Bus assembly and energy storage system

Abstract

The embodiment of the utility model relates to the field of power equipment, and provides a bus assembly and an energy storage system, the bus assembly comprises a support structure, a first busbar and a second busbar, the first busbar and the second busbar are arranged along the extension direction of the bus assembly, and the first busbar and the second busbar are detachably connected; the supporting structure is used for being installed on an energy storage cabinet, the supporting structure is arranged outside at least part of the first busbar and / or the second busbar in a sleeving mode and used for supporting the first busbar and / or the second busbar, at least part of the first busbar is located in the energy storage cabinet, and at least part of the second busbar is located in the energy storage cabinet. The two adjacent first busbars corresponding to the adjacent energy storage cabinets are connected through the second busbar, the first busbars extend horizontally, and the larger surfaces of the first busbars are vertically arranged. According to the invention, higher over-current density can be born, and the temperature of the bus assembly is correspondingly reduced, so that the normal operation of the energy storage system is ensured.

Description

Technical Field

[0001] This application relates to the field of power equipment, and in particular, to a busbar assembly and an energy storage system. Background Art

[0002] Currently, energy storage systems are mainly used to provide direct current for DC loads.

[0003] In related technologies, an energy storage system mainly includes multiple battery cabinets, and the connection between adjacent battery cabinets mostly uses high-voltage wire harnesses for parallel cabinet operation.

[0004] However, the inventors recognize that in actual use, as the power of the energy storage system increases, the high-voltage wire harness may often experience high temperatures because it needs to withstand a higher overcurrent density, which will affect the normal operation of the energy storage system. Summary of the Utility Model

[0005] One or more embodiments of this application provide a busbar assembly to solve or at least partially alleviate the problem that high-voltage wire harnesses are used between battery cabinets in related technologies and high temperatures are generated when the power increases, affecting the normal operation of the energy storage system.

[0006] In the first aspect of this application, a busbar assembly is provided, adopting the following technical solution:

[0007] The busbar assembly includes a support structure, a first busbar, and a second busbar. The first busbar and the second busbar are arranged along the extension direction of the busbar assembly, and the first busbar and the second busbar are detachably connected. The support structure is used to be installed in an energy storage cabinet. The support structure sleeves at least part of the outer sides of the first busbar and / or the second busbar to support the first busbar and / or the second busbar. At least part of the first busbar is inside the energy storage cabinet, and adjacent two first busbars corresponding to adjacent energy storage cabinets are connected by the second busbar. The first busbar extends horizontally and the larger surface of the first busbar is arranged vertically.

[0008] By adopting the above technical solution, the busbar assembly mainly includes a support structure, a first busbar, and a second busbar. Since the first busbar and the second busbar are arranged along the extension direction of the busbar assembly and the connection between the two is detachably connected, the connection operation of multiple busbars corresponding to a single energy storage cabinet can be realized.

[0009] According to the capacity requirements of the energy storage system, a first busbar can be installed in each energy storage cabinet, and a second busbar is connected between two corresponding first busbars of adjacent energy storage cabinets, which is equivalent to changing the length of the entire busbar assembly, so that it can be applied to the parallel connection operation of multiple energy storage cabinets. Moreover, a second busbar such as a copper bar or an aluminum bar is used to replace the high-voltage wire harness in the related art between the corresponding first busbars of adjacent energy storage cabinets, which can withstand a higher overcurrent density, correspondingly reduce the temperature of the busbar assembly, and ensure the normal operation of the energy storage system.

[0010] At least a part of the first busbar can be installed in the energy storage cabinet through a support structure. The first busbar extends horizontally and the large surface of the first busbar is arranged vertically. This can not only effectively reduce the sag deformation degree of the area between the two ends of the busbar assembly and extend the service life of the busbar assembly, but also the temperature generated by the vertically arranged busbar assembly during operation is more likely to rise and be discharged, correspondingly improving the heat dissipation efficiency, so that the current-carrying capacity of the busbar assembly may be increased, and correspondingly the capacity of the energy storage system is improved.

[0011] In one embodiment, the first busbar and / or the second busbar includes a housing and a sealing sleeve. An accommodation cavity is provided inside the housing, and a cooling medium is contained inside the accommodation cavity. A liquid injection port communicating with the accommodation cavity is provided on the housing, and the sealing sleeve is sleeved outside the housing.

[0012] In one embodiment, the support structure includes a first support member. The first support member is installed on the side wall of the cabinet body of the energy storage cabinet, and the first support member is provided with an installation hole for the second busbar to pass through.

[0013] In one embodiment, the first support member includes a first mounting seat, a second mounting seat and a second fastener. The first mounting seat and / or the second mounting seat is provided with a groove. The first mounting seat and the second mounting seat are arranged along the direction perpendicular to the extension direction of the busbar assembly, and the grooves provided on the first mounting seat and / or the second mounting seat form the installation hole. The first mounting seat and the second mounting seat are connected by the second fastener to adjust the width of the installation hole through the second fastener.

[0014] In one embodiment, the first support member further includes a sealing ring. The sealing ring is embedded in the installation hole, and the sealing ring is sleeved on the outer wall of the second busbar corresponding to the accommodation cavity.

[0015] In one embodiment, the support structure further includes a second support member, which includes a support base and a gland. A groove is provided on the support base, and the first busbar is installed in the groove. The gland is installed above the support base and is connected to the support base. The top and bottom ends of the first busbar are respectively connected to the gland and the support base.

[0016] In one embodiment, the busbar assembly further includes a third fastener. The ends of the first busbar and the second busbar are arranged perpendicular to the extension direction of the busbar assembly, and the third fastener passes through the connection between the first busbar and the second busbar.

[0017] In one embodiment, a slot is provided at the end of the first busbar along the extension direction of the busbar assembly, and a plug is provided at the end of the second busbar along the extension direction of the busbar assembly. The plug is inserted into the slot.

[0018] In one embodiment, a limiting slot is provided on the inner wall of the slot, and a limiting protrusion is provided on the outer wall of the plug. The limiting protrusion is engaged with the limiting slot.

[0019] In one embodiment, the busbar assembly further includes a clamping structure, and at least a part of the clamping structure is sleeved on the insertion part of the plug and the slot.

[0020] In the second aspect of the present application, an energy storage system is provided, adopting the following technical solution:

[0021] The energy storage system includes the busbar assembly as described above, and further includes an energy storage cabinet. The energy storage cabinet includes a cabinet body and a battery cluster. The battery cluster is installed in the cabinet body. The battery cluster is electrically connected to the first busbar of the busbar assembly. A first groove is provided inside the cabinet body, and the first busbar is installed in the first groove. A through hole is provided on the side wall of the cabinet body, and the first busbar and / or the second busbar pass through the through hole.

[0022] Since the energy storage system includes the busbar assembly, the energy storage system at least has all the technical effects of the busbar assembly, which will not be elaborated here.

[0023] In one embodiment, the energy storage system further includes a telescopic sleeve. A second groove is provided at the corresponding position of the outer side wall of the cabinet body and the first busbar or the second busbar. The telescopic sleeve is installed in the second grooves of two adjacent cabinet bodies, and the second busbar is located inside the telescopic sleeve.

[0024] In one embodiment, a third groove is further provided at the corresponding position of the outer side wall of the cabinet body and the telescopic sleeve. The third groove is located inside the second groove, and the end of the telescopic sleeve is embedded in the third groove.

[0025] In one embodiment, the bottom wall of the second groove slopes downward from the end close to the cabinet body to the end far from the cabinet body.

[0026] In one embodiment, the first groove is provided at the top end of the cabinet body, and the first busbar is located in the first groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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 and do not limit the present application.

[0028] Figure 1 It is a schematic structural diagram of an energy storage cabinet according to some embodiments of the present application.

[0029] Figure 2 It is a schematic structural diagram of a first busbar according to some embodiments of the present application.

[0030] Figure 3 It is a schematic cross-sectional structural diagram of a first busbar according to some embodiments of the present application.

[0031] Figure 4 It is Figure 1 an enlarged structural diagram of part A in

[0032] Figure 5 It is a schematic structural diagram of a first support member according to some embodiments of the present application.

[0033] Figure 6 It is Figure 1 an enlarged structural diagram of part B in

[0034] Figure 7 It is one of the schematic structural diagrams of a busbar assembly according to some embodiments of the present application.

[0035] Figure 8 It is another schematic structural diagram of a busbar assembly according to some embodiments of the present application.

[0036] Figure 9 It is a partial schematic structural diagram of an energy storage system according to some embodiments of the present application;

[0037] Figure 10 It is Figure 9 an enlarged structural diagram of part C in

[0038] Figure 11 It is Figure 8 an enlarged structural diagram of part D in

[0039] Figure 12Schematic diagram of a partial structure of a busbar assembly according to some embodiments of the present application.

[0040] Figure 13 One of the schematic diagrams of the structure of an energy storage system according to some embodiments of the present application.

[0041] Figure 14 For Figure 13 Enlarged schematic diagram of the structure at position E in

[0042] Figure 15 Another schematic diagram of the structure of an energy storage system according to some embodiments of the present application.

[0043] Figure 16 Exploded schematic diagram of a partial structure of a busbar assembly, a cabinet body and a telescopic sleeve according to some embodiments of the present application;

[0044] Figure 17 Schematic diagram of the docking and assembly of two energy storage cabinets according to some embodiments of the present application.

[0045] In the figure: 1 - First busbar; 101 - Housing; 102 - Sealing sleeve; 2 - Second busbar; 3 - Support structure; 31 - First support member; 311 - First mounting seat; 312 - Second mounting seat; 313 - Second fastener; 314 - Sealing ring; 32 - First fastener; 33 - Second support member; 331 - Support seat; 332 - Compression cover; 4 - Third fastener; 51 - Slot; 52 - Insert block; 53 - Limit card slot; 54 - Limit protrusion; 6 - Clamping structure; 7 - Cabinet body; 71 - First groove; 72 - Perforation; 73 - Second groove; 74 - Third groove; 8 - Battery cluster; 9 - Telescopic sleeve. Specific embodiments

[0046] To make the objectives, 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 with reference to the drawings showing multiple embodiments of the present application. It should be understood that the described embodiments are only some embodiments of the present application, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments described in the present application without creative efforts will fall within the scope of protection of the present application.

[0047] Unless otherwise defined, all technical and scientific terms used in this application shall have the same meaning as commonly understood by those skilled in the technical field to which this application pertains; the terms used in the description of this application in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "include", "comprise", "have", "possess", "contain", "include" and the like in the description and claims of this application and the above drawings are open-ended terms. Therefore, a method or apparatus "including", "comprising", "having" one or more steps or elements has one or more steps or elements, but is not limited to only having these one or more elements. The terms "first", "second", etc. in the description and claims of this application or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0048] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to this application. For example, in the coordinate system XYZ provided herein, the positive direction of the X axis represents the right side, the negative direction of the X axis represents the left side, the positive direction of the Y axis represents the front, the negative direction of the Y axis represents the rear, the positive direction of the Z axis represents the upper side, and the negative direction of the Z axis represents the lower side.

[0049] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "attach" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] References herein to "embodiments" mean that particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments.

[0051] As described above, it should be emphasized that when the term "comprising / including" is used in this specification, it is used to clearly indicate the presence of the described 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 the plural forms unless the context clearly dictates otherwise.

[0052] The terms "a" and "an" in this specification can mean one, but can 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 recited value, or more specifically plus or minus 5%. The term "or" as used in the claims means "and / or" unless explicitly stated to refer only to alternative options.

[0053] The term "and / or" in this application is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0054] Figure 1 It is a schematic structural diagram of an energy storage cabinet according to some embodiments of the present application.

[0055] One or more embodiments of the present application disclose a busbar assembly. Referring to Figure 1 , the busbar assembly includes a support structure 3, a first busbar 1, and a second busbar 2. The first busbar 1 and the second busbar 2 are arranged along the extending direction of the busbar assembly. The first busbar 1 and the second busbar 2 are detachably connected. The support structure 3 is used to be installed in the energy storage cabinet. The support structure 3 sleeves at least part of the first busbar 1 and / or the second busbar for supporting the first busbar 1 and / or the second busbar. At least part of the first busbar 1 is inside the energy storage cabinet. Adjacent first busbars 1 corresponding to adjacent energy storage cabinets are connected by the second busbar 2. The first busbar 1 extends horizontally and the larger surface of the first busbar 1.

[0056] In at least one embodiment, the busbar assembly mainly includes a support structure 3, a first busbar 1, and a second busbar 2. Since the first busbar 1 and the second busbar 2 are arranged along the extension direction of the busbar assembly and the connection between the two is detachably connected, the connection operation of multiple busbars within a single energy storage cabinet can be achieved. Among them, the extension direction of the busbar assembly refers to the length direction of the busbar assembly, which can be parallel to the direction of the X-axis in the Figure 1 coordinate system, or it can also be understood as the left-right direction of the busbar assembly.

[0057] According to the capacity requirements of the energy storage system, the first busbar can be installed in each energy storage cabinet, and the second busbar 2 can be connected between two corresponding first busbars 1 of adjacent energy storage cabinets. This is equivalent to changing the length of the entire busbar assembly, so that it can be applicable to the parallel connection operation of multiple energy storage cabinets. Moreover, using the second busbar 2 such as a copper bar or an aluminum bar to replace the high-voltage wire harness in the related technology between the corresponding first busbars 1 of adjacent energy storage cabinets can withstand a higher overcurrent density, correspondingly reducing the temperature of the busbar assembly to ensure the normal operation of the energy storage system. Among them, the first busbar 1 can refer to the busbar structure with a longer length within a single energy storage cabinet, while the second busbar 2 refers to the busbar structure with a relatively shorter length compared to the first busbar 1.

[0058] At least part of the first busbar 1 can be installed in the energy storage cabinet through the support structure 3. The first busbar extends horizontally and the large surface of the first busbar is arranged vertically. This can not only effectively reduce the degree of sag deformation in the area between the two ends of the busbar assembly and extend the service life of the busbar assembly, but also the temperature generated during the operation of the vertically arranged busbar assembly is more likely to rise and be discharged, correspondingly improving the heat dissipation efficiency, so that the current-carrying capacity of the busbar assembly may be increased, and accordingly the capacity of the energy storage system is improved.

[0059] After the first busbar 1 and the second busbar 2 are installed in the energy storage cabinet, they extend horizontally, and both busbars are flat busbars with two relatively large surfaces, which are defined as the large surfaces. Thus, both the first busbar 1 and the second busbar 2 connected to the first busbar 1 are Figure 1 vertically arranged as described above.

[0060] Among them, the statement that the support structure 3 is sleeved on at least part of the first busbar 1 and / or the second busbar 2 means that the support structure 3 can be generally a semi-enclosed U-shaped structure. When the support structure 3 is sleeved on the side walls of at least part of the first busbar 1 and / or the second busbar 2, other parts of the first busbar 1 and / or the second busbar 2, such as the top, are exposed; or, the support structure 3 can be a fully enclosed annular structure. When the support structure 3 is sleeved on the side walls of all of the first busbar 1 and / or the second busbar 2, all four surfaces of the first busbar 1 are in contact connection with the support structure 3. In other words, the support structure 3 is used to support the first busbar 1, or support the second busbar 2, or support both the first busbar 1 and the second busbar 2.

[0061] In addition, the statement that at least part of the first busbar 1 is inside the energy storage cabinet means that the part between the two ends of the first busbar 1 is inside the energy storage cabinet, and the two ends of the first busbar 1 extend outside the energy storage cabinet; or, one end of the first busbar 1 is inside the energy storage cabinet, and the other end extends outside the energy storage cabinet.

[0062] Figure 3 It is a schematic cross-sectional structure diagram of the first busbar 1 according to some embodiments of the present application.

[0063] In some embodiments, the first busbar 1 and / or the second busbar 2 include a housing 101 and a sealing sleeve 102. An accommodation cavity is provided inside the housing 101, and the inside of the accommodation cavity is used to hold a cooling medium. A liquid injection port communicating with the accommodation cavity is provided on the housing 101, and the sealing sleeve 102 is sleeved outside the housing 101.

[0064] In at least one embodiment, since an accommodation cavity is provided inside the housing 101 of the first busbar 1 and / or the second busbar 2, the first busbar 1 and / or the second busbar 2 can be cooled by the cooling medium, so that the temperature of the first busbar 1 and / or the second busbar 2 will not be too high and can be maintained within a relatively appropriate temperature range, thereby ensuring the continuous and stable operation of the busbar assembly accordingly.

[0065] Among them, the housing 101 can be a rectangular housing structure. Therefore, there is the accommodation cavity inside the housing 101, and the cooling medium can be filled into the accommodation cavity through the liquid injection port; the sealing sleeve 102 is sleeved outside the housing 101 to seal the housing 101 to effectively prevent the leakage of the cooling medium inside the housing 101.

[0066] The first busbar 1 and / or the second busbar 2 includes a housing 101 and a sealing sleeve 102. There are three solutions. The first is that a receiving cavity is provided only inside the first busbar 1. In this case, the first busbar 1 includes the housing 101 with the receiving cavity and the sealing sleeve 102. The second is that a receiving cavity is provided only inside the second busbar 2. In this case, the second busbar 2 includes the housing 101 with the receiving cavity and the sealing sleeve 102. The third is that the receiving cavities are provided in the first busbar 1 and the second busbar 2 respectively. In this case, both the first busbar 1 and the second busbar 2 include the housing 101 and the sealing sleeve 102.

[0067] Among them, the cooling medium can be cooling water, low-temperature gas, fluorinated liquid, etc. As long as the cooling medium can cool the busbar, it is applicable to this technical solution and will not be specifically limited here.

[0068] In addition, the sealing sleeve 102 is a sealed insulating sleeve. For example, a sealing sleeve made of polyvinyl chloride material can be used. As long as the sealing sleeve 102 can play an insulating and sealing role, it is applicable to this technical solution and will not be specifically limited here.

[0069] Figure 4 For Figure 1 the enlarged structural schematic diagram at position A in

[0070] In some embodiments, as shown in combination with Figure 4 the support structure 3 includes a first support member 31. The first support member 31 is installed on the side wall of the cabinet body 7 of the energy storage cabinet. The first support member 31 is provided with a mounting hole for the second busbar 2 to pass through.

[0071] In at least one embodiment, if the length of the first busbar 1 is smaller than the length of the cabinet body, taking the second busbar 2 passing through the side wall of the cabinet body as an example, by providing the first support member 31 on the side wall of the cabinet body 7, the second busbar 2 can pass through the mounting hole of the first support member 31 to extend out of the cabinet body 7. At this time, the first support member 31 can serve as a support for the second busbar 2 to extend out of the cabinet body 7. At this time, the first support member 31 not only plays a role in supporting and fixing the second busbar 2, but also can play an insulating role between the second busbar 2 and the cabinet body 7.

[0072] If the length of the first busbar 1 is larger than the length of the cabinet body, the first busbar 1 can pass through the side wall of the cabinet body through the mounting hole of the first support member 31.

[0073] Among them, the size of the mounting hole of the first support member 31 can be matched with the size of the second busbar 2, so that when the second busbar 2 passes through the mounting hole, the first support member 31 can play an effective limiting and fixing role on the second busbar 2.

[0074] Figure 5Schematic structural diagram of the first support member 31 according to some embodiments of the present application.

[0075] Further, in combination with Figure 5 as shown, the support structure 3 further includes a first fastener 32, and the first fastener 32 passes through the first support member 31 and the side wall of the cabinet 7.

[0076] In at least one embodiment, the first support member 31 can be fixedly installed on the side wall of the cabinet 7 through the first fastener 32. Specifically, the first fastener 32 can pass through the first support member 31 and the side wall of the cabinet 7 in sequence, so as to install the first support member 31 on the side wall of the cabinet 7.

[0077] Among them, the first fastener 32 can be a bolt fastener.

[0078] In some embodiments, in combination with Figure 5 as shown, the first support member 31 includes a first mounting seat 311, a second mounting seat 312 and a second fastener 313. The first mounting seat 311 and / or the second mounting seat 312 are provided with grooves. The first mounting seat 311 and the second mounting seat 312 are arranged along the extension direction perpendicular to the busbar assembly, and the grooves provided in the first mounting seat 311 and / or the second mounting seat 312 form the mounting hole. The first mounting seat 311 and the second mounting seat 312 are connected by the second fastener 313 to adjust the width of the mounting hole through the second fastener 313.

[0079] In at least one embodiment, the first support member 31 can fix the second busbar 2 in the following manner. For example, the second busbar 2 is passed through the mounting hole of the first mounting seat 311 and / or the second mounting seat 312, and then can be connected to the first mounting seat 311 and the second mounting seat 312 through the second fastener 313. Through the cooperation of the first mounting seat 311 and the second mounting seat 312, not only the clamping and fixing of the second busbar 2 are realized to prevent the second busbar 2 from generating displacement during installation and improve the installation efficiency, but also the size of the mounting hole is adjusted by adjusting the second fastener 313, and correspondingly, it is applicable to the fixed installation of second busbars 2 with different thicknesses, so as to provide the installation versatility for second busbars 2 with different thicknesses.

[0080] Among them, the second fastener 313 can be a bolt fastener. For example, the second fastener 313 passes through the first mounting seat 311 and the second mounting seat 312, so as to adjust the distance between the first mounting seat 311 and the second mounting seat 312 through the tightening and loosening of the second fastener 313, so as to realize the adjustable width of the mounting hole between the first mounting seat 311 and the second mounting seat 312, so as to be applicable to the fixing of busbars with different thicknesses.

[0081] In addition, the second fastener 313 can also be a snap structure. For example, the snap structure is rotatably mounted on the top wall (or bottom wall) of the first mounting seat 311. A plurality of clamping grooves arranged at intervals are provided on the second mounting seat 312. When fixing busbars of different thicknesses, the snap structure can be rotated so that the snap structure is selectively clamped in the clamping grooves at corresponding positions, thereby realizing adjustable width of the mounting hole between the first mounting seat 311 and the second mounting seat 312 to be applicable to fixing busbars of different thicknesses. Any fastener that can adjust the width of the mounting hole between the first mounting seat 311 and the second mounting seat 312 is applicable to this technical solution, and no specific limitation is made here.

[0082] Wherein, the first mounting seat 311 and / or the second mounting seat 312 being provided with the groove means that the groove can be only formed on the first mounting seat 311 (or the second mounting seat 312). At this time, the first mounting seat 311 (or the second mounting seat 312) can be a U-shaped structure, and the second mounting seat 312 (or the first mounting seat 311) is a plate-shaped structure. At this time, the U-shaped structure and the plate-shaped structure can enclose the mounting hole; or, grooves are formed on the opposite side walls of the first mounting seat 311 and the second mounting seat 312. At this time, both the first mounting seat 311 and the second mounting seat 312 can be U-shaped structures so that the grooves of the two mounting seats enclose to form the mounting hole. The second fastener 313 can be a bolt fastener.

[0083] Furthermore, the first mounting seat 311 and the second mounting seat 312 being arranged along the direction perpendicular to the extension direction of the busbar assembly means that the first mounting seat 311 and the second mounting seat 312 can be arranged along the front-back direction of the cabinet 7. For example, it can be parallel to the Figure 5 Y-axis direction in the coordinate system.

[0084] In some embodiments, as shown in Figure 5 the first support member 31 further includes a sealing ring 314. The sealing ring 314 is embedded in the mounting hole, and the sealing ring 314 is sleeved on the outer wall of the second busbar 2 corresponding to the accommodating cavity.

[0085] In at least one embodiment, the inside of the sealing ring 314 can be the mounting hole of the first support member 31. When the second busbar 2 passes through the sealing ring 314 and extends out of the cabinet 7, the sealing ring 314 is sleeved at the position of the outer wall of the second busbar 2 corresponding to the accommodating cavity. At this time, the sealing ring 314 can not only improve the sealing performance between the first support member 31 and the second busbar 2 to prevent external rainwater from entering the cabinet 7 from the connection between the two, but also clamp and fix the position of the second busbar 2 in the accommodating cavity to further improve the sealing performance of the second busbar 2 to prevent the leakage of the cooling medium inside it.

[0086] Among them, the sealing ring 314 can be a sealing strip made of silicone material. Since the silicone material has a soft physical property, it is conducive to the smooth threading of the second copper bar.

[0087] Figure 6 For Figure 1 the enlarged structural schematic diagram at position B in Figure 7 is one of the structural schematic diagrams of the busbar assembly according to some embodiments of the present application (i.e., the top view structural schematic diagram of the busbar assembly), Figure 8 and is the second structural schematic diagram of the busbar assembly according to some embodiments of the present application (i.e., the exploded structural schematic diagram of the busbar assembly).

[0088] In some embodiments, as shown in combination with Figures 6 to 8 the support structure 3 further includes a second support member 33. The second support member 33 includes a support base 331 and a gland 332. A groove is provided on the support base 331. The first busbar 1 is installed in the groove. The gland 332 is installed above the support base 331 and is connected to the support base 331. The top and bottom ends of the first busbar 1 are respectively connected to the gland 332 and the support base 331.

[0089] In at least one embodiment, the first busbar 1 can be supported and fixed by the second support member 33. Specifically, the first busbar 1 passes through the groove of the support base 331. At this time, the support base 331 supports the first busbar 1 from below. Subsequently, the gland 332 is installed at the top of the support base 331. At this time, the top and bottom ends of the first busbar 1 are respectively connected to the gland 332 and the support base 331, so that the gland 332 and the support base 331 support and fix the first busbar 1 from above and below respectively, so as to prevent the first busbar 1 from displacing during installation.

[0090] Among them, the support base 331 and the gland 332 can be fixed by bolt fasteners, and the support base 331 can be fixed to the top of the cabinet 7 by rivets or bolts. The groove of the support base 331 can match the thickness of the first busbar 1, so that when the first busbar 1 is installed on the support base 331, the first busbar 1 will not shake back and forth.

[0091] As shown in combination with Figure 7 and Figure 8 at least two second support members 33 are installed on the first busbar 1. Second busbars 2 are respectively connected to both ends of the first busbar 1 in the extending direction, and the second busbars 2 can be fixed to the side wall of the cabinet 7 by at least one first support member 31. Among them, both the first support member 31 and the second support member 33 are made of insulating materials to insulate the above-mentioned busbars from the cabinet, so as to reduce the occurrence of electric leakage accidents.

[0092] Figure 9Schematic diagram of a partial structure of an energy storage system according to some embodiments of the present application; Figure 10 is Figure 9 The enlarged structure diagram of the connection at position C (where two busbars are connected outside the cabinet) in

[0093] In some embodiments, in combination with Figure 9 and Figure 10 as shown, the busbar assembly further includes a third fastener 4. The ends of the first busbar 1 and the second busbar 2 are arranged along a direction perpendicular to the extension direction of the busbar assembly, and the third fastener 4 passes through the connection of the first busbar 1 and the second busbar 2.

[0094] In at least one embodiment, the first busbar 1 and the second busbar 2 can be connected in the following manner. For example, the opposite ends of the first busbar 1 and the second busbar 2 are arranged along a direction perpendicular to the extension direction of the busbar assembly, and then the third fastener 4 passes through the connection of the first busbar 1 and the second busbar 2, so as to fix the first busbar 1 and the second busbar 2.

[0095] Among them, the third fastener 4 can be a bolt fastener. The direction along the extension direction of the busbar assembly refers to the front-back direction, which can be parallel to the Figure 10 Y-axis direction in the coordinate system.

[0096] Figure 2 Schematic diagram of the first busbar 1 according to some embodiments of the present application to show the positional relationship between the first busbar 1 and the slot 51, Figure 11 is Figure 8 The enlarged structure diagram of the connection at position D in

[0097] In some embodiments, in combination with Figure 2 and Figure 11 as shown, a slot 51 is provided at the end of the first busbar 1 along the extension direction of the busbar assembly, and a plug 52 is provided at the end of the second busbar 2 along the extension direction of the busbar assembly. The plug 52 is inserted into the slot 51.

[0098] In at least one embodiment, the first busbar 1 and the second busbar 2 can also be connected in the following manner. A slot 51 is provided at the end of the first busbar 1 along its own extension direction (as shown in Figure 2 ), and a plug 52 is provided at the end of the second busbar 2 along its own extension direction, so that the second busbar 2 can be inserted into the slot 51 at the end of the first busbar 1 through the plug 52 to achieve the quick plug-in connection between the first busbar 1 and the second busbar 2.

[0099] Among them, the slot 51 can adopt the following structure. For example, a groove is formed at the end of the first bus bar 1 along its extending direction, or two plates arranged at intervals are integrally provided at the end of the first bus bar 1 along its extending direction, so that the end of the first bus bar 1 along its extending direction is basically in a U-shaped structure, and the insertion block 52 can be a block structure matching the U-shaped structure.

[0100] In some embodiments, as shown in Figure 11 the inner wall of the slot 51 is provided with a limiting slot 53, and the outer wall of the insertion block 52 is provided with a limiting protrusion 54, and the limiting protrusion 54 is clamped with the limiting slot 53.

[0101] In at least one embodiment, the first bus bar 1 and the second bus bar 2 can be fastened in the following manner. For example, a limiting slot 53 is formed on at least one inner side wall of the slot 51, and a limiting protrusion 54 matching the limiting slot 53 is provided on at least one outer wall of the insertion block 52. After the second bus bar 2 is inserted into the slot 51 at the end of the first bus bar 1 through the insertion block 52, the limiting protrusion 54 is clamped in the limiting slot 53, so as to enhance the stability of the insertion operation of the insertion block 52 and the slot 51, and correspondingly avoid the displacement of the first bus bar 1 relative to the second bus bar 2 in the extending direction of the bus bar assembly.

[0102] Among them, the limiting protrusion 54 can be a convex rib structure with a triangular, rectangular or other shaped end face, such as the top end face, and the limiting slot 53 can be a groove structure with a triangular, rectangular or other shaped end face.

[0103] Figure 12 It is a schematic diagram of a partial structure of a bus bar assembly according to some embodiments of the present application.

[0104] In some embodiments, as shown in Figure 12 the bus bar assembly further includes a clamping structure 6, and at least part of the clamping structure 6 is sleeved on the insertion part of the insertion block 52 and the slot 51.

[0105] In at least one embodiment, the first bus bar 1 and the second bus bar 2 can be fastened in the following manner. For example, after the second bus bar 2 is inserted into the slot 51 at the end of the first bus bar 1 through the insertion block 52, the outside of the insertion part of the insertion block 52 and the slot 51 can be sleeved with the clamping structure 6, so as to enhance the stability of the insertion operation of the insertion block 52 and the slot 51 from the circumferential direction through the clamping structure 6, and correspondingly avoid the displacement of the first bus bar 1 relative to the second bus bar 2 in the extending direction.

[0106] Among them, the clamping structure 6 can adopt the structure of the first support member 31, a hoop structure or other structures that can clamp the insertion part of the insertion block 52 and the slot 51, and no specific limitation is made here.

[0107] The implementation principle of one or more embodiments of the present application is as follows: The first busbar 1 can be installed in the cabinet 7 through the second support member 33. After one end of the second busbar 2 is docked and firmly connected to the first busbar 1, the other end of the second busbar 2 can pass through the mounting hole of the first support member 31 to install the busbar assembly in the cabinet 7.

[0108] Figure 13 It is one of the structural schematic diagrams of the energy storage system according to some embodiments of the present application. Figure 14 It is Figure 13 The enlarged structural schematic diagram at position E in

[0109] One or more embodiments of the present application also disclose an energy storage system.

[0110] Referring to Figure 13 and Figure 14 , the energy storage system includes a busbar assembly and also includes an energy storage cabinet. The energy storage cabinet includes a cabinet 7 and a battery cluster 8. The battery cluster 8 is installed in the cabinet 7. The battery cluster 8 is electrically connected to the first busbar 1 of the busbar assembly. A first groove 71 is provided inside the cabinet 7. The first busbar 1 is installed in the first groove 71. A through hole 72 is provided on the side wall of the cabinet 7. The first busbar 1 and / or the second busbar 2 pass through the through hole 72.

[0111] In at least one embodiment, the battery cluster 8 can be installed in the cabinet 7. The output power line of the battery cluster 8 can be electrically connected to the first busbar 1. The first busbar 1 can be installed in the first groove 71 opened inside the cabinet 7. Therefore, the first groove 71 provides an installation space for the first busbar 1. A through hole 72 is opened on the side wall of the cabinet 7, and the first support member 31 in the busbar assembly can be installed in the through hole 72 so that at least one end of the first busbar 1 and the second busbar 2 can be fixedly installed on the side wall of the cabinet 7 through the first support member 31. The energy storage system can include multiple energy storage cabinets and multiple busbar assemblies. The number of energy storage cabinets matches the number of busbar assemblies. Therefore, the busbar assembly can not only serve as the DC bus of the battery cluster but also be used to connect the busbar assemblies of adjacent energy storage cabinets.

[0112] Figure 17 It is the structural schematic diagram of the top view state of two energy storage cabinets in parallel connection.

[0113] Among them, when the cabinets of two energy storage cabinets are in the parallel connection operation, the two cabinets 7 are arranged adjacent to each other. The first busbar 1 is inside the cabinet 7. One end of the second busbar 2 is connected to the first busbar 1, and the other end extends out of the cabinet 7 after passing through the through hole 72 on the side wall of the cabinet 7 to facilitate connection with the corresponding busbars of other adjacent cabinets 7.

[0114] Figure 15 It is the second structural schematic diagram of the energy storage system according to some embodiments of the present application. Figure 16Explosion structural schematic diagram of a partial busbar assembly, a cabinet body, and a telescopic sleeve according to some embodiments of the present application.

[0115] In some embodiments, in combination with Figures 14 to 16 As shown, the energy storage system further includes a telescopic sleeve 9. A second groove 73 is provided at a position corresponding to the outer side wall of the cabinet body 7 and the first busbar 1 or the second busbar 2. The telescopic sleeve 9 is installed at the second groove 73 of two adjacent cabinet bodies 7, and the second busbar 2 is located inside the telescopic sleeve 9.

[0116] In at least one embodiment, a second groove 73 is formed at a position corresponding to the top end of the side wall of the cabinet body 7 and the first busbar 1 or the second busbar 2. When parallel connection operation is performed on two adjacent cabinet bodies 7 in the energy storage system, the end of the telescopic sleeve 9 can be installed at the second groove 73 and sleeved outside the second busbar 2, so that the second groove 73 provides an installation space for the connection of the telescopic sleeve 9, the second busbar 2, and the first busbar 1, which is beneficial to the operation of the staff. Moreover, the second groove 73 can make the side wall of the cabinet body 7 have no obvious protruding parts, so as to reduce the damage of the energy storage cabinet during transportation and installation.

[0117] In addition, the telescopic sleeve 9 is sleeved outside the second busbar 2, which not only provides insulation protection for the second busbar 2 by the telescopic sleeve 9, but also uses the physical properties of the telescopic sleeve 9 that can be telescoped and slightly rotated to solve the installation error in the parallel connection operation of the cabinet bodies 7 of adjacent energy storage cabinets.

[0118] In some embodiments, in combination with Figure 16 As shown, a third groove 74 is further provided at a position corresponding to the outer side wall of the cabinet body 7 and the telescopic sleeve 9. The third groove 74 is located inside the second groove 73, and the end of the telescopic sleeve 9 is embedded in the third groove 74.

[0119] In at least one embodiment, since the third groove 74 is located inside the second groove 73, in other words, the third groove 74 is closer to the central area of the cabinet body 7 relative to the second groove 73. When the telescopic sleeve 9 is installed at the third groove 74, the end of the telescopic sleeve 9 extends into the third groove 74. At this time, the inner wall of the second groove 73 can have a certain shielding effect on the telescopic sleeve 9, so as to effectively block rainwater and prevent rainwater from directly entering the cabinet body 7 from the connection part of the telescopic sleeve 9 and the third groove 74.

[0120] In some embodiments, in combination with Figure 14 As shown, the bottom wall of the second groove 73 slopes downward from the end close to the cabinet body 7 to the end far from the cabinet body 7.

[0121] In at least one embodiment, since the bottom wall of the second groove 73 slopes downward from the end close to the cabinet body 7 to the end far from the cabinet body 7, in other words, the bottom wall of the second groove 73 has an inclined surface that slopes outward, so that when the energy storage system is installed outdoors, rainwater can be discharged along the inclined surface of the bottom wall of the second groove 73 when it enters the area of the second groove 73, to avoid the storage of rainwater in the second groove 73, and correspondingly avoid the excessive accumulation of rainwater in the second groove 73 from entering the cabinet body 7 at the connection between the second groove 73 and the first support member 31.

[0122] In some embodiments, as shown in Figure 9 the first groove 71 is provided at the top of the cabinet body 7, and the first busbar 1 is located in the first groove 71.

[0123] In at least one embodiment, the first groove 71 is at the top end of the side wall of the cabinet body 7, so that the first busbar 1 is installed at the inner top of the cabinet body 7, and correspondingly, the second busbar 2 connected to the first busbar 1 is also at the top of the cabinet body, thereby reducing the safety risk of electric shock when a staff member accidentally enters the cabinet and touches the busbar assembly, and correspondingly improving the safety.

[0124] The foregoing has described the basic principles, main features and advantages of the present application. Those skilled in the art of this industry should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A busbar assembly, characterized in that: It includes a supporting structure, a first busbar and a second busbar, wherein the first busbar and the second busbar are arranged along the extension direction of the busbar assembly, and the first busbar and the second busbar are detachably connected; the supporting structure is used to be installed on the energy storage cabinet, and the supporting structure is sleeved outside at least part of the first busbar and / or the second busbar, and is used to support the first busbar and / or the second busbar, at least part of the first busbar is in the energy storage cabinet, and adjacent two first busbars corresponding to adjacent energy storage cabinets are connected through the second busbar, and the first busbar extends horizontally and the larger surface of the first busbar is arranged vertically.

2. The busbar assembly according to claim 1, characterized in that: The first busbar and / or the second busbar comprises a shell and a sealing sleeve. The shell is provided with a containing cavity inside, the inside of the containing cavity is used to contain cooling medium, the shell is provided with a liquid injection port connected with the containing cavity, and the sealing sleeve is mounted outside the shell.

3. The busbar assembly according to claim 2, characterized in that: The support structure includes a first support member, which is installed on a side wall of a cabinet body of the energy storage cabinet. The first support member is provided with a mounting hole for the second busbar to pass through.

4. The busbar assembly according to claim 3, characterized in that: The first support member includes a first mounting seat, a second mounting seat and a second fastener, the first mounting seat and / or the second mounting seat is provided with a groove, the first mounting seat and the second mounting seat are arranged in an extension direction perpendicular to the busbar assembly, and the grooves provided on the first mounting seat and / or the second mounting seat constitute the mounting hole, the first mounting seat and the second mounting seat are connected by the second fastener so that the width of the mounting hole can be adjusted by the second fastener.

5. The busbar assembly according to claim 4, characterized in that: The first support member further includes a sealing ring, which is embedded in the mounting hole and sleeved on an outer wall of the second busbar corresponding to the accommodating cavity.

6. The busbar assembly according to claim 2, characterized in that: The support structure also includes a second support member, which includes a support seat and a pressure cover. The support seat is provided with a groove, the first busbar is installed in the groove, the pressure cover is installed above the support seat and connected to the support seat, and the top and bottom ends of the first busbar are respectively connected to the pressure cover and the support seat.

7. The busbar assembly according to any one of claims 1 to 6, characterized in that: It also includes a third fastener. The ends of the first busbar and the second busbar are arranged in an arrangement perpendicular to the extension direction of the busbar assembly. The third fastener is passed through the connection between the first busbar and the second busbar.

8. The busbar assembly according to any one of claims 1 to 6, characterized in that: A slot is provided at the end of the first busbar along the extension direction of the busbar assembly, and an insert block is provided at the end of the second busbar along the extension direction of the busbar assembly, and the insert block is plugged into the slot.

9. The busbar assembly according to claim 8, characterized in that: The inner wall of the slot is provided with a limiting slot, and the outer wall of the insert block is provided with a limiting protrusion, and the limiting protrusion is engaged with the limiting slot.

10. The busbar assembly according to claim 8, characterized in that: It also includes a clamping structure, at least part of which is sleeved on the insertion point between the inserting block and the slot.

11. An energy storage system, characterized in that: The busbar assembly comprises a busbar assembly as claimed in any one of claims 1 to 10, and further comprises an energy storage cabinet, wherein the energy storage cabinet comprises a cabinet body and a battery cluster, wherein the battery cluster is installed in the cabinet body, and the battery cluster is electrically connected to a first busbar of the busbar assembly, wherein a first groove is provided inside the cabinet body, and the first busbar is installed in the first groove, and a side wall of the cabinet body is provided with a through hole, and the first busbar and / or the second busbar is penetrated through the through hole.

12. The energy storage system according to claim 11, characterized in that: It also includes a telescopic sleeve. A second groove is provided at a position corresponding to the first busbar or the second busbar on the outer wall of the cabinet. The telescopic sleeve is installed in the second grooves of two adjacent cabinets, and the second busbar is located in the telescopic sleeve.

13. The energy storage system according to claim 12, characterized in that: A third groove is further provided at a position corresponding to the telescopic sleeve and on the outer wall of the cabinet. The third groove is located inside the second groove, and the end of the telescopic sleeve is embedded in the third groove.

14. The energy storage system according to claim 12, characterized in that: The bottom wall of the second groove is inclined downward from an end close to the cabinet to an end away from the cabinet.

15. The energy storage system according to claim 11, characterized in that: The first groove is arranged on the top of the cabinet, and the first busbar is located in the first groove.

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