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A new energy vehicle driving effective discharge power switching method

A new energy vehicle, discharge power technology, applied in the direction of electric vehicles, electrical devices, vehicle components, etc., can solve the problems of increasing the complexity of VCU control, unable to control the power change rate in the current state, etc.

Active Publication Date: 2020-12-25
力高(山东)新能源技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are the following disadvantages in the prior art: 1. Increased the complexity of VCU control; 2. When switching the discharge power, such as switching from 10S power to 60 power, the BMS cannot control the power change rate for the current state

Method used

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  • A new energy vehicle driving effective discharge power switching method
  • A new energy vehicle driving effective discharge power switching method

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Embodiment Construction

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0024] The method for switching the effective discharge power of a new energy vehicle running in an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0025] According to the purpose of the present invention, an embodiment of the present invention provides a flow chart of a method for switching the effective discharge power of a new energy vehicle. The method mainly includes the following steps:

[0026] Step 1. Obtain the current actual discharge power P of the battery syst...

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Abstract

The invention provides a new energy automobile running effective discharge power switching method. The method comprises the following steps that a warning discharge power is set, and if a monomer is not undervoltage, whether the actual discharge power P <Active> exceeds the warning discharge power P <warning> or not is judged, so that according to the relationship between the preset time t1, t2 and t3, effective discharge power switching is realized; and if the monomer is undervoltage, the effective discharge power P <out> is reduced to 60S power P <60S> according to the slope S4, so that effective power switching is realized. According to the effective discharge power switching method, a VCU decides the available maximum discharge power only according to the BMS effective discharge power,and meanwhile, according to the different discharge states, the power change speed in the switching process is controlled, and the target of controllable process is achieved.

Description

technical field [0001] The invention relates to the field of battery management of new energy vehicles, in particular to a method for switching effective discharge power of new energy vehicles during driving. Background technique [0002] In the BMS control of new energy vehicles in existing products, there is no calculation of effective discharge power. Existing products directly calculate the allowable discharge current within 10S and the allowable discharge current within 60S of the battery. These two values ​​are multiplied by the current total voltage of the battery to obtain the allowable discharge power of 10S and the allowable discharge power of 60S respectively, and then the These two signals are sent to the VCU to allow the VCU to select the effective discharge power. [0003] However, there are the following disadvantages in the prior art: 1. The complexity of VCU control is increased; 2. When switching the discharge power, for example, switching from 10S power t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/14B60L3/00
CPCB60L3/0046B60L58/14Y02T10/70
Inventor 胡亮王翰超王云姜明军尹坤孙艳刘欢李杰
Owner 力高(山东)新能源技术股份有限公司