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Vehicle solid-state relay

A solid-state relay, vehicle technology, applied in relay ventilation/cooling/heating and other directions, can solve the problems of low reliability, poor heat dissipation, poor sealing performance, etc., to improve heat dissipation, long service life, and improved sealing performance Effect

Inactive Publication Date: 2013-10-23
SHANGHAI HUGONG AUTO ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: the existing automotive solid-state relay has poor heat dissipation capability, which easily leads to overheating of the relay, resulting in low reliability; in addition, internal pins and other components are completely mechanically fixed, and the firmness of the fixation is relatively low. Low, and the sealing performance is poor, resulting in low reliability

Method used

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  • Vehicle solid-state relay
  • Vehicle solid-state relay
  • Vehicle solid-state relay

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with specific examples.

[0032] see image 3 , 4 , a solid-state relay for vehicles. Its pin arrangement and size conform to the ISO Mini relay standard. At present, German, American, and some self-owned brand models use this pin specification relay.

[0033] Its peripheral wiring diagram is as follows figure 1 shown, where:

[0034] Terminal 30: connected to the battery power supply;

[0035] Terminal 86: connected to the low-side switch, used to control the on-off of the solid-state relay;

[0036] Terminal 87: connected to the load, if it is a high-power inductive load (fan, motor, electromagnetic coil, etc.), the reverse electromotive force suppression diode should be connected in parallel at both ends of the load.

[0037] Terminal 86: Empty pin.

[0038] The internal circuit of the solid state relay is as figure 2 As shown, when the 86-pin is grounded through the switch, the current of t...

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Abstract

The invention relates to a solid-state relay, and in particular to a vehicle solid-state relay which belongs to the technical field of solid-state relays. The vehicle solid-state relay is characterized by comprising a rectangular metal base plate (1), wherein the metal base plate (1) comprises an upper circuit layer, an intermediate insulating layer and a lower metal base plate, and the circuit layer is welded and fixed with pins (2); the vehicle solid-state relay further comprises a heat dissipation shell (3), wherein a rectangular groove is formed on the heat dissipation shell, heat conduction silicone grease is coated in the groove, and the metal base plate (1) is arranged in the groove and in fit fixation with the groove; the heat conduction silicone grease is poured into the groove and the upper part of the metal base plate (1), so that the metal base plate (1) and the heat dissipation shell (3) are in sealed fixation with each other; and heat dissipation plates are fixedly arranged on the heat dissipation shell (3) in a grid manner.

Description

technical field [0001] The invention relates to a solid-state relay, in particular to a solid-state relay for vehicles, and belongs to the technical field of solid-state relays. Background technique [0002] The automotive relay completes the function of small signal control and switching of high-power electrical appliances, and is an important part of the automotive electronic circuit. The traditional automotive electromagnetic relay has experienced decades of development, and its optimal design in terms of service life and light weight has encountered bottlenecks. In recent years, with the development of the microelectronics industry, automotive solid-state relays using smart MOSFETs (metal-oxide-semiconductor-field-effect transistors) have gradually been used in some mid-to-high-end models of many European and American automakers. Features such as reliability, energy saving and emission reduction, and reduced vehicle weight bring drivers a safer and more comfortable driv...

Claims

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Application Information

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IPC IPC(8): H01H45/12
Inventor 秦嘉诚席杰明屠佳乐
Owner SHANGHAI HUGONG AUTO ELECTRIC
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