Early warning method and device for faults of direct-current charging pile
A fault warning and charging pile technology, applied in the detection field, can solve problems such as inability to make correct judgments and fault detection, and achieve the effects of improving flexibility and efficiency, improving safety, and reducing costs
Inactive Publication Date: 2021-06-18
北京公共交通控股(集团)有限公司
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Problems solved by technology
All the analysis results of this technology come from the data at the charging pile end, and are not integrated, analyzed and compared with the data at the vehicle power battery end. When the data collected at the charging pile end is wrong, this method cannot make a correct judgment, resulting in missed fault detection
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[0043] 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.
[0044] At present, the charging module and charging circuit of the DC charging pile will increase the line impedance caused by line aging or poor contact during use, which will generate additional energy loss and reduce charging efficiency. If it cannot be checked out in time, it may also cause potential safety hazards. , Seriously affecting the service quality of charging piles.
[0045] Aiming at the defects existing in the prior art, the present invention p...
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The invention provides an early warning method and device for faults of direct-current charging pile. The method comprises the following steps: acquiring the output electric quantity of the charging pile and the input electric quantity charged into a vehicle in each charging process of the charging pile; determining the charging efficiency of each charging process of the charging pile according to the output electric quantity of the charging pile and the input electric quantity charged into the vehicle; and carrying out early warning about the faults of the charging pile according to the charging efficiency of each charging process of the charging pile. According to the invention, the hidden danger problem of the charging pile can be found in time, the dangers of line overheating, fire catching and the like caused by virtual connection of lines and aggravation of poor contact faults are prevented, and safety is improved; and data analysis can be conducted through a remote terminal, so the limitation of the place where the hardware terminal is located is further broken through, remote data sharing is achieved, the operation state of the charging pile is monitored at any time, and the working flexibility and efficiency of personnel are improved.
Description
technical field [0001] The invention relates to detection technology, in particular to a method and device for early warning of DC charging pile failures. Background technique [0002] The rapid development of new energy vehicles has driven the promotion of power battery charging facilities. Due to the high capacity of large and medium-sized new energy buses, the required charging time is short, and the charging method is mainly based on off-board DC chargers. The DC charging pile is fixedly installed outside the electric vehicle and connected to the AC power grid. The input of the DC charging pile is three-phase alternating current, and the charging module (rectifier module) converts the three-phase alternating current into direct current to charge the power battery of the electric vehicle. [0003] The charging module and charging circuit of the DC charging pile will increase the line impedance caused by line aging or poor contact during use, which will generate additiona...
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IPC IPC(8): B60L53/60G01R31/00G01R31/56H02J7/00
CPCB60L53/60H02J7/0047H02J7/0029G01R31/00G01R31/56Y04S30/12Y02T10/70Y02T10/7072Y02T90/12Y02T90/167
Inventor 邵强钟强华倪丹陈兴付王姗姗孙强
Owner 北京公共交通控股(集团)有限公司