A high and low temperature rechargeable battery charging circuit applied to a fault diagnosis terminal
A technology for rechargeable batteries and fault diagnosis, applied in battery circuit devices, circuit devices, current collectors, etc., can solve the problems of low battery utilization efficiency and affect the normal operation of the device, and achieve a simple structure, low cost, safe and reliable operation. Effect
Active Publication Date: 2020-09-25
NARI TECH CO LTD +1
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Problems solved by technology
The fault diagnosis terminal installed on the high-voltage transmission line and the conventional power supply system usually use a battery. For areas with large temperature differences, the utilization efficiency of the battery is not high, which will seriously affect the normal operation of the device.
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[0016] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0017] A high and low temperature rechargeable battery charging circuit applied to the fault diagnosis terminal of the present invention adopts an external DC / DC charger to adjust the output voltage. The resistance value can be used to obtain two different charging voltages, which correspond to the charging voltage requirements of high-temperature rechargeable batteries and low-temperature rechargeable batteries respectively. The output of the DC / DC charger is divided into two circuits, which are respectively connected to the corresponding high-temperature rechargeable batteries and low-temperature rechargeable batteries through the switching circuit. The operation of the battery, the opening and closing circuit and the resistance adjustment are ca...
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The invention discloses a high and low temperature rechargeable battery charging circuit applied to a fault diagnosis terminal. The high and low temperature rechargeable battery charging circuit comprises a DC / DC charger, a first switching circuit Q1, a second switching circuit Q2, a high temperature rechargeable battery, a low temperature rechargeable battery, a first switch tube S1, a second switch tube S2, a third switch tube S3 and a drive circuit, wherein the drive grid electrode of the first switching circuit Q1 is connected to the first switch tube S1, and the drive grid electrode of the second switching circuit Q2 is connected to the second switch tube S2; the drive grid electrode of the first switch tube S1 is connected with the drive grid electrode of the third switch tube S3, the drive grid electrode of the third switch tube S3 is connected to the output end a of the drive circuit, and the drive grid electrode of the second switch tube S2 is connected to the output end b ofthe drive circuit; and the output voltage end of the DC / DC charger is connected with the third switch tube S3. By adopting the mode that the high temperature rechargeable battery is combined with thelow temperature rechargeable battery, the method disclosed by the invention is simple in structure, low in cost and high in reliability.
Description
technical field [0001] The invention relates to a high-low temperature rechargeable battery charging circuit applied to a fault diagnosis terminal, and belongs to the technical field of power supply for an overhead transmission line fault diagnosis terminal. Background technique [0002] With the rapid development of my country's power grid construction, the total length of UHV transmission lines in operation or under construction has exceeded 30,000 kilometers. Due to its high voltage level and long transmission distance, it crosses mountains, rivers, high-speed rail, highways and important power lines. There are many sections, the precise location of the fault and the diagnosis of the fault nature are of great significance to the safe, reliable and economical operation of the power system. On-line real-time fault diagnosis equipment installed on high-voltage transmission lines, because various sensors and signal transmission units for collecting signals are near overhead li...
Claims
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IPC IPC(8): H02J7/00
CPCH02J7/0091
Inventor 周华良丁志刚汪世平夏雨李吉邹志杨
Owner NARI TECH CO LTD