Energy storage device

Abstract

The utility model discloses an energy storage device. The energy storage equipment comprises a shell, a battery module and an inverter. The shell is provided with a first ventilation hole and a handle, the battery module and the inverter are arranged in the shell, the inverter is electrically connected with the battery module, the inverter comprises a shell, the shell is provided with a second ventilation hole, the shell and the handle have an overlapping area in the first direction, and the overlapping area is provided with a flow guide air channel formed between the shell and the handle. The flow guide air channel is suitable for guiding airflow from the first ventilation hole to the second ventilation hole and / or guiding airflow from the second ventilation hole to the first ventilation hole, and the first direction is perpendicular to the height direction of the energy storage equipment. According to the energy storage equipment, the height of the energy storage equipment is reduced to a certain extent, and meanwhile, the flow guide air channel formed between the shell and the handle can guide the airflow into the shell and / or guide the airflow out of the shell, so that the heat dissipation air volume of the inverter is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage equipment technology, and specifically relates to an energy storage device. Background Technology

[0002] In related technologies, as the size and weight of medium-power energy storage devices increase, handles need to be designed to meet users' portability needs. However, the handle design occupies part of the airflow space inside the energy storage device, restricting air circulation and affecting heat dissipation. Utility Model Content

[0003] This utility model provides an energy storage device to solve at least one of the above-mentioned technical problems.

[0004] This utility model provides an energy storage device, comprising:

[0005] The housing is provided with a first ventilation hole and a handle;

[0006] A battery module, wherein the battery module is disposed within the housing;

[0007] An inverter is disposed within the housing and electrically connected to the battery module. The inverter includes a housing with a second ventilation hole. The housing and the handle have an overlapping area along a first direction. The overlapping area has a guide air duct formed between the housing and the handle. The guide air duct is adapted to direct airflow from the first ventilation hole to the second ventilation hole and / or direct airflow from the second ventilation hole to the first ventilation hole. The first direction is perpendicular to the height direction of the energy storage device.

[0008] In the aforementioned energy storage device, the inverter casing and handle have an overlapping area along the first direction, which allows for a reduction in the overall height of the energy storage device when designing the handle. Simultaneously, the airflow duct formed between the casing and handle guides airflow into and / or out of the casing, ensuring adequate cooling airflow for the inverter.

[0009] In some embodiments, the housing includes a first side plate and a second side plate, the first side plate and the second side plate being arranged along the first direction, and both the first side plate and the second side plate being provided with the first ventilation hole.

[0010] In the aforementioned energy storage devices, air circulates between the inside and outside of the device, which improves heat dissipation efficiency to some extent.

[0011] In some embodiments, at least a portion of the handle is located on the first side panel and / or the second side panel.

[0012] Among the aforementioned energy storage devices, it is easy for users to lift or move the energy storage devices.

[0013] In some embodiments, the housing includes a third side panel connected to the first side panel and the second side panel, and the handle includes a recess, a portion of which is located on the first side panel and / or the second side panel, and another portion of which is located on the third side panel.

[0014] The aforementioned energy storage devices improve portability to a certain extent.

[0015] In some embodiments, the recessed portion is connected to the first side plate and / or the second side plate to form a first connection point, and the recessed portion is connected to the third side plate to form a second connection point. The angle between the first connection point and the second connection point and the third side plate is 30 degrees to 60 degrees.

[0016] Among the aforementioned energy storage devices, some can meet ergonomic requirements and form airflow channels with the casing, thereby improving the smoothness of airflow to a certain extent.

[0017] In some embodiments, the surface of the recess facing the housing is a first side that forms the airflow duct;

[0018] The housing includes a first ventilation plate, which has a second ventilation hole. The surface of the first ventilation plate facing the recess is a second side that forms the airflow duct. The first ventilation plate is parallel to the first connecting line.

[0019] In the aforementioned energy storage device, the airflow guided by the air duct between the recess and the first ventilation plate can be made more stable and smooth.

[0020] In some embodiments, the airflow duct extends along the first direction toward the height of the energy storage device.

[0021] The aforementioned energy storage devices make full use of overlapping areas for heat dissipation to a certain extent, further optimizing the heat dissipation effect of the inverter.

[0022] In some embodiments, the handle includes a recess, the surface of which facing the housing forms a first side surface that surrounds the airflow duct, the first side surface being an arc surface.

[0023] The aforementioned energy storage devices can further improve the smoothness of airflow within the air duct.

[0024] In some embodiments, the housing includes a first ventilation plate with a second ventilation hole, the surface of the first ventilation plate facing the handle forming a second side of the airflow duct, and the second side is inclined relative to the height direction of the energy storage device.

[0025] In the aforementioned energy storage device, the components inside the inverter housing can be cooled by airflow flowing along the second ventilation hole and the second side.

[0026] In some embodiments, the housing includes a second ventilation plate connected to the first ventilation plate, the second ventilation plate having a second ventilation hole, and the surface of the second ventilation plate facing the handle forming a third side of the airflow duct, the third side extending along the height direction of the energy storage device.

[0027] In the aforementioned energy storage device, the components inside the inverter housing can be cooled by airflow flowing along the second ventilation hole and the third side.

[0028] In some embodiments, the inverter includes a first element and a second element located within the housing, the first element having a height greater than a preset height, the second element having a height less than the preset height, the second element being located inside the housing corresponding to the overlapping area, and the first element being located inside the housing outside the overlapping area.

[0029] Among the aforementioned energy storage devices, the space utilization rate inside the casing can be improved to a certain extent, and the overall height of the energy storage device can be reduced.

[0030] In some embodiments, the first element includes at least one of a first cooling fan and a heat sink, and the second element includes at least one of an inductor, a safety capacitor, and a transformer.

[0031] In the aforementioned energy storage devices, the positions of components within the inverter housing can be flexibly configured to reduce the overall height of the unit.

[0032] In some embodiments, the energy storage device includes a second cooling fan located between the housing and the casing, and the second cooling fan and the first ventilation hole are arranged along a first direction.

[0033] The aforementioned energy storage device can accelerate airflow at the first ventilation hole to a certain extent, thereby improving the heat dissipation rate of the inverter while also meeting the heat dissipation requirements of the battery management system and battery modules.

[0034] Additional aspects and advantages of the embodiments of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0035] The above and / or additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0036] Figure 1 This is a schematic diagram of the structure of the energy storage device according to an embodiment of the present invention;

[0037] Figure 2 yes Figure 1 A schematic diagram of the cross-section of the energy storage device along the MM line;

[0038] Figure 3 This is an exploded view of the energy storage device according to an embodiment of the present invention;

[0039] Figure 4 This is another exploded view of the energy storage device according to an embodiment of the present invention;

[0040] Figure 5 This is a partial structural schematic diagram of the energy storage device according to an embodiment of the present utility model;

[0041] Figure 6 This is another structural schematic diagram of the energy storage device according to an embodiment of the present utility model;

[0042] Figure 7 yes Figure 6 An enlarged schematic diagram of the N section of the energy storage device;

[0043] Figure 8 This is an exploded view of the inverter according to an embodiment of the present invention;

[0044] Figure 9 This is a partial structural schematic diagram of the inverter according to an embodiment of the present utility model;

[0045] Figure 10 yes Figure 9 A top view of the inverter.

[0046] Explanation of key component reference numerals:

[0047] Overlapping area -10, airflow duct -15;

[0048] Outer shell - 20, first ventilation hole - 21, first side panel - 23, second side panel - 25, third side panel - 27, front panel - 29;

[0049] Handle-30, lifting handle-31, recessed part-33, first side surface-33a;

[0050] Battery module-40, battery rack-41, plastic mounting parts-411, battery cell-43;

[0051] Inverter-50, Second ventilation hole-51, Housing-53, First housing-531, First ventilation plate-531a, Second side-531b, Second housing-533, Second ventilation plate-533a, Third side-533b, First component-55, First cooling fan-551, Heat sink-553, Second component-57, Inductor-571, Safety capacitor-573, Transformer-575, Circuit board-58, Insulating sheet-59;

[0052] BMS-60, Second Cooling Fan-70, Energy Storage Device-100. Detailed Implementation

[0053] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0054] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0055] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0056] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0057] This disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0058] Please see Figures 1 to 10 This utility model provides an energy storage device 100. The energy storage device 100 includes a housing 20, a battery module 40, and an inverter 50. The housing 20 is provided with a first ventilation hole 21 and a handle 30. The battery module 40 and the inverter 50 are disposed inside the housing 20. The inverter 50 is electrically connected to the battery module 40. The inverter 50 includes a housing 53, which is provided with a second ventilation hole 51. The housing 53 and the handle 30 have an overlapping area 10 along a first direction. The overlapping area 10 has a guiding air duct 15 formed between the housing 53 and the handle 30. The guiding air duct 15 is adapted to guide the airflow from the first ventilation hole 21 to the second ventilation hole 51, and / or guide the airflow from the second ventilation hole 51 to the first ventilation hole 21. The first direction is perpendicular to the height direction of the energy storage device 100.

[0059] In the aforementioned energy storage device 100, the inverter 50's housing 53 and handle 30 have an overlapping area 10 along the first direction, which allows for a reduction in the height of the energy storage device 100 to some extent when designing the handle 30. Simultaneously, the airflow duct 15 formed between the housing 53 and handle 30 can guide airflow into and / or out of the housing 53, thereby ensuring the heat dissipation airflow of the inverter 50.

[0060] Specifically, please combine Figures 1 to 4The energy storage device 100 includes a housing 20, a battery module 40, and an inverter 50, wherein the battery module 40 and the inverter 50 are housed within the housing 20, and the battery module 40 is electrically connected to the inverter 50. The housing 20 includes a front panel 29, on which a socket is provided for connecting to an external power source or external electrical equipment. The battery module 40 is composed of multiple battery cells 43 connected in series, parallel, or mixed configurations, and is used to store and release electrical energy. A mixed configuration means that the multiple battery cells 43 are connected in both parallel and series configurations. The inverter 50 is used to convert the direct current (DC) stored in the battery module 40 into alternating current (AC). During charging, an external power source inputs electrical energy into the battery module 40 through wires and sockets, converting the electrical energy into chemical energy stored in the battery cells 43. During discharging, the battery cells 43 convert the stored chemical energy into DC electrical energy, and the inverter 50 converts the DC output from the battery module 40 into AC output for use by external devices. The energy storage device 100 also includes a battery management system 60 (BMS). The battery management system 60 is the intelligent management system of the energy storage device 100, used to monitor, control, and protect the safe and stable operation of the battery module 40. During charging and discharging, the battery management system 60 monitors the status of the battery module 40 and outputs corresponding control commands to ensure the safe and stable operation of the battery module 40.

[0061] In related technologies, portable energy storage devices are increasingly widely used in outdoor power supply, emergency rescue, camping, and home backup power. To improve portability, handles are often added to energy storage devices so that users can easily lift and carry them. However, due to the dense internal electronic components, especially the high-power operation of inverters, battery management systems, and battery packs, energy storage devices generate a lot of heat during operation. The handle design occupies part of the space in the heat dissipation channel of the energy storage device, restricting internal airflow and affecting heat dissipation. This can lead to problems such as decreased performance, shortened lifespan, and even safety hazards. Therefore, there is a need for an energy storage device that optimizes the heat dissipation channel while still having a handle design to solve the above problems.

[0062] In this embodiment of the utility model, please refer to Figures 1 to 4 The energy storage device 100 has a vertical direction in its height direction and a horizontal direction perpendicular to its height direction. The energy storage device 100 includes a housing 20, which optionally uses a high thermal conductivity material (such as aluminum) to improve the heat dissipation effect of the energy storage device 100 to a certain extent.

[0063] The outer casing 20 is provided with a plurality of first ventilation holes 21 and a handle 30, the handle 30 being located above the first ventilation holes 21. Optionally, the plurality of first ventilation holes 21 are provided on both sides of the outer casing 20 along a first direction, and the first ventilation holes 21 are used for heat exchange between the electronic components (including but not limited to the battery module 40, battery management system 60, and inverter 50) inside the outer casing 20 and the external environment through airflow. The number of handles 30 can be specifically limited according to actual conditions, and this utility model does not make a specific limitation in this regard. In one example, please refer to... Figure 1 There are two handles 30, which are respectively located on both sides of the energy storage device 100 along the first direction.

[0064] The inverter 50 includes a housing 53, on which a plurality of second ventilation holes 51 are provided. The second ventilation holes 51 are used to exchange heat between the components inside the inverter 50 and the external environment through airflow. The housing 53 and the handle 30 have an overlapping area 10 along a first direction (e.g., Figure 6 and Figure 7 As shown, the overlapping area 10 allows for a reduction in the space occupied by the handle 30 while maintaining the functional integrity of the energy storage device 100, thereby reducing the height of the energy storage device 100 to some extent.

[0065] The overlapping area 10 has a guide air duct 15 formed between the housing 53 and the handle 30. The guide air duct 15 is used to guide airflow from the first ventilation hole 21 to the second ventilation hole 51, and / or guide airflow from the second ventilation hole 51 to the first ventilation hole 21. In one embodiment, cold air from the external environment can enter the housing 20 of the energy storage device 100 through the first ventilation hole 21, and can be guided by the guide air duct 15 to the second ventilation hole 51 to enter the housing 53 of the inverter 50, so that the cold air can exchange heat with the components inside the inverter 50.

[0066] In one embodiment, hot air inside the housing 53 of the inverter 50 enters the air duct 15 through the second ventilation hole 51, and is guided by the air duct 15 to the first ventilation hole 21 to enter the external environment, so that the hot air exchanges heat with the external environment.

[0067] In one embodiment, cold air from the external environment can enter the housing 20 of the energy storage device 100 through the first ventilation hole 21, and can be guided by the air duct 15 to the second ventilation hole 51 to enter the housing 53 of the inverter 50, so that the cold air exchanges heat with the components inside the inverter 50 to form hot air; then the hot air enters the air duct 15 through the second ventilation hole 51, and is guided by the air duct 15 to the first ventilation hole 21 to enter the external environment, so that the hot air exchanges heat with the external environment.

[0068] exist Figure 6In this embodiment, the outer casing 20 is provided with a guide air duct 15 on each side along the first direction, and each guide air duct 15 corresponds to the position of a handle 30. Cold air from the external environment can enter the interior of the outer casing 20 through the first ventilation hole 21 located on the left side of the outer casing 20, and can be guided by the guide air duct 15 on the left side to the second ventilation hole 51 located on the left side of the casing 53 to enter the casing 53, so that the cold air exchanges heat with the components in the inverter 50, thereby forming hot air; then the hot air enters the guide air duct 15 on the right side through the second ventilation hole 51 located on the right side of the casing 53, and is guided by the guide air duct 15 to the first ventilation hole 21 located on the right side of the outer casing 20 to enter the external environment, so that the hot air exchanges heat with the external environment.

[0069] Therefore, the air duct 15 formed between the housing 53 and the handle 30 can guide airflow into and / or out of the housing 53, making the airflow smooth and ensuring the heat dissipation airflow of the inverter 50 to a certain extent.

[0070] The type, size, and arrangement of the first ventilation hole 21 and the second ventilation hole 51 can be the same or different. The type of the first ventilation hole 21 and the second ventilation hole 51 can be specifically defined according to actual circumstances; this utility model does not impose specific limitations in this regard. In one example, please refer to... Figure 3 The first ventilation hole 21 is elongated (i.e., the gap formed between two louvers), and the second ventilation hole 51 is circular.

[0071] In some embodiments, the housing 20 includes a first side plate 23 and a second side plate 25, the first side plate 23 and the second side plate 25 are arranged along a first direction, and both the first side plate 23 and the second side plate 25 are provided with a first ventilation hole 21.

[0072] This allows air to circulate between the inside and outside of the energy storage device 100, improving heat dissipation efficiency to some extent.

[0073] Specifically, please combine Figure 3 and Figure 4 The first direction is left-right. The first side plate 23 and the second side plate 25 are respectively located on both sides of the energy storage device 100 along the first direction and are arranged opposite to each other to form at least a portion of the outer casing 20, for protecting and supporting the electronic components inside the energy storage device 100. Figure 3 In one embodiment, the first side plate 23 is located on the left side of the energy storage device 100, and the second side plate 25 is located on the right side of the energy storage device 100. Optionally, in other embodiments, the first side plate 23 is located on the right side of the energy storage device 100, and the second side plate 25 is located on the left side of the energy storage device 100.

[0074] Multiple first ventilation holes 21 are provided on the first side plate 23 and the second side plate 25. The first ventilation holes 21 allow air to circulate between the inside and outside of the outer casing 20, thereby carrying away the heat generated when the electronic components are working, which can improve the heat dissipation efficiency of the energy storage device 100 to a certain extent.

[0075] The number of first ventilation holes 21 provided on the first side plate 23 and the number of first ventilation holes 21 provided on the second side plate 25 can be the same or different. The number of first ventilation holes 21 can be specifically limited according to the actual situation, and this utility model does not make a specific limitation in this regard.

[0076] In some embodiments, at least a portion of the handle 30 is located on the first side plate 23 and / or the second side plate 25.

[0077] This makes it easier for users to lift or move the energy storage device 100.

[0078] Specifically, the outer casing 20 of the energy storage device 100 is provided with a handle 30, and at least a portion of the handle 30 is located on the first side plate 23 and / or the second side plate 25 of the outer casing 20. The position and number of handles 30 can be limited according to the structure and usage requirements of the energy storage device 100, and this utility model does not make specific limitations in this regard.

[0079] exist Figure 3 and Figure 4 In this embodiment, the outer casing 20 is provided with two handles 30, which are arranged along a first direction. At least a portion of the left handle 30 is located on the first side plate 23, and at least a portion of the right handle 30 is located on the second side plate 25, so that the user can lift the energy storage device 100 by holding the handles 30 from the left and right sides of the energy storage device 100.

[0080] In one embodiment, the housing 20 is provided with a handle 30 located on the left side of the energy storage device 100, and at least a portion of the handle 30 is located on the first side plate 23, so that the user can grasp the handle 30 from the left side of the energy storage device 100 and lift the energy storage device 100.

[0081] In one embodiment, the housing 20 is provided with a handle 30 located on the right side of the energy storage device 100, and at least a portion of the handle 30 is located on the second side plate 25, so that the user can grasp the handle 30 from the right side of the energy storage device 100 and lift the energy storage device 100.

[0082] It is understood that the connection between the handle 30 and the housing 20 of the energy storage device 100 may be, but is not limited to, a fixed connection or a detachable connection.

[0083] In some embodiments, the housing 20 includes a third side plate 27 connected to the first side plate 23 and the second side plate 25, and the handle 30 includes a recess 33, a portion of which is located on the first side plate 23 and / or the second side plate 25, and another portion of which is located on the third side plate 27.

[0084] This improves the portability of the energy storage device 100 to some extent.

[0085] Specifically, please combine Figures 1 to 4 The outer casing 20 includes a third side plate 27, which is located above and connected to the first side plate 23 and the second side plate 25, thereby forming at least a portion of the outer casing 20 together with the first side plate 23 and the second side plate 25. The handle 30 includes a recess 33, a portion of which is located on the first side plate 23 and / or the second side plate 25, and another portion of which is located on the third side plate 27.

[0086] Optionally, the handle 30 also includes a carrying handle 31 located on the third side panel 27 and adjacent to the recess 33, facing away from the interior surface of the energy storage device 100. This allows the user to insert their hand between the carrying handle 31 and the recess 33 while using the handle 30, and to lift or move the energy storage device 100 to another location by gripping the carrying handle 31. The recess 33 allows for comfortable hand insertion, improving the comfort and grip stability of the handle 30 to some extent, and thus enhancing the portability of the energy storage device 100.

[0087] exist Figure 3 and Figure 4 In this embodiment, the outer casing 20 is provided with two handles 30, which are arranged along a first direction. A portion of the recess 33 of the left handle 30 is located on the first side plate 23, and the other portion is located on the left side of the third side plate 27; a portion of the recess 33 of the right handle 30 is located on the second side plate 25, and the other portion is located on the right side of the third side plate 27.

[0088] In one embodiment, the housing 20 is provided with a handle 30, which is located on the left side of the energy storage device 100. A portion of the recess 33 of the handle 30 is located on the first side plate 23, and another portion is located on the left side of the third side plate 27.

[0089] In one embodiment, the housing 20 is provided with a handle 30, which is located on the right side of the energy storage device 100. A portion of the recess 33 of the handle 30 is located on the second side plate 25, and another portion is located on the right side of the third side plate 27.

[0090] In some embodiments, the recess 33 is connected to the first side plate 23 and / or the second side plate 25 to form a first connection point, and the recess 33 is connected to the third side plate 27 to form a second connection point. The angle between the first connection point and the second connection point and the third side plate 27 is 30 degrees to 60 degrees.

[0091] In this way, it can meet the requirements of ergonomics and improve the airflow in the air duct 15 formed by the handle 30 and the housing 53 to a certain extent.

[0092] Specifically, please combine Figure 7 The recessed portion 33 has a first connection point A formed below it with the first side plate 23 and / or the second side plate 25, and a second connection point B formed above it with the third side plate 27. The angle between the first connecting line L1 formed by the connection of the first connecting point A and the second connecting point B and the third side plate 27 is 30 to 60 degrees, which meets ergonomic requirements and improves the comfort of the user when gripping the handle 30. At the same time, an airflow channel 15 is formed between the recessed portion 33 of the handle 30 and the housing 53. When the airflow passes through the airflow channel 15, the angle between the first connecting line L1 and the third side plate 27 can make the airflow guided on the surface of the recessed portion 33 more smooth.

[0093] exist Figure 6 and Figure 7 In this embodiment, the outer casing 20 is provided with two handles 30, which are arranged along a first direction. The lower part of the recess 33 of the left handle 30 connects to the upper part of the first side plate 23 to form a first connection point A, and the upper part of the recess 33 connects to the left side of the third side plate 27 to form a second connection point B. The first connection point A and the second connection point B connect to form a first connecting line L1, and the angle between the first connecting line L1 and the third side plate 27 is 30 degrees to 60 degrees. Similarly, the upper part of the recess 33 of the right handle 30 connects to the upper part of the second side plate 25 to form a first connection point A, and the upper part of the recess 33 connects to the right side of the third side plate 27 to form a second connection point B. The first connection point A and the second connection point B connect to form a first connecting line L1, and the angle between the first connecting line L1 and the third side plate 27 is 30 degrees to 60 degrees.

[0094] In one embodiment, the outer casing 20 is provided with a handle 30, which is located on the left side of the energy storage device 100. The lower part of the recess 33 of the handle 30 is connected to the upper part of the first side plate 23 to form a first connection point A, and the upper part of the recess 33 is connected to the left side of the third side plate 27 to form a second connection point B. The first connection point A and the second connection point B are connected to form a first connecting line L1, and the included angle between the first connecting line L1 and the third side plate 27 is 30 degrees to 60 degrees.

[0095] In one embodiment, the outer casing 20 is provided with a handle 30. The upper part of the recess 33 of the handle 30 is connected to the upper part of the second side plate 25 to form a first connection point A. The upper part of the recess 33 is connected to the right side of the third side plate 27 to form a second connection point B. The first connection point A and the second connection point B are connected to form a first connecting line L1. The included angle between the first connecting line L1 and the third side plate 27 is 30 degrees to 60 degrees.

[0096] The angle between the first connecting line and the third side plate 27 is D, where D is greater than or equal to 30 degrees and less than or equal to 60 degrees, that is, 30 degrees ≤ D ≤ 60 degrees. In some examples, D = 30 degrees, 33 degrees, 36 degrees, 39 degrees, 42 degrees, 45 degrees, 48 ​​degrees, 51 degrees, 54 degrees, 57 degrees, 60 degrees, or other values ​​greater than or equal to 30 degrees and less than or equal to 30 degrees.

[0097] The angle D between the first connecting line and the third side plate 27 can be specifically defined according to the actual situation, and this utility model does not make a specific limitation in this regard. In one example, please refer to... Figure 7 The included angle D between the first connecting line L1 and the third side plate 27 can be 45 degrees, which can meet the requirements of ergonomics and improve the airflow in the air duct 15 formed by the handle 30 and the housing 53 to a certain extent.

[0098] In some embodiments, the surface of the recess 33 facing the housing 53 is a first side 33a that forms the airflow duct 15. The housing 53 includes a first ventilation plate 531a, which has a second ventilation hole 51. The surface of the first ventilation plate 531a facing the recess 33 is a second side 531b that forms the airflow duct 15. The first ventilation plate 531a is parallel to the first connecting line.

[0099] In this way, the airflow guided by the air duct 15 between the recessed portion 33 and the first ventilation plate 531a can be more stable and smooth.

[0100] Specifically, please combine Figure 8 The inverter 50 housing 53 includes a first housing 531. The first housing 531 has first ventilation plates 531a on both sides along a first direction. The second side 531b of the first ventilation plates 531a is inclined. The first ventilation plates 531a have second ventilation holes 51. The air duct 15 communicates with the internal space of the housing 53 through the second ventilation holes 51, so as to facilitate airflow between the inside and outside of the inverter 50.

[0101] The surface of the recess 33 facing the housing 53 forms a first side 33a that surrounds the airflow duct 15, and the surface of the first ventilation plate 531a facing the recess 33 forms a second side 531b that surrounds the airflow duct 15. Airflow from the first ventilation hole 21 can be introduced into the second ventilation hole 51 along the first side 33a and the second side 531b to enter the interior of the housing 53, and / or airflow from the second ventilation hole 51 can be introduced into the second ventilation hole 51 along the first side 33a and the second side 531b to enter the external environment.

[0102] The first line L1 connecting the two connection points of the first ventilation plate 531a and the recess 33 is parallel, meaning the angle between the plane containing the first side plate 33a and the third side plate 27 is 30 to 60 degrees. This reduces the resistance encountered by the airflow during the flow process, ensuring a stable and smooth flow of air within the air guide duct 15 to a certain extent, thereby optimizing the heat dissipation efficiency of the energy storage device 100.

[0103] In some embodiments, the airflow duct 15 extends along a first direction toward the height of the energy storage device 100.

[0104] In this way, the overlapping area 10 is fully utilized for heat dissipation to a certain extent, further optimizing the heat dissipation effect of the inverter 50.

[0105] Specifically, please combine Figure 5 The first direction is left-right, and the height direction is up-down. The housing 53 and the handle 30 have an overlapping area 10 along the first direction. The overlapping area 10 has a guide air duct 15 formed between the housing 53 and the handle 30. The guide air duct 15 extends from the left-right direction of the energy storage device 100 to the up-down direction of the energy storage device 100, so that the airflow can flow along the area extending from the left-right direction to the up-down direction. This allows the inverter 50 to exchange heat with the outside through the first ventilation hole 21, the guide air duct 15 and the second ventilation hole 51, making full use of the overlapping area 10 for heat dissipation to a certain extent and further optimizing the heat dissipation effect of the inverter 50.

[0106] Therefore, the overlapping area 10 can be used for heat dissipation, which not only optimizes the space utilization and heat dissipation performance of the energy storage device 100, but also reduces the height of the energy storage device 100 to a certain extent.

[0107] In some embodiments, the handle 30 includes a recess 33, the surface of the recess 33 facing the housing 53 being a first side surface 33a that forms a guide air duct 15, and the first side surface 33a is an arc surface.

[0108] This can further improve the smoothness of airflow within the air guide duct 15.

[0109] Specifically, please combine Figure 7The surface of the recessed portion 33 facing the housing 53 forms a first side 33a that surrounds the airflow duct 15. Airflow from the first ventilation hole 21 can be introduced into the second ventilation hole 51 along the first side 33a to enter the interior of the housing 53, and / or airflow from the second ventilation hole 51 can be introduced into the second ventilation hole 51 along the first side 33a to enter the external environment.

[0110] Optionally, the first side 33a is an arc surface. The arc surface can better guide the airflow and reduce the resistance encountered by the airflow during the flow process, thereby further improving the smoothness of the airflow in the air guide duct 15 and thus improving the heat dissipation efficiency of the energy storage device 100 to a certain extent.

[0111] In some embodiments, the housing 53 includes a first ventilation plate 531a, the first ventilation plate 531a is provided with a second ventilation hole 51, and the surface of the first ventilation plate 531a facing the handle 30 is a second side 531b that forms a guide air duct 15. The second side 531b is inclined relative to the height direction of the energy storage device 100.

[0112] In this way, the components inside the housing 53 of the inverter 50 can be cooled by the airflow flowing along the second ventilation hole 51 and the second side 531b.

[0113] Specifically, please combine Figure 6 and Figure 7 The height direction is vertical. The housing 53 includes a first housing 531, and first ventilation plates 531a are provided on the left and right sides of the first housing 531. The first ventilation plate 531a is provided with a second ventilation hole 51. The surface of the first ventilation plate 531a facing the handle 30 is a second side 531b that forms a guide air duct 15. The second side 531b is inclined relative to the vertical direction. Airflow from the first ventilation hole 21 can be introduced into the second ventilation hole 51 along the second side 531b to enter the interior of the housing 53, and / or airflow from the second ventilation hole 51 can be introduced into the first ventilation hole 21 along the second side 531b to enter the external environment, thereby enabling the components inside the housing 53 of the inverter 50 to dissipate heat.

[0114] In some embodiments, the housing 53 includes a second ventilation plate 533a connected to a first ventilation plate 531a. The second ventilation plate 533a is provided with a second ventilation hole 51. The surface of the second ventilation plate 533a facing the handle 30 is a third side 533b that forms a guide air duct 15. The third side 533b extends along the height direction of the energy storage device 100.

[0115] Thus, the components inside the housing 53 of the inverter 50 can be cooled by the airflow flowing along the second ventilation hole 51 and the third side 533b.

[0116] Specifically, please combine Figure 8 The height direction is vertical. The housing 53 includes a second housing 533, which is located above and detachably connected to the first housing 531. Second ventilation plates 533a are provided on the left and right sides of the second housing 533, with the upper end of the second ventilation plate 533a connected to the lower end of the first ventilation plate 531a of the first housing 531. The second ventilation plates 533a are arranged along the height direction of the energy storage device 100, that is, extending vertically downwards from the lower end of the first ventilation plate 531a.

[0117] The second ventilation plate 533a is provided with a second ventilation hole 51. The surface of the second ventilation plate 533a facing the handle 30 is a third side 533b that forms a guide air duct 15. Airflow from the first ventilation hole 21 can be introduced into the second ventilation hole 51 along the third side 533b to enter the interior of the housing 53, and / or airflow from the second ventilation hole 51 can be introduced into the first ventilation hole 21 along the third side 533b to enter the external environment, thereby enabling the components inside the housing 53 of the inverter 50 to dissipate heat.

[0118] In some embodiments, the inverter 50 includes a first element 55 and a second element 57 located within a housing 53. The height of the first element 55 is greater than a preset height, and the height of the second element 57 is less than a preset height. The second element 57 is located inside the housing 53 corresponding to the overlapping region 10, and the first element 55 is located inside the housing 53 outside the overlapping region 10.

[0119] In this way, the space utilization rate inside the casing 53 can be improved to a certain extent, and the overall height of the energy storage device 100 can be reduced.

[0120] Specifically, please combine Figure 6 and Figure 10 The housing 53 and the handle 30 have an overlapping area 10 along the first direction. Since the recess 33 of the handle 30 occupies a certain space inside the energy storage device 100, the height of the housing 53 inside the overlapping area 10 is lower than the height of the housing 53 inside the overlapping area 10.

[0121] In this embodiment of the utility model, the preset height is the height of the second housing 533 of the inverter 50. The height of the second element 57 located inside the housing 53 corresponding to the overlapping region 10 is less than the preset height, and the height of the first element 55 located inside the housing 53 outside the overlapping region 10 is greater than the preset height.

[0122] The preset height is specifically limited based on the height of the internal position of the more than 10 pairs of top shells in the overlapping area, but this invention does not make a specific limitation in this regard.

[0123] It is understood that in other embodiments, since the height of the second element 57 is also less than the height of the inner position of the shell 53 outside the overlapping region 10, the position of the second element 57 can be located inside the shell 53 corresponding to the overlapping region 10, or it can be located inside the shell 53 outside the overlapping region 10. The position of the second element 57 can be specifically limited according to the actual situation, and this utility model does not make a specific limitation in this regard.

[0124] Therefore, by flexibly configuring the positions of the first element 55 and the second element 57 within the housing 53 at a preset height, effective layout and heat dissipation management of the internal components of the inverter 50 can be achieved, which can improve the space utilization outside the housing 53 to a certain extent and reduce the overall height of the energy storage device 100.

[0125] In some embodiments, the first element 55 includes at least one of a first cooling fan 551 and a heat sink 553, and the second element 57 includes at least one of an inductor 571, a safety capacitor 573, and a transformer 575.

[0126] In this way, the positions of the components inside the housing 53 of the inverter 50 can be flexibly configured to reduce the overall height of the unit.

[0127] Specifically, please combine Figure 9 and Figure 10 The inverter 50 includes a first element 55 and a second element 57, which are located inside a housing 53 and mounted on a circuit board 58 of the inverter 50. The first element 55 is located inside the housing 53 outside the overlapping region 10. The first element 55 includes at least one of a first cooling fan 551 and a heat sink 553. The first cooling fan 551 accelerates airflow within the inverter 50 housing 53 to improve heat dissipation rate. The heat sink 553 has multiple heat dissipation fins on its surface to increase heat dissipation area and improve heat dissipation efficiency. The second element 57 includes at least one of an inductor 571, a safety capacitor 573, and a transformer 575. The inductor 571 stores electrical energy and releases it when the current changes; the safety capacitor 573 filters to suppress electromagnetic interference (EMI) and eliminate noise; and the transformer 575 changes the AC voltage through electromagnetic induction.

[0128] exist Figure 9 and Figure 10 In one embodiment, the first element 55 includes a first cooling fan 551 and a heat sink 553. The first cooling fan 551 is located near the second ventilation hole 51 on the right side of the housing 53. The second element 57 includes an inductor 571, a safety capacitor 573, a part of the overlapping area 10 of the transformer 575 corresponding to the internal position of the housing 53, and another part of the internal position of the housing 53 located outside the overlapping area 10.

[0129] In one embodiment, the first element 55 includes a first cooling fan 551, and the second element 57 includes one of an inductor 571, a safety capacitor 573, and a transformer 575. In another embodiment, the first element 55 includes a first cooling fan 551, and the second element 57 includes two of an inductor 571, a safety capacitor 573, and a transformer 575. In yet another embodiment, the first element 55 includes a first cooling fan 551, and the second element 57 includes an inductor 571, a safety capacitor 573, and a transformer 575.

[0130] In one embodiment, the first element 55 includes a heat sink 553, and the second element 57 includes one of an inductor 571, a safety capacitor 573, and a transformer 575. In another embodiment, the first element 55 includes a heat sink 553, and the second element 57 includes two of an inductor 571, a safety capacitor 573, and a transformer 575. In yet another embodiment, the first element 55 includes a heat sink 553, and the second element 57 includes an inductor 571, a safety capacitor 573, and a transformer 575.

[0131] In one embodiment, the first element 55 includes a first cooling fan 551 and a heat sink 553, and the second element 57 includes one of an inductor 571, a safety capacitor 573, and a transformer 575. In another embodiment, the first element 55 includes a first cooling fan 551 and a heat sink 553, and the second element 57 includes two of an inductor 571, a safety capacitor 573, and a transformer 575. In yet another embodiment, the first element 55 includes a first cooling fan 551 and a heat sink 553, and the second element 57 includes an inductor 571, a safety capacitor 573, and a transformer 575.

[0132] It is understood that the second component 57 also includes, but is not limited to, varistors, low-voltage filter capacitors, connectors, etc.

[0133] Optionally, the heat-generating components within the inverter 50 may employ high-efficiency thermal silicone and metal heat sinks to improve heat transfer efficiency, thereby further enhancing heat dissipation.

[0134] Please combine Figure 8 The inverter also includes an insulating sheet 59, which is located above the first element 55 and the second element 57 and below the first housing 531, and is used to separate the first element 55 and the second element 57 from the first housing 531 to prevent the first element 55 and the second element 57 from short-circuiting.

[0135] In some embodiments, the energy storage device 100 includes a second cooling fan 70 located between the outer casing 20 and the housing 53, and the cooling fan and the first ventilation hole 21 are arranged along a first direction.

[0136] In this way, the airflow at the first ventilation hole 21 can be accelerated to a certain extent, and the heat dissipation rate of the inverter 50 can be improved to a certain extent while taking into account the heat dissipation requirements of the battery management system 60 and the battery module 40.

[0137] Specifically, please combine Figure 2 The first direction is left-right. The battery module 40 includes a battery rack 41 and multiple battery cells 43. The battery rack 41 houses the multiple battery cells 43. The energy storage device 100 also includes a battery management system 60, located between the inverter 50 housing 20 and the battery rack 41. A plastic mounting piece 411 is provided near the first ventilation hole 21 on the battery rack 41 for mounting a second cooling fan 70, thus fixing the second cooling fan 70 to the battery rack 41. The second cooling fan 70 can accelerate airflow at the first ventilation hole 21, thereby improving the heat dissipation rate of the inverter 50 to a certain extent. Please refer to... Figure 5 The second cooling fan 70 is located near the first ventilation hole 21 of the first side plate 23 and is arranged along the first direction with the first ventilation hole 21.

[0138] It is understood that the second cooling fan 70 and the first cooling fan 551 have the same airflow direction, with the first cooling fan 551 located near the second ventilation hole 51 on the right side of the housing 53. In one embodiment, the airflow direction of the second cooling fan 70 and the first cooling fan 551 is from left to right. That is, cold air from the outside environment can enter the housing 20 through the first ventilation hole 21 of the first side plate 23. Then, the second cooling fan 70 accelerates the airflow, causing the cold air to be guided by the airflow duct 15 to the second ventilation hole 51 on the left side of the housing 53, and then enter the housing 53 through the second ventilation hole 51 to exchange heat with the components inside the inverter 50 to cool the components. Subsequently, the hot air formed by the heat exchange is accelerated by the first cooling fan 551 and flows to the second ventilation hole 51 on the right side of the housing 53. Then, it is guided by the airflow duct 15 to the first ventilation hole 21 of the second side plate 25 to enter the outside environment, thereby bringing the heat generated by the operation of the components into the outside environment for heat dissipation.

[0139] In one embodiment, the airflow direction of the second cooling fan 70 and the first cooling fan 551 is from right to left. That is, cold air from the outside environment can enter the interior of the housing 20 through the first ventilation hole 21 of the second side plate 25, and then be guided by the airflow duct 15 to the second ventilation hole 51 on the right side of the housing 53. The air then enters the interior of the housing 53 through the second ventilation hole 51, is accelerated by the first cooling fan 551, and exchanges heat with the components inside the inverter 50 to cool the components. The hot air formed by the heat exchange then flows to the second ventilation hole 51 on the left side of the housing 53, and is then guided by the airflow duct 15 to the first ventilation hole 21 of the first side plate 23. The second cooling fan 70 accelerates the airflow into the outside environment, thereby bringing the heat generated by the operation of the components into the outside environment for heat dissipation.

[0140] Meanwhile, the second cooling fan 70 is also close to the battery management system 60 and the battery module 40, so it can also meet the heat dissipation needs of the battery management system 60 and the battery module 40. This allows the external environment to exchange heat with the battery management system 60 and the battery module 40 through the first ventilation hole 21 and the action of the second cooling fan 70, thereby enhancing the heat dissipation efficiency of the energy storage device 100 to a certain extent.

[0141] It is understood that the number of the first cooling fan 551 and the second cooling fan 70, as well as the air intake and exhaust volume, can be specifically limited according to the actual situation to ensure that the noise and power consumption of the first cooling fan 551 and the second cooling fan 70 are kept within a reasonable range to a certain extent. This utility model does not make specific limitations in this regard.

[0142] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0143] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An energy storage device, characterized in that, include: The housing is provided with a first ventilation hole and a handle; A battery module, wherein the battery module is disposed within the housing; An inverter is disposed within the housing and electrically connected to the battery module. The inverter includes a housing with a second ventilation hole. The housing and the handle have an overlapping area along a first direction. The overlapping area has a guide air duct formed between the housing and the handle. The guide air duct is adapted to direct airflow from the first ventilation hole to the second ventilation hole and / or direct airflow from the second ventilation hole to the first ventilation hole. The first direction is perpendicular to the height direction of the energy storage device.

2. The energy storage device according to claim 1, characterized in that, The outer casing includes a first side plate and a second side plate, which are arranged along the first direction, and both the first side plate and the second side plate are provided with the first ventilation hole.

3. The energy storage device according to claim 2, characterized in that, At least a portion of the handle is located on the first side plate and / or the second side plate.

4. The energy storage device according to claim 3, characterized in that, The housing includes a third side panel connected to the first side panel and the second side panel. The handle includes a recess, a portion of which is located on the first side panel and / or the second side panel, and another portion of which is located on the third side panel.

5. The energy storage device according to claim 4, characterized in that, The recessed portion is connected to the first side plate and / or the second side plate to form a first connection point, and the recessed portion is connected to the third side plate to form a second connection point. The angle between the first connection point and the second connection point and the third side plate is 30 degrees to 60 degrees.

6. The energy storage device according to claim 5, characterized in that, The surface of the recess facing the housing forms the first side of the airflow guide duct. The housing includes a first ventilation plate, which has a second ventilation hole. The surface of the first ventilation plate facing the recess is a second side that forms the airflow duct. The first ventilation plate is parallel to the first connecting line.

7. The energy storage device according to claim 1, characterized in that, The airflow duct extends along the first direction toward the height of the energy storage device.

8. The energy storage device according to claim 7, characterized in that, The handle includes a recessed portion, and the surface of the recessed portion facing the housing forms a first side surface that surrounds the airflow duct. The first side surface is an arc surface.

9. The energy storage device according to claim 7 or 8, characterized in that, The housing includes a first ventilation plate, the first ventilation plate is provided with a second ventilation hole, the surface of the first ventilation plate facing the handle is a second side that forms the airflow duct, and the second side is inclined relative to the height direction of the energy storage device.

10. The energy storage device according to claim 9, characterized in that, The housing includes a second ventilation plate connected to the first ventilation plate. The second ventilation plate has a second ventilation hole. The surface of the second ventilation plate facing the handle is a third side that forms the airflow duct. The third side extends along the height direction of the energy storage device.

11. The energy storage device according to claim 1, characterized in that, The inverter includes a first element and a second element located within the housing. The height of the first element is greater than a preset height, and the height of the second element is less than the preset height. The second element is located inside the housing corresponding to the overlapping area, and the first element is located inside the housing outside the overlapping area.

12. The energy storage device according to claim 11, characterized in that, The first element includes at least one of a first cooling fan and a heat sink, and the second element includes one of an inductor, a safety capacitor, and a transformer.

13. The energy storage device according to claim 1, characterized in that, The energy storage device includes a second cooling fan located between the outer casing and the housing, and the second cooling fan and the first ventilation hole are arranged along the first direction.

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