KR-102964065-B1 - HEAT DISSIPATION BUS BAR

Abstract

The present invention discloses a heat dissipation busbar capable of reducing the temperature of a main body by receiving heat from a main body through a heat-conducting sheet and dissipating it to the outside. The disclosed heat dissipation busbar is characterized by comprising a main body, a heat conductive sheet that is attached so as to be seated on the periphery of the main body and receives heat from the main body, and a heat sink that is attached so as to be seated on the heat conductive sheet and receives heat from the heat conductive sheet and dissipates heat to the outside.

Inventors

• 정봉원

Assignees

• 주식회사 경신

Dates

Publication Date

20260513

Application Date

20240926

Claims (6)

1. Main body; A heat-conducting sheet that is adhered to the periphery of the main body so as to be seated thereon and receives heat from the main body; and A heat sink that is bonded so as to be seated on the heat conductive sheet and receives heat from the heat conductive sheet and dissipates it to the outside; The above main body has a plurality of first contact protrusions formed at regular intervals on the portion where the heat-conducting sheet is seated, and The above-mentioned heat-conducting sheet has a first receiving groove formed by recessing to accommodate the first contact protrusion in the portion where it is seated on the main body, and The heat sink comprises an adhesive plate that is adhered to the heat conductive sheet and receives heat from the heat conductive sheet, and a plurality of heat dissipation fins formed protruding from the adhesive plate at regular intervals so as to dissipate heat from the adhesive plate to the outside. The adhesive plate has a plurality of second contact protrusions formed at regular intervals on the portion that is seated on the heat conductive sheet, and The above-mentioned heat-conducting sheet has a second receiving groove formed by recessing to accommodate the second contact protrusion in the area where the adhesive plate is seated, and The above adhesive plate additionally dissipates heat received from the heat conductive sheet by means of an auxiliary heat dissipation part, and The above auxiliary heat dissipation part is characterized by including a first heat dissipation hole portion formed by penetrating a plurality of spaced-apart holes on the periphery of the adhesive plate, and a second heat dissipation hole portion formed between the heat dissipation fins in the adhesive plate and communicating with the first heat dissipation hole portion.
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5. In paragraph 1, A heat dissipation bus bar characterized in that the adhesive plate is connected to the main body so as to be fixed in position by a position-fixing connection part.
6. In paragraph 5, The above position-fixing connection part is, A first through-hole portion formed through the main body portion; An extension member extending from each side of the adhesive plate and having a second through-hole formed in the axial direction of the first through-hole portion; A fixing pin member inserted into a first through-hole portion by passing through the second through-hole portion so as to be caught on the extension member; and A catch support guide member that guides the fixing pin member to be caught and supported on the inner surface of the first through hole when the fixing pin member is inserted into the first through hole; A heat dissipation busbar characterized by including

Description

Heat Dissipation Bus Bar The present invention relates to a heat dissipation busbar, and more specifically, to a heat dissipation busbar capable of reducing the temperature of a main body by a heat sink receiving heat from a main body through a heat-conducting sheet and dissipating it to the outside. Recently, secondary batteries are being widely used not only in small devices such as portable electronic devices but also in medium-to-large devices such as electric vehicles and energy storage systems (ESS). For example, when used in electric vehicles, a battery module in which a large number of secondary batteries are electrically connected is used to increase energy capacity and output, and a battery pack is formed by connecting multiple such battery modules. Cables or busbars are used to connect these battery modules or electrical components. When current flows through a conductor with a large cross-sectional area, resistance loss is low, resulting in a smaller voltage drop across that conductor. In other words, the cross-sectional area of a conductor affects voltage drop, and this effect becomes greater with higher currents. However, busbars are mostly manufactured in the form of rods equipped with bolt holes at both ends, made of copper or aluminum, which have excellent electrical conductivity. These busbars have a larger cross-sectional area through which current can pass than sheathed cables, resulting in low impedance and high current capacity, and are easy to install even in confined spaces. For this reason, busbars are more useful than cables in battery packs where high current flows and internal space is limited. Meanwhile, the cross-sectional area of the busbar can be determined by the heat generated when the current flows and the temperature of the surrounding environment where the busbar will be used, in addition to the magnitude of the allowable current. In other words, even if the cross-sectional area of the busbar is sufficient in terms of electrical quality, it is necessary to further increase the cross-sectional area to account for the heat generated when high current flows, the internal temperature of the sealed battery pack, and the heat generated by surrounding electrical components. This is intended to reduce the heat generated by the busbar by facilitating efficient heat dissipation from the busbar's surface to the atmosphere. However, increasing the width or thickness of the busbar to expand its heat dissipation area presents a problem that is detrimental to the lightweighting and miniaturization of the battery pack, in addition to raising the material costs of the busbar. Therefore, a method is required to improve heat dissipation performance without increasing the width or thickness of the busbar beyond what is necessary. A related background technology is Korean Patent Publication No. 10-2024-0097354 (published June 27, 2024, Title: Heat Dissipation Busbar). FIG. 1 is a perspective view illustrating a heat dissipation bus bar according to one embodiment of the present invention. FIG. 2 is a cross-sectional view illustrating a heat dissipation bus bar according to one embodiment of the present invention. FIG. 3 is an exploded perspective view illustrating a heat dissipation bus bar according to another embodiment of the present invention. FIG. 4 is a cross-sectional view illustrating a heat dissipation bus bar according to another embodiment of the present invention. Hereinafter, an embodiment of a heat dissipation busbar according to the present invention will be described with reference to the attached drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. Furthermore, the terms described below are defined in consideration of their functions in the present invention, and these may vary depending on the intent or practice of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification. FIG. 1 is a perspective view illustrating a heat dissipation busbar according to one embodiment of the present invention, FIG. 2 is a cross-sectional view illustrating a heat dissipation busbar according to one embodiment of the present invention, FIG. 3 is an exploded perspective view illustrating a heat dissipation busbar according to another embodiment of the present invention, and FIG. 4 is a cross-sectional view illustrating a heat dissipation busbar according to another embodiment of the present invention. As illustrated in FIGS. 1 to 4, the heat dissipation busbar according to the present invention includes a main body (10), a heat conductive sheet (20), and a heat sink (30). The main body (10) is made of a metal material with excellent electrical conductivity and serves to provide a space in which a heat-conducting sheet (20) can be installed in a stackable manner. This main body (10) can be used to connect, for examp