Railway engineering vehicle power battery energy feedback charging control system and method

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Railway engineering vehicle power battery energy feedback charging control system and method

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LIU SANSHUAI / XIAO GONGBIN / ZHANG DONGFANG / BAO RUI / XIAO XIAOSHAN / ZHUO HAIJUN / LIU JIE / GAO YONGTAO / PENG HUIWEN / ZHAO XIAOCHUAN / ... [more]

Abstract

The invention discloses an energy feedback charging control system and method for a power battery of a railway engineering vehicle, and the method comprises the following steps: S101), calculating the energy P load consumed by an auxiliary load when the railway engineering vehicle is in an electric braking working condition and operates normally; s102) judging whether the residual energy of the intermediate direct current loop is positive or not according to the P load, the wheel cycle braking energy P wheel cycle and the discharge current of the charge and discharge unit, if so, executing the step S103), and if not, skipping to the step S101) to execute; s103) calculating an allowable charging current value I1 of the electric braking energy; s104) calculating a charging current target value Itarget = min (I1, Itarget) according to the I1 in combination with a power battery allowable charging current value Itarget; and S105) controlling the charging and discharging unit to charge the power battery according to the target I. The technical problems that an existing power battery charging control mode is low in energy utilization rate, complex in system structure and high in cost can be solved.

本发明公开了一种铁路工程车动力电池能馈充电控制系统及方法，控制方法包括以下步骤：S101)当处于电制动工况且运行正常时，计算辅助负载上消耗的能量P负载；S102)根据P负载、轮周制动能量P轮周及充放电单元的放电电流判断中间直流回路的剩余能量是否为正，如果是则执行步骤S103)，如果否则跳转至步骤S101)执行；S103)计算电制动能量允许充电电流值I1；S104)根据I1，并结合动力电池允许充电电流值I允，计算充电电流目标值I目标＝min(I1,I允)；S105)按照I目标控制充放电单元对动力电池进行充电。本发明能解决现有动力电池充电控制方式能量利用率不高，系统结构复杂，成本较高的技术问题。

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Title :

Railway engineering vehicle power battery energy feedback charging control system and method

Additional title:

一种铁路工程车动力电池能馈充电控制系统及方法

Contributors:

LIU SANSHUAI (author) / XIAO GONGBIN (author) / ZHANG DONGFANG (author) / BAO RUI (author) / XIAO XIAOSHAN (author) / ZHUO HAIJUN (author) / LIU JIE (author) / GAO YONGTAO (author) / PENG HUIWEN (author) / ZHAO XIAOCHUAN (author)

Publication date :

2022-11-11

Type of media :

Patent

Type of material :

Electronic Resource

Language :

Chinese

Classification :

IPC:

B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung