Battery module performance detecting method for electric car

A battery module, electric vehicle technology, applied in the electrical field, can solve the problem of long time spent, and achieve the effect of improving the detection speed

Active Publication Date: 2013-12-18
天津中科先进技术产业有限公司
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AI Technical Summary

Problems solved by technology

[0006] The above method needs to completely discharge the battery module of the electric vehicle, and then fully charge the battery according to the nominal charging method provided by the manufacturer, and the nominal charging method provided by the manufacturer is generally a relatively small current, so this method takes time longer

Method used

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  • Battery module performance detecting method for electric car
  • Battery module performance detecting method for electric car
  • Battery module performance detecting method for electric car

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Embodiment Construction

[0036] Such as figure 1 As shown, in one embodiment, a battery module performance detection method of an electric vehicle comprises the following steps:

[0037] Step S102 , keeping the electric vehicle running on a slope, so as to keep the battery module of the electric vehicle discharged at a preset discharge rate, and the preset discharge rate is greater than or equal to 1C.

[0038] Specifically, the preset discharge rate may be preset to a fixed value greater than or equal to 1C. Preferably, if the standard discharge rate of the battery module specified by the manufacturer of the battery module is greater than or equal to 1C, the preset discharge rate can be set to the standard discharge rate.

[0039] In one embodiment, the electric vehicle can be started on a certain slope, and the electric vehicle can be accelerated gradually, the discharge rate of the battery module can be monitored, and when the discharge rate reaches the preset discharge rate, the electric vehicle ...

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Abstract

A battery module performance detecting method for an electric car comprises the following steps of keeping the electric car to run on a slope, keeping a battery module of the electric car to discharge at a preset discharge rate which is larger than or equal to 1C, measuring the average voltage difference of a single battery in the battery module in a preset period, and setting the battery module performance as the specific value between the average voltage difference and the standard voltage difference of a standard battery module with the same type specification as the battery module. The battery module performance detecting method can guarantee the battery module to discharge at the preset discharge rate, can measure the average voltage difference of the single battery in the battery module in the preset period and can balance the performance of the battery module according to the average voltage difference of the single battery. Thus, the method can quickly detect the performance of the battery module.

Description

【Technical field】 [0001] The invention relates to the field of electricity, in particular to a method for detecting the performance of a battery module of an electric vehicle. 【Background technique】 [0002] With the increasingly prominent energy and environmental issues, the relatively energy-saving and environmentally friendly electric vehicle industry has developed rapidly. The power battery of electric vehicles is an important part of electric vehicles, which directly affects various performance indicators of electric vehicles, such as cruising range and service life. Therefore, it is extremely important to test the performance of the electric vehicle power battery. [0003] The battery module performance of an electric vehicle can also be said to be the state of health (SOH) of the battery module of an electric vehicle. At present, the current maximum chargeable capacity of the battery module of the electric vehicle is generally used as the evaluation index of the bat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 王大龙吴正斌朱红磊
Owner 天津中科先进技术产业有限公司
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