CN104049135B - Series-type voltage source voltage measuring apparatus - Google Patents
Series-type voltage source voltage measuring apparatus Download PDFInfo
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- CN104049135B CN104049135B CN201410289175.9A CN201410289175A CN104049135B CN 104049135 B CN104049135 B CN 104049135B CN 201410289175 A CN201410289175 A CN 201410289175A CN 104049135 B CN104049135 B CN 104049135B
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Abstract
The present invention provides a kind of series-type voltage source voltage measuring apparatus, including first, second switch group, first, second electric capacity, first, second, 3rd connecting valve and MCU, when first, when second switch group single switch device is closed, the voltage source monomer being connected with closure switch device in first switch group to the voltage source monomer being connected with closure switch device in second switch group is first, second electric capacity charges, during completion to be charged, disconnect all switching devices, MCU controls first, second and the 3rd connecting valve break-make, measure the first electric capacity and/or the second electric capacity both end voltage.Whole measurement apparatus, simple structure, the judgement and complicated control of polarity need not be carried out in measurement process, only single switch device is respectively arranged between single voltage source and electric capacity in both positive and negative polarity, avoiding excessive switching device from setting causes influence of the extraneous factors such as contact resistance to measurement result, it is ensured that certainty of measurement.
Description
Technical field
The present invention relates to voltage detecting technical field, more particularly to series-type voltage source voltage measuring apparatus.
Background technology
In the epoch of scientific and technological high speed development now, electricity has become an indispensable part.And voltage is used as the one of electricity
Individual criterion, the accurate detection of voltage is also into a job for having to do.In battery management system, if being gone here and there to multiple
The voltage detecting for joining voltage source is inaccurate, then the output voltage of voltage source is unstable, high or low, and this can all be produced very to load
Big influence, such as voltage can not enough cause the load cannot normal operation, then inaccurate voltage then cause whole system all without
Method produces due effect, and overtension can then cause the load cannot to bear and burn out, or even produce fire, and this is in actual life
In it is of common occurrence.Therefore the accurate detection of voltage has become a huge challenge for having to solve in battery management system.
The series-type voltage source voltage measuring apparatus for using at present are under the control of clock signal, and equipment test constantly is multiple
The voltage of voltage source, during measurement, the polarity of former and later two voltage sources is different, then measurement obtains the magnitude of voltage of opposed polarity, if
Measure switch in measurement process to break down, then the polarity of voltage that two voltage sources are obtained is identical, so as to judge faulty product
It is raw.However, in actual motion, the voltage source consumption of series connection is not necessarily identical, and can be consumed in measurement process.If preceding
Group voltage source has certain voltage difference afterwards, and still obtained after front and rear synthesis in measurement with preceding group of identical polarity of voltage, then
System can be judged by accident, therefore this method for wishing to judge whether faulty generation by the difference of the polarity of voltage for measuring
Can not be operated as expected.And this kind of method MCU not only needs voltage detecting function, also need to carry out polarity to sentence
It is fixed, it is higher to MCU requirements, therefore cost is also higher.
The content of the invention
Based on this, it is necessary to high for existing series-type voltage source voltage measuring apparatus complex structure, production cost
Problem, there is provided a kind of simple structure, the series-type voltage source voltage measurement dress that with low cost, reliability is high and certainty of measurement is high
Put.
A kind of series-type voltage source voltage measuring apparatus, for the tandem type electricity to the voltage source monomer including multiple series connection
The voltage of potential source is measured, including first switch group, second switch group, the first electric capacity, the second electric capacity, the first connecting valve,
Second connecting valve, the 3rd connecting valve and MCU, wherein, the first switch group and the second switch group are respectively including more
The capacitance of individual switching device, the capacitance of first electric capacity and second electric capacity is into known proportion；
In the first switch group one end of each switching device respectively with odd-numbered in many series electrical potential sources to be measured
Voltage source monomer positive pole is connected, in the first switch group one end of each switching device other end and first electric capacity and
One end connection of first connecting valve；
In the second switch group one end of each switching device respectively with even-numbered in many series electrical potential sources to be measured
Voltage source monomer positive pole is connected, one end of the second switch group breaker in middle device other end and second electric capacity and described
One end connection of the 3rd connecting valve；
The other end of first electric capacity is connected with the other end of second electric capacity, one end of second connecting valve
It is connected between first electric capacity and second electric capacity, the other end of first connecting valve, second connection are opened
The other end of pass is connected with the MCU respectively, and the other end of the 3rd connecting valve is another with first connecting valve
End connection.
Series-type voltage source of the present invention voltage measuring apparatus, when single switch device in first switch group and second switch group
During closure, the voltage source monomer being connected with closure switch device in first switch group to closure switch device in second switch group
The voltage source monomer of connection is that the first electric capacity and the second electric capacity charge, and during completion to be charged, disconnects first switch group and second and opens
The all switching devices of Guan Zuzhong, when the just extremely electricity of odd-numbered in the multiple voltage sources charged for the first electric capacity and the second electric capacity
During potential source monomer, close the first connecting valve and the second connecting valve, measure the first electric capacity magnitude of voltage, when for the first electric capacity with
Second electric capacity charge multiple voltage sources in just extremely the voltage source monomer of even-numbered when, close the second connecting valve and the 3rd
Connecting valve, the capacitance for measuring the electric capacity of magnitude of voltage first of the second electric capacity sets with the capacitance of the second electric capacity into known proportion
Put so that need to only know that the magnitude of voltage of one of electric capacity in both would know that the magnitude of voltage in whole multivoltage source to be measured.It is whole
Individual measurement apparatus, simple structure need not carry out the judgement and complicated control of polarity in measurement process, reduce at MCU
The requirement of reason ability, it is allowed to using the MCU that is of relatively low cost, reduce production cost, in addition, single voltage source and electric capacity it
Between be only respectively arranged with single switch device in both positive and negative polarity, it is to avoid excessive switching device is set causes the extraneous factors such as contact resistance
Influence to measurement result, it is ensured that certainty of measurement, so series-type voltage source of the present invention voltage measuring apparatus are a kind of structures
Simply, the device that with low cost, reliability is high and certainty of measurement is high.
Brief description of the drawings
Fig. 1 is the structural representation of series-type voltage source voltage measuring apparatus one embodiment of the present invention；
Fig. 2 is second structural representation of embodiment of series-type voltage source of the present invention voltage measuring apparatus；
Fig. 3 is the 3rd structural representation of embodiment of series-type voltage source of the present invention voltage measuring apparatus；
Fig. 4 is the 4th structural representation of embodiment of series-type voltage source of the present invention voltage measuring apparatus.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below according to drawings and Examples
The present invention is further elaborated.It should be appreciated that specific implementation described herein is only used to explain the present invention, not
Limit the present invention.
As shown in figure 1, a kind of series-type voltage source voltage measuring apparatus, for the voltage source monomer including multiple series connection
The voltage in series-type voltage source measure, including first switch group 100, second switch group 200, the first electric capacity 300, second
Electric capacity 400, the first connecting valve 500, the second connecting valve 600, the 3rd connecting valve 700 and MCU800, wherein, described first
Switches set 100 and the second switch group 200 include multiple switching devices parallel with one another respectively, first electric capacity 300
The capacitance of capacitance and second electric capacity 400 is into known proportion；
In the first switch group 100 one end of each switching device respectively with odd-numbered in many series electrical potential sources to be measured
Voltage source monomer positive pole connection, each switching device other end and first electric capacity 300 in the first switch group 100
One end connection of one end and first connecting valve 500；
In the second switch group 200 one end of each switching device respectively with even-numbered in many series electrical potential sources to be measured
The connection of voltage source monomer positive pole, one end of the breaker in middle device other end of the second switch group 200 and second electric capacity 400
And one end connection of the 3rd connecting valve 700；
The other end of first electric capacity 300 is connected with the other end of second electric capacity 400, second connecting valve
600 one end is connected between first electric capacity 300 and second electric capacity 400, first connecting valve 500 it is another
End, the other end of second connecting valve 600 be connected with the MCU800 respectively, the 3rd connecting valve 700 it is another
End is connected with the other end of first connecting valve 500.
When the first switch group 100 and the single switch device of the second switch group 200 are closed, opened with described first
The voltage source monomer of closure switch device connection is extremely connected with closure switch device in the second switch group 200 in pass group 100
Voltage source monomer charge for first electric capacity 300 and second electric capacity 400, during completion to be charged, disconnect described first
All switching devices in switches set 100 and the second switch group 200, when being first electric capacity 300 and second electric capacity
In the 400 multiple voltage sources for charging just extremely the voltage source monomer of odd-numbered when, close first connecting valve 500 and institute
The second connecting valve 600 is stated, the magnitude of voltage of first electric capacity 300 is measured.When be first electric capacity 300 and it is described second electricity
Hold 600 charge multiple voltage sources in just extremely the voltage source monomer of even-numbered when, close it is described second connection 600 switch and
3rd connecting valve 700, measures the magnitude of voltage of second electric capacity.
The capacitance of first electric capacity is set with the capacitance of second electric capacity into known proportion, that is, knowing wherein
One magnitude of voltage of electric capacity, you can know the magnitude of voltage in whole multivoltage source to be measured.
Preferably, the first connecting valve, one end of the second connecting valve are connected with the voltage measurement end of MCU.According to survey
The need for amount environment, can be with setting signal modulate circuit, so as to MCU between MCU and first, second, third connecting valve
It is capable of the voltage of detection voltage voltage source higher.
Series-type voltage source of the present invention voltage measuring apparatus, when single switch device in first switch group and second switch group
During closure, the voltage source monomer being connected with closure switch device in first switch group to closure switch device in second switch group
The voltage source monomer of connection is that the first electric capacity and the second electric capacity charge, and during completion to be charged, disconnects first switch group and second and opens
The all switching devices of Guan Zuzhong, when the just extremely electricity of odd-numbered in the multiple voltage sources charged for the first electric capacity and the second electric capacity
During potential source monomer, close the first connecting valve and the second connecting valve, measure the first electric capacity magnitude of voltage, when for the first electric capacity with
Second electric capacity charge multiple voltage sources in just extremely the voltage source monomer of even-numbered when, close the second connecting valve and the 3rd
Connecting valve, the capacitance for measuring the electric capacity of magnitude of voltage first of the second electric capacity sets with the capacitance of the second electric capacity into known proportion
Put so that need to only know the magnitude of voltage of one of electric capacity in both, you can know the magnitude of voltage in whole multivoltage source to be measured.It is whole
Individual measurement apparatus, simple structure need not carry out the judgement and complicated control of polarity in measurement process, reduce at MCU
The requirement of reason ability, it is allowed to using the MCU that is of relatively low cost, reduce production cost, in addition, single voltage source and electric capacity it
Between be only respectively arranged with single switch device in both positive and negative polarity, it is to avoid excessive switching device is set causes the extraneous factors such as contact resistance
Influence to measurement result, it is ensured that certainty of measurement, so series-type voltage source of the present invention voltage measuring apparatus are a kind of structures
Simply, with low cost and certainty of measurement device high.
Series-type voltage source of the present invention voltage measuring apparatus are in measurement process, it is not necessary to repeat, electric capacity two is varied multiple times
End polarity and quantity of electric charge size, reduce the number of times of quantity of electric charge mutation on electric capacity, extend the use of electric capacity and other devices
Life-span, so series-type voltage source of the present invention voltage measuring apparatus or a kind of long service life, meet industrial device.
As shown in Fig. 2 wherein in one embodiment, series-type voltage source voltage measuring apparatus are also let out including first
Stream switch 920, one end of the first earial drainage switch 920 is connected to first electric capacity 300 with first connecting valve 500
Between, the other end of first earial drainage switch 920 be connected to second electric capacity 400 and the 3rd connecting valve 700 it
Between.
First earial drainage switch closure release the first electric capacity and the second electric capacity both end voltage, to prepare to measure work next time
Make.
As shown in figure 3, wherein in one embodiment, series-type voltage source voltage measuring apparatus are also let out including second
Stream switch 940 and the 3rd earial drainage switch 960；
One end of second earial drainage switch 940 be connected to first electric capacity 300 and second connecting valve 600 it
Between, the other end of the second earial drainage switch 940 is connected between first electric capacity 300 and first connecting valve 500,
One end of the 3rd earial drainage switch 960 is connected between second electric capacity 400 and two connecting valve, and the described 3rd lets out
Between the other end connection of stream switch 960 and second electric capacity 400 and the 3rd connecting valve 700.
In the present embodiment, series-type voltage source voltage measuring apparatus include second and the 3rd earial drainage switch, second
Earial drainage switch is in parallel with the first electric capacity, and is arranged between the first electric capacity and the first connecting valve, the 3rd earial drainage switch with it is described
Second electric capacity is in parallel, and is arranged between two electric capacity and the 3rd connecting valve, and the first electric capacity and the second electric capacity are respectively provided with earial drainage
Switch, can be according to the electric charge on selection the first electric capacity of release the need for actual measurement or the electric charge on the second electric capacity.Specifically
For, when the second earial drainage of closure is switched, the electric charge on the first electric capacity of release when the 3rd earial drainage of closure is switched, discharges the second electric capacity
On electric charge.
Under being described in detail below in conjunction with Fig. 3, in series-type voltage source of the present invention, voltage measuring apparatus are one of implements
In example, the detailed process of measurement series-type voltage source voltage.
MCU carries out digital numbering to each power supply in series-type voltage source, and stores.MCU carries out digital numbering and volume
Number odd, even judgement, these processing procedures are all simple treatment and computing, judge compared to complicated polarity and computing comes
Say, the requirement to MCU performances is substantially reduced.
First, assume that this needs to measure the magnitude of voltage between No. 1-No. 3 power supplys.
First, closure is connected with No. 1 positive source switching device K1 and switch the K4 that negative poles are connected with No. 3, and simultaneously
Disconnect the first connecting valve 500, the second connecting valve 600, the 3rd connecting valve 700 and the first earial drainage switch 920 and second
Earial drainage switch 940, now, 1-3 voltage sources charge to the first electric capacity and the second electric capacity, during completion to be charged, disconnect switch K1
And K4, MCU judge No. 1 power supply number for odd number or be even number, now No. 1 power supply number is 1, and as odd number then closes the first company
Connect switch 500 and second connecting valve 600, voltage on the first electric capacity of measurement, the magnitude of voltage of 1-3 voltage sources is equal to 2 times the
Magnitude of voltage on one electric capacity.Measure on the first electric capacity after voltage, the first earial drainage of closure switch 920, on the first electric capacity of release
Electric charge.
2nd, assume that this needs to measure the magnitude of voltage between No. 2-No. 4 power supplys.
First, closure is connected with No. 2 positive sources switching device K2 and switch the K5 that negative poles are connected with No. 4, while disconnected
The first connecting valve 500, the second connecting valve 600, the 3rd connecting valve 700 and the first earial drainage switch 920 and second is driven to let out
Stream switchs 940, and now 2-4 power supplys charge to the first electric capacity and the second electric capacity, during completion to be charged, disconnects switch K2 and K5,
MCU judges No. 2 power supply numbers for odd number or is even number, and now No. 2 power supply numbers are 2, as even number, then close the second connection and open
The connecting valve 700 of pass 600 and the 3rd, MCU measures voltage on the second electric capacity, and the magnitude of voltage of 2-4 voltage sources is equal to 2 times second
Magnitude of voltage on electric capacity.Measure on the second electric capacity after voltage.Close the second earial drainage switch 940, the electricity on the first electric capacity of release
Lotus.Wherein in one embodiment, the switching device is switch or relay or photoelectrical coupler.
Switching device is used to control connecting or disconnecting for circuit, in the present embodiment from low cost, dependable performance
Switch or relay or photoelectrical coupler as switching device, reduce production cost, it is ensured that the performance of device.
As shown in figure 4, wherein in one embodiment, also including display device 960, the display device and the MCU
Connection.
Display device is used to show the numbers such as the partial data stored in MCU, first, second capacitance voltage value of such as measurement
According to being easy to that operator is directly perceived, simply obtain data.
As shown in figure 4, wherein in one embodiment, also including input unit 980, the input unit and the MCU
Connection.
Input unit is used for operator's input data/instruction to MCU, such as operator's input detection X-Y cell voltages
Instruction, so that control of the operator to measurement apparatus is realized in perfection.
Wherein in one embodiment, first electric capacity and second electric capacity are the electric capacity of same model.
First electric capacity and the second electric capacity model are identical, then its electrical parameter is also identical, that is, measure the voltage on the first electric capacity
It is the half of magnitude of voltage in many series electrical potential sources to be measured to be worth.Simplify the calculating process of voltage.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Shield scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (5)
1. a kind of series-type voltage source voltage measuring apparatus, for the series-type voltage to the voltage source monomers including multiple series connection
The voltage in source is measured, it is characterised in that including first switch group, second switch group, the first electric capacity, the second electric capacity, first
Connecting valve, the second connecting valve, the 3rd connecting valve, MCU, the second earial drainage switch and the 3rd earial drainage switch, wherein, described the
One switches set and the second switch group include multiple switch device, the capacitance of first electric capacity and second electricity respectively
The capacitance of appearance is into known proportion；
In the first switch group one end of each switching device respectively with the voltage of odd-numbered in many series electrical potential sources to be measured
Source monomer positive pole is connected, one end of each switching device other end and first electric capacity and described in the first switch group
One end connection of the first connecting valve；
In the second switch group one end of each switching device respectively with the voltage of even-numbered in many series electrical potential sources to be measured
Source monomer positive pole is connected, one end of each switching device other end and second electric capacity and described in the second switch group
One end connection of the 3rd connecting valve；
The other end of first electric capacity is connected with the other end of second electric capacity, one end connection of second connecting valve
Between first electric capacity and second electric capacity, the other end of first connecting valve, second connecting valve
The other end is connected with the MCU respectively, and the other end of the 3rd connecting valve connects with the other end of first connecting valve
Connect；
Set respectively between the MCU and first connecting valve, second connecting valve and the 3rd connecting valve
Be equipped with signal conditioning circuit, one end of the second earial drainage switch be connected to first electric capacity and second connecting valve it
Between, the other end of the second earial drainage switch is connected between first electric capacity and first connecting valve, and the described 3rd
One end of earial drainage switch is connected between second electric capacity and two connecting valve, the other end of the 3rd earial drainage switch
It is connected between second electric capacity and the 3rd connecting valve.
2. series-type voltage source according to claim 1 voltage measuring apparatus, it is characterised in that the switching device is to open
Close or relay or photoelectrical coupler.
3. series-type voltage source according to claim 1 and 2 voltage measuring apparatus, it is characterised in that also filled including display
Put, the display device is connected with the MCU.
4. series-type voltage source according to claim 1 and 2 voltage measuring apparatus, it is characterised in that also filled including input
Put, the input unit is connected with the MCU.
5. series-type voltage source according to claim 1 and 2 voltage measuring apparatus, it is characterised in that first electric capacity
It is the electric capacity of same model with second electric capacity.
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| CN201410289175.9A CN104049135B (en) | 2014-06-24 | 2014-06-24 | Series-type voltage source voltage measuring apparatus |
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| CN201410289175.9A CN104049135B (en) | 2014-06-24 | 2014-06-24 | Series-type voltage source voltage measuring apparatus |
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| CN101207295A (en) * | 2007-11-22 | 2008-06-25 | 马仁源 | Apparatus and method for voltage equalizing of monomer battery voltage in lithium batteries |
| CN101363879A (en) * | 2007-08-09 | 2009-02-11 | 比亚迪股份有限公司 | Electrical level polar conversion device, electric voltage sampling apparatus and electric voltage sampling method |
| CN103176131A (en) * | 2011-12-22 | 2013-06-26 | 赵恩海 | Single battery voltage measurement circuit in any one battery in series-connection battery pack |
| CN103616557A (en) * | 2013-10-29 | 2014-03-05 | 广东易事特电源股份有限公司 | A voltage detecting circuit for single batteries in a series storage battery set, a detecting method for the same, and a detecting device for the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010085170A (en) * | 2008-09-30 | 2010-04-15 | Mazda Motor Corp | Voltage measuring method and voltage measuring device of battery cell |
| JP5310646B2 (en) * | 2010-05-06 | 2013-10-09 | 株式会社デンソー | Driving method of flying capacitor type assembled battery voltage detection circuit |
-
2014
- 2014-06-24 CN CN201410289175.9A patent/CN104049135B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363879A (en) * | 2007-08-09 | 2009-02-11 | 比亚迪股份有限公司 | Electrical level polar conversion device, electric voltage sampling apparatus and electric voltage sampling method |
| CN101207295A (en) * | 2007-11-22 | 2008-06-25 | 马仁源 | Apparatus and method for voltage equalizing of monomer battery voltage in lithium batteries |
| CN103176131A (en) * | 2011-12-22 | 2013-06-26 | 赵恩海 | Single battery voltage measurement circuit in any one battery in series-connection battery pack |
| CN103616557A (en) * | 2013-10-29 | 2014-03-05 | 广东易事特电源股份有限公司 | A voltage detecting circuit for single batteries in a series storage battery set, a detecting method for the same, and a detecting device for the same |
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Effective date of registration: 20231227 Address after: A1903, Building 14, Zhonghaixin Innovation Industrial City, No. 12 Ganli 6th Road, Gankeng Community, Jihua Street, Longgang District, Shenzhen City, Guangdong Province, 518000 (one photo multi site enterprise) Patentee after: SHENZHEN ORICO TECHNOLOGIES Co.,Ltd. Address before: 410000 room 1101, building 8, Xincheng Science Park, No. 588, Yuelu West Avenue, high tech Development Zone, Changsha, Hunan Patentee before: Hunan rongchuang Technology Co.,Ltd. |
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