A connection detection structure for a plug and a socket
By using resistive voltage division technology in the connection detection structure of the plug and socket, the voltage of the second pole sheet is changed, so as to determine whether the plug and socket are reliable connected by the MCU detection voltage, the problem that the existing technology cannot accurately judge the connection reliability of the plug and socket is solved, and the accurate detection of the connection status of the plug and socket is achieved.
Patent Information
- Application Number
- CN202420022041.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-04
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-01-04
AI Technical Summary
The prior art cannot accurately judge the connection reliability of plugs and sockets, especially in the field of high-voltage electric vehicles, where traditional high-voltage interlocking mechanisms cannot accurately judge when the connector is loose.
A connection detection structure between a plug and a socket is designed. By setting a first pole piece and a second pole piece in the socket and setting a third pole piece in the plug, the voltage of the second pole piece is changed by using resistive voltage division technology, so as to determine whether the plug and the socket are reliablely connected by the MCU detection voltage.
Accurate detection of the reliability of the connection between the plug and the socket can be determined by detecting the CN_AD voltage, avoiding high-voltage safety hazards caused by poor connection.
Smart Images
Figure CN222748692U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an electrical connection structure, in particular to a plug and a socket. Background Art
[0002] With the development of the electric vehicle industry, high-voltage safety issues have become the primary issue for electric vehicles. It is very important to ensure that the high-voltage connection of the entire electric vehicle is reliable. Currently, the common means of high-voltage safety are only the reliability detection of high-voltage component connections, which cannot really play an accurate role in judgment. Traditional connectors are designed to confirm the connection status only by the high-voltage interlocking mechanism, but cannot accurately judge when the connector is loose. Utility Model Content
[0003] The main technical problem to be solved by the utility model is to provide a connection detection structure of a plug and a socket, which can realize the connection reliability detection of the plug and the socket.
[0004] In order to solve the above technical problems, the utility model provides a connection detection structure of a plug and a socket, comprising a first pole piece and a second pole piece arranged in the socket, and a third pole piece arranged in the plug;
[0005] The first electrode is connected to a power supply voltage, and the second electrode is connected to a reference ground; a resistor is connected to at least one point between the first electrode and the power supply voltage and between the second electrode and the reference ground;
[0006] When the plug is connected to the socket, the third pole piece conductively connects the first pole piece to the second pole piece, so that the power supply voltage is connected to the reference ground through the resistor to change the voltage of the second pole piece.
[0007] In a preferred embodiment: the first electrode is connected to the power supply voltage through a resistor R1, and the second electrode is connected to the reference ground through a resistor R2.
[0008] In a preferred embodiment: when the first pole piece and the second pole piece are disconnected, the voltage of the second pole piece is 0; when the first pole piece and the second pole piece are conductively connected, the voltage of the second pole piece is VCC*R2 / (R1+R2), wherein VCC is the power supply voltage.
[0009] In a preferred embodiment: the socket is also provided with a first power negative pole piece "-", a first power positive pole piece "+", a first communication pole piece "CANH" and a first communication pole piece "CANL".
[0010] In a preferred embodiment: the plug is correspondingly provided with a second power negative pole piece "-", a second power positive pole piece "+", a second communication pole piece "CANH" and a second communication pole piece "CANL".
[0011] In a preferred embodiment: the height of the first power negative electrode plate "-" is greater than the height of the first power positive electrode plate "+".
[0012] In a preferred embodiment: the height of the first communication pole piece "CANH" is the same as the height of the first communication pole piece "CANL", and is smaller than the height of the first power positive pole piece "+".
[0013] In a preferred embodiment: the height of the first pole piece and the second pole piece is the same, and is smaller than the height of the first communication pole piece "CANH" and the first communication pole piece "CANL".
[0014] In a preferred embodiment: the second power negative pole piece "-", the second power positive pole piece "+", the second communication pole piece "CANH", the second communication pole piece "CANL" and the third pole piece are of the same height.
[0015] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:
[0016] The utility model provides a connection detection structure for a plug and a socket. When the plug and the socket are reliably connected, the third pole piece of the plug connects the first pole piece and the second pole piece of the socket together, and the CN_AD voltage on the second pole piece is equal to the voltage divided by the resistors R1 and R2, that is, VCC*R2 / (R1+R2); if the plug and the socket are not reliably connected, the CN_AD voltage is 0V at this time; therefore, it can be determined whether the plug and the socket are reliably connected by detecting the CN_AD voltage through the MCU. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of a pole piece of a plug in a preferred embodiment of the utility model;
[0018] Figure 2 This is a schematic diagram of a pole piece of a socket in a preferred embodiment of the utility model;
[0019] Figure 3 This is a circuit diagram of the first pole piece and the second pole piece in a preferred embodiment of the utility model. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.
[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships described in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "installed / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.
[0023] The utility model provides a connection detection structure of a plug and a socket, comprising a first pole piece 1 and a second pole piece 2 arranged in the socket, and a third pole piece 3 arranged in the plug; the socket is also provided with a first power negative pole piece "-", a first power positive pole piece "+", a first communication pole piece "CANH" and a first communication pole piece "CANL". The plug is correspondingly provided with a second power negative pole piece "-", a second power positive pole piece "+", a second communication pole piece "CANH" and a second communication pole piece "CANL".
[0024] Moreover, the height of the first power negative pole piece "-" is greater than the height of the first power positive pole piece "+". The height of the first communication pole piece "CANH" is the same as that of the first communication pole piece "CANL", and is less than the height of the first power positive pole piece "+". The height of the first pole piece 1 and the second pole piece 2 is the same as that of the first communication pole piece "CANH" and the first communication pole piece "CANL". The height of the second power negative pole piece "-", the second power positive pole piece "+", the second communication pole piece "CANH", the second communication pole piece "CANL" and the third pole piece 3 are the same.
[0025] To realize connection detection of the plug and the socket, the first pole piece 1 is connected to the power supply voltage, and the second pole piece 2 is connected to the reference ground; the first pole piece 1 is connected to the power supply voltage through the resistor R1, and the second pole piece 2 is connected to the reference ground through the resistor R2.
[0026] When the plug is connected to the socket, the third pole piece 3 conductively connects the first pole piece 1 to the second pole piece 2 so that the power supply voltage is connected to the reference ground through the resistor to change the voltage of the second pole piece 2 .
[0027] Specifically, when the first pole piece 1 and the second pole piece 2 are disconnected, the voltage of the second pole piece 2 is 0; when the first pole piece 1 and the second pole piece 2 are conductively connected, the voltage of the second pole piece 2 is VCC*R2 / (R1+R2), wherein VCC is the power supply voltage.
[0028] Therefore, when the plug and the socket are reliably connected, the third pole piece 3 of the plug connects the first pole piece 1 and the second pole piece 2 of the socket together, and the CN_AD voltage on the second pole piece 2 is equal to the voltage divided by the resistors R1 and R2, that is, VCC*R2 / (R1+R2); if the plug and the socket are not reliably connected, the CN_AD voltage is 0V at this time; therefore, the MCU can detect the CN_AD voltage to determine whether the plug and the socket are reliably connected.
[0029] The height settings of the first power negative pole piece "-", the first power positive pole piece "+", the first communication pole piece "CANH" and the first communication pole piece "CANL" can make the power negative pole piece "-" complete the connection first, and then the power positive pole piece "+" complete the connection; after the power connection is completed, the first communication pole piece "CANH" and the first communication pole piece "CANL" complete the communication connection.
[0030] The above is only a preferred specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the utility model within the technical scope disclosed by the utility model shall be deemed to infringe the protection scope of the utility model.
Claims
1. A connection detection structure for a plug and a socket, characterized in that: It includes a first pole piece and a second pole piece arranged in the socket, and a third pole piece arranged in the plug; The first electrode piece is connected to a power supply voltage, and the second electrode piece is connected to a reference ground; A resistor is connected at least at one point between the first electrode and the power supply voltage, and between the second electrode and the reference ground; When the plug is connected to the socket, the third pole piece conductively connects the first pole piece to the second pole piece, so that the power supply voltage is connected to the reference ground through the resistor to change the voltage of the second pole piece.
2. A connection detection structure for a plug and a socket according to claim 1, characterized in that: The first electrode is connected to the power supply voltage through a resistor R1, and the second electrode is connected to the reference ground through a resistor R2.
3. A connection detection structure for a plug and a socket according to claim 2, characterized in that: When the first pole piece and the second pole piece are disconnected, the voltage of the second pole piece is 0; when the first pole piece and the second pole piece are conductively connected, the voltage of the second pole piece is VCC*R2 / (R1+R2), wherein VCC is the power supply voltage.
4. A connection detection structure for a plug and a socket according to claim 1, characterized in that: The socket is also provided with a first power negative pole piece "-", a first power positive pole piece "+", a first communication pole piece "CANH" and a first communication pole piece "CANL".
5. A connection detection structure for a plug and a socket according to claim 4, characterized in that: The plug is correspondingly provided with a second power negative pole piece "-", a second power positive pole piece "+", a second communication pole piece "CANH" and a second communication pole piece "CANL".
6. A connection detection structure for a plug and a socket according to claim 4, characterized in that: The height of the first power negative electrode plate "-" is greater than the height of the first power positive electrode plate "+".
7. A connection detection structure for a plug and a socket according to claim 6, characterized in that: The height of the first communication pole piece "CANH" is the same as the height of the first communication pole piece "CANL", and is smaller than the height of the first power positive pole piece "+".
8. A connection detection structure for a plug and a socket according to claim 7, characterized in that: The heights of the first pole piece and the second pole piece are the same, and are smaller than the heights of the first communication pole piece "CANH" and the first communication pole piece "CANL".
9. A connection detection structure for a plug and a socket according to claim 5, characterized in that: The second power negative pole piece "-", the second power positive pole piece "+", the second communication pole piece "CANH", the second communication pole piece "CANL" and the third pole piece have the same height.