A split-type DC charging pile, system and method for electric vehicles
A technology for DC charging piles and electric vehicles, which is applied in the fields of electric vehicle charging technology, electric vehicles, secondary battery charging/discharging, etc., and can solve the problems of low utilization rate of charging piles at night, large cabinet footprint, and large average power, etc. problem, to achieve the effect of flexible charging combination, small footprint and low power
Active Publication Date: 2017-04-05
SHANDONG LUNENG SOFTWARE TECH
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Problems solved by technology
[0005] Chinese patent CN 103904737 A proposes a charging scheme with one charge and two charges. This solution can only realize the output of a single gun. When one gun is working, the other gun cannot work;
However, this solution requires a large number of DC contactors to realize power expansion, which is costly and occupies a large area of the cabinet; after expansion, only two guns can be output, and the average power of a single gun is relatively large, which also causes charging piles to be damaged. The problem of low nighttime utilization
It can be seen that this kind of charging pile has certain limitations in the construction of charging stations.
Method used
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[0053] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0054] Such as figure 1 As shown, taking 4 charging piles with a single pile power of 30KW as an example to form a group (but not limited to 4, multiple piles can be paralleled according to actual needs), the core technology of charging piles to realize group parallel work is explained.
[0055] A split DC charging pile, system and method for an electric vehicle, including a charger screen and a DC charging pile;
[0056] The screen body of the charger includes the main switch of AC incoming line, surge arrester, AC bar, grouped charging module, 1# positive and negative bus bar, 2# positive and negative bus bar, 3# positive and negative bus bar, 4# positive and negative bus bar, and parallel Machine contactor, TC terminal, discharge relay, discharge resistor, charging module communication switching intermediate relay, temperature controller, filter fan...
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The invention discloses a split-type DC charging pile, system and method for an electric vehicle. The split-type DC charging pile is connected in parallel to an AC terminal, and the charging module in the charger screen of each split-type DC charging pile is converging through a parallel contactor. The rows are connected in turn to form a loop. The master control module, front acquisition module and rear acquisition module of each split DC charging pile are connected through the CAN bus, and the rear acquisition module realizes electric energy intelligence by controlling the closing and closing of the parallel contactor. Load distribution, the charging module communicates with the corresponding DC charging pile master control module through the CAN bus, and the charging module is connected with the adjacent charging module through the parallel connection of the normally open contact of the intermediate relay to form a CAN communication loop, and each charging module responds During power allocation, the intermediate relay is connected to the master control module of the DC charging pile that needs power allocation, and centralized control is performed; the charging combination mode of the present invention is flexible, the comprehensive cost is low, and the utilization rate of the charging module is high.
Description
technical field [0001] The invention relates to a split-type DC charging pile, system and method for electric vehicles. Background technique [0002] The crisis of traditional energy sources such as oil and coal continues to deepen, and the atmospheric environment continues to deteriorate. Energy conservation and emission reduction have become the main direction of future automotive technology development. Continuous breakthroughs in lithium-ion battery technologies such as lithium iron phosphate and modified lithium manganese oxide have opened up broad prospects for the popularization of electric vehicles. The subsequent construction of charging facilities is particularly important, and the construction of charging facilities needs a good operating model as a support. [0003] The charging station is equipped with a small energy storage station to store energy during the valley value of the power grid at night, and the operation plan of energy consumption during the peak p...
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IPC IPC(8): H02J7/00H02J7/02H01M10/44
CPCY02T90/16Y02T10/7072Y02T90/14B60L53/31B60L53/11B60L53/67H02J2310/48Y02T10/70Y02T90/12H02J7/0013H02J7/0042
Inventor 杨勇陈嵩胡勇童晓霖王立军杨军洲
Owner SHANDONG LUNENG SOFTWARE TECH