Optical storage integrated assembly

Abstract

The present disclosure relates to the present scheme provides a kind of light storage integrated assembly, including photovoltaic module, energy storage battery and sealing adhesive film, photovoltaic module has light receiving surface and back light surface, energy storage battery is electrically connected with photovoltaic module and is set to the back light surface of photovoltaic module, sealing adhesive film is wrapped in the outer periphery of energy storage battery, and is connected to photovoltaic module by laminating process.The above technical scheme, on the one hand, under the action of sealing adhesive film, energy storage battery and photovoltaic module can be integrated into one whole, compared with the setting of energy storage battery and photovoltaic module is separated, on the one hand, the required layout area of energy storage battery and photovoltaic module is reduced, on the other hand, the wire harness for connecting energy storage battery and photovoltaic module is also shortened, while reducing production and construction cost, it is also more convenient for maintenance personnel to overhaul and maintain energy storage battery and photovoltaic module.

Description

Technical Field

[0001] This disclosure relates to the field of photovoltaic power generation technology, and more specifically, to an integrated photovoltaic and energy storage module. Background Technology

[0002] Photovoltaic power generation is widely used in residential and commercial buildings, industrial facilities, and large-scale photovoltaic power plants. With technological advancements and cost reductions, photovoltaic power generation has developed rapidly and has become one of the important clean energy sources.

[0003] In related technologies, photovoltaic modules and energy storage batteries used to store the electrical energy converted by the photovoltaic modules are generally set up separately. That is, the photovoltaic modules and energy storage batteries are two separate power station systems. In this case, during the construction of the above-mentioned device, two sites need to be applied for, and the construction and subsequent maintenance of the power station need to be carried out separately, which increases the cost of energy storage. Summary of the Invention

[0004] The purpose of this disclosure is to provide an integrated photovoltaic and energy storage module to solve the technical problems existing in related technologies.

[0005] To achieve the above objectives, this disclosure provides an integrated photovoltaic and energy storage module, including a photovoltaic module, an energy storage battery, and a sealing film. The photovoltaic module has a light-receiving surface and a backlighting surface. The energy storage battery is electrically connected to the photovoltaic module and is attached to the backlighting surface of the photovoltaic module. The sealing film is wrapped around the outer periphery of the energy storage battery and is connected to the photovoltaic module through a lamination process.

[0006] Optionally, the sealing film includes a side sealing film and a bottom sealing film. The energy storage battery has a top wall that is in contact with the backlight surface, a bottom wall that is away from the top wall, and a side wall located between the top wall and the bottom wall. The side sealing film is arranged around the circumference of the energy storage battery and wraps around the outer periphery of the side wall. The bottom sealing film is in contact with the bottom wall of the energy storage battery.

[0007] Optionally, the integrated photovoltaic and energy storage module further includes a first adhesive film, which is connected between the bottom sealing film and the bottom wall of the energy storage battery.

[0008] Optionally, the integrated photovoltaic and energy storage module further includes a circuit control module, through which the energy storage battery is electrically connected to the photovoltaic module.

[0009] Optionally, the circuit control module includes a control circuit board, an input terminal, an electrical connection terminal, and an output terminal. The input terminal, electrical connection terminal, and output terminal are respectively electrically connected to the control circuit board. The photovoltaic module is electrically connected to the control circuit board through the input terminal, the energy storage battery is electrically connected to the control circuit board through the electrical connection terminal, and the output terminal is used to electrically connect to the electrical equipment. The control circuit board can control the input terminal to conduct with the electrical connection terminal when the energy storage battery is not fully charged; The control circuit board can disconnect the input terminal from the electrical connection terminal and connect the input terminal to the output terminal when the energy storage battery is fully charged. The control circuit board can control the electrical connection terminal to be connected to the output terminal when the photovoltaic module is not generating electricity.

[0010] Optionally, the photovoltaic-storage integrated module further includes a diode connected between the photovoltaic module and the circuit control module, so that the current in the photovoltaic module flows unidirectionally toward the circuit control module.

[0011] Optionally, the energy storage battery includes a busbar and multiple energy storage units, the multiple energy storage units are connected in series or in parallel and connected to the photovoltaic module through the busbar, and the multiple energy storage units are stacked along the thickness direction of the photovoltaic module.

[0012] Optionally, each of the energy storage units includes a positive electrode structure, a negative electrode structure, and an electrolyte, wherein the electrolyte is disposed between the positive electrode structure and the negative electrode structure.

[0013] Optionally, each of the positive electrode structures includes a positive electrode substrate, a positive electrode tab, and a positive electrode material layer, wherein the positive electrode tab is electrically connected to the positive electrode substrate, and the positive electrode material layer is attached to at least one large surface of the positive electrode substrate; Each of the negative electrode structures includes a negative electrode substrate, a negative electrode tab, and a negative electrode material layer. The negative electrode tab is electrically connected to the negative electrode substrate, and the negative electrode material layer is attached to at least one large surface of the negative electrode substrate.

[0014] Optionally, the positive electrode material layer is disposed on both large surfaces of the positive electrode substrate located between the two negative electrode substrates; The negative electrode material layer is disposed on both large surfaces of the negative electrode substrate located between the two positive electrode substrates.

[0015] Through the above technical solution, the energy storage battery is electrically connected to the photovoltaic module and attached to the back surface of the photovoltaic module. The sealant film is wrapped around the outer periphery of the energy storage battery through a lamination process. On the one hand, the sealant film enables the energy storage battery and the photovoltaic module to be integrated into a whole. Compared with setting the energy storage battery and the photovoltaic module separately, it reduces the required layout area of ​​the energy storage battery and the photovoltaic module. On the other hand, it also shortens the wiring harness used to connect the energy storage battery and the photovoltaic module. While reducing production and construction costs, it also makes it easier for operation and maintenance personnel to inspect and maintain the energy storage battery and the photovoltaic module.

[0016] In addition, the sealing film wrapped around the energy storage battery can also provide a good sealing effect, thereby preventing external moisture from entering the interior of the energy storage battery and improving the stability and service life of the energy storage battery.

[0017] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a cross-sectional view of an integrated photovoltaic and energy storage module provided in an exemplary embodiment of this disclosure; Figure 2 This is a cross-sectional view of the energy storage unit of an integrated photovoltaic and energy storage module provided in an exemplary embodiment of this disclosure; Figure 3 This disclosure provides a perspective view of an energy storage battery for an integrated photovoltaic and energy storage module according to an exemplary embodiment.

[0019] Explanation of reference numerals in the attached figures 1-Photovoltaic module; 11-Front cover plate; 12-Back sheet; 13-Photovoltaic cell; 2-Energy storage battery; 21-Busbar; 22-Energy storage unit; 221-Positive electrode structure; 2211-Positive electrode substrate; 2212-Positive electrode tab; 2213-Positive electrode material layer; 222-Negative electrode structure; 2221-Negative electrode substrate; 2222-Negative electrode tab; 2223-Negative electrode material layer; 223-Electrolyte; 23-Separator; 3-Sealing film; 31-Side sealing film; 32-Bottom sealing film; 4-First adhesive film; 5-Circuit control module; 51-Circuit board; 52-Input terminal; 53-Electrical connection terminal; 54-Output terminal; 6-Diode; 7-Second adhesive film. Detailed Implementation

[0020] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0021] In this disclosure, unless otherwise stated, directional terms such as "up," "down," "left," and "right" are used to indicate orientation or positional relationships only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or a specific orientation structure and operation, and therefore should not be construed as a limitation of this disclosure. The terms "inner" and "outer" refer to the inner and outer contours of the corresponding structures.

[0022] Additionally, it should be noted that the terms used, such as "first" and "second," are used to distinguish one element from another and do not indicate sequence or importance. Furthermore, in the description referring to the accompanying drawings, the same reference numerals in different drawings denote the same element.

[0023] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connect," "link," and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0024] refer to Figures 1 to 3 As shown, this disclosure provides an integrated photovoltaic and energy storage module, including a photovoltaic module 1, an energy storage battery 2, and a sealing film 3. The photovoltaic module 1 has a light-receiving surface and a back-lighting surface. The energy storage battery 2 is electrically connected to the photovoltaic module 1 and is attached to the back-lighting surface of the photovoltaic module 1. The sealing film 3 is wrapped around the outer periphery of the energy storage battery 2 and is connected to the photovoltaic module 1 through a lamination process.

[0025] Through the above technical solution, the energy storage battery 2 is electrically connected to the photovoltaic module 1 and attached to the back surface of the photovoltaic module 1. The sealing film 3 is wrapped around the outer periphery of the energy storage battery 2 through a lamination process. On the one hand, under the action of the sealing film 3, the energy storage battery 2 and the photovoltaic module 1 can be integrated into a whole. Compared with setting the energy storage battery 2 and the photovoltaic module 1 separately, on the one hand, the required arrangement area of ​​the energy storage battery 2 and the photovoltaic module 1 is reduced. On the other hand, the wiring harness used to connect the energy storage battery 2 and the photovoltaic module 1 is shortened. While reducing production and construction costs, it is also more convenient for operation and maintenance personnel to inspect and maintain the energy storage battery 2 and the photovoltaic module 1.

[0026] In addition, the sealing film 3 wrapped around the energy storage battery 2 can also provide a good sealing effect for the energy storage battery 2, thereby preventing external moisture from entering the interior of the energy storage battery 2 and improving the stability and service life of the energy storage battery 2.

[0027] When fixing the above-mentioned sealing film 3 by lamination, the hot pressing temperature shall not exceed 135°C, the time shall be 25 minutes, and the vacuum pressure shall be -20 kPa.

[0028] It should be noted that, in order to facilitate heat dissipation of the energy storage battery 2, the side of the energy storage battery 2 that is away from the photovoltaic panel can be directly in contact with the ground. In this way, during the charging and discharging process, the heat of the energy storage battery 2 can be directly transferred to the outside atmosphere, which has a better heat dissipation effect and reduces the safety risk of thermal runaway of the energy storage battery 2.

[0029] To further improve the sealing effect of the aforementioned energy storage battery 2, such as Figure 1 As shown, in one embodiment provided in this disclosure, the sealing film 3 includes a side sealing film 31 and a bottom sealing film 32. The energy storage battery 2 has a top wall that is attached to the backlight surface, a bottom wall that is away from the top wall, and a side wall located between the top wall and the bottom wall. The side sealing film 31 is arranged around the circumference of the energy storage battery 2 and wraps around the outer periphery of the side wall, and the bottom sealing film 32 is attached to the bottom wall of the energy storage battery 2. In this way, the side sealing film 31 and the bottom sealing film 32 can be manufactured separately, thereby reducing manufacturing difficulty and production cost, and also making it easier to assemble the side sealing film 31 and the bottom sealing film 32. In actual operation, the side sealing film 31 wrapped around the outer periphery of the side wall of the energy storage battery 2 can block moisture from the side, and similarly, the bottom sealing film 32 attached to the bottom wall of the energy storage battery 2 can block moisture from the bottom, thereby ensuring that the energy storage battery 2 is in a dry and sealed environment and improving the stability of the energy storage battery 2 during operation.

[0030] Furthermore, such as Figure 1 As shown, the photovoltaic-storage integrated module may further include a first adhesive film 4. The first adhesive film 4 is connected between the bottom sealing film 32 and the bottom wall of the energy storage battery 2. The first adhesive film 4, which is bonded between the bottom sealing film 32 and the bottom wall of the energy storage battery 2, can make the bottom sealing film 32 adhere tightly to the bottom wall of the energy storage battery 2, thereby further improving the sealing and waterproofing effect of the energy storage battery 2.

[0031] This disclosure does not limit the specific material or composition of the bottom sealing film 32, as long as it can achieve the functions of sealing the energy storage battery 2 and blocking moisture. For example, in an exemplary embodiment provided in this disclosure, the bottom sealing film 32 is an aluminum-plastic film. Aluminum-plastic film has good gas, moisture, light blocking, fire resistance and corrosion resistance properties, and can be used in a variety of environments. In addition, aluminum-plastic film is lighter and has a lower density than other materials such as metal plates, which facilitates transportation and installation, and can effectively reduce the overall weight of the photovoltaic-storage integrated module.

[0032] In the embodiments provided in this disclosure, the aluminum-plastic film may include an outer layer, a middle layer and an inner layer. The outer layer is a nylon layer, the middle layer is an aluminum foil layer, and the inner layer is an encapsulation and insulation layer. The encapsulation and insulation layer may be made of polypropylene.

[0033] Similarly, the side sealing film 31 can be made of flexible or rigid materials. In one embodiment provided in this disclosure, the side sealing film 31 can be made of butyl rubber.

[0034] In addition, the photovoltaic module 1 also includes a front cover plate 11, a back sheet 12 and a photovoltaic cell 13. The front cover plate 11 can be made of glass or a composite polymer material, while the back sheet 12 can be made of glass or a polymer composite board.

[0035] To further improve the connection stability between the energy storage battery 2 and the photovoltaic module 1, such as Figure 1 As shown, the above-mentioned photovoltaic-storage integrated module may further include a second adhesive film 7. One side of the second adhesive film 7 is bonded to the backplate 12 of the photovoltaic module 1, and the other side of the second adhesive film 7 is bonded to the side of the energy storage battery 2 near the backplate 12 of the photovoltaic module 1. The second adhesive film 7 can fix and limit the energy storage battery 2, improve the connection stability between the energy storage battery 2 and the photovoltaic module 1, and thus avoid relative displacement between the energy storage battery 2 and the photovoltaic module 1 during the operation of the photovoltaic panel.

[0036] The present disclosure does not limit the specific type and material of the adhesive film. For example, the adhesive film may be made of EVA (ethylene-vinyl acetate copolymer), POE (polyolefin elastomer), EVB (ethylene-vinyl acetate-butene copolymer), PVB (polyvinyl butyral), EPE (expanded polyethylene) or blends thereof.

[0037] Optionally, such as Figure 1 As shown, the integrated photovoltaic and energy storage module also includes a circuit control module 5, through which the energy storage battery 2 is electrically connected to the photovoltaic module 1. This circuit control module 5 can regulate the electrical energy conducted from the photovoltaic module 1 to the energy storage battery 2, thereby ensuring stable, orderly, and efficient energy transmission.

[0038] Optionally, such as Figure 1 As shown, the circuit control module 5 includes a control circuit board 51, an input terminal 52, an electrical connection terminal 53, and an output terminal 54. The input terminal 52, the electrical connection terminal 53, and the output terminal 54 are electrically connected to the control circuit board 51. The photovoltaic module 1 is electrically connected to the control circuit board 51 through the input terminal 52, and the energy storage battery 2 is electrically connected to the control circuit board 51 through the electrical connection terminal 53. The output terminal 54 is used to connect to electrical equipment. The control circuit board 51 can control the input terminal 52 and the electrical connection terminal 53 to conduct when the energy storage battery 2 is not fully charged. The control circuit board 51 can control the input terminal 52 and the electrical connection terminal 53 to disconnect and control the input terminal 52 and the output terminal 54 to conduct when the energy storage battery 2 is fully charged. The control circuit board 51 can control the electrical connection terminal 53 and the output terminal 54 to conduct when the photovoltaic module 1 is not generating electricity.

[0039] Specifically, by setting up the aforementioned circuit control module 5, which includes a control circuit board 51, an input terminal 52, an electrical connection terminal 53, and an output terminal 54, when the photovoltaic module 1 is generating electricity normally and the energy storage battery 2 is not fully charged, the control circuit board 51 can control the input terminal 52 connected to the photovoltaic module 1 and the electrical connection terminal 53 connected to the energy storage battery 2 to be connected. At this time, the current converted by the photovoltaic module 1 can enter the control circuit board 51 through the input terminal 52 and then flow into the energy storage battery 2 through the electrical connection terminal 53. When the energy storage battery 2 is fully charged, in order to avoid wasting electrical energy, the control circuit board 51 can control the connection between the input terminal 52 and the output terminal 54. Circuit board 51 can disconnect the connection between input terminal 52 and electrical connection terminal 53, and connect input terminal 52 and output terminal 54. At this time, the electrical energy converted by photovoltaic module 1 can directly supply power to the electrical equipment connected to output terminal 54 through output terminal 54. When photovoltaic module 1 does not generate electricity (such as in the nighttime environment or when photovoltaic module 1 is shut down for maintenance), control circuit board 51 can connect electrical connection terminal 53 and output terminal 54. At this time, the electrical energy stored in energy storage battery 2 can flow into the electrical equipment through electrical connection terminal 53, control circuit board 51 and output terminal 54 in sequence to meet the power demand of the electrical equipment.

[0040] In the embodiments provided in this disclosure, the circuit control module 5 may further include a voltage regulator module. The voltage regulator module can automatically adjust the output voltage according to the load change, ensuring that a stable power supply can be provided under different working conditions, reducing energy loss, and protecting the energy storage battery 2 connected to it from damage caused by overvoltage, undervoltage and voltage fluctuations, thereby extending the service life of the energy storage battery 2.

[0041] Optionally, such as Figure 1 As shown, the energy storage battery 2 may also include a diode 6, which is connected between the photovoltaic module 1 and the circuit control module 5 to ensure that the current in the photovoltaic module 1 flows unidirectionally towards the circuit control module 5. That is, the current can only flow from the photovoltaic module 1 to the circuit control module 5, and then to the energy storage module or other electrical equipment connected to the circuit control module 5, thereby avoiding the problem of reverse discharge of the electrical energy in the energy storage battery 2 to the photovoltaic module 1 when the photovoltaic module 1 is not generating electricity (such as at night).

[0042] Optionally, such as Figure 2 , Figure 3 As shown, the energy storage battery 2 may include a busbar 21 and multiple energy storage units 22. The multiple energy storage units 22 are connected in series or in parallel and connected to the photovoltaic module 1 through the busbar 21. The multiple energy storage units 22 are stacked along the thickness direction of the photovoltaic module 1. That is, the multiple energy storage units 22 can be connected in parallel, or in series, or in a series-then-parallel manner, depending on the specific layout scenario. This disclosure does not impose any restrictions on this.

[0043] Furthermore, since multiple energy storage units 22 are stacked along the thickness direction of the photovoltaic module 1, the total capacity of the energy storage battery 2 can be increased while minimizing the space occupied by multiple energy storage units 22, making it easier to arrange the energy storage battery 2.

[0044] This disclosure does not limit the specific type and energy storage method of the energy storage battery 2. For example, in an exemplary embodiment provided in this disclosure, the energy storage battery 2 can be a solid-state lithium-ion battery or a sodium-ion battery.

[0045] Optionally, such as Figure 2 As shown, each energy storage unit 22 includes a positive electrode structure 221, a negative electrode structure 222, and an electrolyte 223, with the electrolyte 223 disposed between the positive electrode structure 221 and the negative electrode structure 222. Thus, in an embodiment where the energy storage battery 2 is a solid-state lithium-ion battery, during charging, the positive electrode structure 221 (typically a lithium metal oxide, such as LiCoO2) releases lithium ions, which then move to the negative electrode structure 222 (typically graphite or other carbon materials) via the electrolyte (the liquid medium inside the battery).

[0046] Optionally, such as Figure 2 As shown, each positive electrode structure 221 includes a positive electrode substrate 2211, a positive electrode tab 2212, and a positive electrode material layer 2213. The positive electrode tab 2212 is electrically connected to the positive electrode substrate 2211, and the positive electrode material layer 2213 is attached to at least one large surface of the positive electrode substrate 2211. Each negative electrode structure 222 includes a negative electrode substrate 2221, a negative electrode tab 2222, and a negative electrode material layer 2223. The negative electrode tab 2222 is electrically connected to the negative electrode substrate 2221, and the negative electrode material layer 2223 is attached to at least one large surface of the negative electrode substrate 2221. In the aforementioned embodiment of the energy storage battery 2 including busbar 21 and multiple energy storage units 22, the positive electrode tab 2212 of each positive electrode structure 221 is connected to the positive electrode connection section of the busbar 21, and the negative electrode tab 2222 of each negative electrode structure 222 is connected to the negative electrode connection section of the busbar 21, forming a unified voltage and current output.

[0047] Furthermore, in the embodiment where the energy storage battery 2 is a lithium-ion battery, the aforementioned positive electrode material layer 2213 can be made of lithium iron phosphate, the negative electrode material can be made of graphite, the positive electrode substrate 2211 and the positive electrode tab 2212 are aluminum foil, the negative electrode substrate 2221 and the negative electrode tab 2222 are copper foil, and a separator 23 is also provided between the positive electrode structure 221 and the negative electrode structure 222. The separator 23 is usually made of materials such as polyethylene (PE) or polypropylene (PP). The function of the separator 23 is to prevent the positive electrode structure 221 and the negative electrode structure 222 from directly contacting each other and causing a short circuit, while allowing lithium ions to pass through.

[0048] Optionally, such as Figure 2 As shown, a positive electrode material layer 2213 is provided on both large surfaces of the positive electrode substrate 2211 located between the two negative electrode substrates 2221; a negative electrode material layer 2223 is provided on both large surfaces of the negative electrode substrate 2221 located between the two positive electrode substrates 2211. In an embodiment where multiple energy storage units 22 are stacked, by providing a positive electrode material layer 2213 on both large surfaces of a positive electrode substrate 2211 located between two negative electrode substrates 2221, the positive electrode substrate 2211 located between the two negative electrode substrates 2221 can simultaneously serve as the positive electrode structure 221 of two battery units. That is, the positive electrode substrate 2211 and the positive electrode material layer 2213 disposed on one large surface of the positive electrode substrate 2211 can together with the negative electrode substrate 2221, negative electrode material layer 2223 and electrolyte 223 located on one side to form one energy storage unit 22. At the same time, the positive electrode substrate 2211 and the positive electrode material layer 2213 disposed on the other large surface of the positive electrode substrate 2211 can together with the negative electrode substrate 2221, negative electrode material layer 2223 and electrolyte 223 located on the other side to form a second energy storage unit 22. Similarly, for a negative electrode substrate 2211 located between two positive electrode substrates 2221, the positive electrode material layer 2223 and electrolyte 223 can also be stacked. Negative electrode material layers 2223 are provided on both large surfaces of the base 2221, enabling the negative electrode base 2221 located between the two positive electrode bases 2211 to simultaneously serve as the negative electrode structure 222 of two energy storage units 22. That is, the negative electrode base 2221 and the negative electrode material layer 2223 provided on one large surface of the negative electrode base 2221 can together with the positive electrode base 2211, the positive electrode material layer 2213 and the electrolyte 223 located on one side to form an energy storage unit 22. At the same time, the negative electrode base 2221 and the negative electrode material layer 2223 provided on the other large surface of the negative electrode base 2221 can together with the positive electrode base 2211, the positive electrode material layer 2213 and the electrolyte 223 located on the other side to form a second energy storage unit 22. This increases the utilization rate of the positive electrode structure 221 and the negative electrode structure 222 while keeping the number of positive electrode structures 221 and negative electrode structures 222 fixed, thereby increasing the total capacity of the energy storage battery 2.

[0049] For example, in one exemplary embodiment provided in this disclosure, the energy storage battery 2 may include a parallel structure of three positive electrode structures 221 and four negative electrode structures 222, with dimensions of 68mm*90mm, a sub-unit battery capacity of 600mAh, a voltage range of 2.5-3.6V, and a voltage plateau of 3.2V. Two sub-units are connected in parallel to form a battery pack with a capacity of 1200mAh and a voltage plateau of 3.2V. The battery packs are connected by nickel-coated copper busbars.

[0050] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0052] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A photovoltaic-storage integrated module, characterized in that, The device includes a photovoltaic module, an energy storage battery, and a sealing film. The photovoltaic module has a light-receiving surface and a backlighting surface. The energy storage battery is electrically connected to the photovoltaic module and is attached to the backlighting surface of the photovoltaic module. The sealing film is wrapped around the outer periphery of the energy storage battery and is connected to the photovoltaic module through a lamination process.

2. The integrated photovoltaic and energy storage module according to claim 1, characterized in that, The sealing film includes a side sealing film and a bottom sealing film. The energy storage battery has a top wall that is in contact with the backlight surface, a bottom wall that is away from the top wall, and a side wall located between the top wall and the bottom wall. The side sealing film is arranged around the circumference of the energy storage battery and wraps around the outer periphery of the side wall. The bottom sealing film is attached to the bottom wall of the energy storage battery.

3. The integrated photovoltaic and energy storage module according to claim 2, characterized in that, The integrated photovoltaic and energy storage module also includes a first adhesive film, which is connected between the bottom sealing film and the bottom wall of the energy storage battery.

4. The integrated photovoltaic and energy storage module according to any one of claims 1-3, characterized in that, The integrated photovoltaic and energy storage module also includes a circuit control module, through which the energy storage battery is electrically connected to the photovoltaic module.

5. The integrated photovoltaic and energy storage module according to claim 4, characterized in that, The circuit control module includes a control circuit board, an input terminal, an electrical connection terminal, and an output terminal. The input terminal, electrical connection terminal, and output terminal are respectively electrically connected to the control circuit board. The photovoltaic module is electrically connected to the control circuit board through the input terminal, the energy storage battery is electrically connected to the control circuit board through the electrical connection terminal, and the output terminal is used to electrically connect to the electrical equipment. The control circuit board can control the input terminal to conduct with the electrical connection terminal when the energy storage battery is not fully charged; The control circuit board can disconnect the input terminal from the electrical connection terminal and connect the input terminal to the output terminal when the energy storage battery is fully charged. The control circuit board can control the electrical connection terminal to be connected to the output terminal when the photovoltaic module is not generating electricity.

6. The integrated photovoltaic and energy storage module according to claim 4, characterized in that, The photovoltaic-storage integrated module also includes a diode connected between the photovoltaic module and the circuit control module, so that the current in the photovoltaic module flows unidirectionally toward the circuit control module.

7. The integrated photovoltaic and energy storage module according to any one of claims 1-3, characterized in that, The energy storage battery includes a busbar and multiple energy storage units. The multiple energy storage units are connected in series or in parallel and connected to the photovoltaic module through the busbar. The multiple energy storage units are stacked along the thickness direction of the photovoltaic module.

8. The integrated photovoltaic and energy storage module according to claim 7, characterized in that, Each of the energy storage units includes a positive electrode structure, a negative electrode structure, and an electrolyte, wherein the electrolyte is disposed between the positive electrode structure and the negative electrode structure.

9. The integrated photovoltaic and energy storage module according to claim 8, characterized in that, Each of the positive electrode structures includes a positive electrode substrate, a positive electrode tab, and a positive electrode material layer. The positive electrode tab is electrically connected to the positive electrode substrate, and the positive electrode material layer is attached to at least one large surface of the positive electrode substrate. Each of the negative electrode structures includes a negative electrode substrate, a negative electrode tab, and a negative electrode material layer. The negative electrode tab is electrically connected to the negative electrode substrate, and the negative electrode material layer is attached to at least one large surface of the negative electrode substrate.

10. The integrated photovoltaic and energy storage module according to claim 9, characterized in that, The positive electrode material layer is disposed on both large surfaces of the positive electrode substrate located between the two negative electrode substrates; The negative electrode material layer is disposed on both large surfaces of the negative electrode substrate located between the two positive electrode substrates.

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