Relay temperature rise monitoring method, device and electric vehicle

A relay and temperature rise technology, used in the field of power batteries, can solve problems such as hidden safety hazards, increased temperature rise, and damage to internal structures.

Active Publication Date: 2022-07-29
BEIJING CHJ AUTOMOTIVE TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the internal structure of the high-voltage relay will be damaged after experiencing multiple high-current shocks, so that its temperature rise will increase significantly; when the temperature rise of a high-voltage relay is too large, it will cause the contacts of the high-voltage relay to stick Therefore, during the process of high voltage on the power battery and the normal driving of the electric vehicle, the temperature rise of the high voltage relay cannot be monitored in real time situation, thus avoiding contact sticking of high voltage relays is critical

Method used

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  • Relay temperature rise monitoring method, device and electric vehicle
  • Relay temperature rise monitoring method, device and electric vehicle
  • Relay temperature rise monitoring method, device and electric vehicle

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Embodiment Construction

[0067] Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the application will be more thoroughly understood, and will fully convey the scope of the application to those skilled in the art.

[0068] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the usual meanings understood by those skilled in the art to which this application belongs.

[0069] The embodiment of the present application provides a method for monitoring the temperature rise of a relay, such as figure 1 As shown, the method includes:

[0070] 101. Detect the current of the main cir...

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Abstract

The application discloses a relay temperature rise monitoring method, device and electric vehicle, and relates to the technical field of power batteries. The method of the present application includes: detecting the main circuit current corresponding to the high-voltage main circuit; determining a preset temperature rise threshold corresponding to the main circuit current according to a preset data table, wherein the preset data table records the preset corresponding to different main circuit current Temperature rise threshold; detect the ambient temperature value and the temperature value of the target relay; determine the temperature rise value of the target relay according to the temperature value of the target relay and the ambient temperature value; according to the temperature rise value of the target relay and the preset temperature rise threshold, determine the corresponding Temperature rise monitoring results. This application is applicable to the process of monitoring the temperature rise of the high voltage relay.

Description

technical field [0001] The present application relates to the technical field of power batteries, and in particular, to a method and device for monitoring the temperature rise of a relay, and an electric vehicle. Background technique [0002] With the continuous development of society and the continuous improvement of people's living standards, people's demand for automobiles is also increasing. Due to the shortage of energy and the increasingly serious environmental pollution problems caused by traditional automobiles, electric vehicles powered by electric energy are introduced as the times require. pregnancy. [0003] After the high-voltage circuit is controlled by each high-voltage relay in the high-voltage circuit, the power battery can provide high-voltage power for the motor of the electric vehicle and other high-voltage loads in the high-voltage circuit, thereby ensuring the normal driving of the electric vehicle and the normal operation of the high-voltage load. . ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L3/00
CPCB60L3/0023
Inventor 霍姣姣
Owner BEIJING CHJ AUTOMOTIVE TECH CO LTD
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