A solar-powered smart wearable device

Abstract

This utility model relates to the field of solar wearable technology and provides a solar-powered smart wearable device, comprising: a device body with a power storage module; a wristband connected to the device body, the wristband having a mounting groove, the bottom of the mounting groove having a first conductive part and a second conductive part, the first conductive part and the second conductive part being electrically connected to the power storage module respectively; a photovoltaic module mounted in the mounting groove, the photovoltaic module comprising: a battery unit, the battery unit including at least one crystalline silicon solar cell; a back encapsulation layer disposed on the back of the battery unit, the back encapsulation layer having a first polarity lead and a second polarity lead, the first polarity lead being electrically connected to the positive terminal of the battery unit, the second polarity lead being electrically connected to the negative terminal of the battery unit, the first polarity lead and the second polarity lead respectively contacting the first conductive part and the second conductive part. This utility model's solar-powered smart wearable device can increase the power generation of the photovoltaic module.

Description

Technical Field

[0001] This utility model relates to the field of solar wearable technology, and in particular to a solar smart wearable device. Background Technology

[0002] With the development of photovoltaic power generation technology, photovoltaic cells are becoming smaller and smaller. The technology of integrating photovoltaic cells into wearable devices to power their batteries has been gradually adopted by many manufacturers. In people's daily lives, solar-powered smart wearable devices mainly include solar-powered smartwatches and solar-powered smart bracelets. These types of solar-powered smart wearable devices mainly consist of a main body, a wristband connected to the main body for wearing on the wrist, and a photovoltaic module for charging the battery inside the main body.

[0003] In related technologies, the photovoltaic module of a solar-powered smart wearable device is typically installed inside the device body. The photovoltaic module is electrically connected to the battery inside the device body to charge it. Because the device body needs to house numerous electronic components, the size of the photovoltaic module is limited. This limitation, imposed by other electronic components, results in a smaller photovoltaic module size, leading to a smaller light-receiving area. Consequently, the power generation of the photovoltaic module in the solar-powered smart wearable device is low, resulting in poor battery life and a tendency for the device to run out of power. Utility Model Content

[0004] This invention provides a solar-powered smart wearable device, aiming to solve the problem of low power generation from photovoltaic modules in existing solar-powered smart wearable devices.

[0005] This utility model is implemented as follows: it provides a solar-powered smart wearable device, comprising:

[0006] The main body of the equipment is equipped with a power storage module;

[0007] A wristband connected to the main body of the device, the wristband having a mounting groove, the bottom of the mounting groove having a first conductive part and a second conductive part, the first conductive part and the second conductive part being electrically connected to the energy storage module respectively; and

[0008] A photovoltaic module installed in the mounting slot, the photovoltaic module comprising:

[0009] A battery cell, the battery cell comprising at least one crystalline silicon solar cell; and

[0010] A back-side encapsulation layer is provided on the back side of the battery cell. The back-side encapsulation layer has a first polarity lead and a second polarity lead spaced apart from each other. The first polarity lead is electrically connected to the positive terminal of the battery cell, and the second polarity lead is electrically connected to the negative terminal of the battery cell.

[0011] Preferably, the crystalline silicon solar cell is a back-contact crystalline silicon solar cell; the crystalline silicon solar cell includes a first edge and a second edge disposed opposite to each other along a first direction, and the back side of the crystalline silicon solar cell includes a first polar grid disposed near the first edge and a second polar grid disposed near the second edge, the first polar grid and the second polar grid extending along a second direction, the second direction intersecting the first direction;

[0012] The first polarity lead-out portion contacts at least one first polarity main gate, and the second polarity lead-out portion contacts at least one second polarity main gate. The first polarity lead-out portion and the second polarity lead-out portion respectively contact the first conductive portion and the second conductive portion.

[0013] Preferably, the battery cell includes a plurality of crystalline silicon solar cells arranged sequentially along the first direction, and the first polarization grid and the second polarization grid of two adjacent crystalline silicon solar cells are arranged adjacent to each other along the first direction.

[0014] The front side of the back encapsulation layer is provided with a plurality of conductive layers that cooperate with the first polar main grid and the second polar main grid of the crystalline silicon solar cell. The conductive layers are located on both sides of the crystalline silicon solar cell along the first direction. The first polar main grid and the second polar main grid of two adjacent crystalline silicon solar cells along the first direction are simultaneously in contact with the corresponding conductive layers.

[0015] Preferably, the first polarity lead-out portion and the second polarity lead-out portion are respectively disposed at opposite ends of the back encapsulation layer, the first polarity lead-out portion surrounds one end face of the back encapsulation layer, and the second polarity lead-out portion surrounds the other end face of the back encapsulation layer.

[0016] Preferably, the back packaging layer is provided with through holes corresponding to the first polarity lead-out portion and the second polarity lead-out portion respectively, and the first polarity lead-out portion and the second polarity lead-out portion pass through the corresponding through holes respectively.

[0017] Preferably, the ratio of the distance from the first polar grid to the center of the crystalline silicon solar cell along the first direction to the distance from the center of the crystalline silicon solar cell to the first edge along the first direction is greater than or equal to 80%; and / or, the ratio of the distance from the second polar grid to the center of the crystalline silicon solar cell along the first direction to the distance from the center of the crystalline silicon solar cell to the second edge along the first direction is greater than or equal to 80%.

[0018] Preferably, the ratio of the distance from the first polar grid to the center of the crystalline silicon solar cell along the first direction to the distance from the center of the crystalline silicon solar cell to the first edge along the first direction is less than or equal to 98%; and / or, the ratio of the distance from the second polar grid to the center of the crystalline silicon solar cell to the distance from the center of the crystalline silicon solar cell to the second edge is less than or equal to 98%.

[0019] Preferably, the photovoltaic module is detachably installed in the mounting slot.

[0020] Preferably, the wristband is detachably connected to the device body; the device body is provided with a first conductive end and a second conductive end respectively connected to the energy storage module, and the wristband is provided with a third conductive end and a fourth conductive end respectively corresponding to the first conductive end and the second conductive end; the third conductive end is electrically connected to the first conductive part, and the fourth conductive end is electrically connected to the second conductive part; the first conductive end and the third conductive end can be detachably formed into electrical contact, and the second conductive end and the fourth conductive end can be detachably formed into electrical contact.

[0021] Preferably, the first conductive end and the second conductive end are conductive posts, and the third conductive end and the fourth conductive end are conductive holes that cooperate with the conductive posts; or, the first conductive end and the second conductive end are conductive holes, and the third conductive end and the fourth conductive end are conductive posts that cooperate with the conductive holes.

[0022] Preferred options also include:

[0023] A front encapsulation layer is disposed on the front side of the battery cell, the front encapsulation layer comprising only a front adhesive film, the front adhesive film comprising at least one of EVA film, PVB film, EPE film, EP film and POE film.

[0024] Preferably, the back encapsulation layer comprises only a back adhesive film, which includes at least one of EVA film, PVB film, EPE film, EP film and POE film.

[0025] Preferred options also include:

[0026] A front encapsulation layer disposed on the front side of the battery cell, the front encapsulation layer comprising:

[0027] The front adhesive film includes at least one selected from EVA film, PVB film, EPE film, EP film, and POE film; and

[0028] The front glass is disposed on the front adhesive film.

[0029] Preferably, the back packaging layer includes:

[0030] A back adhesive film disposed on the back of the battery cell, the back adhesive film comprising at least one of EVA film, PVB film, EPE film, EP film, and POE film; and

[0031] A back plate or back glass disposed on the back of the back adhesive film.

[0032] Preferably, the conductive layer is one or a combination of copper sheet, aluminum sheet, and tin sheet.

[0033] This utility model provides a solar-powered smart wearable device that uses a mounting slot on the wristband to install a photovoltaic module. The installation of the photovoltaic module is unaffected by the installation of electronic components within the main body of the device, thus facilitating a larger photovoltaic module size design and increasing its light-receiving area, thereby improving power generation and extending the device's battery life. Furthermore, the photovoltaic module includes a battery unit and a back-mounted encapsulation layer. The battery unit includes at least one crystalline silicon solar cell. Using crystalline silicon solar cells, compared to thin-film solar cells, results in higher conversion efficiency, increasing power generation while reducing costs, thus lowering the overall cost of the solar-powered smart wearable device. Additionally, the photovoltaic module uses a first polarity lead and a second polarity lead to respectively contact and conduct electricity with a first conductive part and a second conductive part. The photovoltaic module is simply placed flat in the mounting slot, allowing for easy connection between the module and the first and second conductive parts. This simple installation method facilitates mounting the photovoltaic module onto the wristband, resulting in a simple structure and low cost for the solar-powered smart wearable device. Attached Figure Description

[0034] Figure 1 A schematic diagram of a solar-powered smart wearable device provided for an embodiment of this utility model;

[0035] Figure 2 This is a schematic diagram of the structure of a solar-powered smart wearable device when the wristband does not contain a photovoltaic module, as provided in an embodiment of the present invention.

[0036] Figure 3A schematic diagram of the structure of a solar-powered smart wearable device with a photovoltaic module placed on its wristband, provided as an embodiment of this utility model;

[0037] Figure 4 A side view of the main body of a solar-powered smart wearable device provided for an embodiment of this utility model;

[0038] Figure 5 A cross-sectional schematic diagram of a photovoltaic module for a solar-powered smart wearable device provided in an embodiment of this utility model;

[0039] Figure 6 A cross-sectional view of the wristband of a solar-powered smart wearable device without a photovoltaic module, provided as an embodiment of this utility model;

[0040] Figure 7 A cross-sectional schematic diagram of a solar-powered smart wearable device with a photovoltaic module placed on its wristband, provided as an embodiment of this utility model;

[0041] Figure 8 A schematic diagram of a battery unit for a solar-powered smart wearable device provided in an embodiment of this utility model;

[0042] Figure 9 A schematic diagram of a crystalline silicon solar cell for a battery unit of a solar-powered smart wearable device provided in an embodiment of this utility model;

[0043] Figure 10 A schematic diagram of the back encapsulation layer of a photovoltaic module for a solar-powered smart wearable device provided in an embodiment of this utility model;

[0044] Figure 11 A cross-sectional schematic diagram of the back encapsulation layer of a photovoltaic module for a solar-powered smart wearable device provided in this embodiment of the present invention;

[0045] Figure 12 This is a schematic diagram showing a battery cell of a solar-powered smart wearable device placed on the back encapsulation layer, as provided in an embodiment of the present invention. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Examples of embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as limiting the present utility model. Furthermore, it should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0047] In the description of this utility model, it should be understood that the terms "upper", "lower", "back", "front", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0050] Please refer to Figures 1-8 This utility model embodiment provides a solar-powered smart wearable device 100, comprising:

[0051] Equipment body 1, the equipment body 1 is equipped with a power storage module 11;

[0052] The wristband 2, connected to the main body 1, has a mounting groove 21. The bottom of the mounting groove 21 has a first conductive part 22 and a second conductive part 23, which are electrically connected to the energy storage module 11.

[0053] The photovoltaic module 3 is installed in the mounting slot 21. The photovoltaic module 3 includes:

[0054] Battery cell 31, battery cell 31 includes at least one crystalline silicon solar cell 30; and

[0055] A back-side encapsulation layer 32 is provided on the back side of the battery cell 31. The back-side encapsulation layer 32 has a first polarity lead-out portion 321 and a second polarity lead-out portion 322 spaced apart. The first polarity lead-out portion 321 is electrically connected to the positive terminal of the battery cell 31, and the second polarity lead-out portion 322 is electrically connected to the negative terminal of the battery cell 31. The first polarity lead-out portion 321 and the second polarity lead-out portion 322 are respectively in contact with the first conductive portion 22 and the second conductive portion 23.

[0056] In this embodiment of the invention, the solar-powered smart wearable device can be a solar-powered smartwatch or a solar-powered smart bracelet. Specifically, the energy storage module 11 can be a battery. The specific structure of the device body 1 is not limited and can be flexibly configured according to the specific type of the solar-powered smart wearable device. For example, the device body 1 may further include a housing, a display screen disposed within the housing, and a circuit board electrically connected to the display screen. The energy storage module 11 serves as the power source for the device body 1, and is electrically connected to the circuit board to supply power to the device body 1.

[0057] In this embodiment of the invention, the wristband 2 is connected to the device body 1 and is worn on the wrist or other parts of the body. Specifically, the wristband 2 can be made of a flexible material. A mounting groove 21 on the wristband 2 is used to mount the photovoltaic module 3. The bottom of the mounting groove 21 has a first conductive part 22 and a second conductive part 23 electrically connected to the energy storage module 11. When the photovoltaic module 3 is installed in the mounting groove 21, the first polarity lead-out part 321 and the second polarity lead-out part 322 of the photovoltaic module 3 are in contact with the first conductive part 22 and the second conductive part 23, respectively. The crystalline silicon solar cell 30 of the photovoltaic module 3 generates current under sunlight. The current generated by the photovoltaic module 3 is led out from the first polarity lead-out part 321 and the second polarity lead-out part 322, and flows through the first conductive part 22 and the second conductive part 23 into the charging terminal of the energy storage module 11, thereby charging the energy storage module 11. The discharging terminal of the energy storage module 11 supplies power to the device body 1.

[0058] In this embodiment of the invention, the crystalline silicon solar cell 30 is specifically a back-contact crystalline silicon solar cell, but it can also be a double-sided contact crystalline silicon solar cell. The number of crystalline silicon solar cells 30 included in the battery unit 31 is not limited; for example, the number of crystalline silicon solar cells 30 can be set according to the charging voltage of the energy storage module 11. For example, the number of crystalline silicon solar cells 30 included in the battery unit 31 can be one, two, three, or more. The number of crystalline silicon solar cells 30 included in the battery unit 31 can be arranged in one column or multiple columns. Crystalline silicon solar cells 30 in different columns can be connected in parallel or in series, and there is no specific limitation.

[0059] The solar-powered smart wearable device provided in this embodiment of the invention installs a photovoltaic module 3 in the mounting slot 21 of the wristband 2. Since the wristband 2 is not affected by the installation of electronic components in the main body 1, it is convenient to increase the size design of the photovoltaic module 3, which is beneficial to increase the light-receiving area of ​​the photovoltaic module 3, thereby improving the power generation of the photovoltaic module 3 and enhancing the battery life of the solar-powered smart wearable device. Moreover, the photovoltaic module 3 of the solar-powered smart wearable device in this embodiment of the invention includes a battery unit 31 and a back encapsulation layer 32. The battery unit 31 includes at least one crystalline silicon solar cell 30. The photovoltaic module 3 uses crystalline silicon solar cells 30. Compared with solar thin-film batteries, crystalline silicon solar cells 30 have higher conversion efficiency, which can increase the power generation of the photovoltaic module 3 and achieve lower cost, thus reducing the cost of the solar-powered smart wearable device. In addition, a first polarity lead-out portion 321 and a second polarity lead-out portion 322 are provided at intervals on the back encapsulation layer 32. The first polarity lead-out portion 321 is electrically connected to the positive terminal of the battery unit 31, and the second polarity lead-out portion 322 is electrically connected to the negative terminal of the battery unit 31. The photovoltaic module 3 uses the first polarity lead-out portion 321 and the second polarity lead-out portion 322 to contact the first conductive portion 22 and the second conductive portion 23 respectively. The photovoltaic module 3 is laid flat in the mounting groove 21, so that the current of the photovoltaic module 3 can be led out to the first conductive portion 22 and the second conductive portion 23. The current is then led out to the energy storage module 11 through the first conductive portion 22 and the second conductive portion 23. The installation method of the photovoltaic module 3 is simple and easy to install on the wristband 2, which makes the structure of the solar smart wearable device simple and the implementation cost low.

[0060] The first conductive part 22 can be a one-piece structure or it can be composed of at least two separately arranged conductive parts that are electrically connected to each other. The first polarity lead-out part 3 is in contact with a certain conductive part of the first conductive part 22, which can also be understood as the first polarity lead-out part 3 being in contact with the first conductive part 22. The first conductive part 23 can be a one-piece structure or it can be composed of at least two separately arranged conductive parts that are electrically connected to each other. The second polarity lead-out part 4 is in contact with a certain conductive part of the first conductive part 23, which can also be understood as the second polarity lead-out part 4 being in contact with the first conductive part 23.

[0061] As an embodiment of this utility model, the wristband 2 is detachably connected to the device body 1; the device body 1 is provided with a first conductive end 101 and a second conductive end 102 respectively connected to the energy storage module 11, and the wristband 2 is provided with a third conductive end 203 and a fourth conductive end 204 respectively corresponding to the first conductive end 101 and the second conductive end 102. The third conductive end 203 is electrically connected to the first conductive part 22, and the fourth conductive end 204 is electrically connected to the second conductive part 23. The first conductive end 101 and the third conductive end 203 can be detachably formed to form an electrical contact, and the second conductive end 102 and the fourth conductive end 204 can be detachably formed to form an electrical contact.

[0062] In this embodiment, the first conductive end 101 and the second conductive end 102 are respectively connected to the charging end of the energy storage module 11, and the discharging end of the energy storage module 11 is connected to the circuit board of the device body 1. When the wristband 2 is connected to the device body 1, the first conductive part 22 is electrically connected to the first conductive end 101 through the third conductive end 203, and the second conductive part 23 is electrically connected to the second conductive end 102 through the fourth conductive end 204. When the wristband 2 is disassembled from the device body 1, the third conductive end 203 is separated from the first conductive end 101, and the fourth conductive end 204 is separated from the second conductive end 102, thereby facilitating the overall replacement of the wristband 2 and the photovoltaic module 3, and facilitating the circuit connection between the wristband 2 and the device body 1.

[0063] In one embodiment of this utility model, the first conductive end 101 and the second conductive end 102 are conductive posts, and the third conductive end 203 and the fourth conductive end 204 are conductive holes that cooperate with the conductive posts; or, the first conductive end 101 and the second conductive end 102 are conductive holes, and the third conductive end 203 and the fourth conductive end 204 are conductive posts that cooperate with the conductive holes.

[0064] In this embodiment, the first conductive end 101 and the second conductive end 102 can be conductive posts, and the third conductive end 203 and the fourth conductive end 204 can be conductive holes that mate with the conductive posts. The first conductive end 101 is inserted into the third conductive end 203, and the second conductive end 102 is inserted into the fourth conductive end 204. This facilitates the connection and disassembly of the first conductive end 101 and the second conductive end 102 with the third conductive end 203 and the fourth conductive end 204, respectively, thus facilitating the assembly and disassembly of the wristband 2 and the device body 1. Alternatively, the first conductive end 101 and the second conductive end 102 can be conductive holes, and the third conductive end 203 and the fourth conductive end 204 can be conductive posts that mate with the conductive holes. Similarly, this also facilitates the connection and disassembly of the first conductive end 101 and the second conductive end 102 with the third conductive end 203 and the fourth conductive end 204, respectively. Figure 4 This illustration shows the case where the first conductive end 101 and the second conductive end 102 are conductive holes. Figure 2 This illustration shows the case where the third conductive terminal 203 and the fourth conductive terminal 204 are conductive pillars.

[0065] In some other embodiments, the device body 1 and the wristband 2 may be connected in a non-detachable manner, and the first conductive part 22 and the second conductive part 23 may be directly connected to the energy storage module 11 to form an electrical connection.

[0066] Please refer to the reference. Figures 9-12As an embodiment of the present invention, the crystalline silicon solar cell 30 is a back-contact crystalline silicon solar cell; the crystalline silicon solar cell 30 includes a first edge 301 and a second edge 302 disposed opposite to each other along a first direction X, and the back side of the crystalline silicon solar cell 30 includes a first polar grid 303 disposed near the first edge 301 and a second polar grid 304 disposed near the second edge 302. The first polar grid 303 and the second polar grid 304 extend along a second direction Y, and the second direction Y intersects with the first direction X;

[0067] The first polarity lead-out portion 321 contacts at least one first polarity main gate 303, and the second polarity lead-out portion 322 contacts at least one second polarity main gate 304.

[0068] In this embodiment, the crystalline silicon solar cell 30 is a back-contact crystalline silicon solar cell. All grid lines of the back-contact crystalline silicon solar cell 30 are arranged on the crystalline silicon solar cell 30, and there are no grid lines on the front side of the crystalline silicon solar cell 30. The crystalline silicon solar cell 30 also includes several first polarity fine grids 305 and several second polarity fine grids 306. The first polarity fine grids 305 are connected to the first polarity main grid 303, and the second polarity fine grids 306 are connected to the second polarity main grid 304. The first polarity fine grids 305 and the second polarity fine grids 304 extend along the first polarity X direction, and the first polarity fine grids 305 and the second polarity fine grids 306 are alternately arranged along the second polarity Y direction. The first polarity main grid 303 collects the current from all the first polarity fine grids 305, and the second polarity main grid 304 collects the current from all the second polarity fine grids 306. One of the first polarity main grids 303 and the other of the second polarity main grid 304 is a positive main grid, and the other is a negative main grid. Preferably, the first direction X is perpendicular to the second direction Y. Of course, the first direction X and the second direction Y can also be non-perpendicular.

[0069] In this embodiment, the number of crystalline silicon solar cells 30 in the battery unit 31 can be one or more. When the battery unit 31 is a single crystalline silicon solar cell 30, the first polarization main grid 303 at one end of the crystalline silicon solar cell 30 in the battery unit 31 serves as the positive terminal of the battery unit 31, and the second polarization main grid 304 at the other end of the crystalline silicon solar cell 30 in the battery unit 31 serves as the negative terminal of the battery unit 31; the first polarization lead-out portion 321 contacts the first polarization main grid 303 at one end of the battery unit 31, and the second polarization lead-out portion 322 contacts the second polarization main grid 304 at the other end of the battery unit 31. The first polarity main grid 303 at one end of the crystalline silicon solar cell 30 of the battery unit 31 contacts the first polarity lead-out portion 321, realizing the electrical connection between the first polarity lead-out portion 321 and the positive terminal of the battery unit 31. The second polarity main grid 304 at the other end of the crystalline silicon solar cell 30 of the battery unit 31 contacts the second polarity lead-out portion 322, realizing the electrical connection between the second polarity lead-out portion 322 and the negative terminal of the battery unit 31. The first polarity lead-out portion 321 and the second polarity lead-out portion 322 then respectively contact the first conductive portion 22 and the second conductive portion 23 of the mounting groove 21, realizing the electrical connection between the photovoltaic module 3 and the first conductive portion 22 and the second conductive portion 23. The first conductive portion 22 and the second conductive portion 23 are respectively electrically connected to the energy storage module 11, thereby realizing the charging of the energy storage module 11 by the photovoltaic module 3.

[0070] When the battery unit 31 consists of multiple crystalline silicon solar cells 30, the multiple crystalline silicon solar cells 30 can be connected in series or in parallel to form the battery unit 31. The first polarity main grid 303 of the crystalline silicon solar cell 30 at one end of the battery unit 31 serves as the positive terminal of the battery unit 31, and the second polarity main grid 304 of the crystalline silicon solar cell 30 at the other end of the battery unit 31 serves as the negative terminal. The first polarity main grid 303 of the crystalline silicon solar cell 30 at one end of the battery unit 31 contacts the first polarity lead 321, realizing the electrical connection between the first polarity lead 321 and the positive terminal of the battery unit 31. The second polarity main grid 304 of the crystalline silicon solar cell 30 at the other end of the battery unit 31 contacts the second polarity lead 322, realizing the electrical connection between the second polarity lead 322 and the negative terminal of the battery unit 31. The first polarity lead-out portion 321 and the second polarity lead-out portion 322 then make corresponding contact with the first conductive portion 22 and the second conductive portion 23 of the mounting groove 21, respectively, to realize the electrical connection between the photovoltaic module 3 and the first conductive portion 22 and the second conductive portion 23. The first conductive portion 22 and the second conductive portion 23 are electrically connected to the energy storage module 11, thereby realizing the photovoltaic module 3 charging the energy storage module 11.

[0071] As an embodiment of the present invention, the battery cell 31 includes a plurality of crystalline silicon solar cells 30 arranged sequentially along the first direction X, and the first polar grid 303 and the second polar grid 304 of two adjacent crystalline silicon solar cells 30 along the first direction X are arranged adjacent to each other.

[0072] The front side of the back encapsulation layer 32 is provided with a plurality of conductive layers 323 that cooperate with the first polar main grid 303 and the second polar main grid 304 of the crystalline silicon solar cell 30. The conductive layers 323 are located on both sides of the crystalline silicon solar cell 30 along the first direction X. The first polar main grid 303 and the second polar main grid 304 of two adjacent crystalline silicon solar cells 30 along the first direction X are simultaneously in contact with the corresponding conductive layers 323.

[0073] In this embodiment, when the battery unit 31 includes multiple crystalline silicon solar cells 30 arranged sequentially along the first direction X, the first polarization main grid 303 and the second polarization main grid 304 of two adjacent crystalline silicon solar cells 30 along the first direction X are arranged adjacently. The first polarization main grid 303 and the second polarization main grid 304 of two adjacent crystalline silicon solar cells 30 along the first direction X are connected by corresponding conductive layers 323, thereby connecting multiple crystalline silicon solar cells 30 in series. Adjacent crystalline silicon solar cells 30 make contact with each other using edge main grids and conductive layers 323. Adjacent crystalline silicon solar cells 30 do not need to be connected by solder ribbons, which can improve the assembly efficiency of the battery unit 31. The number of conductive layers 323 is adapted to the number of crystalline silicon solar cells 30, with one conductive layer 323 corresponding to two adjacent crystalline silicon solar cells 30 along the first direction X.

[0074] In this battery unit 31, multiple crystalline silicon solar cells 30 can form a battery string. A battery string includes multiple crystalline silicon solar cells 30 arranged along the first direction X. Adjacent cells in the battery string are connected by a conductive layer 323 so that each cell in the battery string is connected in series. The first polarity main grid 303 of the crystalline silicon solar cell 30 at one end of the battery string is in contact with the first polarity lead-out portion 321, and the second polarity main grid 304 of the crystalline silicon solar cell 30 at the other end of the battery string is in contact with the second polarity lead-out portion 322.

[0075] As an embodiment of the present invention, the width of the conductive layer 323 along the first direction X is greater than the distance between the first polar main gate 303 and the second polar main gate 304 of two adjacent crystalline silicon solar cells 30 along the first direction X.

[0076] In this embodiment, the width of the conductive layer 323 along the first direction X is greater than the distance between the first polar main gate 303 and the second polar main gate 304 of two adjacent crystalline silicon solar cells 30 along the first direction X, so that the conductive layer 323 can fully contact the first polar main gate 303 and the second polar main gate 304, thereby achieving a stable connection between the two adjacent crystalline silicon solar cells 30.

[0077] In one embodiment of this utility model, the conductive layer 323 is one or a combination of copper sheet, aluminum sheet, and tin sheet. The method by which the conductive layer 323 is fixed to the back encapsulation layer 32 is not limited; the conductive layer 323 can be adhesively fixed to the back encapsulation layer 32. Furthermore, the conductive layer 323 can be made of the same material as the first polarity lead-out portion 321 and the second polarity lead-out portion 322, or they can be different materials.

[0078] Please refer to this again. Figure 11 As an embodiment of the present invention, the first polarity lead-out portion 321 includes a first contact portion 3211 located on the front side of the back encapsulation layer 32, a first connection portion 3212 connected to the first contact portion 3211, and a second contact portion 3213 located on the back side of the back encapsulation layer 32. The first contact portion 3211 contacts at least one first polarity main gate 303, and the second contact portion 3213 is used to contact the first conductive portion 22.

[0079] The second polarity lead-out portion 322 includes a third contact portion 3221 located on the front side of the back encapsulation layer 32, a second connection portion 3222 connected to the third contact portion 3221, and a fourth contact portion 3223 located on the back side of the back encapsulation layer 32. The third contact portion 3221 contacts at least one second polarity main gate 304, and the fourth contact portion 3223 is used to contact the second conductive portion 23.

[0080] In this embodiment, the front side of the back encapsulation layer 32 is the side of the back encapsulation layer 32 closest to the battery cell 31. The first contact portion 3211 of the first polarity lead-out portion 321 is used to contact the corresponding first polarity main gate 303, and the second contact portion 3213 is used to contact the first conductive portion 22, thereby achieving an electrical connection between the second contact portion 3213 and the first conductive portion 22. The third contact portion 3221 of the second polarity lead-out portion 322 is used to contact the corresponding second polarity main gate 304, and the fourth contact portion 3223 is used to contact the second conductive portion 23, thereby achieving an electrical connection between the fourth contact portion 3223 and the second conductive portion 23. By configuring the first polarity lead-out portion 321 and the second polarity lead-out portion 322 with the above structure, it is convenient to enable the first polarity lead-out portion 321 to simultaneously conduct the first conductive portion 22 and the first polarity main gate 303, and it is convenient to enable the second polarity lead-out portion 322 to simultaneously conduct the second conductive portion 23 and the second polarity main gate 304.

[0081] As an embodiment of the present invention, the first contact portion 3211, the first connecting portion 3212, and the second contact portion 3213 are integral structures; and / or, the third contact portion 3221, the second connecting portion 3222, and the fourth contact portion 3223 are integral structures.

[0082] In this embodiment, the first contact portion 3211, the first connecting portion 3212, and the second contact portion 3213 are integrally formed, specifically, they can be integrally stamped. The integral structure of the first contact portion 3211, the first connecting portion 3212, and the second contact portion 3213 gives the first polarity lead-out portion 321 good electrical conductivity. Similarly, the third contact portion 3221, the second connecting portion 3222, and the fourth contact portion 3223 can be integrally stamped, giving the second polarity lead-out portion 322 good electrical conductivity.

[0083] In another embodiment of the present invention, the first contact portion 3211, the first connecting portion 3212, and the second contact portion 3213 are separate structures; and / or, the third contact portion 3221, the second connecting portion 3222, and the fourth contact portion 3223 are separate structures.

[0084] In this embodiment, the first contact portion 3211, the first connecting portion 3212, and the second contact portion 3213 are processed separately and then connected to each other to form a whole, which facilitates the processing of the first polarity lead-out portion 321. The third contact portion 3221, the second connecting portion 3222, and the fourth contact portion 3223 are processed separately and then connected to each other to form a whole, which facilitates the processing of the second polarity lead-out portion 322.

[0085] As an embodiment of the present invention, the first polarity lead-out portion 321 and the second polarity lead-out portion 322 are respectively disposed at opposite ends of the back encapsulation layer 32, the first polarity lead-out portion 321 surrounds one end face of the back encapsulation layer 32, and the second polarity lead-out portion 322 surrounds the other end face of the back encapsulation layer 32.

[0086] In this embodiment, the first polarity lead-out portion 321 and the second polarity lead-out portion 322 are respectively disposed at opposite ends of the back encapsulation layer 32. The first polarity lead-out portion 321 surrounds one end face of the back encapsulation layer 32, and the second polarity lead-out portion 322 surrounds the other end face of the back encapsulation layer 32. This eliminates the need for drilling holes in the back encapsulation layer 32 and ensures the integrity of the back encapsulation layer 32, thus guaranteeing the encapsulation effect of the back encapsulation layer 32. Furthermore, the fact that the first polarity lead-out portion 321 surrounds one end face of the back encapsulation layer 32 and the second polarity lead-out portion 322 surrounds the other end face of the back encapsulation layer 32 enhances the fixing effect of the first polarity lead-out portion 321 and the second polarity lead-out portion 322, preventing them from falling off.

[0087] In another embodiment of this utility model, the back encapsulation layer 32 is provided with through holes corresponding to the first polarity lead-out portion 321 and the second polarity lead-out portion 322 respectively, and the first polarity lead-out portion 321 and the second polarity lead-out portion 322 pass through the corresponding through holes respectively.

[0088] In this embodiment, by providing through holes corresponding to the first polarity lead-out portion 321 and the second polarity lead-out portion 322 respectively in the back-side encapsulation layer 32, and bending the first polarity lead-out portion 321 through the corresponding through holes to form the first contact portion 3211 and the second contact portion 3213, the fixing effect of the first polarity lead-out portion 321 can be improved, preventing the first polarity lead-out portion 321 from falling off. Similarly, bending the first polarity lead-out portion 321 through the corresponding through holes to form the third contact portion 3221 and the fourth contact portion 3223 can improve the fixing effect of the second polarity lead-out portion 322, preventing the second polarity lead-out portion 322 from falling off.

[0089] As one embodiment of this utility model, the photovoltaic module 3 is detachably installed in the mounting slot 21.

[0090] In this embodiment, the photovoltaic module 3 is detachably installed in the mounting slot 21. This means that the photovoltaic module 3 can be freely disassembled without damaging the equipment structure, facilitating the maintenance and replacement of the photovoltaic module 3. The method by which the photovoltaic module 3 is detachably installed in the mounting slot 21 is not limited; for example, it can be fixed by a snap-fit ​​mechanism.

[0091] Please refer to Figure 9 and Figure 10 As an embodiment of the present invention, the first polarity lead-out portion 321 and the second polarity lead-out portion 322 are strip-shaped structures.

[0092] In this embodiment, the first polarity lead-out portion 321 and the second polarity lead-out portion 322 are strip-shaped structures continuously distributed along the second direction Y, which can ensure the contact area between the first polarity lead-out portion 321 and the first conductive portion 22 and the contact area between the second polarity lead-out portion 322 and the second conductive portion 23, thereby improving the contact reliability between the first polarity lead-out portion 321 and the second polarity lead-out portion 322 and the corresponding conductive portion.

[0093] In another embodiment of this utility model, the first polarity lead-out portion 321 and the second polarity lead-out portion 322 are multi-segment structures that are spaced apart sequentially along the second direction Y.

[0094] In this embodiment, the first polarity lead-out portion 321 and the second polarity lead-out portion 322 are multi-segment structures that are spaced apart sequentially along the second direction Y. Each segment structure can be a point structure, so that the first polarity lead-out portion 321 and the second polarity lead-out portion 322 are both discontinuous structures, which can reduce the amount of material used in the first polarity lead-out portion 321 and the second polarity lead-out portion 322 and reduce costs.

[0095] Please refer to Figure 9 As an embodiment of the present invention, the ratio of the distance L1 from the first polar main grid 303 to the center of the crystalline silicon solar cell 30 along the first direction X to the distance L2 from the center of the crystalline silicon solar cell 30 to the first edge 301 along the first direction X is greater than or equal to 80%; and / or, the ratio of the distance L3 from the second polar main grid 304 to the center of the crystalline silicon solar cell 30 along the first direction X to the distance L4 from the center of the crystalline silicon solar cell 30 to the second edge 302 along the first direction X is greater than or equal to 80%.

[0096] In this embodiment, the ratio of the distance from the first polarization main grid 303 to the center of the crystalline silicon solar cell 30 along the first direction X to the distance from the center of the crystalline silicon solar cell 30 to the first edge 301 along the first direction X is greater than or equal to 80%, facilitating the connection of the first polarization main grid 303 to the conductive layer 323 or the first polarization lead-out portion 321. Similarly, the ratio of the distance from the second polarization main grid 304 to the center of the crystalline silicon solar cell 30 along the first direction X to the distance from the center of the crystalline silicon solar cell 300 to the second edge 302 along the first direction X is greater than or equal to 80%, facilitating the connection of the second polarization main grid 304 to the conductive layer 323 or the second polarization lead-out portion 322. Specifically, the center of the crystalline silicon solar cell 30 is its geometric center, which is also its center of gravity.

[0097] As an embodiment of the present invention, the ratio of the distance L1 from the first polar main grid 303 to the center of the crystalline silicon solar cell 30 along the first direction X to the distance L2 from the center of the crystalline silicon solar cell 30 to the first edge 301 along the first direction X is less than or equal to 98%; and / or, the ratio of the distance L3 from the second polar main grid 304 to the center of the crystalline silicon solar cell 30 along the first direction X to the distance L4 from the center of the crystalline silicon solar cell 30 to the second edge 302 along the first direction X is less than or equal to 98%.

[0098] In this embodiment, the ratio of the distance from the first polar main grid 303 to the center of the crystalline silicon solar cell 30 along the first direction X to the distance from the center of the crystalline silicon solar cell 30 to the first edge 301 along the first direction X is less than or equal to 98%, which avoids the first polar main grid 303 being too close to the edge of the cell and can reduce the risk of microcracks in the crystalline silicon solar cell 30; the ratio of the distance from the second polar main grid 304 to the center of the crystalline silicon solar cell 30 along the first direction X to the distance from the center of the crystalline silicon solar cell 30 to the second edge 302 along the first direction X is less than or equal to 98%, which can further reduce the risk of microcracks in the crystalline silicon solar cell 30.

[0099] As one embodiment of this utility model, it also includes:

[0100] A front encapsulation layer 33 is provided on the front side of the battery cell 31. The front encapsulation layer 33 includes only a front adhesive film, which includes at least one of EVA film, PVB film, EPE film, EP film and POE film.

[0101] In this embodiment, since the front encapsulation layer 33 only includes the front adhesive film, the photovoltaic module 3 is lightweight, impact-resistant, and easy to carry, which is more conducive to the lightweight design of solar-powered smart wearable devices. PVB is polyvinyl butyral, EVA is ethylene-vinyl acetate copolymer, POE is polyolefin elastomer, EPE is EVA-POE-EVA, and EP is EVA-POE.

[0102] As an embodiment of the present invention, the back encapsulation layer 32 includes only the back adhesive film, which includes at least one of EVA film, PVB film, EPE film, EP film and POE film.

[0103] In this embodiment, since the back encapsulation layer 32 only includes the back adhesive film, the photovoltaic module 3 is lightweight, impact-resistant, and easy to carry, which is more conducive to the lightweighting of solar smart wearable devices.

[0104] In some other embodiments, the front encapsulation layer 33 may also include:

[0105] The front adhesive film includes at least one of EVA film, PVB film, EPE film, EP film, and POE film; and

[0106] Front glass is placed on top of the front film.

[0107] In this embodiment, the front encapsulation layer 33 is formed by stacking a front adhesive film and a front glass, which can further improve the protection effect on the front of the battery unit 31.

[0108] In another embodiment of this utility model, the back encapsulation layer 32 includes:

[0109] A back adhesive film disposed on the back side of the battery cell 31, the back adhesive film including at least one of EVA film, PVB film, EPE film, EP film and POE film; and

[0110] A back panel or back glass located on the back of the adhesive film.

[0111] In this embodiment, the back encapsulation layer 32 is formed by stacking a back adhesive film and a back plate or back glass, which can further improve the protection effect on the back of the battery unit 31.

[0112] As an embodiment of the present invention, the overlap area of ​​the conductive layer 323 with the first polar main gate 303 and the second polar main gate 304 has a length of 0.2 to 2 mm along the first direction X.

[0113] In this embodiment, the length of the overlap area between the conductive layer 323 and the first polar main gate 303 and the second polar main gate 304 along the first direction X is controlled to be 0.2 to 2 mm. This avoids excessively narrow overlap areas that could lead to excessive contact resistance and ensures reliable connection between the conductive layer 323 and the first polar main gate 303 and the second polar main gate 304. At the same time, it avoids excessively wide overlap areas that could increase the metal consumption of the main gate and the conductive layer 323, thereby helping to reduce costs.

[0114] As one embodiment of the present invention, the ratio of the total area of ​​the conductive layer 323 to the area of ​​the front side of the back encapsulation layer 32 is greater than 0.5% and less than 10%.

[0115] In this embodiment, the ratio of the total area of ​​the conductive layer 323 to the area of ​​the front side of the back packaging layer 32 is greater than 0.5% and less than 10%, so as to avoid the conductive layer 323 being too small and having too high resistance, which would affect the conversion efficiency, and also to keep the metal consumption cost low.

[0116] As one embodiment of the present invention, the width of the conductive layer 323 along the first direction X is greater than 0.2 mm and less than 10 mm.

[0117] In this embodiment, the width of the conductive layer 323 along the first direction X is greater than 0.2 mm and less than 10 mm. This avoids the conductive layer 323 being too narrow and having too high resistance, thus avoiding affecting the conversion efficiency of the battery assembly 100. It also avoids the conductive layer 323 being too wide, which would result in excessive metal consumption costs.

[0118] As one embodiment of this utility model, the solar-powered smart wearable device also includes:

[0119] The fixing device 205 is used to fix the photovoltaic module 3 in the mounting groove 21.

[0120] In this embodiment, a fixing device 205 for fixing the photovoltaic module 3 is provided in the mounting groove 21, so that the photovoltaic module 3 is stably fixed in the mounting groove 21. The fixing device 205 can be an adhesive dot or a clip.

[0121] In this embodiment, when the photovoltaic module 3 is installed into the mounting slot 21, if the fixing device 205 is an adhesive dot, the photovoltaic module 3 is fixed in the mounting slot 21 by the adhesive dot. If the fixing device 205 is a snap-fit, the photovoltaic module 3 is snapped into the mounting slot 21, thus stably fixing the photovoltaic module 3 in the mounting slot 21 and facilitating its installation and removal. In some embodiments, the fixing device 205 can also be a combination of snap-fit ​​and adhesive dot, which can further improve the fixing effect of the photovoltaic module 3 in the mounting slot 21. Of course, the fixing device can also be a screw or other fastener.

[0122] As an embodiment of the present invention, the solar-powered smart wearable device 100 also includes a transparent cover plate (not shown) disposed on the wristband 2, the transparent cover plate being disposed in the mounting groove 21 so that the photovoltaic module 3 is encapsulated in the mounting groove 21.

[0123] In the description of this specification, the references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0124] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A solar-powered smart wearable device, comprising: include: The main body of the equipment is equipped with a power storage module; A wristband connected to the main body of the device is provided with a mounting groove. The bottom of the mounting groove is provided with a first conductive part and a second conductive part. The first conductive part and the second conductive part are electrically connected to the energy storage module, respectively. and A photovoltaic module installed in the mounting slot, the photovoltaic module comprising: The battery cell includes at least one crystalline silicon solar cell; and A back-side encapsulation layer is provided on the back side of the battery cell. The back-side encapsulation layer has a first polarity lead and a second polarity lead spaced apart. The first polarity lead is electrically connected to the positive terminal of the battery cell, and the second polarity lead is electrically connected to the negative terminal of the battery cell. The first polarity lead and the second polarity lead are respectively in contact with the first conductive part and the second conductive part. 2.The solar-powered smart wearable device of claim 1, wherein, The crystalline silicon solar cell is a back-contact crystalline silicon solar cell; the crystalline silicon solar cell includes a first edge and a second edge disposed opposite to each other along a first direction, and the back side of the crystalline silicon solar cell includes a first polar grid disposed near the first edge and a second polar grid disposed near the second edge, the first polar grid and the second polar grid extending along a second direction, the second direction intersecting the first direction; The first polarity lead-out is in contact with at least one first polarity main gate, and the second polarity lead-out is in contact with at least one second polarity main gate. 3.The solar-powered smart wearable device of claim 2, wherein, The battery cell includes a plurality of crystalline silicon solar cells arranged sequentially along the first direction, wherein the first polar grid and the second polar grid of two adjacent crystalline silicon solar cells are arranged adjacent to each other along the first direction. The front side of the back encapsulation layer is provided with a plurality of conductive layers that cooperate with the first polar main grid and the second polar main grid of the crystalline silicon solar cell. The conductive layers are located on both sides of the crystalline silicon solar cell along the first direction. The first polar main grid and the second polar main grid of two adjacent crystalline silicon solar cells along the first direction are simultaneously in contact with the corresponding conductive layers.

4. The solar-powered smart wearable device of claim 1, wherein, The first polarity lead and the second polarity lead are respectively disposed at opposite ends of the back encapsulation layer. The first polarity lead wraps around one end face of the back encapsulation layer, and the second polarity lead wraps around the other end face of the back encapsulation layer.

5. The solar-powered smart wearable device of claim 1, wherein, The back packaging layer is provided with through holes corresponding to the first polarity lead-out portion and the second polarity lead-out portion respectively, and the first polarity lead-out portion and the second polarity lead-out portion pass through the corresponding through holes respectively. 6.The solar-powered smart wearable device of claim 2, wherein, The ratio of the distance from the first polar grid to the center of the crystalline silicon solar cell along the first direction to the distance from the center of the crystalline silicon solar cell to the first edge along the first direction is greater than or equal to 80%; and / or, the ratio of the distance from the second polar grid to the center of the crystalline silicon solar cell along the first direction to the distance from the center of the crystalline silicon solar cell to the second edge along the first direction is greater than or equal to 80%. 7.The solar-powered smart wearable device of claim 6, wherein, The ratio of the distance from the first polar grid to the center of the crystalline silicon solar cell along the first direction to the distance from the center of the crystalline silicon solar cell to the first edge along the first direction is less than or equal to 98%; and / or, the ratio of the distance from the second polar grid to the center of the crystalline silicon solar cell along the first direction to the distance from the center of the crystalline silicon solar cell to the second edge along the first direction is less than or equal to 98%.

8. The solar-powered smart wearable device of claim 1, wherein, The photovoltaic module can be detachably installed in the mounting slot.

9. The solar-powered smart wearable device of claim 1, wherein, The wristband is detachably connected to the main body of the device; the main body of the device is provided with a first conductive end and a second conductive end respectively connected to the energy storage module; the wristband is provided with a third conductive end and a fourth conductive end respectively corresponding to the first conductive end and the second conductive end; the third conductive end is electrically connected to the first conductive part; the fourth conductive end is electrically connected to the second conductive part; the first conductive end and the third conductive end can be detachably formed into electrical contact; the second conductive end and the fourth conductive end can be detachably formed into electrical contact. 10.The solar-powered smart wearable device of claim 9, wherein, The first conductive end and the second conductive end are conductive posts, and the third conductive end and the fourth conductive end are conductive holes that mate with the conductive posts; or, the first conductive end and the second conductive end are conductive holes, and the third conductive end and the fourth conductive end are conductive posts that mate with the conductive holes.

11. The solar-powered smart wearable device of claim 1, wherein, Also includes: A front encapsulation layer is disposed on the front side of the battery cell, the front encapsulation layer comprising only a front adhesive film, the front adhesive film comprising at least one of EVA film, PVB film, EPE film, EP film and POE film. 12.The solar-powered smart wearable device of claim 11, wherein, The back-side encapsulation layer comprises only a back-side adhesive film, which includes at least one of EVA film, PVB film, EPE film, EP film, and POE film.

13. The solar-powered smart wearable device according to claim 1, characterized in that, Also includes: A front encapsulation layer disposed on the front side of the battery cell, the front encapsulation layer comprising: The front adhesive film includes at least one of EVA film, PVB film, EPE film, EP film and POE film; and The front glass is disposed on the front adhesive film.

14. The solar-powered smart wearable device according to claim 1 or 13, characterized in that, The back packaging layer includes: A back adhesive film disposed on the back of the battery cell, the back adhesive film comprising at least one of EVA film, PVB film, EPE film, EP film, and POE film; and A back plate or back glass disposed on the back of the back adhesive film.

15. The solar-powered smart wearable device according to claim 3, characterized in that, The conductive layer is one or a combination of copper, aluminum, and tin sheets.

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