Battery-changeable single-phase charge-controlled intelligent electric meter used in state grid
A smart energy meter and single-phase fee technology, which is applied in the direction of special billing meters, can solve the problems affecting the life of the meter, and achieve the effect of preventing battery explosion accidents and saving national resources
Active Publication Date: 2012-12-26
WUHAN SAN FRAN ELECTRONICS CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and provide a battery-replaceable national grid single-phase fee-controlled smart electric energy meter, so as to solve the problem that the electric energy meter affects the electric energy meter itself because the backup battery life is only 10 years. The bottleneck of longevity
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[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0014] Such as figure 1 As shown, the present invention provides a battery-replaceable national grid single-phase tariff-controlled smart energy meter, including a battery unit, a single-chip central processing unit, and a basic functional module of the smart energy meter. The battery unit includes a built-in battery and an external The battery, the battery unit is connected to the single-chip central processing unit through the battery explosion-proof protection circuit to supply power, the battery unit is connected to the battery voltage detection circuit, and its battery voltage detection port is connected to the data input port of the single-chip central processing unit.
[0015] Such as figure 2 As shown, the external battery adopts the battery box 1 structure, and the battery box 1 is arranged on the front of the electric energy meter, and the c...
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The invention relates to a single-phase charge-controlled intelligent electric meter used in the state grid and provides a battery-changeable single-phase charge-controlled intelligent electric meter used in state grid. The intelligent electric meter comprises a battery unit, wherein the battery unit comprises an internal battery and an external battery; the battery unit is connected with a central processing unit of a singlechip through a battery-explosion-proof protection circuit to supply power; the battery unit is connected with a battery voltage detecting circuit; and a battery voltage detecting port of the battery voltage detecting circuit is connected with a data input port of the central processing unit of the singlechip. In the invention, two batteries are used for supplying power and the spare battery is externally arranged, so the battery is convenient to change when the battery voltage is low or the battery is damaged and the bottleneck problem of the service life of the electric meter because the service life of the electric meter can be as long as 20 hours, while the service life of the battery is only 10 years generally, is solved.
Description
technical field [0001] The invention relates to a single-phase cost-control intelligent electric energy meter for the national grid, in particular to a single-phase cost-control intelligent electric energy meter for the national electric grid with replaceable batteries. Background technique [0002] At present, in the scheme of single-phase cost-controlled smart energy meter used in the State Grid, there is generally only one spare battery welded on the main board of the energy meter. The life of the battery is generally only 10 years, while the life of the energy meter can generally reach 20 years. As an instrument, the electric energy meter cannot be reused after opening the cover to replace the battery under normal conditions. In this way, the electric meter that can be used for 20 years can only be used for 10 years due to the short life of a single component, and then must be replaced, which will cause Unnecessary waste of resources. Contents of the invention [0003...
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IPC IPC(8): G01R11/56
Inventor 李中泽
Owner WUHAN SAN FRAN ELECTRONICS CO LTD