A charging component and a charging socket

Abstract

This invention proposes a charging assembly, including a corresponding PCB board and a fixing board; it also includes charging terminal adapter slots formed on both sides of the PCB board and the fixing board, and charging terminals corresponding to the charging terminal adapter slots. Through a dual heat conduction design of an extended support structure and thermally conductive silicon, high efficiency and reliability of charging terminal temperature monitoring are achieved. The temperature sensor is directly integrated onto the extended support of the PCB board, and the surface contact between the thermally conductive silicon and the charging terminal effectively reduces contact thermal resistance, improving the temperature sensing response speed by more than 40%. While ensuring the synchronous temperature measurement accuracy of the two charging terminals, this structure forms an independent heat dissipation channel through the cantilever support design of the extended support, avoiding heat accumulation under high current conditions and keeping the temperature monitoring error within ±1.5℃.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle charging technology, specifically to a charging component and a charging socket. Background Technology

[0002] CN116782491A discloses a PCB board assembly and a charging socket. The PCB board assembly includes a PCB board, a signal connector socket, and a temperature sensor socket. The PCB board has a first surface and a second surface facing each other. The PCB board is provided with signal terminal connection points. The signal connector socket and the temperature sensor socket are located on the first surface, and the signal terminal connection points are located on the second surface. The integrated structure of the PCB board assembly makes the structural layout of the charging socket more rational and improves the assembly efficiency of the charging socket.

[0003] However, the layout design of the temperature sensor in the existing charging dock technology has significant defects: the traditional solution usually integrates the temperature sensor on the same surface of the PCB board, resulting in insufficient thermal contact between it and the power terminal, making it difficult to accurately monitor the real-time temperature of the DC positive and negative terminals; at the same time, the configuration of a single temperature sensor cannot achieve independent temperature tracking of the positive and negative terminals, resulting in an over-temperature protection blind spot. Summary of the Invention

[0004] This invention proposes a charging component and a charging socket, which solves the problem that the distributed sensor layout in the prior art not only increases the complexity of the assembly process, but also restricts the overall compactness of the charging socket and the accuracy of monitoring performance.

[0005] The technical solution of this invention is implemented as follows:

[0006] A charging component includes a PCB board and a fixing board that correspond to each other; it also includes charging terminal adapter slots formed on both sides of the PCB board and the fixing board, and charging terminals corresponding to the charging terminal adapter slots.

[0007] The PCB board has outwardly protruding extensions at the charging terminal adapter slots on both sides. Temperature sensors are installed on the extensions, and thermally conductive silicon is installed above the temperature sensors. The two ends of the thermally conductive silicon abut against the opposite side of the two charging terminals and conduct heat to the temperature sensors.

[0008] Furthermore, a positioning groove is provided above the thermally conductive silicon, and an upwardly arched positioning bridge is provided on the fixing plate corresponding to the positioning groove.

[0009] Furthermore, the top of the PCB board is provided with multiple signal connectors, and the fixing plate is provided with protective cylinders corresponding to the outside of the signal connectors, with signal terminals inserted into the protective cylinders to abut against the signal connectors.

[0010] Furthermore, the signal connector is a tower spring, and the protective cylinder has a multi-stage conical design to surround the tower spring.

[0011] Furthermore, a row of signal pins is provided on one side of the bottom of the PCB board, which is electrically connected to the signal connector via the PCB board.

[0012] Furthermore, it also includes grounding terminal holes opened in the PCB board and the mounting plate, as well as grounding terminals inserted through the grounding terminal holes; wherein an elastic ring is provided at the grounding terminal hole of the PCB board.

[0013] The charging socket includes the charging component and a tailstock. The bottom of the tailstock is provided with a terminal tube with multiple corresponding grounding terminals and charging terminals. The PCB board and fixing plate are installed on the top surface of the tailstock and the grounding terminals and charging terminals are inserted into the terminal tube.

[0014] Furthermore, it also includes a housing and multiple protrusions disposed around it. The edge of the tailstock protrudes upward and surrounds the PCB board and the fixing plate to form multiple buckles, which engage with the protrusions.

[0015] Furthermore, the housing is provided with a partition above the adapter fixing plate. The partition is provided with a terminal fixing cylinder that extends upward and is adapted to the grounding terminal, signal terminal and charging terminal respectively. The terminal fixing cylinder is vertically continuous and has an anti-detachment protrusion on the upper inner side to abut against the upper part of the terminal.

[0016] Furthermore, the outer shell is provided with a support frame, and the upper and lower sides of the support frame are fixed with a cover frame and a positioning frame by screws, and a cover plate is hinged to one side of the cover frame.

[0017] The beneficial effects of the technical solution provided in this application are as follows:

[0018] This invention achieves high efficiency and reliability in charging terminal temperature monitoring through a dual heat conduction design of an extended support structure and thermally conductive silicon. The temperature sensor is directly integrated onto the extended support on the PCB board, and the surface contact between the thermally conductive silicon and the charging terminal effectively reduces contact thermal resistance, improving the temperature sensing response speed by more than 40%. While ensuring the accuracy of simultaneous temperature measurement of both charging terminals, this structure forms an independent heat dissipation channel through the cantilever support design of the extended support, avoiding heat accumulation under high current conditions and keeping the temperature monitoring error within ±1.5℃. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the charging component of the present invention;

[0021] Figure 2 This is a schematic diagram of the explosion of the charging component of the present invention;

[0022] Figure 3 This is a top view of the charging component of the present invention;

[0023] Figure 4 This is a schematic diagram of the charging socket of the present invention;

[0024] Figure 5 This is a schematic diagram of the explosion of the charging socket of the present invention;

[0025] Figure 6 This is a half-sectional schematic diagram of the charging socket of the present invention.

[0026] In the diagram: 10 PCB board, 11 extension cable, 12 temperature sensor, 13 thermal conductive silicon, 14 positioning slot, 16 signal pin header, 17 elastic ring, 20 fixing plate, 21 positioning bridge, 22 protective cylinder, 30 charging terminal adapter slot, 40 charging terminal, 50 signal connector, 51 signal terminal, 60 grounding terminal hole, 70 grounding terminal.

[0027] 80 Tailstock, 81 Terminal junction box, 90 Housing, 91 Protrusion, 82 Buckle, 92 Partition, 93 Terminal fixing box, 94 Anti-detachment protrusion, 95 Support frame, 96 Cover frame, 97 Positioning frame, 98 Cover plate. Detailed Implementation

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] Reference Figure 1-3A charging assembly includes a PCB board 10 and a fixing plate 20 corresponding to each other; it also includes charging terminal adapter slots 30 formed on both sides of the PCB board 10 and the fixing plate 20, and charging terminals 40 corresponding to the charging terminal adapter slots 30; the PCB board 10 has outwardly protruding extensions 11 at the charging terminal adapter slots 30 on both sides, and a temperature sensor 12 is provided on the extensions 11. A thermally conductive silicon 13 is provided above the temperature sensor 12, and the two ends of the thermally conductive silicon 13 abut against the opposite side of the two charging terminals 40 and conduct heat to the temperature sensor 12.

[0030] The synergistic design of the extension tray 11 and the thermally conductive silicon 13 forms a directional heat conduction path. The cantilevered protruding structure of the extension tray 11 allows the mounting point of the temperature sensor 12 to break through the boundary of the PCB board 10 body and extend directly to the lateral heat radiation area of ​​the charging terminal 40. The thermally conductive silicon 13, with its wedge-shaped structure, simultaneously abuts against the symmetrical sidewalls of the two charging terminals 40. Through the design of doubling the contact area, the Joule heat of the two terminals is concentrated to a single temperature sensor 12, enabling the thermal state of both terminals to be acquired simultaneously with single-point temperature measurement, improving the monitoring efficiency by more than 120%. This structure breaks through the limitations of traditional axial heat transfer paths and forms a vertical heat dissipation channel in the Z-axis direction. The board edge extension section of the extension tray 11 and the charging terminal adapter slot 30 form a staggered layout, and its suspended part and the positioning bridge 21 of the fixing plate 20 constitute a mechanical stress relief zone. When the charging terminal 40 is subjected to insertion and extraction forces, the elastic deformation of the extension pulley 11 can absorb more than 60% of the lateral shear force. The arched engagement structure between the positioning bridge 21 and the positioning groove 14 of the PCB board 10 forms anti-torsional stiffness through three-point support, controlling the contact pressure fluctuation between the temperature sensor 12 and the thermally conductive silicon 13 within ±5N, ensuring thermal resistance stability. The heat generated by the charging terminal 40 during operation is conducted to the thermally conductive silicon 13 through the sidewall of the metal body. This wedge-shaped thermally conductive medium utilizes its high thermal conductivity to quickly guide the heat along the copper-based circuit of the extension pulley 11 to the temperature sensor 12. The cantilever structure of the extension pulley 11 forms a thermal expansion compensation space in the X-axis direction. Its gradually varying copper layer thickness design allows the heat flow to diffuse in a gradient. Combined with the rigid constraint of the positioning bridge 21, this maintains the long-term adhesion of the heat transfer interface, achieving a linear correspondence between the temperature sensing signal and the actual temperature rise of the terminal, with a correlation coefficient R2 > 0.998.

[0031] In some embodiments, a positioning groove 14 is provided above the thermally conductive silicon 13, and a positioning bridge 21 with an upward arching shape is provided on the fixing plate 20 corresponding to the positioning groove 14. The mating design of the positioning groove 14 and the positioning bridge 21 achieves precise positioning and pressure equalization of the thermally conductive silicon 13 through geometric constraints. The positioning groove 14 is formed on the upper surface of the thermally conductive silicon 13, and its groove structure and the arched protrusion of the positioning bridge 21 form a three-point contact engagement, providing a positioning accuracy of ±0.1mm in the Z-axis direction. This structure forces the thermally conductive silicon 13 to sink along a predetermined path during assembly, ensuring that the contact area between its two ends and the sidewall of the charging terminal 40 reaches more than 95%. Figure 1-2 This allows thermal resistance fluctuations to be controlled within ±5%. After the arched protrusion of the positioning bridge 21 is embedded in the positioning groove 14, its arched top contacts the inclined surface of the groove wall, forming a bidirectional limiting mechanism. This constrains the vertical displacement of the thermally conductive silicon 13 in the Z-axis direction while allowing micron-level deformation caused by thermal expansion in the XY plane. This mechanical fit ensures that the thermally conductive silicon 13 always maintains a constant pressure against the sidewall of the charging terminal 40, ensuring efficient heat conduction to the temperature sensor 12 through a low thermal resistance path.

[0032] In some embodiments, the top of the PCB board 10 is provided with multiple signal connectors 15, and the fixing plate 20 is provided with protective cylinders 22 corresponding to the outside of the signal connectors 15. Signal terminals 50 that abut against the signal connectors 15 are inserted into the protective cylinders 22. The nested design of the protective cylinders 22 and the signal connectors 15 significantly improves the anti-interference capability of signal transmission through the dual effects of physical isolation and electromagnetic shielding. The cylindrical design of the protective cylinders 22 surrounds the signal connectors 15, forming a surrounding shield that isolates the signal terminals 50 from external high-voltage lines such as charging terminals 40 and ambient electromagnetic waves, thereby improving the signal-to-noise ratio of signal transmission by more than 50%.

[0033] In some embodiments, the signal connector 15 is a tower spring, and the protective cylinder 22 has a multi-stage conical design to surround the tower spring. In the prior art, signal connectors with spring-pin structures, due to single-point contact and short elastic stroke (typically <1mm), are prone to plastic deformation or even breakage under frequent insertion / removal or vibration conditions. This technical solution improves the signal connector 15 into a tower spring structure, whose helical shape and multi-turn elastic stroke significantly improve mechanical durability, increasing fatigue life to 10... 7 More than once. The multi-stage conical design of the protective cylinder 22 disperses the insertion and extraction force of the tower spring 15 to different conical surfaces through a graded guiding structure, avoiding the stress concentration and breakage problem caused by the skewed insertion of traditional spring pins. At the same time, it simplifies the maintenance process, eliminating the need to disassemble the PCB board 10 or the fixing plate 20.

[0034] In some embodiments, a row of signal pins 16, electrically connected to the signal connector 15 via the PCB board 10, is provided on one side of the bottom, forming a modular signal transmission interface. This design integrates the traditionally dispersed soldered wires into a single row of standardized pins, shortening the signal transmission path by more than 60%. Simultaneously, the equidistant layout of the pins 16 ensures compatibility with mainstream connectors, improving assembly efficiency by 50%. The vertical insertion direction of the signal pins 16 is orthogonal to the horizontal insertion direction of the protective sleeve 22, effectively separating the high and low voltage line insertion areas and avoiding the risk of accidental contact. The signal pins 16 are connected to the spring structure of the signal connector 15 via a 35μm thick copper layer inside the PCB board 10, forming a direct connection path of "signal terminal 50 → spring 15 → PCB board 10 → signal pins 16," bypassing traditional wire harness soldering points and reducing signal transmission delay to below 1ns.

[0035] In some embodiments, the system further includes grounding terminal holes 60 formed in the PCB board 10 and the fixing plate 20, and grounding terminals 70 inserted into the grounding terminal holes 60; wherein an elastic ring 17 is provided at the grounding terminal hole 60 of the PCB board 10. When the grounding terminal 70 is inserted into the elastic ring 17, its outer rod compresses the wavy structure of the elastic ring 17 leaflets, forcing the leaflets to expand elastically outward and tightly adhere to the surface of the grounding terminal 70, forming a multi-point contact conductive path. After the leaflets are fully inserted, they are locked in the grounding terminal hole 60, and axial displacement is prevented by mechanical interlocking.

[0036] Reference Figure 4-6 The charging socket includes the charging component and a tailstock 80. The bottom of the tailstock 80 is provided with a terminal tube 81 with a plurality of corresponding grounding terminals 70 and charging terminals 40. The PCB board 10 and the fixing plate 20 are installed on the top surface of the tailstock 80 and the grounding terminals 70 and charging terminals 40 are inserted into the terminal tube 81.

[0037] The terminal block 81 of the tailstock 80 achieves rapid assembly and electrical isolation between the charging terminal 40 and the grounding terminal 70 through a modular plug-in structure. The cylindrical wall of the terminal block 81 employs a segmented insulation design, extending the creepage distance between adjacent terminals to over 8mm to meet the IEC 62196 standard, while attenuating electromagnetic radiation intensity to below 50dB. The snap-fit ​​installation of the top surface of the tailstock 80 with the PCB board 10 allows for a layered layout of high and low voltage lines. Heat from the charging terminal 40 is directly transferred to the temperature sensor 12 via the extension tube 11, preventing heat conduction to the signal pin header 16 area via the tailstock 80. When the charging terminal 40 is inserted into the terminal block 81, its tapered end fits into the inner part of the block, ensuring that the terminal axis deviation is <0.1mm and the contact resistance is stable below 0.5mΩ. The metal shielding layer of the tailstock 80 forms an equipotential connection with the positioning bridge 21 of the fixing plate 20 through the grounding terminal 70, eliminating eddy current interference generated by the high current of the charging terminal 40.

[0038] In some embodiments, the device also includes a housing 90 and a plurality of protrusions 91 disposed around it. The edge of the tailstock 80 protrudes upwards, surrounding the PCB board 10 and the fixing plate 20 and forming a plurality of snap fasteners 82. The snap fasteners 82 and the protrusions 91 are interlocked. The protrusions 91 of the housing 90 and the snap fasteners 82 of the tailstock 80 achieve tool-free assembly and disassembly and vibration-resistant reinforcement through a geometric interlocking design. The elastic cantilever structure of the snap fastener 82 undergoes elastic deformation due to the pressure of the protrusions 91 during assembly, and then rebounds and snaps into the trapezoidal groove of the protrusions 91, forming a three-point contact mechanical lock. The annular closed structure of the housing 90 and the tailstock 80 completely encloses the PCB board 10 and the fixing plate 20, preventing external dust and liquid from seeping into the charging terminal 40 area along the seam, suppressing the displacement under vibration conditions to within ±0.1mm, and ensuring that there is no misalignment of the thermal conduction interface between the temperature sensor 12 and the charging terminal 40.

[0039] In some embodiments, the housing 90 includes a partition 92 that adapts to the upper part of the fixing plate 20. The partition 92 has upwardly extending terminal fixing cylinders 93 that respectively adapt to the grounding terminal 70, signal terminal 50, and charging terminal 40. The terminal fixing cylinders 93 are vertically continuous and have an anti-detachment protrusion 94 on their upper inner side to abut against the upper part of the terminal. The partition 92 is located inside the housing 90 and above the fixing plate 20. The multiple upwardly extending terminal fixing cylinders 93 achieve independent partitioning of the grounding terminal 70, signal terminal 50, and charging terminal 40 through physical isolation. The vertically continuous design of the terminal fixing cylinders 93 allows the terminal to be vertically inserted from the bottom of the housing 90. The anti-detachment protrusion 94 inside the cylinder forms an axial tensile mechanical lock after the terminal is inserted, preventing the terminal from falling off during vibration or insertion / removal.

[0040] In some embodiments, the outer casing 90 is provided with a support frame 95. A cover frame 96 and a positioning frame 97 are fixed to the upper and lower sides of the support frame 95 by screws. A cover plate 98 is hinged to one side of the cover frame 96. The support frame 95, together with the cover frame 96 and the positioning frame 97, forms a three-dimensional frame structure through four corner bolts, improving the bending strength of the outer casing 90. The hinged design between the cover plate 98 and the cover frame 96 allows for an opening angle greater than 120°. Simultaneously, pressing the release button on the edge of the cover plate 98 with one hand triggers the spring lock to unlock, enabling rapid use within 3 seconds.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A charging component, characterized in that, It includes a PCB board (10) and a fixing plate (20) that correspond to each other; it also includes a charging terminal adapter slot (30) opened on both sides of the PCB board (10) and the fixing plate (20) and a charging terminal (40) corresponding to the charging terminal adapter slot (30). The PCB board (10) has an outwardly protruding extension (11) at the charging terminal adapter slot (30) on both sides. A temperature sensor (12) is provided on the extension (11). A thermally conductive silicon (13) is provided above the temperature sensor (12). The two ends of the thermally conductive silicon (13) abut against the opposite side of the two charging terminals (40) and conduct its heat to the temperature sensor (12). The thermally conductive silicon (13) is provided with a positioning groove (14) above it, and the fixing plate (20) is provided with an upwardly arched positioning bridge (21) corresponding to the positioning groove (14).

2. The charging component as described in claim 1, characterized in that, The top of the PCB board (10) is provided with multiple signal connectors (15), and the fixing plate (20) is provided with a protective cylinder (22) corresponding to the outside of the signal connectors (15). The protective cylinder (22) is filled with a signal terminal (50) that abuts against the signal connectors (15).

3. The charging component as described in claim 2, characterized in that, The signal connector (15) is a tower spring, and the protective cylinder (22) has a multi-stage conical design to surround the tower spring.

4. The charging component as described in claim 2, characterized in that, The bottom side of the PCB board (10) is provided with a row of signal pins (16) that are electrically connected to the signal connector (15) via the PCB board (10).

5. The charging component as described in claim 1, characterized in that, It also includes grounding terminal holes (60) opened in the PCB board (10) and the fixing plate (20) and grounding terminals (70) inserted in the grounding terminal holes (60); wherein an elastic ring (17) is provided at the grounding terminal holes (60) of the PCB board (10).

6. A charging socket, characterized in that, The charging assembly according to any one of claims 1-5 also includes a tailstock (80), the bottom of which is provided with a plurality of terminal tubes (81) corresponding to grounding terminals (70) and charging terminals (40), the PCB board (10) and the fixing plate (20) are mounted on the top surface of the tailstock (80) and the grounding terminals (70) and charging terminals (40) are inserted into the terminal tubes (81).

7. The charging socket as described in claim 6, characterized in that, It also includes a housing (90) and a plurality of protrusions (91) disposed around it. The edge of the tailstock (80) protrudes upward around the outside of the PCB board (10) and the fixing plate (20) and forms a plurality of buckles (82). The buckles (82) and the protrusions (91) engage with each other.

8. The charging socket as described in claim 7, characterized in that, The housing (90) is provided with a partition (92) above the adapter fixing plate (20). The partition (92) is provided with a terminal fixing cylinder (93) extending upward and respectively adapting to the grounding terminal (70), signal terminal (50) and charging terminal (40). The terminal fixing cylinder (93) is vertically connected and has an anti-detachment protrusion (94) on the upper inner side to abut against the upper part of the terminal.

9. The charging socket as described in claim 7, characterized in that, The outer shell (90) is provided with a support frame (95). The upper and lower sides of the support frame (95) are fixed with a cover frame (96) and a positioning frame (97) by screws. A cover plate (98) is hinged to one side of the cover frame (96).

Images