CN223912006U - A signal connector for a new energy vehicle charger - Google Patents

Abstract

The application relates to the technical field of signal connection of a new energy automobile charger, in particular to a signal connector of a new energy automobile charger. The battery charger comprises a direct connector assembly, wherein the assembly is electrically connected with a signal board assembly and is provided with a shielding cover assembly, and an elastic metal reed is arranged on the shielding cover assembly and is in conductive connection with a metal shell of the battery charger to be 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 board with a filter device and a switching connector and a grounding stud. The shielding cover assembly is fixed on the signal board assembly through the fastener, and the opening groove on the shielding cover body can avoid or be embedded with the cable which is connected and extended by the signal board assembly. The application improves the stability and reliability of signal connection, enhances the electromagnetic shielding effect, and ensures the safety and anti-interference capability of signal transmission in the charging process.

Description

Signal connector of new energy automobile charger

Technical Field

The application relates to the technical field of signal connection of a new energy automobile charger, in particular to a signal connector of a new energy automobile charger.

Background

With the rapid development of new energy electric automobile markets, the performance stability of vehicles becomes an important point of attention for users. The charger is used as an important component of the new energy automobile, and the function and performance of the charger directly influence the running efficiency and safety of the whole automobile. The charger not only needs to efficiently complete electric energy conversion and management, but also needs to ensure stable and reliable work in complex electromagnetic environments. In order to improve the electromagnetic compatibility and reliability of the charger, new technologies and design schemes are continuously explored in the industry.

In the prior art, the connection between the internal signal board of the charger and the external cable is usually welded to the PCB board by adopting a bent signal connector, and the connection between the internal signal board of the charger and the external cable is realized through a through hole on a metal casing of the charger. In addition, common solutions include the use of sealing rings and glue to enhance the tightness of the connection and the addition of shielding to reduce electromagnetic interference. However, these methods have some limitations in practical applications.

Although the above method can improve the sealability and electromagnetic compatibility of the charger to some extent, there are significant disadvantages. Because the contact between the shielding cover and the shell of the charger is unstable, the electromagnetic shielding effect is poor, and the EMC standard cannot be completely met.

Based on the above-mentioned problems, the prior art is therefore to be improved.

Disclosure of utility model

The application aims to provide a signal connector of a new energy automobile charger.

The technical aim of the application is achieved by the following technical scheme that the signal connector of the new energy automobile charger comprises a straight connector component, wherein the straight connector component is electrically connected with a signal board component, a shielding cover component is arranged on the straight connector component, the signal board component is wrapped by the straight connector component and the shielding cover component in a matched mode, and a reed is arranged on the shielding cover component and used for being grounded through a metal shell of the charger.

Through adopting above-mentioned technical scheme, can prevent effectively that boost inductor and power conversion unit's electromagnetic signal from interfering with the signal board, avoid the signal mutual crosstalk between the multichannel circuit, solve module circuit's EMC problem. Meanwhile, the shielding cover structure with the reed ensures good contact between the shielding cover and the metal shell of the charger, and can maintain stable electromagnetic shielding effect even under the condition of insufficient machining error or screw locking force. The sealing device also has the characteristics of convenience in installation and excellent sealing performance, and is suitable for various environments.

Optionally, the direct connector assembly includes a signal terminal, a power terminal and a rubber housing, the signal terminal and the power terminal being injection molded with the rubber housing.

By adopting the technical scheme, the whole connector is more compact in structure, and the welding reliability and mechanical strength of the terminal are improved. Meanwhile, the integrated design simplifies the assembly process, reduces the assembly process and reduces the production cost. In addition, the integral structure of moulding plastics has still strengthened the whole sealing performance of connector, prevents that moisture and other impurity from getting into inside the connector, has ensured the stability and the reliability of connector under adverse circumstances.

Optionally, a sealing structure is arranged on the rubber shell.

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

Optionally, the signal board assembly includes the PCB board, be equipped with filter and switching connector on the PCB board, the PCB board is close to shield cover assembly one side is equipped with the ground connection double-screw bolt.

By adopting the technical scheme, the filter device can effectively filter noise caused by the signal transfer cable, improve the purity and stability of signal transmission, ensure good electrical connection between the signal board assembly and the shielding cover assembly by the grounding stud, further enhance electromagnetic shielding effect, reduce the influence of electromagnetic interference and improve the EMC performance of the whole system.

Optionally, the shielding case assembly includes a shielding case body and a fastener, and the shielding case body is fixed on the signal board assembly through the fastener.

Through adopting above-mentioned technical scheme, can ensure the firm connection between shield cover and the signal board, improve packaging efficiency and reliability. Meanwhile, the shielding cover body can effectively wrap the signal board assembly, interference of external electromagnetic signals is reduced, and electromagnetic compatibility of the whole signal connector is improved. The design of the fastener also simplifies the installation process and improves the production efficiency.

Optionally, an opening slot is formed in the shielding cover body and is used for avoiding or embedding the cable which is connected and extends out of the signal board assembly.

Through adopting above-mentioned technical scheme, can ensure that the cable is smooth and easy business turn over, reduce the friction between cable and the shield cover simultaneously, avoid leading to the cable to loosen or contact failure because of the vibration, improve the stability and the reliability of charger signal transmission. The design of open slot can also effectively control the position that the cable was gone into, avoids electromagnetic signal to leak in a large number from the gap between shield cover and the cable, keeps good electromagnetic shield effect.

Optionally, the reed is made of elastic metal material, and can elastically deform when stressed, so that the shielding cover assembly and the metal shell of the charger are always kept in contact, and the electromagnetic shielding effect is ensured.

Through adopting above-mentioned technical scheme, the reed adopts elastic metal material to make, can take place elastic deformation when the atress, ensures that shield cover subassembly and the metal casing of machine that charges remain in close contact throughout to effectively prevent electromagnetic signal's leakage, improve the electromagnetic compatibility of machine that charges, ensure that electromagnetic properties accords with the EMC requirement.

Optionally, a plurality of reeds are provided.

Through adopting above-mentioned technical scheme, the design of a plurality of reeds has ensured the multipoint contact between shield cover subassembly and the metal casing of charging machine, has improved the reliability and the homogeneity of electromagnetic shielding effect, even lead to partial reed contact failure because of reasons such as vibration in the charging machine operation process, other reeds still can keep good ground effect, have ensured electromagnetic compatibility (EMC) requirement. In addition, the multipoint contact also reduces the problem of pressure concentration of a single reed, prolongs the service life of the reed and reduces the maintenance cost.

In summary, the application at least comprises the following advantages:

1. The shielding cover structure with the reed is designed and is wrapped by the signal board component matched with the connector, so that electromagnetic signal interference of the boost inductor and the power conversion unit can be effectively prevented, mutual crosstalk of signals between multichannel circuits is avoided, and EMC performance of the module circuit is remarkably improved;

2. The shielding cover structure adopts the reed made of elastic metal material, so that the reed can elastically deform when being stressed, and when the connector and shielding reed combined structure is locked on the metal shell by using the screw, a gap caused by processing errors or insufficient locking force of the screw is avoided, the shielding cover is ensured to be always in good contact with the shell, and the electromagnetic shielding effect is ensured;

3. The direct connector assembly and the rubber shell are molded into a whole, and the sealing mechanism is arranged, so that the connector is locked and attached to the through hole of the shell of the charger through the sealing mechanism, external moisture can be effectively prevented from entering the interior of the charger, the overall tightness of the connector and the charger is improved, and the severe environmental requirements are met.

Drawings

FIG. 1 is an assembly schematic of a signal connector of a new energy vehicle charger;

FIG. 2 is an exploded schematic view of a signal connector of the new energy vehicle charger;

FIG. 3 is a schematic structural view of a shield assembly;

FIG. 4 is a schematic structural view of a straight connector assembly;

fig. 5 is a schematic structural view of a signal board assembly.

Reference numerals

1. The direct connector assembly, 11, a signal terminal, 12, a rubber shell, 13, a sealing structure, 2, a signal board assembly, 21, a PCB (printed circuit board), 22, a filter device, 23, a switching connector, 24, a grounding stud, 3, a shielding cover assembly, 31, a shielding cover body, 32, a fastener, 4, a reed and 5, and an open slot.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings.

Example 1

In this embodiment, referring to fig. 1-5, a signal connector of a new energy automobile charger includes a straight connector assembly 1, the straight connector assembly 1 is electrically connected with a signal board assembly 2, a shielding cover assembly 3 is arranged on the straight connector assembly 1, the signal board assembly 2 is wrapped by the straight connector assembly 1 and the shielding cover assembly 3 in a matching manner, a reed 4 is arranged on the shielding cover assembly 3 and is used for being grounded with a metal shell of the charger, so that the effects of effectively preventing electromagnetic interference and improving sealing performance are achieved.

Specifically, referring to fig. 4, the straight connector assembly 1 includes a signal terminal 11, a power terminal, and a rubber housing 12, and the signal terminal 11 and the power terminal are injection molded integrally with the rubber housing 12. The signal terminal 11 and the power terminal can be made of materials with good conductive performance such as copper alloy or tin phosphor bronze, and the rubber shell 12 is made of high-temperature-resistant and corrosion-resistant polycarbonate materials. The signal terminal 11 and the power terminal are tightly combined with the rubber shell 12 through an injection molding process, so that the connection strength is improved, and the subsequent welding operation is facilitated. The rubber shell 12 is provided with a sealing structure 13, such as a rubber sealing ring or a silica gel sealing gasket, so as to ensure the tightness of the through hole of the connector and the battery charger shell, thereby realizing the sealing function.

Specifically, referring to fig. 5, the signal board assembly 2 includes a PCB 21, a filter 22 and an adapter connector 23 are disposed on the PCB 21, and a grounding stud 24 is disposed on a side of the PCB 21 adjacent to the shield can assembly 3. The PCB 21 is fabricated using high density interconnect technology with high routing density and signal integrity. The filter device 22 may be a ceramic capacitor, an electrolytic capacitor, ferrite beads, or the like to filter high frequency noise. The adapter connector 23 employs a high-reliability connector such as a Fakra connector or a Micro-Fit connector, ensuring stability and reliability of signal transmission. The grounding stud 24 is made of silver-plated or nickel-plated stainless steel material, has good conductivity and corrosion resistance, and is fixed on the PCB 21 through threaded connection to form reliable electrical connection with the shielding cover assembly 3.

In particular, referring to fig. 2-3, the shield assembly 3 includes a shield body 31 and a fastener 32, the shield body 31 being secured to the signal board assembly 2 by the fastener 32. The shield body 31 is made of a cold-rolled steel plate or an aluminum alloy material through a stamping forming process, and the surface is subjected to an oxidation-resistant treatment, so that rust or corrosion cannot be generated in the long-term use process. The fastener 32 can be a self-tapping screw or a spring buckle, and the shielding cover body 31 is firmly fixed on the PCB 21 through the fastener 32, so that the shielding cover is tightly attached to the signal board assembly 2, and electromagnetic interference is reduced.

Specifically, referring to fig. 3, an opening slot 5 is provided on the shielding case body 31 for avoiding or fitting the cable extending from the connection of the signal board assembly 2. The width and the height of the open slot 5 can be precisely designed according to the diameter of the cable to ensure that the cable can smoothly pass through the open slot 5, and simultaneously maintain a good clamping effect and prevent the cable from loosening or falling off in the vibration process. The edges of the open slot 5 may be rounded to reduce wear on the cable.

Specifically, referring to fig. 1, a reed 4 is arranged on the shielding cover assembly 3, and the reed 4 is made of an elastic metal material and can elastically deform when stressed, so that the shielding cover assembly 3 and the metal shell of the charger are always in contact, and the electromagnetic shielding effect is ensured. The reed 4 can be made of beryllium bronze or stainless steel, and has good elasticity and fatigue resistance. The number of the reeds 4 can be adjusted according to actual requirements, for example, a plurality of reeds 4 are arranged to increase the contact area and the contact pressure and improve the electromagnetic shielding effect. The reed 4 can be manufactured by a stamping forming process, and the surface is subjected to oxidation prevention treatment, so that the elasticity of the reed is not lost in the long-term use process.

The implementation principle of the embodiment is as follows:

The present embodiment achieves effective sealing and electromagnetic shielding of the signal connector by designing a combined structure of the straight connector assembly 1, the signal board assembly 2 and the shield cover assembly 3. The direct connector assembly 1 tightly combines the signal terminal 11 and the power terminal with the rubber housing 12 through an injection molding process, and ensures connection strength and sealing performance. The signal board assembly 2 ensures stability and reliability of signal transmission through the filter device 22 and the transit connector 23. The shielding cover assembly 3 is always in contact with the metal shell of the charger through the reed 4, so that electromagnetic interference is effectively reduced. The whole structure is compact, the installation is convenient and fast, the device is suitable for various environments, and the device has high practical value.

Example 2

The present embodiment is different from the above embodiment in that:

The waterproof and breathable film is added on the rubber shell 12 of the straight connector assembly 1 and used for balancing the internal and external air pressure and preventing moisture from entering the connector. The waterproof breathable film is made of PTFE material, has good breathability and waterproofness, can effectively prevent moisture from entering the connector, and simultaneously allows internal and external gas exchange to keep the connector dry. The waterproof and breathable film is mounted on the sealing structure 13 of the rubber shell 12 and is fixed through ultrasonic welding or an adhesive, so that firmness and reliability are ensured.

The implementation principle of the embodiment is as follows:

The embodiment further improves the sealing performance and the waterproof performance of the connector by adding a waterproof and breathable film on the rubber shell 12 of the straight connector assembly 1. The waterproof and breathable film can effectively prevent moisture from entering the connector, and simultaneously allows internal and external gas exchange to keep the connector dry. The service life of the connector is prolonged, and the reliability and stability of the charger under severe environments are improved.

Example 3

The present embodiment is different from the above embodiment in that:

Radiating fins are added on the shielding cover body 31 of the shielding cover assembly 3, so that radiating effect is improved, and overheat of the signal board assembly 2 is prevented. The radiating fins are made of aluminum alloy materials, and have good heat conductivity and light weight. The heat radiation fin is manufactured by a stamping forming process, and the surface is anodized, so that the corrosion resistance and the attractiveness of the heat radiation fin are enhanced. The number and distribution of the heat radiation fins can be adjusted according to actual requirements so as to ensure the best heat radiation effect. The heat radiation fins and the shield body 31 are fixed by welding or riveting, so that the heat radiation fins and the shield body are ensured to be firm and reliable.

The implementation principle of the embodiment is as follows:

In this embodiment, by adding the heat dissipation fins on the shield body 31 of the shield assembly 3, the heat dissipation effect of the signal board assembly 2 is effectively improved, and performance degradation or damage caused by overheating is prevented. The design of the radiating fins not only enhances the radiating performance, but also improves the structural strength of the shielding case, so that the shielding case is more durable. This improvement is particularly suitable for chargers used in high temperature environments, ensuring their stability and reliability under extreme conditions.

Example 4

The present embodiment is different from the above embodiment in that:

The PCB 21 of the signal board assembly 2 is added with a temperature sensor and a fault detection circuit for monitoring the working state of the signal board in real time. The temperature sensor adopts an NTC thermistor and has the characteristics of high response speed and high precision. The fault detection circuit comprises a voltage detection circuit and a current detection circuit and is used for monitoring the power supply voltage and the working current of the signal board, and once abnormality is found, an alarm is immediately given. The temperature sensor and the fault detection circuit are welded on the PCB 21 through an SMT process, so that the occupied space is small and the integration level is high. The data of the temperature sensor are 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, so that the timeliness and the accuracy of data transmission are ensured.

The implementation principle of the embodiment is as follows:

In the embodiment, the temperature sensor and the fault detection circuit are added on the PCB 21 of the signal board assembly 2, so that the real-time monitoring and the fault early warning of the working state of the signal board are realized. The improvement measure can discover potential faults in advance, and timely take measures to avoid shutdown or damage of the charger caused by the fault of the signal board. The temperature sensor and the fault detection circuit are introduced, so that the reliability and the safety of the system are improved, convenience is provided for maintenance personnel, and quick positioning and problem solving are facilitated.

Example 5

The present embodiment is different from the above embodiment in that:

the wave absorbing material coating is added on the shielding cover body 31 of the shielding cover assembly 3 and is used for absorbing redundant electromagnetic waves, so that the electromagnetic shielding effect is further improved. The wave-absorbing material coating adopts high-performance wave-absorbing materials such as carbon fiber or graphene, and has good wave-absorbing performance and temperature resistance. The wave-absorbing material coating is uniformly coated on the inner surface of the shielding case body 31 through a spraying or coating process, and the thickness can be adjusted according to actual requirements. The wave absorbing material coating can absorb electromagnetic waves, reduce the reflection of the electromagnetic waves and further improve the shielding effect. The surface of the wave-absorbing material coating is treated to ensure the bonding strength with the shield case body 31 and prevent the falling off.

The implementation principle of the embodiment is as follows:

The present embodiment further improves the electromagnetic shielding effect by adding a wave-absorbing material coating on the shield body 31 of the shield assembly 3. The wave absorbing material coating can absorb redundant electromagnetic waves, reduce the reflection of the electromagnetic waves and ensure the stability and reliability of the charger in a complex electromagnetic environment. The improvement measure is particularly suitable for occasions with higher requirements on electromagnetic compatibility, such as the fields of medical equipment, precise instruments and the like, and ensures that the system is not influenced by external electromagnetic interference.

The embodiments of the present application are all preferred embodiments of the present application, and are not limited in scope by the present application, so that all equivalent changes according to the structure, shape and principle of the present application are covered by the scope of the present application.

Claims (8)

1. The utility model provides a signal connector of new energy automobile machine that charges, its characterized in that, including straight connector assembly (1), straight connector assembly (1) electricity is connected with signal board subassembly (2), be equipped with shield cover subassembly (3) on straight connector assembly (1), straight connector assembly (1) with shield cover subassembly (3) cooperation parcel signal board subassembly (2), be equipped with reed (4) on shield cover subassembly (3) for with the machine metal casing switch-on ground connection that charges.

2. The signal connector of the new energy automobile charger according to claim 1, wherein the straight connector assembly (1) comprises a signal terminal (11), a power terminal and a rubber shell (12), and the signal terminal (11) and the power terminal are integrally molded with the rubber shell (12).

3. The signal connector of the new energy automobile charger according to claim 2, wherein the rubber shell (12) is provided with a sealing structure (13).

4. The signal connector of the new energy automobile charger according to claim 1, wherein the signal board assembly (2) comprises a PCB board (21), a filter device (22) and a transfer connector (23) are arranged on the PCB board (21), and a grounding stud (24) is arranged on one side of the PCB board (21) close to the shielding cover assembly (3).

5. The signal connector of a new energy automobile charger according to claim 1, wherein the shielding case assembly (3) comprises a shielding case body (31) and a fastener (32), and the shielding case body (31) is fixed on the signal board assembly (2) through the fastener (32).

6. The signal connector of the new energy automobile charger according to claim 5, wherein the shielding cover body (31) is provided with an opening groove (5) for avoiding or embedding the cable connected and extended by the signal board assembly (2).

7. The signal connector of the new energy automobile charger according to claim 1, wherein the reed (4) is made of elastic metal material, and can elastically deform when stressed, 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 a new energy automobile charger according to claim 7, wherein the reed (4) is provided with a plurality of reeds.