CN211653017U - Circuit device for detecting overcurrent performance of vehicle-mounted connector - Google Patents
Circuit device for detecting overcurrent performance of vehicle-mounted connector Download PDFInfo
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- CN211653017U CN211653017U CN201922087057.0U CN201922087057U CN211653017U CN 211653017 U CN211653017 U CN 211653017U CN 201922087057 U CN201922087057 U CN 201922087057U CN 211653017 U CN211653017 U CN 211653017U
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Abstract
The utility model discloses a detect on-vehicle connector overcurrent performance's circuit arrangement. The high-temperature and low-temperature box comprises a high-temperature and low-temperature box, a display module, a switch power supply, a thermocouple sensor, a controller, a constant current source, a power resistor, a power supply and a power supply, wherein a female end contact pin and a male end contact pin are arranged in the high-temperature and low-temperature box; the single chip microcomputer circuit is respectively connected with the relay, the current sampling resistor, the display module and the switching power supply, the male end contact pin is sequentially connected to the negative electrode of the constant current source after passing through the relay and the current sampling resistor, and the thermocouple sensor is connected to the single chip microcomputer circuit. The utility model discloses filled current on-vehicle connector and lacked corresponding overcurrent test circuit arrangement's technical problem, overflowed and damaged the technical problem who leads to socket abnormal operation, influence driving safety nature because of on-vehicle connector not detecting in the use.
Description
Technical Field
The utility model belongs to a car connector field, concretely relates to detect on-vehicle connector overcurrent performance's circuit arrangement.
Background
The automobile connector is a connecting device for connecting an on-board control unit. The failure of which directly affects the operation of the onboard control unit. Damage from overcurrent insertion is one of the causes of connector failure. Therefore, if the selected connector is not subjected to a corresponding overcurrent test, the risk of damage caused by overcurrent is increased greatly, and the control unit connected with the socket cannot operate normally, so that the driving safety is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that exists among the background art, the utility model aims at providing a detect on-vehicle connector overcurrent performance's circuit arrangement has filled the technical problem that the on-vehicle connector to among the prior art lacks corresponding overcurrent test circuit arrangement, overflows and damages the technical problem that leads to socket normal operating, influence the driving safety nature because of on-vehicle connector not detecting in the use.
The technical scheme of the utility model is realized like this:
the utility model comprises a constant current source, a power resistor, a lead, a high and low temperature box, a female end contact pin, a male end contact pin, a thermocouple sensor, a display module, a controller and a switch power supply; the vehicle-mounted connector is formed by a female end contact pin and a male end contact pin, the female end contact pin and the male end contact pin are installed in a high-low temperature box, the female end contact pin and the male end contact pin are in electric connection, a thermocouple sensor is installed on the male end contact pin and is electrically connected to a controller, the male end contact pin is electrically connected to the negative electrode of a constant current source through the controller, the positive electrode of the constant current source is electrically connected with the female end contact pin through a power resistor, and the controller is respectively connected with a display module and a switching power supply; the controller comprises a relay, a current sampling resistor and a singlechip circuit; the single chip microcomputer circuit is respectively connected with the relay, the current sampling resistor, the display module and the switching power supply, the male end contact pin is sequentially connected to the negative electrode of the constant current source after passing through the relay and the current sampling resistor, and the thermocouple sensor is connected to the single chip microcomputer circuit.
The single-chip microcomputer circuit comprises a single-chip microcomputer IC2 and a step-down voltage stabilizer IC1, a resistor R1 is connected in series between an EXTAL pin and an XTAL pin of the single-chip microcomputer IC2, the EXTAL pin and the XTAL pin of the single-chip microcomputer IC2 are respectively connected with two ends of a crystal oscillator Y1, and two ends of the crystal oscillator Y1 are respectively grounded after passing through a capacitor C2 and a capacitor C3; the RST pin of the singlechip IC2 is grounded through a capacitor C4, the RST pin of the singlechip IC2 is connected to a power supply voltage VCC through a resistor R2, the PAD08 pin of the singlechip IC2 is connected to the base electrode of a triode Q41, the collector electrode of the triode Q41 is connected to the power supply voltage VCC through an indicator lamp D2, and the emitter electrode of the triode Q41 is grounded; a PAD03 pin of the singlechip IC2 is connected with the output end of the thermocouple sensor; an INPUT pin of the step-down voltage regulator IC1 is connected to one end of a power supply interface J1 through a diode D1, the other end of the power supply interface J1 is grounded, an OUTPUT pin of the step-down voltage regulator IC1 is grounded through a capacitor C1, and two ends of the power supply interface J1 are connected with a switching power supply in parallel; a PP0 pin of the singlechip IC2 is connected to a base electrode of a triode Q1, a collector electrode of the triode Q1 is connected to power supply voltage through an armature coil part of a RELAY RELAY1, and an emitter electrode of the triode Q1 is grounded; one end of a switch electric control part of a RELAY RELAY1 is connected to one end of a connection interface J2, the other end of the switch electric control part of a RELAY RELAY1 is connected to a VIN-end of a current sampling chip INA193, an OUT end of the current sampling chip INA193 is connected to a PAD08 pin of a singlechip IC2 through a resistor R7, a PAD08 pin of a singlechip IC2 is grounded through a resistor R6 and a capacitor C6, a VIN-end of the current sampling chip INA193 is connected to a VIN + end of the current sampling chip INA193 through a current sampling resistor R8, a VIN + end of the current sampling chip INA193 is connected to the other end of the connection interface J2, three ends of the connection interface J2 are connected with a male terminal pin, a negative electrode of a constant current source and a thermocouple sensor signal line, a1 end of the connection interface J2 is connected with the male terminal pin, a 2 port is.
And a relay, a current sampling resistor and a singlechip circuit in the controller are all integrated on the same circuit board.
The high-low temperature box is a closed box body for providing different temperatures.
And a thermocouple sensor is attached to the surface of the male end contact pin.
The utility model has the advantages that:
the utility model discloses filled the technical problem that the on-vehicle connector to among the prior art lacks corresponding overcurrent test circuit arrangement, overflowed and damage the technical problem who leads to socket normal operating, influence driving safety nature because of on-vehicle connector not detecting in the use.
The utility model discloses solved the product to a certain extent and required carrying out corresponding overflow test requirement to the connector of choosing, greatly reduced because of overflowing the risk of damage.
Drawings
Fig. 1 is a schematic diagram of the overall connection structure of the circuit device of the present invention.
Fig. 2 is a schematic circuit diagram of the controller portion of the circuit device of the present invention.
In the figure: the device comprises a constant current source (1), a power resistor (2), a lead (3), a high-low temperature box (4), a female end pin (5), a male end pin (6), a thermocouple sensor (7), a relay (8), a current sampling resistor (9), a display module (10), a controller (11), a switching power supply (12) and a single chip circuit (13).
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1, the specific implementation includes a constant current source 1, a power resistor 2, a conducting wire 3, a high and low temperature box 4, a female terminal pin 5, a male terminal pin 6, a thermocouple sensor 7, a display module 10, a controller 11, and a switching power supply 12; female end pin 5 and male end pin 6 constitute on-vehicle connector, female end pin 5 and male end pin 6 are installed in high and low temperature box 4, female end pin 5 and male end pin 6 butt joint electricity are pegged graft, the surface of male end pin 6 is attached with thermocouple sensor 7, thermocouple sensor 7 electricity is connected to controller 11, male end pin 6 is connected to the negative pole of constant current source 1 through controller 11 electricity, the positive pole of constant current source 1 is connected with female end pin 5 electricity through power resistor 2, controller 11 is connected with display module 10 and switching power supply 12 respectively.
The controller 11 comprises a relay 8, a current sampling resistor 9 and a singlechip circuit 13; the single chip microcomputer circuit 13 is respectively connected with the relay 8, the current sampling resistor 9, the display module 10 and the switching power supply 12, the male-end contact pin 6 is connected to the negative electrode of the constant current source 1 after sequentially passing through the relay 8 and the current sampling resistor 9, and the thermocouple sensor 7 is connected to the single chip microcomputer circuit 13.
As shown in fig. 2, the single chip microcomputer circuit 13 includes a single chip microcomputer IC2 and a step-down voltage regulator IC1, a resistor R1 is connected in series between an extra pin and an XTAL pin of the single chip microcomputer IC2, the extra pin and the XTAL pin of the single chip microcomputer IC2 are respectively connected with two ends of a crystal oscillator Y1, and two ends of the crystal oscillator Y1 are grounded after passing through a capacitor C2 and a capacitor C3 respectively; the RST pin of the singlechip IC2 is grounded through a capacitor C4, the RST pin of the singlechip IC2 is connected to a power supply voltage VCC through a resistor R2, the PAD08 pin of the singlechip IC2 is connected to the base electrode of a triode Q41, the collector electrode of the triode Q41 is connected to the power supply voltage VCC through an indicator lamp D2, and the emitter electrode of the triode Q41 is grounded; a PAD03 pin of the singlechip IC2 is connected with the output end of the thermocouple sensor 7; an INPUT pin of the step-down voltage regulator IC1 is connected to one end of a power supply interface J1 through a diode D1, the other end of the power supply interface J1 is grounded, an OUTPUT pin of the step-down voltage regulator IC1 is grounded through a capacitor C1, and two ends of the power supply interface J1 are connected with the switching power supply 12 in parallel; a PP0 pin of the singlechip IC2 is connected to a base electrode of a triode Q1, a collector electrode of the triode Q1 is connected to power supply voltage through an armature coil part of a RELAY RELAY1, and an emitter electrode of the triode Q1 is grounded; one end of a switch electric control part of the RELAY RELAY1 is connected to one end of the connection interface J2, the other end of the switch electric control part of the RELAY RELAY1 is connected to the VIN-end of the current sampling chip INA193, the OUT end of the current sampling chip INA193 is connected to the PAD08 pin of the singlechip IC2 through a resistor R7, the PAD08 pin of the singlechip IC2 is grounded through a resistor R6 and a capacitor C6, the VIN-end of the current sampling chip INA193 is connected to the VIN + end of the RELAY RELAY through a current sampling resistor R8, the VIN + end of the current sampling chip INA193 is a normally open end, the VIN + end of the current sampling chip INA193 is connected to the other end of the connection interface J2, and the two ends of the connection interface J2 are connected with.
In specific implementation, the high-low temperature box provides the limit working environment temperature of the vehicle-mounted connector for providing the closed box bodies with different temperatures. The relay 8, the current sampling resistor 9 and the singlechip circuit 13 in the controller 11 are all integrated on the same circuit board.
In the controller 11, the constant current source 1 is connected to the power supply interface J1, the connection interface J2 is connected in series to the circuit of the circuit device, and the switching power supply 12 supplies power to the controller.
The following description is given with respect to the constant current source output 40A:
as shown in fig. 2, the switching power supply supplies power to the control device, and the constant current source outputs 40A. The temperature environment was set at 120 ℃ and the test was started.
The switch electric control part of the controller integrated RELAY 8 (namely the RELAY RELAY1) is in a normally closed initial state, when the test is started, the single chip IC2 does not output high potential, and the triode Q1 is not conducted and grounded. At this time, the armature coil portion of the relay 8 is not energized and is in a normally closed conducting state, which makes the constant current source 1 conduct to the current sampling resistor R8 and the vehicle-mounted connector.
When the constant current source 1 outputs a test current, the controller collects the current through the current sampling resistor R8, and if the collected current is less than 5A, the controller conducts buzzing and flashing alarm through the indicator LAMP LAMP. If the test result is normal, the system enters a normal test mode.
If the specified test time is reached for 30min, the LAMP will give an alarm and be turned on. And in the default output state, the LAMP is in the off state.
High level control is applied to the base electrode of the triode Q1 through the singlechip IC2, the armature coil part of the RELAY 8 is electrified and attracted, the state of the switch electric control part of the RELAY 8 (namely the RELAY RELAY1) is driven to be opened and not electrified, a loop is disconnected, and the constant current source 2 is not conducted on the current sampling resistor R8 and the vehicle-mounted connector. At the moment, the LAMP LAMP can give an alarm and is normally on, and the LAMP LAMP can give an alarm and is normally on to prompt the end of the test. And in the default output state, the LAMP is in the off state.
The external liquid crystal display module can display the current tested time, the current value of the loop and the temperature value of the pin thermocouple at the male end in real time.
After the test is finished, whether the vehicle-mounted connector is qualified or not is judged according to the temperature of the vehicle-mounted contact pin thermocouple in the test process by observing whether the appearance of the vehicle-mounted connector is damaged due to overcurrent or not and the plugging force of the vehicle-mounted connector.
Claims (5)
1. The utility model provides a detect on-vehicle connector overcurrent performance's circuit arrangement which characterized in that: the device comprises a constant current source (1), a power resistor (2), a lead (3), a high-low temperature box (4), a female end pin (5), a male end pin (6), a thermocouple sensor (7), a display module (10), a controller (11) and a switching power supply (12); the vehicle-mounted connector is formed by a female end pin (5) and a male end pin (6), the female end pin (5) and the male end pin (6) are installed in a high-low temperature box (4), the female end pin (5) and the male end pin (6) are in butt electrical connection, a thermocouple sensor (7) is installed on the male end pin (6), the thermocouple sensor (7) is electrically connected to a controller (11), the male end pin (6) is electrically connected to the negative electrode of a constant current source (1) through the controller (11), the positive electrode of the constant current source (1) is electrically connected with the female end pin (5) through a power resistor (2), and the controller (11) is respectively connected with a display module (10) and a switching power supply (12); the controller (11) comprises a relay (8), a current sampling resistor (9) and a singlechip circuit (13); the single chip microcomputer circuit (13) is respectively connected with the relay (8), the current sampling resistor (9), the display module (10) and the switch power supply (12), the male-end contact pin (6) is connected to the negative electrode of the constant current source (1) after sequentially passing through the relay (8) and the current sampling resistor (9), and the thermocouple sensor (7) is connected to the single chip microcomputer circuit (13).
2. The circuit device for detecting overcurrent performance of an on-board connector according to claim 1, wherein: the single-chip microcomputer circuit (13) comprises a single-chip microcomputer IC2 and a step-down voltage stabilizer IC1, a resistor R1 is connected in series between an EXTAL pin and an XTAL pin of the single-chip microcomputer IC2, the EXTAL pin and the XTAL pin of the single-chip microcomputer IC2 are respectively connected with two ends of a crystal oscillator Y1, and two ends of the crystal oscillator Y1 are respectively grounded through a capacitor C2 and a capacitor C3; the RST pin of the singlechip IC2 is grounded through a capacitor C4, the RST pin of the singlechip IC2 is connected to a power supply voltage VCC through a resistor R2, the PAD08 pin of the singlechip IC2 is connected to the base electrode of a triode Q41, the collector electrode of the triode Q41 is connected to the power supply voltage VCC through an indicator lamp D2, and the emitter electrode of the triode Q41 is grounded; a PAD03 pin of the singlechip IC2 is connected with the output end of the thermocouple sensor (7); an INPUT pin of the step-down voltage regulator IC1 is connected to one end of a power supply interface J1 through a diode D1, the other end of the power supply interface J1 is grounded, an OUTPUT pin of the step-down voltage regulator IC1 is grounded through a capacitor C1, and two ends of the power supply interface J1 are connected with a switching power supply (12) in parallel; a PP0 pin of the singlechip IC2 is connected to a base electrode of a triode Q1, a collector electrode of the triode Q1 is connected to power supply voltage through an armature coil part of a RELAY RELAY1, and an emitter electrode of the triode Q1 is grounded; one end of a switch electric control part of a RELAY RELAY1 is connected to one end of a connection interface J2, the other end of the switch electric control part of a RELAY RELAY1 is connected to a VIN-end of a current sampling chip INA193, an OUT end of the current sampling chip INA193 is connected to a PAD08 pin of a singlechip IC2 through a resistor R7, a PAD08 pin of a singlechip IC2 is grounded through a resistor R6 and a capacitor C6, a VIN-end of the current sampling chip INA193 is connected to a VIN + end of the current sampling chip INA193 through a current sampling resistor R8, a VIN + end of the current sampling chip INA193 is connected to the other end of the connection interface J2, and three ends of the connection interface J2 are connected with a common terminal pin (6) and a negative electrode of a constant current source.
3. The circuit device for detecting overcurrent performance of an on-board connector according to claim 1, wherein: and a relay (8), a current sampling resistor (9) and a singlechip circuit (13) in the controller (11) are integrated on the same circuit board.
4. The circuit device for detecting overcurrent performance of an on-board connector according to claim 1, wherein: the high-low temperature box is a closed box body for providing different temperatures.
5. The circuit device for detecting overcurrent performance of an on-board connector according to claim 1, wherein: and a thermocouple sensor (7) is attached to the surface of the male end contact pin (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922087057.0U CN211653017U (en) | 2019-11-28 | 2019-11-28 | Circuit device for detecting overcurrent performance of vehicle-mounted connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922087057.0U CN211653017U (en) | 2019-11-28 | 2019-11-28 | Circuit device for detecting overcurrent performance of vehicle-mounted connector |
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| Publication Number | Publication Date |
|---|---|
| CN211653017U true CN211653017U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922087057.0U Expired - Fee Related CN211653017U (en) | 2019-11-28 | 2019-11-28 | Circuit device for detecting overcurrent performance of vehicle-mounted connector |
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| CN (1) | CN211653017U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112630652A (en) * | 2020-11-30 | 2021-04-09 | 摩登汽车(盐城)有限公司 | Method for testing maximum current level of vehicle-mounted connector |
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2019
- 2019-11-28 CN CN201922087057.0U patent/CN211653017U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112630652A (en) * | 2020-11-30 | 2021-04-09 | 摩登汽车(盐城)有限公司 | Method for testing maximum current level of vehicle-mounted connector |
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Granted publication date: 20201009 Termination date: 20211128 |