CN218180964U - Electric motor car cable fault detection system - Google Patents
Electric motor car cable fault detection system Download PDFInfo
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- CN218180964U CN218180964U CN202222333197.3U CN202222333197U CN218180964U CN 218180964 U CN218180964 U CN 218180964U CN 202222333197 U CN202222333197 U CN 202222333197U CN 218180964 U CN218180964 U CN 218180964U
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- triode
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- storage battery
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- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 14
- 239000010703 silicon Substances 0.000 claims abstract description 14
- 230000001960 triggered effect Effects 0.000 abstract 1
- 230000032683 aging Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The utility model discloses an electric motor car cable fault detection system includes: the first detection unit detects whether a metal frame of the electric vehicle is electrified or not through the triode Q1, and transmits electrified voltage to the first trigger unit when the metal frame of the electric vehicle is electrified; the first trigger unit carries out secondary detection through the triode Q2, and triggers alarm and cuts off the output of the storage battery B1 when the first trigger unit is conducted; the second detection unit detects the temperature of the cable through the thermistor PTC, and the output of the storage battery B1 is prevented when the resistance value is increased; the second trigger unit controls the normally closed contact S1 to be triggered and opened according to the conduction of the triode Q5 through the relay T; the utility model discloses a diode D1 is connected with the metal frame of electric motor car, and when the damaged position of cable and metal frame contact, triode Q1 and triode Q2 receive leakage voltage in proper order to carry out the trouble suggestion through speaker L, and control switching on of silicon controlled rectifier U1, and then adsorb switch S through electro-magnet CT, cut off battery B1' S power supply.
Description
Technical Field
The utility model belongs to cable detection area, concretely relates to electric motor car cable fault detection system.
Background
The cable detects and detects operating condition, operational environment and the load degree to the cable, guarantees the safety in the cable work, and the cable is the important component of electric product, and whether qualified electric product whole quality has been decided to whether the cable quality is qualified, is necessary to carry out quick accurate detection to the cable quality.
The existing cable faults are generated under long-time use, cable detection is carried out on cables which are processed and cables of connecting equipment, therefore, the states of working cables cannot be detected, spontaneous combustion and faults are caused by aging of circuits and poor storage batteries, the aging of the circuits is slowly formed along with time, and the contact friction of metal structures causes, therefore, the cables need to be checked according to the time, the electric vehicle is complex in wiring, and whether fault points or aging points exist can not be accurately judged.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model provides an electric motor car cable fault detection system to solve the above-mentioned problem that prior art exists.
The technical scheme is as follows: an electric vehicle cable fault detection system comprising:
the first detection unit detects whether a metal frame of the electric vehicle is electrified or not through the triode Q1, and transmits electrified voltage to the first trigger unit when the metal frame of the electric vehicle is electrified;
the first trigger unit carries out secondary detection through the triode Q2, and triggers alarm and cuts off the output of the storage battery B1 when the first trigger unit is conducted;
the second detection unit detects the temperature of the cable through the thermistor PTC, and the output of the storage battery B1 is prevented when the resistance value is increased;
and the second trigger unit controls the triggering opening of the normally closed contact S1 according to the conduction of the triode Q5 through the relay T.
IN a further embodiment, the first detection unit comprises a diode D1, a resistor R2 and a triode Q1, wherein the positive terminal of the diode D1 is connected with the input terminal IN and the metal frame of the electric vehicle respectively; the negative end of the diode D1 is respectively connected with one ends of the resistor R1 and the resistor R2; the other end of the resistor R2 is connected with the base end of the triode Q1; the other end of the resistor R1 is connected with a ground wire GND.
In a further embodiment, the first trigger unit includes a resistor R3, a transistor Q2, a resistor R4, a speaker L, and a thyristor U1, wherein one end of the resistor R3 is connected to an emitter terminal of the transistor Q2 and an emitter terminal of the transistor Q1, respectively; the other end of the resistor R3 is connected with the base end of the triode Q2; the collector end of the triode Q2 is respectively connected with one end of a resistor R4, a pin 1 of a controllable silicon U1 and one end of a loudspeaker L; the other end of the loudspeaker L is connected with the ground wire GND and the other end of the resistor R4 respectively.
IN a further embodiment, the second detection unit comprises a switch S, a storage battery B1, a thermistor PTC, a triode Q3 and a triode Q5, wherein one end of the switch S is respectively connected with one end of the thermistor PTC, a power supply terminal IN1 of the charger, a collector terminal of the triode Q1, and an emitter terminal and a base terminal of the triode Q3; the other end of the switch S is connected with the positive end of the storage battery B1; the negative end of the storage battery B1 is connected with a ground wire GND; the other end of the thermistor PTC is connected with the emitter end of the triode Q5; and the base terminal of the triode Q5 and the collector terminal of the triode Q3.
In a further embodiment, the second trigger unit comprises a relay T1, a triode Q4, a normally closed contact S1 and an electromagnet CT, wherein one end of the relay T1 is connected with a collector end of the triode Q5 and a power output end OUT respectively; the base electrode end and the collector electrode end of the triode Q4 are respectively connected with the base electrode end of the triode Q3 and the positive electrode end of the silicon controlled rectifier U1; the emitter end of the triode Q4 is connected with one end of the normally closed contact S1; the other end of the normally closed contact S1 is connected with one end of the electromagnet CT and the negative end of the silicon controlled rectifier U1 respectively; the other end of the electromagnet CT is connected with a ground wire GND.
In a further embodiment, the transistor Q1 and the transistor Q4 are both NPN in type; the triode Q2, the triode Q3 and the triode Q5 are PNP in type.
Has the beneficial effects that: the utility model relates to an electric motor car cable fault detection system, be connected through the metal frame of diode D1 with the electric motor car, when the damaged position of cable contacts with the metal frame, triode Q1 and triode Q2 receive leakage voltage in proper order, and carry out the trouble suggestion through speaker L, and switch on of control silicon controlled rectifier U1, and then adsorb switch S through electro-magnet CT, cut off battery B1 ' S power supply, and then detect the cable with the metal frame contact, this outer cable to contactless metal frame, through concatenating thermistor RTC on battery B1 ' S output cable, along with the increase of electric current, temperature in the cable also can increase, thermistor PTC is according to the increase of temperature, increase inside resistance, and then limit battery B1 ' S output, ensure that the cable overflows and does not switch on, detect the electric motor car cable constantly.
Drawings
Fig. 1 is a circuit distribution diagram of the present invention.
Detailed Description
An electric vehicle cable fault detection system comprising:
the detection device comprises a first detection unit, wherein the first detection unit comprises a diode D1, a resistor R2 and a triode Q1.
The positive end of the diode D1 IN the first detection unit is respectively connected with the input end IN and the metal frame of the electric vehicle; the negative end of the diode D1 is respectively connected with one ends of the resistor R1 and the resistor R2; the other end of the resistor R2 is connected with the base end of the triode Q1; the other end of the resistor R1 is connected with a ground wire GND; the triode Q1 detects whether a metal frame of the electric vehicle is electrified or not, and if the metal frame is electrified, the electrified voltage is transmitted to the first trigger unit;
the trigger device comprises a first trigger unit, wherein the first trigger unit comprises a resistor R3, a triode Q2, a resistor R4, a loudspeaker L and a controllable silicon U1.
One end of the resistor R3 in the first trigger unit is respectively connected with an emitter terminal of the triode Q2 and an emitter terminal of the triode Q1; the other end of the resistor R3 is connected with the base end of the triode Q2; the collector end of the triode Q2 is respectively connected with one end of a resistor R4, a pin 1 of a controllable silicon U1 and one end of a loudspeaker L; the other end of the loudspeaker L is connected with the ground wire GND and the other end of the resistor R4 respectively; the triode Q2 carries out secondary detection, and triggers alarm and cuts off the output of the storage battery B1 when the triode Q2 is conducted;
and the second detection unit comprises a switch S, a storage battery B1, a thermistor PTC, a triode Q3 and a triode Q5.
One end of the switch S IN the second detection unit is respectively connected with one end of a thermistor PTC, a power supply end IN1 of a charger, a collector end of a triode Q1, an emitter end and a base end of a triode Q3; the other end of the switch S is connected with the positive end of the storage battery B1; the negative end of the storage battery B1 is connected with a ground wire GND; the other end of the thermistor PTC is connected with the emitter end of the triode Q5; the base electrode end of the triode Q5 and the collector electrode end of the triode Q3; the thermistor PTC detects the temperature of the cable, and the resistance value is increased to prevent the output of the storage battery B1;
and the second trigger unit comprises a relay T1, a triode Q4, a normally closed contact S1 and an electromagnet CT.
One end of the relay T1 in the second trigger unit is respectively connected with the collector terminal of the triode Q5 and the power output terminal OUT; the base electrode end and the collector electrode end of the triode Q4 are respectively connected with the base electrode end of the triode Q3 and the positive electrode end of the controllable silicon U1; the emitter end of the triode Q4 is connected with one end of the normally closed contact S1; the other end of the normally closed contact S1 is connected with one end of the electromagnet CT and the negative end of the silicon controlled rectifier U1 respectively; the other end of the electromagnet CT is connected with a ground wire GND; and the relay T controls the triggering opening of the normally closed contact S1 according to the conduction of the triode Q5.
Description of the working principle: when a cable of the electric vehicle is damaged or abraded and contacts the metal frame, the diode D1 unidirectionally transmits leakage voltage and transmits the leakage voltage to the triode Q1, the triode Q1 is conducted, the triode Q2 is conducted, the loudspeaker L prompts that the silicon controlled rectifier U1 is conducted, the electromagnet CT is electrified, and the adsorption switch S is disconnected; at this time, fault prompt of the cable and protection of the storage battery B1 are finished;
when a cable of the electric vehicle runs in an overload state, the current in the cable is increased at the moment, the temperature of the cable is increased, when the temperature of a thermistor PTC connected in series in the cable is increased, the internal resistance value is increased, the power supply output of a coarse battery B1 is limited, a triode Q3 is conducted at the moment, a triode Q5 is conducted and has no output voltage, a relay T1 is in a stop state, a normally closed contact S1 is in a closed state, and under the output of the voltage of a storage battery B1, a triode Q4 is conducted at the moment, an electromagnet CT attracts a switch S, the power supply of the storage battery B1 is cut off, and when the temperature of the cable is recovered, the switch S is pressed again, so that the coarse battery B1 is communicated with the triode Q1 and the triode Q3;
when the temperature of the cable detected by the thermistor PTC is lower than the set temperature of the thermistor PTC, the thermistor PTC is switched on and supplies voltage to the triode Q5, the voltage supplied by the triode Q5 is transmitted to the relay T1 under the control of the triode Q3, the normally closed contact S1 is switched off, the electromagnet CT is powered off, the power supply of the storage battery B1 is supplied to electric equipment on the electric vehicle through the power supply output end OUT, and then the power supply cable of the electric vehicle is detected.
As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limited to the present invention itself, but may be modified in various forms and details without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (5)
1. An electric vehicle cable fault detection system, comprising:
the first detection unit detects whether a metal frame of the electric vehicle is electrified or not through the triode Q1, and transmits electrified voltage to the first trigger unit when the metal frame of the electric vehicle is electrified;
the first trigger unit carries out secondary detection through the triode Q2, and triggers alarm and cuts off the output of the storage battery B1 when the first trigger unit is conducted;
the second detection unit detects the temperature of the cable through the thermistor PTC, and the output of the storage battery B1 is prevented when the resistance value is increased;
and the second trigger unit controls the triggering opening of the normally closed contact S1 according to the conduction of the triode Q5 through the relay T.
2. The system of claim 1, wherein the cable fault detection system comprises: the first detection unit comprises a diode D1, a resistor R2 and a triode Q1, wherein the positive end of the diode D1 is respectively connected with the input end IN and a metal frame of the electric vehicle; the cathode end of the diode D1 is respectively connected with one ends of the resistor R1 and the resistor R2; the other end of the resistor R2 is connected with the base end of the triode Q1; the other end of the resistor R1 is connected with a ground wire GND.
3. The system of claim 1, wherein the cable fault detection system comprises: the first trigger unit comprises a resistor R3, a triode Q2, a resistor R4, a loudspeaker L and a controlled silicon U1, wherein one end of the resistor R3 is respectively connected with an emitter terminal of the triode Q2 and an emitter terminal of the triode Q1; the other end of the resistor R3 is connected with the base end of the triode Q2; the collector end of the triode Q2 is respectively connected with one end of a resistor R4, a pin 1 of a controllable silicon U1 and one end of a loudspeaker L; the other end of the loudspeaker L is connected with the ground wire GND and the other end of the resistor R4 respectively.
4. The system of claim 1, wherein the cable fault detection system comprises: the second detection unit comprises a switch S, a storage battery B1, a thermistor PTC, a triode Q3 and a triode Q5, wherein one end of the switch S is respectively connected with one end of the thermistor PTC, a power supply end IN1 of a charger, a collector end of the triode Q1, and an emitter end and a base end of the triode Q3; the other end of the switch S is connected with the positive end of the storage battery B1; the negative end of the storage battery B1 is connected with a ground wire GND; the other end of the thermistor PTC is connected with the emitter end of the triode Q5; and the base electrode end of the triode Q5 and the collector electrode end of the triode Q3.
5. The system of claim 1, wherein the cable fault detection system comprises: the second trigger unit comprises a relay T1, a triode Q4, a normally closed contact S1 and an electromagnet CT, wherein one end of the relay T1 is respectively connected with a collector end of the triode Q5 and a power output end OUT; the base electrode end and the collector electrode end of the triode Q4 are respectively connected with the base electrode end of the triode Q3 and the positive electrode end of the silicon controlled rectifier U1; the emitter end of the triode Q4 is connected with one end of the normally closed contact S1; the other end of the normally closed contact S1 is connected with one end of the electromagnet CT and the negative end of the silicon controlled rectifier U1 respectively; and the other end of the electromagnet CT is connected with a ground wire GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222333197.3U CN218180964U (en) | 2022-09-02 | 2022-09-02 | Electric motor car cable fault detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222333197.3U CN218180964U (en) | 2022-09-02 | 2022-09-02 | Electric motor car cable fault detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218180964U true CN218180964U (en) | 2022-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222333197.3U Active CN218180964U (en) | 2022-09-02 | 2022-09-02 | Electric motor car cable fault detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218180964U (en) |
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2022
- 2022-09-02 CN CN202222333197.3U patent/CN218180964U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Fault Detection System for Electric Vehicle Cable Granted publication date: 20221230 Pledgee: Bank of China Limited Fengxian sub branch Pledgor: Jiangsu DUSHENG Locomotive Co.,Ltd. Registration number: Y2024320000061 |