Charging pile structure having energy storage function and supporting direct current fast charging

Abstract

The utility model discloses a charging pile structure with an energy storage function and capable of supporting direct current fast charging, which comprises a box body, and a mains supply input protection unit, a charging pile main control unit, an alternating current output unit, a battery management unit, a boosting unit, an AC / DC unit, an energy storage unit and a direct current fast charging output unit are arranged in the box body. The commercial power input protection unit integrates over-current protection, overheat protection, leakage protection, surge protection, filtering and electromechanical protection, and the charging pile main control unit integrates a communication interface chip, a microcontroller and a power management chip. According to the utility model, the main control unit and the battery management unit are utilized, and a structure that common 220V alternating current is converted into 800V high-voltage direct current by means of the boosting unit and the AC / DC unit is applied to the charging pile, so that common families and old communities can also use the high-voltage quick-charging charging pile, a large amount of charging waiting time can be received, and the impact on a power grid can also be reduced.

Description

Technical Field

[0001] This utility model relates to the field of power transmission and transformation technology, and in particular to a charging pile structure with energy storage function that supports DC fast charging. Background Technology

[0002] Currently, conventional 220V charging stations use AC charging, converting it to DC using the vehicle's onboard computer (OBC) to charge the vehicle's battery. The standard charging power is 7kW, which is considered a slow charging station. This invention integrates a transformer, an AC inverter, and an energy storage unit (equipped with an 80KVA battery) to boost the 220V voltage to 800V, then convert it to DC and store it in the energy storage unit. During charging, it directly charges with 800V DC high voltage, achieving 80kW fast charging.

[0003] Currently, most households and older communities use a 220V power supply, which limits the use of only 7kW slow charging stations, resulting in very long charging times. This invention utilizes power transmission and transformation, power electronics, and energy storage technologies to achieve 800V high-voltage DC charging with a charging power of up to 80kW, thus solving the problem of long charging times. Utility Model Content

[0004] The purpose of this invention is to provide a charging pile structure with energy storage function that supports DC fast charging in order to solve the above problems.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a charging pile structure with energy storage function supporting DC fast charging, including a housing. The housing internally houses a mains input protection unit, a charging pile main control unit, an AC output unit, a battery management unit, a boost unit, an AC / DC unit, an energy storage unit, and a DC fast charging output unit. The mains input protection unit integrates overcurrent protection, overheat protection, leakage protection, surge protection, filtering, and electromechanical protection. The charging pile main control unit integrates a communication interface chip, a microcontroller, a power management chip, a power switch chip, a charging control chip, sensors, and a display chip. The AC output unit integrates a safety protection module, a controller, and sensors. The battery management unit integrates a master controller, a slave controller, an equalization module, a high-voltage controller, and a battery status indicator unit. The boost unit integrates a safety protection module, a transformer, a controller, and sensors. The AC / DC unit integrates an AC inverter, a controller, and sensors. The energy storage unit integrates an energy storage battery, a controller, and sensors. The DC fast charging output unit integrates a safety protection module, a controller, and sensors.

[0007] As a preferred technical solution of the charging pile structure with energy storage function supporting DC fast charging according to this utility model, the main control unit of the charging pile controls the AC power input protection unit to be connected to the AC output unit and the boost unit. The boost unit is connected to the AC / DC unit. The main control unit of the charging pile controls the operation of the battery management unit. The battery management unit controls the AC / DC unit, the energy storage unit and the DC fast charging output unit to be connected.

[0008] As a preferred technical solution of the charging pile structure with energy storage function supporting DC fast charging according to this utility model, when the user uses a slow charging plug, the main control unit of the charging pile automatically controls the mains power to go through the mains power input protection unit to the AC output unit, and the electrical energy charges the electric vehicle through the AC output unit. When it is detected that the vehicle is fully charged, the main control unit of the charging pile controls the AC output unit to automatically disconnect.

[0009] As a preferred technical solution of the charging pile structure with energy storage function supporting DC fast charging according to this utility model, when the user uses the fast charging plug, the main control unit of the charging pile sends a signal to the battery management unit. The battery management unit controls the energy storage unit to connect with the DC fast charging output unit, and electrical energy is used to charge the electric vehicle from the energy storage unit through the DC fast charging output unit. At the same time, the battery management unit controls the AC / DC unit to connect with the energy storage unit to charge the energy storage unit using mains power. When a full charge is detected, the main control unit of the charging pile controls the DC fast charging output unit to disconnect. When a full charge is detected, the battery management unit controls the AC / DC unit to disconnect from the energy storage unit.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This invention utilizes a main control unit and a battery management unit, along with a boost unit and an AC / DC unit, to convert ordinary 220V AC power into 800V high-voltage DC power. When applied to charging piles, this allows ordinary households and older communities to use high-voltage fast charging piles, reducing charging waiting time and minimizing the impact on the power grid. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is the logic control diagram of this utility model;

[0014] Figure 2 This is the electrical wiring diagram for this utility model;

[0015] In the diagram: 1. Housing; 2. Mains input protection unit; 3. Charging pile main control unit; 4. AC output unit; 5. Battery management unit; 6. Boost unit; 7. AC / DC unit; 8. Energy storage unit; 9. DC fast charging output unit. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0017] In the attached diagram, all identical reference numerals refer to the same components.

[0018] Example 1

[0019] like Figure 1-2 As shown, the device includes a housing 1. Inside the housing 1 are a mains input protection unit 2, a charging pile main control unit 3, an AC output unit 4, a battery management unit 5, a boost unit 6, an AC / DC unit 7, an energy storage unit 8, and a DC fast charging output unit 9. The mains input protection unit 2 integrates overcurrent protection, overheat protection, leakage protection, surge protection, filtering, and electromechanical protection. The charging pile main control unit 3 integrates a communication interface chip, a microcontroller, a power management chip, a power switch chip, a charging control chip, a sensor, and a display chip. The AC output unit 4 integrates a safety protection module, a controller, and a sensor. The battery management unit 5 integrates a master controller, a slave controller, an equalization module, a high-voltage controller, and a battery status indicator unit. The boost unit 6 integrates a safety protection module, a transformer, a controller, and a sensor. The AC / DC unit 7 integrates an AC inverter, a controller, and a sensor. The energy storage unit 8 integrates an energy storage battery, a controller, and a sensor. The DC fast charging output unit 9 integrates a safety protection module, a controller, and a sensor.

[0020] Furthermore, the main control unit 3 of the charging pile controls the connection between the mains input protection unit 2 and the AC output unit 4 and the boost unit 6. The boost unit 6 is connected to the AC / DC unit 7. The main control unit 3 of the charging pile controls the operation of the battery management unit 5. The battery management unit 5 controls the connection between the AC / DC unit 7, the energy storage unit 8 and the DC fast charging output unit 9.

[0021] When the user uses a slow charging plug, the main control unit 3 of the charging pile automatically controls the mains power to go through the mains power input protection unit 2 to the AC output unit 4. The power is used to charge the electric vehicle through the AC output unit 4. When the vehicle is detected to be fully charged, the main control unit 3 of the charging pile controls the AC output unit 4 to automatically disconnect.

[0022] Example 2

[0023] like Figure 1-2As shown, when a user uses a fast charging plug, the charging pile main control unit 3 sends a signal to the battery management unit 5. The battery management unit 5 controls the energy storage unit 8 to connect with the DC fast charging output unit 9. Electrical energy is drawn from the energy storage unit 8 and charged to the electric vehicle via the DC fast charging output unit 9. At the same time, the battery management unit 5 controls the AC / DC unit 7 to connect with the energy storage unit 8 and charges the energy storage unit 8 using mains power. When a full charge is detected, the charging pile main control unit 3 controls the DC fast charging output unit 9 to disconnect. When the energy storage unit 8 is detected to be fully charged, the battery management unit 5 controls the AC / DC unit 7 to disconnect from the energy storage unit 8.

[0024] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A charging pile structure with energy storage function supporting DC fast charging, comprising a housing (1), characterized in that, The enclosure (1) contains a mains input protection unit (2), a charging pile main control unit (3), an AC output unit (4), a battery management unit (5), a boost unit (6), an AC / DC unit (7), an energy storage unit (8), and a DC fast charging output unit (9). The mains input protection unit (2) integrates overcurrent protection, overheat protection, leakage protection, surge protection, filtering, and electromechanical protection. The charging pile main control unit (3) integrates a communication interface chip, a microcontroller, a power management chip, a power switch chip, a charging control chip, and sensors. The display chip, the AC output unit (4) integrates a safety protection module, a controller and a sensor, the battery management unit (5) integrates a master controller, a slave controller, an equalization module, a high voltage controller and a battery status indicator unit, the boost unit (6) integrates a safety protection module, a transformer, a controller and a sensor, the AC / DC unit (7) integrates an AC inverter, a controller and a sensor, the energy storage unit (8) integrates an energy storage battery, a controller and a sensor, and the DC fast charging output unit (9) integrates a safety protection module, a controller and a sensor.

2. The charging pile structure with energy storage function supporting DC fast charging according to claim 1, characterized in that, The main control unit (3) of the charging pile controls the mains input protection unit (2) to connect with the AC output unit (4) and the boost unit (6). The boost unit (6) is connected with the AC / DC unit (7). The main control unit (3) of the charging pile controls the battery management unit (5) to work. The battery management unit (5) controls the AC / DC unit (7), the energy storage unit (8) and the DC fast charging output unit (9) to connect.

3. A charging pile structure with energy storage function supporting DC fast charging according to claim 2, characterized in that, When the user uses a slow charging plug, the main control unit (3) of the charging pile automatically controls the mains power to go through the mains power input protection unit (2) to the AC output unit (4). The power is used to charge the electric vehicle through the AC output unit (4). When it is detected that the vehicle is fully charged, the main control unit (3) of the charging pile controls the AC output unit (4) to automatically disconnect.

4. A charging pile structure with energy storage function supporting DC fast charging according to claim 2, characterized in that, When the user uses the fast charging plug, the main control unit (3) of the charging pile sends a signal to the battery management unit (5). The battery management unit (5) controls the energy storage unit (8) to connect with the DC fast charging output unit (9). Electricity is generated from the energy storage unit (8) and charged to the electric vehicle via the DC fast charging output unit (9). At the same time, the battery management unit (5) controls the AC / DC unit (7) to connect with the energy storage unit (8) and uses the mains power to charge the energy storage unit (8). When it is detected that the charging pile is fully charged, the main control unit (3) controls the DC fast charging output unit (9) to disconnect. When it is detected that the energy storage unit (8) is fully charged, the battery management unit (5) controls the AC / DC unit (7) to disconnect from the energy storage unit (8).

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