Heat dissipation structure of copper bar bolt connection point

Abstract

The utility model discloses a heat dissipation structure of a copper bar bolt connection point. The heat dissipation structure comprises an aluminum alloy profile heat dissipation sheet and heat dissipation fins formed on the aluminum alloy profile heat dissipation sheet. The aluminum alloy profile cooling fin is fixed to the upper surface of the copper bar through a bolt, the multiple cooling fins are evenly distributed in the circumferential direction of the aluminum alloy profile cooling fin, and the space between the multiple cooling fins is configured to be a bolt containing space. According to the heat dissipation structure, the aluminum alloy profile heat dissipation sheets are arranged at the connection points of the copper bars and the bolts, heat generated by heating of the connection point contact resistor is diffused out through the multiple heat dissipation fins on the aluminum alloy profile heat dissipation sheets, heat generated by connection of the internal resistor is released, and it is guaranteed that the device has stable and safe temperature rise.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy power batteries, in particular to a heat dissipation structure of a copper bar bolt connection point. Background Art

[0002] At present, when a large current passes through the busbar bolt connection point of a new energy power battery, the copper busbar bolt electrical connection point will have a heat dissipation problem. Due to the existence of contact resistance, heating is inevitable at the copper busbar connection point. However, if the heat is effectively reduced, it will be beneficial to the stability of the connection point. The temperature of the connection point needs to be controlled within a safe temperature rise range.

[0003] In the prior art, in addition to bolt connection, commonly used copper busbar connections include laser welding, molecular diffusion welding, ultrasonic welding and other processes. However, the equipment cost is high and disassembly is difficult, so bolt connection of copper busbars is still the mainstream method. However, the heat dissipation problem is also prominent. Bolt connection must have contact resistance, which will generate power consumption and generate a lot of heat when a large current passes through it. The only way to reduce the contact resistance on the market is to increase the torque, increase the positive pressure of the contact surface, reduce the resistance and change the coating material. At the same time, the prior art generally uses natural cooling as the main heat dissipation measure.

[0004] Therefore, based on the above technical problems, technicians in this field urgently need to develop a heat dissipation structure for the copper busbar bolt connection points. Utility Model Content

[0005] The utility model aims to provide a heat dissipation structure of a copper busbar bolt connection point, wherein a heat exchange plate made of aluminum alloy is installed at the bolt connection point to increase the heat dissipation area, release the heat generated by the connection internal resistance, and ensure a stable and safe temperature rise.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model discloses a heat dissipation structure for a copper busbar bolt connection point, which is arranged at a connection point between the copper busbar and the bolt, and comprises:

[0008] Aluminum alloy heat sink; and

[0009] Heat dissipation fins formed on the aluminum alloy profile heat sink;

[0010] The aluminum alloy profile heat sink is fixed to the upper surface of the copper bar by the bolts, the plurality of heat sinks are evenly distributed along the circumference of the aluminum alloy profile heat sink, and the space between the plurality of heat sinks is configured as a receiving space for the bolts.

[0011] Furthermore, the copper bars are divided into horizontal copper bars and overlapping copper bars;

[0012] The horizontal copper bar is connected to two insulators with nuts, and the two overlapping copper bars are respectively fixed to the positions of the corresponding insulators with nuts by bolts;

[0013] The heat dissipation structure is installed on one of the overlapping copper bars.

[0014] Furthermore, the horizontal copper bar and the overlapping copper bar are both provided with through holes, and the bolts pass through the through holes of the overlapping copper bar and the horizontal copper bar in sequence and are threadedly connected to the insulator with nuts.

[0015] Furthermore, the aluminum alloy profile heat sink is a disc structure, and a support ring is fixed on the aluminum alloy profile heat sink;

[0016] A through hole is formed at the center of the aluminum alloy profile heat sink, and the bolt passes through the through hole;

[0017] The plurality of heat dissipation fins are evenly distributed along the outer circumference of the support ring, and the plurality of heat dissipation fins are fixedly connected to the support ring.

[0018] Further, the heat dissipation fins are configured as a curved plate structure;

[0019] The heat dissipation fin extends away from one end of the support ring to the edge of the aluminum alloy profile heat dissipation fin.

[0020] In the above technical solution, the heat dissipation structure of the copper bar bolt connection point provided by the utility model has the following beneficial effects:

[0021] The heat dissipation structure of the utility model is achieved by arranging an aluminum alloy profile heat sink at the connection point of the copper busbar and the bolt, and diffuses the heat generated by the contact resistance of the connection point through multiple heat dissipation fins thereon, releases the heat generated by the internal resistance of the connection, and ensures that the device has a stable and safe temperature rise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 A schematic diagram of the structure of a heat dissipation structure of a copper bar bolt connection point disclosed in an embodiment of the present application in use;

[0024] Figure 2 This is a schematic diagram of the structure of a heat dissipation structure of a copper busbar bolt connection point disclosed in an embodiment of the present application.

[0025] Description of reference numerals:

[0026] 101. Horizontal copper bar; 102. Overlap copper bar; 103. Insulator with nut;

[0027] 2. Heat dissipation structure; 3. Bolts;

[0028] 201. Aluminum alloy profile heat sink; 202. Support ring; 203. Heat sink fin. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] See also Figure 1 to Figure 2 As shown;

[0031] This embodiment discloses a heat dissipation structure for a copper busbar bolt connection point. The heat dissipation structure 2 is arranged at the connection point between the copper busbar and the bolt 3. The heat dissipation structure 2 includes:

[0032] Aluminum alloy heat sink 201; and

[0033] The heat dissipation fins 203 are formed on the aluminum alloy heat dissipation fin 201;

[0034] The aluminum alloy profile heat sink 201 is fixed to the upper surface of the copper busbar by bolts 3 , and a plurality of heat sink fins 203 are evenly distributed along the circumference of the aluminum alloy profile heat sink 201 , and the space between the plurality of heat sink fins 203 is configured as a receiving space for the bolts 3 .

[0035] Specifically, the present embodiment discloses a heat dissipation structure 2 suitable for the copper busbar bolt connection point, which includes an aluminum alloy profile heat sink 201 assembled and fixed to the connection point by bolts 3. At the same time, a plurality of heat dissipation fins 203 are arranged on the surface of the aluminum alloy profile heat sink 201 of the present embodiment. Therefore, the heat generated by the contact resistance can be conducted away through the aluminum alloy profile heat sink 201 and the heat dissipation fins 203 to achieve the heat dissipation effect.

[0036] Preferably, the copper bars of this embodiment are divided into horizontal copper bars 101 and overlapping copper bars 102;

[0037] The horizontal copper bar 101 is connected to two insulators 103 with nuts, and the two overlapping copper bars 102 are respectively assembled and fixed to the positions of the corresponding insulators 103 with nuts by bolts 3;

[0038] A heat dissipation structure 2 is mounted on one of the overlapping copper bars 102 .

[0039] Preferably, the horizontal copper bar 101 and the overlapping copper bar 102 of this embodiment are both provided with through holes, and the bolts 3 pass through the through holes of the overlapping copper bar 102 and the horizontal copper bar 101 in sequence and are threadedly connected to the insulator 103 with nuts.

[0040] Preferably, the aluminum alloy profile heat sink 201 of this embodiment is a disc structure, and a support ring 202 is fixed on the aluminum alloy profile heat sink 201;

[0041] A through hole is formed at the center of the aluminum alloy heat sink 201, and the bolt 3 passes through the through hole;

[0042] The plurality of heat dissipation fins 203 are evenly distributed along the outer circumference of the support ring 202 , and the plurality of heat dissipation fins 203 are fixedly connected to the support ring 202 .

[0043] The heat dissipation fins 203 of this embodiment are configured as a curved plate structure;

[0044] The heat dissipation fin 203 extends away from one end of the support ring 202 to the edge of the aluminum alloy heat dissipation fin 201 .

[0045] The present embodiment further defines the composition of the heat dissipation structure 2, which includes an aluminum alloy profile heat sink 201 and a plurality of heat dissipation fins 203 fixed on the surface of the aluminum alloy profile heat sink 201 by a support ring 202, so as to achieve heat dissipation of the copper busbar bolt connection points. The present embodiment releases the heat generated by the internal resistance of the connection by increasing the heat dissipation area through the heat dissipation structure 2, thereby ensuring a stable and safe temperature rise.

[0046] In the above technical solution, the heat dissipation structure of the copper bar bolt connection point provided by the utility model has the following beneficial effects:

[0047] The heat dissipation structure 2 of the utility model is provided with an aluminum alloy profile heat sink 201 at the connection point of the copper busbar and the bolt, and the heat generated by the contact resistance of the connection point is diffused through the multiple heat dissipation fins 203 thereon, thereby releasing the heat generated by the internal resistance of the connection, and ensuring that the device has a stable and safe temperature rise.

[0048] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A heat dissipation structure of a copper bar bolt connection point, characterized in that: The heat dissipation structure (2) is arranged at the connection point of the copper busbar and the bolt (3), and the heat dissipation structure (2) comprises: Aluminum alloy profile heat sink (201); and Heat dissipation fins (203) formed on the aluminum alloy profile heat dissipation fin (201); The aluminum alloy profile heat sink (201) is fixed to the upper surface of the copper bar by means of the bolts (3); a plurality of heat sink fins (203) are evenly distributed along the circumference of the aluminum alloy profile heat sink (201); and the space between the plurality of heat sink fins (203) is configured as a receiving space for the bolts (3).

2. The heat dissipation structure of the copper bar bolt connection point according to claim 1, characterized in that: The copper bars are divided into horizontal copper bars (101) and overlapping copper bars (102); The horizontal copper bar (101) is connected to two insulators (103) with nuts, and the two overlapping copper bars (102) are respectively assembled and fixed to the positions of the corresponding insulators (103) with nuts by bolts (3); The heat dissipation structure (2) is mounted on one of the overlapping copper bars (102).

3. The heat dissipation structure of the copper bar bolt connection point according to claim 2 is characterized in that: The horizontal copper bar (101) and the overlapping copper bar (102) are both provided with through holes, and the bolts (3) pass through the through holes of the overlapping copper bar (102) and the horizontal copper bar (101) in sequence and are threadedly connected to the insulator (103) with nuts.

4. The heat dissipation structure of the copper bar bolt connection point according to claim 1, characterized in that: The aluminum alloy profile heat sink (201) is a disc structure, and a support ring (202) is fixed on the aluminum alloy profile heat sink (201); A through hole is formed at the center of the aluminum alloy profile heat sink (201), and the bolt (3) passes through the through hole; The plurality of heat dissipation fins (203) are evenly distributed along the outer circumference of the support ring (202), and the plurality of heat dissipation fins (203) are fixedly connected to the support ring (202).

5. The heat dissipation structure of the copper bar bolt connection point according to claim 4, characterized in that: The heat dissipation fins (203) are configured as a curved plate structure; The heat dissipation fin (203) extends away from one end of the support ring (202) to the edge of the aluminum alloy profile heat dissipation fin (201).

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