Electromagnetic energy collecting device and automobile

Abstract

The invention relates to an electromagnetic energy collecting device and an automobile. The electromagnetic energy collecting device comprises an induction body, a magnetic part and at least one coil winding. The induction body is configured to be of an annular structure formed by connecting pipelines with cavities in an end-to-end mode, and the cavities in the pipelines are communicated in an end-to-end mode to form an annular induction cavity. The coil windings are wound on the induction body at intervals. The magnetic piece is movably connected in the induction cavity in a matched mode and can roll relative to the induction body. The head end and the tail end of the pipeline are constructed to be complementary diagonal planes, and the head end and the tail end of the pipeline are connected to form an inclined oval joint. And each frame of the magnetic piece rolling in the preset arc distance L of the elliptical seam has at most two contact points with the elliptical seam. Therefore, the resistance of the elliptical seam to the magnetic part is greatly reduced, the influence on the rolling speed of the magnetic part is also greatly weakened, and the energy capture efficiency and the effective generating capacity of the electromagnetic energy collection device can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnetic energy harvesting devices, in particular to an electromagnetic energy harvesting device and a car. BACKGROUND

[0002] In recent years, with the rapid development of the Internet of Things and intelligent devices, how to provide continuous and stable energy for distributed sensors and micro devices has become a research hotspot. The traditional battery power supply method has the problems of frequent replacement and high maintenance cost. In order to solve the power supply problem, people began to think about how to collect energy from the surrounding environment to realize "self-power supply". This self-power supply system has many advantages such as sustainability, low cost, and environmental protection.

[0003] The electromagnetic energy harvesting device is a device that converts mechanical energy (such as vibration, rotation, impact, etc.) in the environment into electrical energy through electromagnetic induction principle. It is usually composed of a magnetic part and a coil. When the magnetic part moves relative to the coil, the changing magnetic field will induce an electromotive force in the coil, thereby generating an electric current. At present, the existing electromagnetic energy harvesting devices on the market mostly generate electricity through the rolling of the magnetic part in the annular track, and the annular track usually has a circular joint extending around the annular track. When the magnetic part rolls in the annular track, the magnetic part will synchronously contact all the circular joints, and the circular joints will generate a large resistance to the rolling of the magnetic part, reducing the rolling speed of the magnetic part, and thus limiting the energy capture efficiency and reducing the effective power generation. SUMMARY

[0004] Therefore, it is necessary to provide an electromagnetic energy harvesting device and a car to solve the above problems.

[0005] An electromagnetic energy harvesting device, comprising:

[0006] An induction body configured as an annular structure formed by connecting the heads and tails of pipes with cavities inside;

[0007] At least one coil winding, each of which is spaced apart and wound on the induction body; and

[0008] A magnetic part movably connected in the induction cavity and capable of rolling relative to the induction body;

[0009] Wherein, the heads and tails of the pipes are configured as complementary bevels, and the heads and tails of the pipes are connected to form an inclined elliptical joint.

[0010] In one embodiment, the number of magnetic parts is multiple, and all the magnetic parts are movably connected in the induction cavity.

[0011] In one of the embodiments, all the magnetic pieces are close to each other and arranged alternately in the N-S pole mode.

[0012] In one of the embodiments, the arc length between the two ends of the two adjacent coil windings close to each other is equal to the arc length between the two ends of the magnetic pieces connected in series in the induction cavity.

[0013] In one of the embodiments, the magnetic piece is a spherical structure.

[0014] In one of the embodiments, the induction body and the magnetic piece have a preset friction coefficient F, and the preset friction coefficient F satisfies the condition: 0≤F≤0.02.

[0015] A car comprising the electromagnetic energy collection device in the foregoing embodiments.

[0016] In one of the embodiments, the car further comprises a frame and a hub, the hub is movably connected to the frame, and the electromagnetic energy collection device is connected to the hub and coaxially arranged with the hub.

[0017] In one of the embodiments, the hub can be controlled to rotate around the central axis of the hub relative to the frame, and drive the electromagnetic energy collection device to rotate coaxially.

[0018] In one of the embodiments, the car further comprises an energy conversion device, and the energy conversion device is electrically connected to each coil winding.

[0019] In one of the embodiments, the car further comprises a sensing module, and the sensing module is electrically connected to the energy conversion device.

[0020] The electromagnetic energy collection device and the car, the electromagnetic energy collection device comprises an induction body, a magnetic piece, and at least one coil winding. The induction body is configured as a ring structure formed by connecting the pipes with cavities in series, and the cavities in the pipes are connected in series and configured to form a ring-shaped induction cavity. Each coil winding is spaced apart and arranged on the induction body. The magnetic piece is movably connected in the induction cavity and can roll relative to the induction body.

[0021] In the actual operation process of the electromagnetic energy collection device, the magnetic piece is located at the bottom of the ring-shaped induction cavity along the direction of gravity under the action of gravity. When the induction body drives the coil to rotate around the central axis under the action of external force, the magnetic piece can roll relative to the induction body and always be located at the bottom of the ring-shaped induction cavity along the direction of gravity under the action of gravity. In this way, the magnetic piece can move relative to the coil winding to cut the magnetic induction lines and convert kinetic energy into electrical energy.

[0022] Further, in the present application, the first end and the second end of the pipe are configured as complementary bevels, and the first end and the second end of the pipe are connected to form an inclined elliptical joint. The elliptical joint is defined to have a preset arc length L in the circumferential direction of the induction body. During the rolling of the magnetic member through the inclined elliptical joint, the magnetic member has at most two contact points with the elliptical joint in each frame of rolling within the preset arc length L of the elliptical joint. In this way, the resistance generated by the elliptical joint on the magnetic member is greatly reduced, and the influence on the rolling speed of the magnetic member is also greatly weakened, which can effectively improve the energy capture efficiency and the effective power generation of the electromagnetic energy harvesting device. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structure of the electromagnetic energy harvesting device in the present application is shown.

[0024] Figure 2 The structure of the electromagnetic energy harvesting device in the present application is shown.

[0025] Figure 3 The structure of the electromagnetic energy harvesting device in the present application is shown.

[0026] Figure 4 The structure of the electromagnetic energy harvesting device in the present application is shown.

[0027] REFERENCE NUMERALS

[0028] The electromagnetic energy harvesting device 100;

[0029] The induction body 10; the annular induction cavity 101; the elliptical joint 102;

[0030] The coil winding 11; the magnetic member 12; the preset arc length L;

[0031] The hub 200. DETAILED DESCRIPTION

[0032] To make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below in conjunction with the drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0033] In the description of the application, it should be understood that, if there are these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0034] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise explicitly specified and limited, if there are terms "installation", "connection", "connection", "fixation" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0036] In this application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "on" or "under" the first feature on the second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] It is to be noted that when an element is referred to as being "on" or "connected to" another element, it can be directly on the other element or intervening elements can also be present. In addition, it is to be noted that when a member is referred to as being "connected", it is not limited to the cases where the member is directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions as used herein are for the purpose of illustration only and do not indicate the only possible orientation of the embodiments.

[0038] In recent years, with the rapid development of Internet of Things and smart devices, how to provide continuous and stable energy for distributed sensors and micro devices has become a research hotspot. The traditional battery power supply method has the problems of frequent replacement and high maintenance cost. In order to solve the power supply problem, people began to think about how to collect energy from the surrounding environment to realize "self-power supply". This self-power supply system has many advantages such as sustainability, low cost, green environmental protection and so on.

[0039] The electromagnetic energy collection device is a device that converts mechanical energy (such as vibration, rotation, impact, etc.) in the environment into electrical energy through electromagnetic induction principle. It is usually composed of a magnetic part and a coil. When the magnetic part moves relative to the coil, the changing magnetic field will induce an electromotive force in the coil, thereby generating an electric current. At present, the existing electromagnetic energy collection devices on the market mostly generate electricity through the rolling of the magnetic part in the annular track, and the annular track usually has a circular joint extending around the annular track. When the magnetic part rolls in the annular track, the magnetic part will synchronously contact all the circular joints, and the circular joints will generate a large resistance to the rolling of the magnetic part, reducing the rolling speed of the magnetic part, and thus limiting the energy capture efficiency and reducing the effective power generation.

[0040] Based on the above considerations, in order to solve the above problems, please see Figures 1 to 3 In one or more embodiments of the present application, an electromagnetic energy collection device 100 is provided. The induction body 10 is formed by connecting the heads and tails of the pipes with cavities inside to form an annular structure. The heads and tails of the pipes are constructed as complementary bevels, so that the two connected bevels of the heads and tails of the pipes are constructed to form an inclined elliptical joint 102. In this way, the contact area between the magnetic part 12 and the inclined elliptical joint 102 can be reduced when the magnetic part 12 rolls through the inclined elliptical joint 102, so as to reduce the resistance of the elliptical joint 102 to the rolling of the magnetic part 12, thereby ensuring the rolling speed of the magnetic part 12 and effectively improving the energy capture efficiency and effective power generation of the electromagnetic energy collection device 100.

[0041] Specifically, please see Figure 1 and Figure 2The electromagnetic energy collection device 100 comprises an induction body 10, a magnetic piece 12 and at least one coil winding 11. The induction body 10 is configured as a ring structure formed by connecting the head and tail of a pipeline with a cavity inside. The cavities inside the pipeline are connected in series and configured to form a ring-shaped induction cavity 101. Each coil winding 11 is spaced apart and wound on the induction body 10. The magnetic piece 12 is movably connected in the induction cavity and can roll relative to the induction body 10.

[0042] It can be understood that the induction body 10 is a ring structure with a central axis hole formed in the middle. The induction body 10 is vertically arranged, that is, the central axis of the induction body 10 is perpendicular to the direction of gravity, and the ring plane where the induction body 10 is located is parallel to the direction of gravity.

[0043] In the actual operation process of the electromagnetic energy collection device 100, the magnetic piece 12 is located at the bottom of the ring-shaped induction cavity 101 along the direction of gravity under the action of gravity. When the induction body 10 drives the coil to rotate around the central axis under the action of external force, the magnetic piece 12 can roll relative to the induction body 10 and always be located at the bottom of the ring-shaped induction cavity 101 along the direction of gravity under the action of gravity. In this way, the magnetic piece 12 can move relative to the coil winding 11 to cut the magnetic induction lines and convert the function into electrical energy.

[0044] Further, in the present application, please refer to Figure 2 and Figure 3 The head and tail of the pipeline are configured as complementary bevels, and the head and tail of the pipeline are connected to form an inclined oval joint 102.

[0045] It can be understood that the oval joint 102 has a preset arc length distance L along the circumferential direction of the induction body 10. During the rolling of the magnetic piece 12 through the inclined oval joint 102, each frame of the magnetic piece 12 rolling in the preset arc length distance L of the oval joint 102 has and at most two contact points with the oval joint 102. In this way, the resistance generated by the oval joint 102 to the magnetic piece 12 is greatly reduced, and the influence on the rolling speed of the magnetic piece 12 is also greatly weakened, which can effectively improve the energy capture efficiency and effective power generation of the electromagnetic energy collection device 100.

[0046] In some embodiments, please refer to Figure 1 and Figure 2 The number of magnetic pieces 12 is multiple, and all the magnetic pieces 12 are movably connected in the induction cavity.

[0047] Further, all the magnetic pieces 12 are close to each other and arranged alternately in the N-S pole mode.

[0048] It can be understood that, in the present application, by alternately arranging the plurality of magnetic pieces 12 in the induction cavity in the N-S pole manner, the polarization direction of the magnetic pieces 12 can be fixed to generate a stable magnetic field. In this way, when the induction body 10 drives the coil to rotate around the central axis of the induction body 10 relative to the magnetic pieces 12 under the action of an external force, the coil winding 11 cuts the magnetic induction lines in the stable magnetic field generated by the plurality of magnetic pieces 12, and a stable sinusoidal voltage can be output.

[0049] That is, compared with the prior art which uses a single magnetic piece 12 to make the polarization direction change constantly during the rolling of the magnet to generate irregular output results and has a low power generation, the present application uses a plurality of magnetic pieces 12 to generate a stable voltage.

[0050] In some embodiments, referring to Figure 1 and Figure 2 , the arc length between the two ends of the two adjacent coil windings 11 close to each other is equal to the arc length of the two ends of the plurality of magnetic pieces 12 connected in the induction cavity.

[0051] For ease of understanding, a plurality of magnetic pieces 12 passing through two adjacent coil windings 11 are taken as an embodiment for writing. Specifically, the two adjacent coil windings 11 are defined as a first coil winding 11 and a second coil winding 11. In the actual operation process of the electromagnetic energy harvesting device 100, when all the magnetic pieces 12 completely pass through the first coil winding 11, i.e., the last magnetic piece 12 in all the magnetic pieces 12 is separated from the first coil winding 11, the first magnetic piece 12 in all the magnetic pieces 12 just enters the range of the second coil winding 11. In this way, the plurality of magnetic pieces 12 can cooperate with the coil winding 11 without interval time, thereby effectively improving the energy capture efficiency and effective power generation of the electromagnetic energy harvesting device 100.

[0052] In the present application, referring to Figure 1 and Figure 2 , the specific structure of the magnetic piece 12 is not limited. In some embodiments, the magnetic piece 12 is a spherical structure. It can be understood that the spherical structure is the geometric shape with the smallest frictional resistance in nature, which is conducive to realizing the sensitive rolling of the magnetic piece 12 in the induction cavity, thereby improving the energy capture efficiency and effective power generation of the electromagnetic energy harvesting device 100.

[0053] In some embodiments, the induction body 10 and the magnetic piece 12 have a preset friction coefficient F.

[0054] In the embodiments of the present application, the preset friction coefficient Fμ can be understood as follows: when the preset friction coefficient Fμ exists between the inductive body 10 and the magnetic member 12, the resistance of the inductive body 10 to the rolling of the magnetic member 12 is small, and the inductive body 10 and the magnetic member 12 will not cause the inductive body 10 to drive the magnetic member 12 to rotate synchronously due to the friction force, thereby ensuring that the relative independent motion state is maintained during the movement, and the energy loss caused by synchronous rotation is avoided. In this way, it is beneficial to improve the energy capture efficiency and effective power generation of the electromagnetic energy harvesting device 100.

[0055] Further, the specific value range of the preset friction coefficient F is not limited. In the present application, the preset friction coefficient F satisfies the condition: 0≤ preset friction coefficient F≤ 0.02.

[0056] It should be noted that the specific value range of the preset friction coefficient F is obtained by experimental test, and the experimental test related parameters, steps, etc. related to the specific value range of the preset friction coefficient F are all conventional techniques for those skilled in the art, which will not be repeated here.

[0057] It should be further noted that the existing electromagnetic energy harvester mostly generates electricity through the mechanical energy generated by human body movement, and uses the method of fixing the movement track and moving the spherical magnet, but due to the limited amplitude of human body movement, the movement range of the magnet in the track is small, and the size of the output voltage is also limited.

[0058] Based on the above consideration, in order to solve the above problems, please refer to Figure 1 and Figure 4 In one or more embodiments of the present application, an automobile (not shown in the figure) is also provided, which comprises the electromagnetic energy harvesting device 100 in the foregoing embodiments, a vehicle frame and a wheel hub 200. The wheel hub 200 is movably connected to the vehicle frame. The electromagnetic energy harvesting device 100 is connected to the wheel hub 200 and coaxially arranged with the wheel hub 200.

[0059] Among them, the wheel hub 200 can be controlled to rotate around its own central axis relative to the vehicle frame, and drive the electromagnetic energy harvesting device 100 to rotate coaxially.

[0060] It can be understood that during the driving of the automobile, the rotation of the wheel hub 200 around its own central axis can drive the electromagnetic energy harvesting device 100 to rotate synchronously, thereby effectively improving the electric energy generated by the electromagnetic energy harvesting device 100.

[0061] Further, please refer to Figure 1 and Figure 4 The automobile further comprises an energy conversion device (not shown in the figure) and a sensing module (not shown in the figure). The energy conversion device is electrically connected with each coil winding 11. The sensing module is electrically connected with the energy conversion device.

[0062] In the present application, the energy conversion device corresponds to a rectifier transformer, and the sensing module includes a pressure sensor and a temperature sensor for detecting the oil tank of the automobile. It can be understood that the energy conversion device can also correspond to other devices with energy conversion function.

[0063] During the driving of the automobile, the rotation of the hub 200 around its central axis can drive the electromagnetic energy collection device 100 to rotate synchronously to generate a large amount of electric energy. The electric energy generated by the electromagnetic energy collection device 100 is transmitted to the energy conversion device, and after the rectification and transformation operation of the energy conversion device, it is input into the sensing module to ensure the normal operation of the sensing module. In this way, the electromagnetic energy collection device 100 can realize the "self-energy supply" effect of part of the devices in the automobile, which is conducive to saving resources.

[0064] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0065] The above-mentioned embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An electromagnetic energy harvesting device, characterized by, The electromagnetic energy collection device comprises: an induction main body configured as a ring structure formed by connecting two ends of a pipe with a cavity inside; at least one coil winding, each of which is arranged on the induction main body at intervals; a magnetic element movably connected to the induction cavity and capable of rolling relative to the induction main body; wherein the two ends of the pipe are configured as complementary bevels, and the two ends of the pipe are connected to form an inclined oval joint. The number of the magnetic elements is plural, and all the magnetic elements are movably connected to the induction cavity. All the magnetic elements are close to each other and arranged alternately in the N-S pole mode.

2. The electromagnetic energy harvesting device of claim 1, wherein, The arc length between the two ends of two adjacent coil windings close to each other is equal to the arc length between the two ends of all the magnetic elements connected in the induction cavity.

3. The electromagnetic energy harvesting device of claim 2, wherein, The magnetic element is a spherical structure.

4. The electromagnetic energy harvesting device of claim 2, wherein, The induction main body and the magnetic element have a preset friction coefficient F, and the preset friction coefficient F satisfies the condition: 0≤F≤0.

02.

5. The electromagnetic energy harvesting device of claim 1, wherein, The electromagnetic energy collection device comprises the electromagnetic energy collection device described in any one of claims 1 to 6.

6. The electromagnetic energy harvesting device of claim 1, wherein, Further comprising a vehicle frame and a hub movably connected to the vehicle frame; the electromagnetic energy collection device is connected to the hub and arranged coaxially with the hub; 7. An automobile characterized by comprising: wherein the hub can be controlled to rotate around its central axis relative to the vehicle frame, and drive the electromagnetic energy collection device to rotate coaxially.

8. The automobile according to claim 7, characterized by Further comprising an energy conversion device electrically connected to each coil winding. Further comprising a sensing module electrically connected to the energy conversion device.

9. The automobile according to claim 8, characterized by ​ 10. The automobile according to claim 9, characterized by ​

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