CN104527438B - Non-contact united retarding brake system of new energy commercial vehicle - Google Patents
Non-contact united retarding brake system of new energy commercial vehicle Download PDFInfo
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- CN104527438B CN104527438B CN201410749944.9A CN201410749944A CN104527438B CN 104527438 B CN104527438 B CN 104527438B CN 201410749944 A CN201410749944 A CN 201410749944A CN 104527438 B CN104527438 B CN 104527438B
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Abstract
The invention relates to a non-contact united retarding brake system of a new energy commercial vehicle. The non-contact united retarding brake system comprises a regenerative brake unit, an eddy brake unit, a united brake system controller and a brake control handle, wherein the regenerative brake unit and the eddy brake unit are arranged on a transmission shaft for wheels, and the regenerative brake unit, the eddy brake unit and the brake control handle are respectively connected with the united brake system controller. The non-contact united retarding brake system can provide enough brake torque, can effectively protect a power battery and can serve as an auxiliary brake system for the new energy commercial vehicle, and brake heat fading of the vehicle under the working conditions of long-time downhill and frequent brake is avoided.
Description
Technical field
The present invention relates to the EBA in a kind of new energy commercial car, and in particular to a kind of new energy commercialization Chefei
Contact combines retarder brake system.
Background technology
New energy vehicle quickly grows in China, and pure electric vehicle, motor vehicle driven by mixed power and fuel-cell vehicle are in China
Many areas applied.Regenerative braking is one of more common auxiliary braking mode of miniature hybrid power passenger car, then
The kinetic energy of vehicle can be transformed into the energy storage that can be stored when vehicle is braked for raw braking, can be effectively improved again
The capacity usage ratio and distance travelled of new energy vehicle.At present, Regenerative Braking Technology is obtained on miniature hybrid power passenger car
Preferable application, and the following bottle existed in commercial car field, the scheme for directly being charged the battery using motor regenerative braking
Neck problem： 1）The type selecting of the motor during entire vehicle design and matching cannot often take into account reliability during using motor braking；
2）The characteristic of motor causes its brake force that cannot under all conditions of operation export stabilization； 3）The relatively low power density limit of battery
The braking power of regenerative braking is made；4）The relatively low energy density of battery defines the braking time of regenerative braking.
For the bottleneck problem of above-mentioned commercial car regenerative braking, it be all due to being reduced required for auto in Braking to sum up
Energy it is excessively huge, vehicle-mounted electrical system cannot be totally converted as electric energy, therefore tends to handle much researchs more
The unnecessary energy in this part transforms into the energy of other forms, and existing disclosed major technique has：Hydraulic energy-accumulating formula, flywheel energy storage
The schemes such as formula.Hydraulic system has the big advantage of energy density, but due to needing to install complicated hydraulic system additional, this is to vehicle
Layout Problem and the cost control installed propose many problems, and the program is primarily adapted for use in the special vehicle of hydraulic-driven
Or military vehicle, comparatively structure is relatively simple for fly wheel system, but costly.Although additionally, the studies above can be from certain
Kind of degree solves to move recoverable problem, but reliability and stability to automobile brake does not propose effective solution route.
For enhancing new-energy automobile brake when reliability and stability, currently existing scheme mostly be by regenerative braking device with
Friction braking system is combined, and this mode can to a certain extent solve the problems, such as regenerative braking reliability and stability,
But for the commercial car of heavier mass, during at it, frequently braking or long-time are slow, friction catch is inevitable
Generation heat fading phenomenon, the tragedy that vehicle occurs brake fade due to friction catch heat fading be can be found everywhere, and this is being ensured
While braking reliability and stability, the braking heat resistanceheat resistant decline performance for strengthening mixed powered car is also particularly important.
Eddy-current brake is a technology for maturation, is widely used in the EBA of conventional truck, and its is basic
Principle is：During metal flat cambered surface relative motion, in its surface sense production current vortex, current vortex again with magnetic fields and produce
Raw braking moment so that automobile carries out slow or braking.The characteristics of current vortex braking is maximum is contactless braking, it is to avoid
The rapid deterioration of the brake(-holder) block caused by friction in traditional braking, eliminates brake oil, it is to avoid environmental pollution, greatly improves
The security of running car, comfortableness and economy, reduce the fatigue of driver, improve operating efficiency, reduce and bring to a halt.
The content of the invention
For existing technical problem, the present invention provides a kind of new energy commercial car contactless joint retarder brake system
System, the system can provide enough braking moments, can be effectively protected electrokinetic cell, can prevent heat fading, the Braking system mistake
Journey is reliable, stabilization, energy-conservation.
In order to solve above-mentioned technical problem, the present invention provides a kind of contactless joint retarder brake of new energy commercial car
System, including regenerative brake unit, eddy-current brake unit, associated braking system controller control unit and control for brake handle,
Regenerative brake unit and eddy-current brake unit are each provided on the power transmission shaft of wheel, and regenerative brake unit includes entire car controller, electricity
Machine controller, motor, electrokinetic cell and battery condition sensor, battery condition sensor are used to measure the SOC value of electrokinetic cell,
Eddy-current brake unit includes eddy-current brake controller, rotor disk, coil brace, magnet exciting coil and temperature sensor, TEMP
Device is used to measure the temperature of air gap between magnet exciting coil and rotor disk, and the electric current of magnet exciting coil is produced by motor regenerative braking, is made
Dynamic joystick, battery condition sensor, temperature sensor, entire car controller and eddy-current brake controller connect joint system respectively
Dynamic system controller.
Described associated braking system controller can distribute regeneration system by real-time battery SOC signal and temperature signal
The braking power of moving cell and eddy-current brake unit.
Described described electrokinetic cell is powered for eddy-current brake unit.
The priority of the contactless joint retarder brake system of described new energy commercial car is less than anti-wheel lock system
Priority.
The beneficial effects of the invention are as follows：
By the cooperation of regenerative brake unit, eddy-current brake unit, associated braking system controller and control for brake handle
Enough braking moments can be provided, the workload that eddy-current brake unit has been shared for regenerative brake unit is effectively protected
Electrokinetic cell, eddy-current brake unit is also effectively prevented heat fading, and braking procedure of the invention is reliable, stabilization, energy-conservation.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is signal flow diagram of the invention.
Fig. 3 is control flow chart of the invention.
Fig. 4 is the interface circuit schematic diagram of associated braking system controller of the invention.
Fig. 5 is the flow chart that calculating brake-power balance coefficient of the invention is calculated.
In figure：1- regenerative brake units；2- entire car controllers；3- electric machine controllers；4- motors；5- electrokinetic cells；6- electricity
Pond state sensor；7- associated braking system controllers；8- eddy-current brake controllers；9- eddy-current brake units；10- rotor disks；
11- coil braces；12- magnet exciting coils；13- temperature sensors；14- power transmission shafts；15- main reducing gears；16- driving wheels；17- is braked
Joystick；18- air gaps.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of contactless joint retarder brake system of new energy commercial car, including regenerative brake unit 1,
Eddy-current brake unit 9, associated braking system controller 7 and control for brake handle 17, described regenerative brake unit 1 are new energy
The brake unit often having on automobile, the complemental brake system that described eddy-current brake unit 9 often has for traditional power automobile, at this
In invention, described regenerative brake unit 1 and eddy-current brake unit 9 is each provided at the power transmission shaft 14 of new energy commercial car driving wheel 16
On, the braking moment that the counter electromotive force of motor 4 is produced with eddy-current brake unit 9 in automobile brake is subtracted by power transmission shaft 14 and master
Fast device 15 is delivered on driving wheel 16, is realized to the slow of automobile or braking；Described regenerative brake unit 1 includes full-vehicle control
Device 2, electric machine controller 3, motor 4, electrokinetic cell 5 and battery condition sensor 6, wherein, the connection power of battery condition sensor 6
Battery 5, the SOC value for measuring energy storage battery 5；Described eddy-current brake unit 9 includes eddy-current brake controller 8, rotor disk
10th, coil brace 11, magnet exciting coil 12 and temperature sensor 13, wherein, temperature sensor 13 is arranged on rotor disk 10 and excitation
Near coil 12, the temperature for measuring air gap 18 between magnet exciting coil 12 and rotor disk 10；Control for brake handle 17, battery shape
State sensor 6, temperature sensor 13, entire car controller 2 and eddy-current brake controller 8 connect associated braking system controller respectively
7。
As shown in Figures 2 and 3, associated braking system controller 7 confirms system according to the gear signal of control for brake handle 17
Total braking power that system is provided, what the battery SOC signal and temperature sensor 13 measured according to battery condition sensor 6 were measured
The temperature signal of air gap 18, calculates brake-power balance coefficient, to regenerative brake unit 1 and the braking power of eddy-current brake unit 9
It is allocated, and respectively to entire car controller 2 and the transmission request signal of eddy-current brake cell controller 8.Entire car controller 2 is received
Request signal, it is the control signal of motor 4 to convert it into, and entire car controller 2 combines real-time SOC signals and request is believed
Number, by the control to the work quadrant of motor 4, it is possible to achieve the regenerative braking of motor 4 and reversing braking, generally, in order to
Kinetic energy is changed into electric energy and is stored by realization, reduces the heating of motor 4, and Controlling System of Blend Brake 7 need to preferentially ensure in braking
When, be that regeneration brake system distribution battery can realize the power of regenerative braking, motor 4 can under regenerative braking state work
Make, be power battery charging.After eddy-current brake cell controller 8 receives request signal, request signal conversion is turned into correspondence
Switch-on coil quantity and exciting current intensity, wherein, the electric current of magnet exciting coil 12 comes from the electricity of the regenerative braking of motor 4 generation
The electric current of stream or new-energy automobile power battery power supply, the close setting of SOC value of or electrokinetic cell 5 excessive in instantaneous braking power
During peak, eddy-current brake unit 9 can share the generated output of motor 4, on the basis of the reliability for ensureing braking, it is ensured that dynamic
The charging safety of power battery 5 and motor 4 is avoided to be operated in the operating mode of reversing braking.
Described eddy-current brake 9 is powered by new-energy automobile power battery, when associated braking system controller 7 occurs
When failure correctly cannot distribute braking moment, under the energy supply of electrokinetic cell 5, eddy-current brake unit 9 can work independently guarantor
The slow and braking of barrier automobile, and provide warning to driver.
As shown in figure 4, battery condition sensor 6 and temperature sensor 13 are respectively by analog-digital converter and Associated brake system
The input connection of system controller 7, control for brake handle 17 is connected with the input of associated braking system controller 7, joint system
The output end of dynamic system controller 7 connects the input of eddy-current brake controller 8 and entire car controller 2, eddy-current brake control respectively
The output end of device processed 8 is connected with magnet exciting coil 12, and the output end of entire car controller 2 is connected with the input of electric machine controller 3, electricity
The output end of machine controller 3 is connected with motor 4.
Fig. 5 gives the flow chart for calculating brake-power balance coefficient, and SOC signals and temperature signal are joining after analog-to-digital conversion
Data processing is carried out in conjunction brake system controller 7, first respectively by SOC signals and temperature signal obfuscation, then by mould
Paste allocation rule obtains the fuzzy value of distribution coefficient, finally by fuzzy language compiling generation distribution coefficient value, so as to complete
Distribution of the associated braking system controller 7 to regenerative brake unit 1 and the braking power of eddy-current brake unit 9.Described fuzzy point
It is fuzzy control table with rule, required data are obtained by experiment.
The priority of the system is less than the priority of the anti-wheel lock system of automobile, when automotive wheel anti-lock braking system is detectd
When measuring wheel lock up, the system exits work, i.e., no longer braked and exported braking moment.The setting of this priority can
Reached with by the setting to automotive bus system.
It should be noted that presently preferred embodiments of the present invention is the foregoing is only, rather than to technical solution of the present invention
Limit, any equivalent done to the technology of the present invention feature or accordingly improvement, still within protection scope of the present invention.
Claims (3)
1. a kind of new energy commercial car is contactless combines retarder brake system, it is characterized in that：Including regenerative brake unit, vortex
Brake unit, associated braking system controller and control for brake handle, regenerative brake unit and eddy-current brake unit are each provided at car
On the power transmission shaft of wheel, regenerative brake unit includes that entire car controller, electric machine controller, motor, electrokinetic cell and battery status are passed
Sensor, battery condition sensor is used to measure the SOC value of electrokinetic cell, and eddy-current brake unit includes eddy-current brake controller, turns
Sub-disk, coil brace, magnet exciting coil and temperature sensor, temperature sensor are used to measure air gap between magnet exciting coil and rotor disk
Temperature, the electric current of magnet exciting coil produces by motor regenerative braking, control for brake handle, battery condition sensor, TEMP
Device, entire car controller and eddy-current brake controller connect associated braking system controller, described associated braking system control respectively
Device processed can distribute the braking work of regenerative brake unit and eddy-current brake unit by real-time battery SOC signal and temperature signal
Rate.
2. new energy commercial car as claimed in claim 1 is contactless combines retarder brake system, it is characterized in that：Described is dynamic
Power battery is powered for eddy-current brake unit.
3. new energy commercial car as claimed in claim 1 is contactless combines retarder brake system, it is characterized in that：Described is new
Energy trader Chefei's contacts combine the priority of the priority less than anti-wheel lock system of retarder brake system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749944.9A CN104527438B (en) | 2014-12-10 | 2014-12-10 | Non-contact united retarding brake system of new energy commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749944.9A CN104527438B (en) | 2014-12-10 | 2014-12-10 | Non-contact united retarding brake system of new energy commercial vehicle |
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| Publication Number | Publication Date |
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| CN104527438A CN104527438A (en) | 2015-04-22 |
| CN104527438B true CN104527438B (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410749944.9A Active CN104527438B (en) | 2014-12-10 | 2014-12-10 | Non-contact united retarding brake system of new energy commercial vehicle |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2554337B (en) * | 2016-05-25 | 2019-10-02 | Jaguar Land Rover Ltd | Apparatus, system and method for braking |
| CN106627170A (en) * | 2016-12-28 | 2017-05-10 | 安徽安凯汽车股份有限公司 | Control method of double-source auxiliary braking control system for hybrid electric bus |
| CN114179623B (en) * | 2020-09-15 | 2023-07-07 | 宇通客车股份有限公司 | Electric braking method and system for vehicle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7029077B2 (en) * | 2002-08-20 | 2006-04-18 | Visteon Global Technologies, Inc. | Method and apparatus for power management of a regenerative braking system |
| KR20080026440A (en) * | 2006-09-20 | 2008-03-25 | 현대자동차주식회사 | Break control method |
| DE102009006196A1 (en) * | 2009-01-27 | 2010-07-29 | Siemens Aktiengesellschaft | Powered vehicle axle |
| DE102010027348A1 (en) * | 2010-02-16 | 2011-08-18 | Magna Steyr Fahrzeugtechnik Ag & Co Kg | Method and control / regulation for decelerating a vehicle and vehicle |
| CN102211527B (en) * | 2010-04-10 | 2013-03-20 | 青岛东能电气有限公司 | Control method of eddy current retarder braking moment and driving controller |
| US8880259B2 (en) * | 2011-12-13 | 2014-11-04 | Chrysler Group Llc | Electric power dissipation control |
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