Photovoltaic energy storage charging device and method

Abstract

The present application relates to the technical field of charging temperature control, and specifically relates to a photovoltaic energy storage charging device and method, which comprises a plurality of battery units, support rods, a plurality of temperature control components and an air outlet component. The battery unit comprises a moving wheel, a moving seat and a storage battery. The storage battery is used to be connected with an external charging port, and the support rod is fixed in a placing box. The temperature control component comprises a support frame, an air bag, two push plates and a cooling fan. The support frame is slidingly arranged on the support rod. The two push plates are slidingly arranged in the support frame and located between adjacent two storage batteries. The air bag is arranged between the two push plates. The air bag is used to be expanded by heat to push the two push plates on both sides to increase the spacing between the two storage batteries. The cooling fan is arranged on the support frame and used to cool the space between the two storage batteries. The air outlet component is arranged on the base. The spacing between the batteries can be automatically adjusted according to the temperature condition to better dissipate heat, thereby improving the safety and service life of the batteries.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of charging temperature control, and particularly relates to a photovoltaic energy storage charging device and method. BACKGROUND

[0002] The photovoltaic energy storage charging device is a comprehensive energy system combining solar photovoltaic power generation, energy storage and charging management. It converts light energy into electrical energy through solar panels, part of which can be directly used for load, and the other part is stored in the energy storage battery. When charging electric vehicles, electric bicycles or other electrical equipment is needed, the system can retrieve electrical energy from the energy storage battery to achieve stable and efficient charging service.

[0003] The existing photovoltaic energy storage charging device usually installs the battery pack in a fixed arrangement inside a closed or semi-closed metal box. Although this design is simple in structure and easy to install, it has obvious heat dissipation defects in actual operation. When the device is in a charging or discharging state, electrochemical reactions occur inside the battery, generating a large amount of heat, which causes the battery operating temperature to rise rapidly. Especially in the case of continuous charging, high-power operation or high ambient temperature, heat will accumulate in the box and be difficult to discharge in time. Since the battery is usually rigidly fixed or compactly stacked, the spacing between them is small, and air circulation is poor, forming a local high-temperature area, causing uneven heat dissipation. Long-term operation in a high-temperature environment not only accelerates battery aging and reduces cycle life, but also may cause thermal runaway and safety hazards. SUMMARY

[0004] The present application aims to provide a photovoltaic energy storage charging device and method, which can automatically adjust the spacing between the batteries according to the temperature conditions to better dissipate heat, thereby improving the safety and life of the batteries.

[0005] To achieve the above object, in a first aspect, the application provides a photovoltaic energy storage charging device, comprising a base, a placing box and a solar panel, the placing box is arranged on the base, and the solar panel is arranged on the top of the placing box, further comprising a plurality of battery units, a support rod, a plurality of temperature control components and an air outlet component, the battery unit comprises a moving wheel, a moving seat and a storage battery, the moving wheel is arranged on the base, the moving seat is arranged above the moving wheel, the storage battery is fixed on the moving seat and connected with the solar panel, the storage battery is used for connecting with an external charging port, and the support rod is fixed in the placing box; the temperature control component comprises a support frame, an air bag, two push plates and a cooling fan, the support frame is slidably arranged on the support rod, two push plates are slidably arranged in the support frame and located between two adjacent storage batteries, the air bag is arranged between the two push plates, the air bag is used for expanding to push the two push plates on both sides to increase the spacing between the two storage batteries, and the cooling fan is arranged on the support frame and used for cooling the space between the two storage batteries; and the air outlet component is arranged on the base.

[0006] The placing box comprises a box body, a filter plate and a scraper, the filter plate is arranged at an air inlet of the box body, and the scraper is arranged on one side of the filter plate and used for cleaning impurities on the filter plate; the scraper comprises a cleaning roller, a gear, a rack and a moving block, the moving block is slidably arranged on one side of the box body, the gear is rotatably arranged on the moving block, the rack is fixed on the box body and meshed with the gear, and the cleaning roller is fixedly connected with the gear.

[0007] The battery unit further comprises a plurality of heat-conducting plates, and the plurality of heat-conducting plates are arranged on one side of the storage battery.

[0008] The photovoltaic energy storage charging device further comprises a plurality of temperature detection units, a data judgment unit and a fan control unit, the plurality of temperature detection units are arranged below the plurality of support frames respectively, the data judgment unit is connected with the plurality of temperature detection units, and the fan control unit is connected with the data judgment unit.

[0009] The air bag comprises a vertical bag body and a horizontal bag body, the vertical bag body is arranged below the support frame, the horizontal bag body is communicated with the vertical bag body and located between the two push plates, and the expansion rate of the vertical bag body is less than that of the horizontal bag body.

[0010] The push plate has a connecting block, a connecting groove is arranged on the surface of the storage battery, and the connecting block is slidably arranged in the connecting groove.

[0011] The temperature control assembly further comprises a cooling plate and a plurality of cooling fins, the cooling plate is arranged on one side of the cooling fan, and the plurality of cooling fins are arranged on the cooling plate and below the cooling fan.

[0012] The temperature control assembly further comprises a reset elastic member arranged between the two push plates for resetting the two push plates.

[0013] The air outlet assembly comprises an air outlet fan, a plurality of branch pipes, a flow guide pipe and a plurality of air collection discs, the plurality of air collection discs are arranged below the box body respectively, the plurality of branch pipes are in communication with the plurality of air collection discs respectively, the flow guide pipe is in communication with the plurality of branch pipes, and the air outlet fan is arranged in the flow guide pipe.

[0014] In a second aspect, the present application further provides a photovoltaic energy storage charging method, comprising:

[0015] The battery is charged by the solar panel, and the battery charges external equipment through an external charging port;

[0016] The battery generates heat when charging, so that the temperature near the support frame increases, the air bag absorbs heat to expand the internal gas, and the two push plates on the two sides are pushed to increase the spacing between the two batteries;

[0017] The space between the two batteries is cooled by the cooling fan.

[0018] The present application provides a photovoltaic energy storage charging device and method, the placing box is fixedly arranged on the upper part of the base, as the core bearing and protection structure of the device, for accommodating the energy storage module and the related temperature control assembly; the solar panel is installed on the top surface of the placing box and is arranged obliquely towards the solar incident direction to maximize the light energy absorption efficiency. The solar panel is electrically connected with the internal energy storage system through a wire, converts the received solar energy into electric energy and stores it in the battery.

[0019] The moving wheel is arranged on the bottom or internal track structure of the base, facilitating flexible movement of the whole device in different terrains or use scenarios; the moving seat is fixedly installed above the moving wheel and serves as a mounting platform for the battery; the battery is fixed to the moving seat and is electrically connected with the solar panel through a circuit system, for storing the electric energy converted from the solar energy. Meanwhile, the battery is also provided with an external output interface, which can be connected with external electrical equipment or a charging port, realizes external power supply function and meets various power demands.

[0020] The support rod is vertically fixed in the placing box and serves as a guide and support structure of the temperature control assembly to ensure stable sliding operation. The support frame is a hollow frame structure and is sleeved on the support rod and can move left and right along the support rod within a certain range. The two push plates are symmetrically arranged in the channel in the support frame and are accurately arranged in the gap region between the adjacent two batteries. The air bag is arranged between the two push plates and is made of a flexible sealing material with good thermal expansion characteristics. When the battery generates heat during charging and discharging and the temperature around the battery rises, the air bag expands due to heat and pushes the two push plates to move outward, so that the distance between the adjacent batteries is actively increased. The design not only effectively avoids the damage of the battery caused by thermal expansion, but also optimizes the layout of the heat dissipation space through dynamic adjustment of the distance.

[0021] The heat dissipation fan is integrated in the side wall or the internal air duct of the support frame, and the air outlet of the heat dissipation fan faces the gap between the batteries. When the temperature control assembly senses a temperature rise, the heat dissipation fan is automatically started to force the convection air to pass through the enlarged heat dissipation channel formed by the push plates, so that the heat exchange efficiency is significantly improved, and active air cooling of the battery pack is realized. The heat dissipation path is reasonably designed, and the heat is sequentially discharged outside through the battery surface-gap airflow-air outlet assembly. The air outlet assembly is arranged in the side wall or the bottom ventilation area of the base and is used for timely discharging the hot air generated in the heat dissipation process outside the equipment to prevent the heat from accumulating in the box. At the same time, the air outlet assembly also has dustproof and waterproof functions to ensure the safe operation of the internal electrical elements.

[0022] The application realizes intelligent thermal management of the battery unit in the photovoltaic energy storage equipment by innovatively introducing a composite temperature control system combining the self-adaptive distance adjustment mechanism based on the thermal expansion principle and forced air cooling, and improves the safety, stability and service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 is a structural diagram of a photovoltaic energy storage charging equipment of the present application.

[0025] Figure 2 is a right side structural diagram of a photovoltaic energy storage charging equipment of the present application.

[0026] Figure 3 is a sectional structural diagram of a photovoltaic energy storage charging equipment of the present application.

[0027] Figure 4 is Figure 3 Detail A is a partial enlarged view.

[0028] Figure 5 is a structural view of a photovoltaic energy storage charging device of the present application without a placement box.

[0029] Figure 6 is a cross-sectional structural view of a photovoltaic energy storage charging device of the present application without a placement box.

[0030] Figure 7 is a structural view of a temperature detection unit, a data judgment unit and a fan control unit of the present application.

[0031] Figure 8 is a flow chart of a photovoltaic energy storage charging method of the present application.

[0032] Base 101, placement box 102, solar panel 103, battery unit 104, support rod 105, moving wheel 106, moving seat 107, storage battery 108, support frame 109, air bag 110, push plate 111, cooling fan 112, box body 113, filter plate 114, cleaning roller 115, gear 116, rack 117, moving block 118, heat conduction plate 119, temperature detection unit 120, data judgment unit 121, fan control unit 122, vertical bag body 123, transverse bag body 124, connecting block 125, cooling plate 126, cold guide 127, reset elastic member 128, air outlet fan 129, branch pipe 130, flow guide pipe 131, air collection disc 132. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0034] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, in the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0035] First embodiment

[0036] Referring to Figures 1-7 The application provides a photovoltaic energy storage charging device, which comprises a base 101, a placing box 102 and a solar panel 103, the placing box 102 is arranged on the base 101, the solar panel 103 is arranged on the top of the placing box 102, and the device further comprises a plurality of battery units 104, a support rod 105, a plurality of temperature control assemblies and an air outlet assembly, the battery unit 104 comprises a moving wheel 106, a moving seat 107 and a storage battery 108, the moving wheel 106 is arranged on the base 101, the moving seat 107 is arranged above the moving wheel 106, the storage battery 108 is fixed on the moving seat 107 and connected with the solar panel 103, the storage battery 108 is used for being connected with an external charging port, and the support rod 105 is fixed in the placing box 102; the temperature control assembly comprises a support frame 109, an air bag 110, two push plates 111 and a heat dissipation fan 112, the support frame 109 is slidingly arranged on the support rod 105, the two push plates 111 are slidingly arranged in the support frame 109 and located between adjacent two storage batteries 108, the air bag 110 is arranged between the two push plates 111, the air bag 110 is used for being heated and expanded to push the two push plates 111 on the two sides to increase the spacing between the two storage batteries 108, and the heat dissipation fan 112 is arranged on the support frame 109 and used for dissipating heat in the space between the two storage batteries 108; and the air outlet assembly is arranged on the base 101.

[0037] In the embodiment, the placing box 102 is fixedly arranged on the upper portion of the base 101 and serves as a core bearing and protection structure of the device and is used for accommodating an energy storage module and related temperature control assemblies; the solar panel 103 is installed on the top surface of the placing box 102 and is arranged to be inclined to the direction of solar incidence to maximize the light energy absorption efficiency. The solar panel 103 is electrically connected with the internal energy storage system through wires, converts the received solar energy into electric energy and stores the electric energy in the storage battery 108.

[0038] The moving wheel 106 is arranged on the bottom or an internal track structure of the base 101 and facilitates flexible movement of the whole device in different terrains or use scenarios; the moving seat 107 is fixedly installed above the moving wheel 106 and serves as an installation platform of the storage battery 108; the storage battery 108 is fixed on the moving seat 107 and is electrically connected with the solar panel 103 through a circuit system and is used for storing electric energy converted from solar energy. Meanwhile, the storage battery 108 is also provided with an external output interface and can be connected with an external power consumption device or charging port to realize external power supply function and meet various power consumption demands.

[0039] The support rod 105 is vertically fixed inside the placing box 102, serving as a guide and support structure of the temperature control assembly to ensure stable sliding operation. The support frame 109 is a hollow frame structure, which is sleeved on the support rod 105 and can move left and right along the support rod 105 within a certain range. Two push plates 111 are symmetrically arranged in the channel inside the support frame 109 and are accurately arranged in the gap area between two adjacent batteries 108. The air bag 110 is arranged between the two push plates 111 and is made of flexible sealing material with good thermal expansion characteristics. When the battery 108 generates heat during charging and discharging and causes the surrounding temperature to rise, the air bag 110 expands due to heat, pushing the two push plates 111 to move outward, thereby actively increasing the distance between the adjacent batteries 108. This design not only effectively avoids the damage of battery compression caused by thermal expansion, but also optimizes the layout of the heat dissipation space through dynamic adjustment of the distance.

[0040] The heat dissipation fan 112 is integrated in the side wall or internal air duct of the support frame 109, and the air outlet thereof faces the gap between the batteries 108. When the temperature control assembly senses a temperature rise, the heat dissipation fan 112 is automatically started to force the convection air to pass through the enlarged heat dissipation channel formed by the push plates 111 pushed apart, significantly improving the heat exchange efficiency and achieving active air cooling of the battery pack. The heat dissipation path is reasonably designed, and the heat is sequentially discharged outside the device via the battery surface-gap airflow-air outlet assembly.

[0041] The air outlet assembly is arranged in the side wall or bottom ventilation area of the base 101, which is used for timely discharging the hot air generated in the heat dissipation process outside the device to prevent heat accumulation in the box 113. At the same time, the air outlet assembly also has dustproof and waterproof functions to ensure the safe operation of the internal electrical elements.

[0042] In summary, the application combines the self-adaptive distance adjustment mechanism based on the principle of thermal expansion with the forced air cooling to realize intelligent thermal management of the battery unit 104 in the photovoltaic energy storage device, and improve the safety, stability and service life of the device.

[0043] The placing box 102 comprises a box body 113, a filter plate 114 and a scraper. The filter plate 114 is arranged at the air inlet of the box body 113, and the scraper is arranged on one side of the filter plate 114 and used for cleaning impurities on the filter plate 114. The scraper comprises a cleaning roller 115, a gear 116, a rack 117 and a moving block 118. The moving block 118 is slidably arranged on one side of the box body 113. The gear 116 is rotatably arranged on the moving block 118. The rack 117 is fixed on the box body 113 and is engaged with the gear 116. The cleaning roller 115 is fixedly connected with the gear 116.

[0044] The box 113 is a hollow closed structure made of high-strength weather-resistant materials such as aluminum alloy or engineering plastics, with good waterproof, dustproof and ultraviolet resistance. At least one air inlet is provided on the side wall or bottom of the box 113 for introducing external air to assist the heat exchange of the heat dissipation system. The filter plate 114 is fixedly arranged inside or outside the air inlet of the box 113, and adopts a multi-layer composite filter screen structure, such as a primary efficiency nylon screen combined with an activated carbon layer or an electrostatic filter material, which can effectively intercept dust particles, pollen, insects, leaf debris and other impurities in the air, preventing them from entering the device and causing problems such as battery 108 surface dust accumulation, circuit short circuit or heat dissipation channel blockage.

[0045] However, during long-term operation, the surface of the filter plate 114 is prone to clogging due to the accumulation of impurities, resulting in a decrease in air intake and affecting the overall heat dissipation efficiency. The scraper is arranged on one side of the filter plate 114, adjacent to the surface of the filter plate 114, and can periodically or automatically start according to the pressure difference sensor signal during the operation cycle of the device to remove the dirt attached to the filter plate 114.

[0046] Further, the scraper mechanism includes a cleaning roller 115, a gear 116, a rack 117 and a moving block 118, which constitute a precise linear transmission self-cleaning system. The moving block 118 is slidably arranged on the outer side wall or internal support of the box 113 through a guide rail or sliding groove structure, and can move reciprocally in the horizontal direction. The gear 116 is rotatably mounted on the moving block 118 and engaged with the rack 117 fixed to the side wall of the box 113. The rack 117 is arranged along the movement trajectory direction of the moving block 118, and when the moving block 118 is driven to displace, the gear 116 rolls and engages thereon to achieve stable and reliable transmission.

[0047] The cleaning roller 115 is a cylindrical brush roller or a rubber roller with raised texture, whose axial direction is parallel to the surface of the filter plate 114 and is in close contact or maintains a small gap with the filter plate 114. One end or both ends of the cleaning roller 115 are coaxially fixedly connected with the gear 116, so that the gear 116 rotates synchronously to drive the cleaning roller 115 to rotate when the gear 116 rotates. When the device control system triggers the ash removal program, the driving device such as a micro motor, an electromagnetic push rod or a fan vibration excitation drives the moving block 118 to slide along the guide rail, and the moving block 118 drives the gear 116 to move linearly along the fixed rack 117, thereby driving the cleaning roller 115 to rotate and horizontally sweep across the surface of the filter plate 114, scraping off the dust and impurities attached thereto and collecting them into the dust collection groove or the residue discharge port below, and finally discharging them outside the box 113 through gravity or airflow.

[0048] This design realizes the automatic maintenance of the filter system, eliminates the need for frequent manual cleaning of the filter screen, and greatly improves the intelligent level and long-term operation reliability of the device.

[0049] The battery unit 104 further comprises a plurality of heat-conducting plates 119 arranged on one side of the battery 108.

[0050] The plurality of heat-conducting plates 119 can be arranged in an array or a continuous plate structure between adjacent batteries 108 or in contact with the inner wall of the support frame 109, forming a multi-stage heat-conducting path of "battery-heat-conducting plate 119-support structure". Some of the heat-conducting plates 119 can also extend into the interior of the support frame 109 or align with the airflow channel of the cooling fan 112, further enhancing the convective heat exchange effect. Through this design, not only the heat dissipation capacity of a single battery is improved, but also the temperature consistency of the entire battery pack is improved, which is of great significance for prolonging the cycle life of the battery 108, improving the energy storage efficiency, and preventing thermal runaway.

[0051] The photovoltaic energy storage charging device further comprises a plurality of temperature detection units 120, a data judgment unit 121, and a fan control unit 122. The plurality of temperature detection units 120 are arranged below the plurality of support frames 109, the data judgment unit 121 is connected with the plurality of temperature detection units 120, and the fan control unit 122 is connected with the data judgment unit 121.

[0052] Further, to realize real-time monitoring and intelligent control of the internal thermal environment of the device, the photovoltaic energy storage charging device further comprises a plurality of temperature detection units 120, a data judgment unit 121, and a fan control unit 122, forming a complete closed-loop temperature control management system.

[0053] The plurality of temperature detection units 120 are arranged below the plurality of support frames 109, preferably at a position close to the bottom of the battery 108 or the hot air collection area, to ensure the accuracy and representativeness of temperature measurement. The temperature detection unit 120 can use a high-precision digital temperature sensor (such as DS18B20, NTC thermistor, or infrared temperature measurement module), which can collect temperature data of each battery unit 104 and its surrounding environment in real time, and transmit the signal to the data judgment unit 121 through wired or wireless means.

[0054] The data judgment unit 121 is electrically connected with all the temperature detection units 120, responsible for receiving, processing, and analyzing temperature information from each measuring point. This unit can be integrated into the main control PCB board of the device, containing a microprocessor (MCU) or an embedded control system, with data storage, trend analysis, and threshold judgment functions. It is pre-set with multi-stage temperature response strategies: for example, when the temperature of a certain area exceeds the first threshold value (such as 40°C), the early warning mechanism is started; when the temperature reaches the second threshold value (such as 55°C), it is determined as a high-temperature state, triggering the cooling action.

[0055] The fan control unit 122 is connected with the data judgment unit 121, receives the control instruction sent by the data judgment unit 121, and adjusts the working state of the heat dissipation fan 112 according to the control instruction. The fan control unit 122 can adopt a PWM (pulse width modulation) speed regulation technology to realize stepless adjustment of the rotating speed of the heat dissipation fan 112. For example, when the temperature is low, the heat dissipation fan 112 is maintained at a low speed to save energy and reduce noise; as the temperature rises, the rotating speed of the heat dissipation fan 112 is gradually increased to enhance the air cooling effect; when the temperature returns to normal, the rotating speed of the heat dissipation fan 112 is automatically reduced or the heat dissipation fan 112 is stopped. In addition, the control unit can also support zoned control, that is, according to the temperature difference of different zones, the start-stop and air volume of the heat dissipation fan 112 on the corresponding support frame 109 are independently adjusted and controlled to realize fine and on-demand heat dissipation management.

[0056] The air bag 110 includes a vertical bag body 123 and a transverse bag body 124. The vertical bag body 123 is arranged below the support frame 109, and the transverse bag body 124 is in communication with the vertical bag body 123 and located between the two push plates 111. The expansion rate of the vertical bag body 123 is less than that of the transverse bag body 124.

[0057] The transverse bag body 124 is in communication with the inside of the vertical bag body 123 to form a sealed air cavity system, and the gas flow is usually realized through an internal channel or a flexible connecting pipe. The transverse bag body 124 is arranged in a horizontal or approximately horizontal state between the two push plates 111, and the expansion direction of the transverse bag body 124 is perpendicular to the arrangement direction of the battery 108. When the ambient temperature rises, the gas (such as air or inert gas) in the air bag 110 expands due to heat, first generates pressure in the vertical bag body 123, and then the gas transfers to the transverse bag body 124 with a larger expansion space and pushes it to expand to both sides.

[0058] It is worth noting that the expansion rate of the vertical bag body 123 is less than that of the transverse bag body 124, which is realized by adjusting the wall thickness, material elastic modulus or internal volume of the two parts of the bag body. For example, the vertical bag body 123 adopts a thicker or more rigid elastic material to limit its radial expansion capability, while the transverse bag body 124 adopts a thin-walled flexible material with higher ductility and expansion coefficient. The structural advantage is that, on the one hand, the vertical bag body 123 as the “temperature sensing end” remains stable in structure to avoid affecting the overall installation position due to excessive expansion; on the other hand, the transverse bag body 124 as the “execution end” can generate a larger transverse thrust to efficiently push the two push plates 111 to move outward, thereby significantly increasing the heat dissipation gap between the adjacent batteries 108. This “sensing-motion separation” design improves the sensitivity of the air bag 110 response and the reliability of the action, and realizes accurate conversion from temperature change to mechanical displacement.

[0059] The push plate 111 has a connecting block 125, and the surface of the battery 108 is provided with a connecting groove, and the connecting block 125 is slidingly arranged in the connecting groove.

[0060] Further, to ensure the smooth movement of the push plate 111, accurate guidance and synchronous displacement with the battery 108, the push plate 111 is provided with a connecting block 125. The connecting block 125 is usually a convex slider structure, fixed to the side of the push plate 111 facing the battery 108, or integrally formed with the push plate 111. Correspondingly, a matching connecting groove is formed on the side surface of each battery 108, which extends along the height direction of the battery 108, in the form of a dovetail groove, T-shaped groove or rectangular sliding groove, with a certain length and guidance accuracy.

[0061] The connecting block 125 is slidingly arranged in the connecting groove, forming a "sliding fitting" structure. When the air bag 110 expands to push the push plate 111 to move outward, the connecting block 125 synchronously slides in the connecting groove, not only transmitting the pushing force to make the battery 108 produce a small displacement (or keep the push plate 111 in contact with the surface of the battery), but also effectively constrain the movement trajectory of the push plate 111, preventing it from deflecting, jamming or disengaging during sliding.

[0062] The temperature control assembly further includes a cooling plate 126 and a plurality of cooling fins 127. The cooling plate 126 is arranged on one side of the cooling fan 112, and the plurality of cooling fins 127 are arranged on the cooling plate 126 and located below the cooling fan 112.

[0063] The temperature control assembly further integrates active cooling and heat conduction enhancement structure to improve the overall heat dissipation efficiency. Specifically, the assembly further includes a cooling plate 126 and a plurality of cooling fins 127. The cooling plate 126 is arranged on one side of the cooling fan 112, preferably located on the air outlet side of the cooling fan 112 or downstream of the air duct, made of metal material with good heat conduction performance (such as aluminum alloy or copper), and the surface can be anodized or plated to enhance corrosion resistance. The cooling plate 126 can be designed as a hollow cavity structure inside, filled with phase change material (such as paraffin PCM) or provided with micro channels, for absorbing and storing instantaneous high heat load, achieving heat buffering and slow release, preventing temperature rise.

[0064] A plurality of the cold-lead fins 127 are uniformly arranged on the cooling plate 126 and located in the airflow path below the cooling fan 112. The cold-lead fins 127 are thin sheet metal fins arranged in an array, fixed vertically or obliquely on the surface of the cooling plate 126, forming a high-efficiency extended heat dissipation area. When the cooling fan 112 is started, the forced airflow flows from the gap between the batteries 108 to the outlet assembly direction. The airflow first passes through the high-temperature area to take away heat, and then passes through the narrow channel between the cold-lead fins 127, where sufficient convective heat exchange occurs with the cold-lead fins 127, further absorbing residual heat and transferring it to the cooling plate 126, and finally dissipating heat from the cooling plate 126 as a whole or being discharged outside the device by the outlet fan 129.

[0065] The temperature control assembly further comprises a reset elastic member 128 arranged between the two push plates 111 for resetting the two push plates 111.

[0066] In addition, to realize the reversibility and cyclic use of the temperature control assembly, the temperature control assembly further comprises a reset elastic member 128. The reset elastic member 128 is arranged between the two push plates 111 and symmetrically arranged on the periphery or inside of the air bag 110, which can be in the form of a compression spring, a rubber elastomer or a corrugated metal spring. Its function is to provide a reverse restoring force when the ambient temperature decreases and the gas in the air bag 110 cools and shrinks, automatically pulling the two push plates 111 that have been pushed away due to the expansion of the air bag 110 back to the initial position, restoring the original spacing between the adjacent batteries 108.

[0067] The outlet assembly comprises an outlet fan 129, a plurality of branch pipes 130, a flow guide pipe 131 and a plurality of gas collection discs 132. A plurality of the gas collection discs 132 are arranged below the box 113, a plurality of the branch pipes 130 are in communication with a plurality of the gas collection discs 132, the flow guide pipe 131 is in communication with a plurality of the branch pipes 130, and the outlet fan 129 is arranged in the flow guide pipe 131.

[0068] A plurality of the gas collection discs 132 are arranged below the box 113, corresponding to the bottom area of each battery cell 104 or support frame 109. The gas collection disc 132 is in the form of a bowl or a cone structure with a large air inlet for collecting hot air rising from the battery gap, the cold-lead fin 127 area and the surrounding support frame 109. Since hot air has the natural characteristic of rising by convection, the gas collection disc 132 can effectively converge the waste heat airflow generated by each local heat source, preventing it from diffusing disorderly in the box 113 and causing heat accumulation.

[0069] A plurality of said branch pipes 130 are respectively communicated with a plurality of said gas collecting discs 132, serving as independent exhaust branch channels, usually made of high-temperature-resistant and flame-retardant engineering plastics or metal hoses, having certain flexibility and installation adaptability. Each branch pipe 130 guides hot air from different areas to the main exhaust channel, i.e. said flow guide pipe 131. Said flow guide pipe 131 is a main pipe across one side or the bottom of the box 113, connected with all branch pipes 130, smooth inside to reduce wind resistance, and provided with an anti-backflow baffle or a one-way valve to prevent external cold air from flowing back to affect the internal temperature stability.

[0070] Said air outlet fan 129 is arranged inside said flow guide pipe 131, preferably at the end outlet of the flow guide pipe 131, adopts an axial flow or centrifugal fan, and is automatically started or speed-adjusted by the control system according to the data of the temperature detection unit 120. When the system determines that the internal temperature reaches a preset threshold value, the air outlet fan 129 is started to generate a negative pressure suction effect, accelerating the flow process of hot air from the gas collecting disc 132→branch pipe 130→flow guide pipe 131→external environment, forming a complete "intake-dissipation-exhaust" ventilation circulation. This multi-stage exhaust structure not only improves the exhaust efficiency, but also realizes balanced heat dissipation management of multiple heat sources inside the equipment, avoiding local overheating phenomenon.

[0071] Second embodiment

[0072] Please refer to Figure 8 The application also provides a photovoltaic energy storage charging method, comprising:

[0073] S201 charge the battery 108 through the solar panel 103, and the battery 108 charges external equipment through an external charging port;

[0074] The solar panel 103 arranged on the top of the placing box 102 receives solar radiation energy and converts it into direct current energy. After optimization and adjustment by the built-in charge-discharge control module (such as an MPPT maximum power point tracking controller), the electric energy is transmitted to the battery 108 in the plurality of battery units 104 for storage. The battery 108 adopts lithium ion, lithium iron phosphate or other high-energy-density energy storage units, has good cycle life and charge-discharge efficiency. When the battery 108 accumulates a certain amount of electricity, it can be connected to external power-consuming equipment (such as mobile phones, notebook computers, lighting lamps, small electric tools, etc.) through the external charging port (such as USB-A, USB-C, Type-C PD or direct current fast charging interface) configured by the battery 108, to realize external power supply function. The control system can monitor the state of charge (SOC), output voltage and current of the battery 108 in real time, to ensure that the charging process is safe, stable and efficient.

[0075] S202 When the battery 108 is charging, heat is generated, causing the temperature around the support frame 109 to rise, and the air bag 110 absorbs heat, causing the internal gas to expand and push the two push plates 111 on both sides to increase the spacing between the two batteries 108;

[0076] During the continuous charging or large current discharging of the battery 108, due to the heating effect of the internal resistance, the temperature of the battery body and the surrounding environment gradually rises, especially in the closed box 113, which is prone to local heat accumulation. When the heat is conducted to the support frame 109 and its surrounding area, the air bag 110 arranged between the two adjacent batteries 108 begins to absorb heat. The air bag 110 includes a vertical bag body 123 and a horizontal bag body 124, wherein the vertical bag body 123 is preferentially heated as a temperature sensing end, and the internal sealed gas (such as air or inert gas) expands due to the temperature rise and is transferred to the horizontal bag body 124 with a higher expansion rate. With the increase of air pressure, the horizontal bag body 124 expands to both sides, pushing the two push plates 111 connected thereto to slide outward along the inner wall of the support frame 109.

[0077] The push plate 111 is slidably embedded in the connecting groove of the side wall of the battery 108 through the connecting block 125, and under the action of the pushing force, the adjacent battery 108 is slightly displaced, thereby actively increasing the heat dissipation gap between the two. This process is purely physically driven without the need for external energy intervention, and is fast in response and high in reliability. As the spacing increases, the originally narrow battery gap is converted into a heat dissipation channel that is conducive to air circulation, significantly improving the heat exchange efficiency of natural convection and subsequent forced air cooling. This dynamic adjustment mechanism effectively avoids the risk of battery performance degradation, accelerated aging, and even thermal runaway caused by high temperature, and realizes the intelligent linkage of "temperature rise-structure expansion-heat dissipation enhancement".

[0078] S203 The heat dissipation fan 112 dissipates heat in the space between the two batteries 108.

[0079] When the temperature detection unit 120 monitors that the temperature of the area below the support frame 109 reaches the preset starting threshold (such as above 40℃), the data judgment unit 121 will analyze the signal and trigger the fan control unit 122 to act, starting the heat dissipation fan 112 arranged on the support frame 109. At this time, the fan generates directional airflow and forcibly blows into the enlarged battery gap space formed by the push plate 111. The airflow fully contacts the surface of the battery 108 and the heat-conducting plate 119 arranged therebetween during the process of passing through the gap, and carries away the accumulated heat. Subsequently, the hot air continues to rise and is guided to the cooling plate 126 and the cooling fin 127 area, where it is further exchanged with high-thermal-conductivity materials, improving the overall heat dissipation capacity.

[0080] The above disclosed is only a preferred embodiment of the present application, of course, cannot be limited by this to limit the scope of the present application, the person skilled in the art can understand that the implementation of all or part of the above-mentioned processes, and according to the equivalent changes of the claims of the present application, still belong to the scope covered by the present application.

Claims

1. A photovoltaic energy storage charging device, comprising a base, a placement box, and a solar panel, wherein the placement box is disposed on the base, and the solar panel is disposed on the top of the placement box, characterized in that, It also includes multiple battery units, support rods, multiple temperature control components and venting components. The battery unit includes a moving wheel, a moving base and a storage battery. The moving wheel is set on the base, the moving base is set above the moving wheel, the storage battery is fixed on the moving base and connected to the solar panel, the storage battery is used to connect to an external charging port, and the support rod is fixed inside the placement box. The temperature control component includes a support frame, an airbag, two push plates, and a cooling fan. The support frame is slidably mounted on the support rod. The two push plates are slidably mounted within the support frame and located between two adjacent batteries. The airbag is positioned between the two push plates and is used to expand when heated, pushing the two push plates on both sides to increase the distance between the two batteries. The cooling fan is mounted on the support frame and is used to dissipate heat from the space between the two batteries. The air outlet component is mounted on the base. The airbag includes a vertical bladder and a horizontal bladder. The vertical bladder is positioned below the support frame, and the horizontal bladder communicates with the vertical bladder and is located between the two push plates. The expansion rate of the vertical bladder is less than that of the horizontal bladder. When the ambient temperature rises, pressure is first generated in the vertical bladder, and the expansion rate of the vertical bladder is... The vertical bladder, smaller than the horizontal bladder, serves as the temperature sensing end to avoid affecting the overall installation position due to excessive expansion. The horizontal bladder generates greater lateral thrust, pushing the push plates on both sides outward, thereby increasing the heat dissipation gap between adjacent batteries. The temperature control assembly also includes a reset elastic element, which is disposed between the two push plates to reset them. The placement box includes a box body, a filter plate, and a scraper. The filter plate is disposed at the air inlet of the box body, and the scraper is disposed on one side of the filter plate to clean impurities on the filter plate. The air outlet assembly includes an air outlet fan, multiple branch pipes, a guide pipe, and multiple air collection plates. The multiple air collection plates are respectively disposed below the box body, the multiple branch pipes are respectively connected to the multiple air collection plates, the guide pipe is connected to the multiple branch pipes, and the air outlet fan is disposed inside the guide pipe.

2. The photovoltaic energy storage charging device as described in claim 1, characterized in that, The scraper includes a cleaning roller, a gear, a rack, and a moving block. The moving block is slidably disposed on one side of the housing. The gear is rotatably disposed on the moving block. The rack is fixed to the housing and meshes with the gear. The cleaning roller is fixedly connected to the gear.

3. The photovoltaic energy storage charging device as described in claim 2, characterized in that, The battery unit also includes multiple heat-conducting plates, which are disposed on one side of the battery.

4. The photovoltaic energy storage charging device as described in claim 3, characterized in that, The photovoltaic energy storage charging device also includes multiple temperature detection units, a data judgment unit, and a fan control unit. The multiple temperature detection units are respectively arranged below the multiple support frames. The data judgment unit is connected to the multiple temperature detection units, and the fan control unit is connected to the data judgment unit.

5. A photovoltaic energy storage charging device as described in claim 4, characterized in that, The push plate has a connecting block, and a connecting groove is provided on the surface of the battery. The connecting block is slidably disposed in the connecting groove.

6. A photovoltaic energy storage charging device as described in claim 5, characterized in that, The temperature control component also includes a cooling plate and multiple heat-conducting fins. The cooling plate is disposed on one side of the cooling fan, and the multiple heat-conducting fins are disposed on the cooling plate and located below the cooling fan.

7. A photovoltaic energy storage charging method, applied to a photovoltaic energy storage charging device according to any one of claims 1 to 6, characterized in that, include: The battery is charged by a solar panel, and the battery charges external devices through an external charging port. When the battery is charging, it generates heat, which raises the temperature near the support frame. The airbag absorbs heat and causes the internal gas to expand, pushing the two push plates on both sides to increase the distance between the two batteries. The cooling fan dissipates heat from the space between the two batteries.

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