A Resistor for Condensing High-power Automobiles with New Lead Structure

Abstract

The invention relates to a large-power automobile condensation resistor having a novel extraction structure. The large-power automobile condensation resistor comprises a pedestal (10), a connection support (20), a resistor assembly (30), a temperature fuse (40), a pin (50) and a wiring harness (70). The large-power automobile condensation resistor also comprises a rear cover plate (60). The connection support (20) and the rear cover plate (60) are installed on the pedestal (10). The resistor assembly (30) is fixed to the connection support (20). One end of the temperature fuse (40) is connected to the connection support (20), and the other end of the temperature fuse (40) is connected to the pins (50). The connection support (20) is connected to the pin (50). The wiring harness (70) goes through the rear cover plate (60) and then is connected to the pin (50). Compared with the prior art, the large-power automobile condensation resistor has the advantages of wide application range, good stability, high safety and long service life.

Description

technical field [0001] The invention relates to a resistor, in particular to a high-power automotive condensation resistor with a new lead-out structure. Background technique [0002] Such as figure 1 As shown, the existing automotive condensing resistors are mainly composed of two parts in function, one part is several fixed resistors, and the other part is a temperature protection device. Both the resistor and the temperature protection device are connected in series to the automotive condensation fan circuit. The partial pressure effect reduces the current passing through the fan motor, thereby reducing the motor speed; the main function of the temperature protection device is to cut off the circuit in time to protect peripheral components when the car circuit is abnormal and the resistance is overheated. In the vehicle condensing fan system, through automatic switching, the system connects one or more resistance values ​​in the speed regulating resistor in series or dis...

AI Technical Summary

Problems solved by technology

For systems that require high-power single fans, the existing speed-regulating resistor technology cannot meet the requirements of high-current and long-term operation in high-temperature environments

Although the spring type speed regulating resistor of the prior art can work under high current, it is used by more and more porcelain skeleton resistors because of its high operating temperature, instability when overheated, and low reliability of protection during abnormal operation. replace

However, the existing porcelain skeleton condensation resistors are mostly used for speed regulation of small-power fans, and the existing resistors for high-power single-fan systems cannot meet the requirements of high-current and long-term operation in high-temperature environments.

The lead-out structure of the speed-regulating resistor in the prior art is the direct lead-out of the wire harness. In some installation situations where the wire harness needs to be bent, it is easy to cause the root of the wire harness to separate from the insulation layer, and the metal wire is exposed, resulting in the risk of reduced airtightness and insulation.

Images