CN208537608U - A kind of quiescent current test circuit with charging system product - Google Patents
A kind of quiescent current test circuit with charging system product Download PDFInfo
- Publication number
- CN208537608U CN208537608U CN201821179258.2U CN201821179258U CN208537608U CN 208537608 U CN208537608 U CN 208537608U CN 201821179258 U CN201821179258 U CN 201821179258U CN 208537608 U CN208537608 U CN 208537608U
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of, and the quiescent current with charging system product tests circuit, it includes power supply, single-pole single-throw switch (SPST), single-pole double-throw switch (SPDT), ammeter, battery, product test seat, the product test seat is for placing product to be measured, the power supply is connect by single-pole single-throw switch (SPST) with the product test seat, for powering to product to be measured, the battery is used to power to product to be measured, and the power supply passes sequentially through single-pole single-throw switch (SPST), product to be measured and single-pole double-throw switch (SPDT) and charges the battery.The utility model tests two states by single-pole single-throw switch (SPST) and single-pole double-throw switch (SPDT) free switching product charging measurement to be measured and quiescent current, quiescent current and charging current can be tested under same station, without other wiring, product just accesses ammeter in quiescent current test mode, can prevent electric current change dramatically from burning out ammeter.
Description
Technical field
The utility model relates to electronic circuit technology field more particularly to a kind of quiescent current surveys with charging system product
Try circuit.
Background technique
Power consumption is one of most important technical indicator of consumer electronics product, especially wearable is set with battery powered
It is standby, such as wrist-watch, bracelet.So such product, in the production test stage, quiescent current is a mandatory item.
Product has many test items in the production test stage, includes the survey of charging circuit in the product with charging system
The measurement of amount and quiescent current, quiescent current test are generally as the last one test item, during the charging process product electric current
Very big, electric current is within hundred times as many as thousand times of product quiescent current, such as a general 20uA of bracelet product quiescent current,
And in charging, electric current can reach 20mA or more.It therefore, the use of the range accuracy of ammeter must be uA rank, and cannot be by
High-current test item breaks ammeter.So the measurement of charging circuit and quiescent current measurement must separate (product Static Electro
Stream is the electric current under product dormant state).
Common processing mode is connected always with product in production test process using good digital ammeter
Electric current is measured, such high-current test item will not break ammeter, directly test quiescent current after all test items are complete.This
Scheme advantage be it is simple and convenient, the disadvantage is that expensive, production jig is at high cost.In addition processing mode is that charging system is individually surveyed
Examination, that is, include after quiescent current all test and passed through all test items, then individually test charging system.The method the disadvantage is that
Charging system individually separates, more test stations, and testing efficiency is low.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of the utility model is to provide a kind of reduction testing costs, raising test
The quiescent current with charging system product of efficiency tests circuit.
The technical scheme adopted by the utility model is a kind of quiescent current with charging system product tests circuit,
Including power supply, single-pole single-throw switch (SPST), single-pole double-throw switch (SPDT), ammeter, battery, product test seat, the product test seat
For placing product to be measured, the power supply is connect by single-pole single-throw switch (SPST) with the product test seat, for to be measured
Product power supply, the battery are connect with single-pole double-throw switch (SPDT), and connecting all the way with test bench for the single-pole double-throw switch (SPDT) is another
Road is connect by ammeter with test bench, and the battery is used to power to product to be measured, and the power supply passes sequentially through hilted broadsword
Single-throw switch, product to be measured and single-pole double-throw switch (SPDT) charge the battery.
Further, the ammeter is indicator type current meter.
Further, the single-pole single-throw switch (SPST) and single-pole double-throw switch (SPDT) are mechanical switch or electronic switch.
Further, the product test seat includes test fixture, and the test fixture is for fixing test product.
The beneficial effects of the utility model are: the utility model is freely cut by single-pole single-throw switch (SPST) and single-pole double-throw switch (SPDT)
Product charging measurement and quiescent current test two states to be measured are changed, quiescent current and charging electricity can be tested under same station
Stream, is not necessarily to other wiring, and product just accesses ammeter in quiescent current test mode, can prevent electric current change dramatically from burning out
Ammeter.
Detailed description of the invention
Specific embodiment of the present utility model is described further with reference to the accompanying drawing:
Fig. 1 is a kind of quiescent current test circuit diagram with charging system product.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
As shown in Figure 1, a kind of quiescent current with charging system product tests circuit comprising power supply 5V, hilted broadsword
Single-throw switch S1, single-pole double-throw switch (SPDT) S2, ammeter A, battery, product test seat Z, the product test seat Z are for placing simultaneously
Fixed product to be measured, the power supply 5V are connect by single-pole single-throw switch (SPST) S1 with the product test seat Z, for to be measured
Product power supply, the battery are connect with single-pole double-throw switch (SPDT) S2, and the single-pole double-throw switch (SPDT) S1's connect with test bench all the way,
Another way is connect by ammeter A with test bench Z, and the battery is used to power to product to be measured, and the power supply 5V is successively
It is charged the battery by single-pole single-throw switch (SPST) S1, product to be measured and single-pole double-throw switch (SPDT) S2
It is further used as preferred real-time mode, the single-pole single-throw switch (SPST) and single-pole double-throw switch (SPDT) are mechanical switch or electricity
Sub switch.Mechanical switch can realize the automatic of test by connecting control with controller by hand-guided, electronic switch
Change.
Embodiment
In the present embodiment, the ammeter A is uA grades of indicator type current meters, cheap, and is able to satisfy Static Electro
Current test demand.The single-pole single-throw switch (SPST) S1 and single-pole double-throw switch (SPDT) S2 is mechanical switch.Product to be measured is placed in product to survey
Seat Z is tried, single-pole single-throw switch (SPST) S1 is closed, single-pole double-throw switch (SPDT) S2 is beaten to non-ammeter one end, and whole system is by power supply electricity at this time
Source 5V power supply, is divided into two-way.It is that " power supply 5V-single-pole single-throw switch (SPST) S1-test product-GND " is used for production to be measured all the way
Product power supply is " 5V-S1-test product-S2-battery-GND " all the way for charging the battery, while the Charging of test product
It whether normal unites.
Test product is operated, after so that test product is entered dormant state, single-pole single-throw switch (SPST) S1 is opened, single-pole double-throw switch (SPDT)
S2 is beaten to ammeter one end, and whole system is battery powered at this time.Current direction is " battery-single-pole double-throw switch (SPDT) S2-electric current
Table-test product-GND ".(attention must first open S1 and switch S2 state again, and otherwise 5V power supply is directly over ammeter to battery
Charging, can burn out ammeter), test quiescent current.
The utility model passes through single-pole single-throw switch (SPST) and single-pole double-throw switch (SPDT) free switching product charging measurement to be measured and quiet
State testing current two states can test quiescent current and charging current under same station, be not necessarily to other wiring, and product exists
Ammeter is just accessed when quiescent current test mode, can prevent electric current change dramatically from burning out ammeter.
It is to be illustrated to the preferable implementation of the utility model, but the invention is not limited to the reality above
Example is applied, those skilled in the art can also make various equivalent variations without departing from the spirit of the present invention
Or replacement, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (4)
1. a kind of quiescent current with charging system product tests circuit, it is characterised in that: it includes power supply, single-pole single-throw(SPST
Switch, single-pole double-throw switch (SPDT), ammeter, battery, product test seat, the product test seat are used to place product to be measured,
The power supply is connect by single-pole single-throw switch (SPST) with the product test seat, for powering to product to be measured,
The battery is connect with single-pole double-throw switch (SPDT), and the single-pole double-throw switch (SPDT) is connect with test bench all the way, and another way is logical
Overcurrent table is connect with test bench, and the battery is used to power to product to be measured,
The power supply passes sequentially through single-pole single-throw switch (SPST), product to be measured and single-pole double-throw switch (SPDT) and charges the battery.
2. the quiescent current according to claim 1 with charging system product tests circuit, it is characterised in that: the electric current
Table is indicator type current meter.
3. the quiescent current according to claim 1 with charging system product tests circuit, it is characterised in that: the hilted broadsword
Single-throw switch and single-pole double-throw switch (SPDT) are mechanical switch or electronic switch.
4. the quiescent current according to claim 1 with charging system product tests circuit, it is characterised in that: the product
Test bench includes test fixture, and the test fixture is for fixing test product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821179258.2U CN208537608U (en) | 2018-07-24 | 2018-07-24 | A kind of quiescent current test circuit with charging system product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821179258.2U CN208537608U (en) | 2018-07-24 | 2018-07-24 | A kind of quiescent current test circuit with charging system product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208537608U true CN208537608U (en) | 2019-02-22 |
Family
ID=65385480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821179258.2U Expired - Fee Related CN208537608U (en) | 2018-07-24 | 2018-07-24 | A kind of quiescent current test circuit with charging system product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208537608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014617A (en) * | 2019-05-30 | 2020-12-01 | 北京新能源汽车股份有限公司 | Method, device and system for testing quiescent current of whole vehicle |
-
2018
- 2018-07-24 CN CN201821179258.2U patent/CN208537608U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014617A (en) * | 2019-05-30 | 2020-12-01 | 北京新能源汽车股份有限公司 | Method, device and system for testing quiescent current of whole vehicle |
| CN112014617B (en) * | 2019-05-30 | 2023-04-07 | 北京新能源汽车股份有限公司 | Method, device and system for testing quiescent current of whole vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190222 Termination date: 20200724 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |