A high-efficiency solar wheel assembly for bicycle

Abstract

The present invention relates to a high-efficiency solar wheel assembly for bicycles, which is a layered composite structure, including a high-strength circuit substrate, a radiation-resistant composite adhesive layer, a solar cell layer, a radiation-resistant composite adhesive layer and a scratch-resistant and wear-resistant surface film arranged in sequence from bottom to top. The solar cell layer is composed of distributed solar cells, and the circuit part of the solar cell adopts a low-resistance busbar soldering method to connect the circuit, and converges to the high-strength circuit substrate and leads out. The present invention adopts a novel design concept and uses a distributed battery cell arrangement to reduce the impact of the illumination angle and shadow shielding on the voltage of the wheel assembly. It also adopts a high-reliability circuit design method to design the circuit for the high-strength circuit substrate, reduce circuit line loss and have good thermal conductivity, which can reduce the impact of heat accumulated on the surface of the assembly during solar power generation on the internal components of the wheel. This invention can better solve the problems encountered in the application of solar energy on bicycles.

Description

Technical Field

[0001] The invention relates to a solar energy wheel assembly, in particular to a high-efficiency solar energy wheel assembly for a bicycle. Background Art

[0002] At present, the automobile industry is developing rapidly and has been popularized in thousands of households. At present, the number of cars in first-tier and second-tier cities is increasing rapidly year by year. However, the problems caused are also quickly exposed. The pollution of exhaust gas to the environment, road congestion, urban noise, greenhouse effect, etc. are increasingly destroying the environment of our daily life. Therefore, it is imperative to develop green transportation and green travel. As a model of green travel, bicycles have broad development prospects. However, the disadvantages of traditional bicycles are also obvious, such as large physical consumption and short cruising range. They are not suitable as a medium and long-distance means of transportation, and are not suitable for people of all ages. Therefore, the innovation and development of bicycles is the main means for the bicycle industry to regain new vitality.

[0003] The speed of solar bicycles is calibrated at 22 kilometers per hour. Based on the diameter of the bicycle wheel of 26 inches, the motor speed is 170 revolutions per minute. Since low-speed DC motors are heavy, they are difficult to install on bicycles. In the 1980s, my country's electric bicycles used high-speed motors to reduce speed. The 24-volt DC motor produced has a speed of 3,500 revolutions per minute, and a mechanical reduction device is used to reduce the speed. It still feels heavy when installed on a bicycle. Recently, the development of advanced power technology and people's attention to energy, safety and environmental protection have aroused people's interest in the development of low-speed DC motors. my country has successively developed an electric wheel hub that integrates "motor, reducer, and clutch". It weighs only 3.2 kilograms. The power is 120 watts, 140 watts, 180 watts and 190 watts respectively. Various hub motors with voltages of 24 volts and 36 volts. There are small holes on the outer edge of the hub, which can be connected to the rim with spokes. The hub motor is 80 mm wide and can directly replace the front or rear axle of the bicycle.

[0004] Although the motor drive problem has been solved, energy replenishment has become a new problem. Traditional solar panels are bulky and cannot be installed directly on bicycles. Making the panels into thin wheels has the risk of bending and breaking easily, which will cause fatal damage to the panels. The most important point is that traditional bicycle panels cannot face the sun and are often blocked, causing the voltage and power of the solar panels to drop sharply and unable to supply power to the motor.

[0005] Chinese patent CN206634116U discloses a solar bicycle wheel device. The solar bicycle wheel device includes a wheel rim, a bearing, a wheel disc, a solar panel, a light block, an energy storage unit, a charge and discharge control unit, and a control unit. Light guide plates that fit the light block and baffles that fit the light guide plates to cover the solar panel are also provided on both sides of the wheel disc. It can effectively use solar energy to power some electrical appliances such as wheel lights and lighting lamps, so that users do not need to replace batteries for these electrical appliances, which is convenient for users to use and saves costs.

[0006] Chinese patent CN206633722U discloses a solar wheel device. It solves the problem that existing bicycles have no device for utilizing solar energy, and that general solar wheels have unreasonable structures, are easily damaged, and have low solar energy utilization rates. It includes an integrated wheel rim, wheel spokes, bearings, double-sided solar panels, light bars, energy storage units, charging and discharging control units, and control units. The solar panel is plugged between adjacent wheel spokes, and the light bar is installed between the solar panel and the wheel rim. Baffles are also installed on both sides of the solar panel and the light bar.

[0007] Both of the above patents are to set solar cell components on the basis of the original bicycle wheel structure, which effectively utilizes a small space and may be blocked. In addition, the above two patent technologies cannot realize the solar panels to supply power for the bicycle's driving force, and can only provide a small amount of power supply for facilities such as lighting. Summary of the invention

[0008] The purpose of the present invention is to provide a high-efficiency solar wheel assembly for a bicycle in order to overcome the defects of the above-mentioned prior art.

[0009] The purpose of the present invention can be achieved by the following technical solutions:

[0010] A high-efficiency solar wheel assembly for a bicycle is a layered composite structure, comprising a high-strength circuit substrate, a radiation-resistant composite adhesive layer, a solar cell layer, a radiation-resistant composite adhesive layer and a scratch-resistant and wear-resistant surface film arranged in sequence from bottom to top.

[0011] The solar cell layer is composed of distributed solar cells. The circuit part of the solar cell is connected by low-resistance busbar soldering and is connected to a high-strength circuit substrate and led out.

[0012] The high-efficiency solar wheel assembly for bicycles is circular in shape as a whole, and the distributed solar cells form a plurality of battery sub-arrays with independent electrical performance outputs, each battery sub-array having independent voltage and current, and the plurality of battery sub-arrays are evenly distributed in the four quadrants of the entire assembly to ensure that the voltage of the entire assembly is substantially unaffected by the blocking or damage of any one or several battery sub-arrays, thereby ensuring that the energy storage battery is continuously charged.

[0013] The center of the circle of the high-efficiency solar wheel assembly for the bicycle is the origin of the quadrant division.

[0014] The advantage of using multiple sub-arrays to converge and centrally perform anti-reverse charging processing and output is that it saves line space, makes the line more concise, reduces weight, and increases reliability. The anti-reverse charging processing of each battery sub-array protects the safety of the battery sub-array and avoids the hidden danger of local hot spots burning components.

[0015] The high-strength circuit substrate is integrated with a low-resistance ultra-thin wide bus strip, the front side of which is connected to the positive and negative electrodes of each battery sub-array, and the back side of which is connected to the circuit pad on the back side of the high-strength circuit substrate, thereby realizing the current extraction of each battery sub-array.

[0016] The low-resistance ultra-thin wide busbar adopts a wraparound structure, and the low-resistance ultra-thin wide busbar comprises a negative busbar and a positive busbar, and both the negative busbar and the positive busbar are made of copper strips.

[0017] The circuit convergence of the battery sub-arrays in the four quadrants is achieved through a wraparound convergence strip and is led out from the circuit pads on the back of the substrate. The wraparound convergence structure can offset the magnetic field and static electricity generated by each sub-array during the convergence process, thereby improving safety. To prevent reverse charging of the circuits of each battery sub-array during the convergence process, a chip diode is mounted on the positive lead-out end of the battery sub-array and is subsequently hidden to improve the overall aesthetics of the component.

[0018] The high-strength circuit substrate adopts a high-reliability circuit design method, specifically, the substrate adopts a large-area circuit substrate with good thermal insulation and good mechanical strength, the outer surface of the substrate adopts an anti-UV coating to avoid aging; the bus circuit is integrated inside the substrate to ensure the safety of the circuit part and prevent the hidden dangers of short circuit and open circuit.

[0019] The material used for the high-strength circuit substrate includes a large-area FR-4 epoxy fiberglass cloth substrate.

[0020] The radiation-resistant composite adhesive is a transparent hot-melt adhesive or a pressure-sensitive adhesive, and can be selected from EVA adhesive.

[0021] The scratch-resistant and wear-resistant surface film is a wear-resistant, frosted, light-recessed PET film or ETFE film.

[0022] The high-efficiency solar wheel assembly for a bicycle is circular in shape as a whole, with a middle through hole for mounting on an axle and a mounting hole for achieving fixed mounting.

[0023] The outer ring of the high-efficiency solar wheel assembly for a bicycle is directly used for mounting a tire.

[0024] The solar wheel assembly of the present invention is manufactured by adopting a composite molding method of lamination packaging.

[0025] The present invention adopts a novel design concept and uses a distributed battery arrangement to reduce the impact of illumination angle and shadow shielding on the voltage of the wheel assembly. It also adopts a high-reliability circuit design method to design the circuit for a high-strength circuit substrate, which reduces circuit line loss and has good thermal conductivity, and can reduce the impact of heat accumulated on the surface of the assembly during solar power generation on the internal components of the wheel. This invention can better solve the problems encountered in the application of solar energy on bicycles and better help the innovation and development of the bicycle industry.

[0026] Traditional solar panels are heavy and cannot be directly installed on bicycles. If the panels are made into thin wheel styles, they are easy to bend and break, which will cause fatal damage to the panels. The most important point is that traditional bicycle panels cannot face the sun and are often blocked, which causes the voltage and power of the solar panels to drop sharply and cannot supply power to the motor. The present invention improves and optimizes the above problems. The relevant technical indicators of the present invention are: (1) the partial blockage is less than 1 / 4, and the voltage drop rate of the panel is less than 3%; (2) the power loss is less than 3% in the ISO2248-1985 90cm drop test.

[0027] Compared with the prior art, the present invention, through the new design of the solar wheel assembly, can not only automatically change the speed of the bicycle, but also realize self-electric drive, providing an energy basis for the innovative development of bicycles in my country and green and environmentally friendly travel. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the main structure of a high-efficiency solar wheel assembly for a bicycle;

[0029] Figure 2 It is a schematic diagram of the cross-sectional structure of the AA surface of a high-efficiency solar wheel assembly for a bicycle;

[0030] Figure 3 Schematic diagram of battery sub-array distribution. DETAILED DESCRIPTION

[0031] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example

[0033] refer to Figure 1 A high-efficiency solar wheel assembly for a bicycle is a layered composite structure. The high-efficiency solar wheel assembly for a bicycle is circular in shape, with a middle through hole 11 for mounting on an axle and a mounting hole 12 for fixed mounting. The outer ring of the high-efficiency solar wheel assembly for a bicycle is directly used for mounting a tire.

[0034] The solar wheel assembly of the present invention is manufactured by a composite molding method of lamination packaging. Figure 2 The high-efficiency solar wheel assembly for bicycles is a layered composite structure, including a high-strength circuit substrate 1, a radiation-resistant composite adhesive layer 2, a solar cell layer 3, a radiation-resistant composite adhesive layer 2 and a scratch-resistant and wear-resistant surface film 4 arranged in sequence from bottom to top. The solar cell layer is composed of distributed solar cells 5, and the circuit part of the solar cell is connected by low-resistance busbar soldering, and is converged to the high-strength circuit substrate and led out.

[0035] Specifically, a low-resistance ultra-thin wide bus strip is integrated on the high-strength circuit substrate. The front side of the low-resistance ultra-thin wide bus strip is connected to the positive and negative electrodes of each battery sub-array, and the back side of the low-resistance ultra-thin wide bus strip is connected to the circuit pad on the back side of the high-strength circuit substrate, thereby realizing the current extraction of each battery sub-array.

[0036] The low-resistance ultra-thin wide bus strip adopts a wraparound structure. The low-resistance ultra-thin wide bus strip comprises a negative bus strip and a positive bus strip. Both the negative bus strip and the positive bus strip are made of copper strips.

[0037] The circuit convergence of the battery sub-arrays in the four quadrants is achieved through a wraparound convergence strip and is led out from the circuit pads on the back of the substrate. The wraparound convergence structure can offset the magnetic field and static electricity generated by each sub-array during the convergence process, thereby improving safety. To prevent reverse charging of the circuits of each battery sub-array during the convergence process, a chip diode is mounted on the positive lead-out end of the battery sub-array and is subsequently hidden to improve the overall aesthetics of the component.

[0038] The high-strength circuit substrate adopts a high-reliability circuit design method. Specifically, the substrate adopts a large-area circuit substrate with good thermal insulation and good mechanical strength. The outer surface of the substrate adopts an anti-UV coating to avoid aging; the busbar circuit is integrated inside the substrate to ensure the safety of the circuit part and prevent the hidden dangers of short circuit and open circuit.

[0039] refer to Figure 3The high-efficiency solar wheel assembly for bicycle is circular in shape as a whole, and the distributed solar cells form several battery sub-arrays 6 with independent electrical performance outputs, each battery sub-array 6 has independent voltage and current, and several battery sub-arrays are evenly distributed in the four quadrants of the whole assembly to ensure that any one or several battery sub-arrays are blocked or damaged and have little effect on the voltage of the entire assembly, ensuring continuous charging of the energy storage battery. Each battery sub-array 6 is connected to a negative copper strip 7 and a positive copper strip 8 at the same time, and the width of the negative copper strip and the positive copper strip is 12 mm and the thickness is 0.1 mm.

[0040] The advantage of using multiple sub-arrays to converge and centrally perform anti-reverse charging processing and output is that it saves line space, makes the line more concise, reduces weight, and increases reliability. The anti-reverse charging processing of each battery sub-array protects the safety of the battery sub-array and avoids the hidden danger of local hot spots burning components.

[0041] In this embodiment, the material used for the high-strength circuit substrate includes a large-area FR-4 epoxy glass fiber cloth substrate.

[0042] In this embodiment, the radiation-resistant composite adhesive is a transparent hot melt adhesive or a pressure-sensitive adhesive, which can be selected from EVA adhesive.

[0043] In this embodiment, the scratch-resistant and wear-resistant surface film is a wear-resistant, frosted, light-retaining PET film or ETFE film.

[0044] The present invention adopts a novel design concept and uses a distributed battery arrangement to reduce the impact of illumination angle and shadow shielding on the voltage of the wheel assembly. It also adopts a high-reliability circuit design method to design a circuit for a high-strength circuit substrate, which reduces circuit line loss and has good thermal conductivity, and can reduce the impact of heat accumulated on the surface of the assembly during solar power generation on the internal components of the wheel. This invention can better solve the problems encountered in the application of solar energy on bicycles and better promote the innovation and development of the bicycle industry.

[0045] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A high-efficiency solar wheel assembly for a bicycle, characterized in that: It is a layered composite structure, including a high-strength circuit substrate, a radiation-resistant composite adhesive layer, a solar cell layer, a radiation-resistant composite adhesive layer and a scratch-resistant and wear-resistant surface film arranged in sequence from bottom to top. The high-efficiency solar wheel assembly for bicycle is circular in shape as a whole, with a middle through hole for mounting on the axle and a mounting hole for fixed mounting; the outer ring of the high-efficiency solar wheel assembly for bicycle is directly used for mounting the tire; The solar cell layer is composed of distributed solar cells, and the solar cell circuit part is connected by low-resistance busbar soldering, and is converged to a high-strength circuit substrate and led out; The high-efficiency solar wheel assembly for bicycle is circular in shape as a whole, and the distributed solar cells form a plurality of battery sub-arrays with independent electrical performance outputs, each battery sub-array has independent voltage and current, and the plurality of battery sub-arrays are evenly distributed in the four quadrants of the entire assembly; The center of the high-efficiency solar wheel assembly for bicycle is the origin of quadrant division; The high-strength circuit substrate is integrated with a low-resistance ultra-thin wide bus strip, the front side of the low-resistance ultra-thin wide bus strip is connected to the positive and negative electrodes of each battery sub-array, and the back side of the low-resistance ultra-thin wide bus strip is connected to the circuit pad on the back side of the high-strength circuit substrate, so as to realize the extraction of current from each battery sub-array; The low-resistance ultra-thin wide bus belt adopts a wraparound structure, and the low-resistance ultra-thin wide bus belt includes a negative bus belt and a positive bus belt, and the negative bus belt and the positive bus belt are both made of copper belt; The circuit convergence of the battery sub-arrays in the four quadrants is achieved through a wraparound convergence strip and is led out from the circuit pads on the back of the substrate. The wraparound convergence structure offsets the magnetic field and static electricity generated by each sub-array during the convergence process, thereby improving safety. In order to prevent reverse charging of the circuits of each battery sub-array during the convergence process, a chip diode is mounted on the positive lead-out end of the battery sub-array.

2. A high-efficiency solar wheel assembly for a bicycle according to claim 1, characterized in that: The material used for the high-strength circuit substrate includes a large-area FR-4 epoxy fiberglass cloth substrate.

3. The high-efficiency solar wheel assembly for a bicycle according to claim 1, characterized in that: The radiation-resistant composite adhesive is a transparent hot-melt adhesive or a pressure-sensitive adhesive.

4. The high-efficiency solar wheel assembly for a bicycle according to claim 1, characterized in that: The scratch-resistant and wear-resistant surface film is a wear-resistant, frosted, light-recessed PET film or ETFE film.

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