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New gb how to charging pile "charging" to justice

Date: 2017-03-28
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Is the new national standard, the quasi issued two test standard: the electric car charger and battery management system of vehicle transmission type between the communication protocol conformance test "and the electric conduction charging interoperability test specification.
New gb is promulgated, charging pile protocol consistency problem can be solved, in the face of charging pile "charge" of the market, new gb how it can be "to justice?"This article will tells his story through three aspects to elaborate new national standard of the protocol conformance test.

 

New gb how to charging pile

 

 Why should a, new gb
Earlier, the national a GBT 27930-27930 "electric car charger and battery management system of vehicle transmission type communication protocol between" rules the communication protocol between the charger and BMS.However, because the standards are too broad, and companies, car companies understanding of standard error.As shown in the figure below, the BMS send charger "anomalies" battery message, but the charger still reply to BMS "still allowed to charge" message.Regardless of the battery charged anomalies and continue normal, muddle through, there will be great potential safety hazard.This, is charging pile "charge" of the market.

 

New gb how to charging pile

 State 27930 just charging standard, but there is no specific test content and test methods.How to deal with "charge"?This is the new national standard of reason.
Issued by the state to the electric car charger and battery management system of vehicle transmission type between the communication protocol conformance test ", the purpose is that according to the requirements of the relevant agreement standard, to increase the credibility of each implementation agreement standard, check each implementation and protocol standards compliance, eliminate every realize and understand the standards of ambiguity, to achieve the purpose of charging "only".
The complex communication protocols, new gb test?
Second, the new national standard test
Car charging process is mainly divided into four stages, protocol conformance testing rules on the charger was detected in four stages and BMS specification, analysis of BMS and charger is working correctly.
1, low voltage auxiliary power and charging handshake
Test system respectively send handshake message, identification of message, etc., test whether the charger insulation test, and test the charger and BMS are normal handshake and identification of message, feedback and it can accurate judgment in the error message inspection and output error message.

 

New gb how to charging pile

  Phase 2, charging parameter configuration
Test system to simulate the charger and charging BMS ready state respectively, respectively, to test whether BMS and charger made corresponding normal feedback, finish charging parameter configuration, entered the stage of normal charging.

New gb how to charging pile

    3, charging stage
Test system simulation message sent to investigate whether BMS and charger feedback send charging requirements, charging status, battery, battery status information such as temperature and voltage, and both the inspection to suspend charging are accurate judgment, charging into the end stage.

 

New gb how to charging pile

 4, charging end phase
Send charge to suspend the message test system respectively, test end of BMS and charger is normal charging process.

New gb how to charging pile  

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