Battery heating circuits and methods based on battery discharging and charging using resonance components in series and multiple charge storage components

摘要

Certain embodiments of the present invention provide a battery heating circuit, comprising a plurality of switch units 1, a switching control module 100, a damping component R1, an energy storage circuit, and a polarity inversion unit 101, wherein: the energy storage circuit is connected with the battery, and comprises a current storage component L1 and a plurality of charge storage components C1; the plurality of charge storage components C1 are connected with the plurality of switch units 1 in series in one-to-one correspondence to form a plurality of branches; the plurality of branches is connected in parallel with each other and then connected with the current storage component L1 and damping component R1 in series; the switching control module 100 is connected with the switch units 1, and is configured to control ON/OFF of the switch units 1.

主权项

1. A circuit for heating a battery, the circuit comprising:
the battery including a first damping component and a first current storage component, the first damping component and the first current storage component being parasitic to the battery; a plurality of switch units; a switching control component coupled to the plurality of switch units; a plurality of charge storage components, the plurality of charge storage components and the first current storage component being at least parts of an energy storage circuit; and a polarity inversion unit coupled to the plurality of charge storage components; wherein:
the plurality of switch units and the plurality of charge storage components are connected in series according to a one-to-one correspondence relationship to form a plurality of branches;the plurality of branches are connected in parallel with each other and connected with the first current storage component and the first damping component in series;the switching control component is configured to turn on and off each of the plurality of switch units, so that one or more currents flow from the battery to the plurality of charge storage components and flow from the plurality of charge storage components to the battery when the switch units switch on; andthe polarity inversion unit is configured to, after the plurality of switch units is turned on and then turned off, invert a plurality of voltage polarities associated with the plurality of charge storage components respectively; wherein the circuit for heating the battery is configured to heat the battery by at least discharging and charging the battery.