CN202453409U - Voltage measuring device - Google Patents
Voltage measuring device Download PDFInfo
- Publication number
- CN202453409U CN202453409U CN2012200104280U CN201220010428U CN202453409U CN 202453409 U CN202453409 U CN 202453409U CN 2012200104280 U CN2012200104280 U CN 2012200104280U CN 201220010428 U CN201220010428 U CN 201220010428U CN 202453409 U CN202453409 U CN 202453409U
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- voltage
- test pencil
- voltage table
- display
- magnitude
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Abstract
The utility model discloses a voltage measuring device comprising at least two voltmeters which are serially connected with each other. In the specific application mode of the voltage measuring device, as the voltage measuring device comprises at least two voltmeters which are serially connected with each other, a battery exceeding a voltage measuring range still can be measured through the voltmeter with the original measuring range, and the measurement precision is improved.
Description
Technical field
The utility model relates to field of batteries, relates in particular to a kind of voltage measuring apparatus.
Background technology
The gear of multimeter test DC voltage generally all is that 200mV is arranged, 2V, and 20V etc., wherein the 2V shelves are higher than 20V shelves measuring accuracy, and 200mV is higher than the measuring accuracy of 2V shelves.The lead-acid battery cell tension generally more than 2.05V, because of exceeding 2V, can't adopt the test of 2V shelves for example.When research needs the change in voltage of trickle analysis lead-acid battery, adopt the gear precision of 20V not enough, can't tricklely observe the variation of voltage in the short time.
The utility model content
The technical matters that the utility model will solve is the deficiency to prior art, and a kind of voltage measuring apparatus that can accurately measure lead-acid battery voltage is provided.
The technical matters that the utility model will solve is solved through following technical scheme:
A kind of voltage measuring apparatus comprises at least two voltage tables, and said voltage table is connected in series.
Said voltage table has two; Be respectively first voltage table and second voltage table; Said first voltage table comprises the first positive test pencil and the first negative test pencil, and said second voltage table comprises the second positive test pencil and the second negative test pencil, and the said first negative test pencil is connected with the said second positive test pencil.
Said first voltage table also comprises first display that is used to show first magnitude of voltage, and said second voltage table also comprises second display that is used to show second magnitude of voltage.
Said voltage table has three; Be respectively first voltage table, second voltage table and tertiary voltage table; Said first voltage table comprises the first positive test pencil and the first negative test pencil, and said second voltage table comprises the second positive test pencil and the second negative test pencil, and said tertiary voltage table comprises the 3rd positive test pencil and the 3rd negative test pencil; The said first negative test pencil is connected with the said second positive test pencil, and the said second negative test pencil is connected with the said the 3rd positive test pencil.
Said first voltage table also comprises first display that is used to show first magnitude of voltage, and said second voltage table also comprises second display that is used to show second magnitude of voltage, and said tertiary voltage table also comprises the 3rd display that is used to show the tertiary voltage value.
Owing to adopted above technical scheme, the beneficial effect that the utility model is possessed is:
In the embodiment of the utility model, owing to comprise at least two voltage tables, voltage table is connected in series, and makes the battery above voltage range, still can use the voltage table of former range to measure, and improve measuring accuracy.
Description of drawings
Fig. 1 is in the utility model embodiment, the structural representation of voltage measuring apparatus.
Embodiment
Combine accompanying drawing that the utility model is done further explain through embodiment below.
As shown in Figure 1, the voltage measuring apparatus of the utility model, its a kind of embodiment comprises at least two voltage tables, these two voltage tables are through being connected in series.Wherein voltage table can be the separate voltages table, also can synthesize in other surveying instruments, like multimeter.Among Fig. 1 31 is battery.
In one embodiment; Voltage table comprises two; Two voltage tables are respectively first voltage table and second voltage table; First voltage table comprises that first positive test pencil 11, first negative test pencil 12, the second voltage tables comprise that the second positive test pencil 21 and second negative test pencil 22, the first positive test pencils 11 are connected with the second negative test pencil 22.Two measured magnitude of voltage additions of voltage table are the magnitude of voltage of measured battery.
In one embodiment, first voltage table comprises that also first display, 13, the first displays 13 are used to show first magnitude of voltage, and second voltage table comprises that also second display, 23, the second displays 23 are used to show second magnitude of voltage.
For example two multimeters are all transferred to the 2V shelves; With wherein the positive terminal of a multimeter and the negative pole end of another multimeter are connected; Two multimeters are connected on together; Test with two remaining two test pencils of multimeter then, the reading addition of two multimeter demonstrations is the voltage of test battery.Reading like two tables is respectively 1.02641V, 1.02645V, and the magnitude of voltage of so tested battery is exactly 2.05286V.
In one embodiment; Voltage table comprises three (figure does not show), and three voltage tables comprise first voltage table, second voltage table and tertiary voltage table, and first voltage table comprises the first positive test pencil and the first negative test pencil; Second voltage table comprises the second positive test pencil and the second negative test pencil; The tertiary voltage table comprises the 3rd positive test pencil and the 3rd negative test pencil, and the first positive test pencil is connected with the second negative test pencil, and the second positive test pencil is connected with the 3rd negative test pencil.
In one embodiment; First voltage table also comprises first display; First display is used to show first magnitude of voltage, and second voltage table also comprises second display, and second display is used to show second magnitude of voltage; The tertiary voltage table also comprises the 3rd display, and the 3rd display is used to show the tertiary voltage value.With the magnitude of voltage addition that three voltage tables show, get final product the magnitude of voltage of tested battery.
In one embodiment, the included voltage table of the voltage measuring apparatus of the utility model can also be 4,5 or more, and several multimeters of connecting just can use the 200mV shelves more, again degree of accuracy is improved one.
The principle of work of a kind of embodiment of the utility model is following:
Use the voltage of the voltage gear bit test battery of multimeter, the resistance that resistance is very big is arranged, when gear transfers to the voltage gear in the multimeter; The very big resistance string of test pencil and resistance together, test pencil be connected by battery after, just have a very small electric current through big resistance in the multimeter; Convert through gathering electric current, demonstrate the voltage of tested battery, after the voltage table series connection; Be equivalent to two big resistance series connection, total resistance is double, and electric current reduces by half; The voltage that demonstrates tested battery just reduces by half, and no longer exceeds gear.
Above content is the further explain that combines concrete embodiment that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection domain of the utility model.
Claims (5)
1. a voltage measuring apparatus is characterized in that, comprises at least two voltage tables, and said voltage table is connected in series.
2. voltage measuring apparatus as claimed in claim 1; It is characterized in that; Said voltage table has two, is respectively first voltage table and second voltage table, and said first voltage table comprises the first positive test pencil and the first negative test pencil; Said second voltage table comprises the second positive test pencil and the second negative test pencil, and the said first negative test pencil is connected with the said second positive test pencil.
3. voltage measuring apparatus as claimed in claim 2 is characterized in that, said first voltage table also comprises first display that is used to show first magnitude of voltage, and said second voltage table also comprises second display that is used to show second magnitude of voltage.
4. voltage measuring apparatus as claimed in claim 1 is characterized in that, said voltage table has three; Be respectively first voltage table, second voltage table and tertiary voltage table; Said first voltage table comprises the first positive test pencil and the first negative test pencil, and said second voltage table comprises the second positive test pencil and the second negative test pencil, and said tertiary voltage table comprises the 3rd positive test pencil and the 3rd negative test pencil; The said first negative test pencil is connected with the said second positive test pencil, and the said second negative test pencil is connected with the said the 3rd positive test pencil.
5. voltage measuring apparatus as claimed in claim 4; It is characterized in that; Said first voltage table also comprises first display that is used to show first magnitude of voltage; Said second voltage table also comprises second display that is used to show second magnitude of voltage, and said tertiary voltage table also comprises the 3rd display that is used to show the tertiary voltage value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200104280U CN202453409U (en) | 2012-01-11 | 2012-01-11 | Voltage measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200104280U CN202453409U (en) | 2012-01-11 | 2012-01-11 | Voltage measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202453409U true CN202453409U (en) | 2012-09-26 |
Family
ID=46869264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200104280U Expired - Fee Related CN202453409U (en) | 2012-01-11 | 2012-01-11 | Voltage measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202453409U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109725571A (en) * | 2018-12-24 | 2019-05-07 | 广东核电合营有限公司 | A kind of display and control circuit and its device |
-
2012
- 2012-01-11 CN CN2012200104280U patent/CN202453409U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109725571A (en) * | 2018-12-24 | 2019-05-07 | 广东核电合营有限公司 | A kind of display and control circuit and its device |
| CN109725571B (en) * | 2018-12-24 | 2020-08-25 | 广东核电合营有限公司 | Display and control circuit and device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20150111 |
|
| EXPY | Termination of patent right or utility model |