Insert with opening and closing function and safety type 4PIN electrical connector female connector

Abstract

The present invention relates to a plug with an opening and closing function and a safety type 4PIN electrical connector female connector, wherein the plug includes a conductive tube body at the front end, a conductive column at the rear end, and an insulating connecting rod located between the tube body and the column for connecting the tube body and the column, and the tube body and the column are connected by a micro switch. The safety type 4PIN electrical connector female connector includes a female base, and the female base is provided with two power sockets parallel to each other and two signal sockets parallel to the power sockets, the two power sockets are fixedly plugged with power plugs, the two signal sockets are fixedly plugged with signal plugs, the signal plugs are the above-mentioned plugs with opening and closing functions, a through hole is provided on the tube wall of the power plug, the micro switches on the two signal plugs are arranged one by one on one side of the power plug, and the buttons of the micro switches pass through the through holes on the corresponding power plugs and are inserted into the power plugs.

Description

Technical Field

[0001] The invention relates to an insertion tube with opening and closing functions and a safety type 4PIN electric connector female connector. Background Art

[0002] With the popularity of new energy vehicles, more and more electrical connectors are used to charge new energy vehicles. In order to increase the charging speed of new energy vehicles and shorten the waiting time for charging, high voltage and high current charging are currently adopted. However, not all batteries are suitable for high voltage and large circuit charging, and the residual capacity of the battery is different, so the charging voltage and current also need to be changed accordingly to reduce the damage caused to the battery by charging.

[0003] In order to achieve the above goals, an electrical connector with signal transmission function came into being. This electrical connector has at least three circuits, two of which are the positive and negative poles of the power supply, and the remaining circuits are communication circuits, also called signal circuits. The signal circuit is used to establish a communication connection between the charging management system on the charger side and the battery management system on the battery side. When the two power circuits of the electrical connector are connected, the battery management system is powered on and works. After confirming that a reliable communication connection has been established with the charging management system, it will send battery status information to the charging management system. The charging management system controls the charger to output a reasonable charging voltage and current based on the battery status information, so as to charge the battery safely and efficiently.

[0004] However, in practice, when the male and female connectors of the electrical connector are in a critical contact state, since the power circuit and communication circuit established between the electrical connectors are in a state of being neither disconnected nor broken, the battery management system obtains an unstable voltage, which can easily cause the battery management system to send erroneous battery status information, leading to misoperation of the charging management system, and controlling the charger to output high voltage and high current, which can easily cause electric sparks between the male and female connectors, causing damage to the connector or battery.

[0005] In order to avoid this situation, an effective technical solution is to design the power pin of the male connector to be longer than the signal pin, so that the power pin can be connected to the female connector before the signal pin, that is, the power circuit of the connector is effectively connected first, and after providing a stable voltage to the battery management system, the communication circuit of the connector is connected to avoid the above problems. However, this design directly leads to an increase in the size of the connector, making the connector more clumsy to use. In order to match the longer power pin, the axial length of the female connector also needs to be increased, which in turn increases the requirements for the installation space of the female connector on the battery side, making the battery module of new energy vehicles more bulky. Summary of the invention

[0006] The first technical problem to be solved by the present invention is: to provide a plug with an opening and closing function. By applying this plug to the female connector of the electrical connector, after the male connector and the female connector of the electrical connector are reliably connected, the communication circuit of the electrical connector can be connected by closing the plug, thereby eliminating the erroneous operation of the charger charging management system.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a cannula with an opening and closing function, including a conductive tube body located at the front end, a conductive column located at the rear end, and an insulating connecting rod located between the tube body and the column for connecting the tube body and the column, and the tube body and the column are connected by a micro switch.

[0008] The technical problem further to be solved by the present invention is: to provide a safe 4PIN electrical connector female connector for battery charging, which female connector does not require extension of the axial dimension and does not require structural improvement of the male connector, and can eliminate erroneous operation of the charger charging management system.

[0009] In order to solve the above technical problems, the technical solution adopted by the present invention is: a safety type 4PIN electrical connector female connector, including a female base, on which two power sockets parallel to each other and two signal sockets parallel to the power sockets are opened, power plugs are fixedly inserted in the two power sockets, and signal plugs are fixedly inserted in the two signal sockets. The signal plugs are the above-mentioned plugs with opening and closing functions, a through hole is opened on the tube wall of the power plug, and the micro switches on the two signal plugs are arranged one by one on one side of the power plug, and the buttons of the micro switches pass through the through holes on the corresponding power plugs and are inserted into the power plugs.

[0010] As a preferred solution, the button end of the micro switch is a hemispherical surface or an inclined surface facing the front end of the power plug.

[0011] As a preferred solution, the button of the micro switch is inserted into the power supply plug to a depth equal to the stroke of closing the micro switch.

[0012] As a preferred solution, the rear ends of a power jack and a signal jack are connected to each other through a groove formed on the female base, and the groove is used to install a micro switch.

[0013] The beneficial effects of the present invention are as follows: the present invention provides a plug with an opening and closing function, so that a female connector using such a plug can disconnect the plug or close the plug as needed. When the plug with an opening and closing function is used as a signal plug, after the male connector and the female connector of the electrical connector are reliably connected, the micro switch can be used to close the plug to connect the communication circuit of the electrical connector, thereby eliminating erroneous operation of the charger charging management system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0015] Figure 1 is a schematic structural diagram of the cannula with opening and closing functions according to the present invention;

[0016] Figure 2 is a three-dimensional structural view of the female connector of the present invention;

[0017] Figure 3 is a cross-sectional view of the female connector of the present invention;

[0018] Figure 1~Figure 3 Middle: 1. Female base, 2. Power jack, 3. Signal jack, 4. Power plug, 5. Signal plug, 6. Through hole, 7. Groove, 8. Power pin, 9. Plug, 100. Tube body, 200. Column, 300. Connecting rod, 400. Micro switch. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] like Figure 1 The present invention shows a cannula with an opening and closing function, which includes a conductive tube body 100 at the front end, a conductive column 200 at the rear end, and an insulating connecting rod 300 located between the tube body 100 and the column 200 for connecting the tube body 100 and the column 200. The tube body 100 and the column 200 are connected by a micro switch 400. The micro switch 400 can control the on-off relationship between the tube body 100 and the column 200. When in use, the micro switch 400 can be exposed on the outer surface of the female connector of the electrical connector. After the male connector and the female connector are reliably connected, the micro switch 400 is pressed, and the cannula is turned on. Since the micro switch over-point current should not be too large, it is not recommended to be used in high current transmission circuits. The cannula is more suitable for use in communication circuits.

[0021] like Figure 2 and Figure 3The figure shows the female connector of the safety 4PIN electrical connector of the present invention, which includes a female base 1, on which two power sockets 2 and two signal sockets 3 parallel to the power sockets 2 are provided, and power plugs 4 are fixedly plugged into the two power sockets 2, and signal plugs 5 are fixedly plugged into the two signal sockets 3, and the signal plugs 5 are the plugs with the opening and closing functions mentioned above, and a through hole 6 is provided on the wall of the power plug 4, and the micro switches 400 on the two signal plugs 5 are arranged one by one on one side of the power plug 4, and the buttons of the micro switches 400 are inserted into the power plug 4 through the through holes 6 on the corresponding power plug 4. The micro switches 400 are preferably arranged at the rear of the power plug 4, as long as the micro switches 400 can be triggered by the power plug of the male connector, the further back the micro switch 400 is arranged, the more stable and reliable the connection between the power plug and the power plug 4 is when it is triggered.

[0022] In this embodiment, the button end of the micro switch 400 is a hemispherical surface or a slope facing the front end of the power plug 4, so as to reduce the resistance of the button to the male connector power pin when inserting the power plug 4, and also ensure that the button can be reliably pressed to turn on the micro switch 400.

[0023] The button of the micro switch 400 is inserted into the power plug 4 to a depth equal to the stroke of closing the micro switch 400, so as to ensure that the micro switch 400 can be turned on when the button is pressed.

[0024] In this embodiment, the rear ends of a power socket 2 and a signal socket 3 are connected to each other through a groove 7 provided on the female connector base 1 , and the groove 7 is used for installing a micro switch 400 .

[0025] In actual operation, in order to avoid interference of the power circuit on the communication circuit, a shielding layer may be provided between the power plug 4 and the signal plug 5. The button length of the micro switch 400 may also be extended to increase the distance between the power plug 4 and the signal plug 5. In order to avoid short circuit at the rear ends of the power plug 4 and the signal plug 5, an insulating plug 9 may be embedded in the groove 7 to block the rear end of the groove 7, and the rear end of the female connector base 1 may be encapsulated.

[0026] The working process of the present invention is: Figure 1~Figure 3As shown, when the power pin 8 of the male connector is just inserted into the power plug 4, the micro switch is in the off state. At this time, the communication circuit of the electrical connector is disconnected. When the power pin 8 continues to penetrate into the power plug 4, the power pin 8 and the power plug 4 have been reliably connected, and a stable voltage can be provided to the battery management system. When the power pin 8 penetrates further into the power plug 4 until the button of the micro switch 400 is pressed, the micro switch 400 is closed, and the communication circuit of the electrical connector is closed. At this time, the battery management system and the charging management system establish a stable communication connection. The battery management system will not send erroneous battery status information due to voltage instability, and the charging management system will not cause misoperation. The charger is controlled to output unreasonable voltage and current, thereby ensuring efficient and safe charging of the battery.

[0027] The above embodiments are only illustrative of the principles and effects of the invention, as well as some embodiments of its application, and are not intended to limit the invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. A safety type 4PIN electrical connector female connector, comprising a female base (1), the female base (1) being provided with two mutually parallel power sockets (2) and two signal sockets (3) parallel to the power sockets (2), the two power sockets (2) being fixedly plugged with power plugs (4), the two signal sockets (3) being fixedly plugged with signal plugs (5), characterized in that: The signal plug (5) comprises a conductive tube body (100) located at the front end, a conductive column (200) located at the rear end, and an insulating connecting rod (300) located between the tube body (100) and the column (200) and used to connect the tube body (100) and the column (200); the tube body (100) and the column (200) are connected via a micro switch (400); A through hole (6) is provided on the wall of the power plug (4); the micro switches (400) on the two signal plugs (5) are arranged one by one on one side of the power plug (4); the buttons of the micro switches (400) pass through the through holes (6) on the corresponding power plugs (4) and are inserted into the power plugs (4); the button ends of the micro switches (400) are hemispherical or inclined toward the front end of the power plug (4); The rear ends of a power socket (2) and a signal socket (3) are connected to each other via a groove (7) formed on the female base (1), and the groove (7) is used to install a micro switch (400).

2. A safety 4PIN electrical connector female connector according to claim 1, characterized in that: The button of the micro switch (400) is inserted into the power plug (4) to a depth equal to the stroke of closing the micro switch (400).

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