CN109578393B - Electric automobile rear axle energy recuperation device - Google Patents
Electric automobile rear axle energy recuperation device Download PDFInfo
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- CN109578393B CN109578393B CN201811608035.8A CN201811608035A CN109578393B CN 109578393 B CN109578393 B CN 109578393B CN 201811608035 A CN201811608035 A CN 201811608035A CN 109578393 B CN109578393 B CN 109578393B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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- General Engineering & Computer Science (AREA)
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- Analytical Chemistry (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention provides an energy recovery device for a rear axle of an electric automobile, which comprises a rear axle suspension frame unit, a hydraulic valve group unit, a control monitoring unit and an energy recovery unit, wherein the hydraulic valve group unit is connected with the control monitoring unit; the rear axle suspension unit comprises a hydraulic rod and a rear axle main body positioned below a frame of the electric automobile, the hydraulic rod comprises a cylinder barrel connected to the rear axle main body in a floating mode, a rodless cavity of the cylinder barrel is provided with a first oil port, and a rod cavity of the cylinder barrel is provided with a second oil port; the hydraulic valve group unit comprises a first two-position four-way electromagnetic valve and a second two-position four-way electromagnetic valve, and the control and monitoring unit comprises a single chip microcomputer, a first relay, a second relay and a distance detection device for measuring the distance between the rear axle main body and the electric automobile frame. By adopting the energy recovery device for the rear axle of the electric automobile, the vibration energy can be converted into electric energy, the endurance mileage of the electric automobile is improved, and meanwhile, the conversion efficiency is higher.
Description
Technical Field
The invention relates to the field of electric automobiles, in particular to an energy recovery device for a rear axle of an electric automobile.
Background
In the running process of the electric automobile, the up-and-down displacement between a frame and a rear axle of the electric automobile can be caused under the influence of factors such as uneven road surface, automobile acceleration and deceleration and the like, so that certain vibration energy is generated; the existing electric automobile generally carries out vibration reduction through a shock absorber, so that vibration energy cannot be effectively recycled, and the waste of vibration energy is caused. Therefore, it is necessary to design an energy recovery device to recover vibration energy and extend the driving range of the electric vehicle.
Disclosure of Invention
In view of the above circumstances, the present invention provides an energy recovery device for a rear axle of an electric vehicle, which can recover vibration energy.
In order to achieve the above object, the present invention discloses an energy recovery device for a rear axle of an electric vehicle, comprising:
the rear axle suspension unit comprises a hydraulic rod and a rear axle main body positioned below a frame of the electric automobile, wherein the hydraulic rod comprises a cylinder barrel and a piston rod arranged in the cylinder barrel in a sliding manner, the piston rod is connected to the frame in a floating manner, the cylinder barrel is connected to the rear axle main body in a floating manner, a rodless cavity and a rod cavity are formed in the cylinder barrel, a first oil port is formed in the rodless cavity of the cylinder barrel, and a second oil port is formed in the rod cavity of the cylinder barrel;
the hydraulic valve group unit comprises a first two-position four-way electromagnetic valve and a second two-position four-way electromagnetic valve, wherein 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 check valve is arranged on the first oil pipe, one end, close to the oil tank, of the first check valve is an oil inlet, an oil port T of the first two-position four-way electromagnetic valve and the 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 check valve is arranged on the second oil;
a control monitoring unit including a single chip microcomputer, a first relay, a second relay, and a distance detecting device for measuring a distance between the rear axle main body and the vehicle frame, the single chip microcomputer being electrically coupled to the first relay, the second relay, and the distance detecting device, the first relay being connected in series to a coil S1 of the first two-position four-way solenoid valve, the second relay being connected in series to a coil S2 of the second two-position four-way solenoid valve; and
and the energy recovery unit comprises a generator and a storage battery, the generator is arranged on the second oil pipe and is arranged between the second one-way valve and the oil tank, the generator comprises a rotating blade which is rotatably arranged in the second oil pipe, and the generator is electrically connected with the storage battery.
The invention has the beneficial effects that:
(1) during the driving process of an automobile, the frame and the rear axle main body can vibrate up and down to drive a piston rod in a hydraulic rod and a cylinder barrel to generate relative displacement, the distance between the frame and the rear axle main body is detected through a distance detection device, and the relative movement or the back-to-back movement between the frame and the rear axle main body is determined through a single chip microcomputer to control the opening and closing of a first relay and a second relay, so that the flowing path and the flowing direction of hydraulic oil are changed, and finally, the power generation is realized through a power generator.
(2) By converting the vibration energy into electric energy and storing the electric energy by using the storage battery, the recovery of the vibration energy is realized, and the endurance mileage of the electric automobile can be improved.
The invention further provides a further improvement of the energy recovery device of the rear axle of the electric automobile, wherein the rear axle main body comprises an upper shell and a lower shell which are connected in a welding manner, and a waist-shaped hole is formed in a welding seam between the upper shell and the lower shell. Through setting up waist shape hole, avoid taking place to warp among the welding process, influence rear axle main part and make and installation accuracy.
The invention further provides a further improvement of the energy recovery device of the rear axle of the electric automobile, wherein a reinforcing plate is fixedly arranged on the rear axle main body, and the cylinder barrel is connected to the reinforcing plate in a floating manner. Through setting up the reinforcing plate, increase lifting surface area reduces the pressure that rear axle main part unit area received to the life of extension rear axle main part.
The invention further improves the energy recovery device of the rear axle of the electric automobile, wherein the hydraulic valve group unit further comprises a first hydraulic control one-way valve and a second hydraulic control one-way valve, 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. When the pressure of oil outlets of the first hydraulic control one-way valve and the second hydraulic control one-way valve is larger than the pressure of oil inlets, the first hydraulic control one-way valve and the second hydraulic control one-way valve are conducted in a reverse direction, oil drainage is achieved, and bursting caused by overlarge oil pressure in an oil pipe is avoided.
The invention further improves the energy recovery device 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 hydraulic valve bank unit has the advantages that the pressure limiting effect is achieved, the hydraulic valve bank unit and the hydraulic rod are prevented from working under the high-pressure condition due to the fact that the oil pressure is too large, and the service life is prolonged.
The invention further improves the energy recovery device of the rear axle of the electric automobile, wherein the distance detection device is an ultrasonic distance measurement sensor, a laser distance measurement sensor or an infrared distance measurement sensor.
The invention further provides a further improvement of the energy recovery device for the rear axle of the electric automobile, wherein a buffer spring is arranged in a rodless cavity of the cylinder barrel. The buffer spring is utilized to realize the transmission of the acting force, the damping effect is realized, and the overlarge instant stress is avoided when the hydraulic rod is reversed.
The invention further improves the energy recovery device of the rear axle of the electric automobile, and two symmetrically arranged hydraulic rods are arranged between the frame and the rear axle main body.
Drawings
Fig. 1 is a schematic diagram of an energy recovery device for a rear axle of an electric vehicle.
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, the invention discloses an energy recovery device for a rear axle of an electric vehicle, which comprises a rear axle suspension unit, a hydraulic valve group unit, a control monitoring unit and an energy recovery unit; the rear axle suspension unit comprises a rear axle main body 12 and a hydraulic rod 13, wherein the rear axle main body 12 and the hydraulic rod 13 are positioned below a frame 11 of the electric automobile, the hydraulic rod 13 comprises a cylinder barrel and a piston rod arranged in the cylinder barrel in a sliding mode, the piston rod is connected to the frame 11 of the electric automobile in a floating mode, the cylinder barrel is connected to the rear axle main body 12 in a floating mode, a rod cavity 131 and a rodless cavity 132 are formed in the cylinder barrel, a first oil port is formed in the rodless cavity 132 of the cylinder barrel, and a second oil port is; the hydraulic valve group unit comprises a first two-position four-way electromagnetic valve 21 and a second two-position four-way electromagnetic valve 22, an oil port B of the first two-position four-way electromagnetic valve 21 is communicated with a first oil port, an oil port A of the second two-position four-way electromagnetic valve 22 is communicated with a second oil port, an oil port P of the first two-position four-way electromagnetic valve 21 and an oil port P of the second two-position four-way electromagnetic valve 22 are communicated with the oil tank 6 through a first oil pipe 31, a first check valve 23 is arranged on the first oil pipe 31, one end, close to the oil tank 6, of the first check valve 23 is an oil inlet, an oil port T of the first two-position four-way electromagnetic valve 21 and an oil port T of the second two-position four-way electromagnetic valve 22 are communicated with the oil tank 6 through a second oil pipe 32; the control monitoring unit comprises a single chip microcomputer, a first relay, a second relay and a distance detection device 4 for measuring the distance between the rear axle main body 12 and the electric automobile frame 11, the single chip microcomputer is electrically connected with the first relay, the second relay and the distance detection device 4, the first relay is connected with a coil S1 of the first two-position four-way electromagnetic valve 21 in series, and the second relay is connected with a coil S2 of the second two-position four-way electromagnetic valve 22 in series; the energy recovery unit comprises a generator 51 and a storage battery 52, the generator 51 is arranged on the second oil pipe 32, the generator 51 is arranged between the second one-way valve 24 and the oil tank 6, the generator 51 comprises a rotating blade rotatably arranged in the second oil pipe 32, and the generator 51 is electrically connected with the storage battery 52. In this embodiment, (1) the vibration energy is converted into electric energy, and the storage battery 52 is used for storage, so that the recovery of the vibration energy is realized, and the endurance mileage of the electric vehicle is improved. (2) The piston rod is connected with the frame 11 in a floating mode, the cylinder barrel is connected with the rear axle main body 12 in a floating mode, the problems of eccentricity and poor balance precision during installation of the hydraulic rod 13 are solved, abrasion of a sealing piece and the piston rod in the hydraulic rod 13 is reduced, the working performance of the hydraulic rod 13 is guaranteed, and the service life is prolonged; specifically, the piston rod is connected to the frame 11 through a first floating joint, and the cylinder is connected to the rear axle body 12 through a second floating joint. (3) The distance between the frame 11 and the rear axle main body 12 is monitored in real time by the distance detection device 4 and is transmitted to the singlechip, when the distance is reduced (the piston rod moves downwards), the singlechip controls the first relay to be electrified and the second relay to be deenergized, so that the coil S1 of the first two-position four-way solenoid valve 21 is electrified and the coil S2 of the second two-position four-way solenoid valve 22 is deenergized, so that the hydraulic oil in the rodless cavity 132 flows back to the oil tank 6 through the first oil port, the first two-position four-way solenoid valve 21, the second oil pipe 32 and the generator 51, under the action of flowing hydraulic oil, the rotating blades in the generator 51 rotate to generate electricity, and the storage of electric energy is realized by the storage battery 52, and simultaneously, the volume in the rod cavity 131 is increased, under the action of atmospheric pressure, hydraulic oil in the oil tank 6 is sucked into the rod cavity 131 through the first check valve 23, the first oil pipe 31, the second two-position four-way solenoid valve 22 and the second oil port; on the contrary, when the distance is reduced (the piston rod moves upwards), the singlechip controls the second relay to be powered on and the first relay to be powered off, so that the coil S1 of the first two-position four-way solenoid valve 21 is powered off and the coil S2 of the second two-position four-way solenoid valve 22 is powered on, and further, the hydraulic oil in the rod cavity 131 flows back to the oil tank 6 through the second oil port, the second two-position four-way solenoid valve 22, the second oil pipe 32, the second check valve 24 and the generator 51, so as to drive the generator 51 to generate electricity and store electricity of the storage battery 52, and meanwhile, the volume in the rodless cavity 132 is increased, and under the action of atmospheric pressure, the hydraulic oil in the oil tank 6 is sucked into the rodless cavity 132 through the first check valve 23, the first oil pipe 31, the first. (4) Simple structure, the cost is lower, and the conversion rate with vibration energy conversion for the electric energy is higher simultaneously, has realized the recovery of vibration energy. (5) Through set up first check valve 23 on first oil pipe 31, set up second check valve 24 on second oil pipe 32, can guarantee that the piston rod reciprocates the in-process, the hydraulic oil of discharge all arranges to the oil tank 6 in through generator 51 among the hydraulic stem 13, hydraulic oil in the oil tank 6 all inhales hydraulic stem 13 through first check valve 23 and first oil pipe 31, thereby guarantee that the piston rod moves up and down (including between frame 11 and the rear axle body relatively or compare the motion) the in-process all can generate electricity, the conversion efficiency of vibration energy has been improved.
Further, the rear axle main body 12 includes an upper shell and a lower shell which are connected by welding, and a waist-shaped hole 121 is formed at a welding seam between the upper shell and the lower shell. In this embodiment, the waist-shaped hole 121 is formed in the welding seam, so that the deformation of the rear axle main body 12 caused by stress concentration in the welding process can be avoided, and the assembly (precision) of the rear axle main body 12 is further influenced.
Furthermore, a reinforcing plate is fixedly arranged on the rear axle main body 12, and the cylinder barrel is connected to the reinforcing plate in a floating manner. In this embodiment, through setting up the reinforcing plate, increase the area of contact between hydraulic stem 13 and the rear axle main part 12 to reduce the pressure that rear axle main part 12 contact surface received, avoid pressure too big to lead to rear axle main part 12 to take place to warp, with the life of extension rear axle main part 12.
Further, the hydraulic valve group unit further comprises a first hydraulic control check valve 25 and a second hydraulic control check valve 26, an oil inlet of the first hydraulic control check valve 25 is communicated with an oil inlet of the second check valve 24, an oil outlet of the first hydraulic control check valve 25 is communicated with the first oil port, an oil inlet of the second hydraulic control check valve 26 is communicated with an oil inlet of the second check valve 24, and an oil outlet of the second hydraulic control check valve 26 is communicated with the second oil port. In the embodiment, (1) when the vehicle frame 11 and the rear axle main body 12 move relatively, that is, the piston rod moves downward, and when the oil pressure at the oil outlet of the first hydraulic control one-way valve 25 is greater than the oil pressure at the oil inlet of the first hydraulic control one-way valve 25, the first hydraulic control one-way valve 25 is conducted reversely, so that a shunting effect (oil pipe bursting caused by excessive oil pressure) is realized, the oil pressure of the first oil port is reduced, the first two-position four-way electromagnetic valve 21 is prevented from being broken due to excessive oil pressure, meanwhile, the throttling loss of the first two-position four-way electromagnetic valve 21 when the hydraulic oil passes is; (2) when deviating from mutually between frame 11 and rear axle main part 12 (piston rod upward movement promptly), when second hydraulic control check valve 26 oil-out oil pressure is greater than second hydraulic control check valve 26 oil inlet oil pressure, second hydraulic control check valve 26 reverse conduction realizes the reposition of redundant personnel effect, reduces the oil pressure of second hydraulic fluid port, avoids the too big second two-position four-way solenoid valve 22 that leads to of oil pressure to break down, reduces the throttle loss when second two-position four-way solenoid valve 22 crosses hydraulic oil simultaneously, improves the conversion of vibration energy.
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 relief valve 27 and the second relief valve 28 are provided to perform a pressure limiting safety function and simultaneously set the system pressure of the entire apparatus.
Further, a filter is arranged at the oil inlet of the first check valve 23. In this embodiment, through setting up the filter, avoid the large granule impurity in the oil tank 6 to get into among hydraulic stem 13, first two-position four-way solenoid valve 21, second two-position four-way solenoid valve 22 and the generator 51 and cause the trouble, guarantee the normal work of system, increase of service life.
Further, the distance detection device 4 is an ultrasonic distance measurement sensor, a laser distance measurement sensor or an infrared distance measurement sensor. The distance detection device 4 in this embodiment is the prior art, and has high detection and high sensitivity.
Further, a buffer spring is provided in the rodless chamber 132 of the cylinder. In the embodiment, the buffer spring is used for realizing the transmission of the acting force, so that the vibration reduction effect is realized, and the damage to the hydraulic rod 13 caused by the overlarge instant acting force when the hydraulic rod 13 is reversed is avoided.
In the invention, symmetrically arranged hydraulic rods 13 are arranged between the frame 11 and the rear axle main body 12. Stability in the driving process of the electric automobile can be improved by arranging the hydraulic rod 13, and meanwhile, the conversion efficiency of vibration energy is further improved.
According to the invention, the distance between the frame 11 and the rear axle main body 12 at different time intervals is measured by the distance detection device 4 and is transmitted to the single chip microcomputer, the distance change value in the time intervals is calculated by the single chip microcomputer, when the distance change 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, when the distance change 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, so that the flowing path and direction of hydraulic oil in the whole device are accurately adjusted, the generator 51 can be used for generating electricity regardless of relative movement or back-to-back movement between the frame 11 and the rear axle main body 12, and the conversion efficiency.
The invention discloses an energy recovery device for a rear axle of an electric automobile, which has the beneficial effects that:
1. the energy recovery device has the advantages that the vibration energy of the rear axle main body in the driving process of the electric automobile is converted into electric energy, the recovery of the vibration energy is realized, and the energy recovery device has higher conversion efficiency.
2. Through connecting the frame with the piston rod is floated, with the cylinder floating connection in rear axle main part, take place the problem that eccentricity, equilibrium degree precision are bad when avoiding the installation of hydraulic stem, reduce the wearing and tearing of sealing member in piston rod and the hydraulic stem, and then guarantee the working property of hydraulic stem, increase of service life
3. Simple structure, the cost is lower, through getting up vibration energy conversion electric energy storage, has prolonged electric automobile's continuation of the journey mileage.
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 (9)
1. The utility model provides an electric automobile rear axle energy recuperation device which characterized in that includes:
the rear axle suspension unit comprises a hydraulic rod and a rear axle main body positioned below a frame of the electric automobile, wherein the hydraulic rod comprises a cylinder barrel and a piston rod arranged in the cylinder barrel in a sliding manner, the piston rod is connected to the frame in a floating manner, the cylinder barrel is connected to the rear axle main body in a floating manner, a rodless cavity and a rod cavity are formed in the cylinder barrel, a first oil port is formed in the rodless cavity of the cylinder barrel, and a second oil port is formed in the rod cavity of the cylinder barrel;
the hydraulic valve group unit comprises a first two-position four-way electromagnetic valve and a second two-position four-way electromagnetic valve, wherein 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 check valve is arranged on the first oil pipe, one end, close to the oil tank, of the first check valve is an oil inlet, an oil port T of the first two-position four-way electromagnetic valve and the 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 check valve is arranged on the second oil;
a control monitoring unit including a single chip microcomputer, a first relay, a second relay, and a distance detecting device for measuring a distance between the rear axle main body and the vehicle frame, the single chip microcomputer being electrically coupled to the first relay, the second relay, and the distance detecting device, the first relay being connected in series to a coil S1 of the first two-position four-way solenoid valve, the second relay being connected in series to a coil S2 of the second two-position four-way solenoid valve; and
and the energy recovery unit comprises a generator and a storage battery, the generator is arranged on the second oil pipe and is arranged between the second one-way valve and the oil tank, the generator comprises a rotating blade which is rotatably arranged in the second oil pipe, and the generator is electrically connected with the storage battery.
2. The energy recovery device for the rear axle of the electric automobile according to claim 1, characterized in that: the rear axle main body comprises an upper shell and a lower shell which are connected in a welding mode, and a waist-shaped hole is formed in the welding seam between the upper shell and the lower shell.
3. The energy recovery device for the rear axle of the electric automobile according to claim 1, characterized in that: the rear axle body is fixedly provided with a reinforcing plate, and the cylinder barrel is connected to the reinforcing plate in a floating mode.
4. The energy recovery device for the rear axle of the electric automobile according to claim 1, characterized in that: the hydraulic valve group unit further comprises a first hydraulic control one-way valve and a second hydraulic control one-way valve, 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 energy recovery device for 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 energy recovery device for the rear axle of the electric automobile according to claim 1, characterized in that: and a filter is arranged at an oil inlet of the first one-way valve.
7. The energy recovery device for the rear axle of the electric automobile according to claim 1, characterized in that: the distance detection device is an ultrasonic distance measurement sensor, a laser distance measurement sensor or an infrared distance measurement sensor.
8. The energy recovery device for the rear axle of the electric automobile according to claim 1, characterized in that: and a buffer spring is arranged in a rodless cavity of the cylinder barrel.
9. The rear axle energy recovery device of the electric vehicle according to any one of claims 1 to 8, characterized in that: two symmetrically arranged hydraulic rods are arranged between the frame and the rear axle main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811608035.8A CN109578393B (en) | 2018-12-27 | 2018-12-27 | Electric automobile rear axle energy recuperation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811608035.8A CN109578393B (en) | 2018-12-27 | 2018-12-27 | Electric automobile rear axle energy recuperation device |
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| CN109578393A CN109578393A (en) | 2019-04-05 |
| CN109578393B true CN109578393B (en) | 2020-01-14 |
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| CN110197882A (en) * | 2019-07-03 | 2019-09-03 | 扬州道爵新能源发展有限公司 | Intelligent new-energy automobile with outdoor charge function |
| CN110645235B (en) * | 2019-09-30 | 2022-04-08 | 中国石油集团川庆钻探工程有限公司 | Output device of downhole operation tool |
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- 2018-12-27 CN CN201811608035.8A patent/CN109578393B/en active Active
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| CN201884536U (en) * | 2010-12-23 | 2011-06-29 | 袁涌 | Piezoelectric type energy-recovery shock absorber |
| KR20130044677A (en) * | 2011-10-24 | 2013-05-03 | 한국과학기술원 | Tidal current generator using self-excited oscillation energy |
| CN202451682U (en) * | 2012-03-08 | 2012-09-26 | 王云龙 | Hydraulic vibration energy recovery shock absorber |
| CN102632803A (en) * | 2012-05-03 | 2012-08-15 | 杨和利 | Novel hydraulic energy-regenerative damping system |
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