Comprehensive energy storage charging pile system

Abstract

The utility model discloses a comprehensive energy storage charging pile system, which comprises a charging pile body, an energy storage device and a current access module, the energy storage device is connected with the charging pile through a conversion module, and the current access module is at least one of an alternating current module and a solar charging module. The charging pile is connected with an energy storage device and a plurality of current access modules of alternating current, solar energy and the like. The system is ingeniously provided with a plurality of switches so as to flexibly control the charging process and the charging and discharging of the energy storage device. According to the utility model, various energy sources are flexibly utilized for charging, so that the continuous and stable operation of the charging pile is ensured, and the problem of charging interruption caused by voltage fluctuation is effectively avoided; and meanwhile, stable power support is provided for the charging pile through mutual cooperation with the energy storage device.

Description

Technical Field

[0001] This utility model relates to the field of charging technology, specifically to an integrated energy storage charging pile system. Background Technology

[0002] With the rapid development of the electric vehicle industry, electric vehicle charging stations, as a key facility for replenishing electric vehicle energy, are being constructed and operated on an increasingly large scale. However, the charging behavior of electric vehicle charging stations exhibits significant dispersion and random fluctuations, which greatly impacts the safe and stable operation of the charging system.

[0003] Especially for charging stations along highways, the peak usage times for electric vehicles are often during the day and evening due to the characteristics of highway traffic flow. This frequent fluctuation in usage patterns leads to a severe imbalance in the daily power consumption of charging stations. During peak hours, the simultaneous charging of a large number of electric vehicles places a tremendous load on the charging system.

[0004] This imbalance in power consumption fluctuations has multiple adverse effects on the power distribution system. Frequent load fluctuations affect voltage stability, potentially leading to a decline in power quality, which in turn impacts user experience and equipment safety. Furthermore, power supply reliability may be compromised, resulting in power outages or voltage fluctuations.

[0005] Meanwhile, charging during peak electricity price periods not only increases the load on the charging system but can also lead to high charging costs. This undoubtedly increases the operating costs for electric vehicle users and reduces the economic viability of electric vehicles.

[0006] To address the issues mentioned above, we provide an integrated energy storage charging pile system. Utility Model Content

[0007] The purpose of this invention is to provide an integrated energy storage charging pile system to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A comprehensive energy storage charging pile system includes a charging pile, characterized in that the charging pile is connected to an energy storage device and a current access module through a conversion module, wherein the current access module is at least one of an AC power module and a solar charging module.

[0010] Preferably, when the current access module is an AC power module, a switch S1 is provided between the AC power module and the conversion module, and a switch S2 is provided between the conversion module and the energy storage module. The charging pile is controlled by controlling the opening and closing of the switches S1 and S2.

[0011] Preferably, a switch S3 is provided between the charging pile and the conversion module. When the switch S3 is open, the switches S1 and S2 are closed to enable the AC power module to charge the energy storage device.

[0012] Preferably, when the current access module is a solar charging module, a switch S1 is provided between the solar charging module and the conversion module, and a switch S2 is provided between the conversion module and the energy storage module. The charging pile is controlled by controlling the opening and closing of the switches S1 and S2.

[0013] Preferably, a switch S3 is provided between the charging pile and the conversion module. When the switch S3 is open, the switches S1 and S2 are closed to enable the solar charging module to charge the energy storage device.

[0014] Preferably, when the current access module includes both an AC power module and a solar charging module, a switch S1 is provided between the AC power module and the conversion module, a switch S4 is provided between the solar charging module and the conversion module, and a switch S2 is provided between the conversion module and the energy storage module. The charging pile is controlled by controlling the opening and closing of the switch S1 or the switch S4 and the switch S2.

[0015] Preferably, a switch S3 is provided between the charging pile and the conversion device. When the switch S3 is open, the switch S1 or switch S4 and the switch S2 are closed to enable the AC power module or the solar charging module to charge the energy storage device.

[0016] Preferably, the system further includes a power consumption control module, which is located on the communication and control path between the conversion module and the charging pile.

[0017] Preferably, the energy storage device includes an interconnected battery pack and an energy monitoring unit.

[0018] Preferably, the conversion module contains at least one of an AC to DC controller and a DC to DC controller.

[0019] Compared with the prior art, the technical effects of this utility model are as follows:

[0020] The integrated energy storage charging pile system provided by this utility model can intelligently switch between different energy modules (AC power module and solar charging module) and cooperate with the energy storage device. When different energy modules malfunction, it can ensure that the voltage received by the charging pile remains within a stable and suitable range. This energy complementarity and intelligent switching mechanism effectively avoids charging interruptions caused by voltage instability, improving the reliability and continuity of the system.

[0021] The battery pack in the energy storage device works closely with the power monitoring unit to monitor and adjust the charging and discharging status in real time. Simultaneously, it stores energy during periods of low charging demand and releases it during peak periods, effectively balancing daily power consumption and reducing the load on the charging pile system. This function of balancing power consumption fluctuations helps reduce frequent voltage fluctuations, improves voltage stability, and thus enhances power quality, providing stable power support for the charging pile and ensuring a smooth power experience for users and safe operation of the equipment. Attached Figure Description

[0022] Figure 1 A schematic diagram of the electrical energy flow of the system provided by this utility model;

[0023] Figure 2 The current access module provided by this utility model is an AC power module with a power flow diagram.

[0024] Figure 3 The current access module provided by this utility model is a power flow diagram of a solar charging module;

[0025] Figure 4 A total energy flow diagram of an integrated energy storage charging pile system provided for embodiments of this utility model;

[0026] Figure 5 This is a schematic diagram of the modular structure of an integrated energy storage charging pile system provided for an embodiment of this utility model.

[0027] In the diagram: 1-Current input module, 2-Conversion module, 3-Charging pile, 4-Energy storage device, 5-Power control module, 101-AC power module, 102-Solar charging module, 201-AC to DC controller, 202-DC to DC controller, 401-Battery pack, 402-Power monitoring module. Detailed Implementation

[0028] 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.

[0029] This utility model provides the following technical solution: a comprehensive energy storage charging pile system, including a charging pile 3, wherein the charging pile 3 is connected to the energy storage device 4 and the current access module 1 through a conversion module 2. Figure 1 Specifically, the current access module 1 is at least one of AC power module 101 and solar charging module 102. The charging pile 3 is used to provide charging services for electric vehicles; the conversion module 2 is used to convert the current access module 1 and / or energy storage device 4 into DC power for use by the charging pile 3 and energy storage device 4. This conversion process ensures that the charging pile 3 can receive DC power suitable for its operation; the energy storage device 4 is used to store the electrical energy in the current access module 1 and can supply power to the charging pile 3 when needed.

[0030] Reference Figure 2 This figure illustrates one power supply method for the integrated energy storage charging pile system provided in this application. The current access module 1 is an AC power module 101, specifically a municipal power grid. To control the charging pile 3, a switch S1 is installed between the AC power module 101 and the conversion module 2, and a switch S2 is installed between the conversion module 2 and the energy storage device 4. By controlling the opening and closing states of these two switches, the system can flexibly adjust the operating mode of the charging pile 3 and ensure it receives a stable and suitable voltage supply. The conversion module 2 of the AC power module 101 is an AC-to-DC controller 201. Specifically, when the AC power module 101 (municipal power grid) is in peak usage, i.e., during periods of surging electricity demand (unstable voltage) and rising electricity prices, the system will control switches S1 and S2 to close simultaneously. This operation not only maintains the direct electrical connection between the AC power module 101 and the charging pile 3 but also simultaneously activates the energy storage device 4 as an auxiliary power source. The two work together to meet the stable voltage requirements of the charging pile 3, ensuring fast and efficient charging of the electric vehicle.

[0031] Preferably, the system also includes a switch S3 between the AC-to-DC controller 201 and the charging pile 3. When the charging pile 3 is idle and the power grid is in a low-power state, the switch S3 is disconnected, cutting off the electrical connection between the charging pile 3 and the AC-to-DC controller 201. This allows the AC module 101 to focus on charging the battery pack 401 in the energy storage device 4, thereby making full use of the low-priced electricity resources during off-peak hours and reducing the overall charging cost. More importantly, when the AC module 101 experiences voltage instability, the energy storage device 4 uses its stored electrical energy to provide a stable voltage to the charging pile 3 together with the AC module 101; or the switch S4 is disconnected, and the energy storage device 4 is used alone as the main power source for the charging pile 3.

[0032] Reference Figure 3 The figure shows another power supply method for the integrated energy storage charging pile system provided in this application. In this method, the current access module 1 is a solar charging module 102, which specifically consists of a solar panel and a solar cell module. The conversion module 2 in this method uses a DC to DC controller 202. Specifically, the power supply to the charging pile 3 is as described above. Figure 2 The description is consistent with that, so I will not elaborate further here.

[0033] The preferred charging method for the integrated energy storage charging pile system of this utility model, combined with the above-mentioned power supply method, involves an AC power module 101 and a solar charging module 102 as the current input module 1, and an AC-to-DC controller 201 and a DC-to-DC controller 202 as the conversion devices 2. To achieve precise control of the charging pile 3 and ensure its stable operation, the system incorporates multiple switches in its design. Switch S1 is installed between the AC power module 101 and the conversion module 2; switch S4 is installed between the solar charging module 102 and the conversion module 2; switch S2 is installed between the energy storage device 4 and the conversion module 2; and switch S3 is installed between the charging pile 3 and the conversion module 2. Figure 4 )

[0034] Preferred, refer to Figure 5A power control module 5 is installed on the communication and control path between the conversion module 2 and the charging pile 3. The energy storage device 4 contains not only a battery pack 401 but also a power monitoring unit 402 interconnected with the battery pack 401. The power control module 402 continuously monitors the output power of the solar charging module 102, the stability of the voltage and current of the AC module 101, and the power status of the energy storage device 4 (connected by dashed lines). In case of abnormalities (such as a decrease in the output power of the solar charging module, unstable voltage of the AC module, or low power of the energy storage device), the power control module 402 will quickly adjust the switching state, optimize the power distribution, and take protective measures to ensure the safe and stable operation of the system and provide a stable voltage to the charging pile 3 for charging electric vehicles. The energy storage device 4 can store electrical energy and serves as an auxiliary power source when the current input module 1 is supplying power normally, providing power support when needed.

[0035] Specifically, in combination Figure 4 and Figure 5 The working process of an integrated energy storage charging pile system is as follows:

[0036] First, the photosensor in the solar charging module 102 monitors the current light intensity and feeds the data back to the power control module 5 in real time. When there is sufficient sunlight during the day, the power control module 5 prioritizes access to the solar charging module 102. After control switches S4 and S3 are closed, the DC power generated by the solar panel is regulated by the DC-to-DC controller 202 and then directly supplied to the charging pile 3 to charge the electric vehicle. The power monitoring module 402 in the energy storage device 4 knows the power status of the battery pack 401. When the power of the energy storage device 4 is low, control switch S2 is closed to charge the excess power into the energy storage device 4 (battery pack) via the DC-to-DC controller 202 for later use. If the energy storage device 4 has sufficient power, the system disconnects switch S2 to avoid overcharging. When sunlight is insufficient, the output power of the solar charging module 102 is insufficient to maintain a stable voltage. Based on the charging station 3's usage status (requiring charging), the power control module 5 will quickly adjust the closing of switch S2, activating the energy storage device 4 to supplement the voltage. This ensures that the energy in the energy storage device 4, along with the energy in the solar charging module 102, provides a stable and suitable voltage to the charging station 3 via the DC-to-DC controller 202. Simultaneously, the power monitoring unit 402 monitors the battery pack 401 in the energy storage device in real time, ensuring it operates within a safe range and preventing over-discharge and over-charge.

[0037] As the sun sets or the light intensity gradually weakens, the photosensor in the solar charging module 102 will detect this change, or if the solar module 102 malfunctions, it will trigger the system to switch to the AC power module 101 power supply mode. That is, the power control module 5 quickly adjusts the switch, turning off switch S4, closing switch S1, and connecting to the AC power module 101 to switch to AC power module 101 power supply mode.

[0038] When power is needed for charging pile 3, switches S1 and S3 are closed. AC power module 101 converts AC power to DC power via AC-to-DC controller 201, providing a stable voltage for charging pile 3. When AC power module 101 (municipal power grid) is in peak condition or electricity prices are high, power control module 5 controls switch S2 to close, activating energy storage device 4 as an auxiliary power source. Together with AC power module 101, they supply power to charging pile 3 via conversion module 2.

[0039] When the charging pile 3 does not need to be powered, and the AC power module 101 is in a low-voltage state or the electricity price is low, the power monitoring unit 402 can know the power consumption status of the battery pack 401 in the energy storage device. When the battery pack 401 is in a low-power state, the switch S1 and switch S2 are closed (the switch S3 and switch S4 are open), so that the AC power module 101 can send current to the battery pack 402 of the energy storage device through the AC to DC controller 201 for backup.

[0040] When the user stops charging, the system will control the disconnect switch S3 to stop charging the charging pile 3 and disconnect it from the electric vehicle. Furthermore, when the battery pack 402 in the energy storage device has a high charge content, switch S2 will open, and the system will enter standby mode.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is 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 comprehensive energy storage charging pile system, comprising: The charging pile is characterized in that it is connected to an energy storage device and a current access module through a conversion module, wherein the current access module is at least one of an AC power module and a solar charging module.

2. The integrated energy storage charging pile system according to claim 1, characterized in that, When the current access module is an AC power module, a switch S1 is provided between the AC power module and the conversion module, and a switch S2 is provided between the conversion module and the energy storage module. The charging pile is controlled by controlling the opening and closing of the switches S1 and S2.

3. The integrated energy storage charging pile system according to claim 2, characterized in that, A switch S3 is provided between the charging pile and the conversion module. When the switch S3 is open, the switches S1 and S2 are closed to enable the AC power module to charge the energy storage device.

4. The integrated energy storage charging pile system according to claim 1, characterized in that, When the current access module is a solar charging module, a switch S1 is provided between the solar charging module and the conversion module, and a switch S2 is provided between the conversion module and the energy storage module. The charging pile is controlled by controlling the opening and closing of the switches S1 and S2.

5. The integrated energy storage charging pile system according to claim 4, characterized in that, A switch S3 is provided between the charging pile and the conversion module. When the switch S3 is open, the switches S1 and S2 are closed to enable the solar charging module to charge the energy storage device.

6. The integrated energy storage charging pile system according to claim 1, characterized in that, When the current access module includes both an AC power module and a solar charging module, a switch S1 is provided between the AC power module and the conversion module, a switch S4 is provided between the solar charging module and the conversion module, and a switch S2 is provided between the conversion module and the energy storage module. The charging pile is controlled by controlling the opening and closing of the switch S1 or the switch S4 and the switch S2.

7. The integrated energy storage charging pile system according to claim 6, characterized in that, A switch S3 is provided between the charging pile and the conversion device. When the switch S3 is open, the switch S1 or switch S4 and the switch S2 are closed to enable the AC power module or solar charging module to charge the energy storage device.

8. The integrated energy storage charging pile system according to any one of claims 1-7, characterized in that, It also includes a power control module, which is located on the communication and control path between the conversion module and the charging pile.

9. The integrated energy storage charging pile system according to any one of claims 1-7, characterized in that, The energy storage device includes interconnected battery packs and an energy monitoring unit.

10. The integrated energy storage charging pile system according to claim 1, characterized in that, The conversion module contains at least one of an AC to DC controller and a DC to DC controller.

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