CN209373075U - A kind of battery measuring device - Google Patents
A kind of battery measuring device Download PDFInfo
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- CN209373075U CN209373075U CN201821717422.0U CN201821717422U CN209373075U CN 209373075 U CN209373075 U CN 209373075U CN 201821717422 U CN201821717422 U CN 201821717422U CN 209373075 U CN209373075 U CN 209373075U
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Abstract
The utility model discloses provide a kind of battery measuring device, including the mesuring battary group being composed in series by multiple batteries, multichannel measurement circuit and a SCM system, the cathode node output end of the mesuring battary group is connected with the sampling input terminal that the cathode node of every batteries is separately connected measuring circuit all the way, the common of each road measuring circuit is connect with the negative pole node of the negative pole node output end of mesuring battary group and the batteries respectively, the output end of each road measuring circuit passes through output terminal respectively and the measurement input terminal of SCM system connects, the SCM system carries out detection processing to the voltage that measuring circuit exports using STM32 single-chip minimum system.The measuring device of the utility model not only ensure that the being relatively isolated property of power source supplying voltage and the battery sampling accuracy of the node, but also can simultaneously wear the information of voltage of multiple batteries and be delivered to single-chip microcontroller, ensure that the rapidity of sampling.
Description
Technical field
The utility model belongs to battery detection equipment technical field more particularly to a kind of battery measuring device.
Background technique
Battery test apparatus is a kind of device that real-time, perfect detection and management are carried out for power-supply system battery,
It has the advantage that and is controlled using single-chip microcontroller, intelligentized design, system setting is flexibly and easily；High pressure, low pressure isolation design guarantee
System is safe and reliable；Life of product is long；Measurement accuracy is high, therefore is widely used to the correlations such as electric power, communication, traffic, automobile
In the management of the power energy-storage battery of industry.However, being simultaneously at present when being disposably acquired to multiple battery voltages
All cell voltages are acquired, but acquire that accuracy when multiple battery voltages measure is not high enough, stability is bad simultaneously,
Easy to connect, use is inflexible, succinct.
Utility model content
The purpose of this utility model is to provide a kind of battery measuring device, the measuring device of the utility model both be ensure that
The being relatively isolated property of power source supplying voltage and the battery sampling accuracy of the node, and can be simultaneously by the information of voltage of multiple batteries
It wears and is delivered to single-chip microcontroller, ensure that the rapidity of sampling.To achieve the goals above, the utility model uses following technical effect:
According to the one aspect of this hair utility model, the mesuring battary including being composed in series by several batteries is provided
Group, multichannel measurement circuit and a SCM system, two end segments of the mesuring battary group that several batteries form after being serially connected
Point is respectively equipped with cathode node output end and negative pole node output end, and two end nodes of every batteries are respectively cathode node and bear
Pole node, wherein when the cathode node of previous batteries and the negative pole node of next batteries are connected with each other, if thus by main line
Battery and measuring circuit and SCM system are connected in series in cathode node output end and negative pole node output end by bus
Between, the cathode node output end of the mesuring battary group and the cathode node of every batteries are separately connected measuring circuit all the way
Sample input terminal connection, the common of each road measuring circuit respectively with the negative pole node output end of mesuring battary group and the section
The negative pole node of battery connects, and the output end of each road measuring circuit is connect with the measurement input terminal of SCM system respectively.
Preferably, each road measuring circuit includes power conversion module and isolation sampling module, the anode section of every batteries
Point is connected with the sampling input terminal that sampling module is isolated, the public affairs of the negative pole node of batteries isolation sampling module corresponding with this
Common ground connection, the anode of the power input of the power conversion module and the cathode node of the batteries or next batteries
The output end of node connection, the isolation sampling module is connect with the measurement input terminal of institute's SCM system, the power supply
The power output end of conversion module respectively with the power input of the power input that sampling module is isolated and SCM system
End connection.
Preferably, the isolation sampling module includes voltage sampling circuit, voltage isolation circuit and voltage amplifier circuit, institute
The electrode input end for stating voltage sampling circuit is connect with the cathode node of the battery, the cathode input of the voltage sampling circuit
End is connect with the negative pole node of the battery, and the output end of the voltage sampling circuit passes through voltage isolation circuit and voltage amplification electricity
Road is connect with the measurement input terminal of the SCM system, power input, the voltage isolation circuit of the voltage sampling circuit
Power input and the power input of voltage amplifier circuit connect respectively with the power output end of the power conversion module.
Preferably, the voltage sampling circuit includes resistance R1, resistance R2, resistance R3, capacitor C1 and the first operation amplifier
Device U1, the voltage isolation circuit include HCNR200 precision photoelectric coupler U2, the voltage amplifier circuit include resistance R4,
The cathode node N+ connection of one end and battery of resistance R5, resistance R6 and second operational amplifier U3, the resistance R1, the electricity
Hinder the other end negative input and HCNR200 linear photoconductor with one end of capacitor C1, the first operational amplifier U1 respectively of R1
The third pin of coupler U2 connects, and the electrode input end of the first operational amplifier U1 passes through resistance R2 and the batteries
Negative pole node connection, the output end of the first operational amplifier U1 respectively with the other end of the capacitor C1 and resistance R3
One end connection, the other end of resistance R3 are connect with the second pin of HCNR200 precision photoelectric coupler U2, the HCNR200
The 4th pin of precision photoelectric coupler U2 is connect with the negative pole node N- of the batteries, the HCNR200 linear photoconductor coupling
The 6th pin of device U2 is connect with one end of resistance R4, the 6th pin and resistance of the HCNR200 precision photoelectric coupler U2
One end of R4 connects, and the other end of the resistance R4 connects with the cathode of one end of resistance R5 and second operational amplifier U3 respectively
Connect, the output end of second operational amplifier U3 with respectively with the measurement input terminal of the other end of resistance R5 and SCM system connect
It connects, the electrode input end of the output end of the second operational amplifier U3 is connect with one end of resistance R6, and the resistance R6's is another
The ground terminal of one end, the 5th pin of HCNR200 precision photoelectric coupler U2 and SCM system is connected to ground, and the power supply turns
Change the mold the power output end of block respectively with the power end of the first operational amplifier U1, HCNR200 precision photoelectric coupler U2 the
One pin, the power end of second operational amplifier U3 are connected with the power end of SCM system.
Preferably, the SCM system uses STM32 single-chip minimum system.
In conclusion the utility model has following technical effect that since the utility model uses above-mentioned technical proposal
The multi-point monitoring of accumulator battery voltage may be implemented in the utility model, eliminates survey crew's plug connecting terminal
Process only needs simply to connect the battery meter with battery group, substantially increases battery detecting efficiency.The utility model
Battery meter sampling measured using multi-channel A/D built in single-chip microcontroller, for the measurement side of single channel A/D and switching switch
Method is compared, have conversion speed faster, precision is higher, stability is more preferable, the service life is longer.The battery of the utility model measures
Instrument also uses linear optical coupling isolation, using the voltage of battery pack difference node as power supply, while using respective battery
The battery of ground of the node as corresponding isolation sampling module, the being relatively isolated property that both ensure that power source supplying voltage and the node is adopted
Sample accuracy, and the information of voltage of multiple batteries can be worn simultaneously and be delivered to single-chip microcontroller, it ensure that the rapidity of sampling.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of battery measuring device of the utility model；
Fig. 2 is a kind of physical circuit figure of battery measuring device of the utility model.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, referring to the drawings and enumerate excellent
Embodiment is selected, the utility model is further described.However, it is necessary to illustrate, many details listed in specification
It is specific even without these just for the sake of making reader have a thorough explanation to the one or more aspects of the utility model
Details also may be implemented the utility model these aspect.
As shown in Figure 1, providing a kind of battery measuring device, including by more according to the one aspect of this hair utility model
Mesuring battary group, multichannel measurement circuit and the SCM system that batteries are composed in series, the anode of the mesuring battary group
The cathode node N+1 of node output terminals A and every batteries is separately connected the sampling input terminal BAT of measuring circuit all the wayNConnection, often
The common GND of measuring circuit all the wayNRespectively with the cathode section of the negative pole node output end B of mesuring battary group and the batteries
Point N-1 connection, the output end of each road measuring circuit pass through the measurement input terminal AD of output terminal and SCM system respectivelyNEven
It connects, the SCM system carries out detection processing to the voltage that measuring circuit exports using STM32 single-chip minimum system.It is each
Road measuring circuit include power conversion module and isolation sampling module, the cathode node N+ of every batteries with sampling module is isolated
Sample input terminal BATNConnection, the common GND of the negative pole node N-1 of batteries isolation sampling module corresponding with thisN
The cathode node N+ of connection, the power input of the power conversion module and the cathode node of the batteries or next batteries
1 connection, the output end of the isolation sampling module and the measurement input terminal AD of institute's SCM systemNConnection, the power supply
The power output end of conversion module respectively with the power input of the power input that sampling module is isolated and SCM system
End connection；The isolation sampling module includes voltage sampling circuit, voltage isolation circuit and voltage amplifier circuit, and the voltage is adopted
The electrode input end of sample circuit is connect with the cathode node N+1 of the battery, the negative input of the voltage sampling circuit with
The output end of the negative pole node N-1 connection of the battery, the voltage sampling circuit passes through voltage isolation circuit and voltage amplification electricity
The measurement input terminal AD on road and the SCM systemNConnection, power input, the voltage isolation electricity of the voltage sampling circuit
The power input on road and the power input of voltage amplifier circuit connect with the power output end of the power conversion module respectively
It connects.
In the present invention, as shown in connection with fig. 1, high-pressure area and area of low pressure can be isolated for the isolation sampling module
It comes, the high-pressure area and mesuring battary have the circuit of electrical connection, and the area of low pressure is and single-chip microcontroller has electrical connection
Circuit, two end nodes of mesuring battary group after several batteries are serially connected are respectively cathode node output terminals A and cathode
Node output end B, two end nodes of every batteries are respectively cathode node N+1 and negative pole node N-1, wherein when previous batteries
Cathode node N+1 and the negative pole node N-1 of next batteries be connected with each other, if thus will main line battery and measuring circuit with
SCM system is connected in series between cathode node output terminals A and negative pole node output end B by bus, so as to electricity
The electricity in pond carries out rapid survey, and the cathode node N of the N section mesuring battary of the mesuring battary group of the high-pressure area is connected to
The sampled point BAT of the corresponding measuring circuit of the batteriesN, the negative pole node N-1 of the n-th batteries of the mesuring battary group at this time
It is connected to the publicly GND of measuring circuit NN.The node N+1 connection measuring circuit of the N+1 batteries of the mesuring battary group
Power conversion module power input VCCN.The power input VCC of power conversion module in a wordNThe voltage of input is greater than
Equal to the voltage of n-th batteries, it is typically connected to the cathode node output terminals A of mesuring battary group, the N+1 saves mesuring battary
Cathode node N+1 be connected to the sampled point BAT of the road N+1 measuring circuitN+1.The cathode section of the N+1 section mesuring battary
Point N-1 is connected to the publicly GND of the road N+1 measuring circuitN+1, the cathode node N+1 connection of the N+2 section mesuring battary
The power input VCC of the power conversion module of the road N+2 measuring circuitN+2, and so on.The battery of the utility model measures
The public identical power supply VCC of the output par, c of all isolation sampling modules of device0With ground GND0And use battery pack difference section
The voltage of point is as power supply, and the ground using respective battery node as corresponding isolation sampling module simultaneously, is guaranteeing electricity
Under the premise of the being relatively isolated property of source supply voltage and the battery sampling accuracy of the node, high pressure and area of low pressure is successfully isolated,
Single-chip microcontroller can be used to acquire the information of voltage of multiple batteries simultaneously again, sample rate is exceedingly fast, and has great meaning to the maintenance of battery
Justice.
In the present invention, combined with Figure 1 and Figure 2, when acquiring a certain batteries, the voltage sampling circuit includes electricity
Hindering R1, resistance R2, resistance R3, capacitor C1 and the first operational amplifier U1, the voltage isolation circuit includes HCNR200 linear light
Electric coupler U2, the voltage amplifier circuit include resistance R4, resistance R5, resistance R6 and second operational amplifier U3, the electricity
One end of R1 and the cathode node N+1 connection of battery are hindered, the other end of the resistance R1 is transported with one end of capacitor C1, first respectively
The negative input for calculating amplifier U1 is connected with the third pin of HCNR200 precision photoelectric coupler U2, and first operation is put
The electrode input end of big device U1 is connect by resistance R2 with the negative pole node N of the batteries, the first operational amplifier U1's
Output end is connect with one end of the other end of the capacitor C1 and resistance R3 respectively, the other end and HCNR200 line of resistance R3
Property photoelectrical coupler U2 second pin connection, the 4th pin and the batteries of the HCNR200 precision photoelectric coupler U2
Negative pole node N-1 connection, the 6th pin of the HCNR200 precision photoelectric coupler U2 connect with one end of resistance R4, institute
The 6th pin for stating HCNR200 precision photoelectric coupler U2 is connect with one end of resistance R4, the other end difference of the resistance R4
Connect with the cathode of one end of resistance R5 and second operational amplifier U3, the output end of second operational amplifier U3 with respectively with electricity
Hinder the other end of R5 and the measurement input terminal AD of SCM systemNConnection, the output end of the second operational amplifier U3 is just
Pole input terminal is connect with one end of resistance R6, and the 5th of the other end of the resistance R6, HCNR200 precision photoelectric coupler U2 the
The ground terminal of pin and SCM system is connected to ground, and the power output end of the power conversion module is put with the first operation respectively
The power end and list of the power end of device U1, the first pin of HCNR200 precision photoelectric coupler U2, second operational amplifier U3 greatly
The power end of piece machine system connects；The low-pass filter being made of the first operational amplifier U1, is coupled by HCNR200 linear photoconductor
Device U2 forms isolation circuit, forms amplifying circuit by second operational amplifier U3.The power input VCC of power conversion moduleN
Forward voltage is provided for operational amplifier and photoelectrical coupler and SCM system, the negative pole node N-1 of battery is the first fortune
It calculates amplifier U1, HCNR200 precision photoelectric coupler U2 and input signal is provided with reference to ground, acquire the input signal of mesuring battary
Into the first operational amplifier U1 form low-pass filter, then by HCNR200 precision photoelectric coupler U2 enter end isolation with
The signal of feedback, the output end output of HCNR200 precision photoelectric coupler U2 accesses second operational amplifier U3, and the second operation is put
The power input and ground terminal of big device U3 and SCM system can be provided by outside can also be with the power supply of practical isolation circuit
And ground terminal, the analog signals AD of second operational amplifier U3 outputNIt exports to the measurement input terminal AD of SCM systemN.Through
It crosses the A/D converter built in SCM system and carries out conversion process, export real-time battery detecting amount, this battery meter is real
The acquisition to multiple battery voltages is showed, measuring accuracy is high, stability is good, safe and reliable, and easy to connect, use is cleverer
It is living, succinct.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, can also make several improvements and retouch, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (5)
1. a kind of battery measuring device, it is characterised in that: mesuring battary group, multichannel including being composed in series by several batteries are surveyed
Amount circuit and a SCM system, two end nodes of the mesuring battary group that several batteries form after being serially connected are respectively equipped with
Cathode node output end and negative pole node output end, two end nodes of every batteries are respectively cathode node and negative pole node,
In when previous batteries cathode node and next batteries negative pole node be connected with each other, if thus by main line battery and survey
Amount circuit and SCM system be connected in series between cathode node output end and negative pole node output end by bus, it is described to
The cathode node of the cathode node output end and every batteries of surveying battery pack is separately connected the sampling input terminal of measuring circuit all the way
Connection, the common of each road measuring circuit respectively with the negative pole node output end of mesuring battary group and the cathode of the batteries
Node connection, the output end of each road measuring circuit are connect with the measurement input terminal of SCM system respectively.
2. a kind of battery measuring device according to claim 1, it is characterised in that: each road measuring circuit includes that power supply turns
Block and isolation sampling module are changed the mold, the cathode node of every batteries is connected with the sampling input terminal that sampling module is isolated, the economize on electricity
The common connection of the negative pole node in pond isolation sampling module corresponding with this, the power input of the power conversion module
Connect with the cathode node of the cathode node of the batteries or next batteries, it is described isolation sampling module output end with it is described
The measurement input terminal of institute's SCM system connects, and sampling mould is isolated with described respectively in the power output end of the power conversion module
The power input of block is connected with the power input of SCM system.
3. a kind of battery measuring device according to claim 2, it is characterised in that: the isolation sampling module includes voltage
Sample circuit, voltage isolation circuit and voltage amplifier circuit, the electrode input end of the voltage sampling circuit and the battery
Cathode node connection, the negative input of the voltage sampling circuit are connect with the negative pole node of the battery, the voltage sample
The output end of circuit is connect by voltage isolation circuit and voltage amplifier circuit with the measurement input terminal of the SCM system, institute
State the power input of the power input of voltage sampling circuit, the power input of voltage isolation circuit and voltage amplifier circuit
It is connect respectively with the power output end of the power conversion module.
4. a kind of battery measuring device according to claim 3, it is characterised in that: the voltage sampling circuit includes resistance
R1, resistance R2, resistance R3, capacitor C1 and the first operational amplifier U1, the voltage isolation circuit include HCNR200 linear photoconductor
Coupler U2, the voltage amplifier circuit include resistance R4, resistance R5, resistance R6 and second operational amplifier U3, the resistance
One end of R1 and the cathode node N+ connection of battery, the other end of the resistance R1 respectively with one end of capacitor C1, the first operation
The negative input of amplifier U1 is connected with the third pin of HCNR200 precision photoelectric coupler U2, first operation amplifier
The electrode input end of device U1 is connect by resistance R2 with the negative pole node of the batteries, the output of the first operational amplifier U1
End is connect with one end of the other end of the capacitor C1 and resistance R3 respectively, the other end and HCNR200 linear light of resistance R3
The second pin of electric coupler U2 connects, the 4th pin of the HCNR200 precision photoelectric coupler U2 and bearing for the batteries
6th pin of pole node N- connection, the HCNR200 precision photoelectric coupler U2 is connect with one end of resistance R4, described
The 6th pin of HCNR200 precision photoelectric coupler U2 is connect with one end of resistance R4, the other end of the resistance R4 respectively with
One end of resistance R5 is connected with the cathode of second operational amplifier U3, the output end of second operational amplifier U3 with respectively with resistance
The other end of R5 is connected with the measurement input terminal of SCM system, the anode input of the output end of the second operational amplifier U3
End is connect with one end of resistance R6, the 5th pin and list of the other end of the resistance R6, HCNR200 precision photoelectric coupler U2
The ground terminal of piece machine system is connected to ground, and the power output end of the power conversion module is respectively with the first operational amplifier U1's
Power end, the first pin of HCNR200 precision photoelectric coupler U2, second operational amplifier U3 power end and SCM system
Power end connection.
5. a kind of battery measuring device described in -4 any claims according to claim 1, it is characterised in that: the single-chip microcontroller
System uses STM32 single-chip minimum system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821717422.0U CN209373075U (en) | 2018-10-23 | 2018-10-23 | A kind of battery measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821717422.0U CN209373075U (en) | 2018-10-23 | 2018-10-23 | A kind of battery measuring device |
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| CN209373075U true CN209373075U (en) | 2019-09-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426963A (en) * | 2020-04-20 | 2020-07-17 | 上海和宗焊接设备制造有限公司 | Electric quantity sampling and measuring system of battery welding machine and testing method thereof |
| CN112327196A (en) * | 2020-10-20 | 2021-02-05 | 西安工程大学 | Circuit and method for detecting voltage of single battery of series battery pack through linear optocoupler |
| CN113466732A (en) * | 2021-06-28 | 2021-10-01 | 广西电网有限责任公司贵港供电局 | Battery measuring circuit and battery measuring instrument |
| CN113712022A (en) * | 2021-08-23 | 2021-11-30 | 广西电网有限责任公司贵港供电局 | Contact type micro-current bird repelling method and system |
-
2018
- 2018-10-23 CN CN201821717422.0U patent/CN209373075U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426963A (en) * | 2020-04-20 | 2020-07-17 | 上海和宗焊接设备制造有限公司 | Electric quantity sampling and measuring system of battery welding machine and testing method thereof |
| CN112327196A (en) * | 2020-10-20 | 2021-02-05 | 西安工程大学 | Circuit and method for detecting voltage of single battery of series battery pack through linear optocoupler |
| CN113466732A (en) * | 2021-06-28 | 2021-10-01 | 广西电网有限责任公司贵港供电局 | Battery measuring circuit and battery measuring instrument |
| CN113712022A (en) * | 2021-08-23 | 2021-11-30 | 广西电网有限责任公司贵港供电局 | Contact type micro-current bird repelling method and system |
| CN113712022B (en) * | 2021-08-23 | 2023-05-05 | 广西电网有限责任公司贵港供电局 | Contact type micro-current bird repelling method and system |
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