DC-DC conversion circuit, DC-DC conversion equipment, low-voltage power supply circuit and vehicle

• Main Authors: YUE ZHIQIN, ZHANG JINYI, GAO HUAN, CHENG PENG, GAO TIANQI, ZHANG PAN, WANG YILONG, JI WEIWEN, CHEN FEI, LI SHENGHUI
• Format: Patent
• Language: Chinese; English
• Published: 24.10.2023
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; PERFORMING OPERATIONS; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

The utility model provides a direct current-direct current conversion circuit, equipment, a low-voltage power supply circuit and a vehicle. The conversion circuit comprises a direct current-direct current converter, a first switch and a controller, the first output end of the DC-DC converter is connected with the first end of the first switch and is also used for being connected with the first end of a first load; the second end of the first switch is connected with the first end of a second load, and the control end is connected with the controller; the first end of the second load is further connected with the positive electrode of the storage battery, and the second end of the second load is further connected with the negative electrode of the storage battery; the controller is configured to control the first switch to be switched off when it is detected that the output voltage of the DC-DC converter is smaller than a preset voltage value. When the output voltage of the direct current-direct current conver