CN207150242U - A kind of power supply for preventing intelligent electric meter battery undervoltage - Google Patents
A kind of power supply for preventing intelligent electric meter battery undervoltage Download PDFInfo
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- CN207150242U CN207150242U CN201720867008.7U CN201720867008U CN207150242U CN 207150242 U CN207150242 U CN 207150242U CN 201720867008 U CN201720867008 U CN 201720867008U CN 207150242 U CN207150242 U CN 207150242U
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Abstract
The utility model discloses a kind of power supply for preventing intelligent electric meter battery undervoltage, including the front and rear internal cell being sequentially connected in series, internal cell diode and internal MCU, and the front and rear external cell being sequentially connected in series, external cell diode and outside MCU, the negative pole ground connection of the internal cell, the positive pole of the internal cell is connected with the anode of internal cell diode, the negative electrode of the internal cell diode is welded to connect with internal MCU, described inside MCU and Clock battery input wire is welded to connect, the negative pole ground connection of the external cell, the positive pole of the external cell is connected with the anode of external cell diode, the negative electrode of the external cell diode and outside MCU contact portions, described outside MCU is connected with the wire contact of Clock battery input.The utility model ensure that battery powered reliability during normal work on the basis of cost is not increased, while remain under internal cell exceptional condition, change the flexibility of external cell.
Description
Technical field
Intelligent electric meter field is the utility model is related to, more particularly to a kind of power supply for preventing intelligent electric meter battery undervoltage.
Background technology
At present, the electric energy meter industry in China is in intelligent electric meter alternative stage.With the development of Chinese intelligent grid, as
The important component of smart grid electricity usage link, the demand of intelligent electric meter are significantly increased.In national grid and south electric network
In electric energy meter bid, intelligent electric meter ratio is increasingly becoming main flow.By taking national grid as an example, since 2009 to, end 2017 years,
State mesh sheet area intelligent electric meter installs number more than 300,000,000, and coverage rate is up to 99%.Market was replaced from 2017 will turn into intelligence electricity
The big main drive that table market increases.Recorded according to bid, estimation 2016-2020 intelligent electric meters replacement demand about 1.9
Hundred million, 43,700,000,000 yuan of space is replaced, it is substantially all to come from mesh sheet area of state.
Intelligent electric meter develops into the present, and advantage is numerous：The advantages that its stability, precision, service life, has obtained in the industry wide
The technology such as general accreditation, its autonomous meter reading, Automatic-settlement, data encryption is all in rank first.Although advantage is a lot, intelligence
All the time along with a very big hidden danger in energy ammeter development process：The problem of that is exactly battery undervoltage.Due under intelligent electric meter
Need to maintain the normal clock work of electric energy meter by internal cell after electricity, once battery undervoltage, clock will malfunction, and clock goes out
After mistake, ammeter cannot carry out normal rate electricity clearing.Many disputes will be produced with user by settling accounts error.Based on this,
Power office once finds battery undervoltage, and failure ammeter, which can only renew table, could thoroughly solve problem.Since 09 year, intelligent electric meter
There is the problem of battery undervoltage in many places, in order to thoroughly solve the problems, such as that ammeter is under-voltage, national grid was since 16 years
Using the replaceable ammeter scheme of battery, accompanying drawing 1 is the power supply architecture schematic diagram of the intelligent electric meter, and starting high-volume in 17 years recruits
Mark.But subject matter is existing for the program, the contact portion problem of battery and whole table.Although the scheme used at present is changed
Battery is very convenient, but the elastic force that contact portion relies primarily on copper sheet withstands battery contact, and its contact area is only 4mm2, in height
Under temperature, high humidity environment, contact easily aoxidizes, deformation, it is difficult to ensure that the contact reliability within the service life cycle.Because of electric energy meter
The enormous amount of installation, under same environmental condition, easily there is large batch of contact oxidation problem, hidden danger is huge.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of power supply for preventing intelligent electric meter battery undervoltage, do not increasing
On the basis of cost, battery powered reliability during normal work is ensure that, while is remained under internal cell exceptional condition, more
The flexibility of external cell is changed, so as to solve the problems, such as to be pointed out in background technology.
The technical solution adopted in the utility model is：
A kind of power supply for preventing intelligent electric meter battery undervoltage, including the front and rear internal cell being sequentially connected in series, internal cell two
Pole pipe and internal MCU, and the front and rear external cell being sequentially connected in series, external cell diode and outside MCU, the internal cell
Negative pole ground connection, the positive pole of the internal cell is connected with the anode of internal cell diode, the internal cell diode
Negative electrode is welded to connect with internal MCU, and described inside MCU and Clock battery input wire are welded to connect, the external electrical
The negative pole ground connection in pond, the positive pole of the external cell are connected with the anode of external cell diode, the external cell diode
Negative electrode and outside MCU contact portions, described outside MCU is connected with the wire contact of Clock battery input.
Preferably, described internal cell and external cell is 3.6V batteries, described external cell is replaceable
Battery, described external cell do not load intelligent electric meter when internally cell voltage is normal, internally under-voltage fashionable dress occurs for battery
Enter intelligent electric meter.
The utility model ensure that battery powered reliability during normal work, simultaneously on the basis of cost is not increased
Remain under internal cell exceptional condition, change the flexibility of external cell, by the internal cell of interior welds during normal work
Power supply, in this case, in the absence of the insecure problem of contact portion of internal cell and internal MCU, normal internal cell
It is consistent with the service life of intelligent electric meter that projected life, which is, so internal cell can be leaned against in intelligent electric meter service life
Powered for intelligent electric meter, under rare occasion, the situation of battery undervoltage occurs in internal cell, and now we are reloaded into external electrical
Pond, such case have been issued to the replaceable purpose of battery.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1. internal cell, 2. internal cell diodes, 3. inside MCU, 4. external cells, the pole of 5. external cell two
Pipe, 6. outside MCU.
Embodiment
The utility model is described in further detail below by specific embodiment and with reference to accompanying drawing.
Embodiment 1
As shown in figure 1, a kind of power supply for preventing intelligent electric meter battery undervoltage, including the front and rear internal cell 1 being sequentially connected in series,
Internal cell diode 2 and internal MCU3, and the front and rear external cell 4 being sequentially connected in series, external cell diode 5 and outside
MCU6, the negative pole ground connection of the internal cell 1, the positive pole of the internal cell 1 are connected with the anode of internal cell diode 2,
The negative electrode of the internal cell diode 2 is welded to connect with internal MCU3, described inside MCU3 and Clock battery input 7
Wire is welded to connect, the negative pole ground connection of the external cell 4, the positive pole of the external cell 4 and the sun of external cell diode 5
Extremely it is connected, the negative electrode of the external cell diode 5 and outside MCU6 contact portions, described outside MCU6 and Clock battery
The wire contact connection of input 7.
Described internal cell 1 and external cell 4 is 3.6V batteries, and described external cell 4 is replaceable battery, institute
The external cell 4 stated does not load intelligent electric meter when internally the voltage of battery 1 is normal, loads intelligence when internally battery 1 occurs under-voltage
Can ammeter.
The utility model adds 3.6V internal cell 1, internal electricity compared with the intelligent electric meter of existing replaceable battery
Pond 1 is connected using welding manner with internal MCU3, in the absence of original insecure problem of scheme contact portion, replaceable outside
Battery 4 does not load in intelligent electric meter normal work, only when battery undervoltage occurs for 3.6V internal cell 1, just 3.6V
External cell 4 load intelligent electric meter, the purpose for the arrangement is that on the basis of original scheme cost is not increased, solve original
The connectivity problem of scheme, because internal cell diode 2 and external cell diode 5 are two diodes, there is single-phase conducting
Characteristic, two-way diode will not have an impact between each other, even if internal cell 1 does not interfere with dress there occurs battery undervoltage yet
The external cell 4 entered.
Claims (2)
1. a kind of power supply for preventing intelligent electric meter battery undervoltage, it is characterised in that including the front and rear internal cell being sequentially connected in series
(1), internal cell diode (2) and internal MCU (3), and the front and rear external cell (4) being sequentially connected in series, the pole of external cell two
Manage (5) and outside MCU (6), the negative pole ground connection of the internal cell (1), positive pole and the internal cell two of the internal cell (1)
The anode of pole pipe (2) is connected, and negative electrode and the internal MCU (3) of the internal cell diode (2) are welded to connect, described inside
MCU (3) and Clock battery input (7) wire are welded to connect, the negative pole ground connection of the external cell (4), the external electrical
The positive pole in pond (4) is connected with the anode of external cell diode (5), negative electrode and the outside MCU of the external cell diode (5)
(6) contact portion, described outside MCU (6) are connected with the wire contact of Clock battery input (7).
A kind of 2. power supply for preventing intelligent electric meter battery undervoltage according to claim 1, it is characterised in that described inside
Battery (1) and external cell (4) are 3.6V batteries, and described external cell (4) is replaceable battery, described external cell
(4) do not load intelligent electric meter when internally battery (1) voltage is normal, load intelligent electric meter when internally battery (1) occurs under-voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720867008.7U CN207150242U (en) | 2017-07-17 | 2017-07-17 | A kind of power supply for preventing intelligent electric meter battery undervoltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720867008.7U CN207150242U (en) | 2017-07-17 | 2017-07-17 | A kind of power supply for preventing intelligent electric meter battery undervoltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207150242U true CN207150242U (en) | 2018-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720867008.7U Active CN207150242U (en) | 2017-07-17 | 2017-07-17 | A kind of power supply for preventing intelligent electric meter battery undervoltage |
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| CN (1) | CN207150242U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394878A (en) * | 2017-07-17 | 2017-11-24 | 浙江万胜智能科技股份有限公司 | A kind of power supply for preventing intelligent electric meter battery undervoltage |
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2017
- 2017-07-17 CN CN201720867008.7U patent/CN207150242U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394878A (en) * | 2017-07-17 | 2017-11-24 | 浙江万胜智能科技股份有限公司 | A kind of power supply for preventing intelligent electric meter battery undervoltage |
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