Energy storage system control box and energy storage system

Abstract

The utility model discloses an energy storage system control box and an energy storage system, and belongs to the technical field of energy storage control, the energy storage system control box comprises a shell, a control loop and a cover body, the shell comprises a first plate body and is provided with a cavity and an opening, and the first plate body is used for defining the cavity; the control loop is arranged on the first plate body and is arranged in the cavity; the cover body is connected with the shell and covers the opening. The energy storage system comprises the energy storage system control box, a battery cluster and an energy storage converter, the positive electrode of the battery cluster and the first sub-loop are connected with the energy storage converter, and the negative electrode of the battery cluster and the second sub-loop are connected with the energy storage converter. According to the energy storage system control box, the multiple control loops are arranged in the energy storage system control box so as to be connected with and monitor the corresponding battery clusters, the multiple control loops are arranged at intervals in the first direction, electronic components of the control loops corresponding to the battery clusters are concentrated in the corresponding areas, and assembling and connecting of the electronic components are facilitated.

Description

Technical Field

[0001] This application belongs to the technical field of energy storage control, and particularly relates to an energy storage system control box and an energy storage system. Background Art

[0002] The main control box of the energy storage system is a high-voltage power circuit management unit specially designed for the liquid-cooled energy storage system, and is an intermediate unit connecting the battery cluster and the energy storage converter; due to the battery capacity requirements and design requirements, multiple battery clusters are often designed in the energy storage system, and the main control box of the energy storage system needs to perform separate control for each battery cluster, which inevitably increases the number of electronic components in the main control box of the energy storage system and increases the assembly difficulty. Summary of the Utility Model

[0003] Purpose of the Utility Model: This application develops an energy storage system control box and an energy storage system, aiming to solve the technical problems of a large number of electronic components and high assembly difficulty in the main control box of the existing energy storage system.

[0004] Technical Solution: In a first aspect, an embodiment of this application provides an energy storage system control box having a first direction, and the energy storage system control box includes:

[0005] A housing, the housing includes a first plate body, the housing has a chamber and an opening, the opening is communicated with the chamber, and the first plate body is used for enclosing the chamber;

[0006] A plurality of control circuits, the control circuits are arranged on the first plate body and in the chamber; the plurality of control circuits are arranged at intervals along the first direction;

[0007] A cover body, the cover body is connected to the housing and seals the opening.

[0008] In some embodiments, along the first direction, two adjacent control circuits are symmetrically arranged.

[0009] In some embodiments, the energy storage system control box further includes a connection component, the connection component is arranged in the chamber, and the connection component connects two adjacent control circuits.

[0010] In some embodiments, the control circuit includes a first sub-circuit and a second sub-circuit;

[0011] The connection component includes:

[0012] A first connecting piece, the first connecting piece is arranged in the chamber and serially connects two adjacent first sub-circuits;

[0013] A second connecting piece, the second connecting piece is arranged in the chamber and serially connects two adjacent second sub-circuits.

[0014] In some embodiments, the housing further includes a second plate body for enclosing to form the chamber;

[0015] The energy storage system control box further includes:

[0016] A first terminal disposed on the second plate body and at least partially outside the housing; the first terminal is connected in series with the first sub-circuit;

[0017] A second terminal disposed on the second plate body and at least partially outside the housing; the second terminal is connected in series with the second sub-circuit;

[0018] A third terminal disposed on the second plate body and at least partially outside the housing; the third terminal is connected to the first connector;

[0019] A fourth terminal disposed on the second plate body and outside the housing; the fourth terminal is connected to the second connector.

[0020] In some embodiments, the control circuit further includes a disconnect switch, and the disconnect switch includes:

[0021] A first switch component connected in series between the first terminal and the first sub-circuit;

[0022] A second switch component connected in series between the second terminal and the second sub-circuit.

[0023] In some embodiments, the energy storage system control box further has a second direction intersecting with the first direction, and the energy storage system control box further includes:

[0024] A fire-fighting device connected to the first plate body and disposed in the chamber; along the second direction, the control circuit is spaced apart from the fire-fighting device;

[0025] A fire-fighting pipeline at least partially disposed in the chamber and connected to the fire-fighting device, and the fire-fighting pipeline penetrates the second plate body.

[0026] In some embodiments, both the first sub-circuit and the second sub-circuit include a plurality of electronic components, and the minimum distance between any two of the electronic components is a mm, where a ≥ 15.

[0027] In some embodiments, the energy storage system control box further includes:

[0028] A seal, which is connected to the housing and disposed at the opening, and is disposed between the housing and the cover;

[0029] A first fastener, which includes a first connecting portion and a first pressing portion; at least a part of the first connecting portion is connected to the housing and disposed at the opening; the first pressing portion is connected to the first connecting portion, and is disposed on a side of the housing close to the cover and penetrates through the seal; the first fastener has a first connecting hole, and the first connecting hole faces the cover;

[0030] A second fastener, which includes a second connecting portion and a second pressing portion; the second connecting portion is connected to the first fastener and at least a part of it is disposed in the first connecting hole; the second pressing portion is connected to the second connecting portion and is disposed on a side of the cover away from the seal; the second connecting portion penetrates through the cover and is connected to the second pressing portion;

[0031] Wherein, along the direction from the opening towards the cover, the seal has a minimum thickness b, and the first pressing portion has a minimum thickness c, satisfying: b = c.

[0032] In a second aspect, an embodiment of the present application further provides an energy storage system, including the energy storage system control box according to any one of the first aspect.

[0033] Advantageous effects: Compared with the prior art, an energy storage system control box provided by an embodiment of the present application includes a housing, a control circuit and a cover. The housing includes a first plate body and has a chamber and an opening. The first plate body is used to enclose the chamber; the control circuit is disposed on the first plate body and in the chamber; the cover is connected to the housing and seals the opening; in the present application, a plurality of control circuits are provided to respectively connect and monitor corresponding battery clusters. The plurality of control circuits are spaced along a first direction, so that the electronic components of the control circuit corresponding to each battery cluster are concentrated in the corresponding area, which is convenient for the assembly and connection of the electronic components. Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0035] Figure 1 It is a top view (the cover is not shown) of the energy storage system control box provided by the embodiment of the present application;

[0036] Figure 2Structural diagram of two adjacent control circuits in the energy storage system control box provided by the embodiment of the present application;

[0037] Figure 3 Side view of the energy storage system control box provided by the embodiment of the present application (the cover is not shown);

[0038] Figure 4 First three-dimensional view of the energy storage system control box provided by the embodiment of the present application (the cover is not shown);

[0039] Figure 5 Second three-dimensional view of the energy storage system control box provided by the embodiment of the present application;

[0040] Figure 6 Exploded three-dimensional view of the energy storage system control box provided by the embodiment of the present application;

[0041] Figure 7 Structural schematic diagram of the disconnector in the energy storage system control box provided by the embodiment of the present application;

[0042] Figure 8 Cross-sectional structural schematic diagram of the housing, seal, cover, first fastener and second fastener in the energy storage system control box provided by the embodiment of the present application;

[0043] Figure 9 Cross-sectional structural schematic diagram of the housing, seal, cover, first fastener and second fastener when the first fastener is a press rivet nut and the second fastener is a countersunk head screw in the energy storage system control box provided by the embodiment of the present application;

[0044] Reference numerals: 10, housing; 11, first plate body; 12, chamber; 13, opening; 14, second plate body; 15, first terminal; 16, second terminal; 17, third terminal; 18, fourth terminal; 19, switch handle; 20, control circuit; 21, first sub-circuit; 22, second sub-circuit; 23, disconnector; 231, first switch assembly; 232, second switch assembly; 24, overcurrent protection component; 25, first switch component; 26, shunt; 30, cover; 40, fire protection device; 41, fire protection pipeline; 50, connection component; 51, first connection member; 52, second connection member; 70, monitoring component; 80, power supply; 90, resistor; 100, pull handle; 110, seal; 120, first fastener; 121, first connection portion; 122, first pressing portion; 123, first connection hole; 130, second fastener; 131, second connection portion; 132, second pressing portion; X, first direction; Y, second direction. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a 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 those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0046] The main control box of the energy storage system is a high-voltage power circuit management unit specially designed for the liquid-cooled energy storage system. It is an intermediate unit connecting the battery cluster and the energy storage converter. The main control box is built-in with an energy storage battery management and control module, which can realize the communication functions between the main control box and the energy storage battery management module, the host of the energy storage battery management system, and the energy storage converter, and realize the control, protection, and data communication functions of the energy storage battery cluster.

[0047] However, due to the battery capacity requirements and design requirements, multiple battery clusters are often designed in the energy storage system. The main control box of the energy storage system needs to perform separate control for each battery cluster, which inevitably increases the number of electronic components in the main control box of the energy storage system and makes the assembly difficulty increase.

[0048] In view of this, an embodiment of the present application provides an energy storage system control box, which includes a housing 10, a control circuit 20, and a cover 30. The housing 10 includes a first plate 11 and has a chamber 12 and an opening 13. The first plate 11 is used to enclose the chamber 12; the control circuit 20 is arranged on the first plate 11 and is arranged in the chamber 12; the cover 30 is connected to the housing 10 and seals the opening 13; in the present application, multiple control circuits 20 are provided to respectively connect and monitor the corresponding battery clusters, and the multiple control circuits 20 are arranged at intervals along the first direction X, so that the electronic components of the control circuit 20 corresponding to each battery cluster are concentrated in the corresponding area, which is convenient for the assembly and connection of the electronic components.

[0049] In some embodiments, please refer to Figures 1 to 7 , and next, a detailed introduction to the energy storage system control box provided by the embodiments of the present application will be given:

[0050] In some embodiments, please refer to Figure 1 , Figure 4 and Figure 6 , Figure 1 is a top view of the energy storage system control box provided by the embodiments of the present application without showing the cover 30, Figure 4 is a first perspective view of the energy storage system control box provided by the embodiments of the present application without showing the cover 30, Figure 6Exploded perspective view of the energy storage system control box provided by the embodiment of the present application. The energy storage system control box provided by the embodiment of the present application includes a housing 10, and the housing 10 is used to load the electronic components in the energy storage system control box; specifically, the housing 10 includes a first plate body 11, and all the electronic components in the energy storage system control box are installed on the first plate body 11. The housing 10 has a chamber 12 and an opening 13, and the opening 13 communicates with the chamber 12. The first plate body 11 is used to enclose the chamber 12. Further, the housing 10 is a rectangular box, and the first plate body 11 is the bottom plate of the rectangular box of the housing 10. It can be understood that when installing the electronic components in the energy storage system control box, the electronic components enter the chamber 12 through the opening 13 and are installed and fixed on the first plate body 11.

[0051] In some embodiments, please refer to Figure 1 and Figure 2 , Figure 1 is a top view of the energy storage system control box provided by the embodiment of the present application without showing the cover body 30, Figure 2 is a structural diagram of two adjacent control circuits 20 in the energy storage system control box provided by the embodiment of the present application. The electronic components in the energy storage system control box provided by the embodiment of the present application include a control circuit 20. It can be understood that the control circuit 20 is arranged on the first plate body 11 as an electronic component in the energy storage system control box and is arranged in the chamber 12.

[0052] In some embodiments, please refer to Figure 1 and Figure 2 , Figure 1 is a top view of the energy storage system control box provided by the embodiment of the present application without showing the cover body 30, Figure 2 is a structural diagram of two adjacent control circuits 20 in the energy storage system control box provided by the embodiment of the present application. A plurality of control circuits 20 are provided and are arranged at intervals along the first direction X. Specifically, due to the space requirements of the container, each energy storage system control box needs to control two battery clusters, so two control circuits 20 are designed in the present application, and the two control circuits 20 are respectively connected to the two battery clusters. It can be understood that the number of control circuits 20 corresponds to the number of battery clusters in the container space. When the number of battery clusters in the container space is 3, 4, 5 or other numbers, the number of control circuits 20 is also correspondingly set to 3, 4, 5 or other numbers.

[0053] In some embodiments, please refer to Figure 5 , Figure 6 , Figure 8 and Figure 9 , Figure 5 is the second perspective view of the energy storage system control box provided by the embodiment of the present application, Figure 6 is the exploded perspective view of the energy storage system control box provided by the embodiment of the present application, Figure 8A schematic cross-sectional structure diagram of a housing 10, a seal 110, a cover 30, a first fastener 120, and a second fastener 130 in a control box of an energy storage system provided by an embodiment of the present application. Figure 9 A schematic cross-sectional structure diagram of a housing 10, a seal 110, a cover 30, a first fastener 120, and a second fastener 130 in a control box of an energy storage system provided by an embodiment of the present application when the first fastener 120 is a blind rivet nut and the second fastener 130 is a countersunk screw. The control box of the energy storage system provided by the embodiment of the present application further includes a cover 30, a seal 110, a first fastener 120, and a second fastener 130. The seal 110 is connected to the housing 10 and is disposed at an opening 13. The seal 110 is disposed between the housing 10 and the cover 30 to achieve a sealed connection between the housing 10 and the cover 30. The first fastener 120 includes a first connection portion 121 and a first pressing portion 122. At least a part of the first connection portion 121 is connected to the housing 10 and is disposed at the opening 13. The first pressing portion 122 is connected to the first connection portion 121, is disposed on a side of the housing 10 close to the cover 30, and penetrates through the seal 110. The first fastener 120 has a first connection hole 123, and the first connection hole 123 faces the cover 30. The second fastener 130 includes a second connection portion 131 and a second pressing portion 132. The second connection portion 131 is connected to the first fastener 120 and is at least partially disposed in the first connection hole 123. The second pressing portion 132 is connected to the second connection portion 131 and is disposed on a side of the cover 30 away from the seal 110. The second connection portion 131 penetrates through the cover 30 and is connected to the second pressing portion 132. Wherein, along the direction from the opening 13 towards the cover 30, the seal 110 has a minimum thickness b, and the first pressing portion 122 has a minimum thickness c, satisfying: b = c. Specifically, the seal 110 is a foamed silicone waterproof strip. When connecting the cover 30 and the housing 10, the compression ratio of the foamed silicone is 40% - 60%. In the embodiment of the present application, the compression ratio of the foamed silicone is preferably 50%. Exemplarily, before connecting the cover 30 and the housing 10, the thickness of the foamed silicone coated is 5 mm. When connecting the cover 30 and the housing 10, the thickness of the foamed silicone is compressed to 50%. It can be understood that the foamed silicone generates the seal 110 after being compressed by 50%, and the thickness of the seal 110 is 2.5 mm, which is the same as the height of the first pressing portion 122. Specifically, the first fastener 120 is a blind rivet nut, and the second fastener 130 is a countersunk screw. The blind rivet nut is connected to the housing 10 and penetrates through the seal 110. The countersunk screw penetrates through the cover 30 and connects to the blind rivet nut to achieve a sealed connection between the cover 30 and the housing 10, and the protection level reaches IP55.

[0054] In some embodiments, the compression ratio of the foamed silica gel can be any value among 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60% or a value between any two of them.

[0055] In some embodiments, the thickness of the coated foamed silica gel can be any value among 3mm, 4mm, 5mm, 6mm, 7mm, 8mm or a value between any two of them, and the thickness of the formed seal 110 after compression corresponds to any value among 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm or a value between any two of them.

[0056] In some embodiments, please refer to Figure 1 and Figure 2 , Figure 1 is a top view of the energy storage system control box provided by the embodiment of the present application without showing the cover 30. Figure 2 is a structural diagram of two adjacent control circuits 20 in the energy storage system control box provided by the embodiment of the present application. Along the first direction X, two adjacent control circuits 20 are symmetrically arranged so that the electronic components in the control circuit 20 are symmetrically arranged one by one along the first direction X, which is convenient for production and assembly. Further, the two control circuits 20 in the present application are mirror-symmetrically arranged.

[0057] In some embodiments, please refer to Figure 1 , Figure 4 and Figure 6 , Figure 1 is a top view of the energy storage system control box provided by the embodiment of the present application without showing the cover 30. Figure 4 is a first perspective view of the energy storage system control box provided by the embodiment of the present application without showing the cover 30. Figure 6 is an exploded perspective view of the energy storage system control box provided by the embodiment of the present application. The energy storage system control box provided by the embodiment of the present application further includes a fire protection device 40. The fire protection device 40 is connected to the first plate body 11 and is arranged in the chamber 12. Specifically, the fire protection device 40 is a 3kg integrated perfluoroketone fire prevention and control device, which is fixed by combination screws and press rivet nuts, and can perform early detection and intelligent judgment on the fire in the battery cluster to suppress the fire in the initial stage of the fire. At the same time, it has the functions of early warning of battery thermal runaway, automatic fire extinguishing, and manual start of fire extinguishing. Specifically, the energy storage system control box provided by the embodiment of the present application further includes a fire protection pipeline 41. At least part of the fire protection pipeline 41 is arranged in the chamber 12 and is connected to the fire protection device 40. The fire protection pipeline 41 penetrates through the second plate body 14 so as to be connected to the battery cluster outside the energy storage system control box, connecting the battery cluster and the fire protection device 40, so that the fire protection device 40 can perform fire protection operations on the battery cluster through the fire protection pipeline 41.

[0058] In some embodiments, refer to Figure 1 , Figure 4 and Figure 6 , Figure 1 FIG. is a top view of the energy storage system control box provided by the embodiment of the present application, in which the cover 30 is not shown. Figure 4 FIG. is a first perspective view of the energy storage system control box provided by the embodiment of the present application, in which the cover 30 is not shown. Figure 6 FIG. is an exploded perspective view of the energy storage system control box provided by the embodiment of the present application. The energy storage system control box further has a second direction Y, and the second direction Y intersects with the first direction X. Specifically, the second direction Y is perpendicular to the first direction X. Along the second direction Y, the control circuit 20 and the fire protection device 40 are spaced apart to make full use of the space in the energy storage system control box.

[0059] In some embodiments, refer to Figure 2 , Figure 2 FIG. is a structural diagram of two adjacent control circuits 20 in the energy storage system control box provided by the embodiment of the present application. The energy storage system control box further includes a connection component 50. The connection component 50 is arranged in the chamber 12. The connection component 50 connects two adjacent control circuits 20 so that the two control circuits 20 share an output end, thereby reducing the use of components, reducing the material use cost, labor installation cost and installation complexity, and at the same time reducing the occupation of the space inside the box.

[0060] In some embodiments, the control circuit 20 includes a first sub-circuit 21 and a second sub-circuit 22. It can be understood that when the energy storage system control box is connected to the battery cluster and the energy storage inverter, the first sub-circuit 21 is used to connect the positive electrode of the battery cluster and the energy storage inverter, and the second sub-circuit 22 is used to connect the negative electrode of the battery cluster and the energy storage inverter.

[0061] In some embodiments, refer to Figure 2 , Figure 2 FIG. is a structural diagram of two adjacent control circuits 20 in the energy storage system control box provided by the embodiment of the present application. The connection component 50 specifically includes a first connection piece 51 and a second connection piece 52. The first connection piece 51 is arranged in the chamber 12 and is connected in series to two adjacent first sub-circuits 21; the second connection piece 52 is arranged in the chamber 12 and is connected in series to two adjacent second sub-circuits 22. It can be understood that two adjacent first sub-circuits 21 are both connected to the external energy storage inverter through the first connection piece 51, and two adjacent second sub-circuits 22 are both connected to the external energy storage inverter through the second connection piece 52. Two adjacent sub-circuits share a connection piece to connect to external devices, which can reduce the use of circuit devices, reduce production costs, assembly costs and the occupation of the space inside the housing 10.

[0062] In some embodiments, refer to Figure 1 , Figures 3 to 6 ,Figure 1 The top view of the cover 30 is not shown for the energy storage system control box provided by the embodiment of the present application. Figure 3 The side view of the cover 30 is not shown for the energy storage system control box provided by the embodiment of the present application. Figure 4 The first three-dimensional view of the cover 30 is not shown for the energy storage system control box provided by the embodiment of the present application. Figure 5 The second three-dimensional view of the energy storage system control box provided by the embodiment of the present application. Figure 6 The exploded three-dimensional view of the energy storage system control box provided by the embodiment of the present application. In some embodiments, the housing 10 further includes a second plate body 14, and the second plate body 14 is used to enclose a chamber 12. Specifically, the housing 10 is a rectangular box, the second plate body 14 is the side plate of the rectangular box of the housing 10, and the second plate body 14 extends along the first direction X to connect the input end and the output end of the control circuit 20, and the external control devices of other electronic components.

[0063] In some embodiments, please refer to Figure 1 and Figure 3 , Figure 1 The top view of the cover 30 is not shown for the energy storage system control box provided by the embodiment of the present application. Figure 3 The side view of the cover 30 is not shown for the energy storage system control box provided by the embodiment of the present application. The energy storage system control box provided by the embodiment of the present application further includes a first terminal 15, a second terminal 16, a third terminal 17 and a fourth terminal 18. The first terminal 15 is arranged on the second plate body 14 and at least partially arranged outside the housing 10 to be connected to the positive electrode of the target battery cluster; the first terminal 15 is connected in series with the first sub-circuit 21 so as to connect the positive electrode of the target battery cluster and the first sub-circuit 21 in series through the first terminal 15. The second terminal 16 is arranged on the second plate body 14 and at least partially arranged outside the housing 10 to be connected to the negative electrode of the target battery cluster; the second terminal 16 is connected in series with the second sub-circuit 22 so as to connect the negative electrode of the target battery cluster and the second sub-circuit 22 in series through the second terminal 16; the third terminal 17 is arranged on the second plate body 14 and at least partially arranged outside the housing 10 to be connected to an external energy storage converter; the third terminal 17 is connected to the first connector 51 to achieve the series connection of the external energy storage converter, the first sub-circuit 21 and the first terminal 15 through the third terminal 17 and the first connector 51. The fourth terminal 18 is arranged on the second plate body 14 and arranged outside the housing 10 to be connected to an external energy storage converter; the fourth terminal 18 is connected to the second connector 52 to achieve the series connection of the external energy storage converter, the second sub-circuit 22 and the second terminal 16 through the fourth terminal 18 and the second connector 52.

[0064] In some embodiments, please refer to Figure 2 , Figure 2This is a structural diagram of two adjacent control circuits 20 in the energy storage system control box provided by the embodiments of the present application. The control circuit 20 of the energy storage system control box provided by the embodiments of the present application further includes a disconnector 23, and the disconnector 23 is respectively connected in series with the first sub-circuit 21 and the second sub-circuit 22 to control the on / off of the first sub-circuit 21 and the second sub-circuit 22 through the disconnector 23. Specifically, the disconnector 23 includes a first switch component 231 and a second switch component 232. The first switch component 231 is connected in series between the first terminal 15 and the first sub-circuit 21 to control the on / off of the first sub-circuit 21 and thus control the connection between the positive electrode of the battery cluster and the energy storage converter. The second switch component 232 is connected in series between the second terminal 16 and the second sub-circuit 22 to control the on / off of the second sub-circuit 22 and thus control the connection between the negative electrode of the battery cluster and the energy storage converter.

[0065] In some embodiments, please refer to Figures 1 to 7 , Figure 1 This is a top view of the energy storage system control box provided by the embodiments of the present application without showing the cover 30. Figure 2 This is a structural diagram of two adjacent control circuits 20 in the energy storage system control box provided by the embodiments of the present application. Figure 3 This is a side view of the energy storage system control box provided by the embodiments of the present application without showing the cover 30. Figure 4 This is a first three-dimensional view of the energy storage system control box provided by the embodiments of the present application without showing the cover 30. Figure 5 This is a second three-dimensional view of the energy storage system control box provided by the embodiments of the present application. Figure 6 This is an exploded three-dimensional view of the energy storage system control box provided by the embodiments of the present application. Figure 7 This is a schematic structural diagram of the disconnector 23 in the energy storage system control box provided by the embodiments of the present application. The energy storage system control box provided by the embodiments of the present application further includes a switch handle 19. The switch handle 19 is arranged on the second plate body 14 and at least partially arranged outside the housing 10 for the staff to hold and operate; the switch handle 19 is connected to the disconnector 23 to control the opening and closing of the first switch component 231 and the second switch component 232, so as to realize the manual on / off control of the first sub-circuit 21 and the second sub-circuit 22.

[0066] In some embodiments, please refer to Figure 2 , Figure 2This is a structural diagram of two adjacent control loops 20 in the energy storage system control box provided by the embodiments of the present application. In the energy storage system control box provided by the embodiments of the present application, both the first sub-loop 21 and the second sub-loop 22 include an overcurrent protection component 24 and a first switch component 25 connected in series. The overcurrent protection component 24 is connected in series with the disconnector 23, and the first switch component 25 is connected in series with the connection component 50. Specifically, the overcurrent protection component 24 is a fuse. It can be understood that when the current of the battery cluster exceeds the rated value of the fuse, the metal wire or sheet inside it will melt, thus disconnecting the circuit to prevent further electrical faults or equipment damage, so as to provide short-circuit and overcurrent protection for the battery cluster; the first switch component 25 is a contactor. Specifically, when electronic components such as the overcurrent protection component 24 and the first switch component 25 are arranged in the first sub-loop 21 and the second sub-loop 22, there is a minimum distance of a mm between any two electronic components, a≥15. Exemplarily, in the electronic components in the first sub-loop 21 or the second sub-loop 22, the minimum distance between the overcurrent protection component 24 and the first switch component 25 is greater than or equal to 15 mm; in the first sub-loop 21 and the second sub-loop 22, the minimum distance between two overcurrent protection components 24, between two first switch components 25, between the overcurrent protection component 24 in the first sub-loop 21 and the first switch component 25 in the second sub-loop 22, and between the first switch component 25 in the first sub-loop 21 and the overcurrent protection component 24 in the second sub-loop 22 is greater than or equal to 15 mm.

[0067] In some embodiments, a can be selected as any value in 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 or a value between any two values.

[0068] In some embodiments, please refer to Figure 2 , Figure 2 This is a structural diagram of two adjacent control loops 20 in the energy storage system control box provided by the embodiments of the present application. The second sub-loop 22 in the energy storage system control box provided by the embodiments of the present application further includes a shunt 26, and the shunt 26 is connected in series between the overcurrent protection component 24 and the first switch component 25 for monitoring the magnitude of the current of the corresponding battery cluster. It can be understood that when current passes through the shunt, a voltage drop will be generated at both ends of it. By measuring this voltage drop and combining the known resistance value, the magnitude of the current can be calculated.

[0069] In some embodiments, please refer to Figure 1 and Figure 4 , Figure 1 This is a top view of the energy storage system control box provided by the embodiments of the present application without showing the cover 30. Figure 4The first perspective view of the cover 30 is not shown for the energy storage system control box provided by the embodiments of the present application. The energy storage system control box provided by the embodiments of the present application further includes a monitoring component 70, which is arranged on the first plate body 11 and in the chamber 12; along the second direction Y, the control circuit 20, the monitoring component 70 and the fire protection device 40 are arranged at intervals to reasonably plan and utilize the space in the energy storage system control box. The monitoring component 70 is communicatively connected to the control circuit 20 to detect and obtain important information during the operation of the battery cluster in real time through the control circuit 20, and exchange information with external devices to perform real-time alarm and protection during the operation of the battery cluster. Specifically, the monitoring component 70 is a Battery Control Management Unit (BCMU).

[0070] In some embodiments, please refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 6 , Figure 1 The top view of the energy storage system control box provided by the embodiments of the present application without showing the cover 30 is Figure 2 The structural diagram of two adjacent control circuits 20 in the energy storage system control box provided by the embodiments of the present application is Figure 4 The first perspective view of the energy storage system control box provided by the embodiments of the present application without showing the cover 30 is Figure 6 The exploded perspective view of the energy storage system control box provided by the embodiments of the present application. The electronic components in the energy storage system control box provided by the embodiments of the present application are all connected by copper bars to reduce the line resistance, improve the current stability, improve the working stability and reliability of the energy storage system control box, and facilitate installation and maintenance. Specifically, the disconnector 23 is connected to the first terminal 15 by a copper bar; the disconnector 23 is connected to the second terminal 16 by a copper bar; the disconnector 23, the overcurrent protection component 24 and the first switch component 25 are connected by a copper bar; the first connecting piece 51 and the second connecting piece 52 in the connecting component 50 are copper bars; the first connecting piece 51 is connected to the third terminal 17 by a copper bar; the second connecting piece 52 is connected to the fourth terminal 18 by a copper bar.

[0071] In some embodiments, please refer to Figure 1 and Figure 4 , Figure 1 The top view of the energy storage system control box provided by the embodiments of the present application without showing the cover 30 is Figure 4The first perspective view of the cover 30 is not shown for the energy storage system control box provided by the embodiment of the present application. The energy storage system control box provided by the embodiment of the present application further includes a power supply 80. The power supply 80 is arranged on the first plate body 11 and is arranged in the chamber 12. The power supply 80 is connected to the monitoring component 70 to supply power to the monitoring component 70. Specifically, the power supply 80 is connected to a UPS (Uninterruptible Power Supply) outside the energy storage system control box to obtain the power required for the operation of the energy storage system control box.

[0072] In some embodiments, please refer to Figure 1 and Figure 4 , Figure 1 The top view of the energy storage system control box provided by the embodiment of the present application without showing the cover 30 is Figure 4 The first perspective view of the energy storage system control box provided by the embodiment of the present application without showing the cover 30 is shown. The energy storage system control box provided by the embodiment of the present application further includes a resistor 90. The resistor 90 is arranged on the first plate body 11 and is arranged in the chamber 12. The resistor 90 is connected to the first switch member 25 in the first sub-circuit 21 to limit the surge current and prevent the electronic components from being damaged by the impact of large current. Specifically, the resistor 90 is an aluminum shell resistor.

[0073] In some embodiments, please refer to Figure 3 , Figure 3 The side view of the energy storage system control box provided by the embodiment of the present application without showing the cover is shown. The energy storage system control box provided by the embodiment of the present application further includes a pull handle 100. The pull handle 100 is arranged on the second plate body 14 and is arranged outside the housing 10. It is connected and fixed to the second plate body 14 through hexagon nuts and studs, which is convenient for pulling during packing. Specifically, the material of the pull handle 100 is stainless steel.

[0074] It can be understood that the energy storage system control box provided by the embodiment of the present application includes a housing 10, a control circuit 20 and a cover 30. The housing 10 includes a first plate body 11 and has a chamber 12 and an opening 13. The first plate body 11 is used to enclose the chamber 12; the control circuit 20 is arranged on the first plate body 11 and is arranged in the chamber 12; the cover 30 is connected to the housing 10 and seals the opening 13; in the present application, a plurality of control circuits 20 are provided to respectively connect and monitor the corresponding battery clusters. The plurality of control circuits 20 are arranged at intervals along the first direction X, so that the electronic components of the control circuit 20 corresponding to each battery cluster are concentrated in the corresponding area, which is convenient for the assembly and connection of the electronic components.

[0075] Correspondingly, the embodiment of the present application further provides an energy storage system, including the energy storage system control box provided by the embodiment of the present application.

[0076] In some embodiments, the energy storage system package provided by the embodiments of the present application further includes a battery cluster and an energy storage converter. The positive electrode of the battery cluster, the first sub-circuit 21 and the energy storage converter are connected, and the negative electrode of the battery cluster, the second sub-circuit 22 and the energy storage converter are connected to form a connection loop.

[0077] The above has introduced in detail an energy storage system control box and an energy storage system provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A control box for an energy storage system, characterized in that, Having a first direction (X), the energy storage system control box includes: A housing (10), the housing (10) includes a first plate body (11), the housing (10) has a chamber (12) and an opening (13), the opening (13) communicates with the chamber (12), and the first plate body (11) is used to enclose the chamber (12); A plurality of control circuits (20), the control circuits (20) are arranged on the first plate body (11) and are arranged in the chamber (12); a plurality of the control circuits (20) are arranged at intervals along the first direction (X); A cover body (30), the cover body (30) is connected to the housing (10) and seals the opening (13).

2. The energy storage system control box according to claim 1, characterized in that, Along the first direction (X), two adjacent control circuits (20) are symmetrically arranged.

3. The energy storage system control box according to claim 1, characterized in that The energy storage system control box further includes a connection component (50), the connection component (50) is arranged in the chamber (12), and the connection component (50) connects two adjacent control circuits (20).

4. The energy storage system control box according to claim 3, wherein, The control circuit (20) includes a first sub-circuit (21) and a second sub-circuit (22); The connection component (50) includes: A first connection member (51), the first connection member (51) is arranged in the chamber (12) and serially connects two adjacent first sub-circuits (21); A second connection member (52), the second connection member (52) is arranged in the chamber (12) and serially connects two adjacent second sub-circuits (22).

5. The energy storage system control box according to claim 4, characterized in that, The housing (10) further includes a second plate body (14), and the second plate body (14) is used to enclose and form the chamber (12); The energy storage system control box further includes: A first terminal (15), the first terminal (15) is arranged on the second plate body (14) and at least part of it is arranged outside the housing (10); the first terminal (15) is serially connected to the first sub-circuit (21); A second terminal (16), the second terminal (16) is arranged on the second plate body (14) and at least part of it is arranged outside the housing (10); the second terminal (16) is serially connected to the second sub-circuit (22); A third terminal (17), the third terminal (17) is arranged on the second plate body (14) and at least part of it is arranged outside the housing (10); the third terminal (17) is connected to the first connection member (51); A fourth terminal (18), the fourth terminal (18) is arranged on the second plate body (14) and is arranged outside the housing (10); the fourth terminal (18) is connected to the second connection member (52).

6. The control box of the energy storage system according to claim 5, characterized in that, The control circuit (20) further includes a disconnect switch (23), and the disconnect switch (23) includes: A first switch assembly (231), the first switch assembly (231) is serially connected between the first terminal (15) and the first sub-circuit (21); A second switch assembly (232), the second switch assembly (232) being connected in series between the second terminal (16) and the second sub-circuit (22).

7. The control box of the energy storage system according to claim 5, characterized in that The energy storage system control box further has a second direction (Y), the second direction (Y) intersecting the first direction (X), and the energy storage system control box further includes: A fire-fighting device (40), the fire-fighting device (40) being connected to the first plate body (11) and disposed in the chamber (12); along the second direction (Y), the control circuit (20) is spaced apart from the fire-fighting device (40). A fire-fighting pipeline (41), at least a part of the fire-fighting pipeline (41) being disposed in the chamber (12) and connected to the fire-fighting device (40), the fire-fighting pipeline (41) penetrating through the second plate body (14).

8. The energy storage system control box according to claim 4, wherein Both the first sub-circuit (21) and the second sub-circuit (22) include a plurality of electronic components, and a minimum distance a mm exists between any two of the electronic components, where a ≥ 15.

9. The control box of the energy storage system according to claim 1, wherein The energy storage system control box further includes: A seal (110), the seal (110) being connected to the housing (10) and disposed at the opening (13), the seal (110) being disposed between the housing (10) and the cover body (30). A first fastener (120), the first fastener (120) including a first connecting portion (121) and a first pressing portion (122); at least a part of the first connecting portion (121) is connected to the housing (10) and disposed at the opening (13); the first pressing portion (122) is connected to the first connecting portion (121) and is disposed on a side of the housing (10) close to the cover body (30) and penetrates through the seal (110); the first fastener (120) has a first connecting hole (123), and the first connecting hole (123) faces the cover body (30). A second fastener (130), the second fastener (130) including a second connecting portion (131) and a second pressing portion (132); the second connecting portion (131) is connected to the first fastener (120) and is at least partially disposed in the first connecting hole (123); the second pressing portion (132) is connected to the second connecting portion (131) and is disposed on a side of the cover body (30) away from the seal (110); the second connecting portion (131) penetrates through the cover body (30) and is connected to the second pressing portion (132). Wherein, along the direction from the opening (13) towards the cover body (30), the seal (110) has a minimum thickness b, and the first pressing portion (122) has a minimum thickness c, satisfying: b = c.

10. A energy storage system, characterized in that, Including the energy storage system control box according to any one of claims 1 to 9.

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