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Remanent electric quantity closed-loop controlling method for vehicle-carried auxiliary power accumulator set

A power battery, closed-loop control technology, applied in battery circuit devices, secondary battery charging/discharging, regulating electrical variables, etc., can solve the problem of SOC estimation deviation, unsatisfactory transient control effect, and transient changes in battery remaining power. Insufficient and other problems, to achieve the effect of reducing the control deviation and improving the transient control effect

Active Publication Date: 2008-07-02
SHANGHAI FUEL CELL VEHICLE POWERTRAIN +1
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AI Technical Summary

Problems solved by technology

However, so far, the problem of SOC estimation for vehicle-mounted power batteries has not been well resolved, mainly because SOC estimation is prone to deviations and does not reflect the transient changes in battery remaining power, which leads to the actual remaining power regulation as follows: question:
[0006] b) The transient control effect is not ideal

Method used

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  • Remanent electric quantity closed-loop controlling method for vehicle-carried auxiliary power accumulator set
  • Remanent electric quantity closed-loop controlling method for vehicle-carried auxiliary power accumulator set
  • Remanent electric quantity closed-loop controlling method for vehicle-carried auxiliary power accumulator set

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Embodiment Construction

[0031] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present invention, and all similar methods and similar changes of the present invention should be included in the protection scope of the present invention.

[0032] The invention establishes a dynamic mathematical model of the power battery, constructs a state observer of the open-circuit voltage of the power battery based on the model, and performs closed-loop control on the observed value of the open-circuit voltage of the battery to realize the adjustment of the remaining power. For the on-board power battery, the estimated value of SOC is prone to deviation, and the transient fluctuation of the remaining power is insufficiently reflected. If the SOC estimated value is used for closed-loop control to adjust the remaining battery power, it is easy to produce control deviation and the...

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Abstract

The invention discloses a vehicle-carrying assistant motor accumulator surplus electric closed ring control method in the field of accumulator surplus electric control technology. The control method comprises: the closed ring controller sets and outputs the order to the mixed motor convention by the defection of the expecting value and the observing value of the accumulator open loop voltage to adjust the power of the mixed motor convention; the mixed motor convention uses motor accumulator group to output the accumulator current and voltage measuring value to the closed ring controller; it uses accumulator open loop voltage observing value to do closed ring control to achieve the motor accumulator surplus electric adjusting.

Description

technical field [0001] The invention relates to a method for adjusting the remaining power of a vehicle-mounted auxiliary power storage battery, in particular to a hybrid electric vehicle (including a fuel cell hybrid vehicle, an internal combustion engine hybrid vehicle or other vehicles with two power sources containing a vehicle-mounted auxiliary power storage battery) ) method for adjusting the remaining power of the vehicle-mounted auxiliary power battery pack. Background technique [0002] In the face of increasingly serious energy shortage and environmental degradation, it is becoming a worldwide trend to seek a sustainable development model in which society, economy, resources, and environment promote each other and coordinate development. In this context, hybrid electric vehicle technology has become a hot spot in the field of automotive research. The system makes the two kinds of power devices organically coordinate and cooperate to realize the best energy distrib...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/44G05F1/00G01R31/36H02J7/00
CPCY02E60/12Y02E60/10
Inventor 万钢钟再敏贠海涛孙泽昌
Owner SHANGHAI FUEL CELL VEHICLE POWERTRAIN
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