Electrical module and energy storage device

Abstract

The application provides an electrical module and an energy storage device. The electrical module comprises a housing, a partition, a first air inlet channel, a plurality of electrical components, a first fan and a second fan. The housing comprises a front wall and a rear wall arranged at intervals along a first direction. The partition is arranged in the housing and connected to the housing. The partition comprises a main body portion and an inclined portion. The main body portion is provided with a first ventilation opening. An included angle between the main body portion and the inclined portion is an obtuse angle. The obtuse angle is located on an air outlet side of the first ventilation opening. The first air inlet channel is located between the partition and the rear wall and communicates with the first ventilation opening. The plurality of electrical components are arranged in the housing. At least part of the electrical components are arranged on the air outlet side of the first ventilation opening. The first fan is arranged in the housing. The first fan is configured to drive air to pass through the first ventilation opening and the first air inlet channel. The second fan is arranged outside the housing. The second fan is configured to dissipate heat from the housing.

Description

Technical Field

[0001] This application relates to the field of energy storage, and in particular to an electrical module and an energy storage device. Background Technology

[0002] Against the backdrop of increased global support for the development of new energy technologies, various energy storage-related technologies have been widely applied. The batteries and electrical components of energy storage devices are highly sensitive to temperature; therefore, heat dissipation has always been a research focus in the industry. Summary of the Invention

[0003] In view of the above problems, this application provides an electrical module and an energy storage device that can improve the heat dissipation efficiency of the housing.

[0004] This application provides an electrical module including a housing, an isolator, a first air inlet channel, multiple electrical components, a first fan, and a second fan. The housing includes a front wall and a rear wall spaced apart along a first direction. The isolator is disposed within and connected to the housing, and includes a main body and an inclined portion. The main body has a first vent, and the included angle between the main body and the inclined portion is an obtuse angle located on the air outlet side of the first vent. The first air inlet channel is located between the isolator and the rear wall and communicates with the first vent. Multiple electrical components are located within the housing, with at least some of the electrical components located on the air outlet side of the first vent. The first fan is disposed within the housing and configured to drive air through the first vent and the first air inlet channel. The second fan is disposed outside the housing and configured to dissipate heat from the housing.

[0005] In the electrical module of this application embodiment, an isolator is provided inside the housing. Under the disturbance of the first fan, the heat inside the housing is dispersed, reducing the possibility of heat accumulation around any one or more electrical components, which could lead to excessively high temperatures in those components. This allows temperature-sensitive electrical components to operate stably and normally, improving the operational stability and reliability of the electrical module. When the first fan disturbs the airflow within the housing, the inclined portion of the isolator guides the airflow towards the front wall, then through the electrical components and back to the first air inlet channel. This facilitates the airflow's disturbance of heat around the electrical components, dispersing the heat within the housing and allowing for greater heat dissipation to the outside through a larger area of ​​the housing, thus improving the housing's heat dissipation efficiency.

[0006] In one or more of the above optional embodiments, the housing includes a left wall and a right wall spaced apart along a second direction, the first direction being perpendicular to the second direction, a gap for airflow being provided between the inclined portion and the left wall, the main body being connected to the right wall, and the inclined portion and the rear wall being separated, with an obtuse angle of 130° to 170°.

[0007] The inclined section can guide the airflow toward the front wall, and then the airflow flows through the electrical components before returning to the first air inlet channel, reducing the possibility that the airflow will directly enter the first air inlet channel without passing through the electrical components.

[0008] The obtuse angle D is between 130° and 170°, which helps to improve the obstruction effect of the inclined part on the airflow, reduces the possibility that the airflow will flow back directly to the first air inlet channel after being discharged from the first vent outlet side, and enables the inclined part to effectively guide the airflow toward the front wall.

[0009] In one or more of the above alternative embodiments, the inclined portion and the left wall are provided separately.

[0010] In one or more of the above optional embodiments, the first air inlet channel includes a first sub-channel and a second sub-channel. The main body and the rear wall form the first sub-channel, which gradually decreases in size along the air inlet direction of the first air inlet channel. The inclined part and the rear wall form the second sub-channel, which gradually decreases in size along the air inlet direction of the first air inlet channel.

[0011] Along the air intake direction of the first air intake channel, when the airflow flows in the first sub-channel, the airflow velocity increases, which is conducive to the rapid flow of air in the first sub-channel and makes it easier for the airflow outside the first sub-channel to enter the first sub-channel and then be discharged through the first vent.

[0012] In one or more of the above optional embodiments, the length of the projection of the spacer along the first direction along the second direction is K1, and the length of the rear wall in the second direction is K2, wherein 1 / 2≤K1 / K2≤2 / 3.

[0013] The relatively large size of the isolation component allows airflow to return to the first air inlet channel after passing through the electrical components, which helps improve the airflow circulation effect. Furthermore, heat can be dispersed throughout the entire space inside the housing, improving the heat dissipation effect and efficiency of the housing.

[0014] In one or more of the above optional embodiments, the housing includes a left wall and a right wall spaced apart along a second direction, the first direction being perpendicular to the second direction, an inclined portion connected to the left wall, a main body portion connected to the right wall, an obtuse angle greater than 180° and less than 270°, a second vent provided on the inclined portion, the second vent communicating with a first air inlet channel, and a first fan configured to drive air through the first vent, the second vent, and the first air inlet channel.

[0015] The inclined section can guide airflow through the second vent into the first air intake channel, reducing the possibility of airflow flowing back to the air outlet side of the first vent and circulating, thus affecting the turbulence effect. This helps to improve the airflow circulation effect, and the heat can be dispersed throughout the entire space inside the shell, improving the heat dissipation effect and efficiency of the shell.

[0016] In one or more of the above optional embodiments, the first air inlet channel includes a first sub-channel and a second sub-channel. The main body and the rear wall form the first sub-channel, which gradually decreases in size along the air inlet direction of the first air inlet channel. The inclined part and the rear wall form the second sub-channel, which gradually increases in size along the air inlet direction of the first air inlet channel.

[0017] Along the air intake direction of the first air intake channel, when the airflow flows in the first sub-channel, the airflow velocity increases, which is conducive to the rapid flow of air in the first sub-channel and makes it relatively easy for the airflow outside the first sub-channel to enter the first sub-channel and then be discharged through the first vent.

[0018] After passing through the electrical components, the airflow can disperse heat into the second sub-channel. The airflow velocity in the second sub-channel is relatively slow, allowing more heat to be dissipated to the outside through the casing, which helps to improve the heat dissipation effect and efficiency.

[0019] In one or more of the above optional embodiments, the first fan is disposed on the main body, the first fan is located on the air inlet side of the first vent, and faces the first vent.

[0020] The first fan is located within the first air intake channel. The first fan can reuse the first air intake channel, reducing the space occupied by the first fan within the housing for installing electrical components, improving the space utilization within the housing, and reducing the difficulty of arranging the first fan and electrical components.

[0021] In one or more of the above optional embodiments, the housing includes a left wall and a right wall spaced apart along a second direction, and a top wall and a bottom wall spaced apart along a third direction. The left wall, right wall, top wall, bottom wall, front wall, and rear wall are interconnected and form a closed receiving space.

[0022] The housing can be waterproof so that it can protect the electrical components inside.

[0023] In one or more of the above optional embodiments, both the top wall and the bottom wall are connected to the isolator, which helps to block airflow from flowing between the isolator and the top wall and between the isolator and the bottom wall, thereby reducing the possibility of noise generated by airflow flowing between the isolator and the top wall and between the isolator and the bottom wall.

[0024] In one or more of the above optional embodiments, the electrical module includes a flow guide disposed outside the housing and connected to the housing, forming a second air intake channel between the flow guide and the housing. The flow guide includes a third vent communicating with the second air intake channel, and a second fan is configured to drive air through the second air intake channel and the third vent.

[0025] In one or more of the above optional embodiments, the housing includes a top wall and a bottom wall spaced apart along a third direction, with the first direction perpendicular to the third direction. The second air inlet channel includes a third sub-channel and a fourth sub-channel, with a guide member connected to the bottom wall to form the third sub-channel and a guide member connected to the rear wall to form the fourth sub-channel, and a second fan located on the rear side of the rear wall. The third vent is an air outlet and is located on the rear side of the rear wall.

[0026] The air intake direction of the second air intake channel is towards the rear wall, while the airflow on the exhaust side of the first vent is towards the front wall. The airflow near the front wall in the second air intake channel is cold air, while the airflow near the front wall in the first vent is hot air. This helps to reduce the temperature of the airflow inside the housing and improve the heat dissipation of electrical components.

[0027] In one or more of the above optional embodiments, the housing includes a top wall and a bottom wall disposed opposite each other along a third direction, the first direction being perpendicular to the third direction. Along the third direction, the second fan does not extend beyond the bottom wall, and along the direction opposite to the third direction, the second fan does not extend beyond the top wall, reducing the space occupied by the second fan along the third direction, which is beneficial for miniaturizing the electrical module in the third direction.

[0028] In one or more of the above optional embodiments, the air guide includes a connected cylinder and an end plate. The end plate is disposed at one end of the cylinder, the housing is located inside the cylinder, the second air inlet channel includes a third sub-channel and a fourth sub-channel, the annular space formed between the housing and the cylinder serves as the third sub-channel, the rear wall and the end plate form a fourth sub-channel, the second fan is located in the fourth sub-channel, and the end plate is provided with a third ventilation opening.

[0029] In one or more of the above optional embodiments, the electrical module includes heat exchange fins disposed within the second air inlet channel.

[0030] Heat exchange fins can increase the heat transfer area, enhance the heat transfer process, and improve the heat exchange efficiency between the airflow in the shell and the second air inlet channel. This application provides an energy storage device including a cabinet and an electrical module. The cabinet includes a front door panel and a rear door panel spaced apart along a first direction. The front door panel includes a first heat dissipation hole, and the rear door panel includes a second heat dissipation hole. The electrical module is disposed within the cabinet. Attached Figure Description

[0031] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0032] Figure 1 This is a schematic diagram of the structure of an electrical module provided in one embodiment of this application;

[0033] Figure 2 This is a partial structural schematic diagram of an electrical module provided in an embodiment of this application;

[0034] Figure 3 This is a partial structural schematic diagram of an electrical module provided in an embodiment of this application;

[0035] Figure 4 This is a partially simplified structural diagram of an electrical module provided in one embodiment of this application;

[0036] Figure 5 This is a simplified schematic diagram of a partial structure of an electrical module provided in an embodiment of this application;

[0037] Figure 6 This is a partial structural schematic diagram of an isolation member provided in an embodiment of this application;

[0038] Figure 7 This is a partially exploded structural diagram of an electrical module provided in an embodiment of this application;

[0039] Figure 8 This is a partial cross-sectional view of an electrical module provided in an embodiment of this application;

[0040] Figure 9 This is a simplified schematic diagram of a partial cross-sectional structure of an electrical module provided in an embodiment of this application;

[0041] Figure 10 This is a simplified cross-sectional view of a flow guide provided in an embodiment of this application;

[0042] Figure 11 This is a schematic diagram of the structure of an electrical module provided in one embodiment of this application, viewed along a first direction;

[0043] Figure 12 This is a schematic diagram of the structure of an energy storage device provided in one embodiment of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 10. Energy storage equipment;

[0046] 20. Server rack; 21. Front door panel; 211. First ventilation hole; 22. Rear door panel;

[0047] 30. Battery device;

[0048] 40. Inverter;

[0049] 50. Electrical module; 501. First air intake channel; 5011. First sub-channel; 5012. Second sub-channel; 502. Second air intake channel; 5021. Third sub-channel; 5022. Fourth sub-channel; 503. Clearance;

[0050] 60. Shell; 61. Front wall; 62. Rear wall; 63. Left wall; 64. Right wall; 65. Top wall; 66. Bottom wall;

[0051] 70. Isolation component; 71. Main body; 711. First ventilation opening; 72. Inclined part; 721. Second ventilation opening;

[0052] 80. Electrical components; 81. Auxiliary power supply; 811. DC auxiliary power supply; 812. AC auxiliary power supply; 82. DC control module; 821. Fuse; 83. AC control module; 831. Copper busbar;

[0053] 90. First fan;

[0054] 100. Second fan;

[0055] 110. Flow guide; 1101. Third ventilation opening; 1102. Base; 1103. Side; 111. Cylinder; 112. End plate;

[0056] 120. Replace the heat exchange fins;

[0057] S1, the air intake direction of the first air intake channel;

[0058] S2, the air intake direction of the second air intake duct;

[0059] X, first direction;

[0060] Y, second direction;

[0061] Z, Third-party orientation. Detailed Implementation

[0062] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0063] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by those skilled in the art to which the embodiments of this application pertain.

[0064] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and 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. Therefore, they should not be construed as limitations on the embodiments of this application.

[0065] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0066] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; 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 the embodiments of this application can be understood according to the specific circumstances.

[0067] See Figure 1 , Figure 2 and Figure 3 As shown, this application embodiment provides an electrical module 50, which includes a housing 60 and a plurality of electrical components 80, the plurality of electrical components 80 being located within the housing 60. The housing 60 includes a front wall 61 and a rear wall 62 spaced apart along a first direction X.

[0068] See Figure 12 As shown, this application embodiment provides an energy storage device 10, which includes a cabinet 20 and an electrical module 50. The cabinet 20 includes a front door panel 21 and a rear door panel 22 spaced apart along a first direction X. The front door panel 21 includes a first heat dissipation hole 211. The rear door panel 22 includes a second heat dissipation hole (not shown in the figure). The electrical module 50 is disposed inside the cabinet 20.

[0069] In some feasible ways, along the first direction X, the electrical module 50 is located between the first heat dissipation hole 211 and the second heat dissipation hole, which is beneficial for the heat dissipation of the electrical module 50.

[0070] In some implementations, the energy storage device 10 includes a battery unit 30 and an inverter 40. The battery unit 30 and the inverter 40 are respectively connected to an electrical module 50. The battery unit 30 is used to store electrical energy. The inverter 40 functions to convert between direct current and alternating current.

[0071] In some examples, the battery unit 30, electrical module 50, and inverter 40 are arranged along the third direction Z.

[0072] In some possible implementations, the electrical module 50 includes an isolator 70 disposed within and connected to the housing 60. The isolator 70 includes a main body 71 and an inclined portion 72. The main body 71 has a first vent 711. See also... Figure 2 As shown, the angle between the main body 71 and the inclined part 72 is an obtuse angle D. The obtuse angle D is located on the air outlet side of the first vent 711.

[0073] In some feasible implementations, at least a portion of the electrical components 80 are positioned on the exhaust side of the first vent 711. The electrical components 80 generate heat during operation. The air exhausted from the first vent 711 can flow through the electrical components 80 and dissipate heat, reducing heat buildup around the electrical components 80.

[0074] In some feasible implementations, the electrical component 80 is located outside the first air intake channel 501. The electrical component 80 is not installed inside the first air intake channel 501.

[0075] In some possible implementations, the electrical module 50 includes a first fan 90 disposed within the housing 60. The first fan 90 is configured to drive airflow through a first vent 711 and a first air intake channel 501, and to dissipate heat from the electrical components 80. Figure 2 , Figure 3 and Figure 4 The dashed line in the middle is a simplified schematic diagram of the airflow direction. The airflow is unidirectional within the first air inlet channel 501.

[0076] In some possible implementations, the electrical module 50 includes a first air intake channel 501 located between the isolator 70 and the rear wall 62. The first air intake channel 501 communicates with a first vent 711. The inclined portion 72 can restrict airflow back to the first air intake channel 501, guiding airflow toward the front wall 61, allowing more air to flow toward the electrical components 80 and improving heat dissipation for the electrical components 80.

[0077] Different electrical components 80 generate different amounts of heat. The first fan 90 acts as a turbulence unit within the housing 60, dispersing heat around each electrical component 80 and reducing the likelihood of heat accumulation around any one or several components 80, which could lead to overheating. This ensures that temperature-sensitive components 80 can operate stably and normally. The heat generated by the electrical components 80 can be dissipated to the outside through the housing 60.

[0078] In some implementations, the electrical module 50 includes a second fan 100 disposed outside the housing 60. The second fan 100 is configured to dissipate heat from the housing 60. The second fan 100 can increase the airflow velocity outside the housing 60 to improve the efficiency of heat dissipation through the housing 60. Heat inside the housing 60 is dissipated through the housing 60, and the first fan 90 and the second fan 100 work together to dissipate heat from the electrical components 80.

[0079] In some feasible ways, electrical module 50 can be a high-voltage box.

[0080] In the electrical module 50 of this application embodiment, an isolator 70 is provided inside the housing 60. Under the disturbance of the first fan 90, the heat inside the housing 60 is dispersed, reducing the possibility of heat accumulating around any one or more electrical components 80 and causing the temperature of the electrical component 80 to be too high. This allows the temperature-sensitive electrical components 80 to operate stably and normally, improving the working stability and reliability of the electrical module 50. When the first fan 90 disturbs the airflow inside the housing 60, the inclined portion 72 of the isolator 70 can guide the airflow toward the front wall 61, then through the electrical components 80 and back to the first air inlet channel 501. This facilitates the airflow to disturb the heat around the electrical components 80, dispersing the heat within the housing 60 and allowing more areas of the housing 60 to dissipate heat to the outside, thus improving the heat dissipation efficiency of the housing 60.

[0081] See also some of the possible implementation methods. Figures 2 to 4 As shown, the housing 60 includes a left wall 63 and a right wall 64 spaced apart along a second direction Y. The first direction X is perpendicular to the second direction Y. A gap 503 for airflow is provided between the inclined portion 72 and the left wall 63. The main body 71 and the right wall 64 are connected. The inclined portion 72 and the rear wall 62 are separated. The inclined portion 72 and the rear wall 62 are separated, meaning that the inclined portion 72 and the rear wall 62 are not connected and a space for airflow is formed between them.

[0082] In some possible implementations, the inclined portion 72 and the left wall 63 are separated. Separation of the inclined portion 72 and the left wall 63 means that the inclined portion 72 and the left wall 63 are not connected and a gap 503 is formed.

[0083] Driven by the first fan 90, the airflow inside the housing 60 can flow towards the front wall 61 from the outlet side of the first vent 711, then change direction to flow towards the left wall 63, and then change direction again to flow towards the rear wall 62. After passing through the electrical components 80, the airflow enters the first air inlet channel 501 and is then blown out from the outlet side of the first vent 711.

[0084] The inclined portion 72 is connected to the end of the main body 71 away from the right wall 64. Relative to the main body 71, the inclined portion 72 is inclined in a direction away from the rear wall 62. The inclined portion 72 can guide airflow towards the front wall 61, and then the airflow flows through the electrical component 80 before returning to the first air inlet channel 501, reducing the possibility of airflow directly entering the first air inlet channel 501 without passing through the electrical component 80.

[0085] In some feasible ways, the obtuse angle D is 130° to 170°, which helps to improve the obstruction effect of the inclined part 72 on the airflow, reduces the possibility that the airflow will flow back directly to the first air inlet channel 501 after being discharged from the air outlet side of the first vent 711, and enables the inclined part 72 to effectively guide the airflow toward the front wall 61.

[0086] In some examples, the obtuse angle D is one of 130°, 140°, 150°, 160°, or 170°.

[0087] In some examples, the connection between the main body 71 and the right wall 64 is not limited to adhesive connection, welding connection or abutment connection, which helps to block airflow from flowing between the main body 71 and the right wall 64, reducing the possibility of noise and reduced heat dissipation caused by airflow flowing between the main body 71 and the right wall 64.

[0088] See in some examples Figure 2 or Figure 4 As shown, the first air inlet channel 501 includes a first sub-channel 5011 and a second sub-channel 5012 that are connected to each other. The main body 71 and the rear wall 62 form the first sub-channel 5011. Along the air inlet direction S1 of the first air inlet channel 501, the first sub-channel 5011 gradually decreases in size.

[0089] Along the air intake direction S1 of the first air intake channel 501, when the airflow flows in the first sub-channel 5011, the airflow velocity increases, which is conducive to the rapid flow of air in the first sub-channel 5011, and makes it easier for the airflow outside the first sub-channel 5011 to enter the first sub-channel 5011 and then be discharged through the first vent 711.

[0090] For example, the main body 71 is a flat portion. The main body 71 is inclined relative to the rear wall 62. The larger end of the first sub-channel 5011 is away from the right wall 64, and the smaller end is close to the right wall 64.

[0091] In some examples, the inclined portion 72 and the rear wall 62 form a second sub-channel 5012. Along the airflow direction S1 of the first air inlet channel 501, the second sub-channel 5012 gradually narrows. After passing through the second sub-channel 5012, the airflow directly enters the first sub-channel 5011.

[0092] Along the air intake direction S1 of the first air intake channel 501, when the airflow flows within the second sub-channel 5012, the airflow velocity increases, which facilitates rapid airflow within the second sub-channel 5012 and makes it relatively easy for airflow outside the second sub-channel 5012 to enter it. The second sub-channel 5012 can provide a first-stage acceleration effect on the airflow, while the first sub-channel 5011 can provide a second-stage acceleration effect. After passing through the various electrical components 80, the airflow smoothly returns to the second sub-channel 5012 and the first sub-channel 5011, which helps improve the airflow circulation effect and allows heat to be distributed throughout the entire space within the housing 60, improving the heat dissipation effect and efficiency of the housing 60.

[0093] For example, the larger end of the second sub-channel 5012 is away from the right wall 64, and the smaller end is close to the right wall 64.

[0094] For example, both the main body 71 and the inclined plate are plate-shaped structures.

[0095] See in some examples Figure 4 As shown, the projection of the isolator 70 along the first direction X has a length of K1 along the second direction Y, and the length of the rear wall 62 along the second direction Y is K2, where 1 / 2 ≤ K1 / K2 ≤ 2 / 3. The relatively large size of the isolator 70 facilitates the return of airflow to the first air inlet channel 501 after passing through the electrical components 80, which improves the airflow circulation effect. Furthermore, heat can be dispersed throughout the entire space inside the housing 60, improving the heat dissipation effect and efficiency of the housing 60.

[0096] For example, the length of the projection of the main body 71 along the first direction X along the second direction Y is greater than the length of the projection of the inclined portion 72 along the first direction X along the second direction Y.

[0097] See also some of the possible implementation methods. Figure 5 and Figure 6 As shown, see Figure 5 and Figure 6This is another embodiment of the present application. The housing 60 includes a left wall 63 and a right wall 64 spaced apart along a second direction Y. The first direction X is perpendicular to the second direction Y. An inclined portion 72 is connected to the left wall 63, and a main body portion 71 is connected to the right wall 64. The obtuse angle D is greater than 180° and less than 270°. A second vent 721 is provided on the inclined portion 72. The second vent 721 communicates with the first air inlet channel 501. A first fan 90 is configured to drive airflow through the first vent 711, the second vent 721, and the first air inlet channel 501. Figure 5 A simplified diagram showing the direction of airflow, indicated by dashed lines.

[0098] The connection between the main body 71 and the inclined part 72 protrudes toward the front wall 61. The main body 71 can guide airflow toward the front wall 61 and through the electrical components 80.

[0099] The inclined portion 72 can guide airflow through the second vent 721 into the first air inlet channel 501, reducing the possibility of airflow flowing back to the air outlet side of the first vent 711 and circulating, thus affecting the turbulence effect. This is beneficial to improving the airflow circulation effect, and the heat can be dispersed to the entire space inside the housing 60, improving the heat dissipation effect and efficiency of the housing 60.

[0100] See in some examples Figure 5 As shown, the first air inlet channel 501 includes a first sub-channel 5011 and a second sub-channel 5012. The main body 71 and the rear wall 62 form the first sub-channel 5011. Along the air inlet direction S1 of the first air inlet channel 501, the first sub-channel 5011 gradually decreases in size. Along the air inlet direction S1 of the first air inlet channel 501, when the airflow flows in the first sub-channel 5011, the airflow velocity increases, which is conducive to the rapid flow of air in the first sub-channel 5011, and makes it relatively easy for the airflow outside the first sub-channel 5011 to enter the first sub-channel 5011 and then be discharged through the first vent 711.

[0101] An inclined portion 72 is connected to the left wall 63, and the inclined portion 72 and the rear wall 62 form a second sub-channel 5012. Along the airflow direction S1 of the first air inlet channel 501, the second sub-channel 5012 gradually widens. After passing through the second sub-channel 5012, the airflow directly enters the first sub-channel 5011. Along the airflow direction S1 of the first air inlet channel 501, the airflow velocity decreases as the airflow flows within the second sub-channel 5012. After passing through the electrical component 80, the airflow can disperse heat into the second sub-channel 5012. The relatively slow airflow velocity within the second sub-channel 5012 allows more heat to be dissipated to the outside through the housing 60, which is beneficial for improving heat dissipation effect and efficiency.

[0102] In some examples, the connection between the main body 71 and the right wall 64 includes, but is not limited to, adhesive connection, welding connection or abutment connection, which helps to block airflow from flowing between the main body 71 and the right wall 64 and reduce the possibility of noise caused by airflow flowing between the main body 71 and the right wall 64.

[0103] In some examples, the connection between the inclined portion 72 and the left wall 63 includes, but is not limited to, adhesive connection, welding connection or abutment connection, which helps to block airflow from flowing between the inclined portion 72 and the left wall 63 and reduce the possibility of noise and reduced heat dissipation effect caused by airflow flowing between the inclined portion 72 and the left wall 63.

[0104] See also some of the possible implementation methods. Figure 2 and Figure 4 As shown, a first fan 90 is disposed on the main body 71. The first fan 90 is disposed corresponding to the first vent 711, and the first fan 90 faces the first vent 711. The first fan 90 is located on the air intake side of the first vent 711.

[0105] In some feasible implementations, the first fan 90 is located within the first air intake channel 501. The first fan 90 can reuse the first air intake channel 501, reducing the space occupied by the first fan 90 within the housing 60 for installing electrical components 80, improving the space utilization within the housing 60, and reducing the difficulty of arranging the first fan 90 and electrical components 80.

[0106] In some examples, the first fan 90 is detachably connected to the main body 71. For example, the first fan 90 can be connected to the main body 71 by fasteners such as screws, or the first fan 90 can be snapped onto the main body 71.

[0107] In some examples, the main body 71 is provided with two first vents 711 and two first fans 90. The two first fans 90 can enhance the airflow driving force and improve the airflow circulation efficiency. The two first fans 90 are redundantly configured; if one first fan 90 fails and cannot be used, the other first fan 90 can still work normally to achieve turbulence, reducing the possibility of disassembling and repairing the electrical module 50. For example, the two first fans 90 are arranged adjacent to each other along the third direction Z. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0108] See in some examples Figure 2 and Figure 3As shown, the housing 60 includes a left wall 63 and a right wall 64 spaced apart along a second direction Y. The first direction X is perpendicular to the second direction Y. The electrical component 80 includes a DC control module 82. The DC control module 82 includes a fuse 821. Along the second direction Y, the distance between the fuse 821 and the left wall 63 is less than the distance between the fuse 821 and the right wall 64. The fuse 821 is positioned closer to the left wall 63 than the right wall 64.

[0109] In some examples, energy storage device 10 includes battery unit 30 (see...) Figure 12 (As shown). The battery unit 30 is housed within the cabinet 20. The battery unit 30 includes multiple battery modules. When the electrical module 50 is used in the energy storage device 10, the electrical module 50 is also housed within the cabinet 20. The DC control module 82 functions to control the charging and discharging of the battery unit 30. The DC control module 82 also functions to disconnect the circuit of the battery unit 30 in case of abnormal conditions.

[0110] The airflow from the outlet side of the first vent 711 flows toward the front wall 61, then changes direction after being blocked, flowing toward the left wall 63, and then changes direction again after being blocked, flowing toward the rear wall 62. The airflow flows toward the rear wall 62 and passes through the fuse 821.

[0111] The fuse 821 itself generates relatively a large amount of heat. The airflow velocity is relatively fast in the areas near the front wall 61 and the left wall 63. The way the fuse 821 is positioned close to the left wall 63 allows the airflow to dissipate heat more quickly, reducing the possibility of heat accumulation around the fuse 821 and causing the fuse 821 to overheat. This ensures that the fuse 821 can operate stably and reduces the possibility of false alarms due to improper heat dissipation of the fuse 821.

[0112] In some examples, the DC control module 82 includes a wiring section located outside the front wall 61. The wiring section of the DC control module 82 is configured to connect to devices (such as battery device 30, inverter 40) outside the electrical module 50.

[0113] See in some examples Figure 2 and Figure 3 As shown, electrical component 80 includes an AC control module 83. The AC control module 83 includes a copper busbar 831 connected to external AC power from the energy storage device 10. The copper busbar 831 is located on the outlet side of the first vent 711. Along the first direction X, the copper busbar 831 is located between the isolator 70 and the front wall 61.

[0114] In some examples, energy storage device 10 includes inverter 40 (see [link]). Figure 12(As shown). Inverter 40 is housed within cabinet 20. When electrical module 50 is used in energy storage device 10, electrical module 50 is also housed within cabinet 20. The AC control module 83 includes functions to protect inverter 40. When a load is connected to energy storage device 10, the AC control module 83 also protects the load. For example, the AC control module 83 includes a circuit breaker.

[0115] The copper busbar 831 of the AC control module 83 transmits AC power. The copper busbar 831 itself generates relatively a lot of heat. The airflow on the outlet side of the first vent 711 has a relatively low temperature and a relatively fast flow rate, which allows the airflow to disperse the heat around the copper busbar 831, reducing the possibility of heat accumulation around the copper busbar 831 and causing the copper busbar 831 to overheat, thus allowing the AC control module 83 to operate stably and normally.

[0116] In some examples, the AC control module 83 includes a wiring section located outside the front wall 61. The wiring section of the AC control module 83 is configured to connect to external devices. For example, external devices may include an inverter 40, the power grid, or a load.

[0117] See also some of the possible implementation methods. Figure 2 and Figure 3 As shown, the electrical component 80 includes an auxiliary power supply 81. Along the first direction X, the auxiliary power supply 81 is arranged adjacent to the first fan 90 and located on the air outlet side of the first vent 711.

[0118] The auxiliary power supply 81 is relatively sensitive to temperature. The airflow on the outlet side of the first vent 711 has a relatively low temperature and a relatively fast flow rate, which allows the airflow to dissipate the heat around the auxiliary power supply 81, reducing the possibility of heat accumulation around the auxiliary power supply 81 and causing the temperature of the auxiliary power supply 81 to be too high, so that the temperature-sensitive auxiliary power supply 81 can work stably.

[0119] In some examples, the auxiliary power supply 81 includes an AC auxiliary power supply 812, which draws power from an external source, such as the electrical module 50. For example, the AC auxiliary power supply 812 draws power from an external power grid. The AC auxiliary power supply 812 can output DC power. The first fan 90 is connected to the AC auxiliary power supply 812. The AC auxiliary power supply 812 is configured to provide power to the first fan 90 to enable its normal operation. The housing 60 is a closed structure, and the AC auxiliary power supply 812 inside the housing 60 improves the convenience and reliability of powering the first fan 90 while reducing the likelihood of needing to create wiring openings in the housing 60 due to the use of an external power supply.

[0120] In some examples, the AC auxiliary power supply 812 is connected to the AC control module 83. The AC auxiliary power supply 812 obtains power from an external source and provides power to the AC control module 83. The AC auxiliary power supply 812 obtains power from an external source (e.g., the external power grid) and outputs DC power. The AC control module 83 includes a circuit board and components mounted on the circuit board. The AC auxiliary power supply 812 is configured to provide power to the circuit board and components to enable the AC control module 83 to function properly. The AC auxiliary power supply 812 can improve the convenience and reliability of powering the AC control module 83.

[0121] In some examples, auxiliary power supply 81 includes a DC auxiliary power supply 811. The DC auxiliary power supply 811 is connected to and draws power from the DC control module 82. The DC auxiliary power supply 811 provides power to the AC control module 83.

[0122] The DC auxiliary power supply 811 obtains power from the DC control module 82 and outputs DC power. The AC control module 83 includes a circuit board and components mounted on the circuit board. The DC auxiliary power supply 811 is configured to provide power to the circuit board and components to enable the AC control module 83 to operate normally. The DC auxiliary power supply 811 can improve the convenience and reliability of powering the AC control module 83.

[0123] In some possible implementations, the housing 60 includes a left wall 63 and a right wall 64 spaced apart along a second direction Y, and a top wall 65 and a bottom wall 66 spaced apart along a third direction Z. The left wall 63, right wall 64, top wall 65, bottom wall 66, front wall 61, and rear wall 62 are interconnected to form a closed receiving space. A closed receiving space means that the housing 60 does not have any heat dissipation openings. The housing 60 has waterproof requirements, such as meeting an IP65 protection rating, so that the housing 60 can protect the electrical components 80 inside the housing 60. The receiving space inside the housing 60 is not connected to the external environment and is an independent space.

[0124] In some feasible embodiments, both the top wall 65 and the bottom wall 66 are connected to the isolator 70, which helps to block airflow between the isolator 70 and the top wall 65 and between the isolator 70 and the bottom wall 66, reducing the likelihood of noise generation and reduced heat dissipation.

[0125] In some examples, both the top wall 65 and the bottom wall 66 are connected to the main body 71. Exemplarily, the connection methods include, but are not limited to, adhesive connection, welding connection, or abutment connection. Both the top wall 65 and the bottom wall 66 are connected to the inclined portion 72. Exemplarily, the connection methods include, but are not limited to, adhesive connection, welding connection, or abutment connection.

[0126] See also some of the possible implementation methods. Figure 7 and Figure 8 As shown, the electrical module 50 includes a flow guide 110. The flow guide 110 is disposed outside the housing 60 and connected to the housing 60. A second air inlet channel 502 is provided between the flow guide 110 and the housing 60.

[0127] See also some of the possible implementation methods. Figure 7 and Figure 8 As shown, the airflow guide 110 includes a third vent 1101 communicating with the second air inlet channel 502. Airflow flows within the second air inlet channel 502. The second fan 100 is configured to drive airflow through the second air inlet channel 502 and the third vent 1101. The second air inlet channel 502 and the third vent 1101 are airflow circulation channels outside the housing 60. The second air inlet channel 502 and the internal space of the housing 60 are independent of each other and are not interconnected.

[0128] See in some examples Figure 8 As shown, the second air inlet channel 502 includes a third sub-channel 5021 and a fourth sub-channel 5022. A guide member 110 is connected to the bottom wall 66, and the guide member 110 and the bottom wall 66 form the third sub-channel 5021. The guide member 110 is connected to the rear wall 62, and the guide member 110 and the rear wall 62 form the fourth sub-channel 5022. The third vent 1101 communicates with the fourth sub-channel 5022.

[0129] See in some examples Figure 7 and Figure 8 As shown, the flow guide 110 includes a base 1102 and a side portion 1103 connected to the base 1102. The base 1102 is connected to the bottom wall 66 and forms a third sub-channel 5021. The side portion 1103 is connected to the rear wall 62 and forms a fourth sub-channel 5022. Along the first direction X, the base 1102 extends beyond the bottom wall 66.

[0130] See also some of the possible implementation methods. Figure 8 As shown, the rear wall 62 and the second fan 100 are arranged along the first direction X, with the second fan 100 located on the rear side of the rear wall 62.

[0131] In some feasible implementations, the second fan 100 is located within the fourth sub-channel 5022. This enhances heat dissipation from the rear wall 62.

[0132] In some feasible implementations, the third vent 1101 is an air outlet, and the rear wall 62 and the third vent 1101 are arranged along the first direction X, with the third vent 1101 located behind the rear wall 62. The air intake direction S2 of the second air intake channel 502 is towards the rear wall 62, and the airflow on the exhaust side of the first vent 711 is towards the front wall 61. The airflow near the front wall 61 in the second air intake channel 502 is cold air, while the airflow near the front wall 61 in the exhaust side of the first vent 711 is hot air. This helps to reduce the temperature of the airflow inside the housing 60 and improves the heat dissipation of the electrical components 80.

[0133] Electrical components 80 are connected and fixed to the bottom wall 66. The heat generated by electrical components 80 can be dissipated relatively quickly through the bottom wall 66, resulting in a relatively high temperature for the bottom wall 66. The way in which the guide member 110 forms a third sub-channel 5021 with the bottom wall 66 allows the third sub-channel 5021 to contact the bottom wall 66 and exchange heat, which helps to improve the heat dissipation efficiency of the housing 60 and enhance the heat dissipation effect.

[0134] The airflow in the fourth sub-channel 5022 can exchange heat with the rear wall 62 of the housing 60, which can reduce the airflow temperature in the first air inlet channel 501 and further improve the heat dissipation of electrical components 80.

[0135] The second fan 100 is located within the fourth sub-channel 5022. The airflow guide 110 can protect the second fan 100, reducing the possibility of structural damage to the second fan 100 due to impact or compression.

[0136] See also some of the possible implementation methods. Figure 9 , Figure 10 and Figure 11 As shown, the air guide 110 includes a connected cylindrical body 111 and an end plate 112. The end plate 112 is disposed at one end of the cylindrical body 111. The housing 60 is located inside the cylindrical body 111. The second air inlet channel 502 includes a third sub-channel 5021 and a fourth sub-channel 5022. The annular space formed between the housing 60 and the cylindrical body 111 serves as the third sub-channel 5021. The fourth sub-channel 5022 is formed between the rear wall 62 and the end plate 112. The second fan 100 is located within the fourth sub-channel 5022. The end plate 112 is provided with a third vent 1101.

[0137] A third sub-channel 5021 is arranged around the circumference of the housing 60. For example, the third sub-channel 5021 is arranged around the left wall 63, top wall 65, right wall 64, and bottom wall 66. The airflow in the third sub-channel 5021 can contact and exchange heat with the entire circumferential area of ​​the housing 60, increasing the contact area between the airflow and the housing 60, which is beneficial to improving the heat dissipation efficiency of the housing 60 and enhancing the heat dissipation effect.

[0138] After the airflow in the third sub-channel 5021 enters the fourth sub-channel 5022, the flow velocity decreases. The airflow in the fourth sub-channel 5022 can exchange heat with the entire rear wall 62 of the housing 60. The airflow in the fourth sub-channel 5022 and the entire rear wall 62 can exchange heat for a relatively long time, which is beneficial to improving heat dissipation efficiency.

[0139] See also some of the possible implementation methods. Figures 8 to 10 As shown, the electrical module 50 includes heat exchange fins 120. The heat exchange fins 120 are disposed within the second air inlet channel 502. The heat exchange fins 120 can increase the heat transfer area, enhance the heat transfer process, and improve the heat exchange efficiency between the housing 60 and the airflow within the second air inlet channel 502.

[0140] In some examples, the heat exchange fins 120 may be attached to the bottom wall 66 of the housing 60. Exemplarily, the heat exchange fins 120 may be bonded to the bottom wall 66 with thermally conductive adhesive. Alternatively, the heat exchange fins 120 may be welded to the bottom wall 66.

[0141] In some examples, the second air inlet channel 502 includes a third sub-channel 5021 and a fourth sub-channel 5022. The third sub-channel 5021 has an air inlet near the front wall 61. Heat exchange fins 120 are positioned near the air inlet of the third sub-channel 5021. Exemplarily, along the first direction X, the size of the heat exchange fins 120 is smaller than the size of the third sub-channel 5021. Alternatively, the heat exchange fins 120 may be disposed throughout the entire third sub-channel 5021.

[0142] In some examples, the material of the heat exchange fins 120 may include, but is not limited to, aluminum or aluminum alloys.

[0143] See also some of the possible implementation methods. Figure 8 or Figure 9 As shown, along the third direction Z, the second fan 100 does not extend beyond the bottom wall 66. Along the opposite direction Z, the second fan 100 does not extend beyond the top wall 65. This reduces the space occupied by the second fan 100 along the third direction Z, which is beneficial for miniaturizing the electrical module 50 in this direction. When the electrical module 50 is used in the energy storage device 10, its low space occupancy in the third direction Z helps save internal space in the energy storage device 10 in this direction.

[0144] In this embodiment of the energy storage device 10, the cabinet 20 provides a mounting base for the battery device 30. The cabinet 20 protects the battery device 30, reducing the possibility of structural damage due to collision. When the energy storage device 10 needs to discharge externally, the battery device 30 can output electrical energy. The external power grid can also input electrical energy into the battery device 30 to charge it. The battery device 30 is a device that can convert electrical energy into chemical energy and vice versa.

[0145] Airflow with relatively low external temperature can enter the cabinet 20 through the first heat dissipation hole 211. The airflow can exchange heat with the electrical module 50 and then exit through the second heat dissipation hole, thus dissipating heat from the electrical module 50. The arrangement of the electrical module 50 between the first and second heat dissipation holes along the first direction X improves heat dissipation efficiency.

[0146] Airflow through the first heat dissipation hole 211 can quickly enter the second air intake channel 502, and airflow discharged from the third vent 1101 can quickly exit from the second heat dissipation hole, which helps to improve the heat dissipation efficiency of the electrical module 50.

[0147] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electrical module, characterized in that, include: The housing includes a front wall and a rear wall spaced apart along a first direction; An isolation component is disposed within and connected to the housing. The isolation component includes a main body and an inclined portion. The main body is provided with a first vent. The included angle between the main body and the inclined portion is an obtuse angle, and the obtuse angle is located on the air outlet side of the first vent. The first air intake channel is located between the isolation component and the rear wall, and is connected to the first vent. Multiple electrical components are located inside the housing, with at least some of the electrical components disposed on the air outlet side of the first vent. A first fan is disposed within the housing and is configured to drive air through the first vent and the first air intake channel; A second fan is disposed outside the housing and is configured to dissipate heat from the housing.

2. The electrical module according to claim 1, characterized in that, The housing includes a left wall and a right wall spaced apart along a second direction, wherein the first direction is perpendicular to the second direction; A gap for airflow is provided between the inclined portion and the left wall, the main body is connected to the right wall, the inclined portion and the rear wall are separated, and the obtuse angle is 130° to 170°.

3. The electrical module according to claim 2, characterized in that, The first air inlet channel includes a first sub-channel and a second sub-channel. The main body and the rear wall form the first sub-channel. Along the air inlet direction of the first air inlet channel, the first sub-channel gradually becomes smaller. The inclined portion and the rear wall form the second sub-channel, which gradually decreases in size along the air intake direction of the first air intake channel.

4. The electrical module according to claim 3, characterized in that, The length of the projection of the isolation member along the first direction along the second direction is K2, where 1 / 2 ≤ K1 / K2 ≤ 2 / 3.

5. The electrical module according to claim 1, characterized in that, The housing includes a left wall and a right wall spaced apart along a second direction, wherein the first direction is perpendicular to the second direction; The inclined portion is connected to the left wall, the main body portion is connected to the right wall, and the obtuse angle is greater than 180° and less than 270°; A second vent is provided on the inclined portion, and the second vent is connected to the first air inlet channel. The first fan is configured to drive air through the first vent, the second vent, and the first air inlet channel.

6. The electrical module according to claim 5, characterized in that, The first air inlet channel includes a first sub-channel and a second sub-channel. The main body and the rear wall form the first sub-channel. Along the air inlet direction of the first air inlet channel, the first sub-channel gradually becomes smaller. The inclined portion and the rear wall form the second sub-channel, which gradually increases in size along the air intake direction of the first air intake channel.

7. The electrical module according to any one of claims 1 to 6, characterized in that, The first fan is disposed on the main body, located on the air inlet side of the first vent, and facing the first vent.

8. The electrical module according to any one of claims 1 to 7, characterized in that, The housing includes a left wall and a right wall spaced apart along a second direction, and a top wall and a bottom wall spaced apart along a third direction; The left wall, the right wall, the top wall, the bottom wall, the front wall, and the rear wall are interconnected and form a closed receiving space.

9. The electrical module according to claim 8, characterized in that, Both the top wall and the bottom wall are connected to the insulating member.

10. The electrical module according to any one of claims 1 to 9, characterized in that, The electrical module includes a flow guide, which is disposed outside the housing and connected to the housing, and a second air inlet channel is provided between the flow guide and the housing; The air guide includes a third vent that communicates with the second air intake channel, and the second fan is configured to drive air through the second air intake channel and the third vent.

11. The electrical module according to claim 10, characterized in that, The housing includes a top wall and a bottom wall spaced apart along a third direction, wherein the first direction is perpendicular to the third direction. The second air inlet channel includes a third sub-channel and a fourth sub-channel. The guide member is connected to the bottom wall and forms the third sub-channel. The guide member is connected to the rear wall and forms the fourth sub-channel. The second fan is located on the rear side of the rear wall. The third ventilation opening is an air outlet and is located on the rear side of the rear wall.

12. The electrical module according to claim 11, characterized in that, The housing includes a top wall and a bottom wall disposed opposite each other along a third direction, wherein the first direction is perpendicular to the third direction. Along the third direction, the second fan does not extend beyond the bottom wall; in the direction opposite to the third direction, the second fan does not extend beyond the top wall.

13. An energy storage device, characterized in that, include: The cabinet includes a front door panel and a rear door panel spaced apart along a first direction, the front door panel including a first heat dissipation hole, and the rear door panel including a second heat dissipation hole; The electrical module as described in any one of claims 1 to 12 is disposed within the cabinet.

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