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Electric quantity metering module group and method for battery, and electric car

A power metering and battery technology, applied in the field of electric vehicles, can solve problems such as inaccurate power statistics, increased internal resistance, and performance degradation, and achieve the effect of accurate power values

Inactive Publication Date: 2016-03-23
上海天奕无线信息科技有限公司
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Problems solved by technology

In actual use, because the voltage will change with the change of the load (that is, the acceleration, deceleration, uphill and downhill changes of the electric vehicle), resulting in a large difference in the voltage of the vehicle when it is driving and in a stationary state, the accuracy of power statistics not tall
The lead-acid battery or lithium battery commonly used in electric vehicles, with the in

Method used

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  • Electric quantity metering module group and method for battery, and electric car
  • Electric quantity metering module group and method for battery, and electric car

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Embodiment Construction

[0014] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0015] The first embodiment of the present invention relates to a battery power metering method. Its process is as follows figure 1 As shown, the details are as follows:

[0016] Step 101, preset the initial power value of the battery.

[0017] Specifically speaking, generally in the initial state of the battery, there wi...

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Abstract

The invention relates to the field of batteries, and discloses an electric quantity metering module group and method for a battery, and an electric car. The method comprises the following steps: collecting the instantaneous voltage and current values of the battery; calculating the instantaneous charging and discharging electric energy of the battery through the collected instantaneous voltage and current values; accumulating the instantaneous charging electric energy and the instantaneous discharging electric energy, and obtaining the residual electric quantity of the battery. The method calculates the residual electric quantity of the battery through the real-time monitoring of the instantaneous voltage and current values of the battery, thereby achieving the accurate estimation of the remaining service time of the battery.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a power metering module of the battery, a power metering method thereof, and an electric vehicle. Background technique [0002] The existing electricity storage energy statistics of electric vehicles are all simulated through battery voltage and battery charge and discharge curves. In actual use, because the voltage will change with the change of the load (that is, the acceleration, deceleration, uphill and downhill changes of the electric vehicle), resulting in a large difference in the voltage of the vehicle when it is driving and in a stationary state, the accuracy of power statistics not tall. The lead-acid battery or lithium battery commonly used in electric vehicles, as the battery charge and discharge cycle increases, the internal resistance will gradually increase, the performance will gradually decrease, and the charge and discharge curve will change significantly, resulting in...

Claims

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Application Information

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IPC IPC(8): G01R31/36
CPCG01R31/3842
Inventor 张俊李恺晔谢杨
Owner 上海天奕无线信息科技有限公司
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