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A hybrid power system and its cold start method

A hybrid system and hybrid technology, applied in hybrid vehicles, motor vehicles, transportation and packaging, etc., can solve the problems of high startup noise, increase production costs, and long startup time, reduce capacity requirements, and reduce material costs. , the effect of saving interior space

Active Publication Date: 2021-06-08
UNITED AUTOMOTIVE ELECTRONICS SYST
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Problems solved by technology

In order to cover the working conditions of low-temperature cold start, the power system has certain requirements on the capacity and discharge power of the control power supply, which increases the production cost
At the same time, the traditional motor also has the disadvantages of long start-up time and large start-up noise.
[0004] To sum up, the disadvantage of the traditional hybrid system is that it must contain two sets of high-performance and large-capacity batteries (48V and 12V), the power system has redundancy, the battery utilization rate is not high enough, and the cost of the power system remains high

Method used

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  • A hybrid power system and its cold start method
  • A hybrid power system and its cold start method
  • A hybrid power system and its cold start method

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Embodiment Construction

[0052] In order to make the purpose and features of the present invention more obvious and understandable, the specific implementation of the present invention will be further described below in conjunction with the accompanying drawings. However, the present invention can be implemented in different forms and should not be limited to the described embodiments.

[0053] Such as figure 2 A hybrid system 3 shown includes a power battery 31 , a hybrid control unit 32 (connection not shown), a DC-DC conversion module 33 , a control power supply 34 , a power recovery motor 35 , and an engine 36 . The power battery 31 is connected with the transmission mechanism 1 in the vehicle, and provides power for the transmission mechanism 1, so that the vehicle moves. The power battery 31 and the engine 36 time-sharingly drive the transmission mechanism 1 according to the following principles:

[0054]a. When the vehicle is running normally, the engine 36 is in working condition, and the po...

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Abstract

The present invention provides a hybrid power system. The power battery provides a power source for the transmission mechanism. The power battery includes a supercapacitor module and a lithium battery module; a DC-DC conversion module realizes bidirectional charging between the control power supply and the power battery The engine is used to provide power energy for the transmission mechanism when the energy of the power battery is insufficient; the power recovery motor recovers energy when the engine brakes and stores it in the power battery, and when the engine starts Start the engine, and accelerate the engine when the engine accelerates; the hybrid control unit is connected with the power battery, DC-DC conversion module, control power supply, and power recovery motor respectively, and the hybrid control unit A unit control coordinates the work within the hybrid system. The invention has the advantages of canceling the special starting motor for the engine, reducing the cost of materials, saving the space in the car, and simultaneously reducing the performance requirements of the control power supply.

Description

technical field [0001] The invention relates to the field of power systems of automobiles, in particular to a hybrid power system and a cold start method thereof. Background technique [0002] Electric vehicles refer to vehicles powered by vehicle-mounted power supplies, driven by motors to drive wheels, and meeting the requirements of road traffic and safety regulations. Because it has less impact on the environment than traditional cars, it is currently a recommended model. Electric vehicles are divided into: pure electric vehicles (BEV), hybrid electric vehicles (PHEV), and fuel cell vehicles (FCEV). At present, pure electric vehicles cannot be widely used due to the imperfect charging facilities. Hybrid electric vehicles are supplemented by two energy sources, battery and fuel, which jointly provide power for vehicles. Because the fuel used can be replenished in time and have better flexibility, hybrid electric vehicles are currently the main models. [0003] Such as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/00B60W10/06B60W10/26
CPCB60W10/06B60W10/26B60W20/00B60W2710/06
Inventor 张光耀马勇王明强
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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