Liquid-cooled bus and power equipment

Abstract

The embodiment of the utility model relates to the technical field of energy storage equipment, and provides a liquid-cooled bus and power equipment, the liquid-cooled bus comprises a first busbar and a second busbar, at least part of the first busbar is used for being installed in a cabinet body of the power equipment, and the second busbar is used for being installed in the cabinet body of the power equipment. The second busbars and the first busbars are arranged along the extension direction of the liquid-cooled bus, and the first busbars corresponding to the adjacent cabinet bodies are detachably connected through the second busbars. The first busbar and the second busbar extend along a first direction, and the larger surfaces of the first busbar and the second busbar are vertically arranged; the first busbar and / or the second busbar are / is internally provided with a cavity, and the cavity is used for containing a cooling medium. According to the invention, the first busbar and / or the second busbar are / is cooled in a heat transfer manner, so that the normal operation of the power equipment is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of electric power equipment, and in particular to a liquid-cooled busbar and electric power equipment. Background Art

[0002] Power equipment such as an energy storage system mainly includes a busbar structure and multiple energy storage cabinets. The multiple energy storage cabinets are assembled in parallel to provide sufficient DC power to the DC load.

[0003] In the related art, the energy storage cabinet mainly includes a cabinet body, a battery cluster and a high-voltage box. The battery cluster and the busbar structure are installed in the cabinet body. The battery cluster is electrically connected to the high-voltage box, and the high-voltage box is electrically connected to the busbar structure. The corresponding busbar structures in adjacent energy storage cabinets are generally connected by wires.

[0004] However, the inventors recognized that, in actual use, when the power of an electrical device such as an energy storage system increases or the power of a load increases, the current in the connecting wires between adjacent busbars will increase, which in turn will cause the temperature of the wires to rise, which may lead to accelerated aging of the wires and even loss of their original mechanical strength and electrical properties, which may further cause a fire, thereby affecting the safe operation of the entire electrical equipment. Utility Model Content

[0005] One or more embodiments of the present application provide a liquid-cooled busbar to solve or at least partially alleviate the problem in the related art that the temperature of the connecting wires between adjacent busbars is too high, thereby affecting the safe operation of power equipment.

[0006] In a first aspect of the present application, a liquid-cooled busbar is provided, which adopts the following technical solution:

[0007] The liquid-cooled busbar includes a first busbar and a second busbar, at least a portion of the first busbar is used to be installed in a cabinet of an electric power device, the second busbar and the first busbar are arranged along an extension direction of the liquid-cooled busbar, the first busbars corresponding to adjacent cabinets are detachably connected via the second busbar, the first busbar and the second busbar extend along a first direction and the larger surfaces of the first busbar and the second busbar are arranged vertically; a chamber is provided inside the first busbar and / or the second busbar, and the chamber is used to contain a cooling medium.

[0008] By adopting the above technical solution, the liquid-cooled bus mainly includes a first busbar and a second busbar. According to the capacity requirements of the power equipment, such as an energy storage system, multiple cabinets of the power equipment can be connected in parallel. Specifically, a first busbar is installed in each cabinet, and the corresponding two first busbars in adjacent cabinets are detachably connected through the second busbar, which is equivalent to increasing the length of the entire liquid-cooled busbar, so that it can be suitable for the connection of multiple cabinets.

[0009] A second busbar, such as a copper busbar or an aluminum busbar, is used between the first busbars corresponding to adjacent cabinets to replace the wires in the related art, and a chamber for containing a cooling medium is provided inside the first busbar and / or the second busbar, so that the first busbar and / or the second busbar are cooled by heat transfer through the cooling medium, so that the first busbar and / or the second busbar are kept within a normal temperature range to avoid overheating of the first busbar and / or the second busbar, thereby ensuring that the power equipment can operate normally while meeting the capacity requirements of the power equipment, such as the energy storage system.

[0010] The first busbar and the second busbar both extend along the first direction and the large surfaces of the two busbars are arranged vertically, which can not only effectively reduce the sagging deformation degree of the area between the two ends of the liquid-cooled busbar and extend the service life of the liquid-cooled busbar, but also the temperature generated by the vertically arranged liquid-cooled busbar during operation is easier to rise and discharge, thereby correspondingly improving the heat dissipation efficiency, so that the current carrying capacity of the liquid-cooled busbar may be improved, and the capacity of power equipment such as energy storage systems is correspondingly increased.

[0011] In some embodiments, the first busbar and / or the second busbar comprises a busbar body and a first sealing block, the busbar body is provided with the chamber inside, the busbar body is provided with a liquid injection port connected to the chamber, and the first sealing block is sealed and connected to the liquid injection port.

[0012] In some embodiments, the liquid-cooled busbar also includes a liquid inlet joint and a liquid outlet joint, which are respectively installed on the busbar body and are respectively connected to the chamber; the liquid inlet joint and the liquid outlet joint are used to connect to the liquid cooling unit through the liquid inlet pipeline and the liquid outlet pipeline respectively.

[0013] In some embodiments, the first busbar and / or the second busbar further includes an insulating sealing sleeve, and the insulating sealing sleeve is sleeved on the outer side of the busbar body.

[0014] In some embodiments, the first busbar and / or the second busbar further includes a second sealing block, the chamber extends vertically to the top of the busbar body to form a processing opening, and the second sealing block is sealingly connected to the processing opening.

[0015] In some embodiments, the chamber includes a first connecting flow channel and multiple first liquid flow channels, the multiple first liquid flow channels are arranged in an interval along the vertical direction, the multiple first liquid flow channels are respectively connected to the first connecting flow channel, and the insulating sealing sleeve is arranged on the outside of the busbar body to seal and wrap the first liquid flow channel and the first connecting flow channel.

[0016] In some embodiments, the first liquid flow channel is consistent with the extension direction of the busbar body, or the first liquid flow channel is arranged at an angle to the extension direction of the busbar body.

[0017] In some embodiments, the first bus bar and / or the second bus bar further include a plurality of second sealing blocks, the chamber includes a plurality of second liquid flow channels, the plurality of second liquid flow channels are arranged at intervals in a horizontal direction, and the arrangement direction is perpendicular to the extension direction of the bus bar body, and the second sealing block is sealed and connected to the top opening of the second liquid flow channel.

[0018] In some embodiments, when the first bus bar and / or the second bus bar is provided with the chamber, the chamber includes at least one of an S-shaped flow channel, a return flow channel, and a spiral flow channel.

[0019] In a second aspect of the present application, an electric power device is provided, which adopts the following technical solution:

[0020] The electric power equipment comprises the liquid-cooled busbar as described above, and also comprises a plurality of cabinets and a plurality of supporting structures, wherein the first busbar in the liquid-cooled busbar is installed in the cabinet via the supporting structure.

[0021] Since the power equipment includes a liquid-cooled busbar, the power equipment at least has all the technical effects of the liquid-cooled busbar, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, rather than limiting the present application.

[0023] Figure 1 This is one of the schematic cross-sectional structure diagrams of a liquid-cooled busbar according to some embodiments of the present application.

[0024] Figure 2 This is one of the schematic cross-sectional structure diagrams of the second busbar according to some embodiments of the present application.

[0025] Figure 3 This is one of the schematic diagrams of the axial structure of a liquid-cooled busbar according to some embodiments of the present application.

[0026] Figure 4 This is one of the exploded structural schematic diagrams of the second busbar according to some embodiments of the present application.

[0027] Figure 5 This is the second schematic diagram of the axial structure of the liquid-cooled busbar according to some embodiments of the present application.

[0028] Figure 6This is the second schematic diagram of the explosion structure of the second busbar according to some embodiments of the present application.

[0029] Figure 7 This is a second schematic diagram of the cross-sectional structure of the second busbar according to some embodiments of the present application.

[0030] Figure 8 for Figure 7 Schematic diagram of the enlarged structure of part A.

[0031] Fig. 9 This is the third schematic diagram of the axial structure according to some embodiments of the present application.

[0032] Fig.10 This is the third schematic diagram of the explosion structure of the second busbar according to some embodiments of the present application.

[0033] Fig.11 This is the third schematic diagram of the cross-sectional structure of the second busbar according to some embodiments of the present application.

[0034] Fig.12 for Fig.11 Schematic diagram of the enlarged structure of part C.

[0035] Fig.13 This is the fourth schematic diagram of the explosion structure of the second busbar according to some embodiments of the present application.

[0036] Fig.14 This is one of the structural schematic diagrams of two cabinets and a liquid-cooling bus according to some embodiments of the present application.

[0037] Fig.15 It is a schematic diagram of the exploded structure of multiple busbars according to some embodiments of the present application.

[0038] Fig.16 This is the second structural schematic diagram of two cabinets and a liquid cooling bus according to some embodiments of the present application.

[0039] In the figure: 1-first busbar; 2-second busbar; 21-busbar body; 211-chamber; 2111-first connecting channel; 2112-first liquid channel; 2113-second liquid channel; 212-liquid injection port; 213-processing opening; 22-first sealing block; 23-liquid inlet joint; 24-liquid outlet joint; 25-insulating sealing sleeve; 26-second sealing block; 3-cabinet; 4-support structure; 41-first support member; 42-second support member. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings showing multiple embodiments of the present application. It should be understood that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments described in the present application, all other embodiments obtained by ordinary technicians in this field without spending creative work will fall within the scope of protection of the present application.

[0041] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those generally understood by technicians in the technical field of this application; the terms used in the specification of the application are only for the purpose of describing specific implementation methods, and are not intended to limit this application; the terms "including", "comprising", "having", "having", "containing", "including", etc. in the specification and claims of this application and the above-mentioned figure description are open-ended words. Therefore, "including", "comprising", "having" is a method or device with one or more steps or elements, for example, which has one or more steps or elements, but is not limited to having only these one or more elements. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned figures are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, the meaning of "multiple" is two or more.

[0042] In the description of the present application, it should be understood that the terms "center", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. For example, in the coordinate system XYZ provided herein, the positive direction of the X-axis represents the right, the reverse direction of the X-axis represents the left, the positive direction of the Y-axis represents the front, the reverse direction of the Y-axis represents the back, the positive direction of the Z-axis represents the top, and the reverse direction of the Z-axis represents the bottom.

[0043] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0045] As mentioned above, it should be emphasized that when the term "includes / comprising" is used in this specification, it is used to clearly indicate the presence of the features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps, components or groups of features, integers, steps, components. As used in this application, the singular forms "a", "an" and "the" also include plural forms, unless the context clearly indicates otherwise.

[0046] The words "a" and "an" in this specification may mean one, but may also be consistent with the meaning of "at least one" or "one or more". The term "about" generally means plus or minus 10% of the mentioned value, or more specifically plus or minus 5%. The term "or" used in the claims means "and / or" unless it is clearly stated that it refers to only alternative solutions.

[0047] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0048] Figure 1 This is one of the schematic cross-sectional structure diagrams of a liquid-cooled busbar according to some embodiments of the present application.

[0049] One or more embodiments of the present application disclose a liquid-cooled busbar. Figure 1The liquid-cooled busbar includes a first busbar 1 and a second busbar 2, at least a portion of the first busbar 1 is used to be installed in a cabinet 3 of an electric power device, the second busbar 2 and the first busbar 1 are arranged along the extension direction of the liquid-cooled busbar, the first busbars 1 corresponding to adjacent cabinets are detachably connected through the second busbar 2, the first busbar 1 and the second busbar 2 extend along a first direction and the larger surfaces of the first busbar 1 and the second busbar 2 are arranged vertically; a chamber 211 is provided inside the first busbar 1 and / or the second busbar 2, and the chamber 211 is used to contain a cooling medium.

[0050] In at least one embodiment, the liquid-cooled bus mainly includes a first busbar 1 and a second busbar 2. According to the capacity requirements of the power equipment, such as an energy storage system, multiple cabinets 3 of the power equipment can be connected in parallel. Specifically, a first busbar 1 is installed in each cabinet 3, and the corresponding two first busbars 1 in adjacent cabinets are detachably connected through the second busbar 2, which is equivalent to increasing the length of the entire liquid-cooled bus, so that it can be applied to the connection of multiple cabinets. The extension direction of the liquid-cooled bus refers to the length direction of the liquid-cooled bus, which is the same as the length direction of the liquid-cooled bus. Figure 1 The direction of the X-axis in the central coordinate system is parallel, and can also be understood as the left and right direction of the liquid cooling busbar, and also corresponds to the parallel arrangement direction of multiple cabinets of the power equipment. The first busbar 1 can refer to a longer busbar structure in a single cabinet 3, and the second busbar 2 can refer to a shorter busbar structure relative to the first busbar 1.

[0051] The first direction can be Figure 1 The X axes of the central coordinate system are parallel, so the first busbar 1 and the second busbar 2 extend in the horizontal direction respectively.

[0052] A second busbar 2, such as a copper busbar or an aluminum busbar, is used between the first busbars 1 corresponding to adjacent cabinets to replace the wires in the related art, and a chamber 211 for containing a cooling medium is provided inside the first busbar 1 and / or the second busbar 2, so that the first busbar 1 and / or the second busbar 2 can be kept within a normal temperature range through the cooling medium to avoid overheating of the first busbar 1 and / or the second busbar 2, and to ensure that the power equipment can operate normally while meeting the capacity requirements of the power equipment, such as the energy storage system. The length of the chamber 211 on the corresponding busbar should be less than the length of the busbar to ensure that the busbar has sufficient strength.

[0053] The first busbar 1 and the second busbar 2 both extend in the first direction and the larger surfaces of the two busbars are arranged vertically, which can not only effectively reduce the sagging deformation degree of the area between the two ends of the liquid-cooled busbar and extend the service life of the liquid-cooled busbar, but also the temperature generated by the vertically arranged liquid-cooled busbar during operation is easier to rise and discharge, thereby correspondingly improving the heat dissipation efficiency, so that the current carrying capacity of the liquid-cooled busbar may be improved, and the capacity of power equipment such as energy storage systems is correspondingly increased.

[0054] The first busbar 1 and the second busbar 2 are installed in the cabinet and extend horizontally. Both busbars are flat buses and have two relatively large surfaces, which are defined as larger surfaces. Therefore, the first busbar 1 and the second busbar 2 connected to the first busbar 1 are both as follows. Figure 1 and Figure 3 The vertical setting.

[0055] The fact that at least part of the first busbar 1 is in the cabinet 3 means that the portion between the two ends of the first busbar 1 is in the cabinet, and the two ends of the first busbar 1 extend out of the cabinet; or, one end of the first busbar 1 is in the cabinet, and the other end extends out of the cabinet.

[0056] Figure 2 is one of the cross-sectional structural schematic diagrams of the second busbar according to some embodiments of the present application, Figure 4 This is one of the exploded structural schematic diagrams of the second busbar according to some embodiments of the present application.

[0057] In some embodiments, in combination Figure 2 and Figure 4 As shown, the first busbar 1 and / or the second busbar 2 include a busbar body 21 and a first sealing block 22, the interior of the busbar body 21 is provided with the chamber 211, the busbar body 21 is provided with a liquid injection port 212 connected to the chamber 211, and the first sealing block 22 is sealed and connected to the liquid injection port 212.

[0058] In at least one embodiment, a liquid injection port 212 connected to the chamber 211 is provided on the busbar body 21, so that when the cooling medium in the chamber 211 is reduced to a level sufficient to affect the normal heat dissipation requirements of the busbar, the cooling medium can be added to the chamber 211 of the busbar through the liquid injection port 212 to ensure that there is a sufficient amount of cooling medium in the chamber 211, so that the busbar can operate normally for a long time within a suitable temperature range. After the cooling medium is added to the chamber 211, the first sealing block 22 can be sealed and connected to the liquid injection port 212, thereby effectively preventing the cooling medium in the chamber 211 from overflowing. Furthermore, the liquid injection port 212 can not only serve as an opening for adding cooling medium to the chamber 211, but also facilitates regular inspection of the quality and storage capacity of the cooling medium circulating inside the busbar body 21 at a later stage.

[0059] Among them, the first sealing block 22 can be sealed and connected with the injection port 212 in the following ways. For example, part of the first sealing block 22 is inserted into the injection port 212; or, an internal thread is provided in the injection port 212, and an external thread is provided on the outer wall of the first sealing block 22, so that the first sealing block 22 is connected to the injection port 212 by means of threads; or, the first sealing block 22 is directly covered on the injection port 212, and the injection port 212 can also be sealed.

[0060] Figure 3 This is one of the axial structural schematic diagrams of a liquid-cooled busbar according to some embodiments of the present application, to illustrate the detachable connection of two busbars.

[0061] In some embodiments, in combination Figure 3 As shown, the liquid-cooled busbar also includes a liquid inlet joint 23 and a liquid outlet joint 24, and the liquid inlet joint 23 and the liquid outlet joint 24 are respectively installed on the busbar body 21 and are respectively connected to the chamber 211; the liquid inlet joint 23 and the liquid outlet joint are used to connect the liquid cooling unit through the liquid inlet pipeline and the liquid outlet pipeline respectively.

[0062] In at least one embodiment, the cooling medium in the chamber 211 can be circulated in the following manner. Specifically, two interfaces for connecting the liquid inlet connector 23 and the liquid outlet connector 24 respectively can be provided on the busbar body 21, and the two interfaces are respectively connected to the chamber 211; the liquid outlet of the external liquid cooling unit is connected to an interface of the chamber 211 through the liquid inlet pipe and the liquid inlet connector 23, and the other interface of the chamber 211 is connected to the liquid return port of the liquid cooling unit through the liquid outlet pipe, so that the liquid cooling unit outputs low-temperature cooling medium from the liquid outlet, and enters the chamber 211 of the busbar body 21 through the liquid inlet pipe and the liquid inlet connector 23 in turn, and then enters the chamber 211 of the busbar body 21. The low-temperature cooling medium in 11 can absorb the heat generated during the operation of the busbar body 21, and then the cooling medium that absorbs the heat flows out from the chamber 211, and flows back to the liquid cooling unit through the liquid outlet joint 24, the liquid outlet pipeline and the return liquid port in turn, so that the cooling medium that absorbs the heat is cooled by the liquid cooling unit and then the low-temperature cooling medium is output again, and this process is circulated continuously. In other words, the cooling medium circulates in the chamber 211 of the busbar body 21, and continuously takes away the heat of the busbar body 21 by heat transfer, so that the busbar body 21 always works within a suitable temperature range, and accordingly ensures the continuous normal operation of the power equipment.

[0063] The liquid inlet connector 23 and the liquid outlet connector 24 can be plugged into the two interfaces on the busbar body 21 by quick plugging, so as to realize the rapid connection between the liquid inlet connector 23 and the liquid outlet connector 24 and the two interfaces. The liquid cooling unit can be a liquid cooling air conditioner, and the cooling medium can be a liquid cooling medium, such as cooling water, electronic fluorinated liquid, etc. As long as the cooling medium can cool and dissipate the busbar body 21 by heat transfer, it is applicable to the present technical solution, and no specific limitation is made here.

[0064] exist Figure 3 In the embodiment, the first busbar 1 and the second busbar 2 can be fixedly connected by bolt fasteners. Alternatively, the first busbar 1 and the second busbar 2 can be connected and fixed by plugging, as long as the current-carrying area at the connection between the first busbar 1 and the second busbar 2 is not less than the current-carrying area of ​​other parts of the first busbar 1 and the second busbar 2, the corresponding various detachable connection methods are applicable to the technical solution, and no specific limitation is made here.

[0065] Figure 4 This is one of the exploded structural schematic diagrams of the second busbar 2 according to some embodiments of the present application.

[0066] In some embodiments, in combination Figure 2 and Figure 4 As shown, the first busbar 1 and / or the second busbar 2 further includes an insulating sealing sleeve 25 , and the insulating sealing sleeve 25 is sleeved on the outer side of the busbar body 21 .

[0067] In at least one embodiment, an insulating sealing sleeve 25 is sleeved on the outer side of the busbar body 21 to seal the chamber 211 of the busbar body 21 , thereby effectively reducing the possibility of leakage of the cooling medium in the chamber 211 .

[0068] Among them, the shape of the insulating sealing sleeve 25 matches the shape of the busbar body 21, and the volume of the insulating sealing sleeve 25 is larger than the volume of the chamber 211 in the busbar body 21, so as to avoid that the insulating sealing sleeve 25 can more comprehensively cover and wrap the outside of the part corresponding to the chamber 211 in the busbar body 21, thereby further improving the sealing of the busbar body 21. The insulating sealing sleeve 25 can be a sleeve structure.

[0069] When the insulating sealing sleeve 25 is sleeved on the outside of the busbar body 21, it can not only reduce the possibility of short circuit with other metal parts around the busbar body 21, but also reduce the possibility of leakage of cooling medium in the chamber 211. The insulating sealing sleeve 25 can be made of insulating materials such as silicone and rubber.

[0070] In some embodiments, in combination Figure 2 and Figure 4As shown, the first busbar 1 and / or the second busbar 2 further includes a second sealing block 26 , the chamber 211 extends vertically to the top of the busbar body 21 to form a processed opening 213 , and the second sealing block 26 is sealed and connected to the processed opening 213 .

[0071] In at least one embodiment, the processing opening 213 can be understood as the opening left by processing the busbar body 21 through the processing equipment to form the chamber 211. In other words, the processing equipment can process the busbar body 21 from the processing opening 213 to form the chamber 211 inside the busbar body 21. After the chamber 211 is formed, the processing opening 213 makes the chamber 211 communicate with the external environment, so the second sealing block 26 is sealed and connected to the processing opening 213, effectively reducing the possibility of leakage of the cooling medium in the chamber 211 from the processing opening 213. The chamber 211 is an integral storage cavity for storing cooling medium. In other words, there is no shielding such as a partition in the chamber 211.

[0072] Among them, since the processing opening 213 is located in the vertical direction of the busbar body 21, such as the top, the cooling medium in the chamber 211 is further prevented from leaking. The second sealing block 26 and the processing opening 213 can be sealed and connected by plugging, cover connection, welding, etc.; wherein, when the second sealing block 26 and the processing opening 213 of the busbar body 21 are connected by welding, the second sealing block 26 and the busbar body 21 can be made of the same material, so that the welding quality of the second sealing block 26 and the busbar body 21 at the processing opening 213 can be ensured.

[0073] Figure 6 This is a second schematic diagram of the exploded structure of the second busbar 2 according to some embodiments of the present application. Figure 7 This is a second schematic cross-sectional structure diagram of the second busbar 2 according to some embodiments of the present application. Figure 8 for Figure 7 The enlarged structural diagram of part A in the figure is as follows: Fig.10 This is a third schematic diagram of the exploded structure of the second busbar 2 according to some embodiments of the present application. Fig.11 This is a third schematic diagram of the cross-sectional structure of the second busbar 2 according to some embodiments of the present application. Fig.12 for Fig.11 Schematic diagram of the enlarged structure of part C.

[0074] In some embodiments, in combination Figures 6 to 8 , Figures 10 to 12As shown, the chamber 211 includes a first connecting flow channel 2111 and a plurality of first liquid flow channels 2112. The plurality of first liquid flow channels 2112 are arranged in an interval along the vertical direction. The plurality of first liquid flow channels 2112 are respectively connected to the first connecting flow channel 2111. The insulating sealing sleeve 25 is sleeved on the outside of the busbar body 21 to seal and wrap the first liquid flow channel 2112 and the first connecting flow channel 2111.

[0075] In at least one embodiment, the chamber 211 may be a segmented storage chamber for storing liquid cooling medium; a plurality of first liquid flow channels 2112 may be opened in the following manner, for example, by processing from a larger surface of the busbar body 21 through processing equipment, so that the larger surface of the busbar body 21 forms a plurality of first liquid flow channels 2112 arranged along a vertical interval after processing; and the first liquid flow channels 2112 are extended along the extension direction of the busbar body 21, and the opening end of the first liquid flow channel 2112 perpendicular to the extension direction of the busbar body 21 can be defined as a first opening, so the first opening is on the larger surface of the busbar body 21, and the first opening can be understood as the opening left after the busbar body 21 is processed to form the first liquid flow channel 2112. The first opening on the busbar body 21 has the following two forms. If the first liquid flow channel 2112 is arranged along the extension direction of the busbar body 21, then the first liquid flow channel 2112 is formed. Figure 6 and Fig.10 When both ends of the Y-axis direction of the coordinate system of the busbar body 21 pass through the larger surface of the busbar body 21, the larger surface of the busbar body 21 has two first openings arranged opposite to each other, and the first liquid flow channel 2112 can be a through-hole structure; if the first liquid flow channel 2112 is along Figure 6 and Fig.10 When one end in the Y-axis direction of the coordinate system passes through the larger surface of the busbar body 21, and the other end does not pass through the larger surface of the busbar body 21, in other words, the larger surface of the busbar body 21 has a first opening, and the first liquid flow channel 2112 can be a groove structure.

[0076] The first connecting flow channel 2111 can be opened in the following manner. For example, vertical processing can be performed from the top surface of the busbar body 21 through processing equipment to form the first connecting flow channel 2111 which is respectively connected to the plurality of first liquid flow channels 2112. The first connecting flow channel 2111 can be extended in the vertical direction. The opening end of the first connecting flow channel 2111 extending in the vertical direction to the top of the busbar body 21 can be defined as the second opening. Therefore, the second opening is on the top surface of the busbar body. The second opening can be understood as the opening left after the busbar body 21 is processed to form the first connecting flow channel 2111.

[0077] Since the first communication channel 2111 is respectively connected to a plurality of first liquid flow channels 2112 arranged vertically at intervals (see Figure 8 and Fig.12As shown), the cooling medium can be diverted through the vertically extending first connecting channel 2111 to enter multiple first liquid cooling channels, and finally the cooling medium can fill the entire chamber 211 to ensure the cooling effect on the busbar body 21.

[0078] Fig. 9 This is the third schematic diagram of the axial structure according to some embodiments of the present application.

[0079] In addition, the insulating sealing sleeve 25 is sleeved on the outer side of the busbar body 21 (see Fig. 9 As shown), and is sealed and wrapped in the first liquid flow channel 2112, the first connecting flow channel 2111, the first opening and the second opening, so as to reduce the leakage of the cooling medium in the first liquid flow channel 2112 in the busbar body 21 from the first liquid flow channel 2112, the first connecting flow channel 2111, the first opening and the second opening.

[0080] The first busbar 1 and the second busbar 2 can be connected by bolt fasteners (see Figure 5 As shown), and the thickness of the connection between the two matches the thickness of the first busbar 1 to ensure the current carrying capacity of the liquid-cooled busbar.

[0081] In some embodiments, the first liquid flow channel 2112 is consistent with the extension direction of the busbar body 21 , or the first liquid flow channel 2112 is arranged at an angle to the extension direction of the busbar body 21 .

[0082] In at least one embodiment, the extension direction of the busbar body 21 refers to the length direction of the busbar body 21 and is Figure 7 and Figure 8 Since the busbar body 21 extends in the first direction, for example, horizontally, the first liquid flow channel 2112 is consistent with the extension direction of the busbar body 21, and it can be understood that the first liquid flow channel 2112 also extends horizontally. Figures 6 to 8 shown.

[0083] The first liquid flow channel 2112 is arranged at an angle with the extension direction of the busbar body 21. It can be understood that the first liquid flow channel 2112 is arranged obliquely relative to the busbar body 21. In other words, one end of the extension direction of the first liquid flow channel 2112 is higher than the other end. Figures 10 to 12 shown.

[0084] Fig.13 This is the fourth schematic diagram of the explosion structure of the second busbar 2 in some embodiments of the present application.

[0085] In some embodiments, in combination Fig.13As shown, the first busbar 1 and / or the second busbar 2 also include a plurality of second sealing blocks 26, the chamber 211 includes a plurality of second liquid flow channels 2113, the plurality of second liquid flow channels 2113 are arranged at intervals in the horizontal direction, and the arrangement direction is perpendicular to the extension direction of the busbar body 21, and the second sealing block 26 is sealed and connected to the top opening of the second liquid flow channel 2113.

[0086] In at least one embodiment, the extension direction of the busbar body 21 is Fig.13 The direction of the X-axis of the coordinate system is parallel to the direction of the extension of the busbar body 21 and perpendicular to the extension of the busbar body 21. Fig.13 The direction of the Y axis of the coordinate system is parallel. A plurality of second liquid flow channels 2113 are arranged at intervals perpendicular to the extension direction of the busbar body 21 by opening a plurality of second liquid flow channels 2113 inside the busbar body 21. In other words, a plurality of second liquid flow channels 2113 can constitute a cavity, each second liquid flow channel 2113 extends along the extension direction of the busbar body 21, and each second liquid flow channel 2113 extends along the vertical direction to the top of the busbar body 21 to form a third opening. The third opening can be used as an opening formed after the busbar body 21 is processed with the second liquid flow channel 2113. By sealingly connecting the second sealing block 26 with the top opening of the second liquid flow channel 2113, such as the third opening, the possibility of leakage of the cooling medium from the third opening can be effectively reduced.

[0087] In some embodiments, when the first bus bar and / or the second bus bar is provided with the chamber, the chamber 211 includes at least one of an S-shaped flow channel, a return flow channel, and a spiral flow channel.

[0088] In at least one embodiment, at least one of an S-shaped flow channel, a return flow channel, and a spiral flow channel can be opened in the chamber 211, so that the cooling medium can adopt a circulating flow channel in the above-mentioned S-shaped flow channel, return flow channel, and spiral flow channel to accelerate the cooling efficiency of the busbar body 21.

[0089] Among them, when the first busbar 1 and / or the second busbar 2 are provided with the chamber, the chamber 211 includes at least one of an S-shaped flow channel, a return flow channel, and a spiral flow channel. It can be understood that the chamber can be provided only in the first busbar 1, and the chamber 211 includes at least one of an S-shaped flow channel, a return flow channel, and a spiral flow channel. Alternatively, the chamber can be provided only in the second busbar 2, and the chamber 211 includes at least one of an S-shaped flow channel, a return flow channel, and a spiral flow channel. Alternatively, when the first busbar 1 and the second busbar 2 are provided with the chambers respectively, the structures of the chambers of the first busbar 1 and the second busbar 2 can be the same or different. When the chambers of the two busbars are different, for example, when the chamber of the first busbar 1 is an S-shaped flow channel, the chamber of the second busbar 2 can be at least one of a return flow channel or other flow channels of different shapes.

[0090] Of course, other flow channels different from the above-mentioned flow channels may also be used in the chamber 211, such as serpentine flow channels, wave-shaped flow channels, etc., which are not specifically limited here.

[0091] Fig.14 This is a schematic diagram of the top view of the structure of two cabinets of power equipment connected together. Fig.16 It is a schematic diagram of the structure of two cabinets of the power equipment in front view.

[0092] One or more embodiments of the present application also discloses an electric power device.

[0093] Reference Fig.14 and Fig.16 The power equipment includes the liquid-cooled busbar as described in the above embodiment, and also includes multiple cabinets and multiple supporting structures 4. The first busbar 1 in the liquid-cooled busbar is installed in the cabinet 3 through the supporting structure 4.

[0094] In at least one embodiment, the power equipment may be an energy storage system, in which case the energy storage system may include a plurality of energy storage cabinets, each of which includes a cabinet body 3, a battery cluster and a support structure 4, the battery cluster and the support structure 4 may be arranged in the cabinet body 3, and the output power line of the battery cluster may be electrically connected to the first busbar 1. Alternatively, the power equipment is a switch cabinet system, in which case the switch cabinet system may include a plurality of switch cabinets, each of which may include a cabinet body 3, a support structure 4, the above-mentioned liquid-cooled busbar and other power products, the power products and the support structure 4 may be arranged in the cabinet body 3, the power products may be electrically connected to the first busbar 1 of the liquid-cooled busbar, wherein the power products may be circuit breakers, etc., which are not specifically limited here. Alternatively, the power equipment includes at least one of an energy storage system, a switch cabinet system, etc., and any power equipment having the above-mentioned liquid-cooled busbar is applicable to the present application, which is not specifically limited here.

[0095] Fig.15 It is a schematic diagram of the exploded structure of multiple busbars according to some embodiments of the present application.

[0096] The first busbar 1 and the second busbar 2 can be installed in the top of the cabinet 3 in the following manner, for example, the cabinet 3 has a perforated side wall along the extension direction of the busbar body 21, and the support structure 4 may include a first support member 41 and a second support member 42, and the first support member 41 may be installed in the perforated hole, so that the end of the first busbar 1 or the second busbar 2 can be fixedly installed in the top of the cabinet 3 through the first support member 41, and the second support member 42 can be installed between two oppositely arranged side walls of the cabinet 3, and the part between the two ends of the first busbar 1 can be installed in the cabinet 3 through the second support member 42. The first support member 41 and the second support member 42 are respectively sleeved on the outside of the corresponding busbar to support and fix the busbar at the corresponding position.

[0097] When two cabinets 3 of the power equipment are in parallel operation, the two cabinets 3 are arranged adjacent to each other, the first busbar 1 is inside the cabinet 3, one end of the second busbar 2 is connected to the first busbar 1, and the other end passes through the through hole of the side wall of the cabinet 3 and extends out of the cabinet 3, so as to be connected to the busbar corresponding to other adjacent cabinets 3.

[0098] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A liquid-cooled busbar, characterized in that: It includes a first busbar and a second busbar, at least a part of the first busbar is used to be installed in a cabinet of an electric power device, the second busbar and the first busbar are arranged along the extension direction of the liquid-cooled busbar, the first busbars corresponding to adjacent cabinets are detachably connected through the second busbar, the first busbar and the second busbar extend along a first direction and the larger surfaces of the first busbar and the second busbar are arranged vertically; a chamber is provided inside the first busbar and / or the second busbar, and the chamber is used to contain a cooling medium.

2. The liquid-cooled busbar according to claim 1, characterized in that: The first busbar and / or the second busbar comprises a busbar body and a first sealing block. The chamber is arranged inside the busbar body. A liquid injection port communicating with the chamber is arranged on the busbar body. The first sealing block is sealedly connected to the liquid injection port.

3. The liquid-cooled busbar according to claim 2, characterized in that: It also includes a liquid inlet joint and a liquid outlet joint, which are respectively installed on the busbar body and are respectively connected to the chamber; the liquid inlet joint and the liquid outlet joint are used to connect to the liquid cooling unit through the liquid inlet pipeline and the liquid outlet pipeline respectively.

4. The liquid-cooled busbar according to claim 2, characterized in that: The first busbar and / or the second busbar further comprises an insulating sealing sleeve, and the insulating sealing sleeve is sleeved on the outer side of the busbar body.

5. The liquid-cooled busbar according to claim 2 or 4, characterized in that: The first busbar and / or the second busbar further comprises a second sealing block, the chamber extends in a vertical direction to the top end of the busbar body to form a processing opening, and the second sealing block is sealingly connected to the processing opening.

6. The liquid-cooled busbar according to claim 4, characterized in that: The chamber includes a first connecting flow channel and a plurality of first liquid flow channels, wherein the plurality of first liquid flow channels are arranged in an interval along the vertical direction, and the plurality of first liquid flow channels are respectively connected to the first connecting flow channel, and the insulating sealing sleeve is sleeved on the outside of the busbar body to seal and wrap the first liquid flow channel and the first connecting flow channel.

7. The liquid-cooled busbar according to claim 6, characterized in that: The first liquid flow channel is consistent with the extension direction of the busbar body, or the first liquid flow channel is arranged at an angle to the extension direction of the busbar body.

8. The liquid-cooled busbar according to claim 2 or 4, characterized in that: The first busbar and / or the second busbar further comprises a plurality of second sealing blocks, the chamber comprises a plurality of second liquid flow channels, the plurality of second liquid flow channels are arranged at intervals in a horizontal direction, and the arrangement direction is perpendicular to the extension direction of the busbar body, and the second sealing block is sealed and connected to the top opening of the second liquid flow channel.

9. The liquid-cooled busbar according to claim 4, characterized in that: When the first busbar and / or the second busbar is provided with the chamber, the chamber includes at least one of an S-shaped flow channel, a return flow channel, and a spiral flow channel.

10. An electric power device, characterized in that: The liquid-cooled busbar comprises the liquid-cooled busbar as claimed in any one of claims 1 to 9, further comprising a plurality of cabinets and a plurality of supporting structures, wherein the first busbar in the liquid-cooled busbar is installed in the cabinet via the supporting structure.

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