An energy storage device

Abstract

The embodiment of the application discloses a kind of energy storage devices, including cabinet, heat dissipation component, cleaning component and photovoltaic module, cabinet includes cabinet main body, cabinet main body includes bottom plate, top plate and connect between bottom plate and top plate backboard and two side plates, battery cabin is equipped in cabinet main body, at least one air duct cabin is formed between battery cabin and two side plates;Heat dissipation component includes the refrigeration plate being equipped with first liquid cooling flow channel and the radiator being equipped with second liquid cooling flow channel, radiator is located in air duct cabin, refrigeration plate is set in battery cabin and is used to carry electric core, first liquid cooling flow channel and second liquid cooling flow channel are communicated by liquid outlet pipeline;Cleaning component includes at least one scraper, scraper is movably located in air duct cabin, and contact with radiator;Side plate is equipped with heat dissipation port in the position corresponding with radiator.By the above structure, the integrated setting of photovoltaic power generation, energy storage heat dissipation and radiator cleaning is realized, and the operation reliability of energy storage device is improved.

Description

An energy storage device Technical Field

[0001] This application relates to the field of energy storage technology, specifically to an energy storage device. Background Technology

[0002] Currently, integrated photovoltaic-storage energy storage devices mainly use modular or hybrid inverters to integrate within a single energy storage cabinet, while the photovoltaic panels are independently installed outside the cabinet or on separate supports. This results in complex wiring, significant energy transmission losses, and a large overall structural footprint. Furthermore, the internal cooling of these energy storage devices often employs a combination of liquid and air cooling. However, the heat sinks are constantly exposed to outdoor air, making them prone to accumulating dust and impurities, leading to decreased cooling efficiency and potentially affecting system stability.

[0003] Therefore, it is necessary to provide an energy storage device that can structurally coordinate photovoltaic power generation, liquid cooling, and radiator cleaning functions, so as to reduce maintenance costs and improve overall operational reliability while ensuring heat dissipation effect. Summary of the Invention

[0004] This application provides an energy storage device to solve the problems of complex wiring, large energy transmission loss, and large overall space occupation caused by the separate setting of photovoltaic modules and energy storage cabinets in existing integrated photovoltaic energy storage devices. At the same time, it improves the problem of easy dust accumulation on the heat sink and the decrease in heat dissipation efficiency over time during the operation of the energy storage device.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is as follows: An energy storage device is provided, including a cabinet, a heat dissipation component, a cleaning component, and a photovoltaic component. The cabinet includes a cabinet body, which includes a bottom plate, a top plate, a back plate, and two side plates connected between the bottom plate and the top plate. The bottom plate, top plate, back plate, and side plates together enclose the cabinet body with an opening. A battery compartment is provided inside the cabinet body, and at least one air duct compartment is formed between the battery compartment and the side plates. The heat dissipation component includes a cooling plate with a first liquid cooling channel and a radiator with a second liquid cooling channel. The radiator is located inside the air duct compartment, and the cooling plate is located inside the battery compartment and is used to support the battery cells. The first liquid cooling channel and the second liquid cooling channel are connected through an outlet pipe. The cleaning component includes at least one scraper, which is movably located inside the air duct compartment and in contact with the radiator. The side plates have heat dissipation vents at positions corresponding to the radiator. By arranging the heat sinks within independent air duct compartments, avoiding direct mixing between the heat sinks and battery cells, the heat generated by the battery cells is effectively separated from the air heat exchange path, improving overall heat dissipation efficiency. By directly supporting the battery cells with cooling plates, the heat generated by the cells is conducted to the cooling plates and enters the liquid cooling circuit, thereby improving the precision of battery cell temperature control. By setting heat dissipation vents corresponding to the heat sinks on the side panels, a directional airflow path is created within the air duct compartment, facilitating the timely exhaust of hot air from the cabinet and reducing heat accumulation inside the cabinet. By incorporating photovoltaic modules, the energy storage device can achieve self-powered or auxiliary power supply, reducing dependence on external power sources and improving the system's independent operation capability.

[0006] In one or more of the above optional embodiments, the heat dissipation component includes a pump body, an inlet pipe connected between the pump body and the first liquid cooling channel, and a return pipe connected between the second liquid cooling channel and the pump body. The pump body and the inlet pipe are both located in the battery compartment. The pump body is configured to deliver coolant to the cooling plate through the inlet pipe, and after passing through the radiator, return the coolant to the pump body through the return pipe to form a coolant circulation path, so as to continuously and stably remove the heat generated by the battery cell.

[0007] In one or more of the above optional embodiments, the main body of the rack also includes a baffle for sealing the air duct compartment, and the back panel is provided with an air intake grille communicating with the air duct compartment. By sealing the air duct compartment with the baffle, outside air can only enter the air duct compartment through the air intake grille, and after passing through the radiator, it is discharged through the heat dissipation vent, thereby forming a controllable airflow path within the air duct compartment and reducing the entry of outside dust into the rack from unexpected locations.

[0008] In one or more of the above optional embodiments, the photovoltaic module has a first state and a second state, and the cleaning component is configured to drive the scraper to move during the process of the photovoltaic module switching from the first state to the second state or from the second state to the first state, so that the heat sink can be automatically cleaned without additional independent drive mechanism, thereby reducing system complexity and improving operational reliability.

[0009] In one or more of the above optional embodiments, the photovoltaic module includes a cover plate and a photovoltaic panel. The photovoltaic panel is fixed to the cover plate, and the cover plate is rotatably connected to a top plate and can rotate relative to the top plate between a first position and a second position. In the first position, the cover plate covers the top plate, and the photovoltaic panel is located between the cover plate and the top plate, with the photovoltaic module in a first state. In the second position, the cover plate is flipped relative to the top plate to an open state, exposing the photovoltaic panel to the external environment, with the photovoltaic module in a second state. By rotating the cover plate between the first and second positions, the photovoltaic panel can be switched between a hidden state and an exposed state, which can protect the photovoltaic panel in non-power generation conditions and increase the light-receiving area of ​​the photovoltaic panel in power generation conditions.

[0010] In one or more of the above optional embodiments, the cleaning component includes a lifting mechanism, which is linked to the cover plate. When the cover plate rotates between a first position and a second position, the lifting mechanism drives the scraper to move up and down along the height direction of the air duct chamber. By linking the lifting mechanism with the cover plate, the scraper is driven to move while the cover plate rotates, achieving synchronization between the cover plate flipping action and the radiator cleaning action, avoiding the need for a separate drive source for the scraper, and effectively reducing energy consumption.

[0011] In one or more of the above optional embodiments, the lifting mechanism includes a traction member. The top plate has a guide hole through which the traction member passes. One end of the traction member is connected to a cover plate, and the other end is connected to a scraper via the guide hole. The cover plate has a mounting structure, and the traction member is fitted along the mounting structure. By connecting the traction member to the scraper via the guide hole, the scraper moves with the cover plate. The mounting structure on the cover plate shortens the length of the traction member in free suspension, which helps improve the stability of the traction member during transmission and reduces the risk of the scraper shifting or jamming during movement.

[0012] In one or more of the above optional embodiments, a chute is provided along the height direction inside the air duct compartment, and a scraper is slidably connected to the chute; a scraper brush is provided on the side of the scraper near the radiator, and the scraper brush contacts the radiator fins. By providing the chute, the movement direction of the scraper is further defined, and by providing a scraper brush on the scraper, dust and dirt on the surface of the radiator fins can be brushed away during the movement of the scraper, thereby improving the heat dissipation performance of the radiator.

[0013] In one or more of the above optional embodiments, a gravity chamber is provided inside the main cabinet, located below the air duct compartment. The cleaning component includes interconnected connecting lines and counterweights. One end of the connecting line is connected to the scraper, and the other end passes through a positioning hole in the gravity chamber and connects to the counterweight, which is housed within the gravity chamber. By setting the counterweight, the scraper can automatically return to its original position under specific working conditions using its gravity, reducing the continuous pulling force required on the traction component. This allows for scraper reset and auxiliary drive without increasing additional energy consumption, improving the system's energy efficiency and reliability.

[0014] In one or more of the above optional embodiments, the cover plate includes a first cover plate and a second cover plate, the photovoltaic panel includes a first photovoltaic panel and a second photovoltaic panel, the first photovoltaic panel is fixed to the first cover plate, the second photovoltaic panel is fixed to the second cover plate, the side plates include a first side plate and a second side plate, the first cover plate is rotatably connected to the side of the top plate near the first side plate, and the second cover plate is rotatably connected to the side of the top plate near the second side plate; in a first position, the second cover plate covers the top plate, and the first cover plate covers the second cover plate, with the second photovoltaic panel located between the top plate and the second cover plate, and the first photovoltaic panel located between the first cover plate and the second cover plate; in a second position, the first cover plate is flipped relative to the top plate to an open state, so that the first photovoltaic panel is exposed to the external environment, and the second cover plate is flipped relative to the top plate to an open state, so that the second photovoltaic panel is exposed to the external environment. By setting the first cover plate and the second cover plate and stacking them, more photovoltaic panels can be arranged on a limited top plate area, increasing the installed capacity of the photovoltaic module. At the same time, the tiered flipping structure makes the unfolding and retraction process of the photovoltaic panel more stable, which helps to reduce structural impact and wear.

[0015] In one or more of the above optional embodiments, the photovoltaic module further includes a third photovoltaic panel, which is fixed to the top plate. In a first position, the third photovoltaic panel is located between the top plate and the second photovoltaic panel. By adding a third photovoltaic panel to the top plate, power generation can still be carried out using the space of the top plate when the cover is open, thereby improving the power generation capacity of the energy storage device in the deployed state.

[0016] In one or more of the above optional embodiments, a first air duct compartment is formed between the battery compartment and the second side panel, and a second air duct compartment is formed between the battery compartment and the second side panel. Both the first and second air duct compartments are equipped with radiators and scrapers, with the scrapers contacting their respective radiators. By setting the first and second air duct compartments on both sides of the battery compartment, and configuring radiators and scrapers in each air duct compartment, independent cleaning of the radiators on different sides is achieved, while reducing the risk of insufficient heat dissipation capacity on one side affecting the overall system operation.

[0017] In one or more of the above optional embodiments, the heat dissipation assembly further includes a PTC heater connected between the pump body and the inlet pipe for heating the coolant. By using the PTC heater, the coolant can be heated at low temperatures, allowing the coolant to transfer heat to the battery cell in the reverse direction, thereby improving the low-temperature performance of the battery cell.

[0018] In one or more of the above optional embodiments, the cabinet further includes a first cabinet door, which is rotatably connected to the battery compartment. The first cabinet door is used to open and close the battery compartment to protect the battery cells and facilitate maintenance and repair of the battery compartment. And / or the cabinet includes a second cabinet door, which is rotatably connected to the cabinet body. The second cabinet door is used to open and close the opening and is provided with an air vent. And / or the heat dissipation component includes a fan structure, which is installed at the heat dissipation vent to enhance airflow and improve heat dissipation efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0020] Figure 1 is a perspective view of the energy storage device provided in an embodiment of this application;

[0021] Figure 2 is a perspective view of the energy storage device shown in Figure 1 with the cabinet in the open state;

[0022] Figure 3 is a perspective view of the main body of the cabinet in the energy storage device shown in Figure 2;

[0023] Figure 4A is a schematic diagram of the photovoltaic module in the first state of the energy storage device shown in Figure 2;

[0024] Figure 4B is a perspective view of the energy storage device shown in Figure 4A, displaying the wind tunnel compartment;

[0025] Figure 5 is a schematic diagram of the installation of heat dissipation components and battery cells in the energy storage device shown in Figure 2;

[0026] Figure 6 is a cross-sectional view of the cooling plate in the heat dissipation assembly shown in Figure 5;

[0027] Figure 7 is another perspective view of the energy storage device shown in Figure 1;

[0028] Figure 8 is a three-dimensional view of the heat dissipation component;

[0029] Figure 9 is a three-dimensional view of the cooling plate in the heat dissipation assembly shown in Figure 8;

[0030] Figure 10 is a schematic diagram of the cover plate in the second position in a photovoltaic module;

[0031] Figure 11 is an enlarged view of point A in Figure 10;

[0032] Figure 12 is a schematic diagram of the photovoltaic module in the second state of the energy storage device shown in Figure 4A;

[0033] Figure 13 is a schematic diagram of the cover plate in the first position in a photovoltaic module;

[0034] Figure 14 is an enlarged view of point B in Figure 13.

[0035] Figure label:

[0036] 100. Energy storage device; 200. Battery cell;

[0037] 10. Server rack; 101. Opening; 102. Battery compartment; 103. Electrical compartment;

[0038] 104. Air duct compartment; 104a. First air duct compartment; 104b. Second air duct compartment;

[0039] 105a, First Gravity Chamber; 105b, Second Gravity Chamber; 106, Heat Dissipation Vent;

[0040] 110. Cabinet body;

[0041] 111. Top plate; 1111. First guide hole;

[0042] 112. Base plate;

[0043] 113. Back panel; 1131. First air intake grille; 1132. Second air intake grille;

[0044] 114. First side plate; 115. Second side plate; 116. Support strip;

[0045] 117. Baffle; 117a. First baffle; 117b. Second baffle;

[0046] 118a, First slide groove; 118b, Second slide groove;

[0047] 119. Shelf;

[0048] 120. First cabinet door;

[0049] 130. Second cabinet door; 131. Vent grille;

[0050] 132. Power indicator light; 133. Running indicator light;

[0051] 134. Fault indicator light; 135. Emergency stop button;

[0052] 20. Heat dissipation components;

[0053] 210. Refrigeration plate;

[0054] 2100, First liquid cooling channel; 2101, First liquid inlet; 2102, First liquid outlet;

[0055] 220a, First Radiator;

[0056] 220b, second radiator; second liquid cooling channels 2200a, 2200b;

[0057] 230. Pump body;

[0058] 240. Liquid inlet pipe; 241. First liquid inlet pipe; 242. Second liquid inlet pipe;

[0059] 250. Liquid outlet pipe; 260. Liquid return pipe; 270. PTC heater;

[0060] 30. Photovoltaic modules;

[0061] 310. Cover plate;

[0062] 311. First cover plate; 3111. First mounting structure;

[0063] 312. Second cover plate; 3121. Second mounting structure;

[0064] 320. Photovoltaic panel; 321. First photovoltaic panel; 322. Second photovoltaic panel;

[0065] 330a, First drive mechanism;

[0066] 331a, First motor; 332a, First rotating shaft; 333a, First support block;

[0067] 334a, First transmission assembly; 3341a, First driving wheel; 3342a, First driven wheel;

[0068] 330b, Second drive mechanism;

[0069] 331b, Second motor; 332b, Second rotating shaft; 333b, Second support block;

[0070] 334b, Second transmission assembly; 3341b, Second driving wheel; 3342b, Second driven wheel;

[0071] 340. Third photovoltaic panel;

[0072] 40a. First cleaning component;

[0073] 410a, First scraper;

[0074] 420a, First lifting mechanism; 421a, First traction component; 422a, First hook;

[0075] 430a, First scraper; 440a, First connecting line; 450a, First counterweight;

[0076] 40b, Second cleaning component;

[0077] 410b, Second scraper;

[0078] 420b, Second lifting mechanism; 421b, Second traction component;

[0079] 430b, Second scraper; 440b, Second connecting line; 450b, Second counterweight. Detailed Implementation

[0080] It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The term "vertical" and similar expressions used in this specification are for illustrative purposes only.

[0081] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items. Unless otherwise specified, the term "plural" in this application refers to two or more.

[0082] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0083] Please refer to Figures 1 and 2. Figure 1 is a perspective view of an energy storage device 100 provided in an embodiment of this application, and Figure 2 is a perspective view of the energy storage device with its cabinet in an open state. The energy storage device 100 includes a cabinet 10, a heat dissipation assembly 20, a photovoltaic module 30, and cleaning components 40a and 40b. The cabinet 10 provides structural support and installation space for the energy storage system. The photovoltaic module 30 is located outside the cabinet 10 and is used to convert external light energy into electrical energy to power the energy storage system. The heat dissipation assembly 20 is located inside the cabinet 10 and is used to dissipate and regulate the heat generated by the energy storage device during charging and discharging. The cleaning components 40a and 40b are located inside the cabinet 10 and cooperate with the heat dissipation assembly 20 to periodically clean the heat sink of the heat dissipation assembly 20 to prevent dust accumulation from affecting heat dissipation efficiency. Through the above structural configuration, the energy storage device can meet the needs of power generation, energy storage, heat dissipation, and maintenance during long-term operation.

[0084] In some embodiments, as shown in FIG3, the rack 10 includes a rack body 110, which includes a top plate 111, a bottom plate 112, a back plate 113 and two side plates connected between the top plate 111 and the bottom plate 112. The top plate 111, the bottom plate 112, the back plate 113 and the two side plates together enclose the rack body 110 with an opening 101. As shown in FIG4A and FIG4B, a battery compartment 102 is provided inside the rack body 110. The battery compartment 102 is used to accommodate energy storage cells 200. At least one air duct compartment 104 is formed between the battery compartment 102 and the two side plates. The air duct compartment 104 is used to arrange heat sinks and form air circulation channels. Heat dissipation vents 106 are provided on the side plates at positions corresponding to the heat sinks. As shown in Figures 5 and 6, the heat dissipation assembly 20 includes a cooling plate 210 with a first liquid cooling channel 2100 and a radiator with second liquid cooling channels 2200a and 2200b. The cooling plate 210 is disposed within the battery compartment 102 and is used to support the battery cell 200. The first liquid cooling channel 2100 and the second liquid cooling channels 2200a and 2200b are connected through a liquid outlet pipe 250. The cleaning assemblies 40a and 40b include at least one scraper, which is movably disposed within the air duct compartment 104 and in contact with the radiator. The photovoltaic module 30 is installed on the side of the top plate 111 facing away from the bottom plate 112, and the photovoltaic module 30 is electrically connected to the battery cell 200. By forming an air duct 104 between the battery compartment 102 and the side panel, and placing the radiator inside the air duct 104, and setting heat dissipation vents 106 at corresponding positions on the side panel, the heat after heat exchange by the coolant can be quickly discharged through the air duct 104. At the same time, the radiator can be cleaned with a scraper, which can keep the heat dissipation channel unobstructed in dusty environments, thereby avoiding the degradation of heat dissipation performance caused by radiator blockage.

[0085] For ease of description, the two side panels are defined as the first side panel 114 and the second side panel 115, respectively. The direction from the first side panel 114 to the second side panel 115 is defined as the width direction of the cabinet 10, the direction from the bottom panel 112 to the top panel 111 is defined as the height direction of the cabinet 10, and the direction from the back panel 113 to the opening 101 is defined as the depth direction of the cabinet 10.

[0086] In some embodiments, as shown in FIG4A, an electrical compartment 103 is also provided inside the main body 110 of the cabinet. The battery compartment 102 and the electrical compartment 103 are arranged sequentially along the height direction of the cabinet 10. The electrical compartment 103 is used to install electrical components, such as AC devices, PCS, DC / DC converters, etc. By independently arranging the electrical components in the electrical compartment 103, the thermal impact of the working heat of the battery cell 200 on the electrical components can be reduced. At the same time, it is convenient to independently dissipate heat and maintain the electrical components, thereby improving the safety of the overall machine operation.

[0087] In some embodiments, at least one gravity chamber is formed between the electrical compartment 103 and the two side panels, and a portion of the cleaning components is disposed within the gravity chamber.

[0088] In some embodiments, as shown in Figures 4A and 7, the back panel 113 is provided with a first air intake grille 1131 at a position corresponding to the air duct compartment 104. The cabinet 10 includes a baffle 117, which is used to close the end of the air duct compartment 104 near the opening 101, so that outside air can only enter the air duct compartment 104 through the first air intake grille 1131 and flow through the radiator before being discharged from the heat dissipation port 106. This forms a stable and controllable airflow path in the air duct compartment 104, thereby improving the heat exchange efficiency between the air and the radiator and reducing the amount of outside dust entering the interior of the air duct compartment 104 from the opening 101.

[0089] In some embodiments, the cabinet 10 includes a first cabinet door 120, which is rotatably connected to the battery compartment 102. The first cabinet door 120 is used to open and close the battery compartment 102 to enclose the battery cell 200 inside the battery compartment 102 for protection.

[0090] In some embodiments, as shown in FIG2, the cabinet 10 includes a second cabinet door 130, which is rotatably connected to the cabinet body 110 and is used to open and close the opening 101. By respectively providing a first cabinet door 120 for opening and closing the battery compartment 102 and a second cabinet door 130 for opening and closing the cabinet body 110, independent maintenance of other components inside the cabinet 10 can be achieved while ensuring the safe sealing of the battery cells 200, thus improving maintenance convenience.

[0091] In some embodiments, as shown in Figures 2 and 7, a second air intake grille 1132 is provided at a position corresponding to the electrical compartment 103 on the back panel 113, and an air outlet grille 131 is provided on the second cabinet door 130. External air is drawn in through the second air intake grille 1132 and discharged through the air outlet grille 131 to dissipate heat from the electrical compartment 103.

[0092] In some embodiments, as shown in FIG8, the heat dissipation assembly 20 includes a pump body 230, an inlet pipe 240 connected between the pump body 230 and the first liquid cooling channel 2100, and a return pipe 260 connected between the second liquid cooling channels 2200a, 2200b and the pump body 230. The pump body 230 and the inlet pipe 240 are both disposed within the battery compartment 102. The pump body 230 is configured to deliver coolant to the cooling plate 210 via the inlet pipe 240, and after passing through the radiator, return coolant to the pump body 230 via the return pipe 260, thereby forming a coolant circulation path. By driving the coolant to circulate between the cooling plate 210 and the radiator through the pump body 230, continuous heat dissipation from the battery cell 200 can be achieved, reducing the risk of local heat accumulation.

[0093] In some embodiments, the coolant is a 50% ethylene glycol aqueous solution, which has good specific heat capacity and low-temperature flow properties, and is suitable for energy storage systems to operate under different ambient temperatures.

[0094] In some embodiments, referring to FIG9, the first liquid cooling channel 2100 includes at least two first liquid inlets 2101, and the liquid inlet pipe 240 includes a first liquid inlet pipe 241 and at least two second liquid inlet pipes 242. The first liquid inlet pipe 241 is connected to the pump body 230, and the second liquid inlet pipes 242 are connected between the first liquid inlet pipe 241 and the first liquid inlets 2101. The first liquid outlet 2102 of the first liquid cooling channel 2100 is connected to the second liquid cooling channels 2200a and 2200b via the liquid outlet pipe 250. By providing multiple first liquid inlets 2101, coolant can enter the interior of the first liquid cooling channel 2100 from different positions of the cooling plate 210, thereby improving the flow distribution of coolant in the first liquid cooling channel 2100, reducing local flow rate unevenness or stagnation caused by liquid supply from a single first liquid inlet 2101, and facilitating the uniform removal of heat generated by the battery cell 200. Meanwhile, multiple first liquid inlets can form a parallel liquid supply structure with multiple second liquid inlet pipes 242, reducing the flow resistance of a single pipe and improving the stability of coolant circulation.

[0095] In this embodiment, as shown in FIG6, the first liquid cooling channel 2100 includes two independent flow paths. Each flow path extends from the central region of the cooling plate 210 to the edge region, and each flow path includes a first liquid inlet 2101 and a first liquid outlet 2102. The first liquid inlet 2101 of one flow path is located on the side of the cooling plate 210 near the first side plate 114, and the first liquid inlet 2101 of the other flow path is located on the side of the cooling plate 210 near the second side plate 115. Correspondingly, the first liquid outlet 2102 is also located on the cooling plate 210 near the first side plate 114 and the second side plate 115, respectively. During operation, the coolant enters the corresponding flow path from the first liquid inlets 2101 located on both sides of the cooling plate 210, and diffuses and flows towards the central region along the width direction of the cooling plate 210. Then, it flows back and forth along the depth direction inside the cooling plate 210, and finally flows out through the corresponding first liquid outlet 2102. By configuring the first liquid cooling channel 2100 as a multi-path structure extending from the central region to the edge region, the flow range of the coolant can cover the main heat exchange area of ​​the cooling plate 210, thereby avoiding the coolant from concentrating in local areas and improving the overall temperature uniformity of the cooling plate 210. Furthermore, since the two flow paths correspond to the liquid inlet and liquid outlet arrangements on both sides of the cooling plate 210, the coolant forms a symmetrical flow state inside the cooling plate 210, which helps to reduce the temperature difference between different cells 200 and improve the overall thermal management capability of the liquid cooling system for the cells 200.

[0096] In some embodiments, the heat dissipation assembly 20 includes a plurality of cooling plates 210, which are spaced apart within the battery compartment 102, and each cooling plate 210 carries a battery cell 200. Further, a plurality of support strips 116 are spaced apart on the inner wall of the battery compartment 102 (as shown in FIG4A), and a cooling plate 210 is supported by a support strip 116 to achieve reliable support for the cooling plate 210 and the battery cell 200.

[0097] In some embodiments, each first liquid cooling channel 2100 is connected to the first liquid inlet channel 241 via the second liquid inlet channel 242. Further, the heat dissipation assembly 20 includes a plurality of liquid outlet channels 250, and the first liquid outlet of each first liquid cooling channel 2100 is connected to the second liquid cooling channels 2200a and 2200b via the liquid outlet channel 250.

[0098] It is understood that the second liquid cooling channels 2200a and 2200b include multiple second liquid inlets, and a liquid outlet pipe 250 is connected between the first liquid outlet 2102 and the second liquid inlets of the second liquid cooling channels 2200a and 2200b.

[0099] In some embodiments, as shown in FIG8, the heat dissipation assembly 20 includes a PTC heater 270, which is connected between the pump body 230 and the first liquid inlet pipe 241 to heat the coolant flowing into the cooling plate 210 in a low-temperature environment, thereby heating the battery cell 200 in reverse through the liquid cooling circuit, so as to prevent the battery cell 200 from being unable to charge and discharge normally due to excessively low temperature under low-temperature conditions.

[0100] In some embodiments, as shown in FIG4B, a first air duct chamber 104a and a second air duct chamber 104b are formed between the battery compartment 102 and the second side plate 115 and the first side plate 114, respectively. Both the first air duct chamber 104a and the second air duct chamber 104b are provided with radiators and scrapers, and the scrapers are in contact with the corresponding radiators. For ease of description, the radiator and scraper provided in the first air duct chamber 104a are defined as the first radiator 220a and the first scraper 410a, respectively, and the radiator and scraper provided in the second air duct chamber 104b are defined as the second radiator 220b and the second scraper 410b, respectively. The first radiator 220a has a second liquid cooling channel 2200a, and the second radiator 220b has a second liquid cooling channel 2200b. Further, the return liquid pipe 260 is connected to the pump body 230, and the return liquid pipe 260 is connected to the second liquid outlet of the second liquid cooling channel 2200a and the second liquid cooling channel 2200b, respectively. By setting a first air duct compartment 104a and a second air duct compartment 104b on both sides of the battery compartment 102, and independently setting a radiator and scraper in each air duct compartment, the heat of the battery compartment 102 can be released to both sides at the same time, reducing the heat dissipation load on one side and reducing the risk of local overheating.

[0101] In some embodiments, the first side plate 114 is provided with a heat dissipation port 106 at the position corresponding to the first heat sink 220a, and the second side plate 115 is provided with a heat dissipation port 106 at the position corresponding to the second heat sink 220b.

[0102] In some embodiments, as shown in FIG4A, the baffle 117 includes a first baffle 117a and a second baffle 117b. The first baffle 117a is installed on the side of the first air duct chamber 104a away from the back plate 113 to close the side of the first air duct chamber 104a near the opening 101. The second baffle 117b is installed on the side of the second air duct chamber 104b away from the back plate 113 to close the side of the second air duct chamber 104b near the opening 101, so that the two air duct chambers form independent airflow channels, avoid mutual airflow interference, and improve their respective heat dissipation efficiency.

[0103] In some embodiments, as shown in Figures 1 and 10, the photovoltaic module 30 has a first state and a second state, and the cleaning module is configured such that the photovoltaic module 30 drives the scraper to move during the switching between the first state and the second state. It should be noted that the first state here refers to the non-operating state, and the second state refers to the operating state.

[0104] In some embodiments, the photovoltaic module 30 includes a cover plate 310 and a photovoltaic panel 320. The photovoltaic panel 320 is fixed to the cover plate 310. The cover plate 310 is rotatably connected to the top plate 111 on the side opposite to the bottom plate 112 and can rotate relative to the top plate 111 between a first position and a second position. In the first position, the photovoltaic module 30 is in a first state, the cover plate 310 covers the top plate 111, and the photovoltaic panel 320 is located between the cover plate 310 and the top plate 111. In the second position, the photovoltaic module 30 is in a second state, and the cover plate 310 is flipped open relative to the top plate 111 to expose the photovoltaic panel 320 to the external environment. By positioning the photovoltaic panel 320 between the cover plate 310 and the top plate 111 in the non-working state, the photovoltaic panel 320 can be protected against rain, dust, and impact, thus extending the service life of the photovoltaic module 30.

[0105] In some embodiments, the cover plate 310 has a rotation range of 0°-180°. That is, the photovoltaic panel 320 is in a folded and hidden state in the first position, and in an unfolded and exposed state in the second position.

[0106] In some embodiments, the photovoltaic module 30 includes a drive mechanism mounted on the cabinet body 110, which drives the cover plate 310 to rotate between a first position and a second position.

[0107] In some embodiments, the drive mechanism includes a motor, a rotating shaft, and a support block. The rotating shaft is fixedly connected to the cover plate 310, and the support block is fixed to the top plate 111. The support block is provided with a rotating hole. One end of the rotating shaft is rotatably connected to the rotating hole, and the other end of the rotating shaft is connected to the output end of the motor, thereby driving the rotating shaft and the cover plate 310 to rotate together through the motor.

[0108] In some embodiments, the drive mechanism further includes a transmission assembly, and the output end of the motor is connected to the rotating shaft via the transmission assembly.

[0109] In some embodiments, the transmission assembly includes a driving wheel and a driven wheel, the driving wheel being coaxially fixed to the output shaft of the motor, the driving wheel and the driven wheel meshing, and the driven wheel being coaxially fixed to the rotating shaft.

[0110] In some embodiments, the cover plate 310 includes a first cover plate 311 and a second cover plate 312, the photovoltaic panel 320 includes a first photovoltaic panel 321 and a second photovoltaic panel 322, the first photovoltaic panel 321 is fixed to the first cover plate 311, the second photovoltaic panel 322 is fixed to the second cover plate 312, the two side plates include a first side plate 114 and a second side plate 115, the first cover plate 311 is rotatably connected to the side of the top plate 111 near the first side plate 114, and the second cover plate 312 is rotatably connected to the side of the top plate 111 near the second side plate 115; in the first In one position, the second cover plate 312 covers the top plate 111, and the first cover plate 311 covers the second cover plate 312. The second photovoltaic panel 322 is located between the top plate 111 and the second cover plate 312, and the first photovoltaic panel 321 is located between the first cover plate 311 and the second cover plate 312. In another position, the first cover plate 311 is flipped open relative to the top plate 111 to expose the first photovoltaic panel 321 to the external environment, and the second cover plate 312 is also flipped open relative to the top plate 111 to expose the second photovoltaic panel 322 to the external environment. By setting the first cover plate 311 and the second cover plate 312 and stacking them, more photovoltaic panels 320 can be arranged on the limited area of ​​the top plate 111, increasing the installed capacity of the photovoltaic module 30. At the same time, by using a tiered flipping mechanism (when in the open state, the first cover plate flips first, and the second cover plate flips later), the unfolding and folding process of the photovoltaic panels 320 is made smoother, which helps to reduce structural impact and wear.

[0111] In some embodiments, the photovoltaic module 30 includes two driving mechanisms, which drive the first cover plate 311 and the second cover plate 312 to rotate respectively. Each driving mechanism includes the motor, rotating shaft, support block and transmission components described above.

[0112] For ease of description, the two driving mechanisms are defined as the first driving mechanism 330a and the second driving mechanism 330b. The first driving mechanism 330a is used to drive the first cover plate 311 to rotate between the first position and the second position, and the second driving mechanism 330b is used to drive the second cover plate 312 to rotate between the first position and the second position.

[0113] Specifically, as shown in Figures 4A, 10, and 11, the first driving mechanism 330a includes a first motor 331a, a first rotating shaft 332a, and a first support block 333a. The first rotating shaft 332a is fixedly connected to the first cover plate 311, and the first support block 333a fixes the top plate 111. The first support block 333a is provided with a first rotating hole. One end of the first rotating shaft 332a is rotatably connected to the first rotating hole, and the other end of the first rotating shaft 332a is connected to the output end of the first motor 331a. Thus, the first motor 331a drives the first rotating shaft 332a and the first cover plate 311 to rotate together. The second drive mechanism 330b includes a second motor 331b, a second rotating shaft 332b, and a second support block 333b. The second rotating shaft 332b is fixedly connected to the second cover plate 312, and the second support block 333b fixes the top plate 111. The second support block 333b is provided with a second rotating hole. One end of the second rotating shaft 332b is rotatably connected to the second rotating hole, and the other end of the second rotating shaft 332b is connected to the output end of the second motor 331b, thereby driving the second rotating shaft 332b and the second cover plate 312 to rotate together through the second motor 331b. Further, the first drive mechanism 330a includes a first transmission assembly 334a, and the second drive mechanism 330b includes a second transmission assembly 334b. The first motor 331a is connected to the first rotating shaft 332a through the first transmission assembly 334a, and the second motor 331b is connected to the second rotating shaft 332b through the second transmission assembly 334b. Further, the first transmission assembly 334a includes a first driving wheel 3341a and a first driven wheel 3342a. The first driving wheel 3341a is coaxially fixed to the output shaft of the first motor 331a, and the first driving wheel 3341a and the first driven wheel 3342a mesh with each other. The first driven wheel 3342a is coaxially fixed to the first rotating shaft 332a. The second transmission assembly 334b ​​includes a second driving wheel 3341b and a second driven wheel 3342b. The second driving wheel 3341b is coaxially fixed to the output shaft of the second motor 331b, and the second driving wheel 3341b and the second driven wheel 3342b mesh with each other. The second driven wheel 3342b is coaxially fixed to the second rotating shaft 332b.

[0114] It should be noted that when the photovoltaic module 30 is in the first state, both the first cover plate 311 and the second cover plate 312 are in the first position. At this time, the second cover plate 312 covers the top plate 111, and the first cover plate 311 covers the second cover plate 312. When the photovoltaic module 30 is in the second state, both the first cover plate 311 and the second cover plate 312 are in the second position. At this time, the first cover plate 311 and the second cover plate 312 are flipped to the open state in sequence.

[0115] In some embodiments, as shown in FIG12, the photovoltaic module 30 further includes a third photovoltaic panel 340, which is fixed to the top plate 111. In a first position, the third photovoltaic panel 340 is located between the top plate 111 and the second photovoltaic panel 322. By adding the third photovoltaic panel 340, the photovoltaic panels 320 can absorb light energy and generate electricity in the unfolded state, thereby improving the power generation capacity of the energy storage device without increasing the floor space of the cabinet 10. At the same time, when the cover plate 310 is folded, the third photovoltaic panel 340, the first photovoltaic panel 321, and the second photovoltaic panel 322 are all shaded, which is beneficial for centralized protection of the photovoltaic module 30 and reduces the risk of damage to the photovoltaic panels 320 caused by environmental factors.

[0116] In some embodiments, as shown in FIG10, cleaning components 40a and 40b include a first cleaning component 40a and a second cleaning component 40b, respectively, to clean the radiators within the first air duct chamber 104a and the second air duct chamber 104b. Specifically, the first cleaning component 40a includes a first scraper 410a, and the second cleaning component 40b includes a second scraper 410b. The first scraper 410a is movably disposed within the first air duct chamber 104a and in contact with the first radiator 220a, and the second scraper 410b is movably disposed within the second air duct chamber 104b and in contact with the second radiator 220b. The first cleaning component 40a is configured such that the photovoltaic module 30 drives the first scraper 410a to move during the switching from a first state to a second state or from a second state to a first state. The second cleaning component 40b is configured such that the photovoltaic module 30 drives the second scraper 410b to move during the switching from a first state to a second state or from a second state to a first state.

[0117] In some embodiments, as shown in FIG13, the first cleaning component 40a includes a first lifting mechanism 420a. A portion of the first lifting mechanism 420a is provided with a first air duct chamber 104a. The first lifting mechanism 420a is linked to the first cover plate 311 so that during the rotation of the first cover plate 311 between a first position and a second position, the first scraper 410a is driven to move up and down along the height direction of the cabinet 10 to clean the first radiator 220a. Further, the first lifting mechanism 420a includes a first traction member 421a. The top plate 111 is provided with a first guide hole 1111 through which the first traction member 421a passes. One end of the first traction member 421a is connected to the first cover plate 311, and the other end of the first traction member 421a is connected to the first scraper 410a through the first guide hole 1111. By structurally linking the first lifting mechanism with the flipping action of the first cover plate 311, the first scraper automatically completes the cleaning of the first radiator during the flipping of the first cover plate 311, eliminating the need for a separate cleaning drive device and reducing system complexity.

[0118] In some embodiments, the first traction member 421a is a traction rope. Further, the first scraper 410a is provided with a first hook 422a, and the first traction member 421a is connected to the first scraper 410a through the first hook 422a.

[0119] In some embodiments, as shown in FIG12, a first mounting structure 3111 is provided on the first cover plate 311, and a first traction member 421a is fitted along the first mounting structure 3111. The first mounting structure 3111 is used to install and constrain the first traction member 421a. The first mounting structure 3111 can be a slot, an arc groove, a positioning post, or a combination thereof, so that the first traction member 421a maintains a longer fitting path with the first cover plate 311 during the flipping process, thereby reducing the free suspension length of the first traction member 421a between the first cover plate 311 and the first guide hole 1111, which is beneficial to improving the stability of the first traction member 421a during the transmission process and reducing the risk of the first traction member 421a swaying or shaking. Further, the first lifting mechanism 420a includes at least two first traction members 421a, which are arranged at intervals, and the number of first guide holes 1111 corresponds one-to-one with the number of first traction members 421a. For example, the first lifting mechanism 420a includes two first traction members 421a, wherein the first traction member 421a is connected to the side of the first cover plate 311 near the opening 101, and the other first traction member 421a is connected to the side of the first cover plate 311 near the back plate 113.

[0120] Similarly, as shown in Figures 12 and 14, the second cleaning component 40b includes a second lifting mechanism 420b. A portion of the second lifting mechanism 420b is provided with a second air duct chamber 104b. The second lifting mechanism 420b is linked to the second cover plate 312, so that during the rotation of the second cover plate 312 between the first and second positions, it drives the second scraper 410b to move up and down along the height direction of the cabinet 10 to clean the second radiator 220b. Further, the second lifting mechanism 420b includes a second traction member 421b. The top plate 111 is provided with a second guide hole (not shown) through which the second traction member 421b passes. One end of the second traction member 421b is connected to the second cover plate 312, and the other end of the second traction member 421b is connected to the first scraper 410a via the first guide hole 1111. Furthermore, the second cover plate 312 is provided with a second mounting structure 3121, and the second traction member 421b is fitted along the second mounting structure 3121. The second mounting structure 3121 is used to install and constrain the second traction member 421b. The second mounting structure 3121 can be a slot, an arc groove, a positioning post, or a combination thereof, so that the second traction member 421b maintains a longer fitting path with the second cover plate 312 during the flipping process, thereby reducing the free suspension length of the second traction member 421b between the second cover plate 312 and the second guide hole. This helps to improve the stability of the second traction member 421b during the transmission process and reduces the risk of the second traction member 421b swaying or shaking.

[0121] In some embodiments, the second traction member 421b is a traction rope. Further, the second scraper 410b is provided with a second hook 422b, and the second traction member 421b is connected to the second scraper 410b through the second hook 422b.

[0122] In some embodiments, a first groove 118a is provided in the first air duct compartment 104a along the height direction of the first air duct compartment (along the height direction of the rack 10), and a second groove 118b is provided in the second air duct compartment 104b along the height direction of the second air duct compartment (along the height direction of the rack 10). A first scraper 410a is slidably connected to the first groove 118a, and a second scraper 410b is slidably connected to the second groove 118b. By providing grooves in the air duct compartments to limit the movement direction of the scrapers, it is ensured that the scraper always maintains effective contact with the heat sink.

[0123] In some embodiments, when the first cover plate 311 is in the first position, the first scraper 410a contacts the bottom of the first chute 118a; when the first cover plate 311 is in the second position, the first scraper 410a contacts the top of the first chute 118a. Similarly, when the second cover plate 312 is in the first position, the second scraper 410b contacts the bottom of the second chute 118b; when the second cover plate 312 is in the second position, the second scraper 410b contacts the top of the second chute 118b.

[0124] In some embodiments, a first scraper 410a is provided with a first scraper 430a on the side near the first radiator 220a, and the first scraper 430a is in contact with the fins of the first radiator 220a. A second scraper 410b is provided with a second scraper 430b on the side near the second radiator 220b, and the second scraper 430b is in contact with the fins of the second radiator 220b. By providing scrapers on the scrapers, dust and dirt on the surface of the radiator fins can be brushed away during the movement of the scrapers, thereby improving the long-term heat dissipation performance of the radiator.

[0125] In some embodiments, the scraper is made of a wear-resistant and soft material to reduce damage to the radiator fins and ensure long-term stable operation of the equipment.

[0126] In some embodiments, as shown in Figures 4A and 13, the electrical compartment 103, the second side plate 115, and the first side plate 114 respectively form a first gravity compartment 105a and a second gravity compartment 105b. The first cleaning assembly 40a includes a first connecting line 440a and a first counterweight 450a connected to each other. The first counterweight 450a is disposed in the first gravity compartment 105a, and the first gravity compartment 105a has a first positioning hole through which the first connecting line 440a passes. The first connecting line 440a is connected to the first scraper 410a via the first positioning hole. The second cleaning assembly 40b includes a second connecting line 440b and a second counterweight 450b connected to each other. The second counterweight 450b is disposed in the second gravity compartment 105b, and the second gravity compartment 105b has a second positioning hole through which the second connecting line 440b passes. The second connecting line 440b is connected to the second scraper 410b via the second positioning hole. By setting up an independent gravity chamber inside the cabinet 10 and placing the counterweight inside the gravity chamber, the automatic return of the scraper can be achieved by utilizing the weight of the counterweight itself, reducing the reliance on additional drive structures and lowering structural complexity.

[0127] In some embodiments, the first connecting line 440a is connected to the first scraper 410a via the first hook 422a, and the second connecting line 440b is connected to the second scraper 410b via the second hook 422b.

[0128] In some embodiments, when the first cover plate 311 is in the second position, the first counterweight 450a contacts the top of the first gravity chamber 105a; when the first cover plate 311 is in the first position, the first counterweight 450a contacts the bottom of the first gravity chamber 105a. Similarly, when the second cover plate 312 is in the second position, the second counterweight 450b contacts the top of the second gravity chamber 105b; when the second cover plate 312 is in the first position, the second counterweight 450b contacts the bottom of the second gravity chamber 105b.

[0129] In some embodiments, as shown in FIG4A, the cabinet 10 includes a shelf 119 disposed within the cabinet body 110, which divides the interior of the cabinet body into a battery compartment 102, an electrical compartment 103, a first air duct compartment 104a, a second air duct compartment 104b, a first gravity compartment 105a, and a second gravity compartment 105b. Further, support bars 116 are formed on the shelf 119.

[0130] In some embodiments, the heat dissipation component 20 includes a fan structure, which is installed at the heat dissipation port 106 to enhance airflow and improve heat dissipation.

[0131] In some embodiments, the fan structure includes a fan cover, a drive motor, and fan blades. The fan cover is fixedly installed on the side plate away from the radiator, the drive motor is fixedly installed on the inside of the fan cover, and the fan blades are fixedly installed on the rotating shaft of the fan cover, and the drive motor drives the fan blades to rotate.

[0132] In some embodiments, the energy storage device further includes a power management module, a system control module, and a status monitoring module. The power management module is electrically connected to the battery cell 200 and is used to control the charging and discharging of the battery cell 200. The system control module is electrically connected to the power management module, the pump body 230, the drive motor of the fan structure, the first motor 331a, the second motor 331b, and each photovoltaic panel, and is used to coordinate and control the operating status of the heat dissipation components and photovoltaic modules, thereby realizing energy management and operation control of the energy storage device. The status monitoring module is connected to the battery cell 200, the power management module, and the system control module to output corresponding status signals when abnormal operating conditions are detected.

[0133] Furthermore, as shown in Figure 1, a power indicator light 132 is provided on the second cabinet door 130. The power indicator light 132 is electrically connected to the power management module and is used to indicate the power-on status of the energy storage device. For example, when the battery cell 200 is in a charging or discharging state, the power indicator light 132 flashes at a preset frequency to indicate that the energy storage device is exchanging energy; when the battery cell 200 is in a standby state and is not charging or discharging, the power indicator light 132 remains constantly lit or constantly off.

[0134] Furthermore, an operation indicator light 133 is provided on the second cabinet door 130. The operation indicator light 133 is electrically connected to the system control module and is used to indicate the control and operation status of the energy storage device. For example, when the system control module does not execute control commands on the heat dissipation component 20 and the photovoltaic component 30, the operation indicator light 133 is off; when the system control module controls the working status of the heat dissipation component 20 or the state switching of the photovoltaic component 30, the operation indicator light 133 is flashing.

[0135] Furthermore, a fault indicator light 134 is installed on the second cabinet door 130. The fault indicator light 134 is electrically connected to the status monitoring module. When the status monitoring module detects an abnormal operating state of the energy storage device, such as abnormal temperature of the battery cell 200, voltage or current exceeding the preset range, abnormal operation of the heat dissipation component 20, or abnormal control execution, the status monitoring module triggers the fault indicator light 134 to light up or flash, so as to remind the operation and maintenance personnel to check and maintain in a timely manner and reduce the risk of further expansion of the fault.

[0136] Furthermore, an emergency stop button 135 is provided on the second cabinet door 130, which is connected to the control circuit of the system control module or power management module. In emergency situations, such as when a serious abnormal operation of the energy storage device is detected, there is a risk of overheating, an electrical fault occurs, or rapid manual intervention is required, triggering the emergency stop button 135 can quickly interrupt the system control command or disconnect the electrical connection of the battery cell 200, thereby improving the safety of the energy storage device under abnormal operating conditions.

[0137] When the weather is clear or no rain is detected, the first motor 331a drives the first drive wheel 3341a to rotate clockwise, which in turn drives the first driven wheel 3342a to rotate counterclockwise, thereby causing the entire first cover plate 311 to rotate 180° until it is in a horizontal position, thus exposing the first photovoltaic panel 321 on the first cover plate 311 to the environment with its front facing upwards; at the same time, the first traction member 421a pulls the first scraper 410a and the first counterweight 450a upwards, and the first scraper 430a brushes off the dust and dirt on the fins of the first radiator 220a, thus cleaning the fins of the first radiator 220a. After the first cover plate 311 is flipped, the second motor 331b drives the second drive wheel 3341b to rotate counterclockwise, which in turn drives the second driven wheel 3342b meshing with it to rotate clockwise, thereby causing the entire second cover plate 312 to flip 180° until it is in a horizontal position, thus exposing the second photovoltaic panel 322 to the environment with its front facing upwards. At this time, the third photovoltaic panel 340 set on the top plate 111 is also completely exposed to the environment. At the same time, the second traction member 421b pulls the second scraper 410b and the second counterweight 450b to rise, and the second scraper 430b brushes off the dust and dirt on the fins of the second radiator 220b, thus cleaning the fins of the second radiator 220b.

[0138] When raindrops are detected, the second motor 331b drives the second drive wheel 3341b to rotate clockwise, which in turn drives the second driven wheel 3342b to rotate counterclockwise. This causes the entire second cover plate 312 to return to the 0° horizontal position, thus hiding the second photovoltaic panel 322 face down. At this time, the third photovoltaic panel 340 set on the top plate 111 is also completely covered. At the same time, under the influence of the gravity of the second counterweight 450b, the second traction member 421b pulls the second scraper 410b located at the top of the second slide 118b back to the bottom of the second slide 118b. The second counterweight 450b descends, and the second scraper 430b brushes off the dust and dirt on the fins of the second radiator 220b, thus cleaning the fins of the second radiator 220b once again. After the second cover plate 312 flips back to its original position, the first motor 331a drives the first drive wheel 3341a to rotate counterclockwise, which in turn drives the first driven wheel 3342a meshing with it to rotate clockwise, thereby driving the entire first cover plate 311 back to the 0° horizontal position, thus hiding the first photovoltaic panel 321 with its front facing down; at the same time, under the influence of the gravity of the first counterweight 450a, the first traction member 421a pulls the first scraper 410a located at the top of the first slide 118a back to the bottom of the first slide 118a. The first counterweight 450a descends, and the second scraper 430b brushes off the dust and dirt on the fins of the first radiator 220a, once again cleaning the fins of the first radiator 220a.

[0139] When the energy storage system operates at very low power, the heat generated by the battery cell 200 is minimal. At this time, the pump body 230 idles and all fan structures cease operation. The pump body 230 delivers a 50% ethylene glycol aqueous solution through the PTC heater 270 (which is not operating at this time), the first inlet pipe 241, and the second inlet pipe 242 to the first liquid-cooled channel 2100 of the cooling plate 210. This absorbs the heat conducted from the battery cell 200. The solution then delivers the solution through the outlet pipe 250 to the second liquid-cooled channels 2200a and 2200b of the radiator. After being cooled by the radiator, the solution returns to the pump body 230 through the return pipe 260, completing this heat dissipation cycle.

[0140] When the energy storage system operates at its rated power, the heat generated by the battery cell 200 is high. At this time, the pump body 230 operates at 100% of its rated speed, and all fan structures operate at their rated speeds. The pump body 230 delivers a 50% ethylene glycol aqueous solution through the PTC heater 270 (which is not operating at this time), the first liquid inlet pipe 241, and the second liquid inlet pipe 242 to the first liquid cooling channel 2100 of the cooling plate 210. This absorbs the heat conducted from the battery cell 200. The solution is then delivered through the liquid outlet pipe 250 to the second liquid cooling channels 2200a and 2200b of the radiator. After being cooled by the radiator, the solution returns to the pump body 230 through the return pipe 260, completing this heat dissipation cycle.

[0141] When the energy storage system operates in a colder environment, the PTC heater 270 is turned on and operates at its rated power. At this time, the pump body 230 idles and all fan structures stop working. The pump body 230 sends the 50% ethylene glycol aqueous solution heated by the PTC heater 270 to the first liquid cooling channel 2100 of the cooling plate 210 through the first liquid inlet pipe 241 and the second liquid inlet pipe 242, thereby transferring the heat of the heated 50% ethylene glycol aqueous solution to the battery cell 200 to heat the battery cell 200. The 50% ethylene glycol aqueous solution, after having its heat absorbed, is then sent to the second liquid cooling channels 2200a and 2200b of the radiator through the liquid outlet pipe 250. After being cooled by the radiator, it returns to the pump body 230 and the PTC heater 270 to continue the heating cycle of the battery cell 200 until the battery cell 200 can charge and discharge at a normal temperature.

[0142] This application provides an energy storage device that integrates a photovoltaic module 30, a heat dissipation module 20, and a cleaning module into a single device. The automatic cleaning of the heat sink is achieved through the flipping action of the photovoltaic cover plate 310, enabling photovoltaic power generation, shading protection, and heat dissipation maintenance to work collaboratively. On one hand, the combination of liquid and air cooling improves the thermal management capability of the battery cell 200 under different operating conditions. On the other hand, the automatic cleaning action of the cleaning module during equipment operation and the flipping of the cover plate 310 prevents the heat dissipation performance from deteriorating due to dust accumulation, thereby reducing the frequency of manual maintenance and improving the long-term reliability and stability of the energy storage device. Simultaneously, the PTC heater 270 heats the coolant, allowing the energy storage device to operate in low-temperature environments, thus broadening its application scenarios.

[0143] It should be noted that while preferred embodiments of this application are provided in the specification and accompanying drawings, this application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this application; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this application. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this application's specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An energy storage device, characterized in that, include: A server rack includes a rack body, the rack body comprising a bottom plate, a top plate, a back plate and two side plates connected between the bottom plate and the top plate, the bottom plate, the top plate, the back plate and the two side plates together forming an open rack body, a battery compartment is provided inside the rack body, and at least one air duct compartment is formed between the battery compartment and the two side plates; a heat dissipation assembly includes a cooling plate with a first liquid cooling channel and a radiator with a second liquid cooling channel, the radiator being disposed in the air duct compartment, the cooling plate being disposed in the battery compartment and used to support the battery cells, the first liquid cooling channel and the second liquid cooling channel being connected through an outlet pipe; a cleaning assembly includes at least one scraper, the scraper being movably disposed in the air duct compartment and in contact with the radiator; and a photovoltaic module, installed on the side of the top plate facing away from the bottom plate, the photovoltaic module being electrically connected to the battery cells; wherein, the side plates have heat dissipation vents at positions corresponding to the radiator; the photovoltaic module has The system has a first state and a second state. The cleaning component is configured to drive the scraper to move during the process of the photovoltaic module switching from the first state to the second state or from the second state to the first state. The photovoltaic module includes a cover plate and a photovoltaic panel. The photovoltaic panel is fixed to the cover plate, and the cover plate is rotatably connected to the top plate and can rotate relative to the top plate between a first position and a second position. In the first position, the cover plate covers the top plate, the photovoltaic panel is located between the cover plate and the top plate, and the photovoltaic module is in the first state. In the second position, the cover plate is flipped to an open state, exposing the photovoltaic panel to the external environment, and the photovoltaic module is in the second state. The cleaning component includes a lifting mechanism, which is linked to the cover plate. When the cover plate rotates between the first position and the second position, the lifting mechanism drives the scraper to move up and down along the height direction of the air duct chamber.

2. The energy storage device according to claim 1, characterized in that, The heat dissipation assembly includes a pump body, an inlet pipe connecting the pump body and the first liquid cooling channel, and a return pipe connecting the second liquid cooling channel and the pump body. The pump body and the inlet pipe are both located inside the battery compartment. The pump body is configured to deliver coolant to the cooling plate through the inlet pipe, and after passing through the radiator, return coolant to the pump body through the return pipe to form a coolant circulation path.

3. The energy storage device according to claim 1, characterized in that, The main body of the cabinet also includes a baffle for sealing the air duct compartment; the back panel is provided with an air intake grille that communicates with the air duct compartment.

4. The energy storage device according to claim 1, characterized in that, The lifting mechanism includes a traction component. The top plate has a guide hole for the traction component to pass through. One end of the traction component is connected to the cover plate, and the other end of the traction component is connected to the scraper through the guide hole. The cover plate has an installation structure, and the traction component is fitted along the installation structure.

5. The energy storage device according to claim 4, characterized in that, The air duct chamber is provided with a sliding groove along the height direction, and the scraper is slidably connected to the sliding groove; the scraper is provided with a scraping brush on the side of the scraper near the radiator, and the scraping brush contacts the fins of the radiator.

6. The energy storage device according to any one of claims 1-5, characterized in that, The main body of the cabinet is equipped with a gravity chamber located below the air duct chamber; the cleaning component includes interconnected connecting lines and counterweights. One end of the connecting line is connected to the scraper, and the other end passes through a positioning hole in the gravity chamber and connects to the counterweights. The counterweights are housed inside the gravity chamber.

7. The energy storage device according to claim 1, characterized in that, The cover plate includes a first cover plate and a second cover plate, and the photovoltaic panel includes a first photovoltaic panel and a second photovoltaic panel; the first photovoltaic panel is fixed to the first cover plate, and the second photovoltaic panel is fixed to the second cover plate; the two side plates include a first side plate and a second side plate; the first cover plate is rotatably connected to the top plate near the first side plate, and the second cover plate is rotatably connected to the top plate near the second side plate; in the first position, the second cover plate covers the top plate, the first cover plate covers the second cover plate, the second photovoltaic panel is located between the top plate and the second cover plate, and the first photovoltaic panel is located between the first cover plate and the second cover plate; in the second position, the first cover plate is flipped relative to the top plate to an open state, so that the first photovoltaic panel is exposed to the external environment, and the second cover plate is flipped relative to the top plate to an open state, so that the second photovoltaic panel is exposed to the external environment.

8. The energy storage device according to claim 7, characterized in that, The photovoltaic module also includes a third photovoltaic panel, which is fixed to the top plate. At the first position, the third photovoltaic panel is located between the top plate and the second photovoltaic panel.

9. The energy storage device according to claim 7, characterized in that, A first air duct compartment is formed between the battery compartment and the second side panel, and a second air duct compartment is formed between the battery compartment and the first side panel; the radiator and the scraper are provided in both the first air duct compartment and the second air duct compartment, and the scraper contacts the corresponding radiator.

10. The energy storage device according to claim 2, characterized in that, The heat dissipation assembly also includes a PTC heater, which is connected between the pump body and the inlet pipe for heating the coolant.

11. The energy storage device according to claim 1, characterized in that, The cabinet further includes a first cabinet door, which is rotatably connected to the battery compartment for opening and closing the battery compartment; and / or the cabinet includes a second cabinet door, which is rotatably connected to the cabinet body for opening and closing the opening, and the second cabinet door is provided with an air vent grille; and / or the heat dissipation component includes a fan structure, which is installed at the heat dissipation vent.

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