Resistor, radiator and combined equipment of resistor and radiator

Abstract

The invention discloses a resistor, a radiator and combined equipment of the resistor and the radiator, and belongs to the field of power electronics. The resistor is columnar in appearance and comprises a metal end, an insulation part, a shell, a metal bar, a resistance wire, thermally conductive insulating filler and a metal connecting mechanism, wherein the metal connecting mechanism of the resistor is connected with the radiator in a direct contact manner. By virtue of adoption of the structure and the connection manner, the length of the resistor can be reduced, and complete leakage isolation of an electrical loop of the resistor and a water inlet and outlet pipe of the radiator can be realized, so that the combined equipment of the resistor and the radiator is compacter in structure and tidier in connection.

Description

technical field [0001] The invention relates to the technical field of power electronics and power systems, in particular to a resistor, a heat sink, and a combination device of a resistor and a heat sink. Background technique [0002] With the maturity of high-power power electronics technology and the development of power systems, more and more occasions need to use high-voltage high-power resistors. [0003] At present, the high-power resistors used at home and abroad dissipate a lot of power when the resistor is running, so it is necessary to design a heat dissipation method for the resistor. There are two commonly used heat dissipation methods at present. The first way is to immerse the resistance wire directly in the cooling liquid for cooling. The disadvantage is that the resistance wire is prone to chemical reactions such as ionization and rust in the case of long-term operation under the condition of passing current, which greatly affects the resistance and the cir...

AI Technical Summary

Problems solved by technology

The first way is to immerse the resistance wire directly in the cooling liquid for cooling. The disadvantage is that the resistance wire is prone to chemical reactions such as ionization and rust in the case of long-term operation under the condition of passing current, which greatly affects the resistance and the circulating cooling circuit. reliability

The second way is as attached figure 1 As shown: the number 1 in the figure indicates the radiator, and the numbers 2 and 3 respectively indicate the water inlet and outlet of the radiator. The heat of the resistor is transferred to the metal radiator through the heat conduction medium, and then the radiator performs liquid cooling. The disadvantage is that when the resistor is installed When in the radiator, the electrical lead-out line 20 on the side of the resistor interacts with the water inlet and outlet pipeline 21 of the radiator. At the same time, when the water inlet and outlet pipeline 21 has a failure such as liquid leakage, it is easy to cause electrical damage to the resistor, which greatly reduces the system. Reliability; in addition, the end of the resistor close to the water inlet and outlet pipeline 21 of the radiator will protrude from the radiator for a relatively long distance, resulting in an uncompact structure and waste of space for the combined device of the resistor and the radiator; On relatively large occasions, the electrical lead-out wires near the end of the water inlet and outlet pipes of the radiator will appear to be wired not concisely enough

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