Energy storage assisting device and photovoltaic equipment

Abstract

The utility model relates to the field of solar energy, concretely relates to an energy storage power assisting device and photovoltaic equipment. First, an energy storage power assisting device includes pedestal, cam group, first traction piece, first elastic part, guide wheel and circular ring chain. The cam group rotatably sets up on the pedestal, and the cam group includes the first cam and the output wheel of fixed connection, and the first cam and the output wheel are sequentially arranged along the direction of cam group rotation axis, one end of first traction piece is fixedly connected with the first cam, the other end of first traction piece is fixedly connected with first elastic part, the guide wheel is fixedly set up on the pedestal, and the guide wheel axis is not parallel with the rotation axis of cam group, one end of circular ring chain is fixedly connected with the output wheel, and the other end is fixedly connected with external component through the guidance of guide wheel. Secondly, a photovoltaic equipment is provided.

Description

Technical Field

[0001] This utility model relates to the field of solar energy, and in particular to an energy storage assist device and photovoltaic equipment. Background Technology

[0002] In industries involving rotational transmission around an axis, such as photovoltaic tracking, radar, and robotic arms, traditional mechanical transmission systems generally suffer from high energy consumption and high drive costs. These systems typically rely on motors to provide driving force to overcome the load's gravity. Especially in heavy-load scenarios, high-power motors are required to meet torque demands, leading to a significant increase in energy consumption and higher system operating costs.

[0003] Taking photovoltaic (PV) tracking systems as an example, as the size of PV panels increases, their weight also increases. In existing technologies, the rotation of PV panels mainly relies on direct motor drive or power transmission through a reduction gear mechanism. However, when dealing with heavy PV panels, this driving method not only requires a more powerful motor but also consumes additional electrical energy to maintain the dynamic balance of the PV panels, severely impacting power generation efficiency and the overall economic viability of the system. Furthermore, in cloudy or rainy weather or under weak sunlight, the motor still needs to continuously supply power to maintain the tracking posture of the PV panels, further exacerbating energy waste.

[0004] Similar problems are also prevalent in applications such as radar antenna pitch adjustment and robotic arm end effector rotation. Traditional transmission structures lack an effective mechanism for balancing load gravity, causing the drive system to operate under high load for extended periods, affecting equipment lifespan and increasing maintenance frequency.

[0005] Therefore, there is an urgent need to design an energy storage and assist structure that can reduce drive energy consumption and decrease dependence on motor power, so as to improve system energy efficiency and achieve energy saving and cost reduction. Utility Model Content

[0006] This invention first proposes an energy storage assist device to solve the above-mentioned problems. Secondly, this invention proposes a photovoltaic device.

[0007] As a first aspect of this utility model, an energy storage and assist device is proposed, comprising:

[0008] Base;

[0009] A cam assembly is rotatably mounted on the base. The cam assembly includes a first cam and an output wheel that are fixedly connected. The first cam and the output wheel are arranged sequentially along the rotation axis of the cam assembly.

[0010] The first traction component has one end fixedly connected to the first cam;

[0011] The first elastic element, and the other end of the first traction element is fixedly connected to the first elastic element;

[0012] A guide wheel is fixedly mounted on the base, and the axis of the guide wheel is not parallel to the rotation axis of the cam assembly.

[0013] The circular chain has one end fixedly connected to the output wheel, and the other end fixedly connected to an external component after being guided by the guide wheel;

[0014] The energy storage assist device has an energy storage state. In the energy storage state, the circular chain is driven by an external force to rotate the cam group. The first cam wraps around the first traction member, causing the first elastic member to deform.

[0015] Furthermore, the axis of the guide wheel is perpendicular to the rotation axis of the cam assembly.

[0016] Furthermore, the cam assembly also includes a second cam, which is disposed between the first cam and the output wheel.

[0017] Furthermore, the first cam, the second cam, and the output wheel are integrally formed as a single structure.

[0018] Furthermore, it also includes a second traction member and a second elastic member arranged symmetrically with the first traction member and the first elastic member.

[0019] Furthermore, the first traction member and / or the second traction member are plate chains.

[0020] Furthermore, the first elastic element is a helical spring, and the energy storage and assist device further includes a spring sleeve, which is used to accommodate the first elastic element;

[0021] The spring sleeve has a pusher at one end away from the first cam, and the first traction member is fixedly connected to the first elastic member through the pusher.

[0022] Furthermore, when the first traction member is subjected to force, it drives the pushing member to move along the extension and retraction direction of the helical spring to compress the helical spring.

[0023] Furthermore, the circumferential contour of the output wheel that mates with the circular chain is a polygon, and / or the circumferential contour of the guide wheel that mates with the circular chain is a polygon.

[0024] As a second aspect of this utility model, a photovoltaic device is proposed, including the above-mentioned energy storage assist device, and also including a column, a drive shaft and a photovoltaic panel;

[0025] The fixed end of the drive shaft is fixedly connected to the column, the output end is fixedly connected to the photovoltaic panel, and the other end of the circular chain is fixedly connected to the output end of the drive shaft.

[0026] The energy storage assist device is connected to the drive shaft and is used to provide auxiliary torque to drive the photovoltaic panel to rotate around the drive shaft.

[0027] The beneficial effects of this utility model are as follows:

[0028] 1. In existing energy storage assist devices, steel wire ropes are typically used to connect the output wheel to external application components. Because the axis of the guide wheel is not parallel to the rotation axis of the cam assembly, the input and output ends of the steel wire rope experience non-collinear forces during operation, resulting in additional torsional stress within the rope. Since the steel wire rope is composed of multiple strands of steel wire spirally wound, its structure is prone to relative sliding and shear deformation between the wires when subjected to torsional loads. Over long-term operation, this can lead to localized stress concentration, ultimately causing fatigue fracture of the steel wires and affecting the reliability and service life of the transmission system.

[0029] In contrast, when using a circular link chain instead of a wire rope, the circular link chain, composed of multiple links, can flexibly deflect within a wide range of angles without significantly reducing its fatigue strength. This structural characteristic allows the circular link chain to maintain stable mechanical properties even in non-collinear transmission paths, effectively avoiding the risk of fracture due to torsional stress.

[0030] Therefore, the use of circular chain not only increases the freedom of transmission path layout, but also significantly enhances the operational stability and long-term reliability of energy storage and assist devices under complex working conditions, making it particularly suitable for applications with high requirements for transmission safety, such as photovoltaic tracking systems and radar pitch mechanisms.

[0031] 2. When the axis of the guide wheel is perpendicular to the rotation axis of the cam assembly, the transmission path of the circular chain (hanging chain) extends from the output wheel to the guide wheel, forming a nearly orthogonal force transmission path in space. At this time, adjacent links of the circular chain achieve bending in different directions through their own annular interlocking structure, maintaining stable torque transmission at vertical turning angles without stress concentration or energy loss due to sudden changes in direction. Specifically, this angle offers the following advantages:

[0032] Improved adaptability of the force transmission path: The axis of the guide wheel is perpendicular to the rotation axis of the cam assembly, and the interlocking structure of the circular chain links ensures continuous force application even during multi-directional bending. When the output wheel is perpendicular to the axis of the guide wheel, the circular chain automatically adjusts its path through axial nesting between the links, achieving vertical steering without the need for additional guiding devices, thus simplifying the structural design.

[0033] Enhanced structural reliability: Under conditions of external environmental disturbance (such as the influence of wind and other natural conditions on photovoltaic tracking systems), the interlocking structure between the links of the circular chain can absorb vibrations and shocks caused by sudden changes in the path, significantly improving the system's anti-disturbance capability and long-term operational stability.

[0034] 3. When the energy storage and assist device is in the energy release state, the cam group releases the elastic force stored in the first elastic element, and the output wheel can guide the third traction element to output elastic potential energy outward, thus optimizing the output path of the energy storage and assist device.

[0035] 4. The one-piece molded first and second cams improve the integration of the energy storage and assist device, reduce the number of individual components, and optimize the overall structure of the energy storage and assist device.

[0036] 5. The first elastic element is a helical spring, and a spring sleeve is installed on the outside of the helical spring to protect the critical spring part in the energy storage and assist device, preventing it from being damaged or interfered with, and improving system stability. Furthermore, the helical spring is installed in a compressed manner inside the spring sleeve, which reduces the movement space required by the spring compared to a tension spring, thereby improving the integration and space utilization of the energy storage and assist device.

[0037] 6. Typically, the circumference of the output wheel or guide wheel is circular. Since a circular chain consists of multiple links with a fixed pitch, there are significant gaps at the contact points when the chain mates with the output wheel or guide wheel. This can cause the chain to bounce or wear under dynamic tension, especially in high-load conditions such as energy storage booster devices, where the chain is subjected to considerable tension. These gaps can trigger impact loads between the links, significantly increasing the risk of chain breakage. Therefore, by designing the circumferential profile of the output wheel or guide wheel that mates with the circular chain as a polygon, a relatively tight fit can be achieved, reducing the risk of chain breakage and improving the overall strength and operational stability of the transmission system. This improves overall strength and stability without increasing manufacturing complexity. Attached Figure Description

[0038] Figure 1 This is an isometric view of the energy storage assist device in this embodiment.

[0039] Figure 2 This is a top view of the energy storage and assist device in this embodiment, with the top cover and part of the spring sleeve hidden.

[0040] Figure 3 This is an axonometric view of the energy storage and assist device in this embodiment, with the top and side covers hidden.

[0041] Figure 4 for Figure 3 A magnified view of the area where A is divided.

[0042] Figure 5 This is an isometric schematic diagram of the cam assembly.

[0043] Figure 6 for Figure 5 A schematic diagram of the rear view.

[0044] Figure 7 This is a schematic diagram of the photovoltaic device in this embodiment.

[0045] in:

[0046] 1. Energy storage assist device;

[0047] 11. Base;

[0048] 12. Cam assembly; 121. First cam; 122. Second cam; 123. Output wheel;

[0049] 13. Circular link chain; 131. First link; 132. Second link;

[0050] 141. First elastic element; 142. Second elastic element;

[0051] 15. Guide wheel;

[0052] 16. Spring sleeve;

[0053] 17. Outer shell; 171. Top cover; 172. Side cover;

[0054] 2. Transmission components; 3. Photovoltaic panels; 4. Support columns. Detailed Implementation

[0055] The present invention will be further described in detail below with reference to the accompanying drawings.

[0056] As the first aspect of this specific embodiment, such as Figures 1 to 6As shown, an energy storage and assist device 1 is proposed, comprising a base 11, a cam assembly 12, a first traction member, a first elastic member 141, a guide wheel 15, and a circular chain 13. The cam assembly 12 is rotatably mounted on the base 11. The cam assembly 12 includes a first cam 121 and an output wheel 123 fixedly connected. The first cam 121 and the output wheel 123 are arranged sequentially along the rotation axis of the cam assembly 12. One end of the first traction member is fixedly connected to the first cam 121. The other end of the first traction member is fixedly connected to the first elastic member 141. The guide wheel 15 is fixedly mounted on the base 11, and the axis of the guide wheel 15 is not parallel to the rotation axis of the cam assembly 12. One end of the circular chain 13 is fixedly connected to the output wheel 123, and the other end is fixedly connected to an external component through the guidance of the guide wheel 15. The energy storage and assist device 1 has an energy storage state. In the energy storage state, the circular chain 13 is driven by an external force to rotate the cam assembly 12, and the first cam 121 wraps around the first traction member, causing the first elastic member 141 to deform.

[0057] The functions of the external application components are: to dissipate the elastic force stored in the energy storage assist device 1, or to provide the force for the rotation of the cam assembly 12 so that the energy storage assist device 1 stores elastic force. If a steel wire rope is used as the traction component connecting the output wheel 123 and the external application components, since the axis of the guide wheel 15 is not parallel to the rotation axis of the cam assembly 12, the input and output ends of the steel wire rope are not collinear during the movement, forming a deflection path, which generates additional torsional stress inside the steel wire rope. Since the steel wire rope is made of multiple strands of steel wire spirally wound, its structure is prone to relative sliding and shear deformation between the steel wires when subjected to torsional loads. Under long-term operation, this will cause local stress concentration, which will lead to fatigue fracture of the steel wires, affecting the reliability and service life of the transmission system.

[0058] In comparison, such as Figure 4 As shown, when a circular link chain 13 is used to replace the wire rope, the circular link chain 13, composed of multiple links, allows for flexible deflection within a large angle range between adjacent links, such as the first link 131 and the second link 132. This provides strong adaptability without significantly reducing its fatigue strength. This structural characteristic enables the circular link chain 13 to maintain stable mechanical properties even in non-collinear transmission paths, effectively avoiding the risk of fracture due to torsional stress.

[0059] Therefore, the selection of the circular chain 13 not only improves the freedom of the transmission path layout, but also significantly enhances the operational stability and long-term reliability of the energy storage and assist device 1 under complex working conditions, making it particularly suitable for applications with high requirements for transmission safety, such as photovoltaic tracking systems and radar pitch mechanisms.

[0060] In some embodiments, the axis of the guide wheel 15 is perpendicular to the axis of rotation of the cam assembly 12.

[0061] When the axis of the guide wheel 15 is perpendicular to the rotation axis of the cam assembly 12 (e.g., orthogonal arrangement), the transmission path of the circular chain 13 (suspending chain) extends from the output wheel 123 to the guide wheel 15, forming a nearly orthogonal force transmission path in space. At this time, adjacent links of the circular chain 13 achieve bending in different directions through their own annular interlocking structure, maintaining stable torque transmission at vertical turning angles without stress concentration or energy loss due to sudden changes in direction. Specifically, this angle offers the following advantages:

[0062] Achieving vertical force transmission: Traditional flexible traction components (such as steel wire ropes) are prone to fatigue fracture due to torsional stress when arranged on the vertical axis. However, the hanging chain / circular chain 13 can achieve stable force transmission without pin hinges through the flexible sleeve structure of the ring chain links. It is especially suitable for scenarios in photovoltaic tracking systems where the drive shaft and the assist device need to be orthogonally connected.

[0063] Improved adaptability of force transmission path: The link nesting structure of the circular chain 13 enables it to maintain continuous force during multi-directional bending. When the output wheel 123 is perpendicular to the axis of the guide wheel 15, the circular chain 13 automatically adjusts its path through the axial nesting between the links, completing vertical turning without the need for additional guiding devices, thus simplifying the structural design.

[0064] Enhanced structural reliability: Under conditions of external environmental interference (such as the photovoltaic tracking system being affected by natural conditions such as wind), the inter-link interlocking structure of the circular chain 13 can absorb vibrations and shocks caused by sudden changes in the path, significantly improving the system's anti-disturbance capability and long-term operational stability.

[0065] In such Figure 5 In some embodiments shown, the cam assembly 12 further includes a second cam 122 disposed between the first cam 121 and the output wheel 123.

[0066] In some embodiments, the first cam 121, the second cam 122, and the output wheel 123 are integrally formed. The integrally formed first cam 121 and second cam 122 improve the integration of the energy storage assist device 1, reduce the number of individual components, and optimize the overall structure of the energy storage assist device 1.

[0067] In some embodiments, a second traction member and a second elastic member 142 are also provided symmetrically with respect to the first traction member and the first elastic member 141.

[0068] In some embodiments, the first traction element and / or the second traction element is a plate chain. The plate chain is composed of metal plates hinged to pins, possessing high tensile strength and good bending resistance. Its plate structure can withstand large-angle deflections and is not prone to torsional fatigue fracture; it has good wear resistance, long service life, and low maintenance costs. In the energy storage assist device 1, the plate chain, as the first traction element (second traction element), can effectively replace the wire rope. Its hinged structure adapts to non-collinear transmission paths, ensuring smooth force transmission even when the guide wheel 15 is perpendicular to the axis of the cam group 12, avoiding torsional fracture. Compared to wire rope, the plate chain has higher transmission efficiency, stronger fatigue resistance, and stable operation in high-frequency energy storage-release cycles, significantly improving the reliability and service life of the device.

[0069] To improve transmission efficiency, the circumferential profiles of the first cam 121 and the second cam 122 that engage with the plate chain are designed as polygonal structures. These polygonal profiles form intermittent meshing transmissions with the links of the plate chain, effectively avoiding energy loss caused by sliding friction between the traditional circular cam and the chain. In other embodiments, the circumferential profiles of the first cam 121 and the second cam 122 that engage with the plate chain are designed as chain teeth, and the chains of the first and second traction members are roller chains, which also improves transmission stability.

[0070] In some embodiments, the first elastic element 141 is a helical spring, and the energy storage and assist device 1 further includes a spring sleeve 16 for accommodating the first elastic element 141; a pusher is provided at the end of the spring sleeve 16 away from the first cam 121, and the first traction element is fixedly connected to the first elastic element 141 through the pusher.

[0071] In some embodiments, when the first traction member is subjected to force, it drives the pusher member to move along the extension and retraction direction of the helical spring to compress the helical spring.

[0072] The first elastic element 141 is a helical spring, and a spring sleeve 16 is provided on the outside of the helical spring to protect the critical spring part in the energy storage and assist device 1, prevent it from being damaged or interfered with, and improve the stability of the system. Furthermore, the helical spring is arranged in a compressed manner inside the spring sleeve 16, which reduces the movement space required by the spring compared to a tension spring, and improves the integration and space utilization of the energy storage and assist device 1.

[0073] In such Figure 1 and Figure 2In the illustrated embodiments, to protect the internal structure of the energy storage assist device 1 from external environmental influences (such as dust, moisture, mechanical impact, etc.), the energy storage assist device 1 also includes a housing 17. The housing 17 consists of an upper cover 171 and a side cover 172, which, while cooperating with the base 11 to provide rotational support for the cam assembly 12, also provides partial protection for the interior of the energy storage assist device 1. Furthermore, in some embodiments, the housing 17 also includes a lower cover. The combination of the upper cover 171, the side cover 172, and the lower cover forms a fully enclosed protective structure for the energy storage assist device 1, effectively improving the device's sealing performance and environmental adaptability, and is particularly suitable for complex working conditions such as outdoor photovoltaic tracking systems.

[0074] In some embodiments, the circumferential profile of the output wheel 123 that mates with the circular chain 13 is polygonal, and / or the circumferential profile of the guide wheel that mates with the circular chain 13 is polygonal. Typically, the circumferential surface of the output wheel 123 or guide wheel is circular. Since the circular chain 13 is composed of multiple links with a fixed pitch, there will be a large gap at the contact points when the circular chain 13 mates with the output wheel 123 or guide wheel. This causes the circular chain 13 to bounce or wear under dynamic tension, especially in high-load conditions such as the energy storage assist device 1, where the circular chain 13 is subjected to significant tension. This gap can trigger impact loads between the links, significantly increasing the risk of chain breakage. Therefore, by setting the circumferential profile of the output wheel 123 or guide wheel that mates with the circular chain 13 to a polygonal shape, the circular chain 13 and the output wheel 123 or guide wheel can achieve a relatively tight fit, thereby reducing the risk of chain breakage and improving the overall strength and operational stability of the transmission system. While avoiding increased manufacturing complexity, the overall strength and stability were improved.

[0075] As a second aspect of this specific embodiment, such as Figure 7 As shown, a photovoltaic device is proposed, including the aforementioned energy storage assist device 1, and also including a column 4, a drive shaft, and a photovoltaic panel 3; the fixed end of the drive shaft is fixedly connected to the column 4, and the output end of the drive shaft is fixedly connected to the photovoltaic panel 3; the energy storage assist device 1 is drivenly connected to the drive shaft to provide auxiliary torque to drive the photovoltaic panel 3 to rotate around the drive shaft.

[0076] In some embodiments of photovoltaic equipment, the output end of the drive shaft corresponds to the aforementioned external application component, and the other end of the circular chain 13 is fixedly connected to the output end of the drive shaft. Furthermore, the energy storage assist device 1 is located near the drive shaft. This layout design effectively shortens the power transmission path, reduces energy loss during transmission, and thus improves the overall transmission efficiency and response speed of the equipment.

[0077] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0078] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0079] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "provided with" and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0080] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the present utility model patent should be included in the scope of the present utility model.

Claims

1. An energy storage and booster device, characterized in that, include: Base; A cam assembly is rotatably mounted on the base. The cam assembly includes a first cam and an output wheel that are fixedly connected. The first cam and the output wheel are arranged sequentially along the rotation axis of the cam assembly. The first traction component has one end fixedly connected to the first cam; The first elastic element, and the other end of the first traction element is fixedly connected to the first elastic element; A guide wheel is fixedly mounted on the base, and the axis of the guide wheel is not parallel to the rotation axis of the cam assembly. The circular chain has one end fixedly connected to the output wheel, and the other end fixedly connected to an external component after being guided by the guide wheel; The energy storage assist device has an energy storage state. In the energy storage state, the circular chain is driven by an external force to rotate the cam group. The first cam wraps around the first traction member, causing the first elastic member to deform.

2. The energy storage and assist device as described in claim 1, characterized in that: The axis of the guide wheel is perpendicular to the rotation axis of the cam assembly.

3. The energy storage and assist device as described in claim 1, characterized in that: The cam assembly further includes a second cam, which is disposed between the first cam and the output wheel.

4. The energy storage and assist device as described in claim 3, characterized in that: The first cam, the second cam, and the output wheel are integrally formed.

5. The energy storage and assist device as described in claim 4, characterized in that: It also includes a second traction member and a second elastic member that are symmetrically arranged with respect to the first traction member and the first elastic member.

6. The energy storage and assist device as described in claim 5, characterized in that: The first traction member and / or the second traction member are plate chains.

7. The energy storage and assist device as described in claim 1, characterized in that: The first elastic element is a helical spring, and the energy storage and assist device further includes a spring sleeve, which is used to accommodate the first elastic element; The spring sleeve has a pusher at one end away from the first cam, and the first traction member is fixedly connected to the first elastic member through the pusher.

8. The energy storage and assist device as described in claim 7, characterized in that, When the first traction member is subjected to force, it drives the pushing member to move along the extension and retraction direction of the helical spring to compress the helical spring.

9. The energy storage and assist device as described in claim 1, characterized in that, The circumferential contour of the output wheel that mates with the circular chain is a polygon, and / or the circumferential contour of the guide wheel that mates with the circular chain is a polygon.

10. A photovoltaic device, characterized in that, The device includes the energy storage and assist device as described in any one of claims 1 to 9, and further includes a column, a drive shaft, and a photovoltaic panel; The fixed end of the drive shaft is fixedly connected to the column, the output end of the drive shaft is fixedly connected to the photovoltaic panel, and the other end of the circular chain is fixedly connected to the output end of the drive shaft. The energy storage assist device is connected to the drive shaft and is used to provide auxiliary torque to drive the photovoltaic panel to rotate around the drive shaft.

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