Charger for low-cost centralized charging cabinet

Abstract

The utility model discloses a low-cost centralized charger for a charging cabinet, which comprises a charging cabinet main board, a plurality of charging cabinet control small boards, a charging conversion module, a plurality of change-over switches and a plurality of batteries, and is characterized in that the charging cabinet main board is electrically connected with the plurality of charging cabinet control small boards; each charging cabinet control small board is electrically connected with a corresponding battery through a change-over switch; and the charging conversion module is used for converting the input alternating current into direct current suitable for charging different batteries. According to the charger, the power factor correction unit and the direct current-direct current conversion unit are integrated, so that the electric energy conversion efficiency is effectively improved, input alternating current can be efficiently converted into direct current suitable for charging different batteries, and the electric energy loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of charging cabinets, specifically to a low-cost charger for centralized charging cabinets. Background Technology

[0002] In recent years, with the development of urban transportation, two-wheeled electric vehicles have been widely used as a short-distance transportation tool. Compared with traditional fuel-powered motorcycles, two-wheeled electric vehicles are not only more environmentally friendly, but also economical and easy to operate. Therefore, the market demand for two-wheeled electric vehicles has been increasing year by year. At the same time, with the continuous advancement of lithium battery technology, more and more two-wheeled electric vehicles are using lithium batteries as their main power source. Compared with traditional lead-acid batteries, lithium batteries are lighter and have a longer range, further enhancing the user experience of two-wheeled electric vehicles.

[0003] However, with the widespread use of lithium batteries, charging safety issues have gradually emerged. Because lithium batteries pose risks such as overheating and short circuits during charging, relevant regulations explicitly prohibit bringing lithium batteries into residential buildings for charging, aiming to reduce fire hazards caused by unsafe charging methods. To address this issue, centralized charging cabinets have appeared on the market, allowing users to remove their electric vehicle's lithium battery and place it in the cabinet for charging. These charging cabinets are generally located in public areas away from residential areas and are equipped with comprehensive fire-fighting facilities to address potential safety issues during charging.

[0004] Existing centralized charging cabinets generally use AC power outlets, requiring users to bring their own chargers. This method is not only inconvenient but also poses a significant fire risk when multiple electric vehicles are charging together. If one vehicle catches fire, it could quickly spread to surrounding vehicles, causing greater property damage. To improve the safety and convenience of centralized charging cabinets while reducing their construction costs, the market urgently needs a new solution. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides a low-cost charger for centralized charging cabinets that is compatible with lithium batteries of different voltage levels while ensuring safety, and reduces equipment costs, effectively overcoming the shortcomings of existing technologies.

[0006] This utility model is achieved through the following technical solution: a low-cost centralized charging cabinet charger, including a charging cabinet main board, multiple charging cabinet control boards, a charging conversion module, multiple switching switches and multiple batteries. The charging cabinet main board is electrically connected to the multiple charging cabinet control boards, and each charging cabinet control board is electrically connected to the corresponding battery through a switching switch.

[0007] The charging conversion module is used to convert the input AC power into DC power suitable for charging different batteries.

[0008] The charging cabinet control board controls the charging process of each battery through a switching switch, and monitors and provides feedback on the charging status of each battery in real time through a communication module.

[0009] As a preferred technical solution, the charging conversion module includes a PFC unit and a DC-DC / DC unit.

[0010] As a preferred technical solution, the PFC unit is used to rectify the input AC power and perform power factor correction, converting the AC power into DC power.

[0011] As a preferred technical solution, the DC / DC unit is used to convert the DC power output by the PFC unit into a voltage level suitable for charging different batteries.

[0012] As a preferred technical solution, the charging conversion module is compatible with lithium batteries of three voltage levels: 48V, 60V, and 72V.

[0013] As a preferred technical solution, the charging cabinet control board has a communication function, which is used to communicate with the charging cabinet main board in real time to monitor and control the charging status of each battery.

[0014] The beneficial effects of this utility model are: the charger of this utility model effectively improves the power conversion efficiency by integrating a power factor correction unit and a DC-DC conversion unit, and can efficiently convert the input AC power into DC power suitable for charging different batteries, thereby reducing power loss.

[0015] Meanwhile, the charging conversion module is compatible with three mainstream voltage levels of lithium batteries: 48V, 60V, and 72V, which greatly improves the applicability of the charger and can be adapted to lithium batteries of different brands and models of two-wheeled electric vehicles on the market.

[0016] In addition, the charging cabinet control board and the main board exchange data in real time through a communication module, which can effectively monitor the charging status of each battery, prevent overcharging, short circuit and other safety hazards, and further improve the safety of the charging process.

[0017] Compared to traditional charging stations that require vehicle owners to bring their own chargers, this utility model's centralized charging solution significantly reduces usage costs and operational complexity. Users only need to place the battery in the charging cabinet to complete the charging process. Due to the adoption of a centralized charging conversion module, this utility model reduces the need for configuring an independent charger for each charging port, thereby effectively reducing the overall equipment construction cost.

[0018] In addition, the system uses a high-performance electronic switching switch to achieve rapid switching of charging paths, further improving charging efficiency and safety. This charger not only has excellent cost performance, but also provides a reliable guarantee for the popularization and safe charging of two-wheeled electric vehicles, and has broad market application prospects. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a system block diagram of the present invention. Detailed Implementation

[0021] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0022] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0023] like Figure 1 As shown, this utility model consists of a charging cabinet main board, multiple charging cabinet control boards, a charging conversion module, multiple switching switches, and multiple batteries. The charging cabinet main board is electrically connected to the multiple charging cabinet control boards, enabling unified management and control of each control board. Each charging cabinet control board is connected to a corresponding battery via a corresponding switching switch, allowing selective charging of individual batteries as needed.

[0024] The main function of the charging conversion module is to convert the input AC power into DC power suitable for different batteries, ensuring charging stability and safety. Specifically, the charging conversion module rectifies and transforms the AC power to convert it into a voltage output that meets the battery's requirements. To achieve this function, the charging conversion module internally incorporates a power factor correction (PFC) unit and a DC / DC conversion unit. The PFC unit's main function is to rectify the input AC power and, through power factor correction technology, make the phase between the AC power and the load more consistent, reducing harmonic distortion and thus improving power efficiency. After the PFC unit rectifies the input AC power, it generates DC power, which is then further voltage-converted by the DC / DC unit to output a voltage level suitable for charging different batteries.

[0025] The function of the DC / DC unit is to convert the DC power output from the PFC unit into a voltage level suitable for charging different batteries, ensuring that batteries of different specifications and models can be charged smoothly. Specifically, the charging conversion module is compatible with three common lithium battery voltage levels: 48V, 60V, and 72V. Therefore, it can provide charging services for mainstream two-wheeled electric vehicle lithium batteries on the market, thus allowing the charging cabinet to adapt to more types of batteries and expanding its applicability.

[0026] During charging, the charging cabinet control board is responsible for controlling the charging process with the batteries. Connected to a switch, the control board can open and close the charging channels based on the battery's charging status. This allows for independent control of each battery, ensuring both safety and efficiency in the charging process.

[0027] To ensure real-time monitoring of the charging status, the charging cabinet control board is also equipped with communication capabilities. The control board can interact with the mainboard of the charging cabinet via a communication module, providing real-time feedback on the charging status of each battery, including battery voltage, current, and temperature. Upon receiving this information, the mainboard can adjust the charging strategy as needed, further ensuring the safety and stability of the charging process.

[0028] Furthermore, in actual use, users can remove the lithium battery from the two-wheeled electric vehicle and place it directly into the charging cabinet for charging. The system automatically matches the appropriate charging voltage by detecting the battery's voltage level and monitors the entire charging process.

[0029] When the battery is fully charged, the charging cabinet control board can promptly shut off the corresponding switching switch to prevent overcharging. This not only improves the convenience of charging but also effectively reduces the construction and maintenance costs of centralized charging cabinets.

[0030] The charger of this utility model effectively improves the power conversion efficiency by integrating a power factor correction unit and a DC-DC conversion unit. It can efficiently convert the input AC power into DC power suitable for charging different batteries and reduce power loss.

[0031] Meanwhile, the charging conversion module is compatible with three mainstream voltage levels of lithium batteries: 48V, 60V, and 72V, which greatly improves the applicability of the charger and can be adapted to lithium batteries of different brands and models of two-wheeled electric vehicles on the market.

[0032] In addition, the charging cabinet control board and the main board exchange data in real time through a communication module, which can effectively monitor the charging status of each battery, prevent overcharging, short circuit and other safety hazards, and further improve the safety of the charging process.

[0033] Compared to traditional charging stations that require vehicle owners to bring their own chargers, this utility model's centralized charging solution significantly reduces usage costs and operational complexity. Users only need to place the battery in the charging cabinet to complete the charging process. Due to the adoption of a centralized charging conversion module, this utility model reduces the need for configuring an independent charger for each charging port, thereby effectively reducing the overall equipment construction cost.

[0034] In addition, the system uses a high-performance electronic switching switch to achieve rapid switching of charging paths, further improving charging efficiency and safety. This charger not only has excellent cost performance, but also provides a reliable guarantee for the popularization and safe charging of two-wheeled electric vehicles, and has broad market application prospects.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A low-cost charger for a centralized charging cabinet, characterized in that: It includes a charging cabinet main board, multiple charging cabinet control boards, a charging conversion module, multiple switching switches, and multiple batteries. The charging cabinet main board is electrically connected to the multiple charging cabinet control boards, and each charging cabinet control board is electrically connected to the corresponding battery through a switching switch. The charging conversion module is used to convert the input AC power into DC power suitable for charging different batteries. The charging cabinet control board controls the charging process of each battery through a switching switch, and monitors and provides feedback on the charging status of each battery in real time through a communication module. The charging conversion module includes a PFC unit and a DC-DC / DC unit. The PFC unit rectifies and performs power factor correction on the input AC power, converting it into DC power. The DC / DC unit converts the DC power output from the PFC unit into a voltage level suitable for charging different batteries. The charging conversion module is compatible with lithium batteries of three voltage levels: 48V, 60V, and 72V. The charging cabinet control board has communication capabilities, allowing it to communicate with the charging cabinet mainboard in real time to monitor and control the charging status of each battery.

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