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Non-isolated charging and discharging system for bidirectional flow of energy

A two-way flow, non-isolated technology, used in electric vehicle charging technology, information technology support systems, current collectors, etc., can solve the problems of single application, one-way charging module, etc., to achieve the effect of small size, smooth voltage and low cost

Pending Publication Date: 2019-01-01
珠海泰通电气技术有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] However, the existing charging modules are basically one-way, that is, only the power grid can flow to the car battery to charge the battery, and the application is relatively single

Method used

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  • Non-isolated charging and discharging system for bidirectional flow of energy
  • Non-isolated charging and discharging system for bidirectional flow of energy

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not limited to the present invention.

[0016] see figure 1 , a non-isolated charging and discharging system with two-way energy flow in the present invention includes a smart grid 1, a non-isolated charging and discharging device 2 and an energy storage unit 3, and the non-isolated charging and discharging device 3 is used to control the output of the smart grid 2 to the energy storage unit 3 Electric energy, or control the energy storage unit 3 to output electric energy to the smart grid 1 . Wherein, the energy storage unit 3 may be an electric vehicle battery or an energy storage battery and capacitor.

[0017] Such as figure 2 ...

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Abstract

The invention discloses a non-isolated charging and discharging system with the bidirectional flow of energy, and the system comprises a smart grid, a non-isolated charging and discharging device andan energy storage unit, wherein the non-isolated charging and discharging device is used for controlling the smart grid to output electric energy to the energy storage unit, or controlling the energystorage unit to output electrical energy to the smart grid. The non-isolated charging and discharging device includes a first filter circuit, an H-bridge inverter circuit, a DC circuit, a half-bridgeIGBT module, and a second filter circuit. The non-isolated charging and discharging system of the invention can be applied to electric vehicle charging and smart grid energy storage, uses fewer components, has a wide output voltage range, can realize non-isolated bidirectional energy flow of a power source, and can effectively maximize the power utilization rate.

Description

【Technical field】 [0001] The invention relates to the technical field of electric vehicles, in particular to a non-isolated charging and discharging system with bidirectional energy flow. 【Background technique】 [0002] In various applications such as new energy photovoltaic systems, energy storage systems, and electric vehicle charging systems, it is required that the energy in the power converter can flow in both directions, and the energy can flow from the grid to the energy storage unit such as the battery to realize the storage of electric energy. At the same time, It is also required that energy can flow from the energy storage unit to the grid or be output in the form of AC power alone, so as to realize the regulation of grid power or meet the use of power under off-grid conditions. [0003] However, the existing charging modules are basically one-way, that is, only the grid can flow to the car battery to charge the battery, and the application is relatively single. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/04H02M1/12H02M1/14
CPCH02J7/045H02M1/126H02M1/14Y02T90/167Y04S30/12
Inventor 吴亚杰
Owner 珠海泰通电气技术有限公司
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