Low-frequency charging circuit capable of automatically switching dual voltage inputs and charging device
A charging circuit and automatic switching technology, which is applied to battery circuit devices, DC power input conversion to DC power output, electric vehicles, etc., to achieve strong compatibility
Pending Publication Date: 2019-12-20
SHANGHAI POWER STATION
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Problems solved by technology
[0004] The invention provides a low-frequency charging circuit and charging equipment with dual-voltage input automatic switching to solve the problem of only being able to adapt to one mains voltage
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[0085] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0086] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or...
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The invention provides a low-frequency charging circuit capable of automatically switching dual voltage inputs and a charging device. The low-frequency charging circuit comprises: an input control module, a low-frequency transformer, an input sampling module, and a main control module, wherein the low-frequency transformer includes a primary coil and a secondary coil; at least three nodes are disposed in the primary coil and include a first node, a second node, and a third node; the second node is located between the first node and the third node; the secondary coil of the low-frequency transformer is configured to power a connected battery; the first input end of the input control module is intended to be connected to the live wire; the second input end of the input control module is intended to be connected to the neutral line; the first output end of the input control module is connected to the first node; the second output end of the input control module is connected to the secondnode; the third output end of the input control module is connected to the third node; the first input end is electrically connected to the first output end; and the input sampling module is intendedto be connected to the live wire and the neutral line to sample an input voltage between the live wire and the neutral line.
Description
technical field [0001] The invention relates to charging equipment for storage batteries, in particular to a low-frequency charging circuit and charging equipment with dual-voltage input automatic switching. Background technique [0002] A storage battery is a device that directly converts chemical energy into electrical energy. Its working principle is usually: when charging, use external electrical energy to regenerate internal active substances, store electrical energy as chemical energy, and regenerate chemical energy when it needs to be discharged. Converted to electrical energy output. [0003] In the existing related technology, the input of the battery charging circuit is mainly a circuit composed of a single transformer winding, which is relatively simple. The input of the traditional charging circuit is generally in a narrow voltage range, which is not suitable for use in multiple countries. The circuit can only adapt to one kind of mains voltage, and different vo...
Claims
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IPC IPC(8): H02J7/00H02J9/06H02M3/335
CPCH02J7/0036H02J7/0045H02J9/061H02M3/33523Y04S20/20Y02B70/30
Inventor 叶远军王业占洪桂明刘洋洋
Owner SHANGHAI POWER STATION