High-voltage box for energy storage

Abstract

The utility model discloses a high-voltage box for energy storage, which comprises a box body, an upper cover, a control device and a plurality of groups of control circuits, the control device and the control circuits are arranged in the box body, the plurality of groups of control circuits are arranged side by side, and the upper cover is arranged at the top of the box body; a plurality of power connectors are arranged on the outer side wall of the box body, and the power connectors and the control circuits are arranged in a one-to-one correspondence mode; the control circuit comprises a first connecting copper bar, a second connecting copper bar, a third connecting copper bar, a contactor and a fusible core, the first connecting copper bar, the contactor, the second connecting copper bar, the fusible core and the third connecting copper bar are sequentially connected, a first protective cover is arranged outside the contactor, and a second protective cover is arranged outside the fusible core. The high-voltage box has the technical effects that the internal structure is compact, elements of two high-voltage boxes can be integrated into one high-voltage box, and the occupied space of the high-voltage box body is reduced; the first protective cover is arranged outside the contactor, and the second protective cover is arranged outside the fusible core, so that effective protection can be formed, and the device is safer, more reliable and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemical energy storage, in particular to a high-voltage box for energy storage. Background Technique

[0002] In recent years, energy storage technology has developed rapidly in different industries, and applications such as thermal energy storage frequency modulation, new energy matching, grid-side, and user-side energy storage are very extensive. In large-scale energy storage system solutions, high-voltage boxes of different manufacturers have different design concepts and structural methods. Most manufacturers adopt a structural method in which one cluster corresponds to one high-voltage box, resulting in an increase in the volume of the system structure and an increase in the overall cost; the main electrical components inside the high-voltage box, such as contactors and fuse cores, generally adopt an exposed installation method. If the system experiences an overload phenomenon, it will cause the device to explode, and the repair is time-consuming; in addition, the existing high-voltage box has a low protection level and cannot meet the scenarios with high protection requirements. Content of the Utility Model

[0003] Therefore, the utility model provides a high-voltage box for energy storage to solve the above problems in the prior art.

[0004] In order to achieve the above object, the utility model provides the following technical solutions:

[0005] According to the first aspect of the utility model, a high-voltage box for energy storage includes a box body, an upper cover, a control device, and multiple groups of control circuits. The control device and the control circuits are both arranged inside the box body. The multiple groups of control circuits are arranged side by side, and the upper cover is arranged on the top of the box body;

[0006] A plurality of power connectors are arranged on the outer side wall of the box body, and the power connectors are arranged in one-to-one correspondence with the control circuits;

[0007] The control circuit includes a first connecting copper bar, a second connecting copper bar, a third connecting copper bar, a contactor, and a fuse core. The first connecting copper bar, the contactor, the second connecting copper bar, the fuse core, and the third connecting copper bar are connected in sequence. A first protective cover is arranged outside the contactor, and a second protective cover is arranged outside the fuse core.

[0008] Further, the second connecting copper bar and the third connecting copper bar are both located above the first connecting copper bar, and insulators are respectively arranged between the second connecting copper bar and the first connecting copper bar and between the third connecting copper bar and the first connecting copper bar.

[0009] Further, it further includes a bottom insulating plate, the bottom insulating plate is arranged at the bottom of the inner cavity of the box body, and the control circuit is installed on the bottom insulating plate.

[0010] Further, a blower is provided inside the box body, and a ventilation protection cover is provided on the side wall of the box body.

[0011] Further, there are two ventilation protection covers, and the two ventilation protection covers are diagonally distributed. The air outlet of the blower is arranged towards one of the ventilation protection covers.

[0012] Further, ventilation mesh holes are respectively provided on the first protection cover and the second protection cover.

[0013] Further, both the first protection cover and the second protection cover are made of PC protection covers.

[0014] Further, the control device includes a power switch, a relay, and a battery management unit. The power switch and the relay are arranged at the bottom of the inner cavity of the box body, and the battery management unit is arranged on the inner side wall of the box body.

[0015] The utility model has the following advantages: Multiple control circuits are provided inside the box body, and the internal structure is compact. The components of two existing high-voltage boxes can be integrated into one high-voltage box, reducing the space occupied by the high-voltage box body. This high-voltage box can be used as two existing high-voltage boxes; A first protection cover is provided outside the contactor, and a second protection cover is provided outside the fuse core, which can form effective protection, is safer and more reliable, and is convenient for maintenance. Description of the Drawings

[0016] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0017] The structures, ratios, sizes, etc. depicted in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present utility model can be implemented. Therefore, they do not have technical substance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model.

[0018] Figure 1 It is a schematic diagram of the overall structure of a high-voltage box for energy storage provided by some embodiments of the present utility model.

[0019] Figure 2 It is a schematic diagram of the internal structure of a high-voltage box for energy storage provided by some embodiments of the present utility model.

[0020] Figure 3 Schematic diagram of the copper bus connection circuit structure of a high-voltage box for energy storage provided by some embodiments of the present utility model.

[0021] In the figure: 1, box body; 2, upper cover; 3, ventilation protective cover; 4, power connector; 5, first protective cover; 6, second protective cover; 7, fan; 8, bottom insulating plate; 9, first connecting copper bus; 10, second connecting copper bus; 11, third connecting copper bus; 12, insulator; 13, contactor; 14, fuse core. Specific embodiments

[0022] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are some, rather than all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1

[0024] As Figures 1 to 3 shown, a high-voltage box for energy storage in the first aspect embodiment of the present utility model includes a box body 1, an upper cover 2, a control device, and multiple groups of control circuits. The control device and the control circuits are both arranged inside the box body 1. The multiple groups of control circuits are arranged side by side, and each group of control circuits is connected to the control device. The upper cover 2 is arranged on the top of the box body 1. The box body 1 adopts a waterproof design. A sealing strip is provided between the box body 1 and the upper cover 2. The overall protection level of the high-voltage box can reach the IP54 standard;

[0025] A plurality of power connectors 4 are provided on the outer side wall of the box body 1, and the power connectors 4 are arranged in one-to-one correspondence with the control circuits;

[0026] The control circuit includes a first connecting copper bus 9, a second connecting copper bus 10, a third connecting copper bus 11, a contactor 13, and a fuse core 14. The first connecting copper bus 9, the contactor 13, the second connecting copper bus 10, the fuse core 14, and the third connecting copper bus 11 are connected in sequence. A first protective cover 5 is provided outside the contactor 13, and a second protective cover 6 is provided outside the fuse core 14. Both the first protective cover 5 and the second protective cover 6 adopt PC protective covers, and ventilation mesh holes are respectively provided on the first protective cover 5 and the second protective cover 6, having good heat dissipation performance and avoiding the temperature of the contactor 13 and the fuse core 14 being too high during operation.

[0027] In this embodiment, it should be noted that as Figure 3As shown, the second connecting copper bar 10 and the third connecting copper bar 11 are both located above the first connecting copper bar 9, with higher space utilization rate, which can more effectively utilize the space inside the box body 1. Moreover, insulators 12 are respectively provided between the second connecting copper bar 10 and the first connecting copper bar 9, and between the third connecting copper bar 11 and the first connecting copper bar 9. The insulators 12 adopt insulating columns, and the insulators 12 are used to form insulation and support functions.

[0028] The specifications of the first connecting copper bar 9, the second connecting copper bar 10, and the third connecting copper bar 11 are selected according to actual usage requirements. The first connecting copper bar 9, the second connecting copper bar 10, and the third connecting copper bar 11 in each group of different control circuits can be the same or different.

[0029] Furthermore, the control device includes a power switch, a relay, and a BMU (Battery Management Unit). The power switch and the relay are arranged at the bottom of the inner cavity of the box body 1, and the BMU is arranged on the inner side wall of the box body 1.

[0030] The technical effects achieved in this embodiment are as follows: Multiple groups of control circuits are provided inside the box body 1, and the internal structure is compact. The components of the existing two high-voltage boxes can be integrated into one high-voltage box, reducing the space occupied by the high-voltage box body. This high-voltage box can be used as two existing high-voltage boxes. A first protective cover 5 is provided outside the contactor 13, and a second protective cover 6 is provided outside the fuse link 14, which can form effective protection, making it safer and more reliable and facilitating maintenance.

[0031] Embodiment 2

[0032] As Figures 1 to 3 shown, another high-voltage box for energy storage provided in this embodiment has a structure including all the contents of Embodiment 1. Only the different parts will be described below.

[0033] In this embodiment, a bottom insulating board 8 is further included. The bottom insulating board 8 is arranged at the bottom of the inner cavity of the box body 1, and the control circuit is installed on the bottom insulating board 8, which can effectively guarantee the overall insulation performance.

[0034] In this embodiment, it should be noted that a blower 7 is provided inside the box body 1, and ventilation protective covers 3 are provided on the side walls of the box body 1. Air guide plates are provided on the ventilation protective covers 3. Specifically, there are two ventilation protective covers 3, and the two ventilation protective covers 3 are diagonally distributed. The air outlet of the blower 7 is arranged towards one ventilation protective cover 3, which can form a good ventilation and heat dissipation effect, and can quickly dissipate heat from the internal components of the box body 1 during use, ensuring its service life.

[0035] Although the present utility model has been described in detail with general descriptions and specific embodiments above, modifications or improvements can be made to it based on the present utility model, which will be obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present utility model all fall within the scope of protection required by the present utility model.

[0036] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of clear narration and are not used to limit the scope of implementation of the present utility model. The change or adjustment of their relative relationship, without substantial change in technical content, should also be regarded as the scope of implementation of the present utility model.

Claims

1. A high-voltage box for energy storage, characterized in that It includes a box body (1), an upper cover (2), a control device, and multiple groups of control circuits. The control device and the control circuits are both arranged inside the box body (1). The multiple groups of control circuits are arranged side by side, and the upper cover (2) is arranged on the top of the box body (1). A plurality of power connectors (4) are provided on the outer side wall of the box body (1), and the power connectors (4) are arranged in one-to-one correspondence with the control circuits. The control circuit includes a first connection copper bar (9), a second connection copper bar (10), a third connection copper bar (11), a contactor (13), and a fuse core (14). The first connection copper bar (9), the contactor (13), the second connection copper bar (10), the fuse core (14), and the third connection copper bar (11) are connected in sequence. A first protective cover (5) is provided outside the contactor (13), and a second protective cover (6) is provided outside the fuse core (14).

2. The high-voltage box for energy storage according to claim 1, characterized in that, Both the second connection copper bar (10) and the third connection copper bar (11) are located above the first connection copper bar (9), and insulators (12) are respectively provided between the second connection copper bar (10) and the first connection copper bar (9), and between the third connection copper bar (11) and the first connection copper bar (9).

3. The high-voltage box for energy storage according to claim 2, wherein It further includes a bottom insulating board (8). The bottom insulating board (8) is arranged at the bottom of the inner cavity of the box body (1), and the control circuit is installed on the bottom insulating board (8).

4. A high-voltage box for energy storage according to claim 1, characterized in that, A blower (7) is provided inside the box body (1), and a ventilation protective cover (3) is provided on the side wall of the box body (1).

5. The high-voltage box for energy storage according to claim 4, characterized in that, There are two ventilation protective covers (3), and the two ventilation protective covers (3) are diagonally distributed. The air outlet of the blower (7) is arranged towards one of the ventilation protective covers (3).

6. The high-voltage box for energy storage according to claim 1, wherein Ventilation mesh holes are respectively provided on the first protective cover (5) and the second protective cover (6).

7. A high-voltage box for energy storage according to claim 6, characterized in that, Both the first protective cover (5) and the second protective cover (6) are made of PC protective covers.

8. A high-voltage box for energy storage according to claim 1, wherein, The control device includes a power switch, a relay, and a battery management unit. The power switch and the relay are arranged at the bottom of the inner cavity of the box body (1), and the battery management unit is arranged on the inner side wall of the box body (1).

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