CN201736828U - Braking energy recovery system - Google Patents
Braking energy recovery system Download PDFInfo
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- CN201736828U CN201736828U CN2009202871124U CN200920287112U CN201736828U CN 201736828 U CN201736828 U CN 201736828U CN 2009202871124 U CN2009202871124 U CN 2009202871124U CN 200920287112 U CN200920287112 U CN 200920287112U CN 201736828 U CN201736828 U CN 201736828U
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Abstract
The utility model relates to a braking energy recovery system, comprising a main controller (5), an electric generator (1) and a controller (4) thereof, a power accumulator (2) and a controller (3) thereof, an antilock system (11) and a controller (6) thereof, an auxiliary braking system (8), a vacuum booster pump (9), a brake master cylinder (10), an electronic brake pedal (7), a wheel speed sensor (12) and a pressure sensor (13). When a target braking torque (Fn) is smaller than or equal to an electric generator braking torque (Fm), the braking energy recovery system completely uses the electric generator (1) for braking and recycling braking energy. When the target braking torque (Fn) exceeds the electric generator braking torque (Fm), the exceeded braking torque (F1=Fn-Fm) is generated by the auxiliary braking system (8), and part of braking energy is recycled. In an emergency braking condition, the antilock system (11) is started to conduct antilock control and stop recycling braking energy.
Description
Technical field
Put it briefly, the utility model relates to a kind of brake energy recovering system; Specifically, the utility model relates to a kind of brake energy recovering system based on antiblock device (ABS) and auxiliary braking system (BAS).
Background technology
Along with global environment and energy problem are serious day by day, the research of hybrid vehicle has become the focus of research and development in this area.
It is a gordian technique of hybrid vehicle that braking energy reclaims, and is one of important means that reduces the hybrid vehicle fuel oil consumption.Analysis on traditional hybrid power system and test shows, braking energy reclaims can improve fuel efficiency 3.5%～7%.But show according to external document analysis, under the typical urban road conditions, the inertia energy of automobile brake consumption can reach driving engine and send 59% of gross energy, and therefore optimization and the improvement to the hybrid power brake energy recovering system can better improve automobile fuel ecomomy.
Utilize generator for electricity generation to reclaim a kind of main mode that braking energy is the hybrid vehicle recuperated energy.But, in traditional hybrid power is used, because brake system structure remains unchanged on the basis of orthodox car brake system structure, mechanical braking is also playing a role when electrical generator is braked, cause vehicle energy to become thermal energy consumption and fall, influenced the organic efficiency of braking energy greatly.
The utility model content
Thereby the purpose of this utility model is to provide a kind of brake energy recovering system in order to address the above problem.
According to first aspect of the present utility model, a kind of brake energy recovering system is provided, described brake energy recovering system comprises master controller, electrical generator, engine controller, accumulator, accumulator controller, antiblock device, antiblock device controller, auxiliary braking system, vacuum booster pump, master brake cylinder, electronic brake pedal, wheel speed sensors and pressure sensor
Wherein, described master controller, antiblock device controller, auxiliary braking system, engine controller, accumulator controller are formed communication network by the CAN bus,
Described master controller calculates the target braking force square by the aperture and the movement rate of described electronic brake pedal,
When required target braking force square is less than or equal to the mechanism of power generation kinetic moment, adopts electrical generator to brake fully, and braking energy is reclaimed;
When required target braking force square surpassed described mechanism of power generation kinetic moment, the lock torque that is exceeded was produced by auxiliary braking system, and braking energy is partially recycled;
When vehicle is in emergency braking condition, start antiblock device and carry out anti-lock control, stop braking energy simultaneously and reclaim.
As mentioned above, by auxiliary braking system hydraulic braking and generator brake are kept apart, can realize braking in various degree under the damped condition, carry out energy recovery simultaneously, that is: when the slight glancing impact of chaufeur, mainly provide braking force, and braking energy is reclaimed fully (removing loss) by motor; When the chaufeur average braking, and when surpassing motor and can provide braking force,, replenish braking by auxiliary braking system generation hydraulic brake pressure, and braking energy is partially recycled.When the chaufeur emergency braking, this moment, control policy served as preferential with the anti-lock function, and motor stops to carry out energy recovery simultaneously.
Alternatively, in aforesaid brake energy recovering system, described master controller is used for judging current rate of braking and distinguishing emergency braking and mild braking, the braking of the braking of described electrical generator and described auxiliary braking system is distributed and the recovery of control brake energy according to the angle of described electronic brake pedal and descending speed.
Alternatively, in aforesaid brake energy recovering system, described auxiliary braking system comprises vacuum booster, normally closed switch valve, oil pump, normal open switch valve, fluid reservoir and pressurized cylinder, wherein, to the space supercharging of leak free oil circuit, the active face that drives described pressurized cylinder is pushed described vacuum booster and is carried out the supercharging action by described oil pump;
By opening the action of reducing pressure of described normally closed switch valve draining;
Realize controlled brake-pressure regulation by described supercharging action and described decompression action.
Alternatively, in aforesaid brake energy recovering system, described antiblock device controller is monitored vehicle wheel rotational speed, detect the brake-pressure of each passage simultaneously and receive the target braking force instruction that described master controller sends, thereby finish controllable function by control of control anti-lock and adjusting target braking force square.
Alternatively, in aforesaid brake energy recovering system, described electrical generator can be by being connected or by the dynamic coupling device direct connection with axle drive shaft is coaxial, and carry out clutch for clutch control, carry out energy recovery at glancing impact by installing power-transfer clutch additional.
Alternatively, in aforesaid brake energy recovering system, described brake energy recovering system also comprises closed-centre system, and its form by super capacitor or battery is stored the electric energy that electrical generator produces, simultaneously to the electric weight of internal system and discharge and recharge and manage and show.
Alternatively, in aforesaid brake energy recovering system, described electronic brake pedal can characterize rate of braking and intention by potentiometer principle, the angle of photoelectric coding principle generation or the electric signal of current potential.
Alternatively, in aforesaid brake energy recovering system, described master controller, antiblock device controller, engine controller, accumulator controller and auxiliary braking system controller are all by the total wire joint of CAN.
The utility model has advantageously improved the organic efficiency of braking energy by above-mentioned brake energy recovering system.
Description of drawings
In conjunction with the accompanying drawings, to detailed description of the preferred embodiment, aforementioned and other purpose, feature and advantage of the present utility model will become very obvious according to the back.Should understand, following accompanying drawing is the illustrative purpose of tool only, and is not to be intended to limit scope of the present utility model.Among the figure:
Fig. 1 is the schematic block diagram according to the energy-recuperation system of a kind of embodiment of the utility model;
Fig. 2 is the schematic block diagram according to auxiliary braking system (BAS) in the energy-recuperation system of a kind of embodiment of the utility model.
The specific embodiment
The specific embodiment to energy-recuperation system of the present utility model is described in detail below with reference to accompanying drawings.
Fig. 1 is the schematic block diagram according to the energy-recuperation system of a kind of embodiment of the utility model.As can be seen from Figure 1, the energy-recuperation system according to a kind of embodiment of the utility model comprises master controller 5, electrical generator 1, engine controller 4, accumulator 2, accumulator controller 3, antiblock device (skid control actuator) 11, antiblock device controller 6, auxiliary braking system 8, vacuum booster pump 9, master brake cylinder 10, electronic brake pedal 7, wheel speed sensors 12 and pressure sensor 13.Certainly, described energy-recuperation system can also comprise that other device and mechanism are with the realization function corresponding.For example, it can also comprise electronic brake pedal angular transducer etc.
Also exemplarily show the annexation between above-mentioned each device among Fig. 1.Specifically, master controller 5 is connected with engine controller 4, accumulator controller 3, antiblock device controller 6, auxiliary braking system 8 by the CAN bus, and master controller 5 also is associated with electronic brake pedal 7.By this connection mode, master controller mainly is responsible for the management and the controllable function of total system, comprises functions such as the management of chaufeur braking intention (by electronic brake pedal 7), auxiliary braking system management, generator system management, energy storage management.In the vehicle operating process, master controller continues the state of detected electrons brake pedal 7, thereby judges driver intention and control according to its intention.
To introduce the function that said apparatus is risen separately respectively below.
As described above, the radical function of master controller 5 is to judge current rate of braking according to the angle of electronic brake pedal 7 and descending speed, and distinguishes emergency braking and mild braking; Braking to electrical generator 1 braking and auxiliary braking system 8 distributes; And the recovery of control brake energy.
11 pairs of vehicle wheel rotational speeds of antiblock device controller are monitored, and detect the brake-pressure of each passage simultaneously, and receive the target braking force instruction that master controller 5 sends, thereby finish controllable function by control of control anti-lock and adjusting target braking force square.
Accumulator 2 and accumulator controller 3 constitutes closed-centre systems, and it can be stored the electric energy that electrical generator produces by the form of super capacitor or battery, simultaneously to the electric weight of internal system and discharge and recharge and manage and show.
For example, master controller can by gather electronic brake pedal aperture (β) and calculating brake pedal movement rate (
), calculate the target braking force square
(wherein, 0＜k＜1 is the weight coefficient of pedal speed in the target braking force square calculates).When the required target braking force square of chaufeur (Fn) is no more than mechanism of power generation kinetic moment (Fm), adopt electrical generator to brake fully, at this moment mechanism of power generation kinetic moment Fm=Fn; When the required lock torque of chaufeur surpassed the mechanism of power generation kinetic moment, not enough braking force carried out active boost by BAS and produces the lock torque Fl=Fn-Fm that BAS produces; When vehicle is in emergency braking condition, need to start ABS and carry out anti-lock control, stop braking energy simultaneously and reclaim.Owing to need distribute accurately, need therefore that in advance electrical generator and BAS are carried out braking force and demarcate accurately system's braking force.
Like this,, calculate the required braking force size of car brakeing simultaneously,, make the maximum recovery of braking energy by the distribution and the adjusting of master controller to motor braking and hydraulic braking by the judgement of brake pedal to driver intention.In order to guarantee system safety, under the emergency braking situation, carry out the coordinated management of abs braking and motor braking simultaneously.
Fig. 2 is the schematic block diagram according to auxiliary braking system (BAS) in the energy-recuperation system of a kind of embodiment of the utility model.As can be seen from the figure, auxiliary braking system 8 comprises vacuum booster 14, normally closed switch valve 15, oil pump 16, normal open switch valve 17, fluid reservoir 18 and pressurized cylinder 19.The radical function of BAS is the control command according to master controller, and the car brakeing pressure control is arrived expected value.Its working process is: at first receive the supercharging order and the pressure target value of master controller, by to system's boost pump with into and out of the control of hydraulic fluid port, pressure is regulated.In this continuous pressure information that is installed in four detent channel of gathering of while ABS system, send to BAS by the CAN bus message, BAS adjusts according to the pressure sensor information that receives, and forms the closed loop control process.
Example 1
Be that example describes with IVECO Turin V short wheelbase version vehicle below.
In the V short wheelbase version vehicle of IVECO Turin, on original hydraulic brake system miscellaneous part basis of invariable, remove original brake pedal, make electronic brake pedal into, and install BAS assist brake system additional.Original brake piping installs pressure sensor additional between ABS outlet and four-wheel braking wheel cylinder.Coaxial electrical generator and the generator module of installing additional on original axle drive shaft, and the output of its electric signal is connected to the lithium ion battery group.Wheel speed sensors and pressure sensor are directly inserted abs controller, the electronic brake pedal output signal connects BAS and master controller respectively, simultaneously master controller, abs controller, BAS controller, engine controller and lithium ion battery group are formed communication network by the CAN bus, more than finish system authority partial sum electric part and connect.
Wherein electrical generator peak brake power square is Fm=70N.m, and the pipeline brake-pressure is up to 12Mpa, is 140N.m by calculating system's maximum braking moment.Before the system works,, need obtain relation between target braking force and pedal aperture and the pedal speed by stand test, promptly because brake pedal aperture and required braking force are nonlinear relationship
When electrical generator carries out glancing impact to be no more than its peak brake power square, electrical generator target work moment Fm=Fn, and the current moment of electrical generator can obtain by charging current i is controlled, i.e. Fm=f (i).System adopts pid control algorithm to control, and gets controlling quantity error e=f (i)-Fn, and the control system output is u (t)=kp*e (t)+1/TI ∫ e (t) dt+TD*de (t)/dt, kp wherein, and TI, TD are respectively ratio, integration, differential coefficient.
When needs replenished hydraulic braking, promptly the target braking force square was that BAS opens booster motor greater than the motor maximum braking moment.The goal pressure of BAS is Fl=Fn-Fm, receives from master controller.Current hydraulic efficiency pressure system brake-pressure Fn is from by the ABS system acquisition, and sends to BAS by the CAN bus.Pressure adopts the PID close-loop control mode, supposes that current hydraulic system pressure is Fr, gets e=Fl-Fr, then the control system output is u (t)=kp*e (t)+1/TI ∫ e (t) dt+TD*de (t)/dt, kp wherein, TI, TD are respectively ratio, integration, differential coefficient.Output is opened through often being for conversion into, normally closed valve increases, reduces pressure control current"on"time.In the process of control, because axle drive shaft has increased the lock torque of electrical generator, therefore consider preferentially to increase to replenish moment at nonpowered axle, promptly when rate of braking is little, only suitably replenish braking force at nonpowered axle.System can accuracy control antero posterior axis braking force according to four-wheel pressure sensor force value.
When emergency braking takes place, when ABS need get involved, carry out with the preferential control policy of anti-lock, do not consider that promptly braking energy reclaims, carry out anti-lock control purely.
Through the repacking of above system and the improvement of control policy, the jointly controlling of mechanical braking and motor braking when having realized car brakeing makes vehicle can reclaim braking energy with maximal efficiency under the situation that guarantees security of system.Through real vehicle road on-cycle test under the operating mode of city, this system reclaims on the basis of energy-conservation 3.5-7% at original motor vehicle driven by mixed power braking energy, can also be increased to major general nearly 5% fuel efficiency.Therefore, this system all has good prospects for application as an energy-conservation important means of new-energy automobile on new forms of energy cars such as hybrid vehicle, electronlmobil and hydrogen cell automobile.
As seen, consideration improves the orthodox car brake system, with original " pedal-＞push vacuum booster-＞push master brake cylinder to produce pressure " process change the process of " detected electrons brake pedal aperture-＞produce pressure by BAS " into by demand, by this change pedal and two processes of generation brake-pressure are separated, and can be controlled.By change traditional braking system architecture, in conjunction with generator system and closed-centre system, can promote the braking energy organic efficiency greatly, improve fuel economy.
Should be appreciated that do not changing under the situation of general plotting of the present utility model, thereby the those skilled in the art can reconfigure the one or more features in the above-mentioned embodiment of the utility model, retrofiting obtains how different embodiments; These different embodiments also will fall in the protection domain of the present utility model but undoubtedly.
Claims (7)
1. brake energy recovering system, described brake energy recovering system comprises master controller (5), electrical generator (1), engine controller (4), accumulator (2), accumulator controller (3), antiblock device (11), antiblock device controller (6), auxiliary braking system (8), vacuum booster pump (9), master brake cylinder (10), electronic brake pedal (7), wheel speed sensors (12) and pressure sensor (13)
Wherein, described master controller (5), antiblock device controller (6), auxiliary braking system (8), engine controller (4), accumulator controller (3) are formed communication network by the CAN bus,
Described master controller (5) is associated with described electronic brake pedal (7), and calculates target braking force square (Fn) by the aperture and the movement rate of described electronic brake pedal (7),
And, described brake energy recovering system is configured such that: described master controller (5) is controlled described engine controller (4) and is adopted electrical generator (1) to brake when required target braking force square (Fn) is less than or equal to mechanism of power generation kinetic moment (Fm), and this moment, braking energy was recovered to accumulator (2); When required target braking force square (Fn) surpassed described mechanism of power generation kinetic moment (Fm), described master controller (5) control auxiliary braking system (8) produced the lock torque (Fl=Fn-Fm) that is exceeded, at this moment partially recycled braking energy; Described master controller (5) starts antiblock device and carries out anti-lock control when vehicle is in emergency braking condition, has stopped the braking energy recovery this moment.
2. brake energy recovering system as claimed in claim 1, it is characterized in that described master controller (5) is used for judging current rate of braking and distinguishing emergency braking and mild braking, the braking of the braking of described electrical generator (1) and described auxiliary braking system (8) is distributed and the recovery of control brake energy according to the angle of described electronic brake pedal (7) and descending speed.
3. brake energy recovering system as claimed in claim 1, it is characterized in that, described auxiliary braking system (8) comprises vacuum booster (14), normally closed switch valve (15), oil pump (16), normal open switch valve (17), fluid reservoir (18) and pressurized cylinder (19), and is configured to: described oil pump can be pushed described vacuum booster and carry out the supercharging action space supercharging of leak free oil circuit and the active face that drives described pressurized cylinder; The decompression action is undertaken by opening described normally closed switch valve draining; Described supercharging action and described decompression action can realize controlled brake-pressure regulation.
4. brake energy recovering system as claimed in claim 1, it is characterized in that, described antiblock device controller (11) is configured to: described anti-lock braking controller (11) can be monitored vehicle wheel rotational speed, detects the brake-pressure of each passage simultaneously and receives described master controller (5) thereby the target braking force that sends instruction control anti-lock control and adjusting target braking force square.
5. brake energy recovering system as claimed in claim 1, it is characterized in that, described electrical generator (1) can be by being connected or by the dynamic coupling device direct connection with axle drive shaft is coaxial, and carry out clutch for clutch control, carry out energy recovery at glancing impact by installing power-transfer clutch additional.
6. brake energy recovering system as claimed in claim 1, it is characterized in that, described brake energy recovering system also comprises closed-centre system, and its form by super capacitor or battery is stored the electric energy that electrical generator produces, simultaneously to the electric weight of internal system and discharge and recharge and manage and show.
7. brake energy recovering system as claimed in claim 1 is characterized in that, described electronic brake pedal (7) is constructed to be permeable to characterize rate of braking and intention by potentiometer principle, the angle of photoelectric coding principle generation or the electric signal of current potential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202871124U CN201736828U (en) | 2009-12-31 | 2009-12-31 | Braking energy recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202871124U CN201736828U (en) | 2009-12-31 | 2009-12-31 | Braking energy recovery system |
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| CN201736828U true CN201736828U (en) | 2011-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202871124U Expired - Lifetime CN201736828U (en) | 2009-12-31 | 2009-12-31 | Braking energy recovery system |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166961A (en) * | 2011-03-31 | 2011-08-31 | 北京汽车新能源汽车有限公司 | AT (automatic transmission)-based pure electric automobile brake energy recovery control system and method thereof |
| CN103459186A (en) * | 2011-02-14 | 2013-12-18 | 雷诺股份公司 | System and method for braking a hybrid or electric traction vehicle |
| CN103795179A (en) * | 2012-10-30 | 2014-05-14 | 王艳 | Blade electric vehicle-used liquid cooling type high efficient technological motor (TM) with brake assist |
| CN104309489A (en) * | 2014-09-27 | 2015-01-28 | 奇瑞汽车股份有限公司 | System and method for controlling regenerative brake device of electric vehicle |
| CN104460662A (en) * | 2014-12-15 | 2015-03-25 | 福建省福工动力技术有限公司 | Electric vehicle compound braking energy recovery test stand |
| CN106627538A (en) * | 2016-11-25 | 2017-05-10 | 航天重型工程装备有限公司 | Electric-hydraulic composite braking system |
| CN107336609A (en) * | 2017-07-01 | 2017-11-10 | 合肥东玖电气有限公司 | A kind of electricity saving and energy saving electric vehicle system |
| CN108528454A (en) * | 2018-03-30 | 2018-09-14 | 吉利汽车研究院（宁波）有限公司 | Method for recovering brake energy, brake energy recovering system and vehicle |
| CN108583566A (en) * | 2018-03-30 | 2018-09-28 | 吉利汽车研究院（宁波）有限公司 | Method for recovering brake energy and system for hybrid vehicle |
| CN108656956A (en) * | 2017-03-27 | 2018-10-16 | 杭州长江汽车有限公司 | Electric vehicle brake method, system and electric vehicle |
| CN109130872A (en) * | 2017-06-28 | 2019-01-04 | 天津市松正电动汽车技术股份有限公司 | A kind of new-energy automobile electric brake control method |
| CN109795326A (en) * | 2019-01-28 | 2019-05-24 | 汉腾汽车有限公司 | Hydrogen cell automobile brake energy recovering system and its method for recovering brake energy |
| CN111348022A (en) * | 2019-12-31 | 2020-06-30 | 昆山市兴利车辆科技配套有限公司 | Automobile vacuum boosting system and method thereof |
| CN113147414A (en) * | 2021-02-25 | 2021-07-23 | 潍柴动力股份有限公司 | Vehicle braking force control method, device and equipment and vehicle |
| CN117183751A (en) * | 2023-11-07 | 2023-12-08 | 华侨大学 | Safe and efficient regenerative braking system, control method and electric wheel type engineering machinery |
-
2009
- 2009-12-31 CN CN2009202871124U patent/CN201736828U/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103459186A (en) * | 2011-02-14 | 2013-12-18 | 雷诺股份公司 | System and method for braking a hybrid or electric traction vehicle |
| CN103459186B (en) * | 2011-02-14 | 2016-06-01 | 雷诺股份公司 | For braking the system and method for a kind of hybrid power or electric traction vehicle |
| CN102166961A (en) * | 2011-03-31 | 2011-08-31 | 北京汽车新能源汽车有限公司 | AT (automatic transmission)-based pure electric automobile brake energy recovery control system and method thereof |
| CN103795179A (en) * | 2012-10-30 | 2014-05-14 | 王艳 | Blade electric vehicle-used liquid cooling type high efficient technological motor (TM) with brake assist |
| CN103795179B (en) * | 2012-10-30 | 2016-12-21 | 毕节添钰动力科技股份有限公司 | The liquid-cooled efficient TM motor of pure electric automobile strap brake power-assisted |
| CN104309489A (en) * | 2014-09-27 | 2015-01-28 | 奇瑞汽车股份有限公司 | System and method for controlling regenerative brake device of electric vehicle |
| CN104460662A (en) * | 2014-12-15 | 2015-03-25 | 福建省福工动力技术有限公司 | Electric vehicle compound braking energy recovery test stand |
| CN106627538A (en) * | 2016-11-25 | 2017-05-10 | 航天重型工程装备有限公司 | Electric-hydraulic composite braking system |
| CN108656956A (en) * | 2017-03-27 | 2018-10-16 | 杭州长江汽车有限公司 | Electric vehicle brake method, system and electric vehicle |
| CN109130872A (en) * | 2017-06-28 | 2019-01-04 | 天津市松正电动汽车技术股份有限公司 | A kind of new-energy automobile electric brake control method |
| CN107336609A (en) * | 2017-07-01 | 2017-11-10 | 合肥东玖电气有限公司 | A kind of electricity saving and energy saving electric vehicle system |
| CN108583566A (en) * | 2018-03-30 | 2018-09-28 | 吉利汽车研究院（宁波）有限公司 | Method for recovering brake energy and system for hybrid vehicle |
| CN108528454A (en) * | 2018-03-30 | 2018-09-14 | 吉利汽车研究院（宁波）有限公司 | Method for recovering brake energy, brake energy recovering system and vehicle |
| CN109795326A (en) * | 2019-01-28 | 2019-05-24 | 汉腾汽车有限公司 | Hydrogen cell automobile brake energy recovering system and its method for recovering brake energy |
| CN111348022A (en) * | 2019-12-31 | 2020-06-30 | 昆山市兴利车辆科技配套有限公司 | Automobile vacuum boosting system and method thereof |
| CN113147414A (en) * | 2021-02-25 | 2021-07-23 | 潍柴动力股份有限公司 | Vehicle braking force control method, device and equipment and vehicle |
| CN117183751A (en) * | 2023-11-07 | 2023-12-08 | 华侨大学 | Safe and efficient regenerative braking system, control method and electric wheel type engineering machinery |
| CN117183751B (en) * | 2023-11-07 | 2024-04-16 | 华侨大学 | Safe and efficient regenerative braking system, control method and electric wheel type engineering machinery |
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Granted publication date: 20110209 |