阅读说明：本技术 一种空间太阳能电站电池板结构 (Space solar power station panel structure ) 是由 魏乙 孔繁之 邵珠艳 张兴秋 古鲁峰 于 2019-09-10 设计创作，主要内容包括：本发明公开了一种空间太阳能电站电池板结构,其包括能够展开的太阳能电池板组件,太阳能电池板组件至少包括电路连接并可沿转动轴线(3)折叠的第一电池板(1)和第二电池板(2),第一电池板(1)边缘处固定有中心块(11),在第二电池板(2)边缘处安装具有两个侧块(22)的底板(21),两个侧块(22)置于中心块(11)的两侧并与枢轴(23)共同形成铰接结构,底座上设有通孔,紧固螺栓(4)穿过通孔将底座固定在第二电池板(2)的边缘处,由于两块相邻的电池板通过铰接结构连接,一块电池板大部的应力和热变形并不会对相邻的电池板传递,因此很好的解决了热震变形的问题。(The invention discloses a space solar power station panel structure, which comprises a solar panel assembly capable of being unfolded, wherein the solar panel assembly at least comprises a first panel (1) and a second panel (2) which are connected by a circuit and can be folded along a rotating axis (3), a central block (11) is fixed at the edge of the first panel (1), a bottom plate (21) with two side blocks (22) is arranged at the edge of the second battery board (2), the two side blocks (22) are arranged at two sides of the central block (11) and form a hinge structure together with a pivot (23), a through hole is arranged on the base, a fastening bolt (4) penetrates through the through hole to fix the base at the edge of the second battery board (2), because two adjacent battery boards are connected through the hinge structure, the stress and the thermal deformation of the large part of one battery board can not be transferred to the adjacent battery boards, so that the problem of thermal shock deformation is well solved.)

1. The utility model provides a space solar power station panel structure, it is including the solar panel subassembly that can expand, the solar panel subassembly includes circuit connection at least and can follow rotation axis (3) folding first panel (1) and second panel (2), a serial communication port, first panel (1) edge is fixed with center block (11), bottom plate (21) that have two side pieces (22) are installed to edge in second panel (2), the both sides of center block (11) are arranged in to two side pieces (22) and form hinge structure jointly with pivot (23), be equipped with the through-hole on the base, fastening bolt (4) pass the through-hole and fix the edge at second panel (2) with the base.

2. A space solar power station panel structure according to claim 1, characterised in that: the fastening bolt (4) comprises a head part (41) and a screw rod (42), a sinking groove is formed in the center of one side of the head part (41), the screw rod (42) is arranged on the other side of the head part, and a flange (43) is arranged on the head part (41) in the circumferential direction and close to the screw rod (42); the elastic buckle (44) and the elastic washer (46) are sequentially sleeved on the screw rod (42), and the elastic washer is a flat elastic body; when the fastening bolt (4) is in a normal working state, the lower surface of the flange (43) presses the elastic buckle (44) to the mounting surface, and when the fastening bolt (4) fails or is abnormal, the elastic buckle (44) deforms and pushes the fastening bolt (4) to a direction away from the mounting surface.

3. The space solar power station of claim 2 characterized in that: the elastic buckle (44) comprises a flat area (443) and bent arms (442) which are radially and uniformly distributed on the outer side of the flat area (443), when the pressing force on the flat area (443) is insufficient, the bent arms (442) bend towards the bottom side of the elastic buckle (44), the free ends of the bent arms (442) release the upper surface of the flange (43), and the head is pushed to the direction away from the mounting surface under the action of the arc-shaped outer surface of the bent arms (442); when the upper surface of the elastic buckle (44) is subjected to enough pressure, the bent arms (442) and the flat areas (443) are deformed into smooth transition, and the free ends of the bent arms (442) are folded upwards and inwards and can press the upper surface of the flange (43).

4. A space solar power station panel structure according to claim 3, characterised in that: the lower surface of the elastic buckle (44) is also provided with a pressing stop ring (441) close to the central screw hole, the elastic gasket (46) is sleeved on the tapered section of the root of the screw in an interference fit mode, and when the elastic gasket (46) is pressed by the elastic buckle flat area (443), the pressing stop ring (441) can be matched with the mounting surface to enable the elastic gasket (46) to deform in the corresponding area.

5. A space solar power station panel structure according to claim 4, characterised in that: the diameter of the press-stopping ring (441) is smaller than the inner diameter of the through hole (211), a partial area of the elastic gasket (46) is clamped by the press-stopping ring (441) and the inner wall of the through hole (211), and the inner ring of the elastic gasket (46) is in interference fit with the conical section of the root of the screw rod.

6. A space solar power station panel structure according to claim 2, characterised in that: the sinking groove (45) comprises an inner cross groove (451) at the center and a positioning groove (452) communicated with the outer side of the inner cross groove, the positioning groove comprises a guide inclined surface (453) inclining inwards and downwards, and the guide inclined surface (453) is connected with the inner cross groove (451) at the bottom through an inclined bottom (454) inclining inwards and upwards.

7. A space solar power station panel structure according to claim 1, characterised in that: a gasket (26) is arranged between the central block (11) and the side block (22), and clamping springs (24) for preventing the central block from being separated from the holes are arranged on two sides of the pivot (23).

8. A space solar power station panel structure according to claim 3, characterised in that: the upper surface of the flange is provided with an anti-rotation block, the anti-rotation block is positioned between two adjacent bent arms (442), and when the fastening bolt is subjected to a pretightening force to reach a threshold value, the free ends of the bent arms are inwards buckled on the upper surface of the flange and are limited by the anti-rotation block.

Technical Field

The invention relates to a space solar power station, in particular to a fastening device which can timely warn excessive deformation according to temperature difference deformation of a cell panel structure of the space solar power station.

Background

With the continuous development of global economy, energy and environmental problems have become two most attractive problems nowadays. Since the first assumption of building space solar power stations was made by GLASER in 1968, space solar power stations have attracted the attention of many countries and scientific research institutions. More than 20 concepts are successively proposed in the United states, the Japan, the Europe and the like, and a series of exploratory research works are carried out. The space solar power station is in a space environment, and when the space solar power station runs on a synchronous orbit of the earth, disturbance of a plurality of external factors, particularly thermal radiation influence generated by sunlight, can occur. Because the power station system has huge structure, and the structure has the characteristics of low rigidity, small damping and the like, any external interference can have important influence on the system. Because the tethered space solar power station is an ultra-large flexible space structure, the structural vibration of the tethered space solar power station can easily affect the accuracy of energy transmission to a designated ground receiving station, and specifically, the inventor reports 'tethered space solar power station dynamic response analysis, Weiyi and the like, astronavigation science report, volume 37, phase 9, and 2016, month 9'.

The inventor also finds that the space solar power station system absorbs light energy and converts a part of the energy into electric energy in the operation process, the electric energy is transmitted to the earth through the WPT technology, and the other part of the energy is converted into heat energy. Because the absorption rate and the refractive index of the upper surface and the lower surface of the battery panel are different, the upper surface and the lower surface of the battery panel have certain temperature difference and frequently enter and exit the sunshine area and the shadow area, the battery panel generates time-varying temperature difference under the action of sudden heating flow, and even can generate thermal vibration under the action of time-varying temperature gradient, so that the corresponding fastening structure can deform and even break. If the situation that the fastener breaks occurs in space, the corresponding failure defect is difficult to find through visual inspection, and how to effectively prevent the potential safety hazard caused by various structural deformations of the space solar power station due to temperature difference is a problem which is expected to be solved in the field for a long time, particularly the prevention and monitoring of the undesirable vibration of the panel assembly is a problem which is expected to be solved in the field for a long time.

Disclosure of Invention

The invention aims to solve the technical problem of providing a device which can better fasten the structure of a solar panel of a space solar power station and provide warning when the structure deformation is overlarge.

Compared with the prior art, the invention has the following advantages:

the utility model provides a space solar power station panel structure, it is including the solar panel subassembly that can expand, the solar panel subassembly includes circuit connection at least and can follow the first panel and the second panel that the axis of rotation is folding, a serial communication port, first panel edge is fixed with the center block, the bottom plate that has two side pieces is installed in second panel edge, the both sides of center block are arranged in to two side pieces and form hinge structure jointly with the pivot, be equipped with the through-hole on the base, fastening bolt passes the through-hole and fixes the edge at the second panel with the base. Space solar power station structure can be frequent in the cold and hot environment of alternating that stands of rail operation period, and high low temperature violent change can appear on the solar cell panel upper and lower surface, and this kind of temperature variation not only can arouse solar panel and corresponding hinge structure to take place the heat altered shape, nevertheless because two adjacent panels pass through hinge structure and connect, the stress and the heat altered shape of a panel major part can not be to adjacent panel transmission, consequently fine solution the problem of thermal vibration deformation.

The important invention conception of the invention is to provide a fastening structure of a solar panel suitable for a space solar power station, which is used for preventing looseness and early warning in abnormal work, particularly, a fastening bolt comprises a head and a screw rod, a sunken groove is arranged at the center of one side of the head, the screw rod is arranged at the other side of the head, and a flange is arranged on the head in the circumferential direction and close to the screw rod; the elastic buckle and the elastic washer are sequentially sleeved on the screw rod; when the fastening bolt works normally, the lower surface of the flange presses the elastic buckle to the mounting surface, and when the fastening bolt fails or is abnormal, the elastic buckle deforms and pushes the fastening bolt to the direction away from the mounting surface. The elastic buckle comprises a leveling area and bent arms which are radially and uniformly distributed on the outer side of the leveling area, when the pressing force on the leveling area is insufficient, the bent arms bend towards the bottom side of the elastic buckle, the free ends of the bent arms release the upper surface of the flange, and the head parts are pushed to the direction far away from the installation surface under the action of the arc-shaped outer surfaces of the bent arms; when the upper surface of the elastic buckle is subjected to enough pressure, the bent arm and the leveling area are deformed into smooth transition, and the free end of the bent arm is folded upwards and inwards and can press the upper surface of the flange. Since the spring washer is flat in any case, the spring clip is located on the spring washer, which in normal operation can clip the bolt head in the direction of the thread along the bolt axis, and since it is a flat elastomer, it remains rigid in the direction of the applied force against deflection along the bolt axis.

Moreover, if the fastening bolt is not enough in fastening force due to the thermal deformation of the screw hole or the bolt itself, or more seriously, the screw rod is broken due to the shear stress, the bent arm is bent toward the bottom side of the elastic buckle and pushes the head of the bolt in a direction away from the mounting surface, and the bent arm also blooms like a flower, so that the fastening force is obviously different from the fastening force in other normal working states, thereby giving a warning. Thus, it is possible to visually find the screw having an abnormal operation, perform replacement or maintenance, and thus eliminate an undesirable vibration abnormality of the battery board assembly.

The lower surface of the elastic buckle is also provided with a pressing stop ring close to the central screw hole, the elastic washer is sleeved on the tapered section at the root of the screw in an interference fit manner, and when the elastic washer is compressed in the elastic buckle leveling area, the pressing stop ring can be matched with the mounting surface to enable the elastic washer to deform in a corresponding area. The larger the deformation is, the larger the friction force between the elastic cushion and the mounting surface is, and the elastic washer cannot displace relative to the mounting surface along the surface due to the action of the press stop ring, so that under the action of interference fit, the elastic washer can always maintain the radial supporting action on the bolt and can buffer the vibration to which the bolt is subjected.

The diameter of the press stop ring is smaller than the inner diameter of the through hole, part of the area of the elastic gasket is clamped by the press stop ring and the inner wall of the through hole, and the inner ring of the elastic gasket is in interference fit with the conical section of the root of the screw rod. The diameter of the press-stopping ring is smaller than the inner diameter of the through hole, namely, under the normal working state, at least part of the press-stopping ring can enter the through hole and below the mounting surface, at least part of area of the elastic gasket is clamped by the press-stopping ring and the inner wall of the through hole, and the inner ring of the elastic gasket is in interference fit with the conical section of the root of the screw rod. In this case, not only the press-stop ring can prevent the non-mounting axis of the bolt from shifting, but also the inner wall of the through hole can participate in the effect of preventing the non-mounting axis of the bolt from shifting, thereby further improving the effects of support and vibration reduction.

The sinking groove comprises an inner cross groove at the center and a positioning groove communicated with the outer side of the inner cross groove, the positioning groove comprises a guide inclined plane which inclines inwards and downwards, and the bottom of the guide inclined plane is connected with the inner cross groove through an inclined bottom which inclines inwards and upwards.

A gasket is arranged between the central block and the side block, and snap springs for preventing the central block and the side block from falling out of the hole are arranged on two sides of the pivot.

Drawings

FIG. 1 is a schematic view of a partial structure of a panel assembly of a space solar power station according to the present invention;

FIG. 2 is a schematic view of a hinge structure of the panel assembly of the present invention;

FIG. 3 is a first structural schematic view of the fastening bolt of the present invention;

FIG. 4 is a second structural view of the fastening bolt of the present invention;

fig. 5 is a plan view of the fastening bolt of the present invention in a compressed state.

Description of reference numerals:

the battery pack comprises a first battery board 1, a center block 11, a second battery board 2, a bottom board 21, a through hole 211, a side block 22, a pivot 23, a clamp spring 24, a limiting block 25, a gasket 26, a rotating axis 3, a fastening bolt 4, a head 41, a screw 42, a flange 43, an elastic buckle 44, a press stop ring 441, a bent arm 442, a flat area 443, a gap 444, a sinking groove 45, an inner cross groove 451, a positioning groove 452, a guide inclined surface 453, an inclined bottom 454 and an elastic washer 46.

Detailed Description

The following description of the embodiments of the present invention refers to the accompanying drawings and examples:

it should be noted that the structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are only for the purpose of understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined by the following claims, and all modifications of the structures, changes in the proportions and adjustments of the sizes and other dimensions which are within the scope of the disclosure should be understood and encompassed by the present disclosure without affecting the efficacy and attainment of the same.

In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.

Space solar power station, it is including the solar panel subassembly that can expand, and the solar panel subassembly includes circuit connection at least and can follow 3 folding first panels 1 and second panels 2 of axis of rotation, and its solar panel subassembly is in fold condition when space solar power station is launched, opens and constantly adjusts the direction at the flight in-process after the satellite and arrow separation, makes solar panel aim at the sun, provides the energy for its work. In this embodiment, a center block 11 is fixed at the edge of a first panel 1, a bottom plate 21 with two side blocks 22 is installed at the edge of a second panel 2, the two side blocks 22 are arranged at two sides of the center block 11 and form a hinge structure together with a pivot 23, a through hole is arranged on the base, and a fastening bolt 4 passes through the through hole to fix the base at the edge of the second panel 2, therefore, in this embodiment, the span-extending mechanism of the solar panel assembly is a hinge-extensible mechanism, the extending process of the hinge-extensible mechanism is realized by hinge activity, the space swept by the mechanism in the extending process is larger than the space finally occupied by the mechanism, the space solar power station structure frequently undergoes a cold and hot alternating environment during the rail operation, the upper and lower surfaces of the solar panel can generate severe changes of high and low temperatures, and the temperature changes can not only cause thermal deformation of the solar panel and the corresponding hinge structure, however, because two adjacent battery boards are connected through the hinge structure, the stress and the thermal deformation of the large part of one battery board can not be transferred to the adjacent battery boards, so that the problem of thermal vibration deformation is well solved.

In order to cope with the deformation of the hinge structure, the present embodiment employs the fastening bolt 4, which includes a head 41 and a screw rod 42, wherein a sunken groove is arranged at the center of one side of the head 41, the screw rod 42 is arranged at the other side, external threads processed according to requirements are arranged outside the screw rod 42, which are conventional structures of bolts, and a flange 43 is arranged on the head 41 in the circumferential direction and close to the screw rod 42; an elastic buckle 44 and an elastic washer 46 are sequentially sleeved on the screw rod 42; in the working state, the lower surface of the flange of the head 41 is pressed against the elastic buckle 44 and the elastic washer 46 in sequence to act on the mounting surface to fasten the first component and the second component, the lower surface of the flange 43 presses the elastic buckle 44 against the mounting surface when the fastening bolt 4 is in the normal working state, and the elastic buckle 44 deforms to push the fastening bolt 4 away from the mounting surface when the fastening bolt 4 fails or is abnormal. In the prior art, the bolt and the spring washer are usually adopted for fastening, but the spring washer cannot apply force to the bolt in the direction of the thread at first and only has the function of pre-tightening and anti-loosening. In this embodiment the spring washer 46 is in any case flat, and the spring snap 44 is located on the spring washer, which in normal operation can snap the bolt head in the direction of the bolt axis, wherein the spring washer 46 functions like a spring washer of the prior art as a lock and pretension, but because it is a flat elastomer, it is held rigidly against deflection along the bolt axis in the direction of the applied force.

In a preferred embodiment, the elastic buckle 44 includes a flat region 443 and radially and uniformly distributed curved arms 442 outside the flat region 443, when the flat region 443 is under pressure, the curved arms 442 bend toward the bottom side of the elastic buckle 44, the free ends of the curved arms 442 release the upper surface of the flange 43, and the head is pushed away from the mounting surface by the action of the arc-shaped outer surfaces of the curved arms 442; when the upper surface of the elastic buckle 44 is sufficiently pressed, the curved arms 442 and the flat portions 443 are deformed to be smoothly transited, and the free ends of the curved arms 442 are folded upward and inward and can press the upper surface of the flange 43. The elastic buckle 44 is very important in this embodiment, considering that in space, there are more bolts used for the solar panel assembly, and in addition, the anti-loose detection at any time cannot be performed as in ordinary times, when the working state detection of the solar panel assembly bolt is performed, it needs to be performed in a simple and clear manner, in this embodiment, if the fastening bolt is insufficient in fastening force due to the thermal deformation of the screw hole or the bolt itself, or the screw is broken due to shear stress, the bent arm 442 bends toward the bottom side of the elastic buckle 44 and pushes the bolt head to the direction away from the mounting surface, and the bent arm also dissociates like a flower, and a visual difference occurs with the fastening in other normal working states, thereby giving a warning.

For the fastening bolt in the normal working state, it is more beneficial to perform the function of vibration resistance and buffering while fastening, and therefore, preferably, a press stop ring 441 is further disposed on the lower surface of the elastic buckle 44 near the central screw hole, the press stop ring 441 may be integrally formed on the elastic buckle 44, the elastic washer 46 is sleeved on the tapered section of the root of the screw in an interference fit manner, when the elastic washer 46 is pressed by the flat region 443 of the elastic buckle 44, the press stop ring 441 can cooperate with the mounting surface to cause the elastic washer 46 to deform more in the corresponding region, at this time, due to the function of the press stop ring 441, the elastic washer 46 does not displace relative to the mounting surface in a moving manner, so that, under the interference fit effect, the elastic washer 46 can always maintain the radial supporting effect on the bolt, and can buffer the vibration to which the bolt is subjected.

One possible preferred solution is that the diameter of the press-stopping ring 441 is smaller than the inner diameter of the through hole 211, i.e. under normal operation, the press-stopping ring 441 will enter the through hole 211 at least partially and under the mounting surface, at least a partial region of the elastic washer 46 is clamped by the outer side surface of the press-stopping ring 441 and the inner wall of the through hole 211, and the inner ring of the elastic washer 46 is in interference fit with the tapered section of the screw root. In this case, not only the press-stop ring 441 can prevent the non-mounting axis of the bolt from being displaced, but also the inner wall of the through hole 211 can contribute to the effect of preventing the non-mounting axis of the bolt from being displaced, thereby further improving the effect of supporting and damping vibration.

Preferably, the sinking groove 45 comprises a central inner cross groove 451 and a positioning groove 452 communicated with the outer side of the inner cross groove 451, the positioning groove 452 comprises a guide inclined surface 453 inclined inwards and downwards, the guide inclined surface 453 is connected with the inner cross groove 451 through an inclined bottom 454 inclined inwards and upwards at the bottom, a maintenance worker drives the rotation of the bolt by using a driving head which is in a shape corresponding to the bottom of the sinking groove, the driving head is in a straight cylindrical shape in the circumferential direction and is in clearance fit with the guide inclined surface 453; due to the positioning groove, the driving head can be guided firstly when entering the sinking groove and then positioned by the included angle area of the guide inclined surface 453 and the inclined bottom 454, so that the driving head in the prior art is prevented from deviating and falling out relative to the sinking groove easily.

In a preferred embodiment, an anti-rotation block is disposed on the upper surface of the flange, and the anti-rotation block is located between two adjacent curved arms 442, for example, at the gap 444.

Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.