Unlock instant, AI-driven research and patent intelligence for your innovation.

Relay for starter

A relay and starter technology, used in relays, motor starting for engines, electromagnetic relays, etc., can solve problems such as damage to ECU, electromagnetic compatibility defects of relays, and failure of starter functions, and achieve the effect of preventing damage.

Inactive Publication Date: 2017-07-21
SHANGHAI VALEO AUTOMOTIVE ELECTRICAL SYST
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most commercial vehicle starters integrate starter relays, some of which are controlled by the electronic control unit ECU (Electronic Control Unit). The number of turns of the starter relay winding is usually about 1000 turns, the rated voltage is 24V, and the operating current ≤2A, when the relay is powered off, the 200V-500V induction voltage generated by the winding will impact the control circuit connecting the ECU to the starter, and in severe cases, it will damage the ECU function, and at the same time cause the EMC (ElectroMagnetic Compatibility) function defect of the relay
After the relay adds freewheeling diodes at both ends of the winding, in the relay test stage, starter test stage, engine inspection and test stage, occasionally the polarity of the power supply is reversed, which will cause internal short circuit damage to the freewheeling diode on the winding, and finally lead to The entire starter motor fails

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Relay for starter
  • Relay for starter
  • Relay for starter

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0023] figure 2 It is a structural schematic diagram of the first embodiment of the starter relay provided by the present invention. Such as figure 2 As shown, the relay provided by the present invention is used for a starter, and its two ends are respectively connected with the battery 12 and the electromagnetic switch 14, controlled by the ECU 11, and the two ends of the relay winding are respectively connected with the positive pole and the negative pole of the ECU control terminal. When the ECU11 controls the relay 13 to be energized, the current flows through the built-in winding of the relay 13 and generates an electromagnetic field. Pass. A current passes through the winding of the electromagnetic switch 14, and the current generates an electromagnetic force to close the electromagnetic switch 14, so that the battery 12 and the starter 15 maintain a path, and further complete the starting of the automobile engine. The relay includes a winding 131, a freewheeling di...

no. 2 example

[0028] attached image 3 It is a structural schematic diagram of the second embodiment of the starter relay provided by the present invention. Compared with the first embodiment, the unidirectional conduction diode 132 is connected in series after the parallel circuit composed of the relay winding 131 and the freewheeling diode 135, and the single The anode of the conduction diode 132 is connected to the relay winding, and the cathode is connected to the output terminal of the relay 13 .

[0029] Compared with the prior art, the starter relay provided by the present invention has the following advantages: first, by connecting a freewheeling diode in parallel between the input end and the output end of the relay winding, the precision electronics inside the ECU connected to the relay can be protected. components to protect it from the high-voltage impact generated by the winding when the relay is powered off, so that the characteristics of the relay can meet the EMC requirement...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a relay for a starter, and belongs to the technical field of relays. The relay for the starter is used for solving the technical problem of damage of an ECU connected with a winding caused by high-voltage impact of the winding generated in power failure of a relay in the prior art. The relay for the starter comprises a winding, a contact and an iron core; and when the winding is electrified, the iron core is suffered from the effect of electromagnetic force of an electromagnetic field to close the contact. The relay for the starter further comprises a flywheel diode and a one-way diode, wherein the flywheel diode is connected between the input end and the output end of the winding in parallel; and the one-way diode is serially connected with the winding. The relay for the starter not only can solve the technical problem of damage of the ECU connected with the winding caused by high-voltage impact of the winding generated in power failure of the relay in the prior art, but also can further actively prevent damage of the relay caused by inversed polarity grafting of a power supply, and has the advantages of stable performance, safety and reliability.

Description

technical field [0001] The invention relates to the technical field of relays, in particular to a starter relay. Background technique [0002] The starter of an automobile engine, also known as a starter motor or a starter, works on the principle of converting the electrical energy of the battery into mechanical energy through a transmission mechanism to drive the engine to run. In the prior art, a starter relay is usually used in series with the starter electromagnetic switch to prevent the large current from directly passing through the ignition switch by using a small current to control the large current, which will cause the ignition switch to burn out and protect the circuit and switch. . [0003] Such as figure 1 As shown, when the starter switch 2 is closed, the current flows through the built-in electromagnetic coil of the relay 3 and generates an electromagnetic field. A current passes through the electromagnetic coil winding 4, and the current generates an elect...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F02N11/08H01H50/02H01H50/44
CPCF02N11/087H01H50/021H01H50/44
Inventor 边建华黄远长涂明张炳兴王苹范永周
Owner SHANGHAI VALEO AUTOMOTIVE ELECTRICAL SYST