CN2884222Y - Device for measuring voltage of the break-end of cells - Google Patents
Device for measuring voltage of the break-end of cells Download PDFInfo
- Publication number
- CN2884222Y CN2884222Y CN 200420150626 CN200420150626U CN2884222Y CN 2884222 Y CN2884222 Y CN 2884222Y CN 200420150626 CN200420150626 CN 200420150626 CN 200420150626 U CN200420150626 U CN 200420150626U CN 2884222 Y CN2884222 Y CN 2884222Y
- Authority
- CN
- China
- Prior art keywords
- double
- pole
- throw switch
- housing
- pole double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a detector for measuring the terminal voltage at the open circuit of dry battery, comprising a housing, wherein, the housing is provided with a ballistic galvanometer; the housing is also provided with two double pole double throw switches and two connection contact points A and B for measurement; the double-pole connection termination of the double pole double throw switches is connected with a capacitor; one fixed selection termination is provided with the ballistic galvanometer, while the other fixed selection termination is connected with the double-pole connection termination of the other double pole double throw switch; one fixing selection termination of the other double pole double throw switch is connected with a standard battery, while the other fixing selection termination of the other double pole double throw switch is connected with the connection contact points A and B of the housing. The voltage value measured by the utility model is the dry battery open circuit terminal voltage, so the utility model has the advantages of accurate measurement, simple structure and easy operation.
Description
Technical field:
The utility model relates to a kind of voltage measuring apparatus, particularly a kind of open circuit measuring instrument of terminal voltage of dry cell of measuring.
Background technology
We know, voltage table is the terminal voltage can't measure dry cell and open circuit the time, at present in electricity, the mode of measuring the dry cell terminal voltage mainly is to use potentiometer, but, because potentiometer utilizes compensation principle to measure, the magnitude of voltage of therefore measuring gained is not the terminal voltage of dry cell when opening circuit.
Summary of the invention
The purpose of this utility model is: provide a kind of and can measure the open circuit measuring instrument of terminal voltage of dry cell, the magnitude of voltage of measurement is the terminal voltage of dry cell when opening circuit.
The utility model is to constitute like this: it comprises housing (9), ballistic galvanometer (3) is housed on housing (9), double-pole double-throw switch (1) and (4) are housed on housing (9) and the connecting terminal (A) of measuring mesuring battary (6) usefulness are installed and (B), on the double-pole link of double-pole double-throw switch (4), be connected with electric capacity (5), fixedly be connected with ballistic galvanometer (3) on the selecting side at one of double-pole double-throw switch (4), another of double-pole double-throw switch (4) fixedly selecting side is connected with the double-pole link of double-pole double-throw switch (1), fixedly be connected with standard cell (2) on the selecting side at one of double-pole double-throw switch (1), another of double-pole double-throw switch (1) fixedly selecting side is connected with (B) with the connecting terminal (A) of measurement mesuring battary (6) usefulness on being installed in housing (9).In order to measure the internal resistance of mesuring battary (6), at the connecting terminal (A) of measuring mesuring battary (6) usefulness be parallel with the measuring resistance (7) of a band single-way switch (8) (B).
The utility model compared with prior art, measured value is accurate, and measured magnitude of voltage is the terminal voltage of dry cell when opening circuit, and of the present utility model simple in structure, this conclusion of terminal voltage when processing ease, the electromotive force of the battery that simultaneously can verify on the physical textbook to be said equal it and open circuit.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is a fundamental diagram of the present utility model.
Embodiment
Embodiment of the present utility model: all appts of the present utility model: double-pole double-throw switch 1 and 4, standard cell 2, ballistic galvanometer 3, electric capacity 5, measuring resistance 7, single-way switch 8 all can be bought by the existing market, the available each other electric wire of each element connects or is installed on the printed circuit board (PCB), during making, the double-pole link of double-pole double-throw switch 4 is connected with electric capacity 5, with double-pole double-throw switch 4 one fixedly the selecting side connect ballistic galvanometer 3, another fixedly is connected with the double-pole link of double-pole double-throw switch 1 selecting side, again with double-pole double-throw switch 1 one fixedly the selecting side be connected with standard cell 2, another of double-pole double-throw switch 1 fixedly selecting side is connected with B with measuring connecting terminal A on being installed in housing 9, connecting terminal A and B preferably adopt the copper or the ag material that conduct electricity very well to make, measuring resistance 7 at a connecting terminal A and B two ends band single-way switch 8 in parallel, the resistance value of measuring resistance 7 can be according to using needs to determine, adopt the measuring resistance of 5～10 Ω to get final product generally speaking, then the element that connects is put into housing 9, with double-pole double-throw switch 1 and 4 and connecting terminal A and B be installed on the housing 9, ballistic galvanometer 3 is provided with the front portion that is fixed on housing 9.
During measurement, metering contact A is connected mesuring battary 6 with B, double-pole double-throw switch 4 is communicated with double-pole double-throw switch 1, double-pole double-throw switch 1 is communicated with standard cell 2, give electric capacity 5 chargings with standard cell 2 earlier, double-pole double-throw switch 4 is communicated with ballistic galvanometer 3 more then, and the data d on the ballistic galvanometer 3 is noted in electric capacity 5 discharges
s, same then, give electric capacity 5 chargings with mesuring battary 6, electric capacity 5 gives ballistic galvanometer 3 discharges, notes the data d on the ballistic galvanometer 3
x, because the electromotive force E of standard cell 2
sKnown, according to physical principle, can get the terminal voltage E of mesuring battary 6
x:
When measuring the internal resistance of mesuring battary 6, with single-way switch 8 closures, give electric capacity 5 chargings with mesuring battary 6, electric capacity 5 gives ballistic galvanometer 3 discharges, notes the data d on the ballistic galvanometer 3
r, obtain the internal resistance r of mesuring battary 6 this moment:
Claims (2)
1. measure the open circuit measuring instrument of terminal voltage of dry cell for one kind, it comprises housing (9), it is characterized in that: ballistic galvanometer (3) is housed on housing (9), double-pole double-throw switch (1) and (4) are housed on housing (9) and the connecting terminal (A) of measuring mesuring battary (6) usefulness are installed and (B), on the double-pole link of double-pole double-throw switch (4), be connected with electric capacity (5), fixedly be connected with ballistic galvanometer (3) on the selecting side at one of double-pole double-throw switch (4), another of double-pole double-throw switch (4) fixedly selecting side is connected with the double-pole link of double-pole double-throw switch (1), fixedly be connected with standard cell (2) on the selecting side at one of double-pole double-throw switch (1), another of double-pole double-throw switch (1) fixedly selecting side is connected with (B) with the connecting terminal (A) of measurement mesuring battary (6) usefulness on being installed in housing (9).
2. according to the open circuit measuring instrument of terminal voltage of the measurement dry cell of claim 1, it is characterized in that: at the connecting terminal (A) of measuring mesuring battary (6) usefulness be parallel with the measuring resistance (7) of a band single-way switch (8) (B).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150626 CN2884222Y (en) | 2004-10-27 | 2004-10-27 | Device for measuring voltage of the break-end of cells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150626 CN2884222Y (en) | 2004-10-27 | 2004-10-27 | Device for measuring voltage of the break-end of cells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2884222Y true CN2884222Y (en) | 2007-03-28 |
Family
ID=37957282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420150626 Expired - Fee Related CN2884222Y (en) | 2004-10-27 | 2004-10-27 | Device for measuring voltage of the break-end of cells |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2884222Y (en) |
-
2004
- 2004-10-27 CN CN 200420150626 patent/CN2884222Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070328 Termination date: 20091127 |