CN207232328U - A kind of simple efficient cell voltage calibration circuit - Google Patents
A kind of simple efficient cell voltage calibration circuit Download PDFInfo
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- CN207232328U CN207232328U CN201721224517.4U CN201721224517U CN207232328U CN 207232328 U CN207232328 U CN 207232328U CN 201721224517 U CN201721224517 U CN 201721224517U CN 207232328 U CN207232328 U CN 207232328U
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- resistance
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Abstract
It the utility model is related to calibration field of circuit technology, and in particular to a kind of simple efficient cell voltage calibration circuit, it includes：Calibrate observation circuit plate, simulated battery circuit board and circuit board to be monitored；Simulated battery circuit board includes：Seven, the 8th resistance of series connection, second cell voltage of termination of the 7th resistance, one end ground connection of the 8th resistance；And first cell voltage be connected between the seven, the 8th resistance；First, second cell voltage is also accessed in circuit board to be monitored；Micro-control unit is equipped with calibration observation circuit plate, micro-control unit obtains the voltage of two Battery packs by the seven, the 8th resistance respectively, and calibration signal is sent to circuit board to be monitored by control signal port further according to the voltage；The utility model is monitored cell voltage, and realization automatically controls PCBA and calibrated, and reaches the error for reducing micro-control unit MCU collection battery parameters, makes calibration result accurate, beneficial to the steady production of batch.
Description
Technical field
It the utility model is related to calibration field of circuit technology, and in particular to a kind of simple efficient cell voltage calibration electricity
Road.
Background technology
In daily life, percentage of batteries drives product such as：Lithium electric vacuum cleaner, electric tool, small household appliances etc., were using
Micro-control unit MCU usually requires to be monitored the working status of battery in journey, hard because of each product in process of production
Part parameter can all have some differences, and in these cases, electrical parameter conversions of the micro-control unit MCU to battery is just inevitable
Deviation can be produced, so that improper overvoltage, overcurrent, discharge time partially short etc. feelings occurs during the work time in portioned product
Condition, makes product not reach design requirement.It can cause cell damage, imbalance aggravation under serious conditions, battery performance cannot obtain
Efficiently use, to solve the problems, such as the above, producer needs to use accurately voltage source and every piece of PCBA of production is carried out once
Calibration；And in the prior art, it is calibrated using the mode manually controlled, its easily by power-supply fluctuation and it is artificial because
Element influences, and causes calibration result to occur abnormal, causes it to be difficult to batch steady production.
The content of the invention
To overcome drawbacks described above, the purpose of this utility model is to provide a kind of simple efficient cell voltage calibration electricity
Road.
The purpose of this utility model is achieved through the following technical solutions：
The utility model is a kind of simple efficient cell voltage calibration circuit, including：Calibrate observation circuit plate, simulation electricity
Pond circuit board and circuit board to be monitored；
Micro-control unit is equipped with the calibration observation circuit plate, the first port of the micro-control unit passes through the 3rd electricity
One end after resistance respectively with first, second resistance is connected, the second cell voltage of another termination of the first resistor, and described
The other end ground connection of two resistance, and the first capacitance is parallel with the second resistance；The second port of the micro-control unit is led to
Cross one end after the 6th resistance respectively with the four, the 5th resistance to be connected, the first battery of another termination electricity of the 4th resistance
Pressure, the other end ground connection of the 5th resistance, and the 5th resistor in parallel has the second capacitance；The micro-control unit passes through
Control signal port sends calibration signal to circuit board to be monitored；
The simulated battery circuit board includes：The seven, the 8th resistance being in series, a termination second of the 7th resistance
Cell voltage, one end ground connection of the 8th resistance；And first cell voltage be connected between the seven, the 8th resistance；
First, second cell voltage is also accessed in the circuit board to be monitored.
The utility model is monitored cell voltage, and realization automatically controls PCBA and calibrated, and reaches reduction microcontroller
Unit MCU gathers the error of battery parameter, makes calibration result accurate, beneficial to the steady production of batch.
Brief description of the drawings
For ease of explanation, the utility model is described in detail by following preferred embodiments and attached drawing.
Fig. 1 is the circuit theory schematic diagram of the utility model.
Embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is further described the utility model.It should be appreciated that specific embodiment described herein is only explaining this reality
With new, it is not used to limit the utility model.
Referring to Fig. 1, the utility model is a kind of simple efficient cell voltage calibration circuit, including：Calibration monitoring electricity
Road plate, simulated battery circuit board and circuit board to be monitored；
Micro-control unit MCU, the first port AD_1 of the micro-control unit MCU are equipped with the calibration observation circuit plate
It is connected by one end after 3rd resistor Rt3 respectively with first, second resistance Rt1, Rt2, the first resistor Rt1's is another
The other end ground connection GND of the second cell voltage V_BAT2, the second resistance Rt2 is terminated, and it is in parallel on the second resistance Rt2
There is the first capacitance Ct1；The second port AD_2 of the micro-control unit MCU by after the 6th resistance Rt6 respectively with the four, the 5th
One end of resistance Rt4, Rt5 are connected, the first cell voltage of another termination V_BAT1 of the 4th resistance Rt4, and the described 5th
The other end ground connection GND of resistance Rt5, and it is parallel with the second capacitance Ct2 on the 5th resistance Rt5；The micro-control unit MCU
Calibration signal is sent to circuit board PCBA to be monitored by control signal port；
The simulated battery circuit board includes：The seven, the 8th resistance R7, R8 being in series, the one of the 7th resistance R7
Terminate one end ground connection GND of the second cell voltage V_BAT2, the 8th resistance R8；And first cell voltage V_BAT1 be connected to
Between seven, the 8th resistance R7, R8；
Described first, second cell voltage V_BAT1, V_BAT2 are also accessed in the circuit board PCBA to be monitored.
In the utility model, first resistor Rt1 meets the second cell voltage V_BAT2, second resistance Rt2 ground connection GND, the
After one resistance Rt1 and second resistance Rt2 is to the second cell voltage V_BAT2 partial pressures, filtered through 3rd resistor Rt3 and the first capacitance Ct1
Ripple, the first port AD_1 to the micro-control unit MCU in calibration supervisory circuit plate do voltage conversion use.4th resistance Rt4
Meet the first cell voltage V_BAT1, the 5th resistance Rt5 and be grounded GND, the 4th resistance Rt4 and the 5th resistance Rt5 to the first battery electricity
After pressing V_BAT1 partial pressures, filtered through the 6th resistance Rt6 and the second capacitance Ct2, to calibration supervisory circuit plate micro-control unit MCU's
Second port AD_2 does voltage conversion use.8th resistance R8 one end is grounded GND, and the 7th resistance R7 of another termination is for simulating the
The voltage source of one batteries, the 7th resistance R7 mono- terminate the first cell voltage V_BAT1, and the 8th resistance R8 of another termination is used for mould
Intend the voltage source of the second batteries.First cell voltage V_BAT1, the second cell voltage V_BAT2 is respectively connected to circuit to be monitored
The PCBA of plate is providing calibrating voltage source.Calibration supervisory circuit plate is connected with circuit board to be monitored by signal wire, makes calibration
The micro-control unit MCU of supervisory circuit plate automatically controls the calibration actions of circuit board to be monitored.
The concrete operating principle of the utility model is：Micro-control unit MCU in calibration supervisory circuit plate passes through first end
Mouth AD_1, second port AD_2 circulations are converted to electricity after carrying out sampling filter to each section analog voltage in simulated battery circuit board
Pressure value Va, Vb.Whether the magnitude of voltage of micro-control unit MCU real time monitorings Va, Vb are in the deviation range that calibration allows.When Va,
The magnitude of voltage of Vb calibration allow deviation range in, calibrate supervisory circuit plate micro-control unit MCU by signal wire with treating
The communication of observation circuit plate carries out calibration actions.When the deviation range that the magnitude of voltage of Va, Vb allow beyond calibration, calibration monitoring electricity
The micro-control unit MCU of road plate terminates calibration actions in time by signal wire and circuit board to be monitored communication, avoids due to calibration
The fluctuation of voltage source causes calibration error to exceed scope of design.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (1)
- A kind of 1. simple efficient cell voltage calibration circuit, it is characterised in that including：Calibrate observation circuit plate, simulated battery Circuit board and circuit board to be monitored；Micro-control unit is equipped with the calibration observation circuit plate, after the first port of the micro-control unit is by 3rd resistor One end with first, second resistance is connected respectively, the second cell voltage of another termination of the first resistor, second electricity The other end ground connection of resistance, and the first capacitance is parallel with the second resistance；The second port of the micro-control unit passes through One end after six resistance respectively with the four, the 5th resistance is connected, the first cell voltage of another termination of the 4th resistance, institute The other end ground connection of the 5th resistance is stated, and the 5th resistor in parallel has the second capacitance；The micro-control unit passes through control Signal port sends calibration signal to circuit board to be monitored；The simulated battery circuit board includes：The seven, the 8th resistance being in series, second battery of termination of the 7th resistance Voltage, one end ground connection of the 8th resistance；And first cell voltage be connected between the seven, the 8th resistance；First, second cell voltage is also accessed in the circuit board to be monitored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721224517.4U CN207232328U (en) | 2017-09-22 | 2017-09-22 | A kind of simple efficient cell voltage calibration circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721224517.4U CN207232328U (en) | 2017-09-22 | 2017-09-22 | A kind of simple efficient cell voltage calibration circuit |
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| Publication Number | Publication Date |
|---|---|
| CN207232328U true CN207232328U (en) | 2018-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721224517.4U Active CN207232328U (en) | 2017-09-22 | 2017-09-22 | A kind of simple efficient cell voltage calibration circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507625A (en) * | 2018-11-09 | 2019-03-22 | 上海科梁信息工程股份有限公司 | The automatic calibrating method and terminal device of battery simulator |
-
2017
- 2017-09-22 CN CN201721224517.4U patent/CN207232328U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507625A (en) * | 2018-11-09 | 2019-03-22 | 上海科梁信息工程股份有限公司 | The automatic calibrating method and terminal device of battery simulator |
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