Energy storage system

Abstract

The utility model discloses an energy storage system. The energy storage system comprises a box body, a plurality of battery clusters, a control device and a plurality of high-voltage boxes. The box body is provided with a containing cavity. And the plurality of battery clusters are arranged in the accommodating cavity. The control device is used for managing the plurality of battery clusters. The high-voltage boxes are installed in the containing cavity and electrically connected with the battery clusters respectively, each high-voltage box is provided with a first bus line and a second bus line, at least one of the first bus line and the second bus line is provided with a connector, and the connector is used for being in butt joint with a connecting piece of control equipment so as to electrically connect the high-voltage boxes with the control equipment.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to an energy storage system. Background Art

[0002] An energy storage system is a system that can store energy and release it when needed. The energy storage system includes a convergence device, a high-voltage control box, and a plurality of battery clusters electrically connected to the high-voltage control box. The convergence device can be electrically connected to the high-voltage control box and output the electrical energy of the plurality of battery clusters to a control device (such as an energy storage inverter, etc.) through the high-voltage control box. In the related art, the convergence device includes a convergence copper bus, and a wiring nose is provided on the cable led out from the high-voltage control box, and the wiring nose needs to be connected and fixed to the convergence copper bus by fasteners (such as bolts, etc.). The operation steps are cumbersome, and the assembly efficiency of the energy storage system is low. In addition, the setting of the convergence device will also cause the structure of the energy storage system to be more complicated, occupy a large space, and have high costs. Utility Model Content

[0003] In view of the above problems, the present application provides an energy storage system that can solve the problems of complicated operation steps for electrically connecting the high-voltage box with the control device, low assembly efficiency of the energy storage system, and complex structure, large space occupation and high cost of the energy storage system.

[0004] The present application provides an energy storage system. The energy storage system includes a box, a plurality of battery clusters, a control device and a plurality of high-voltage boxes. The box is provided with a storage cavity. The plurality of battery clusters are installed in the storage cavity. The control device is used to manage the plurality of battery clusters. The plurality of high-voltage boxes are installed in the storage cavity and are electrically connected to the plurality of battery clusters respectively, each of the high-voltage boxes is provided with a first bus bar and a second bus bar, at least one of the first bus bar and the second bus bar is provided with a connector, and the connector is used to dock with a connector of the control device to electrically connect the high-voltage box with the control device.

[0005] In the above technical solution, each high-voltage box is provided with a first bus bar and a second bus bar, at least one of the first bus bar and the second bus bar is provided with a connector, and the connector is used to dock with a connector of a control device to electrically connect the high-voltage box with the control device, without setting a bus device in the traditional sense, thereby simplifying the structure of the energy storage system, thereby reducing the space occupied by the energy storage system and reducing costs; and the connector can be directly docked with the connector, making the electrical connection operation between the high-voltage box and the control device easier, that is, simplifying the operating steps of the electrical connection between the high-voltage box and the control device, thereby improving the assembly efficiency of the energy storage system.

[0006] As an optional technical solution of the present application, the energy storage system further includes a mounting member, the mounting member is mounted on the box body, and the connector is installed through the mounting member.

[0007] In the above technical solution, the connector can be installed through the mounting piece, so that the connector is fixed in the box. Compared with the energy storage system without a mounting piece, the position of the connector is more concentrated, which facilitates the docking of the connector and the connecting piece and improves the assembly efficiency. In addition, the setting of the mounting piece can also make the first bus bar and the second bus bar arranged in an orderly manner around the high-voltage box, which is convenient for the management and maintenance of the first bus bar and the second bus bar, reduces safety hazards (such as preventing users from tripping, etc.), and improves the integrity and stability of the energy storage system.

[0008] As an optional technical solution of the present application, the connector is provided with a fixing piece, the fixing piece is connected to the mounting piece, and the fixing piece is used to mount the connector on the mounting piece. The fixing piece and the connector are an integrally formed structure.

[0009] In the above technical solution, the fixing member and the connector are integrally formed, and the fixing member is used to install the connector on the mounting member, thereby improving the connection strength between the connector and the mounting member, preventing the connector from loosening or falling off, and ensuring the stability of the connection between the connector and the connecting member. In addition, the integrally formed structure can also reduce the number of parts, simplify the installation steps, and improve assembly efficiency.

[0010] As an optional technical solution of the present application, the connector is provided with a fixing piece, the fixing piece is connected to the mounting piece, and the fixing piece is used to mount the connector on the mounting piece. The fixing piece and the connector are separately formed structures, and the fixing piece is fixedly connected to the connector.

[0011] In the above technical solution, the fixing part and the connector are separately formed, the fixing part is fixedly connected to the connector, and the fixing part is used to install the connector on the mounting part, thereby improving the connection strength between the connector and the mounting part, preventing the connector from loosening or falling off, and ensuring the stability of the connection between the connector and the connecting part. In addition, the structure of separate molding can also facilitate the installation and removal of the connector and the mounting part.

[0012] As an optional technical solution of the present application, the connector includes a first connector and a second connector, the first connector is electrically connected to the first bus bar, and the second connector is electrically connected to the second bus bar. The mounting member includes a first mounting plate and a second mounting plate connected to each other, the first mounting plate includes a first mounting surface, the first connector is installed through the first mounting plate and protrudes from the first mounting surface, the second mounting plate includes a second mounting surface, the second connector is installed through the second mounting plate and protrudes from the second mounting surface, and the first mounting surface and the second mounting surface are not coplanar.

[0013] In the above technical solution, the first connector is installed on the first mounting plate, and the second connector is installed on the second mounting plate. This makes it easy to manage and maintain each connector, ensuring the normal operation of the first connector and the second connector. On the other hand, it makes it easy to distinguish the connectors when the connectors are connected, preventing confusion between the connectors and the connectors, and ensuring the normal operation of the energy storage system. In addition, the first mounting surface and the second mounting surface are not coplanar, which can avoid safety hazards such as current short circuits caused by the opposite directions of the currents transmitted in the first connector and the second connector, thereby improving the safety of the energy storage system.

[0014] As an optional technical solution of the present application, the connector includes a first connector and a second connector, the first connector is electrically connected to the first bus bar, and the second connector is electrically connected to the second bus bar; the first bus bar and the second bus bar extend along a first direction, the first connector includes a plurality of first connectors, and the plurality of first connectors are arranged at intervals in the second direction, the second connector includes a plurality of second connectors, and the second direction is perpendicular to the first direction; in a third direction perpendicular to the first direction and the second direction, the plurality of first connectors and the plurality of second connectors are staggered.

[0015] In the above technical solution, multiple first connectors and multiple second connectors are staggered. On the one hand, the first bus bars and the second bus bars can be arranged alternately to save space and facilitate the miniaturization of the energy storage system. On the other hand, interference between the connectors and the connectors during electrical connection can be prevented to ensure the stability of the electrical connection between the high-voltage box and the control device.

[0016] As an optional technical solution of the present application, projections of a plurality of the first connectors toward the third direction and projections of a plurality of the second connectors toward the third direction are arranged alternately in sequence.

[0017] In the above technical solution, the projections of the plurality of first connectors and the plurality of second connectors in the third direction are arranged alternately in sequence. This can, on the one hand, enable the first bus bars and the second bus bars to be arranged alternately, saving space and being conducive to the miniaturization of the energy storage system; on the other hand, it can prevent interference between the connectors and the connecting parts when they are electrically connected, thereby ensuring the stability of the electrical connection between the high-voltage box and the control device.

[0018] As an optional technical solution of the present application, the mounting member further includes a connecting portion, which is connected to the box. The connecting portion protrudes and extends from the side edge of the first mounting plate in a direction away from the first mounting plate; and / or the connecting portion protrudes and extends from the side edge of the second mounting plate in a direction away from the second mounting plate.

[0019] In the above technical solution, the mounting piece is connected to the box body by the connecting portion, so that the connector can be installed on the first mounting plate and the second mounting plate, that is, the connector can be fixedly installed on the box body, which is convenient for the docking of the connector and the connecting piece and improves the assembly efficiency. Moreover, the connecting portion on the first mounting plate and / or the second mounting plate can be connected to the box body, which improves the stability and reliability of the mounting piece installed on the box body.

[0020] As an optional technical solution of the present application, the mounting member also includes a folding portion, which bends and extends from the periphery of the first mounting plate toward a direction away from the first mounting plate; and / or the folding portion bends and extends from the periphery of the second mounting plate toward a direction away from the second mounting plate.

[0021] In the above technical solution, a folding portion is provided on the first mounting plate and / or the second mounting plate of the mounting member, so as to improve the structural strength of the first mounting plate and / or the second mounting plate, that is, to improve the upper limit of the load that the first mounting plate and / or the second mounting plate can withstand, ensure the docking of the connecting member and the connector, and improve the stability of the electrical connection between the high-voltage box and the control device.

[0022] As an optional technical solution of the present application, the control device includes an energy storage converter, and the energy storage converter is independently arranged outside the box.

[0023] In the above technical solution, the energy storage inverter is independently arranged outside the box, which can facilitate the upgrade and maintenance of the energy storage inverter without affecting the normal operation of the high-voltage box and the battery cluster; on the other hand, it can facilitate the expansion of the energy storage inverter, thereby improving the adaptability of the energy storage inverter.

[0024] As an optional technical solution of the present application, the control device includes an energy storage inverter, and the energy storage inverter is integrated in the box.

[0025] In the above technical solution, the energy storage inverter is integrated in the box, which can reduce the space occupied by the energy storage inverter on the one hand, making the layout of the entire energy storage system more compact, which is conducive to the miniaturization of the energy storage system; on the other hand, it can shorten the distance between the energy storage inverter and the high-voltage box, reduce the loss of electric energy during transmission, and improve the overall efficiency.

[0026] As an optional technical solution of the present application, the energy storage inverter includes a first connecting wire electrically connected to the first bus bar and a second connecting wire electrically connected to the second bus bar, and at least one of the first connecting wire and the second connecting wire is provided with a connecting piece, and the connecting piece is used to adapt and plug with the connector.

[0027] In the above technical solution, the connecting piece can be directly adapted and plugged with the connector so that the first connecting line is electrically connected to the first bus bar, and the second connecting line is electrically connected to the second bus bar, thereby simplifying the electrical connection operation between the high-voltage box and the control device, that is, simplifying the operating steps of the electrical connection between the high-voltage box and the control device, and improving the assembly efficiency of the energy storage system.

[0028] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0030] Figure 1 A three-dimensional schematic diagram of an energy storage system according to certain embodiments of the present application;

[0031] Figure 2 for Figure 1 A three-dimensional schematic diagram of a part of the structure of the energy storage system shown;

[0032] Figure 3 for Figure 2 An enlarged schematic diagram of point III in the energy storage system shown;

[0033] Figure 4 for Figure 2 A three-dimensional schematic diagram of the mounting parts in the energy storage system shown.

[0034] The reference numerals in the specific implementation manner are as follows:

[0035] Energy storage system 100; first direction A; second direction B; third direction C; length direction X; width direction Y; height direction Z;

[0036] Box body 10, accommodating cavity 11, beam column 13, box body plate 15;

[0037] Battery cluster 20, battery module 21, first cable 23, second cable 25, third cable 27;

[0038] High voltage box 30, first bus bar 31, second bus bar 33, connector 35, first connector 351, second connector 353;

[0039] Energy storage converter 40, first connecting line 41, second connecting line 43, connecting member 45, first connecting member 451, second connecting member 453;

[0040] The mounting member 50, the first mounting plate 51, the first mounting surface 511, the second mounting plate 53, the second mounting surface 531, the mounting hole 55, the connecting portion 57, and the folding portion 59;

[0041] Fixing member 60. DETAILED DESCRIPTION

[0042] The following detailed description of the implementation of the technical solution of the present application is provided in conjunction with the accompanying drawings. The following implementation is only used to more clearly illustrate the technical solution of the present application, and is therefore only used as an example, and cannot be used to limit the scope of protection of the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific implementation methods and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0044] In the description of the implementation methods of this application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the implementation methods of this application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0045] Reference to "embodiment" herein 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 herein may be combined with other embodiments.

[0046] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. 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 article generally indicates that the associated objects before and after are in an "or" relationship.

[0047] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0048] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0049] In the description of the implementation methods of the present application, unless otherwise clearly stipulated and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.

[0050] Please also read Figure 1 and Figure 2, which is an energy storage system 100 of some embodiments of the present application. The energy storage system 100 includes a housing 10, a plurality of battery clusters 20, a control device and a plurality of high-voltage boxes 30. The housing 10 is provided with a housing chamber 11. The plurality of battery clusters 20 are installed in the housing chamber 11. The control device is used to manage the plurality of battery clusters 20. The plurality of high-voltage boxes 30 are installed in the housing chamber 11 and are electrically connected to the plurality of battery clusters 20, respectively. Each high-voltage box 30 is provided with a first bus bar 31 and a second bus bar 33. At least one of the first bus bar 31 and the second bus bar 33 is provided with a connector 35. The connector 35 is used to dock with a connector 45 of the control device to electrically connect the high-voltage box 30 with the control device.

[0051] The energy storage system 100 may be a battery energy storage system. The energy storage system 100 may be applied to power systems to achieve demand-side management, peak load shaving and valley filling, and rapid adjustment of grid frequency, thereby improving the stability and reliability of grid operation and reducing the impact of photovoltaic or wind power and other new energy power generation systems with large instantaneous changes on the grid.

[0052] The box 10 is a structure in the energy storage system 100 that can accommodate and protect devices such as the battery cluster 20 and the high-voltage box 20. The cross-sectional shape of the box 10 includes but is not limited to circular, square, triangular or oval. The material of the box 10 includes but is not limited to plastic, aluminum alloy, steel or carbon fiber composite material. For example, the material of the box 10 is aluminum alloy, which can ensure the rigidity of the box 10 while making the box 10 lighter and easier to transport. In the embodiment of the present application, the cross-sectional shape of the box 10 is rectangular.

[0053] Further, in some embodiments, the box body 10 includes a beam column 13 and a box body plate 15, and the beam column 13 and the box body plate 15 are connected to form a receiving cavity 11 together, and a plurality of battery clusters 20 can be arranged and installed in the receiving cavity 11 along the length direction X of the box body 10. The connection between the beam column 13 and the box body plate 15 can be a detachable connection or a non-detachable connection, and the detachable connection includes but is not limited to a screw connection, a snap connection, or a combination of a screw connection and a snap connection. The non-detachable connection includes but is not limited to a gluing connection, welding, or a combination of a gluing connection and welding.

[0054] The beam column 13 is a frame structure that plays a supporting and connecting role in the box body 10. The beam column 13 can be a strip-shaped, plate-shaped or a combination of the two. In the embodiment of the present application, the beam column 13 includes a plurality of connected beams and columns, the extension direction of a part of the plurality of beams is the same as the length direction X of the box body 10, the extension direction of another part of the plurality of beams is the same as the width direction Y of the box body 10, and the extension direction of the plurality of columns is the same as the height direction Z of the box body 10. Specifically, the plurality of beams and the plurality of columns are connected and can form a frame structure with a cavity, and the cross-sectional shape of the cavity is rectangular.

[0055] The box plate 15 is a generally flat plate structure. In the embodiment of the present application, the box plate 15 includes a top plate, a side plate and a bottom plate, the top plate is connected to the top of the frame structure formed by the beams and columns 13, the side wall is connected to the side of the frame structure formed by the beams and columns 13, and the bottom plate is connected to the bottom of the frame structure formed by the beams and columns 13, thereby, the box plate 15 can close the cavity formed by the beams and columns 13, and the box plate 15 can enclose the accommodating cavity 11 together with the beams and columns 13, specifically, the connection method between the box plate 15 and the screws includes but is not limited to screw connection, welding, or a combination of screw connection and welding.

[0056] The battery cluster 20 is a collection of multiple energy storage battery modules 21, which can achieve energy storage and release by connecting and controlling the battery cells in the battery module 21. In the embodiment of the present application, the cross-sectional shape of the battery cluster 20 is roughly rectangular, wherein the battery cluster 20 and the box 10 can have roughly the same width and height, which can facilitate the installation and storage of the battery cluster 20 in the box 10 and improve the space utilization rate. The functions of the battery cluster 20 include but are not limited to energy storage, energy scheduling and energy storage power station. Specifically, in some applications, the battery cluster 20 can convert electrical energy into chemical energy for storage to meet the electricity demand during the peak period of energy demand, thereby playing the role of energy storage. In other applications, the battery cluster 20 can flexibly adjust the supply and demand of electrical energy, achieve energy balance and scheduling, improve energy utilization, and thus play the role of energy scheduling. In some other applications, the battery cluster 20 can form an energy storage power station to store and dispatch energy on a large scale, provide reliable energy supply, and thus play the role of energy storage power station.

[0057] The battery module 21 is composed of a plurality of energy storage battery cells, and is a module that can store and release electrical energy. In the battery module 21, there are a plurality of battery cells, and the plurality of battery cells can be connected in series, in parallel, or in mixed connection. Mixed connection means that the plurality of battery cells are connected in series and in parallel. The plurality of battery cells can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the plurality of battery cells is accommodated in a carrier. The battery module 21 may also include other structures. For example, the battery module 21 may also include a confluence component for realizing electrical connection between the plurality of battery cells. It is understandable that the number of battery modules 21 in the battery cluster 20 can be adaptively adjusted according to the application scenario and capacity of the battery cluster 20.

[0058] In addition, a plurality of battery modules 21 can be stacked in the accommodating cavity 11 along the height direction Z of the box body 10, and the battery cluster 20 is provided with a plurality of first cables 23, which can connect the plurality of battery modules 21 in series and form the battery cluster 20 together. The battery cluster 20 is also provided with a second cable 25 and a third cable 27, one end of the second cable 25 is electrically connected to the positive electrode total connection terminal formed by connecting the plurality of battery modules 21 in series, and the other end is electrically connected to the high-voltage box 30, and one end of the third cable 27 is electrically connected to the negative electrode total connection terminal formed by connecting the plurality of battery modules 21 in series, and the other end is electrically connected to the high-voltage box 30, so that the electric energy of the battery cluster 20 can be transmitted to the outside through the high-voltage box 30; or the external electric energy can be transmitted to the battery cluster 20 through the high-voltage box 30.

[0059] The control device is a device used to manage the battery cluster 20 in the energy storage system 100. The functions of the control device include but are not limited to managing the charging and discharging of the battery cluster 20, managing and optimizing the energy use of the battery cluster 20, and monitoring the voltage, current, temperature and other parameters of the battery cluster 20. The setting of the control device can effectively manage and protect the operation of the battery cluster 20, and ensure the stability and reliability of the operation of the energy storage system 100.

[0060] The high-voltage box 30 is a device for monitoring, regulating and protecting the battery cluster 20. The high-voltage box 30 can be electrically connected to the battery cluster 20 to ensure the stability and safety of the battery cluster 20. The high-voltage box 30 includes a circuit breaker, a relay, an isolating switch, a Hall sensor and a fuse. The functions of the high-voltage box 30 include but are not limited to voltage and current acquisition, temperature acquisition, overload protection and short-circuit protection. Specifically, in some applications, the high-voltage box 30 can use the battery management system to collect information such as the voltage, current and temperature of the battery cluster 20, and send the collected information data to the energy management system, and the battery management system can receive the instructions sent by the energy management system. When the energy management system determines that the battery cluster 20 is abnormal according to the information data sent by the battery management system, the management system can send instructions to the battery management system. After receiving the instructions, the battery management system controls the on and off of the relay according to the instruction information to achieve control of the charging and discharging of the battery cluster 20.

[0061] In addition, the high-voltage box 30 includes a plurality of high-voltage boxes, wherein the high-voltage box 30 can be one-to-one with the battery cluster 20, or one-to-many, that is, one high-voltage box 30 is electrically connected to one battery cluster 20, or one high-voltage box 30 is electrically connected to multiple battery clusters 20. In the embodiment of the present application, the high-voltage box 30 is electrically connected to the battery clusters 20 in a one-to-one correspondence, so that the performance of each battery cluster 20 can be detected by the corresponding high-voltage box 30, which is convenient for the maintenance of the battery cluster 20. In one example, the high-voltage box 30 can be arranged on the upper side of the corresponding battery cluster 20 (such as Figure 1In another example, the high voltage box 30 may be disposed at the lower side of the corresponding battery cluster 20 (eg, Figure 1 In another example, the high voltage box 30 may be disposed in the middle of the corresponding battery cluster 20 (eg, Figure 1 The middle battery cluster 20 is between the uppermost and lowermost parts in the height direction Z of the housing 10).

[0062] The first bus bar 31 and the second bus bar 33 are components for transmitting electric energy. In the embodiment of the present application, the first bus bar 31 and the second bus bar 33 can converge the electric energy transmitted from multiple battery modules 21 (battery cluster 20) to the high-voltage box 30, and transmit the converged electric energy to the control device electrically connected to the high-voltage box 30. Specifically, the high-voltage box 30 is provided with a first interface and a second interface, one end of the first bus bar 31 is electrically connected to the first interface, and the other end can be connected to the positive terminal of the control device, one end of the second bus bar 33 is electrically connected to the second interface, and the other end can be connected to the negative terminal of the control device, thereby, the high-voltage box 30 can be electrically connected to the control device through the first bus bar 31 and the second bus bar 33.

[0063] The connector 35 is a component that can connect or disconnect an electrical circuit. The connector 35 includes, but is not limited to, quick-plug connectors such as terminal connectors and socket connectors. In one embodiment, the connector 35 is separately arranged from the first bus bar 31, that is, the connector 35 and the first bus bar 31 are two different structures. In this case, the first bus bar 31 can be connected to the connector 35 by means of crimping or welding; accordingly, the connector 35 is separately arranged from the second bus bar 33, that is, the connector 35 and the second bus bar 33 are two different structures. In this case, the second bus bar 33 can be connected to the connector 35 by means of crimping or welding. In another embodiment, the connector 35 and the first bus bar 31 are integrally formed, that is, the connector 35 and the first bus bar 31 are an integral structure, thereby improving the stability and reliability of the connection between the connector 35 and the first bus bar 31; accordingly, the connector 35 and the second bus bar 33 are integrally formed, that is, the connector 35 and the second bus bar 33 are an integral structure, thereby improving the stability and reliability of the connection between the connector 35 and the second bus bar 33.

[0064] In the energy storage system 100 of the present application, each high-voltage box 30 is provided with a first bus bar 31 and a second bus bar 33, and at least one of the first bus bar 31 and the second bus bar 33 is provided with a connector 35, and the connector 35 is used to dock with the connector 45 of the control device to electrically connect the high-voltage box 30 with the control device, without setting a bus device in the traditional sense, thereby simplifying the structure of the energy storage system 100, thereby reducing the space occupied by the energy storage system 100 and reducing the cost; and the connector 35 can be directly docked with the connector 45, so that the electrical connection operation between the high-voltage box 30 and the control device is simpler, that is, the operating steps of the electrical connection between the high-voltage box 30 and the control device are simplified, and the assembly efficiency of the energy storage system 100 is improved.

[0065] See also Figures 1 to 3 In some embodiments, the energy storage system 100 further includes a mounting member 50 , the mounting member 50 is mounted on the box body 10 , and the connector 35 is installed through the mounting member 50 .

[0066] The mounting member 50 is a structure that plays a role in installation and fixing in the energy storage system 100. The mounting member 50 is roughly a plate-like structure, and the connector 35 can be installed on the mounting member 50, so that the mounting member 50 can support and limit the connector 35, so that the electrical connection between the connector 35 and the connector 45 is more stable. In one example, the mounting member 50 can be connected to at least one of the beam column 13 and the box body 10 in a detachable or non-detachable connection manner. Among them, the detachable connection includes but is not limited to a screw connection, a snap connection, or a combination of a screw connection and a snap connection. The non-detachable connection includes but is not limited to a gluing connection, welding, or a combination of a gluing connection and welding. In the embodiment of the present application, the mounting member 50 is connected to the beam column 13.

[0067] Furthermore, in some embodiments, the mounting member 50 is provided with a mounting hole 55 corresponding to the connector 35, and the connector 35 is inserted into the mounting hole 55 to achieve a fixed connection between the connector 35 and the mounting member 50. In one example, the mounting member 50 may include only one, and all the connectors 35 are installed on the mounting member 50, so that the connectors 35 are more concentrated, which facilitates the docking of the connectors 35 and the connectors 45, and improves the installation efficiency. In another example, the mounting member 50 may include multiple, for example, the mounting member 50 includes two, and the connector 35 electrically connected to the first bus bar 31 can be installed in one of the two mounting members 50, and the connector 35 electrically connected to the second bus bar 33 can be installed in the other of the two mounting members 50, so that the connector 35 is simpler and clearer, and safety problems caused by user wiring errors are prevented.

[0068] In addition, the mounting member 50 can be made of metal materials such as steel, aluminum, aluminum alloy or stainless steel. In the embodiment of the present application, the mounting member 50 can be made of metal materials by sheet metal processing, thereby making the structural strength of the mounting member 50 higher, improving the load capacity that the mounting member 50 can bear, and preventing the mounting member 50 from deformation and damage.

[0069] In the above technical solution, all connectors 35 can be installed in the mounting member 50, so that the connector 35 is installed and fixed in the box body 10. Compared with the energy storage system 100 without the mounting member 50, the position of the connector 35 is more concentrated, which facilitates the docking of the connector 35 and the connecting member 45 and improves the assembly efficiency. In addition, the setting of the mounting member 50 can also make the first bus bar 31 and the second bus bar 33 arranged in an orderly manner around the high-voltage box 30, which is convenient for the management and maintenance of the first bus bar 31 and the second bus bar 33, reduces safety hazards (such as preventing users from tripping, etc.), and improves the integrity and stability of the energy storage system 100.

[0070] See also Figures 2 to 4 In some embodiments, a fixing member 60 is provided on the connector 35 , and the fixing member 60 is connected to the mounting member 50 . The fixing member 60 is used to mount the connector 35 on the mounting member 50 .

[0071] The fixing member 60 is a component that plays a connecting and fixing role in the energy storage system 100. In the embodiment of the present application, the fixing member 60 may be a flange, which is connected to the mounting member 50 and is used to install the connector 35 on the mounting member 50. The setting of the fixing member 60 can improve the connection strength between the connector 35 and the mounting member 50, prevent the connector 35 from loosening or falling off, and ensure the stability of the connection between the connector 35 and the connector 45. In one example, the fixing member 60 can be fixedly connected to the mounting member 50 by screw connection, snap connection, or a combination of screw connection and snap connection, so as to facilitate the installation and removal of the connector 35. For another example, the fixing member 60 can be fixedly connected to the mounting member 50 by gluing, welding, or a combination of gluing and welding, so that the bonding strength between the connector 35 and the mounting member 50 is higher, and the connector 35 is prevented from falling off from the mounting member 50.

[0072] In some embodiments, the fixing member 60 and the connector 35 are an integrally formed structure.

[0073] One-piece molding is a manufacturing process that refers to the process of completing the molding of the entire part in one mold at one time. In the embodiment of the present application, the connector 35 and the fixing part 60 can be integrally molded by one-piece molding processes such as injection molding (such as two-color injection molding or insert injection molding, etc.), stamping molding, and extrusion molding. The use of one-piece molding can make the bonding strength between the fixing part 60 and the connecting part 45 higher. During the long-term use of the energy storage system 100, the connector 35 can be prevented from loosening or falling off, that is, the fixing part 60 and the connecting part 45 are not easily separated, and the stability and reliability of the energy storage system 100 can be ensured. In addition, the one-piece molding structure can also improve the bonding strength between the fixing part 60 and the connecting part 45, and can reduce the number of parts, simplify the installation steps, and improve assembly efficiency.

[0074] In other embodiments, the fixing member 60 and the connector 35 are separately formed structures, and the fixing member 60 and the connector 35 are fixedly connected.

[0075] Split molding is a manufacturing process, which refers to dividing a whole into multiple parts, molding them separately, and then combining the parts together. In the embodiment of the present application, the fixing part 60 and the connector 35 can be separately processed and molded by the split molding process, and then combined together by a detachable connection or a non-detachable connection. Among them, the detachable connection includes but is not limited to a screw connection, a snap connection, or a combination of a screw connection and a snap connection. The non-detachable connection includes but is not limited to a gluing connection, welding, or a combination of a gluing connection and welding. The split molding structure can improve the applicability of the connector 35 and the fixing part 60, and can be adaptively produced according to the specific needs of the energy storage system 100. In addition, the split-molded connector 35 and the fixing part 60 can also be easily disassembled for repair or replacement when the connector 35 or the fixing part 60 is damaged, thereby ensuring the normal operation of the energy storage system 100.

[0076] Please continue reading Figures 2 to 4 In some embodiments, the connector 35 includes a first connector 351 and a second connector 353. The first connector 351 is electrically connected to the first bus bar 31, and the second connector 353 is electrically connected to the second bus bar 33. The mounting member 50 includes a first mounting plate 51 and a second mounting plate 53 connected to each other. The first mounting plate 51 includes a first mounting surface 511. The first connector 351 is installed on the first mounting plate 51 and protrudes from the first mounting surface 511. The second mounting plate 53 includes a second mounting surface 531. The second connector 353 is installed on the second mounting plate 53 and protrudes from the second mounting surface 531. The first mounting surface 511 and the second mounting surface 531 are not coplanar.

[0077] The first connector 351 and the second connector 353 are both components that can connect or disconnect an electrical circuit. In the embodiment of the present application, the first connector 351 is electrically connected to the first bus bar 31, and is electrically connected to the first interface of the high-voltage box 30 through the first bus bar 31. The first connector 351 is installed through the first mounting plate 51 and protrudes from the first mounting surface 511, so that the connector 45 can dock with the portion of the first connector 351 protruding from the first mounting surface 511; the second connector 353 is electrically connected to the second bus bar 33, and is electrically connected to the second interface of the high-voltage box 30 through the second bus bar 33. The second connector 353 is installed through the second mounting plate 53 and protrudes from the second mounting surface 531, so that the connector 45 can dock with the portion of the second connector 353 protruding from the second mounting surface 531, thereby realizing the electrical connection between the connector 35 and the connector 45.

[0078] In addition, the first connector 351 and the second connector 353 may be the same type of connector 35, for example, the first connector 351 and the second connector 353 are both quick plug connectors. The first connector 351 and the second connector 353 may also be different types of connectors 35, for example, the first connector 351 is a quick plug connector, and the second connector 353 is a terminal connector.

[0079] The first mounting plate 51 and the second mounting plate 53 are both structures that play a role in installation and fixing in the energy storage system 100. In the present application, the first mounting surface 511 is the side of the first mounting plate 51 opposite to the first busbar 31, and the second mounting surface 531 is the side of the second mounting plate 53 opposite to the second busbar 33. The first connector 351 protrudes from the first mounting surface 511, and the second connector 353 protrudes from the second mounting surface 531, so that it is convenient to dock the connector 45 with the first connector 351 and the second connector 353, thereby improving the assembly efficiency. In addition, the first connector 351 is installed on the first mounting plate 51, and the second connector 353 is installed on the second mounting plate 53. On the one hand, it is convenient to manage and maintain each connector 35, ensuring the normal operation of the first connector 351 and the second connector 353; on the other hand, it is convenient to distinguish the connector 35 when the connector 45 is connected to the connector 35, preventing the connection disorder between the connector 45 and the connector 35, and ensuring the normal operation of the energy storage system 100.

[0080] In one example, the first mounting plate 51 and the second mounting plate 53 can be integrally formed, that is, the first mounting plate 51 and the second mounting plate 53 are an integral structure. In another example, the first mounting plate 51 and the second mounting plate 53 can be separately formed, that is, the first mounting plate 51 and the second mounting plate 53 are two different structures, and the first mounting plate 51 and the second mounting plate 53 can be fixedly connected and together form the mounting member 50. The fixed connection can be a detachable connection or a non-detachable connection, and the detachable connection includes but is not limited to a screw connection, a snap connection, or a combination of a screw connection and a snap connection. The non-detachable connection includes but is not limited to a glue connection, a welding connection, or a combination of a glue connection and a welding connection.

[0081] In addition, the first mounting plate 51 and the second mounting plate 53 can be made of the same material, for example, the first mounting plate 51 and the second mounting plate 53 are both made of aluminum alloy. The first mounting plate 51 and the second mounting plate 53 can also be made of different materials, for example, the first mounting plate 51 is made of aluminum alloy, and the second mounting plate 53 is made of steel. Of course, the first mounting plate 51 and the second mounting plate 53 can also be made of other combinations of different materials, which are not listed here.

[0082] The first mounting surface 511 and the second mounting surface 531 are not coplanar, which means that the first mounting surface 511 and the second mounting surface 531 are not located on the same plane in three-dimensional space. Since the currents transmitted in the first connector 351 and the second connector 353 are in opposite directions, the first connector 351 and the second connector 353 need to be spaced apart and maintained at a certain distance to achieve electrical isolation, prevent safety hazards such as current short circuit, and ensure the safety of the energy storage system 100. Therefore, in the embodiment of the present application, the first mounting surface 511 and the second mounting surface 531 are not coplanar, thereby, on the one hand, avoiding safety hazards such as current short circuit caused by the opposite directions of current transmitted in the first connector 351 and the second connector 353, thereby improving the safety of the energy storage system 100; on the other hand, compared with the first mounting surface 511 and the second mounting surface 531 being coplanar, the first mounting surface 511 and the second mounting surface 531 are not coplanar. While ensuring the spacing distance between the first connector 351 and the second connector 353, the space occupied by the mounting member 50 (including the first mounting plate 51 and the second mounting plate 53) can be reduced, which is conducive to miniaturization of the energy storage system 100.

[0083] Please also read Figure 2 and Figure 3In some embodiments, the first bus bar 31 and the second bus bar 33 extend along the first direction A, the first connector 351 includes a plurality of first connectors 351 arranged at intervals in the second direction B, the second connector 353 includes a plurality of second connectors 353 arranged at intervals in the second direction B, and the second direction B is perpendicular to the first direction A; in a third direction C perpendicular to the first direction A and the second direction B, the plurality of first connectors 351 and the plurality of second connectors 353 are staggered.

[0084] The number of first connectors 351 is consistent with the number of high-voltage boxes 30, that is, one first connector 351 corresponds to one high-voltage box 30, and multiple first connectors 351 are spaced apart in the second direction B, which can prevent interference between the first bus bars 31 electrically connected to the first connectors 351, and ensure the stability of the first connectors 351 installed on the first mounting plate 51; accordingly, the number of second connectors 353 is consistent with the number of high-voltage boxes 30, that is, one second connector 353 corresponds to one high-voltage box 30, and multiple second connectors 353 are spaced apart in the second direction B, which can prevent interference between the second bus bars 33 electrically connected to the second connectors 353, and ensure the stability of the second connectors 353 installed on the second mounting plate 53. In addition, in the third direction C perpendicular to the first direction A and the second direction B, the plurality of first connectors 351 and the plurality of second connectors 353 are staggered with each other, so that the interference between the first busbar 31 and the second busbar 33 can be reduced or even avoided, and the stability of the first connector 351 and the second connector 353 installed on the mounting member 50 is ensured, space is saved, and it is conducive to the miniaturization of the energy storage system 100. In some embodiments, the first direction A may be the same as the length direction X of the box 10, the second direction B may be the same as the width direction Y of the box 10, and the third direction C may be the same as the height direction Z of the box 10, so that the space inside the box 10 can be fully utilized, which is conducive to the miniaturization of the energy storage system 100.

[0085] In the above technical solution, multiple first connectors 351 and multiple second connectors 353 are staggered. On the one hand, the first bus bar 31 and the second bus bar 33 can be staggered to save space and facilitate the miniaturization of the energy storage system 100; on the other hand, interference between the connector 35 and the connector 45 can be prevented during electrical connection, thereby ensuring the stability of the electrical connection between the high-voltage box 30 and the control device.

[0086] Further, in some embodiments, projections of the plurality of first connectors 351 toward the third direction C and projections of the plurality of second connectors 353 toward the third direction C are alternately arranged in sequence.

[0087] Specifically, in the same mounting member 50, in the third direction C, the plurality of first connectors 351 and the plurality of second connectors 353 are staggered with each other, and the projections of the plurality of first connectors 351 toward the third direction C and the projections of the plurality of second connectors 353 toward the third direction C are arranged alternately in sequence, thereby reducing or even avoiding the interference between the first bus bar 31 and the second bus bar 33, ensuring the stability of the installation of the first connector 351 and the second connector 353 on the mounting member 50, saving space, and facilitating the miniaturization of the energy storage system 100.

[0088] In the above technical solution, the projections of the plurality of first connectors 351 and the plurality of second connectors 353 in the third direction C are arranged alternately in sequence. This can, on the one hand, enable the first bus bars 31 and the second bus bars 33 to be arranged alternately, saving space and being conducive to the miniaturization of the energy storage system 100; on the other hand, it can prevent interference between the connector 35 and the connector 45 when they are electrically connected, thereby ensuring the stability of the electrical connection between the high-voltage box 30 and the control device.

[0089] See also Figures 2 to 4 In some embodiments, the mounting member 50 further includes a connecting portion 57, which is connected to the box body 10. The connecting portion 57 protrudes and extends from the side edge of the first mounting plate 51 in a direction away from the first mounting plate 51; and / or the connecting portion 57 protrudes and extends from the side edge of the second mounting plate 53 in a direction away from the second mounting plate 53.

[0090] The connecting portion 57 is a protruding structure extending from the first mounting plate 51 and / or the second mounting plate 53. In the embodiment of the present application, the connecting portion 57 can be connected to the box body 10 (beam column 13), so that the connector 35 can be installed on the first mounting plate 51 and the second mounting plate 53, that is, the connector 35 can be fixedly installed on the box body 10, which is convenient for the docking of the connector 35 and the connecting member 45, and improves the assembly efficiency. Moreover, the connecting portion 57 on the first mounting plate 51 and / or the second mounting plate 53 can be connected to the box body 10, which improves the stability and reliability of the installation of the mounting member 50 on the box body 10.

[0091] In one example, the connection portion 57 protrudes and extends from at least one of the two side edges of the first mounting plate 51 in the second direction B in a direction away from the first mounting plate 51. In another example, the connection portion 57 protrudes and extends from at least one of the two side edges of the second mounting plate 53 in the second direction B in a direction away from the second mounting plate 53. In yet another example, the connection portion 57 protrudes and extends from at least one of the two side edges of the first mounting plate 51 in the second direction B in a direction away from the first mounting plate 51, and protrudes and extends from at least one of the two side edges of the second mounting plate 53 in the second direction B in a direction away from the first mounting plate 51. In yet another example, the connection portion 57 protrudes and extends from two side edges of the mounting member 50 in the third direction C, and the two side edges of the mounting member 50 in the third direction C include: a side edge of the first mounting plate 51 in the third direction C away from the second mounting plate 53, and a side edge of the second mounting plate 53 in the third direction C away from the first mounting plate 51. In the present application, the connecting portion 57 protrudes and extends from at least one of the two side edges of the first mounting plate 51 in the second direction B toward a direction away from the first mounting plate 51, and protrudes and extends from at least one of the two side edges of the second mounting plate 53 in the second direction B toward a direction away from the first mounting plate 51, thereby improving the connection strength between the mounting member 50 and the box body 10, and ensuring the stability and reliability of the connection between the connector 35 and the connecting member 45.

[0092] The connection part 57 can be fixedly connected to the housing 10 by screw connection, snap connection or a combination of screw connection and snap connection; or, the connection part 57 can be fixedly connected to the housing 10 by gluing, welding or a combination of gluing and welding. In the embodiment of the present application, the connection part 57 is directly connected to the housing 10 by welding. Welding, also known as fusion, is a process or method of combining and diffusing atoms or molecules of two or more of the same or different materials by heating, high temperature or high pressure, so as to join metals or other thermoplastic materials. The connection part 57 and the housing 10 can be welded by ultrasonic welding, molecular diffusion welding and laser welding. The welding method can make the connection between the connection part and the housing 10 more secure, and during the long-term use of the energy storage system 100, it is not easy to cause problems such as the mounting part 50 falling off, which can ensure the stability and reliability of the energy storage system 100.

[0093] In some embodiments, the mounting member 50 further includes a folding portion 59 which bends and extends from a periphery of the first mounting plate 51 toward a direction away from the first mounting plate 51 ; and / or the folding portion 59 bends and extends from a periphery of the second mounting plate 53 toward a direction away from the second mounting plate 53 .

[0094] The folding portion 59 is a protruding structure that is bent and extended from the first mounting plate 51 and / or the second mounting plate 53, and the folding portion 59 is a structure that plays a reinforcing role on the first mounting plate 51 and / or the second mounting plate 53. Since the plurality of first connectors 351 are all installed on the first mounting plate 51, the plurality of first connectors 351 are all installed on the second mounting plate 53, and the plurality of first connectors 351 and the plurality of second connectors 353 are all arranged at intervals along the second direction B, when the connecting member 45 is docked with the first connector 351 and the second connector 353, the first mounting plate 51 and the second mounting plate 53 need to bear a large load. If the folding portion 59 is not provided, the first mounting plate 51 and the second mounting plate 53 can bear a small load and are easily damaged. In the embodiment of the present application, the first mounting plate 51 and / or the second mounting plate 53 are provided with a folding portion 59, so as to improve the structural strength of the first mounting plate 51 and / or the second mounting plate 53, that is, to improve the upper limit of the load that the first mounting plate 51 and / or the second mounting plate 53 can bear, ensure the docking of the connecting member 45 and the connector 35, and improve the stability of the electrical connection between the high-voltage box 30 and the control device. In the embodiment of the present application, the folding portion 59 is bent and extended from the side edge of the first mounting plate 51 away from the second mounting plate 53 in the third direction C toward the direction away from the first mounting plate 51, and is bent and extended from the side edge of the second mounting plate 53 away from the first mounting plate 51 in the third direction C toward the direction away from the second mounting plate 53, and the folding portion 59 and the connecting portion 57 are spaced apart on the side edge of the mounting member 50 (including the first mounting plate 51 and the second mounting plate 53).

[0095] Please also read Figure 1 and Figure 2 In some embodiments, the control device includes an energy storage converter 40 .

[0096] The energy storage inverter 40 (Power Conversion System, PCS) is a device used to control the charging and discharging process of the battery cluster 20. The energy storage inverter 40 can perform AC-DC conversion. It can invert the DC power of the energy storage system 100 (the electric energy of the battery cluster 20) into AC power and transmit it to the power grid or use it for AC loads; it can also rectify the AC power of the power grid into DC power to charge the energy storage system 100 (battery cluster 20).

[0097] In some embodiments, the energy storage inverter 40 can be independently arranged outside the box 10, which can facilitate the upgrade and maintenance of the energy storage inverter 40 without affecting the normal operation of the high-voltage box 30 and the battery cluster 20; on the other hand, it can facilitate the expansion of the energy storage inverter 40, thereby improving the adaptability of the energy storage inverter 40. In other embodiments, the energy storage inverter 40 is integrated into the box 10, which can reduce the space occupied by the energy storage inverter 40, making the layout of the entire energy storage system 100 more compact, which is conducive to the miniaturization of the energy storage system 100; on the other hand, it can shorten the distance between the energy storage inverter 40 and the high-voltage box 30, which can reduce the loss of electric energy during transmission and improve the overall efficiency.

[0098] In some embodiments, the energy storage inverter 40 includes a first connecting line 41 electrically connected to the first bus bar 31 and a second connecting line 43 electrically connected to the second bus bar 33, and at least one of the first connecting line 41 and the second connecting line 43 is provided with a connector 45, which is used to adapt and plug with the connector 35.

[0099] The first connection line 41 and the second connection line 43 are components for power transmission. In the embodiment of the present application, one end of the first connection line 41 is connected to the positive terminal, and the other end is electrically connected to the first bus bar 31 through the first connector 351, and one end of the second connection line 43 is connected to the negative terminal, and the other end is electrically connected to the second bus bar 33 through the second connector 353, so that the energy storage converter 40 can transmit external power (power grid power) to the battery cluster 20 through the high-voltage box 30, or transmit the power of the battery cluster 20 to an external device (such as a power grid or an AC load, etc.).

[0100] The connector 45 is a component that can connect or disconnect an electrical circuit. In the embodiment of the present application, the connector 45 is a component that matches the connector 35, so that a matching connection between the connector 45 and the connector 35 can be achieved. The connector 45 includes a first connector 451 and a second connector 453, and the first connector 451 can be electrically connected to the first connector 351 to achieve an electrical connection between the first connecting line 41 and the first bus bar 31, and the second connector 453 can be electrically connected to the second connector 353 to achieve an electrical connection between the second connecting line 43 and the second bus bar 33. In one embodiment, the connector 45 and the first connecting wire 41 are separately provided, that is, the connector 45 and the first connecting wire 41 are two different structures, in which case the first connecting wire 41 can be connected to the connector 45 by means of crimping or welding; accordingly, the connector 45 and the second connecting wire 43 are separately provided, that is, the connector 45 and the second connecting wire 43 are two different structures, in which case the second connecting wire 43 can be connected to the connector 45 by means of crimping or welding. In another embodiment, the connector 45 and the first connecting wire 41 are integrally formed, that is, the connector 45 and the first connecting wire 41 are an integral structure, thereby improving the stability and reliability of the connection between the connector 45 and the first connecting wire 41; accordingly, the connector 45 and the second connecting wire 43 are integrally formed, that is, the connector 45 and the second connecting wire 43 are an integral structure, thereby improving the stability and reliability of the connection between the connector 45 and the second connecting wire 43.

[0101] In the above technical solution, the connector 45 (including the first connector 451 and the second connector 453) can be directly adapted and plugged with the connector 35 (including the first connector 351 and the second connector 353) to electrically connect the first connecting line 41 and the first bus bar 31, and the second connecting line 43 and the second bus bar 33, thereby simplifying the electrical connection operation between the high-voltage box 30 and the control device (energy storage inverter 40), that is, simplifying the operating steps of the electrical connection between the high-voltage box 30 and the control device, thereby improving the assembly efficiency of the energy storage system 100.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An energy storage system, characterized in that: include: A box body, wherein the box body is provided with a containing cavity; A plurality of battery clusters, wherein the plurality of battery clusters are installed in the accommodating cavity; A control device, the control device is used to manage the plurality of battery clusters; and A plurality of high-voltage boxes are installed in the accommodating cavity and are electrically connected to the plurality of battery clusters respectively, each of the high-voltage boxes is provided with a first bus bar and a second bus bar, at least one of the first bus bar and the second bus bar is provided with a connector, and the connector is used to dock with the connecting piece of the control device to electrically connect the high-voltage box with the control device.

2. The energy storage system according to claim 1, characterized in that: The energy storage system further comprises: The mounting piece is mounted on the box body, and the connector is installed through the mounting piece.

3. The energy storage system according to claim 2, characterized in that: The connector is provided with a fixing piece, the fixing piece is connected to the mounting piece, and the fixing piece is used to mount the connector on the mounting piece; The fixing member and the connector are an integrally formed structure; or The fixing piece and the connector are separately formed structures, and the fixing piece is fixedly connected to the connector.

4. The energy storage system according to claim 2, characterized in that: The connector includes a first connector and a second connector, the first connector is electrically connected to the first bus bar, and the second connector is electrically connected to the second bus bar; The mounting member includes a first mounting plate and a second mounting plate connected to each other, the first mounting plate includes a first mounting surface, the first connector is installed through the first mounting plate and protrudes from the first mounting surface, the second mounting plate includes a second mounting surface, the second connector is installed through the second mounting plate and protrudes from the second mounting surface, and the first mounting surface and the second mounting surface are not coplanar.

5. The energy storage system according to claim 2, characterized in that: The connector includes a first connector and a second connector, the first connector is electrically connected to the first bus bar, and the second connector is electrically connected to the second bus bar; the first bus bar and the second bus bar extend along a first direction, the first connector includes a plurality of first connectors, and the plurality of first connectors are arranged at intervals in a second direction, the second connector includes a plurality of second connectors, and the plurality of second connectors are arranged at intervals in the second direction, and the second direction is perpendicular to the first direction; In a third direction perpendicular to the first direction and the second direction, the plurality of first connectors and the plurality of second connectors are staggered.

6. The energy storage system according to claim 5, characterized in that: Projections of the plurality of first connectors toward the third direction and projections of the plurality of second connectors toward the third direction are arranged alternately in sequence.

7. The energy storage system according to claim 4, characterized in that: The mounting member further comprises a connecting portion, and the connecting portion is connected to the box body; The connecting portion protrudes and extends from a side edge of the first mounting plate in a direction away from the first mounting plate; and / or The connecting portion protrudes and extends from a side edge of the second mounting plate toward a direction away from the second mounting plate.

8. The energy storage system according to claim 4, characterized in that: The mounting member further comprises a folding portion, The folding portion bends and extends from the periphery of the first mounting plate toward a direction away from the first mounting plate; and / or The folding portion bends and extends from the periphery of the second mounting plate toward a direction away from the second mounting plate.

9. The energy storage system according to any one of claims 1 to 8, characterized in that: The control device includes an energy storage converter, and the energy storage converter is independently arranged outside the box; or the energy storage converter is integrated into the box.

10. The energy storage system according to claim 9, characterized in that: The energy storage converter includes a first connecting wire electrically connected to the first bus bar and a second connecting wire electrically connected to the second bus bar. At least one of the first connecting wire and the second connecting wire is provided with a connecting piece, and the connecting piece is used for adapting and plugging with the connector.

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