Equalization driving circuit and electronic equipment

Abstract

The embodiment of the invention discloses an equalization driving circuit and electronic equipment. The equalization driving circuit comprises a processor and a plurality of equalization driving circuit units, each equalization drive circuit unit comprises a capacitor, an equalization circuit subunit and a drive circuit subunit. The first end of each capacitor is electrically connected with one output end of the processor, and the second end of each capacitor is electrically connected with the control end of the corresponding equalization circuit subunit; the second end of each capacitor is electrically connected with the input sub-end of the corresponding driving circuit sub-unit, and the output sub-end of the first driving circuit sub-unit is electrically connected with the grounding endof the processor to form a closed loop; and the output sub-end of the Nth drive circuit sub-unit is electrically connected with the previous equalization drive circuit unit so as to be indirectly andelectrically connected with the grounding end of the processor to form a closed loop. According to the embodiment of the invention, the equalization driving circuit is simplified, equalization of allbatteries is realized, the cost is reduced, and the reliability is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of circuits, and in particular to an equalization drive circuit and electronic equipment. Background technique [0002] With the advancement of science and technology, lithium batteries are more and more widely used in various industries. For electric tools, the Internet of Things, and drones, where 6 or less lithium batteries are used in series, it is necessary to balance a single battery to prolong its service life. [0003] In the series application of lithium batteries with 6 cells or less, in order to reduce power consumption and cost of the product, a non-isolated power supply solution is adopted, that is, the ground terminal of the Micro Control Unit (MCU) shares the ground with the negative electrode of the first cell; however, due to non-isolated Isolation and common ground cause the MCU to drive the battery to passively balance the MOS tubes. The MCU cannot directly conduc...

AI Technical Summary

Problems solved by technology

[0003] In the series application of lithium batteries with 6 cells or less, in order to reduce power consumption and cost of the product, a non-isolated power supply solution is adopted, that is, the ground terminal of the Micro Control Unit (MCU) shares the ground with the negative electrode of the first cell; however, due to non-isolated Isolation and common ground cause the MCU to drive the battery to passively balance the MOS tubes. The MCU cannot directly conduct the equalization MOS tubes in Sections 2-6. It can only be controlled by the isolated optocoupler method. However, the isolated optocoupler method will simultaneously conduct the second The circuit of section 1-section 6 cannot achieve the balance of the circuit of section 2-section 6, and the circuit is cumbersome, with high cost and low reliability

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