Energy storage converter and energy storage device

Abstract

The utility model provides a kind of energy storage converter and energy storage equipment, energy storage converter includes box, electric energy conversion component and electric energy distribution component;Box is inside along its height direction and is divided into multiple layers of accommodation space;Electric energy conversion component includes multiple first devices, multiple first devices are set in at least two layers of accommodation space;Electric energy distribution component includes multiple second devices, multiple second devices are set in at least two layers of accommodation space, and part second device and first device are located in the same layer of accommodation space.The utility model distributes multiple first devices and second devices in multiple layers of accommodation space, and part co-layer is set, organically integrates electric energy conversion component and electric energy distribution component, can reduce the overall volume of equipment, adapts modularization, small-sized distributed installation mode.

Description

Technical Field

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

[0002] In electrochemical energy storage systems, the energy storage converter, as a core component, plays a crucial role in controlling battery charging and discharging and achieving AC / DC conversion. Currently, the energy storage converter and the high-voltage box are often designed separately. This layout not only results in a large space requirement and dispersed distribution of the equipment but also necessitates additional cabling for connection, significantly increasing the overall complexity of the system.

[0003] While some solutions attempt to combine the two, they only reach the level of mechanical integration. For example, embedding the high-voltage box inside the energy storage converter housing can achieve functional integration, but the equipment size is still large, and its overall size is still difficult to adapt to the modular, miniaturized, and distributed installation requirements adopted by the current mainstream electrochemical energy storage systems. Utility Model Content

[0004] The embodiments of this utility model provide an energy storage converter and energy storage device, which can improve the technical problem of large size of multifunctional energy storage converters.

[0005] In a first aspect, embodiments of this utility model provide an energy storage converter, including a housing, a power conversion component, and a power distribution component; the interior of the housing is divided into multiple accommodating spaces along its height; the power conversion component includes multiple first devices, which are disposed in at least two of the accommodating spaces, and the first devices include at least two of the following: an inverter inductor, an AC / DC power supply, a DC / DC power supply, a drive circuit board, a power circuit board, a control circuit board, a communication circuit board, an AC filter board, and a DC filter board; the power distribution component includes multiple second devices, which are disposed in at least two of the accommodating spaces, and some of the second devices are located in the same accommodating space as the first devices, and the second devices include at least two of the following: a disconnecting switch, a DC-side fuse, a pre-charge resistor, and a pre-charge relay.

[0006] In some examples, by layering the components of the power conversion and distribution modules, with some second components located on the same layer as the first, the overall size of the energy storage converter is significantly reduced, making it better suited for modular, miniaturized, and distributed installations. Simultaneously, the integrated design reduces the use of additional cabling, lowers system complexity, and improves system stability and reliability. Furthermore, the layered layout facilitates heat dissipation and maintenance of each component, further optimizing the performance of the energy storage converter.

[0007] In one embodiment, the accommodating space includes an upper accommodating space, a middle accommodating space, and a lower accommodating space. The lower accommodating space is used to install at least one of an inverter inductor, an AC / DC power supply, a DC / DC power supply, a disconnecting switch, a DC-side fuse, a pre-charge resistor, and a pre-charge relay. At least one of the inverter inductor, the disconnecting switch, and the DC-side fuse extends into the middle accommodating space. The middle accommodating space is used to install at least one of a drive circuit board and a power circuit board. The upper accommodating space is used to install at least one of a control circuit board, a communication circuit board, an AC filter board, and a DC filter board.

[0008] In some examples, by distributing components with different functions into upper, middle, and lower layers, and extending some components into the middle layer, the space in the height direction of the enclosure can be fully utilized, further reducing the overall size. The lower layer carries high-power or main circuit components, the middle layer houses drive and power-related circuit boards, and the upper layer contains control and communication components. This shortens signal transmission paths, reduces signal attenuation and interference, and improves system stability. The design of extending some components into the middle layer can accommodate the installation requirements of components of different sizes, improving space utilization and making the energy storage converter more suitable for modular and miniaturized installation requirements.

[0009] In one embodiment, the energy storage converter further includes a plurality of communication interfaces disposed in the housing, the communication interfaces being used to connect to a communication circuit board.

[0010] In some cases, connecting to multiple external devices via multiple communication interfaces can broaden the information exchange range of the energy storage converter and enable battery management system functions. The cooperation between the communication interfaces and the communication circuit board ensures stable and reliable signal transmission between external devices and the energy storage converter, improving the accuracy and efficiency of battery management, and ultimately optimizing the overall performance of the energy storage system.

[0011] In one embodiment, the energy storage converter further includes a cable, a terminal block, and a lug. Two first devices, two second devices, or one first device and one second device are connected via the cable. One end of the lug is connected to the cable, and the other end of the lug is connected to the terminal block. The terminal block is correspondingly disposed on the first device or the second device.

[0012] In some cases, the use of lugs, terminal blocks, and cables to connect devices improves connection stability and security, reducing contact problems caused by loose connections. The lug-and-terminal connection method facilitates installation and removal, reducing maintenance difficulty. This connection structure makes wiring between different devices more standardized, reduces cable tangling, promotes efficient use of internal space, reduces the risk of signal interference or power transmission loss, and improves the overall performance of the energy storage converter.

[0013] In one embodiment, two connected first devices, two connected second devices, or one connected first device and one second device are arranged adjacent to each other.

[0014] In some cases, by placing connected devices adjacent to each other, the length of connecting cables is shortened, reducing cable usage and lowering system material costs. Shorter cable paths reduce the likelihood of signal interference, improve signal transmission accuracy, and ensure the stability of collaborative operation between the various components of the energy storage converter. Adjacent placement also allows for a more compact internal layout of the enclosure, further reducing the overall size and adapting to modular and miniaturized installation requirements, while facilitating inspection and maintenance of the connections by staff.

[0015] In one embodiment, the first device includes a DC connector, and the second device includes a disconnect switch, wherein the DC connector is disposed adjacent to the disconnect switch.

[0016] In some cases, by placing the DC connector and the disconnect switch next to each other, the length of the connecting cable between them is shortened, reducing the amount of cable used and lowering costs.

[0017] In one embodiment, the energy storage converter further includes a heat dissipation assembly installed in the housing, the heat dissipation assembly being used to dissipate heat from the power conversion assembly and the power distribution assembly.

[0018] In some cases, heat dissipation components effectively cool the power conversion and distribution components, controlling the operating temperature of each device and ensuring they operate within suitable temperature ranges, thus maintaining the stable performance of the energy storage converter. A stable temperature environment extends device lifespan, reduces the probability of failure, and improves the reliability of the energy storage converter. Simultaneously, good heat dissipation allows the energy storage converter to operate continuously at higher power, improving its operating efficiency and better meeting the operational requirements of electrochemical energy storage systems.

[0019] In one embodiment, the heat dissipation assembly includes a heat sink and a cooling fan, wherein the heat sink and the cooling fan are located in the same layer of the accommodating space or in different layers of the accommodating space.

[0020] In some cases, by flexibly distributing heat sinks and cooling fans within the same or different storage layers, the heat dissipation layout can be optimized based on the heat generation of components within each layer. For areas with concentrated heat generation, placing both on the same layer enhances localized heat dissipation; for areas with more dispersed heat distribution, placing them on different layers utilizes airflow circulation to achieve overall heat dissipation. This flexible layout improves the adaptability of the heat dissipation components to different heat generation scenarios, ensuring that the power conversion and distribution components receive effective heat dissipation under various operating conditions, maintaining the stable operation of the energy storage converter.

[0021] In one embodiment, the first device includes a driving circuit board and an insulated gate bipolar transistor (IGBT), the IGBT being soldered to the driving circuit board, and the driving circuit board being connected to the heat sink.

[0022] In some examples, by soldering the insulated-gate bipolar transistor (IGBT) to the driver circuit board and connecting the driver circuit board to the heat sink, an efficient heat dissipation path is formed. This quickly dissipates the heat generated by the IGBT during operation, reducing performance degradation or damage due to overheating. This structural design reduces the use of heat dissipation components, making the layout of the first device more compact, saving space within the enclosure, and improving the overall heat dissipation efficiency and operational reliability of the energy storage converter.

[0023] In one embodiment, the housing has heat dissipation holes on the side directly opposite to the air inlet and / or air outlet side of the cooling fan.

[0024] In some cases, by creating ventilation holes on the side of the enclosure directly opposite the air intake and / or exhaust side of the cooling fan, the air exchange efficiency between the inside and outside of the enclosure can be optimized. This allows more cool air to enter the enclosure and carry away heat promptly, improving the heat dissipation capacity of the cooling components. Properly positioned ventilation holes can reduce airflow resistance, lower the workload of the cooling fan, and prevent heat buildup inside the enclosure. This ensures that the power conversion and distribution components are always at a suitable operating temperature, further guaranteeing the stable operation of the energy storage converter.

[0025] In one embodiment, the heat dissipation assembly includes a plurality of cooling fans disposed in at least two layers of the accommodating space.

[0026] In some examples, by placing multiple cooling fans in at least two layers of enclosure space, the heat dissipation capacity can be flexibly allocated according to the heat generation power and density of the devices in each layer. Layers with high heat generation can accommodate more or more powerful cooling fans, while layers with low heat generation can have fewer, ensuring precise utilization of heat dissipation resources. This layered heat dissipation method avoids the problem of insufficient localized heat dissipation that may occur with single-fan cooling, improves overall heat dissipation efficiency, ensures that devices in each layer operate at suitable temperatures, and further enhances the stability and reliability of the energy storage converter.

[0027] In one embodiment, the plurality of cooling fans are oriented in at least two directions to dissipate heat from the power conversion component and the power distribution component from more than two directions.

[0028] In some cases, by having multiple cooling fans with at least two orientations to dissipate heat from two or more directions onto the power conversion and distribution components, potential heat dissipation blind spots that may exist with unidirectional heat dissipation can be eliminated, ensuring that components in different locations inside the enclosure receive effective cooling. Multidirectional airflow can more quickly remove heat from different areas, preventing localized overheating, improving overall heat dissipation efficiency, ensuring the stability of the energy storage converter during high-power operation, and extending the lifespan of the components.

[0029] In one embodiment, the energy storage converter further includes a DC power supply disposed in the housing, the DC power supply being used to supply power to the first device and / or the second device.

[0030] In some cases, by installing a DC power supply within the enclosure to power the first and / or second devices, reliance on an external UPS can be eliminated, saving on UPS-related equipment costs and installation space. Integrating the DC power supply and energy storage converter into the same enclosure reduces the number of cables and interfaces for external power connections, lowers system wiring complexity, avoids the impact of potential external power outages, enhances the independence and reliability of the energy storage converter's power supply, and ensures continuous and stable operation of all devices.

[0031] Secondly, embodiments of this utility model provide an energy storage device, including the energy storage converter as described above. This energy storage device incorporates all the beneficial effects of the aforementioned energy storage converter, which will not be elaborated upon here.

[0032] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

[0033] The beneficial effects of the embodiments of this utility model are as follows:

[0034] In embodiments of this invention, by distributing multiple first and second devices across multiple layers of accommodating space, with some components sharing a single layer, the overall size of the device can be significantly reduced, adapting to modular and miniaturized distributed installation methods. Simultaneously, the use of additional connecting cables is reduced, lowering system complexity. The multi-layered layout also improves space utilization, making the internal structure of the enclosure more compact, solving the problems of large size and space occupation in traditional designs, and better meeting the installation requirements of mainstream electrochemical energy storage systems. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the internal structure of the energy storage converter provided in an embodiment of this utility model;

[0037] Figure 2 This is a three-dimensional schematic diagram of the internal bottom accommodating space of the energy storage device provided in an embodiment of this utility model;

[0038] Figure 3 yes Figure 2 A schematic diagram of the internal top-level enclosure space of the provided energy storage device;

[0039] Figure 4 yes Figure 2 A first-person perspective 3D schematic diagram of the provided energy storage device;

[0040] Figure 5 yes Figure 2 A second-view stereoscopic diagram of the provided energy storage device.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Cabinet; 11. Storage space; 111. Upper storage space; 112. Middle storage space; 113. Lower storage space; 12. Ventilation holes;

[0043] 2. Power conversion components; 21. First device; 211. Inverter inductor; 212. AC / DC power supply; 213. DC / DC power supply; 214. Driver circuit board; 2141. Insulated gate bipolar transistor; 215. Power circuit board; 216. Control circuit board; 217. Communication circuit board; 218. AC filter board; 219. DC filter board;

[0044] 3. Power distribution components; 31. Secondary device; 311. Disconnecting switch; 312. DC side fuse; 313. Precharge resistor; 314. Precharge relay;

[0045] 4. Communication interface;

[0046] 5. Cables;

[0047] 6. Thread nose;

[0048] 7. Terminal block;

[0049] 8. Heat dissipation components; 81. Radiator; 82. Cooling fan. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0051] According to the first aspect of this application, see Figures 1 to 3 A power storage converter is provided, comprising a housing 1, a power conversion component 2, and a power distribution component 3. The housing 1 is divided into multiple accommodating spaces 11 along its height. The power conversion component 2 includes a plurality of first devices 21, which are disposed in at least two accommodating spaces 11. The first devices 21 include at least two of the following: inverter inductor 211, AC / DC power supply 212, DC / DC power supply 213, drive circuit board 214, power circuit board 215, control circuit board 216, communication circuit board 217, AC filter board 218, and DC filter board 219. The power distribution component 3 includes a plurality of second devices 31, which are disposed in at least two accommodating spaces 11, and some of the second devices 31 are located in the same accommodating space 11 as the first devices 21. The second devices 31 include at least two of the following: disconnect switch 311, DC-side fuse 312, pre-charge resistor 313, and pre-charge relay 314.

[0052] It is understandable that the energy storage converter in this embodiment achieves a layered layout of the power conversion component 2 and the power distribution component 3 by dividing the interior of the housing 1 into multiple layers of accommodating spaces 11 along the height direction. Multiple first devices 21 of the power conversion component 2, such as inverter inductors 211 and AC / DC power supplies 212, are housed in at least two layers of accommodating spaces 11. Meanwhile, multiple second devices 31 of the power distribution component 3, such as disconnect switches 311 and DC-side fuses 312, are not only distributed in at least two layers of accommodating spaces 11 but also share the same layer with some of the first devices 21. This design breaks away from the traditional separate or purely mechanically integrated layout pattern, achieving an organic integration of the two in terms of space utilization. It allows devices with different functions to be rationally distributed according to operational requirements and spatial characteristics, ensuring the normal operation of each device while making the overall structure more compact.

[0053] In some examples, by layering the components of the power conversion assembly 2 and the power distribution assembly 3, with some of the second components 31 located on the same layer as the first component 21, the overall size of the energy storage converter is significantly reduced, making it better suited for modular, miniaturized, and distributed installation requirements. Simultaneously, the integrated design reduces the use of additional cables 5, lowers system complexity, and improves system stability and reliability. Furthermore, the layered layout facilitates heat dissipation and maintenance of each component, further optimizing the performance of the energy storage converter.

[0054] See Figures 1 to 3 In some embodiments, the accommodating space 11 includes an upper accommodating space 111, a middle accommodating space 112, and a lower accommodating space 113. The lower accommodating space 113 is used to install at least one of the following: an inverter inductor 211, an AC / DC power supply 212, a DC / DC power supply 213, a disconnecting switch 311, a DC-side fuse 312, a pre-charge resistor 313, and a pre-charge relay 314. At least one of the inverter inductor 211, the disconnecting switch 311, and the DC-side fuse 312 extends into the middle accommodating space 112. The middle accommodating space 112 is used to install at least one of the following: a drive circuit board 214 and a power circuit board 215. The upper accommodating space 111 is used to install at least one of the following: a control circuit board 216, a communication circuit board 217, an AC filter board 218, and a DC filter board 219.

[0055] It is understood that in this embodiment, the accommodating space 11 includes an upper accommodating space 111, a middle accommodating space 112, and a lower accommodating space 113. The lower accommodating space 113 can accommodate at least one of the following: inverter inductor 211, AC / DC power supply 212, DC / DC power supply 213, disconnector switch 311, DC-side fuse 312, pre-charge resistor 313, and pre-charge relay 314. These devices are mostly high-power components or need to carry the main circuit current; the lower location provides a stable mounting foundation for them. At least one of the inverter inductor 211, disconnector switch 311, and DC-side fuse 312 extends into the middle accommodating space 112. This design allows for flexible use of space according to device size, avoiding overcrowding of devices within a single accommodating space 11. The middle layer accommodating space 112 is used to install at least one of the drive circuit board 214 and the power circuit board 215. The drive circuit board 214 can drive the power devices in the lower or middle layer at close range, while the power circuit board 215 can cooperate with the power supply devices in the lower layer to realize power conversion. The upper layer accommodating space 111 is used to install at least one of the control circuit board 216, the communication circuit board 217, the AC filter board 218, and the DC filter board 219. These circuit boards have control, communication, or filtering functions. Being located in the upper layer can reduce interference from the high-power devices in the lower layer and facilitate signal interaction with the outside.

[0056] In some examples, by distributing devices with different functions into upper-layer accommodating space 111, middle-layer accommodating space 112, and lower-layer accommodating space 113, and extending some devices into the middle-layer accommodating space 112, the space in the height direction of the enclosure 1 can be fully utilized, further reducing the overall volume. The lower layer carries high-power or main circuit devices, the middle layer houses drive and power-related circuit boards, and the upper layer houses control and communication components. This shortens the signal transmission path, reduces signal attenuation and interference, and improves system stability. The design of extending some devices into the middle layer can accommodate the installation requirements of devices of different sizes, improving space utilization and making the energy storage converter more compatible with modular and miniaturized installation requirements.

[0057] See Figure 3 In some embodiments, the energy storage converter also includes multiple communication interfaces 4 disposed in the housing 1, which are used to connect to the communication circuit board 217.

[0058] Understandably, the energy storage converter includes multiple communication interfaces 4 located in the housing 1, and these communication interfaces 4 are connected to the communication circuit board 217. As a channel for connecting to the outside world, the communication interfaces 4 can establish connections with multiple external devices. With the help of the signal processing and transmission capabilities of the communication circuit board 217, functions related to the battery management system can be implemented, such as acquiring battery status information and sending control commands.

[0059] In some cases, connecting to multiple external devices via multiple communication interfaces 4 can broaden the information exchange range of the energy storage converter and realize the relevant functions of the battery management system. The cooperation between communication interface 4 and communication circuit board 217 ensures stable and reliable signal transmission between external devices and the energy storage converter, improves the accuracy and efficiency of battery management, and thus optimizes the overall operating performance of the energy storage system.

[0060] See Figure 3 In some embodiments, the energy storage converter further includes a cable 5, a terminal block 7, and a wire lug 6. Two first devices 21, two second devices 31, or one first device 21 and one second device 31 are connected by the cable 5. One end of the wire lug 6 is connected to the cable 5, and the other end of the wire lug 6 is connected to the terminal block 7. The terminal block 7 is correspondingly disposed on the first device 21 or the second device 31.

[0061] Understandably, the energy storage converter includes cables 5, terminals 7, and lugs 6. These components are used to achieve connections between first devices 21, between second devices 31, and between first devices 21 and second devices 31. One end of the lug 6 is crimped or soldered to the cable 5, and the other end is soldered to the terminal 7 or connected by fasteners. The terminal 7 is correspondingly mounted on the first device 21 or the second device 31. The lug 6 enhances the conductivity and robustness of the cable 5 end, the terminal 7 provides a stable interface for the connection, and the cable 5 undertakes the task of transmitting electrical energy or signals. The cooperation of these three components makes the connection between different devices more reliable, meeting the requirements for conductivity and mechanical strength in circuit connections.

[0062] In some examples, the inverter inductor 211 and the driver circuit board 214 are connected via cable 5, terminal block 7, and lug 6. One end of the lug 6 is connected to cable 5, and the other end is connected to the terminal block 7 corresponding to the inverter inductor 211 or the driver circuit board 214, forming a complete conductive path. The electrical signals or energy generated by the inverter inductor 211 during the power conversion process can be transmitted to the driver circuit board 214 through cable 5, and the control signals output by the driver circuit board 214 can also be transmitted to components related to the inverter inductor 211 through this connection path. The lug 6 enhances the structural strength and conductivity of the cable 5 end, while the terminal block 7 provides a stable interface for the connection, ensuring stable and reliable power or signal transmission between the inverter inductor 211 and the driver circuit board 214.

[0063] In some cases, the connection between devices is achieved through the cooperation of the lug 6, terminal block 7, and cable 5, which improves the stability and safety of the connection and reduces contact problems caused by loose connections. The connection method between the lug 6 and the terminal block 7 facilitates installation and disassembly, reducing maintenance difficulty. This connection structure makes the wiring between different devices more standardized, reduces cable tangling, and promotes the rational use of the internal space of the enclosure 1. At the same time, it reduces the risk of signal interference or power transmission loss, and improves the overall performance of the energy storage converter.

[0064] See Figure 3 In some embodiments, two connected first devices 21, two connected second devices 31, or one connected first device 21 and one connected second device 31 are arranged adjacent to each other.

[0065] It is understandable that two connected first devices 21, two connected second devices 31, or one connected first device 21 and one connected second device 31 are arranged adjacently, so that the connected devices are close in space, which shortens the length of the cable 5 used to connect them and reduces the laying distance of the cable 5 inside the housing 1. The adjacent arrangement shortens the transmission path in the circuit connection, reduces signal attenuation or power loss during transmission, and facilitates the organization and fixation of the cable 5.

[0066] In some examples, the disconnector switch 311 and the DC-side fuse 312 are arranged side-by-side on the bottom layer of the enclosure 1. The enclosure 1 also has a DC connector for connecting to the DC / DC power supply 213, which is located on the bottom layer of the enclosure 1, near the side where the DC connector is located. This arrangement shortens the length of the connecting cable 5 between the two devices, reduces power loss during transmission, and minimizes the space occupied by the cable 5, resulting in a more compact internal layout of the enclosure 1.

[0067] In some cases, by placing connected devices adjacent to each other, the length of the connecting cable 5 is shortened, reducing the amount of cable 5 used and lowering the system's material costs. Shorter cable paths reduce the likelihood of signal interference, improve signal transmission accuracy, and ensure the stability of collaborative operation between the various components of the energy storage converter. Adjacent placement also allows for a more compact layout within the enclosure 1, further reducing the overall size and adapting to modular and miniaturized installation requirements, while facilitating inspection and maintenance of the connections by staff.

[0068] In one embodiment, see Figure 3 The first device 21 includes a DC connector, and the second device 31 includes a disconnect switch 311. The DC connector and the disconnect switch 311 are arranged adjacent to each other.

[0069] In some cases, the DC connector is located on one side of the housing 1, and the isolating switch 311 is located close to the DC connector, which shortens the length of the connecting cable 5 between the two, reduces the amount of cable 5 used, and lowers the cost.

[0070] See Figure 2 In some embodiments, the energy storage converter further includes a heat dissipation assembly 8 installed in the housing 1, which is used to dissipate heat from the power conversion assembly 2 and the power distribution assembly 3.

[0071] Understandably, the energy storage converter includes a heat dissipation assembly 8 installed in the enclosure 1. This heat dissipation assembly 8 is specifically designed to dissipate heat from the power conversion assembly 2 and the power distribution assembly 3. The first components 21 in the power conversion assembly 2, such as the inverter inductor 211 and the AC / DC power supply 212, generate heat during operation due to power conversion. Similarly, the second components 31 in the power distribution assembly 3, such as the disconnect switch 311 and the DC-side fuse 312, also generate heat when switching current or carrying current. The heat dissipation assembly 8 dissipates the heat generated by these components through conduction, convection, or radiation, preventing the components from being damaged or affected by excessive temperature, and ensuring that the internal temperature of the enclosure 1 meets the requirements for the operation of the electronic equipment.

[0072] In some examples, the heat dissipation component 8 effectively cools the power conversion component 2 and the power distribution component 3, thereby controlling the operating temperature of each device and ensuring that they operate within a suitable temperature range, maintaining the stable performance of the energy storage converter. A stable temperature environment can extend the lifespan of the devices, reduce the probability of failure, and improve the reliability of the energy storage converter. Simultaneously, good heat dissipation allows the energy storage converter to operate continuously at higher power, improving its operating efficiency and better meeting the operational requirements of electrochemical energy storage systems.

[0073] See Figure 2 In some embodiments, the heat dissipation assembly 8 includes a heat sink 81 and a cooling fan 82, which are located in the same layer of accommodating space 11 or in different layers of accommodating space 11.

[0074] Understandably, the heat dissipation assembly 8 consists of a heat sink 81 and a cooling fan 82. The positions of the heat sink 81 and the cooling fan 82 are flexible; they can be located in the same layer of the accommodating space 11 or in different layers. The heat sink 81 conducts heat to itself by directly contacting or being close to the heat-generating first device 21 and second device 31. The airflow generated by the cooling fan 82 accelerates the airflow on the surface of the heat sink 81, using the principle of convection heat transfer to remove heat and achieve a heat dissipation effect. When both are located in the same layer, they can form localized enhanced heat dissipation for the heat-generating devices concentrated in that layer; when they are in different layers, they can dissipate heat from the devices in the multi-layer accommodating space 11 through airflow circulation.

[0075] In some examples, by flexibly distributing the heat sink 81 and cooling fan 82 within the same or different layers of the accommodating space 11, the heat dissipation layout can be optimized based on the heat generation of the devices within each layer of the accommodating space 11. For areas with concentrated heat generation, placing both on the same layer enhances local heat dissipation; for areas with more dispersed heat distribution, placing them on different layers allows for overall heat dissipation through airflow circulation. This flexible layout improves the adaptability of the heat dissipation component 8 to different heat generation scenarios, ensuring that the power conversion component 2 and the power distribution component 3 can achieve effective heat dissipation under various operating conditions, maintaining the stable operation of the energy storage converter.

[0076] See Figure 1 In some embodiments, the first device 21 includes a driving circuit board 214 and an insulated gate bipolar transistor 2141, the insulated gate bipolar transistor 2141 being soldered to the driving circuit board 214, and the driving circuit board 214 being connected to the heat sink 81.

[0077] Understandably, the first device 21 includes a driver circuit board 214 and an insulated-gate bipolar transistor (IGBT) 2141. The IGBT 2141 is soldered onto the driver circuit board 214, which is connected to the heat sink 81. As a power switching device, the IGBT 2141 generates a significant amount of heat during operation. Soldering it to the driver circuit board 214 ensures stable electrical connections and facilitates heat conduction from the IGBT 2141 to the driver circuit board 214. After the driver circuit board 214 is connected to the heat sink 81, it can transfer the heat it absorbs to the heat sink 81, which then dissipates the heat using its large surface area, thereby controlling the temperature of the IGBT 2141 within a reasonable range.

[0078] In some examples, by soldering the insulated-gate bipolar transistor 2141 to the drive circuit board 214 and connecting the drive circuit board 214 to the heat sink 81, an efficient heat dissipation path is formed, which can quickly dissipate the heat generated by the insulated-gate bipolar transistor 2141 during operation, reducing its performance degradation or damage due to overheating. This structural design reduces the use of heat dissipation components, making the layout of the first device 21 more compact, saving the storage space 11 within the housing 1, while improving the overall heat dissipation efficiency and operational reliability of the energy storage converter.

[0079] See Figure 4 and Figure 5 In some embodiments, the housing 1 has a heat dissipation hole 12 on the side directly opposite to the air inlet and / or air outlet side of the cooling fan 82.

[0080] It is understandable that the enclosure 1 has ventilation holes 12 on the side directly opposite the air inlet side of the cooling fan 82, the side directly opposite the air outlet side of the cooling fan 82, or both sides. The ventilation holes 12 are designed to provide channels for airflow. When the cooling fan 82 is working, cooler external air can enter the enclosure 1 through the ventilation holes 12 on the air inlet side. After flowing through the heat sink 81 and the heat-generating components, the air carrying heat can be discharged from the enclosure 1 through the ventilation holes 12 on the air outlet side, forming a complete air circulation path and enhancing the heat dissipation effect by utilizing the principle of forced convection.

[0081] In some examples, by opening ventilation holes 12 on the side of the enclosure 1 directly opposite the air inlet and / or outlet side of the cooling fan 82, the air exchange efficiency inside and outside the enclosure 1 can be optimized, allowing more cool air to enter the enclosure 1 and promptly remove heat, thereby improving the heat dissipation capacity of the heat dissipation component 8. A properly positioned ventilation hole 12 can reduce airflow resistance, lower the workload of the cooling fan 82, and prevent heat accumulation inside the enclosure 1, ensuring that the power conversion component 2 and power distribution component 3 are always at a suitable operating temperature, further guaranteeing the stable operation of the energy storage converter.

[0082] See Figure 3 and Figure 5 In some embodiments, the heat dissipation assembly 8 includes a plurality of cooling fans 82 disposed in at least two accommodating spaces 11.

[0083] Understandably, the heat dissipation assembly 8 includes multiple cooling fans 82, which are disposed in at least two layers of accommodating spaces 11. Both the first device 21 and the second device 31 within different layers of accommodating spaces 11 generate heat during operation. Distributing the multiple cooling fans 82 across at least two layers of accommodating spaces 11 ensures that each heat-generating device in each layer receives airflow from the cooling fans 82. The cooling fans 82 drive airflow, accelerating the transfer of heat from the device surface or heat sink 81 to the surrounding environment, achieving layered heat dissipation tailored to the heat generation of different layers, and ensuring that the heat from each layer of devices is effectively removed.

[0084] In some examples, by placing multiple cooling fans 82 in at least two layers of housing space 11, the heat dissipation capacity can be flexibly allocated according to the heat generation power and density of the devices in each layer of housing space 11. Layers with high heat generation can accommodate more or more powerful cooling fans 82, while layers with low heat generation can have fewer, ensuring precise utilization of heat dissipation resources. This layered heat dissipation method avoids the problem of insufficient localized heat dissipation that may occur with single-fan cooling, improves overall heat dissipation efficiency, ensures that devices in each layer operate at suitable temperatures, and further enhances the stability and reliability of the energy storage converter.

[0085] See Figure 3 and Figure 5In some embodiments, the plurality of cooling fans 82 are oriented in at least two directions to dissipate heat from the power conversion component 2 and the power distribution component 3 from more than two directions.

[0086] Understandably, the heat dissipation assembly 8 includes multiple cooling fans 82 with at least two orientations. These cooling fans 82 with different orientations can dissipate heat from the power conversion assembly 2 and the power distribution assembly 3 from more than two directions. The cooling fans 82 with different orientations can form multi-directional airflow. Some cooling fans 82 can draw in cool air from the side of the housing 1, some may exhaust hot air from the front or top, and others may form horizontal or vertical airflow circulation within the housing 1. Multi-directional airflow can cover more heat-generating areas, ensuring that all parts of the power conversion assembly 2 and the power distribution assembly 3 can come into contact with flowing air, accelerating heat dissipation.

[0087] In some examples, by having multiple cooling fans 82 with at least two orientations to dissipate heat from two or more directions onto the power conversion component 2 and the power distribution component 3, potential heat dissipation blind spots that may exist with unidirectional heat dissipation can be eliminated, ensuring that components in different locations inside the enclosure 1 can be effectively cooled. Multidirectional airflow can more quickly remove heat from different areas, preventing localized overheating, improving overall heat dissipation efficiency, ensuring the stability of the energy storage converter during high-power operation, and extending the service life of the components.

[0088] In some examples, the enclosure 1 is equipped with three sets of cooling fans 82, namely the first fan group, the second fan group, and the third fan group. The first fan group, the second fan group, and the third fan group are equipped with five 9238 axial fans, two 6025 axial fans, and one 9238 axial fan, respectively. The first fan group and the second fan group face the back of the enclosure 1, and the third fan group faces the side of the enclosure 1. The first fan group is located in the bottom and middle layer accommodating spaces 112 of the enclosure 1, and the second and third fan groups are located in the top layer accommodating space 11. By setting up three sets of cooling fans 82 with different specifications, numbers, and positions, the first fan group forms a strong heat dissipation capacity in the bottom and middle layers, which, together with the heat sink 81, dissipates heat from high-power devices. The second and third fan groups work together in the top layer, especially the third fan group facing the side, which can accelerate the air exchange between the top layer and the outside. The coordinated operation of multiple fans covers the storage space 11 of each layer of the enclosure 1, improving the overall heat dissipation efficiency and preventing the performance of components on different layers from being affected by heat accumulation. At the same time, the selection of fans of different specifications achieves a balance between heat dissipation capacity and energy consumption, enhancing the stability of the energy storage converter operation.

[0089] In some embodiments, the energy storage converter further includes a DC power supply disposed in the housing 1, which is used to supply power to the first device 21 and / or the second device 31.

[0090] Understandably, the energy storage converter includes a DC power supply housed in the enclosure 1. The function of this DC power supply is to power the first device 21 and / or the second device 31. The first device 21, such as the drive circuit board 214 or the control circuit board 216, and the second device 31, such as the pre-charge relay 314, both require DC power to operate. The DC power supply converts the input electrical energy into DC voltage and current that meet the operating requirements of these devices through internal circuitry, directly providing them with power. By using a built-in DC power supply, there is no need to rely on an external uninterruptible power supply (UPS). Powering the internal devices through its own structure conforms to the basic logic of power supply in a circuit system.

[0091] In some cases, by providing a DC power supply to the first device 21 and / or the second device 31 within the enclosure 1, reliance on an external UPS can be eliminated, saving on UPS-related equipment costs and installation space. Integrating the DC power supply and the energy storage converter into the same enclosure 1 reduces the number of cables 5 and interfaces for external power connections, lowers system wiring complexity, avoids the potential impact of external power interruptions, enhances the independence and reliability of the energy storage converter's power supply, and ensures continuous and stable operation of all devices.

[0092] According to a second aspect of this application, an energy storage device is provided, comprising the energy storage converter as described above. This energy storage device incorporates all the beneficial effects of the aforementioned energy storage converter, which will not be elaborated further herein.

[0093] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An energy storage converter, characterized in that, include: The box (1) is divided into multiple storage spaces (11) along its height direction; The power conversion component (2) includes a plurality of first devices (21), which are disposed in at least two layers of the accommodating space (11). The first devices (21) include at least two of the following: inverter inductor (211), AC / DC power supply (212), DC / DC power supply (213), drive circuit board (214), power circuit board (215), control circuit board (216), communication circuit board (217), AC filter board (218), and DC filter board (219). The power distribution component (3) includes a plurality of second devices (31), which are disposed in at least two layers of the accommodating space (11), and some of the second devices (31) are located in the same layer of the accommodating space (11) as the first device (21). The second devices (31) include at least two of the following: disconnecting switch (311), DC-side fuse (312), pre-charge resistor (313), and pre-charge relay (314).

2. The energy storage converter according to claim 1, characterized in that, The accommodating space (11) includes an upper accommodating space (111), a middle accommodating space (112), and a lower accommodating space (113). The lower accommodating space (113) is used to install at least one of the following: inverter inductor (211), AC / DC power supply (212), DC / DC power supply (213), disconnector switch (311), DC-side fuse (312), pre-charge resistor (313), and pre-charge relay (314); At least one of the inverter inductor (211), the disconnecting switch (311), and the DC-side fuse (312) extends into the middle layer accommodating space (112); The middle layer accommodating space (112) is used to install at least one of the driver circuit board (214) and the power circuit board (215). The upper accommodating space (111) is used to install at least one of the control circuit board (216), communication circuit board (217), AC filter board (218), and DC filter board (219).

3. The energy storage converter according to claim 1, characterized in that, The energy storage converter also includes multiple communication interfaces (4) disposed in the housing (1), which are used to connect to the communication circuit board (217).

4. The energy storage converter according to any one of claims 1-3, characterized in that, The energy storage converter also includes a cable (5), a terminal block (7), and a lug (6). Two first devices (21), two second devices (31), or one first device (21) and one second device (31) are connected by the cable (5). One end of the lug (6) is connected to the cable (5), and the other end of the lug (6) is connected to the terminal block (7). The terminal block (7) is correspondingly disposed on the first device (21) or the second device (31).

5. The energy storage converter according to claim 4, characterized in that, Two connected first devices (21), two connected second devices (31), or one connected first device (21) and one connected second device (31) are arranged adjacent to each other.

6. The energy storage converter according to any one of claims 1-3, characterized in that, The first device (21) includes a DC connector, and the second device (31) includes a disconnect switch (311), wherein the DC connector is disposed adjacent to the disconnect switch (311).

7. The energy storage converter according to any one of claims 1-3, characterized in that, The energy storage converter also includes a heat dissipation component (8) installed in the housing (1), which is used to dissipate heat from the power conversion component (2) and the power distribution component (3).

8. The energy storage converter according to claim 7, characterized in that, The heat dissipation assembly (8) includes a heat sink (81) and a cooling fan (82), wherein the heat sink (81) and the cooling fan (82) are located in the same layer of the accommodating space (11) or in different layers of the accommodating space (11).

9. The energy storage converter according to claim 8, characterized in that, The first device (21) includes a driving circuit board (214) and an insulated gate bipolar transistor (2141), the insulated gate bipolar transistor (2141) being soldered to the driving circuit board (214), the driving circuit board (214) being connected to the heat sink (81).

10. The energy storage converter according to claim 8, characterized in that, The housing (1) has a heat dissipation hole (12) on the side directly opposite to the air inlet side and / or air outlet side of the cooling fan (82).

11. The energy storage converter according to claim 7, characterized in that, The heat dissipation assembly (8) includes a plurality of cooling fans (82), which are disposed in at least two layers of the accommodating space (11).

12. The energy storage converter according to claim 11, characterized in that, The plurality of cooling fans (82) are oriented in at least two directions to dissipate heat from the power conversion component (2) and the power distribution component (3) from more than two directions.

13. The energy storage converter according to any one of claims 1-3, characterized in that, The energy storage converter also includes a DC power supply disposed in the housing (1), which is used to supply power to the first device (21) and / or the second device (31).

14. An energy storage device, characterized in that, Includes the energy storage converter as described in any one of claims 1-13.

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