CN202156406U - Electric vehicle braking system capable of recovering brake energy - Google Patents
Electric vehicle braking system capable of recovering brake energy Download PDFInfo
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- CN202156406U CN202156406U CN2011202010705U CN201120201070U CN202156406U CN 202156406 U CN202156406 U CN 202156406U CN 2011202010705 U CN2011202010705 U CN 2011202010705U CN 201120201070 U CN201120201070 U CN 201120201070U CN 202156406 U CN202156406 U CN 202156406U
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Abstract
The utility model discloses an electric vehicle braking system capable of recovering brake energy, which comprises a hydraulic braking subsystem, a brake energy recovery subsystem and a vehicle control unit. The hydraulic braking subsystem comprises a braking pedal, a vacuum booster, a brake master cylinder, an oil chamber, an EVBS (electric vehicle braking system) hydraulic unit and an EVBS electronic control unit for controlling operation of the EVBS hydraulic unit, the brake energy recovery subsystem comprises a storage battery, a reversible motor controller, a motor, a transmission and a main speed reducer, and the vehicle control unit is respectively connected with the EVBS electronic control unit and the reversible motor controller. The electric vehicle braking system can realize coordinated operation by utilizing hydraulic braking and motor recovery baking, and the vehicle control unit is used for coordination control of the reversible motor controller and the EVBS electronic control unit, so that braking safety is guaranteed. The whole hydraulic unit is simple in structure, easy in batch production and consistent in braking effect and identical in braking feeling whether the electric vehicle braking system is in the recovery state or not.
Description
Technical field
The utility model relates to braking system of electric car, especially relates to a kind of braking system of electric car that braking energy reclaims that carries out.
Background technology
The sustainable development of auto-industry faces the dual-pressure of the energy and environmental protection, and countries in the world are greatly developed for this reason has zero-emission, the electronlmobil of zero pollution.Yet the once electrically-charged continual mileage of electronlmobil is far smaller than traditional fuel-engined vehicle, and this deficiency has had a strong impact on electric vehicle industrialization and promoted rapidly.
The energy that in the Motor Vehicle Braking Procedure of city operation, consumes surpasses the 40%-50% of automobile total energy consumption sometimes, and it is an important conservation measures of automobile that braking energy reclaims.Compare with the traditional combustion engine automobile; The various forms electronlmobil has increased parts such as battery and motor; When car deceleration, motor is in the generating mode of operation, and automobile is implemented braking; Reclaim braking energy and give rechargeable energy storage system (for example storage battery) or be used for vehicle-mounted annex work, for the enforcement of braking energy recovery technology provides prerequisite.Because the braking torque that motor produces can not satisfy the requirement of car load braking force; And under different battery charge states, motor speed; The braking torque that motor produces alters a great deal; So must keep hydraulic brake system, and must coordinate hydraulic braking sysgtem and unify the relation of brake energy recovering system with the normal relation of assurance total braking force and brake pedal aperture.Simultaneously; Under the premise that security is guaranteed; How guaranteeing that brake pedal has good brake feel when reclaiming the how co-ordination of brake system and EVBS system, hydraulic braking with the electrodynamic braking switching, also is a difficult point can carrying out the braking system of electric car of braking energy recovery.
Summary of the invention
In order to overcome disadvantages of background technology, the purpose of the utility model is to provide a kind of braking system of electric car (Electric Vehicle Braking System is called for short EVBS) that braking energy reclaims that carries out.
The technical scheme that the utility model adopts:
This system comprises that hydraulic braking subsystem, braking energy reclaim subsystem and entire car controller; Wherein:
Hydraulic braking subsystem: the EVBS ECU that comprises brake pedal, vacuum booster, oil cabinet, master brake cylinder, EVBS hydraulic pressure unit and the work of control EVBS hydraulic pressure unit; Brake pedal links to each other with vacuum booster; Vacuum booster links to each other with master brake cylinder; Master brake cylinder links to each other with the EVBS hydraulic pressure unit with oil cabinet respectively; The EVBS hydraulic pressure unit also is connected with EVBS ECU and four car side brakes, and the EVBS ECU connects brake switch, brake pedal position sensor and four wheel speed sensors respectively;
Braking energy reclaims subsystem: comprise storage battery, reversible electric machine controller, motor, change-speed box and main reduction gear; Motor links to each other with main reduction gear through change-speed box, and main reduction gear links to each other with left and right front vehicle wheel respectively, and the reversible electric machine controller links to each other with motor with storage battery respectively;
Entire car controller: connect EVBS ECU, reversible electric machine controller and engine controller respectively.
The EVBS hydraulic pressure unit of said hydraulic braking subsystem; First liquid outlet of its master brake cylinder links to each other with master cylinder first pressure sensor, the first switch valve input end, second switch valve input end and the first pressure charging valve input end respectively; The first switch valve mouth links to each other with the first high-speed switch valve input end with first pedal simulation energy storage respectively; The first high-speed switch valve mouth links to each other with the first oil pump input end with the first check valve mouth respectively; The first oil pump mouth links to each other with the second pressure charging valve input end with second switch valve mouth respectively through first high-tension damper; The first check valve input end links to each other with first low pressure accumulator, the first reducing valve mouth and the second reducing valve mouth respectively; The off hind wheel drg links to each other with the first pressure charging valve mouth with the first reducing valve input end respectively, and the near front wheel drg links to each other with first round cylinder pressure transducer, the second reducing valve input end and the second pressure charging valve mouth respectively; Second liquid outlet of its master brake cylinder links to each other with master cylinder second pressure sensor, the 3rd switch valve input end, the 4th switch valve input end and the 4th pressure charging valve input end respectively; The 4th switch valve mouth links to each other with the second high-speed switch valve input end with second pedal simulation energy storage respectively; The second high-speed switch valve mouth links to each other with the second oil pump input end with the second check valve mouth respectively; The second oil pump mouth links to each other with the 3rd pressure charging valve input end with the 3rd switch valve mouth respectively through second high-tension damper; The second check valve input end links to each other with second low pressure accumulator, the 3rd reducing valve mouth and the 4th reducing valve mouth; The left rear wheel drg links to each other with the 4th pressure charging valve mouth with the 4th reducing valve input end respectively, and the off front wheel drg links to each other with the second pressure of wheel braking cylinder sensor, the 3rd reducing valve input end and the 3rd pressure charging valve mouth respectively; Oil pump electrical machinery links to each other with second oil pump with first oil pump respectively.
Two pedal simulation accumulator structures in the said hydraulic braking subsystem are identical, include piston spring, ladder piston, three seal rings, piston end cap and jump rings; In EVBS hydraulic pressure unit valve piece hole, the ladder piston is installed, piston spring is installed in the hole of ladder piston small end, the other end of piston spring contacts with the mounting hole end face, and the piston end cap is installed in the big end ladder mounting hole of EVBS hydraulic pressure unit valve piece; The small end ladder mounting hole bottom of EVBS hydraulic pressure unit valve piece is the liquid in-out mouth, the logical atmosphere in big end ladder mounting hole bottom of EVBS hydraulic pressure unit valve piece; Between the large and small end of ladder piston and EVBS hydraulic pressure unit valve piece hole first, second seal ring is set respectively; Between piston end cap and EVBS hydraulic pressure unit valve piece hole the 3rd seal ring is set, piston end covers end jump ring is set.
The beneficial effect that the utlity model has is:
(1) can maximally utilise the electric motor recovery braking energy;
(2) change is less on original ABS hydraulic brake system basis, and cost is lower;
(3) hydraulic braking and electric motor recovery brake coordination control guarantees good brake feel;
(4) entire car controller is guaranteed braking safety to reversible electric machine controller and EVBS ECU co-operative control;
(5) when the electric motor recovery braking failure, hydraulic brake system still can reliable operation;
(6) whole hydraulic pressure unit is simple in structure, is easy to batch manufacturing;
(7) no matter be in partially recycled, reclaim and still not reclaim state fully, braking effect is in full accord concerning the user, brake pedal feel is basic identical.
Description of drawings
Fig. 1 is the braking system of electric car structural representation that can carry out energy recovery.
Fig. 2 is the EVBS hydraulic pressure unit scheme drawing of the utility model.
Fig. 3 is the EVBS hydraulic pressure unit pedal simulation accumulator structure figure of the utility model.
Among the figure: 101, brake pedal, 102, brake switch, 103, brake pedal position sensor, 104, vacuum booster, 105, oil cabinet; 106, master brake cylinder, 107, right front wheel, 108, the off front wheel tachogen, 109, front left wheel, 110, the near front wheel tachogen; 111, EVBS hydraulic pressure unit, 112, the EVBS ECU, 113, right rear wheel, 114, the off hind wheel tachogen, 115, left back wheel; 116, left rear wheel tachogen, 117, engine controller, 118, entire car controller, 119, the reversible electric machine controller, 120, motor; 121, storage battery, 122, change-speed box, 123, main reduction gear, 201, master cylinder first pressure sensor, 202, master cylinder second pressure sensor; 203, first switch valve, 204, the second switch valve, the 205, the 3rd switch valve, the 206, the 4th switch valve, 207, first pedal simulation energy storage; 208, first high-speed switch valve, 209, first high-tension damper, 210, first oil pump, 211, Oil pump electrical machinery, 212, second high-tension damper; 213, second oil pump, 214, second high-speed switch valve, 215, second pedal simulation energy storage, 216, first check valve, 217, second check valve; 218, first low pressure accumulator, 219, second low pressure accumulator, 220, first reducing valve, 221, first pressure charging valve; 222, second reducing valve, 223, second pressure charging valve, the 224, the 3rd reducing valve, the 225, the 3rd pressure charging valve; 226, the 4th reducing valve, 227, increase the 4th and press valve, 228, first round cylinder pressure transducer, 229, the second pressure of wheel braking cylinder sensor; 301, EVBS hydraulic pressure unit valve piece, 302, jump ring, 303, first seal ring, 304, the piston end cap, 305, second seal ring, 306, the ladder piston, the 307, the 3rd seal ring, 308, piston spring.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.
Fig. 1 is the braking system of electric car structural representation that can carry out energy recovery.This system comprises that hydraulic braking subsystem, braking energy reclaim subsystem and entire car controller 118; Wherein:
Hydraulic braking subsystem: the EVBS ECU 112 that comprises brake pedal 101, vacuum booster 104, oil cabinet 105 master brake cylinders 106, EVBS hydraulic pressure unit 111 and 111 work of control EVBS hydraulic pressure unit; Brake pedal 101 links to each other with vacuum booster 104; Vacuum booster 104 links to each other with master brake cylinder 106; Master brake cylinder 106 links to each other with EVBS hydraulic pressure unit 111 with oil cabinet 105 respectively; EVBS hydraulic pressure unit 111 also is connected with EVBS ECU 112 and four car side brakes, and EVBS ECU 112 connects brake switch 102, brake pedal position sensor 103 and four wheel speed sensors 108,110,114,116 respectively;
Braking energy reclaims subsystem: comprise storage battery 121, reversible electric machine controller 119, motor 120, change-speed box 122 and main reduction gear 123; Motor 120 links to each other with main reduction gear 123 through change-speed box 122, and main reduction gear 123 links to each other with left and right front vehicle wheel 107,109 respectively, and reversible electric machine controller 119 links to each other with motor 120 with storage battery 121 respectively;
Entire car controller 118: connect EVBS ECU 112, reversible electric machine controller 119 and engine controller 117 respectively.
Fig. 2 is the EVBS hydraulic pressure unit scheme drawing of the utility model.The EVBS hydraulic pressure unit 111 of said hydraulic braking subsystem; First liquid outlet of its master brake cylinder 106 links to each other with first pressure charging valve, 221 input ends with master cylinder first pressure sensor 201, first switch valve, 203 input ends, second switch valve 204 input ends respectively; First switch valve, 203 mouths link to each other with first high-speed switch valve, 208 input ends with first pedal simulation energy storage 207 respectively; First high-speed switch valve, 208 mouths link to each other with first oil pump, 210 input ends with first check valve, 216 mouths respectively; First oil pump, 210 mouths link to each other with second pressure charging valve, 223 input ends with second switch valve 204 mouths respectively through first high-tension damper 209; First check valve, 216 input ends link to each other with second reducing valve, 222 mouths with first low pressure accumulator 218, first reducing valve, 220 mouths respectively; The off hind wheel drg links to each other with first pressure charging valve, 221 mouths with first reducing valve, 220 input ends respectively, and the near front wheel drg links to each other with first round cylinder pressure transducer 228, second reducing valve, 222 input ends and second pressure charging valve, 223 mouths respectively; Second liquid outlet of its master brake cylinder 106 links to each other with the 4th pressure charging valve 227 input ends with master cylinder second pressure sensor 202, the 3rd switch valve 205 input ends, the 4th switch valve 206 input ends respectively; The 4th switch valve 206 mouths link to each other with second high-speed switch valve, 214 input ends with second pedal simulation energy storage 215 respectively; Second high-speed switch valve, 214 mouths link to each other with second oil pump, 213 input ends with second check valve, 217 mouths respectively; Second oil pump, 213 mouths link to each other with the 3rd pressure charging valve 225 input ends with the 3rd switch valve 205 mouths respectively through second high-tension damper 212; Second check valve, 217 input ends link to each other with the 4th reducing valve 226 mouths with second low pressure accumulator 219, the 3rd reducing valve 224 mouths; The left rear wheel drg links to each other with the 4th pressure charging valve 227 mouths with the 4th reducing valve 226 input ends respectively, and the off front wheel drg links to each other with the 3rd pressure charging valve 225 mouths with the second pressure of wheel braking cylinder sensor 229, the 3rd reducing valve 224 input ends respectively; Oil pump electrical machinery 211 links to each other with second oil pump 213 with first oil pump 210 respectively.
Fig. 3 is the EVBS hydraulic pressure unit pedal simulation accumulator structure figure of the utility model.Two pedals simulation accumulator structures in the said hydraulic braking subsystem are identical, include piston spring 308, ladder piston 306, three seal rings 305,307,303, piston end cap 304 and jump rings 302; In EVBS hydraulic pressure unit 111 valve piece holes, ladder piston 306 is installed; Piston spring 308 is installed in the hole of ladder piston 306 small ends; The other end of piston spring 308 contacts with the mounting hole end face, and piston end cap 304 is installed in the big end ladder mounting hole of EVBS hydraulic pressure unit 111 valve pieces; The small end ladder mounting hole bottom of EVBS hydraulic pressure unit 111 valve pieces is the liquid in-out mouth, the logical atmosphere in big end ladder mounting hole bottom of EVBS hydraulic pressure unit 111 valve pieces; Between the large and small end of ladder piston 306 and EVBS hydraulic pressure unit 111 valve piece holes first, second seal ring 305,307 is set respectively; Between piston end cap 304 and EVBS hydraulic pressure unit 111 valve piece holes the 3rd seal ring 303 is set, piston end cap 304 upper ends are provided with jump ring 302.
The liquid in-out mouth pressure acts on the piston spring 308 through ladder piston 307, and along with the liquid in-out mouth pressure raises or reduction, piston spring 308 is compressed or upholds, and hydraulic oil gets into or flows out pedal simulates energy storage 207,215.This pedal simulation accumulator structure is simple, and volume is little, and reliability is high.
The EVBS ECU obtains braking requirement information according to the brake pedal position sensor signal; The reversible electric machine controller obtains the maximum braking force information that motor can provide according to status signals such as storage battery, motor speeds, and said entire car controller carries out brakig force distribution according to above-mentioned information; Assign torque command for the reversible electric machine controller; Machine operation is in generating state, and the braking torque of generation is delivered on the wheel through change-speed box, main reduction gear; Produced simultaneously electric energy is fed back to storage battery through the reversible electric machine controller, realizes that braking energy reclaims.Entire car controller is issued an order to the EVBS hydraulic pressure unit through the EVBS ECU, and the control brake master cylinder pressure partly or entirely acts on the wheel.
From actuating unit action aspect, like Fig. 1, Fig. 2, shown in Figure 3, practical implementation is following:
In car running process, step on brake pedal 101, master brake cylinder 106 produces brake-pressure, through EVBS hydraulic pressure unit 111, gets into each car side brake, produces friction brake force.The pressure that obtains when master cylinder first pressure sensor and master cylinder second pressure sensor is during greater than a certain less pressure; First switch valve 203, second switch valve 204, the 3rd switch valve 205, the 4th switch valve 206 are worked under 112 instructions of EVBS ECU simultaneously; First switch valve 203 is opened, second switch valve 204 cuts out, the 3rd switch valve 205 is closed, the 4th switch valve 206 is open-minded; First pressure charging valve 221 cuts out, the 4th pressure charging valve 227 cuts out, and respectively take turns brake-pressure this moment no longer increases, and increases braking force through 120 pairs of left and right sides of motor front-wheel; The hydraulic oil of master brake cylinder 106 gets into first pedal simulation energy storage 207, second pedal simulation energy storage 215; This moment, the aperture along with brake pedal 101 increased, ladder piston 306 compression piston springs 308, and this kind structure is convenient to realize that the big pressure of low discharge changes control; When motor 120 brakings can not be satisfied brake request, first switch valve 203 was still opened, second switch valve 204 still cuts out, the 3rd switch valve 205 is still closed, the 4th switch valve 206 is still open-minded, and EVBS ECU 112 control first pressure charging valves 221 and the 4th pressure charging valve 227 are open-minded; Left and right sides trailing wheel is realized supercharging, and when need increased hydraulic braking force, EVBS ECU 112 sent left and right sides front-wheel supercharging instruction; First switch valve 203 is closed, and the 4th switch valve 206 is closed, and second switch valve 204 cuts out; The 3rd switch valve is closed; High-speed switch valve 208,214 is carried out pulse width modulation control, make Oil pump electrical machinery 211 work simultaneously, 210 work of first oil pump; Through first high-tension damper 209, second pressure charging valve 223; Realize the near front wheel supercharging, when pressure was close shown in pressure and the first round cylinder pressure transducer 228 shown in master cylinder first pressure sensor 201, second switch valve 204 was open-minded; 213 work of second Oil pump electrical machinery; Through second high-tension damper 212, the 3rd pressure charging valve 225; Realize the off front wheel supercharging, when pressure was close shown in the pressure and the second pressure of wheel braking cylinder sensor 229 shown in master cylinder second pressure sensor 202, the 3rd switch valve 205 was open-minded.When needs reduce pressure, regain brake pedal 101, master brake cylinder 106 brake-pressures reduce, and first switch valve 203, second switch valve 204, the 3rd switch valve 205, the 4th switch valve 206 return to normal; When brake pedal position sensor 103 signals during less than a less definite value, first switch valve 203 is opened, the 4th switch valve 206 is open-minded, and the residual hydraulic pressure oil in first pedal simulation energy storage 207, second pedal simulation energy storage 215 return master brake cylinder 106.
Above-mentioned braking procedure is accomplished under entire car controller 118 is coordinated; EVBS ECU 112 obtains braking requirement information according to brake pedal position sensor 103, and reversible electric machine controller 119 obtains the maximum braking force information that motor can provide according to status signals such as storage battery 121, motor 120 rotating speeds, and entire car controller 118 is according to above-mentioned information; Carry out brakig force distribution; Assign torque command for reversible electric machine controller 119, motor 120 braking torques are delivered on the wheel through change-speed box 122, main reduction gear 123; Issue an order also for simultaneously EVBS ECU 112, master brake cylinder 106 pressure partly or entirely act on the wheel through the hydraulic pressure unit 111 of EVBS.
When carrying out supercharging, it is to have good brake feel in order to ensure chaufeur that high-speed switch valve 208,214 is carried out PWM control purpose.
From the control policy aspect, utilize Fig. 1, Fig. 2, Fig. 3, practical implementation is following:
Do not take place at wheel under the situation of locking; EVBS ECU 112 is according to the size of brake pedal sensor 103 signals; Calculate the desired braking force size; And calculate each wheel hydraulic braking force size according to master cylinder first pressure sensor 201, master cylinder second pressure sensor 202, first round cylinder pressure transducer 228, the second pressure of wheel braking cylinder sensor 229; Reversible electric machine controller 119 is according to status signals such as storage battery 121, motor 120 rotating speeds simultaneously; Calculate the maximum braking force size that motor 120 provided, entire car controller 118 is analyzed, handles, is judged it after receiving desired braking force size, information such as maximum braking force size that motor 120 provided from EVBS ECU 112 and reversible electric machine controller 119; Make decisions at last, hydraulic braking force and motor 120 braking forces are redistributed.When brake pedal 101 apertures less (slight braking); The maximum braking force that motor 120 is provided can satisfy brake request; Each wheel only keeps less hydraulic braking force, is that hydraulic braking gets involved fast for when motor 120 can not satisfy brake request like this; Improve braking response speed, mainly provide braking force by motor 120 this moment; When brake pedal 101 apertures big (average braking); The maximum braking force that motor 120 is provided can not satisfy brake request; EVBS ECU 112 calculates the desired braking force size; And, calculating the size of required front and back wheel braking force according to ideal brake force distribution curve (" automobile theory " that Yu Zhisheng chief editor China Machine Press publishes), entire car controller 118 is according to above-mentioned information; Send instruction to EVBS ECU 112 and reversible electric machine controller 119 respectively; 112 pairs of front-wheel hydraulic braking force of EVBS ECU, trailing wheel hydraulic braking force are regulated, and the braking force that 119 pairs of motors 120 of reversible electric machine controller are provided is regulated, and make braking force sum that front-wheel hydraulic braking force and motor 120 provided, the two ratio of the trailing wheel hydraulic braking force allocation proportion near the ideal brake force distribution curve; When brake pedal 101 apertures very big (emergency braking), motor 120 brakings are progressively withdrawed from, and the hydraulic pressure unit 111 of EVBS ECU 112 control EVBS increases hydraulic braking force fast.
Under the situation of wheel generation locking; EVBS ECU 112 is judged the situation of wheel generation locking according to each wheel speed sensor 108,110,114,116 information, and this moment, EVBS ECU 112 carried out the front and back wheel pressure control through the hydraulic pressure unit 111 of EVBS; Reduce to take place the braking force of locking wheel; Through entire car controller 118, reversible electric machine controller 119 is sent instruction simultaneously, reduce the braking force that motor 120 is provided; Meanwhile the hydraulic pressure unit 111 of EVBS progressively increases the front-wheel hydraulic braking force.
The foregoing description is the explanation to the utility model, is not the restriction to the utility model, and any structure after simple transformation on the utility model basis all belongs to the protection domain of the utility model.
Claims (3)
1. one kind can be carried out the braking system of electric car that braking energy reclaims, and it is characterized in that: this system comprises that hydraulic braking subsystem, braking energy reclaim subsystem and entire car controller (118); Wherein:
Hydraulic braking subsystem: the EVBS ECU (112) that comprises brake pedal (101), vacuum booster (104), oil cabinet (105) master brake cylinder (106), EVBS hydraulic pressure unit (111) and control EVBS hydraulic pressure unit (111) work; Brake pedal (101) links to each other with vacuum booster (104); Vacuum booster (104) links to each other with master brake cylinder (106); Master brake cylinder (106) links to each other with EVBS hydraulic pressure unit (111) with oil cabinet (105) respectively; EVBS hydraulic pressure unit (111) also is connected with EVBS ECU (112) and four car side brakes, and EVBS ECU (112) connects brake switch (102), brake pedal position sensor (103) and four wheel speed sensors (108,110,114,116) respectively;
Braking energy reclaims subsystem: comprise storage battery (121), reversible electric machine controller (119), motor (120), change-speed box (122) and main reduction gear (123); Motor (120) links to each other with main reduction gear (123) through change-speed box (122), and main reduction gear (123) links to each other with left and right front vehicle wheel (107,109) respectively, and reversible electric machine controller (119) links to each other with motor (120) with storage battery (121) respectively;
Entire car controller (118): connect EVBS ECU (112), reversible electric machine controller (119) and engine controller (117) respectively.
2. a kind of braking system of electric car that braking energy reclaims that carries out according to claim 1; It is characterized in that: the EVBS hydraulic pressure unit (111) of said hydraulic braking subsystem; First liquid outlet of its master brake cylinder (106) links to each other with master cylinder first pressure sensor (201), first switch valve (203) input end, second switch valve (204) input end and first pressure charging valve (221) input end respectively; First switch valve (203) mouth links to each other with first high-speed switch valve (208) input end with first pedal simulation energy storage (207) respectively; First high-speed switch valve (208) mouth links to each other with first oil pump (210) input end with first check valve (216) mouth respectively; First oil pump (210) mouth links to each other with second pressure charging valve (223) input end with second switch valve (204) mouth respectively through first high-tension damper (209); First check valve (216) input end links to each other with first low pressure accumulator (218), first reducing valve (220) mouth and second reducing valve (222) mouth respectively; The off hind wheel drg links to each other with first pressure charging valve (221) mouth with first reducing valve (220) input end respectively, and the near front wheel drg links to each other with first round cylinder pressure transducer (228), second reducing valve (222) input end and second pressure charging valve (223) mouth respectively; Second liquid outlet of its master brake cylinder (106) links to each other with master cylinder second pressure sensor (202), the 3rd switch valve (205) input end, the 4th switch valve (206) input end and the 4th pressure charging valve (227) input end respectively; The 4th switch valve (206) mouth links to each other with second high-speed switch valve (214) input end with second pedal simulation energy storage (215) respectively; Second high-speed switch valve (214) mouth links to each other with second oil pump (213) input end with second check valve (217) mouth respectively; Second oil pump (213) mouth links to each other with the 3rd pressure charging valve (225) input end with the 3rd switch valve (205) mouth respectively through second high-tension damper (212); Second check valve (217) input end links to each other with second low pressure accumulator (219), the 3rd reducing valve (224) mouth and the 4th reducing valve (226) mouth; The left rear wheel drg links to each other with the 4th pressure charging valve (227) mouth with the 4th reducing valve (226) input end respectively, and the off front wheel drg links to each other with the second pressure of wheel braking cylinder sensor (229), the 3rd reducing valve (224) input end and the 3rd pressure charging valve (225) mouth respectively; Oil pump electrical machinery (211) links to each other with second oil pump (213) with first oil pump (210) respectively.
3. a kind of braking system of electric car that braking energy reclaims that carries out according to claim 2; It is characterized in that: two pedal simulation accumulator structures in the said hydraulic braking subsystem are identical, include piston spring (308), ladder piston (306), three seal rings (305,307,303), piston end cap (304) and jump ring (302); In EVBS hydraulic pressure unit (111) valve piece hole, ladder piston (306) is installed; Piston spring (308) is installed in the hole of ladder piston (306) small end; The other end of piston spring (308) contacts with the mounting hole end face, and piston end cap (304) is installed in the big end ladder mounting hole of EVBS hydraulic pressure unit (111) valve piece; The small end ladder mounting hole bottom of EVBS hydraulic pressure unit (111) valve piece is the liquid in-out mouth, the logical atmosphere in big end ladder mounting hole bottom of EVBS hydraulic pressure unit (111) valve piece; Between the large and small end of ladder piston (306) and EVBS hydraulic pressure unit (111) valve piece hole first, second seal ring (305,307) is set respectively; Between piston end cap (304) and EVBS hydraulic pressure unit (111) valve piece hole the 3rd seal ring (303) is set, piston end cap (304) upper end is provided with jump ring (302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202010705U CN202156406U (en) | 2011-06-15 | 2011-06-15 | Electric vehicle braking system capable of recovering brake energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202010705U CN202156406U (en) | 2011-06-15 | 2011-06-15 | Electric vehicle braking system capable of recovering brake energy |
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| Publication Number | Publication Date |
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| CN202156406U true CN202156406U (en) | 2012-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202010705U Expired - Lifetime CN202156406U (en) | 2011-06-15 | 2011-06-15 | Electric vehicle braking system capable of recovering brake energy |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310850A (en) * | 2011-06-15 | 2012-01-11 | 浙江亚太机电股份有限公司 | Electric vehicle braking system capable of reclaiming braking energy |
| CN104044570A (en) * | 2013-03-14 | 2014-09-17 | 福特全球技术公司 | Vehicle BRAKE SYSTEM |
| CN104108316A (en) * | 2014-04-12 | 2014-10-22 | 北京工业大学 | Electrohydraulic-combined brake control method of battery electric vehicle |
| CN104442410A (en) * | 2014-11-20 | 2015-03-25 | 北京新能源汽车股份有限公司 | Emergency braking system for electric car and control method thereof |
| CN104827917A (en) * | 2015-05-15 | 2015-08-12 | 山东交通学院 | Electro-hydraulic combined braking system with retardance braking function |
-
2011
- 2011-06-15 CN CN2011202010705U patent/CN202156406U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310850A (en) * | 2011-06-15 | 2012-01-11 | 浙江亚太机电股份有限公司 | Electric vehicle braking system capable of reclaiming braking energy |
| CN102310850B (en) * | 2011-06-15 | 2013-05-22 | 浙江亚太机电股份有限公司 | Electric vehicle braking system capable of reclaiming braking energy |
| CN104044570A (en) * | 2013-03-14 | 2014-09-17 | 福特全球技术公司 | Vehicle BRAKE SYSTEM |
| CN104044570B (en) * | 2013-03-14 | 2018-04-10 | 福特全球技术公司 | The brakes of vehicle |
| CN104108316A (en) * | 2014-04-12 | 2014-10-22 | 北京工业大学 | Electrohydraulic-combined brake control method of battery electric vehicle |
| CN104442410A (en) * | 2014-11-20 | 2015-03-25 | 北京新能源汽车股份有限公司 | Emergency braking system for electric car and control method thereof |
| CN104827917A (en) * | 2015-05-15 | 2015-08-12 | 山东交通学院 | Electro-hydraulic combined braking system with retardance braking function |
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