HJT battery assembly

Abstract

The utility model relates to the technical field of solar cells, and discloses an HJT cell assembly, which comprises a power generation part comprising a plurality of cell units hinged in sequence, each cell unit comprises a first cell string and a second cell string, and the first cell string is hinged with the second cell string; the regulation and control part is connected to the power generation part, and the regulation and control part is used for regulating the angle between the first battery string and the second battery string; the power generation part is electrically connected with the collection part; and the supporting part is connected to the regulating and controlling part and the collecting part. By using the HJT battery assembly, the adjusting part can adjust the angles of the first battery string and the second battery string, so that one battery string in the battery unit receives more light energy, more energy conversion is realized, the photoelectric conversion efficiency is improved, and the light irradiated on the other battery string of the battery unit can be reflected, so that the photoelectric conversion efficiency is improved. And the partially reflected light can be reused, so that the photoelectric conversion efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of solar cells, and more specifically, to an HJT battery module. Background Technology

[0002] HJT solar modules, or heterojunction solar modules, are a high-efficiency solar cell technology product in the current photovoltaic industry. HJT solar modules have a symmetrical bifacial cell structure with N-type crystalline silicon in the middle. Intrinsic amorphous silicon thin films and P-type amorphous silicon thin films are deposited sequentially on the front side to form a PN junction, while intrinsic amorphous silicon thin films and N-type amorphous silicon thin films are deposited sequentially on the back side to form a back surface field. In addition, since amorphous silicon has relatively poor conductivity, transparent conductive films (TCO) are deposited on both sides of the cell to conduct electricity. Finally, screen printing technology is used to form bifacial electrodes.

[0003] Existing HJT battery modules are typically flat, and the angle of the internal cells cannot be adjusted after installation, which prevents the HJT battery modules from receiving light energy effectively, resulting in low photoelectric conversion efficiency. Utility Model Content

[0004] The purpose of this invention is to overcome the defects in the existing technology and provide an HJT battery module that can adjust the angle of the battery cells.

[0005] To achieve the above objectives, the technical solution of this utility model is to provide an HJT battery assembly, comprising:

[0006] The power generation unit includes multiple battery units that are hinged together in sequence. The battery units are used to absorb and convert light energy. Each battery unit includes a first battery string and a second battery string. The first battery string and the second battery string are hinged together. Both the first battery string and the second battery string are planar plates.

[0007] A control unit is connected to the power generation unit, and the control unit is used to adjust the angle between the first battery string and the second battery string;

[0008] A collection unit, wherein the power generation unit is electrically connected to the collection unit, and the collection unit is used to receive and collect the electrical energy converted by the power generation unit;

[0009] A support section is connected to the control section and the collection section.

[0010] By using the HJT battery assembly described in this utility model, the adjustment unit can adjust the angle of the first battery string and the second battery string, so that one of the battery strings in the battery unit receives more light energy, achieves more energy conversion, and improves photoelectric conversion efficiency. Meanwhile, the light illuminating the other battery string in the battery unit will be reflected, and part of the reflected light can be reused, further improving the photoelectric conversion efficiency.

[0011] Preferably, the control unit includes a mounting frame, telescopic members, drive rods, and a drive component. The mounting frame and the drive component are both mounted on the support unit. Multiple telescopic members are symmetrically arranged along the central axis of the mounting frame, and the number of telescopic members is twice the number of the second battery strings. A mounting groove is provided inside the mounting frame, and the telescopic members are installed in the mounting groove. The number of drive rods is the same as the number of the second battery strings. Each drive rod has two ends fixedly connected to two corresponding telescopic members, and the drive rod is rotatably connected to the second battery strings. One end of the power generation unit is rotatably connected to the mounting frame, and the drive rod at the other end of the power generation unit is driven by the drive component. This design facilitates different angle adjustments for the first and second battery strings.

[0012] Preferably, the telescopic component includes a slider and a spring. The slider is slidably connected to the mounting groove, one end of the spring is fixedly connected to the slider, and the other end of the spring is fixedly connected to the slider of another telescopic component. This design facilitates the synchronous adjustment of multiple telescopic components.

[0013] Preferably, the control unit further includes a limiting member, which is mounted on the mounting frame and fits against the inner side of the slider. This design prevents the slider from falling off.

[0014] Preferably, the angle between the first battery string and the second battery string is α, and the range of α is 120°-175°. This design can ensure the normal operation of the control unit.

[0015] Preferably, the first battery string and the second battery string are electrically connected by wires. This design helps to improve the lifespan of the HJT battery module.

[0016] Preferably, the collection unit includes a junction box, a photovoltaic inverter, and a protective cover mounted on the support unit, with both the power generation unit and the photovoltaic inverter electrically connected to the junction box. This design allows the protective cover to protect the junction box and the photovoltaic inverter, reducing the possibility of HJT battery module failure and thus lowering maintenance costs.

[0017] Preferably, the protective cover is provided with heat dissipation vents, with the openings facing downwards. This design facilitates heat dissipation for the junction box and photovoltaic inverter, preventing heat buildup inside the protective cover from affecting their normal operation. Furthermore, because the heat dissipation vents face downwards, dust and rainwater are less likely to enter the protective cover through the vents.

[0018] Preferably, a controller is installed inside the protective cover and mounted on the support portion, and a light direction sensor is installed on the top of the protective cover. Both the light direction sensor and the driving component are electrically connected to the controller. This design allows the light direction sensor to monitor the light direction and thus control the angle adjustment of the first and second battery strings, making the adjustment more intelligent.

[0019] Preferably, the support includes multiple legs rotatably mounted on the mounting frame and a support frame disposed on one side of the mounting frame. The drive unit, the junction box, the photovoltaic inverter, the protective cover, and the controller are all mounted on the support frame. This design can improve the stability of the HJT battery module installation.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. By using the HJT battery assembly described in this utility model, the adjustment unit can adjust the angle of the first battery string and the second battery string, so that one of the battery strings in the battery unit receives more light energy, achieves more energy conversion, and improves the photoelectric conversion efficiency. Meanwhile, the light illuminating the other battery string in the battery unit will be reflected, and part of the reflected light can be reused, further improving the photoelectric conversion efficiency.

[0022] 2. This utility model can adjust the angle between the power generation unit and the horizontal direction by rotating the second pillar. The angle between the power generation unit and the horizontal direction can be adjusted according to different geographical locations and terrain conditions, so that the HJT battery module can maintain a high power generation efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the HJT battery module;

[0024] Figure 2 This is a 3D structural diagram of the HJT battery module (excluding the protective cover and light direction sensor).

[0025] Figure 3 This is a three-dimensional structural diagram of a battery cell;

[0026] Figure 4 This is a three-dimensional structural diagram of the control unit;

[0027] Figure 5This is a three-dimensional structural diagram of the mounting frame;

[0028] Figure 6 This is a three-dimensional structural diagram of the drive rod;

[0029] Figure 7 yes Figure 4 Enlarged view of the structure at point B;

[0030] Figure 8 This is a schematic diagram of the three-dimensional structure of the protective shield;

[0031] Figure 9 yes Figure 2 Enlarged view of the structure at point A in the middle;

[0032] Figure 10 This is a schematic diagram of the front view cross section of the HJT battery module after light irradiation in Example 1.

[0033] In the diagram: 100, power generation unit; 110, first battery string; 120, second battery string;

[0034] 200. Control unit; 210. Mounting frame; 211. Mounting slot; 220. Telescopic component; 221. Slider; 222. Spring; 230. Drive rod; 231. Rod body; 232. Rotating shaft; 240. Drive component; 250. Limiting component;

[0035] 300. Collection unit; 310. Junction box; 320. Photovoltaic inverter; 330. Protective cover; 331. Heat dissipation vent;

[0036] 400. Support unit; 410. Outrigger; 411. First support column; 412. Second support column; 413. Support foot; 420. Support frame; 421. Base; 422. Column; 423. Mounting plate; 424. Electric telescopic rod; 425. First pivot; 426. Second pivot; 427. Third pivot;

[0037] 500, Controller;

[0038] 600. Light direction sensor. Detailed Implementation

[0039] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed to enable those skilled in the art to better understand and implement the subject matter described herein. Changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0040] To better understand this utility model, the following is in conjunction with... Figures 1-10 This invention provides a detailed description of an HJT battery assembly.

[0041] Example 1:

[0042] like Figures 1-3 As shown, an HJT battery assembly includes:

[0043] The power generation unit 100 includes a plurality of battery units that are hinged in sequence. The battery units are used to absorb and convert light energy. The battery units include a first battery string 110 and a second battery string 120. The first battery string 110 and the second battery string 120 are hinged together. Both the first battery string 110 and the second battery string 120 are planar plates.

[0044] The control unit 200 is connected to the power generation unit 100. The control unit 200 is used to adjust the angle between the first battery string 110 and the second battery string 120.

[0045] The collecting unit 300 and the power generating unit 100 are electrically connected to the collecting unit 300. The collecting unit 300 is used to receive and collect the electrical energy converted by the power generating unit 100.

[0046] The support unit 400 is connected to the control unit 200 and the collection unit 300.

[0047] It should be noted that the power generation unit 100, which is composed of multiple battery cells in a wave-shaped structure, has multiple battery cells installed in the battery string (including the first battery string 110 and the second battery string 120). The battery cells in the same battery string are connected by solder strips. The control unit 200 adjusts the angle of the first battery string 110 and the second battery string 120 so that the plate surface of the first battery string 110 (or the second battery string 120) is as perpendicular as possible to the direction of light irradiation, so as to receive more light energy and improve the photoelectric conversion efficiency. When light shines on the second battery string 120 (or the first battery string 110), the light will be reflected, and some of the reflected light will be re-converged on the first battery string 110 (or the second battery string 120), thereby improving the utilization rate of light energy and further improving the photoelectric conversion efficiency.

[0048] like Figure 10 As shown, three parallel arrows represent the direction of light illumination, and another arrow indicates the direction of light reflected from the first battery string 110. The reflected light then converges back onto the second battery string 120. By reusing the reflected light, the utilization rate of light energy is improved.

[0049] In this embodiment, the size of the battery cell is 210mm×210mm (length×width). Multiple battery cells in the same battery string are connected together by welding strips. The power generation unit 100 is inclined and the angle between the power generation unit 100 and the horizontal direction is 30°.

[0050] By using the HJT battery assembly of this utility model, the adjustment unit can adjust the angle of the first battery string 110 and the second battery string 120, so that one of the battery strings in the battery unit receives more light energy, achieves more energy conversion, and improves photoelectric conversion efficiency. Meanwhile, the light illuminating the other battery string in the battery unit will be reflected, and part of the reflected light can be reused, further improving the photoelectric conversion efficiency.

[0051] Example 2:

[0052] As an optimization of Example 1, such as Figures 4-6 As shown, the control unit 200 includes a mounting frame 210, a telescopic member 220, a drive rod 230, and a drive member 240. The mounting frame 210 and the drive member 240 are both mounted on the support unit 400. Multiple telescopic members 220 are symmetrically arranged along the central axis of the mounting frame 210, and the number of telescopic members 220 is twice the number of the second battery string 120. A mounting groove 211 is provided on the inner side of the mounting frame 210, and the telescopic members 220 are installed in the mounting groove 211. The number of drive rods 230 is the same as the number of the second battery string 120. The two ends of the drive rod 230 are fixedly connected to the corresponding two telescopic members 220, and the drive rod 230 is rotatably connected to the second battery string 120. One end of the power generation unit 100 is rotatably connected to the mounting frame 210, and the drive rod 230 located at the other end of the power generation unit 100 is droopingly connected to the drive member 240.

[0053] It should be noted that the first battery string 110, which is furthest from the drive component 240, is rotatably connected to the mounting frame 210, and the drive rod 230, which is closest to the drive component 240, is driven to the drive component 240 through a connecting block. The drive component 240 drives the drive rod 230 to move along the length direction of the mounting frame 210, which causes the length of the multiple telescopic components 220 to change, and the first battery string 110 and the second battery string 120 to rotate accordingly, thereby realizing the angle adjustment of the first battery string 110 and the second battery string 120.

[0054] In this embodiment, the angle between the length direction and the horizontal direction of the mounting frame 210 is 30°. The driving component 240 is an electric cylinder. The electric cylinder can more precisely control the extension and retraction, thereby achieving more precise regulation. One electric cylinder is provided, and its driving end is connected to the midpoint of the driving rod 230 via a connecting block. The thrust of the electric cylinder is more evenly distributed on the driving rod 230, allowing the electric cylinder to more stably push the driving rod 230 to move. The driving rod 230 includes a rod body 231 and two opposing rotating shafts 232. 232 is fixedly installed on the rod 231, and the two rotating shafts 232 are rotatably connected to the two ends of the second battery string 120 respectively. When the electric cylinder pushes the drive rod 230 closest to the electric cylinder to move, the second battery string 120 will rotate around the rotating shaft 232 while moving with the drive rod 230. The first battery string 110, which is hinged to the second battery string 120, will also move and rotate accordingly. By adjusting the extension and retraction of the electric cylinder, the different angles of the first battery string 110 and the second battery string 120 can be adjusted.

[0055] Example 3:

[0056] As an optimization of Example 2, such as Figure 4 and Figure 7 As shown, the telescopic component 220 includes a slider 221 and a spring 222. The slider 221 is slidably connected to the mounting groove 211. One end of the spring 222 is fixedly connected to the slider 221, and the other end of the spring 222 is fixedly connected to the slider 221 of another telescopic component 220.

[0057] It should be noted that the multiple springs 222 are of the same model, and under the push of the drive component 240, the extension and retraction of the multiple springs 222 are also the same. The synchronous adjustment of the multiple extension components 220 can be completed by pushing the drive component 240. The structure is simple and the adjustment is convenient.

[0058] In this embodiment, one end of the spring 222, which is furthest from the driving member 240, is fixedly connected to the slider 221, and the other end of the spring 222, which is furthest from the driving member 240, is fixedly connected to the inner wall of the mounting groove 211.

[0059] Example 4:

[0060] As an optimization of Example 3, such as Figure 4 and Figure 7 As shown, the control unit 200 also includes a limiting member 250, which is mounted on the mounting frame 210 and fits against the inner side of the slider 221.

[0061] It should be noted that the inner side of slider 221 is the side of slider 221 that is close to the second battery string 120.

[0062] In this embodiment, the limiting member 250 is U-shaped, with its opening facing the outside of the mounting frame 210. The limiting member 250 is close to the inner wall of the slider 221 and fits against the slider 221. The limiting member 250 is locked onto the mounting frame 210 by bolts and nuts. Under the action of the mounting groove 211 and the limiting member 250, the slider 221 can only slide along the length direction of the mounting frame 210 and will not fall out of the mounting groove 211.

[0063] Example 5:

[0064] As an optimization of embodiment 4, the included angle between the first battery string 110 and the second battery string 120 is α, and the range of α is 120°-175°.

[0065] It should be noted that the first battery string 110 and the second battery string 120 of the same battery unit form an inverted V-shaped structure. The included angle between any two adjacent battery strings (the first battery string 110 and the second battery string 120) in the power generation unit 100 is α. The control unit 200 adjusts the angle of the battery strings by adjusting the size of the included angle α between the two adjacent battery strings. The range of α is controlled to be 120°-175° to prevent the included angle between the first battery string 110 and the second battery string 120 from being too small, which would cause the first battery string 110 to block the second battery string 120 or the second battery string 120 to block the first battery string 110. It can also prevent the included angle between the first battery string 110 and the second battery string 120 from being too large after the drive member 240 is adjusted, which would cause the first battery string 110 and the second battery string 120 of the same battery unit to form a planar structure (the first battery string 110 and the second battery string 120 are in the same plane), making it impossible for the drive member 240 to push the drive rod 230 to move, thus affecting the normal operation of the control unit 200.

[0066] Example 6:

[0067] As an optimization of Example 5, such as Figures 1-3 As shown, the first battery string 110 and the second battery string 120 are electrically connected by wires.

[0068] It should be noted that two adjacent battery strings (the first battery string 110 and the second battery string 120) are connected in parallel by wires. Since the first battery string 110 and the second battery string 120 need to be angled, if the first battery string 110 and the second battery string 120 are still connected by solder ribbon, the solder ribbon will break during the repeated adjustment of the angle of the first battery string 110 and the second battery string 120, causing the HJT battery module to malfunction. However, by connecting them with wires, the wires are less likely to break, the HJT battery module is less likely to fail, and the maintenance cost is reduced.

[0069] Example 7:

[0070] As an optimization of Example 6, such as Figure 1 and Figure 2 As shown, the collection unit 300 includes a junction box 310, a photovoltaic inverter 320, and a protective cover 330 mounted on the support unit 400. The power generation unit 100 and the photovoltaic inverter 320 are both electrically connected to the junction box 310.

[0071] It should be noted that the junction box 310 collects the electrical energy generated by the power generation unit 100 and transmits it to the photovoltaic inverter 320. The photovoltaic inverter 320 converts the DC power received from the junction box 310 into AC power and transmits it to the external power grid or to the load via cable. The junction box 310 is equipped with connectors, fuses and circuit breakers to ensure the safe and stable operation of the HJT battery module and prevent problems such as current leakage and poor contact. The protective cover 330 can provide waterproof and dustproof protection for the junction box 310 and the photovoltaic inverter 320, reducing the possibility of HJT battery module failure and thus reducing maintenance costs.

[0072] In this embodiment, the main body of the electric cylinder is also housed inside the protective cover 330, which also protects the electric cylinder and improves the service life of the HJT battery assembly.

[0073] Example 8:

[0074] As an optimization of Example 7, such as Figure 8 As shown, the protective cover 330 is provided with a heat dissipation vent 331, and the opening of the heat dissipation vent 331 faces downward.

[0075] This design facilitates heat dissipation for the junction box 310 and the photovoltaic inverter 320, preventing heat buildup inside the protective cover 330 and affecting the normal operation of the junction box 310 and the photovoltaic inverter 320. Since the heat dissipation vent 331 faces downwards, dust and rainwater are less likely to enter the protective cover 330 from the heat dissipation vent 331.

[0076] Example 9:

[0077] As an optimization of Example 8, such as Figure 1 and Figure 2 As shown, a controller 500 installed on the support 400 is provided inside the protective cover 330, and a light direction sensor 600 is installed on the top of the protective cover 330. The light direction sensor 600 and the drive unit 240 are both electrically connected to the controller 500.

[0078] It should be noted that the light direction sensor 600 can monitor and output the direction information of the light in real time through multiple photosensitive components and algorithms. After receiving the light direction information, the controller 500 will transmit an electrical signal to the drive component 240 to control the drive component 240 to extend or shorten, thereby adjusting the angle of the first battery string 110 and the second battery string 120, making the adjustment more intelligent and efficient.

[0079] Example 10:

[0080] As an optimization of Example 9, such as Figure 1 , Figure 2 and Figure 9 As shown, the support 400 includes multiple legs 410 rotatably mounted on the mounting frame 210, and a support frame 420 disposed on one side of the mounting frame 210. The drive unit 240, junction box 310, photovoltaic inverter 320, protective cover 330, and controller 500 are all mounted on the support frame 420. This design can improve the stability of HJT battery module installation.

[0081] In this embodiment, the support leg 410 includes a first support column 411, a second support column 412, and a support foot 413. The top end of the first support column 411 is rotatably connected to the mounting frame 210. The first support column 411 is provided with threads. The second support column 412 is threadedly connected to the first support column 411. The support foot 413 is rotatably connected to the bottom end of the second support column 412.

[0082] When installing HJT battery modules, in order to ensure that the HJT battery modules have high power generation efficiency, the angle between the power generation unit 100 and the horizontal direction needs to be adjusted according to the geographical location and terrain conditions. By rotating the second support column 412, the length of the support leg 410 can be adjusted, thereby adjusting the height of the mounting frame 210 and the angle between the mounting frame 210 and the horizontal direction, and further adjusting the angle between the power generation unit 100 and the horizontal direction. By rotating the support foot 413, the support foot 413 can be made to fit against the mounting surface (the reference surface for the installation of HJT battery modules), improving the stability of the HJT battery module installation.

[0083] The support frame 420 includes a base 421, columns 422, a mounting plate 423, and an electric telescopic rod 424. The mounting plate 423 is provided with two first rotating shafts 425 and two second rotating shafts 426. The two first rotating shafts 425 are located on the two end faces of the mounting plate 423, and the two second rotating shafts 426 are located on the two end faces of the mounting plate 423, respectively. There are two columns 422, and both columns 422 are installed on the top of the base 421. The two columns 422 are rotatably connected to the two end faces of the mounting plate 423 through the two first rotating shafts 425. A third rotating shaft 427 that cooperates with the second rotating shafts 426 is provided on the side of the column 422 away from the mounting plate 423. One end of the electric telescopic rod 424 is rotatably connected to the second rotating shaft 426, and the other end of the electric telescopic rod 424 is rotatably connected to the third rotating shaft 427.

[0084] By controlling the extension and retraction of the electric telescopic rod 424, the angle of the mounting plate 423 can be adjusted so that the extension and retraction direction of the electric cylinder is consistent with the length direction of the mounting frame 210, so that the electric cylinder can stably push the drive rod 230 to move along the length direction of the mounting frame 210.

[0085] The embodiments of the utility model have been described above with reference to the accompanying drawings. However, the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments without departing from the spirit of the embodiments and the scope of protection of the claims, and all of these forms are within the protection scope of the embodiments.

Claims

1. An HJT battery module, characterized in that, include: The power generation unit (100) includes a plurality of battery cells that are hinged in sequence. The battery cells are used to absorb and convert light energy. The battery cells include a first battery string (110) and a second battery string (120). The first battery string (110) and the second battery string (120) are hinged together. Both the first battery string (110) and the second battery string (120) are planar plates. A control unit (200) is connected to the power generation unit (100), and the control unit (200) is used to adjust the angle between the first battery string (110) and the second battery string (120); The collection unit (300) is electrically connected to the power generation unit (100), and the collection unit (300) is used to receive and collect the electrical energy converted by the power generation unit (100); The support part (400) is connected to the control part (200) and the collection part (300).

2. The HJT battery module according to claim 1, characterized in that, The control unit (200) includes a mounting frame (210), a telescopic component (220), a drive rod (230), and a drive component (240). The mounting frame (210) and the drive component (240) are both mounted on the support unit (400). Multiple telescopic components (220) are symmetrically arranged along the central axis of the mounting frame (210), and the number of telescopic components (220) is twice the number of the second battery string (120). A mounting groove (211) is provided inside the mounting frame (210). The telescopic component (220)... 20) Installed in the mounting slot (211), the number of the drive rods (230) is the same as the number of the second battery string (120), the two ends of the drive rods (230) are fixedly connected to the corresponding two telescopic members (220), and the drive rods (230) are rotatably connected to the second battery string (120). One end of the power generation part (100) is rotatably connected to the mounting frame (210), and the drive rods (230) located at the other end of the power generation part (100) are driven connected to the drive member (240).

3. The HJT battery module according to claim 2, characterized in that, The telescopic component (220) includes a slider (221) and a spring (222). The slider (221) is slidably connected to the mounting groove (211). One end of the spring (222) is fixedly connected to the slider (221), and the other end of the spring (222) is fixedly connected to the slider (221) of another telescopic component (220).

4. An HJT battery module according to claim 2 or 3, characterized in that, The control unit (200) also includes a limiting member (250), which is mounted on the mounting frame (210) and fits against the inner side of the slider (221).

5. An HJT battery module according to claim 3, characterized in that, The included angle between the first battery string (110) and the second battery string (120) is α, and the range of α is 120°-175°.

6. An HJT battery module according to claim 5, characterized in that, The first battery string (110) and the second battery string (120) are electrically connected by wires.

7. An HJT battery module according to claim 6, characterized in that, The collection unit (300) includes a junction box (310), a photovoltaic inverter (320) and a protective cover (330) mounted on the support unit (400). The power generation unit (100) and the photovoltaic inverter (320) are both electrically connected to the junction box (310).

8. An HJT battery module according to claim 7, characterized in that, The protective cover (330) is provided with a heat dissipation vent (331), and the opening of the heat dissipation vent (331) faces downward.

9. An HJT battery module according to claim 8, characterized in that, The protective cover (330) is provided with a controller (500) installed on the support (400). A light direction sensor (600) is installed on the top of the protective cover (330). The light direction sensor (600) and the drive unit (240) are both electrically connected to the controller (500).

10. An HJT battery module according to claim 9, characterized in that, The support (400) includes a plurality of legs (410) rotatably mounted on the mounting frame (210) and a support frame (420) disposed on one side of the mounting frame (210). The drive unit (240), the junction box (310), the photovoltaic inverter (320), the protective cover (330) and the controller (500) are all mounted on the support frame (420).

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