Copper bar structure in high-voltage distribution box

Abstract

The utility model relates to a copper bar structure. A copper bar structure in a high-voltage distribution box comprises a copper bar main body, one end of the copper bar main body is a relay connecting end, the other end of the copper bar main body is a high-voltage plug-in connecting end, at least one side of the copper bar main body is provided with a heat dissipation strip, and one end of the heat dissipation strip is connected with the copper bar main body. And the other ends of the heat dissipation strips are free ends and are dispersedly positioned outside the copper bar main body. The utility model provides the copper bar structure in the high-voltage distribution box, which increases the heat dissipation area of the copper bar under the condition of not increasing the sectional area of the copper bar, is favorable for quickly guiding out heat, and is easy to process and low in cost; the technical problems that in the prior art, a copper bar is insufficient in heat dissipating capacity, large in weight and high in cost are solved.

Description

Technical Field

[0001] The utility model relates to a copper busbar structure, in particular to a copper busbar structure in a high-voltage distribution box. Background Art

[0002] Electric vehicles have been widely developed and utilized due to their advantages such as high energy utilization, energy saving and environmental protection. At present, the popularity of new energy vehicles in the vehicle market is constantly increasing. When the power battery of new energy vehicles outputs power, it will generate noise that interferes with the work of other components. The function of the capacitor box is to filter the power source and suppress the propagation of noise to the outside, avoid interfering with the switching characteristics of internal electronic devices and inverters, and protect driving safety.

[0003] With the rapid development of electric vehicles, the battery charging power and the drive motor power are getting bigger and bigger, resulting in the current of the charging and discharging circuit in the high-voltage distribution box becoming larger and larger. The copper busbar is the conductor of the current in the high-voltage distribution box. The larger the current, the greater the heat it generates. Severe heating of the copper busbar may cause damage to the components connected to it, and there is also the risk of burning the high-voltage distribution box. Therefore, how to dissipate the heat on the charging and discharging copper busbar is an important research topic.

[0004] A common method is to increase the cross-sectional area of ​​the copper bar in the charging and discharging circuit in the high-voltage distribution box. The cross-sectional area of ​​the copper bar is generally rectangular, such as the Chinese patent: "A copper bar heat dissipation structure and automobile fast charging circuit structure (CN209938356U)", in which the heat dissipation structure includes a thermal insulation pad and a heat sink, which are sequentially arranged on one or both sides of the copper bar. However, increasing the thickness of this structure will make bending difficult and the processing cost high; increasing the width will increase the occupied space, which is not convenient for the copper bar layout. At the same time, increasing the cross-sectional area will also increase the weight of the copper bar, which is not conducive to the lightweight of the vehicle and will increase the material cost. Summary of the invention

[0005] The utility model provides a copper busbar structure in a high-voltage distribution box which increases the heat dissipation area of ​​the copper busbar without increasing the cross-sectional area of ​​the copper busbar, is conducive to rapid heat dissipation, is easy to process and has low cost; and solves the technical problems of insufficient heat dissipation of the copper busbar, heavy weight of the copper busbar and high cost in the prior art.

[0006] The above technical problem of the utility model is solved by the following technical solution: a copper bar structure in a high-voltage distribution box, including a copper bar body, one end of the copper bar body is a relay connection end, the other end of the copper bar body is a high-voltage plug-in connection end, at least one side of the copper bar body is provided with a heat dissipation strip, one end of the heat dissipation strip is connected to the copper bar body, and the other end of the heat dissipation strip is a free end dispersedly located outside the copper bar body. The end of the heat dissipation strip is separated from the copper bar body, and the end of the heat dissipation strip extends outward, and hot air radiates outward along with the heat dissipation strip, which increases the heat dissipation area without increasing the area of ​​the copper bar body. Thereby, the service life of the high-voltage distribution box is also improved.

[0007] Preferably, the heat dissipation strips are arranged in two rows, which are respectively located on both sides of the copper bar body. The two rows of heat dissipation strips improve the heat dissipation efficiency.

[0008] Preferably, the heat dissipation strips are integrally formed with the copper bar body, and each heat dissipation strip is obtained by cutting and folding the side of the copper bar body. The heat dissipation strips are directly cut from the side of the copper bar body and bent, which has a simple process and low cost.

[0009] Preferably, the heat dissipation strip is perpendicular to the copper bar body, and the width of the heat dissipation strip is 1-2 mm. Hot air flows upward, and the right angle will not block the air flow, making the convection heat dissipation efficiency higher.

[0010] Preferably, the relay connection end is L-shaped, and the height of the heat dissipation strip is not greater than that of the relay connection end, which facilitates the arrangement of the heat dissipation strip and provides space for the heat dissipation strip, does not require changes to other structures in the distribution box, has low cost and simple structure.

[0011] Preferably, the connection end of the high-voltage connector and the copper busbar body are located in the same plane.

[0012] Therefore, the copper busbar structure in a high-voltage distribution box of the utility model has the following advantages: an integrally formed structure, no need for welding and other processes, simple manufacturing process, and high production efficiency; heat dissipation strips are cut and folded on both sides of the copper busbar body, which increases the heat dissipation surface area without increasing the cross-sectional area of ​​the copper busbar, so that the heat on the copper busbar can be quickly dissipated, while the material cost is not increased, and it is easy to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the copper busbar structure inside a high-voltage distribution box.

[0014] Figure 2 yes Figure 1 Installation and use diagram. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0016] Example:

[0017] like Figure 1 and 2 As shown, a copper busbar structure in a high-voltage distribution box includes a rectangular copper busbar body 1, one end of the copper busbar body 1 is an integrally formed L-shaped relay connection terminal 3, and the other end of the copper busbar body is an integrally formed high-voltage plug-in connector connection terminal 4, and the high-voltage plug-in connector connection terminal 4 and the copper busbar body 1 are located in the same plane.

[0018] Heat dissipation bars 2 are evenly arranged on both sides of the copper busbar body 1. The heat dissipation bars 2 are perpendicular to the copper busbar body 1, and the width of the heat dissipation bars 2 is about 1-2 mm. The heat dissipation bars 2 are obtained by cutting and folding the two sides of the copper busbar body, and the structure and process are very simple. The length of the heat dissipation bar 2 is not greater than the height of the relay connection end, which allows the heat dissipation bar 2 to have sufficient heat dissipation space and improves the heat dissipation efficiency.

[0019] When in use, after the copper busbar 5 is installed in the high-voltage distribution box, one end of the copper busbar 5 is connected through the relay connection end, and the other end of the copper busbar is connected through the high-voltage connector connection end. The heat dissipation strips are located on both sides of the copper busbar body, which can achieve sufficient heat dissipation, thereby improving the service life of the high-voltage distribution box.

[0020] The specific embodiments described herein are merely examples of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A copper busbar structure in a high-voltage distribution box, comprising a copper busbar body, characterized in that: One end of the copper busbar body is a relay connection end, and the other end of the copper busbar body is a high-voltage plug-in connection end. At least one side of the copper busbar body is provided with a heat dissipation strip, one end of the heat dissipation strip is connected to the copper busbar body, and the other end of the heat dissipation strip is a free end dispersedly located outside the copper busbar body.

2. The copper busbar structure in a high-voltage distribution box according to claim 1 is characterized in that: The heat dissipation strips are arranged in two rows, and are respectively located on two sides of the copper bar body.

3. The copper busbar structure in a high-voltage distribution box according to claim 1 or 2, characterized in that: The heat dissipation strips are integrally formed with the copper bar body, and each heat dissipation strip is obtained by cutting and folding the side of the copper bar body.

4. The copper busbar structure in a high-voltage distribution box according to claim 1 or 2, characterized in that: The heat dissipation strip is perpendicular to the copper bar body, and the width of the heat dissipation strip is 1-2 mm.

5. The copper busbar structure in a high-voltage distribution box according to claim 1 or 2, characterized in that: The relay connection end is L-shaped, and the height of the heat dissipation strip is not greater than the height of the relay connection end.

6. The copper busbar structure in a high-voltage distribution box according to claim 1 or 2, characterized in that: The connection end of the high-voltage connector and the copper busbar body are located in the same plane.

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