Battery residual capacity output time assessment device and electric vehicle

A technology of remaining battery power and evaluating device, which is applied to measuring devices, measuring electrical variables, measuring electricity, etc., can solve the problems of not being able to accurately display whether the remaining power can reach the destination, and the difficulty of estimating the driving distance of electric vehicles, so as to save Calculation link, avoid inconvenience, the effect of accurate numerical value

Inactive Publication Date: 2017-03-29
杭州衡源汽车科技有限公司
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Problems solved by technology

[0005] In view of the difficulty in estimating the driving distance of an electric vehicle in actual use, and the fact that it is impossible to accurately display whether the remaining power can reach the destination, the first purpose of the present invention is to provide an evaluation device for the output time of the remaining battery power, and the second purpose is to provide a device that can display The electric vehicle with the required electricity to reach the destination, the specific plan is as follows:

Method used

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  • Battery residual capacity output time assessment device and electric vehicle
  • Battery residual capacity output time assessment device and electric vehicle

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Embodiment Construction

[0049] In the prior art, the detection of electric vehicle battery power is often achieved by using the battery’s charge and discharge curves. By testing the voltage and current at the output end of the battery, the remaining power of the battery and the battery’s ability to last under this discharge condition can be theoretically obtained. output time. However, since the movement of chemical reaction ions in the battery is closely related to the temperature, when the temperature is too high, the discharge rate of the battery will increase significantly, so the battery voltage measured under a certain temperature condition does not reflect the real remaining capacity of the battery. Therefore, the electric vehicle driver often misjudges the battery power of the electric vehicle, which brings inconvenience to the electric vehicle driver.

[0050] The present invention will be further described in detail below with reference to the examples and figures, but the embodiments of th...

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Abstract

The invention discloses a battery residual capacity output time assessment device and an electric vehicle. The battery residual capacity output time assessment device comprises an electric quantity detection module, a control assembly, a temperature detection module, a discharge rate detection module and a storage module, and is used for calculating effective and continuous output time of a battery under the conditions of different residual electric quantities, different temperature and different discharge rates. The electric vehicle adopts the battery residual capacity output time assessment device above; the distance between the electric vehicle and the destination as well as expected driving distance of the electric vehicle can be calculated through a GIS system; and when the electric quantity of the electric vehicle cannot meet the electric quantity demand of the distance above, an alarm signal is sent to prevent the case that the battery runs out in the electric vehicle driving process.

Description

technical field [0001] The invention relates to the field of electric vehicle and battery management technology, more specifically, it relates to a battery remaining power output time evaluation device and an electric vehicle. Background technique [0002] With the enhancement of people's awareness of environmental protection, new energy vehicles are more and more popular. Among them, electric vehicles have attracted a large number of consumers with their convenient and green concept. [0003] However, electric vehicles still have some disadvantages compared with fossil energy vehicles, such as battery life. When the driver drives the above-mentioned electric car to a distant destination, he cannot clearly know whether he can reach the destination with the power of the battery, which may cause the driver to run out of power in the electric car while driving. Bring a lot of inconvenience to the driver. [0004] In order to make it easier for the driver to understand the re...

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Application Information

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IPC IPC(8): G01R31/36
CPCG01R31/382
Inventor 王祖光钟巍
Owner 杭州衡源汽车科技有限公司
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