Transformer assembly and energy storage tank

Abstract

The application relates to the technical field of energy storage, in particular to a transformer assembly and an energy storage box. The transformer assembly comprises a first air cooling assembly, a first air duct, a second air duct and a third air duct, and the first air duct and the second air duct are communicated through the third air duct. The first air cooling assembly is arranged opposite to the first air duct and the second air duct along a first direction, a first air outlet of the first air cooling assembly is opposite to the first air duct along the first direction, and an air inlet is opposite to the second air duct along the first direction. A first conductive device is arranged in the first air duct, and a second conductive device is arranged in the second air duct. Further, the cold air blown out by the first air cooling assembly can flow in the first air duct to dissipate heat of the first conductive device, and the cold air can continue to flow into the second air duct to dissipate heat of the second conductive device, so that the flow path of the cold air is long, and the heat dissipation effect is improved.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a transformer assembly and an energy storage box. Background Technology

[0002] Energy storage boxes typically require the configuration of corresponding transformer components to transform voltage during charging and discharging, or to isolate the impact of impulsive loads during startup (such as isolating the large current impact when an induction motor starts), and to protect the internal circuitry of the energy storage box.

[0003] However, a large amount of heat is generated during the operation of transformer components. Currently, the heat dissipation efficiency of transformer components is relatively low, causing them to operate at high temperatures continuously, reducing their service life and potentially leading to safety issues. Summary of the Invention

[0004] Embodiments of this application provide a transformer assembly and an energy storage box.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, embodiments of this application provide a transformer assembly, comprising: a first air duct and a second air duct, the first and second air ducts extending along a first direction and sequentially arranged along the height direction of the transformer assembly, the first direction being perpendicular to the height direction. A third air duct extending along the height direction of the transformer assembly, and the first and second air ducts connected through the third air duct. A first air-cooling assembly disposed opposite to the first and second air ducts along the first direction, the first air-cooling assembly including a cooling channel, a first air outlet and an air inlet, the first air outlet and the air inlet connected through the cooling channel, the first air outlet opposite to the first air duct along the first direction, and the air inlet opposite to the second air duct along the first direction. A transformer body, on which a first conductive device and a second conductive device are connected, the first conductive device, the second conductive device and the transformer body sequentially arranged along the height direction, the first conductive device disposed in the first air duct, and the second conductive device disposed in the second air duct.

[0007] In this transformer assembly, the first air outlet and air inlet of the air-cooled component are respectively aligned with different air ducts. This prevents the cold air from the first air outlet from rapidly flowing back to the air inlet, thus effectively cooling the unit. Furthermore, there are no other components obstructing airflow within the first and second air ducts, allowing the cold air from the first air outlet to reach a greater distance, thereby improving the heat dissipation effect of the first air-cooled component. This reduces the overall temperature of the transformer assembly, ensuring the lifespan of each component within the transformer assembly and minimizing safety hazards.

[0008] In one possible implementation of the first aspect described above, the first direction is the length direction of the transformer assembly.

[0009] In one possible implementation of the first aspect described above, the above further includes a second air-cooling component disposed along the height direction on the side of the transformer body facing away from the second conductive device. The second air-cooling component includes a second air outlet facing the transformer body.

[0010] In this possible implementation, the transformer body can be cooled by a second air-cooling component, thereby further improving the heat dissipation effect of the transformer assembly.

[0011] In one possible implementation of the first aspect described above, the above also includes a cooling assembly disposed along the height direction on the side opposite to the second air-cooled assembly and the transformer body.

[0012] In this possible implementation, the cooling component can cool the air at the bottom of the second air-cooling component, and the second air-cooling component can then blow the cooling air to the vicinity of the transformer body to further improve the heat dissipation effect on the transformer body.

[0013] In one possible implementation of the first aspect described above, a first fan is further provided in the first air duct, and the first fan includes a third air outlet facing the first direction.

[0014] In this possible implementation, the airflow velocity within the first duct can be increased by the first fan to improve the heat dissipation effect on the first conductive device.

[0015] In one possible implementation of the first aspect above, a second fan is provided in the third air duct. Along the height direction, the position of the second fan is lower than that of the second air duct. The second fan includes a fourth air outlet, the orientation of which is opposite to the height direction.

[0016] In this possible implementation, the second fan can blow a portion of the cool air flowing out of the first air duct downwards to dissipate heat from the transformer body below, thereby improving the heat dissipation effect on the transformer body.

[0017] In one possible implementation of the first aspect described above, along the height direction, a first electronic device is further connected between the first conductive device and the second conductive device. Along the second direction, the first electronic device and the first conductive device are arranged side-by-side. The second direction is perpendicular to the first direction and also perpendicular to the height direction. A third fan is also included, which is arranged opposite to the first electronic device along the first direction. The third fan includes a fifth air outlet, the orientation of which is opposite to the first direction.

[0018] In this possible implementation, the first electronic device may be located outside the first and second air ducts. For this purpose, a third fan can be used to dissipate heat from the first electronic device, thereby ensuring that each device in the transformer assembly can be effectively cooled, and thus improving the overall heat dissipation effect of the transformer assembly.

[0019] In one possible implementation of the first aspect described above, the first electronic device is a circuit breaker.

[0020] In one possible implementation of the first aspect described above, the first conductive device and the second conductive device are copper busbars.

[0021] Secondly, embodiments of this application provide an energy storage box, including a box body, a battery assembly, a liquid cooling assembly, and a transformer assembly as described in the first aspect and any possible implementation thereof. The box body has a receiving cavity, in which the battery assembly and the transformer assembly are arranged side-by-side along a third direction perpendicular to the thickness direction of the box body. The liquid cooling assembly provides a cold source for a first air-cooled assembly and / or a second air-cooled assembly in the transformer assembly. The beneficial effects of the second aspect can be referred to in the first aspect and any possible implementation thereof, and will not be repeated here. Attached Figure Description

[0022] Figure 1 A schematic diagram of a transformer assembly is shown;

[0023] Figure 2 According to some embodiments of this application, a structural schematic diagram of an energy storage box is shown;

[0024] Figure 3 According to some embodiments of this application, a schematic diagram of the structure of a transformer assembly is shown;

[0025] Figure 4 According to some embodiments of this application, a schematic diagram of the cross-sectional structure of a transformer assembly is shown. Figure 3 (AA section diagram)

[0026] Figure 5 According to some embodiments of this application, a schematic diagram of another transformer assembly is shown. Detailed Implementation

[0027] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0028] The illustrative embodiments of this application include, but are not limited to, a transformer assembly and an energy storage box.

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0030] As shown in the background section, the heat dissipation efficiency of transformer components is currently low, causing them to operate continuously at high temperatures, reducing their service life and potentially leading to safety issues.

[0031] Before introducing the transformer assembly, a coordinate system for the transformer assembly can be established. In the figures of this article, the X direction is the length direction of the transformer assembly. For example, when the transformer assembly is placed normally, the X direction can be the direction from the front end of the transformer assembly to the rear end. The Y direction is the width direction of the transformer assembly. For example, when the transformer assembly is placed normally, the Y direction can be the direction from the left end of the transformer assembly to the right end. The Z direction is the height direction of the transformer assembly. For example, when the transformer assembly is placed normally, the Z direction is the direction from the bottom end of the transformer assembly to the top end. The X, Y, and Z directions intersect each other. For example, the X, Y, and Z directions can be perpendicular to each other. In this application, the height or thickness dimension is the dimension along the Z direction, which will not be elaborated further below.

[0032] It is understood that the parallelism in this application is not absolute parallelism; approximate parallelism due to processing and assembly errors is also within the scope of parallelism in this application. For example, when the included angle between two structural features is less than or equal to 2° (e.g., 0.1°, 0.2°, 2°, etc.), they can be considered parallel. Similarly, the perpendicularity in this application is not absolute perpendicularity; approximate perpendicularity due to processing and assembly errors is also within the scope of perpendicularity in this application. For example, when the included angle between two structural features is 88° to 92° (e.g., 88°, 89°, 91°, etc.), they can be considered perpendicular. The limitations on parallelism and perpendicularity will not be repeated below.

[0033] Additionally, it should be noted that the directional terms such as "upper," "lower," "left," "right," "front," "back," "top," and "bottom" used in this document refer to the orientation of the device under normal use, and do not indicate or imply that the component referred to must have a specific orientation. These terms can change accordingly based on actual use and should not be construed as limiting this application.

[0034] As an example, Figure 1 A schematic diagram of a transformer assembly is shown. (Refer to...) Figure 1 The transformer assembly 100 includes a transformer body 10, a first conductive device 20, a second conductive device 30, a first electronic device 40, and a first air-cooling assembly 50.

[0035] In this embodiment, the first conductive device 20 and the second conductive device 30 are connected to the transformer body 10, and are arranged sequentially along the Z-direction. The first conductive device 20 and the second conductive device 30 form the conductive circuit of the transformer body 10, and can be used to connect the first electronic device 40, the power conversion system (PCS) (or "energy storage converter assembly"), and the energy storage power supply of the energy storage tank, etc., for power supply or communication. The first electronic device 40 can be a circuit breaker or other device, and the first conductive device 20 and the second conductive device 30 can be copper busbars or other conductive devices; the embodiments of this application are not limited to these.

[0036] The first air-cooled component 50 includes a cooling channel 51, a first air outlet 52, and an air inlet 53, with the first air outlet 52 and the air inlet 53 connected through the cooling channel 51. The cooling channel 51 contains a cold source. The first air outlet 52 blows out air cooled by the cold source from within the cooling channel 51, while the air inlet 53 draws in high-temperature air from the outside. This high-temperature air is cooled by the cold source upon entering the cooling channel 51, thus achieving the cooling effect of the first air-cooled component 50. In some embodiments, the first air-cooled component 50 can be a fan coil unit. A fan blows air outward from the first air outlet 52, and the coil unit acts as a cold source within the cooling channel to cool the high-temperature air entering the cooling channel 51.

[0037] Continue to refer to Figure 1 In the current transformer assembly 100, the first air outlet 52 and air inlet 53 of the first air-cooling assembly 50 are opposite to the transformer body 10 along the X direction. The airflow path L1 formed by the first air outlet 52 and air inlet 53 only flows near the transformer body 10. Furthermore, due to the obstruction of the transformer body 10, the airflow speed is slow, and more airflow flows quickly into the air inlet 53 after exiting from the first air outlet 52. Therefore, the heat dissipation efficiency is low.

[0038] Furthermore, when the transformer assembly 100 is in operation, a large current flows through the first conductive device 20 and the second conductive device 30, causing their temperatures to rise rapidly. However, the first air-cooling assembly 50 cannot effectively cool the first conductive device 20 and the second conductive device 30, resulting in the first conductive device 20 and the second conductive device 30 constantly operating in a high-temperature environment. Additionally, the temperature of the electronic components connected to the first conductive device 20 and the second conductive device 30 also rises. Therefore, the entire transformer assembly 100 operates at a high temperature, affecting its service life and posing safety risks.

[0039] The first and second air ducts extend along the X-direction (as an example of the first direction) and are sequentially arranged along the Z-direction. A third air duct extends along the Z-direction, and the first and second air ducts are connected through the third air duct. A first air-cooling assembly is arranged opposite to the first and second air ducts along the X-direction. The first air-cooling assembly includes a cooling channel, a first air outlet, and an air inlet. The first air outlet and air inlet are connected through the cooling channel. The first air outlet is opposite to the first air duct along the X-direction, and the air inlet is opposite to the second air duct along the X-direction. A first conductive device and a second conductive device are connected to the transformer body. Along the Z-direction, the first conductive device, the second conductive device, and the transformer body are sequentially arranged. The first conductive device is located in the first air duct, and the second conductive device is located in the second air duct.

[0040] With the above scheme, the first air outlet and air inlet of the air-cooled component are opposite to different air ducts, thus preventing the cold air from the first air outlet from quickly flowing back to the air inlet, thereby effectively cooling the system. Furthermore, there are no other components obstructing airflow within the first and second air ducts, allowing the cold air blown from the first air outlet to reach a greater distance, thereby improving the heat dissipation effect of the first air-cooled component, reducing the overall temperature of the transformer assembly, ensuring the service life of each component within the transformer assembly, and reducing safety hazards.

[0041] In embodiments of this application, the transformer assembly can be configured inside the energy storage box, thereby integrating it with components such as energy storage batteries and energy storage converters into a single enclosure to reduce footprint and facilitate deployment. In other embodiments, the transformer assembly can also be highly integrated with equipment such as PCS and high / low voltage switches into a single compartment, and then electrically connected to the transformer, thereby enabling the energy storage box to integrate more energy storage batteries and increase its energy storage capacity. The following describes the energy storage box and transformer assembly in embodiments of this application, using the integration of the transformer assembly inside the energy storage box as an example.

[0042] As an example, Figure 2 According to some embodiments of this application, a structural schematic diagram of an energy storage box is shown. (Refer to...) Figure 2 In the embodiments of this application, the energy storage box 1 may include a box body 01, a battery assembly 02, a liquid cooling assembly 03, and a transformer assembly 100. The length direction of the energy storage box 1 may be parallel to the X direction, the width direction of the energy storage box 1 may be parallel to the Y direction (which can be considered as an example of a third direction), and the height direction of the energy storage box 1 may be parallel to the Z direction.

[0043] Continue to refer to Figure 2The housing 01 has a receiving cavity 011, in which the battery assembly 02 and the transformer assembly 100 are disposed. The liquid cooling assembly 03 is used to provide a cold source for the transformer assembly 100 and to dissipate heat from the battery assembly 02. For example, a cooling pipe 031 is also arranged in the receiving cavity 011, which can deliver a cold source to the battery assembly 02 and the transformer assembly 100.

[0044] The battery assembly 02 may include N battery cabinets 021, which are arranged sequentially along the Y direction. Here, N is a positive integer; for example, the value of N can be set according to the size of the battery cabinets 021 and the size of the receiving cavity 011. For example, refer to... Figure 2 N can be 2. In other embodiments, N can also be 3, 4, 5, etc.

[0045] The battery cabinet 021 can be formed by stacking M energy storage batteries 0211 along the Z direction, where M is a positive integer, for example, M can be 7, 8, 9, etc., and the embodiments of this application do not limit this. The energy storage batteries 0211 are used to store electrical energy. For example, during off-peak electricity consumption periods, the energy storage batteries 0211 can be charged through the power grid and transformer assembly 100 to store electrical energy. During peak electricity consumption periods, the energy storage batteries 0211 and transformer assembly 100 can supply power to the load equipment to reduce electricity consumption pressure.

[0046] In some embodiments of this application, the transformer assembly 100 can transform the voltage during the charging and discharging process of the battery assembly 02, or protect the electronic components in the energy storage box 1, and save the electronic components in the energy storage box 1 to reduce costs.

[0047] For example, battery module 02 can be used for bidirectional energy conversion via PCS. When charging battery module 02, PCS uses its internal insulated-gate bipolar transistors (IGBTs) to rectify the AC power generated by the charging equipment (such as the power grid or photovoltaic system) into DC power suitable for charging battery module 02, storing the electrical energy. When battery module 02 is discharging, PCS can convert the released DC power back into AC power for use by the load equipment. The load voltage of battery module 02 is typically 400V, while the voltage provided by the power grid is typically 400V, 10KV, 20KV, or 35KV. The voltage levels of PSC typically include 400V, 690V, and 800V. During charging and discharging, if the voltage provided by the power grid does not match the voltage level of PCS or the load voltage of battery module 02, voltage conversion is required via transformer assembly 100.

[0048] In a PCS (Power Control System), IGBTs are current-limited. If the PCS uses the same IGBT current (e.g., both AC 180A), the power of a 400V output PCS is 125kW, while the power of a 690V output PCS is 215kW. Therefore, with the same output power, a 400V PCS requires more IGBTs than a 690V PCS, resulting in a higher cost for the 400V PCS. In the embodiments of this application, if cost savings are desired, a 690V PCS can be used in the energy storage tank 1. This allows for increased power output and a reduced per-watt price for the PCS while maintaining the same IGBT current.

[0049] The transformer assembly 100 can isolate the impact of starting impulsive loads. For example, when the induction motor in the energy storage tank 1 starts, the inrush current can reach 6 to 8 times the rated current, which can easily cause the preload circuit (PCS) to overload and shut down. To avoid PCS overload shutdown, more PCS would need to be configured, thus increasing the cost of the energy storage tank 1. However, the transformer assembly 100 can effectively reduce the inrush current. Therefore, if the energy storage tank 1 is equipped with the transformer assembly 100, fewer PCS are needed, thereby reducing the cost of the energy storage tank 1.

[0050] In the embodiments of this application, a low-cost three-phase three-arm PCS can be used for rectification and conversion. However, the load on the three phases of the three-phase three-arm PCS needs to be balanced; otherwise, it can easily cause circuit instability and affect the use of electronic devices. However, by using the transformer assembly 100, the load-carrying capacity of the phase imbalance load of the three-phase three-arm PCS can be improved, thereby eliminating the need for a high-cost three-phase four-arm PCS and reducing the cost of the energy storage box 1.

[0051] During the charging and discharging process of battery module 02, when the grid and PCS are at the same voltage (e.g., both 400V), because both the photovoltaic inverter and PCS are power electronic devices, they achieve AC / DC conversion through the fast switching of IGBTs (typically reaching frequencies of several kilohertz to tens of kilohertz). During the switching process, the switching frequency and phase cannot be exactly the same, so circulating currents can easily form between the photovoltaic inverter and PCS. These circulating currents not only reduce the load-carrying capacity of the PCS and increase energy consumption, but also cause significant harmonic pollution, easily leading to overvoltage breakdown of the photovoltaic inverter or PCS load and damaging the equipment. Transformer module 100 can reduce the high-frequency circulating currents of the photovoltaic inverter and PCS on the grid, thereby protecting the electronic components.

[0052] Therefore, in the embodiments of this application, the energy storage box 1 needs to be equipped with a transformer assembly 100, and the transformer assembly 100 is integrated into the energy storage box 1, thereby facilitating the transportation and deployment of the energy storage box 1. Continuing to refer to... Figure 2The battery assembly 02 and the transformer assembly 100 are arranged side by side in the receiving cavity 011 along the Y direction. It is understood that the transformer assembly 100 will generate a lot of heat during operation, and the heat generated by the transformer assembly 100 will also interfere with the battery assembly 02. Therefore, in some embodiments of this application, it is necessary to ensure the heat dissipation effect of the transformer assembly 100.

[0053] The transformer assembly 100 in the embodiments of this application is described below. As an example, Figure 3 According to some embodiments of this application, a schematic diagram of a transformer assembly 100 is shown. The transformer assembly 100 includes a transformer body 10, a first conductive device 20, a second conductive device 30, and a first electronic device 40. The relative positions and detailed structures of the transformer body 10, the first conductive device 20, the second conductive device 30, and the first electronic device 40 can be found in [reference needed]. Figure 1 Implementation examples from China.

[0054] Reference Figure 3 ,and Figure 1 Unlike the transformer assembly 100 in the previous embodiment, the transformer assembly 100 in this application embodiment has a first air duct F1, a second air duct F2, and a third air duct F3. The first air duct F1 and the second air duct F2 extend along the X direction and are sequentially arranged along the Z direction. The third air duct F3 extends along the Z direction, and the first air duct F1 and the second air duct F2 are connected through the third air duct F3. In this embodiment, airflow can flow in the first air duct F1, the second air duct F2, and the third air duct F3 without obstruction. Therefore, the airflow path within the air ducts is relatively long, and introducing cool air into each air duct helps to dissipate heat from the transformer assembly 100.

[0055] In embodiments of this application, the first air duct F1 may be formed by a first partition B1 and a second partition B2 disposed opposite to each other along the Z direction, and the second partition B2 is also used to separate the first air duct F1 and the second air duct F2. The first partition B1 and the second partition B2 extend along the X direction, and the dimension of the first partition B1 along the X direction is larger than the dimension of the second partition B2 along the X direction. Along the X direction, the portion of the first partition B1 that extends beyond the second partition B2 is also used to form a third air duct F3. The transformer assembly 100 also includes a third partition B3, which may be connected to the first partition B1. The third partition B3 extends along the Z direction to form the third air duct F3.

[0056] The first air-cooling assembly 50 is positioned opposite the first air duct F1 and the second air duct F2 along the X direction. The first air outlet 52 of the first air-cooling assembly 50 is opposite the first air duct F1 along the X direction, and the air inlet 53 is opposite the second air duct F2 along the X direction. A first conductive device 20 is disposed in the first air duct F1, and a second conductive device 30 is disposed in the second air duct F2. The low-temperature air blown out from the first air outlet 52 can flow within the first air duct F1 to dissipate heat from the first conductive device 20 in the first air duct F1. Then, the air enters the second air duct F2 through the third air duct F3, thereby dissipating heat from the second conductive device 30 in the second air duct F2. Afterward, the air enters the cooling channel 51 inside the first air-cooling assembly 50 from the air inlet 53 (see reference). Figure 1 The cooling channel 51 in the transformer assembly 100 provides cooling, and the cold source within the cooling channel 51 can be provided by the liquid cooling component 03. This forms a heat dissipation airflow path L2. The airflow path L2 is unobstructed and has a relatively long path within the transformer assembly 100, effectively dissipating heat from various components, thereby improving the heat dissipation effect of the first air-cooled component 50, reducing the temperature of the transformer assembly 100, and ensuring the operating condition of the transformer assembly 100.

[0057] In the aforementioned transformer assembly 100, although the first air-cooling component 50 can effectively dissipate heat from the first conductive device 20 and the second conductive device 30, its heat dissipation effect on the transformer body 10 is poor. Therefore, in some embodiments of this application, the transformer assembly 100 may also be provided with a component for dissipating heat from the transformer body 10.

[0058] As an example, Figure 4 According to some embodiments of this application, a schematic diagram of the cross-sectional structure of a transformer assembly is shown. Figure 3 (See the AA section diagram in the image). Figure 4 The transformer assembly 100 also includes a second air-cooling assembly 80, which is disposed along the Z-direction on the side of the transformer body 10 facing away from the second conductive device 30. The second air-cooling assembly 80 includes a second air outlet 81, which faces the transformer body 10. That is, the second air outlet 81 faces the Z-direction. Therefore, the second air-cooling assembly 80 can blow air onto the transformer body 10 through the second air outlet 81 to improve the heat dissipation effect of the transformer body 10. It can be understood that since the second air-cooling assembly 80 blows air upwards, the airflow passes through the transformer body 10 and reaches the second air duct F2, and then enters the first air-cooling assembly 50 for cooling. In this way, an airflow path L4 can be formed in the transformer assembly 100, thereby achieving a good heat dissipation effect on the transformer body 10, the first conductive device 20, and the second conductive device 30.

[0059] In some embodiments, the transformer assembly 100 further includes a cooling assembly H. Along the Z-direction, the cooling assembly H is disposed on the side opposite to the transformer body 10 of the second air-cooling assembly 80; that is, along the Z-direction, the cooling assembly H is disposed at the bottom of the transformer body 10. The length direction of the cooling assembly H can be perpendicular to the X-direction, and the length of the cooling assembly H can be the same as the dimension of the transformer body 10 along the Y-direction. The cooling assembly H can be a structure such as a coil, with coolant supplied by the liquid cooling assembly 03 connected inside the coil to cool the air near the second air-cooling assembly 80, thereby lowering the temperature of the air below the second air-cooling assembly 80. The second air-cooling assembly 80 can blow the low-temperature air below towards the transformer body 10, thereby further improving the heat dissipation effect of the transformer body 10. In some embodiments, a fourth baffle B4 can also be provided on the side wall of the transformer body 10 along the Y-direction to prevent the second air-cooling assembly 80 from diffusing outwards, thereby allowing more airflow to flow towards the transformer body 10 to improve the heat dissipation effect of the second air-cooling assembly 80 on the transformer body 10.

[0060] In some embodiments of this application, a first fan 60 may be provided in the first air duct F1 to increase the airflow velocity and thus improve the heat dissipation effect. The first fan 60 includes a third air outlet 61, which faces the X direction. This can further increase the airflow velocity within the first air duct F1, thereby improving the heat dissipation effect of the first conductive device 20.

[0061] In other embodiments, a second fan 70 may be provided within the third air duct F3 along the Z direction. The position of the second fan is lower than that of the second air duct F2. The second fan 70 includes a fourth air outlet 71, which faces away from the Z direction. In this way, the second fan 70 can blow a portion of the cool air flowing out of the first air duct F1 towards the lower part of the transformer body 10, thereby further improving the heat dissipation effect on the transformer body 10.

[0062] In the transformer assembly 100, a first electronic device 40 is connected between the first conductive device 20 and the second conductive device 30. Along the Y-direction (as an example of a second direction), the first electronic device 40 is arranged side-by-side with the first conductive device 20. Therefore, the first electronic device 40 may be located outside the first air duct F1 and the second air duct F2 along the Y-direction, thus failing to effectively dissipate heat. Therefore, the transformer assembly 100 may also be equipped with a fan to dissipate heat from the first electronic device 40.

[0063] As an example, Figure 5 According to some embodiments of this application, a schematic diagram of another transformer assembly is shown. (Refer to...) Figure 5The transformer assembly 100 also includes a third fan 90, which is positioned opposite the first electronic device 40 along the X-direction. The third fan 90 includes a fifth air outlet 91, which faces away from the X-direction. In other words, the airflow from the third fan 90 flows in the same direction as the airflow within the second air duct F2, thereby reducing airflow resistance and ensuring effective heat dissipation for the first electronic device 40. This ensures effective heat dissipation for all electronic devices within the transformer assembly 100, thus extending their lifespan.

[0064] In the above description of this embodiment, unless otherwise stated, " / " means "or," for example, A / B can identify A or B; the "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, B existing alone, and A and B existing simultaneously. Furthermore, in this embodiment, the values ​​of each data range include end values. For example, A = 10~50 means that A can include 10 and 50.

Claims

1. A transformer assembly, characterized in that, The transformer assembly includes: The first air duct and the second air duct extend along a first direction and are arranged sequentially along the height direction of the transformer assembly, wherein the first direction is perpendicular to the height direction; The third air duct extends along the height direction of the transformer assembly, and the first air duct and the second air duct are connected through the third air duct; A first air-cooling component is disposed opposite to the first air duct and the second air duct along the first direction. The first air-cooling component includes a cooling channel, a first air outlet and an air inlet. The first air outlet and the air inlet are connected through the cooling channel. The first air outlet is opposite to the first air duct along the first direction, and the air inlet is opposite to the second air duct along the first direction. The transformer body has a first conductive device and a second conductive device connected to it. Along the height direction, the first conductive device, the second conductive device and the transformer body are arranged in sequence. The first conductive device is arranged in the first air duct and the second conductive device is arranged in the second air duct.

2. The transformer assembly as described in claim 1, characterized in that, The first direction is the length direction of the transformer assembly.

3. The transformer assembly as described in claim 1, characterized in that, It also includes a second air-cooling component, which is disposed along the height direction on the side of the transformer body opposite to the second conductive device. The second air-cooling component includes a second air outlet, which faces the transformer body.

4. The transformer assembly as described in claim 3, characterized in that, It also includes a cooling component, which is disposed on the side opposite to the second air-cooled component and the transformer body along the height direction.

5. The transformer assembly as claimed in claim 1, characterized in that, A first fan is also provided in the first air duct, and the first fan includes a third air outlet, which faces the first direction.

6. The transformer assembly as claimed in claim 1, characterized in that, A second fan is installed inside the third air duct. Along the height direction, the position of the second fan is lower than that of the second air duct. The second fan includes a fourth air outlet, and the orientation of the fourth air outlet is opposite to that of the height direction.

7. The transformer assembly as claimed in claim 1, characterized in that, Along the height direction, a first electronic device is also connected between the first conductive device and the second conductive device. Along the second direction, the first electronic device and the first conductive device are arranged side by side. The second direction is perpendicular to the first direction and also perpendicular to the height direction. It also includes a third fan, which is disposed opposite to the first electronic device along the first direction. The third fan includes a fifth air outlet, which is oriented opposite to the first direction.

8. The transformer assembly as claimed in claim 7, characterized in that, The first electronic device is a circuit breaker.

9. The transformer assembly according to any one of claims 1 to 8, characterized in that, The first conductive device and the second conductive device are copper busbars.

10. An energy storage box, characterized in that, Includes a housing, a battery assembly, a liquid cooling assembly, and a transformer assembly according to any one of claims 1 to 9; The box has a receiving cavity; The battery assembly and the transformer assembly are arranged side by side in the receiving cavity along a third direction, which is perpendicular to the thickness direction of the housing. The liquid cooling assembly is used to provide a cold source for the first air-cooled assembly and / or the second air-cooled assembly in the transformer assembly.

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