7kw ac electric vehicle charging pile

Abstract

The utility model relates to electric automobile charging technical field, and disclose a 7kW alternating current electric automobile charging pile system, including the cabinet main part, the cabinet main part is integrated and is installed with control module, communication module, power module, user interactive module and safety protection module in the installation, control module and communication module carry out electricity connection through RS485 bus, control module is electrically connected with power module through internal cable, power module is electrically connected with the charging gun, communication module is by 4G unit module and bluetooth module constitute bimodulus communication architecture, when 4G signal intensity is below -85dBm, automatically switches to bluetooth control mode, the user interactive module includes card swiping device and display screen, card swiping device with control module electricity is connected, safety protection module with charging gun carries out mechanical connection. This system has solved the technical problem that alternating current charger system performance is unstable, poor adaptability in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle charging technology, specifically a 7kW AC electric vehicle charging pile. Background Technology

[0002] Public AC charging stations face the core contradiction of "too many vehicles, too few charging stations." Currently, 7kW AC chargers are the mainstream charging equipment in residential areas and commercial venues, and the need for technological upgrades is becoming increasingly prominent.

[0003] Current AC charger systems face significant technical bottlenecks: In terms of communication, traditional equipment often uses a single 4G module, which is susceptible to network signal fluctuations and lacks a local Bluetooth near-field control channel; in terms of security, mechanical charging gun locking mechanisms are vulnerable to forced entry, and cabinets with IP54 or lower protection ratings are ill-suited for complex outdoor environments; in short, traditional AC charger systems are unstable and have poor adaptability. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a 7kW AC electric vehicle charging pile. The communication module of this system adopts a 4G and Bluetooth dual-mode communication architecture, and the communication module is electrically connected to the control module. This structural design enables automatic switching between the two modes, ensuring the continuity of charging command transmission. In addition, the charging gun adopts a mechanically interlocked electronic lock, which improves safety and solves the technical problems of unstable performance and poor adaptability of existing AC charging systems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a 7kW AC electric vehicle charging pile, comprising a cabinet body, wherein a control module, a communication module, a power module, a user interaction module, and a safety protection module are integrated and installed within the cabinet body. The control module and the communication module are electrically connected via an RS485 bus. The control module is electrically connected to the power module via internal cables, and the power module is electrically connected to the charging gun. The communication module consists of a 4G unit module and a Bluetooth module forming a dual-mode communication architecture, automatically switching to Bluetooth control mode when the 4G signal strength is below -85dBm. The user interaction module includes a card reader and a display screen. The card reader is electrically connected to the control module, and the safety protection module is mechanically connected to the charging gun.

[0006] Furthermore, the power module includes an EMI filter, an AC / DC converter, and an LLC resonant circuit connected in sequence, wherein the output of the LLC resonant circuit is connected to a temperature-compensated current sensor.

[0007] Furthermore, the safety protection module includes a mechanically interlocked electronic lock, which is driven by a PWM signal and has a built-in triaxial accelerometer. When the sensor detects abnormal vibration, it triggers an emergency stop.

[0008] Furthermore, it also includes a display panel installed on the front of the main body of the cabinet, which is electrically connected to the control module via an FPC cable.

[0009] Furthermore, a wall-mounted mounting plate is installed on the back of the main cabinet body for wall mounting.

[0010] Furthermore, a column is installed at the center of the bottom of the main body of the cabinet for column-type installation, and a base is installed at the lower end of the column.

[0011] Compared with the prior art, this utility model provides a 7kW AC electric vehicle charging pile, which has the following beneficial effects:

[0012] 1. The system's communication module adopts a 4G and Bluetooth dual-mode communication architecture. This design can automatically switch to Bluetooth mode when the 4G signal strength is below -85dBm, ensuring the continuity of charging command transmission. The power module achieves a conversion efficiency of 94% through a three-stage processing architecture of EMI filter, AC / DC converter and LLC resonant circuit. Combined with a temperature-compensated current sensor to calibrate the output in real time, it significantly improves the accuracy of power utilization and enhances the stability of performance.

[0013] 2. The system's safety protection module is mechanically interlocked with the charging gun via a PWM-driven electronic lock. The built-in three-axis acceleration sensor can trigger an emergency stop within 20ms when abnormal vibrations greater than 5g are detected. It also provides two installation modes: wall-mounted (load-bearing capacity 50kg) and column-mounted (adjustable anchor bolt base), to adapt to different scenario requirements and expand the applicability of equipment deployment. Attached Figure Description

[0014] Figure 1 This is a perspective view of the wall-mounted design of this utility model.

[0015] Figure 2 This is a perspective view of the present invention using a column-supported design;

[0016] Figure 3 This is a schematic diagram of the internal electrical connections of the cabinet body of this utility model;

[0017] Figure 4 This is a front view of the wall-mounted mounting plate of this utility model;

[0018] Figure 5 This is a front view of the base of this utility model;

[0019] In the diagram: 1. Cabinet main body; 101. Wall-mounted mounting plate; 102. Column; 103. Base; 2. Control module; 3. Communication module; 301. 4G unit module; 302. Bluetooth module; 4. Power module; 401. EMI filter; 402. AC / DC converter; 403. LLC resonant circuit; 404. Temperature-compensated current sensor; 5. User interaction module; 501. Card reader; 502. Display screen; 6. Security protection module; 601. Electronic lock; 602. Triaxial accelerometer; 7. Charging gun; 8. Indicator light panel. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0021] Please see Figure 1 , Figure 3 and Figure 4 A 7kW AC electric vehicle charging pile includes a cabinet body 1, characterized in that: the cabinet body 1 integrates and installs a control module 2, a communication module 3, a power module 4, a user interaction module 5, and a safety protection module 6, and also includes a display light panel 8 installed on the front of the cabinet body 1, the display light panel 8 being electrically connected to the control module 2 via an FPC cable; the control module 2 and the communication module 3 are electrically connected via an RS485 bus, the control module 2 is electrically connected to the power module 4 via internal cables, and the power module 4 is electrically connected to the charging gun 7; the communication module 3 consists of a 4G unit module 301 and a Bluetooth module 302 forming a dual-mode communication architecture, when the 4G signal strength is lower than - Automatically switches to Bluetooth control mode at 85dBm; Power module 4 includes an EMI filter 401, an AC / DC converter 402, and an LLC resonant circuit 403 connected in sequence, wherein the output terminal of the LLC resonant circuit 403 is connected to a temperature-compensated current sensor 404; User interaction module 5 includes a card reader 501 and a display screen 502. The card reader 501 is electrically connected to the control module 2, and the safety protection module 6 is mechanically connected to the charging gun 7; The safety protection module 6 includes a mechanically interlocked electronic lock 601. The electronic lock 601 is driven by a PWM signal and has a built-in three-axis accelerometer 602. When the sensor 602 detects abnormal vibration, it triggers an emergency stop action.

[0022] In the above embodiment, a wall-mounted mounting plate 101 is installed on the back of the cabinet body 1 for wall-mounted installation. Mounting holes are provided at the four corners of the wall-mounted mounting plate 101. The wall-mounted mounting plate 101 is fixed to the wall through these holes. The cabinet body 1 is quickly inserted and installed onto the wall-mounted mounting plate 101 from bottom to top, completing the wall-mounted installation. Example

[0023] The difference between this embodiment and Embodiment 1 is that the main body 1 of the 7kW AC electric vehicle charging pile can be wall-mounted as in Embodiment 1 or column-mounted. Specifically, a column 102 is installed at the center of the bottom of the main body 1 for column-mounted installation, and a base 103 is installed at the lower end of the column 102. Mounting holes are provided at the four corners of the base 103. The column 102, mounted on the base 103, is fixed to the ground through these holes, and the main body 1 is then installed on the column 102, completing the column-mounted installation.

[0024] The working principle of the above embodiment 1 or embodiment 2 is as follows:

[0025] During operation, the system is seamlessly controlled by the control module 2 via a dual-mode communication architecture. When the 4G unit module 301 detects a signal strength below -85dBm, the Bluetooth module 302 is automatically activated to ensure uninterrupted command transmission. The power module 4 employs a three-stage processing architecture. After the EMI filter 401 eliminates grid harmonics, the AC / DC converter 402 and LLC resonant circuit 403 achieve a conversion efficiency of 94%. The temperature-compensated current sensor 404 calibrates the output accuracy in real time. The safety protection module 6 forms a mechanical interlock with the charging gun 7 via a PWM-driven electronic lock 601. The built-in triaxial accelerometer 602 triggers an emergency stop circuit to disconnect the output within 20ms when it detects abnormal vibrations greater than 5g. The user interaction module 5's card reader 501 supports the ISO / IEC 14443 protocol, and the display screen 502 displays the charging voltage / current curve in real time. All data is synchronously exchanged with the main control module 1 via an RS485 bus. The indicator light panel 8 is installed on the front of the main body 1 of the cabinet. When in standby mode, the blue light is always on; when charging, the yellow light is always on; when fully charged, the yellow light turns to green and stays on; and when a fault occurs, the red light stays on.

[0026] The system supports two installation modes: wall-mounted and column-mounted. The wall-mounted mode utilizes a rear-mounted mounting plate 101 with reinforcing ribs to distribute stress, achieving a maximum load capacity of 50kg. The column-mounted mode employs a column 102 with a flange-type base 103, and adjustable anchor bolts to adapt to different foundation conditions. These two installation modes cater to users' diverse installation needs, increasing installation flexibility.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A 7kW AC electric vehicle charging pile system, comprising a cabinet body (1), characterized in that: The main body (1) of the cabinet integrates and installs a control module (2), a communication module (3), a power module (4), a user interaction module (5), and a security protection module (6). The control module (2) and the communication module (3) are electrically connected via an RS485 bus. The control module (2) is electrically connected to the power module (4) via an internal cable. The power module (4) is electrically connected to the charging gun (7). The communication module (3) consists of a 4G unit module (301) and a Bluetooth module (302) forming a dual-mode communication architecture. When the 4G signal strength is lower than -85dBm, it automatically switches to Bluetooth control mode. The user interaction module (5) includes a card reader (501) and a display screen (502). The card reader (501) is electrically connected to the control module (2). The security protection module (6) is mechanically connected to the charging gun (7).

2. The 7kW AC electric vehicle charging pile system according to claim 1, characterized in that: The power module (4) includes an EMI filter (401), an AC / DC converter (402), and an LLC resonant circuit (403) connected in sequence, wherein the output terminal of the LLC resonant circuit (403) is connected to a temperature-compensated current sensor (404).

3. The 7kW AC electric vehicle charging pile system according to claim 1, characterized in that: The safety protection module (6) includes a mechanically interlocked electronic lock (601). The electronic lock (601) is driven by a PWM signal and has a built-in triaxial acceleration sensor (602). When the sensor (602) detects abnormal vibration, it triggers an emergency stop action.

4. The 7kW AC electric vehicle charging pile system according to claim 1, characterized in that: It also includes a display light panel (8) installed on the front of the main body (1) of the cabinet, and the display light panel (8) is electrically connected to the control module (2) via an FPC cable.

5. A 7kW AC electric vehicle charging pile system according to claim 1, characterized in that: A wall-mounted mounting plate (101) is installed on the back of the main body (1) of the cabinet for wall mounting.

6. A 7kW AC electric vehicle charging pile system according to claim 1, characterized in that: A column (102) is installed at the center of the bottom of the cabinet body (1) for column-type installation, and a base (103) is installed at the lower end of the column (102).

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