Electric appliance load power supply system and power supply method of 48V micro-hybrid automobile
A technology of power supply system and power supply method, which is applied to load supply circuits, current collectors, electric vehicles, etc., can solve problems such as dimming of headlights, unstable voltage of the power supply system of the whole vehicle, and deterioration of power steering, so as to ensure the balance between supply and demand Effect
Pending Publication Date: 2021-11-23
CHERY AUTOMOBILE CO LTD
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However, since the 48V battery is the main source of power supply for the 12V battery and 12V load in the car, if part of the electric energy is provided to the 48V BSG motor for boosting, the electric energy provided to the 12V electric load will be reduced, which may reduce the voltage of the entire vehicle power supply system. Unstable, such as dimmed headlights, high and low wind from the air conditioner, poor power steering, etc.
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[0038] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.
[0039] figure 1 It is a structural block diagram of an electrical load power supply system for a 48V micro-hybrid vehicle provided by an embodiment of the present disclosure, such as figure 1 As shown, the electrical load power supply system 100 includes an HCU 10 , a DCDC voltage converter 20 , a 48V BSG motor 30 , a 48V battery 40 , a 12V battery 50 and a 12V load 60 .
[0040] The HCU 10 is connected to the DCDC voltage converter 20 . The DCDC voltage converter 20 is connected between the 48V battery 40 and the 12V battery 50 . The DCDC voltage converter 20 is used to convert the 48V voltage output by the 48V battery 40 into a 12V voltage and output it to the 12V battery 50 . The 48V battery 40 is connected to the BSG motor 30 . Electr...
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The invention provides an electric appliance load power supply system and a power supply method of a 48V micro-hybrid automobile, and belongs to the field of hybrid electric vehicle control. The electric appliance load power supply system comprises an HCU, a DCDC voltage converter, a 48VBSG motor, a 48V battery, a 12V storage battery and a 12V load. The HCU is connected with the DCDC voltage converter, and the DCDC voltage converter is connected between the 48V battery and the 12V storage battery; the 48V battery is electrically connected with the BSG motor, and the 12V storage battery is electrically connected with the 12V load; and the HCU is used for controlling the output power of the 12V end of the DCDC voltage converter to be the rated power of the DCDC voltage converter when it is determined that the vehicle is in the acceleration state. By adopting the electric appliance load power supply system, stable electric energy can be provided for the 12V storage battery and the 12V load, and the balance of power supply and demand of the whole vehicle is ensured.
Description
technical field [0001] The present disclosure relates to the field of hybrid vehicle control, in particular to a power supply system and a power supply method for an electrical load of a 48V micro-hybrid vehicle. Background technique [0002] With the acceleration of the modernization of the automobile industry, the number of on-board electrical equipment is increasing day by day, and the requirements for the voltage of the car battery are getting higher and higher. The traditional 12V voltage can no longer support the current car with many on-board electrical equipment. Therefore, the 48V power system gradually began to develop. The 48V micro-hybrid system is one of the power systems. Compared with ordinary models, the 48V micro-hybrid system can reduce fuel consumption by 10% to 20%. [0003] The electrical load power supply system of 48V micro-hybrid vehicle mainly includes hybrid vehicle controller (HybridControl Unit, HCU), DC-DC (Direct Current-Direct Current, DCDC) ...
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IPC IPC(8): H02J7/00B60L1/00B60L58/12
CPCH02J7/0063B60L1/00B60L58/12Y02T10/70Y02T10/72
Inventor 文柳龙苏华王大丽吴鹏陈威
Owner CHERY AUTOMOBILE CO LTD