CN111693903A - Battery collection wire harness error-proofing detection circuit and wire harness detector - Google Patents
Battery collection wire harness error-proofing detection circuit and wire harness detector Download PDFInfo
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- CN111693903A CN111693903A CN202010442023.3A CN202010442023A CN111693903A CN 111693903 A CN111693903 A CN 111693903A CN 202010442023 A CN202010442023 A CN 202010442023A CN 111693903 A CN111693903 A CN 111693903A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 10
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- 239000003990 capacitor Substances 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 7
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- 238000004891 communication Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
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Abstract
The application relates to a battery pack monitoring and management system, in particular to a battery collection wiring harness error-proofing detection circuit and a wiring harness detector. A battery acquisition harness error-proofing detection circuit is characterized in that a cathode of a voltage stabilizing diode D1 is connected with a battery B +, an anode of the voltage stabilizing diode D1 is connected with a G pole of an N-type MOS tube Q1 after being connected with a resistor R1 in series; the cathode of the diode D2 is connected with the battery B-, the resistor R2 is connected with the voltage stabilizing diode D3 in parallel, and the anode is connected with the anode of the diode D2; the D pole of the N-type MOS transistor Q1 is connected with the G pole of the N-type MOS transistor Q2, the S poles of the N-type MOS transistor Q1 and the N-type MOS transistor Q2 are connected with the anode of a diode D2, and a resistor R4 and a capacitor C1 are connected in parallel with the GS pole of the N-type MOS transistor Q2; one end of the resistor R5 is connected with the battery B +, and the other end is connected with the anode of the LED1 in series and then is connected with a D pole loop of the N-type MOS transistor Q2; and finally, one end of the resistor R3 is connected with B +, and the other end is connected with the G pole of the N-type MOS transistor Q2 to be used as a bias. And the abnormity is eliminated by reminding installation or debugging personnel to further search the wiring condition of the wiring harness in time.
Description
Technical Field
The application relates to a battery pack monitoring and management system, in particular to a battery collection wiring harness error-proofing detection circuit and a wiring harness detector.
Background
Whether it is a power substation, a communication/IDC room, a communication base station, a railway/rail traffic signal system, or an Uninterruptible Power Supply (UPS), the storage battery plays an extremely important role in the system as a backup power supply. Therefore, the battery pack generally requires a battery pack monitoring management module based on the requirements of reliability and safety of operation of the battery pack. The battery pack is connected with the battery pack monitoring and management module through the acquisition wiring harness, and the battery pack monitoring and management module realizes a series of functions such as voltage acquisition of the battery through the acquisition wiring harness.
When the number of the batteries connected in series in the battery pack is larger, the number of the wires of the collecting wire harness is increased, and the probability of problems is increased. If the wiring harness is dislocated, the acquisition error can be directly caused, and the monitoring management module and even the battery pack can be damaged in serious conditions. Especially, when the battery monitoring management module with the internal resistance test function performs the internal resistance test, the MOSFET is burned out due to overhigh power, voltage and the like. Due to the reasons of battery pack design, the number of battery packs, field environment layout, battery pack monitoring management module interfaces and the like, the acquisition wiring harness is generally manufactured or installed on the field at present, and although management and control can be performed by adopting identification, process, installation specifications and the like, the problem of error during manual operation cannot be completely avoided.
Disclosure of Invention
In order to solve the technical problem, the application aims to provide a battery collection harness mistake-proofing detection circuit which can be simplified by using light-emitting diode simulation, and the light-emitting tubes corresponding to the number of the nodes on the detector are bright under the normal condition of a line sequence. When the line sequence in the acquisition line is staggered, the light-emitting diode is not bright. And the abnormity is eliminated by reminding installation or debugging personnel to further search the wiring condition of the wiring harness in time.
In order to achieve the above object, the present application adopts the following technical solutions:
a battery collection harness error proofing detection circuit, comprising: a voltage stabilizing diode D1, a diode D2, a voltage stabilizing diode D3, an N-type MOS tube Q1, an N-type MOS tube Q2, an LED, a capacitor C1 and resistors R1-R5;
the cathode of the voltage-stabilizing diode D1 is connected with a battery B +, the anode of the voltage-stabilizing diode D1 is connected with a resistor R1 in series and then is connected with the G pole of an N-type MOS transistor Q1; the cathode of the diode D2 is connected with the battery B-, the resistor R2 is connected with the voltage stabilizing diode D3 in parallel, and the anode is connected with the anode of the diode D2;
the D pole of the N-type MOS transistor Q1 is connected with the G pole of the N-type MOS transistor Q2, the S poles of the N-type MOS transistor Q1 and the N-type MOS transistor Q2 are connected with the anode of a diode D2, and a resistor R4 and a capacitor C1 are connected in parallel with the GS pole of the N-type MOS transistor Q2;
one end of the resistor R5 is connected with the battery B +, and the other end is connected with the anode of the LED1 in series and then is connected with a D pole loop of the N-type MOS transistor Q2;
and finally, one end of the resistor R3 is connected with B +, and the other end is connected with the G pole of the N-type MOS transistor Q2 to be used as a bias.
The application also provides a pencil detector for detecting battery guardianship management module battery line, and the detector includes n detection circuitry and the terminal that corresponds n battery festival number constitute, detection circuitry connects each section battery through the terminal respectively, and n is the positive integer.
By adopting the technical scheme, the detection circuit can be simplified by using the light-emitting diode simulation, and the light-emitting tubes corresponding to the number of the nodes on the detector are bright under the normal line sequence condition. When the line sequence in the acquisition line is staggered, the light-emitting diode is not bright. Through the mode, installation or debugging personnel are reminded to further search the wiring condition of the wiring harness in time, and abnormity is eliminated.
Drawings
Fig. 1 is a schematic circuit structure diagram of the wire harness detector of the present application.
Fig. 2 is a schematic circuit diagram of the detection circuit of the present application.
Fig. 3 is a schematic diagram of a usage status of the detection circuit of the present application.
Detailed Description
The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings.
As shown in fig. 1, the wire harness detector for detecting the battery connection of the battery monitoring management module comprises 5 detection circuits and terminals corresponding to 5 battery sections, wherein the detection circuits are respectively connected with the batteries through the terminals, and the terminals are female terminals.
A battery collection harness fault-proofing detection circuit as shown in fig. 2, the detection circuit comprising: a zener diode D1, a diode D2, a zener diode D3, an N-type MOS transistor Q1, an N-type MOS transistor Q2, an LED, a capacitor C1 and resistors R1-R5.
The list of devices (taking a 12V battery test harness as an example) is as follows:
as shown in fig. 2, the cathode of the zener diode D1 is connected to the battery B +, and the anode is connected to the resistor R1 in series and then connected to the G electrode of the N-type MOS transistor Q1; the cathode of the diode D2 is connected with the battery B-, the resistor R2 is connected with the voltage stabilizing diode D3 in parallel, and the anode is connected with the anode of the diode D2; the D pole of the N-type MOS transistor Q1 is connected with the G pole of the N-type MOS transistor Q2, the S poles of the N-type MOS transistor Q1 and the N-type MOS transistor Q2 are connected with the anode of a diode D2, and a resistor R4 and a capacitor C1 are connected in parallel with the GS pole of the N-type MOS transistor Q2; one end of the resistor R5 is connected with the battery B +, and the other end is connected with the anode of the LED1 in series and then is connected with a D pole loop of the N-type MOS transistor Q2; finally, one end of the resistor R3 is connected with B +, and the other end is connected with the G pole of the N-type MOS tube Q2 as a bias.
In this application, zener diode D1 is when gathering the pencil mistake and leading to the test voltage too high, judge usefulness as the protection when exceeding the rated value. The voltage-stabilizing tube with the corresponding value is selected according to the difference of the voltage of the acquisition wire harness of the 6V battery pack and the 12V battery pack, if the 12V battery pack acquisition wire harness is detected in the row, the voltage-stabilizing tube is selected from 15V.
The voltage stabilizing diode D3 clamps GS of the N-type MOS transistor Q1, and prevents GS overvoltage damage of the N-type MOS transistor Q1 possibly caused by acquisition line errors.
Diode D2 serves here as protection against reverse connection. When the battery is connected in a wrong way, so that the input voltage is reversed, the circuit does not work in a high-resistance state because of the unidirectional conductivity of the diode, and the indicator light is not turned on.
The Q1 and the Q2 are selected according to the corresponding battery voltage grades, and the resistance values are selected according to the starting voltages of Q1 and Q2.
Resistors R1, R2, R3 and R4 respectively provide bias voltage for an N-type MOS transistor Q1 and an N-type MOS transistor Q2; the relation among R3, R4 and N-type MOS transistor Q2 is as follows: assuming that the lower limit of the cell voltage is U2, and the threshold voltage of the N-type MOS transistor Q2 is Vgs _2, Vgs _2 is U2 × R4/(R3+ R4).
For example, when the 12V battery collection harness error-proofing detection circuit is used, the lower limit voltage U2 of the 12V battery cell is 9V, the typical turn-on voltage of the N-type MOS transistor Q1 is 2V, R3 is 200K, and R4 is 57K.
For example, when the 6V battery collection harness fault-prevention detection circuit is used, the values of R1, R2, R3 and R5 are 0.5 times of the corresponding resistance value of the 12V battery collection harness fault-prevention detection circuit, the lower limit voltage U2 of the 6V battery cell is 4V, the typical starting voltage of the N-type MOS transistor Q1 is 2V, R3 is 100K, and R4 is 100K. The regulator tube D1 in the rest devices needs to select a new model, which is generally based on the protection upper limit value corresponding to the battery grade, such as the 6V battery protection value of 9V, and under the condition that the selection of the Q1, R1 and R2 is determined, the voltage regulation value of D1 is about 5V, and the model number of ZMM5V1 can be selected.
The N-type MOS transistor Q1 and the N-type MOS transistor Q2 are for comparison switching.
The capacitor C1 plays a role of filtering, so as to prevent the GS electrode of the N-type MOS transistor Q2 from being disturbed and abnormally conducted.
LE D1 is an indicator light, when the harness fault indicator light is not on,
the resistor R5 is the current limiting resistor of the light emitting tube.
The detection circuit shown in fig. 2, taking the detection of a 12V battery harness as an example, operates as follows:
when the input voltage is greater than 18V, the zener diode D1 breaks down and conducts, the VGS voltage of the N-type MOS transistor Q1 is divided by about 2V through the zener diodes D1, R1, and R2, and the turn-on voltage of the N-type MOS transistor Q1 is met, the VGS voltage of the N-type MOS transistor Q2 is pulled low, the N-type MOS transistor Q2 is in a turn-off state, and the light-emitting indicator lamp is not conducted and therefore is not lit.
When the input voltage is less than 8V, the zener diode D1 is not turned on, the VGS voltage of the N-type MOS transistor Q1 is about 0.2V, which does not satisfy the turn-on voltage of the transistor, so the N-type MOS transistor Q2 is in the turn-off state, the VGS voltage of the N-type MOS transistor Q2 is divided by R3 and R4 to be about 2V, which does not satisfy the turn-on voltage of the N-type MOS transistor Q2 of 2.2V, the N-type MOS transistor Q2 is in the turn-off state, and the light-emitting indicator lamp is not lit.
When the sequence of the wiring harness is normal, the voltage of B & lt + & gt and the voltage of B & lt- & gt are 12V, the voltage of D1 does not reach the regulated nominal value and is in a high-impedance state, Q1 does not meet the 2V starting condition, the voltage division value of R3 and R4 is 2.4V at the moment, the Q2 starting condition is met, and therefore the LED is conducted to emit light.
In conclusion, when the actual voltage is between 8V and 18V, the inspection indicator lamp is lightened; below or above this range, the test indicator lights are not illuminated.
The test harness board can be expanded according to the number of the sections of the collection harnesses.
The circuit does not need an additional power supply to supply power, and the circuit is successfully used for a BMM4.2 module test line.
As shown in FIG. 3, the detection circuit detects B1+ and B1-, B2+ and B2-, B3+ and B3-, B4+ and B4-, B5+ and B5-, and so on until the detection of B6+ and B6-is completed, and if the connection of the terminals is correct, the corresponding detection street lamp is lighted. When the terminals B1+ and B1-are reversely connected, the circuit does not form a current loop due to the unidirectional conductivity of D2, so that the LED does not emit light, namely, the problem of the detected wiring harness is indicated, and the condition is equivalent to the condition in FIG. 3. And the lamps No. 1 and No. 2 of the detection tool are turned off. Since the wrong connection of the battery line is various, the specific place where the wrong connection is made cannot be determined by extinguishing the lamp. But the wiring should be carefully checked as long as the lamp is extinguished or the brightness is abnormal.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, including any reference to the above-mentioned embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. The utility model provides a battery acquisition pencil mistake proofing detection circuit which characterized in that, this detection circuit includes: a voltage-stabilizing diode D1, a diode D2, a voltage-stabilizing diode D3, an N-type MOS tube Q1, an N-type MOS tube Q2, an LED, a capacitor C1 and resistors R1-R5;
the cathode of the voltage-stabilizing diode D1 is connected with a battery B +, the anode of the voltage-stabilizing diode D1 is connected with a resistor R1 in series and then is connected with the G pole of an N-type MOS transistor Q1; the cathode of the diode D2 is connected with the battery B-, the resistor R2 is connected with the voltage stabilizing diode D3 in parallel, and the anode is connected with the anode of the diode D2;
the D pole of the N-type MOS transistor Q1 is connected with the G pole of the N-type MOS transistor Q2, the S poles of the N-type MOS transistor Q1 and the N-type MOS transistor Q2 are connected with the anode of a diode D2, and a resistor R4 and a capacitor C1 are connected in parallel with the GS pole of the N-type MOS transistor Q2; one end of the resistor R5 is connected with the battery B +, and the other end is connected with the anode of the LED1 in series and then is connected with a D pole loop of the N-type MOS transistor Q2; and finally, one end of the resistor R3 is connected with B +, and the other end is connected with the G pole of the N-type MOS transistor Q2 to be used as a bias.
2. A wire harness detector for detecting battery connection wires of a battery monitoring management module, which is characterized by comprising n detection circuits according to claim 1 and terminals corresponding to n battery sections, wherein the detection circuits are respectively connected with the batteries through the terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010442023.3A CN111693903A (en) | 2020-05-22 | 2020-05-22 | Battery collection wire harness error-proofing detection circuit and wire harness detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010442023.3A CN111693903A (en) | 2020-05-22 | 2020-05-22 | Battery collection wire harness error-proofing detection circuit and wire harness detector |
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| CN111693903A true CN111693903A (en) | 2020-09-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116106762A (en) * | 2023-02-07 | 2023-05-12 | 湖北钛时代新能源有限公司 | Battery pack voltage acquisition harness classification structure and classification method |
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|---|---|---|---|---|
| JP2000199771A (en) * | 1998-10-27 | 2000-07-18 | Denso Corp | Device for detecting voltage of set battery |
| CN102565711A (en) * | 2011-12-02 | 2012-07-11 | 毛广甫 | Method for testing voltage condition of battery pack |
| CN102780199A (en) * | 2011-05-13 | 2012-11-14 | 海洋王照明科技股份有限公司 | Overcurrent protection circuit and lamp |
| CN202939288U (en) * | 2012-10-18 | 2013-05-15 | 李文胜 | Storage battery electric quantity detection circuit |
| CN104184128A (en) * | 2013-05-24 | 2014-12-03 | 深圳市海洋王照明工程有限公司 | Battery discharge protection method and circuit and lamp thereof |
| CN209642357U (en) * | 2019-04-23 | 2019-11-15 | 赛卡电子科技(苏州)有限公司 | A kind of lithium battery voltage monitoring and protecting device based on electric resistance partial pressure type |
| CN111123168A (en) * | 2019-12-31 | 2020-05-08 | 杭州协能科技股份有限公司 | Fault detection circuit of battery pack connecting line |
-
2020
- 2020-05-22 CN CN202010442023.3A patent/CN111693903A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000199771A (en) * | 1998-10-27 | 2000-07-18 | Denso Corp | Device for detecting voltage of set battery |
| CN102780199A (en) * | 2011-05-13 | 2012-11-14 | 海洋王照明科技股份有限公司 | Overcurrent protection circuit and lamp |
| CN102565711A (en) * | 2011-12-02 | 2012-07-11 | 毛广甫 | Method for testing voltage condition of battery pack |
| CN202939288U (en) * | 2012-10-18 | 2013-05-15 | 李文胜 | Storage battery electric quantity detection circuit |
| CN104184128A (en) * | 2013-05-24 | 2014-12-03 | 深圳市海洋王照明工程有限公司 | Battery discharge protection method and circuit and lamp thereof |
| CN209642357U (en) * | 2019-04-23 | 2019-11-15 | 赛卡电子科技(苏州)有限公司 | A kind of lithium battery voltage monitoring and protecting device based on electric resistance partial pressure type |
| CN111123168A (en) * | 2019-12-31 | 2020-05-08 | 杭州协能科技股份有限公司 | Fault detection circuit of battery pack connecting line |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116106762A (en) * | 2023-02-07 | 2023-05-12 | 湖北钛时代新能源有限公司 | Battery pack voltage acquisition harness classification structure and classification method |
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Address after: 310012 Room 201, 2 / F, Haichuang Park, CLP Haikang Group Co., Ltd., No. 198, aicheng street, Wuchang Street, Yuhang District, Hangzhou City, Zhejiang Province Applicant after: HANGZHOU GOLD ELECTRONIC EQUIPMENT Inc.,Ltd. Address before: 310018 room 223, floor 2, building 9, No. 20, Science Park Road, Baiyang street, Qiantang new area, Hangzhou, Zhejiang Applicant before: HANGZHOU GOLD ELECTRONIC EQUIPMENT Inc.,Ltd. |
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Application publication date: 20200922 |
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