Wide voltage range portable direct current charging pile

Abstract

The utility model discloses a portable direct current charging pile of wide voltage range, including power input, be used for connecting ac power supply to provide input power, rectification and voltage conversion module, including with the power input link's PFC circuit, the PFC circuit is used to convert alternating current into stable direct current, at least one with PFC circuit connection's DCDC converter, the utility model provides a low -power portable direct current charging pile, through domestic socket power supply, need not circuit modification, the user is convenient in family or remote area emergency use. The charging pile is small, light in weight, easy to carry, has the wide voltage output of 200V to 1000V, is suitable for most new energy electric vehicles. The equipment still has multistage voltage regulation and overcurrent protection function, ensures charging safety and stability, solves the "mileage anxiety" problem of electric vehicle, has extensive market prospect and application value.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of charging pile, concretely relates to a wide voltage range portable direct current charging pile. BACKGROUND

[0002] With the increasing demand for energy saving and environmental protection around the world, the technology development and market share of new energy electric vehicles are rising year by year. In order to alleviate the "mileage anxiety" of electric vehicle owners, that is, the concern that the vehicle cannot continue to run due to battery power depletion during driving, the construction of charging piles becomes the key.

[0003] However, most of the existing charging piles are fixed charging piles, and the owner must go to the designated place to charge. This fixed charging method has some limitations, especially when the owner is in a remote area or an area with fewer charging piles, he or she may face the situation of not being able to charge in time. In addition, there is sometimes a queue for using the charging pile, especially during holidays or peak hours, which further increases the inconvenience of charging.

[0004] For ordinary household users, the cost of installing a fixed direct current charging pile is high, and the household circuit needs to be modified. In order to meet the outdoor charging needs of new energy vehicle owners and avoid the high cost and inconvenience of fixed charging facilities, it is an urgent technical problem to design a portable charging pile that can be charged through a common household socket. SUMMARY

[0005] In order to solve the above problems, the utility model provides a wide voltage range portable direct current charging pile, which is small in size, light in weight, wide in output voltage range and can adapt to household socket.

[0006] The utility model is realized through the following technical schemes: a wide voltage range portable direct current charging pile, comprising:

[0007] A power input end is used to connect an AC power supply to provide input power;

[0008] A rectification and voltage conversion module includes a PFC circuit connected to the power input end, and the PFC circuit is used to convert AC power into stable DC power;

[0009] At least one DC / DC converter connected to the PFC circuit is used to further increase or decrease the DC voltage output from the PFC circuit;

[0010] A switching switch connected to the output end of the DC / DC converter is used to control the output voltage;

[0011] A direct current charging gun connected to the switching switch.

[0012] As a preferred technical solution, the DC / DC converter is two, respectively for lifting or reducing the DC voltage.

[0013] As a preferred technical solution, a current protection device is connected between the DC charging gun and the switch.

[0014] As a preferred technical solution, the charging gun is configured to provide a DC output voltage of 200V to 1000V, suitable for charging various new energy electric vehicles.

[0015] As a preferred technical solution, the power input end adopts a three-hole AC plug for connecting an external power source.

[0016] As a preferred technical solution, a status indicator light is further included for displaying the working state of the charging pile.

[0017] The beneficial effects of the utility model are: the utility model discloses a low-power DC charging pile, which can be directly powered by a common household socket without modifying the circuit, greatly facilitating the use of users in a home environment.

[0018] Secondly, the portable design makes the charging pile small in size, light in weight, easy to carry and store, and the owner can place it in the trunk of the vehicle to meet the emergency charging needs in outdoor or remote areas.

[0019] In addition, the portable DC charging pile has a wide output voltage range, which can adapt to a DC voltage output of 200V to 1000V, almost covering all mainstream new energy electric vehicle models on the market, greatly improving the applicability. At the same time, the device adopts multi-stage voltage regulation and overcurrent protection design to ensure the safety and stability of the charging process, effectively avoiding overcurrent, overvoltage and other faults.

[0020] Therefore, the portable DC charging pile of the utility model not only solves the "range anxiety" problem of new energy electric vehicle owners, especially in areas without fixed charging piles, but also avoids the waste of resources caused by blind construction of charging infrastructure, and has wide market prospects and application value. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0022] Figure 1 A system block diagram of the present application. DETAILED DESCRIPTION

[0023] All features disclosed in this specification, and / or all steps of any methods or processes disclosed in this specification, can be combined in any combination, except combinations where at least some of the features and / or steps are mutually exclusive.

[0024] Any feature in the present specification, including any accompanying claims, abstract and drawings can be claimed as an alternative to any other feature or claim, unless the context clearly dictates otherwise.

[0025] As Figure 1 The utility model provides a kind of portable DC charging pile of wide voltage range, the structure of the charging pile is simple, convenient to carry, it is applicable to the charging of a variety of new energy electric vehicles.The charging pile includes a power input terminal, for connecting external ac power supply, to provide input power.In the implementation of the utility model, the power input terminal preferably adopts standard three-hole ac plug, can be conveniently connected with household power socket or other common ac power supply, without modifying existing power system, convenient to use.

[0026] Rectification and voltage conversion module is connected with the power input terminal, is responsible for the rectification and voltage conversion of alternating current obtained from power input terminal.Rectification and voltage conversion module includes a power factor correction (PFC) circuit, the PFC circuit is used to convert input alternating current into direct current stably, ensure the consistency of current waveform and voltage waveform, improve the utilization efficiency of input electric energy, and provide stable direct current power for subsequent voltage conversion.On this basis, at least one DC / DC converter is connected with PFC circuit, for further boosting or reducing direct current voltage, to meet the charging needs of different electric vehicles.In preferred technical solutions, the DC / DC converter is two, is used to boost or reduce direct current voltage respectively, to realize more extensive voltage adaptation range, so that charging pile can adapt to most new energy electric vehicles on the market.

[0027] Connected with DC / DC converter output terminal is a switching switch, switching switch is used to control the switching of output voltage, so as to adjust output voltage according to the specific needs of electric vehicle, ensure the flexibility and reliability of charging.To further improve charging safety, a current protection device is connected between the direct current charging gun and switching switch, the current protection device is used to detect and prevent the occurrence of overcurrent during charging, to avoid damage to electric vehicle battery or charging pile itself due to excessive current.

[0028] The direct current charging gun as an output end is connected with the switch. The charging gun is responsible for transmitting the adjusted direct current to the electric vehicle battery. In the preferred embodiment of the utility model, the direct current charging gun can provide a wide range of direct current output voltage of 200V to 1000V, which is almost suitable for all new energy electric vehicles on the market, and has strong versatility. By configuring different charging modes, users can select appropriate charging schemes according to the actual voltage requirements of electric vehicles.

[0029] In order to improve the user experience, the utility model further includes a state indicating lamp, which is arranged on the shell of the charging pile and is used for indicating the working state of the charging pile. Users can intuitively understand whether the charging pile is working, whether it is in standby state or whether there is a fault through the different colors or flashing modes of the state indicating lamp, so as to facilitate timely corresponding operation and ensure the smooth progress of the charging process.

[0030] The portable direct current charging pile of the utility model is compact in design and easy to operate. The ordinary three-hole AC plug can realize convenient power connection, and the charging pile is small in size and convenient for users to place in the trunk for future use. The charging pile is not only suitable for daily use, but also can provide emergency charging service when the electric vehicle owner goes to remote areas or areas with insufficient charging piles, further solving the "mileage anxiety" problem of electric vehicle users, and having great practical value and market prospect.

[0031] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this. Any changes or replacements without creative labor should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be limited by the protection scope defined in the claims.

Claims

1. A portable DC charging station with a wide voltage range, characterized in that, include: The power input terminal is used to connect to an AC power source to provide input power. The rectification and voltage conversion module includes a PFC circuit connected to the power input terminal, the PFC circuit being used to convert AC power into stable DC power; At least one DC / DC converter connected to the PFC circuit is used to further boost or reduce the DC voltage output from the PFC circuit; A switching device connected to the output terminal of the DC / DC converter, the switching device being used to control the output voltage; A DC charging gun connected to the switching switch.

2. The wide voltage range portable DC charging station according to claim 1, characterized in that: There are two DC / DC converters, one for boosting or reducing DC voltage.

3. The wide voltage range portable DC charging station according to claim 1, characterized in that: A current protection device is connected between the DC charging gun and the switching switch.

4. The wide voltage range portable DC charging station according to claim 1, characterized in that: The charging gun is configured to provide a DC output voltage of 200V to 1000V, suitable for charging various new energy electric vehicles.

5. The wide voltage range portable DC charging station according to claim 1, characterized in that: The power input terminal uses a three-prong AC plug, which is used to connect to an external power source.

6. The wide voltage range portable DC charging station according to claim 1, characterized in that: It also includes a status indicator light to show the working status of the charging station.

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