Direct current power source under-voltage protection module
An undervoltage protection module and DC power supply technology, applied in the direction of electrical components, output power conversion devices, etc., can solve the problems of not considering the operation of electrical equipment, damage of electrical equipment, and affecting system operation, so as to avoid continuous jumping , small size, and the effect of improving the accuracy of the benchmark
Inactive Publication Date: 2016-12-07
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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Problems solved by technology
[0002] In the process of power supply, when undervoltage occurs, it is easy to cause damage to electrical equipment
[0003] In the related prior art, CN 102222887 is an under-voltage monitoring circuit. Its simple series voltage detection has the possibility of violent jumps when the input voltage fluctuates greatly, thereby affecting the operation of the system; and its signal output adopts electromagnetic For relays, the installation direction needs to be installed vertically to increase reliability
[0004] CN 203788176 U discloses an alarm system power supply circuit with undervoltage monitoring function, which includes multiple integrated circuits and has a complex structure
[0005] The above existing technologies have not considered the operation of the remaining electrical equipment after the undervoltage
Method used
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Embodiment 1
[0033] Such as figure 1 As shown, it is a structure diagram of a specific embodiment of a DC power supply undervoltage protection module of the present invention. see figure 1 A DC power supply undervoltage protection module of the present invention includes an energy storage circuit 1 and a signal detection circuit for detecting an undervoltage signal; the input terminal of the energy storage circuit 1 is used for connecting an external DC power supply 8, and the output terminal is used for connecting an external electrical device 10. The signal detection circuit includes a voltage stabilizing circuit 3, a reference circuit 4, a voltage divider circuit 2, a hysteresis comparison circuit 5 and a signal output circuit 7; the input end of the voltage stabilizing circuit 3 is connected to the output end of the energy storage circuit 1, and the voltage stabilizing circuit 3. The output terminal is connected to one input terminal 5 of the hysteresis comparison circuit through the ...
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The invention discloses a direct current power source under-voltage protection module which comprises an energy storage circuit and a signal detection circuit used for detecting under-voltage signals, an input end of the energy storage circuit is used for external connection with a direct current power source, and an output end of the energy storage circuit is used for external connection with electric equipment; the signal detection circuit comprises a voltage stabilizing circuit, a reference circuit, a voltage dividing circuit, a hysteresis comparison circuit and a signal output circuit. Via use of the direct current power source under-voltage protection module, normal power source output can be kept for a while when the power source is under voltage, the electric equipment is enabled to work normally when the power source is under voltage for a short time, the under-voltage signal can be sent out, and under-voltage conditions can be recorded when faults occur.
Description
technical field [0001] The technical field of undervoltage protection of the present invention, more specifically, relates to a DC power supply undervoltage protection module. Background technique [0002] During the power supply process, when an undervoltage occurs, it is easy to cause damage to the electrical equipment. [0003] In the related prior art, CN 102222887 is an undervoltage monitoring circuit. Its simple series voltage detection has the possibility of violent jumps when the input voltage fluctuates greatly, thereby affecting the operation of the system; and its signal output adopts electromagnetic For relays, the installation direction should be installed vertically to increase reliability. [0004] CN 203788176 U discloses an alarm system power supply circuit with an undervoltage monitoring function, which includes multiple integrated circuits and has a complex structure. [0005] None of the above prior art considers the operation of the rest of the electri...
Claims
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IPC IPC(8): H02M1/32
CPCH02M1/32H02M1/325
Inventor 范荣辉夏晶李华刘永江左鹏周金楼刘军
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD