Busbar device, energy storage cabinet and electrical system

Abstract

The embodiment of the application provides a current collecting device, an energy storage cabinet and an electrical system, relates to the technical field of electrical equipment, and the current collecting device comprises: at least two current collecting components which are stacked, the current collecting component has an input connection end and an output connection end, the input connection end is used for receiving electric energy, and the output connection end is used for outputting collected electric energy, so that the current collecting component can be stacked in a certain direction according to actual conditions, the space occupied by the current collecting device in the direction is reduced, and therefore, the space can be reasonably utilized.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and in particular to a combiner device, energy storage cabinet and electrical system. Background Technology

[0002] A busbar module is used to combine the current from multiple input power sources and then output it to the client. In an electrical system, it plays a role in integrating, protecting, and managing current.

[0003] In related technologies, multiple combiner modules are installed in the electrical compartment of the energy storage cabinet. These multiple combiner modules are generally arranged sequentially along a certain direction of the electrical compartment in the same plane, such as the width direction. In order to accommodate the arrangement of the combiner modules, the electrical compartment needs to occupy a large space in this direction, which is not conducive to the rational use of space. Summary of the Invention

[0004] This application provides a combiner device, an energy storage cabinet, and an electrical system to enable the combiner device to make reasonable use of the installation space.

[0005] In a first aspect, embodiments of this application provide a combiner device, including:

[0006] At least two bus components, wherein the at least two bus components are stacked;

[0007] The busbar assembly has an input connection terminal and an output connection terminal. The busbar assembly receives electrical energy through the input connection terminal and outputs the collected electrical energy through the output connection terminal.

[0008] In one possible implementation, the at least two busbar components are stacked along a first direction, and the projected portions of the at least two busbar components in the first direction overlap.

[0009] In one possible implementation, the bus assembly includes an input component and an output component, one end of the input component forming the input connection terminal, and one end of the output component forming the output connection terminal;

[0010] The projections of the input components of the at least two busbar components in the first direction are staggered, and the projections of the output components of the at least two busbar components in the first direction at least partially overlap.

[0011] In one possible implementation, a first gap exists between two adjacent output components.

[0012] In one possible implementation, a first insulating element is also included, which is located within the first gap.

[0013] In one possible implementation, the first insulating element is connected to at least one of the two output components adjacent to the first insulating element.

[0014] In one possible implementation, the bus component further includes:

[0015] A disconnecting switch that connects the input component and the output component.

[0016] In one possible implementation, it also includes:

[0017] The box body has an internal cavity, and the box body is provided with an input connection port that communicates with the cavity;

[0018] The busbar assembly is located inside the receiving cavity, the input connection terminal is connected to the input power supply via the input connection port, and the output connection terminal is located outside the receiving cavity.

[0019] In one possible implementation, it also includes:

[0020] A connector for connecting the input terminal and the input power supply via the input port.

[0021] In one possible implementation, the operating mechanism of the disconnecting switch is located outside the receiving cavity.

[0022] In one possible implementation, the housing is provided with a first mounting port, through which the operating mechanism extends into the receiving cavity.

[0023] In one possible implementation, both the input port and the operating mechanism are located on the second cover plate;

[0024] Alternatively, the operating mechanism may be located on the second cover plate, and the input connection port may be located on the side of the box body used for connection with the second cover plate.

[0025] In one possible implementation, the housing is provided with an output connection port communicating with the receiving cavity, and the output connection end extends out of the receiving cavity through the output connection port.

[0026] In one possible implementation, the housing includes:

[0027] The box body has the receiving cavity formed inside, and the box body is provided with a first opening communicating with the receiving cavity;

[0028] A first cover plate is placed over the first opening and is detachably connected to the box body.

[0029] The distance between each of the busbar components and the first cover plate is different.

[0030] In one possible implementation, the box body is provided with a second opening communicating with the receiving cavity, and the first opening is disposed opposite to the second opening; the box body further includes:

[0031] The second cover plate is placed over the second opening and is detachably connected to the box body.

[0032] Each of the aforementioned busbar components is stacked between the first cover plate and the second cover plate, and the input connection port is located on the second cover plate or the body of the housing.

[0033] In one possible implementation, the box body is provided with a third opening communicating with the receiving cavity, and the box body further includes:

[0034] The third cover plate is placed over the third opening and is detachably connected to the box body.

[0035] The output connection port is located on the third cover plate.

[0036] In one possible implementation, the third cover plate is an insulating plate, and the shape of the output connection port is adapted to the shape of the output component.

[0037] In one possible implementation, a second insulating element is also included, located between the input component and the cavity wall of the receiving cavity.

[0038] In one possible implementation, the second insulating element is connected to at least one of the input component and the cavity wall of the receiving cavity.

[0039] In one possible implementation, the receiving cavity is provided with a mounting component, and each of the busbar assemblies is fixed to the housing via one of the mounting components.

[0040] In one possible implementation, heat dissipation holes are provided on both opposite sides of the box body.

[0041] In one possible implementation, the box body is provided with a connecting part for connecting to the cabinet body of the energy storage cabinet.

[0042] Secondly, embodiments of this application provide an energy storage cabinet, including a cabinet body and a current combining device as described in any of the first aspects, wherein the current combining device is located inside the cabinet body.

[0043] In one possible implementation, the junction device is detachably connected to the cabinet.

[0044] In one possible implementation, the cabinet is provided with a heat dissipation device for dissipating heat from the busbar components of the busbar device.

[0045] Thirdly, embodiments of this application provide an electrical system including an input power supply and a combiner device as described in any of the first aspects, or an energy storage cabinet as described in any of the second aspects, wherein the combiner device is connected to the input power supply via an input connection terminal.

[0046] In the combination device, energy storage cabinet, and electrical system provided in this application embodiment, by stacking at least two combination components in the combination device in a certain direction, the space occupied by the combination components in that direction can be rationally utilized, thereby effectively reducing the space occupied by the combination components and improving the adaptability of the combination device to installation cavities of different shapes, so as to achieve rational utilization of the space in the installation cavity. At the same time, it also makes the shape design of the installation cavity for installing the combination components more flexible and can better adapt to the installation space requirements under different usage scenarios. Attached Figure Description

[0047] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0048] Figure 1 A perspective view of the combiner device provided in the embodiments of this application;

[0049] Figure 2 A front view of the combiner device provided in the embodiments of this application;

[0050] Figure 3 This is an exploded structural diagram of the combiner device provided in the embodiments of this application;

[0051] Figure 4 This is an exploded structural diagram of the housing in the combiner device provided in the embodiments of this application;

[0052] Figure 5 A schematic diagram of a first embodiment of a busbar component in a busbar device provided in this application;

[0053] Figure 6 A schematic diagram of a second embodiment of the busbar component in the busbar device provided in this application;

[0054] Figure 7 This is a schematic diagram of the connection structure of adjacent busbar components in a busbar device provided in an embodiment of this application;

[0055] Figure 8 for Figure 7A schematic diagram of the connection structure between adjacent bus components from another perspective;

[0056] Figure 9 for Figure 7 Another structural diagram of the connection structure between adjacent bus components in the diagram;

[0057] Figure 10 A partial structural diagram of the internal structure of the combiner device provided in the embodiments of this application;

[0058] Figure 11 for Figure 10 A schematic diagram of the internal structure of the junction device from another perspective;

[0059] Figure 12 for Figure 10 Another perspective of the internal partial structure of the junction device;

[0060] Figure 13 A schematic diagram showing the arrangement of the input and output components of adjacent busbar components in a busbar device provided in an embodiment of this application;

[0061] Figure 14 Electrical schematic diagram of the busbar assembly in the busbar device provided in the embodiments of this application;

[0062] Figure 15 Schematic diagram of heat dissipation simulation results of the busbar device provided in the embodiments of this application Figure 1 ;

[0063] Figure 16 A schematic diagram of the heat dissipation simulation structure of the busbar device provided in the embodiments of this application. Figure 2 .

[0064] Figure label:

[0065] 100 - Box body; 110 - Receiving cavity; 120 - Input connection port; 130 - Output connection port; 140 - Box body; 141 - Connecting part; 150 - First cover plate; 160 - Third cover plate; 170 - Heat dissipation hole; 180 - Second cover plate; 181 - First mounting port; 190 - Mounting component; 200 - Busbar assembly; 210 - Input component; 211 - Positive input copper busbar; 212 - Negative input copper busbar; 213 - Second insulating component; 220 - Output component; 221 - Positive output copper busbar; 222 - Negative output copper busbar; 223 - First insulating component; 230 - Disconnecting switch; 231 - Operating mechanism; 300 - Connector.

[0066] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0067] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0068] For large energy storage container products, a current collection module is usually set up in the electrical compartment for current collection. In addition, there are usually power distribution modules and other components in the electrical compartment. This results in a large number of components gathered in the electrical compartment, complex wiring, and more difficult maintenance and installation.

[0069] Among related technologies, there are also solutions that integrate the bus module into the box or cabinet for modular design. However, the internal components are still scattered and difficult to maintain, resulting in problems such as large space occupation.

[0070] To avoid the above problems, this application provides a busbar device. By stacking the busbar components, the busbar components are arranged in a regular manner, so that the space inside the electrical compartment or busbar device is used in a reasonable way, effectively reducing the space occupied by the busbar components. At the same time, after the busbar components are arranged in a regular manner, the wiring path is clear, and it is easier for maintenance personnel to locate the faulty busbar component.

[0071] It is understood that the current combining device in the embodiments of this application is typically used in electrical systems. The electrical system here is not limited to power generation systems, but can also be other devices that need to manage current distribution through the current combining module, such as battery management systems, data centers, communication base stations, etc. This application does not limit them.

[0072] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0073] This application provides an electrical system including an input power supply and a combiner device as described in the following embodiments. The combiner device can collect the input electrical energy and then output it to meet different power distribution needs.

[0074] The electrical system can be a photovoltaic power generation system, a wind power generation system, an uninterruptible power supply system, a charging station, or any other equipment that needs to collect the electrical energy input from the power source through a combiner device. This embodiment does not limit it in this way.

[0075] The type of input power varies depending on the electrical system. For example, in a photovoltaic power generation system, the input power is a battery pack. In this case, a combiner unit is connected to the battery pack, collecting the electrical energy input from the battery pack before outputting it to the client, which can be an electrical device. For a charging station, the input power can be the power grid. The combiner unit is connected to the power grid to distribute power to the charging piles to meet different charging needs.

[0076] Using the busbar device described in the following embodiments, which integrates the original busbar module, not only improves the convenience of installation and maintenance but also effectively reduces the space occupied, facilitating the arrangement of other components in the electrical system. The structure of the busbar device will now be described in detail.

[0077] For some embodiments of this application, please refer to Figure 7 As shown, the combiner device includes at least two stacked combiner components 200. Each combiner component 200 has an input connection terminal and an output connection terminal. The input connection terminal is connected to an input power source to receive electrical energy, and the output connection terminal is connected to a client to output the combined electrical energy to the client.

[0078] It is understood that the bus component 200 can be a common bus structure, as long as it can receive electrical energy from different input power sources and collect and output it. This embodiment does not limit it.

[0079] Meanwhile, the combiner assembly can be directly placed in the electrical compartment of the electrical system, or it can be integrated inside the combiner box and then the combiner box is fixed in the electrical compartment. The specific choice can be made according to the actual situation, and this embodiment does not limit it.

[0080] In the embodiments of this application, for ease of description, such as Figure 7 As shown, the three intersecting directions are defined as follows: the X direction, the width direction (Y direction, i.e., the first direction), and the height direction (Z direction, i.e., the second direction). It can be understood that the X, Y, and Z directions here can be determined based on actual needs, specifying their orientation and angular relationships, and are not merely arbitrary. Figure 3 The direction and angle relationships shown in the image only require the three directions to intersect.

[0081] Optionally, the busbar components 200 can be stacked sequentially along the Y direction, meaning that the centers of adjacent busbar components 200 have different coordinates in the Y direction.

[0082] Optionally, the busbar components 200 can be stacked sequentially along the X direction, meaning that the centers of adjacent busbar components 200 have different coordinates in the X direction.

[0083] Optionally, the busbar components 200 can be stacked sequentially along the Z direction, meaning that the centers of adjacent busbar components 200 have different coordinates in the Z direction.

[0084] By stacking the busbar components 200, the wiring path of the busbar components can be clearly defined. In the event of a fault, maintenance personnel can quickly locate the faulty busbar component, effectively reducing the difficulty of maintenance.

[0085] Meanwhile, the stacking direction of the combiner assembly 200 can be adaptively adjusted according to the internal space of the electrical compartment or combiner box to minimize the space occupied by the combiner device in the electrical compartment or combiner box. This allows the electrical compartment or combiner box to adjust its shape according to the external usage environment to better adapt to the installation space requirements under different usage scenarios. Specifically, the stacking direction of the busbar components 200 within the electrical compartment or junction box can be determined based on the number of busbar components 200 and the space occupied by each individual busbar component 200. This arrangement ensures that the busbar components 200 are as compatible as possible with the shape of the space in the electrical compartment or junction box used for their installation. Furthermore, compared to arranging the busbar components 200 sequentially in the same direction on the same plane, overlapping the busbar components 200 effectively reduces the space occupied in that direction, thus reducing the overall length required by the busbar device in that direction. This allows the busbar components 200 to meet the installation environment requirements while minimizing the space they occupy. Consequently, the electrical compartment or junction box does not need to occupy a large space in a particular direction specifically for the busbar components 200. In practical applications, the shape of the electrical compartment or junction box can be selected according to the specific usage scenario, and the busbar components 200 can be adaptively arranged within it, effectively improving adaptability in different usage scenarios.

[0086] For some embodiments of this application, please refer to Figure 5 and Figure 6 As shown, the combiner assembly 200 includes an input component 210 and an output component 220. One end of the input component 210 forms an input connection terminal, and one end of the output component forms an output connection terminal. The input component 210 receives electrical energy through the input connection terminal, and the output component 220 outputs the collected electrical energy through the output connection terminal.

[0087] The number of input components 210 and output components 220 in each bus component 200 can be designed according to actual bus requirements. For example, each bus component 200 can be equipped with two input components 210 and two output components 220, with the input components 210 and 220 connected in a one-to-one correspondence.

[0088] The input component 210 and the output component 220 can be connectors made of common conductive materials, such as copper, aluminum, composite materials, etc. As long as they can transmit and collect electrical energy smoothly, this embodiment does not limit them.

[0089] In some embodiments of this application, the bus assembly 200 further includes a disconnect switch 230, the input terminal of which is connected to the input component 210, and the output terminal of which is connected to the output component 220.

[0090] Specifically, each disconnector 230 is connected to an input component 210 and an output component 220. Multiple different input power sources can be connected through the input component 210, and the collected electrical energy can be output through the output component 220 to the client.

[0091] Adding the disconnect switch 230 allows for physical isolation during maintenance or repair, ensuring the safety of maintenance personnel and preventing accidental electric shock or short circuits. It also isolates the faulty section in case of a malfunction. Furthermore, the disconnect switch 230 enhances the flexibility of circuit control. In short, adding the disconnect switch 230 not only improves the safety and reliability of the busbar in the electrical system but also increases its flexibility.

[0092] Taking the example of each disconnector 230 being connected to two different input power supplies via input component 210, its electrical principle is as follows: Figure 14 As shown, the disconnector 230 is located between the input component 210 and the output component 220, and is electrically connected to both of them. Of course, to further enhance the safety of the busbar, a surge protector (SPD) can also be added. The SPD protects electrical equipment from overvoltage transients (such as voltage spikes caused by lightning strikes or switching operations in the system) by limiting voltage peaks and directing excess current to the ground.

[0093] It is understandable that the number of disconnect switches 230 in each busbar assembly 200 can be set according to actual usage requirements, such as one, two or more. When multiple disconnect switches 230 are set, they are arranged side by side. The distance between the corresponding input components 210 and the distance between the corresponding output components 220 of adjacent disconnect switches 230 are both greater than or equal to the second preset value to meet the safety design requirements such as electrical clearance value and creepage distance.

[0094] It is understandable that the second preset value can be adjusted according to the actual situation. For example, if an insulation component is added between adjacent input components 210, the value of the second preset value can be reduced accordingly based on the performance difference of different insulation materials. However, if no insulation material is added for processing, the value of the second preset value can be increased accordingly.

[0095] For example, please see Figure 7 and Figure 8 As shown, the bus assembly 200 includes two disconnect switches 230, which are arranged side by side along the X direction. The distance A between the corresponding input components 210 and the corresponding output components 220 of the disconnect switches 230 is greater than or equal to a second preset value.

[0096] Furthermore, to facilitate maintenance of the busbar assembly 200, the various busbar assemblies can be staggered.

[0097] For example, each busbar component 200 can be stacked along a first direction and at least partially offset along a second direction, that is, the projections of each busbar component 200 in the first direction only partially overlap, and the offset parts are easily damaged connection points and other parts.

[0098] Specifically, the input component 210 can be staggered along the second direction, and the disconnect switches 230 of adjacent busbar components 200 can also be staggered.

[0099] The output components 220 of each busbar assembly 200 can at least partially overlap in the projection in the first direction to facilitate the installation of the busbar assembly 200. At this time, there is a first gap between the overlapping parts of the output components 220 of adjacent busbar assemblies 200. The value of the first gap can be determined according to the actual situation, as long as the output components 220 can meet the safety requirements.

[0100] For example, the input component 210, the disconnect switch 230 and the output component 220 are connected sequentially along the Z direction, and the bus assembly 200 is stacked in the Y direction and has a height difference in the Z direction, so that the disconnect switches 230 of adjacent bus assemblies 200 and their connection points with the input component 210 and the output component 220 will not block each other, which facilitates the maintenance of the bus assembly from the Y direction.

[0101] Among them, such as Figure 9As shown, the disconnect switches 230 of adjacent busbar components 200 can be staggered in the Z direction, that is, at different heights in the Z direction. For example, the arrangement height in the Z direction decreases sequentially, and correspondingly, the arrangement height of the input component 210 also decreases sequentially. Of course, in order to facilitate the centralized placement of the operating mechanism 231 of the disconnect switch 230 and make it easier to adjust, the disconnect switches 230 of adjacent busbar components 200 can be placed on the same coordinate in the Y direction.

[0102] Optionally, to facilitate the connection between the input component 210 and the input power supply, the input connection terminals of the input components 210 of each bus assembly 200 can be located in the same plane. In this case, please refer to [link to relevant documentation]. Figure 13 As shown, the input component 210 can include a mounting section, a connecting section, and an input section connected in sequence. The mounting section extends along the X direction, the connecting section connects the input section and the mounting section, so that the input sections of each busbar assembly can be in the same plane. The input section extends along the Z direction, the mounting section is connected to the disconnecting switch 230 at the end opposite to the connecting section, and the surface of the input section forms an input connection terminal.

[0103] For some embodiments of this application, please refer to Figure 1 and Figure 2 As shown, the combiner device includes a housing 100 and a combiner assembly 200. The housing 100 has an internal cavity 110, and an input connection port 120 and an output connection port 130 are provided on the housing 100. The combiner assembly 200 is located within the cavity 110. The combiner assembly 200 receives electrical energy through the input connection port 120 and outputs the collected electrical energy through the output connection port 130. In other words, the combiner assembly 200 is connected to the input power source through the input connection port 120 and to the client through the output connection port 130.

[0104] The busbar assembly 200 is directly integrated into the housing 100, and the input connection port 120 and the output connection port 130 are located on the housing 100, making the external interface clear and facilitating connection with the input power supply and the client. In addition, the overall modular design allows for flexible matching with different electrical systems, reducing the difficulty of installation and maintenance.

[0105] For some embodiments of this application, please refer to Figure 4As shown, the housing 100 includes a housing body 140 and a first cover plate 150. The housing body 140 forms a receiving cavity 110. The housing body 140 has a first opening communicating with the receiving cavity 110. The first cover plate 150 covers the first opening and is detachably connected to the housing body 140, using common connection methods such as bolts or snap-fits. This allows for maintenance of the busbar assembly 200 from this side. During use, the first cover plate 150 blocks the opening of the receiving cavity 110 on that side to protect the busbar assembly 200 inside the receiving cavity 110. The distance between each busbar assembly 200 and the first cover plate 150 varies, for example, decreasing or increasing sequentially, to further improve the convenience of later maintenance.

[0106] For example, please see Figure 3 As shown, the busbar assembly 200 is stacked along the Y direction, and the first cover plate 150 is located at the end of the box body 140 extending in the Y direction (i.e., at the end in the width direction).

[0107] Furthermore, the box body 100 also includes a second cover plate 180. The box body 140 is provided with a second opening that communicates with the receiving cavity 110. The second cover plate 180 covers the second opening and is detachably connected to the box body 140, for example, by common methods such as bolts or snap-fit.

[0108] For example, the box body 140 has a first opening and a second opening at both ends in the Y direction. The first cover plate 150 and the second cover plate 180 respectively cover the first opening and the second opening. During later maintenance, the first cover plate 150 or the second cover plate 180 can be removed according to the position of the bus assembly 200, which further improves the convenience of maintenance.

[0109] It is understandable that the first cover plate 150 and the second cover plate 180 can be located on either side of the box body 100, not limited to the width direction of the box body 100, as long as they are located at both ends of the direction in which the busbar assembly 200 is stacked, so as to facilitate the maintenance of the busbar assembly 200.

[0110] Furthermore, to facilitate the installation of the busbar assembly 200, mounting components 190, corresponding to each busbar assembly 200, can be provided within the receiving cavity 110. Each busbar assembly 200 is fixed to the mounting component 190, which is connected to the housing 100, providing support for the busbar assembly 200. Simultaneously, the mounting components 190 are arranged sequentially at intervals between the first cover plate 150 and the second cover plate 180, with the distance between adjacent mounting components 190 greater than or equal to a second preset value. This limits the gap between the output components 220 of adjacent busbar assemblies 200, ensuring that the busbar assembly 200, after being installed in the receiving cavity 110, meets safety design requirements such as electrical clearance and creepage distance.

[0111] Specifically, the disconnector switch 230 can be fixed to the corresponding mounting component 190 with bolts to achieve connection with the mounting component 190. The input component 210 and the output component 220 can be connected to the mounting component 190 through insulating parts, or they can be left unconnected, depending on the actual site conditions.

[0112] After the busbar assembly 200 is installed on the corresponding mounting component 190, the distance between the input components 210 of adjacent busbar assemblies 200 and the first gap between the output components 220 of adjacent busbar assemblies 200 are greater than or equal to a second preset value. The distance between the input component 210 and the first cover plate 150, the second cover plate 180, or the housing body 140, and the distance between the output component 220 and the first cover plate 150, the second cover plate 180, or the housing body 140 are also considered. Figure 9 In all cases, B is greater than or equal to the first preset value to meet safety regulations such as electrical clearance and creepage distance.

[0113] Understandably, the value of the first preset value is determined based on the actual situation. If space requirements are high and the value of the first preset value is to be reduced, insulation components can be added accordingly. However, if space requirements are not high, insulation components can be omitted and the value of the first preset value can be increased accordingly.

[0114] For example, when it is necessary to minimize the size of the box 100, insulating material can be provided at corresponding positions of the box body 140, the first cover plate 150 and the second cover plate 180. Insulating material is provided between the input components 210 of adjacent busbar assemblies 200, within the first gap, between the input components 210 corresponding to adjacent disconnect switches 230 of the same busbar assemblies 200 and between the output components 220.

[0115] For example, when the size requirements of the housing 100 are slightly more lenient, a first insulating member 223 can be provided in the first gap between the output components 220 between adjacent busbar assemblies 200 to limit the distance between the output components 220. The first insulating member 223 is connected to at least one of the output components 220 of the two adjacent busbar assemblies 200. A second insulating member 213 is provided on the side of the input component 210 adjacent to the inner wall of the receiving cavity 110 to limit the distance between the input component 210 and the housing body 140. The second insulating member 213 is connected to at least one of the inner wall of the receiving cavity 110 and the input connection portion 210.

[0116] It is understood that the first insulator 223 and the second insulator 213 can also be fixed in their respective positions by other components connected to the electrical compartment or housing 100, without being connected to the busbar assembly 200.

[0117] The first insulating member 223 and the second insulating member 213 are both made of rigid insulating material, such as rigid plastic, to support the output component 220 and the input component 210.

[0118] For example, corresponding holes can be made on the input component 210, the output component 220, and the housing body 140. The first insulating member 223 and the second insulating member 213 are columnar structures. After the first insulating member 223 or the second insulating member 213 is inserted into the corresponding hole, it can be locked from both ends of the first insulating member 223 or the second insulating member 213 by connecting members such as nuts.

[0119] It is understood that the above connection method is only an example for illustration. In the actual connection process, common connection methods such as adhesive or snap-fit ​​can also be used. At the same time, the first insulating member 223 and the second insulating member 213 can also be other shapes, as long as they can effectively restrict the position of each component. This embodiment does not limit them.

[0120] After setting the first insulating component 223 and the second insulating component 213, it is no longer necessary to paste insulating paper or other insulating materials on the box body 140, the first cover plate 150, and the second cover plate 180 for insulation. This not only improves the strength of the busbar assembly 200, but also ensures that the busbar assembly 200 meets the safety design requirements.

[0121] For example, with Figure 10Taking the arrangement as an example, the input component 210 includes a positive input copper busbar 211 and a negative input copper busbar 212. The output component 220 includes a positive output copper busbar 221 and a negative output copper busbar 222. The positive output copper busbar 221, the negative output copper busbar 222, the positive input copper busbar 211, and the positive output copper busbar 221 are all electrically connected to the disconnecting switch 230. Of course, if the disconnecting switch 230 is not installed, the positive output copper busbar 221 and the negative output copper busbar 222 can be electrically connected to the positive input copper busbar 211 and the positive output copper busbar 221 respectively. At the same time, one end of the positive input copper busbar 211 and the negative input copper busbar 212 forms an input connection terminal, and one end of the positive output copper busbar 221 and the negative output copper busbar 222 forms an output connection terminal.

[0122] The disconnect switches 230 of each busbar assembly 200 are arranged in a front-to-back relationship in the Y direction. The distance between the positive input copper busbar 211 and the negative input copper busbar 212 of the same busbar assembly 200, the distance between the positive input copper busbar 211 and the negative input copper busbar 212 of adjacent busbar assemblies 200, the distance between the positive output copper busbar 221 and the negative output copper busbar 222 of the same busbar assembly 200, the distance between the positive output copper busbar 221 and the negative output copper busbar 222 of adjacent busbar assemblies 200 are all greater than or equal to a second preset value, such as ensuring that the corresponding electrical clearance value meets 21.6mm and the creepage distance meets 30.5mm, thus meeting the safety design requirements under the corresponding operating conditions. Meanwhile, the distances between the positive input copper busbar 211, negative input copper busbar 212, positive output copper busbar 221, and negative output copper busbar 222 adjacent to the wall of the junction box 100 and the wall of the box 100 are all greater than or equal to the first preset value, for example, so that the corresponding electrical clearance value meets 30.5mm and the creepage distance meets 41.9mm, thus meeting the safety design requirements under the corresponding usage conditions.

[0123] Of course, the specific values ​​of the first preset value, the second preset value, and the corresponding electrical clearance and creepage distance can be set according to the safety design requirements under different usage conditions. The above embodiments are only examples for illustration and are not intended to limit them.

[0124] Furthermore, in some cases, if the distance between the input component 210 or output component 220 adjacent to the first cover plate 150 or the second cover plate 180 and the first cover plate 150 or the second cover plate 180 is small, and if the input component 210 or output component 220 shakes, it may affect the performance. In such cases, a first insulating member 223 or a second insulating member 213 can be added at the corresponding position to ensure that the busbar assembly 200 always meets the safety requirements during use. This embodiment does not impose any restrictions on this.

[0125] In some embodiments of this application, the mounting component 190 can be arranged at a gradually increasing height in the Z direction from the second cover plate 180 to the first cover plate 150, so that the busbar assembly 200 can be at least partially staggered in the mounting cavity, thereby adapting to the assembly requirements of staggered arrangement of the disconnect switch 230 and input component 210 of the adjacent busbar assembly 200, so as to further improve the convenience of maintenance of the busbar assembly 200.

[0126] It is understood that the mounting component 190 can be one or more rods that are individually connected to the box body 140, or it can be a bracket composed of multiple rods. As long as it can serve as a bearing platform to stably install the bus assembly 200 on the box body 140, this application embodiment does not limit it.

[0127] In some embodiments of this application, in order to facilitate connection with the client, the positive output copper busbar 221 and the negative output copper busbar 222 can be extended to the outside of the housing 100 through the output connection port 130. The input part of the client can be directly connected to the output connection end on the copper busbar outside the housing 100. For example, the input part of the client can be directly connected to the copper busbar by bolts or other common methods, which improves the convenience of connection.

[0128] The output connection port 130 can be located on any side of the housing 100 to facilitate connection with the client.

[0129] In some cases, the cable connecting the client to the combiner may run underground. In this case, the output connection port 130 can be set at the bottom of the box body 140, so that the positive output copper busbar 221 and the negative output copper busbar 222 can both extend from there to the bottom of the box body 140, making it easy to connect to the client.

[0130] Furthermore, the housing 100 may also include a third cover plate 160. The housing body 140 is provided with a third opening that communicates with the receiving cavity 110. The third cover plate 160 is placed on the third opening and is detachably connected to the housing body 140. The output connection port 130 is provided on the third cover plate 160, and the output connection end extends out of the receiving cavity 110 through the output connection port. Thus, when the output component 220 fails, the third cover plate 160 can be directly disassembled for maintenance, effectively improving the convenience of maintenance.

[0131] In order to avoid affecting the normal operation of the output component 220, the third cover plate 160 can be made of an insulating plate made of insulating material, such as plastic.

[0132] Optionally, please see Figure 4 , Figure 7 and Figure 10As shown, the output connection port 130 includes a plurality of through holes, such as rectangular holes, formed on the third cover plate 160 and adapted to the shape of the positive output copper busbar 221 and the negative output copper busbar 222. The positive output copper busbar 221 and the negative output copper busbar 222 extend out of the receiving cavity 110 through the corresponding through holes.

[0133] For example, an adjacent first bus component and a second bus component are provided, the structure of the first bus component being as follows: Figure 5 As shown, the second bus component is Figure 6 As shown, when the isolating switches 230 of the first and second bus components are staggered in the Z direction, the input components 210 and output components 220 of the first and second bus components can be configured according to... Figure 13 The first and second busbars are arranged such that the input component 210 of the first busbar is located above the input component 210 of the second busbar, while the output component 220 of the first busbar overlaps with the projected portion of the second busbar in the XZ plane. This allows the output connection terminals of both the first and second busbars to extend out of the housing 100 from the output connection port 130 on the third cover plate 160, facilitating connection with the client. Alternatively, the output connection terminals can be at different heights in the Z direction. For example, if the second busbar is closer to the operator's side, the output connection terminal of the first busbar extends below the output connection terminal of the second busbar, making it easier for the operator to connect the output connection terminal to the client.

[0134] It is understandable that when setting up multiple busbar components 200, the output connection terminals closer to the operation side should be higher in the Z direction, so that the output connection terminals of each busbar component 200 are set in a stepped manner.

[0135] In addition, when the output connection port 130 is located on the third cover plate 160, the input connection port 120 can be located on the first cover plate 150, the second cover plate 180, or the box body 140, depending on the actual usage environment.

[0136] The front of a typical combiner unit faces the battery compartment of the electrical system. Placing the input port 120 on this side can improve the convenience of wiring.

[0137] For example, please see Figure 10 and Figure 12 As shown, the second cover plate 180 is disposed on the front of the housing body 140, and the housing body 140 has connecting plates disposed on both sides of the second cover plate 180 on this side. The input connection port 120 is disposed on the connecting plate. The connector 300 is connected to the positive input copper busbar 211 and the negative input copper busbar 212 through the input connection port 120. The connector 300 is also used to connect to the input power supply.

[0138] The connector 300 can be a common plug-in type, bolt type, spring type, etc. It has a copper or other conductive structure for connecting with the input component 210, and is wrapped with an insulating material, such as polyamide or polycarbonate.

[0139] Specifically, at least two connection points can be set on the input connection terminals of each positive input copper busbar 211 and positive output copper busbar 221, and each connection point is connected to a connector 300, so that the disconnect switch 230 can be connected to at least two different input power supplies.

[0140] Furthermore, for disconnect switches 230 that require control via an operating mechanism 231 such as a handle, the operating mechanism 231 can be extended from the second cover plate 180 side to allow maintenance personnel to operate it.

[0141] Furthermore, the operating handle of the disconnect switch 230 and the input connection port 120 can be set on the same side of the housing 100, that is, the input connection port 120 can be set on the side where the housing 100 is connected to the second cover plate 180, or the input connection port 120 and the operating handle 231 can be set on the second cover plate 180 for operation.

[0142] For example, a first mounting port 181 can be provided on the second cover plate 180. The operating mechanism 231 of the disconnect switch 230 extends to the outside of the receiving cavity 110 through the first mounting port 181. Of course, the specific position of the first mounting port 181 on the second cover plate 180 is determined according to the position of the disconnect switch 230, and this embodiment does not limit it.

[0143] In some embodiments of this application, heat dissipation holes 170 are provided on both opposite sides of the housing body 140, so that gas can enter or leave the receiving cavity 110 through the heat dissipation holes 170 to dissipate heat for the busbar assembly 200.

[0144] It is understood that the heat dissipation hole 170 can be a through hole opened on any side of the box body 140, or it can be an opening opened on the box body 140 that communicates with the receiving cavity 110, and then a heat dissipation mesh is set at the opening, with the mesh holes on the heat dissipation mesh serving as the heat dissipation hole 170, or it can be set in other ways, as long as it can connect the receiving cavity 110 with the outside world. This embodiment does not limit it here.

[0145] In addition, auxiliary heat dissipation devices such as fans, semiconductor cooling components or surface coolers can be added to assist in heat dissipation and improve the heat dissipation effect of the busbar 200.

[0146] These auxiliary heat dissipation devices can be installed inside or outside the housing 100 and supported by the housing 100, or they can be fixed to the electrical compartment of the electrical system, as long as they can dissipate heat for the bus assembly 200. This embodiment does not limit them.

[0147] For example, this embodiment uses the installation of an external surface cooler in the electrical compartment as an example to conduct a heat dissipation simulation experiment on the busbar device.

[0148] The receiving cavity 110 of the busbar device is provided with two busbar components 200, namely a first busbar component and a second busbar component. Both the first busbar component and the second busbar component include two disconnect switches 230 arranged side by side. The disconnect switches 230 of the first busbar component and the second busbar component are staggered, that is, the first busbar component and the second busbar component are arranged sequentially along the Y direction, and they have a height difference in the Z direction, so that the projections of the disconnect switches 230 of the first busbar component and the second busbar component in the XZ plane will not overlap. Only the output component 220 of the first busbar component and the projection of the second busbar component in the XZ plane have an overlapping area. At the same time, the projections of the disconnect switches 230 of the first busbar component and the second busbar component in the XY plane overlap, so as to facilitate the installation of the operating mechanism 231 on the second cover plate 180. Connectors 300 are located on both sides of the second cover plate 180. Output components 220 extend through the output connection ports 130 on the third cover plate 160 to the outside of the receiving cavity 110. Heat dissipation holes 170 are located on two opposite sides of the housing body 140. Both output components 220 and input components 210 are made of copper busbars. The positive input copper busbar 211 and negative input copper busbar 212 of each disconnector switch 230 are connected to two connectors 300 respectively. One positive output copper busbar 221 and one negative output copper busbar 222 are each provided. Simulation test results are as follows: Figure 15 , Figure 16 As shown in the table below.

[0149]

[0150] The simulation results show that the temperature of each component in the manifold can be maintained within the normal operating range, and the gas flows smoothly after entering the manifold without any obvious airflow short circuit.

[0151] In some embodiments of this application, the housing 100 is provided with a connecting part 141, which can be connected to the electrical compartment of the electrical system to prevent the housing 100 from shifting inside the electrical compartment.

[0152] For example, the connecting part 141 can be one of the slide rails or slide grooves respectively disposed on opposite sides of the box body 140, and located on the side of the box body 140 away from the third cover plate 160. In this case, the other part can be disposed in the electrical compartment, so that the slide rail can be inserted into the slide groove, thereby installing the busbar in the electrical compartment.

[0153] For example, the connecting part 141 can also be a pulley, and a corresponding guide rail is provided in the electrical compartment, so as to restrict the position of the junction device by means of the pulley and the guide rail.

[0154] For example, the connecting part 141 may also be a connecting lug with a threaded hole, so that the connecting part 141 is connected to the electrical compartment by bolts.

[0155] It is understood that the structure of the connection part 141 described above is only for illustrative purposes and is not intended to limit it, as long as it enables the combiner device to be installed in the electrical compartment.

[0156] This application also provides an energy storage cabinet, which can be used in electrical systems to store components such as combiner devices and distribution boxes.

[0157] Specifically, a dedicated electrical compartment can be set up inside the energy storage cabinet, and the combiner device can be placed inside the electrical compartment, or it can be detachably installed inside the electrical compartment via the connection part 141.

[0158] Furthermore, a cooling device such as a surface cooler and a fan can be installed on the cabinet to dissipate heat for the busbar assembly 200 inside the busbar device.

[0159] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A combiner device, characterized in that, include: At least two bus components (200) are stacked together; The busbar assembly (200) has an input connection terminal and an output connection terminal. The busbar assembly (200) receives electrical energy through the input connection terminal and outputs the collected electrical energy through the output connection terminal.

2. The combiner device according to claim 1, characterized in that, The at least two busbar components (200) are stacked along a first direction, and the projected portions of the at least two busbar components (200) in the first direction overlap.

3. The combiner device according to claim 2, characterized in that, The bus assembly (200) includes an input component (210) and an output component (220) that are electrically connected, one end of the input component (210) forming the input connection terminal, and one end of the output component (220) forming the output connection terminal; The projections of the input components (220) of the at least two busbar components (200) in the first direction are staggered, and the projections of the output components (220) of the at least two busbar components (200) in the first direction at least partially overlap.

4. The combiner device according to claim 3, characterized in that, There is a first gap between the output components (220) of two adjacent busbar assemblies (200).

5. The combiner device according to claim 4, characterized in that, It also includes a first insulating element (223) located within the first gap.

6. The combiner device according to claim 5, characterized in that, The first insulating element (223) is connected to at least one of the two output components (220) adjacent to the first insulating element (223).

7. The combiner device according to any one of claims 3-6, characterized in that, Also includes: A box body (100) has an internal cavity (110) and an input connection port (120) communicating with the cavity (110). The busbar assembly (200) is located inside the receiving cavity (110), the input connection terminal is connected to the input power supply via the input connection port (120), and the output connection terminal is located outside the receiving cavity (110).

8. The combiner device according to claim 7, characterized in that, Also includes: A connector (300) for connecting the input terminal and the input power supply via the input connection port (120).

9. The combiner device according to claim 7 or 8, characterized in that, The housing (100) includes: The box body (140) has the receiving cavity (110) formed inside, and the box body (140) is provided with a first opening communicating with the receiving cavity (110); The first cover plate (150) is placed over the first opening and is detachably connected to the box body (140); The distance between each of the busbar components (200) and the first cover plate (150) is different.

10. The combiner device according to claim 9, characterized in that, The box body (140) is provided with a second opening communicating with the receiving cavity (110), and the first opening is disposed opposite to the second opening; the box body (100) further includes: The second cover plate (180) is provided on the second opening and is detachably connected to the box body (140); Each of the aforementioned busbar components (200) is stacked between the first cover plate (150) and the second cover plate (180), and the input connection port (120) is disposed on the second cover plate (180) or the box body (140).

11. The combiner device according to claim 10, characterized in that, The bus assembly (200) also includes an isolating switch (230) that electrically connects the input terminal and the output terminal.

12. The combiner device according to claim 11, characterized in that, The operating mechanism (231) of the disconnecting switch (230) is located outside the receiving cavity (110).

13. The combiner device according to claim 12, characterized in that, The input connection port (120) and the operating mechanism (231) are both located on the second cover plate (180); Alternatively, the operating mechanism (231) may be located on the second cover plate (180), and the input connection port (120) may be located on the side of the box body (140) that is connected to the second cover plate (180).

14. The combiner device according to any one of claims 9-13, characterized in that, The housing (100) is provided with an output connection port (130) communicating with the receiving cavity (110), and the output connection end extends out of the receiving cavity (110) through the output connection port (130).

15. The combiner device according to claim 14, characterized in that, The box body (140) is provided with a third opening communicating with the receiving cavity (110), and the box body (100) further includes: The third cover plate (160) is provided on the third opening and is detachably connected to the box body (140); The output connection port (130) is located on the third cover plate (160).

16. The combiner device according to claim 15, characterized in that, The third cover plate (160) is an insulating plate, and the shape of the output connection port (130) is adapted to the shape of the output component (220).

17. The combiner device according to any one of claims 7-16, characterized in that, It also includes a second insulating member (213) located between the input component (120) and the cavity wall of the receiving cavity (110).

18. The combiner device according to claim 17, characterized in that, The second insulating member (213) is connected to at least one of the input component (120) and the cavity wall of the receiving cavity (110).

19. The combiner device according to any one of claims 7-18, characterized in that, An installation component (190) is provided inside the receiving cavity (110), and each of the busbar assemblies (200) is fixed to the box body (100) via one of the installation components (190).

20. The combiner device according to any one of claims 7-19, characterized in that, The box body (100) has heat dissipation holes (170) on both opposite sides.

21. The combiner device according to any one of claims 7-20, characterized in that, The box (100) is provided with a connecting part (141), which is used to connect with the cabinet of the energy storage cabinet.

22. An energy storage cabinet, characterized in that, It includes a cabinet and a junction device as described in any one of claims 1-21, wherein the junction device is located within the cabinet.

23. The energy storage cabinet according to claim 22, characterized in that, The junction device is detachably connected to the cabinet.

24. The energy storage cabinet according to claim 22 or 23, characterized in that, The cabinet is equipped with a heat dissipation device for dissipating heat from the busbar assembly (200).

25. An electrical system, characterized in that, It includes an input power supply and a combiner device as described in any one of claims 1-21, or an energy storage cabinet as described in any one of claims 22-24, wherein the input connection terminal of the combiner device is connected to the input power supply.

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