CN110077238A - A method of improving the braking energy of electric automobiles rate of recovery - Google Patents
A method of improving the braking energy of electric automobiles rate of recovery Download PDFInfo
- Publication number
- CN110077238A CN110077238A CN201910323842.3A CN201910323842A CN110077238A CN 110077238 A CN110077238 A CN 110077238A CN 201910323842 A CN201910323842 A CN 201910323842A CN 110077238 A CN110077238 A CN 110077238A
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- Prior art keywords
- pole
- bipolar transistor
- insulated gate
- gate bipolar
- diode
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A method of the braking energy of electric automobiles rate of recovery is improved, energy conservation and new-energy automobile field are belonged to.This method realizes that increased booster circuit is made of insulated gate bipolar transistor I7, inductance L1, diode D1, switching switch S1 by the way that a booster circuit is added in existing driving major loop.In existing driving major loop, I1 is removed, the pole C of I2, I3 are no longer directly connected to power supply outside, other circuit structure connection types remain unchanged.I1 in the present invention, I2, the pole C of I3 are connected by switch S1 with positive pole after being connected with each other.The cathode of diode D1 is connect with positive pole, and anode is connected with the pole C of I7, and the pole E of I7 is connect with power cathode.Respectively with the anode and I1 of diode D1, the pole C of I2, I3 are connected at the both ends of inductance L1.When electric car low speed is braked, the present invention can be realized circuit boosting, give power battery charging, and the electric energy that motor braking generates is recovered to power battery.
Description
Technical field
It is that a kind of can be improved the braking energy of electric automobiles rate of recovery the invention belongs to energy conservation and new-energy automobile field
Method.
Background technique
Due to the dual-pressure of environment and the energy, Development of EV has become national strategy, in the central government and place
Under the active support of the government, motor, power battery and its control technology of electric vehicle have been developed rapidly, but electronic vapour
The lower problem of vehicle course continuation mileage still restricts the development of electric car.Electric car loading power battery amount is limited, power electric
Pond specific power can not meet automobile-used demand, and the course continuation mileage of electric car is limited, while environment temperature also will affect electronic vapour
The course continuation mileage of vehicle increases.
In this case, braking energy is recycled to the maximum extent, and the course continuation mileage for increasing electric car becomes automobile
The target that industry is constantly explored.
When electric car high speed is braked, the revolving speed of motor is high, and the counter electromotive force of generation is higher than the voltage of power battery, therefore
Brake energy recovery can be carried out well；When electric car low speed is braked, the revolving speed of motor is low, leads to the counter electromotive force generated
Lower than the voltage of power battery, if wanting to realize Brake energy recovery at this time, it is necessary to carry out the control of generating voltage promotion to motor
System, and the control for carrying out generating voltage promotion to motor requires the expenditure of energy, when this boosting rectifier control is certain to centainly having arrived
Degree, the energy that the energy of consumption can be recycled greater than braking, therefore electric car cannot recycle braking energy when low speed.According to system
Meter, ratio of the city vehicle travel speed in the section 0-20km/h is about 50%, and the ratio in the section 20-30km/h is about
11%, it is lower higher than ratio shared in the section of 30km/h, result in the braking recovery efficiency of electric car low in this way, to electricity
The promotion of the course continuation mileage of electrical automobile is restricted.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of novel electric vehicle braking energy back method, this method
Feature are as follows: increase a Boost circuit and a switching switch, the booster circuit in existing motor driven major loop
The low-voltage that electric system Brake energy recovery when low speed generates can be promoted to the voltage higher than power battery, realized to dynamic
The electric energy that motor braking generates is recovered to battery by the charging of power battery, final realize.
In order to achieve the above object, the technical solution adopted by the present invention is as described below:
Existing motor driven major loop is as shown in Figure 1, circuit includes: power battery E, insulated gate bipolar transistor
I1, insulated gate bipolar transistor I2, insulated gate bipolar transistor I3, insulated gate bipolar transistor I4, insulated gate bipolar
Transistor npn npn I5, insulated gate bipolar transistor I6, capacitor C1, driving motor M.The triple line of motor is connected respectively to insulated gate
On the three phase bridge that bipolar junction transistor is constituted, wherein the first phase line is connected to the pole E of I3 and the pole C of I6, the connection of the second phase line
To the pole E of I2 and the pole C of I5, third phase line attaches to the pole E of I1 and the pole C of I4.Power supply E anode respectively with I3, I2, I1
The pole E of the connection of the pole C, cathode and I4, I5, I6 connect.The both ends capacitor C1 respectively with I1, the pole E of the pole C of I2, I3 and I4, I5, I6
It is connected.The capacitor C1 uses polarity free capacitor or polarized capacitor.
A method of the braking energy of electric automobiles rate of recovery being improved, this method in existing driving major loop by adding
Enter a booster circuit to realize, the major loop that booster circuit is added is as shown in Figure 2.Increased booster circuit is by insulated gate bipolar
Transistor I7, inductance L1, diode D1, switching switch S1 composition.The circuit structure of the foregoing description removes I1, and the pole C of I2, I3 are no longer
It is directly connected to outside with power supply, other circuit structure connection types remain unchanged.The I1, I2, the pole C of I3 lead to after being connected with each other
Switch S1 is crossed to connect with positive pole.The cathode of the diode D1 is connect with positive pole, and anode is connected with the pole C of I7,
The pole E of I7 is connect with power cathode.Respectively with the anode and I1 of diode D1, the pole C of I2, I3 connect at the both ends of the inductance L1
It connects.
When electric car normal driving or high speed are braked, switch S1 is in closed state, insulated gate bipolar transistor
I7 is in off state, and inductance L1 and diode D1 are short-circuited, at this time driving major loop shown in Fig. 2 with it is shown in FIG. 1 existing
Drive major loop function identical, motor charges the battery.
When electric car is in low speed braking, switching switch S1 is in an off state, inductance L1 and diode D1 access
In circuit, insulated gate bipolar transistor I7 is in pulsed operation state, and this boost operating mode is typical Boost boosting
The low tension that motor issues can be elevated above the high-voltage electricity of power battery by operating mode, the Boost circuit being added at this time,
Realize the charging to battery.
Compared with prior art, the invention has the benefit that the revolving speed of motor is low when electric car low speed is braked, electricity
The counter electromotive force that machine generates is lower than the voltage of power battery, and booster circuit enters working condition, and circuit may be implemented to boost, thus
To power battery charging, the electric energy that motor braking generates is recovered to power battery.The present invention can be used for electric vehicle brake
Energy regenerating in the process is realized energy-saving.
Detailed description of the invention
Fig. 1 is existing electric car driving major loop schematic illustration.
Fig. 2 is to utilize the improved motor driven major loop schematic illustration of the method for the present invention.
Specific embodiment
Proposed by the present invention is a kind of method that can be improved the braking energy of electric automobiles rate of recovery, can be made using this method
Brake energy recovery is realized when electric car low speed.Fig. 2 is to drive major loop electricity using a kind of motor in electric automobile of this method
One example principles figure on road.
A kind of novel electric vehicle Brake energy recovery circuit is double by insulated gate bipolar transistor I1, insulated gate
Bipolar transistor I2, insulated gate bipolar transistor I3, insulated gate bipolar transistor I4, insulated gate bipolar transistor I5,
Insulated gate bipolar transistor I6, insulated gate bipolar transistor I7, capacitor C1, inductance L1, diode D1 and switch S1 are constituted,
Power battery E, driving motor M are constituted.
The course of work of the circuit is:
When electric car normal driving or high speed are braked, switch S1 is in closed state, insulated gate bipolar transistor
I7 is in off state, and inductance L1 and diode D1 are short-circuited, at this time driving major loop shown in Fig. 2 with it is shown in FIG. 1 existing
Drive major loop function identical.
When electric car is in low speed braking, switching switch S1 is in an off state, inductance L1 and diode D1 access
In circuit, insulated gate bipolar transistor I7 under the control of the control circuit, is in pulsed operation state, this boosting Working mould
Formula is typical Boost boost operating mode, and the low tension that motor issues can be risen to height by the Boost circuit being added at this time
In the high-voltage electricity of power battery, the charging to battery is realized.
Insulated gate bipolar transistor I1~I6 constitutes typical inverter circuit in Fig. 1 and Fig. 2, and effect is controlled in driving
Under the action of circuit processed, the direct current of power battery can be become to the operating of three-phase alternating current electric drive motor, it also can be by motor
Mechanical energy becomes direct current energy.By this part circuit and control principle oneself widely people use and know, be not belonging to this hair
Bright content, does not elaborate herein.
Embodiment described above only expresses embodiments of the present invention, and but it cannot be understood as to the invention patent
Range limitation, it is noted that for those skilled in the art, without departing from the inventive concept of the premise, also
Several modifications and improvements can be made, these are all belonged to the scope of protection of the present invention.
Claims (1)
1. a kind of method for improving the braking energy of electric automobiles rate of recovery, existing motor driven major loop includes: power battery
E, insulated gate bipolar transistor I1, insulated gate bipolar transistor I2, insulated gate bipolar transistor I3, insulated gate bipolar
Transistor I4, insulated gate bipolar transistor I5, insulated gate bipolar transistor I6, capacitor C1, driving motor M；The three of motor
Phase line be connected respectively to insulated gate bipolar transistor composition three phase bridge on, wherein the first phase line be connected to I3 the pole E and
The pole C of I6, the second phase line are connected to the pole E of I2 and the pole C of I5, and third phase line attaches to the pole E of I1 and the pole C of I4；Power supply E's
Anode is connect with the pole C of I3, I2, I1 respectively, cathode and I4, the pole the E connection of I5, I6；The both ends capacitor C1 respectively with I1, I2, I3
The pole C and I4, I5, I6 E extremely be connected, which is characterized in that this method pass through in existing motor driven major loop be added one
Booster circuit realization, specifically:
Increased booster circuit is made of insulated gate bipolar transistor I7, inductance L1, diode D1, switching switch S1；It is existing
Motor driven major loop in circuit structure remove I1, the pole C of I2, I3 are no longer directly connected to outer, other circuit structures with power supply
Connection type remains unchanged；The I1, I2, the pole C of I3 are connected by switch S1 with positive pole after being connected with each other；Described
The cathode of diode D1 is connect with positive pole, and anode is connected with the pole C of I7, and the pole E of I7 is connect with power cathode；The electricity
The both ends of L1 are felt respectively with the anode and I1 of diode D1, and the pole C of I2, I3 connect；
When electric car normal driving or high speed are braked, switch S1 is in closed state, at insulated gate bipolar transistor I7
In off state, drive major loop identical as existing driving major loop, motor charges the battery；
When electric car is in low speed braking, switching switch S1 is in an off state, and inductance L1 and diode D1 access circuit
In, insulated gate bipolar transistor I7 is in pulsed operation state, this boost operating mode for being is typical Boost boosting work
Operation mode, the low tension that motor issues can be elevated above the high-voltage electricity of power battery by the Boost circuit being added at this time, real
Now to the charging of battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910323842.3A CN110077238A (en) | 2019-04-22 | 2019-04-22 | A method of improving the braking energy of electric automobiles rate of recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910323842.3A CN110077238A (en) | 2019-04-22 | 2019-04-22 | A method of improving the braking energy of electric automobiles rate of recovery |
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| Publication Number | Publication Date |
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| CN110077238A true CN110077238A (en) | 2019-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910323842.3A Withdrawn CN110077238A (en) | 2019-04-22 | 2019-04-22 | A method of improving the braking energy of electric automobiles rate of recovery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112706613A (en) * | 2019-10-25 | 2021-04-27 | 安徽威灵汽车部件有限公司 | Drive control device and method, compressor assembly, electric vehicle, and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064591A (en) * | 2010-11-12 | 2011-05-18 | 鸥瑞智诺能源科技(北京)有限公司 | Braking energy recovery system with recovery charging current directly proportional to brake voltage variation |
| CN103625299B (en) * | 2013-12-05 | 2016-05-18 | 中国重汽集团济南动力有限公司 | A kind of double source trolleybus control system |
| CN205905801U (en) * | 2016-08-29 | 2017-01-25 | 福建万润新能源科技有限公司 | Motor direct current actuating system that braking energy retrieved |
| WO2017017214A1 (en) * | 2015-07-28 | 2017-02-02 | Koninklijke Philips N.V. | Braking energy recovery system for an electric motor and method |
| CN108162765A (en) * | 2014-12-30 | 2018-06-15 | 朱海燕 | The method for recovering brake energy of electric vehicle |
-
2019
- 2019-04-22 CN CN201910323842.3A patent/CN110077238A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064591A (en) * | 2010-11-12 | 2011-05-18 | 鸥瑞智诺能源科技(北京)有限公司 | Braking energy recovery system with recovery charging current directly proportional to brake voltage variation |
| CN103625299B (en) * | 2013-12-05 | 2016-05-18 | 中国重汽集团济南动力有限公司 | A kind of double source trolleybus control system |
| CN108162765A (en) * | 2014-12-30 | 2018-06-15 | 朱海燕 | The method for recovering brake energy of electric vehicle |
| WO2017017214A1 (en) * | 2015-07-28 | 2017-02-02 | Koninklijke Philips N.V. | Braking energy recovery system for an electric motor and method |
| CN205905801U (en) * | 2016-08-29 | 2017-01-25 | 福建万润新能源科技有限公司 | Motor direct current actuating system that braking energy retrieved |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112706613A (en) * | 2019-10-25 | 2021-04-27 | 安徽威灵汽车部件有限公司 | Drive control device and method, compressor assembly, electric vehicle, and storage medium |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190802 |
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| WW01 | Invention patent application withdrawn after publication |