Double-battery parallel control device with feedback function

Abstract

A double-battery parallel control device with a feedback function can realize parallel connection of batteries and energy feedback of a load and comprises a battery control board and a switch control module arranged on the battery control board, wherein the input end of the switch control module is connected with a battery module, and the output end of the switch control module is connected with the load through a controller; the input end of the battery module is connected with a charger; the battery module comprises at least two groups of batteries which are connected in parallel; the switch control module comprises switches, the switches are respectively connected between the batteries and the controller in series, each switch is respectively connected with a diode in parallel, and the switches realize switching control through the switch control device.

Description

technical field [0001] The invention relates to the technical field of battery power supply control, in particular to a battery parallel control device with a feedback function. Background technique [0002] General electric equipment has its own proprietary battery pack as a power supply. When the battery energy is exhausted, the battery needs to be recharged or replaced with a battery pack of the same specification. In order to use electric tools for a long time or extend the mileage of electric vehicles , you can use other spare battery packs to power the device. When using a spare battery pack, you need to remove or disconnect the original battery pack. You cannot directly use two battery packs in parallel, otherwise the multiple battery packs will have high voltage due to different voltages. A low voltage battery pack will be charged. Since the internal resistance of the battery itself is very small, it will cause a large charging current, thereby shortening the batter...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the battery parallel connection method in the prior art is generally only applicable to pure consumption loads, if the load has energy feedback, the feedback energy cannot be stored in the battery, which may easily lead to an increase in the bus voltage of the controller and damage to the equipment. The present invention provides A battery parallel control device with feedback function is proposed, which can not only realize the parallel connection of the battery, but also realize the energy feedback of the load

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