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Management method of 12V storage battery working system of pure electric vehicle

A pure electric vehicle and working system technology, which is applied in the field of 12V battery working system and management of pure electric vehicles, can solve the problems of no suitable determination method for 12V battery selection, low power utilization efficiency, etc. Effect

Active Publication Date: 2013-07-17
CHERY AUTOMOBILE CO LTD
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Problems solved by technology

[0004] To sum up, there are the following technical problems in the prior art: there is no suitable method for determining the selection of the 12V battery and its DC / DC, and this results in low efficiency of electric energy utilization

Method used

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  • Management method of 12V storage battery working system of pure electric vehicle

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Embodiment Construction

[0043] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.

[0044] figure 1 The connection diagram of the 12V battery system is described. The on-board charger 2 converts AC mains power into DC high-voltage power, part of which is used to charge the power battery 3, part of which is used as input to DC / DC5, and the DC / DC output 9 is used to charge the 12V battery 6. At the same time, the on-board charger 2 can also output a DC 12V power supply to provide working power for the vehicle electrical appliance 4 , DC / DC5 and the acquisition board of the power battery 3 .

[0045] The method for energy management of the 12V storage battery of the pure electric vehicle in this embodiment is based on the demand of the electric load of the whole vehicle. The output power of the 12V battery plus the output power of DC / DC5 is equal to the electrical power r...

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Abstract

The invention relates to a 12V storage battery working system of a pure electric vehicle and a management method. A proper DC DC and a 12V storage battery are selected through simulating and calculating electrical apparatus load of a vehicle, and the power of the DC DC is reduced by the energy management method of the 12V storage battery, so that the cost is saved.

Description

technical field [0001] The invention belongs to the technical field of automobile control strategies, and relates to a method for energy management of a 12V storage battery of a pure electric vehicle, in particular to a working system and a management method of a 12V storage battery of a pure electric vehicle. Background technique [0002] Energy and the environment are closely related to the survival and development of human beings. Energy shortages and environmental protection requirements have promoted the development of pure electric vehicles. The simplest concept of pure electric is: equipped with a power battery and a drive motor, the power source of the whole vehicle comes from the power battery. Due to the cancellation of the engine, the generator used to power the 12V system of the whole vehicle is also cancelled, and it is necessary to increase the DC / DC to charge the 12V battery through the power battery. The 12V battery of a traditional car is mainly selected ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L11/18H01M10/44H02J7/00
CPCY02T10/7005Y02E60/10Y02T10/70
Inventor 张洪雷冯勇李陈勇
Owner CHERY AUTOMOBILE CO LTD
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