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Power battery power test method and system

A power battery and power testing technology, which is applied in the direction of measuring electric power, electric vehicles, electrical devices, etc., can solve the problems of large amount of data calculation, inability to reflect the demand of power battery, complexity, etc.

Active Publication Date: 2015-02-25
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology

[0010] Using steps (1) to (5) to test the power of the power battery requires a large amount of data calculation, which is relatively complicated, and because the condition of the whole vehicle is very complicated, the power test method of the power battery measures the pulse power capability of the power battery. It cannot reflect the power battery demand of the whole vehicle in the actual state

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  • Power battery power test method and system

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Embodiment Construction

[0058] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0059] Such as figure 1 As shown, the power test method of the power battery includes:

[0060] Step 101: Place the fully charged power battery in a test environment at a preset temperature for a first preset time, so that the temperature of the power battery is stable at the preset temperature.

[0061] The above-mentioned test environment can be a high-low temperature box, specifically, the temperature in the high-low temperature box can be adjusted to the required test temperature according to actual needs, and the standing time (the first preset time) is set in advance, such as 1 hour, wherein , when the power battery is placed in the test environment for a first preset time, it can reach a steady state.

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Abstract

The invention discloses a power battery power test method and system and belongs to the technical field of power batteries. The method includes statically placing a 100% charged power battery in a testing environment at the preset temperature for a first preset time, and allowing the temperature of the power battery to stabilize at the preset temperature; adopting the preset discharging rate to discharge the 100% charged power battery till a preset charge state; acquiring a discharging power according to the calibrated parameters of a motor, adopting the discharging power to discharge with the constant power, when the discharging time passes till a second preset time, testing a first voltage of the power battery; if the first voltage is equal to a minimum discharging voltage, allowing the discharging power serve as the discharging power of the power battery in the preset charge state. By the aid of the method, the actual maximum pulse power of a vehicle can be tested conveniently, and basis is provided for vehicle start and acceleration performance prediction and the selection of power battery meeting the vehicle power requirements.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to a method and system for testing power of a power battery. Background technique [0002] As a key component of electric vehicles, power batteries are the fundamental source of power for electric vehicles. The power performance of the power battery is related to the starting and acceleration characteristics of the vehicle, and is an important parameter of the vehicle. Therefore, it is necessary to test the power performance of the power battery. [0003] In the prior art, the constant current pulse charge and discharge method is usually used to test the power of the power battery. The specific test process is as follows: [0004] (1) Discharge the fully charged power battery to a certain state of charge (usually SOC90%) with the set discharge rate, and then let it stand for a certain period of time. After the state of the power battery is stable, record the open circuit vo...

Claims

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Application Information

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IPC IPC(8): G01R21/00
Inventor 雷婷夏顺礼赵久志秦李伟徐爱琴
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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