CN109017326B - Braking energy recovery system of electric vehicle - Google Patents
Braking energy recovery system of electric vehicle Download PDFInfo
- Publication number
- CN109017326B CN109017326B CN201810876215.8A CN201810876215A CN109017326B CN 109017326 B CN109017326 B CN 109017326B CN 201810876215 A CN201810876215 A CN 201810876215A CN 109017326 B CN109017326 B CN 109017326B
- Authority
- CN
- China
- Prior art keywords
- bridge rectifier
- phase full
- energy recovery
- positive pole
- switch
- Prior art date
- 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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- 238000011084 recovery Methods 0.000 title claims abstract description 34
- 239000003990 capacitor Substances 0.000 claims abstract description 15
- 238000004146 energy storage Methods 0.000 claims abstract description 13
- 239000012536 storage buffer Substances 0.000 claims abstract description 12
- 230000001360 synchronised effect Effects 0.000 claims abstract description 11
- 238000002955 isolation Methods 0.000 claims description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 5
- 239000000872 buffer Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- 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
- B60L7/14—Dynamic electric regenerative braking for vehicles propelled by ac motors
-
- 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
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a braking energy recovery system of an electric vehicle, which comprises a permanent magnet synchronous motor, a three-phase alternating current switch, a three-phase full-bridge rectifier and a high-voltage battery pack of an original vehicle, wherein the braking energy recovery switch, an energy storage buffer capacitor, a direct-current step-down charger and a low-voltage battery pack.
Description
Technical Field
The invention belongs to the technical field of electric vehicles, and particularly relates to an electric vehicle braking energy recovery system.
Background
Since the birth of electric vehicles, the cruising performance of the electric vehicles is always the focus of people, and besides improving the energy storage and driving modes, the braking energy recovery is a great development direction, so that a plurality of electric vehicle manufacturers develop a plurality of braking energy recovery systems for effectively improving the cruising mileage of the electric vehicles, and the electric vehicles are widely applied to the electric vehicles. However, since the braking process is a process in which the generated voltage is highest to lowest, and the instantaneous current surge is relatively large, there is a problem in that the braking energy recovery rate is low under the limitation of the manufacturing cost.
Disclosure of Invention
The invention aims to provide a braking energy recovery system of an electric vehicle, which can charge a high-voltage battery pack under high voltage, charge a low-voltage battery on the vehicle when the high-voltage battery pack is lower than the high-voltage battery pack, and realize the effect of recovering braking energy to the maximum extent.
The object of the invention is achieved in the following way: the utility model provides an electric motor car braking energy recovery system, including the permanent magnet synchronous motor of former car, high-voltage battery group, three-phase alternating current switch, three-phase full bridge rectifier, braking energy recovery switch, direct current step-down charger, keep apart charging diode and low-voltage battery jar, the terminal connection three-phase alternating current switch of permanent magnet synchronous motor, three-phase full bridge rectifier is connected to three-phase alternating current switch's output, the input negative pole of three-phase full bridge rectifier connects direct current step-down charger and the negative pole of high-voltage battery group, the output positive pole of three-phase full bridge rectifier connects the input positive pole of direct current step-down charger and the positive pole of charging isolation diode, the negative pole of charging isolation diode is connected high-voltage battery group, the output of direct current step-down charger is connected the low-voltage battery jar, braking energy recovery switch is connected to three-phase alternating current switch's control end, braking energy recovery switch's other end is connected low-voltage storage battery.
The three-phase alternating current switch consists of 3 bidirectional thyristors, and an energy storage buffer capacitor is connected between the positive electrode and the negative electrode of the output end of the three-phase full-bridge rectifier in parallel.
The invention takes the practical application of the electric vehicle as a starting point, can charge the high-voltage battery pack under high voltage, is lower than that of the high-voltage battery pack, charges the low-voltage battery pack on the vehicle, has good use effect, can recover the energy generated by braking, realizes the maximum recovery effect of the braking energy under different vehicle speeds, and has the advantages of modularized use elements, long service life, low price and reliable and durable operation. Compared with the vehicle, the electric vehicle provided with the same high-voltage battery pack can achieve the maximization of the endurance mileage due to high braking energy recovery rate.
Drawings
Fig. 1 is a schematic circuit configuration of the present invention.
Fig. 2 is a schematic circuit configuration of the dc step-down charger.
In the figure: 1. the device comprises a permanent magnet synchronous motor, a three-phase alternating current switch, a three-phase full-bridge rectifier, a braking energy recovery switch, an energy storage buffer capacitor, a direct current step-down charger, a low-voltage storage battery, a charging isolation diode, a high-voltage battery pack and a low-voltage power utilization load.
Detailed Description
Referring to fig. 1-2, an electric vehicle braking energy recovery system comprises a permanent magnet synchronous motor 1 of an original vehicle, a high-voltage battery pack 9, a three-phase alternating current switch 2, a three-phase full-bridge rectifier 3, a braking energy recovery switch 4, a direct-current step-down charger 6, an isolated charging diode 8 and a low-voltage battery 7, wherein a binding post of the permanent magnet synchronous motor 1 is connected with the three-phase alternating current switch 2, an output end of the three-phase alternating current switch 2 is connected with the three-phase full-bridge rectifier 3, an output end negative electrode of the three-phase full-bridge rectifier 3 is connected with an input end negative electrode of the direct-current step-down charger 6 and a negative electrode of the high-voltage battery pack 9, an output end of the three-phase full-bridge rectifier 3 is connected with an input end positive electrode of the direct-current step-down charger 6 and an anode of a charging isolation diode 8, an output end of the direct-current step-down charger 6 is connected with a low-voltage bottle 7, the braking energy recovery switch 4 is connected with a control end of the three-phase alternating current switch 2, and the other end of the braking energy recovery switch 4 is connected with the low-voltage bottle 7. The energy storage buffer capacitor 5 is connected between the positive electrode and the negative electrode of the output end of the three-phase full-bridge rectifier 3 in parallel, and the piezoelectric bottle 7 can be used for supplying power to low-voltage power loads 10 such as an illuminating lamp, a loudspeaker and a radio of an original vehicle.
In fig. 1, the three-phase ac switch 2 is internally composed of three independent bidirectional thyristors T1, T2, and T3, and their control ends G1, G2, and G3 are connected to the piezoelectric bottle 7 through a braking energy recovery switch 4, that is, when the piezoelectric bottle 7 supplies low-voltage dc power to the control end of the bidirectional thyristors through the energy recovery control switch 4, the bidirectional thyristors are turned on, and the electric energy emitted by the permanent magnet synchronous motor 1 is delivered to the rear.
The three-phase full-bridge rectifier 3 is a bridge rectifier circuit formed by diodes D3, D4, D5, D6, D7 and D8, and converts three-phase alternating current into direct current.
In fig. 2, the dc buck charger 6 is composed of a control chip AL1012, a large current Mo Siguan Q1, voltage stabilizing diodes D1 and D2, and filter capacitors C1, C2, C3 and C4, an inductance coil L1, and resistors R1, R2, R3, R4, R5, R6 and R7, the dc buck charger 6 is a mature dc buck charging module, a dc power of 8 to 90 v is input from a 1 terminal, a current of 12 v 20 a is output from a 3 terminal to charge the piezoelectric bottle 7, and a 2 terminal and a 4 terminal are common terminals. The direct-current step-down charger 6 can automatically adjust the output current, automatically adjust the charging current according to the voltage of the low-voltage battery 7, and has an overheat protection function.
In the normal running process of the vehicle, the three-phase alternating current switch 2 is not powered, so that the vehicle is in a closed state, and the designed braking energy recovery system has no influence on the driving system of the original vehicle.
When braking is needed during running of the vehicle, the vehicle is in a sliding state. The permanent magnet synchronous motor 1 of the original vehicle passively rotates to generate electric energy to convert the kinetic energy of the vehicle into electric energy. When a driver depresses a brake pedal to switch on a brake energy recovery switch 4, one end of the brake energy recovery switch 4 is communicated with a vehicle-mounted piezoelectric bottle 7, and the other end of the brake energy recovery switch is connected with a silicon controlled rectifier control electrode on the three-phase alternating current switch 2; the three-phase alternating current switch 2 is conducted after being electrified, electric energy emitted by the permanent magnet synchronous generator 1 of the original vehicle is communicated to the three-phase full-bridge rectifier 3, and a diode in the three-phase full-bridge rectifier 3 converts three-phase alternating current into direct current to be output and is communicated to the energy storage buffer capacitor 5; the voltage on the energy storage buffer capacitor 5 rises rapidly, and the energy storage buffer capacitor 5 is simultaneously communicated with the isolation charging diode 8 and the step-down charging module 6; when the voltage on the energy storage buffer capacitor 5 is higher than the voltage of the vehicle-mounted low-voltage electric bottle 7, the energy of the energy storage buffer capacitor 5 charges the vehicle low-voltage electric bottle 7 through the direct-current step-down charger 6, so that the effect of low-voltage energy recovery is realized;
when the voltage on the energy storage buffer capacitor 5 is continuously increased and is higher than the voltage of the high-voltage battery pack 9 of the vehicle, the charging isolation diode 8 is conducted, and the high-voltage battery pack 9 of the vehicle is charged by energy on the energy storage buffer capacitor 5 through the high-voltage charging isolation diode 8, so that the braking energy recovery effect under high voltage is realized.
The braking energy recovery system for the electric vehicle, which is designed by the invention, has good use effect, can recover the energy generated by braking, realizes the maximization of the recovery effect of the braking energy under different vehicle speeds, has modularized use elements, long service life, low price and reliable and durable operation. Compared with the vehicle, the electric vehicle provided with the same high-voltage battery pack can achieve the maximization of the endurance mileage due to high braking energy recovery rate.
Claims (1)
1. The utility model provides an electric motor car braking energy recovery system, includes permanent magnet synchronous motor (1), high voltage battery group (9) of former car, its characterized in that: the three-phase full-bridge rectifier (3), the brake energy recovery switch (4), the direct-current buck charger (6), the isolation charging diode (8) and the low-voltage capacitor (7) are arranged in addition, the wiring terminal of the permanent magnet synchronous motor (1) is connected with the three-phase alternating-current switch (2), the three-phase alternating-current switch (2) is internally composed of three groups of independent bidirectional thyristors (T1, T2 and T3), the output end of the three-phase alternating-current switch (2) is connected with the three-phase full-bridge rectifier (3), the three-phase full-bridge rectifier (3) is composed of six diodes (D3, D4, D5, D6, D7 and D8), an energy storage buffer capacitor (5) is connected between the positive pole and the negative pole of the output end of the three-phase full-bridge rectifier (3) in parallel connection with the negative pole of the direct-current buck charger (6) and the negative pole of the high-voltage battery group (9), the positive pole of the output end of the three-phase full-bridge rectifier (3) is connected with the input end of the direct-current buck charger (6) and the positive pole of the charge isolation diode (8), the positive pole of the three-phase full-bridge rectifier (3) is connected with the positive pole (8) of the output end of the three-phase full-bridge rectifier (3) and the positive pole charge buffer capacitor (9), the output of the three-phase full-bridge rectifier (3) is connected with the positive pole (6) and the negative pole (6), the other end of the brake energy recovery switch (4) is connected with a piezoelectric bottle (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810876215.8A CN109017326B (en) | 2018-08-03 | 2018-08-03 | Braking energy recovery system of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810876215.8A CN109017326B (en) | 2018-08-03 | 2018-08-03 | Braking energy recovery system of electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109017326A CN109017326A (en) | 2018-12-18 |
| CN109017326B true CN109017326B (en) | 2024-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810876215.8A Active CN109017326B (en) | 2018-08-03 | 2018-08-03 | Braking energy recovery system of electric vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN109017326B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109760525A (en) * | 2019-03-22 | 2019-05-17 | 南京晓庄学院 | A kind of electric automobile energy control system and its control method |
| CN109980762A (en) * | 2019-04-03 | 2019-07-05 | 苏州阿福机器人有限公司 | The boost type brake energy recovery circuit and recovery method of electric vehicle |
Citations (11)
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|---|---|---|---|---|
| JPH07177674A (en) * | 1992-03-06 | 1995-07-14 | Hino Motors Ltd | Brake and auxiliary power unit for automobile |
| US5712549A (en) * | 1995-03-07 | 1998-01-27 | Tenergy L.L.C. | DC Motor drive assembly having a controller/charge with regenerative braking |
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| CN104648165A (en) * | 2015-03-14 | 2015-05-27 | 浙江大学 | Automobile brake energy recovery device and segmented control method thereof |
| CN207607365U (en) * | 2017-12-04 | 2018-07-13 | 河南森源重工有限公司 | A kind of super capacitor and accumulator hybrid energy-storing system for electric vehicle |
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| CN102118051B (en) * | 2011-02-11 | 2014-03-05 | 蒋小平 | Inductor electric energy recycling device for alternating-current motor electrocar |
| TWI606670B (en) * | 2016-09-30 | 2017-11-21 | 尼克森微電子股份有限公司 | Brake energy recovery module |
| IT201600112547A1 (en) * | 2016-11-08 | 2018-05-08 | Magneti Marelli Spa | "Energy management apparatus supplied to a low voltage system of a motor vehicle including an energy recovery stage and related procedure" |
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Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07177674A (en) * | 1992-03-06 | 1995-07-14 | Hino Motors Ltd | Brake and auxiliary power unit for automobile |
| US5712549A (en) * | 1995-03-07 | 1998-01-27 | Tenergy L.L.C. | DC Motor drive assembly having a controller/charge with regenerative braking |
| CN201208904Y (en) * | 2008-03-06 | 2009-03-18 | 黄洪文 | Electric energy recovery circuit for electric bicycle braking |
| CN201887565U (en) * | 2010-11-12 | 2011-06-29 | 东风汽车股份有限公司 | Electric vehicle energy recovery system with energy storage capacitor and DC voltage stabilizer |
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| WO2014114069A1 (en) * | 2013-01-28 | 2014-07-31 | Luo Liwen | Capacitive storage-type rechargeable battery and charging device thereof |
| CN103746419A (en) * | 2013-12-30 | 2014-04-23 | 联合汽车电子有限公司 | Vehicle-mounted charger circuit |
| CN203850847U (en) * | 2014-04-23 | 2014-09-24 | 青岛海能阿尔派轨道电力设备工程科技有限公司 | High voltage AC CRH train regenerative braking energy feedback absorption utilizer |
| CN104648165A (en) * | 2015-03-14 | 2015-05-27 | 浙江大学 | Automobile brake energy recovery device and segmented control method thereof |
| CN207607365U (en) * | 2017-12-04 | 2018-07-13 | 河南森源重工有限公司 | A kind of super capacitor and accumulator hybrid energy-storing system for electric vehicle |
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Also Published As
| Publication number | Publication date |
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| CN109017326A (en) | 2018-12-18 |
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