Vehicle-mounted high-integration hybrid power supply, energy management and control system and method thereof

Abstract

The invention discloses a vehicle-mounted high-integration hybrid power supply, an energy management and control system and a method thereof. The vehicle-mounted high-integration hybrid power supply comprises an accumulator, an inductor, a super capacitor, a conventional capacitor and a NPC three-level inverter; the inductor is serially connected with the accumulator to form a first branch, and apositive electrode of the accumulator is connected to a DC bus through the inductor; the super capacitor and the conventional capacitor are serially connected to form a second branch which is connected with the first branch in parallel; the NPC three-level inverter is connected with the second branch in parallel; the NPC three-level inverter comprises a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a first diode and a second diode. The super capacitor is completely integrated in a DC bus of the NPC three-level inverter, the accumulator and the super capacitor are coupled through the NPC three-level inverter, thereby realizing the decoupling of the DC bus voltage VDC and the capacitors (including super capacitor and the conventional capacitor) energy decomposition EDC.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a vehicle-mounted highly integrated hybrid power supply and an energy management control method thereof. Background technique [0002] At present, batteries such as lead-acid batteries, lithium-ion batteries, and sodium-based batteries are generally used as energy storage power sources in hybrid vehicles and electric vehicles. Although batteries have advantages in terms of energy density, their power density is low and cannot meet the high power demand of loads during the operation of electric vehicles. Although energy storage power sources such as flywheels, superconductors, and supercapacitors have high power density characteristics and can provide large power in a short period of time, they have low energy density and cannot be continuously charged and discharged. It can be seen that a single energy storage power supply cannot meet the application requirements of energy and...

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Problems solved by technology

[0004] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a vehicle-mounted highly integrated hybrid power supply, energy management and control system and its method, which effectively solves the technical problems of the existing hybrid power supply management and control system such as complexity and high cost

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