CN109552040B - Method for recovering vibration energy of rear axle of electric automobile - Google Patents
Method for recovering vibration energy of rear axle of electric automobile Download PDFInfo
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- CN109552040B CN109552040B CN201811608007.6A CN201811608007A CN109552040B CN 109552040 B CN109552040 B CN 109552040B CN 201811608007 A CN201811608007 A CN 201811608007A CN 109552040 B CN109552040 B CN 109552040B
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000003921 oil Substances 0.000 claims abstract description 155
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 36
- 230000008569 process Effects 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 claims abstract description 6
- 238000007667 floating Methods 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000010248 power generation Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
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- 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
- B60K25/00—Auxiliary drives
- B60K25/10—Auxiliary drives directly from oscillating movements due to vehicle running motion, e.g. suspension movement
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- 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
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
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- 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
- B60K25/00—Auxiliary drives
- B60K25/10—Auxiliary drives directly from oscillating movements due to vehicle running motion, e.g. suspension movement
- B60K2025/103—Auxiliary drives directly from oscillating movements due to vehicle running motion, e.g. suspension movement by electric means
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- 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
- B60K25/00—Auxiliary drives
- B60K25/10—Auxiliary drives directly from oscillating movements due to vehicle running motion, e.g. suspension movement
- B60K2025/106—Auxiliary drives directly from oscillating movements due to vehicle running motion, e.g. suspension movement by fluid means
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
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- Vehicle Body Suspensions (AREA)
Abstract
The invention provides a method for recovering vibration energy of a rear axle of an electric automobile. The method comprises the following steps: the method comprises the following steps of installing a hydraulic cylinder between a frame and a rear axle of the electric automobile in a floating mode, arranging a first oil port in a rodless cavity of the hydraulic cylinder, arranging a second oil port in a rod cavity of the hydraulic cylinder, connecting an electromagnetic valve group to the first oil port and the second oil port, measuring the distance between the frame and the rear axle to obtain distance data, and setting a time interval; in the electric automobile driving process, when the distance measured in the time interval is reduced, the hydraulic oil in the rodless cavity is discharged into the oil tank through the first oil port, the electromagnetic valve group and the generator through the control electromagnetic valve group, when the distance measured in the time interval is increased, the hydraulic oil in the rod cavity is discharged into the oil tank through the second oil port, the electromagnetic valve group and the generator through the control electromagnetic valve group, and the generator is used for generating electricity and storing electric energy into the storage battery of the electric automobile. The recovery method has higher electric energy conversion efficiency.
Description
Technical Field
The invention relates to the field of electric automobiles, in particular to a method for recovering vibration energy of a rear axle of an electric automobile.
Background
With the development of new energy electric automobiles, automobile energy recovery is more and more regarded. In the driving process of the electric automobile, the up-and-down displacement between the frame and the rear axle can be caused due to the influence of factors such as uneven road surface, acceleration and deceleration of the automobile and the like, and vibration energy can be generated; at present, the vibration reduction and filtration are generally carried out directly through a vibration absorber, so that the vibration energy cannot be effectively recycled and utilized; therefore, it is necessary to design a recycling method to realize the recycling of the vibration energy.
Disclosure of Invention
In view of the above situation, the present invention provides a method for recovering vibration energy of a rear axle of an electric vehicle, so as to recover the vibration energy.
In order to achieve the aim, the invention discloses a method for recovering vibration energy of a rear axle of an electric automobile, which comprises the following steps:
providing a hydraulic cylinder, and installing the hydraulic cylinder between a frame and a rear axle of the electric automobile in a floating manner, wherein a rodless cavity of the hydraulic cylinder is provided with a first oil port, and a rod cavity of the hydraulic cylinder is provided with a second oil port;
providing an electromagnetic valve group, connecting the electromagnetic valve group to the first oil port and the second oil port, and controlling the flow paths and directions of the hydraulic oil of the first oil port and the hydraulic oil of the second oil port;
measuring the distance between the frame and the rear axle to obtain distance data, and setting a time interval;
in the electric automobile driving process, when the measured distance in the time interval reduces, through control the solenoid valve group makes hydraulic oil in the rodless chamber arranges to the oil tank through first hydraulic fluid port, solenoid valve group and generator in, hydraulic oil in the oil tank inhales through solenoid valve group and second hydraulic fluid port have in the pole chamber, when the measured distance increases in the interval, through control the solenoid valve group, make hydraulic oil in having the pole chamber arranges to the oil tank through second hydraulic fluid port, solenoid valve group and generator in, hydraulic oil in the oil tank inhales through solenoid valve group and first hydraulic fluid port in the rodless chamber, utilize the generator electricity generation and store the electric energy to the electric automobile in the battery.
The invention has the beneficial effects that:
(1) by measuring the distance between the frame and the rear axle in the time interval, the opening accuracy of the electromagnetic valve group can be ensured, the relative movement and the back-to-back movement between the frame and the rear axle can be realized, the power can be generated by the generator, the generated energy is improved, the conversion rate of vibration energy is ensured, and the endurance mileage of the electric automobile is improved.
(2) The hydraulic cylinder is installed between the frame and the rear axle of the electric automobile in a floating mode, so that the installation accuracy of the hydraulic cylinder can be guaranteed, the occurrence of eccentricity is avoided, and the service life of the hydraulic cylinder is guaranteed.
The invention further improves the method for recovering the vibration energy of the rear axle of the electric automobile, the electromagnetic valve group comprises a first two-position four-way electromagnetic valve and a second two-position four-way electromagnetic valve, an oil port B of the first two-position four-way electromagnetic valve is communicated with a first oil port, an oil port A of the second two-position four-way electromagnetic valve is communicated with a second oil port, an oil port P of the first two-position four-way electromagnetic valve and an oil port P of the second two-position four-way electromagnetic valve are communicated with an oil tank through a first oil pipe, a first one-way valve is arranged on the first oil pipe, one end of the first one-way valve close to the oil tank is an oil inlet, an oil port T of the first two-position four-way electromagnetic valve and an oil port T of the second two-position four-way electromagnetic valve are communicated with the oil tank through a second oil pipe, a second one-way valve is arranged, the generator is arranged on the second oil pipe and is arranged between the second one-way valve and the oil tank. The flow path and direction of the hydraulic oil are accurately adjusted by controlling the on-off of the first two-position four-way electromagnetic valve and the second two-position four-way electromagnetic valve.
The invention further improves the method for recovering the vibration energy of the rear axle of the electric automobile, and in the step of reducing the measured distance in the time interval, the first two-position four-way electromagnetic valve is controlled to be electrified, and the second two-position four-way electromagnetic valve is controlled to be deenergized. When the frame and the rear axle move relatively, the first two-position four-way solenoid valve is controlled to be powered on, and the second two-position four-way solenoid valve is controlled to be powered off, so that the hydraulic oil in the rodless cavity is discharged into the oil tank through the generator, the rotating blades of the generator are driven to rotate, power generation is realized, and the hydraulic oil in the oil tank is sucked into the rod cavity under the action of atmospheric pressure.
The invention further improves the method for recovering the vibration energy of the rear axle of the electric automobile, and in the step of increasing the measured distance in the time interval, the first two-position four-way electromagnetic valve is controlled to be powered off, and the second two-position four-way electromagnetic valve is controlled to be powered on. When the frame and the rear axle move oppositely, the first two-position four-way solenoid valve is controlled to be powered off, and the second two-position four-way solenoid valve is controlled to be powered on, so that the hydraulic oil in the rod cavity is discharged into the oil tank through the generator, the rotating blade of the generator is driven to rotate, power generation is realized, and the hydraulic oil in the oil tank is sucked into the rodless cavity under the action of atmospheric pressure.
The invention further improves the method for recovering the vibration energy of the rear axle of the electric automobile, and the method further comprises a first hydraulic control one-way valve and a second hydraulic control one-way valve, wherein an oil inlet of the first hydraulic control one-way valve is communicated with an oil inlet of the second one-way valve, an oil outlet of the first hydraulic control one-way valve is communicated with the first oil port, an oil inlet of the second hydraulic control one-way valve is communicated with an oil inlet of the second one-way valve, and an oil outlet of the second hydraulic control one-way valve is communicated with the second oil port.
The invention further improves the method for recovering the vibration energy of the rear axle of the electric automobile, wherein a first overflow valve is arranged between the first oil port and the oil tank, and a second overflow valve is arranged between the second oil port and the oil tank. The pressure limiting protection effect is achieved, and the hydraulic cylinder is prevented from working under the high-pressure condition due to overlarge oil pressure.
The invention further provides a further improvement of the method for recovering the vibration energy of the rear axle of the electric automobile, the method further comprises a control unit and a distance detection device for measuring the distance between the rear axle and the automobile frame, the distance detection device is installed on the rear axle, the control unit comprises a single chip microcomputer, a first relay connected in series with a coil S1 of the first two-position four-way electromagnetic valve and a second relay connected in series with a coil S2 of the second two-position four-way electromagnetic valve, and the single chip microcomputer is electrically connected with the distance detection device, the first relay and the second relay. The distance in the time interval is calculated to be increased or reduced through the single chip microcomputer so as to control the on-off of the first relay and the second relay, and further the on-off of the first two-position four-way electromagnetic valve and the second two-position four-way electromagnetic valve is achieved.
The invention further provides a further improvement of the method for recovering the vibration energy of the rear axle of the electric automobile, in the step of the driving process of the electric automobile, the distance between the frame and the rear axle is measured by the distance detection device and is transmitted to the single chip microcomputer, the single chip microcomputer is used for calculating the change value of the distance in a time interval, when the change value is a negative value, the single chip microcomputer is used for controlling the first relay to be electrified and controlling the second relay to be electrified, and when the change value is a positive value, the single chip microcomputer is used for controlling the first relay to be electrified and controlling the second relay to be electrified. The hydraulic cylinder has the advantages that the flowing path and direction of hydraulic oil in the hydraulic cylinder are accurate, and the relative or back-to-back movement between the frame and the rear axle is realized while the recovery of vibration energy is realized.
Drawings
FIG. 1 is a flow chart of a method for recovering vibration energy of a rear axle of an electric vehicle according to the present invention.
Fig. 2 is a schematic diagram of the vibration energy recovery device of the electric vehicle according to the present invention.
Detailed Description
To facilitate an understanding of the present invention, the following description is made in conjunction with the accompanying drawings and examples.
Referring to fig. 1 and 2, the invention discloses a method for recovering vibration energy of a rear axle of an electric vehicle, comprising the following steps:
step 101: providing a hydraulic cylinder 11, installing the hydraulic cylinder 11 between a frame 12 and a rear axle 13 of the electric automobile in a floating manner, wherein a rodless cavity 111 of the hydraulic cylinder 11 is provided with a first oil port, and a rod cavity 112 of the hydraulic cylinder 11 is provided with a second oil port;
step 102: providing an electromagnetic valve group, connecting the electromagnetic valve group to the first oil port and the second oil port, and controlling the flow paths and the directions of the hydraulic oil of the first oil port and the hydraulic oil of the second oil port;
step 103: measuring the distance between the frame 12 and the rear axle 13 to obtain distance data, and setting a time interval;
step 104: in the running process of the electric automobile, when the distance measured in the time interval is reduced, the electromagnetic valve group is controlled, hydraulic oil in the rodless cavity 111 is discharged into the oil tank 6 through the first oil port, the electromagnetic valve group and the generator 51, the hydraulic oil in the oil tank 6 is sucked into the rod cavity 112 through the electromagnetic valve group and the second oil port, when the distance measured in the interval is increased, the electromagnetic valve group is controlled, hydraulic oil in the rod cavity 112 is discharged into the oil tank 6 through the second oil port, the electromagnetic valve group and the generator 51, the hydraulic oil in the oil tank 6 is sucked into the rodless cavity 111 through the electromagnetic valve group and the first oil port, the generator 51 is used for generating electricity, and electric energy is stored into the storage battery 52 of the electric automobile.
In the embodiment, (1) the vibration energy is converted into the electric energy through the generator 51, and the electric energy is stored through the storage battery of the electric automobile, so that the endurance mileage of the electric automobile is prolonged; (2) by measuring the distance between the frame 12 and the rear axle 13 in real time and controlling the electromagnetic valve group according to the increase or decrease of the measured distance in a time interval, the flow path and the direction of hydraulic oil of the first oil port and the second oil port in the hydraulic cylinder 11 are changed, so that power generation can be realized no matter the frame 12 and the rear axle 13 move relatively or back to back in the running process of the electric automobile, and the conversion rate of vibration energy is improved; (3) through with pneumatic cylinder 11 floating installation between electric automobile's frame 12 and rear axle 13, take place the problem of eccentricity and the poor precision of equilibrium degree when can avoiding pneumatic cylinder 11 to install, reduce the wearing and tearing of sealing member in pneumatic cylinder 11, and then guarantee pneumatic cylinder 11's working property, prolonged pneumatic cylinder 11's life. Specifically, the working frequency of the distance detection device 4 is f, and the time interval is 2-3 times of 1/f.
As shown in fig. 2, in the present invention, the solenoid valve set includes a first two-position four-way solenoid valve 21 and a second two-position four-way solenoid valve 22, an oil port B of the first two-position four-way solenoid valve 21 is communicated with a first oil port, an oil port a of the second two-position four-way solenoid valve 22 is communicated with a second oil port, an oil port P of the first two-position four-way solenoid valve 21 and an oil port P of the second two-position four-way solenoid valve 22 are communicated with the oil tank 6 through a first oil pipe 31, the first oil pipe 31 is provided with a first check valve 23, one end of the first check valve 23 close to the oil tank 6 is an oil inlet, the T oil port of the second two-position four-way solenoid valve 22 is communicated with the oil tank 6 through a second oil pipe 32, the second oil pipe 32 is provided with a second check valve 24, one end of the second check valve 24 close to the oil tank 6 is an oil outlet, the second oil pipe 32 is provided with a generator 51, and the generator 51 is arranged between the second check valve 24 and the oil tank 6. In this embodiment, the power on/off of the first two-position four-way solenoid valve 21 and the second two-position four-way solenoid valve 22 is changed in real time according to the relative displacement between the frame 12 and the rear axle 13 to adjust the flow direction of the hydraulic oil in the hydraulic cylinder 11, so that the generator 51 generates power in the whole process.
Further, in the step of reducing the distance measured in the time interval, the first two-position four-way solenoid valve 21 is controlled to be energized, and the second two-position four-way solenoid valve 22 is controlled to be de-energized. In this embodiment, when the frame 12 and the rear axle 13 move relatively, the first two-position four-way solenoid valve 21 is controlled to be powered on, and the second two-position four-way solenoid valve 22 is controlled to be powered off, so that the hydraulic oil in the rodless cavity 111 is discharged into the oil tank 6 through the generator 51, the rotating blades of the generator 51 are driven to rotate, power generation is realized, and the hydraulic oil in the oil tank 6 is sucked into the rod cavity 112 under the action of atmospheric pressure.
Further, in the distance increasing step measured in the time interval, the first two-position four-way solenoid valve 21 is controlled to be de-energized, and the second two-position four-way solenoid valve 22 is controlled to be energized. In this embodiment, when the frame 12 and the rear axle 13 move away from each other, the first two-position four-way solenoid valve 21 is de-energized and the second two-position four-way solenoid valve 22 is energized, so that the hydraulic oil in the rod chamber 112 is discharged into the oil tank 6 through the generator 51, the rotating blade of the generator 51 is driven to rotate, power generation is realized, and the hydraulic oil in the oil tank 6 is sucked into the rodless chamber 111 under the action of atmospheric pressure.
Further, the hydraulic control system further comprises a first hydraulic control one-way valve 25 and a second hydraulic control one-way valve 26, wherein an oil inlet of the first hydraulic control one-way valve 25 is communicated with an oil inlet of the second one-way valve 24, an oil outlet of the first hydraulic control one-way valve 25 is communicated with the first oil port, an oil inlet of the second hydraulic control one-way valve 26 is communicated with an oil inlet of the second one-way valve 24, and an oil outlet of the second hydraulic control one-way valve 26 is communicated with the second oil port. In this embodiment, when the first oil port is greater than the oil inlet pressure of second check valve 24, first hydraulic control check valve switches on in the reverse direction, when the pressure of second oil port is greater than the oil inlet pressure of second check valve 24, the second hydraulic control check valve switches on in the reverse direction, first hydraulic control check valve and the reverse switch-on of second hydraulic control check valve can realize the reposition of redundant personnel effect, avoid first oil port or the too big pneumatic cylinder 11 that leads to of second oil port pressure, first two-position four-way solenoid valve 21 and second two-position four-way solenoid valve 22 break down, reduce the throttle loss when first two-position four-way solenoid valve 21 and second two-position four-way solenoid valve 22 cross hydraulic oil simultaneously, the conversion rate of vibration energy is improved.
Further, a first overflow valve 27 is arranged between the first oil port and the oil tank 6, and a second overflow valve 28 is arranged between the second oil port and the oil tank 6. In this embodiment, the first overflow valve 27 and the second overflow valve 28 are arranged to play a role of pressure limiting and safety, so as to set the pressure of the whole system, avoid the hydraulic cylinder 11, the first one-to-one two-position four-way solenoid valve and the second two-position four-way solenoid valve 22 from being failed due to overhigh system pressure, and ensure the safety in the vibration energy recovery process.
Further, the distance measuring device comprises a control unit and a distance detecting device 4 used for measuring the distance between the rear axle 13 and the vehicle frame 12, the distance detecting device 4 is installed on the rear axle 13, the control unit comprises a single chip microcomputer, a first relay connected in series with a coil S1 of the first two-position four-way electromagnetic valve 21 and a second relay connected in series with a coil S2 of the second two-position four-way electromagnetic valve 22, and the single chip microcomputer is electrically connected with the distance detecting device 4, the first relay and the second relay. In this embodiment, measure the distance between different time interval frame 12 and the rear axle 13 through distance detection device 4, and transmit for the singlechip, it increases or reduces to calculate the distance in the time interval through the singlechip, with the on-off of control first relay and second relay, realize coil S1 and coil S2' S on-off, and then the route and the direction of flowing through of hydraulic oil among the accurate entire system of adjusting, guarantee to be relative motion or the looks back of the body motion between rear axle 13 and frame 12 and all can realize the generator 51 electricity generation, the conversion efficiency of vibration energy has been improved, compare with prior art and have better adaptability and practicality.
Furthermore, in step 104, the distance between the frame 12 and the rear axle 13 is measured by the distance detecting device 4 and transmitted to the single chip microcomputer, the single chip microcomputer is used for calculating a variation value of the distance in a time interval, when the variation value is a negative value, the single chip microcomputer is used for controlling the first relay to be powered on and controlling the second relay to be powered off, and when the variation value is a positive value, the single chip microcomputer is used for controlling the first relay to be powered off and controlling the second relay to be powered on. In this embodiment, the hydraulic oil in the hydraulic cylinder 11 flows through a path and a direction with high accuracy.
The method for recovering the vibration energy of the rear axle of the electric automobile has the beneficial effects that:
1. in the driving process of the electric automobile, the vibration energy can be converted into the electric energy to be stored when the frame and the rear axle move oppositely or oppositely, the conversion rate is high, and the endurance mileage of the electric automobile is prolonged.
2. The singlechip is used for controlling the on-off of the first two-position four-way electromagnetic valve and the second two-position four-way electromagnetic valve, so that the flowing path and direction of hydraulic oil in the whole system can be accurately adjusted, and the electricity generation can be realized in the whole process of the automobile running process.
3. The installation accuracy of the hydraulic cylinder is guaranteed, eccentricity is avoided, abrasion of a sealing piece in the hydraulic cylinder is reduced, the working performance of the hydraulic cylinder is guaranteed, and the service life of the hydraulic cylinder is prolonged.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
It should be noted that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions of the present invention, so that the present invention has no technical essence, and any structural modification, ratio relationship change, or size adjustment should still fall within the range covered by the technical contents disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Claims (7)
1. A method for recovering vibration energy of a rear axle of an electric automobile is characterized by comprising the following steps:
providing a hydraulic cylinder, and installing the hydraulic cylinder between a frame and a rear axle of the electric automobile in a floating manner, wherein a rodless cavity of the hydraulic cylinder is provided with a first oil port, and a rod cavity of the hydraulic cylinder is provided with a second oil port;
providing an electromagnetic valve group, connecting the electromagnetic valve group to the first oil port and the second oil port, and controlling the flow paths and directions of the hydraulic oil of the first oil port and the hydraulic oil of the second oil port;
measuring the distance between the frame and the rear axle to obtain distance data, and setting a time interval;
when the distance measured in the time interval is reduced in the running process of the electric automobile, hydraulic oil in the rodless cavity is discharged into the oil tank through the first oil port, the electromagnetic valve group and the generator by controlling the electromagnetic valve group, the hydraulic oil in the oil tank is sucked into the rod cavity through the electromagnetic valve group and the second oil port, when the distance measured in the time interval is increased, the hydraulic oil in the rod cavity is discharged into the oil tank through the second oil port, the electromagnetic valve group and the generator by controlling the electromagnetic valve group, the hydraulic oil in the oil tank is sucked into the rodless cavity through the electromagnetic valve group and the first oil port, and the generator is used for generating electricity and storing electric energy into a storage battery of the electric automobile;
the electromagnetic valve group comprises a first two-position four-way electromagnetic valve and a second two-position four-way electromagnetic valve, an oil port B of the first two-position four-way electromagnetic valve is communicated with the first oil port, the oil port A of the second two-position four-way solenoid valve is communicated with the second oil port, the oil port P of the first two-position four-way solenoid valve and the oil port P of the second two-position four-way solenoid valve are communicated with an oil tank through a first oil pipe, a first check valve is arranged on the first oil pipe, an oil inlet is formed at one end of the first check valve close to the oil tank, the T oil port of the first two-position four-way solenoid valve and the T oil port of the second two-position four-way solenoid valve are communicated with an oil tank through a second oil pipe, the second oil pipe is provided with a second one-way valve, one end of the second one-way valve, which is close to the oil tank, is an oil outlet, the second oil pipe is provided with the generator, and the generator is arranged between the second one-way valve and the oil tank.
2. The method for recovering the vibration energy of the rear axle of the electric automobile according to claim 1, characterized in that: and in the step of reducing the distance measured in the time interval, controlling the first two-position four-way electromagnetic valve to be electrified and controlling the second two-position four-way electromagnetic valve to be deenergized.
3. The method for recovering the vibration energy of the rear axle of the electric automobile according to claim 1, characterized in that: and in the distance increasing step measured in the time interval, controlling the first two-position four-way electromagnetic valve to be powered off and controlling the second two-position four-way electromagnetic valve to be powered on.
4. The method for recovering the vibration energy of the rear axle of the electric automobile according to claim 1, characterized in that: the hydraulic control system is characterized by further comprising a first hydraulic control one-way valve and a second hydraulic control one-way valve, wherein an oil inlet of the first hydraulic control one-way valve is communicated with an oil inlet of the second one-way valve, an oil outlet of the first hydraulic control one-way valve is communicated with the first oil port, an oil inlet of the second hydraulic control one-way valve is communicated with an oil inlet of the second one-way valve, and an oil outlet of the second hydraulic control one-way valve is communicated with the second oil port.
5. The method for recovering the vibration energy of the rear axle of the electric automobile according to claim 1, characterized in that: and a first overflow valve is arranged between the first oil port and the oil tank, and a second overflow valve is arranged between the second oil port and the oil tank.
6. The method for recovering the vibration energy of the rear axle of the electric automobile according to claim 1, characterized in that: the distance detection device is installed on the rear axle, the control unit comprises a single chip microcomputer, a first relay connected in series with a coil S1 of the first two-position four-way electromagnetic valve and a second relay connected in series with a coil S2 of the second two-position four-way electromagnetic valve, and the single chip microcomputer is electrically and mechanically connected with the distance detection device, the first relay and the second relay.
7. The method for recovering the vibration energy of the rear axle of the electric automobile according to claim 6, characterized in that: in the step of the driving process of the electric automobile, the distance between the frame and the rear axle is measured through the distance detection device and transmitted to the single chip microcomputer, the single chip microcomputer is used for calculating a change value of the distance in a time interval, when the change value is a negative value, the single chip microcomputer is used for controlling the first relay to be electrified and controlling the second relay to be electrified, and when the change value is a positive value, the single chip microcomputer is used for controlling the first relay to be electrified and controlling the second relay to be electrified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811608007.6A CN109552040B (en) | 2018-12-27 | 2018-12-27 | Method for recovering vibration energy of rear axle of electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811608007.6A CN109552040B (en) | 2018-12-27 | 2018-12-27 | Method for recovering vibration energy of rear axle of electric automobile |
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| Publication Number | Publication Date |
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| CN109552040A CN109552040A (en) | 2019-04-02 |
| CN109552040B true CN109552040B (en) | 2021-05-14 |
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| CN201811608007.6A Active CN109552040B (en) | 2018-12-27 | 2018-12-27 | Method for recovering vibration energy of rear axle of electric automobile |
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| EP1878598A1 (en) * | 2006-07-13 | 2008-01-16 | Fondazione Torino Wireless | Regenerative suspension for a vehicle |
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| JP2010265800A (en) * | 2009-05-14 | 2010-11-25 | Shon-Fuu Han | Power generation structure |
| CN101865237A (en) * | 2010-07-01 | 2010-10-20 | 华中科技大学 | Vehicle Hydraulic Power Generation Shock Absorber |
| CN103009956A (en) * | 2012-12-31 | 2013-04-03 | 江苏大学 | Energy storage suspension device having vibration energy recovery function |
| CN104455166A (en) * | 2014-10-24 | 2015-03-25 | 北京长安汽车工程技术研究有限责任公司 | Automobile and hydraulic damping energy recovery device thereof |
| CN106150942A (en) * | 2015-03-27 | 2016-11-23 | 范斌 | Vibration type power generation device applied to vehicle suspension system |
| US9399380B1 (en) * | 2015-04-17 | 2016-07-26 | Ping Fan | Vibration-type electric generator applied to automobile suspension system |
| CN204877815U (en) * | 2015-07-20 | 2015-12-16 | 高永祥 | GYX shock absorber energy storage power generation facility |
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