An energy storage system

Abstract

The embodiment of the present application provides an energy storage system, which includes an energy storage cabinet, a high-voltage box and at least two energy storage converters. The high-voltage box and the energy storage converter are located in the energy storage cabinet, and the energy storage converter is electrically connected to the high-voltage box; the high-voltage box includes a box body with a receiving cavity, at least two circuit breakers electrically connected to the electronic components through a connector, and a first mounting bracket for mounting the circuit breaker. Among them, the first mounting bracket includes a first main body and a second main body connected to each other, the first main body is detachably mounted in the receiving cavity, and each circuit breaker is sequentially mounted on the second main body along the height direction of the high-voltage box. The circuit breaker can be installed or removed with the first mounting bracket, and the electronic component is located on the side of the second main body away from the circuit breaker. The high-voltage box also includes at least one support member, one end of the support member is connected to the connector, and the other end is connected to the first mounting bracket. Such a design can help reduce the volume of the high-voltage box and reduce the difficulty of assembly.

Description

Technical Field

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

[0002] With the development of technology, the application of photovoltaic energy storage is becoming more and more extensive. The energy storage system includes a container, a high-voltage box and an energy storage inverter. Usually, the high-voltage box is arranged inside the container, and the energy storage inverter is arranged outside the container. The high-voltage box occupies a large space, which makes it impossible to integrate the energy storage inverter inside the container. Summary of the invention

[0003] In view of this, the present application provides an energy storage system for reducing the volume of a high-voltage box.

[0004] The present application provides an energy storage system, which includes an energy storage cabinet, a high-voltage box and at least two energy storage converters, wherein the high-voltage box and the energy storage converter are located in the energy storage cabinet, and the energy storage converter is electrically connected to the high-voltage box; the high-voltage box includes:

[0005] A box body, wherein the box body is provided with a containing cavity;

[0006] An electronic component, wherein the electronic component is located in the accommodating cavity;

[0007] at least two circuit breakers, the circuit breakers being electrically connected to the electronic components via connectors;

[0008] a first mounting bracket, the first mounting bracket being used to mount the circuit breaker on the box;

[0009] Wherein, the first mounting bracket includes a first main body and a second main body connected to each other, the first main body is detachably mounted in the accommodating cavity, and along the height direction of the high-voltage box, each circuit breaker is sequentially mounted on the second main body, and the circuit breaker can be installed on or removed from the high-voltage box with the first mounting bracket, the electronic component is located on a side of the second main body away from the circuit breaker, and the high-voltage box also includes at least one support member, one end of the support member is connected to the connecting member, and the other end is connected to the first mounting bracket.

[0010] In a possible implementation manner, the box body is provided with a clamping portion, and the first mounting bracket is provided with a first matching portion.

[0011] The clamping portion is disposed on the bottom wall of the accommodating cavity and protrudes in a direction away from the bottom wall, and the angle between the clamping portion and the bottom wall is an acute angle;

[0012] The space between the clamping portion and the bottom wall is a clamping space, and at least a portion of the first matching portion can extend into the clamping space;

[0013] The first matching portion is provided with at least one matching groove. When the clamping portion is matched with the first matching portion, at least part of the clamping portion is located in the matching groove. The clamping portion and the first matching portion cooperate to limit the relative position of the first mounting bracket and the box body.

[0014] In a possible embodiment, the first main body is provided with at least one second matching portion, and the second matching portion is connected to the high-voltage box through a mounting member, and along the length direction of the first main body, the first matching portion and the second matching portion are located at opposite ends of the first main body.

[0015] In a possible implementation manner, at least one of the support members is connected to a side of the second body portion away from the circuit breaker, and / or;

[0016] The first mounting bracket is provided with a flange, and an angle is formed between the flange and the first main body and / or the second main body, and at least one of the support members is connected to the flange.

[0017] In a possible implementation, the first mounting bracket further includes a third main body portion, the third main body portion is located on a side of the second main body portion away from the first main body portion, one end of the third main body portion is connected to the second main body portion, and the other end of the third main body portion is connected to the box.

[0018] In a possible embodiment, the high-voltage box also includes a first insulating member, which includes a first main body portion, a second main body portion and a third main body portion, the first main body portion and the third main body portion are located on opposite sides of the second main body portion and have an angle between the second main body portions, the first main body portion, the second main body portion and the third main body portion are used to enclose a accommodating space, and the circuit breaker is located in the corresponding accommodating space.

[0019] In a possible implementation, the connecting member includes a first connecting section, a second connecting section and at least one transition section, the first connecting section and the second connecting section are connected through the transition section, an angle is formed between the transition section and the first connecting section and / or the second connecting section, the first connecting section is electrically connected to the circuit breaker, the second connecting section is electrically connected to the electronic component, and the connecting member can be installed on the high-voltage box or removed from the high-voltage box together with the circuit breaker.

[0020] In a possible embodiment, the high-voltage box includes an arc extinguishing member and a second insulating member, the arc extinguishing member is located at the incoming line end of the circuit breaker, the second insulating member is located at the outgoing line end of the circuit breaker, the connecting member includes a first connecting member and a second connecting member, the electronic components include a fuse and a relay, one end of the first connecting member is electrically connected to the positive pole of the outgoing line end of the circuit breaker, and the other end is electrically connected to the fuse, one end of the second connecting member is electrically connected to the negative pole of the outgoing line end of the circuit breaker, and the other end is electrically connected to the relay, and at least a portion of the second insulating member is located between the first connecting member and the second connecting member.

[0021] In a possible embodiment, the high-voltage box includes a second mounting bracket, the second mounting bracket is located in the accommodating cavity, the second mounting bracket includes a mounting portion and a supporting portion, the supporting portion is located between the mounting portion and the bottom wall of the accommodating cavity with a spacing, the supporting portion is connected to the box body, and one of the fuse and the relay is located on a side of the mounting portion away from the bottom wall of the accommodating cavity, and the other is located on a side of the mounting portion close to the bottom wall of the accommodating cavity.

[0022] In a possible implementation manner, the circuit breaker is provided with a mounting groove, the arc extinguishing member is provided with a third matching portion, and at least a portion of the third matching portion can extend into the mounting groove;

[0023] The high-voltage box further comprises a stopper connected to the second main body portion. The stopper is located at a side of the arc extinguishing member away from the circuit breaker and is used to limit the movement of the arc extinguishing member relative to the circuit breaker.

[0024] The embodiment of the present application provides an energy storage system, which includes an energy storage cabinet, a high-voltage box and at least two energy storage converters. The high-voltage box and the energy storage converter are located in the energy storage cabinet, and the energy storage converter is electrically connected to the high-voltage box; the high-voltage box includes a box body with a receiving cavity, at least two circuit breakers electrically connected to the electronic components through a connector, and a first mounting bracket for mounting the circuit breaker. Among them, the first mounting bracket includes a first main body and a second main body connected to each other, the first main body is detachably mounted in the receiving cavity, and each circuit breaker is sequentially mounted on the second main body along the height direction of the high-voltage box. The circuit breaker can be installed on the high-voltage box or removed from the high-voltage box with the first mounting bracket, and the electronic component is located on the side of the second main body away from the circuit breaker. The high-voltage box also includes at least one support member, one end of the support member is connected to the connector, and the other end is connected to the first mounting bracket. Such a design can help reduce the volume of the high-voltage box, reduce the difficulty of assembly, and improve production efficiency.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 A schematic diagram of a high-voltage box provided in an embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the interior of the high-voltage box provided in an embodiment of the present application;

[0029] Figure 3 A schematic diagram of a first mounting bracket provided in an embodiment of the present application;

[0030] Figure 4 A schematic diagram of the box provided for this application;

[0031] Figure 5 for Figure 4 A partial enlarged view of the middle Ⅰ position;

[0032] Figure 6 A schematic diagram of a circuit breaker and a mounting bracket provided in an embodiment of the present application;

[0033] Figure 7 A schematic diagram of an installation module provided in an embodiment of the present application;

[0034] Figure 8 A schematic diagram of a first mounting bracket provided in an embodiment of the present application;

[0035] Fig. 9 A cross-sectional view of a high-voltage box provided in an embodiment of the present application;

[0036] Fig.10 A schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0037] Fig.11 A schematic diagram of an arc extinguishing member provided in an embodiment of the present application;

[0038] Fig.12 A schematic diagram of an energy storage system provided in an embodiment of the present application.

[0039] Reference numerals

[0040] 1-Box;

[0041] 11-accommodating chamber;

[0042] 12-clip portion;

[0043] 13- second mounting bracket;

[0044] 131-installation part;

[0045] 132-supporting part;

[0046] 14-control parts;

[0047] 15- connector;

[0048] 2-Electronic components;

[0049] 21-Fuse;

[0050] 22-Relay;

[0051] 3- Circuit breaker;

[0052] 31-mounting slot;

[0053] 32-connecting rod;

[0054] 4-Connectors;

[0055] 41-first connecting section;

[0056] 42- second connecting section;

[0057] 43- Transition section;

[0058] 44-first connecting member;

[0059] 45- second connecting member;

[0060] 5- first mounting bracket;

[0061] 51- first main body;

[0062] 511-first matching portion;

[0063] 511a-matching groove;

[0064] 512- second matching portion;

[0065] 513-through hole;

[0066] 52- second main body;

[0067] 521-first mounting hole;

[0068] 53-Flanging;

[0069] 531-third mounting hole;

[0070] 54- third main body;

[0071] 55-stopper;

[0072] 6- Support member;

[0073] 7- a first insulating member;

[0074] 71-First body part;

[0075] 72- second body portion;

[0076] 73- third body part;

[0077] 74-Avoidance slot;

[0078] 8-arc extinguishing parts;

[0079] 81- third matching part;

[0080] 9- second insulating member;

[0081] 10-Energy storage cabinet;

[0082] 20-high voltage box;

[0083] 201-connection end;

[0084] 30-Energy storage converter. DETAILED DESCRIPTION

[0085] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0086] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0087] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0088] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0089] Photovoltaic energy storage can convert solar energy into electrical energy for storage. Energy storage containers are one of the important devices for photovoltaic energy storage. Their function is to store the electrical energy collected by photovoltaic panels. Energy storage containers are usually equipped with a power conversion system 30 (PCS) and a high-voltage box 20. The energy storage converter 30 is a device for storing electrical energy and can convert direct current into alternating current to provide electrical energy for external devices. The high-voltage box 20 is used to control the connection or disconnection of the system's main electrical circuit to ensure the safe operation of the battery energy storage system.

[0090] Usually, the high-voltage box 20 is an independent cabinet and is placed alone inside the container. With the development of technology, it has become a trend to integrate the energy storage inverter 30 inside the container. Since the space inside the container is limited, integrating the energy storage inverter 30 inside the container will compress the assembly space of the high-voltage box 20. Therefore, new requirements are put forward for the structure of the high-voltage box 20.

[0091] An embodiment of the present application provides an energy storage system, which may include an energy storage cabinet 10 , a high-voltage box 20 , and an energy storage converter 30 , wherein the high-voltage box 20 and the energy storage converter 30 are installed in the energy storage cabinet 10 .

[0092] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a high-voltage box 20, which includes a box body 1, electronic components 2, a first mounting bracket 5 and at least two circuit breakers 3. The box body 1 is provided with a receiving chamber 11, and the receiving chamber 11 is used to receive the first mounting bracket 5, the circuit breaker 3 and the electronic components 2. The circuit breaker 3 is mounted on the first mounting bracket 5, and is installed on the high-voltage box 20 together with the first mounting bracket 5, or is removed from the high-voltage box 20 with the first mounting bracket 5. The circuit breaker 3 is electrically connected to the electronic component 2 through a connector 4, and is used to control the connection or disconnection of the overall circuit of the energy storage system. Figure 3 As shown, the first mounting bracket 5 includes a first main body 51 and a second main body 52, which are connected to each other and have an angle, and the first main body 51 and the second main body 52 can be arranged in an "L" shape. The first main body 51 is connected to the box 1, and the circuit breaker 3 is installed on the first mounting bracket 5 through the second main body 52.

[0093] When assembling the high-voltage box 20 , the circuit breaker 3 can be first installed on the first mounting bracket 5 outside the high-voltage box 20 , so that the circuit breaker 3 and the first mounting bracket 5 form a mounting module, and then the circuit breaker 3 and the first mounting bracket 5 are installed as a whole in the high-voltage box 20 .

[0094] When the volume of the high-voltage box 20 is reduced, the space inside the high-voltage box 20 will also be relatively reduced. When the circuit breaker 3 is directly installed in the high-voltage box 20, due to limited space, it is difficult to install the circuit breaker 3, resulting in reduced assembly efficiency. Compared with the solution of directly installing the circuit breaker 3 on the box body 1 of the high-voltage box 20, installing the circuit breaker 3 outside the high-voltage box 20 can help increase the operating space and facilitate the operation of the operator.

[0095] The high-voltage box 20 provided in the embodiment of the present application includes at least two circuit breakers 3, each circuit breaker 3 is used to control an energy storage converter 30, and each circuit breaker 3 is sequentially installed on the second main body 52 of the first mounting bracket 5 along the thickness direction of the high-voltage box 20.

[0096] In the scheme provided by the embodiment of the present application, by sequentially arranging the circuit breakers 3 along the height direction of the high-voltage box 20, the space utilization rate of the high-voltage box 20 in the height direction can be improved, thereby improving the integration of the high-voltage box 20 and making the overall structure of the high-voltage box 20 more compact, which can be beneficial to reducing the overall volume of the high-voltage box 20. Due to the reduction in the volume of the high-voltage box 20, the space inside the high-voltage box 20 is limited, and the operating space left for the operator when installing the circuit breaker 3 is small. When multiple circuit breakers 3 are installed, the installation is difficult or even impossible due to insufficient operating space. By adopting the scheme provided by the embodiment of the present application, each circuit breaker 3 can be installed on the first mounting bracket 5 outside the high-voltage box 20 in advance, so that the operator has enough space to install the circuit breaker 3 to reduce the difficulty of operation. After the circuit breaker 3 and the first mounting bracket 5 are installed, the circuit breaker 3 and the first mounting bracket 5 are installed as a whole inside the high-voltage box 20. By modularizing the circuit breaker 3 and the first mounting bracket 5, the utilization rate of the space of the high-voltage box 20 can be improved and the installation difficulty can be reduced.

[0097] like Figure 2 As shown, in a possible embodiment, one end of the connecting member 4 is connected to the circuit breaker 3, and the other end is connected to the electronic component 2. The high-voltage box 20 also includes at least one supporting member 6, one end of the supporting member 6 is connected to the connecting member 4, and the other end is connected to the first mounting bracket 5.

[0098] The supporting member 6 can be provided to support the connecting member 4, thereby reducing the possibility of deformation of the connecting member 4 during use.

[0099] like Figure 3 , Figure 4 and Figure 5 As shown, in a possible implementation, the box body 1 is provided with a clamping portion 12 , and the first mounting bracket 5 is provided with a first matching portion 511 , and the clamping portion 12 is used to cooperate with the first matching portion 511 to limit the relative position of the first mounting bracket 5 and the box body 1 .

[0100] Connecting the first mounting bracket 5 and the box body 1 by means of a snap-fitting method can help reduce the difficulty of operation, thereby reducing the demand for operating space, and the snap-fitting method can also facilitate disassembly. When the circuit breaker 3 needs to be removed from the high-voltage box 20, the snap-fitting between the first mounting bracket 5 and the box body 1 can be released, and the operation is relatively convenient and quick.

[0101] like Figure 5 As shown, in a possible embodiment, the clamping portion 12 is disposed on the bottom wall of the accommodating cavity 11 and protrudes away from the bottom wall. An angle is formed between the clamping portion 12 and the bottom wall, and the angle is an acute angle. The space between the clamping portion 12 and the bottom wall of the accommodating cavity 11 can be used to form a clamping space, and at least a portion of the first matching portion 511 can extend into the clamping space for clamping.

[0102] Such a design can facilitate the connection between the first mounting bracket 5 and the box body 1. The first limiting portion extends into the snap-in space and can limit the first matching portion 511 through the snap-in portion 12, thereby limiting the position of the first mounting bracket 5, which is beneficial to improve the installation position accuracy of the first mounting bracket 5 and better meet actual usage requirements.

[0103] like Figure 3 As shown, in a possible implementation manner, the first matching portion 511 is provided with at least one matching groove 511 a , and when the clamping portion 12 is matched with the first matching portion 511 , at least a portion of the clamping portion 12 is located in the matching groove 511 a .

[0104] By providing the matching groove 511a, the matching of the clamping portion 12 and the matching groove 511a can form a clamping connection, which can further improve the connection stability between the clamping portion 12 and the first mounting bracket 5. By making the first matching portion 511 extend into the clamping space, the first mounting bracket 5 can be limited in the height direction of the high-voltage box 20. By making the clamping portion 12 extend into the matching groove 511a, it can be used to limit the shaking of the clamping portion 12 and the first mounting bracket 5, which is conducive to improving the stability of the connection between the circuit breaker 3 and the first mounting bracket 5 and the high-voltage box 20, and reducing the possibility of shaking during transportation and use, causing the circuit breaker 3 to be out of the preset position, and causing the high-voltage box 20 to fail.

[0105] like Figure 5 As shown, in a possible implementation manner, the clamping portion 12 is fixedly connected to the box body 1 .

[0106] The clamping portion 12 may be an independent component relative to the box body 1, and may be fixedly mounted on the box body 1 by welding, bonding, threaded connection, etc. Such a design allows the position and quantity of the clamping portion 12 to be adjusted according to actual usage requirements during use, making the configuration of the high-voltage box 20 more flexible, and facilitating the improvement of the space utilization of the high-voltage box 20.

[0107] In a possible implementation, the clamping portion 12 may be integrally formed with the box body 1 .

[0108] By adopting the one-piece molding method, the steps of assembling the high-voltage box 20 can be reduced. The one-piece molded clamping portion 12 has better integrity and is suitable for mass production. Since the standardized design of the high-voltage box 20 is achieved, the versatility of the high-voltage box 20 is improved.

[0109] like Figure 3 As shown, in a possible embodiment, the first main body portion 51 is provided with at least one second matching portion 512, and the second matching portion 512 can be connected to the high-voltage box 20 by means of mounting parts such as screws and bolts, and the first matching portion 511 and the second matching portion 512 are located at opposite ends of the first main body portion 51 along the length direction of the first main body portion 51.

[0110] The second matching portion 512 can be provided to increase the contact area between the first mounting bracket 5 and the box body 1, thereby improving the stability of the connection. The first matching portion 511 and the second matching portion 512 are located on different sides of the first main body 51, and the first mounting bracket 5 and the box body 1 can be connected from different positions during installation, thereby improving the stability of the installation of the first mounting bracket 5 and reducing the possibility of shaking of the first mounting bracket 5 during transportation and use.

[0111] like Figure 3 As shown, in a possible implementation manner, the first main body portion 51 is provided with a through hole 513 , and the through hole 513 penetrates the first main body portion 51 along the thickness direction of the high-voltage box 20 .

[0112] By providing a through hole 513 in the first main body 51, the wiring harness can be avoided. During the assembly process, the wiring harness can pass through the through hole 513. At the same time, the through hole 513 also has a weight-reducing effect, which is beneficial to reduce the weight of the first mounting bracket 5 and further reduce the overall mass of the high-voltage box 20.

[0113] like Figure 3 As shown, in a possible implementation manner, the second main body 52 is provided with a first mounting hole 521 , and the circuit breaker 3 is mounted on the first mounting bracket 5 through the first mounting hole 521 .

[0114] The first mounting hole 521 can be provided to facilitate connection between the circuit breaker 3 and the first mounting bracket 5 .

[0115] like Figure 6 As shown, in a possible implementation manner, at least one support member 6 is connected to a side of the second body portion 52 away from the circuit breaker 3 .

[0116] One end of the support member 6 is connected to the connecting member 4 , and the other end is connected to the first mounting bracket 5 . Such a design can provide support for the connecting member 4 .

[0117] Compared with the solution of directly installing the circuit breaker 3 on the high-voltage box 20, since the first mounting bracket 5 is not provided, when the size of the connector 4 is large and the connector 4 needs to be supported, the connector 4 can only be arranged along the inner wall of the high-voltage box 20, and a supporting structure is provided on the inner wall of the high-voltage box 20. This method causes the connector 4 to usually only be a linear structure, so the relative position of the circuit breaker 3 and the electronic component 2 electrically connected to the circuit breaker 3 is affected by the supporting structure, and the electronic component 2 can only be located on the side where the outlet terminal of the circuit breaker 3 is located, resulting in the overall layout of the high-voltage box 20 being restricted, which is not conducive to optimizing the internal structure of the high-voltage box 20, resulting in an increase in the volume of the high-voltage box 20. Moreover, since the support member 6 is provided on the inner wall of the box body 1, it is necessary to operate inside the box body 1 during installation, and the space inside the box body 1 is limited, resulting in increased connection difficulty and affecting assembly efficiency.

[0118] In the solution provided in the embodiment of the present application, by setting a first mounting bracket 5, a support member 6 can be set on the first mounting bracket 5. Therefore, the position of the electronic component 2 can be adjusted according to the layout requirements of the high-voltage box 20, and the connector 4 can be set as a special-shaped connector 4, that is, the connector 4 may not be a linear structure, the connector 4 may include one or more bending sections, and the connector 4 is supported by the support member 6, so that the electronic component 2 can be arranged on the side of the second main body 52 away from the circuit breaker 3, that is, the electronic component 2 may not be limited to the side where the output terminal of the circuit breaker 3 is located.

[0119] At the same time, during the assembly of the high-voltage box 20, the connector 4 can be electrically connected to the circuit breaker 3 and connected to the support 6 in advance. In this way, it is only necessary to connect the connector 4 and the electronic component 2 inside the high-voltage box 20, which can reduce the number of operating steps inside the high-voltage box 20, thereby helping to reduce the difficulty of assembly and improve assembly efficiency.

[0120] like Figure 6 As shown, in a possible implementation, the first mounting bracket 5 is provided with a flange 53 , an angle is formed between the flange 53 and the first main body portion 51 and / or the second main body portion 52 , and at least one support member 6 is connected to the flange 53 .

[0121] By providing the flanging 53, the first main body portion 51 and the second main body portion 52 can be strengthened, thereby improving the structural strength of the first mounting bracket 5 and better meeting the actual usage requirements. Moreover, by providing the flanging 53, the area of the first mounting bracket 5 can be increased, and the support member 6 can be connected to the flanging 53, thereby enhancing the flexibility of the setting of the support member 6, so as to enhance the flexibility of the setting of the connecting member 4. The support member 6 can be connected to one or more of the box body 1, the second main body portion 52, and the flanging 53 according to actual requirements, which is beneficial to optimizing the internal structure of the high-voltage box 20, thereby reducing the volume of the high-voltage box 20.

[0122] In a possible implementation manner, the support member 6 can be mounted on the first mounting bracket 5 by means of welding, bonding, threaded connection, etc. A second mounting hole can be provided on the side of the second main body portion 52 away from the circuit breaker 3 and / or a third mounting hole 531 can be provided on the flanging 53. Mounting the support member 6 through the mounting hole can improve the positioning accuracy of the support member 6 during installation and increase the contact area between the first mounting bracket 5 and the support member 6, thereby being beneficial to enhancing the connection stability of the support member 6 and better meeting the actual usage requirements.

[0123] As Figure 6 shown, in a possible implementation manner, the first mounting bracket 5 may further include a third main body portion 54. The third main body portion 54 is located on the side of the second main body portion 52 away from the first main body portion 51, that is, the first main body portion 51 and the third main body portion 54 are located on opposite sides of the second main body portion 52. The first main body portion 51, the second main body portion 52, and the third main body portion 54 can be used to enclose a vertically placed "U" - shaped structure, and the opening of the "U" - shaped structure faces the side wall of the box body 1. One end of the third main body portion 54 is connected to the second main body portion 52, and the other end is connected to the box body 1.

[0124] The third main body portion 54 can be connected to the second main body portion 52 and the box body 1 by means of threaded connection, etc., for increasing the contact area and connection points between the first mounting bracket 5 and the box body 1, thereby enhancing the connection stability between the first mounting bracket 5 and the box body 1. Along the thickness direction of the high - voltage box 20, the lower side of the first mounting bracket 5 is connected to the box body 1 through the first fitting portion 511 and the second fitting portion 512, and the upper part of the first mounting bracket 5 is connected to the box body 1 through the third main body portion 54, which can be beneficial to reducing the possibility of the first mounting bracket 5 shaking during transportation and use, thereby being beneficial to enhancing the installation stability of the circuit breaker 3 and better meeting the actual usage requirements.

[0125] As Figure 7 shown, in a possible implementation manner, the high - voltage box 20 further includes a first insulating member 7, as Figure 8As shown, the first insulating member 7 includes a first body portion 71, a second body portion 72, and a third body portion 73. The first body portion 71 and the third body portion 73 are located on opposite sides of the second body portion 72 and each form an angle with the second body portion 72. The second body portion 72 and the third body portion 73 are used to enclose an accommodation space, and the circuit breaker 3 is disposed in the corresponding accommodation space.

[0126] The first insulating member 7 can be in a "U" shape structure, covering and disposed outside the circuit breaker 3 for insulation, reducing the possibility of contact between adjacent circuit breakers 3, thereby enhancing the working stability and safety of the high-voltage box 20.

[0127] As Figure 8 shown, in a possible implementation, the first insulating member 7 may further include an avoidance groove 74 for avoiding the connection position between the circuit breaker 3 and the first mounting bracket 5.

[0128] The avoidance groove 74 can be provided in the second body portion 72. During assembly, in the thickness direction of the high-voltage box 20, the first body portion 71 and the third body portion 73 are located on opposite sides of the circuit breaker 3, and the second body portion 72 is located on the side of the circuit breaker 3 facing the second main body portion 52. By providing the avoidance groove 74, the interference of the first insulating member 7 on the connection position between the circuit breaker 3 and the first mounting bracket 5 can be reduced, thereby reducing the influence of the connecting member 4 on the mounting stability of the circuit breaker 3, which better meets the actual usage requirements.

[0129] In a possible implementation, the first insulating member 7 can be insulating paper.

[0130] The insulating paper has good insulation performance and high strength, can withstand the pressure of the high-voltage electric field and mechanical stress, and can be used to ensure the normal operation of the high-voltage box 20. At the same time, the insulating paper also has good heat resistance and cold resistance, and can adapt to different environments when the high-voltage box 20 is applied outdoors, which better meets the actual usage requirements.

[0131] As Figure 6 shown, in a possible implementation, the connecting member 4 includes a first connecting section 41, a second connecting section 42, and at least one transition section 43. The first connecting section 41 and the second connecting section 42 are connected by the transition section 43, and the transition section 43 forms an angle with the first connecting section 41 and / or the second connecting section 42. The first connecting section 41 is electrically connected to the circuit breaker 3, the second connecting section 42 is electrically connected to the electronic component 2, and the connecting member 4 can be installed on or removed from the high-voltage box 20 together with the circuit breaker 3.

[0132] The connecting piece 4 can be a multi-section structure. The relative positions of the first connecting section 41 and the second connecting section 42 are set according to the relative positions between the circuit breaker 3 and the electronic component 2, and are connected through a transition section 43, so that the relative position between the circuit breaker 3 and the electronic component 2 is more flexible, thereby improving the utilization rate of the internal space of the high-voltage box 20, which is beneficial to reducing the volume of the high-voltage box 20.

[0133] In a possible implementation, the extension direction of the first connection section 41 and the extension direction of the second connection section 42 may be parallel, and one or more transition sections 43 may be included between the first connection section 41 and the second connection section 42. The connector 4 may be integrally formed or may be a segmented structure, connected by mounting members such as screws and bolts or by welding, bonding, and the like.

[0134] When the connecting member 4 is integrally formed, the overall shape is better, and it has better strength and precision.

[0135] When the connector 4 is a segmented structure, the structure of the connector 4 is more flexible, and transition sections 43 of different structures can be pre-processed. During assembly, a suitable transition section 43 can be selected for assembly according to actual needs.

[0136] like Figure 6 As shown, in a possible implementation, at least part of the first connection section 41 is located on a side of the second main body 52 close to the circuit breaker 3, and at least part of the second connection section 42 is located on a side of the second main body 52 away from the circuit breaker 3. In the width direction of the second main body 52, the first connection section 41 and the second connection section 42 can extend beyond the range of the second main body 52, that is, along the thickness direction of the second main body 52, the second main body 52 may not be provided in a partial area between the first connection section 41 and the second connection section 42. Such a design can facilitate the provision of the transition section 43, reduce the possibility of interference between the connector 4 and the first mounting bracket 5, and better meet actual use requirements.

[0137] like Figure 7 As shown, in a possible implementation, the high-voltage box 20 includes an arc extinguishing member 8 and a second insulating member 9, the arc extinguishing member 8 is located at the incoming line end of the circuit breaker 3, the second insulating member 9 is located at the outgoing line end of the circuit breaker 3, the connector 4 includes a first connector 44 and a second connector 45, the electronic component 2 includes a fuse 21 and a relay 22, one end of the first connector 44 is electrically connected to the positive pole of the outgoing line end of the circuit breaker 3, and the other end is electrically connected to the fuse 21. One end of the second connector 45 is electrically connected to the negative pole of the outgoing line end of the circuit breaker 3, and the other end is electrically connected to the relay 22.

[0138] The arc extinguishing member 8 is used to make the arc contact with a solid to reduce the arc temperature, thereby accelerating the arc extinguishing, thereby improving safety and extending the service life of the high-voltage box 20. The second insulating member 9 is located between the first connecting member 44 and the second connecting member 45 and is used to insulate the first connecting member 44 and the second connecting member 45, reducing the possibility of electrical connection between the first connecting member 44 and the second connecting member 45 causing a short circuit, thereby improving the safety and stability of the high-voltage box 20.

[0139] like Fig. 9 As shown, in a possible embodiment, the high-voltage box 20 includes a second mounting bracket 13, the second mounting bracket 13 is located in the mounting cavity, the second mounting bracket 13 includes a mounting portion 131 and a supporting portion 132, the supporting portion 132 is connected to the mounting portion 131, the mounting portion 131 is used to mount the electronic component 2, and the supporting portion 132 is connected to the box body 1. Along the thickness direction of the high-voltage box 20, there is a gap between the mounting portion 131 and the bottom wall of the accommodating cavity 11, one of the fuse 21 and the relay 22 is located on the side of the mounting portion 131 away from the bottom wall of the accommodating cavity 11, and the other is located on the side of the mounting portion 131 close to the bottom wall of the accommodating cavity 11.

[0140] Through such a design, the fuse 21 and the relay 22 can be respectively arranged along the height direction of the high-voltage box 20, thereby improving the utilization rate of the internal space of the high-voltage box 20 and reducing the space occupied by the electronic components 2 in the plane of the length and width directions of the high-voltage box 20. It is convenient to optimize the internal layout of the high-voltage box 20, thereby reducing the volume of the high-voltage box 20 and better meeting actual usage requirements.

[0141] like Fig.10 As shown, in a possible implementation manner, the circuit breaker 3 is provided with a mounting slot 31, such as Fig.11 As shown, the arc extinguishing member 8 is provided with a third matching portion 81 , and at least a portion of the third matching portion 81 can extend into the installation groove 31 .

[0142] During installation, the arc extinguishing member 8 can be slidably matched with the installation groove 31 through the third matching portion 81, driving the arc extinguishing member 8 to move to a predetermined position along the installation groove 31. Such a design can improve the stability of the connection between the arc extinguishing member 8 and the third matching portion 81, and at the same time, the operation difficulty is low, which is more in line with actual use requirements.

[0143] like Figure 6As shown, in a possible implementation manner, the high-voltage box 20 further includes a stopper 55 connected to the second main body 52. ​​The stopper 55 is located on the side of the arc extinguishing member 8 away from the segment force, and is used to limit the movement of the arc extinguishing member 8 relative to the circuit breaker 3. Along the installation direction of the arc extinguishing member 8, the stopper 55 can be located on the side of the arc extinguishing member 8 away from the circuit breaker 3, and the stopper 55 can abut against the arc extinguishing member 8 to limit the arc extinguishing member 8 from moving in a direction opposite to the installation direction, thereby limiting the arc extinguishing member 8 from being separated from the circuit breaker 3.

[0144] By setting the block 55, the arc extinguishing member 8 can be limited, thereby improving the stability of the installation of the arc extinguishing member 8 and reducing the possibility of the arc extinguishing member 8 detaching from the circuit breaker 3, which is beneficial to improving the safety and stability of the high-voltage box 20 and better meets actual usage requirements.

[0145] In a possible implementation, the block 55 can be connected to a side of the second main body 52 away from the circuit breaker 3, and the block 55 can be provided with an avoidance recess to allow structures such as the connector 4 to reduce the possibility of interference between the block 55 and other structures inside the high-voltage box 20.

[0146] like Figure 2 and Figure 7 As shown, in a possible implementation, the circuit breaker 3 includes a connecting rod 32, the high-voltage box 20 is provided with a connecting hole and a control member 14, the control member 14 is located outside the box body 1, and at least a portion of the connecting rod 32 can pass through the connecting hole to connect with the control member 14.

[0147] With such a design, the circuit breaker 3 can be controlled by the control component 14, which is more in line with actual usage requirements.

[0148] like Figure 2 As shown, in a possible implementation manner, the high-voltage box 20 further includes a connector 15 , which is located outside the box body 1 , and the incoming line end of the circuit breaker 3 is connected to the connector 15 .

[0149] The connector 15 can be used to electrically connect to the battery compartment.

[0150] When assembling the high-voltage box 20 provided in the embodiment of the present application, the first insulating member 7 may be provided on the first mounting bracket 5 and the circuit breaker 3 may be fixedly connected to the first mounting bracket 5. The first insulating member 7 may be provided along the circumference of the circuit breaker 3 to protect the circuit breaker 3. Connectors 4 such as copper bars are correspondingly installed at the inlet and outlet ends of the circuit breaker 3. After at least two circuit breakers 3 are installed on the first mounting bracket 5 as required, the first mounting bracket 5, the circuit breaker 3 and the connecting member 4 are installed together on the box body 1.

[0151] Through such a design, the circuit breaker 3, the connector 4 and the first mounting bracket 5 can be modularized. By performing modular installation outside the high-voltage box 20, the space requirement for the box body 1 can be reduced, and the requirement for operating space is small, so the volume of the high-voltage box 20 can be reduced. At the same time, the installation operation outside the box can have a larger operating space, thereby reducing the difficulty of operation, making the assembly more convenient and quick, thereby improving the assembly efficiency of the high-voltage box 20 and more in line with actual use requirements.

[0152] Based on the high-voltage box 20 provided in the above embodiments, the embodiment of the present application further provides an energy storage system, which includes an energy storage cabinet 10, a high-voltage box 20 and at least two energy storage converters 30. The high-voltage box 20 and the energy storage converter 30 are located in the energy storage cabinet 10, and the energy storage cabinet 10 can be a container or other structure. The energy storage converter 30 is electrically connected to the incoming line terminal of the circuit breaker 3 of the high-voltage box 20. The high-voltage box 20 can be the high-voltage box 20 involved in any of the above embodiments. Since the high-voltage box 20 has the above technical effects, the energy storage system including the high-voltage box 20 also has corresponding technical effects, which will not be repeated here.

[0153] like Fig.12 As shown, an embodiment of the present application provides an energy storage cabinet 10, in which a high-voltage box 20 and an energy storage inverter 30 are installed in the cavity of the energy storage cabinet 10, and the energy storage inverter 30 is located on one side of the high-voltage box 20. In a possible embodiment, the high-voltage box 20 is located on a side of the energy storage inverter 30 close to the cabinet door of the energy storage cabinet 10, that is, the setting position of the high-voltage box 20 is further outward than the energy storage inverter 30. At least two energy storage inverters 30 are located on a side of the high-voltage box 20 away from the cabinet door and are arranged in sequence. The electronic component 2 is arranged on a side of the high-voltage box 20 close to the energy storage inverter 30. Through such a design, it is convenient to electrically connect the electronic component 2 with the energy storage inverter 30, and reduce the wiring distance of the electrical connection structure such as the copper busbar in the high-voltage box 20, so that the internal structure of the high-voltage box 20 can be optimized, which is conducive to reducing the volume of the high-voltage box 20. Since the width of the energy storage cabinet 10 is limited, the energy storage inverter 30 needs to be arranged on one side of the high-voltage box 20 along the depth direction of the cavity, that is, the energy storage inverter 30 is located on the side of the high-voltage box 20 away from the cabinet door, thereby saving space in the width direction of the energy storage cabinet 10, which is conducive to reducing the size of the energy storage cabinet 10.

[0154] like Fig.12As shown, along the width direction of the energy storage cabinet 10, the circuit breaker 3 and the electronic component 2 are located on the same side of the high-voltage box 20, and the other side can be used to install components such as AC output copper busbars, pre-charging resistors, and cooling fans. The DC input is electrically connected to the input terminal of the circuit breaker 3 through the connector 15, the positive pole of the output terminal of the circuit breaker 3 is electrically connected to the fuse 21, the output terminal of the fuse 21 is electrically connected to the relay 22, the negative pole of the output terminal of the circuit breaker 3 is electrically connected to the relay 22, and the output terminal of the relay 22 is electrically connected to the energy storage converter 30. The positive pole of the output terminal of the circuit breaker 3 is electrically connected to the negative pole of the output terminal and the same relay after passing through the fuse 21. Taking the high-voltage box 20 including two circuit breakers 3 as an example, the high-voltage box 20 also includes two fuses 21 and two relays 22. The positive pole of the output end of the first circuit breaker is electrically connected to the first fuse, the output end of the first fuse is electrically connected to the first relay, and the negative pole of the output end of the first circuit breaker is electrically connected to the first relay. The positive pole of the output end of the second circuit breaker is electrically connected to the second fuse, the output end of the second fuse is electrically connected to the second relay, and the negative pole of the output end of the second circuit breaker is electrically connected to the second relay. The output end of the relay leads to the positive output and the negative output respectively, that is, the side of the high-voltage box 20 close to the energy storage converter 30 has four connection terminals 201 for electrically connecting to the energy storage converter 30.

[0155] The embodiment of the present application provides an energy storage system, which includes an energy storage cabinet 10, a high-voltage box 20 and at least two energy storage converters 30, the high-voltage box 20 and the energy storage converter 30 are located in the energy storage cabinet 10, and the energy storage converter 30 is electrically connected to the high-voltage box 20; the high-voltage box 20 includes a box body 1 with a receiving cavity 11, at least two circuit breakers 3 electrically connected to the electronic component 2 through a connector 4, and a first mounting bracket 5 for mounting the circuit breaker 3. Among them, the first mounting bracket 5 includes a first main body 51 and a second main body 52 connected to each other, the first main body 51 is detachably mounted in the receiving cavity 11, along the height direction of the high-voltage box 20, each circuit breaker 3 is sequentially mounted on the second main body 52, the circuit breaker 3 can be installed on the high-voltage box 20 or removed from the high-voltage box 20 with the first mounting bracket 5, the electronic component 2 is located on the side of the second main body 52 away from the circuit breaker 3, and the high-voltage box 20 also includes at least one support member 6, one end of the support member 6 is connected to the connector 4, and the other end is connected to the first mounting bracket 5. Such a design can help reduce the volume of the high-voltage box 20, reduce assembly difficulty, and improve production efficiency.

[0156] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An energy storage system, characterized in that: The energy storage system includes an energy storage cabinet, a high-voltage box and at least two energy storage converters. The high-voltage box and the energy storage converter are located in the energy storage cabinet, and the energy storage converter is electrically connected to the high-voltage box. The high-voltage box includes: A box body, wherein the box body is provided with a containing cavity; An electronic component, wherein the electronic component is located in the accommodating cavity; at least two circuit breakers, the circuit breakers being electrically connected to the electronic components via connectors; a first mounting bracket, the first mounting bracket being used to mount the circuit breaker on the box; Wherein, the first mounting bracket comprises a first main body portion and a second main body portion connected to each other, the first main body portion is detachably mounted in the accommodating cavity, and along the height direction of the high-voltage box, each of the circuit breakers is sequentially mounted on the second main body portion, and the electronic component is located on a side of the second main body portion away from the circuit breaker; The electronic components include fuses and relays; The high-voltage box includes a second mounting bracket, the second mounting bracket is located in the accommodating cavity, the second mounting bracket includes a mounting portion and a supporting portion, the supporting portion is located between the mounting portion and the bottom wall of the accommodating cavity with a spacing, the supporting portion is connected to the box body, one of the fuse and the relay is located on a side of the mounting portion away from the bottom wall of the accommodating cavity, and the other is located on a side of the mounting portion close to the bottom wall of the accommodating cavity; The first main body portion and the second main body portion have an included angle; Each of the circuit breakers is used to control one of the energy storage converters, and each of the circuit breakers is sequentially mounted on the second main body of the first mounting bracket along the thickness direction of the high-voltage box; The energy storage cabinet includes a cabinet door, the high-voltage box is located on a side of the energy storage inverter close to the cabinet door, at least two of the energy storage inverters are located on a side of the high-voltage box away from the cabinet door, and the electronic components are arranged on a side of the high-voltage box close to the energy storage inverter; at least two of the energy storage inverters are located on a side of the high-voltage box away from the cabinet door and are arranged in sequence.

2. The energy storage system according to claim 1, characterized in that: The box body is provided with a clamping portion, and the first mounting bracket is provided with a first matching portion. The clamping portion is disposed on the bottom wall of the accommodating cavity and protrudes in a direction away from the bottom wall, and the angle between the clamping portion and the bottom wall is an acute angle; The space between the clamping portion and the bottom wall is a clamping space, and at least a portion of the first matching portion can extend into the clamping space; The first matching portion is provided with at least one matching groove. When the clamping portion is matched with the first matching portion, at least part of the clamping portion is located in the matching groove. The clamping portion and the first matching portion cooperate to limit the relative position of the first mounting bracket and the box body.

3. The energy storage system according to claim 2, characterized in that: The first main body is provided with at least one second matching portion, and the second matching portion is connected to the high-voltage box through a mounting member. Along the length direction of the first main body, the first matching portion and the second matching portion are located at opposite ends of the first main body.

4. The energy storage system according to claim 1, characterized in that: The high-voltage box comprises at least one support member, one end of the support member is connected to the connecting member, and the other end is connected to the first mounting bracket, at least one of the support members is connected to a side of the second main body away from the circuit breaker, and / or; The first mounting bracket is provided with a flange, and an angle is formed between the flange and the first main body and / or the second main body, and at least one of the support members is connected to the flange.

5. The energy storage system according to any one of claims 1 to 4, characterized in that: The first mounting bracket also includes a third main body portion, which is located on a side of the second main body portion away from the first main body portion, one end of the third main body portion is connected to the second main body portion, and the other end of the third main body portion is connected to the box body.

6. The energy storage system according to any one of claims 1 to 4, characterized in that: The high-voltage box also includes a first insulating member, which includes a first main body portion, a second main body portion and a third main body portion. The first main body portion and the third main body portion are located on opposite sides of the second main body portion and have an angle between the second main body portions. The first main body portion, the second main body portion and the third main body portion are used to enclose a accommodating space, and the circuit breaker is located in the corresponding accommodating space.

7. The energy storage system according to any one of claims 1 to 4, characterized in that: The connecting piece includes a first connecting section, a second connecting section and at least one transition section, the first connecting section and the second connecting section are connected through the transition section, an angle is formed between the transition section and the first connecting section and / or the second connecting section, the first connecting section is electrically connected to the circuit breaker, the second connecting section is electrically connected to the electronic component, and the connecting piece can be installed on the high-voltage box or removed from the high-voltage box along with the circuit breaker.

8. The energy storage system according to any one of claims 1 to 4, characterized in that: The high-voltage box includes an arc-extinguishing member and a second insulating member, the arc-extinguishing member is located at the incoming line end of the circuit breaker, and the second insulating member is located at the outgoing line end of the circuit breaker. The connecting member includes a first connecting member and a second connecting member, one end of the first connecting member is electrically connected to the positive pole of the outgoing line end of the circuit breaker, and the other end is electrically connected to the fuse, one end of the second connecting member is electrically connected to the negative pole of the outgoing line end of the circuit breaker, and the other end is electrically connected to the relay, and at least a portion of the second insulating member is located between the first connecting member and the second connecting member.

9. The energy storage system according to claim 8, characterized in that: The circuit breaker is provided with a mounting groove, the arc extinguishing member is provided with a third matching portion, and at least a portion of the third matching portion can extend into the mounting groove; The high-voltage box further comprises a stopper connected to the second main body portion. The stopper is located at a side of the arc extinguishing member away from the circuit breaker and is used to limit the movement of the arc extinguishing member relative to the circuit breaker.

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