Copper bar, high-voltage box and energy storage system

Abstract

The utility model relates to the technical field of energy storage, and discloses a copper bar, a high-voltage box and an energy storage system. The extension part is additionally arranged in the copper bar, so that the heat dissipation capability of the copper bar can be improved. Specifically, the first end part of the extension part is fixed with the first electric connection part, so that the extension part is connected and fixed with the first electric connection part, and the second end part of the extension part extends towards the direction far away from the first electric connection part, so that the heat dissipation area of the copper bar is increased, and the heat dissipation capability of the copper bar is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, and in particular to a copper bus, a high-voltage box and an energy storage system. Background Art

[0002] Due to the instability of renewable energy sources, such as solar energy and wind energy, the power generation fluctuates greatly under different weather conditions, so energy storage technology is needed to solve this problem. An energy storage system is a device or system that stores energy and releases it when needed.

[0003] The high-voltage box plays an important role as a switch in the energy storage system. It is equivalent to an adapter, which transfers the energy stored in the battery to other devices for power supply. The copper busbar is a key component for connecting and conducting the entire high-voltage box system. Due to the particularity of its working state, the contact area will generate heat when connected to other components. However, the existing copper busbar has a limited heat dissipation area, resulting in poor heat dissipation of the copper busbar. Utility Model Content

[0004] In view of this, the utility model provides a copper busbar, a high-voltage box and an energy storage system to solve the problem of poor heat dissipation of the existing copper busbar.

[0005] In the first aspect, the utility model provides a copper busbar, which includes a body and an extension part. The body is provided with a first electrical connection part, and the body electrically connects two adjacent electrical components through the first electrical connection part; the extension part is provided with at least one, and the first end of any of the extension parts is fixed to the first electrical connection part, and the second end of any of the extension parts extends in a direction away from the first electrical connection part.

[0006] Beneficial effect: By fixing the first end of any extension part to the first electrical connection part, the connection and fixation of the extension part and the first electrical connection part are achieved, and the second end of any extension part is extended in a direction away from the first electrical connection part, so as to increase the heat dissipation area of ​​the copper busbar. After the copper busbar is electrically connected to the electrical component, the heat dissipation area is increased, thereby improving the heat dissipation capacity of the copper busbar.

[0007] In an optional embodiment, the first electrical connection portion includes a top wall, a bottom wall and at least one side wall; the first end is connected to any one of the top wall, the bottom wall and the side wall; in the horizontal direction and / or the height direction, the first electrical connection portion, the first end and the second end are arranged in parallel or staggered.

[0008] In an optional embodiment, a side of the second end away from the first end is folded toward a direction close to the first electrical connection portion, so that the extension portion presents a bent structure.

[0009] In an optional embodiment, the extension portion includes a plurality of heat sinks, and the plurality of heat sinks are arranged side by side.

[0010] In an optional embodiment, at least two first electrical connection parts are provided, any one of the first electrical connection parts is connected to an adjacent first electrical connection part or is connected through a transition section, and in the horizontal direction and / or the height direction, the two first electrical connection parts are arranged in parallel or staggered.

[0011] In an optional embodiment, at least two of the first electrical connection parts are integrally formed or detachably connected.

[0012] In an optional embodiment, the first electrical connection portion is provided with a contact surface for electrically connecting to an electrical component, and the contact area of ​​the contact surface is S1; the heat dissipation area of ​​the copper busbar is S2; wherein Z=S1 / S2, 0≤Z≤0.7.

[0013] In an optional embodiment, the first electrical connection portion is provided with a mounting hole penetrating through the upper and lower end surfaces thereof, and the mounting hole is used to be connected and fixed to the second electrical connection portion of the electrical component through a connecting structure.

[0014] In a second aspect, the utility model further provides a high-voltage box, comprising a shell, an electrical component disposed in the shell, and a copper busbar as described above for electrically connecting two adjacent electrical components.

[0015] Beneficial effect: Since the high-voltage box includes a copper busbar, it has the same effect as the copper busbar and will not be described in detail here.

[0016] In a third aspect, the utility model also provides an energy storage system, comprising the above-mentioned high-voltage box.

[0017] Beneficial effect: Because the energy storage system includes a high-voltage box, it has the same effect as the high-voltage box and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the specific implementation modes of the present invention, the drawings required for use in the description of the specific implementation modes will be briefly introduced below. Obviously, the drawings described below are some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 The copper busbar provided in the embodiment of the utility model is a top view of the first implementation mode;

[0020] Figure 2The copper busbar provided in the embodiment of the utility model is a side view of the first embodiment;

[0021] Figure 3 The copper busbar provided in the embodiment of the utility model is a top view of the second implementation mode;

[0022] Figure 4 The copper busbar provided in the embodiment of the utility model is an axial side view of the third embodiment;

[0023] Figure 5 The copper busbar provided in the embodiment of the utility model is a top view of a fourth implementation mode;

[0024] Figure 6 The copper busbar provided in the embodiment of the utility model is a side view of a fourth implementation mode;

[0025] Figure 7 The copper busbar provided in the embodiment of the utility model is a schematic diagram of the structure of the first implementation mode after being installed with the electrical components;

[0026] Figure 8 The copper busbar provided in the embodiment of the utility model is a schematic diagram of the structure of the second implementation mode after being installed with the electrical components;

[0027] Fig. 9 The copper busbar provided in the embodiment of the utility model is a schematic diagram of the structure of the third implementation mode after being installed with the electrical components;

[0028] Fig.10 The copper busbar provided in the embodiment of the utility model is a schematic diagram of the structure of the fourth implementation mode after being installed with the electrical components;

[0029] Description of reference numerals:

[0030] 1. copper busbar; 11. body; 111. first electrical connection portion; 112. transition section; 113. mounting hole; 12. extension portion; 121. first end portion; 122. second end portion; 123. heat sink;

[0031] 2. Electrical component; 211. Second electrical connection portion. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0033] In the description of the present application, it should be understood that the terms "upper", "lower", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] See also Figures 1 to 10 , Figure 1 A top view of a first implementation mode of the copper busbar provided in an embodiment of the present application is shown; Figure 2 A side view of a first implementation mode of a copper busbar provided in an embodiment of the present application is shown; Figure 3 The copper bus provided in the embodiment provided in this application is a top view of the second implementation mode;

[0037] Figure 4 The copper busbar provided in the embodiment provided in this application is an axial side view of a third embodiment; Figure 5 The copper bus provided in the embodiment provided in this application is a top view of a fourth implementation mode; Figure 6 The copper busbar provided in the embodiment provided in this application is a side view of a fourth implementation mode; Figure 7 The copper busbar provided in the embodiment provided in this application is a schematic diagram of the structure of the first implementation mode after being installed with the electrical components;

[0038] Figure 8 The copper busbar provided in the embodiment provided in this application is a schematic diagram of the structure of the second implementation mode after being installed with the electrical components; Fig. 9 The copper busbar provided in the embodiment provided in this application is a schematic diagram of the structure of the third implementation mode after being installed with the electrical components; Fig.10 Figure 4 shows a schematic structural view of the copper bar provided in the embodiment of the present application after being installed with electrical components, which is the fourth embodiment.

[0039] Next, in conjunction with Figures 1 to 10 , embodiments of the present utility model will be described.

[0040] In a first aspect, the present utility model provides a copper bar 1, which includes a body 11 and at least one extension portion 12. Among them, the body 11 is provided with a first electrical connection portion 111, and the body 11 electrically connects two adjacent electrical components 2 through two first electrical connection portions 111. For example, the electrical component 2 is a power supply, a relay, etc. The first end 121 of any extension portion 12 is fixed to the first electrical connection portion 111, and the second end 122 of any extension portion 12 extends in a direction away from the first electrical connection portion 111.

[0041] By using the technical solution of this embodiment, by fixing the first end 121 of any extension portion 12 to the first electrical connection portion 111, the connection and fixation between the extension portion 12 and the first electrical connection portion 111 are realized, and the second end 122 of any extension portion 12 extends in a direction away from the first electrical connection portion 111, which is convenient for increasing the heat dissipation area of the copper bar 1. After the copper bar 1 is electrically connected to the electrical component 2, since the heat dissipation area is increased, the heat dissipation capacity of the copper bar 1 is further improved.

[0042] It should be noted that for the copper bar 1 provided in the present application, the arrangement form of the extension portion 12 relative to the first electrical connection portion 111 is not specifically limited.

[0043] In the present application, the first electrical connection portion 111 includes a top wall surface, a bottom wall surface and at least one side wall surface. During installation, the first end 121 can be connected to any one of the top wall surface, the bottom wall surface and the side wall surface, and in the horizontal direction and / or the height direction, the first electrical connection portion 111, the first end 121 and the second end 122 are arranged in parallel or offset.

[0044] For example, let the side of the second end 122 away from the first end 121 be folded towards the direction close to the first electrical connection portion 111, so that the extension portion 12 presents a bent structure. The number of folding times can be one, two or more, so that the bent structure has one or more sections of bending. Preferably, as Figure 1 and Figure 2 shown, in the embodiment of the present application, the first end 121 is connected to one of the side wall surfaces of the first electrical connection portion 111, and the side of the second end 122 away from the first end 121 is folded upward and then folded towards the direction close to the first electrical connection portion 111, so that the extension portion 12 presents a "C" shape, and its opening faces the top wall surface of the first electrical connection portion 111.

[0045] For another example, the top wall surface of the extension part 12 is coplanar with the top wall surface of the first electrical connection part 111, and the bottom wall surface of the extension part 12 is coplanar with the bottom wall surface of the first electrical connection part 111, so that the extension part 12 and the first electrical connection part 111 present a flat plate shape after connection. Preferably, as Figure 3 shown, in the embodiment of the present application, one side wall surface of the first end part 121 is connected to the first electrical connection part 111, and the side of the second end part 122 away from the first end part 121 extends in a direction away from the first electrical connection part 111, so that the extension part 12 and the first electrical connection part 111 present an "L" shape. In addition, when there are two extension parts 12 and the two extension parts 12 are symmetrically arranged on two opposite side wall surfaces of the first electrical connection part 111, the two extension parts 12 and the first electrical connection part 111 present a "T" shape.

[0046] For another example, the extension part 12 can also be arranged obliquely relative to the first electrical connection part 111, so that the extension part 12 and the first electrical connection part 111 are arranged in a cross shape, and the included angle at the connection between the extension part 12 and the first electrical connection part 111 is an acute angle, a right angle or an obtuse angle.

[0047] Of course, the extension part 12 and the first electrical connection part 111 can also be connected through a transition section. For example, the top wall surface of the extension part 12 and the top wall surface of the first electrical connection part 111 are misaligned and parallel in the height direction, and the bottom wall surface of the extension part 12 and the bottom wall surface of the first electrical connection part 111 are misaligned and parallel in the height direction, so that the extension part 12, the first electrical connection part 111 and the transition section present a "Z" or "匚" shaped structure, and the connection between the extension part 12 and the transition section and the connection between the first electrical connection part 111 and the transition section are arranged in a cross shape, so that the included angle between the connections is an acute angle, a right angle or an obtuse angle.

[0048] To further improve the heat dissipation capacity of the copper row 1, the extension part 12 further includes heat dissipation fins 123.

[0049] It can be explained that in the present application, the specific number of the heat dissipation fins 123 is not specifically limited, and it is only necessary to increase the heat dissipation area.

[0050] For example, the extension part 12 includes a plurality of heat dissipation fins 123, and the plurality of heat dissipation fins 123 are arranged side by side.

[0051] Preferably, as Figure 4 shown, the plurality of heat dissipation fins 123 are evenly distributed and vertically installed on the surface between the first end part 121 and the second end part 122, and there is a gap between adjacent heat dissipation fins 123 to facilitate heat exchange during air flow. At this time, the first end part 121, the second end part 122 and the heat dissipation fins 123 as a whole are used as the extension part.

[0052] Of course, the heat sink 123 can also be stacked on the top wall, bottom wall or side wall of the first electrical connection portion 111, so that the stacked heat sink 123 serves as an extension. Figure 5 and Figure 6 As shown, the heat sink 123 is stacked and arranged on the top wall of the first electrical connection portion 111. Further, during processing, only the heat sink 123 arranged on the top wall away from the first electrical connection portion 111 is processed according to the required accuracy, so that the heat sink 123 meets the flatness requirement when assembled with the electrical component 2, while the heat sink 123 arranged on the top wall close to the first electrical connection portion 111 is not assembled with the electrical component, so the processing accuracy of this part of the heat sink 123 can be appropriately lowered during processing. In this way, compared with processing the copper bar 1 as a whole according to a uniform accuracy, the copper bar 1 of this embodiment has a smaller processing amount, so that the cost is lower, that is, the heat dissipation area is increased on the basis of the unchanged contact area, the heat dissipation capacity of the copper bar 1 is improved, and the manufacturing cost of the copper bar 1 is reduced.

[0053] During installation, if Fig.10 As shown, the heat sink 123 is placed between the first electrical connection portion 111 and the second electrical connection portion 211. In the direction from the first electrical connection portion 111 to the second electrical connection portion 211, the size of the heat sink 123 is reduced, the heat sink 123 with a larger area is arranged close to the first electrical connection portion 111, and the heat sink 123 with a smaller area is arranged close to the second electrical connection portion 211, so as to present a boss structure. It should be noted that the total thickness of the heat sinks 123 after stacking needs to be less than the base material thickness of the copper busbar 1 to avoid interference with the assembly process of other electrical components.

[0054] It can be explained that the above-mentioned configuration forms of the extension part 12 can be used in combination or alone, without any specific limitation. Figures 1 to 6 Only some of the configurations are shown. When using the configurations, you can select the configurations based on the internal dimensions of the high-voltage box.

[0055] It can be explained that the copper busbar 1 provided in the present application also does not specifically limit the number of the extension parts 12. It can be one, two, three or more. For example, one extension part 12 is used to be installed on the top wall, bottom wall or side wall of the first electrical connection part 111; of course, two or more extension parts 12 can also be used to be installed at one or more of the top wall, bottom wall or side wall of the first electrical connection part 111.

[0056] It can be explained that the copper busbar 1 provided in the present application does not specifically limit the number of the first electrical connection parts 111. It can be one, two or more, for electrically connecting multiple electrical components 2. Preferably, there are two or more first electrical connection parts 111.

[0057] Further, among two adjacent first electrical connection parts 111, the two first electrical connection parts 111 can be directly connected or connected through a transition section 112. In the horizontal direction and / or the height direction, the two first electrical connection parts 111 are arranged in parallel or offset. For example, as Figures 1 to 4 shown, after the two first electrical connection parts 111 are connected through the transition section 112, they present a multi-segment bent form, such as a "Z" - shaped bend, a "U" - shaped bend, a "匚" - shaped bend, etc.; or as Figure 5 and Figure 6 shown, after the two first electrical connection parts 111 are directly connected, they present a flat - plate form.

[0058] Similarly, for the copper row 1 provided in this application, the connection method between multiple first electrical connection parts 111 is not specifically limited. It can be in an integrally formed manner or in a split - type design manner. Of course, when installing, a welding method can be selected for fixation.

[0059] It can be explained that in this application, the first electrical connection part 111 is provided with a contact surface for electrically connecting with the electrical component 2. Define the contact area for electrically connecting with the electrical component 2 in the contact surface as S1; and define the surface of the first electrical connection part 111 of the copper row 1 as the heat - dissipation surface, and the heat - dissipation area of the first electrical connection part 111 as S2; where, define Z = S1 / S2. Preferably, in the embodiments of this application, 0 ≤ Z ≤ 0.7, and at this time, the copper row 1 has good heat - dissipation performance. Specifically, the heat - dissipation area S2 of the copper row 1 is the area for contacting the air in the first electrical connection part 111.

[0060] It can be explained that in this application, as Figure 1 、 Figure 3 、 Figure 4 、 Figures 5 to 9 shown, the first electrical connection part 111 is provided with mounting holes 113 penetrating through its upper and lower end surfaces. The mounting holes 113 are used to be connected and fixed to the second electrical connection part 211 of the electrical component 2 through a connection structure. Further, the second electrical connection part 211 is provided with an elongated connection hole, preferably a U - shaped hole.

[0061] Specifically, the connection structure is not specifically limited. Preferably, the connection structure includes a bolt and a nut. When connecting the electrical connection end of the copper row 1 and the electrical component 2, after using the bolt to pass through the mounting hole 113 and the U - shaped hole, use the nut to tighten until the nut is thread - connected to the bolt until it is fastened.

[0062] In a second aspect, the present utility model also provides a high - voltage box, as Figures 7 to 10 shown, including the copper row 1 mentioned in the first aspect above and each electrical component 2.

[0063] The high-voltage box of the present application also includes a shell, and the interior of the shell is enclosed to form an installation chamber. The installation chamber is used to place various electrical components 2 and a copper bus 1 for electrically connecting the electrical components 2. The electrical components 2 include power supplies, relays, fuses, transformers, etc. During installation, copper bus 1 with different structures is flexibly used so that each electrical component 2 has the advantages of small size and high integration after installation.

[0064] In a third aspect, the utility model further provides an energy storage system, comprising the high-voltage box mentioned in the second aspect.

[0065] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A copper busbar, characterized in that: include: A body (11), wherein the body (11) is provided with a first electrical connection portion (111), and the body (11) electrically connects two adjacent electrical components (2) via two of the first electrical connection portions (111); An extension part (12), wherein the extension part (12) is provided with at least one, a first end (121) of any extension part (12) is fixed to a first electrical connection part (111), and a second end (122) of any extension part (12) extends in a direction away from the first electrical connection part (111).

2. The copper busbar according to claim 1, characterized in that: The first electrical connection portion (111) comprises a top wall, a bottom wall and at least one side wall; The first end portion (121) is connected to any one of the top wall, the bottom wall and the side wall; In the horizontal direction and / or the height direction, the first electrical connection portion (111), the first end portion (121) and the second end portion (122) are arranged in parallel or staggered.

3. The copper busbar according to claim 2, characterized in that: A side of the second end portion (122) away from the first end portion (121) is folded in a direction close to the first electrical connection portion (111), so that the extension portion (12) presents a bent structure.

4. The copper busbar according to claim 1, characterized in that: The extension portion (12) comprises a plurality of heat sinks (123), and the plurality of heat sinks (123) are arranged side by side.

5. The copper busbar according to claim 1, characterized in that: At least two first electrical connection parts (111) are provided, and any one of the first electrical connection parts (111) is connected to an adjacent first electrical connection part (111) or is connected via a transition section (112). In the horizontal direction and / or the height direction, the two first electrical connection parts (111) are arranged in parallel or staggered.

6. The copper busbar according to claim 5, characterized in that: At least two of the first electrical connection parts (111) are integrally formed or separately connected and fixed.

7. The copper busbar according to any one of claims 1 to 6, characterized in that: The first electrical connection portion (111) is provided with a contact surface electrically connected to the electrical element (2), and a contact area S1 of the contact surface for contacting the electrical element (2); The heat dissipation area of ​​the first electrical connection portion (111) is S2; Among them, Z=S1 / S2, 0≤Z≤0.

7.

8. The copper busbar according to any one of claims 1 to 6, characterized in that: The first electrical connection portion (111) is provided with a mounting hole (113) penetrating the upper and lower end surfaces thereof, and the mounting hole (113) is used to be connected and fixed to the second electrical connection portion (211) of the electrical element (2) through a connection structure.

9. A high voltage box, characterized in that: The invention comprises a housing, an electrical component (2) arranged in the housing, and a copper busbar (1) as claimed in any one of claims 1 to 8 for electrically connecting two adjacent electrical components.

10. An energy storage system, characterized in that: Including the high voltage box as claimed in claim 9.

Images