CN-224233080-U - Charging and discharging gun

Abstract

The utility model discloses a charge-discharge gun which comprises a gun head main body and a plug end connected to the gun head main body, wherein a first circuit board is arranged in the gun head main body, a metal contact pin used for being connected with a butt joint fitting is arranged on the plug end, a second circuit board is arranged in the plug end and is electrically connected with the metal contact pin, a first resistor and a first temperature switch are electrically connected to the second circuit board, the first temperature switch is used for detecting the temperature of the plug end, a circuit is automatically connected if the temperature is in a threshold range, or the circuit is disconnected if the temperature exceeds the threshold range, the first resistor is used for identifying that the butt joint fitting connected with the plug end corresponds to a charging mode or a discharging mode, and an MCU (micro control unit) module on the first circuit board reads the resistance value of the first resistor and controls the charge-discharge gun to enter the charging mode or the discharging mode. The utility model realizes identity recognition and temperature monitoring through a simple circuit, and has low cost and good applicability.

Inventors

• Yan Shanmao
• YANG SHANJIN
• ZHANG XUEGONG

Assignees

• 著赫(厦门)新能源技术有限公司

Dates

Publication Date

20260512

Application Date

20250513

Claims (10)

1. 1. The charge-discharge gun comprises a gun head main body and a plug end connected to the gun head main body, wherein a first circuit board is arranged in the gun head main body, an MCU module is arranged on the first circuit board, and the plug end and the gun head main body are integrally arranged or plug-in type, and the charge-discharge gun is characterized in that: the plug end is provided with a metal contact pin for connecting with the butt joint fitting; the plug end is internally provided with a second circuit board which is electrically connected with the metal contact pin; The first resistor is used for identifying that a butt joint accessory connected with the plug end corresponds to a charging mode or a discharging mode, and an MCU module on the first circuit board reads the resistance value of the first resistor and controls the charging and discharging gun to enter the charging mode or the discharging mode.
2. 2. The charge and discharge gun according to claim 1, wherein the plug end and the gun head main body are arranged in a plug-in type, and the plug end comprises a high-gear charging plug, a low-gear charging plug and a discharging plug; The second circuit boards of the high-gear charging plug, the low-gear charging plug and the discharging plug comprise a first resistor and a first temperature switch connected in series with the first resistor, and the resistance values of the first resistors on the high-gear charging plug, the low-gear charging plug and the discharging plug are different.
3. 3. The charge and discharge gun according to claim 1, wherein the plug end and the gun head main body are integrated, and the metal plug pin on the plug end is arranged as one; The second circuit board is provided with a terminal group, the terminal group is provided with two ports, namely a first port and a second port, the second port is connected to the ground, the first port is connected with the first temperature switch to the metal contact pin in series, and the first resistor is connected between the first port and the second port in parallel.
4. 4. The charge and discharge gun of claim 3, further comprising a first protection diode connected in parallel between the first port and the second port.
5. 5. The charge and discharge gun according to claim 3, further comprising a first micro switch connected to the first temperature switch, wherein the first micro switch is provided with a normally-closed pin, a normally-open pin and a common pin, the common pin is connected with the normally-closed pin to conduct a circuit, and the first micro switch is pressed to connect the common pin with the normally-open pin to disconnect the circuit.
6. 6. The charge-discharge gun according to any one of claims 3 to 5, wherein the butt-joint fitting is an adapter or a discharge socket; The adapter is provided with a first connecting jack matched with the metal contact pin, a third circuit board is arranged on the adapter, a second resistor, a second temperature switch, a third resistor and a second protection diode are arranged on the third circuit board, the second temperature switch is used for detecting the temperature of the adapter, and the circuit is automatically switched on if the temperature is within a threshold range or is switched off if the temperature exceeds the threshold range; The discharging socket is provided with a second connection jack matched with the metal pin, the discharging socket is provided with a fourth circuit board, the fourth circuit board is provided with a fourth resistor, a third temperature switch, a fifth resistor and a third protection diode, the third temperature switch is used for detecting the temperature of the discharging socket, if the temperature is in a threshold range, a circuit is automatically connected, or if the temperature exceeds the threshold range, the circuit is disconnected, the fourth resistor is connected with the third temperature switch in series, the fifth resistor is connected with the end parts of the fourth resistor and the third temperature switch in parallel, the third protection diode is connected with the end parts of the fourth resistor and the third temperature switch in parallel, and when the metal pin is inserted into the second connection jack, the second circuit board is electrically connected with the fourth circuit board.
7. 7. The charge and discharge gun according to claim 1, wherein the plug end and the gun head main body are integrated, and two metal pins are arranged on the plug end, and the charge and discharge gun further comprises a first micro switch; the second circuit board is provided with a terminal group, and the terminal group is provided with three ports, namely a first port, a second port and a third port; The first port is connected to the ground, and the second port and the third port are respectively connected to the two metal pins; The third port is connected in series with a first temperature switch and a first resistor, and the first protection diode is connected in parallel between the first port and the third port; The second port is connected to the first micro switch, the first micro switch is provided with a normally closed pin, a normally open pin and a public pin, the public pin is connected with a conducting circuit through the normally closed pin, the normally closed pin is connected with the first temperature switch, the first micro switch is pressed to enable the public pin to be connected with the normally open pin, and therefore a circuit of the second port is disconnected.
8. 8. The charge and discharge gun of claim 7, further comprising a protection diode connected in parallel between the first port and the third port.
9. 9. The charge and discharge gun according to claim 7, wherein the butt joint fitting is an adapter, and two first connection jacks respectively matched with the two metal pins are arranged on the adapter; the adapter is provided with a third circuit board, the third circuit board is provided with a second resistor, a second temperature switch, a third resistor and a second protection diode, the second temperature switch is used for detecting the temperature of the adapter, if the temperature is in a threshold range, a circuit is automatically connected, or if the temperature exceeds the threshold range, the circuit is disconnected, the second resistor is connected with the second temperature switch in series, the third resistor is connected with the ends of the second resistor and the second temperature switch in parallel, the second protection diode is connected with the ends of the second resistor and the second temperature switch in parallel, and when the metal contact pin is inserted into the first connecting jack, the second circuit board is electrically connected with the third circuit board.
10. 10. The charge and discharge gun according to claim 7, wherein the butt joint fitting is a discharge socket, and two second connection jacks respectively matched with the two metal pins are arranged on the discharge socket; The discharging socket is provided with a fourth circuit board, the fourth circuit board is provided with a fourth resistor, a third temperature switch, a fifth resistor and a third protection diode, the third temperature switch is used for detecting the temperature of the discharging socket, a circuit is automatically connected if the temperature is in a threshold range, or the circuit is disconnected if the temperature exceeds the threshold range, the fourth resistor is connected with the third temperature switch in series, the fifth resistor is connected with the end parts of the fourth resistor and the third temperature switch in parallel, the third protection diode is connected with the end parts of the fourth resistor and the third temperature switch in parallel, and when the metal pin is inserted into the second connecting jack, the second circuit board is electrically connected with the fourth circuit board.

Description

Charging and discharging gun Technical Field The utility model relates to the technical field of charging and discharging of new energy automobiles, in particular to a charging and discharging gun. Background The charge-discharge gun is a device with a charge or discharge function. In the charging and discharging process, the butt joint fittings of the butt joint conversion head or the discharging socket are required to be subjected to identity recognition, so that the gun body executes corresponding charging or discharging operation, and meanwhile, when the charging or discharging gun is charged or discharged, the gun head has over-high internal temperature and has potential safety hazards, so that the temperature is required to be monitored. The patent with the publication number CN 117284114A provides a charging and discharging integrated gun identity recognition control module and a control circuit using the same, an identity recognition chip is arranged on a plug end of a gun head, identity recognition information on the identity recognition chip is read through an MCU module of the gun head, so that the identity recognition is carried out, and the identity recognition chip is set to be a temperature sensor chip with an identity recognition function, so that the temperature is monitored, but by adopting the mode, the cost of the chip is high, and the large-scale popularization and use are not facilitated. Disclosure of utility model The utility model aims to provide a charge-discharge gun which realizes identity recognition and temperature monitoring through a simple circuit, and has low cost and good applicability. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The utility model discloses a charge-discharge gun, which comprises a gun head main body and a plug end connected to the gun head main body, wherein a first circuit board is arranged in the gun head main body, an MCU module is arranged on the first circuit board, and the plug end and the gun head main body are integrally arranged or are in plug-in type. The plug end is provided with a metal contact pin for being connected with the butt joint fitting. The plug end is internally provided with a second circuit board which is electrically connected with the metal contact pin, the second circuit board is electrically connected with a first resistor and a first temperature switch, and the first temperature switch is used for detecting the temperature of the plug end, and if the temperature is in a threshold range, the circuit is automatically switched on, or if the temperature exceeds the threshold range, the circuit is switched off. The MCU module on the first circuit board reads the resistance value of the first resistor and controls the charging and discharging gun to enter the charging mode or the discharging mode. In an embodiment, the plug end and the gun head main body are in a plug-in type, and the plug end comprises a high-gear charging plug, a low-gear charging plug and a discharging plug. The second circuit boards of the high-gear charging plug, the low-gear charging plug and the discharging plug comprise a first resistor and a first temperature switch connected in series with the first resistor, and the resistance values of the first resistors on the high-gear charging plug, the low-gear charging plug and the discharging plug are different. In other embodiments, the plug end and the gun head main body are integrated, and the metal pin on the plug end is arranged as one. The second circuit board is provided with a terminal group, the terminal group is provided with two ports, namely a first port and a second port, the second port is connected to the ground, the first port is connected with the first temperature switch to the metal contact pin in series, and the first resistor is connected between the first port and the second port in parallel. Further, the circuit further comprises a first protection diode, wherein the first protection diode is connected in parallel between the first port and the second port. Preferably, the temperature sensor further comprises a first micro switch, wherein the first micro switch is connected to the first temperature switch, a normally-closed pin, a normally-open pin and a public pin are arranged on the first micro switch, the public pin is connected with the normally-closed pin to conduct a circuit, and the first micro switch is pressed to enable the public pin to be connected with the normally-open pin to disconnect the circuit. Wherein, the butt joint fitting is an adapter or a discharging socket. The adapter is provided with a first connection jack matched with the metal contact pin. The adapter is provided with a third circuit board, the third circuit board is provided with a second resistor, a second temperature switch, a third resistor and a second protection diode, the second temperature switch is used for detecting the temperature of the ada