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Test method of whole automotive electric balance

A test method and electric balance technology, which is applied in the test field of electric balance of automobiles, can solve problems such as reduced life of automobile electrical systems, unstable power supply systems, and cost of faulty automobile power supply systems, and achieves operability and simple test methods practical effect

Active Publication Date: 2011-05-25
CHERY AUTOMOBILE CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] In the prior art, the configuration of the automotive power supply system mostly relies on estimation, and there is no standardized test method for verification, resulting in excessive redundancy or insufficient capacity of the automotive or power supply system, making the power supply system unstable, resulting in reduced life of the automotive electrical system and various Electrical failures may greatly increase the cost of automotive power systems

Method used

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  • Test method of whole automotive electric balance
  • Test method of whole automotive electric balance
  • Test method of whole automotive electric balance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] Use data collectors and current sensors to measure the voltage and current of car batteries, generators and car electrical appliances, and use battery testers to measure battery power.

[0036] 1. Dynamic electric balance test

[0037] Before the test, discharge the battery power to 50% of the rated capacity, and leave the car in a running state. Test for 4 hours to 5 hours, and test whether the vehicle is in dynamic electrical balance through the change in battery power before and after the test or the battery charge and discharge current ratio.

[0038] First measure the battery capacity for 20 hours: remove the battery of the sample car, charge it at 16V constant voltage for 12h on a general battery tester, then charge at 4A constant current for 1h, then discharge it to 10.5V at 20hr current, measure the battery for 20 hours Rate capacity. Then carry out quantitative charging: first fully charge the battery, and then discharge to 50% of the rated capacity of the battery at...

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Abstract

The invention relates to a test method of a whole automotive electric balance. The test method comprises the following steps of: measuring voltages and currents of an automotive storage battery, a power generator and automotive electrical components by using a data acquisition unit and a current sensor; measuring an electricity quantity of the storage battery by using a storage battery tester; during dynamic electric balance test, discharging the electricity of the storage battery until the electricity quantity is 50 percent of a rated capacity before the test to make the automobile in a running state, testing for 4 to 5 hours, and testing whether the whole automobile is in the dynamic electric balance according to the variation of the electricity quantity of the storage battery before and after the test or an average current ratio of a charging current to a discharging current of the storage battery; during static electric balance test, measuring a static current, a lowest starting capacity, a general available capacity and a self-discharging current of the storage battery, and obtaining a static parking time period of the automobile by calculation so as to realize the test of the static electric balance.

Description

Technical field [0001] The invention relates to a test method for the electric balance of an automobile. Background technique [0002] The generator is the power source of the car circuit, the battery is the energy storage device, and the on-board electrical appliance is the load. Due to the different working conditions of the car, the engine speed changes all the time, making the generator's power generation capacity constantly change. At the same time, because the car electrical appliances are used in different states, the total current consumed is also different, making the electrical load also different . The battery is an energy storage mechanism. When the generator's generating capacity cannot meet the needs of the consumer, it is discharged to provide the load for use. When the generator's generating capacity exceeds the needs of the consumer, the generator supplements the battery to charge, so that the generator, battery It forms a dynamic balance with electrical applia...

Claims

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Application Information

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IPC IPC(8): G01R31/36
Inventor 陆云峰吴凤英阳轩铎范成慧
Owner CHERY AUTOMOBILE CO LTD
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