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Direct-current charging safety monitoring device for electric automobile

A technology of DC charging and safety monitoring, applied in electric vehicles, measuring devices, measuring electricity, etc., can solve the problems of high cost and high complexity of data processing, and achieve the effect of low circuit cost and reduced difficulty

Inactive Publication Date: 2015-04-29
ANHUI GVB RENEWABLE ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the method of charging handshake through A / D detection has high cost and high complexity of data processing

Method used

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  • Direct-current charging safety monitoring device for electric automobile
  • Direct-current charging safety monitoring device for electric automobile
  • Direct-current charging safety monitoring device for electric automobile

Examples

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Embodiment Construction

[0025] This embodiment is based on national standards: GBT 20234.2 and GBT 20234.3.

[0026] An electric vehicle DC charging safety monitoring device is composed of a signal detection circuit and a vehicle controller.

[0027] figure 1 It is a signal detection circuit, in which the cathode of the opto-isolator I1 is connected to the power supply +12V through the resistor R1, the anode of the opto-isolator I1 is the CC1 port and is grounded through R6; the collector of the opto-isolator I1 is the CHECK port and is connected with the resistor R4. The power supply is connected to +5V, and the emitter of the opto-isolator I1 is grounded;

[0028] The cathode of the opto-isolator I2 is connected to the power supply +12V through the resistor R2. The anode of the opto-isolator I2 is the CC2 port and is grounded through R3; the collector of the opto-isolator I2 is the DC_DETECT port and is connected to the power supply +5V through the resistor R5. The emitter of isolator I2 is groun...

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Abstract

The invention discloses a direct-current charging safety monitoring device for an electric automobile. The direct-current charging safety monitoring device comprises a signal detection circuit and a microprocessor, wherein the signal detection circuit is connected with the microprocessor. A handshake analog signal is skillfully converted into a digital signal through a photoelectric coupled isolate circuit, so that the difficulty in data processing is lowered; isolation between the detection circuit and a single-chip microcomputer is realized through a signal isolation circuit; compared with charging handshake by means of A / D (Analog / Digital) detection, the direct-current charging safety monitoring device has the advantage that the circuit cost is relatively low.

Description

technical field [0001] The invention relates to a safety monitoring device for direct current charging of electric vehicles. Background technique [0002] Energy crisis and environmental pollution are the two major problems facing the world today, and electric vehicles and hybrid vehicles have attracted more and more attention as ideal zero-emission or low-emission vehicles. As the main power source of electric vehicles, the safety of power battery packs has always been the focus of attention. The safe charging of electric vehicles is a necessary prerequisite to ensure the safe operation of electric vehicles. [0003] At present, most of the charging piles use high-current fast charging. If the battery cannot stop charging in time after being fully charged, the battery will heat up, and overcharging will accelerate the aging of the battery and affect the service life of the battery. Therefore, measures must be taken to monitor the charging of the battery. Safe charging mon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18G01R31/02
CPCY02T10/70
Inventor 张陈斌汪玉洁张旭武骥吕纬陈宗海
Owner ANHUI GVB RENEWABLE ENERGY TECH
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