Portable charger capable of automatically judging polarity of power supply

• Main Authors: WEI SHAOKANG, WANG ZUNRONG, YAN XIAOSONG, JIN YANWEN, XU JUN, TIAN QUANSHENG, CHI XUDONG, GAO ZHENXING, QI CHANGZHI, XIN XIANGJUN, LIN CONGYU, XIN JING, CHEN TAO, LIU DONGMING, LIU BINGE, BI XIAOYAN, GAI DELIANG, LIU GUILING
• Format: Patent
• Language: Chinese; English
• Published: 10.12.2014
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The utility model discloses a portable charger capable of automatically judging polarity of a power supply, which comprises a portable charger (1), a portable charger output switch (2), and a protection relay operating contact (3), and is characterized in that the protection relay operating contact (3) is connected with a polarity detection judging device (4); the polarity detection judging device (4) comprises a protection relay start module (4-1), a polarity detection judging module (4-2), a lamp and a sound alarming module (4-3); and the protection relay start module (4-1), the polarity detection judging module (4-2), the lamp and the sound alarming module (4-3) are respectively connected with a substation DC system power bus (5) and the protection relay operating contact (3). The portable charger capable of automatically judging polarity of the power supply has the advantages that timely alarming can be carried out, personal and equipment safety can be ensured, wiring is simple, the workload is small, and