A bsg motor control system for commercial vehicles

A BSG motor and control system technology, which is applied to the motor starting of the engine, the layout of the power unit control mechanism, and the mechanical equipment, etc., can solve the problems of insufficient starting torque of BSG and immature technology of 48V to 24V DC voltage reducer.

Active Publication Date: 2021-07-06
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects existing in the prior art, the object of the present invention is to provide a BSG motor control system for commercial vehicles, which solves the problems of insufficient BSG starting torque and immature technology of 48V to 24V DC step-down converter, and realizes the 48V system in the Application on commercial vehicles to achieve fuel saving and low cost

Method used

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  • A bsg motor control system for commercial vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] see figure 1 As shown, the embodiment of the present invention provides a BSG motor control system for commercial vehicles, which includes an engine 1, a 48V system 2, a 48V vehicle electrical appliance 3 and a controller 4, and the 48V system 2 includes a 48V battery 20 and a BSG motor connected in series 21. The 48V battery 20 and the BSG motor 21 are connected in series through a low-voltage wiring harness. The BSG motor 21 is a 48V BSG motor with a built-in motor controller MCU and inverter ACDC. The starting power of the BSG motor is 5-20KW, and the starting torque is 20-80Nm . The 48V vehicle electrical appliance 3 and the 48V battery 20 are connected in parallel through the low-voltage wiring harness; the controller 4 is connected to the 48V system 2 and the engine 1; meanwhile, the controller 4 is used for:

[0040] When the commercial vehicle starts, a start command is issued, and the controller 4 accepts the start command, and the controller 4 is connected to...

Embodiment 2

[0046] The basic content of embodiment 2 of the present invention is the same as embodiment 1, and difference is:

[0047] When the commercial vehicle brakes, when the brake pedal is stepped on to send a brake command, the controller 4 accepts the brake command, and the controller 4 is also used for: detecting the electric quantity of the 48V battery 20, when the electric quantity of the 48V battery 20 is lower than a threshold value (such as 20%) ), control the BSG motor 21 to charge the 48V battery 20 to ensure the normal operation of the 48V battery 20.

Embodiment 3

[0049] The basic content of embodiment 3 of the present invention is the same as embodiment 1, and difference is:

[0050] Controller 4 is also used to:

[0051] When the brake pedal is stepped on until the engine 1 stops running completely, the engine 1 no longer drives the BSG motor 21 in reverse, and now the 48V battery 20 is controlled to supply power to the 48V vehicle electrical appliance 3, thereby achieving the purpose of power supply during parking.

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Abstract

The invention discloses a BSG motor control system for a commercial vehicle, which relates to the technical field of new energy vehicles, which includes an engine, a 48V system, a 48V vehicle electrical appliance and a controller; the 48V system includes a 48V battery and a BSG motor connected in series; the 48V vehicle The electrical appliance is connected in parallel with the 48V battery; the controller is connected with the 48V system and the engine; at the same time, the controller is used to: when starting, control the output power of the 48V battery to make the BSG motor run, and drive the engine to output power through the BSG motor; When accelerating, control the BSG motor to accelerate to increase the power output by the engine; when braking, control the engine to reverse drive the BSG motor so that the BSG motor supplies power to the 48V vehicle electrical appliances. It solves the problems of insufficient starting torque of BSG and immature technology of 48V to 24V DC step-down converter, realizes the application of 48V system in commercial vehicles, and achieves the goal of fuel saving and low cost.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a BSG motor control system for commercial vehicles. Background technique [0002] Under the pressure of national environmental protection regulations and market fuel consumption indicators, the application of new energy technologies in the field of commercial vehicles has begun to take shape, mainly including pure electric technology and hybrid technology, and both involve the intervention of high-voltage systems. Since commercial vehicles such as logistics tractors, muck trucks, and medium-sized trucks require long-term high-power output, the relative lack of power and high price of the high-voltage system limit its application in the commercial vehicle market. [0003] Chinese patent document 201520357631.9 discloses a dual-voltage hybrid power supply system for commercial vehicles. The battery, generator and starter of this patent are all 24V, and 12V is converted ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): F02N11/08F02B63/04B60K26/02B60W30/18
CPCB60K26/02B60W30/18009F02B63/04F02N11/08F02N11/0862
Inventor傅涛汪秀秀涂志涛杨青牟洋何斌
OwnerDONGFENG COMML VEHICLE CO LTD