Semiconductor power module and drive system for electric motor
First Claim
1. A semiconductor power module configured to drive an electric motor, the semiconductor power module comprising:
- a temperature signal generation unit configured to detect a temperature in the semiconductor power module, generate a signal indicating the detected temperature, and output the signal;
an identification information storage unit configured to preliminarily store identification information for identifying the semiconductor power module, and output an identification signal indicating the identification information;
a switching unit configured to select one of the signal output from the temperature signal generation unit and the identification signal output from the identification information storage unit, and output the selected signal outside of the semiconductor power module;
a fault output signal generation unit configured to generate a fault output signal indicating whether or not the semiconductor power module is abnormal, and output the fault output signal to the outside of the semiconductor power module; and
a rising edge detection unit configured to detect that the fault output signal output from the fault output signal generation unit is switched from a status indicating that the semiconductor power module is abnormal to a status indicating that the semiconductor power module is normal,wherein the switching unit selects the identification signal during a predetermined period after the semiconductor power module is restored to a normal operational state,wherein the rising edge detection unit outputs, to the switching unit, an indication signal indicating selection of the identification signal during a predetermined period after the detection that the fault output signal is switched from the status indicating that the semiconductor power module is abnormal to the status indicating that the semiconductor power module is normal, andwherein the switching unit selects the identification signal during a period in which the indication signal is output from the rising edge detection unit, the period being set as a predetermined period after the semiconductor power module is restored to the normal operational state.
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Accused Products
Abstract
Erroneous mounting of a semiconductor power module can be more easily detected. A semiconductor power module (9) according to the present invention includes: a status signal generation unit (90) configured to detect a status in the semiconductor power module (9) and generate and output a status signal indicating the detected status; an identification information storage unit (91) configured to preliminarily store identification information for identifying the semiconductor power module (9) and output an identification signal indicating the identification information; and a switching unit (92) configured to select one of the status signal output from the status signal generation unit (90) and the identification signal output from the identification information storage unit (91) and output the selected signal to an outside of the semiconductor power module (9).
41 Citations
8 Claims
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1. A semiconductor power module configured to drive an electric motor, the semiconductor power module comprising:
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a temperature signal generation unit configured to detect a temperature in the semiconductor power module, generate a signal indicating the detected temperature, and output the signal; an identification information storage unit configured to preliminarily store identification information for identifying the semiconductor power module, and output an identification signal indicating the identification information; a switching unit configured to select one of the signal output from the temperature signal generation unit and the identification signal output from the identification information storage unit, and output the selected signal outside of the semiconductor power module; a fault output signal generation unit configured to generate a fault output signal indicating whether or not the semiconductor power module is abnormal, and output the fault output signal to the outside of the semiconductor power module; and a rising edge detection unit configured to detect that the fault output signal output from the fault output signal generation unit is switched from a status indicating that the semiconductor power module is abnormal to a status indicating that the semiconductor power module is normal, wherein the switching unit selects the identification signal during a predetermined period after the semiconductor power module is restored to a normal operational state, wherein the rising edge detection unit outputs, to the switching unit, an indication signal indicating selection of the identification signal during a predetermined period after the detection that the fault output signal is switched from the status indicating that the semiconductor power module is abnormal to the status indicating that the semiconductor power module is normal, and wherein the switching unit selects the identification signal during a period in which the indication signal is output from the rising edge detection unit, the period being set as a predetermined period after the semiconductor power module is restored to the normal operational state. - View Dependent Claims (2, 3, 4)
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5. A semiconductor power module comprising:
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a power element; and a control unit configured to control an operation of the power element, wherein the control unit includes; a detection terminal; a temperature signal generation unit configured to detect a temperature in the semiconductor power module and output a signal indicating the detected temperature; an identification information storage unit configured to store identification information and output an identification signal indicating the identification information; and a switching unit configured to select one of the signal and the identification signal and output the selected signal to an outside of the semiconductor power module via the detection terminal wherein the detection terminal is a first detection terminal, the control unit further includes; a second detection terminal; and a fault detection unit configured to output a fault detection signal outside via the second detection terminal, the fault detection signal indicating a fault state of the semiconductor power module, and the switching unit selects the identification signal according to a change of the fault detection signal and outputs the identification signal to the outside of the semiconductor power module via the first detection terminal, and then selects the signal indicating the detected temperature and outputs the signal indicating the detected temperature to the outside of the semiconductor power module via the first detection terminal. - View Dependent Claims (6, 7)
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8. A drive system for an electric motor, comprising:
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a semiconductor power module including a power element and a control unit configured to control the power element; and a power module control unit configured to control the semiconductor power module, wherein the control unit includes; first and second detection terminals; a fault detection unit configured to output a fault detection signal to the power module control unit via the first detection terminal, the fault detection signal indicating a fault state of the semiconductor power module; a temperature signal generation unit configured to detect a temperature in the semiconductor power module and output a signal indicating the detected temperature via the second detection terminal; and an identification information storage unit configured to store identification information and output an identification signal indicating the identification information; and a switching unit configured to select one of the signal indicating the temperature and the identification signal according to the fault detection signal, and supply the selected signal to the power module control unit via the second detection terminal, and during a predetermined period after the fault detection signal detects that the semiconductor power module is in a normal state, the power module control unit acquires a signal output from the second detection terminal as the identification signal, and after the predetermined period, the power module control unit acquires the signal indicating the detected temperature.
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Specification