Signal connector of new energy automobile charger

Abstract

The utility model relates to the technical field of signal connection of new energy automobile chargers, in particular to a signal connector of a new energy automobile charger. The direct connector comprises a direct connector assembly, the direct connector assembly is electrically connected with a signal plate assembly and is provided with a shielding case assembly, and the shielding case assembly is provided with an elastic metal reed which is conducted with a charger metal shell and grounded. The direct connector assembly is formed by injection molding of a signal terminal, a power terminal and a rubber shell, a sealing structure is arranged on the rubber shell, and the signal board assembly comprises a PCB with a filter device and an adapter connector, and a grounding stud. The shielding case assembly is fixed on the signal board assembly through a fastener, and the open slot on the shielding case body can be used for avoiding or embedding the signal board assembly to connect and extend out of the cable. According to the invention, the stability and reliability of signal connection are improved, the electromagnetic shielding effect is enhanced, and the safety and anti-interference capability of signal transmission in the charging process are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of signal connection of new energy vehicle chargers, in particular to a signal connector of a new energy vehicle charger. BACKGROUND

[0002] With the rapid development of the new energy electric vehicle market, the performance stability of vehicles has become a focus of users. As an important part of new energy vehicles, the function and performance of chargers directly affect the running efficiency and safety of the whole vehicle. The charger not only needs to efficiently complete the conversion and management of electric energy, but also needs to ensure stable and reliable work in a complex electromagnetic environment. In order to improve the electromagnetic compatibility and reliability of the charger, the industry is constantly exploring new technologies and design schemes.

[0003] In the prior art, the connection between the internal signal board and the external cable of the charger usually adopts a curved signal connector welded to the PCB board, and the connection with the external cable is realized through the through hole on the metal shell of the charger. In addition, common solutions also include using sealing rings and glue to enhance the sealing of the connection part, and adding a shielding cover to reduce electromagnetic interference. However, these methods have some limitations in actual application.

[0004] Although the above methods can improve the sealing and electromagnetic compatibility of the charger to some extent, there are still obvious deficiencies. Due to the unstable contact between the shielding cover and the charger shell, the electromagnetic shielding effect is not good, and it cannot fully meet the EMC standard.

[0005] Therefore, based on the above problems, the prior art needs to be improved. CONTENT OF THE INVENTION

[0006] The purpose of the present application is to provide a signal connector of a new energy vehicle charger.

[0007] The above technical purpose of the present application is realized by the following technical scheme: a signal connector of a new energy vehicle charger, comprising a straight connector assembly, the straight connector assembly is electrically connected with a signal board assembly, a shielding cover assembly is arranged on the straight connector assembly, the straight connector assembly and the shielding cover assembly cooperate to wrap the signal board assembly, a reed is arranged on the shielding cover assembly for grounding with the metal shell of the charger.

[0008] By adopting the above technical scheme, the electromagnetic signal interference signal plate of the boost inductor and the power conversion unit can be effectively prevented, signal mutual crosstalk between multi-channel circuits is avoided, and the EMC problem of the module circuit is solved. At the same time, the shielding cover structure with the spring sheet ensures good contact between the shielding cover and the charger metal shell, and even in the case of machining error or insufficient screw locking force, stable electromagnetic shielding effect can be maintained. It also has the characteristics of convenient installation and excellent sealing performance, and is suitable for various environments.

[0009] Optionally, the straight connector assembly comprises a signal terminal, a power terminal and a glue shell, and the signal terminal and the power terminal are integrally injection molded with the glue shell.

[0010] By adopting the above technical scheme, the entire connector structure is more compact, the welding reliability and mechanical strength of the terminal are improved. At the same time, the integrated design simplifies the assembly process, reduces the assembly process, and reduces the production cost. In addition, the injection-molded structure also enhances the overall sealing performance of the connector, prevents moisture and other impurities from entering the inside of the connector, and ensures the stability and reliability of the connector in harsh environments.

[0011] Optionally, a sealing structure is arranged on the glue shell.

[0012] By adopting the above technical scheme, the moisture from the outside can be effectively prevented from entering the charger, the sealing requirements of the connector and the charger are met, the charger can still operate normally in a humid environment, and the reliability and service life of the charger are improved.

[0013] Optionally, the signal plate assembly comprises a PCB board, the PCB board is provided with a filter device and an adapter connector, and a grounding stud is arranged on the side of the PCB board close to the shielding cover assembly.

[0014] By adopting the above technical scheme, the filter device can effectively filter the noise brought by the signal adapter cable, improve the purity and stability of signal transmission, and the grounding stud ensures good electrical connection between the signal plate assembly and the shielding cover assembly, further enhances the electromagnetic shielding effect, reduces the influence of electromagnetic interference, and improves the EMC performance of the entire system.

[0015] Optionally, the shielding cover assembly comprises a shielding cover body and a fastener, and the shielding cover body is fixed on the signal plate assembly by the fastener.

[0016] By adopting the above technical scheme, the stable connection between the shielding cover and the signal plate can be ensured, and the assembly efficiency and reliability are improved. At the same time, the shielding cover body can effectively wrap the signal plate assembly, reduce the interference of external electromagnetic signals, and improve the electromagnetic compatibility of the entire signal connector. The design of the fastener also simplifies the installation process and improves the production efficiency.

[0017] Optionally, the shielding cover body is provided with an open slot for avoiding or fittingly installing the cable extended from the signal plate assembly.

[0018] By adopting the above technical scheme, the cable can smoothly enter and exit, and the friction between the cable and the shielding cover is reduced, the cable is prevented from loosening or poor contact due to vibration, and the stability and reliability of signal transmission of the charger are improved. The design of the open slot can also effectively control the position of the cable entering and exiting, avoid a large amount of electromagnetic signal leakage from the gap between the shielding cover and the cable, and maintain good electromagnetic shielding effect.

[0019] Optionally, the reed is made of elastic metal material and can elastically deform under stress, so that the shielding cover assembly and the charger metal shell always maintain contact, ensuring the electromagnetic shielding effect.

[0020] By adopting the above technical scheme, the reed is made of elastic metal material and can elastically deform under stress, so that the shielding cover assembly and the charger metal shell always maintain close contact, thereby effectively preventing electromagnetic signal leakage, improving the electromagnetic compatibility of the charger, and ensuring that the electromagnetic performance meets the EMC requirements.

[0021] Optionally, the reed is provided with a plurality of.

[0022] By adopting the above technical scheme, the design of multiple reeds ensures multiple-point contact between the shielding cover assembly and the charger metal shell, improves the reliability and uniformity of the electromagnetic shielding effect, and ensures that even if some reeds are poorly contacted due to vibration during the operation of the charger, other reeds can still maintain good grounding effect, ensuring the electromagnetic compatibility (EMC) requirements. In addition, multiple-point contact also reduces the pressure concentration problem of a single reed, prolongs the service life of the reed, and reduces the maintenance cost.

[0023] In summary, the present application at least has the following beneficial effects:

[0024] 1. By designing a shielding cover structure with a reed and a signal plate assembly wrapped therein cooperated with a connector, electromagnetic signal interference of the signal plate by the boost inductor and the power conversion unit can be effectively prevented, signal mutual crosstalk between multiple channels can be avoided, and the EMC performance of the module circuit is significantly improved.

[0025] 2. The reed of the shielding cover structure is made of elastic metal material, so that the reed can elastically deform under stress. When the connector and the shielding reed combined structure are locked on the metal shell with a screw, the gap caused by machining error or insufficient locking force of the screw is avoided, the shielding cover always maintains good contact with the shell, and the electromagnetic shielding effect is ensured.

[0026] 3. The straight connector assembly is integrated with the glue shell by injection molding, and is provided with a sealing mechanism. The connector is locked on the through hole of the charger shell through the sealing mechanism, which can effectively prevent external moisture from entering the charger, improve the overall sealing performance of the connector and the charger, and meet the stringent environmental requirements. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is an assembly diagram of a signal connector of a new energy automobile charger;

[0028] Figure 2 is an exploded view of a signal connector of a new energy automobile charger;

[0029] Figure 3 is a structural diagram of a shielding cover assembly;

[0030] Figure 4 is a structural diagram of a straight connector assembly;

[0031] Figure 5 is a structural diagram of a signal board assembly.

[0032] REFERENCE NUMERALS

[0033] 1. Straight connector assembly; 11. Signal terminal; 12. Glue shell; 13. Sealing structure; 2. Signal board assembly; 21. PCB board; 22. Filter device; 23. Adapter connector; 24. Ground stud; 3. Shielding cover assembly; 31. Shielding cover body; 32. Fastener; 4. Spring leaf; 5. Open slot. DETAILED DESCRIPTION

[0034] The application will be further described in detail below with reference to the accompanying drawings.

[0035] Example 1

[0036] In this embodiment, referring to Figures 1-5 A signal connector of a new energy automobile charger, comprising a straight connector assembly 1, the straight connector assembly 1 is electrically connected with a signal board assembly 2, the straight connector assembly 1 is provided with a shielding cover assembly 3, the straight connector assembly 1 and the shielding cover assembly 3 cooperate to wrap the signal board assembly 2, the shielding cover assembly 3 is provided with a spring leaf 4 for grounding with the metal shell of the charger, which effectively prevents electromagnetic interference and improves the sealing performance.

[0037] Specifically, referring to Figure 4The straight connector assembly 1 comprises a signal terminal 11, a power terminal and a glue shell 12, and the signal terminal 11 and the power terminal are integrally injection molded with the glue shell 12. The signal terminal 11 and the power terminal can be made of copper alloy or tin-phosphor bronze and other materials with good electrical conductivity, and the glue shell 12 is made of polycarbonate material with high temperature resistance and corrosion resistance. The signal terminal 11 and the power terminal are tightly combined with the glue shell 12 through the injection molding process, which not only improves the connection strength, but also facilitates subsequent welding operation. The glue shell 12 is provided with a sealing structure 13, such as a rubber sealing ring or a silica gel sealing pad, to ensure the sealing performance of the connector and the through hole of the charger shell, thereby realizing the sealing function.

[0038] Specifically, referring to Figure 5 The signal plate assembly 2 comprises a PCB board 21, the PCB board 21 is provided with a filter device 22 and an adapter connector 23, and the PCB board 21 is provided with a grounding stud 24 on the side close to the shielding cover assembly 3. The PCB board 21 is made of high-density interconnection technology, which has high wiring density and signal integrity. The filter device 22 can be selected from ceramic capacitors, electrolytic capacitors or ferrite beads, etc. to filter high-frequency noise. The adapter connector 23 adopts a high-reliability connector, such as a Fakra connector or a Micro-Fit connector, to ensure the stability and reliability of signal transmission. The grounding stud 24 is made of silver-plated or nickel-plated stainless steel material, which has good electrical conductivity and corrosion resistance, and is fixed on the PCB board 21 through threaded connection, and forms a reliable electrical connection with the shielding cover assembly 3.

[0039] Specifically, referring to Figures 2-3 The shielding cover assembly 3 comprises a shielding cover body 31 and a fastener 32, and the shielding cover body 31 is fixed on the signal plate assembly 2 through the fastener 32. The shielding cover body 31 is made of cold-rolled steel plate or aluminum alloy material, which is made by stamping forming process and the surface is treated by anti-oxidation to ensure that it will not rust or corrode during long-term use. The fastener 32 can be a self-tapping screw or a spring buckle, which firmly fixes the shielding cover body 31 on the PCB board 21 through the fastener 32, ensures that the shielding cover closely fits the signal plate assembly 2, and reduces electromagnetic interference.

[0040] Specifically, referring to Figure 3 The shielding cover body 31 is provided with an open slot 5 for avoiding or fittingly installing the cable extended from the signal plate assembly 2. The width and height of the open slot 5 can be accurately designed according to the diameter of the cable to ensure that the cable can smoothly pass through the open slot 5 while maintaining good clamping effect to prevent the cable from loosening or falling off during vibration. The edge of the open slot 5 can be designed as a round corner to reduce the wear on the cable.

[0041] Specifically, referring to Figure 1The spring sheet 4 is made of elastic metal material and can deform elastically under stress, ensuring that the shield assembly 3 always contacts the charger metal shell and guarantees the electromagnetic shielding effect. The spring sheet 4 can be made of beryllium bronze or stainless steel, which has good elasticity and fatigue resistance. The number of spring sheets 4 can be adjusted according to actual needs, for example, multiple spring sheets 4 can be provided to increase the contact area and contact pressure and improve the electromagnetic shielding effect. The spring sheet 4 can be made by stamping forming process and the surface is treated to prevent oxidation, ensuring that it does not lose elasticity during long-term use.

[0042] The implementation principle of the embodiment is:

[0043] The combination structure of the straight connector assembly 1, the signal board assembly 2, and the shield assembly 3 is designed to achieve effective sealing and electromagnetic shielding of the signal connector. The signal terminal 11 and the power terminal are tightly combined with the gel shell 12 through the injection molding process to ensure the connection strength and sealing performance. The signal board assembly 2 ensures the stability and reliability of signal transmission through the filter device 22 and the adapter connector 23. The shield assembly 3 always contacts the charger metal shell through the spring sheet 4, effectively reducing electromagnetic interference. The entire structure is compact, easy to install, suitable for various environments, and has high practical value.

[0044] Embodiment 2

[0045] The difference between the embodiment and the above-mentioned embodiments is:

[0046] A waterproof and breathable film is added to the gel shell 12 of the straight connector assembly 1 to balance the internal and external air pressure and prevent water from entering the connector interior. The waterproof and breathable film is made of PTFE material and has good air permeability and waterproofness, which can effectively prevent water from entering the connector interior while allowing internal and external gas exchange to keep the connector interior dry. The waterproof and breathable film is installed on the sealing structure 13 of the gel shell 12 and is fixed by ultrasonic welding or adhesive to ensure its firmness and reliability.

[0047] The implementation principle of the embodiment is:

[0048] The embodiment further improves the sealing performance and waterproof performance of the connector by adding a waterproof and breathable film to the gel shell 12 of the straight connector assembly 1. The waterproof and breathable film can effectively prevent water from entering the connector interior while allowing internal and external gas exchange to keep the connector interior dry. This not only prolongs the service life of the connector but also improves the reliability and stability of the charger in harsh environments.

[0049] Embodiment 3

[0050] The difference between the embodiment and the above-mentioned embodiments is:

[0051] The shielding cover body 31 of the shielding cover assembly 3 is added with heat dissipation fins to improve the heat dissipation effect and prevent the signal board assembly 2 from overheating. The heat dissipation fins are made of aluminum alloy material, which has good heat conductivity and lightweight characteristics. The heat dissipation fins are made by stamping forming process, and the surface is treated by anodic oxidation to enhance its corrosion resistance and aesthetics. The number and distribution of the heat dissipation fins can be adjusted according to actual needs to ensure the best heat dissipation effect. The heat dissipation fins are fixed to the shielding cover body 31 by welding or riveting to ensure their firmness and reliability.

[0052] The implementation principle of the embodiment is:

[0053] The embodiment effectively improves the heat dissipation effect of the signal board assembly 2 by adding heat dissipation fins to the shielding cover body 31 of the shielding cover assembly 3, preventing overheating from causing performance degradation or damage. The design of the heat dissipation fins not only enhances the heat dissipation performance, but also improves the structural strength of the shielding cover, making it more durable. This improvement is particularly suitable for chargers used in high-temperature environments, ensuring their stability and reliability under extreme conditions.

[0054] Embodiment 4

[0055] The difference between the embodiment and the above-mentioned embodiments is:

[0056] The PCB board 21 of the signal board assembly 2 is added with a temperature sensor and a fault detection circuit to monitor the working state of the signal board in real time. The temperature sensor uses NTC thermistor, which has the characteristics of fast response speed and high precision. The fault detection circuit includes a voltage detection circuit and a current detection circuit to monitor the power voltage and working current of the signal board, and immediately sends an alarm once an abnormality is found. The temperature sensor and the fault detection circuit are soldered on the PCB board 21 by SMT process, occupying a small space and having high integration. The data of the temperature sensor is transmitted to the main control unit through the I2C interface, and the alarm signal of the fault detection circuit is transmitted to the main control unit through the GPIO interface, ensuring the timeliness and accuracy of data transmission.

[0057] The implementation principle of the embodiment is:

[0058] The embodiment realizes real-time monitoring and fault warning of the working state of the signal board by adding a temperature sensor and a fault detection circuit to the PCB board 21 of the signal board assembly 2. This improvement can detect potential faults in advance and take timely measures to avoid the charger from stopping or being damaged due to signal board failure. The introduction of the temperature sensor and the fault detection circuit not only improves the reliability and safety of the system, but also provides convenience for maintenance personnel, which helps to quickly locate and solve problems.

[0059] Embodiment 5

[0060] The difference between this embodiment and the above-mentioned embodiments is that:

[0061] A wave-absorbing material coating is added to the shielding cover body 31 of the shielding cover assembly 3 to absorb excess electromagnetic waves and further improve the electromagnetic shielding effect. The wave-absorbing material coating is made of high-performance wave-absorbing materials such as carbon fibers or graphene, which have good wave-absorbing performance and temperature resistance. The wave-absorbing material coating is uniformly covered on the inner surface of the shielding cover body 31 through spraying or coating process, and the thickness can be adjusted according to actual needs. The wave-absorbing material coating not only absorbs electromagnetic waves but also reduces the reflection of electromagnetic waves, further improving the shielding effect. The surface of the wave-absorbing material coating is treated to ensure its bonding strength with the shielding cover body 31 and prevent it from falling off.

[0062] The implementation principle of this embodiment is:

[0063] This embodiment further improves the electromagnetic shielding effect by adding a wave-absorbing material coating to the shielding cover body 31 of the shielding cover assembly 3. The wave-absorbing material coating can absorb excess electromagnetic waves, reduce the reflection of electromagnetic waves, and ensure the stability and reliability of the charger in complex electromagnetic environments. This improvement is particularly suitable for occasions with high electromagnetic compatibility requirements, such as medical devices, precision instruments, and other fields, to ensure that the system is not affected by external electromagnetic interference.

[0064] The embodiments of the specific implementation are preferred embodiments of the present application, but do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A signal connector of a new energy vehicle charger, characterized in that, The application relates to a straight connector assembly (1) which is electrically connected with a signal plate assembly (2), is provided with a shielding cover assembly (3) and cooperates with the shielding cover assembly (3) to wrap the signal plate assembly (2), and is provided with a spring piece (4) on the shielding cover assembly (3) for conducting ground with a metal shell of a charger.

2. The signal connector of the new energy vehicle charger according to claim 1, characterized in that, The straight connector assembly (1) comprises signal terminals (11) and power terminals and a glue shell (12), and the signal terminals (11) and the power terminals are integrally injection molded with the glue shell (12).

3. The signal connector of the new energy vehicle charger according to claim 2, characterized in that, The glue shell (12) is provided with a sealing structure (13).

4. The signal connector of the new energy vehicle charger according to claim 1, characterized in that, The signal plate assembly (2) comprises a PCB (21) which is provided with filter devices (22) and adapter connectors (23) and is provided with a ground screw (24) on a side close to the shielding cover assembly (3).

5. The signal connector of the new energy vehicle charger according to claim 1, characterized in that, The shielding cover assembly (3) comprises a shielding cover body (31) and a fastener (32), and the shielding cover body (31) is fixed on the signal plate assembly (2) through the fastener (32).

6. The signal connector of the new energy vehicle charger according to claim 5, characterized in that, The shielding cover body (31) is provided with an open slot (5) for avoiding or fittingly installing a cable extended from the signal plate assembly (2).

7. The signal connector of the new energy vehicle charger according to claim 1, characterized in that, The spring piece (4) is made of elastic metal material and can be elastically deformed under stress, so that the shielding cover assembly (3) and the metal shell of the charger are always kept in contact, and the electromagnetic shielding effect is ensured.

8. The signal connector of the new energy vehicle charger according to claim 7, characterized in that, The spring piece (4) is provided with a plurality of spring pieces.

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