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Clock power supply device

A technology of power supply device and clock power supply, which is applied in the direction of battery circuit device, power circuit, circuit device, etc., which can solve the problems of the user's power department, and achieve the effect of accurate clock and accurate clock maintenance

Pending Publication Date: 2020-03-24
GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will cause trouble for users as well as the power sector

Method used

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Embodiment Construction

[0027] The technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0028] The embodiment of the present application provides a clock power supply device, which preferentially uses the main power module to supply power to the clock power without consuming battery current. When the power is off, the rechargeable supercapacitor charging and discharging module is preferentially used for power supply , when the voltage of the supercapacitor charging and discharging module is low, the voltage of the replaceable meter reading battery power supply module will be consumed first, and the repla...

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Abstract

The invention discloses a clock power supply device which comprises a clock battery power supply module, a main power supply module, a super capacitor charging and discharging module and a meter reading battery power supply module which are connected in sequence, the clock battery power supply module comprises a replaceable clock battery. The positive electrode of the clock battery is connected with the positive electrode of the first diode and the positive electrode of the second diode. The meter reading battery power supply module comprises a replaceable lithium battery, the anode of the lithium battery is connected with the input pin of an LDO power supply, and the output pin of the LDO power supply is connected with the anode of a third diode; the main power supply module comprises anAC / DC step-down switching power supply circuit. The super capacitor charging and discharging module comprises a super capacitor charging circuit and a super capacitor discharging circuit. According tothe clock power supply device, the clock power supply can be maintained for 48 hours through the super capacitor even if an extremely abnormal condition occurs, so that the clock can be ensured to bemaintained accurately when a battery is replaced by an electric power worker.

Description

technical field [0001] The present application relates to the technical field of instruments and meters, in particular to a clock power supply device. Background technique [0002] At present, the clock battery of a smart watch is generally required to be 3.6V and 1.2Ah. Under normal circumstances, the PTC operating current is very small, and the theoretical calculation can be used for more than 5 years after power failure. However, in practical applications, the battery may be undervoltage due to passivation and excessive internal resistance caused by long-term power consumption. Once the battery is out of power, it will lead to errors in the time scale of power accumulation, wrong settlement of time-of-use rates, and many other problems. Because the clock battery of the current smart meter is generally built-in and welded, once the clock power supply is undervoltage, the power department can only dismantle the meter and return it to the meter factory to open the cover and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06H02J7/34G04G19/00G04G19/10H02J7/00
CPCH02J9/06H02J9/061H02J7/345G04G19/00G04G19/10H02J7/0063
Inventor 张思建张晓平胡春潮王鹏曾争
Owner GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
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