CN210051878U - BMS wire harness detection circuit - Google Patents
BMS wire harness detection circuit Download PDFInfo
- Publication number
- CN210051878U CN210051878U CN201920494307.XU CN201920494307U CN210051878U CN 210051878 U CN210051878 U CN 210051878U CN 201920494307 U CN201920494307 U CN 201920494307U CN 210051878 U CN210051878 U CN 210051878U
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Abstract
The utility model relates to a BMS pencil detects technical field, concretely relates to BMS pencil detection circuitry. The device comprises power supply circuits, an optical coupler, a plurality of SA556 circuits and indicator lamps which are consistent with the SA556 circuits in number and used for indicating on-off of a wiring harness, wherein each SA556 circuit is provided with a wiring harness input port and a wiring harness output port which are used for connecting two ends of the wiring harness, the power supply circuits are connected with THR and TRI pins of a first SA556 circuit through the optical coupler, OUT pins of each SA556 circuit are connected with the wiring harness input port of the corresponding SA556 circuit through triodes, CON pins of each SA556 circuit are connected with the wiring harness output port of the corresponding SA556 circuit through the indicator lamps, and each SA556 circuit behind the first SA556 circuit is connected with a triode collector of the previous SA556 circuit through the THR and TRI pins. This circuit can detect a plurality of pencil simultaneously, and detection efficiency is high. The detection of short circuit, open circuit and line sequence is realized through one circuit, and the practicability is high.
Description
Technical Field
The utility model relates to a BMS pencil detects technical field, concretely relates to BMS pencil detection circuitry.
Background
With the rapid development of new energy technology, batteries are widely used as important energy storage units, and because of the limitation of the current battery technology, the voltage of a battery monomer is low, and in order to increase the energy storage capacity and the output power, the batteries are usually combined in parallel and series in high-capacity and high-power application. Along with the quantity that the battery is established ties more and more, and then promote battery management system rapid development, the quantity of battery management system pencil constantly increases, and the complexity of pencil is also higher and higher, if the battery pencil can not connect correctly, or has short circuit, open circuit, causes danger such as fire, explosion easily, and battery management system also is consequently damaged easily.
The current commonly used detection methods for line sequence, short circuit and open circuit comprise visual measurement, universal meter detection and BMS connection actual measurement. The visual inspection method and the universal meter detection method have low detection efficiency, completely depend on manual detection, and are easy to make mistakes; connect the BMS actual measurement, in case there is the wrong line, BMS harms easily, damages, and detection cost is higher, and is difficult to judge wrong place.
SUMMERY OF THE UTILITY MODEL
The utility model aims at exactly being to prior art's defect, provide a detection efficiency height, can detect out the BMS pencil detection circuitry of line preface, short circuit and open circuit simultaneously.
The utility model relates to a BMS pencil detection circuitry, including supply circuit, opto-coupler, a plurality of SA556 circuit and with the unanimous pilot lamp that is used for instructing the pencil break-make of SA556 circuit quantity, every the SA556 circuit all has pencil input port and pencil output port that is used for connecting the pencil both ends, supply circuit passes through the opto-coupler and is connected with the THR and the TRI foot of first SA556 circuit, every the OUT foot of SA556 circuit all is connected rather than pencil input port through the triode, every the CON foot of SA556 circuit all is connected rather than pencil output port through the pilot lamp, and each SA556 circuit behind the first SA556 circuit all is connected with the triode collecting electrode of preceding SA556 circuit through THR and TRI foot.
Preferably, the power supply circuit comprises a power supply and a switch, a light emitting diode is arranged in the optocoupler, the anode of the light emitting diode is connected with the power supply of the power supply circuit, and the cathode of the light emitting diode is grounded through the switch.
Preferably, the first SA556 circuit includes a resistor R2 and a resistor R3 connected in parallel to the OUT pin, the other end of the resistor R2 is connected to the VCC pin of the SA556 circuit, the other end of the resistor R3 is connected to the base of the transistor of the first SA556 circuit, and the emitter of the transistor is connected to the VCC pin of the SA556 circuit.
Preferably, the collector of the triode of the first SA556 circuit is grounded through a diode D1, a resistor R9 and a capacitor C5 which are connected in series, the pins THR and TRI of the second SA556 circuit are grounded through a resistor R12, and the pins THR and TRI of the second SA556 circuit are connected between the resistor R9 and the capacitor C5.
The utility model has the advantages that: through concatenating a plurality of SA556 circuits to set up pencil input port, pencil output port and pilot lamp at every SA556 circuit's OUT foot and CON foot, connect every pencil respectively between every SA556 circuit's pencil input port, pencil output port, when warning the pilot lamp and light in proper order, when certain is not bright all the way, explain the pencil and open a way, when lighting a plurality of warning pilot lamps simultaneously, explain the pencil short circuit, when warning the pilot lamp and light OUT of order, explain pencil line sequence mistake. This circuit can detect a plurality of pencil simultaneously, and detection efficiency is high. The detection of short circuit, open circuit and line sequence is realized through one circuit, and the practicability is high.
Drawings
Fig. 1 is a circuit diagram of the present invention.
Detailed Description
The invention will be further described in detail with reference to the drawings and the following detailed description, which are provided for the purpose of clearly understanding the invention and are not intended to limit the invention.
As shown in fig. 1, a BMS harness detecting circuit includes a 5v power supply circuit, an optocoupler EL357NB, a plurality of SA556 circuits, and indicator lamps corresponding to the SA556 circuits in number for indicating on/off of the harness. Each SA556 circuit has a harness input port and a harness output port for connecting two ends of a harness. The harness input port and the harness output port of the first SA556 circuit are respectively PIN1A and PIN1B, the harness input port and the harness output port of the second SA556 circuit are respectively PIN2A and PIN2B, and the harness input port and the harness output port of the nth SA556 circuit are respectively PINnA and PINnB.
The power supply circuit is connected with THR and TRI pins of U1A in the first SA556 circuit through optocouplers, the OUT pin of each SA556 circuit is connected with a wire harness input port of the corresponding SA556 circuit through a triode, the CON pin of each SA556 circuit is connected with a wire harness output port of the corresponding SA556 circuit through an indicator lamp, and each SA556 circuit behind the first SA556 circuit is connected with a triode collector of the previous SA556 circuit through the THR and TRI pins.
The power supply circuit comprises a 5v power supply and a switch, a light emitting diode is arranged in the optocoupler, the anode of the light emitting diode is connected with the power supply of the power supply circuit, and the cathode of the light emitting diode is grounded through the switch. The first SA556 circuit comprises a resistor R2 and a resistor R3 which are connected in parallel with an OUT pin, the other end of the resistor R2 is connected with a VCC pin of the SA556 circuit, the other end of the resistor R3 is connected with a base electrode of a transistor Q1 of the first SA556 circuit, and an emitter electrode of a transistor Q1 is connected with the VCC pin of the SA556 circuit. The collector of the triode of the first SA556 circuit is grounded through a diode D1, a resistor R9 and a capacitor C5 which are connected in series, the pins THR and TRI of the second SA556 circuit are grounded through a resistor R12, and the pins THR and TRI of the second SA556 circuit are connected between the resistor R9 and the capacitor C5.
The working principle of the circuit is as follows: after the cable is connected, the switch S1 is pressed, the optocoupler is conducted, and the 5V power supply flows into THR and TRI pins of the first SA556 circuit and flows OUT through an OUT pin and a triode Q1. When the wire harness connected between the PIN1A and the PIN1B is conductive, the indicator lamp D3 is turned on, when the wire harness is broken, the indicator lamp D3 is turned off, when the wire harness is short-circuited, both the D3 and the D4 are turned on, and when the wire harness is in error, the D3 is turned off, and the D4 is turned on.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (4)
1. A BMS harness detection circuit, characterized in that: the device comprises power supply circuits, an optical coupler, a plurality of SA556 circuits and indicator lamps which are consistent with the SA556 circuits in number and used for indicating on-off of a wiring harness, wherein each SA556 circuit is provided with a wiring harness input port and a wiring harness output port which are used for connecting two ends of the wiring harness, the power supply circuits are connected with THR and TRI pins of a first SA556 circuit through the optical coupler, OUT pins of each SA556 circuit are connected with the wiring harness input port of the corresponding SA556 circuit through triodes, CON pins of each SA556 circuit are connected with the wiring harness output port of the corresponding SA556 circuit through the indicator lamps, and each SA556 circuit behind the first SA556 circuit is connected with a triode collector of the previous SA556 circuit through the THR and TRI pins.
2. The BMS harness detection circuit of claim 1, wherein: the power supply circuit comprises a power supply and a switch, a light emitting diode is arranged in the optocoupler, the anode of the light emitting diode is connected with the power supply of the power supply circuit, and the cathode of the light emitting diode is grounded through the switch.
3. The BMS harness detection circuit of claim 1, wherein: the first SA556 circuit comprises a resistor R2 and a resistor R3 which are connected in parallel with an OUT pin, the other end of the resistor R2 is connected with a VCC pin of the SA556 circuit, the other end of the resistor R3 is connected with a base electrode of a triode of the first SA556 circuit, and an emitter electrode of the triode is connected with the VCC pin of the SA556 circuit.
4. The BMS harness detection circuit of claim 1, wherein: the collector of the triode of the first SA556 circuit is grounded through a diode D1, a resistor R9 and a capacitor C5 which are connected in series, the pins THR and TRI of the second SA556 circuit are grounded through a resistor R12, and the pins THR and TRI of the second SA556 circuit are connected between a resistor R9 and a capacitor C5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920494307.XU CN210051878U (en) | 2019-04-12 | 2019-04-12 | BMS wire harness detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920494307.XU CN210051878U (en) | 2019-04-12 | 2019-04-12 | BMS wire harness detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210051878U true CN210051878U (en) | 2020-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920494307.XU Active CN210051878U (en) | 2019-04-12 | 2019-04-12 | BMS wire harness detection circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN210051878U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111736099A (en) * | 2020-07-30 | 2020-10-02 | 格力电器（郑州）有限公司 | Connecting wire detection method and circuit |
| CN112147540A (en) * | 2020-08-25 | 2020-12-29 | 青岛海尔空调器有限总公司 | Detection tool for detecting number of effective fins of heat exchanger and use method |
-
2019
- 2019-04-12 CN CN201920494307.XU patent/CN210051878U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111736099A (en) * | 2020-07-30 | 2020-10-02 | 格力电器（郑州）有限公司 | Connecting wire detection method and circuit |
| CN112147540A (en) * | 2020-08-25 | 2020-12-29 | 青岛海尔空调器有限总公司 | Detection tool for detecting number of effective fins of heat exchanger and use method |
| CN112147540B (en) * | 2020-08-25 | 2022-10-28 | 青岛海尔空调器有限总公司 | Detection tool for detecting number of effective fins of heat exchanger and using method |
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Address after: 430056 No. 339 Chaoyang Avenue, Wuhan Economic and Technological Development Zone, Wuhan City, Hubei Province Patentee after: Zhixin Control System Co., Ltd Address before: 430056 No. 339 Chaoyang Avenue, Wuhan Economic and Technological Development Zone, Wuhan City, Hubei Province Patentee before: DONGFENG HANGSHENG (WUHAN) AUTOMOTIVE CONTROL SYSTEM Co.,Ltd. |