Plug-in hybrid electric bus power supply system

Abstract

The invention provides a plug-in hybrid electric bus power supply system, the positive pole of the 24V battery group is connected with a power switch, the power switch is connected with a ON power switch, an ACC power switch and a start power switch respectively, the connection and disconnection of the coil of a first relay is controlled by the start power switch, the connection and disconnection of the coil of a second relay is controlled by the ON power switch; the positive pole of the12V battery group is connected with the end of the first relay with normal open touch points, and the end of the second relay with normal open touch points, and the constant electric end of the12V drive box control device respectively, the other end of the first relay with normal open touch points is connected with the signal starting end of the 12V drive box control device, the other end of the second relay with normal open touch points is connected with the IG ignition power end of the 12V drive box control device, the 24V vehicle control device and the ACC power switch are connected, the 24V vehicle control device and the 12V drive box control device are connected through a first route CAN bus, and the vehicle is controlled in a power-on and power-off mode by the power system through a CAN communications agreement. The system is novel in design, safe and reliable.

Description

technical field [0001] The invention relates to an automobile power supply system, in particular to a plug-in hybrid power bus power supply system. Background technique [0002] With the development of hybrid electric vehicles, it has gradually expanded from domestic cars to buses for transportation, and for hybrid electric buses, the known power supply system is generally 24V power supply system, so it is necessary to develop corresponding supporting 24V buses for use At present, domestic parts companies have not yet developed a strong hybrid system for planetary gear mechanisms for buses. At present, a 12V hybrid transmission box that can be used for plug-in hybrid vehicles has been developed on the market. 12V hybrid The planetary gear mechanism is used in the power transmission box. The planetary gear mechanism can split the power. The main function is to adjust the engine speed through the dual motors so that the engine can run in a high-efficiency area. At the same tim...

AI Technical Summary

Problems solved by technology

However, currently on the market, on the one hand, the transmission box controller, motor controller, and oil pump controller that match the 12V hybrid transmission box are only suitable for 12V power supply systems. If a new 24V power supply system is developed, the investment will be large and the development cycle will be long. It will increase the cost of the enterprise; on the other hand, the components in the bus industry all use 24V power supply systems. If manufacturers of 24V power supply system components are required to develop 12V power supply systems, there will be too many components that need to be redeveloped, and the cost will be too high. will increase the cost of the business

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