An intelligent power module
A technology of intelligent power modules and detection modules, which is applied in the direction of output power conversion devices, electrical components, etc., can solve the problems of inability to perform disconnection detection and output peripheral circuits, damage, etc., and achieve the effect of protecting the peripheral circuits of intelligent power modules
Active Publication Date: 2017-03-08
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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Problems solved by technology
[0011] The purpose of the present invention is to provide an intelligent power module, aiming to solve the problem that the existing intelligent power module cannot detect the disconnection when the aluminum wire inside it is disconnected, output a failure prompt signal and perform self-protection to achieve the end of life Protective handling and avoiding damage to peripheral circuits
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[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0041] In the embodiment of the present invention, by adding an upper bridge arm detection module and a lower bridge arm detection module to each single-phase drive circuit in the intelligent power module, the aluminum wires of the upper bridge arm and the aluminum wires of the lower bridge arm are respectively detected in front and rear sections, and The abnormal processing circuit outputs feedback signals to the input control circuit according to the detection level, and finally the input control circuit controls the output states of the input signals of the upper and lower bridge arms of the thre...
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The invention belongs to the field of power drive control, and provides an intelligent power module. An upper bridge arm detection module and a lower bridge arm detection module are additionally arranged in each single-phase drive circuit of the intelligent power module to perform front segment and rear segment detection on an upper bridge arm aluminum wire and a lower bridge arm aluminum wire respectively, and an abnormity processing circuit correspondingly outputs a feedback signal to an input control circuit according to detection level. Finally the output state of upper and lower bridge arm input signals of the three single-phase drive circuits is controlled by the input control circuit according to the feedback signal so that output of the upper and lower bridge arm input signals to the single-phase drive circuits can be interrupted by the input control circuit when the aluminum wires are disconnected and self-protection is realized. Meanwhile, detection level can also be outputted to an external microprocessor of the intelligent power module so that the disconnection position of the aluminum wires can be positioned by a user, end of life protection processing is correspondingly adopted so as to protect the intelligent power module, and thus an objective of protecting peripheral circuits of the intelligent power module is further achieved.
Description
technical field [0001] The invention belongs to the field of power drive control, in particular to an intelligent power module. Background technique [0002] Intelligent Power Module (IPM, Intelligent Power Module) is a power drive product that combines power electronics technology and integrated circuit technology. The intelligent power module integrates the power switching device and the high-voltage driving circuit, and has built-in fault detection circuits such as overvoltage, overcurrent and overheating. On the one hand, the intelligent power module receives the control signal from the MCU and drives the subsequent circuit to work; on the other hand, it feeds back the system status detection signal to the MCU. Compared with traditional discrete solutions, intelligent power modules have won an increasing market due to their advantages of high integration and high reliability. They are especially suitable for inverters and various inverter power supplies for driving moto...
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IPC IPC(8): H02M1/088
Inventor 冯宇翔
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD