Energy storage device with driving function

Abstract

The utility model relates to the technical field of power supply equipment, and particularly discloses an energy storage device with a driving function, which is low in production cost and easy to maintain and comprises an energy storage main body, a base is fixedly mounted at the bottom of the energy storage main body, a driving component is arranged at one end of the base, and a driven wheel is mounted on the lower surface of the other end of the base. The driving assembly comprises a mounting base fixed to the lower surface of the base, a mounting rod located below the mounting base and fixedly connected with the mounting base, two driving wheel sets oppositely arranged and rotationally mounted at the two ends of the mounting rod, and a first motor located above the base, wherein an output shaft of the first motor corresponds to one driving wheel set. The second motor is located above the first motor, and an output shaft of the second motor corresponds to the other driving wheel set; the first upper synchronous belt wheel is fixedly connected with the output shaft of the first motor and is in driving connection with one driving wheel set through a first synchronous belt penetrating through the base; and the second upper synchronous belt wheel is fixedly connected with an output shaft of the second motor and is in driving connection with the other driving wheel set through a second synchronous belt penetrating through the base.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply equipment, in particular to an energy storage device with a driving function. Background Art

[0002] Outdoor power supplies and mobile energy storage devices are important energy storage devices for outdoor activities such as camping and outdoor team building. They are used to power various electrical equipment in outdoor activities. They provide backup power through household energy storage functions to cope with power outages in the power grid and balance energy supply and demand. In order to meet the above needs, the requirements for the capacity and power of outdoor power supplies and mobile energy storage devices are relatively high. As the capacity, power and function increase, the weight of the energy storage device will also increase synchronously. The weight of some large-capacity energy storage devices has exceeded 50kg, making it difficult to move the energy storage device during daily use. The Chinese utility model patent (CN 217956050U) discloses an energy storage device with a motor wheel, which improves the transportation efficiency of the energy storage device by arranging two motor wheel assemblies on the main body of the energy storage device, providing electrical energy to the motor wheel assembly by the main body of the energy storage device, and using the motor wheel body to drive the movement of the entire energy storage device. However, the above energy storage device uses a hub motor, which is relatively expensive and will increase the production cost of the entire energy storage device. In addition, the wheel of the hub motor constitutes an integral part of the hub motor, and the maintainability of the hub motor is poor. When the wheel is damaged, the entire hub motor needs to be replaced, further increasing the maintenance cost of the energy storage device. Utility Model Content

[0003] Based on this, it is necessary to provide an energy storage device with a driving function that has low production cost and is easy to maintain in order to address the above-mentioned shortcomings.

[0004] An energy storage device with a driving function comprises an energy storage body, a base is fixedly mounted on the bottom of the energy storage body, a driving assembly is arranged at one end of the base, a driven wheel is mounted on the lower surface of the other end of the base, the driving assembly comprises a mounting seat fixed to the lower surface of the base, a mounting rod located below the mounting seat and fixedly connected to the mounting seat, two driving wheel groups arranged opposite to each other and rotatably mounted at both ends of the mounting rod, a first motor located above the base and having an output shaft corresponding to one driving wheel group, a second motor located above the first motor and having an output shaft corresponding to another driving wheel group, a first upper synchronous pulley fixedly connected to the output shaft of the first motor and drivingly connected to one of the driving wheel groups through a first synchronous belt penetrating the base, and a second upper synchronous pulley fixedly connected to the output shaft of the second motor and drivingly connected to the other of the driving wheel groups through a second synchronous belt penetrating the base.

[0005] In one embodiment, the driving wheel assembly includes a driving wheel rotatably mounted on a mounting rod and a lower synchronous belt pulley located on the inner side of the driving wheel and rotatably mounted on the mounting rod, and the driving wheel is fixedly connected to the lower synchronous belt pulley.

[0006] In one embodiment, the ring side surfaces of the first upper synchronous belt pulley, the second upper synchronous belt pulley and the lower synchronous belt pulley are respectively provided with gear teeth, and the inner surfaces of the first synchronous belt and the second synchronous belt are respectively provided with belt teeth meshing with the gear teeth.

[0007] In one embodiment, the rotational matching portion between the driving wheel and the mounting rod and the rotational matching portion between the lower synchronous pulley and the mounting rod are respectively provided with bearings.

[0008] In one of the embodiments, the base is provided with a strip-shaped through hole penetrating the upper surface and the lower surface of the base, and the mounting seat is connected to the edge of the strip-shaped through hole by screws.

[0009] In one embodiment, the mounting seat is in an I-shaped structure, and a through-notch is provided on each side of the mounting seat. One of the through-notches corresponds to the first upper synchronous belt pulley and is used for passing the first synchronous belt, and the other through-notch corresponds to the second upper synchronous belt pulley and is used for passing the second synchronous belt.

[0010] In one of the embodiments, motor brackets extending toward the upper direction of the base are respectively fixed at the two penetration notches, and the first motor and the second motor are respectively fixed on the motor brackets.

[0011] In one of the embodiments, an adjustment hole is opened on the motor bracket, an adjustment pin is passed through the adjustment hole, the end of the adjustment pin extends out of the adjustment hole and abuts against the first synchronous belt or the second synchronous belt, and the insertion depth of the adjustment pin in the adjustment hole is adjustable to adjust the tightness of the first synchronous belt or the second synchronous belt.

[0012] In one embodiment, the output shaft of the first motor and the output shaft of the second motor are arranged in opposite directions.

[0013] In one embodiment, the diameter of the driving wheel is greater than the diameter of the driven wheel.

[0014] The energy storage device with driving function implemented in the utility model adopts two sets of motors and wheel belt combinations to control the rotation of driving wheels on both sides. By controlling the rotation speed of the two motors, the acceleration, deceleration, steering and other functions of controlling the energy storage device during transportation are achieved. While reducing the difficulty of moving the energy storage device, it replaces the hub motor drive mode, significantly reducing the production cost and movement cost of the energy storage device; when the wheel or the motor is damaged, the drive assembly can be removed from the energy storage body as a whole and repaired, reducing the difficulty and maintenance cost of the wheel and the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of an energy storage device in one embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the driving assembly and the base in one embodiment of the utility model;

[0017] Figure 3 A rear view of the driving assembly and the base in one embodiment of the utility model;

[0018] Figure 4 A rear view of a base in one embodiment of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of a driving assembly in one embodiment of the utility model;

[0020] Figure 6 It is a front view of a driving assembly in one embodiment of the utility model;

[0021] Figure 7 A bottom view of a driving assembly in one embodiment of the utility model;

[0022] Figure 8 This is a schematic structural diagram of a drive assembly in one embodiment of the utility model with one side of the drive components removed;

[0023] Fig. 9 It is a structural schematic diagram of a mounting base in one embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0025] Please combine Figure 1-9The utility model discloses an energy storage device with a driving function that has low production cost and is easy to maintain. The energy storage device includes an energy storage body 100. The energy storage body 100 includes a shell, a power module housed in the inner cavity of the shell and used to store electric energy, and a control circuit board electrically connected to the power module and controlling the energy storage body 100 to switch to different working modes. The working modes of the energy storage body 100 include a charging mode in which the power module obtains electric energy from the external power supply for charging when the power module is insufficient and is electrically connected to an external power supply, and a discharging mode in which the power module transmits electric energy to the power taking device when the power module is electrically connected to the power taking device. A base 200 is fixedly installed at the bottom of the energy storage body 100, that is, the base 200 is fixedly connected to the bottom of the shell. In this embodiment, the base 200 can constitute a part of the energy storage device together with the shell, that is, the bottom of the shell is through, and the bottom of the shell is blocked by the base 200; the base 200 can also be used only as a connecting piece between the driving component and the energy storage device and the driven wheel and the energy storage device. In this case, the bottom of the shell is closed, and the base 200 is fixedly connected to the bottom of the shell by screws. In this way, the connection body composed of the base 200, the driving component and the driven wheel of this embodiment can be uniformly disassembled and installed on any energy storage device that is suitable for its size, so as to realize the mobile drive of the energy storage device.

[0026] A driving assembly 300 is provided at one end of the base 200, and a driven wheel 400 is installed on the lower surface of the other end of the base 200. The driven wheel 400 is installed on the base 200 by screws to a wheel frame 410 on the lower surface of the base 200, and the driven wheel 400 is pivotally installed on the wheel frame 410 to ensure the normal rotation of the driven wheel 400. The driving assembly 300 and the driven wheel 400 are used together to support the energy storage body 100, and the driven wheel 400 rotates under the drive of the driving assembly 300 to reduce the resistance of the energy storage device during movement. Specifically, the driving assembly 300 includes a mounting seat 310 fixed on the lower surface of the base 200, a mounting rod 320 located below the mounting seat 310 and fixedly connected to the mounting seat 310, two driving wheel groups arranged opposite to each other and rotatably mounted at both ends of the mounting rod 320, a first motor 330 located above the base 200 and having an output shaft corresponding to one driving wheel group, a second motor 340 located above the first motor 330 and having an output shaft corresponding to another driving wheel group, a first upper synchronous pulley 360 fixedly connected to the output shaft of the first motor 330 and drivingly connected to one driving wheel group through a first synchronous belt 350 passing through the base 200, a second upper synchronous pulley 380 fixedly connected to the output shaft of the second motor 340 and drivingly connected to the other driving wheel group through a second synchronous belt 370 passing through the base 200, and the mounting rod 320 includes a first mounting portion 321 extending from one side of the mounting seat 310 and used to support the driving wheel group on one side, and a second mounting portion 322 extending from the other side of the mounting seat 310 and used to support the driving wheel group on the other side. It should be noted that the mounting rod can be detachably connected to the mounting seat, for example, the mounting rod and the mounting seat are threadedly connected; or the mounting rod and the mounting seat can be formed as an integral part. Usually, the mounting rod is made of steel and the mounting seat is made of aluminum. The mounting rod can be formed onto the mounting seat by casting. After molding, the mounting rod and the mounting seat form an integrated structure.

[0027] Preferably, the output shaft of the first motor 330 and the output shaft of the second motor 340 are arranged back to back. For example, when the output shaft of the first motor 330 is adjacent to the driving wheel group on the left side of the energy storage device, the output shaft of the second motor 340 is adjacent to the driving wheel group on the right side of the energy storage device, and the first upper synchronous pulley 360 and the second upper synchronous pulley 380 are disposed on both sides of the energy storage device.

[0028] In this embodiment, the first motor 330 is used to independently drive the driving wheel group on one side of the energy storage device, and the second motor 340 is used to independently drive the driving wheel group on the other side of the energy storage device. In this way, by controlling the rotation speed of the first motor 330 and the second motor 340, when the rotation speeds of the first motor 330 and the second motor 340 are the same and accelerate synchronously, the moving energy storage device can be accelerated; when the rotation speeds of the first motor 330 and the second motor 340 are the same and decelerate synchronously, the moving energy storage device can be decelerated; when the rotation speeds of the first motor 330 and the second motor 340 are different, the energy storage device will rotate toward the side with the slower speed of the driving wheel group, thereby realizing the steering of the energy storage device.

[0029] Please combine Figure 5-8 The driving wheel group includes a driving wheel 390 rotatably mounted on the mounting rod 320 and a lower synchronous pulley 391 located on the inner side of the driving wheel 390 and rotatably mounted on the mounting rod 320. The driving wheel 390 is fixedly connected to the lower synchronous pulley 391, so that when the lower synchronous pulley 391 rotates driven by the first synchronous belt 350 or the second synchronous belt 370, the driving wheel 390 can rotate simultaneously with the lower synchronous pulley 391, thereby transmitting the kinetic energy at the first motor 330 or the second motor 340 to the driving wheel 390 group, so as to achieve the purpose of controlling the rotation of the driving wheel 390. Preferably, the driving wheel 390 can be welded or screwed to the lower synchronous pulley 391. In other embodiments, the driving wheel 390 and the lower synchronous pulley 391 are integrally formed.

[0030] In order to improve the reliability of the driving control of the driving wheel 390 by the first motor 330 and the second motor 340, in the present embodiment, the ring side surfaces of the first upper synchronous pulley 360, the second upper synchronous pulley 380 and the lower synchronous pulley 391 are respectively provided with gear teeth, and the inner surfaces of the first synchronous belt 350 and the second synchronous belt 370 are respectively provided with belt teeth meshing with the gear teeth. In this way, slippage can be avoided during the belt transmission between the first upper synchronous pulley 360 and the lower synchronous pulley 391 and the belt transmission between the second upper synchronous pulley 380 and the lower synchronous pulley 391, so that the rotation speed of the two driving wheels 390 can be accurately controlled by controlling the rotation speed of the first motor 330 and the second motor 340. In order to reduce the resistance of the driving wheel 390 and the lower synchronous pulley 391 during rotation, the rotating matching parts of the driving wheel 390 and the mounting rod 320 and the rotating matching parts of the lower synchronous pulley 391 and the mounting rod 320 are respectively provided with bearings, and the bearings are installed on the lower synchronous pulley and the driving wheel by interference fit. The side edge of the driving wheel 390 is provided with an annular structure for fixing the lower synchronous pulley 391, and both sides of the first upper synchronous pulley 360, the second upper synchronous pulley 380 and the lower synchronous pulley 391 are provided with retaining rings for limiting the movement of the corresponding synchronous belts.

[0031] Please combine Figure 2-4 as well as Fig. 9The base 200 is provided with a strip-shaped through hole 210 that passes through the upper and lower surfaces of the base 200, and the mounting seat 310 is connected to the edge of the strip-shaped through hole 210 by screws. In this embodiment, a row of screw holes 211 are respectively provided on the two opposite sides of the strip-shaped through hole 210 on the base 200, and the screw holes 211 are used to provide mounting positions for the mounting seat to be connected to the base by screws. By providing the strip-shaped through hole 210 on the base 200, during the assembly process of the energy storage device, the drive assembly 300 can be assembled first, and then the assembled drive assembly 300 is penetrated through the strip-shaped through hole 210 as a whole and connected to the screws on the edge of the strip-shaped through hole 210 by the mounting seat 310, so as to realize the installation of the drive assembly 300 on the base 200; similarly, when the driving wheel 390, the first motor 330 or the second motor 340 needs to be repaired, the drive assembly 300 can be removed from the base 200 as a whole and repaired, which reduces the maintenance difficulty of the drive assembly 300 of the energy storage device.

[0032] In one embodiment, the mounting seat 310 is an I-shaped structure, and a through-connection notch 311 is provided on each side of the mounting seat 310. One through-connection notch 311 corresponds to the first upper synchronous belt pulley 360 and is used to pass the first synchronous belt 350, and the other through-connection notch 311 corresponds to the second upper synchronous belt pulley 380 and is used to pass the second synchronous belt 370. Further, motor brackets 312 extending toward the upper direction of the base 200 are fixed to the two through-connection notches 311, and the first motor 330 and the second motor 340 are fixed to the motor brackets 312, respectively. Preferably, an adjustment hole is provided on the motor bracket 312, and an adjustment pin is provided in the adjustment hole. The end of the adjustment pin extends out of the adjustment hole and abuts against the first synchronous belt 350 or the second synchronous belt 370. The insertion depth of the adjustment pin in the adjustment hole is adjustable to adjust the tightness of the first synchronous belt 350 or the second synchronous belt 370. Specifically, the adjustment hole can be a threaded hole, and the adjustment pin can be a threaded column. The depth of the adjustment pin inserted into the adjustment hole can be controlled by rotating the adjustment pin, thereby changing the length of the end of the adjustment pin extending out of the adjustment hole. The tension of the first synchronous belt 350 and the second synchronous belt 370 can be adjusted by squeezing the end of the adjustment pin on the first synchronous belt 350 or the second synchronous belt 370, thereby achieving the purpose of adjusting the tightness of the first synchronous belt 350 and the second synchronous belt 370. Please refer to Figure 5In another embodiment, a strip hole 313 extending in the height direction of the motor bracket 312 is provided on the motor bracket 312. During the installation of the motor, the height of the motor installation height can be fine-tuned by adjusting the height of the installation position on the motor relative to the strip hole 313, and by penetrating the strip hole and inserting the screws of the motor housing to lock it. In this way, the distance between the lower synchronous pulley and the first upper synchronous pulley can be adjusted, and the distance between the lower synchronous pulley and the second upper synchronous pulley can be adjusted, so as to achieve the purpose of adjusting the tightness of the first synchronous belt and the second synchronous belt. It should be noted that in this embodiment, when the adjustment pin is used to adjust the tightness of the synchronous belt, a tensioning wheel structure is installed on the adjustment pin. In this way, while the transmission reliability is improved by the tooth transmission between the synchronous belt and the synchronous pulley, the tensioning wheel structure on the adjustment pin forms a rolling contact with the belt teeth on the synchronous belt to avoid the problem of interference between the belt teeth and the gears when the synchronous belt is compressed.

[0033] In another embodiment, the mounting seat 310 is a rectangular structure, and the width of the mounting seat 310 is smaller than the length of the strip through hole 210. The mounting seat 310 is fixed at the center of the strip through hole 210, so that a through hole for passing the first synchronous belt 350 or the second synchronous belt 370 is formed on both sides of the mounting seat 310. In this case, a motor bracket 312 is fixed to each of the two side edges of the mounting seat 310 to fix the first motor 330 and the second motor 340. Similarly, in this embodiment, an adjustment hole is also opened on the motor bracket 312, and an adjustment pin for abutting against the first synchronous belt 350 and the second synchronous belt 370 is penetrated on the adjustment hole to achieve the purpose of adjusting the tightness of the first synchronous belt 350 and the second synchronous belt 370.

[0034] In one embodiment, the diameter of the driving wheel 390 is larger than the diameter of the driven wheel 400. In this embodiment, the diameter of the driving wheel 390 is designed to be larger than the diameter of the driven wheel 400, the purpose of which is to adapt to the fixing of the mounting seat 310 on the lower surface of the base 200, and to ensure that when the driving wheel 390 and the driven wheel 400 are in contact with the ground, the energy storage body 100 remains in an upright state, avoiding the problem of the energy storage device tipping over and being damaged due to the tilt of the energy storage device, so as to extend the service life of the energy storage device. Of course, in other embodiments, the diameter of the driven wheel can also be larger than the diameter of the driving wheel. In this case, the entire energy storage device can be kept horizontal by adjusting the distance between the mounting rod in the drive assembly and the mounting seat.

[0035] The above-mentioned energy storage device uses two sets of motors and wheel belt combinations to control the rotation of the driving wheels 390 on both sides. By controlling the rotation speed of the two motors, the acceleration, deceleration, steering and other functions of the energy storage device during transportation are controlled. While reducing the difficulty of moving the energy storage device, it replaces the hub motor drive method, significantly reducing the production cost and movement cost of the energy storage device; when the wheel or motor is damaged, the drive assembly 300 can be removed from the energy storage body 100 as a whole and repaired, reducing the difficulty and maintenance cost of the wheels and motors.

[0036] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An energy storage device with a driving function, comprising an energy storage body, characterized in that: A base is fixedly installed at the bottom of the energy storage body, a driving assembly is provided at one end of the base, and a driven wheel is installed on the lower surface of the other end of the base. The driving assembly includes a mounting seat fixed to the lower surface of the base, a mounting rod located below the mounting seat and fixedly connected to the mounting seat, two driving wheel groups arranged opposite to each other and rotatably installed at both ends of the mounting rod, a first motor located above the base and having an output shaft corresponding to one driving wheel group, a second motor located above the first motor and having an output shaft corresponding to another driving wheel group, a first upper synchronous pulley fixedly connected to the output shaft of the first motor and drivingly connected to one of the driving wheel groups through a first synchronous belt penetrating the base, and a second upper synchronous pulley fixedly connected to the output shaft of the second motor and drivingly connected to the other driving wheel group through a second synchronous belt penetrating the base.

2. The energy storage device according to claim 1, characterized in that: The driving wheel group comprises a driving wheel rotatably sleeved on the mounting rod and a lower synchronous belt wheel located on the inner side of the driving wheel and rotatably sleeved on the mounting rod, and the driving wheel is fixedly connected to the lower synchronous belt wheel.

3. The energy storage device according to claim 2, characterized in that: The ring side surfaces of the first upper synchronous belt pulley, the second upper synchronous belt pulley and the lower synchronous belt pulley are respectively provided with gear teeth, and the inner surfaces of the first synchronous belt and the second synchronous belt are respectively provided with belt teeth meshing with the gear teeth.

4. The energy storage device according to claim 2, characterized in that: The rotation matching part between the driving wheel and the mounting rod and the rotation matching part between the lower synchronous belt wheel and the mounting rod are respectively provided with bearings.

5. The energy storage device according to claim 1, characterized in that: The base is provided with a strip-shaped through hole which passes through the upper surface and the lower surface of the base, and the mounting seat is connected with edge screws of the strip-shaped through hole.

6. The energy storage device according to claim 5, characterized in that: The mounting seat is in an I-shaped structure, and a penetration notch is provided on each side of the mounting seat. One penetration notch corresponds to the first upper synchronous belt pulley and is used for passing the first synchronous belt, and the other penetration notch corresponds to the second upper synchronous belt pulley and is used for passing the second synchronous belt.

7. The energy storage device according to claim 6, characterized in that: Motor brackets extending toward the upper direction of the base are respectively fixed at the two penetration notches, and the first motor and the second motor are respectively fixed on the motor brackets.

8. The energy storage device according to claim 7, characterized in that: An adjustment hole is provided on the motor bracket, an adjustment pin is passed through the adjustment hole, the end of the adjustment pin extends out of the adjustment hole and abuts against the first synchronous belt or the second synchronous belt, and the insertion depth of the adjustment pin in the adjustment hole is adjustable to adjust the tightness of the first synchronous belt or the second synchronous belt.

9. The energy storage device according to claim 1, characterized in that: The output shaft of the first motor and the output shaft of the second motor are arranged in opposite directions.

10. The energy storage device according to claim 1, characterized in that: The diameter of the driving wheel is greater than the diameter of the driven wheel.

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