A double-sided clamping convection heat dissipation PERC double-sided battery fixing device

Abstract

The present invention relates to the technical field of Perc double-sided battery fixing, and more specifically, to a fixing device for Perc double-sided batteries with double-sided clamping and convection heat dissipation. The device comprises a battery body and a clamping heat dissipation device disposed below the battery body, the clamping heat dissipation device comprising at least a support plate, a clamping plate sliding on the support plate, and a lateral extension portion provided on the side of the clamping plate; a bottom locking rod, the bottom locking rod being used to pressurize and position the clamping plate; a convection heat dissipation assembly comprising a fixed heat dissipation plate connected to the lateral extension portion, a movable heat dissipation plate provided on the side of the fixed heat dissipation plate, and the fixed heat dissipation plate and the movable heat dissipation plate being connected by a pressure spring. The convection heat dissipation assembly forms dispersed contact cooling according to the positioning and clamping of the battery body by the clamping plate, which not only ensures that the battery body is positioned and installed, but also enables the convection heat dissipation assembly to be adapted for cyclic cooling of battery bodies of various lengths.

Description

Technical Field

[0001] The present invention relates to the technical field of Perc (Persistent Carbon) double-sided battery fixing, and in particular to a Persistent Carbon (Persistent Carbon) double-sided battery fixing device capable of double-sided clamping and convection heat dissipation. Background Art

[0002] Perc bifacial cell is a type of solar cell commonly used in the field of solar power generation technology.

[0003] Because it is installed outdoors, and sunlight shines on the Perc bifacial cells, directly converting light into electrical energy, forming a power generation technology. However, as the temperature in the outdoor environment gradually rises, the Perc bifacial cells used as power generation components may have the following problems in actual use:

[0004] High outdoor temperatures can put excessive thermal loads on Perc bifacial cells, causing them to not only be exposed to high-intensity sunlight but also be affected by air temperature. Excessively high temperatures can affect the efficiency of Perc bifacial cells.

[0005] Moreover, when the temperature of the Perc bifacial battery is high, it may cause burns to the Perc bifacial battery itself, thus affecting the service life of the Perc bifacial battery. Summary of the Invention

[0006] The object of the present invention is to provide a double-sided clamping and convection heat dissipation PERC bifacial battery fixing device to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides a double-sided clamping and convection heat dissipation device for a Perc bifacial battery, comprising a battery body and a clamping and heat dissipation device disposed below the battery body, wherein the clamping and heat dissipation device comprises at least:

[0008] A support plate, on which a clamping plate slides, the clamping plates are arranged opposite to each other, and the sides of the clamping plates are provided with transverse extensions, and the battery body is clamped and locked between the transverse extensions;

[0009] A bottom locking rod, wherein the end of the bottom locking rod is rotatably connected to the support plate, and the bottom locking rod is threadedly connected to the clamping plate, and the bottom locking rod is used to pressurize and position the clamping plate;

[0010] Convection heat dissipation assembly, when the convection heat dissipation assembly is in the expanded state, the convection heat dissipation assembly is symmetrically arranged on the clamping plate, the convection heat dissipation assembly includes a fixed heat dissipation plate connected to the lateral extension portion, and multiple groups of movable heat dissipation plates are provided on the side of the fixed heat dissipation plate. Cooling liquid is provided inside the fixed heat dissipation plate and the movable heat dissipation plate, and the fixed heat dissipation plate and the movable heat dissipation plate are connected by a pressure spring, which is used to elastically press the movable heat dissipation plate out.

[0011] As a further improvement of this technical solution, a first slide is provided on the surface of the support plate, a slider is provided at the bottom of the clamping plate, and the slider is slidably connected to the first slide, and the bottom locking rod is connected to the inner side of the first slide.

[0012] As a further improvement of the present technical solution, a connecting ring is provided at the end of the bottom locking rod, the connecting ring is rotatably arranged on the inner side of the clamping plate, and the end surface of the bottom locking rod close to the connecting ring is smooth.

[0013] As a further improvement of the present technical solution, a first card cavity is provided on the side of the lateral extension portion, a slide is provided on one side of the movable heat sink, and a slide groove is provided on the other side of the movable heat sink. The slide of the movable heat sink close to the side of the lateral extension portion slides in the first card cavity, and the slides on the adjacent movable heat sink slide in the slide groove.

[0014] As a further improvement of the present technical solution, a second card cavity is provided on the side of the horizontal extension part, and a protrusion is installed on the side of the fixed heat sink, which is inserted in the second card cavity; a second slide is provided on the side close to the first slide, and a support rod is installed at the bottom of the fixed heat sink, which slides in the second slide; and a baffle is installed on the side of the horizontal extension part.

[0015] As a further improvement of this technical solution, a top locking plate is provided on the clamping plate, and an extended threaded portion is provided at the bottom of the top locking plate. The extended threaded portion is threadedly connected to the clamping plate, and a bolt is threadedly connected on the surface of the top locking plate.

[0016] As a further improvement of this technical solution, a telescopic rod is provided on the inner side of the pressure spring, and the telescopic rod is composed of an inner rod and an outer rod slidingly connected, the inner rod is fixedly connected to the movable heat sink, and the outer rod is fixedly connected to the fixed heat sink.

[0017] As a further improvement of the present technical solution, limiting grooves are left on the surfaces of the fixed heat sink and the movable heat sink, and both ends of the pressure spring and the telescopic rod are located within the limiting grooves.

[0018] As a further improvement of the present technical solution, one side of each of the fixed heat sink and the movable heat sink is connected with a sealing column, which is used to seal the fixed heat sink and the movable heat sink.

[0019] As a further improvement of the present technical solution, multiple groups of blades are rotatably arranged on the inner sides of the fixed heat sink and the movable heat sink, and the blades are composed of a shaft and a plate body. A third slide is provided on the inner wall of the movable heat sink close to the blades at the corresponding position, and floating plates slide between the third slides. The floating plates are respectively located above the sides of the blades, and the floating plates float above the coolant.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the double-sided clamping convection heat dissipation fixture for Perc bifacial batteries, the convection heat dissipation assembly is used to position and clamp the battery body according to the size of the clamping plate to form dispersed contact cooling. This not only ensures that the battery body is positioned and installed, but also makes the convection heat dissipation assembly adaptable to the cyclic cooling of battery bodies of various lengths and sizes, and improves the specific utilization rate of the clamping heat dissipation device.

[0022] 2. In the double-sided clamping convection heat dissipation Perc bifacial battery fixing device, the top locking plate is screwed downward through the extended threaded portion to squeeze the top surface of the battery body, so that the top locking plate fits on the battery body and is positioned. When the thickness of the battery body is smaller than the height of the clamping plate, the battery body can be pressurized by screwing along the surface of the top locking plate through the bolt, ensuring that battery bodies of various sizes can be fixed.

[0023] 3. In the double-sided clamping convection heat dissipation fixture for Perc bifacial cells, the floating plate lowers as the coolant level drops, causing the floating plate to slide down the third slideway and squeeze the plate body in the blade, thereby rotating the blade. At this time, the coolant inside the fixed heat dissipation plate and the movable heat dissipation plate swirls and is evenly mixed, ensuring the cooling efficiency of the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the clamping heat dissipation device of the present invention;

[0026] Figure 3 This is a schematic diagram of the support plate structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the clamping plate of the present invention;

[0028] Figure 5 This is a schematic diagram of the bottom locking rod structure of the present invention;

[0029] Figure 6 It is a schematic structural diagram of the convection heat dissipation assembly of the present invention;

[0030] Figure 7 This is a schematic diagram of the top locking plate structure of the present invention;

[0031] Figure 8 This is an exploded view of the pressure spring and telescopic rod structure of the present invention;

[0032] Figure 9 It is a schematic diagram of the structure of the movable heat dissipation plate of the present invention;

[0033] Figure 10 A cross-sectional view of the movable heat dissipation plate structure of the present invention;

[0034] Figure 11 For the present invention Figure 10 Schematic diagram of the structure at point A.

[0035] The meaning of each number in the figure is:

[0036] 100. Battery body;

[0037] 200, clamping heat dissipation device;

[0038] 210, support plate; 211, first slide; 212, second slide;

[0039] 220, clamping plate; 221, transverse extension; 222, slider; 223, first clamping cavity; 224, second clamping cavity; 225, baffle;

[0040] 230, bottom locking rod; 231, connecting ring;

[0041] 240. Top locking plate; 241. Extended threaded portion; 242. Bolt;

[0042] 250. Convection heat dissipation assembly; 251. Fixed heat sink; 252. Movable heat sink; 2521. Slide plate; 2522. Slide groove; 2523. Limiting groove; 2524. Blade; 2525. Floating plate; 2526. Third slide; 253. Pressure spring; 2531. Telescopic rod; 254. Sealing column. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature identified as "first," "second," or "third" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined. Example

[0046] See also Figures 1-6 As shown, this embodiment provides a double-sided clamping convection heat dissipation PERC bifacial battery fixing device, including a battery body 100 and a clamping heat dissipation device 200 disposed below the battery body 100, the clamping heat dissipation device 200 at least including:

[0047] A support plate 210 is provided with a clamping plate 220 which slides on the support plate 210. The clamping plates 220 are arranged opposite to each other, and the sides of the clamping plates 220 are provided with lateral extensions 221. The battery body 100 is clamped and locked between the lateral extensions 221.

[0048] The bottom locking rod 230 has its end rotatably connected to the support plate 210, and the bottom locking rod 230 is threadedly connected to the clamping plate 220. The bottom locking rod 230 is used to pressurize and position the clamping plate 220. According to the length of the battery body 100, the bottom locking rod 230 is rotated inward or outward on the support plate 210, and the clamping plate 220 moves laterally accordingly, thereby pulling the clamping plate 220 to move accordingly, so as to position, press and clamp the battery body 100, so as to facilitate the installation of the battery body 100 outdoors.

[0049] Convection heat dissipation assembly 250, when the convection heat dissipation assembly 250 is in the expanded state, the convection heat dissipation assembly 250 is centrally symmetrically arranged on the clamping plate 220, and the convection heat dissipation assembly 250 includes a fixed heat dissipation plate 251 connected to the lateral extension portion 221, and a plurality of groups of movable heat dissipation plates 252 are provided on the side of the fixed heat dissipation plate 251. Cooling liquid is provided inside the fixed heat dissipation plate 251 and the movable heat dissipation plate 252, and the fixed heat dissipation plate 251 and the movable heat dissipation plate 252 are connected by a pressure spring 253, and the pressure spring 253 is used to elastically press the movable heat dissipation plate 252 out. In the initial state, the two convection heat dissipation assemblies 250 are on the same horizontal line, and the movable heat dissipation plates 252 are relatively pressed against each other, and adapt to the battery body as the clamping plate 220 moves. The length of 100 makes the clamping plate 220 drive the convection heat dissipation component 250 located on the surface to move, and the two sets of fixed heat dissipation plates 251 and the movable heat dissipation plates 252 move away from each other. After the battery body 100 is located in the clamping plate 220 and locked, the fixed heat dissipation plates 251 will contact and evenly dissipate heat from the battery body 100 located above. When the local movable heat dissipation plates 252 are no longer pressed due to the displacement away from each other, the movable heat dissipation plates 252 move outward under the pressure of the pressure spring 253, so that the movable heat dissipation plates 252 are in contact with and dissipate heat from the battery body 100 located above, thereby ensuring that the battery body 100 can be evenly cooled and that the battery body 100 will not form an excessively high temperature in a high temperature outdoor environment, thereby affecting normal use (wherein, Figure 2 The convection heat dissipation component 250 is in a compressed state, that is, the state when the movable heat dissipation plate 252 is compressed. When the movable heat dissipation plates 252 are unfolded, the movable heat dissipation plates 252 will dissipate heat with the battery body 100 on the upper side in dispersed contact). Therefore, the convection heat dissipation component 250 of the present invention forms dispersed contact cooling based on the positioning and clamping of the battery body 100 by the clamping plate 220, which not only ensures that the battery body 100 is positioned and installed, but also makes the convection heat dissipation component 250 adaptable to the cyclic cooling of battery bodies 100 of various lengths and sizes, and improves the specific utilization rate of the clamping heat dissipation device 200.

[0050] In order to analyze the specific situation of the sliding of the clamping plate 220 mentioned above and make the clamping plate 220 slide stably, a first slide 211 is provided on the surface of the support plate 210, and a slider 222 is provided at the bottom of the clamping plate 220, and the slider 222 is slidably connected to the first slide 211, and the bottom locking rod 230 is connected to the inner side of the first slide 211. The bottom locking rod 230 rotates along the first slide 211 to squeeze the clamping plate 220 to move, and the slider 222 will move in the first slide 211, causing compression on the battery body 100.

[0051] Among them, a connecting ring 231 is provided at the end of the bottom locking rod 230, and the connecting ring 231 is rotatably arranged on the inner side of the clamping plate 220, and the end surface of the bottom locking rod 230 close to the connecting ring 231 is smooth. Through the rotation setting of the connecting ring 231, when the bottom locking rod 230 is screwed in and out along the first slide 211, the connecting ring 231 will rotate in the clamping plate 220 and push the clamping plate 220 inward and outward.

[0052] In order to enable the movable heat sink 252 to slide stably when not under pressure, thereby improving the uniform dispersion stability of the movable heat sink 252, a first clamping cavity 223 is provided on the side of the transverse extension portion 221, a slide plate 2521 is provided on one side of the movable heat sink 252, and a slide groove 2522 is provided on the other side of the movable heat sink 252. The slide plate 2521 of the movable heat sink 252 close to the side of the transverse extension portion 221 slides in the first clamping cavity 223, and the slide plate 2521 and the slide groove 2522 on the adjacent movable heat sink 252 slide. When the movable heat sink 252 slides, it will be limited by the slide plate 2521 and the slide groove 2522, so that the movable heat sink 252 is sufficiently stable when sliding.

[0053] In order to further improve the convenience of assembling the fixed heat dissipation plate 251 during use, and considering that the fixed heat dissipation plate 251 is relatively long, the cooperation between one end of the fixed heat dissipation plate 251 and the horizontal extension portion 221 is not stable enough, a second card cavity 224 is provided on the side of the horizontal extension portion 221, and a protrusion is installed on the side of the fixed heat dissipation plate 251, and the protrusion is inserted in the second card cavity 224; a second slide 212 is provided on the side close to the first slide 211, and a support rod is installed at the bottom of the fixed heat dissipation plate 251, and the support rod is located in the second slide 212 and slides; and a baffle 225 is installed on the side of the horizontal extension portion 221, and the support rod improves the supporting stability of the fixed heat dissipation plate 251, and the baffle 225 adds a certain limit block to the fixed heat dissipation plate 251 to prevent the pressure of the movable heat dissipation plate 252 from causing the fixed heat dissipation plate 251 to shake.

[0054] In order to conveniently replenish the coolant to the fixed heat sink 251 and the movable heat sink 252, a sealing column 254 is connected to one side of the fixed heat sink 251 and the movable heat sink 252. The sealing column 254 is used to seal the fixed heat sink 251 and the movable heat sink 252. When the coolant is consumed later, the fixed heat sink 251 and the movable heat sink 252 can be unscrewed through the corresponding sealing column 254, and the coolant can be injected into the fixed heat sink 251 and the movable heat sink 252. Example 1

[0055] Considering that the lateral extension portion 221 only limits and fixes the side surface of the battery body 100, the top surface of the battery body 100 is exposed to the outside and is not subject to pressure. As the clamping plate 220 is squeezed, the battery body 100 may slide out. This embodiment makes further improvements on the basis of embodiment 1, such as Figure 2 and Figure 7 As shown:

[0056] A top locking plate 240 is provided on the clamping plate 220, and an extending threaded portion 241 is provided at the bottom of the top locking plate 240. The extending threaded portion 241 is threadedly connected to the clamping plate 220, and a bolt 242 is threadedly connected to the surface of the top locking plate 240. The top locking plate 240 is screwed downward through the extending threaded portion 241 to squeeze the top surface of the battery body 100, so that the top locking plate 240 fits on the battery body 100 and is positioned. When the thickness of the battery body 100 is smaller than the height of the clamping plate 220, the battery body 100 can be pressurized by twisting along the surface of the top locking plate 240 by the bolt 242 to ensure that various sizes of battery bodies 100 can be fixed. Example 2

[0057] Considering that the pressure spring 253 is made of elastic material and may be elastically deformed, the connection between the fixed heat sink 251 and the movable heat sink 252 by the pressure spring 253 may not be horizontally stable enough, affecting the contact and heat dissipation between the movable heat sink 252 and the battery body 100. This embodiment makes further improvements on the basis of embodiment 1, such as Figure 8 and Figure 9 As shown:

[0058] A telescopic rod 2531 is provided on the inner side of the pressure spring 253, and the telescopic rod 2531 is composed of an inner rod and an outer rod sliding. The inner rod is fixedly connected to the movable heat sink 252, and the outer rod is fixedly connected to the fixed heat sink 251. The expansion and compression of the pressure spring 253 are limited by the telescopic rod 2531, so that when the pressure spring 253 is compressed, it will not have a large accidental deformation state (the accidental deformation state refers to the pressure spring 253 exceeding its own compression and expansion state).

[0059] In order to ensure that the movable heat sink 252 can be compressed as close as possible, limiting grooves 2523 are left on the surfaces of the fixed heat sink 251 and the movable heat sink 252, and both ends of the pressure spring 253 and the telescopic rod 2531 are located within the limiting grooves 2523, expanding the degree of compression of the pressure spring 253 and the telescopic rod 2531. Example 3

[0060] Considering that the coolant will be gradually consumed as the cooling time passes, in order to ensure that the coolant is gradually consumed while the fluid inside is evenly mixed, and to ensure that the coolant maintains a certain cooling efficiency when cooling the battery body 100, this embodiment makes further improvements on the basis of embodiment 1, such as Figure 10 and Figure 11 As shown:

[0061] The inner sides of the fixed heat sink 251 and the movable heat sink 252 are both rotatably provided with a plurality of blades 2524. The blades 2524 are composed of a shaft and a plate. A third slide 2526 is provided on the inner wall of the movable heat sink 252 near the blades 2524 at the corresponding position. A floating plate 2525 slides between the third slides 2526. The floating plates 2525 are respectively located above the sides of the blades 2524 and float on the coolant. The floating plates 2525 will move with the water of the coolant. The plane is lowered, and the floating plate 2525 will gradually contact the plate body on the blade 2524. Because the plate bodies are divided into several groups and there are gaps between the plate bodies, the gaps are greater than the thickness of the floating plate 2525, so that the floating plate 2525 slides down along the third slide 2526 to squeeze the plate body in the blade 2524, so that the blade 2524 rotates. At this time, the coolant inside the fixed heat sink 251 and the movable heat sink 252 is turned over and mixed evenly, thereby ensuring the cooling efficiency of the coolant.

[0062] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-sided clamping and convection heat dissipation fixing device for a Perc double-sided battery, comprising a battery body (100) and a clamping and heat dissipation device (200) arranged below the battery body (100), characterized in that: The clamping heat dissipation device (200) at least comprises: A support plate (210), wherein a clamping plate (220) is slidably disposed on the support plate (210), the clamping plates (220) being arranged opposite to each other, and a lateral extension portion (221) is provided on the side of the clamping plate (220), and the battery body (100) is located between the lateral extension portions (221) to be clamped and locked; a bottom locking rod (230), wherein the end of the bottom locking rod (230) is rotatably connected to the support plate (210), and the bottom locking rod (230) is threadedly connected to the clamping plate (220), and the bottom locking rod (230) is used to pressurize and position the clamping plate (220); According to the length of the battery body (100), the bottom locking rod (230) is rotated inward or outward on the support plate (210), and the clamping plate (220) moves laterally accordingly, thereby pulling the clamping plate (220) to move accordingly, so as to position, press and clamp the battery body (100); A convection heat dissipation assembly (250), when the convection heat dissipation assembly (250) is in an expanded state, the convection heat dissipation assembly (250) is centrally symmetrically arranged on the clamping plate (220), the convection heat dissipation assembly (250) includes a fixed heat dissipation plate (251) connected to the transverse extension portion (221), a plurality of groups of movable heat dissipation plates (252) are provided on the side of the fixed heat dissipation plate (251), a coolant is provided inside the fixed heat dissipation plate (251) and the movable heat dissipation plate (252), and the fixed heat dissipation plate (251) and the movable heat dissipation plate (252) are connected by a pressure spring (253), and the pressure spring (253) is used to elastically press the movable heat dissipation plate (252); The two convection heat dissipation groups (250) are on the same horizontal line, and the movable heat dissipation plates (252) are relatively pressed against each other; One side of the fixed heat dissipation plate (251) and the movable heat dissipation plate (252) are both connected to a sealing column (254), and the sealing column (254) is used to seal the fixed heat dissipation plate (251) and the movable heat dissipation plate (252); Multiple groups of blades (2524) are rotatably provided on the inner sides of the fixed heat dissipation plate (251) and the movable heat dissipation plate (252). The blades (2524) are composed of a shaft and a plate body. A third slideway (2526) is provided on the inner wall of the movable heat dissipation plate (252) close to the blades (2524) at the corresponding position. A floating plate (2525) slides between the third slideways (2526). The floating plates (2525) are respectively located above the sides of the blades (2524), and the floating plates (2525) float on the coolant.

2. The double-sided clamping and convection heat dissipation PERC bifacial battery fixing device according to claim 1, characterized in that: A first slideway (211) is provided on the surface of the support plate (210), a slider (222) is provided at the bottom of the clamping plate (220), and the slider (222) is slidably connected to the first slideway (211), and the bottom locking rod (230) is connected to the inner side of the first slideway (211).

3. The double-sided clamping and convection heat dissipation PERC bifacial battery fixing device according to claim 2, characterized in that: A connecting ring (231) is provided at the end of the bottom locking rod (230). The connecting ring (231) is rotatably arranged inside the clamping plate (220), and the end surface of the bottom locking rod (230) close to the connecting ring (231) is smooth.

4. The fixing device for a double-sided PERC battery with double-sided clamping and convection heat dissipation according to claim 1, characterized in that: A first card cavity (223) is provided on the side of the transverse extension portion (221), a slide plate (2521) is provided on one side of the movable heat dissipation plate (252), and a slide groove (2522) is provided on the other side of the movable heat dissipation plate (252). The slide plate (2521) of the movable heat dissipation plate (252) close to the side of the transverse extension portion (221) slides in the first card cavity (223), and the slide plate (2521) on the adjacent movable heat dissipation plate (252) slides in the slide groove (2522).

5. The fixing device for a double-sided PERC battery with double-sided clamping and convection heat dissipation according to claim 2, characterized in that: A second card cavity (224) is provided on the side of the transverse extension portion (221), a protrusion is installed on the side of the fixed heat dissipation plate (251), and the protrusion is inserted into the second card cavity (224); a second slideway (212) is provided on the side close to the first slideway (211), a support rod is installed at the bottom of the fixed heat dissipation plate (251), and the support rod is located in the second slideway (212) and slides; and a baffle (225) is installed on the side of the transverse extension portion (221).

6. The fixing device for a double-sided PERC battery with double-sided clamping and convection heat dissipation according to claim 1, characterized in that: A top locking plate (240) is provided on the clamping plate (220), and an extending threaded portion (241) is provided at the bottom of the top locking plate (240). The extending threaded portion (241) is threadedly connected to the clamping plate (220), and a bolt (242) is threadedly connected on the surface of the top locking plate (240).

7. The fixing device for a double-sided PERC battery with double-sided clamping and convection heat dissipation according to claim 1, characterized in that: A telescopic rod (2531) is provided on the inner side of the pressure spring (253), and the telescopic rod (2531) is composed of an inner rod and an outer rod that slide together. The inner rod is fixedly connected to the movable heat sink (252), and the outer rod is fixedly connected to the fixed heat sink (251).

8. The fixing device for a double-sided PERC battery with double-sided clamping and convection heat dissipation according to claim 7, characterized in that: Limiting grooves (2523) are left on the surfaces of the fixed heat dissipation plate (251) and the movable heat dissipation plate (252), and both ends of the pressure spring (253) and the telescopic rod (2531) are located within the limiting grooves (2523).

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