阅读说明：本技术 增程式电动汽车无高压状态下为整车提供用电的方法 (Method for providing electricity for whole vehicle in range-extended electric vehicle non-high-voltage state ) 是由 兰悦鹏 赵春明 李磊 周能辉 于 2020-12-23 设计创作，主要内容包括：本发明公开了一种增程式电动汽车无高压状态下为整车提供用电的方法,针对增程式电动汽车在车辆无高压的情况下,通过安装增加启动电机,由蓄电池给启动电机供电,通过启动电机拖动发动机工作来控制增程器系统工作,为整车提供基本用电需求及保证驾驶安全。车辆处于低温或高温工况下,电池温度过低或过高使得电池放电能力下降或是电池处于故障状态导致的车辆无法上高压,启动电机拖动发动机工作控制增程器系统工作,整车控制器通过采集整车用电需求进行计算,并根据计算结果控制增程器系统处于不同功率工作以满足电池包加热或制冷及车辆安全行驶需求。本发明可以满足使用者在不同环境下车辆的正常工作。(The invention discloses a method for providing power for a whole range-extended electric automobile in a high-voltage-free state, aiming at the condition that the range-extended electric automobile has no high voltage, a starting motor is additionally arranged, a storage battery supplies power for the starting motor, and the starting motor drags an engine to work to control a range extender system to work, so that basic power demand is provided for the whole automobile and driving safety is ensured. The vehicle is under low temperature or high temperature operating mode, and battery temperature is crossed low or too high and is made the battery discharge capacity decline or the battery be in the unable high pressure of vehicle that the fault state leads to, and the starter motor drags engine work control range extender system work, and vehicle control unit calculates through gathering whole car power consumption demand to according to the operation result control range extender system is in different power work in order to satisfy battery package heating or refrigeration and vehicle safety driving demand. The invention can meet the requirement of normal work of the vehicle under different environments.)

1. A method for providing power for a whole vehicle in a high-voltage-free state of an extended range electric vehicle is characterized in that a starting motor is additionally arranged in the vehicle under the condition that the vehicle is not high-voltage, a storage battery supplies power for the starting motor, a vehicle engine is dragged by the starting motor to work to control a range extender system to work, a whole vehicle controller calculates by collecting the power consumption requirement of the whole vehicle, and controls the range extender system to work at different powers according to a calculation result, so that the basic power consumption requirement is provided for the whole vehicle, and the driving safety is guaranteed.

2. The method for providing power for the whole vehicle according to claim 1, wherein when the vehicle is in a low-temperature working condition, the battery temperature is too low, so that the discharge capacity of the battery is reduced, and the vehicle cannot be charged with high voltage, a motor is started to drive a vehicle engine to work, and a range extender system is controlled to provide energy for a thermal management system, so that the heating requirement of a battery pack is met.

3. The method for providing power for the whole vehicle according to claim 1, wherein when the vehicle is in a high-temperature working condition, the battery discharge capacity is reduced due to the fact that the battery is too high in temperature, the vehicle cannot be charged with high voltage, and the starting motor drives a vehicle engine to work, so that a range extender system is controlled to provide energy for a thermal management system, and the cooling requirement of a battery pack is met.

4. The method for providing power for the whole vehicle according to claim 1, wherein the battery is in a fault state, so that the vehicle cannot be charged with high voltage, and the starting motor drags a vehicle engine work controller system to provide energy for a driving system, so as to meet the requirement of safe driving of the vehicle.

Technical Field

The invention relates to a method for normally driving a vehicle of an extended range type electric vehicle in different environments, in particular to a method for providing basic power demand for the whole vehicle in a non-high voltage state.

Background

With the attention of people on environmental pollution, the new energy market gradually rises with the advantages of less pollution, energy conservation and the like; some disadvantages of new energy vehicles are also gradually appearing, such as: charging is difficult, charging time is long, driving range is short, and the like. At the moment, the extended-range automobile not only meets the requirement of small pollution of the automobile, but also solves the problems of short driving range and the like of the electric automobile, and the electric automobile gradually enters the visual field of a user. The range-extended electric automobile can meet the pure electric driving requirement of a customer in the short-distance driving process, can meet the long-distance driving requirement of the customer through a range-extended mode, and is gradually approved by the customer. Due to the influence of temperature and battery faults, the operation capacity of the extended range type electric automobile under the condition of no high voltage is limited, and the basic power utilization requirement for the whole automobile is provided under the condition of no high voltage of the extended range type electric automobile.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, namely, the vehicle needs to drive the engine to start through the generator under the condition of high pressure so as to control the working of a range extender system; the method for providing power for the whole vehicle in the range-extended electric vehicle in the non-high-voltage state is provided, and normal work of the vehicle in different environments of a user is met.

In order to solve the technical problems, the invention provides a method for supplying power to a whole vehicle in a high-voltage-free state of an extended range electric vehicle.

Further, the invention relates to a method for providing electricity for a whole vehicle, wherein the method comprises the following steps:

the vehicle is under the low temperature operating mode, and battery temperature is crossed low and is made the battery discharge capacity decline and lead to the vehicle can't go up high pressure, and the starter motor drags engine work control range extender system to provide energy for thermal management system to satisfy battery package heating demand.

Under the high temperature operating mode of vehicle, battery temperature is too high to make battery discharge capacity descend and lead to the vehicle can't go up high pressure, and the starter motor drags engine work control range extender system to provide energy for thermal management system to satisfy battery package refrigeration demand.

When the battery is in a fault state, the vehicle cannot be charged with high voltage, and the starting motor drives the engine to work and control the range extender system to provide energy for the driving system, so that the requirement of safe running of the vehicle is met.

Compared with the prior art, the invention has the beneficial effects that:

under the working condition of low temperature, high temperature or the battery is in the fault state, the vehicle can not satisfy the requirement of high voltage. A starter generator is additionally arranged on a vehicle, a storage battery supplies power to the starter motor, the starter motor drives the engine to start so as to control the range extender system to work, the vehicle controller calculates by collecting the power consumption requirement of the vehicle, and controls the range extender system to work at different powers according to the calculation result so as to meet the power consumption requirement of the vehicle.

Drawings

FIG. 1 is a block diagram of a method for providing electricity for a vehicle according to the present invention.

Detailed Description

The invention will be further described with reference to the following figures and specific examples, which are not intended to limit the invention in any way.

In an embodiment, a starter motor is mounted on a vehicle and is connected with a flywheel of a vehicle engine. The method for providing power for the whole vehicle in the range-extended electric vehicle without high voltage, disclosed by the invention, comprises the following steps as shown in figure 1:

the starting motor is powered by the storage battery, the vehicle engine is dragged to start, and the vehicle engine is controlled to start after the starting condition of the engine is met; the vehicle controller calculates the power consumption of the whole vehicle according to the power consumption requirements of a heat management system (such as heating and cooling requirements of a passenger compartment and heating and cooling requirements of a battery) of the whole vehicle and a driving system (such as driving requirements) of the whole vehicle; and the vehicle control unit controls the engine and the range extender system to work according to the calculated power demand of the vehicle power demand to meet the power demand of the vehicle.

In practical applications, the following are included:

(1) the driver is in the vehicle without high pressure, such as: the vehicle is in the low temperature operating mode, and the battery discharge capacity is relatively poor, and the vehicle can't satisfy high-voltage demand, and the vehicle can't satisfy passenger cabin demand and driving demand this moment, controls the work of increase journey ware system through the method that the starter motor dragged the generator, and the control increases journey ware system and carries out work according to whole car power consumption under this operating mode that vehicle control unit calculated to provide basic power consumption demand for whole car.

(2) The driver is in the vehicle without high pressure, such as: under the high-temperature working condition, the discharging capacity of a battery is poor, the vehicle cannot meet the requirement of high voltage, and the range extender system is controlled to work by starting a motor to drive a generator, so that the basic power utilization requirement is provided for the whole vehicle.

(3) The driver is in the vehicle without high pressure, such as: when the battery is in a fault state, the vehicle cannot meet the high-voltage requirement, at the moment, the vehicle cannot meet the requirement of a passenger cabin and the driving requirement, and the range extender system can be controlled to work by a method of starting the motor to drag the generator, so that the basic power demand is provided for the whole vehicle, the driving safety is ensured, and the vehicle can limp home.

While the present invention has been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are illustrative only and not restrictive, and various modifications which do not depart from the spirit of the present invention and which are intended to be covered by the claims of the present invention may be made by those skilled in the art.