CN103670983B - A kind of vehicle vibration power generation device - Google Patents

Abstract

The invention relates to a vehicle vibration power generation device, which uses a cantilever beam and a ratchet wheel as a vibration pickup mechanism, a one-way bearing and a gear set as a vibration mechanical energy transmission mechanism, a DC permanent magnet generator as an electromechanical energy conversion mechanism, and an electric energy generator with a USB interface. The processing circuit processes the irregular AC power to realize the power supply for the on-board electronic equipment. The invention uses the cantilever beam and the ratchet mechanism to pick up the vibration, converts the linear motion in the vertical direction during the operation of the vehicle into a rotary motion, and then drives the low-damping permanent magnet DC generator to work through a high-efficiency one-way gear mechanism. Ordinary linear vibration power generation device can significantly improve the transmission and conversion efficiency of vibration mechanical energy. The invention generates electricity from renewable energy, has high vibration pickup efficiency, energy transfer and conversion efficiency, and long working life, adopts a USB interface and is suitable for most vehicle-mounted electronic devices, and has strong versatility.

Description

A vehicle vibration generator

technical field

The invention relates to the technology of converting the mechanical energy of vehicle vibration into electric energy, in particular to a cantilever beam and ratchet type vibration pickup mechanism, a one-way bearing and a one-way transmission mechanism of a gear set, a DC permanent magnet generator, an electric energy processing circuit device and its realization The method specifically adopts a cantilever beam, a load, an arc-shaped rack, a ratchet, a one-way bearing, a gear set, a DC permanent magnet generator, a power processing circuit with a USB interface, a magnetic attraction, and a casing to realize the vibration of the vehicle during driving. A device that converts mechanical energy into electrical energy.

Background technique

Vehicles are becoming more and more popular in life and production, and the applications of related portable electronic devices are also increasing, such as: car navigators, driving recorders, handheld electronic devices for drivers and passengers, etc. These electronic devices mainly rely on on-board power supply or built-in Batteries provide electricity, which has a number of disadvantages:

1. The use of on-board power supply requires the output of electric energy by the car generator, which will increase the fuel consumption of the vehicle. In today's high oil price, it is obviously not economical and increases environmental pollution.

2. Portable electronic devices powered by batteries have a short battery life and need to carry charging equipment, and the use of batteries also causes pollution.

3. Many vehicle-mounted portable electronic devices are powered by USB power supply. The original vehicle power supply needs to be connected to an external power converter to convert the 12V cigarette lighter power supply to USB power supply. The secondary power supply efficiency is low and the cost is high.

4. Messy power cords affect the cleanliness and beauty of the car.

There will be obvious vibration when the vehicle is running on the road. There is a wealth of vibration mechanical energy in the working environment of related electronic equipment. A vehicle vibration power generation device can convert the vibration mechanical energy of the vehicle into electrical energy to solve the power supply problem of these electronic equipment. .

Contents of the invention

The purpose of the present invention is to provide a device for generating electricity by using vehicle vibration to address the shortcomings of the current power supply technology for portable electronic equipment in vehicles. The device adopts the cantilever beam and ratchet as the vibration picking mechanism, the one-way bearing and gear set as the vibration mechanical energy transmission mechanism, the DC permanent magnet generator as the electromechanical energy conversion mechanism, and the power processing circuit with USB interface to process irregular AC power. , to realize power supply for vehicle electronic equipment. The invention uses the cantilever beam and the ratchet mechanism to pick up the vibration, converts the linear motion in the vertical direction during the operation of the vehicle into a rotary motion, and then drives the low-damping permanent magnet DC generator to work through a high-efficiency one-way gear mechanism. Ordinary linear vibration power generation device can significantly improve the transmission and conversion efficiency of vibration mechanical energy. The invention generates electricity from renewable energy, has high vibration pickup efficiency, energy transfer and conversion efficiency, and long working life, adopts a USB interface and is suitable for most vehicle-mounted electronic devices, and has strong versatility.

Technical scheme of the present invention is:

A vehicle vibration power generation device, the device is a box structure, the shape is a cube; inside the box, a magnetic attraction is fixed on the top and bottom respectively; the DC permanent magnet generator, shaft 1, and shaft 2 are all fixed to the box by screws On the inner wall of the same bottom plate, the level of the DC permanent magnet generator, shaft 1, and shaft 2 is the same or similar; the gear 3 is fixed on the shaft of the DC permanent magnet generator through interference fit, and the gear 2 is fixed through interference fit On the bearing of shaft two, gear one and ratchet are fixed on the one-way bearing of shaft one through interference fit, wherein gear one is riveted and fixed on the ratchet and rotates coaxially; at the same time, gear three and gear two are engaged together, Gear 2 is engaged with gear 1; the arc-shaped rack and load are fixed on the movable end of the cantilever beam, and the fixed end of the cantilever beam is fixed on the inner wall of the left side plate of the box; the fixed end of the cantilever beam is on the same level as shaft 1. The cantilever beam and the ratchet are at the same distance from the bottom plate of the box body; the power processing circuit with a USB interface is fixed on the inner wall of the box, and is connected with the stator winding of the DC permanent magnet generator through wires.

The cantilever beam is a rectangular sheet, the fixed end of the cantilever beam is fixed on the inner wall of the left side plate of the box body, and the load and the arc-shaped rack are fixed on the movable end of the cantilever beam by screws; the arc-shaped rack and the ratchet have the same die number and pressure angle.

The second gear is a compound gear, and its composition includes: a spur gear of the second gear, a bevel gear of the second gear and a center hole of the second gear, the spur gear of the second gear is under the bevel gear of the second gear, and the second gear is integrally cast; The third gear is a bevel gear, which meshes with the bevel gear of the second gear. The diameter of the pitch circle of the third gear is smaller than the diameter of the pitch circle of the bevel gear of the second gear. The pitch circle diameter of the spur gear two is smaller than the pitch circle diameter of the gear one.

The composition of described electric energy processing circuit with USB interface comprises capacitor filter circuit, supercapacitor energy storage circuit, DC-DC power supply module, USB interface, and its connection relation is capacitor filter circuit, supercapacitor energy storage circuit, DC-DC power supply The module and the USB interface are cascaded in sequence, the two ends of the capacitor filter circuit are the input ends of the power processing circuit with the USB interface, and are connected with the stator winding, and the USB interface outputs electric energy to the outside.

The present invention is based on the cantilever beam and the ratchet vibration pickup mechanism, the gear mechanical energy transmission mechanism, the electromechanical energy conversion mechanism of the DC permanent magnet generator, and the electric energy processing circuit with the USB interface to supply power to the vehicle-mounted portable electronic equipment, and convert the vibration mechanical energy during the driving of the vehicle into Electric energy, after electric energy processing, electric energy storage, and electric energy conversion, a stable DC output is realized to supply power for vehicle-mounted portable electronic devices.

The vibration pickup mechanism adopting the cantilever beam and the ratchet structure of the present invention has high vibration pickup efficiency; the gear mechanical energy transmission mechanism has high energy transmission efficiency; the DC permanent magnet generator has high electromechanical conversion efficiency, low starting torque, and small positioning force Advantages, good dynamic characteristics; power processing circuit adopts micro-power consumption design, low power consumption, and USB interface design, good versatility; magnetic fixation method can be easily adsorbed in the car, and can also be directly placed vertically In the car, easy to use. It has the following advantages:

1) Reduce the dependence of on-board portable electronic devices on the on-board power supply, reduce fuel consumption, and be environmentally friendly.

2) There is no need to lead many power lines from the cigarette lighter to the vehicle portable electronic equipment, keeping the environment in the vehicle clean and beautiful.

3) Since the vibration of the vehicle is a renewable energy source, the present invention can supply power to the vehicle-mounted portable electronic equipment for a long time, and the working time is long.

4) The USB interface design is adopted, which has good versatility, avoids the secondary conversion of the power supply, and has high power supply efficiency.

Description of drawings

Fig. 1 is a structural front view of a vehicle vibration power generation device.

Among them, 1-box, 2-lower magnetic attraction, 3-power processing circuit with USB interface, 4-gear three, 5-DC permanent magnet generator, 6-gear two, 7-shaft two, 8-ratchet, 9-gear one, 10-axis one, 11-curved rack, 12-load, 13-cantilever beam, 14-upper magnetic attraction.

Figure 2 is a structural diagram of the box. Wherein, 21-lower side plate, 22-right side plate, 23-bottom plate, 24-upper side plate, 25-left side plate.

Figure 3 is a structural diagram of gear two. Wherein, the spur gear of 31-gear two, the bevel gear of 32-gear two, the middle hole of 33-gear two.

Fig. 4 is a circuit diagram of power processing with USB interface.

Fig. 5 is a schematic diagram of the operation of a vehicle vibration power generation device.

Detailed ways

The present invention uses a cantilever beam and a ratchet as a vibration pickup device, uses a one-way bearing and a gear set as an energy transmission device, uses a DC permanent magnet generator as an electromechanical energy conversion device, and uses a power processing circuit with a USB port as a power processing device. Vehicle vibration power generation devices generally include: shell, cantilever beam, load, ratchet, one-way bearing, gear set, DC permanent magnet generator, power processing circuit (including: filter circuit, super capacitor energy storage circuit, DC-DC power supply module, USB port).

The vibration during the driving of the vehicle acts on the shell of the vehicle vibration power generation device. The vibration of the shell makes the cantilever beam swing up and down. When the cantilever beam swings, it drives the arc-shaped rack to swing up and down. When the arc-shaped rack swings down, it pushes the ratchet to rotate counterclockwise. , when the arc-shaped rack swings upwards, due to the limitation of the shaft one-way bearing, the ratchet does not move, and finally the ratchet can only rotate counterclockwise in one direction. The ratchet and gear one are fixed together, and the gear one and the ratchet rotate counterclockwise synchronously. When one rotates counterclockwise, it drives the spur gear of gear two that engages with it to rotate clockwise. The bevel gear of gear two and the spur gear of gear two rotate clockwise synchronously. When the bevel gear of gear two rotates clockwise, it drives the gear three that engages with it. Rotating counterclockwise, the rotor and gear three of the DC permanent magnet generator are fixed on the shaft of the DC permanent magnet generator. When the gear three rotates, it drives the rotor of the DC permanent magnet generator to rotate synchronously. Due to electromagnetic induction, the DC permanent magnet generator Unstable DC power is generated in the stator winding, and the DC power is processed by the power processing circuit with USB port, and a stable 5V DC power is output through the USB port.

The present invention is described below in conjunction with accompanying drawing, but they do not limit the present invention in any way.

Example 1

The structural diagram of the vehicle vibration power generation device is shown in Figure 1. The device is a box structure with a cubic shape; in the box, the top and bottom are respectively fixed with a magnetic attraction 2 and a magnetic attraction 14; the DC permanent magnet generator 5, the shaft The first 10 and the second shaft 7 are all fixed on the inner wall of the same box bottom plate 23 by screws, wherein the level heights of the DC permanent magnet generator 5, the first shaft 10 and the second shaft 7 are the same or similar; the third gear 4 is through interference fit Fixed on the shaft of DC permanent magnet generator 5, gear two 6 is fixed on the bearing of shaft two 7 through interference fit, gear one 9 and ratchet 8 are fixed on the one-way bearing of shaft one 10 through interference fit, wherein , gear one 9 is riveted and fixed on the ratchet 8 and rotates coaxially; at the same time, gear three 4 and gear two 6 are meshed together, and gear two 6 and gear one 9 are meshed together; arc-shaped rack 11 and load 12 are fixed on the cantilever The movable end of the beam 13 and the fixed end of the cantilever beam 13 are fixed on the inner wall of the left side plate of the box; the fixed end of the cantilever beam 13 is on the same level as the shaft 10, and the distance between the cantilever beam 13 and the ratchet 8 from the bottom plate 23 of the box body is the same . When the vehicle vibrates, the cantilever beam 13 drives the arc-shaped rack 11 to swing up and down.

Described box body is shown in Figure 2, and the composition of box body comprises lower side plate 21, right side plate 22, bottom plate 23, upper side plate 24, left side plate 25, and magnetic suction 2,14 is respectively fixed on box body 1 The lower side plate 21, the inner wall of the upper side plate 24, the box body 1 is fastened by the end cover to realize full closure.

The cantilever beam 13 is a rectangular sheet, the fixed end of the cantilever beam 13 is fixed on the inner wall of the box body left side plate 25, and the load 12 and the arc rack 11 are fixed on the movable end of the cantilever beam 13 by screws. The arc rack 11 and the ratchet 8 have the same modulus and pressure angle.

Described gear two is as shown in Figure 3, and gear two 6 is compound gear, and composition comprises: the spur gear 31 of gear two, the bevel gear 32 of gear two and the middle hole 33 of gear two, the spur gear 31 of gear two is in gear two Below the bevel gear 32 of the gear 2, the gear 2 6 is integrally cast; the gear 3 4 is a bevel gear, which is engaged with the bevel gear 42 of the gear 2 6, and the diameter of the pitch circle of the gear 3 4 is smaller than that of the bevel gear 32 of the gear 2 6 The pitch circle diameter of gear two, the spur gear 31 of gear two and spur gear one 9 mesh together, and the spur gear 31 pitch circle diameter of gear two is less than the pitch circle diameter of gear one 9.

The power processing circuit 3 with a USB interface is fixed on the inner wall of the box, and is connected with the stator winding of the DC permanent magnet generator 5 through wires.

The power processing circuit with a USB interface is shown in FIG. 4 . The circuit is located inside the box. The power processing circuit consists of a capacitor filter circuit, a super capacitor energy storage circuit, a DC-DC power supply module, and a USB interface. The connection relationship is the capacitor filter circuit, super capacitor energy storage circuit, and DC-DC power supply module. , USB interfaces are sequentially cascaded, the two ends of the capacitor filter circuit are the input terminals of the power processing circuit with the USB interface, and are connected with the stator winding, and the USB interface outputs electric energy to the outside.

Among them, the induction current (unstable direct current) of the stator winding of the DC permanent magnet generator 5 is transmitted to the power processing circuit 3 by the input terminal Vin, and the two wires of the input terminal Vin are respectively connected to nodes E and D (the nodes mentioned in the text are wires If multiple connection points are connected by wires, these connection points shall use the same node number).

The capacitor filter circuit is composed of a capacitor C1, and the two ends of the capacitor C1 are connected to node E and node D respectively.

The composition of the supercapacitor energy storage circuit includes: an anti-reverse charge diode D1, a supercapacitor C2, a supercapacitor C3, and a supercapacitor C4. Supercapacitors C2, C3, and C4 are connected in series in sequence to store electrical energy. The positive and negative poles of the anti-reverse charge diode D1 are respectively connected to the nodes E and F to prevent the supercapacitors C2, C3, and C4 from leaking electricity to the input terminals.

The DC-DC power supply module can output power within a certain voltage range in a stable voltage. The input terminals of the DC-DC power supply module are connected to nodes F and D, and the output terminals are connected to the USB interface.

The specific materials and devices used in this embodiment are:

The shell is made of aluminum alloy plate with a thickness of 3mm, and the end cover and the box body are connected by buckles. The end cover is 160mm long, 110mm wide, and the box body is 160mm long, 110mm wide, and 30mm high;

The magnetic suction adopts Funi brand circular magnetic suction, with a diameter of 36mm and a height of 8mm;

The DC permanent magnet generator is a 130 long-axis carbon brush motor with a length of 25mm, a thickness of 20mm, and a height of 15mm. The shaft diameter of the motor is 2mm. The length of the shaft: the front end is 19mm and the rear end is 9mm. at the bottom of the box.

Gear 1, gear 2, gear 3, ratchet, curved rack, and load materials are all PVDF.

Gear one is a spur gear, and its parameters are: the number of teeth is 24, the modulus is 6, the thickness is 5 mm, and the aperture is 6 mm.

Gear 2 is a compound gear composed of spur gear and bevel gear. The spur gear parameters of gear 2 are: number of teeth 12, modulus 6, thickness 5mm, aperture 5mm. The parameters of bevel gear 2 are: number of teeth 18, module 6, thickness 8mm, aperture 5mm.

The third gear is a bevel gear, and its parameters are: number of teeth 6, module 4, thickness 8mm, aperture 2mm.

The fixed shaft material of shaft 1 and shaft 2 is stainless steel, the fixed shaft of shaft 1 has a diameter of 3 mm and a length of 10 mm, and the fixed shaft of shaft 2 has a diameter of 2 mm and a length of 10 mm; shaft 1 is a one-way bearing, the model is HF0306, and the inner diameter is 3 mm , Outer diameter 6.5mm, height 6mm; The bearing model of shaft two is NMB brand, bearing inner diameter 2mm, outer diameter 5mm, height 2.5mm; The bearing is fixed on the fixed shaft through interference fit. The composition of the first shaft, the second shaft and the third shaft includes fixed shafts and bearings, and the positions of the shafts are reasonably distributed according to the size of the gears.

The ratchet adopts a triangular tooth shape, and the relevant parameters are: number of teeth 24, tooth height 2mm, tooth groove angle 60°, modulus 2, top circle outer diameter 48mm, inner circle diameter 6mm, thickness 3mm. The ratchet and gear one are riveted together, and are fixed on the one-way bearing of the shaft one through interference fit.

The arc-shaped rack adopts a triangular tooth shape, and the relevant parameters are: number of teeth 8, tooth height 2mm, slot angle 60°, modulus 2, thickness 5mm, inner diameter 60mm.

The cantilever beam is made of spring steel, and the size of the cantilever beam is 25mm long, 10mm wide, and 2mm thick.

The load size is 15mm in length, 15mm in width, and 10mm in thickness.

The components used in the power processing circuit are as follows: the filter capacitor C1 is a 470μF electrolytic capacitor; the type of the diode D1 is IN4001; the supercapacitors C2, C3, and C4 are 2F supercapacitors; the model of the DC-DC power supply module is LM2596S-ADJ; ;

A schematic diagram of the operation of a vehicle vibration power generation device is shown in Figure 5. The vibration of the vehicle acts on the box of the power generation device. The box drives the cantilever beam fixed on the inner wall of the left side plate of the box to swing up and down around the fixed end of the cantilever beam. The cantilever beam drives the arc-shaped rack to swing up and down. When the arc-shaped rack swings up and down, Due to the limitation of the one-way bearing of shaft one, the ratchet rotates counterclockwise in one direction, and the ratchet drives the gear fixed with it to rotate coaxially. Gear one drives the spur gear of gear two meshed with it to rotate, and the bevel gear of gear two It rotates coaxially with the spur gear of gear 2, and drives the bevel gear 3 that meshes with it to rotate. Gear 3 is fixed on the shaft of the DC permanent magnet generator. When the gear 3 rotates, it drives the rotor of the DC permanent magnet generator to rotate. Due to electromagnetic induction, The stator winding of the DC permanent magnet generator outputs unstable direct current, and the output end of the stator winding is connected to the power processing circuit with a USB port, after being filtered by the capacitor, it charges the super capacitor energy storage circuit, and the super capacitor energy storage circuit is connected to DC-DC The power module outputs 5V regulated DC power through the USB port after further voltage stabilization processing.

The vehicle vibrates obviously during driving and has abundant vibration mechanical energy resources. The vehicle vibration power generation device can convert the unstable vehicle vibration mechanical energy into stable output electric energy. Vehicle-mounted electronic devices are increasing day by day, and most of them need to convert the vehicle-mounted 12V DC power supply to 5V DC power supply. The vehicle vibration power generation device can directly output stable 5V DC power through the USB port, and can be placed near electronic equipment or directly embedded in electronic equipment to provide power for it, reducing the power supply load of the vehicle and avoiding external power lines from affecting the appearance of the vehicle interior.

The power generation device adopts a DC permanent magnet generator for long-term stable operation. The cantilever beam and the ratchet vibration pickup mechanism have high mechanical energy transmission efficiency. The nylon gears used have self-lubricating characteristics. The overall system has high reliability. The USB interface is powered, has strong versatility, can be directly placed near or inside the vehicle electronic equipment, and is easy to use.

Matters not covered in the present invention are known technologies.

Claims (2)

1. a vehicle vibration power generation device, it is characterized by this device is housing structure, and profile is cube; In casing, top and bottom are fixed with 1 magnetic respectively; DC permanent magnetic generator, axle one, axle two are all fixed by screws on the inwall of the same base plate of casing, and wherein, the level height of DC permanent magnetic generator, axle one, axle two is identical or close; Gear three is fixed on the axle of DC permanent magnetic generator by interference fit, gear two is fixed on the bearing of axle two by interference fit, and gear one and ratchet are fixed on by interference fit on the unilateral bearing of axle one, wherein, gear one riveted joint is fixed on ratchet, coaxial rotation; Meanwhile, gear three and gear two are interlocked, and gear two and gear one are interlocked; Arc-shaped rack and load are fixed on the movable end of overhang, and the fixed end of overhang is fixed on casing left sideboard inwall; The fixed end of overhang and axle one are in same level, and overhang is identical with the distance of ratchet distance box bottom; Electric energy processing circuit with USB interface is fixed on box wall, is connected with the staor winding of DC permanent magnetic generator by wire;

Described overhang is rectangular tab, and the fixed end of overhang is fixed on the inwall of casing left sideboard, and load and arc-shaped rack are fixed by screws in the movable end of overhang; Arc-shaped rack and ratchet have identical modulus and pressure angle;

Described gear two is compound gear, and composition comprises: the spur gear of gear two, the umbrella gear of gear two and gear two mesopore, and the spur gear of gear two is below the umbrella gear of gear two, and gear two forms for cast inblock; Gear three is umbrella gear, together with the bevel gearing of gear two, the standard pitch diameter of gear three is less than the standard pitch diameter of the umbrella gear of gear two, and spur gear and the spur gear gear one of gear two are interlocked, and the spur gear standard pitch diameter of gear two is less than the standard pitch diameter of gear one.

2. vehicle vibration power generation device as claimed in claim 1, the composition that it is characterized by the electric energy processing circuit of described band USB interface comprises capacitor filter, super capacitor energy-storage circuit, DC-DC power module, USB interface, its annexation is capacitor filter, super capacitor energy-storage circuit, DC-DC power module, USB interface successively cascade form, capacitor filter two ends are the input end of the electric energy processing circuit of band USB interface, and be connected with staor winding, USB interface externally exports electric energy.