Energy storage power supply

Abstract

The invention discloses an energy storage power supply, which comprises a shell, a radiator and an inverter, and is characterized in that an accommodating groove is formed in the shell; the radiator seals the accommodating groove to form an accommodating cavity; and the inverter is arranged in the accommodating cavity and is thermally coupled with the radiator. According to the energy storage power supply provided by the invention, part of the shell is replaced by the radiator, the radiator and the shell are enclosed to form the closed accommodating cavity, and then the inverter is thermally coupled with the radiator so as to dissipate heat generated in the energy storage power supply, so that the dustproof and waterproof effects are improved, the protection level is improved, and the energy storage power supply is more energy-saving and environment-friendly. The radiator can be directly cleaned through water washing, so that the cleaning difficulty is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage devices, and more specifically, to an energy storage power supply. Background Art

[0002] Energy storage power supplies typically install a fan inside the housing, with numerous cooling holes of varying sizes and shapes opened near the fan. Heat is dissipated through the fan's blowing or suction. However, energy storage power supplies using this structure for heat dissipation typically lack dust and water resistance, resulting in a low level of protection. Furthermore, during the heat dissipation process, dust carried by air passing through the housing accumulates on the heat dissipation structure, making it difficult to clean and impossible to wash away with water, severely impacting heat dissipation performance. Summary of the Invention

[0003] The embodiments of the present application provide an energy storage power supply to solve at least one of the above-mentioned technical problems.

[0004] The energy storage power supply according to the embodiment of the present application includes:

[0005] a housing, wherein the housing is formed with a receiving groove;

[0006] a heat sink, the heat sink sealing the receiving groove to form a receiving cavity;

[0007] an inverter, the inverter being disposed in the accommodating cavity and thermally coupled to the heat sink;

[0008] A fan, the fan being mounted on the radiator and located outside the accommodating cavity, the fan forming a flow of air passing through the radiator;

[0009] A cover plate is provided with an air inlet and an air outlet, and the cover plate is detachably mounted on the radiator. The cover plate has a first state and a second state. In the first state, the cover plate covers the radiator and the fan, and the fan forms a flow of air that flows from the air inlet through the radiator and then flows out of the air outlet; in the second state, the cover plate is separated from the radiator and the radiator is exposed.

[0010] The energy storage power supply provided in the present application replaces part of the outer shell with a radiator, which is enclosed with the shell to form a closed accommodating cavity, and then thermally couples the inverter and the radiator to dissipate heat generated inside the energy storage power supply. This not only helps to improve the dustproof and waterproof effects and enhance the protection level, but the radiator can also be directly cleaned by washing with water, which helps to reduce the difficulty of cleaning and ensure the heat dissipation performance of the energy storage power supply.

[0011] In some embodiments, the heat sink includes a sealing plate and a plurality of first heat dissipation fins, the sealing plate seals the receiving groove, the inverter is thermally coupled to the sealing plate, and the plurality of first heat dissipation fins are radially spaced apart with the midpoint of the sealing plate as the center on the surface of the sealing plate away from the inverter.

[0012] In this way, the first heat dissipation fins can increase the surface area of ​​the radiator, which is beneficial to improving the heat dissipation efficiency of the radiator.

[0013] In some embodiments, a heat dissipation gap is formed between two adjacent first heat dissipation fins, and the radiator also includes a plurality of second heat dissipation fins, which are radially arranged on the surface of the sealing plate away from the inverter with the midpoint of the sealing plate as the center, and each of the second heat dissipation fins is located at one end of the corresponding heat dissipation gap away from the midpoint of the sealing plate.

[0014] In this way, the second heat dissipation fins can further increase the surface area of ​​the heat sink, further improve the heat dissipation efficiency of the heat sink, and at the same time make the air flow in the heat dissipation gap more uniform.

[0015] In some embodiments, one end of the plurality of first heat dissipating fins close to the midpoint of the sealing plate is basically distributed on a first circle centered on the midpoint of the sealing plate, and one end of the plurality of second heat dissipating fins close to the midpoint of the sealing plate is basically distributed on a second circle centered on the midpoint of the sealing plate, and the diameter of the second circle is basically equal to twice the diameter of the first circle.

[0016] In this way, it is possible to avoid adding the second heat dissipation fin between two adjacent first heat dissipation fins, which would cause the gap between the two adjacent first heat dissipation fins to be too small and affect the air intake, thereby reducing the heat dissipation efficiency.

[0017] In some embodiments, one end of the plurality of first heat dissipating fins close to the midpoint of the sealing plate forms a mounting portion, and the fan is mounted in the mounting portion.

[0018] In this way, setting up a fan can assist the radiator in dissipating heat, which is beneficial to further improve the heat dissipation effect of the radiator.

[0019] In some embodiments, the thickness of the second heat dissipation fin is smaller than the thickness of the first heat dissipation fin.

[0020] In this way, providing a thinner second heat dissipation fin is beneficial to reducing the impact on the size of the heat dissipation gap, and at the same time it is more convenient to divide the air in the heat dissipation gap into two streams, thereby reducing the impact on the airflow.

[0021] In some embodiments, the heat sink is arranged at the bottom of the energy storage power supply, and a plurality of supporting parts are provided on the cover plate, and the supporting parts are evenly spaced apart to form a gap between the cover plate and the placement plane of the energy storage power supply.

[0022] In this way, raising the bottom of the energy storage power supply is conducive to allowing more air to flow through the bottom of the energy storage power supply, while also preventing the air outlet from being blocked by the placement surface of the energy storage power supply, affecting the heat dissipation efficiency.

[0023] In some embodiments, the housing further includes a fastener, and the support portion and the cover plate are both fixed to the radiator via the fastener.

[0024] In this way, one fastener is used to fasten the support portion and the cover plate at the same time, which helps to save the number of fasteners used and facilitates the disassembly and assembly of the cover plate and the support portion.

[0025] In some embodiments, the heat sink is an integral structure formed by integrally processing a metal material.

[0026] In this way, the metal radiator has higher heat dissipation efficiency. At the same time, the metal radiator has higher strength and can bear greater weight. In addition, the one-piece processed radiator has better sealing performance.

[0027] In some embodiments, the heat sink is anodized.

[0028] This will help improve the corrosion resistance of the radiator.

[0029] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 is a cross-sectional view of an energy storage power supply according to an embodiment of the present application;

[0032] Figure 2 It is a structural diagram of the energy storage power supply according to the embodiment of the present application;

[0033] Figure 3 is a cross-sectional view of an energy storage power supply according to an embodiment of the present application;

[0034] Figure 4 It is an exploded view of a part of the structure of the energy storage power supply according to the embodiment of the present application;

[0035] Figure 5 It is a structural schematic diagram of a radiator of an energy storage power supply according to an embodiment of the present application;

[0036] Figure 6 It is a structural schematic diagram of a radiator of an energy storage power supply according to an embodiment of the present application;

[0037] Figure 7 It is a structural schematic diagram of the cover plate of the energy storage power supply according to the embodiment of the present application.

[0038] Description of the main component symbols: energy storage power supply 100, shell 10, accommodating cavity 11, sealing groove 12, fastener 13, radiator 20, sealing boss 21, sealing plate 22, first heat dissipation fins 23, heat dissipation gap 24, second heat dissipation fins 25, first circle 26, second circle 27, mounting portion 28, inverter 30, fan 40, cover plate 50, air outlet 51, air inlet 52, support portion 53. DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and are not to be construed as limiting the present invention. In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore are not to be construed as limiting the present invention. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise specifically defined.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, removable connections, or integral connections. They may refer to mechanical connections or electrical connections. They may refer to direct connections or indirect connections through an intermediary, and they may refer to internal communication between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0041] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0042] The disclosure herein provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0043] Energy storage power supplies typically install a fan inside the housing, with numerous cooling holes of varying sizes and shapes opened near the fan. Heat is dissipated through the fan's blowing or suction. However, energy storage power supplies using this structure for heat dissipation typically lack dust and water resistance, resulting in a low level of protection. Furthermore, during the heat dissipation process, dust carried by air passing through the housing accumulates on the heat dissipation structure, making it difficult to clean and impossible to wash with water.

[0044] See also Figure 1 The energy storage power supply 100 of the embodiment of the present application includes a housing 10, a heat sink 20, an inverter 30, a fan 40 and a cover plate 50. The housing 10 is formed with a receiving groove; the heat sink 20 seals the receiving groove to form an receiving cavity 11; the inverter 30 is arranged in the receiving cavity 11, and the inverter 30 is thermally coupled to the heat sink 20. The fan 40 is installed on the heat sink 20 and is located outside the receiving cavity 11. The fan 40 forms a flow of air to flow through the heat sink 20; the cover plate 50 is provided with an air inlet 52 and an air outlet 51. The cover plate 50 is detachably mounted on the heat sink 20. The cover plate 50 has a first state and a second state. In the first state, the cover plate 50 covers the heat sink 20 and the fan 40. The fan 40 forms a flow of air to flow through the heat sink 20 from the air inlet 52 and then out of the air outlet 51; in the second state, the cover plate 50 is separated from the heat sink 20 and the heat sink 20 is exposed.

[0045] The energy storage power supply 100 provided in the present application replaces part of the outer shell with a heat sink 20, which is enclosed with the shell 10 to form a closed accommodating cavity 11, and then thermally couples the inverter 30 with the heat sink 20 to dissipate heat generated inside the energy storage power supply 100. This not only helps to improve the dustproof and waterproof effects and enhance the protection level, but the heat sink 20 can also be directly cleaned by washing with water, which helps to reduce the difficulty of cleaning and ensure the heat dissipation performance of the energy storage power supply 100.

[0046] For details, please refer to Figure 1 and Figure 2 The energy storage power supply 100 is a device that stores electrical energy and releases it when needed. Its primary function is to provide a stable and reliable power supply. When the system needs to store electrical energy, the controller charges the battery pack, which converts the electrical energy into chemical energy for storage. When the system needs to use electrical energy, the controller converts the DC power stored in the battery pack into AC power before outputting it.

[0047] In the embodiment of the present application, the housing 10 is an integrally formed structure, usually in the shape of a box, with a receiving groove formed inside, and a battery pack and several electrical components are usually arranged in the receiving groove.

[0048] In the embodiment of the present application, the radiator 20 is bowl-shaped. A mounting groove is formed on a side of the radiator 20 close to the housing 10 . The mounting groove is opposite to the receiving groove and encloses the receiving cavity 11 .

[0049] See also Figure 3 To enhance the sealing performance of the accommodating cavity 11 formed by the heat sink 20 and the housing 10, a sealing boss 21 is formed on the edge of the mounting groove, and a sealing groove 12 is formed on the edge of the accommodating groove. When the heat sink 20 is mounted on the housing 10, the sealing boss 21 is embedded in the sealing groove 12. This helps to improve the sealing effect. Furthermore, the sealing boss 21 and the sealing groove 12 are a clearance fit or a transition fit.

[0050] In some embodiments, in order to improve the sealing effect of the connection between the radiator 20 and the housing 10 , waterproof glue may be applied to the connection between the radiator 20 and the housing 10 .

[0051] In the embodiment of the present application, the radiator 20 should undergo professional surface treatment to improve its salt spray corrosion resistance to cope with high salt spray environments such as those at the seaside.

[0052] The inverter 30 is a power electronic device whose core function is to convert direct current (DC) into alternating current (AC), and can adjust the output voltage, frequency and waveform (such as pure sine wave, modified sine wave) according to demand. Since there will be some energy loss in the process of power conversion, the inverter 30 will generate a large amount of heat when it is working. If the heat is not dissipated in time, it will cause the inverter 30 to overheat, which will lead to performance degradation at the least and aging or damage of components at the worst, and even pose a great safety hazard. Therefore, providing a radiator 20 to assist in the heat dissipation of such electrical components is conducive to improving the heat dissipation efficiency of the energy storage device. The electrical components include but are not limited to power semiconductors, magnetic components and capacitors.

[0053] In this embodiment, the inverter 30 is mounted within the mounting slot, with the side of the inverter 30 facing away from the circuit board attached to the heat sink 20. The heat sink 20 has corresponding heat dissipation zones corresponding to the various heat-generating components. Furthermore, thermal grease can be applied to the area where the inverter 30 and the heat sink 20 meet to improve heat dissipation.

[0054] In other embodiments, the energy storage power supply 100 may not be provided with the inverter 30 . In this case, the battery pack of the energy storage power supply 100 is thermally coupled to the radiator 20 .

[0055] In the embodiment of the present application, the fan 40 may be a turbo centrifugal fan. The turbo centrifugal fan has a greater wind pressure and air volume, and can quickly discharge the heat generated by the inverter 30 through the heat dissipation fins. This is conducive to the stable operation of the energy storage power supply 100 even in a high temperature environment, avoiding performance degradation or damage due to overheating. In addition, the turbo centrifugal fan is located in this core position, forming a straight-through heat dissipation channel. This design reduces the resistance of the airflow during the heat dissipation process, allowing the hot air to be discharged more smoothly, thereby further improving the heat dissipation efficiency.

[0056] In an embodiment of the present application, the air outlet 51 is located in the middle of the cover 50 and is closely facing the cooling fan. The second seal is set at the edge of the cover 50. There are multiple second seals, and multiple air inlets 52 are evenly spaced around the cover 50 and are set at the edge of the cover 50.

[0057] Furthermore, a dustproof net is provided on the inner side of the cover plate 50 , and the dustproof net cover is provided on the air outlet 51 and the air inlet 52 .

[0058] In an embodiment of the present application, when there is less dust inside the radiator 20 or the heat dissipation effect of the radiator 20 can meet the heat dissipation requirements, the cover 50 is in the first state, that is, the cover 50 covers the radiator 20 and the fan 40, and the fan 40 forms flowing air that flows through the radiator 20 from the air inlet 52 and then flows out from the air outlet 51.

[0059] When a lot of dust accumulates inside the radiator 20 or the heat dissipation effect of the radiator 20 is poor, the cover 50 is in the second state. At this time, the cover 50 is separated from the radiator 20 and the radiator 20 is exposed. The user can directly flush water to the radiator 20 to clear the dust on the radiator 20 or assist the radiator 20 in dissipating heat.

[0060] See also Figures 4 to 6 In some embodiments, the radiator 20 includes a sealing plate 22 and a plurality of first heat dissipation fins 23. The sealing plate 22 seals the receiving groove, the inverter 30 is thermally coupled to the sealing plate 22, and the plurality of first heat dissipation fins 23 are radially spaced apart on the surface of the sealing plate 22 away from the inverter 30 with the midpoint of the sealing plate 22 as the center.

[0061] In this way, the first heat dissipation fins 23 can increase the surface area of ​​the heat sink 20 , which is beneficial to improving the heat dissipation efficiency of the heat sink 20 .

[0062] Specifically, the heat sink 20 further includes first heat dissipation fins 23 disposed on the sealing plate 22. The first heat dissipation fins 23 are also called heat sinks. During the heat dissipation process, the first heat dissipation fins 23 absorb heat and dissipate the heat by convection. During the convection heat dissipation process, the heat dissipation area is mainly determined by the surface area of ​​the first heat dissipation fins 23. The larger the surface area, the better the heat dissipation effect; the smaller the surface area, the worse the heat dissipation effect.

[0063] In an embodiment of the present application, the sealing plate 22 is in the shape of a rectangular plate arranged parallel to the top surface of the battery pack, the first heat dissipation fin 23 is in the shape of a trapezoidal sheet, and the end of the first heat dissipation fin 23 away from the midpoint of the sealing plate 22 can be set to a streamlined chamfer, so that the wind resistance coefficient can be reduced and the air flow can be improved.

[0064] The longer sides of the first heat dissipation fins 23 are connected to the sealing plate 22 . The first heat dissipation fins 23 and the sealing plate 22 are arranged perpendicular to each other. There are multiple first heat dissipation fins 23 , and the multiple first heat dissipation fins 23 are evenly arranged on the sealing plate 22 .

[0065] Furthermore, multiple first cooling fins 23 are radially spaced about the midpoint of the sealing plate 22 on the surface of the sealing plate 22 away from the inverter 30. The straight lines along the lengths of all first cooling fins 23 intersect at a single point, and the angles between any two adjacent first cooling fins 23 are equal. This radial layout aligns with natural convection, allowing cool air to be drawn in through the gaps at the bottom and rise through the fin gaps, forming laminar flow and reducing eddy current losses.

[0066] In some embodiments, a rising guide portion may be provided on the same side of multiple first heat sink fins 23. The design of the rising guide portion can guide air flow, allowing hot air to rise and be discharged more smoothly, while also driving more cold air into the heat sink area, forming an effective convection cycle. In this way, the first heat sink fins 23 can dissipate heat more efficiently, ensuring that the temperature of the device is effectively controlled. Specifically, the first heat sink fins 23 can be bent, and the bending angles and bending positions of the multiple first heat sink fins 23 are the same. After bending, the first heat sink fins 23 are evenly arranged on the sealing plate 22, and the distance between any two adjacent first heat sink fins 23 remains equal.

[0067] See also Figure 5 and Figure 6 In some embodiments, a heat dissipation gap 24 is formed between two adjacent first heat dissipation fins 23. The radiator 20 also includes a plurality of second heat dissipation fins 25. The plurality of second heat dissipation fins 25 are radially arranged on the surface of the sealing plate 22 away from the inverter 30 with the midpoint of the sealing plate 22 as the center. Each second heat dissipation fin 25 is located at one end of the corresponding heat dissipation gap 24 away from the midpoint of the sealing plate 22.

[0068] In this way, the second heat dissipation fins 25 can further increase the surface area of ​​the heat sink 20 , further improve the heat dissipation efficiency of the heat sink 20 , and at the same time make the air flow in the heat dissipation gap 24 more uniform.

[0069] Specifically, the heat sink 20 further includes second heat dissipation fins 25 disposed on the sealing plate 22. The second heat dissipation fins 25, also known as heat sinks, absorb heat and dissipate it through convection during the heat dissipation process. During convection heat dissipation, the heat dissipation area is primarily determined by the surface area of ​​the second heat dissipation fins 25. A larger surface area results in a better heat dissipation effect, while a smaller surface area results in a poorer heat dissipation effect.

[0070] In the embodiment of the present application, the second heat dissipation fin 25 is in a trapezoidal shape, and one end of the second heat dissipation fin 25 away from the midpoint of the sealing plate 22 can be set to a streamlined chamfer, so as to reduce the wind resistance coefficient and improve the air flow.

[0071] The longer sides of the second heat dissipating fins 25 are connected to the sealing plate 22 . The second heat dissipating fins 25 and the sealing plate 22 are arranged perpendicular to each other. There are multiple second heat dissipating fins 25 , and the multiple second heat dissipating fins 25 are evenly arranged on the sealing plate 22 .

[0072] Furthermore, multiple second cooling fins 25 are radially arranged on the surface of the sealing plate 22 away from the inverter 30, centered at the midpoint of the sealing plate 22. The straight lines along the lengths of all second cooling fins 25 intersect at a single point, and the angles between any two adjacent second cooling fins 25 are equal. This radial arrangement aligns with natural convection, drawing cool air through the gaps at the bottom and forming laminar flow as it rises through the gaps between the fins, reducing eddy current losses.

[0073] Furthermore, the second heat dissipation fins 25 are arranged on the bisector of the angle between two adjacent first heat dissipation fins 23 .

[0074] In some embodiments, a rising guide portion may be provided on the same side of multiple second heat sink fins 25. The design of the rising guide portion can guide air flow, allowing hot air to rise and be discharged more smoothly, while also driving more cold air into the heat sink area, forming an effective convection cycle. In this way, the second heat sink fins 25 can dissipate heat more efficiently, ensuring that the temperature of the device is effectively controlled. Specifically, the second heat sink fins 25 can be bent, and the bending angles and bending positions of multiple second heat sink fins 25 are the same. After bending, the second heat sink fins 25 are evenly arranged on the sealing plate 22, and the distance between any two adjacent second heat sink fins 25 remains equal.

[0075] See also Figure 6 In some embodiments, one end of the plurality of first heat dissipating fins 23 close to the midpoint of the sealing plate 22 is basically distributed on a first circle 26 centered on the midpoint of the sealing plate 22, and one end of the plurality of second heat dissipating fins 25 close to the midpoint of the sealing plate 22 is basically distributed on a second circle 27 centered on the midpoint of the sealing plate 22, and the diameter of the second circle 27 is basically equal to twice the diameter of the first circle 26.

[0076] In this way, it is possible to avoid adding the second heat dissipation fin 25 between two adjacent first heat dissipation fins 23 , which would cause the gap between the two adjacent first heat dissipation fins 23 to be too small and affect the air intake, thereby reducing the heat dissipation efficiency.

[0077] Specifically, in the embodiment of the present application, the layout of the first heat dissipation fins 23 and the second heat dissipation fins 25 is conducive to maximizing the heat dissipation area within a limited space and is suitable for a high power density energy storage power supply 100.

[0078] In this embodiment, the first heat sink fins 23 are distributed along the first circle 26 near the midpoint of the sealing plate 22, forming an inner circle heat sink array. This design allows the heat generated by the inverter 30 to be evenly diffused radially along the sealing plate 22 to the first heat sink fins 23, preventing localized heat accumulation.

[0079] Furthermore, the second heat dissipation fins 25 are located on the second circle 27 at the midpoint of the sealing plate 22, forming an outer ring heat dissipation array. This can intercept the hot air flowing out from the gaps between the inner ring fins and extend the heat exchange path through secondary guidance.

[0080] Furthermore, the diameter of the second circle 27 is twice that of the first circle 26, ensuring that the spacing between the outer fins is proportional to that of the inner circle, thereby avoiding turbulence in the radial direction of the airflow.

[0081] In some embodiments, the first heat dissipating fins 23 and / or the second heat dissipating fins 25 may be designed with a radial angle offset of 5°-10°, thereby forming a spiral air flow channel and enhancing the convective heat transfer efficiency.

[0082] In some embodiments, one end of the plurality of first heat dissipating fins 23 close to the midpoint of the sealing plate 22 forms a mounting portion 28 , and the fan 40 is installed in the mounting portion 28 .

[0083] In this way, the fan 40 can assist the radiator 20 in dissipating heat, which is beneficial to further improve the heat dissipation effect of the radiator 20.

[0084] Specifically, in the embodiment of the present application, the mounting portion 28 is located at the midpoint of the sealing plate 22, directly aligned with the heat source of the inverter 30, and the fan can efficiently extract hot air from the heat dissipation gap 24, forming a straight-through heat dissipation channel of "heat source-heat dissipation fins-fan 40".

[0085] In the embodiment of the present application, a wire hole is formed on the sealing plate 22. The fan 40 is electrically connected to the internal battery pack via a wire passing through the wire hole to power the fan 40. Furthermore, after the wires are passed through, the wire hole should be filled with glue to seal the wire hole and prevent dust and moisture from entering the accommodating cavity 11, ensuring the IP67 protection level.

[0086] In some embodiments, the thickness of the second heat dissipation fins 25 is smaller than the thickness of the first heat dissipation fins 23 .

[0087] Thus, providing a thinner second heat dissipation fin 25 is beneficial to reducing the impact on the size of the heat dissipation gap 24, and is more convenient for dividing the air in the heat dissipation gap 24 into two streams, thereby reducing the impact on the airflow.

[0088] Specifically, in this embodiment of the present application, the thickness of the second heat sink fins 25 can be set to 0.6-0.8 times the thickness of the first heat sink fins 23. This helps reduce wind resistance while ensuring structural strength, while also expanding the heat dissipation area and maximizing airflow. For example, the thickness of the first heat sink fins 23 can be set to 1.2-1.5 mm, and the thickness of the second heat sink fins 25 can be set to 0.8-1.0 mm.

[0089] Furthermore, the ratio of the spacing to the thickness of the first heat dissipating fins 23 may be 3:1, and the ratio of the spacing to the thickness of the second heat dissipating fins 25 may be 2:1. This is beneficial for balancing structural strength and air fluidity.

[0090] See also Figure 4 and Figure 7 In some embodiments, the heat sink 20 is disposed at the bottom of the energy storage power supply 100, and a plurality of support portions 53 are provided on the cover plate 50. The support portions 53 are evenly spaced apart to form a gap between the cover plate 50 and the placement plane of the energy storage power supply 100.

[0091] In this way, raising the bottom of the energy storage power supply 100 is conducive to allowing more air to flow through the bottom of the energy storage power supply 100, while also preventing the air outlet 51 from being blocked by the placement plane of the energy storage power supply 100, affecting the heat dissipation efficiency.

[0092] Specifically, in the embodiment of the present application, there are four support portions 53 , and the four support portions 53 are respectively disposed at the four corners of the cover plate 50 .

[0093] In the embodiment of the present application, a fixing groove is provided on the cover plate 50, and the support portion 53 is installed in the fixing groove. The support portion 53 is a thick non-slip silicone pad.

[0094] In some embodiments, an anti-skid structure, such as an anti-skid pattern, is further provided on the support portion 53. The material of the anti-skid pad can be selected from other materials according to actual needs and is not limited here.

[0095] In some embodiments, if the energy storage power supply 100 is relatively lightweight, hemispherical protrusions can be directly stamped out from the bottom of the cover plate 50 as support portions 53 to achieve basic anti-slip and clearance. It should be noted that the hemispherical protrusions directly stamped out from the bottom of the cover plate 50 have insufficient compressive strength and are only suitable for lightweight designs.

[0096] See also Figure 3 In some embodiments, the housing 10 further includes a fastener 13 , and the support portion 53 and the cover plate 50 are both fixed to the radiator 20 via the fastener 13 .

[0097] In this way, one fastener 13 is used to fasten the support portion 53 and the cover plate 50 at the same time, which helps to save the number of fasteners 13 used and facilitates the disassembly and assembly of the cover plate 50 and the support portion 53.

[0098] Specifically, in the embodiment of the present application, the fastener 13 is generally a screw, and fixing holes for passing the fastener 13 are provided on the cover plate 50 and the fastener 13. Correspondingly, a fixing column is provided on the radiator 20, and the fixing column is provided corresponding to the fastening hole. The top surface of the fixing column is provided with a threaded hole for locking the fastener 13.

[0099] Furthermore, the fixing column is usually arranged at the first heat dissipation fin 23 or the second heat dissipation fin 25, or is connected to the first heat dissipation fin 23 and / or the second heat dissipation fin 25. This is conducive to improving the structural strength of the fixing column. At the same time, the fixing column will not block the heat dissipation gap 24, causing poor ventilation of the heat dissipation gap 24, thereby affecting the heat dissipation efficiency.

[0100] In some embodiments, the heat sink 20 is an integral structure formed by integrally processing a metal material.

[0101] In this way, the radiator 20 made of metal has higher heat dissipation efficiency. At the same time, the radiator 20 made of metal has higher strength and can bear a greater weight. In addition, the radiator 20 formed by one-piece processing has better sealing performance.

[0102] Specifically, in the embodiment of the present application, the radiator 20 can be made of ADC12 aluminum alloy (thermal conductivity 96W / m·K, tensile strength 300MPa) and formed in one piece through high-pressure die-casting. The ADC12 aluminum alloy has a high thermal conductivity, which is beneficial to improving thermal conductivity efficiency and is suitable for mass production.

[0103] In the embodiment of the present application, the first heat sink fins 23 and the sealing plate 22 are integrally formed and machined as a single unit. To facilitate demolding of the heat sink 20, a transition fillet is provided at the connection between the first heat sink fins 23 and the sealing plate 22. Furthermore, the distance between two adjacent first heat sink fins 23 should not be too close. Similarly, in the embodiment of the present application, the second heat sink fins 25 and the sealing plate 22 are also integrally formed and machined as a single unit. To facilitate demolding of the heat sink 20, a transition fillet is provided at the connection between the second heat sink fins 25 and the sealing plate 22. Furthermore, the distance between two adjacent second heat sink fins 25 should not be too close.

[0104] In some embodiments, the radiator 20 and the first heat sink fins 23 can be designed as detachable modules and connected by other means, such as friction stir welding (FSW). By replacing the first heat sink fin 23 components of different specifications, they can be adapted to different power inverters 30, thereby improving the versatility of the product. Similarly, the radiator 20 and the second heat sink fins 25 can also be designed as detachable modules and connected by other means. By replacing the second heat sink fin 25 components of different specifications, they can be adapted to different power inverters 30, thereby improving the versatility of the product. It should be noted that processing the sealing plate 22 separately from the first heat sink fins 23 and / or the second heat sink fins 25 is conducive to reducing production costs, but it will lead to an increase in contact thermal resistance, and a certain trade-off needs to be made between the two.

[0105] In some embodiments, the heat sink 20 is anodized.

[0106] This is beneficial to improving the corrosion resistance of the radiator 20 .

[0107] Specifically, performing anodizing treatment on the heat sink 20 can improve the corrosion resistance of the heat sink 20 while increasing the surface emissivity, thereby improving the radiation capacity of the heat sink 20.

[0108] Throughout this specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0109] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, for example, two or three, unless otherwise specifically defined.

[0110] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. An energy storage power supply, characterized in that: include: a housing, wherein the housing is formed with a receiving groove; a heat sink, the heat sink sealing the receiving groove to form a receiving cavity; an inverter, the inverter being disposed in the accommodating cavity and thermally coupled to the heat sink; A fan, the fan being mounted on the radiator and located outside the accommodating cavity, the fan forming a flow of air passing through the radiator; A cover plate is provided with an air inlet and an air outlet, and the cover plate is detachably mounted on the radiator. The cover plate has a first state and a second state. In the first state, the cover plate covers the radiator and the fan, and the fan forms a flow of air that flows from the air inlet through the radiator and then flows out of the air outlet; in the second state, the cover plate is separated from the radiator and the radiator is exposed.

2. The energy storage power supply according to claim 1, characterized in that: The radiator includes a sealing plate and a plurality of first heat dissipation fins, the sealing plate seals the receiving groove, the inverter is thermally coupled to the sealing plate, and the plurality of first heat dissipation fins are radially spaced with the midpoint of the sealing plate as the center on the surface of the sealing plate away from the inverter.

3. The energy storage power supply according to claim 2, characterized in that: A heat dissipation gap is formed between two adjacent first heat dissipation fins. The radiator also includes a plurality of second heat dissipation fins. The plurality of second heat dissipation fins are radially arranged on the surface of the sealing plate away from the inverter with the midpoint of the sealing plate as the center. Each of the second heat dissipation fins is located at one end of the corresponding heat dissipation gap away from the midpoint of the sealing plate.

4. The energy storage power supply according to claim 3, characterized in that: One end of the plurality of first heat dissipating fins close to the midpoint of the sealing plate is basically distributed on a first circle centered on the midpoint of the sealing plate, and one end of the plurality of second heat dissipating fins close to the midpoint of the sealing plate is basically distributed on a second circle centered on the midpoint of the sealing plate, and the diameter of the second circle is basically equal to twice the diameter of the first circle.

5. The energy storage power supply according to claim 4, characterized in that: One end of the plurality of first heat dissipation fins close to the midpoint of the sealing plate forms a mounting portion, and the fan is mounted in the mounting portion.

6. The energy storage power supply according to claim 3, characterized in that: The thickness of the second heat dissipation fins is smaller than the thickness of the first heat dissipation fins.

7. The energy storage power supply according to claim 1, characterized in that: The radiator is arranged at the bottom of the energy storage power supply, and a plurality of supporting parts are arranged on the cover plate. The supporting parts are evenly spaced apart to form a gap between the cover plate and the placement plane of the energy storage power supply.

8. The energy storage power supply according to claim 7, characterized in that: The housing further includes a fastener, and the support portion and the cover plate are both fixed to the radiator via the fastener.

9. The energy storage power supply according to claim 1, characterized in that: The radiator is an integrated structure formed by integrally processing metal material.

10. The energy storage power supply according to claim 9, characterized in that: The radiator is subjected to anodizing treatment.

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