body includes:
First cylinder body, which is located at innermost layer, is made up of the material of high permeability high thermal conductivity;
Magnet exciting coil, its outer surface uniformly around the close blind end located at first cylinder body;
Heat pipe, thin copper pipe of the heat pipe for flat, and there is in managing rifling so that the heat-exchange medium in pipe is in stream When logical in addition to along heat pipe translation, also autorotation is produced under the guiding of rifling;The heat pipe close on excitation wire enclose the land, The outer surface of first cylinder body is set around unevenly, in the outside table of first cylinder body at the middle part corresponding to piston stroke Face part, heat pipe densely winding, in the sparsely winding of remainder heat pipe.
Second cylinder body, its described first cylinder body of parcel, is made up of resin material hot-working;
Temperature sensor, on the inner face of the piston, for detecting the operating temperature of the magnetic flow liquid in real time;
Current regulation unit, adjusts according to control signal and comes from power supply, the electric current of supply magnet exciting coil, to adjust magnet exciting coil The magnetic field of generation, so as to adjust the damping capacity of magnetic flow liquid;
Thermal cycle component, which is fluidly connected to the heat pipe, and the heat circulated in heat pipe is adjusted according to control signal The flow of the medium of exchange;
Controller, its signal are connected to the temperature sensor, the current regulation unit and the thermal cycle component, and are matched somebody with somebody It is set to:When the operating temperature not yet rises to first predetermined value, the thermal cycle component is not turned on, when the operating temperature During higher than first predetermined value, thermal cycle component is opened;When the operating temperature is less than second predetermined value, control electric current adjusts single Unit, reduces the electric current of supply magnet exciting coil.
2. magneto-rheological vibration damper as claimed in claim 1, it is characterised in that the controller is additionally configured to:Receive from The road section information of in-vehicle navigation apparatus, the road section information characterize the jam situation of current driving road, if the road of current driving Road congestion, even if then the operating temperature not yet rises to first predetermined value, controller also opens the thermal cycle component.
3. magneto-rheological vibration damper as claimed in claim 1, it is characterised in that the operating temperature is higher than often first predetermined value 1 Percentage point, controller control thermal cycle component makes the flow for circulating in the heat-exchange medium in heat pipe increase 1 percentage point; The operating temperature is often less than 1 percentage point of second predetermined value, and controller control electric current adjustment unit makes supply magnet exciting coil Electric current reduces 1 percentage point.
4. the magneto-rheological vibration damper as described in claim 1-3, it is characterised in that the processing method of the heat pipe is:With folder The two ends of the thin copper pipe of tool clamping circle, with pipe own axes as rotary shaft, one end is clockwise pivoted, and the other end is turned as counterclockwise It is dynamic, so reverse processing and rifling is formed with the inner and outer surfaces in pipe, then flatten prepared.
CN201710039642.6A 2017-01-19 2017-01-19 A kind of magneto-rheological vibration damper for electric car Active CN106555834B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201710510595.9A CN107061600B (en) 2017-01-19 2017-01-19 A kind of accurate temperature-adjusting type electric vehicle shock absorber
CN201710039642.6A CN106555834B (en) 2017-01-19 2017-01-19 A kind of magneto-rheological vibration damper for electric car
CN201710509534.0A CN107237856B (en) 2017-01-19 2017-01-19 A kind of electric vehicle shock absorber of navigation

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CN201710039642.6A CN106555834B (en) 2017-01-19 2017-01-19 A kind of magneto-rheological vibration damper for electric car

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CN201710509534.0A Division CN107237856B (en) 2017-01-19 2017-01-19 A kind of electric vehicle shock absorber of navigation
CN201710510595.9A Division CN107061600B (en) 2017-01-19 2017-01-19 A kind of accurate temperature-adjusting type electric vehicle shock absorber

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CN201710039642.6A Active CN106555834B (en) 2017-01-19 2017-01-19 A kind of magneto-rheological vibration damper for electric car
CN201710509534.0A Active CN107237856B (en) 2017-01-19 2017-01-19 A kind of electric vehicle shock absorber of navigation

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113236702A (en) * 2021-05-11 2021-08-10 中国第一汽车股份有限公司 Low-temperature compensation method and assembly of magnetorheological damper, vehicle and storage medium

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Publication number Priority date Publication date Assignee Title
CN108583194A (en) * 2018-03-13 2018-09-28 胡湘蜜 A kind of temperature coupling amendment active hydro pneumatic suspension

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CN102374255A (en) * 2010-08-05 2012-03-14 香港中文大学 Self-powered and self-sensing magnetorheological (MR) fluid damper
CN102661353A (en) * 2012-05-30 2012-09-12 石家庄铁道大学 Magnetorheological damper with convenience in assembly and disassembly of coil component
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Publication number Publication date
CN107237856A (en) 2017-10-10
CN107061600B (en) 2018-04-13
CN107237856B (en) 2018-06-01
CN107061600A (en) 2017-08-18
CN106555834B (en) 2017-12-01

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