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A battery energy efficiency testing device and testing method thereof

A technology of battery energy efficiency and test method, which is applied in measurement devices, measurement of electrical variables, measurement of electricity, etc., can solve the problems of inability to detect battery energy efficiency, inability to obtain open circuit voltage, etc.

Active Publication Date: 2015-08-26
BYD CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that the current electric vehicle and energy storage power station cannot obtain the open circuit voltage during operation, and thus cannot detect the energy efficiency of the battery, the present invention provides a device that can test the energy efficiency of the battery during the operation of the electric vehicle and energy storage power station and its testing method

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  • A battery energy efficiency testing device and testing method thereof
  • A battery energy efficiency testing device and testing method thereof
  • A battery energy efficiency testing device and testing method thereof

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Embodiment Construction

[0031] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] as attached figure 1 As shown, the present invention provides a battery energy efficiency testing device, including a constant current module 1, an acquisition module 2 and a control module 3, the constant current module 1 and the acquisition module 2 are electrically connected to the battery respectively, and the control module 3 is respectively It is electrically connected with the acquisition module 2 and the constant current module 1, the constant current module 1 is used to charge and discharge the battery with a constant current according to the command of t...

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Abstract

The invention provides a battery energy efficiency testing device and a testing method thereof. The testing method comprises the steps of charging and discharging a battery by using a constant current, determining the charging energy and the discharging energy of the battery under a state of charge (SOC) value and calculating the energy efficiency of the battery. Compared with the prior art, the testing method has the advantages that the measurement of an open-circuit voltage of the battery is neglected, and electric vehicles and energy storage power stations can be tested during running processes.

Description

technical field [0001] The invention relates to a battery energy efficiency testing device and a testing method thereof. Background technique [0002] The battery pack is a key component of energy storage power stations and electric vehicles. How to use batteries reasonably and improve the energy efficiency of batteries is a problem that must be solved for the further development of energy storage power stations and electric vehicles. [0003] When the energy efficiency of the battery is measured, it needs to be charged and discharged with a large current. The traditional battery energy measurement method uses the open circuit voltage measurement method. This method needs to measure the open circuit voltage of the battery, but the battery needs to stand for a long time to obtain the open circuit voltage. Energy storage power stations and electric vehicles are often in operation and cannot stand still for a long time, so this method cannot meet the actual use requirements. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/36
Inventor 邓林旺蓝燕英曾宇
Owner BYD CO LTD