CN107458203B - Motor hybrid driving system and method based on hydraulic spring energy storage device - Google Patents
Motor hybrid driving system and method based on hydraulic spring energy storage device Download PDFInfo
- Publication number
- CN107458203B CN107458203B CN201710725362.0A CN201710725362A CN107458203B CN 107458203 B CN107458203 B CN 107458203B CN 201710725362 A CN201710725362 A CN 201710725362A CN 107458203 B CN107458203 B CN 107458203B
- Authority
- CN
- China
- Prior art keywords
- energy storage
- storage device
- hydraulic
- spring
- energy
- 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.)
- Active
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 264
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims abstract description 81
- 230000005540 biological transmission Effects 0.000 claims abstract description 56
- 238000006073 displacement reaction Methods 0.000 claims abstract description 17
- 238000005491 wire drawing Methods 0.000 claims description 38
- 238000004804 winding Methods 0.000 claims description 30
- 230000001133 acceleration Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G1/00—Spring motors
- F03G1/02—Spring motors characterised by shape or material of spring, e.g. helical, spiral, coil
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a motor hybrid driving system and a driving method based on a hydraulic spring energy storage device, which belong to the field of automobile hybrid driving systems, and solve the technical problems of recovering and releasing energy in the automobile braking or starting process through a simple and easy-to-realize energy storage and release device; the hydraulic spring energy storage device comprises a hydraulic pump, a hydraulic cylinder, a fixed plate, a connecting plate, an energy storage spring and a stopping device, wherein the hydraulic pump, an oil pipe and the hydraulic cylinder are sequentially communicated to form a power transmission mechanism; a displacement sensor is arranged in a cylinder barrel of the hydraulic cylinder, and the displacement sensor, the hydraulic pump and the motor are all connected with the controller. The method comprises the steps of recovering braking energy through the energy storage state of the hydraulic spring energy storage device, and driving the vehicle body to run through the energy auxiliary motor released by the hydraulic spring energy storage device in the energy release state.
Description
Technical Field
The invention relates to the field of automobile hybrid power driving systems, in particular to a motor hybrid driving system and a motor hybrid driving method based on a hydraulic spring energy storage device.
Background
The power in the starting and running process of the vehicle is provided by the motor of the vehicle, the fuel consumption is high in the braking and starting processes of the vehicle, and the kinetic energy is lost in the form of heat energy in the braking process of the vehicle, so that the energy waste is caused.
The Chinese patent with publication number CN 104802774A published in the year 2015, 7 and 29 proposes a spiral spring based automobile brake energy recycling device, which comprises a transmission unit and a moving unit, wherein the transmission unit comprises a brake bevel gear, an acceleration bevel gear and a matched bevel gear, the brake bevel gear and the acceleration bevel gear are coaxially and mirror symmetrically arranged on a driving shaft of an automobile wheel, conical parts of the brake bevel gear and the acceleration bevel gear are oppositely arranged, a gap is reserved between the brake bevel gear and the acceleration bevel gear, and the matched bevel gear which can be respectively meshed with the brake bevel gear and the acceleration bevel gear is arranged in the gap, and the matched bevel gear realizes reciprocating motion between the brake bevel gear and the acceleration bevel gear through the moving unit. According to the technical scheme, the spiral spring is matched with the bevel gear, so that the timely switching of the recovery and release of kinetic energy is realized, the requirement on the engagement of the bevel gear is high, the bevel gear is worn after long-term use, or deviation is easily caused between gear engagement, and the recovery and release of the kinetic energy are affected.
How to recover the kinetic energy of the automobile braking process through the energy storage and release device which is simple in structure and convenient to realize and release the stored energy for assisting the starting or accelerating of the automobile is a technical problem to be solved.
Disclosure of Invention
The invention aims at the defects, and provides a motor hybrid driving system and a motor hybrid driving method based on a hydraulic spring energy storage device, which solve the problem of how to recover and release energy in the braking or starting process of an automobile through a simple and easy-to-realize energy storage and release device.
The technical task of the invention is realized in the following way:
the motor hybrid driving system based on the hydraulic spring energy storage device comprises a motor, a storage battery, a controller and a driving shaft, wherein the storage battery is connected with the motor, the motor can drive the driving shaft to rotate, the motor hybrid driving system further comprises the hydraulic spring energy storage device, the hydraulic spring energy storage device comprises a hydraulic pump, a hydraulic cylinder, a fixing plate, a connecting plate, an energy storage spring and a stopping device, an output shaft of the hydraulic pump is connected with the driving shaft, a piston rod of the hydraulic cylinder is parallel to the output shaft of the hydraulic pump and is arranged back to back, an oil pipe is communicated between a cylinder barrel of the hydraulic cylinder and an oil cavity of the hydraulic pump, and the hydraulic pump, the oil pipe and the hydraulic cylinder are sequentially communicated to form a power transmission mechanism; the connecting plate is arranged at the outer end of a piston rod of the hydraulic cylinder, the axis of the piston rod of the hydraulic cylinder is perpendicular to the plate surface of the connecting plate, the fixed plate is arranged on a cylinder barrel of the hydraulic cylinder, the fixed plate is arranged opposite to the connecting plate, the energy storage spring is sleeved on the outer side of the hydraulic cylinder, the energy storage spring and the piston rod of the hydraulic cylinder are coaxially arranged and connected between the fixed plate and the connecting plate, the power transmission mechanism is matched with the rotating driving shaft to drive the energy storage spring to deform and recover braking energy, and energy released by deformation of the energy storage spring can be transmitted to the driving shaft through the power transmission mechanism; the stop device is connected with the connecting plate and can drive the energy storage spring to maintain the current deformation energy storage state; a displacement sensor is arranged in a cylinder barrel of the hydraulic cylinder and is used for detecting the position of a piston of the hydraulic cylinder; the storage battery, the displacement sensor, the hydraulic pump and the motor are all connected with the controller.
The motor drives the driving shaft to rotate, the rotating driving shaft acts on the hydraulic spring energy storage device and drives the energy storage spring in the hydraulic spring energy storage device to deform, the energy storage spring deforms and can recover braking energy, and the braking energy recovered by the hydraulic spring energy storage device can be released and acts on the driving shaft when the energy storage spring changes phase to release energy, so that the driving shaft is driven to rotate, and the recovery and the utilization of the braking energy are realized through the hydraulic spring energy storage device.
Further, the side surface of the connecting plate opposite to the hydraulic cylinder is the back surface of the connecting plate; the stop device comprises a stay wire, a winding mechanism and a stop mechanism, one end of the stay wire is connected to the back surface of the connecting plate, the other end of the stay wire is wound on the winding mechanism, and the winding mechanism can stretch and retract the stay wire in the transmission process of the power transmission mechanism; the stop mechanism is connected with the winding mechanism, and can drive the energy storage spring to maintain the current deformation energy storage state through the winding mechanism when the power transmission mechanism is stopped. When the vehicle body is parked, the energy storage state of the energy storage spring can be locked through the stopping device, and deformation energy release of the energy storage spring is prevented.
Further, the winding mechanism comprises a connecting shaft, a wire drawing disc and a coil spring, the connecting shaft is located at the back of the connecting plate, the other end of the wire drawing disc is wound on the wire drawing disc, the wire drawing disc is arranged on the connecting shaft and is in running fit with the connecting shaft, the inner end of the coil spring is arranged on the connecting shaft, the coil spring can drive the wire drawing disc to rotate through the connecting shaft, and in the transmission process of the power transmission mechanism, the coil spring, the connecting shaft and the wire drawing disc are matched to drive a wire drawing wire located between the wire drawing disc and the connecting plate to maintain a straight state.
Further, the stop mechanism comprises a driving piece and a bag brake mainly composed of a hub and a bag brake pad, the hub is arranged on the connecting shaft and is in running fit with the connecting shaft, the bag brake pad is arranged on the hub, the driving piece is connected with the bag brake pad, and the driving piece can drive the connecting shaft to stop through the bag brake.
Further, the driving member is a hand brake assembled on the vehicle body.
Further, the energy storage springs are multiple, the diameters of the energy storage springs are sequentially increased, and the energy storage springs are coaxially arranged and are sequentially sleeved on the outer side of the hydraulic cylinder.
The motor hybrid driving method based on the hydraulic spring energy storage device is characterized in that the motor hybrid driving system based on the hydraulic spring energy storage device is used for starting and driving a vehicle body to run, the hydraulic spring energy storage device comprises three working states, namely an energy storage state capable of recovering braking energy and an energy release state capable of releasing energy, the braking energy is recovered through the energy storage state of the hydraulic spring energy storage device, and the energy released by the hydraulic spring energy storage device in the energy release state assists the motor to drive the vehicle body to run.
Further, the method comprises the following working modes:
in the motor driving process, when the vehicle body accelerates, judging an energy storage value of the hydraulic spring energy storage device, if the energy storage value of the hydraulic spring energy storage device reaches a preset value, setting the hydraulic spring energy storage device to be in an energy release state, driving the vehicle body to accelerate by the energy auxiliary motor released by the hydraulic spring energy storage device, and if the energy storage value of the hydraulic spring energy storage device is lower than the preset value, setting the hydraulic spring energy storage device to be in a constant state;
and in the running process of the vehicle, when the speed of the vehicle body is greater than a preset vehicle speed, judging the energy storage value of the hydraulic spring energy storage device, if the energy storage value of the hydraulic spring energy storage device reaches a preset value, setting the hydraulic spring energy storage device to be in a constant state, and if the energy storage value of the hydraulic spring energy storage device is lower than the preset value, setting the hydraulic spring energy storage device to be in an energy storage state.
Further, the braking energy is recovered through the energy storage state of the hydraulic spring energy storage device, and the method comprises the following steps: the braking energy is transmitted to the power transmission mechanism through the rotating driving shaft, and the braking energy is transmitted to the energy storage spring through the power transmission mechanism and drives the energy storage spring to deform and store energy; the energy released by the hydraulic spring energy storage device in the energy release state assists the motor to drive the vehicle body to run, and the method comprises the following steps: the deformation of the energy storage spring converts elastic energy into kinetic energy, and the deformed energy storage spring transmits the kinetic energy to the driving shaft through the power transmission mechanism and drives the driving shaft to rotate.
Further, the method for judging the energy storage value of the hydraulic spring energy storage device comprises the following steps: the distance value between the fixed plate and the connecting plate is detected through the displacement sensor, the distance value between the fixed plate and the connecting plate is used as a standard for judging the energy storage value of the hydraulic spring energy storage device, if the distance value between the fixed plate and the connecting plate is smaller than a preset value, the energy storage value of the hydraulic spring energy storage device is lower than the preset value, and if the distance value between the fixed plate and the connecting plate reaches or exceeds the preset value, the energy storage value of the hydraulic spring energy storage device reaches the preset value.
The motor hybrid driving system and the driving method based on the hydraulic spring energy storage device have the following advantages:
1. the hydraulic spring energy storage device is used for converting braking energy into elastic energy to be stored, and the elastic energy stored in the hydraulic spring energy storage device is converted into kinetic energy and transmitted to the driving shaft in the process of accelerating or high-speed running of the vehicle body, so that the storage and utilization of energy sources are realized, and the waste of the energy sources is avoided;
2. the power transmission in the power transmission machine consisting of the hydraulic pump and the hydraulic cylinder is linear, and the energy is transmitted and recovered through the power transmission mechanism, so that the power transmission machine has the advantages of simple structure and high energy transmission efficiency;
3. the energy storage spring is used for storing energy, and has the advantages of high energy conversion efficiency, low energy loss, long service life and low cost;
4. after the energy storage spring stores energy, under the parking state, the driving piece cooperates with the brake to lock the pull wire, the energy storage spring maintains the current deformation energy storage state, so that energy loss is avoided, extrusion of liquid is avoided, and the possibility of liquid leakage is reduced.
5. The driving part adopts the hand brake, and the hand brake is a device originally assembled on the vehicle body, so that materials and resources are saved, and the control on the running state of the vehicle body is convenient to realize.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a hydraulic spring energy storage device according to embodiment 1;
FIG. 2 is a schematic view of the stop device of FIG. 1 in the A-direction;
FIG. 3 is a schematic diagram of the hydraulic spring energy storage device and the driving shaft of embodiment 1;
FIG. 4 is a block diagram of a hybrid power drive system based on hydraulic spring stored energy driving according to embodiment 1;
in the figure: 1. the hydraulic pump comprises a hydraulic pump body, wherein the hydraulic pump body comprises a hydraulic pump, an output shaft of the hydraulic pump, a hydraulic pipe, a fixed plate, a hydraulic cylinder, a cylinder barrel of the hydraulic cylinder, 6, oil, 7, a piston, 8, a piston rod of the hydraulic cylinder, 9, a connecting plate, 10, a connecting ring, 11, a stay wire, 12, a stay wire disc, 13, a connecting shaft, 14, a coil spring, 15, a hub, 16, a brake lining, 17, a hand brake line, 18, a hand brake, 19, an energy storage spring, 20, a displacement sensor, 21, a driving shaft, 22, a controller, 23, a hydraulic spring energy storage device, 24, a storage battery, 25 and a motor.
Detailed Description
The hybrid motor drive system and method based on a hydraulic spring energy storage device of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1, 2, 3 and 4, the hybrid power driving system based on hydraulic spring energy storage driving of the present invention includes a motor 25, a storage battery 24, a controller 22, a driving shaft 21 and a hydraulic spring energy storage device 23, wherein the storage battery 24 is connected with the motor 25, the motor 25 drives the driving shaft 21 to rotate, the rotating driving shaft 21 acts on the hydraulic spring energy storage device 23 and transmits braking energy to the hydraulic spring energy storage device 23, the hydraulic spring energy storage device 23 is used for recovering braking energy and converting the braking energy into elastic energy for storage through deformation, and the hydraulic spring energy storage device 23 can convert the elastic energy into kinetic energy through deformation and transmit the kinetic energy to the driving shaft 21 to assist the motor 25 when a vehicle body is accelerated or operated at high speed.
The hydraulic spring energy storage device 23 comprises a hydraulic pump 1, a hydraulic cylinder, a fixed plate 4, a connecting plate 9, an energy storage spring 19 and a stop device, wherein the hydraulic cylinder is arranged at a driving shaft 21 of a vehicle body, an output shaft of the hydraulic cylinder is connected with the driving shaft 21 of the vehicle body, the rotating driving shaft 21 can drive the output shaft of the hydraulic cylinder to rotate so as to drive oil 6 in an oil cavity of the hydraulic pump 1 to flow into a cylinder 5 of the hydraulic cylinder, a piston rod 8 of the hydraulic cylinder is arranged in parallel and opposite to the output shaft 2 of the hydraulic pump, an oil pipe 3 is communicated between the cylinder 5 of the hydraulic cylinder and the oil cavity of the hydraulic pump 1, and oil 6 is communicated in a space formed by the oil cavity of the hydraulic cylinder, the oil pipe 3 and the piston 7 and the cylinder 5 of the hydraulic cylinder, and the hydraulic pump 1, the oil pipe 3 and the hydraulic cylinder are sequentially communicated to form a power transmission mechanism; the connecting plate 9 is arranged at the outer end of a piston rod 8 of the hydraulic cylinder, the axis of the piston rod 8 of the hydraulic cylinder is perpendicular to the plate surface of the connecting plate 9, the fixed plate 4 is arranged on a cylinder 5 of the hydraulic cylinder, the fixed plate 4 and the connecting plate 9 are oppositely arranged, two energy storage springs 19 with different diameters are sequentially sleeved on the outer side of the hydraulic cylinder, and the two energy storage springs 19 are coaxially arranged with the piston rod 8 of the hydraulic cylinder and are connected between the fixed plate 4 and the connecting plate 9; the power transmission mechanism can transmit kinetic energy along the expansion and contraction direction of the piston rod 8 of the hydraulic cylinder, and can drive the two energy storage springs 19 to deform through the connecting plate 9, the deformation of the energy storage springs 19 can convert the kinetic energy into elastic energy for storing energy, and meanwhile, the energy storage springs 19 can convert the stored elastic energy into the kinetic energy through the deformation and transmit the kinetic energy to the driving shaft 21 through the power transmission mechanism; the stop device is connected with the connecting plate 9, and can drive the energy storage spring 19 to maintain the current deformation energy storage state, so that deformation energy release of the energy storage spring 19 is avoided.
The displacement sensor 20 is arranged in the cylinder barrel 5 of the hydraulic cylinder, the displacement sensor 20 is positioned on the side wall, close to the fixed plate 4, in the cylinder barrel, the displacement sensor 20 is connected with the controller 22, the displacement sensor 20 can detect the position of the piston 7 in the hydraulic cylinder and timely transmit the position of the piston 7 to the controller 22, the distance value between the piston 7 in the hydraulic cylinder and the side wall, close to the fixed plate 4, on the cylinder barrel can be obtained through the position of the piston 7, so that the distance value between the fixed plate 4 and the connecting plate 9 is obtained, and the stretching length or the compression length of the energy storage spring 19 can be conveniently judged according to the distance value between the fixed plate 4 and the connecting plate 9, so that the energy storage value of the energy storage spring 19 can be judged.
The side surface of the connecting plate 9, which is opposite to the hydraulic cylinder, is the back surface of the connecting plate 9, the back surface of the connecting plate 9 is provided with a connecting ring 10, the stop device comprises a pull wire 11, a winding mechanism and a stop mechanism, one end of the pull wire 11 is connected to the connecting ring 10 in a winding manner, the other end of the pull wire 11 is wound on the winding mechanism, and the winding mechanism can stretch and retract the pull wire 11 in the transmission process of the power transmission mechanism; the stop mechanism is connected with the winding mechanism, and can drive the energy storage spring 19 to maintain the current deformation energy storage state through the winding mechanism when the power transmission mechanism is stopped.
In this embodiment, the winding mechanism includes a connecting shaft 13, a wire drawing disc 12 and a coil spring 14, the connecting shaft 13 is located at the back of the connecting plate 9, the other end of the wire drawing 11 is wound on the wire drawing disc 12, the wire drawing disc 12 is arranged on the connecting shaft 13 and is in running fit with the connecting shaft 13, the inner end of the coil spring 14 is arranged on the connecting shaft 13, the coil spring 14 drives the connecting shaft 13 to rotate through deformation thereof, and drives the wire drawing disc 12 to rotate through the connecting shaft 13, and in the transmission process of the power transmission mechanism, the coil spring 14, the connecting shaft 13 and the wire drawing disc 12 cooperate to drive the wire drawing 11 located between the wire drawing disc 12 and the connecting plate 9 to maintain a straight state so as to satisfy the following conditions: when the connecting plate 9 moves towards the wire drawing disc 12, the wire drawing 11 is wound on the wire drawing disc 12; when the connecting plate 9 moves towards the fixed plate 4, more stay wires 11 are released for the connecting plate 9 to move towards the fixed plate 4. The stop mechanism comprises a driving piece and a bag brake mainly composed of a hub 15 and a bag brake pad 16, wherein the hub 15 is arranged on the connecting shaft 13 and is in running fit with the connecting shaft 13, the bag brake pad 16 is arranged on the hub 15, the driving piece is connected with the bag brake pad 16, and the driving piece can drive the connecting shaft 13 to stop through the bag brake.
Specifically, the motor 25 drives the driving shaft 21 to rotate, the rotating driving shaft 21 transmits braking energy to the power transmission mechanism through the output shaft 2 of the hydraulic pump, the conduction direction between the hydraulic pump 1 and the hydraulic cylinder is that oil 6 flows from an oil cavity of the hydraulic pump 1 to the cylinder 5 of the hydraulic cylinder, the transmission direction of the power transmission mechanism is that the hydraulic pump 1 guides the hydraulic cylinder, and when the power transmission mechanism drives the two energy storage springs 19 to move in a direction away from the fixed plate 4 through the connecting plate 9, the distance between the connecting plate 9 and the wire drawing disc 12 is reduced; meanwhile, in the starting or running process of the vehicle body, the coil spring 14 deforms and drives the connecting shaft 13 to rotate, and the rotating connecting shaft 13 drives the wire drawing disc 12 to rotate, so that the wire drawing 11 is wound on the wire drawing disc 12, and the wire drawing 11 between the wire drawing disc 12 and the connecting plate 9 is ensured to be in a straight state.
The driving piece is a hand brake 18, the hand brake 18 is connected with the bag brake through a hand brake wire 17, when the vehicle body is stopped, the hand brake 18 is pulled, the hand brake wire 17 is tensioned and locks the connecting shaft 13 through the bag brake, and the wire pulling disc 12 is locked, so that the energy storage spring 19 maintains the current deformation state, and the retraction of the energy storage spring 19 is avoided.
When energy release is needed, the conduction direction between the hydraulic pump 1 and the hydraulic cylinder is that oil 6 flows from the cylinder 5 of the hydraulic cylinder to an oil cavity of the hydraulic pump 1, the transmission direction of the power transmission mechanism is that the hydraulic cylinder is guided to the hydraulic pump 1, the hand brake 18 is in a released state in the energy release process, the locking mechanism releases the locking of the connecting shaft 13, the connecting shaft 13 is in a free state, the elastic energy of the energy storage spring 19 is converted into kinetic energy, the energy storage spring 19 is retracted and drives a piston rod of the hydraulic cylinder to move towards a direction close to the fixed plate 4 through the connecting plate 9 under the driving of the kinetic energy, and the piston rod of the hydraulic cylinder is matched with the piston 7 to squeeze the oil 6 in the hydraulic cylinder into the oil cavity of the hydraulic pump 1 through the oil pipe 3, namely, the kinetic energy is transmitted to the driving shaft 21 through the power transmission mechanism, so that the recycling of the energy stored by the energy storage spring 19 is realized.
The hydraulic spring energy storage device 23 includes three working states, namely a state of keeping unchanged, an energy storage state and an energy release state, wherein the state of keeping unchanged is that the energy storage spring 19 keeps the current state, the energy storage state is that the energy storage spring 19 deforms and brake energy is recovered through deformation, and the energy release state is that the energy storage spring 19 deforms and energy is released through deformation, wherein:
in an energy storage state, the motor 25 drives the driving shaft 21 to rotate, meanwhile, the driving shaft 21 of the vehicle body drives the output shaft 2 of the hydraulic pump to rotate, oil 6 in an oil cavity of the hydraulic pump 1 is extruded into a cylinder barrel 5 of the hydraulic cylinder, so that a piston rod of the hydraulic cylinder is driven to move in a direction away from the fixed plate 4, the piston rod of the hydraulic cylinder drives the energy storage spring 19 to move in a direction away from the fixed plate 4 through the connecting plate 9, and the energy storage spring 19 stretches and deforms to generate elastic energy, namely braking energy is transmitted to the energy storage spring 19 through the power transmission mechanism and is converted into the elastic energy to be stored; when the car body is parked, the hand brake 18 is pulled, the hand brake 18 is locked, and the pulling wire coil 12 and the pulling wire 11 are locked through the connecting shaft 13, so that the energy storage spring 19 is locked, the energy storage spring 19 maintains the current deformation state to store energy, the energy loss is avoided, meanwhile, the extrusion of the oil 6 is avoided, and the leakage of the oil 6 is reduced.
The energy release state, the hand brake 18 is in an unclamped state, the locking of the connecting shaft 13 is released, the coil spring 14 and the connecting shaft 13 are in free states, the energy storage spring 19 retracts and drives the piston rod of the hydraulic cylinder to move towards the direction close to the fixed plate 4 through the connecting plate 9, the piston rod of the hydraulic cylinder is matched with the piston 7 of the hydraulic cylinder to extrude the oil 6 in the cylinder 5 of the hydraulic cylinder into an oil cavity of the hydraulic pump 1, the output shaft 2 of the hydraulic pump rotates and drives the driving shaft 21 of the vehicle body to rotate, namely, the elastic energy stored by the energy storage spring 19 is converted into kinetic energy, and the kinetic energy is transmitted and acted on the driving shaft 21 of the vehicle body through the power transmission mechanism.
The working mode of the hybrid power driving system based on hydraulic spring energy storage driving is as follows: the motor 25 acts on the driving shaft 21 and drives the driving shaft 21 to rotate, the rotating driving shaft 21 transmits braking energy to the power transmission mechanism through the rotating shaft, the power transmission mechanism drives the energy storage spring 19 to deform under the driving of the braking energy, and the energy storage spring 19 deforms to convert kinetic energy into elastic energy for storage; when the vehicle body accelerates or runs at a high speed, the energy storage spring 19 can be controlled to deform and release energy, and the energy storage spring 19 drives the power transmission mechanism to transmit towards the direction of the driving shaft 21 in the deformation process, so that the kinetic energy is transmitted to the driving shaft 21 through the power transmission mechanism, and the motor 25 is assisted to drive the driving shaft 21 to rotate. Specifically, the method comprises the following working modes:
mode one: during the driving process of the motor 25, when the vehicle body accelerates, judging the energy storage value of the hydraulic spring energy storage device 23, if the energy storage value of the hydraulic spring energy storage device 23 reaches a preset value, setting the hydraulic spring energy storage device 23 to be in an energy release state, driving the vehicle body to accelerate by the energy released by the hydraulic spring energy storage device 23 through the auxiliary motor 25, and if the energy storage value of the hydraulic spring energy storage device 23 is lower than the preset value, setting the hydraulic spring energy storage device 23 to be in a constant state;
in the second mode, when the vehicle body speed is greater than the preset vehicle speed during running of the vehicle, the energy storage value of the hydraulic spring energy storage device 23 is judged, if the energy storage value of the hydraulic spring energy storage device 23 reaches the preset value, the hydraulic spring energy storage device 23 is set to be in a constant state, and if the energy storage value of the hydraulic spring energy storage device 23 is lower than the preset value, the hydraulic spring energy storage device 23 is set to be in an energy storage state.
In the invention, the stop mechanism locks the energy storage spring 19 through the winding mechanism and the pull wire 11, in view of the fact that the connecting plate 9 moves in the deformation process of the energy storage spring 19, the pull wire 11 connected with the connecting plate 9 can change along with the expansion and contraction of the energy storage spring 19, the winding mechanism is needed to wind the pull wire 11 in a difference mode or put out more pull wires 11 to meet the movement of the connecting plate 9, in practical application, other existing winding mechanisms capable of tightening or pulling out the pull wire 11, such as a winding roller, can be selected, and the scheme is not limited to the scheme of the embodiment; correspondingly, the hand brake 18 is matched with the bag brake to lock the winding mechanism, the energy storage spring 19 is locked by stretching the locking pull wire 11, and if the winding mechanism is the winding mechanism disclosed in the embodiment or is a winding roller in application, other devices capable of driving the shaft 21 to rotate, such as a motor, can be selected.
Meanwhile, in practical application, the displacement sensor 20 may be disposed on the fixing plate 4 or on the connecting plate 9, where the displacement sensor 20 is connected with the control device for detecting the distance between the fixing plate 4 and the connecting plate 9, and obtaining the energy stored by the energy storage spring 19 according to the length of the extension or compression of the energy storage spring 19 and the distance between the fixing plate 4 and the connecting plate 9, thereby obtaining the energy storage value of the hydraulic spring energy storage device 23.
Example 2:
according to the motor hybrid driving method based on the hydraulic spring energy storage device, the motor hybrid driving system based on the hydraulic spring energy storage device disclosed in the embodiment 1 is used for starting and driving the vehicle body to run, the hydraulic spring energy storage device 23 comprises three working states, namely a constant state, an energy storage state capable of recovering braking energy and an energy release state capable of releasing energy, the braking energy is recovered through the energy storage state of the hydraulic spring energy storage device 23, and the energy released by the hydraulic spring energy storage device 23 is used for assisting the motor 25 to drive the vehicle body to run. Specifically, the method comprises the following working modes:
mode one: during the driving process of the motor 25, when the vehicle body accelerates, judging the energy storage value of the hydraulic spring energy storage device 23, if the energy storage value of the hydraulic spring energy storage device 23 reaches a preset value, setting the hydraulic spring energy storage device 23 to be in an energy release state, driving the vehicle body to accelerate by the energy released by the hydraulic spring energy storage device 23 through the auxiliary motor 25, and if the energy storage value of the hydraulic spring energy storage device 23 is lower than the preset value, setting the hydraulic spring energy storage device 23 to be in a constant state;
in the second mode, when the vehicle body speed is greater than the preset vehicle speed during running of the vehicle, the energy storage value of the hydraulic spring energy storage device 23 is judged, if the energy storage value of the hydraulic spring energy storage device 23 reaches the preset value, the hydraulic spring energy storage device 23 is set to be in a constant state, and if the energy storage value of the hydraulic spring energy storage device 23 is lower than the preset value, the hydraulic spring energy storage device 23 is set to be in an energy storage state.
Wherein, the braking energy is recovered through the energy storage state of the hydraulic spring energy storage device 23, namely: the motor 25 drives the driving shaft 21 to rotate, the rotating driving shaft 21 transmits braking energy to the power transmission mechanism, and the power transmission mechanism transmits the braking energy to the energy storage spring 19 and drives the energy storage spring 19 to deform and store energy, and the method specifically comprises the following steps:
(1) The motor 25 acts on the driving shaft 21, the driving shaft 21 rotates and transmits braking energy to the output shaft 2 of the hydraulic pump, the hydraulic pump 1 and the hydraulic cylinder cooperate to drive the energy storage spring 19 to stretch away from the fixed plate 4 through the connecting plate 9, and kinetic energy is converted into elastic energy through deformation of the energy storage spring 19 to be stored;
(2) In the process that the energy storage spring 19 stretches in the direction away from the fixed plate 4, the wire 11 is wound by the winding mechanism and drives the wire 11 positioned between the wire drawing disc 12 and the movable connecting plate 9 to be in a straightening state, specifically: the coil spring 14 deforms and drives the wire drawing disc 12 to rotate through the connecting shaft 13, and the rotating wire drawing disc 12 drives the wire drawing 11 positioned between the wire drawing disc 12 and the movable connecting plate 9 to be in a straightening state;
(3) When the power transmission mechanism is stopped, a stop piece is opened, the stop piece locks the winding mechanism through the stop mechanism, and the energy storage spring 19 is driven to maintain the current stretching state through the matching of the locked winding mechanism and the pull wire 11, specifically: when the power transmission mechanism is stopped, the hand brake 18 is pulled, the hand brake 18 drives the connecting shaft 13 to stop rotating through the brake wrapping, the connecting shaft 13 stopping rotating is matched with the wire pulling disc 12 and the wire pulling 11, and the energy storage spring 19 is driven through the connecting plate 9 to maintain the current stretching state;
the energy released by the hydraulic spring energy storage device 23 in the energy release state assists the motor 25 to drive the vehicle body to run, namely: the deformation of the energy storage spring 19 converts elastic energy into kinetic energy, and the kinetic energy is transmitted to the driving shaft 21 through the power transmission mechanism to release energy, and the method specifically comprises the following steps of: the elastic energy of the energy storage spring 19 is converted into kinetic energy, the kinetic energy drives the energy storage spring 19 to compress towards the direction close to the fixed plate 4, the compressed energy storage spring 19 drives a piston rod of the hydraulic cylinder to move towards the direction close to the fixed plate 4 through the connecting plate 9, and the kinetic energy is transmitted to the driving shaft 21 through the power transmission mechanism and drives the driving shaft 21 to rotate.
The judging of the stored energy value of the hydraulic spring energy storage device 23 includes the following steps: the distance value between the fixed plate 4 and the connecting plate 9 is detected by the displacement sensor 20, the distance value between the fixed plate 4 and the connecting plate 9 is used as a standard for judging the energy storage value of the hydraulic spring energy storage device 23, if the distance value between the fixed plate 4 and the connecting plate 9 is smaller than a preset value, the energy storage value of the hydraulic spring energy storage device 23 is lower than the preset value, and if the distance value between the fixed plate 4 and the connecting plate 9 reaches or exceeds the preset value, the energy storage value of the hydraulic spring energy storage device 23 reaches the preset value.
The present invention can be easily implemented by those skilled in the art through the above specific embodiments. It should be understood that the invention is not limited to the particular embodiments described above. Based on the disclosed embodiments, a person skilled in the art may combine different technical features at will, so as to implement different technical solutions. Other than the technical features described in the specification, all are known to those skilled in the art.
Claims (7)
1. The motor hybrid driving system based on the hydraulic spring energy storage device comprises a motor, a storage battery, a controller and a driving shaft, wherein the storage battery is connected with the motor, and the motor can drive the driving shaft to rotate; the connecting plate is arranged at the outer end of a piston rod of the hydraulic cylinder, the axis of the piston rod of the hydraulic cylinder is perpendicular to the plate surface of the connecting plate, the fixed plate is arranged on a cylinder barrel of the hydraulic cylinder, the fixed plate is arranged opposite to the connecting plate, the energy storage spring is sleeved on the outer side of the hydraulic cylinder, the energy storage spring and the piston rod of the hydraulic cylinder are coaxially arranged and connected between the fixed plate and the connecting plate, the power transmission mechanism is matched with the rotating driving shaft to drive the energy storage spring to deform and recover braking energy, and energy released by deformation of the energy storage spring can be transmitted to the driving shaft through the power transmission mechanism; the stop device is connected with the connecting plate and can drive the energy storage spring to maintain the current deformation energy storage state;
a displacement sensor is arranged in a cylinder barrel of the hydraulic cylinder, the displacement sensor is positioned on the side wall, close to the fixed plate, in the cylinder barrel, and is used for detecting the position of a piston of the hydraulic cylinder, and the distance value between the piston in the hydraulic cylinder and the side wall, close to the fixed plate 4, on the cylinder barrel can be obtained through the position of the piston, so that the distance value between the fixed plate and the connecting plate is obtained;
the storage battery, the displacement sensor, the hydraulic pump and the motor are all connected with the controller;
the side surface of the connecting plate opposite to the hydraulic cylinder is the back surface of the connecting plate;
the stop device comprises a stay wire, a winding mechanism and a stop mechanism, one end of the stay wire is connected to the back surface of the connecting plate, the other end of the stay wire is wound on the winding mechanism, and the winding mechanism can stretch and retract the stay wire in the transmission process of the power transmission mechanism; the stop mechanism is connected with the winding mechanism, and can drive the energy storage spring to maintain the current deformation energy storage state through the winding mechanism when the power transmission mechanism is stopped;
the winding mechanism comprises a connecting shaft, a wire drawing disc and a coil spring, wherein the connecting shaft is positioned at the back of the connecting plate, the other end of the wire drawing disc is wound on the wire drawing disc, the wire drawing disc is arranged on the connecting shaft and is in running fit with the connecting shaft, the inner end of the coil spring is arranged on the connecting shaft, the coil spring can drive the wire drawing disc to rotate through the connecting shaft, and the coil spring, the connecting shaft and the wire drawing disc are matched in the transmission process of the power transmission mechanism so as to drive the wire drawing between the wire drawing disc and the connecting plate to maintain a straight state.
2. The motor hybrid drive system based on a hydraulic spring energy storage device of claim 1, wherein the stopping mechanism comprises a driving member and a bag brake consisting essentially of a hub and a bag brake pad, the hub is disposed on the connecting shaft and is in rotational engagement with the connecting shaft, the bag brake pad is disposed on the hub, the driving member is connected with the bag brake pad, and the driving member is capable of driving the connecting shaft to stop by the bag brake.
3. The hydraulic spring energy storage device based motor hybrid drive system of claim 2 wherein the drive member is a hand brake mounted to the vehicle body.
4. A hydraulic spring energy storage device based motor hybrid drive system according to any one of claims 1-3, wherein there are a plurality of energy storage springs, the diameters of which increase in sequence, the plurality of energy storage springs being coaxially arranged and sleeved in sequence outside the hydraulic cylinder.
5. The hybrid driving method of the motor based on the hydraulic spring energy storage device is characterized in that the hybrid driving system based on the hydraulic spring energy storage device is used for starting and driving the vehicle body to run, the hydraulic spring energy storage device comprises three working states, namely an energy storage state capable of recovering braking energy and an energy release state capable of releasing energy, the energy storage state of the hydraulic spring energy storage device is used for recovering braking energy, and the energy released by the hydraulic spring energy storage device in the energy release state is used for assisting the motor to drive the vehicle body to run;
the method comprises the following working modes:
in the motor driving process, when the vehicle body accelerates, judging an energy storage value of the hydraulic spring energy storage device, if the energy storage value of the hydraulic spring energy storage device reaches a preset value, setting the hydraulic spring energy storage device to be in an energy release state, driving the vehicle body to accelerate by the energy auxiliary motor released by the hydraulic spring energy storage device, and if the energy storage value of the hydraulic spring energy storage device is lower than the preset value, setting the hydraulic spring energy storage device to be in a constant state;
and in the running process of the vehicle, when the speed of the vehicle body is greater than a preset vehicle speed, judging the energy storage value of the hydraulic spring energy storage device, if the energy storage value of the hydraulic spring energy storage device reaches a preset value, setting the hydraulic spring energy storage device to be in a constant state, and if the energy storage value of the hydraulic spring energy storage device is lower than the preset value, setting the hydraulic spring energy storage device to be in an energy storage state.
6. The hybrid driving method for an electric motor based on a hydraulic spring energy storage device according to claim 5, wherein the braking energy is recovered by the energy storage state of the hydraulic spring energy storage device, comprising the steps of: the braking energy is transmitted to the power transmission mechanism through the rotating driving shaft, and the braking energy is transmitted to the energy storage spring through the power transmission mechanism and drives the energy storage spring to deform and store energy;
the energy released by the hydraulic spring energy storage device in the energy release state assists the motor to drive the vehicle body to run, and the method comprises the following steps: the deformation of the energy storage spring converts elastic energy into kinetic energy, and the deformed energy storage spring transmits the kinetic energy to the driving shaft through the power transmission mechanism and drives the driving shaft to rotate.
7. The motor hybrid driving method based on a hydraulic spring energy storage device according to claim 5, wherein the determining of the energy storage value of the hydraulic spring energy storage device includes the steps of: the distance value between the fixed plate and the connecting plate is detected through the displacement sensor, the distance value between the fixed plate and the connecting plate is used as a standard for judging the energy storage value of the hydraulic spring energy storage device, if the distance value between the fixed plate and the connecting plate is smaller than a preset value, the energy storage value of the hydraulic spring energy storage device is lower than the preset value, and if the distance value between the fixed plate and the connecting plate reaches or exceeds the preset value, the energy storage value of the hydraulic spring energy storage device reaches the preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710725362.0A CN107458203B (en) | 2017-08-22 | 2017-08-22 | Motor hybrid driving system and method based on hydraulic spring energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710725362.0A CN107458203B (en) | 2017-08-22 | 2017-08-22 | Motor hybrid driving system and method based on hydraulic spring energy storage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107458203A CN107458203A (en) | 2017-12-12 |
| CN107458203B true CN107458203B (en) | 2023-10-31 |
Family
ID=60550398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710725362.0A Active CN107458203B (en) | 2017-08-22 | 2017-08-22 | Motor hybrid driving system and method based on hydraulic spring energy storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107458203B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2193977C2 (en) * | 2000-02-29 | 2002-12-10 | Воронежский государственный аграрный университет им. К.Д. Глинки | Vehicle energy recuperator |
| DE102006017095A1 (en) * | 2006-04-10 | 2006-09-21 | Christensen, Niels | Engine e.g. internal combustion engine, driving and braking method for motor vehicle, involves storing portion of kinetic energy as potential energy during braking process and releasing stored energy to drive vehicle when vehicle stops |
| 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 |
| EP3034369A1 (en) * | 2014-12-15 | 2016-06-22 | Linde Material Handling GmbH | Mobile working machine with a braking device |
| WO2017007509A2 (en) * | 2015-07-07 | 2017-01-12 | Acs International, Llc | Kinetic energy recovery system under braking |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3170713B1 (en) * | 2015-11-17 | 2022-05-25 | Volvo Car Corporation | Hybrid vehicle with compact driveline |
| CN107082024A (en) * | 2017-05-12 | 2017-08-22 | 山东亿玛扬帆机电有限公司 | A kind of electric automobile energy-accumulated electric switched machine assembly and its method of work |
| CN207140767U (en) * | 2017-08-22 | 2018-03-27 | 张洪延 | Motor hybrid drive system based on hydraulic spring grease cup energy storage device |
-
2017
- 2017-08-22 CN CN201710725362.0A patent/CN107458203B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2193977C2 (en) * | 2000-02-29 | 2002-12-10 | Воронежский государственный аграрный университет им. К.Д. Глинки | Vehicle energy recuperator |
| DE102006017095A1 (en) * | 2006-04-10 | 2006-09-21 | Christensen, Niels | Engine e.g. internal combustion engine, driving and braking method for motor vehicle, involves storing portion of kinetic energy as potential energy during braking process and releasing stored energy to drive vehicle when vehicle stops |
| 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 |
| EP3034369A1 (en) * | 2014-12-15 | 2016-06-22 | Linde Material Handling GmbH | Mobile working machine with a braking device |
| WO2017007509A2 (en) * | 2015-07-07 | 2017-01-12 | Acs International, Llc | Kinetic energy recovery system under braking |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107458203A (en) | 2017-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107364327B (en) | Engine hybrid driving system and driving method based on hydraulic spring energy storage device | |
| JP6145172B2 (en) | Booster and brake system | |
| CN211308536U (en) | Driving-parking integrated brake for vehicle and vehicle with same | |
| CN105059274A (en) | Automobile kinetic energy conversion and recovery device | |
| CN107458354B (en) | Hydraulic spring energy storage driving device and method | |
| CN107458203B (en) | Motor hybrid driving system and method based on hydraulic spring energy storage device | |
| CN104709084B (en) | A kind of automobile hydraulic start stop system | |
| CN116901718B (en) | Automobile braking system with energy recovery function | |
| CN207510208U (en) | Engine hybrid drive system based on hydraulic spring grease cup energy storage device | |
| CN207140767U (en) | Motor hybrid drive system based on hydraulic spring grease cup energy storage device | |
| CN105416254A (en) | Automobile brake energy recovery device based on piezoelectric ceramics | |
| CN104442778A (en) | Hydraulic brake system of electric vehicle | |
| CN112172754A (en) | New energy automobile braking power generation facility | |
| CN213776168U (en) | Regenerative braking device based on air pressure potential energy | |
| CN202418309U (en) | Driving device of automatic clutch for vehicle | |
| CN207072337U (en) | Hydraulic spring grease cup energy accumulating drive | |
| CN103359081B (en) | A kind of wheel limit hydraulic pump, recover kinetic energy delivery system and vehicle | |
| CN108708954B (en) | Wind power generation double-drive transmission device | |
| CN213413750U (en) | New energy automobile braking power generation facility | |
| CN215682059U (en) | Caliper generator set with brake disc kinetic energy recovery function | |
| CN212775280U (en) | Electronic brake/parking mechanism | |
| CN204713064U (en) | The hydraulic brake system of electronlmobil | |
| CN210153116U (en) | Piston brake device | |
| CN209955962U (en) | Brake energy storage booster unit | |
| CN111412234A (en) | Electronic brake/parking mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190109 Address after: 310006 No. 155 Dongxin Road, Xiacheng District, Hangzhou City, Zhejiang Province Applicant after: Zhang Hongtao Address before: 271400 Shandong Tai'an Wen Jie Intelligent Power Co. Ltd., 666 Huayang street, Ningyang, Tai'an Applicant before: Zhang Hongyan |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |