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Residual energy evaluation method and system for battery

A technology of remaining energy and battery capacity, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., can solve the problem of no battery remaining energy estimation method, etc.

Active Publication Date: 2017-05-17
CHONGQING CHANGAN AUTOMOBILE CO LTD
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Problems solved by technology

[0003] In view of this, the present invention provides a method and system for estimating the remaining battery energy to solve the problem that there is no method for estimating the remaining battery energy

Method used

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  • Residual energy evaluation method and system for battery
  • Residual energy evaluation method and system for battery

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Embodiment Construction

[0079] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0080] The invention provides a method for estimating the remaining energy of a battery, referring to figure 1 . The methods include:

[0081] S11. Obtain the current, total voltage, cell voltage and cell temperature of the battery;

[0082] Specifically, a current sensor may be used to detect the current, a voltage sensor may be used to detect the total voltage and a cell voltage, and a temperature sensor may be used to measure the temperature of the cell. ...

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Abstract

The invention provides a residual energy evaluation method and system for a battery, and the method comprises the steps: obtaining the current, total voltage, cell voltage and cell temperature of the battery; calculating and obtaining the service life information of the battery through the current, total voltage, cell voltage and cell temperature of the battery; querying first residual energy corresponding to the current, the total voltage, the cell voltage, the cell temperature and the service life information according to a residual energy parameter table. The residual energy of the battery can be estimated through the above method, and a problem that there is no method for estimating the residual energy of the battery is solved.

Description

technical field [0001] The invention relates to the field of new energy vehicle control, and more specifically, to a method and system for estimating the remaining energy of a battery. Background technique [0002] At present, new energy vehicles developed on the market need to consider the remaining energy of the power battery. Knowing the remaining energy of the battery can better estimate the remaining mileage of the vehicle, improve the performance of the vehicle, and at the same time better maintain the battery. battery life. Therefore, correctly estimating the remaining energy of the battery plays an important role in the management of the car battery. However, there is currently no method for estimating the remaining energy of the battery. Therefore, there is an urgent need for a method for estimating the remaining energy of the battery. Contents of the invention [0003] In view of this, the present invention provides a method and system for estimating the remai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCG01R31/3648G01R31/392
Inventor 赵天林李连兴郑英张后亮袁昌荣姚振辉杨辉前
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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