Connector with disconnecting switch and high-voltage box

Abstract

The utility model provides a connector with an isolating switch and a high-voltage box, the connector comprises the isolating switch with a socket and a plug inserted in the corresponding socket, and the plug comprises a positive plug and a negative plug; the plug comprises a plug main body and a lead end, the socket is provided with a slot, and the plug main body is inserted into the slot; a current-carrying sheet is arranged in the plug main body, a current-carrying sheet groove matched with the current-carrying sheet is arranged in the slot, and the current-carrying sheet is embedded in the current-carrying sheet groove. Through the mutual connection of the disconnecting switch and the connector box, the installation process is simpler and more convenient, the complexity of installation and maintenance is reduced, meanwhile, potential fault points are reduced, and the reliability of connection and the stability of the system are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell manufacturing, in particular to a connector with an isolating switch and a high-voltage box. Background Art

[0002] In power systems, high-voltage power boxes are critical equipment responsible for providing stable high-voltage power. They integrate a variety of electrical components, including disconnectors and connectors. The performance of these components plays a decisive role in the overall stability and reliability of the high-voltage box. Disconnectors primarily connect or disconnect circuits, while connectors interconnect different components within a circuit. Current technology typically designs disconnectors and connectors separately, each fulfilling distinct functional roles.

[0003] However, this independent design approach has exposed some problems in practical applications. First, due to the separate layout of the disconnector and connector, a larger space needs to be reserved inside the high-voltage box to install these two independent components, which not only increases the volume of the high-voltage box but also increases the manufacturing cost. Secondly, the disconnector and connector need to be operated separately during installation and maintenance, which undoubtedly increases the complexity and difficulty of the work. In addition, the independently designed disconnector and connector limit the possibility of an integrated design of the high-voltage box, affecting the design flexibility and overall aesthetics. Therefore, optimizing the design and integration of these components is of great significance to improving the performance and practicality of the high-voltage box. Utility Model Content

[0004] In order to solve the above problems, in a first aspect, the utility model provides a connector with an isolating switch, comprising an isolating switch provided with a socket and a plug inserted into the corresponding socket, wherein the plug comprises a positive plug and a negative plug;

[0005] The plug includes a plug body and a lead end, and the socket is provided with a slot, and the plug body is inserted into the slot;

[0006] A current-carrying sheet is provided inside the plug body, a current-carrying sheet groove matching the current-carrying sheet is provided in the slot, and the current-carrying sheet is engaged with the current-carrying sheet groove.

[0007] Furthermore, there are two current carriers and two current carrier slots respectively, and the current carriers and the current carrier slots are arranged parallel to each other.

[0008] Furthermore, interlocking terminals are provided between the carrier sheets, and interlocking grooves are provided between the carrier sheet slots. The interlocking terminals are placed in the interlocking grooves and fixedly connected to the sockets.

[0009] Furthermore, the lead end is arranged perpendicular to the socket and is used to introduce an external wire.

[0010] Furthermore, a locking assembly is provided at one end of the plug body, and guide shafts are provided on both sides of the socket body, and the locking assembly is connected to the plug body through the guide shafts.

[0011] Furthermore, a guide rail is provided on the locking assembly, and the guide rail is movably connected to the guide shaft, so that the locking assembly moves along the guide rail on the socket.

[0012] Furthermore, an electrical connector is provided on a surface of the socket at one end away from the plug. The electrical connector is fixedly connected to the surface of the socket and is used to connect the plug to an external device.

[0013] In a second aspect, the present invention further provides a high-voltage box, which uses the connector with an isolating switch as described in any one of the above items, wherein the high-voltage box is provided with a connection port matching the connector, and the connector is provided in plurality and plugged into the connection port;

[0014] An internal circuit is provided inside the high-voltage box, and the internal circuit includes a switch control unit, an input end, and an output end. The switch control unit is connected to the input end and the output end respectively; the electrical connection piece of the connector is electrically connected to the switch control unit.

[0015] Furthermore, an indicator light is provided between the connectors, and the indicator light is fixed on the outer surface of the high-voltage box;

[0016] The internal circuit further includes a BMS control unit, the indicator light is electrically connected to the BMS control unit, and the indicator light is used to display a high voltage power-on status.

[0017] Furthermore, a disconnect device and a COM terminal are provided on the surface of the high voltage box between the connectors.

[0018] The BMS control unit is electrically connected to the switch control unit via the disconnect device, and the COM terminal is electrically connected to an external communication interface on the BMS control unit.

[0019] Compared to existing technologies, this invention offers at least the following advantages: Because the isolator and connector are integrated into one, installation is simplified, reducing installation and maintenance complexity. The integrated isolator and connector reduce the space required within the high-voltage box, helping to reduce the overall size of the device. This also reduces potential points of failure, improving connection reliability and system stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0021] Figure 1 This is an overall schematic diagram of a connector in one embodiment of the present utility model;

[0022] Figure 2 This is a bottom view of a plug in one embodiment of the present utility model;

[0023] Figure 3 This is a three-dimensional schematic diagram of a plug in one embodiment of the present utility model;

[0024] Figure 4 This is a bottom view of a connector in one embodiment of the present utility model;

[0025] Figure 5 A top view of a connector in one embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the interior of a connector in one embodiment of the present utility model;

[0027] Figure 7 This is a schematic diagram of a high-voltage box in one embodiment of the present invention;

[0028] Figure 8 This is a three-dimensional schematic diagram of a high-voltage box in one embodiment of the present utility model;

[0029] Figure 9 This is a schematic diagram of the internal circuit of the high-voltage box in one embodiment of the present invention.

[0030] Among them, 1-socket; 11-slot; 111-carrier slot; 12-electrical connector; 2-plug; 21-plug body; 22-lead end; 211-carrier; 212-interlocking terminal; 213-interlocking slot; 214-locking assembly; 2141-guide rail; 215-guide shaft; 3-high-voltage box; 31-indicator light; 32-disconnect device; 33-COM terminal. DETAILED DESCRIPTION

[0031] The following is a more detailed description of a connector with an isolating switch and a high-voltage box according to the present invention, with reference to schematic diagrams. These diagrams illustrate preferred embodiments of the present invention. It should be understood that those skilled in the art may modify the present invention described herein while still achieving the beneficial effects of the present invention. Therefore, the following description should be understood as being generally known to those skilled in the art and not intended to limit the present invention.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0034] In the first aspect, the present invention provides a connector with an isolating switch, please refer to Figure 1 , including an isolating switch provided with a socket 1 and a plug 2 inserted into the corresponding socket, wherein the plug 2 includes a positive plug and a negative plug.

[0035] The plug 2 includes a plug body 21 and a lead end 22 . The socket 1 is provided with a slot 11 , and the plug body 21 is inserted into the slot 11 .

[0036] A carrier sheet 211 is provided inside the plug body 21 , and a carrier sheet groove 111 matching the carrier sheet 211 is provided in the slot 11 . The carrier sheet 211 is engaged with the carrier sheet groove 111 .

[0037] Specifically, this embodiment provides an innovative connector that integrates the functionality of an isolating switch. This design includes an isolating switch with a socket 1 and a corresponding plug 2, achieving the dual functions of connecting and disconnecting circuits. In this embodiment, the connector includes a positive plug 21 and a negative plug 22. Each plug 2 consists of a plug body 21 and a lead 22. The plug body 21 is designed to be inserted into the corresponding socket 1 on the isolating switch.

[0038] A current-carrying sheet 211 is located within the plug body 21, while a current-carrying sheet slot 111 mates with the current-carrying sheet 211 in the socket 2. When the plug body 21 is inserted into the socket 11, the current-carrying sheet 211 engages with the current-carrying sheet slot 111, forming a reliable electrical connection. Inserting or removing the plug body 21 from the socket 2 connects and disconnects the circuit. The engagement of the current-carrying sheet 211 with the current-carrying sheet slot 111 ensures good electrical conductivity when connected, while providing complete isolation when disconnected, ensuring safe operation.

[0039] Furthermore, two current carriers 211 and two current carrier slots are provided respectively, and the current carriers 211 and the current carrier slots 111 are arranged parallel to each other.

[0040] Specifically, two current-carrying sheets 211 and two current-carrying sheet slots 111 are each provided, providing a dual electrical connection path. This dual-path design increases current transmission capacity while improving connection reliability and redundancy. The two current-carrying sheets 211 and the two current-carrying sheet slots 111 are arranged parallel to each other. This layout ensures consistency and stability of the electrical connection, while also allowing for more precise and standardized manufacturing of plugs and sockets.

[0041] Through two parallel current-carrying sheets 211, the current can be evenly distributed, thereby reducing the heat load on each current-carrying sheet 211 and improving the heat dissipation performance and load-bearing capacity of the connector. The dual-current-carrying sheet design increases the contact area, thereby reducing contact resistance and reducing energy loss caused by poor contact. The parallel current-carrying sheets 211 and the current-carrying sheet slots 111 mechanically support each other, improving the mechanical strength of the connector and the stability of plug-in and plug-out operations. If one of the current-carrying sheets 211 or the current-carrying sheet slots 111 fails, the other can still maintain the circuit connection, providing convenience for maintenance and replacement.

[0042] Furthermore, interlocking terminals 212 are provided between the carrier sheets, and interlocking grooves 213 are provided between the carrier sheet slots 111 . The interlocking terminals 212 are placed in the interlocking grooves 213 and are fixedly connected to the socket 1 .

[0043] In one possible embodiment of the present invention, interlocking terminals 212 are provided between the two current-carrying sheets 211. These terminals cooperate with interlocking grooves 213 on the socket 1 when the connector is inserted into the socket 1, ensuring a secure and stable connection between the connector and the socket 1. The interlocking grooves 213 are used to receive the interlocking terminals 212. When the interlocking terminals 212 are placed in the interlocking grooves 213, they can form a fixed connection with the socket 1.

[0044] The design of the interlock terminal 212 and interlock slot 213 prevents the connector from accidentally falling off during operation, ensuring a secure electrical connection. The interlock mechanism prevents unauthorized or incorrect disconnection and connection operations because the connector can only be fully inserted or removed when the interlock terminal 212 and interlock slot 213 are properly aligned. This reduces wear on the connector caused by vibration or impact, extending the connector's service life.

[0045] Furthermore, the lead end 22 is arranged perpendicular to the socket 1 and is used to introduce an external wire.

[0046] Lead terminals 22 are positioned perpendicular to the socket 1. This arrangement makes it easier to connect external wires to the connector. This vertical arrangement helps reduce wire bending and stress, thereby extending the life of the wires. Lead terminals 22 are designed to easily insert and secure external wires, such as power or signal cables, connected from outside the high-voltage box.

[0047] Furthermore, a locking assembly 214 is provided at one end of the plug body 21 , and guide shafts 215 are provided on both sides of the socket 1 body respectively, and the locking assembly 214 is connected to the plug body 21 via the guide shafts 215 .

[0048] Specifically, a locking assembly 214 is provided at one end of the plug body 21. The function of this assembly is to fix the plug 2 after the plug body 21 is inserted into the socket 1 to prevent it from accidentally falling off. The locking assembly 214 can firmly lock the plug 2 body on the socket 1 by cooperating with the guide shaft 215, and maintain the stability of the connection even in the case of vibration or impact. The design of the guide shaft 215 makes the operation of the locking assembly 214 easier. Only a simple push-pull action is required to complete the locking and unlocking, without the need for complicated operating steps. When the plug 2 needs to be replaced or maintained, the plug 2 can be easily pulled out by unlocking the locking assembly 214, which simplifies the maintenance process.

[0049] Furthermore, a guide rail 2141 is provided on the locking assembly 214 , and the guide rail 2141 is movably connected to the guide shaft 215 , so that the locking assembly 214 moves along the guide rail 2141 on the socket.

[0050] A guide rail 2141 is provided on the locking assembly 214. The guide rail 2141 is designed to cooperate with the guide shaft 215 on the socket 1 to guide the movement of the locking assembly 2141 on the socket 1. Through the cooperation between the guide rail 2141 and the guide shaft 215, the locking assembly 2141 can move smoothly along the guide rail, making the locking and unlocking operations easier.

[0051] Furthermore, an electrical connector 12 is provided on the surface of the socket 1 at one end away from the plug 2 . The electrical connector 12 is fixedly connected to the surface of the socket 1 and is used to connect the plug 2 with an external device to form a complete circuit.

[0052] The presence of electrical connector 12 enables a complete electrical circuit between plug 2 and external devices, enabling power or signal transmission. Through this connector, the connector not only reliably connects plug 2 to receptacle 1 internally via current-carrying sheet 211 and current-carrying sheet slot 111, but also forms a stable electrical connection with external devices externally via electrical connector 12, ensuring the proper operation of the entire electrical system. This enhances the functionality and applicability of the connector, making it more suitable for complex electrical environments and diverse application requirements.

[0053] In the second aspect, the present invention also provides a high voltage box 3, such as Figure 7 and Figure 8 As shown, a connector with an isolating switch as described above is used, and the high-voltage box 3 is provided with a connection port that matches the connector. The connector is provided in multiple forms and plugged into the connection port. In a possible embodiment of the present invention, the connector is provided in two forms and plugged into the connection port and arranged opposite to each other.

[0054] The high voltage box 3 is provided with an internal circuit, which includes a switch control unit, an input terminal and an output terminal. The switch control unit is connected to the input terminal and the output terminal respectively. The electrical connection member of the connector is electrically connected to the switch control unit.

[0055] The high-voltage box is provided with a connection port that matches the connector and is used to insert the connector. Two such connectors are inserted into the connection port of the high-voltage box 3 and are arranged opposite each other. This may be to achieve dual-path input or output, or to provide redundant paths to increase system reliability. The internal circuit is provided with a switch control unit for controlling the switching state of the circuit. The internal circuit also has an input terminal and an output terminal, each of which is connected to the switch control unit. Specifically, the input terminal includes a BAT negative input terminal and a BAT positive input terminal, and the output terminal includes a PCS negative output terminal and a PCS positive output terminal.

[0056] Preferably, the switch control unit adopts a high-voltage relay of model EVT350.

[0057] In this embodiment, the BAT negative input terminal is connected to the electrical connector of the connector socket and communicates with the switch control unit, while the PCS negative output terminal is connected to the switch control unit. The BAT positive input terminal is connected to the electrical connector of the connector socket and communicates with the switch control unit, while the PCS positive output terminal is connected to the switch control unit. The BAT negative and BAT positive input terminals are directly connected to the corresponding output terminals of the high-voltage battery pack, providing high-voltage power to the high-voltage box. The PCS negative and positive output terminals are connected to load devices in the high-voltage system, such as motor controllers and chargers.

[0058] In a possible embodiment of the present invention, the BAT negative input terminal, the BAT positive input terminal, the PCS negative output terminal, and the PCS positive output terminal are respectively provided with MSD fusion connectors, and the MSD fusion connectors are used to manually disconnect the circuit.

[0059] In another possible embodiment of the present invention, a fuse is further provided between the positive input terminal of the BAT and the switch control unit, and the fuse is used to provide protection when an overload or short circuit occurs in the circuit.

[0060] Furthermore, an indicator light 31 is provided between the connectors, and the indicator light 31 is fixed on the outer surface of the high-voltage box 3 .

[0061] The internal circuit further includes a BMS control unit. The indicator light 31 is electrically connected to the BMS control unit. The indicator light 31 is used to display the high voltage power-on status.

[0062] The indicator light 31 is arranged between the two connectors and fixed on the outer surface of the high-voltage box 3. Such a position makes it easy for the operator to directly observe the status of the indicator light. When the high-voltage system is powered on, the indicator light 31 will light up; when the system is powered off, the indicator light 31 will go out. The indicator light 31 is electrically connected to the BMS control unit, which means that the BMS control unit can control the lighting of the indicator light 31 according to the status of the high-voltage system. When the high-voltage system is powered on, the BMS control unit detects the presence of voltage and activates the indicator light 31 to light up, thereby showing the operator that the system is powered on; when the high-voltage system is powered off, the BMS control unit turns off the power supply of the indicator light 31, and the indicator light 31 goes out, indicating that the system is in a safe state.

[0063] Preferably, in this embodiment, the model of the BMS control unit is BCU-B40-206.

[0064] Furthermore, a disconnect device 32 and a COM terminal 33 are provided on the surface of the high voltage box between the connectors.

[0065] The BMS control unit is electrically connected to the switch control unit via the disconnect device, and the COM terminal is electrically connected to an external communication interface on the BMS control unit.

[0066] The BMS control unit is electrically connected to the switch control unit through the disconnect device 32. When the disconnect device 32 is in the closed state, the two chips can exchange signals and control information; when the disconnect device 32 is in the open state, this exchange is interrupted. The COM terminal 33 is electrically connected to the external communication interface on the BMS control unit. The high-voltage box receives instructions from external devices (such as the vehicle's control unit, charging controller, etc.) or sends status information through the COM terminal 33. Through the disconnect device 32, a specific part of the circuit can be safely disconnected without shutting down the entire system, which is convenient for maintenance and repair.

[0067] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A connector with an isolating switch, characterized in that: It includes an isolating switch provided with a socket and a plug inserted into the corresponding socket, wherein the plug includes a positive plug and a negative plug; The plug includes a plug body and a lead end, and the socket is provided with a slot, and the plug body is inserted into the slot; A current-carrying sheet is provided inside the plug body, a current-carrying sheet groove matching the current-carrying sheet is provided in the slot, and the current-carrying sheet is engaged with the current-carrying sheet groove.

2. The connector with an isolating switch according to claim 1, characterized in that: There are two current carrier sheets and two current carrier slots respectively, and the current carrier sheets and the current carrier slots are arranged parallel to each other.

3. The connector with an isolating switch according to claim 2, characterized in that: Interlocking terminals are provided between the carrier sheets, and interlocking grooves are provided between the carrier sheet slots. The interlocking terminals are placed in the interlocking grooves and are fixedly connected to the sockets.

4. The connector with an isolating switch according to claim 1, wherein: The lead end is arranged perpendicular to the socket and is used for introducing an external wire.

5. The connector with an isolating switch according to claim 1, wherein: A locking assembly is further provided at one end of the plug body, and guide shafts are respectively provided on both sides of the socket body, and the locking assembly is connected to the plug body through the guide shafts.

6. The connector with an isolating switch according to claim 5, characterized in that: The locking assembly is provided with a guide rail, which is movably connected to the guide shaft, so that the locking assembly moves along the guide rail on the socket.

7. The connector with an isolating switch according to claim 1, wherein: An electrical connector is further provided on the surface of the socket at one end away from the plug. The electrical connector is fixedly connected to the surface of the socket and is used to connect the plug to an external device.

8. A high voltage box, using the connector with an isolating switch according to any one of claims 1 to 7, characterized in that: The high-voltage box is provided with a connection port that matches the connector, and the connector is provided in plurality and plugged into the connection port; An internal circuit is provided inside the high-voltage box, and the internal circuit includes a switch control unit, an input end, and an output end. The switch control unit is connected to the input end and the output end respectively; the electrical connection piece of the connector is electrically connected to the switch control unit.

9. The high voltage box according to claim 8, characterized in that An indicator light is provided between the connectors and is fixed on the outer surface of the high-voltage box; The internal circuit further includes a BMS control unit, the indicator light is electrically connected to the BMS control unit, and the indicator light is used to display a high voltage power-on status.

10. The high voltage box according to claim 9, characterized in that The surface of the high voltage box between the connectors is also provided with a disconnect device and a COM terminal. The BMS control unit is electrically connected to the switch control unit via the disconnect device, and the COM terminal is electrically connected to an external communication interface on the BMS control unit.

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