Modularized low-voltage signal integrated control board of direct-current charging socket
By designing a modular low-voltage signal integrated control board for DC charging sockets, using a copper busbar structure and temperature-sensitive resistors, the electromagnetic interference of high-voltage lines to low-voltage signals and the problem of external force detachment are solved, achieving low-cost modular replacement and simplified assembly and disassembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING AUTOMOBILE WORKS CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-08
AI Technical Summary
In existing DC charging sockets, electromagnetic interference from high-voltage lines to low-voltage signals cannot be effectively controlled, and the low-voltage signal connections are easily detached due to external forces, making modular replacement impossible, resulting in a messy layout and difficult maintenance.
Design a modular low-voltage signal integrated control board for DC charging socket. The low-voltage signal is integrated using a copper busbar structure. The copper busbar runs perpendicular to the high-voltage terminal. Temperature sensing resistors and slots are set to reduce electromagnetic interference. The board is injection molded from PA66 material.
It effectively optimizes the electromagnetic interference of high-voltage lines to low-voltage signals, prevents signal connections from falling off due to external forces, reduces manufacturing costs, simplifies the disassembly and assembly process, and enables modular replacement.
Smart Images
Figure CN224218728U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of DC charging for new energy vehicles, and more specifically, it relates to a modular low-voltage signal integrated control board for DC charging sockets. Background Technology
[0002] With the increasing number of new energy vehicles, charging has become an indispensable part of these vehicles. However, existing DC charging sockets often use wires to connect the low-voltage signals to the high-voltage section, and the internal wiring is difficult to control, resulting in a messy layout. The electromagnetic interference of the high-voltage lines to the low-voltage signals cannot be effectively controlled. During vehicle assembly, if the high-voltage wiring harness has a certain degree of twisting or displacement, it may cause the low-voltage signal wires to twist and fall off. In the later maintenance process, the inability to perform modular replacement will create many risks, such as the inability to control the accuracy of secondary crimping. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a modular low-voltage signal integrated control board for DC charging sockets. By setting up the low-voltage signal integrated control board, it effectively optimizes the electromagnetic interference of the high-voltage line of the vehicle DC charging socket to the low-voltage signal and solves the problem of the internal signal crimping joint falling off due to external force.
[0004] The aforementioned modular low-voltage signal integrated control board for a DC charging socket includes a control board. A charging connection confirmation port is fixedly opened in the middle of the upper part of the control board. Charging communication port one and charging communication port two are fixedly opened on both sides of the charging connection confirmation port one, respectively. A charging connection confirmation port two is fixedly opened below the charging connection confirmation port one. A positive DC power socket and a negative DC power socket are fixedly opened on both sides of the middle part of the control board, respectively. A grounding socket is fixedly opened in the middle of the lower part of the control board. Low-voltage auxiliary power port two and low-voltage auxiliary power port one are fixedly opened on both sides of the grounding socket, respectively. A copper busbar is fixedly installed inside the control board. A protruding frame extends rearward from the side wall of the control board, and multiple sets of protruding ribs are fixedly connected to the rear of the control board.
[0005] Preferably, the copper busbar includes a temperature signal copper busbar, a charging communication plug-in board 1 is provided on the right side of the temperature signal copper busbar 1, the charging communication plug-in board 1 is fixedly connected to a charging communication port 1, a low-voltage auxiliary power plug-in board 2 is provided on the right side of the charging communication plug-in board 1, the low-voltage auxiliary power plug-in board 2 is fixedly connected to a low-voltage auxiliary power port 2, a charging connection confirmation plug-in board 2 is provided on the right side of the low-voltage auxiliary power plug-in board 2, the charging connection confirmation plug-in board 2 is fixedly connected to a charging connection confirmation port 2, a charging connection confirmation plug-in board 1 is provided on the right side of the charging connection confirmation plug-in board 2, the low-voltage auxiliary power plug-in board 1 is fixedly connected to a low-voltage auxiliary power port 1, a charging communication plug-in board 2 is provided on the right side of the low-voltage auxiliary power plug-in board 1, the charging communication plug-in board 2 is fixedly connected to a charging communication port 2, and a temperature signal copper busbar 2 is provided on the right side of the charging communication plug-in board 2.
[0006] Preferably, a fixing block is fixedly provided on the top of the control board, and pins are fixedly connected to the top of the temperature signal copper busbar, the charging communication plug board, the low-voltage auxiliary power supply plug board, the charging connection confirmation plug board, the charging connection confirmation plug board, the low-voltage auxiliary power supply plug board, the charging communication plug board, and the temperature signal copper busbar. The pins are fixedly connected to the fixing block.
[0007] Preferably, a slot is fixedly provided between the charging connection confirmation port 2 and the grounding socket, and a resistor is fixedly installed in the slot.
[0008] Preferably, a slot frame is fixedly connected to the top of the DC power negative socket and the DC power positive socket, a temperature sensing resistor is fixedly installed in the slot frame, the slot frame is filled with thermally conductive adhesive, and both the temperature signal busbar one and the temperature signal busbar two are electrically connected to the temperature sensing resistor.
[0009] Preferably, the control panel is injection molded from PA66 material.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] 1. By setting up a low-voltage signal integrated control board, the electromagnetic interference of the high-voltage line of the vehicle DC charging socket to the low-voltage signal is effectively optimized, the problem of the internal signal crimping joint falling off due to external force is solved, the problem of difficult disassembly and assembly and the inability to replace the whole unit is solved, and the cost is reduced compared to the PCB integration form.
[0012] 2. The copper busbars and high-voltage terminals are both vertically aligned, effectively preventing electromagnetic interference between high and low voltage lines. During disassembly or assembly of the control board, it does not interfere with the high-voltage structure. Compared to PCB control board solutions, there is no need to solder all signal terminals and temperature sensing components, resulting in lower manufacturing costs. Attached Figure Description
[0013] Figure 1This is a schematic diagram of the rear structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the copper busbar arrangement.
[0015] Figure 3 This is a front structural diagram of the present invention.
[0016] In the diagram: 1. Control board; 101. Protruding frame; 102. Fixing block; 103. Slot; 104. Protruding rib; 2. Charging communication port one; 3. Charging communication port two; 4. Charging connection confirmation port one; 5. Charging connection confirmation port two; 6. DC power negative socket; 7. DC power positive socket; 8. Grounding socket; 9. Low-voltage auxiliary power port one; 10. Low-voltage auxiliary power port two; 11. Slot frame; 12. Temperature signal copper busbar one; 13. Charging communication plug board one; 14. Low-voltage auxiliary power plug board two; 15. Charging connection confirmation plug board two; 16. Charging connection confirmation plug board one; 17. Low-voltage auxiliary power plug board one; 18. Charging communication plug board two; 19. Temperature signal copper busbar two. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings:
[0018] The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0019] like Figure 1 and Figure 3 As shown, a modular low-voltage signal integrated control board for a DC charging socket is disclosed. The control board 1 is fixedly connected to the charging gun body at the rear. The control board 1 has a charging connection confirmation port 4 fixedly opened in the middle of the upper part. Charging communication port 2 and charging communication port 3 are fixedly opened on both sides of the charging connection confirmation port 4, respectively. Charging connection confirmation port 5 is fixedly opened at the lower part of the charging connection confirmation port 4. DC power positive socket 7 and DC power negative socket 6 are fixedly opened on both sides of the middle part of the control board 1, respectively. The DC power positive terminal (DC+) is connected to the positive terminal of the battery through the DC power positive socket 7, and the DC power negative terminal (DC-) is connected to the negative terminal of the battery through the DC power negative socket 6. A grounding socket 8 is fixedly opened in the middle of the lower part of the control board 1, and the grounding contact of the vehicle electric platform is connected to the ground wire of the power supply equipment through the grounding socket 8.
[0020] Low-voltage auxiliary power port 2 10 and low-voltage auxiliary power port 1 9 are fixedly provided on both sides of the grounding socket 8. A copper busbar is fixedly installed inside the control board 1. By setting up the low-voltage signal integrated control board 1, the electromagnetic interference of the high-voltage line of the vehicle DC charging socket to the low-voltage signal is effectively optimized, and the problem of the internal signal crimping joint falling off due to external force is solved, thus solving the problems of difficult disassembly and assembly and inability to replace the whole board is solved, reducing costs compared to PCB integration. By setting up the copper busbar, various low-voltage signals are connected together, which can better avoid the situation of the signal crimping joint falling off due to external force compared to the traditional use of wire connection. A protruding frame 101 extends rearward from the side wall of the control board 1. By setting up the protruding frame 101, the contact area and connection strength between the control board 1 and the charging gun body are increased. Multiple sets of protruding ribs 104 are fixedly connected to the rear of the control board 1. The setting of the protruding ribs 104 helps to improve the overall strength of the control board 1 and ensure the service life of the control board 1 on the charging gun.
[0021] like Figure 2 As shown, the copper busbar includes a temperature signal copper busbar 12. A charging communication plug 13 is provided on the right side of the temperature signal copper busbar 12. The charging communication plug 13 is fixedly connected to the charging communication port 2. A low-voltage auxiliary power supply plug 2 14 is provided on the right side of the charging communication plug 13. The low-voltage auxiliary power supply plug 2 14 is fixedly connected to the low-voltage auxiliary power supply port 2 10. A charging connection confirmation plug 2 15 is provided on the right side of the low-voltage auxiliary power supply plug 2 14. The charging connection confirmation plug 2 15 is fixedly connected to the charging connection confirmation port 2 5. The charging connection confirmation plug 2 15 is used to connect the off-board charger and the controller of the electric vehicle.
[0022] A charging connection confirmation connector 16 is located on the right side of the charging connection confirmation connector 2 15. The charging connection confirmation connector 16 is fixedly connected to the charging connection confirmation port 4 and electrically connected to the electric vehicle's controller. A low-voltage auxiliary power supply connector 17 is located on the right side of the charging connection confirmation connector 16. The low-voltage auxiliary power supply connector 17 is fixedly connected to the low-voltage auxiliary power supply port 9. The low-voltage auxiliary power supply connector 17 and the low-voltage auxiliary power supply connector 2 14 are used to connect the low-voltage auxiliary power provided by the off-board charger to the electric vehicle. A charging communication connector 2 18 is located on the right side of the low-voltage auxiliary power supply connector 17. The charging communication connector 2 18 is fixedly connected to the charging communication port 3. The communication line between the off-board charger and the electric vehicle is connected through the charging communication connector 2 18 and the charging communication connector 13. A temperature signal busbar 2 19 is located on the right side of the charging communication connector 2 18.
[0023] A fixing block 102 is fixedly mounted on the top of the control board 1. Pins are fixedly connected to the tops of the temperature signal busbar 12, the charging communication connector 13, the low-voltage auxiliary power connector 14, the charging connection confirmation connector 15, the charging connection confirmation connector 16, the low-voltage auxiliary power connector 17, the charging communication connector 18, and the temperature signal busbar 19. These pins are fixedly connected to the fixing block 102. Signals are guided upwards from the busbars through the pins to the low-voltage connector interface. The interior of the busbars and the high-voltage terminals are perpendicular, effectively avoiding electromagnetic interference between the high and low voltage lines. When disassembling or assembling the control board 1, it does not interfere with the high-voltage structure. Compared to a PCB control board solution, it eliminates the need for soldering all signal terminals and temperature sensing components, resulting in lower manufacturing costs.
[0024] A slot 103 is fixedly provided between the charging connection confirmation port 2 5 and the grounding socket 8, and a resistor is fixedly installed in the slot 103. The resistor is located between the grounding contact and the charging connection confirmation socket 2 15.
[0025] A slot frame 11 is fixedly connected to the top of the DC power negative socket 6 and the DC power positive socket 7. A temperature-sensing resistor is fixedly installed inside the slot frame 11, which is filled with thermally conductive adhesive. Temperature signal busbar 12 and temperature signal busbar 19 are both electrically connected to the temperature-sensing resistor. The temperature signal busbar 12 and temperature signal busbar 19 transmit the electrical signal from the temperature-sensing resistor to the vehicle to monitor the temperature of the charging port in real time. When the temperature is too high, the charging speed is reduced to ensure the safety of the vehicle battery.
[0026] Control panel 1 is injection molded from PA66 material.
[0027] This invention effectively optimizes the electromagnetic interference of the high-voltage line to the low-voltage signal in the vehicle's DC charging socket by setting up a low-voltage signal integrated control board. It solves the problems of internal signal voltage accepting external force and detachment, making disassembly and assembly difficult and preventing complete replacement. Compared to PCB integration, this reduces costs. Furthermore, by ensuring that the copper busbars and high-voltage terminals are vertically aligned, electromagnetic interference between high and low voltage lines is effectively avoided. During disassembly or assembly of the control board 1, it does not interfere with the high-voltage structure. Compared to the PCB control board 1 solution, there is no need to solder all signal terminals and temperature sensing components, resulting in lower manufacturing costs.
Claims
1. A modular low-voltage signal integrated control board for a DC charging socket, characterized in that: The control board includes a charging connection confirmation port 1 fixedly located in the middle of its upper part. Charging communication port 1 and charging communication port 2 are fixedly located on both sides of charging connection confirmation port 1. Charging connection confirmation port 2 is fixedly located below charging connection confirmation port 1. DC power positive socket and DC power negative socket are fixedly located on both sides of the middle part of the control board. Grounding socket is fixedly located in the middle of the lower part of the control board. Low voltage auxiliary power port 2 and low voltage auxiliary power port 1 are fixedly located on both sides of grounding socket. Copper busbar is fixedly located inside the control board. A protruding frame extends rearward from the side wall of the control board. Multiple sets of protruding ribs are fixedly connected to the rear of the control board.
2. The modular low-voltage signal integrated control board for a DC charging socket according to claim 1, characterized in that: The copper busbar includes a temperature signal copper busbar. A charging communication plug-in board is located on the right side of the temperature signal copper busbar, and is fixedly connected to a charging communication port. A low-voltage auxiliary power plug-in board is located on the right side of the charging communication plug-in board, and is fixedly connected to a low-voltage auxiliary power port. A charging connection confirmation plug-in board is located on the right side of the low-voltage auxiliary power plug-in board, and is fixedly connected to a charging connection confirmation port. A charging connection confirmation plug-in board is located on the right side of the charging connection confirmation plug-in board, and is fixedly connected to a charging connection confirmation port. A low-voltage auxiliary power plug-in board is located on the right side of the charging connection confirmation plug-in board, and is fixedly connected to a low-voltage auxiliary power port. A charging communication plug-in board is located on the right side of the low-voltage auxiliary power plug-in board, and is fixedly connected to a charging communication port. A temperature signal copper busbar is located on the right side of the charging communication plug-in board.
3. The modular low-voltage signal integrated control board for a DC charging socket according to claim 1, characterized in that: A fixing block is fixedly provided on the top of the control board. Pins are fixedly connected to the top of the temperature signal copper busbar, the charging communication plug board, the low-voltage auxiliary power supply plug board, the charging connection confirmation plug board, the charging connection confirmation plug board, the low-voltage auxiliary power supply plug board, the charging communication plug board, and the temperature signal copper busbar. The pins are fixedly connected to the fixing block.
4. The modular low-voltage signal integrated control board for a DC charging socket according to claim 1, characterized in that: A slot is fixedly provided between the charging connection confirmation port 2 and the grounding socket, and a resistor is fixedly installed in the slot.
5. The modular low-voltage signal integrated control board for a DC charging socket according to claim 1, characterized in that: The top of the DC power negative socket and the DC power positive socket are fixedly connected to a slot frame, and a temperature sensing resistor is fixedly installed in the slot frame. The slot frame is filled with thermally conductive adhesive. Temperature signal busbar one and temperature signal busbar two are both electrically connected to the temperature sensing resistor.
6. The modular low-voltage signal integrated control board for a DC charging socket according to claim 1, characterized in that: The control panel is injection molded from PA66 material.