Control method of hybrid power system, controller and hybrid power system

A technology of a hybrid power system and a control method, which is applied to hybrid power vehicles, control drives, control devices, etc., to enhance system robustness, reduce the probability of reporting overcurrent faults, and reduce the probability of reporting overcurrent faults or damage Effect

Active Publication Date: 2020-12-01
UNITED AUTOMOTIVE ELECTRONICS SYST
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Problems solved by technology

[0005] Therefore, how to provide a control scheme for a hybrid power system, which can prevent the battery from reporting errors or damage due to overcharging in special working conditions such as extremely low temperature environments from a control point of view, and ensure the stable operation of the hybrid power system is an art in the art. A technical problem that personnel urgently need to solve

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  • Control method of hybrid power system, controller and hybrid power system
  • Control method of hybrid power system, controller and hybrid power system
  • Control method of hybrid power system, controller and hybrid power system

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Embodiment Construction

[0049] In order to describe the technical solution of the above invention in more detail, specific examples are listed below to demonstrate the technical effect; it should be emphasized that these examples are used to illustrate the present invention and not limit the scope of the present invention.

[0050] Please refer to figure 2 , an embodiment of the present invention provides a control method for a hybrid power system, the core of which is: when it is recognized that the battery charging capacity is seriously insufficient due to a special working condition, the control mode of the motor is switched from the torque control mode to the voltage control mode in time Mode, so that the hybrid system can continue to operate stably under special working conditions. Further, by reasonably setting the control parameters, it is ensured that the drivability of the vehicle will not be significantly affected during the control mode switching and subsequent operation. The control met...

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Abstract

The invention relates to a control method of a hybrid power system, a controller and the hybrid power system. When it is identified that the battery charging capacity of the hybrid power system is seriously insufficient due to a special working condition, a control mode of a motor of the hybrid power system can be switched into a voltage control mode in time; at the moment, the target working current of the battery of the hybrid power system under the special working condition can be calculated, control parameters including the target working voltage of the motor are generated according to thetarget working current; therefore, the motor can adjust the output torque in real time according to the control parameters and stably work in the voltage control mode; and the actual working currentof the battery reaches the target working current so that the hybrid power system can continuously and stably operate under the special working condition, the probability that the battery reports an overcurrent fault or is damaged due to overcharge under the special working condition is reduced, and the robustness of the system is enhanced.

Description

technical field [0001] The invention relates to the field of hybrid power control, in particular to a control method, a controller and a hybrid power system of a hybrid power system. Background technique [0002] Hybrid power generally refers to gasoline-electric hybrid power, that is, a mixture of fuel (gasoline, diesel) and electric energy. 48V weak hybrid (that is, 48V weak hybrid, or 48V mild hybrid) technology is a low-cost fuel-saving technology newly proposed in recent years. It can also be understood as a set of new automotive industry standards. The basic idea is to increase the standard voltage of vehicle equipment from the original 12V to 48V, so that it can drive a higher-power vehicle system and achieve better integration with other systems on the vehicle. At the same time, the 48V motor participates in the power system , to avoid the low-efficiency operating range of engine output, so as to achieve the effect of saving fuel. Please refer to figure 1 From a c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/15B60W20/20B60W10/08B60L15/20
CPCB60L15/20B60L2240/423B60L2240/427B60L2240/429B60W10/08B60W20/20B60W2510/083B60W20/15Y02T10/72
Inventor 丁明超唐高强翟奇孔令伟苗永胡海平
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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