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Charging control method and device for electric automobile, and electric automobile

A charging control method and technology for electric vehicles, which are applied in electric vehicle charging technology, battery/fuel cell control devices, electric vehicles, etc., can solve problems such as poor user experience, failure to consider power consumption requirements, and failure of each component to work normally. To achieve the effect of improving user experience

Active Publication Date: 2017-02-01
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a charging control method and device for an electric vehicle, and the electric vehicle, which solves the problem that the electric vehicle does not consider the actual power consumption demand when charging the vehicle battery in the prior art, which causes various components to not work normally and causes users to The problem of poor experience

Method used

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  • Charging control method and device for electric automobile, and electric automobile
  • Charging control method and device for electric automobile, and electric automobile
  • Charging control method and device for electric automobile, and electric automobile

Examples

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Embodiment 1

[0077] Such as figure 1 As shown, an embodiment of the present invention provides a charging control method for an electric vehicle, comprising the following steps:

[0078] Step 101: Obtain the state of charge, SOC and battery temperature of the car battery to determine the charging current required for charging the car battery.

[0079] Wherein, the charging state of the car battery includes: a fast charging state and a slow charging state. The state of charge (SOC, State of Charge) of the car battery is the current charge of the car battery, and it can also be called the remaining power of the car battery. Due to the great influence of temperature on the car battery, for example: low temperature charging will cause permanent damage to the car battery, the phenomenon of lithium precipitation is serious, the crystallization will pierce the diaphragm and cause the internal short circuit of the battery; and the temperature of the car battery is too high may cause fire and othe...

Embodiment 2

[0101] The first embodiment above introduces the charging control method of the present invention, and the following embodiment will further describe the corresponding device in conjunction with the accompanying drawings.

[0102] Such as Figure 4 As shown, the charging control device for an electric vehicle in the embodiment of the present invention includes: .

[0103] The first obtaining module 41 is used to obtain the state of charge of the car battery, the state of charge SOC and the battery temperature, so as to determine the charging current required for charging the car battery;

[0104] The second obtaining module 42 is used to obtain the working state of the power consumption components of the automobile, and determine the working current of all the first power consumption components in the on state, so as to determine the supply current required by the power consumption components of the automobile;

[0105] A processing module 43, configured to determine the tota...

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Abstract

The invention discloses a charging control method and device for an electric automobile, and an electric automobile. The charging control method for the electric automobile comprises the steps that the charging state, the state of charge (SOC) and the battery temperature of an automobile battery are obtained, so that the charging current required for charging the automobile battery is determined; the working states of power consumption assemblies of the automobile are obtained, and the working currents of all the first power consumption assemblies in the operating state are determined, so that the supply current required by the power consumption assemblies of the automobile is determined; the total current demand value is determined according to the charging current and the supply current; and charging of the automobile battery and power supply to the first power consumption assemblies are controlled according to the power supply capacity of a vehicle-mounted battery charger, the current-carrying capacity of a circuit and the total current demand value. According to the charging control method and device for the electric automobile, and the electric automobile, during power supply control, both the charging current of the automobile battery and the power consumption demand of the power consumption assemblies in the operating state are taken into consideration, current output of the battery charger is controlled according to the total power supply demand, it is guaranteed that all the assemblies of the automobile can operate independently without being affected by one another, and user experience is improved.

Description

technical field [0001] The invention relates to the field of new energy vehicles, in particular to a charging control method and device for an electric vehicle and the electric vehicle. Background technique [0002] At present, the battery charging methods of electric vehicles are mainly three-stage charging modes such as constant voltage, constant current and float charging. In the initial stage of charging, due to the long-term discharge of the battery, the battery voltage is low at this time, so the charger must control the charging current of the battery to avoid excessive charging current instantaneously, which will affect the service life of the battery. After charging for a period of time, the battery starts charging in constant voltage mode, and finally the battery is fully charged through floating charging. [0003] The current demand of the car battery when charging is based on the request of the power battery, without considering the user's actual power demand fo...

Claims

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Application Information

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IPC IPC(8): B60L11/18
CPCB60L58/12Y02T10/70Y02T10/7072Y02T90/12Y02T90/16
Inventor 易迪华张龙聪秦兴权
Owner BEIJING ELECTRIC VEHICLE
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