CN217388255U - Self-generating energy storage equipment - Google Patents

Abstract

The utility model relates to an energy storage power supply technical field especially relates to a from electricity generation energy storage equipment. The utility model provides a self-generating energy storage device, which comprises a cylinder body, a rolling part and a power generation module, wherein the cylinder body is of a tubular structure with two closed ends, an energy storage element and a control element for realizing the charging and discharging control of the energy storage element are arranged in the cylinder body, and a transmission module with the charging and discharging function is arranged on the cylinder body; the rolling part is rotatably sleeved outside the cylinder body and can rotate around the central axis of the cylinder body, so that a wheel-shaped structure is formed by the rolling part and the cylinder body, the friction force between the rolling part and the ground can be reduced, the energy storage equipment can be conveniently moved, the rolling part rolls relative to the ground, and the cylinder body is kept horizontal and moves relative to the ground; the power generation module is electrically connected with the energy storage element, and the rolling element rotates around the cylinder body to enable the power generation module to generate electric energy and charge the energy storage element, so that autonomous power generation and charging in the moving process are realized.

Description

Self-generating energy storage equipment

Technical Field

The utility model relates to an energy storage power supply technical field especially relates to a from electricity generation energy storage equipment.

Background

The larger the capacity of the existing energy storage power supply is, the heavier the existing energy storage power supply is, and the large-capacity energy storage device has difficulty in moving. The existing solutions mainly include the following two types: firstly, the energy storage power supply is moved by adding an additional sliding device at the bottom of the energy storage power supply; and two pulleys are additionally arranged on one side of the bottom of the energy storage power supply, so that the energy storage power supply is lifted during movement, and the energy storage power supply is moved by sliding of the pulleys. Above-mentioned two kinds of modes all need add extra mounting bracket on the energy storage power to installation slider or pulley destroy the wholeness of energy storage power, influence pleasing to the eye degree, and the great portable not convenient to carry of whole energy storage power volume. In addition, the existing energy storage power supply can only charge the energy storage power supply through a charging socket on the existing energy storage power supply, and does not have an automatic charging function.

Therefore, a self-generating energy storage device is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a from electricity generation energy storage equipment, small in size conveniently carries, can be at the removal in-process independently generate electricity and charge.

In order to realize the purpose, the following technical scheme is provided:

a self-generating energy storage device comprising:

the energy storage device comprises a cylinder, an energy storage element and a control element for realizing charging and discharging control of the energy storage element are arranged in the cylinder, and a transmission module with a charging and discharging function is arranged on the cylinder;

the rolling piece is rotatably sleeved outside the barrel body and can rotate around the central axis of the barrel body;

the rolling piece rotates around the cylinder body to enable the power generation module to generate electric energy and charge the energy storage element.

As an alternative to the self-generating energy storage device, the power generation module includes a magnet and a coil, one of which is provided on the cylinder and the other of which is provided on the rolling member, the rolling member being rotatable relative to the cylinder to rotate the magnet relative to the coil and cause the coil to generate electric energy and charge the energy storage element.

As an alternative of the self-generating energy storage device, a plurality of magnets are annularly arranged on the rolling member by taking the central axis of the cylinder as a center; the coils are arranged on the barrel, and the rolling piece rotates to drive the magnets to rotate, so that the coils generate electric energy and charge the energy storage element.

As an alternative to the self-generating energy storage device, the magnet is embedded inside the rolling member.

As an alternative to the self-generating energy storage device, the cylinder is made of an iron material, and the plurality of coils are wound around the outer circumferential wall of the cylinder.

As an alternative of the self-generating energy storage device, the transmission module is a plug interface, a screw cap is arranged outside the plug interface, and the screw cap can rotate relative to the plug interface to cover the plug interface or enable the plug interface to be in an exposed state.

As an alternative of the self-generating energy storage device, the number of the sockets is multiple, the number of the screw caps is one, and one screw cap can cover all the sockets; or the number of the insertion ports is multiple, and one screw cap is arranged outside each insertion port.

As an alternative of the self-generating energy storage device, the transmission module is a wireless transmission induction device.

As an alternative to the self-generating energy storage device, the rolling member is a tire; or the rolling element comprises a matching layer and a rubber layer coated outside the matching layer.

As an alternative of the self-generating energy storage equipment, the self-generating energy storage equipment further comprises a handle, and the handle is fixedly connected with the barrel and can pull and hold the barrel to move.

As an alternative of the self-generating energy storage device, the handle comprises a pull rod and a connecting frame, the connecting frame is fixedly connected with the cylinder body, the pull rod is rotatably arranged on the connecting frame and can be fixed relative to the connecting frame, and the connecting frame can be supported on the ground to enable the cylinder body to be parked.

As an alternative scheme of the self-generating energy storage device, the connecting frame comprises a U-shaped frame and a fixing ring, the pulling rod is pivoted on the bottom surface of the U-shaped frame, the two support arms of the U-shaped frame are fixedly connected with the fixing ring, and the fixing ring is fixedly connected with the barrel.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a self-generating energy storage device, which comprises a barrel body, a rolling element and a power generation module, wherein the barrel body is of a tubular structure with two closed ends, an energy storage element and a control element for realizing the charging and discharging control of the energy storage element are arranged in the barrel body, and a transmission module with the charging and discharging function is arranged on the barrel body; the rolling part is rotatably sleeved outside the cylinder body and can rotate around the central axis of the cylinder body, so that a wheel-shaped structure is formed by the rolling part and the cylinder body, the friction force between the rolling part and the ground can be reduced, the energy storage equipment can be conveniently moved, the rolling part rolls relative to the ground, and the cylinder body is kept horizontal and moves relative to the ground; the power generation module is electrically connected with the energy storage element, and the rolling element rotates around the cylinder body to enable the power generation module to generate electric energy and charge the energy storage element, so that autonomous power generation and charging in the moving process are realized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a first schematic diagram of a self-generating energy storage device according to a first embodiment of the present invention;

fig. 2 is a schematic diagram two of the self-generating energy storage device provided in the first embodiment of the present invention;

fig. 3 is an exploded schematic view of a self-generating energy storage device according to a first embodiment of the present invention;

fig. 4 is an exploded schematic view of a self-generating energy storage device provided by the second embodiment of the present invention;

fig. 5 is a first schematic diagram of a power generation module according to a second embodiment of the present invention;

fig. 6 is a second schematic diagram of a power generation module provided in the second embodiment of the present invention;

fig. 7 is a schematic structural diagram of a self-generating energy storage device provided by a third embodiment of the present invention in one direction;

fig. 8 is a schematic structural view of a handle according to a third embodiment of the present invention;

fig. 9 is a schematic structural diagram of another direction of the self-generating energy storage device provided by the third embodiment of the present invention.

Reference numerals:

1. a barrel; 11. a panel; 111. an interface; 12. a barrel portion; 121. a first annular groove;

2. a rolling member; 21. a matching layer; 211. a second annular groove; 22. a rubber layer;

3. a handle; 31. pulling the holding rod; 311. a hand-held portion; 3111. avoiding the concave surface; 312. a connecting portion; 32. a connecting frame; 321. a U-shaped frame; 322. a fixing ring;

4. an energy storage element;

5. a control element;

6. a rotation promoting element;

7. screwing a cover;

8. a magnet;

9. and a coil.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Example one

As shown in fig. 1 to 3, the present embodiment provides a self-generating energy storage device, which includes a cylinder 1 and rolling members 2.

Specifically, an energy storage element 4 and a control element 5 for realizing charging and discharging control of the energy storage element 4 are arranged in the cylinder 1; the rolling part 2 is rotatably sleeved outside the cylinder body 1, and the rolling part 2 can roll on the ground to drive the cylinder body 1 to move relative to the ground. This self-generating energy storage equipment is through establishing rolling member 2 at 1 overcoat of barrel for whole energy storage equipment is a wheel-like, can directly drag rolling member 2 and realize energy storage equipment's removal, even can also realize the mobility of preferred at the heavy weight energy storage, consequently satisfies the demand of user's large capacity. In addition, the rolling member 2 rotates relative to the barrel 1, the barrel 1 keeps horizontal and moves relative to the ground, the energy storage element 4 and the control element 5 in the barrel 1 cannot be damaged, the movement and the carrying are convenient, the integrity of the equipment is better, and the appearance is attractive.

Alternatively, the energy storage element 4 may include a battery pack, and the control element 5 may include electronic components such as an inverter and a PCB board. The battery pack can be charged and discharged, the inverter can convert direct current of the battery pack into alternating current electric energy, and the PCB can realize the control function of the battery pack and the inverter.

Optionally, the cylinder 1 is a cylindrical structure with two closed ends. In other embodiments, the barrel 1 may have other shapes as long as the rolling member 2 can be sleeved on the barrel 1 to facilitate the integral movement of the barrel 1, which is not limited herein.

Illustratively, the tubular body 1 is preferably a tubular structure, the tubular body 1 includes a panel 11 and a tubular part 12, and the panel 11 is fixedly connected to both ends of the tubular part 12.

In order to facilitate charging and discharging, the storage cavity 1 is provided with a transmission module with charging and discharging functions. Alternatively, the transmission module may be in a plug-in form or a wireless induction form.

In this embodiment, the transmission module is an electrical interface 111, the panel 11 is provided with a socket 111, and the socket 111 is electrically connected to the energy storage element 4 to realize the charging or discharging function of the energy storage element 4. In other embodiments, the transmission module may be a wireless transmission sensing device, and can implement a wireless charging and discharging function.

Illustratively, the number of the sockets 111 is multiple, and the models of the sockets 111 are multiple, and may include but are not limited to an AC socket and a USB socket, and the external charging and discharging function of the energy storage device may be implemented through related interfaces. Certainly, the socket 111 may further include but is not limited to one or more of a Type-C socket, an HDMI interface, a VGA interface, and a DVI interface, which may be specifically designed as required and will not be described herein again.

Optionally, a screw cap 7 is provided outside the socket 111, and the screw cap 7 can rotate relative to the barrel 1 to cover the socket 111 or expose the socket 111. Preferably, the rotation axis of the screw cap 7 is parallel to or coincident with the central axis of the barrel 1, and the screw cap 7 is rotated to have two states: 1) in the covering state, the relevant interface 111 is covered, and foreign matters enter the interface 111 or the interface 111 is polluted in the non-working state; 2) in the open state, the socket 111 is exposed, and a user can charge and discharge through the socket 111.

Optionally, there are a plurality of the sockets 111, the number of the screw caps 7 is one, and one screw cap 7 can cover all the sockets 111. Optionally, in other embodiments, there are multiple sockets 111, and a screw cap 7 is disposed outside each socket 111.

Illustratively, in the embodiment, the plurality of sockets 111 are all located on one half of the panel 11, the screw cap 7 is semicircular, and the screw cap 7 can be rotated to cover the plurality of sockets 111 simultaneously, and can also be rotated to the other half of the panel 11 to expose the sockets 111.

Alternatively, the rolling members 2 are wrapped around the outer circumferential surface of the cylinder 1, specifically, the rolling members 2 are wrapped around the outer circumferential surface of the cylinder 12, and the rolling members 2 can rotate around the central axis of the cylinder 1. When the rolling member 2 rolls relative to the ground, the cylinder 1 is kept horizontal and moves relative to the ground, so that the cylinder 1 and the energy storage element 4 and the control element 5 inside the cylinder are moved.

In order to improve the overall stability of the energy storage device, the center of gravity of the entire cylinder 1, the energy storage element 4 and the control element 5 is deviated from the central axis of the cylinder 1. Therefore, the whole energy storage device is always in a certain specific direction in a flat static state, for example, in a tumbler-like shape, which is helpful for keeping the stability of the electronic elements inside the barrel 1, and meanwhile, the energy storage device can not roll randomly when being on flat ground or on a specific inclined ground, and the energy storage device can be ensured to be in a stable position. When the center of gravity of the cylinder 1, the energy storage element 4 and the control element 5 is located at the position of the central axis of the cylinder 1, the cylinder 1 rolls very easily, which is not beneficial to the stability of the whole energy storage device.

In order to keep the energy storage device in a stable state, the energy storage element 4 is arranged on one side of the cylinder 1 close to the ground. For example, the battery pack is centrally disposed on one side of the cylinder 1 close to the central axis, and the inverter and the PCB are disposed on the other side of the cylinder 1 close to the central axis, although the battery pack occupies the same large/close space, the whole weight of the battery pack is much greater than that of the inverter and the PCB, so the weight is centrally disposed on one side of the battery pack, and the center of gravity is biased toward one side of the battery pack.

In order to facilitate the rotation of the rolling member 2 relative to the cartridge 1, the rolling member 2 is in rotational engagement with the cartridge 1 via the rotation promoting element 6.

Optionally, the rotation promoting element 6 is a bearing or a lubricating oil.

Alternatively, the rotation between the rolling member 2 and the cylinder 1 can also be ensured in the following manner: the outer peripheral surface of the cylinder body 1 is provided with a first annular groove 121 which is coaxial with the central axis of the cylinder body 1, the inner wall of the rolling element 2 is provided with a second annular groove 211 which is coaxial with the central axis of the cylinder body 1, the first annular groove 121 and the second annular groove 211 are matched to form an annular accommodating groove, the rotation promoting element 6 is a ball, and the balls are rotatably arranged in the annular accommodating groove.

Illustratively, the number of the first annular grooves 121 is two, two first annular grooves 121 are arranged at two ends of the outer circumferential surface of the cylinder 1 at intervals, the number of the second annular grooves 211 is two, and the second annular grooves 211 and the first annular grooves 121 are arranged in a one-to-one correspondence manner.

Optionally, the rolling member 2 comprises a matching layer 21 and a rubber layer 22, the matching layer 21 is in running fit with the cylinder 1, the rubber layer 22 covers the matching layer 21, the rubber layer 22 can increase the friction force between the rubber layer 22 and the ground to enable the rolling member 2 to rotate, the anti-abrasion function is further provided, the service life of the rolling member 2 is prolonged, and when the rubber layer 22 is abraded to influence the rolling member 2 to roll, the rubber layer 22 can be replaced to prolong the service life of the whole energy storage device. In other embodiments, the rolling member 2 may be a tire or the outer circumferential side of the rolling member 2 may be covered with the rubber layer 22, as long as the replaceable function can be achieved and the service life of the energy storage device can be prolonged, which is not limited herein.

Exemplarily, the second annular groove 211 may be disposed inside the matching layer 21.

Optionally, the energy storage device that this embodiment provided still includes handle 3, and the one end of handle 3 is fixed on barrel 1, and the convenient handheld pulling of the other end to in pulling energy storage device overall movement. Preferably, the handle 3 is a folding handle, and the handle 3 can abut against the ground after being folded, so that the holding function of the energy storage device is realized.

Example two

The difference between this embodiment and the first embodiment is:

as shown in fig. 4 to 6, the self-generating energy storage device provided in this embodiment further includes an electricity generating module, where the electricity generating module is electrically connected to the energy storage element 4, and when the rolling member 2 rotates around the cylinder 1, the electricity generating module can generate electric energy and charge the energy storage element 4.

Preferably, in this embodiment, the cylinder 1 is a cylinder structure with two closed ends, which ensures that the cylinder 1 remains stationary when the rolling elements 2 rotate relative to the cylinder 1.

Alternatively, the power generation module comprises a magnet 8 and a coil 9, one of the magnet 8 and the coil 9 is arranged on the cylinder 1, the other is arranged on the rolling member 2, and the rolling member 2 can rotate relative to the cylinder 1, so that the magnet 8 rotates relative to the coil 9, and the coil 9 generates electric energy and charges the energy storage element 4.

Exemplarily, as shown in fig. 5, a plurality of magnets 8 are arranged on the rolling member 2 around the central axis of the cylinder 1, that is, the rolling member 2 cooperates with the magnets 8 to form a rotor of the power generation module; the plurality of coils 9 are arranged on the cylinder 1, namely the cylinder 1 and the coils 9 form a stator of the power generation module, and the rolling piece 2 rotates to drive the magnet 8 to rotate, so that the coils 9 generate electric energy and charge the energy storage element 4. Specifically, a winding post is formed on the outer wall of the barrel 1, and the wire harness is wound around the winding post to form the coil 9. The matching layer 21 of the rolling element 2 is provided with an embedded groove, and the magnet 8 is embedded in the embedded groove. Preferably, the magnets 8 are embedded inside the rolling elements 2, constituting the rotor of the power generation module.

Preferably, the cylinder 1 is made of a ferrous material, and a plurality of coils 9 are wound on the outer circumferential wall of the cylinder 1 to constitute a stator core of the power generation module.

Illustratively, as shown in fig. 6, the rolling member 2 includes a matching layer 21 and a rubber layer 22, the coil 9 is wound around the matching layer 21 with the central axis of the cylinder 1 as the center, the plurality of magnets 8 are wound around the outer wall of the cylinder 1 with the central axis of the cylinder 1 as the center, that is, the cylinder 1 and the magnets 8 constitute the stator of the power generation module, and the rolling member 2 rotates to drive the coil 9 to rotate, so that the coil 9 generates electric energy and charges the energy storage element 4. Specifically, a winding post is formed on an inner wall of the matching layer 21 of the rolling member 2, and a wire harness is wound on the winding post to form the coil 9. An embedded groove is formed in the outer wall of the barrel body 1, and the magnet 8 is embedded in the embedded groove.

EXAMPLE III

As shown in fig. 7 to 9, the present embodiment provides a handle 3 that can be applied to the energy storage device in the first embodiment and the second embodiment.

Preferably, the handle 3 comprises a pull rod 31 and a connecting frame 32, the pull rod 31 is connected with a first end of the connecting frame 32, a second end of the connecting frame 32 is fixedly connected with the barrel 1, the pull rod 31 can be folded with the connecting frame 32, and the connecting frame 32 is supported on the ground to enable the barrel 1 to be held. This handle 3 is folding type handle, and when needing to remove energy storage equipment, the handheld pull rod 31 of user, pulling energy storage equipment, when needs are static, pull rod 31 and rotate and link 32 is folding to make the one end butt of link 32 subaerial, guarantee the stability of whole equipment.

Preferably, the pulling rod 31 is rotatably disposed on the first end of the connecting frame 32 and can be fixed relative to the connecting frame 32, and the pulling rod 31 can be rotatably folded relative to the connecting frame 32 and can be abutted on the rolling member 2.

Preferably, the pulling rod 31 includes a handle portion 311 and a connecting portion 312, the connecting portion 312 is pivotally connected to a first end of the connecting frame 32, and the connecting portion 312 has two states of rotating relative to the connecting frame 32 and fixing relative to the connecting frame 32. The handheld part 311 is used for a user to realize a pulling function, the connecting part 312 is connected with the connecting frame 32, and the connecting part 312 can rotate relative to the connecting frame 32, so that the handheld part 311 can rotate and fold relative to the connecting frame 32; when the user holds the energy storage device, the holding portion 311 is extended, the user holds the holding portion 311 to move the energy storage device, and when the user needs to be stationary, the holding portion 311 can be folded, so that the connecting frame 32 abuts against the ground, and the holding function of the energy storage device is realized. In addition, when the energy storage equipment needs to be stored and transported in some special places, the size of the energy storage equipment can be effectively reduced by folding the handle, and the energy storage equipment is convenient to transport and store.

Alternatively, a button may be disposed on the holding portion 311 of the handle 3, and a linkage mechanism may be disposed inside the handle 3, so that the connecting portion 312 can rotate relative to the connecting frame 32 by pressing the button, or the connecting portion 312 and the connecting frame 32 are fixed.

Preferably, an avoidance concave surface 3111 is provided on a side of the grip portion 311 close to the rolling member 2. The avoiding concave surface 3111 can avoid the wheel surface of the rolling member 2, so that the folding angle of the handheld portion 311 and the connecting frame 32 is smaller, the volume of the folded handle 3 is smaller, and the occupied space is smaller.

Optionally, in order to facilitate connection between the connecting frame 32 and the barrel 1, the connecting frame 32 includes a U-shaped frame 321 and a fixing ring 322, the pulling rod 31 (specifically, the connecting portion 312) is pivoted on a bottom surface of the U-shaped frame 321, the fixing ring 322 is fixedly connected to both arms of the U-shaped frame 321, and the fixing ring 322 is fixedly connected to the barrel 1.

Preferably, the center point of the fixing ring 322 is located at the end of the arm of the U-shaped holder 321. The end face of the fixing ring 322 is provided with a threaded hole, and the fixing ring 322 is fixed on the cylinder 1 through a fastener.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (12)

1. A self-generating energy storage device, comprising:

the device comprises a barrel (1), wherein an energy storage element (4) and a control element (5) for realizing charging and discharging control of the energy storage element (4) are arranged in the barrel (1), and a transmission module with a charging and discharging function is arranged on the barrel (1);

the rolling piece (2) is rotatably sleeved outside the cylinder body (1), and the rolling piece (2) can rotate around the central axis of the cylinder body (1);

the power generation module is electrically connected with the energy storage element (4), and the rolling piece (2) rotates around the barrel (1) to enable the power generation module to generate electric energy and charge the energy storage element (4).

2. The self-generating energy storage device according to claim 1, characterized in that the generating module comprises a magnet (8) and a coil (9), one of the magnet (8) and the coil (9) is arranged on the cylinder (1) and the other is arranged on the rolling member (2), and the rolling member (2) can rotate relative to the cylinder (1) to rotate the magnet (8) relative to the coil (9) and to cause the coil (9) to generate electric energy and charge the energy storage element (4).

3. The self-generating energy storage device according to claim 2, characterized in that a plurality of magnets (8) are arranged on the rolling member (2) in a ring shape with the central axis of the cylinder (1) as the center; the coils (9) are arranged on the barrel (1), and the rolling piece (2) rotates to drive the magnet (8) to rotate, so that the coils (9) generate electric energy and charge the energy storage element (4).

4. The self-generating energy storage device according to claim 3, wherein the magnet (8) is embedded inside the rolling member (2).

5. The self-generating energy storage device according to claim 3, wherein the cylinder (1) is made of a ferrous material, and a plurality of the coils (9) are wound on the outer circumferential wall of the cylinder (1).

6. The self-generating energy storage device according to claim 1, wherein the transmission module is an interface (111), a rotary cover (7) is arranged outside the interface (111), and the rotary cover (7) can rotate relative to the interface (111) to cover the interface (111) or enable the interface (111) to be exposed.

7. The self-generating energy storage device according to claim 6, wherein the number of the insertion ports (111) is multiple, the number of the screw caps (7) is one, and one screw cap (7) can cover all the insertion ports (111); or the number of the insertion ports (111) is multiple, and one screw cap (7) is arranged outside each insertion port (111).

8. The self-generating energy storage device according to claim 1, wherein the transmission module is a wireless transmission induction device.

9. The self-generating energy storage device according to claim 1, wherein the rolling member (2) is a tire; or the rolling element (2) comprises a matching layer (21) and a rubber layer (22) coated outside the matching layer (21).

10. The self-generating energy storage device according to any one of claims 1-9, characterized in that the self-generating energy storage device further comprises a handle (3), wherein the handle (3) is fixedly connected with the cylinder (1) and can pull the cylinder (1) to move.

11. The self-generating energy storage device according to claim 10, wherein the handle (3) comprises a holding rod (31) and a connecting frame (32), the connecting frame (32) is fixedly connected with the barrel (1), the holding rod (31) is rotatably arranged on the connecting frame (32) and can be fixed relative to the connecting frame (32), and the connecting frame (32) can be supported on the ground to enable the barrel (1) to be parked.

12. The self-generating energy storage device according to claim 11, wherein the connecting frame (32) comprises a U-shaped frame (321) and a fixing ring (322), the holding rod (31) is pivoted on the bottom surface of the U-shaped frame (321), the fixing ring (322) is fixedly connected to each of two arms of the U-shaped frame (321), and the fixing ring (322) is fixedly connected to the barrel (1).

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