CN207380220U - A kind of single universal meter voltage and current benchmark sample circuit of integrative control - Google Patents

A kind of single universal meter voltage and current benchmark sample circuit of integrative control Download PDF

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Publication number
CN207380220U
CN207380220U CN201721560417.9U CN201721560417U CN207380220U CN 207380220 U CN207380220 U CN 207380220U CN 201721560417 U CN201721560417 U CN 201721560417U CN 207380220 U CN207380220 U CN 207380220U
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China
Prior art keywords
circuit
voltage
tie point
universal meter
current
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CN201721560417.9U
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Chinese (zh)
Inventor
刘桂利
邓振东
曹志文
朱立湘
尹志明
林军
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Huizhou Blueway Electronic Co Ltd
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Huizhou Blueway Electronic Co Ltd
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Priority to CN201721560417.9U priority Critical patent/CN207380220U/en
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Abstract

The utility model discloses a kind of single universal meter voltage and current benchmark sample circuits of integrative control, including master control borad circuit, several test board circuits and voltage and current reference sample circuit, master control borad circuit includes shared line, voltage tester circuit and testing current circuit;Each test board circuit includes input anode tie point, input cathode tie point, output head anode tie point, negative pole of output end tie point, sampled point anode tie point and sampled point cathode tie point, input anode tie point and output head anode tie point are connected with voltage tester circuit, input cathode tie point, negative pole of output end tie point and sampled point cathode tie point are connected with shared line, sampled point anode tie point is connected with testing current circuit, and relay is connected between master control borad circuit and test board circuit.The test of electric current and voltage reference when the utility model is for battery protecting plate managing electric quantity.

Description

A kind of single universal meter voltage and current benchmark sample circuit of integrative control
Technical field
The utility model is related to lithium battery technical field of measurement and test, and in particular to a kind of single universal meter voltage of integrative control Current reference sample circuit.
Background technology
The burning calibration verification of the managing electric quantity and current monitoring IC of lithium ion battery is required for through electric current, voltage reference Based on, but the acquisition of present electric current, voltage reference is strong there are limitation, the problems such as being not easy later maintenance extension.
Utility model content
The technical issues of the utility model solves is to propose that a kind of equipment is simple, voltage and current benchmark sampling easy to use Circuit.
To achieve the above object, the utility model provides a kind of single universal meter voltage and current benchmark sampling of integrative control Circuit, including master control borad circuit, several test board circuits and voltage and current reference sample circuit, the voltage and current reference Sample circuit is integrated in a test circuit, and the master control borad circuit includes shared line, voltage tester circuit and electric current and surveys Try circuit;Each test board circuit includes input anode tie point, input cathode tie point, output head anode connection Point, negative pole of output end tie point, sampled point anode tie point and sampled point cathode tie point, the input anode tie point and Output head anode tie point is connected with voltage tester circuit, the input cathode tie point, negative pole of output end tie point and Sampled point cathode tie point is connected with shared line, and the sampled point anode tie point is connected with testing current circuit, institute It states and is connected with relay between master control borad circuit and test board circuit;The voltage reference sample circuit and current reference sampling electricity Road shares a universal meter, shared connecting pin and the shared connection of the universal meter, the voltage tester end of the universal meter With voltage tester connection, testing current end and the testing current connection of the universal meter;The universal meter and voltage The connection of measurement circuit or the switching of testing current connection are carried out by relay.
Further, the voltage and current reference sample circuit integrate on one module.
Further, the relay is controlled by microcontroller.
Further, the universal meter is connected with computer communication, the computer control universal meter work and receive with Store the test result that universal meter is sent.
Further, it is connected with filter circuit between the voltage and current reference sample circuit and master control borad circuit.
Further, going back master control borad circuit includes resistance sampling test circuit, and the resistance sampling test circuit is used to survey Try the resistance value of NTC thermistor.
Further, several microcontroller strings are passed through between the voltage and current reference sample circuit and master control borad circuit Mouth connection.
Further, the voltage and current reference sample circuit share a communication serial port with master control borad circuit.
The advantageous effect that the utility model is realized mainly has the following:Electric current and voltage reference test share a general-purpose Table reduces the use of universal meter;By the switching of control voltage and testing current, and pass through microcontroller and control relay Device, control are got up more convenient;Universal meter is connected with computer, is controlled by computer and to computer transmitting test data, entirely Testing and control is more convenient, test result is easier to record.
Description of the drawings
Fig. 1 is the knot of the single universal meter voltage and current benchmark sample circuit of integrative control in the utility model embodiment one Structure schematic diagram;
A- input anode tie points, B- input cathode tie points, C- output head anode tie points, D- negative pole of output end Tie point, E- sampled point anode tie points, F- sampled point cathode tie points, L1- voltage tester circuits, L2- shared lines, L3- Testing current circuit, V- voltage testers end, GND- share connecting pin, I- testing currents end.
Reference sign:
Attached drawing is only for illustration, it is impossible to be interpreted as the limitation to this patent;It is attached in order to more preferably illustrate the present embodiment Scheme some components to have omission, zoom in or out, do not represent the size of actual product;To those skilled in the art, Some known features and its explanation may be omitted and will be understood by attached drawing;The same or similar label corresponds to same or similar Component;The terms describing the positional relationship in the drawings are only for illustration, it is impossible to be interpreted as the limitation to this patent.
Specific embodiment
In order to facilitate the understanding of those skilled in the art, below in conjunction with attached drawing and embodiment to the utility model into traveling One step is described in detail.
Embodiment one
Referring to Fig. 1, a kind of single universal meter voltage and current benchmark sample circuit of integrative control, including master control borad electricity Road, several test board circuits and voltage and current reference sample circuit, the voltage and current reference sample circuit are integrated in one In a test circuit, the master control borad circuit includes shared line L2, voltage tester circuit L1 and testing current circuit L3;Each institute Stating test board circuit includes input anode tie point A, input cathode tie point B, output head anode tie point C, output terminal Cathode tie point D, sampled point anode tie point E and sampled point cathode tie point F, the input anode tie point A and output Rectify pole tie point C be connected with voltage tester circuit L1, the input cathode tie point B, negative pole of output end tie point D and Sampled point cathode tie point F is connected with shared line L2, and the sampled point anode tie point E is connected with testing current circuit L3 Connect, relay be connected between the master control borad circuit and test board circuit, the relay has two-stage, as in figure K1, K2, K3 are the first order, and K4, K5 are the second level, during use according to test need to select the part for being closed the first order and the second level or Whole relays test the voltage of difference or electric current;The voltage reference sample circuit and current reference sample circuit share One universal meter, the shared connecting pin GND of the universal meter are connected with shared line L2, the voltage tester end V of the universal meter It is connected with voltage tester circuit L1, the testing current end I of the universal meter is connected with testing current circuit L3;The universal meter with The connection of voltage tester circuit or the switching of testing current connection are carried out by relay.
The voltage and current reference sample circuit integrate on one module, so entire test electric current is more stable can It leans on.Foregoing relay is controlled by microcontroller and switched, thereby using when control it is very convenient.The universal meter leads to computer News connection, the computer control universal meter work and receive and store the test result of universal meter transmission, calculated so as to pass through Machine controls entire test process, and draws the voltage of test, current data.The voltage and current reference sample circuit and master control Filter circuit is connected between plate circuit, the voltage, current data so as to test are more accurate.Also master control borad circuit is adopted including resistance Sample test circuit, the resistance sampling test circuit are used to test the resistance value of NTC thermistor, so as to pass through temperature-sensitive electricity The resistance value of resistance converses current environment temperature.The communication baud rate 57600bit/s of the computer and master control borad, the electricity It is connected between pressure and current reference sample circuit and master control borad circuit by several microcontroller serial ports, so as to quickly drive Switching control universal meter is connected, universal meter is allowed to connect rapidly and turns on some test circuit,.The voltage and current reference sampling Circuit shares a communication serial port with master control borad circuit, so as to reduce extended serial port, mitigates the operating load of computer.
Referring to Fig. 1, the test circuit of the utility model is for the managing electric quantity of battery protecting plate and current monitoring IC When voltage, current sample, the input anode B+ of battery protection panel products, negative pole of output end B-, output terminal P+, output terminal are born Pole P-, intend sampled point anode I+ and intend sampled point cathode I- respectively with input anode tie point A, input cathode tie point B, Output head anode tie point C, negative pole of output end tie point D, sampled point anode tie point E are connected with sampled point cathode tie point F, Then disconnection and the closure of different relays are controlled by microcontroller to select to test the voltage and current of different circuits, passes through meter Calculation machine controls and the data of read test, draws reference voltage and current value.
Obviously, above-described embodiment of the utility model is only intended to clearly illustrate the utility model example, and It is not the restriction to the embodiment of the utility model.For those of ordinary skill in the art, in above description On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments It is exhaustive.All any modification, equivalent and improvement made within the spirit and principle of the utility model etc., should be included in Within the protection domain of the utility model claims.

Claims (8)

1. a kind of single universal meter voltage and current benchmark sample circuit of integrative control, it is characterised in that:Including master control borad circuit, Several test board circuits and voltage and current reference sample circuit, the voltage and current reference sample circuit are integrated in a survey It tries on circuit, the master control borad circuit includes shared line(L2), voltage tester circuit(L1)With testing current circuit(L3);Respectively The test board circuit includes input anode tie point(A), input cathode tie point(B), output head anode tie point (C), negative pole of output end tie point(D), sampled point anode tie point(E)With sampled point cathode tie point(F), it is described input rectify Pole tie point(A)With output head anode tie point(C)With voltage tester circuit(L1)It is connected, the input cathode tie point (B), negative pole of output end tie point(D)With sampled point cathode tie point(F)With shared line(L2)It is connected, the sampled point is just Pole tie point(E)With testing current circuit(L3)It is connected, relay is connected between the master control borad circuit and test board circuit Device;The voltage reference sample circuit and current reference sample circuit share a universal meter, the shared connection of the universal meter End(GND)With shared line(L2)Connection, the voltage tester end of the universal meter(V)With voltage tester circuit(L1)Connection, institute State the testing current end of universal meter(I)With testing current circuit(L3)Connection;The connection of the universal meter and voltage tester circuit Or the switching of testing current connection is carried out by relay.
2. the single universal meter voltage and current benchmark sample circuit of integrative control according to claim 1, it is characterised in that: The voltage and current reference sample circuit integrate on one module.
3. the single universal meter voltage and current benchmark sample circuit of integrative control according to claim 2, it is characterised in that: The relay is controlled by microcontroller.
4. the single universal meter voltage and current benchmark sample circuit of integrative control according to claim 1, it is characterised in that: The universal meter is connected with computer communication, and the computer controls universal meter to work and receives and store the survey of universal meter transmission Test result.
5. the single universal meter voltage and current benchmark sample circuit of integrative control according to claim 1, it is characterised in that: Filter circuit is connected between the voltage and current reference sample circuit and master control borad circuit.
6. the single universal meter voltage and current benchmark sample circuit of integrative control according to claim 1, it is characterised in that: Also master control borad circuit includes resistance sampling test circuit, and the resistance sampling test circuit is used to test the resistance of NTC thermistor Value.
7. according to the single universal meter voltage and current benchmark sample circuit of claim 1 ~ 6 any one of them integrative control, It is characterized in that:It is connected between the voltage and current reference sample circuit and master control borad circuit by several microcontroller serial ports.
8. the single universal meter voltage and current benchmark sample circuit of integrative control according to claim 7, it is characterised in that: The voltage and current reference sample circuit share a communication serial port with master control borad circuit.
CN201721560417.9U 2017-11-21 2017-11-21 A kind of single universal meter voltage and current benchmark sample circuit of integrative control Active CN207380220U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721560417.9U CN207380220U (en) 2017-11-21 2017-11-21 A kind of single universal meter voltage and current benchmark sample circuit of integrative control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721560417.9U CN207380220U (en) 2017-11-21 2017-11-21 A kind of single universal meter voltage and current benchmark sample circuit of integrative control

Publications (1)

Publication Number Publication Date
CN207380220U true CN207380220U (en) 2018-05-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721560417.9U Active CN207380220U (en) 2017-11-21 2017-11-21 A kind of single universal meter voltage and current benchmark sample circuit of integrative control

Country Status (1)

Country Link
CN (1) CN207380220U (en)

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