Heat preservation mechanism and battery piece string flow line

Abstract

The utility model belongs to the technical field of photovoltaic cell preparation, and discloses a thermal insulation mechanism and a cell string streamline. The heat preservation mechanism is used for conducting heat preservation and secondary heating on the battery pieces which flow through the battery piece string flow line and are heated by the battery piece string flow line, the heat preservation mechanism comprises a heat preservation cover and a heat source, the heat preservation cover covers part of the battery piece string flow line to form a heat preservation area, and the heat preservation cover is used for conducting heat preservation on the battery pieces flowing through the heat preservation area; the heat source is communicated with the heat preservation cover and used for providing heat for the heat preservation cover so as to conduct secondary heating on the battery piece flowing through the heat preservation area. According to the heat preservation mechanism, the upper portion of the battery piece can be sealed, secondary heating can be conducted on the battery piece, the heating effect of heat is improved, and therefore the heating efficiency and the resource utilization rate of the battery piece are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cell preparation, in particular to a heat preservation mechanism and a cell string streamline. Background Art

[0002] Photovoltaic panels in photovoltaic modules are made up of multiple strings of cells connected by busbars. A string of cells, in turn, is made up of multiple cells connected by welding ribbons. However, the welding ribbons are difficult to pre-fix before the lamination process. Therefore, a method of pre-bonding the welding ribbons with adhesive film is proposed.

[0003] The types of existing adhesive films can be selected from adhesive strips or heated adhesive strips. In order to ensure the uniformity of the molten layer medium during the lamination process, it is preferred to use EVA strips with low fluidity. However, since this strip film itself is not adhesive, it can be used to pre-bond the strip film by heating the battery cells. In the prior art, during the battery cell serial connection process, a corresponding heating mechanism can be set below the battery cell conveyor line to heat the surface of the battery cells on the conveyor line. However, since there is an empty area above the conveyor belt, that is, it is not a relatively closed area, heat will not be accumulated, which can easily lead to a large amount of heat loss, wasting energy and easily causing the temperature of the battery cell surface to drop again, which is not conducive to the bonding action of the hot-melt strip film, and greatly reducing production efficiency.

[0004] Therefore, there is an urgent need for a heat preservation mechanism and a battery cell string streamline to solve the above technical problems. Utility Model Content

[0005] One purpose of the present invention is to provide a heat preservation mechanism that can achieve sealing above the battery cell and can perform secondary heating on the battery cell, thereby improving the heating effect of the heat and thus improving the heating efficiency and resource utilization of the battery cell.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] The heat preservation mechanism is used to keep warm and reheat the battery cells flowing through the battery cell string flow line and heated by the battery cell string flow line, including:

[0008] A heat preservation cover is provided on a portion of the battery cell string flow line to form a heat preservation area, and the heat preservation cover is used to keep the battery cells flowing through the heat preservation area warm;

[0009] A heat source is connected to the heat preservation cover, and the heat source is used to provide heat to the heat preservation cover to perform secondary heating on the battery cells flowing through the heat preservation area.

[0010] Optionally, the heat preservation mechanism includes a heating device, which is arranged inside the heat preservation cover or on the battery cell string flow line to form the heat source.

[0011] Optionally, the heating device provided on the battery cell string streamline includes a heating mechanism and an exhaust mechanism. The heating mechanism is provided in the adsorption chamber of the battery cell string streamline to heat the battery cells flowing through the battery cell string streamline. One end of the exhaust mechanism is connected to the adsorption chamber, and the other end is connected to the thermal insulation cover to extract the hot air in the adsorption chamber into the thermal insulation cover for secondary utilization.

[0012] Optionally, the heat preservation cover is connected to a heat circulation pipe, and the heat circulation pipe is connected to the heating device arranged on the battery cell string flow line.

[0013] Optionally, a heat sink is provided in the heat-insulating cover, the heat sink is connected to the heat circulation pipe, and the heat sink is used to evenly distribute the hot air input into the heat circulation pipe to evenly heat the battery cells.

[0014] Optionally, the heat sink is plate-shaped and is arranged inside the heat-insulating cover. A plurality of heat-dissipating holes are evenly distributed on the heat sink, and both ends of the heat-dissipating holes are respectively connected to the heat-insulating area and the heat circulation pipe.

[0015] Optionally, the heat preservation mechanism further includes a fixing frame, which can be arranged on the battery cell string flow line; the heat preservation cover can be raised and lowered on the fixing frame.

[0016] Optionally, it also includes a lifting device, which includes a driving member and a connecting frame. The connecting frame is slidably connected to the fixed frame, and the connecting frame is fixedly connected to the thermal insulation cover. The output end of the driving member is connected to the connecting frame to drive the connecting frame to rise and fall.

[0017] Optionally, any one of the connecting frame and the fixing frame is provided with a plurality of slide rails, and the other is provided with a plurality of sliders, and the sliders are slidably connected to the slide rails in a one-to-one correspondence.

[0018] Another object of the present invention is to provide a battery cell string streamline that can achieve sealing above the battery cell, thereby improving the heating effect of the heat and thus improving the heating efficiency and resource utilization of the battery cell.

[0019] To achieve this purpose, the present invention adopts the following technical solutions:

[0020] The battery cell string flow line includes a conveyor line, a rolling mechanism and the above-mentioned insulation mechanism. The conveyor line is used to transport and heat the above-mentioned battery cells. The above-mentioned insulation mechanism is arranged on the above-mentioned conveyor line to be used for insulation and secondary heating of the battery cells. The above-mentioned rolling mechanism is arranged at the end of the above-mentioned conveyor line and is used to roll the adhesive film on the above-mentioned battery cells.

[0021] Beneficial effects of the utility model:

[0022] The utility model provides a heat preservation mechanism and a battery cell string flow line. A heat preservation cover is provided on the battery cell string flow line to form a relatively closed heat preservation area, and the heat preservation cover is connected to a heat source, so that the battery cells flowing through the heat preservation area are heated once by the battery cell string flow line and the heat preservation and secondary heating effects of the heat preservation cover, which greatly improves the heating efficiency and heating effect of the battery cells and also improves the resource utilization rate, thereby ensuring that the adhesive film can be bonded to the battery cells at high temperature, so that the welding strips and the battery cells are pre-fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an axonometric diagram of the heat preservation mechanism provided by the specific embodiment of the utility model;

[0024] Figure 2 It is a bottom view of the heat preservation mechanism provided by the specific embodiment of the utility model;

[0025] Figure 3 This is an axonometric diagram of the battery cell string streamline provided by the specific embodiment of the present utility model;

[0026] Figure 4 This is a cross-sectional view of a string of battery cells provided by a specific embodiment of the present invention;

[0027] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle;

[0028] Figure 6 yes Figure 3 A partial enlarged view of point B in the middle.

[0029] In the picture:

[0030] 10. Fixed frame; 11. Slide rail;

[0031] 20. Insulation cover; 30. Heat circulation pipe;

[0032] 40. heat sink; 41. heat dissipation hole;

[0033] 50. Lifting device; 51. Driving member; 52. Connecting frame; 53. Slider;

[0034] 200, conveyor line; 210, conveyor belt; 220, adsorption hole;

[0035] 300, adsorption chamber;

[0036] 400, rolling mechanism; 410, pressing roller; 420, elastic member; 430, sliding rod; 440, fixing block; 450, roller shaft. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0038] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "left," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0041] This embodiment provides a heat preservation mechanism, which is used to preserve heat and reheat the battery cells flowing through the battery cell string flow line and heated by the battery cell string flow line, that is, the battery cells are heated in the battery cell string flow line so that the adhesive film is heated and adhered to the conveyor line 200 of the battery cells and solder strips, and the battery cells flowing through it are preserved and reheated to improve the heating efficiency and heating effect, thereby improving the effectiveness of the adhesive film in pre-fixing the solder strips and battery cells.

[0042] Please refer to Figure 1 Specifically, the insulation mechanism includes an insulation cover 20 and a heat source. The insulation cover 20 is arranged to cover part of the battery cell streamline to form an insulation area. The insulation cover 20 is used to insulate the battery cells flowing through the insulation area; the heat source is connected to the insulation cover 20, and the heat source is used to provide heat to the insulation cover 20 to perform secondary heating on the battery cells flowing through the insulation area.

[0043] The heat preservation mechanism in this embodiment forms a relatively closed heat preservation area by arranging a heat preservation cover 20 on the battery cell string flow line, and the heat preservation cover 20 is connected to the heat source, so that the battery cells flowing through the heat preservation area are heated by the battery cell string flow line once and the heat preservation and secondary heating effects of the heat preservation cover 20, which greatly improves the heating efficiency and heating effect of the battery cells and also improves resource utilization, thereby ensuring that the adhesive film can be bonded to the battery cells at high temperature, so that the welding ribbon and the battery cells are pre-fixed.

[0044] In some embodiments, the insulation mechanism includes a heating device, which is arranged inside the insulation cover or on the battery cell streamline to form a heat source so that the insulation cover 20 can perform secondary heating on the battery cells flowing through the insulation area. That is, through the insulation and secondary heating effects of the insulation cover 20 and the primary heating of the battery cell streamline, the heating efficiency and heating effect of the battery cells are further improved.

[0045] In this embodiment, the heating device is arranged on the battery cell string streamline, so that the heat source of the heat preservation cover 20 is provided by the heating device on the battery cell string streamline, which also improves the utilization rate of the original heat source.

[0046] Specifically, the heating device arranged on the battery cell string streamline includes a heating mechanism and an exhaust mechanism. The heating mechanism is arranged in the adsorption chamber 300 of the battery cell string streamline to heat the battery cells flowing through the battery cell string streamline. One end of the exhaust mechanism is connected to the adsorption chamber 300, and the other end is connected to the thermal insulation cover 20, so as to extract the hot air in the adsorption chamber 300 into the thermal insulation cover 20 for secondary utilization.

[0047] More specifically, the heat preservation cover 20 is connected to a heat circulation pipe 30 , and the heat circulation pipe 30 is connected to a heating device provided on the battery cell string flow line, so as to provide a heat source for the heat preservation cover 20 .

[0048] Please refer to Figure 2 Optionally, a heat sink 40 is provided in the heat preservation cover 20, and the heat sink 40 is connected to the heat circulation pipe 30. The heat sink 40 is used to evenly distribute the hot air input into the heat circulation pipe 30 to evenly heat the battery cells, thereby making the temperature of the battery cells uniform and better achieving the bonding effect of the adhesive film.

[0049] Specifically, the heat sink 40 is in the shape of a plate and is arranged inside the heat preservation cover 20. A number of heat dissipation holes 41 are evenly distributed on the heat sink 40. The two ends of the heat dissipation holes 41 are respectively connected to the heat preservation area and the heat circulation pipe 30. The heat source flows from the heating device through the heat circulation pipe 30 to the several heat dissipation holes 41, and flows to the battery cell through the heat dissipation holes 41 to improve the heating effect and heating efficiency of the battery cell.

[0050] In some embodiments, the heat preservation mechanism further includes a fixing frame 10, which can be set on the battery cell string flow line; the heat preservation cover 20 can be raised and lowered on the fixing frame 10 to achieve a fixed connection between the heat preservation mechanism and the battery cell string flow line.

[0051] Specifically, the fixing frame 10 includes a base and a stand. The base is used to fix the battery cells in a string linear fashion, and the stand is used to support and fix the protective cover, thereby achieving support and fixation of the protective cover 20 .

[0052] Please refer back to Figure 1 In some embodiments, the heat preservation mechanism further includes a lifting device 50, which includes a driving member 51 and a connecting frame 52. The connecting frame 52 is slidably connected to the fixed frame 10, specifically, the connecting frame 52 is slidably connected to the vertical frame. The connecting frame 52 is fixedly connected to the heat preservation cover 20, and the output end of the driving member 51 is connected to the connecting frame 52 to drive the connecting frame 52 to rise and fall. Before operation, the driving member 51 can drive the connecting frame 52 to rise and fall, thereby driving the heat preservation cover 20 to rise and fall along the fixed frame 10, thereby adjusting the distance between the heat preservation cover 20 and the battery cell string streamline.

[0053] Optionally, the driving member 51 may be a motor, a cylinder, etc., which can drive the connection frame 52 to rise and fall.

[0054] Specifically, the connecting frame 52 is L-shaped, that is, the connecting frame 52 includes a horizontal plate and a vertical plate. The horizontal plate is used to fix the protective cover, and the vertical plate is connected to the output end of the driving member 51 to realize the driving of the lifting and lowering of the thermal insulation cover 20.

[0055] Optionally, either the connecting frame 52 or the fixing frame 10 is provided with a plurality of slide rails 11, and the other is provided with a plurality of sliders 53. The sliders 53 and the slide rails 11 are slidably connected one by one. Such a setting can guide the movement of the connecting frame 52, avoid the connecting frame 52 from moving crookedly, and cause the problem of unstable movement of the insulation cover 20, thereby improving the reliability of the lifting movement of the insulation cover 20.

[0056] Optionally, two slide rails 11 and two sliders 53 are provided in a one-to-one correspondence to improve the guidance of the movement of the connecting frame 52 and further improve the stability of its movement.

[0057] Please refer to Figure 3 and Figure 4 This embodiment also provides a battery cell stringing line, comprising a conveyor line 200 and a heat preservation mechanism as described in any of the above-described solutions. The conveyor line 200 is used to transport and heat the battery cells, and the heat preservation mechanism is provided on the conveyor line 200 to provide heat preservation and secondary heating for the battery cells. During operation, the conveyor line 200 transports the battery cells, and the heating device heats the conveyor line 200, thereby providing primary heating for the battery cells. Furthermore, during transport, the battery cells flow through the heat preservation mechanism. The heat preservation and secondary heating provided by the heat preservation mechanism improve the heating effect and efficiency of the battery cells, thereby improving the adhesion of the adhesive film to the battery cells.

[0058] Please refer to Figure 4 and Figure 5 Specifically, an adsorption chamber 300 is provided below the conveyor line 200, and a plurality of adsorption holes 220 are provided on the conveyor belt 210 of the conveyor line 200. A heating mechanism is provided in the adsorption chamber 300 to heat the battery cells flowing through the conveyor belt 210. One end of the exhaust mechanism is connected to the adsorption chamber 300, and the other end is connected to the heat preservation mechanism, so as to extract the hot air in the adsorption chamber 300 into the heat preservation mechanism for secondary use. The conveyor belt 210 is heated by the heating mechanism, and a negative pressure is formed in the adsorption chamber 300 by the exhaust mechanism, so that the adsorption holes 220 can better adsorb the battery cells and prevent the battery cells from falling. At the same time, the exhaust device extracts the heated gas in the adsorption chamber 300 and provides it to the heat preservation mechanism, so that the hot gas can be reused, further improving the heating effect and heating efficiency of the battery cells, and improving resource utilization.

[0059] Please refer to Figure 3 and Figure 6 In some embodiments, the battery cell stringing line further includes a rolling mechanism 400, which is disposed at the end of the conveyor line 200. The rolling mechanism 400 is used to roll the adhesive film on the battery cell. That is, after the adhesive film is bonded to the battery cell by high-temperature melting, it is further fixed by rolling by the rolling mechanism 400, so that the connection between the adhesive film and the battery cell is more stable, thereby improving the pre-fixing effect between the welding ribbon and the battery cell.

[0060] Specifically, the rolling mechanism 400 includes a pressure roller 410, a roller shaft 450, two elastic members 420, two slide bars 430, and two fixed blocks 440. The two fixed blocks 440 are respectively arranged on the conveyor line 200 and located on either side of the conveyor belt 210. The two slide bars 430 are respectively slidably connected to the two fixed blocks 440, and the slide bars 430 and the fixed blocks 440 are respectively connected in a position-limiting manner. An elastic member 420 is also provided between each slide bar 430 and the fixed block 440 to pull the slide bar 430 downward and prevent it from moving upward. The roller shaft 450 is arranged on the two slide bars 430, and the pressure roller 410 is sleeved on the roller shaft 450 so that the pressure rollers 410 are arranged on the conveyor belt 210 of the conveyor line 200 at intervals. This arrangement allows the pressure rollers 410 to maintain a preset distance from the conveyor line 200 and a certain rolling pressure, thereby ensuring that the pressure rollers 410 maintain the rolling effect on the battery cells and film.

[0061] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A heat preservation mechanism, used to preserve and reheat the battery cells flowing through the battery cell string flow line and heated by the battery cell string flow line, characterized in that: include: A heat preservation cover (20), the heat preservation cover (20) is provided on a portion of the battery slices in a string flow line to form a heat preservation area, and the heat preservation cover (20) is used to keep the battery slices flowing through the heat preservation area warm; A heat source is connected to the heat-insulating cover (20), and the heat source is used to provide heat to the heat-insulating cover (20) to perform secondary heating on the battery cells flowing through the heat-insulating area.

2. The heat preservation mechanism according to claim 1, characterized in that: The heat preservation mechanism comprises a heating device, which is arranged inside the heat preservation cover (20) or arranged on the battery slice string flow line to form the heat source.

3. The heat preservation mechanism according to claim 2, characterized in that: The heating device arranged on the battery cell string streamline comprises a heating mechanism and an exhaust mechanism. The heating mechanism is arranged in an adsorption chamber (300) of the battery cell string streamline to heat the battery cells flowing through the battery cell string streamline. One end of the exhaust mechanism is connected to the adsorption chamber (300), and the other end is connected to the heat preservation cover (20) to extract the hot air in the adsorption chamber (300) into the heat preservation cover (20) for secondary utilization.

4. The heat preservation mechanism according to claim 3, characterized in that: The heat preservation cover (20) is connected to a heat circulation pipe (30), and the heat circulation pipe (30) is connected to the heating device arranged on the battery cell string flow line.

5. The heat preservation mechanism according to claim 4, characterized in that: A heat dissipation element (40) is provided inside the heat-insulating cover (20), and the heat dissipation element (40) is connected to the heat circulation pipe (30). The heat dissipation element (40) is used to evenly distribute the hot air input into the heat circulation pipe (30) to evenly heat the battery cell.

6. The heat preservation mechanism according to claim 5, characterized in that: The heat dissipation element (40) is plate-shaped and is arranged inside the heat-insulating cover (20). A plurality of heat dissipation holes (41) are evenly distributed on the heat dissipation element (40). The two ends of the heat dissipation holes (41) are respectively connected to the heat-insulating area and the heat circulation pipe (30).

7. The heat preservation mechanism according to any one of claims 1 to 6, characterized in that: The heat preservation mechanism further comprises a fixing frame (10), and the fixing frame (10) can be arranged on the battery slice string flow line; the heat preservation cover (20) can be raised and lowered on the fixing frame (10).

8. The heat preservation mechanism according to claim 7, characterized in that: The invention also includes a lifting device (50), wherein the lifting device (50) includes a driving member (51) and a connecting frame (52), wherein the connecting frame (52) is slidably connected to the fixing frame (10), and the connecting frame (52) is fixedly connected to the heat-insulating cover (20), and the output end of the driving member (51) is connected to the connecting frame (52) to drive the connecting frame (52) to rise and fall.

9. The heat preservation mechanism according to claim 8, characterized in that: Any one of the connecting frame (52) and the fixing frame (10) is provided with a plurality of slide rails (11), and the other is provided with a plurality of sliders (53), and the sliders (53) and the slide rails (11) are slidably connected in a one-to-one correspondence.

10. The battery cells are arranged in a string, characterized in that: The invention comprises a conveyor line (200), a rolling mechanism (400) and a heat preservation mechanism as described in any one of claims 1 to 9, wherein the conveyor line (200) is used to transport and heat the battery cells, the heat preservation mechanism is arranged on the conveyor line (200) to be used for heat preservation and secondary heating of the battery cells, and the rolling mechanism (400) is arranged at the end of the conveyor line (200) and is used for rolling the adhesive film on the battery cells.

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