DC charging control method, online adding detection method and high-power group charging system
A detection method and detection value technology, applied in charging stations, electric vehicle charging technology, secondary battery charging/discharging, etc., can solve the problems of relay K2 sticking fault, relay sticking fault, etc., so as to avoid misjudgment of charging channel fault. Effect
Active Publication Date: 2021-05-11
XIAN TGOOD INTELLIGENT CHARGING TECH CO LTD
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Problems solved by technology
[0010] Since the input voltage detection value V ins (294.38V) is close to the self-test voltage (300V), and the absolute value of the difference is less than the preset value of 20V, so it may be misjudged that the relay K2 of the charging channel is stuck.
Moreover, when the power module added online is replaced and the charging channel detection is continued, this kind of misjudgment will still occur, which will cause the relay to always report a sticking fault
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[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0051] figure 2 It is a flow chart of the first embodiment of the online charging channel detection method of the present invention. Firstly, when charging an electric vehicle, a power module and the corresponding charging channel will be opened first. If the requirements of the BMS module are not satisfied at this time, Charging requirements will be added to power modules online one by one. Moreover, before adding a power module online, the charging channel...
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The invention relates to a DC charging control method, an online charging detection method, a high-power group charging system and its control module. The online charging detection method of the charging channel includes: obtaining the current battery voltage issued by the BMS module of the electric vehicle; The battery voltage determines the self-test voltage of the power module, and sends a start command to the power module so that the power module outputs a self-test voltage; samples the voltage between the positive input terminal of the PDU module and the negative output terminal of the PDU module, to obtain the input voltage detection value of the charging channel; determine whether the charging channel is faulty according to the input voltage detection value. Implementing the technical solution of the present invention can avoid misjudgment that the fault of the charging channel occurs.
Description
technical field [0001] The invention relates to the field of electric vehicles, in particular to a DC charging control method, an online charging detection method, a high-power group charging system and a control module thereof. Background technique [0002] The rapid development of the electric vehicle industry has led the rapid expansion of the global new energy field, forcing new energy to become another revolution in the high-tech industry in the 21st century. With the continuous increase in the sales of electric vehicles, a large number of enterprises that develop, produce, construct and operate various electric vehicle charging facilities have emerged around the world, and electric vehicle charging piles have rapidly spread to the north and south of the motherland. In response to the continuous improvement of the mileage of electric vehicles, a large number of customers, car companies, and battery manufacturers have an increasing demand for the charging power of curren...
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IPC IPC(8): B60L53/66B60L53/62
CPCH02J7/0077H01M10/44Y02E60/10Y02T10/70Y02T10/7072Y02T90/12Y02T90/16
Inventor 邓兴旺李森沈得贵
Owner XIAN TGOOD INTELLIGENT CHARGING TECH CO LTD