JP7374279B1 - battery charging device - Google Patents

Abstract

An object of the present invention is to provide a battery charging device that can reduce the degree of damage even when subjected to the load of a vehicle, has durability, and has high power generation efficiency. [Solution] An air compressor 2 that generates compressed air by contracting under the load of a vehicle, a pressure tank 4 that stores compressed air from the air compressor, and power generation by receiving compressed air from the pressure tank. The air compressor has an air chamber 2f formed inside and a bellows body 2c formed on the side wall, so that the bellows body is configured to operate when subjected to the load of the vehicle. A bellows container 2b whose bellows body expands and returns to its original state when the vehicle load is released after contracting, and a compressed air outlet which opens when the bellows body contracts and sends compressed air from the air chamber toward the pressure tank. It is provided with a valve 2h and an air introduction valve 2g that opens when the bellows body returns to its extended state and introduces air toward the air chamber. [Selection diagram] Figure 1

Description

The present invention relates to a battery charging device that generates compressed air using the load of a vehicle, generates electricity using the compressed air, and charges a battery.

A technology that uses the weight of vehicles passing on motorways to compress cylinders and pistons to generate compressed air, and uses this compressed air to generate electricity and charge batteries. It is shown in Patent Documents 1 and 2.

FIG. 6 shows a power generation system using the load of a vehicle disclosed in Patent Document 1, in which a movable plate 21 whose one end is rotatably supported is mounted on the road. The free end on the other end side is installed in a state where it is diagonally lifted from the road by a spring 22.
When the vehicle 23 advances from one end of the movable plate 21, the movable plate 21 falls horizontally due to the load of the vehicle 23, and the pressure received at this time contracts the cylinder/piston 24 to generate compressed air. The battery 28 is charged by using the power to generate electricity.

In addition, the reference numeral 25 shown in FIG. 6 is an air storage tank that receives compressed air from the cylinder/piston 24, the reference numeral 26 is an air motor that is rotationally driven by the air pressure from the air storage tank 25, and the reference numeral 27 is an air storage tank that receives compressed air from the cylinder/piston 24. A generator receiving rotational driving force, numeral 28, indicates a battery that is charged by receiving electric power from the generator 27.

On the other hand, FIG. 7 shows a part of a power generation system using the load of a vehicle disclosed in Patent Document 2, in which a pressure receiving plate 32 is placed on a road surface 31 with a spring 33 protruding therefrom.
As the vehicle 34 travels, the load of the vehicle 34 is applied to the pressure receiving plate 32, so that a cylinder/piston 35 buried underground and linked to the pressure receiving plate 32 contracts, thereby generating compressed air. This compressed air is sent to the air motor via the check valve 36, and drives the generator similarly to the example shown in Patent Document 1. Charging the battery with power from a generator is also disclosed.

Furthermore, FIG. 8 shows a part of the power generation system using the load of a vehicle disclosed in Patent Document 3. In this case, elastically deformable piping, ie, a hose 43, is arranged along the traveling direction of the vehicle 42 on the road surface 41. Then, the hose 43 is crushed by the tires 42a of the vehicle 42 running along the longitudinal direction of the hose 43. As a result, the water in the hose 43 is swept away in the direction of travel of the vehicle 42. The energy of the flow of water in the hose 43 turns a water wheel, which drives a generator, thereby generating electricity.

Japanese Patent Application Publication No. 2004-324628 Japanese Patent Application Publication No. 2014-515078 Japanese Patent Application Publication No. 2014-137045

By the way, according to the power generation system disclosed in Patent Document 1, the vehicle 23 needs to enter from one end side of the movable plate 21 which is rotatably supported, and the vehicle 23 must enter from the other end side of the movable plate 21. When entering from the road, the free end side of the movable plate 21 floating from the road may come into contact with the vehicle 23, causing damage to the vehicle 23 and the movable plate 21 of the power generation system.
In addition, in the power generation system disclosed in Patent Document 2, the pressure receiving plate 32 that receives the load from the tires is connected to the cylinder/piston 35 via a vertical shaft or the like, so that when rotational force is applied to the tires, In this case, stress in the bending direction is applied to the shaft rod via the pressure receiving plate 32. For this reason, this power generation system can be said to have poor structural durability.

In the power generation system disclosed in Patent Document 3, it is necessary for the vehicle to run along the longitudinal direction of the hose 43 arranged on the road surface 41 so that the tires 42a of the vehicle crush the hose 43. If the running trajectory of the tires deviates midway, there is a problem in that satisfactory power generation efficiency cannot be obtained.

This invention attempts to solve the problems of conventional power generation systems shown in Patent Documents 1 to 3 mentioned above, and can reduce the degree of damage caused by vehicle loads and improve durability. The purpose of this invention is to provide a battery charging device with high power generation efficiency.

The battery charging device according to the present invention, which has been made to solve the above-mentioned problems, is arranged on a running road of a vehicle and generates compressed air by contracting under the load of the vehicle. A battery charging device comprising an air compressor, a pressure tank that stores compressed air from the air compressor, and a generator that generates electricity by receiving the compressed air from the pressure tank, the air compressor comprising: An air chamber is formed inside and a bellows body is formed on the side wall, the bellows body contracts when receiving the load of the vehicle, and returns to expansion when the load of the vehicle is released. a bellows container; a compressed air outlet valve that opens when the bellows body contracts and sends compressed air from the air chamber toward the pressure tank; and a compressed air outlet valve that opens when the bellows body returns to extension. The bellows container constituting the air compressor is provided with an air introduction valve for introducing air toward the air chamber, and each end of the coil spring is provided with the bellows container that causes the bellows body to move when the load of the vehicle is applied. The coil spring is housed in the direction of expansion and contraction, and the coil spring is characterized in that the coil diameter at the center is smaller than the coil diameter at each end.

The air compressor used in the battery charging device according to the present invention described above includes a bellows container having an air chamber formed inside and a bellows body formed on the side wall, and a compressed air outlet that opens when the bellows body contracts. A bellows pump is provided, which includes a valve and an air introduction valve that opens when the bellows body returns to its extended state.
Therefore, by placing the air compressor with a bellows pump on the road of the vehicle, a load can be applied to the top of the bellows container by the tires of the vehicle. By driving the generator using the compressed air thus obtained, a predetermined amount of generated power can be obtained regardless of the direction in which the vehicle is traveling. Furthermore, since the bellows container can be made of a flexible material such as rubber, it can be relatively flexibly deformed in the vertical and horizontal directions even when subjected to the rotational stress of a vehicle tire, causing damage. Although the degree is low, it can contribute to providing a battery charging device with excellent durability.

According to the above -mentioned air compressor having a coil spring in the bellows container according to claim 1 , the bellows container is subjected to a contraction action due to the load of continuously passing vehicle tires, and is also contracted by the action of the coil spring. The bellows container in this state quickly returns to expansion. Therefore, it is possible to provide an air compressor with improved compressed air generation efficiency.
In addition, by using a coil spring in which the coil diameter at the center is smaller than the coil diameter at each end, the top of the bellows container in contact with the tire can swing relatively flexibly as the vehicle travels. You will receive the load while doing so. This makes it possible to obtain an air compressor that is less likely to be damaged by the load of the vehicle.

Further, in the battery charging device according to the present invention , a return valve is arranged to return compressed air from the pressure tank toward the air chamber of the bellows container constituting the air compressor, and the return valve returns compressed air to the air chamber through the return valve. It is also possible to employ a configuration in which the compressed air returned to the compressed air causes the bellows body in the contracted state to accelerate its return to extension.

Also in the invention described in paragraph [0015] , the air compressor using the bellows pump can generate compressed air in response to the load from continuously passing tires, improving the efficiency of compressed air generation. You can contribute to making this happen.

Further, as described in claim 2 , the air compressor in the battery charging device according to the present invention is housed in a flat housing laid on a running road of a vehicle, and has an opening formed on the top surface of the housing. A metal ring is attached along the opening, and the top of the bellows container constituting the air compressor is arranged to protrude from the metal ring , and the base member on which the bellows container is mounted includes: A second metal ring is attached, and the second metal ring is arranged so as to be in contact with the metal ring, and the top surface of the housing is caused by the metal ring and the second metal ring. It is preferable that the bellows container has a structure that functions as a contraction stopper to prevent excessive contraction and deformation of the bellows body in the bellows container by receiving the load of the vehicle.

Furthermore, as described in claim 3 , a plurality of air compressors are housed in the housing, and openings are formed in the top surface of the housing to correspond to respective bellows containers of each air compressor. , a base on which the bellows containers are mounted, the tops of the bellows containers being arranged in each of the metal rings attached to each of the openings formed in the top surface of the housing so as to protrude from each of the metal rings , respectively; It is desirable that the second metal ring is attached to the member to constitute a compressed air generation unit.

According to the configuration described above, the top surface of the housing can receive the load of the vehicle, so that excessive contraction and deformation of the bellows body in the bellows container can be prevented . Therefore, it is possible to prevent excessive loads from the running tires from being applied to the bellows container, and the durability of the air compressor can be improved.
By configuring a compressed air generation unit by including a plurality of air compressors in the housing, the efficiency of compressed air generation can be significantly improved, thereby creating a battery charging device with improved power generation efficiency. It becomes possible to provide

According to the present invention, it is possible to provide a battery charging device that can reduce the degree of damage caused by the load of a vehicle, has durability, and has high power generation efficiency.

1 is a schematic diagram showing the overall configuration of a battery charging device according to the present invention. FIG. 1 is a cross-sectional structural diagram showing a first embodiment of an air compressor. FIG. 2 is a cross-sectional structural diagram of a compressed air generation unit including a plurality of air compressors in a housing. It is a schematic diagram showing the connection configuration of piping etc. after the compressed air generation unit. FIG. 2 is a cross-sectional structural diagram showing a second embodiment of an air compressor. 1 is a schematic diagram showing a first example of a conventional power generation system that utilizes the load of a vehicle. It is a schematic diagram showing a second example of a conventional power generation system. It is a schematic diagram showing a third example of a conventional power generation system as well.

As described at the beginning, the battery charging device according to the present invention uses the load of an automobile to generate compressed air, drives an air motor with the compressed air to generate electricity, and charges a battery. Its basic configuration is shown in the schematic diagram shown in FIG.
In FIG. 1, reference numeral 1 indicates an air intake duct, and air taken in this air intake duct 1 is sent to a compressed air generation unit 3 equipped with a plurality of air compressors 2.

The configuration of this compressed air generation unit 3 will be explained later, but it is placed on the road on which a vehicle travels, and uses the load of the vehicle to obtain compressed air from each air compressor 2. is sent to the pressure tank 4 and accumulated.
Compressed air from the pressure tank 4 is supplied to a generator 5 comprising an air motor.
An air motor driven by compressed air drives a generator 5 directly connected to the air motor, and a battery 6 receiving electric power from the generator 5 is charged.

Note that the reference numeral 8a shown in FIG. This is an air outlet pipe. Moreover, the code|symbol 8c is a compressed air supply pipe which sends compressed air from the pressure tank 4 to the generator 5 equipped with an air motor, and the code|symbol 8d is an air discharge pipe in the said air motor.
Further, reference numeral 9a indicates a power supply line that supplies power generated from the generator 5 to the battery 6, and reference numeral 9b indicates an external connection line that supplies power from the battery 6 to external devices.

FIG. 2 shows a first embodiment of the air compressor 2 provided in the compressed air generation unit 3 in a partially sectional view.
This air compressor 2 is equipped with a box-shaped base member 2a, and a bellows container 2b is mounted on this base member 2a. This bellows container 2b has a bellows body 2c formed on a cylindrical side wall, and one end of the bellows container 2b is closed, with the closed portion facing upward, and this constitutes the top 2d of the bellows container 2b. There is. The opening 2e side of the bellows container 2b facing the top 2d is attached to the base member 2a in an upright position. The inside of the bellows container 2b constitutes a hollow air chamber 2f.

An air inlet valve 2g and a compressed air outlet valve 2h are arranged in the base member 2a, facing the opening 2e of the bellows container 2b. That is, the compressed air outlet valve 2h opens when the bellows body 2c of the bellows container 2b contracts in the vertical direction under the load of the vehicle, and directs compressed air from the air chamber 2f toward the pressure tank 4. The air introduction valve 2g opens when the bellows body 2c returns to extension after the load on the vehicle is released, and serves to introduce air toward the air chamber 2f.

A compressed air introduction hole 2i is formed in the base member 2a for returning a portion of compressed air from the pressure tank 4 to the air chamber 2f of the bellows container 2b via a return valve 7, which will be described later. This allows the bellows body 2c, which has been brought into a contracted state under the load of the vehicle, to return to its extended state more quickly.

Note that an air branch introduction pipe 3f, a compressed air collective outlet pipe 3g, and a return air distribution pipe 3h are connected to the base member 2a, which are piped into the compressed air generation unit 3, which will be described later.
The air branch introduction pipe 3f is connected to the above-described air introduction valve 2g, and the compressed air collective outlet pipe 3g is connected to the above-described compressed air outlet valve 2h. Further, the return air distribution pipe 3h is connected to the compressed air introduction hole 2i.

Further, an upright wall 2j is formed on the upper peripheral edge of the base member 2a so as to surround the lower bottom of the bellows container 2b, and a metal ring 2k is arranged along the upper end of the upright wall 2j. Further, a metal ring 3e is arranged to surround the vicinity of the top 2d of the bellows container 2b, and this metal ring 3e is connected to an opening formed in the top surface 3b of a housing 3a which will be described later and constitutes the compressed air generation unit 3. It is attached along 3c.

FIG. 3 shows the compressed air generation unit 3 in a sectional view. This compressed air generation unit 3 is equipped with a flat housing 3a that is installed on a vehicle travel road. A slope 3d having an appropriate slope is formed at both left and right ends of the housing 3a along the vehicle traveling direction, and the slope 3d can be appropriately selected. Moreover, this housing 3a can also be used in a semi-embedded state in the running path.

The housing 3a is preferably made of a hard rubber material, and the top 2d of the bellows container 2b constituting the air compressor 2 protrudes into a plurality of openings 3c formed in the top surface 3b of the housing 3a. It is located in When the top surface 3b of the housing 3a receives the load of the vehicle, it functions as a contraction stopper to prevent excessive contraction and deformation of the bellows body 2c in the bellows container 2b. In addition, in FIG. 3, the description of the metal ring 3e attached to the top opening 3c of the housing 3a shown in FIG. 2 is omitted.

In this case, if an excessive vertical load is to be applied, the metal ring 3e attached to the opening 3c of the housing 3a shown in FIG. 2k, and is configured to act as a stopper to prevent excessive load from being applied to the bellows container 2b. Thereby, serious damage to the air compressor 2 can be prevented.

Inside the housing 3a, there is an air branch introduction pipe 3f that supplies air from the air intake duct 1 brought in via the air introduction pipe 8a to each air compressor 2, and an air introduction valve 2g of each air compressor 2. A collective outlet pipe 3g is also arranged to guide the compressed air from the compressed air outlet valve 2h of each air compressor 2 toward the compressed air outlet pipe 8b.
Furthermore, a return air distribution pipe 3h for introducing compressed air into the compressed air introduction hole 2i of each air compressor 2 is arranged in the housing 3a, and this distribution pipe 3h is connected to a return valve 7 and a pressure tank described later. 4, and is connected to a compressed air return pipe 8e.

FIG. 4 is a schematic diagram showing the connection configuration of piping and the like after the compressed air generation unit 3. Compressed air from the compressed air generation unit 3 is supplied to the pressure tank 4 via the compressed air outlet pipe 8b. The pressure tank 4 is provided with a safety valve 4a and a pressure gauge 4b, and a drain opening 4c for draining water is formed at the bottom of the pressure tank 4.

Furthermore, compressed air is returned from the pressure tank 4 to each air compressor 2 of the compressed air generation unit 3 via the compressed air return pipe 8e. A return valve 7 is disposed in the compressed air return pipe 8e, and the return valve 7 is configured to be able to control the amount of pressurized air returned to the bellows container 2b of the air compressor 2.
The arrangement of the generator 5 with an air motor after the pressure tank 4 shown in FIG. 4 and the battery 6 that is charged by receiving the generated power of the generator 5 is the same as that described based on FIG. 1. is the same as , and its explanation will be omitted.

FIG. 5 shows a second embodiment of the air compressor 2 provided in the compressed air generation unit 3. In the air compressor 2 shown in FIG. 5, parts that perform the same functions as those in the first embodiment of the air compressor 2 shown in FIG. 2 are designated by the same reference numerals. Therefore, individual explanations will be omitted.
In the second embodiment of the air compressor 2, a coil spring 11 is housed in a bellows container 2b, and the upper and lower ends of the coil spring 11 are arranged in a bellows body 2c when receiving a vehicle load. It is accommodated in the direction of expansion and contraction.

The lower end of the coil spring 11 is attached to the center of the base member 2a by a spring locking bolt 12, and the upper end of the coil spring 11 is attached to a circle provided in the vicinity of the top 2d of the bellows container 2b. It is in contact with an annular spring receiver 13.
With this configuration, the bellows container 2b, which is vertically contracted under the load of the vehicle, receives the elastic force of the coil spring 11 at the same time as the load of the vehicle is released, and causes the bellows body 2c to immediately return to expansion. be able to.
Further, the coil spring 11 is formed so that the coil diameters of the upper and lower spring ends 11a, 11b are approximately equal, whereas the coil diameter of the spring center part 11c is the same as the coil diameter of the upper and lower spring ends 11a, 11b. It has been reduced in size.

Therefore, as the vehicle travels, the top portion 2d of the bellows container 2b that comes into contact with the tires receives a load while swinging relatively flexibly. As a result, the degree of excessive friction and pressure contact between the coil spring 11 molded from a relatively hard metal material and the bellows container 2b molded from, for example, a rubber material is reduced, resulting in high durability. An air compressor 2 can be provided.
Moreover, since the coil spring 11 is used in the air compressor 2 of the second embodiment shown in FIG. 5, the pressure tank There is no need to return compressed air from 4 to the air compressor 2. Thereby, the consumption of compressed air can be suppressed and the generation efficiency of compressed air can be improved.

According to the air compressor 2 of the second embodiment shown in FIG. 5, the elastic force of the coil spring 11 housed in the bellows container 2b gives an action of causing the bellows body 2c of the bellows container 2b to return to its extension. Therefore, as shown in FIG. 2, a compressed air introduction hole 2i for returning compressed air to the bellows container 2b and a piping configuration for sending compressed air to this compressed air introduction hole 2i are not necessary.
Therefore, when the air compressor 2 shown in FIG. 5 is employed, the return air distribution pipe 3h shown in FIG. 3, the compressed air return pipe 8e and the return valve 7 shown in FIG. 4 become unnecessary.

The battery 6 in this embodiment functions as a constant voltage circuit, so that a predetermined voltage is maintained from the battery 6 regardless of the number of vehicles passing over the compressed air generation unit 3. This allows you to supply stable power to external devices.

1 Air intake duct 2 Air compressor 2a Base member 2b Bellows container 2c Bellows body 2d Top 2e Opening 2f Air chamber 2g Air introduction valve 2h Compressed air outlet valve 2i Compressed air introduction hole 2j Standing wall 2k Metal ring 3 Compressed air generation unit 3a Housing 3b Top surface 3c Opening 3d Slope 3e Metal ring 3f Air branch introduction pipe 3g Compressed air collective introduction pipe 3h Return air distribution pipe 4 Pressure tank 4a Safety valve 4b Pressure gauge 5 Generator (with air motor)
6 Battery 7 Return valve 8a Air introduction pipe 8b Compressed air outlet pipe 8c Compressed air supply pipe 8d Air discharge pipe 8e Compressed air return pipe 9a Power supply line 9b External connection line 11 Coil spring 11a, 11b Spring end 11c Spring center part 12 Spring Locking bolt 13 Spring receiver

Claims (3)

An air compressor that is placed on the road of the vehicle and generates compressed air by contracting under the load of the vehicle, a pressure tank that stores the compressed air from the air compressor, and compressed air from the pressure tank. A battery charging device comprising a generator that receives electricity and generates electricity,
The air compressor includes:
An air chamber is formed inside and a bellows body is formed on the side wall, the bellows body contracts when receiving the load of the vehicle, and returns to expansion when the load of the vehicle is released. a bellows container;
a compressed air outlet valve that opens when the bellows body contracts and sends compressed air from the air chamber toward the pressure tank;
an air introduction valve that opens when the bellows body returns to extension to introduce air toward the air chamber ;
Each end of a coil spring is housed in the bellows container constituting the air compressor, facing in the direction of expansion and contraction of the bellows body when receiving a load from a vehicle;
The battery charging device is characterized in that the coil spring has a coil diameter smaller at a central portion than a coil diameter at each end . The air compressor is housed in a flat housing placed on the road of the vehicle, and a metal ring is attached to an opening formed in the top surface of the housing along the opening. The top of the bellows container constituting the bellows container is disposed so as to protrude from the metal ring , and a second metal ring is attached to the base member on which the bellows container is mounted, and a second metal ring is attached to the base member on which the bellows container is mounted. a second metal ring is arranged so as to be abuttable;
When the top surface of the housing receives the load of the vehicle , the metal ring and the second metal ring function as a shrinkage stopper to prevent excessive shrinkage and deformation of the bellows body in the bellows container. The battery charging device according to claim 1 . A plurality of air compressors are housed in the housing, and openings are formed in the top surface of the housing to correspond to respective bellows containers of each air compressor ,
A base member on which the bellows containers are mounted, the top of each of the bellows containers being disposed in each of the metal rings attached to each of the openings formed on the top surface of the housing with the tops protruding from each of the metal rings, respectively , and the bellows containers being mounted. 3. The battery charging device according to claim 2 , wherein the second metal ring is attached to constitute a compressed air generation unit.

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