CN218207446U - Universal corner connector of battery assembly, battery assembly and photovoltaic system - Google Patents

Abstract

The application is suitable for the technical field of solar cells, and provides a universal corner connector of a battery assembly, the battery assembly and a photovoltaic system. The universal angle code of the battery assembly comprises a first angle code sheet, a second angle code sheet and a rotating shaft, wherein the frame of the battery assembly comprises a first frame and a second frame which are adjacent to each other, the first frame and the second frame form a frame included angle, the first angle code sheet and the second angle code sheet are used for being respectively inserted into the first frame and the second frame, the rotating shaft rotates to adapt to the frame included angle, and the first frame and the second frame are in butt joint. So, because first corner piece and second corner piece can revolute the rotation of axes, so can adapt to the frame contained angle of various angles, the first frame and the second frame of various angles of butt joint are favorable to reducing the assembly degree of difficulty of angle sign indicating number and frame, improve the efficiency of battery pack assembly and preparation.

Description

Universal corner connector of battery pack, battery pack and photovoltaic system

Technical Field

The application belongs to the technical field of solar cells, and particularly relates to a universal corner connector of a battery assembly, the battery assembly and a photovoltaic system.

Background

Solar cell power generation is a sustainable clean energy source that can convert sunlight into electrical energy using the photovoltaic effect of semiconductor p-n junctions. Solar cells are typically soldered with solder ribbons to form a cell assembly.

In the related art, battery pack is usually rectangular, and the angle sign indicating number is right angle type angle sign indicating number usually, docks two adjacent frames through right angle type angle sign indicating number. However, the corner brace cannot be abutted against the frame of the special-shaped battery pack.

Therefore, how to design the corner connectors to be matched with the special-shaped frame of the battery pack becomes a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The application provides a battery pack's universal angle sign indicating number, battery pack and photovoltaic system aims at solving the problem of how to design the frame of angle sign indicating number with the special-shaped battery pack of adaptation.

First aspect, the universal angle sign indicating number of battery pack that this application provided includes first angle chip, second angle chip and pivot, and battery pack's frame includes adjacent first frame and second frame, first frame with the second frame forms the frame contained angle, first angle chip with second angle chip is used for inserting respectively first frame with the second frame winds the pivot rotates in order to adapt to the frame contained angle, will first frame with the second frame docks.

Optionally, relative to the second angular chip, an end of the first angular chip away from the rotating shaft rotates around the rotating shaft between a first position and a second position; under the condition that one end of the first angle code piece, which is far away from the rotating shaft, is at the first position, the included angle formed by the first angle code piece and the second angle code piece is 20 degrees; under the condition that one end of the first angle code piece, which is far away from the rotating shaft, is located at the second position, an included angle formed by the first angle code piece and the second angle code piece is 180 degrees.

Optionally, a first protrusion is formed on one side of the first corner piece, and the first protrusion contacts an inner wall of the first frame when the first corner piece is inserted into the first frame;

and/or a second protrusion is formed on one side of the second corner code piece, and the second protrusion contacts the inner wall of the second frame under the condition that the second corner code piece is inserted into the second frame.

Optionally, the rotation axis is fixedly connected to one of the first corner piece and the second corner piece, and is movably connected to the other of the first corner piece and the second corner piece.

Optionally, first angle piece is close to the one end of pivot is formed with first connecting hole, second angle piece is close to the one end of pivot is formed with the second connecting hole, the pivot is inserted first connecting hole with the second connecting hole, the pivot with first connecting hole with one interference fit in the second connecting hole, and with first connecting hole with another clearance fit in the second connecting hole.

Optionally, one end of the first corner piece close to the rotating shaft includes a first connection portion and a second connection portion, and the first connection portion and the second connection portion are both formed with the first connection hole; a gap is formed between the first connecting part and the second connecting part in the extending direction of the rotating shaft, the second corner stacking piece comprises a third connecting part with a second connecting hole, and the third connecting part is inserted into the gap; the rotating shaft is inserted into the first connecting hole formed in the first connecting portion, the second connecting hole formed in the third connecting portion and the first connecting hole formed in the second connecting portion in sequence.

Optionally, the rotating shaft includes a first connecting section and a second connecting section, the first connecting section is matched with the first connecting hole, the second connecting section is matched with the second connecting hole, the first connecting hole and the second connecting hole have the same aperture, and the first connecting section and the second connecting section have different diameters.

Optionally, the universal corner connector includes a fixing section, and a fixing member of the battery assembly fixes the frame and the fixing section when the first corner piece and the second corner piece butt the first frame and the second frame.

In a second aspect, the present application provides a battery pack, including a plurality of frames and any one of the above-mentioned universal angle yards, the two adjacent frames of universal angle yard butt joint.

In a third aspect, the present application provides a photovoltaic system including the above-described cell assembly.

The universal angle sign indicating number of battery pack, battery pack and photovoltaic system of this application embodiment because first angle code piece and second angle code piece can revolute the rotation of axes, so can adapt to the frame contained angle of various angles, dock the first frame and the second frame of various angles, are favorable to reducing the assembly degree of difficulty of angle sign indicating number and frame, improve the efficiency of battery pack assembly and preparation.

Drawings

Fig. 1 is a schematic structural view of a universal corner connector of a battery assembly according to an embodiment of the present disclosure;

FIG. 2 is a schematic view illustrating a situation that a universal corner connector of a battery assembly according to an embodiment of the present application is inserted into a frame of the battery assembly;

FIG. 3 is an exploded view of a gimbal corner brace of a battery assembly according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a gimbal bracket of a battery assembly according to an embodiment of the present disclosure;

FIG. 5 is a schematic view illustrating a situation that a universal corner connector of a battery assembly according to an embodiment of the present application is inserted into a frame of the battery assembly;

description of the main element symbols:

the universal corner code comprises a battery assembly 100, a first frame 21, a second frame 22, a universal corner code 10, a first corner piece 11, a first connection hole 110, a first protrusion 111, a first connection part 112, a second connection part 113, a gap 114, a second corner piece 12, a second connection hole 120, a second protrusion 121, a third connection part 122, a rotating shaft 13, a first connection section 131 and a second connection section 132.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In this application, because the first corner piece and the second corner piece of universal corner sign indicating number can revolute the rotation of axes, so can adapt to the frame contained angle of various angles, dock the first frame and the second frame of various angles, be favorable to reducing the assembly degree of difficulty of corner sign indicating number and frame, improve the efficiency of battery pack assembly and preparation.

Example one

Referring to fig. 1, 2, 3, 4 and 5, a universal corner code 10 of a battery assembly 100 according to an embodiment of the present disclosure includes a first corner piece 11, a second corner piece 12 and a rotating shaft 13, a frame of the battery assembly 100 includes a first frame 21 and a second frame 22 adjacent to each other, the first frame 21 and the second frame 22 form a frame included angle, the first corner piece 11 and the second corner piece 12 are respectively inserted into the first frame 21 and the second frame 22, and rotate around the rotating shaft 13 to adapt to the frame included angle, so as to butt the first frame 21 and the second frame 22.

The universal angle sign indicating number 10 of this application embodiment, because first angle code piece 11 and second angle code piece 12 can revolve around pivot 13, so can adapt to the frame contained angle of various angles, dock first frame 21 and the second frame 22 of various angles, be favorable to reducing the assembly degree of difficulty of angle code and frame, improve the efficiency of battery pack 100 assembly and preparation.

It can be understood that like this, the demand of the frame of different angles can be satisfied to a angle sign indicating number, can reduce the processing kind of angle sign indicating number, reduce cost.

Specifically, the first corner piece 11 and the second corner piece 12 may be symmetrical. In this way, the effect of inserting the first corner chip pieces 11 and the second corner chip pieces 12 into the first frame 21 and the second frame 22 is substantially the same, and the first frame 21 and the second frame 22 can be more stably abutted. Moreover, the first corner piece 11 and the second corner piece 12 can be manufactured in batch, and do not need to be distinguished during assembly, so that the production efficiency and the assembly efficiency are improved.

Further, the first and second angle chips 11 and 12 may be symmetrical except for a portion connected to the rotation axis 13. Therefore, the parts of the two angle code pieces connected with the rotating shaft 13 can be adjusted adaptively, and the rest parts of the two angle code pieces can be symmetrical, so that the two frames can be butted more stably.

In other embodiments, the first angular chip 11 and the second angular chip 12 may be asymmetric.

Specifically, the first and second corner pieces 11 and 12 may be formed with through-holes. Therefore, the universal corner brace 10 can be prevented from obstructing the wiring of the battery assembly 100 through the through hole wiring, and the normal work of the battery assembly 100 is ensured. In other embodiments, the first corner piece 11 and the second corner piece 12 may not have through holes formed therein; the first corner piece 11 may be formed with a through hole, and the second corner piece 12 may not be formed with a through hole; the second corner piece 12 may also be formed with a through-hole, and the first corner piece 11 may not be formed with a through-hole.

Specifically, in the extending direction of the first corner piece 11, the first corner piece 11 is gradually narrowed from the center to both ends. In the extending direction of the second angular chip 12, the second angular chip 12 is gradually narrowed from the center to both ends. So for the angle chip is middle broad, and both ends narrow, when through middle part adaptation frame, the one end that is close to pivot 13 is narrower, can be convenient for be connected with pivot 13, be convenient for rotate, reduces the limited risk of angle. And the end far away from the rotating shaft 13 is narrow, so that the frame can be conveniently inserted, and the assembly efficiency is favorably improved.

Specifically, the rotating shaft 13 may have a cylindrical shape. Thus, the rotation is convenient.

Specifically, the rotating shaft 13 may be a latch. Therefore, the method is easy to obtain, and is beneficial to reducing the cost and improving the production efficiency. In other embodiments, the rotation shaft 13 may also be a shaft body integrally formed with the first corner piece 11 or the second corner piece 12.

Referring to fig. 3, when the universal angle code 10 is installed, the first angle code piece 11 and the second angle code piece 12 may be aligned with the matching portion of the rotating shaft 13, and then the rotating shaft 13 may be inserted.

Specifically, in actual use, the first corner piece 11 and the second corner piece 12 may be inserted into the first frame 21 and the second frame 22, respectively; then, the first frame 21 and the second frame 22 are butted to drive the first corner piece 11 and the second corner piece 12 to rotate; after the first frame 21 and the second frame 22 are completely butted, the first corner piece 11 and the second corner piece 12 are fixed and do not rotate around the rotating shaft 13, so that the included angle between the first corner piece 11 and the second corner piece 12 is fixed and can adapt to the included angle of the frames. Thereafter, the frame may be fixed to the universal corner brace 10, such as by riveting, screwing, etc. the frame and the universal corner brace 10.

Specifically, in actual use, the first corner piece 11 and the second corner piece 12 can also be rotated according to the included angle of the frame; after the angle formed by the first corner piece 11 and the second corner piece 12 can be adapted to the included angle of the frame, fixing the first corner piece 11 and the second corner piece 12 without rotating around the rotating shaft 13; finally, the first corner chip 11 and the second corner chip 12 with fixed angles are inserted into the first frame 21 and the second frame 22, respectively. Thereafter, the frame and the universal corner connector 10 can be fixed, for example, rivets, screws, and the like are drilled on the frame and the universal corner connector 10.

Example two

In some alternative embodiments, the end of the first corner piece 11 away from the rotation axis 13 rotates around the rotation axis 13 between the first position and the second position relative to the second corner piece 12; under the condition that one end of the first angle code sheet 11 far away from the rotating shaft 13 is at the first position, the included angle formed by the first angle code sheet 11 and the second angle code sheet 12 is 20 degrees; in the case where the end of the first angular chip piece 11 away from the rotation axis 13 is at the second position, the angle formed by the first angular chip piece 11 and the second angular chip piece 12 is 180 °.

In this way, the included angle between the first corner piece 11 and the second corner piece 12 can be changed within 20-180 degrees, and the first frame 21 and the second frame 22 can be butted at various angles.

It can be understood that, with respect to the second angle piece 12, in the case where the end of the first angle piece 11 away from the rotation axis 13 is in the first position, the first angle piece 11 and the second angle piece 12 can be maximally close; in the case where the end of the first angle piece 11 away from the rotation axis 13 is at the second position, the first angle piece 11 and the second angle piece 12 can be maximally away from each other. Thus, the first angular sheet 11 is rotated between the first position and the second position with respect to the second angular sheet 12, and the angle can be adjusted within 20 ° to 180 °.

EXAMPLE III

Referring to fig. 1 and 2, in some alternative embodiments, a first protrusion 111 is formed at one side of the first corner piece 11, and the first protrusion 111 contacts an inner wall of the first frame 21 when the first corner piece 11 is inserted into the first frame 21. In some alternative embodiments, a second protrusion 121 is formed at one side of the second corner piece 12, and the second protrusion 121 contacts an inner wall of the second bezel 22 in a state where the second corner piece 12 is inserted into the second bezel 22.

So, can utilize the arch to offset with the inner wall of frame, increase the friction of universal angle sign indicating number 10 and frame, prevent the slippage, be favorable to improving the stability of universal angle sign indicating number 10 at the frame installation.

Specifically, the first protrusion 111 is formed on a side of the first angular piece 11 facing the second angular piece 12 in the rotational direction. The second protrusion 121 is formed on the side of the second corner piece 12 facing the first corner piece 11 in the rotation direction. In this manner, in the case where the universal corner brace 10 is mounted on the frame, the first protrusions 111 and the second protrusions 121 face the inner side walls of the first frame 21 and the second frame 22.

Specifically, the first protrusion 111 may have an elongated shape, and the extending direction of the first protrusion 111 is the same as the extending direction of the rotating shaft 13. The second protrusion 121 may have a long shape, and the extending direction of the second protrusion 121 is the same as the extending direction of the rotating shaft 13. Therefore, the shapes of the first protrusion 111 and the second protrusion 121 are more regular, and the anti-falling effect is better.

Example four

Referring to fig. 1, 2 and 3, in some alternative embodiments, the rotation axis 13 is fixedly connected to one of the first angular chip sheet 11 and the second angular chip sheet 12, and is movably connected to the other of the first angular chip sheet 11 and the second angular chip sheet 12.

In this way, one corner piece is fixed relative to the rotating shaft 13, and the other corner piece can rotate relative to the rotating shaft 13, so that the relative rotation of the two corner pieces is more stable.

In this embodiment, the rotation axis 13 is fixedly connected to the second corner piece 12 and movably connected to the first corner piece 11. In other embodiments, the rotation axis 13 may be fixedly connected to the first corner piece 11 and movably connected to the second corner piece 12.

Specifically, the fixed connection may be that the rotating shaft 13 and the corresponding corner brace are fixed by a screw, a bolt, a buckle, a glue, or the like. The fixed connection can also be realized by integrally forming the rotating shaft 13 and the corresponding corner brace. The fixed connection may also be achieved by an interference fit.

Specifically, the movable connection may be that the corner brace limits the rotation shaft 13, and a gap is formed between the two. Thus, the angular code sheet can limit the range of the rotating shaft 13 and leave a space for rotation, thereby realizing rotation about the rotating shaft 13. The active link may be implemented by a clearance fit.

EXAMPLE five

Referring to fig. 3, in some alternative embodiments, a first connection hole 110 is formed at an end of the first corner piece 11 close to the rotation shaft 13, a second connection hole 120 is formed at an end of the second corner piece 12 close to the rotation shaft 13, the rotation shaft 13 is inserted into the first connection hole 110 and the second connection hole 120, and the rotation shaft 13 is in interference fit with one of the first connection hole 110 and the second connection hole 120 and is in clearance fit with the other of the first connection hole 110 and the second connection hole 120.

Therefore, the fixed connection between the rotating shaft 13 and one of the first angle code piece 11 and the second angle code piece 12 and the movable connection between the rotating shaft 13 and the other of the first angle code piece 11 and the second angle code piece 12 are conveniently and efficiently realized through the interference fit or clearance fit between the connecting hole and the rotating shaft 13.

In the embodiment, the rotating shaft 13 is in interference fit with the second connecting hole 120, and is in clearance fit with the first connecting hole 110. In other embodiments, the shaft 13 may be in interference fit with the first connection hole 110 and in clearance fit with the second connection hole 120.

Specifically, the cross section of the rotating shaft 13 is circular, the first connecting hole 110 and the second connecting hole 120 are both circular, and the diameter of the first connecting hole 110 is smaller than that of the second connecting hole 120. In this way, the shape of the connection hole is matched with that of the rotation shaft 13, so that the rotation is facilitated, and the first connection hole 110 and the second connection hole 120 have different diameters, so that the matching manner with the rotation shaft 13 is different.

In other embodiments, the first connection hole 110 may also be oval, rectangular or other shapes, and the second connection hole 120 may also be oval, rectangular or other shapes, which is not limited herein.

EXAMPLE six

Referring to fig. 3, in some alternative embodiments, one end of the first corner piece 11 close to the rotation axis 13 includes a first connection portion 112 and a second connection portion 113, and the first connection portion 112 and the second connection portion 113 are both formed with a first connection hole 110; a gap 114 is formed between the first connecting portion 112 and the second connecting portion 113 in the extending direction of the rotating shaft 13, the second corner piece 12 includes a third connecting portion 122 formed with a second connecting hole 120, and the third connecting portion 122 is inserted into the gap 114; the rotation shaft 13 is inserted into the first connection hole 110 formed in the first connection portion 112, the second connection hole 120 formed in the third connection portion 122, and the first connection hole 110 formed in the second connection portion 113 in this order.

In this way, the third connection portion 122 is inserted into the gap 114 between the first connection portion 112 and the second connection portion 113, so that the first connection portion 112, the second connection portion 113 and the third connection portion 122 can be aligned, and thus the rotating shaft 13 can sequentially connect the first connection portion 112, the second connection portion 113 and the third connection portion 122 through the connection holes.

Specifically, the form of the third connection portion 122 is complementary to the form of the void 114. Thus, after the third connecting portion 122 is inserted into the gap 114, the overall appearance is smoother.

Specifically, the rotation shaft 13 is formed separately from the first connection part 112, the second connection part 113, and the third connection part 122.

In other embodiments, the rotation shaft 13 may be integrally formed with the first connection portion 112 and inserted into the connection holes of the second connection portion 113 and the third connection portion 122; the rotation shaft 13 may be integrally formed with the second connection portion 113 and inserted into the connection holes of the first connection portion 112 and the third connection portion 122; the rotation shaft 13 may be integrally formed with the third connection portion 122 and inserted into the connection holes of the first connection portion 112 and the second connection portion 113. Therefore, the number of parts can be reduced, and the assembly efficiency is improved.

EXAMPLE seven

Referring to fig. 3, in some alternative embodiments, the shaft 13 includes a first connection section 131 and a second connection section 132, the first connection section 131 is matched with the first connection hole 110, the second connection section 132 is matched with the second connection hole 120, the first connection hole 110 and the second connection hole 120 have the same bore diameter, and the first connection section 131 and the second connection section 132 have different diameters.

In this way, in the case that the apertures of the first connection hole 110 and the second connection hole 120 are the same, the rotation shaft 13 is interference-fitted with one of the first connection hole 110 and the second connection hole 120 and clearance-fitted with the other of the first connection hole 110 and the second connection hole 120 by the first connection section 131 and the second connection section 132 having different diameters.

It can be understood that, in the case where the diameters of the first and second connection holes 110 and 120 are the same, the rotation shaft 13 is interference-fitted with one of the first and second connection holes 110 and 120 having a larger diameter and is clearance-fitted with the other one of the first and second connection holes 110 and 120 having a smaller diameter.

In other embodiments, the first connection hole 110 and the second connection hole 120 have different apertures, and the first connection section 131 and the second connection section 132 have the same diameter. As such, in the case where the diameters of the first and second connection sections 131 and 132 are the same, the rotation shaft 13 is interference-fitted with one of the first and second connection holes 110 and 120 and clearance-fitted with the other of the first and second connection holes 110 and 120 through the first and second connection holes 110 and 120 having different diameters. It can be understood that, in the case where the diameters of the first and second connection sections 131 and 132 are the same, the rotation shaft 13 is interference-fitted with one of the first and second connection holes 110 and 120, which has a smaller diameter, and is clearance-fitted with the other of the first and second connection holes 110 and 120, which has a larger diameter.

Example eight

In some alternative embodiments, the universal corner code 10 includes a fixing portion, and the fixing member of the battery assembly 100 fixes the frame and the fixing portion in a state where the first corner piece 11 and the second corner piece 12 butt the first frame 21 and the second frame 22.

Therefore, the frame is fixed with the universal corner connector 10, and looseness of the frame is avoided.

Specifically, the number of the fixed regions may be multiple, and the fixed regions are distributed in the first corner piece 11 and the second corner piece 12, respectively. Therefore, the fixing effect of the frame and the universal corner connector 10 is better.

Specifically, the fixing member may include a rivet, a screw, a snap, and the like.

It can be understood that the fixing member can be pre-arranged on the frame, and after the universal corner connector 10 is inserted into the frame, the fixing member is fixed to the fixing area of the universal corner connector 10 from the frame. The fixing piece also can not preset at the frame, and after the universal angle sign indicating number 10 inserts the frame, set up the fixing part to the fixed area of frame and universal angle sign indicating number 10 again.

Example nine

The battery assembly 100 of the embodiment of the present application includes a plurality of frames and the universal angle brace 10 of any one of embodiments one to nine, and the universal angle brace 10 is butted to two adjacent frames.

The battery pack 100 of the embodiment of the application can adapt to the frame included angles of various angles because the first corner piece 11 and the second corner piece 12 of the universal corner connector 10 can rotate around the rotating shaft 13, and the first frame 21 and the second frame 22 of various angles are butted, so that the assembly difficulty of the corner connector and the frame is favorably reduced, and the assembly and manufacturing efficiency of the battery pack 100 is improved.

In the embodiment, the plurality of solar cells in the battery assembly 100 may be sequentially connected in series to form a battery string, so as to achieve series bus output of current, for example, the series connection of the battery pieces may be achieved by providing solder strips (bus bars, interconnection bars), conductive back plates, and the like.

It is understood that in such embodiments, the battery assembly 100 may also include a frame, a backsheet, a photovoltaic glass, and an adhesive film. The adhesive film can be filled between the front side and the back side of the solar cell, the photovoltaic glass, the adjacent cell pieces and the like, and can be transparent colloid with good light transmittance and aging resistance as a filler, for example, the adhesive film can be an EVA adhesive film or a POE adhesive film, which can be selected according to actual conditions without limitation.

The photovoltaic glass can be an ultra-white glass, which has high light transmittance, high transparency, and excellent physical, mechanical, and optical properties, and for example, the ultra-white glass has a light transmittance of more than 92%, which can protect the solar cell without affecting the efficiency of the solar cell as much as possible. Simultaneously, the glued membrane can be in the same place photovoltaic glass and solar cell bonding, and the existence of glued membrane can carry out sealed insulation and dampproofing and waterproofing to solar cell.

The back plate can be attached to an adhesive film on the back of the solar cell, can protect and support the solar cell, has reliable insulativity, water resistance and aging resistance, can be selected in multiple ways, can be generally toughened glass, organic glass, an aluminum alloy TPT composite adhesive film and the like, can be specifically arranged according to specific conditions, and is not limited herein. The whole of the back plate, the solar cell, the adhesive film and the photovoltaic glass can be disposed on the frame, and the frame serves as a main external support structure of the whole cell module 100, and can stably support and mount the cell module 100, for example, the cell module 100 can be mounted at a position where it is required to be mounted through the frame.

Example ten

The photovoltaic system of this application embodiment includes the battery module of example nine.

The photovoltaic system of this application embodiment, because first angle code piece 11 and the second angle code piece 12 of universal angle sign indicating number 10 can revolve around pivot 13, so can adapt to the frame contained angle of various angles, dock first frame 21 and the second frame 22 of various angles, be favorable to reducing the assembly degree of difficulty of angle sign indicating number and frame, improve the efficiency of battery pack 100 assembly and preparation.

In this embodiment, the photovoltaic system can be applied to photovoltaic power stations, such as ground power stations, roof power stations, water surface power stations, etc., and can also be applied to devices or apparatuses that generate electricity by using solar energy, such as user solar power sources, solar street lamps, solar cars, solar buildings, etc. Of course, it is understood that the application scenario of the photovoltaic system is not limited thereto, that is, the photovoltaic system can be applied in all fields requiring solar energy for power generation. Taking a photovoltaic power generation system network as an example, the photovoltaic system may include a photovoltaic array, a combiner box and an inverter, the photovoltaic array may be an array combination of a plurality of battery assemblies 100, for example, the plurality of battery assemblies 100 may constitute a plurality of photovoltaic arrays, the photovoltaic array is connected to the combiner box, the combiner box may combine currents generated by the photovoltaic array, and the combined currents are converted into alternating currents required by a utility grid through the inverter and then are connected to the utility grid to realize solar power supply.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. Furthermore, the particular features, structures, materials, or characteristics described in connection with the embodiments or examples disclosed herein may be combined in any suitable manner in any one or more of the embodiments or examples.

Claims (10)

1. The utility model provides a battery pack's universal angle sign indicating number, its characterized in that includes first angle code piece, second angle code piece and pivot, and battery pack's frame includes adjacent first frame and second frame, first frame with the second frame forms the frame contained angle, first angle code piece with second angle code piece is used for inserting respectively first frame with the second frame winds the pivot rotates in order to adapt to the frame contained angle, will first frame with the butt joint of second frame.

2. The universal corner brace of claim 1, wherein an end of the first corner piece remote from the rotation axis rotates around the rotation axis between a first position and a second position relative to the second corner piece; under the condition that one end of the first angular chip piece, which is far away from the rotating shaft, is at the first position, an included angle formed by the first angular chip piece and the second angular chip piece is 20 degrees; under the condition that one end of the first angle code piece, which is far away from the rotating shaft, is located at the second position, an included angle formed by the first angle code piece and the second angle code piece is 180 degrees.

3. The universal corner brace of claim 1, wherein a first protrusion is formed at one side of the first corner piece, and contacts an inner wall of the first rim when the first corner piece is inserted into the first rim;

and/or a second protrusion is formed on one side of the second corner code piece, and the second protrusion contacts the inner wall of the second frame under the condition that the second corner code piece is inserted into the second frame.

4. The battery pack gimbal angle code of claim 1, wherein the pivot axis is fixedly connected to one of the first and second angle code pieces and movably connected to the other of the first and second angle code pieces.

5. The universal corner brace of claim 4, wherein a first connection hole is formed at an end of the first corner brace adjacent to the rotation shaft, a second connection hole is formed at an end of the second corner brace adjacent to the rotation shaft, the rotation shaft is inserted into the first connection hole and the second connection hole, and the rotation shaft is in interference fit with one of the first connection hole and the second connection hole and is in clearance fit with the other one of the first connection hole and the second connection hole.

6. The universal corner brace of claim 5, wherein the end of the first corner piece near the shaft comprises a first connection portion and a second connection portion, each of the first connection portion and the second connection portion forming the first connection hole; a gap is formed between the first connecting part and the second connecting part in the extending direction of the rotating shaft, the second corner piece comprises a third connecting part which is provided with the second connecting hole, and the third connecting part is inserted into the gap; the rotating shaft is sequentially inserted into the first connecting hole formed in the first connecting portion, the second connecting hole formed in the third connecting portion, and the first connecting hole formed in the second connecting portion.

7. The universal corner brace of claim 5, wherein the shaft comprises a first connecting section and a second connecting section, the first connecting section is engaged with the first connecting hole, the second connecting section is engaged with the second connecting hole, the first connecting hole and the second connecting hole have the same diameter, and the first connecting section and the second connecting section have different diameters.

8. The battery pack gimbal corner brace of claim 1, wherein the gimbal corner brace comprises a securing region, and wherein a securing member of the battery pack secures the frame and the securing region when the first and second corner pieces abut the first and second rims.

9. A battery assembly comprising a plurality of frames and the universal corner brace of any one of claims 1-8, the universal corner brace abutting two adjacent frames.

10. A photovoltaic system comprising the cell assembly of claim 9.

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