Series-parallel connection converter

Abstract

The invention relates to a series-parallel connection converter, and belongs to the field of electrotechnics. The series-parallel connection converter is characterized in that the series-parallel connection converter corresponds to n single batteries E1, E2, ..., and En in battery packs, only a single n-pole double-throw switch K and n diodes D1, D2, ... and Dn are required by the series-parallel connection converter, and the n diodes D1, D2, ..., Dn are only used in a charge circuit; anodes of the diodes are respectively connected with cathodes of the single batteries and are respectively connected with normally open contacts in the n-pole double-throw switch; cathodes of the diodes are connected with one another in parallel and are further connected with a normally closed contact An of K_n in the n-pole double-throw switch, and normally closed contacts A1-An-1 of K_1-K_n-1 in the n-pole double-throw switch are connected with one another in parallel, are further connected with the anode of the single battery E1 and are led out by wires to be used as an anode port +In&Out for being connected with external equipment; the anodes of the single batteries E2-En are respectively connected with pole electrodes K_1-K-n-1 in the n-pole double-throw switch, and a pole electrode K_n in the n-pole double-throw switch is led out by a wire to be used as a cathode port -In&Out for being connected with the external equipment. The series-parallel connection converter has the advantages of few components, simplicity in manufacture and high cost performance.

Description

technical field [0001] The invention relates to a series-parallel converter, which belongs to the field of electrotechnical technology. Background technique [0002] Due to the rapid development of new energy technology and the continuous progress of material science, various rechargeable batteries are replacing disposable batteries in more and more fields, and gradually become the preferred energy source for power supply on the move. The voltage required by the load (electrical appliance) is often higher than the output voltage of a single battery, so it is necessary to connect n battery cells in series to provide an appropriate voltage output. For reasons such as short life, these battery packs have basically been charged in series so far. [0003] The drawbacks of series charging battery packs are obvious. Since the material, size and chemical reaction inside each battery cannot be guaranteed to be consistent, the terminal voltage of each battery cell after discharge ha...

AI Technical Summary

Problems solved by technology

These circuits belong to the automatic control type, and all use electronic components to implement monitoring and conversion. They are characterized by fast conversion speed, but their charging and discharging currents flow through the electronic components, which will inevitably cause large power heat loss.

Due to the high price of high-power electronic components, high energy consumption, short service life of continuous use, and high cost compared with battery packs and chargers, it is difficult to promote such products in the civilian field.

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