Optimized energy system for electric automobile
An energy system, electric vehicle technology, applied in electric vehicles, efficient vehicle charging, current collectors, etc., can solve problems such as affecting the driving range and power of the vehicle, and consuming high-voltage energy system energy.
Active Publication Date: 2015-05-13
BEIJING ELECTRIC VEHICLE
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Problems solved by technology
[0005] The technical problem solved by the present invention is to effectively solve technical problems such as low-voltage energy system and low-voltage power consumption system consume high-voltage energy system energy and affect the mileage and dynamic performance of the whole vehicle.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0023] Example 1: In figure 2 Medium and low-voltage energy systems 2 use 12.8V100Ah energy-type lithium iron phosphate power battery packs, and high-voltage energy system 1 uses 336V60Ah energy-type lithium iron phosphate power batteries, which are connected in parallel in the power supply circuit of the vehicle-mounted charger 3 for the vehicle's low-voltage power consumption system A power supply circuit is output to the low-voltage energy system 2.
Embodiment 2
[0024] Example 2: In figure 2 Medium and low-voltage energy systems 2 use 14.8V100Ah energy-type lithium manganate power battery packs, and high-voltage energy systems 1 use 336V70Ah energy-type lithium manganate power batteries, which are connected in parallel in the power supply circuit of the vehicle-mounted charger 3 for the low-voltage power system of the vehicle A power supply circuit is output to the low-voltage energy system 2.
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The invention discloses an optimized energy system for an electric automobile. The optimized energy system comprises a high-voltage energy system, a low-voltage energy system, a high-voltage power system, a low-voltage power system, a vehicle-mounted charger, a high-voltage main relay and two low-voltage relays; the high-voltage energy system is connected with the high-voltage power system through the high-voltage main relay; the low-voltage energy system is connected with the low-voltage power system through the low-voltage relays; and a high-voltage output end of the vehicle-mounted charger is connected with the high-voltage energy system, and a low-voltage output end of the vehicle-mounted charger is connected with the low-voltage power system through the low-voltage relays and is connected with an input end of the low-voltage energy system. After the energy system is designed optimally, the electric automobile does not need direct current / direct current (DC / DC), so that manufacturing cost is reduced. Besides, when the electric automobile runs normally, the low-voltage power system does not consume the electricity of the high-voltage energy system, so the energy utilization rate is improved, and the energy consumption of the high-voltage energy system is reduced.
Description
technical field [0001] The invention relates to the technical field of electric vehicle energy, in particular to an optimized electric vehicle energy system. Background technique [0002] As environmental pollution and energy shortages have an increasing impact on the earth's ecology and people's lives, the development of new energy vehicles to replace traditional fuel vehicles has become an inevitable trend in today's social development. [0003] At present, the development of new energy vehicles in the world is mainly focused on the design and manufacture of electric vehicles, and the industrialization of electric vehicles is based on the transformation of the original traditional vehicles, and the newly designed power battery system is used as a high-voltage energy system. The starting lead-acid battery on the vehicle is used as a low-voltage energy system, DC / DC is used to charge the low-voltage energy system, and the on-board charger is used to charge the high-voltage e...
Claims
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IPC IPC(8): B60L11/18B60L1/00
CPCY02T10/92
Inventor 盛军俞会根王彦红宋佳
Owner BEIJING ELECTRIC VEHICLE