Power supply method of storage battery pack for electric scooter and power supply device thereof
A technology for electric mopeds and battery packs, applied in battery circuit devices, electric vehicles, circuit devices, etc., which can solve the problems of lagging voltage of a single battery unit, affecting the service life of the battery pack, and voltage drop of the battery pack, so as to increase the penetration rate , Extended service life, and reduced operating costs
Inactive Publication Date: 2010-09-29
孙守海
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Problems solved by technology
However, when the battery units are used in series, the voltage of a single battery unit will inevitably lag behind, which will reduce the voltage of the battery pack and affect the service life of the battery pack. The service life of the current battery pack is only one year. about
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[0013] The present invention will be further described below in conjunction with the accompanying drawings.
[0014] The power supply method of the battery pack for electric power-assisted vehicles of the present invention comprises the following steps: forming the battery pack from a single battery cell, or connecting a plurality of battery cells in parallel to form the battery pack; converting the first DC voltage output by the battery pack to The second DC voltage is then output to supply power for the electric bicycle.
[0015] According to different types of battery cells, the first DC voltage output by the battery pack can be any voltage value between 2V and 26V. The battery unit can be a lead-acid battery, and the rated output voltage of the lead-acid battery is 12V.
[0016] The output second DC voltage is provided to components of the electric bicycle such as a DC motor controller, an instrument panel, and a headlight, and matches the rated input voltage of these com...
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The invention relates to a power supply method of a storage battery pack for an electric scooter, which comprises the following steps of: forming a storage battery pack by a single storage battery unit or connecting a plurality of storage battery units in parallel to form the storage battery pack; and converting first direct current voltage output by the storage battery pack into second direct current voltage, outputting the second direct current voltage and providing power for the electric scooter. The invention also discloses a power supply device of the electric scooter, which comprises a storage battery pack and a DC-DC (Direct Current-Direct Current) converter, wherein the input end of the DC-DC converter is connected with the output end of the storage battery pack; the storage battery pack comprises a storage battery unit or a plurality of storage battery units which are connected in parallel; the storage battery pack outputs first direct current voltage to the DC-DC converter; and the DC-DC converter converts the first direct current voltage into the second direct current voltage and outputs the second direct current voltage. The storage battery pack of the invention comprises the single storage battery unit or the storage battery units which are connected in parallel; and compared with the storage battery pack formed by connecting a plurality of storage battery units in series, the service life of the storage battery pack is prolonged twice or so.
Description
technical field [0001] The invention relates to a power supply method and a power supply device for a storage battery pack for an electric power-assisted vehicle. Background technique [0002] At present, oil resources are gradually decreasing, which makes the cost of vehicles such as automobiles and motorcycles gradually increase. All countries are looking for new energy sources that can replace gasoline and diesel, such as bio-oil, hydrogen fuel cells, and lead-acid batteries. At present, lead-acid batteries are generally used as the power source to drive electric vehicles, electric motorcycles, electric bicycles, electric tour buses, etc. with DC motors. Among them, electric mopeds (including electric bicycles and electric motorcycles) are equipped with DC motors with a power of 100-500W. In existing electric mopeds, usually 3 or 4 battery units with an output voltage of 12V are connected in series to form a lead-acid battery pack with an output voltage of 36V or 48V, w...
Claims
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Inventor 孙守海
Owner 孙守海