CN201296241Y - Hydraulic energy braking and energy regeneration device for battery electric vehicle - Google Patents
Hydraulic energy braking and energy regeneration device for battery electric vehicle Download PDFInfo
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- CN201296241Y CN201296241Y CNU2008201607473U CN200820160747U CN201296241Y CN 201296241 Y CN201296241 Y CN 201296241Y CN U2008201607473 U CNU2008201607473 U CN U2008201607473U CN 200820160747 U CN200820160747 U CN 200820160747U CN 201296241 Y CN201296241 Y CN 201296241Y
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Abstract
The utility model aims at overcoming the shortcomings of the prior battery electric vehicle of energy dissipation and shorter cycle service life of storage battery caused by too large current during starting and acceleration process; and discloses a device, by which the kinetic energy during the braking process of a battery electric vehicle can be stored, and the stored energy can be released during the starting and acceleration process so as to enable the vehicle to start and accelerate to a certain speed. The device comprises a hydraulic energy/mechanical energy transmission and transformation device, a hydraulic transmission device, a hydraulic energy storage device, an over-pressure protection device of a hydraulic system, a manual pressure relief device and an electric control device. The device is installed on the battery electric vehicle so that the purposes that the cycle service life of storage battery pack of the battery electric vehicle is prolonged, the electric energy is saved and the vehicle driving range is improved are achieved.
Description
Technical field
The utility model relates to a kind of pure electric automobile braking energy regeneration device, especially a kind of hydraulic accumulation energy technology of utilizing reclaims the braking energy of pure electric automobile, and utilizes stored hydraulic pressure can make the pure electric automobile starting-up to speed restart the device of driving motor after certain speed of a motor vehicle in the starting-up to speed stage.Belong to the electric vehicle engineering field.
Background technology
The small-sized pure electric automobile that moves in the urban district forces its frequent stopping-down, starting-up to speed owing to be subjected to the restriction of numerous traffic signal lamp and crowded traffic.In order to improve rate of energy, pure electric automobile is normally taked in the braking deceleration stage electrical motor to utilize battery pack to absorb braking energy as electrical generator at present.But the battery pack large current charge in the braking procedure is the major cause of battery pack early failure.In addition, the instantaneous absorption braking energy of battery pack limited in one's ability has only 25% braking energy to be absorbed by battery pack.
The pure electric automobile starting-up to speed all is directly to adopt the mode of battery pack to the electrical motor power supply at present.And the heavy-current discharge in the starting-up to speed process is another major reason that causes the battery pack early failure.The people such as Kazuo Onda of Hispanic J.J.Esperilla and Japan were studies show that in 2006: the high current charge-discharge of storage battery, will greatly quicken the waste of power and the reduction of service life of storage battery.People's results of study such as Germany Eckhard Karden show that also electronlmobil is in accelerator, and maximum current is up to 450A.So high discharge current is very big to the life-span influence of storage battery.
Summary of the invention
The purpose of this utility model is in order to overcome the drawback of the storage battery early failure that exists in the existing pure electric automobile braking energy regeneration technology, and provide a kind of hydraulic accumulation energy method of utilizing that the kinetic energy in the pure electric automobile braking procedure is reclaimed, and can discharge stored hydraulic pressure in the starting-up to speed stage, in order to drive a kind of device of pure electric automobile.
The technical solution of the utility model is:
Described mechanical energy/hydraulic pressure can transmit and transfer device, comprises trailing wheel (or front-wheel) 1, back axle (or propons) 5, main driving axle 6, final gear 7, from transmission gear 25, power-transfer clutch 19, counter drive shaft 26, power-transfer clutch 19, counter drive shaft 28, quantitative hydraulic pump/motor 22 is formed.Final gear 7 is installed on the main driving axle 6, final gear 7 and be meshing with each other from transmission gear 25, be installed on the counter drive shaft 26 from transmission gear 25, one end of counter drive shaft 28 links to each other with pump/motor 22, power-transfer clutch 19 auxiliary connection transmission shafts 26 and counter drive shaft 28, counter drive shaft 28 is connected with pump/motor 22.
Described hydraulic actuator comprises normally closed valve 1701, normally closed valve 1702, normally closed valve 1703, check valve 13, pump/motor 22, low-pressure reservoir 14.One end of normally closed valve 1701 connects the outlet of pump/motor 22 and the oil inlet of check valve by pressure duct, and the other end connects low-pressure reservoir 14 by low pressure line.One end of normally closed valve 1702 connects the inlet of pump/motor 22 and an end of normally closed valve 1703 by pressure duct, and the other end connects low-pressure reservoir 14 by low pressure line.High pressure accumulator 3 connects an end of normally closed valve 1703 by pressure duct.
Described hydraulic efficiency pressure system over-pressure safety device comprises by pass valve 4.By pass valve 4 front ends are connected with high pressure accumulator 3 ports by pressure duct, and the rear end is connected with low-pressure reservoir 14 by low pressure line.
Described hydraulic accumulation energy device device comprises high pressure accumulator 3 and low-pressure reservoir 14.
Described manual pressure relief device comprises shutoff valve 18.One end of shutoff valve 18 is connected with high pressure accumulator 3 by pressure duct, and the other end is connected with low-pressure reservoir 14 by low pressure line.
Described electrical controller, comprise car speed sensor 27, double pole double throw 9, motor run switch 11, thyristor 15, Hall transducer 23, brake switch 31 retreats switch 34, relay 20, energy storage high pressure display lamp 36, energy storage low voltage display lamp 37, controller CPU 35 and energy storage pressure sensor 2 are formed.Car speed sensor 27 is installed on the counter drive shaft 26, and Hall transducer 23 is corresponding with the position of magnetic pole on the acceleration pedal 24, relay 20 control double pole double throws 9.Hall element 23 in the described electrical controller be installed in acceleration pedal 24 near, brake switch 31 links to each other with brake pedal 30, retreating switch 34 directly links to each other with control system CPU, aerotron 21 links to each other with control relay 20, aerotron 16 links to each other with normally closed valve 1701, aerotron 32 links to each other with normally closed valve 1702, aerotron 33 links to each other with normally closed valve 1703, control system CPU 35 is connected with relevant sensor, energy storage high pressure display lamp 36, energy storage low voltage display lamp 37, motor run switch 11 and retreat switch 34 and be installed on the instrument face plate, energy storage pressure sensor 2 is installed on the hydraulic pressure outlet valve of high pressure accumulator 3, and double pole double throw 9 and thyristor 15 are installed on the control system pcb board
The beneficial effects of the utility model:
The utility model can store the form of the kinetic energy in the pure electric automobile braking procedure with the hydraulic pressure energy, thereby avoids the waste of energy; In the starting-up to speed process, can discharge stored hydraulic pressure, make pure electric automobile accelerate to certain speed after, restart electrical motor, avoid the heavy-current discharge of storage battery, reach and prolong the purpose that storage battery recycles the life-span.
Description of drawings
Fig. 1 is a pure electric automobile energy-recuperation system schematic diagram.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1.
During vehicle operating, motor run switch 11 is closed.Power-transfer clutch 19 separates under the situation of the normal operation of vehicle, when chaufeur let slip the clutch 29, and power-transfer clutch 19 engagements.
The adjusting of running velocity is undertaken by acceleration pedal 24.The size that acceleration pedal 24 is stepped on amplitude reflects by Hall element 23.The magnitude of voltage of Hall element 23 passes to the A/D mouth of controller CPU.Controller CPU 35 is according to the conducting degree of the magnitude of voltage of Hall element 23 size control thyristor 15, the electrical current size of controlling and driving motor 8, thus reach the purpose of the control speed of a motor vehicle.
(1) operating condition that advances
When motor run switch 11 is closed, puts switch 9 and be positioned at position A when double-pole is two, power-transfer clutch 19 is in off-state, and drive motor 8 is just changeing, and vehicle operating is in forward travel state.The running velocity size of vehicle is to control by the size that acceleration pedal 24 is stepped on amplitude.
(2) fall back operating mode
(3) energy recovery operating mode
Under vehicle advances operating condition, when chaufeur release the gas pedal 24, and let slip the clutch 29 and brake pedal 30.This moment, thyristor 15 was ended, the drive current of drive motor is 0A, the proal powerful inertia of pure electric automobile is successively by trailing wheel (or front-wheel) 1, back axle (or propons) 5, reaches pump/motor 22 from transmission gear 25, counter drive shaft 26, power-transfer clutch 19, counter drive shaft 28 at main driving axle 6, final gear 7.The brake switch 31 of this moment disconnects, and controller CPU 35 makes aerotron 32 conductings, normally closed valve 1702 energisings, and the pump/motor 22 of this moment becomes pump, starts working.The normally closed valve 1702 of hydraulic oil in the low-pressure reservoir 14 through opening enters pump/motor 22, enters check valve 13, enters high pressure accumulator 3 at last.
If when the fluid pressure that energy storage is 3 li surpassed the energy storage nominal working pressure, by pass valve 4 was opened, and makes a part of high-pressure and hydraulic oil get back to low-pressure reservoir 14.
If energy storage 3 stored energy are full, the chaufeur of this moment will continue to step on brake pedal 30, and the original brake system of vehicle has absorbed braking energy, until last parking.
(4) energy discharges operating mode
Under the situation of the speed of a motor vehicle less than a certain setting value, chaufeur let slip the clutch 29, brake pedal 30 unclamps, brake switch 31 closures, power-transfer clutch 19 closures, this moment, controller CPU 35 made aerotron 33 and aerotron 16 conductings, normally closed valve 1703 and normally closed valve 1701 energisings, the normally closed valve 1701 that high-pressure and hydraulic oil is flowed through the normally closed valve 1703 opened, pump/motor 22, opened by high pressure accumulator 3 flow to low-pressure reservoir 14 at last.The pump/motor of this moment is a motor, drives electronlmobil and advances.
When the speed of a motor vehicle meets or exceeds the value of a certain setting, chaufeur release the clutch pedal 29, power-transfer clutch 19 disconnects, and controller CPU 35 makes aerotron 33 and aerotron 16 outages, and normally closed valve 1703 and normally closed valve 1701 end, and finish the starting-up to speed process.
Under astern condition, do not carry out energy recovery and energy and discharge.
(5) system's release operating mode
Under the situation of the system failure, manual unlocking shutoff valve 18, the high pressure oil that high pressure accumulator is 3 li flows back to low-pressure reservoir 14, and the pressure of hydraulic efficiency pressure system becomes 0MPa.
Claims (7)
1, pure electric automobile comprises hydraulic pressure energy/mechanical energy transmission and transfer device, hydraulic actuator, hydraulic accumulation energy device, hydraulic efficiency pressure system over-pressure safety device, manual pressure relief device and electrical controller with hydraulic storage energy brake energy regeneration device.
2, pure electric automobile according to claim 1 hydraulic storage energy brake energy regeneration device, it is characterized in that mechanical energy/hydraulic pressure can transmit and transfer device comprises final gear (7), from transmission gear (25), power-transfer clutch (19), counter drive shaft (26), power-transfer clutch (19), counter drive shaft (28), quantitative hydraulic pump/motor (22) is formed, final gear (7) is installed on the main driving axle (6), final gear (7) and be meshing with each other from transmission gear (25), be installed on the counter drive shaft (26) from transmission gear (25), one end of counter drive shaft (28) links to each other with pump/motor (22), power-transfer clutch (19) auxiliary connection transmission shaft (26) and counter drive shaft (28).
3, pure electric automobile according to claim 1 hydraulic storage energy brake energy regeneration device, it is characterized in that hydraulic actuator comprises normally closed valve (1701), normally closed valve (1702), normally closed valve (1703), check valve (13), pump/motor (22), relevant hydraulic tubing, normally closed valve (1701) is installed between the outlet of low-pressure reservoir (14) and pump/motor (22), normally closed valve (1702) is installed between the inlet of low-pressure reservoir (14) and pump/motor (22), normally closed valve (1703) is installed between the inlet of the port of high pressure accumulator (3) and pump/motor (22), and check valve (13) is installed between high pressure accumulator (3) and the pump/motor (22).
4, pure electric automobile according to claim 1 hydraulic storage energy brake energy regeneration device; it is characterized in that the hydraulic efficiency pressure system over-pressure safety device comprises by pass valve (4); by pass valve (4) front end is connected with high pressure accumulator (3) port, and the rear end is connected with low-pressure reservoir (14).
5, pure electric automobile according to claim 1 is characterized in that with hydraulic storage energy brake energy regeneration device the hydraulic accumulation energy device comprises high pressure accumulator (3) and low-pressure reservoir (14).
6, pure electric automobile according to claim 1 hydraulic storage energy brake energy regeneration device, it is characterized in that manual pressure relief device comprises shutoff valve (18), shutoff valve (18) one ends are connected with high pressure accumulator (3), and the other end is connected with low-pressure reservoir (14).
7, pure electric automobile according to claim 1 hydraulic storage energy brake energy regeneration device, it is characterized in that electrical controller comprises car speed sensor (27), double pole double throw (9), motor run switch (11), thyristor (15), Hall transducer (23), brake switch (31), retreat switch (34), relay (20), energy storage high pressure display lamp (36), energy storage low voltage display lamp (37), controller CPU (35) and energy storage pressure sensor (2) are formed, and car speed sensor (27) is installed on the counter drive shaft (26), Hall transducer (23) is corresponding with the position of magnetic pole on the acceleration pedal (24), relay (20) control double pole double throw (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201607473U CN201296241Y (en) | 2008-10-20 | 2008-10-20 | Hydraulic energy braking and energy regeneration device for battery electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201607473U CN201296241Y (en) | 2008-10-20 | 2008-10-20 | Hydraulic energy braking and energy regeneration device for battery electric vehicle |
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| Publication Number | Publication Date |
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| CN201296241Y true CN201296241Y (en) | 2009-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201607473U Expired - Fee Related CN201296241Y (en) | 2008-10-20 | 2008-10-20 | Hydraulic energy braking and energy regeneration device for battery electric vehicle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069724A (en) * | 2010-12-18 | 2011-05-25 | 桂林客车工业集团有限公司 | Electric-hydraulic hybrid pure electric automobile |
| CN103629196A (en) * | 2013-12-18 | 2014-03-12 | 哈尔滨工程大学 | Vehicle energy-saving device based on hydraulic drive system of engineering machinery |
| CN104290723A (en) * | 2014-09-17 | 2015-01-21 | 南京航空航天大学 | Automobile electric control hydraulic braking system and energy recycling method thereof |
| CN104986029A (en) * | 2015-07-29 | 2015-10-21 | 上海神舟汽车节能环保有限公司 | Pure electric city bus hybrid power system using air power for start and braking |
| CN105835851A (en) * | 2016-06-08 | 2016-08-10 | 郭新 | Pure electric public bus with intermittent energization and air energy storage |
| CN107131160A (en) * | 2017-06-30 | 2017-09-05 | 淄博润承知识产权代理有限公司 | A kind of electric automobile driving energy-storage system and electric automobile |
-
2008
- 2008-10-20 CN CNU2008201607473U patent/CN201296241Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069724A (en) * | 2010-12-18 | 2011-05-25 | 桂林客车工业集团有限公司 | Electric-hydraulic hybrid pure electric automobile |
| CN103629196A (en) * | 2013-12-18 | 2014-03-12 | 哈尔滨工程大学 | Vehicle energy-saving device based on hydraulic drive system of engineering machinery |
| CN103629196B (en) * | 2013-12-18 | 2015-09-30 | 哈尔滨工程大学 | A kind of vehicle energy-saving device based on engineering machinery hydraulic drive system |
| CN104290723A (en) * | 2014-09-17 | 2015-01-21 | 南京航空航天大学 | Automobile electric control hydraulic braking system and energy recycling method thereof |
| CN104290723B (en) * | 2014-09-17 | 2017-01-18 | 南京航空航天大学 | Automobile electric control hydraulic braking system and energy recycling method thereof |
| CN104986029A (en) * | 2015-07-29 | 2015-10-21 | 上海神舟汽车节能环保有限公司 | Pure electric city bus hybrid power system using air power for start and braking |
| CN105835851A (en) * | 2016-06-08 | 2016-08-10 | 郭新 | Pure electric public bus with intermittent energization and air energy storage |
| CN105835851B (en) * | 2016-06-08 | 2020-08-11 | 北京快知行科技有限公司 | Pure electric bus with intermittent electrification and air energy storage |
| CN107131160A (en) * | 2017-06-30 | 2017-09-05 | 淄博润承知识产权代理有限公司 | A kind of electric automobile driving energy-storage system and electric automobile |
| CN107131160B (en) * | 2017-06-30 | 2018-12-25 | 威马智慧出行科技（上海）有限公司 | A kind of electric car driving energy-storage system and electric car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20101020 |