CN203702474U - Damping power generation structure for automobile - Google Patents

Abstract

A shock-absorbing power generation structure for automobiles. A piezoelectric crystal power generation block is fixed on the vehicle frame. The piezoelectric crystal power generation block is bonded by a piezoelectric crystal sheet and an elastic metal sheet, and is insulated from the vehicle frame. Two shock-absorbing springs The ends are respectively installed on the axle and the piezoelectric crystal power generation block, the piston rod of the shock absorber is installed on the axle, the bottom of the shock absorber cylinder is installed on the piezoelectric crystal power generation block, and the output circuit of the piezoelectric crystal power generation block is connected in series through a rectifier Two supercapacitors, one normally open switch is connected in parallel to the two supercapacitors respectively. This structure converts the mechanical energy generated by the vibration into electric energy while absorbing the shock, and stores the electricity through the energy storage device to realize the full utilization of energy and achieve the purpose of energy saving; the structure of the cantilever beam itself can also achieve the effect of shock absorption, further It reduces the vibration of the car during driving and improves the ride comfort.

Description

A shock-absorbing power generation structure for a car

technical field

The utility model relates to a suspension system of an automobile, in particular to a shock absorber.

Background technique

A car suspension is a device that elastically connects the frame to the axle in a car. It is generally composed of shock-absorbing springs, guide mechanisms, shock absorbers and other components, and its main task is to ease the impact transmitted from the uneven road to the frame to improve the comfort of the car.

When passing through an uneven road surface, the shock-absorbing spring is used to filter the vibration of the road surface, but the shock-absorbing spring itself will have reciprocating motion, and the shock absorber installed in parallel with the shock-absorbing spring is mainly used to suppress the shock when the spring rebounds after absorbing shock and the shock from the road surface. shock. In order to attenuate the vibration, the shock absorber used in the automobile suspension system is mostly a hydraulic piston shock absorber. Its working principle is that when there is relative movement between the frame (or body) and the axle, the piston in the shock absorber Moving up and down, the oil in the shock absorber cavity will repeatedly flow from one cavity through different pores into another cavity.

Under normal circumstances, these vibration energies cannot be converted or stored in time and are wasted. With the popularization of automobile use, more and more energy is wasted.

The suspension system currently on the market still stays on the simple buffering and shock absorption function, and does not provide a good technical solution for converting mechanical energy into other energy.

Utility model content

The technical problem to be solved by the utility model is to provide an automobile shock-absorbing power generation structure, which can convert the mechanical energy of automobile vibration into electric energy and store it, which not only achieves the purpose of shock absorption, but also improves the utilization rate of energy. Energy saving effect.

The utility model is achieved through the following technical solutions:

A shock-absorbing power generation structure for an automobile, wherein a shock-absorbing spring and a shock absorber are connected in parallel between the axle and the vehicle frame of the automobile, and is characterized in that:

The piezoelectric crystal power generation block is electrically insulated and installed on the frame. The piezoelectric crystal power generation block is bonded by a piezoelectric crystal sheet and an elastic metal sheet, and the piezoelectric crystal sheet and the elastic metal sheet are electrically connected.

The two ends of the shock-absorbing spring are respectively installed on the axle and the piezoelectric crystal power generation block,

The piston rod of the shock absorber is installed on the axle, and the bottom of the shock absorber cylinder is installed on the piezoelectric crystal power generation block.

Electric insulation installation between the shock-absorbing spring and the piezoelectric crystal power generation block, between the shock absorber and the piezoelectric crystal power generation block,

The output circuit of the piezoelectric crystal power generation block connects two supercapacitors in series through a rectifier, and a normally open switch is connected in parallel with each of the two supercapacitors.

There is a type of crystal that, when squeezed or stretched, produces different charges at its ends. This effect is called piezoelectric effect. A crystal that can produce a piezoelectric effect is called a piezoelectric crystal.

The device combines shock absorbers, shock-absorbing springs and piezoelectric crystals to convert mechanical energy into electrical energy for reuse. There will be a large impact force in the vibration of the car, and the vibration generated by the impact force will be absorbed by the shock absorber and the shock-absorbing spring, accompanied by the generation of mechanical energy. At this time, since the bottom of the shock absorber cylinder and one end of the shock-absorbing spring are respectively connected to the piezoelectric crystal power generation block, the vibration of the shock absorber and the shock-absorption spring will be absorbed by the piezoelectric crystal power generation block, and the piezoelectric crystal will be compressed after being squeezed. A piezoelectric effect is produced, accompanied by charge generation. The piezoelectric crystal is connected with the capacitor, so that the charge generated by the piezoelectric crystal is stored in the form of electric energy, and then can be used as an energy source for other devices or mechanisms to achieve the purpose of energy saving.

In the above shock absorbing power generation structure, the function of the shock absorber itself is not affected, and because the shock absorber has the function of buffering and absorbing vibration, it can prevent the piezoelectric crystal from being damaged due to heavy pressure.

The piezoelectric crystal in the piezoelectric crystal power generation block generates alternating current during the process of being pressed or pulled, so it is necessary to convert the alternating current into direct current through a rectifier and then store it.

The energy storage device is two channeling supercapacitors. The supercapacitor stores the electrical energy generated by the extrusion of the piezoelectric crystal in the form of chemical energy and applies it to other devices or mechanisms in the form of electrical energy.

Further, the piezoelectric crystal sheet may be a single crystal piezoelectric crystal sheet, a polycrystalline piezoelectric crystal sheet or a semiconductor piezoelectric crystal sheet. It is preferably a rectangular piezoelectric ceramic sheet. A piezoelectric crystal sheet can be bonded with one or two elastic metal sheets to form a piezoelectric crystal power generation block. When bonding, the bottom surface and/or top surface of the piezoelectric crystal sheet and the elastic metal sheet Sheet bonding.

Furthermore, in order to achieve a better piezoelectric power generation effect, the thickness ratio of the elastic metal sheet to the piezoelectric crystal sheet is 1:1.

Still further, in order to improve the power generation efficiency of the piezoelectric crystal, the number of piezoelectric crystal sheets is 2 to 3, and an elastic metal sheet is arranged between two adjacent piezoelectric crystal sheets.

Still further, the rectifier is a diode rectifier, a thyristor rectifier or an inductor rectifier.

The beneficial effects of the utility model are:

1. Convert the mechanical energy generated by the vibration into electrical energy while absorbing the shock, and store the electricity through the energy storage device to realize the full utilization of energy and achieve the purpose of energy saving;

2. The piezoelectric crystal power generation block can absorb part of the vibration and achieve the effect of shock absorption, which further reduces the vibration feeling of the car during driving and improves the ride comfort;

3. The structure is relatively simple, which is conducive to popularization and application.

Description of drawings

Fig. 1 is the device installation schematic diagram of the present utility model

Figure 2 is a schematic diagram of the circuit connection

Figure 3, Figure 4, and Figure 5 are structural schematic diagrams of three types of piezoelectric crystal power generation blocks

In Figures 1 to 3: 1 is the axle, 2 is the frame, 3 is the shock-absorbing spring, 4 is the shock absorber, 5 is the piezoelectric crystal power generation block, 501 is the piezoelectric crystal sheet, 502 is the elastic metal sheet, and 6 is the rectifier , 7 is a supercapacitor, and 8 is a normally open switch.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, the piezoelectric crystal power generation block 5 is fixed on the vehicle frame 2, and the piezoelectric crystal power generation block 5 is formed by bonding a piezoelectric crystal sheet 501 and an elastic metal sheet 502, and is insulated from the vehicle frame 2. Electric conduction between the piezoelectric crystal sheet 501 and the elastic metal sheet 502, the two ends of the shock-absorbing spring 3 are respectively installed on the axle 1 and the piezoelectric crystal power generation block 5, the piston rod of the shock absorber 4 is installed on the axle 1, and the shock absorber 4. The bottom of the cylinder body is installed on the piezoelectric crystal power generation block 5. Electrical insulation is installed between the shock-absorbing spring 3 and the piezoelectric crystal power generation block 5, between the shock absorber 4 and the piezoelectric crystal power generation block 5.

As shown in FIG. 2 , the output circuit of the piezoelectric crystal power generation block 5 is connected in series with two supercapacitors 7 through a rectifier 6 , and a normally open switch 8 is connected in parallel with each of the two supercapacitors 7 . Wherein, the rectifier 6 is a diode rectifier.

As shown in FIG. 3 , the piezoelectric crystal sheet 501 is a rectangular piezoelectric ceramic sheet, and its bottom surface and/or top surface are bonded to the elastic metal sheet 502 . The thickness ratio of the elastic metal sheet 502 to the piezoelectric crystal sheet 501 is 1:1.

As shown in FIG. 5 , the number of piezoelectric crystal plates 501 is two, and an elastic metal plate 502 is arranged between two adjacent piezoelectric crystal plates 501 .

When the axle 1 is subjected to an external force, the axle 1 will vibrate, the shock absorber 4 absorbs the shock from the axle 1, and the shock-absorbing spring 3 is compressed or stretched so that the piezoelectric crystal sheet 501 is squeezed to produce a piezoelectric effect, resulting in Positive and negative charges are accumulated on the positive and negative plates respectively, and the piezoelectric crystal can be equivalent to a discharged capacitor at this time. When the charge accumulates to a certain amount, the amount of charge generated by the piezoelectric crystal is transmitted to the energy storage device through the wire in the form of electric current.

The elastic metal sheet 502 supports and conducts electricity to the piezoelectric crystal sheet 501 , so the entire piezoelectric crystal generating block 5 must be insulated from the vehicle frame 2 .

In the process of current delivery, the current first passes through the diode rectifier, and then is delivered to the super capacitor 7, and the super capacitor 7 is in a charged state, and the electric energy is stored in the super capacitor 7.

An energy storage structure in which two supercapacitors 7 are connected in series, on the one hand, when the storage capacity of one of the supercapacitors 7 reaches a saturated state, the electric energy generated by the piezoelectric crystal can also be stored through the other supercapacitor 7; on the other hand, when When one of the supercapacitors 7 is damaged or other conditions occur, the corresponding normally open switch 8 can be pressed to short-circuit the supercapacitor 7 to ensure the normal operation of the entire circuit. In addition, since the rated voltage of the supercapacitor 7 is relatively small, the series connection can function as a voltage division protection circuit.

In addition to rectification, the function of the diode rectifier can also prevent the discharge of the current of the supercapacitor from flowing back.

The effect of normally open switch 8 can be divided into two points. One is to ensure the normal operation of the circuit when one of the supercapacitors 7 is damaged, and the other is to short-circuit the saturated supercapacitor 7 first when the storage capacity of one of the supercapacitors 7 reaches saturation, so that the energy storage will not be affected. When the device is working, the supercapacitor 7 is replaced to ensure the energy storage process continues, and the replaced supercapacitor 7 can be used as a current source for other devices.

Claims (5)

1. A shock-absorbing power generation structure for an automobile, a shock-absorbing spring (3) and a shock absorber (4) are connected in parallel between the axle (1) and the frame (2) of the automobile, characterized in that: The piezoelectric crystal power generation block (5) is electrically insulated and installed on the frame (2). The piezoelectric crystal power generation block (5) is made of a piezoelectric crystal sheet (501) and an elastic metal sheet (502). The piezoelectric crystal sheet (501) and the elastic metal sheet (502) are electrically connected, Both ends of the shock-absorbing spring (3) are respectively installed on the axle (1) and the piezoelectric crystal power generation block (5), The piston rod of the shock absorber (4) is installed on the axle (1), and the bottom of the cylinder of the shock absorber (4) is installed on the piezoelectric crystal power generation block (5). Electric insulation installation between the shock-absorbing spring (3) and the piezoelectric crystal power generation block (5), between the shock absorber (4) and the piezoelectric crystal power generation block (5), The output circuit of the piezoelectric crystal power generation block (5) connects two supercapacitors (7) in series through a rectifier (6), and a normally open switch (8) is connected in parallel to the two supercapacitors (7). 2. The shock absorbing power generation structure of an automobile according to claim 1, characterized in that: the piezoelectric crystal sheet (501) is a rectangular piezoelectric ceramic sheet, and its bottom surface and/or top surface are in contact with the elastic metal sheet (502 ) bonding. 3. The automobile shock absorbing power generation structure according to claim 1, characterized in that: in the piezoelectric crystal power generation block (5), the thickness ratio of the elastic metal sheet (502) to the piezoelectric crystal sheet (501) is 1:1. 4. The automobile shock absorbing power generation structure according to claim 1, characterized in that: the number of said piezoelectric crystal sheets (501) is 2 to 3, and one piece is arranged between two adjacent piezoelectric crystal sheets (501) Flexible sheet metal (502). 5. The automobile shock absorbing power generation structure according to claim 1, characterized in that: the rectifier (6) is a diode rectifier, a thyristor rectifier or an inductor rectifier.