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Electric vehicle charging circuit and electric vehicle

A charging circuit, a technology for electric vehicles, applied in electric vehicle charging technology, charging and maintenance charging/discharging, electric vehicles, etc., can solve problems such as safety accidents, increase in volume, and the second DC source, namely low-voltage battery power loss, etc. Low cost and small size

Active Publication Date: 2022-02-08
HANGZHOU EV TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the vehicle-mounted DC / DC converter fails, it will cause the second DC source, namely the low-voltage battery, to lose power, which may lead to serious safety accidents
Adding an on-board DC / DC converter will lead to more electric vehicle parts and larger volume

Method used

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  • Electric vehicle charging circuit and electric vehicle
  • Electric vehicle charging circuit and electric vehicle
  • Electric vehicle charging circuit and electric vehicle

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0022] It should be understood that the terms "first", "second" and the like in the claims, specification and drawings of the present application are used to distinguish different objects, rather than to describe a specific order. The terms "comprising" and "comprises" used in the specification and claims of this application indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or more other features, intege...

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Abstract

This application provides an electric vehicle charging circuit and an electric vehicle. The electric vehicle charging circuit can realize the normal power supply of the low-voltage battery after the first DC / DC converter for charging the low-voltage battery unit fails by adding a second secondary side circuit of a backup transformer and a second secondary side winding of the transformer , so that the battery charging circuit has a redundant function, and the cost is low and the size is small.

Description

technical field [0001] The present application relates to the technical field of electric vehicles, and in particular to electric vehicle charging circuits and electric vehicles. Background technique [0002] Electric vehicles, with their outstanding features of high efficiency, energy saving, low noise and zero emission, have incomparable advantages in energy saving and environmental protection. In recent years, major progress has been made in core key technologies such as power batteries, motors, control systems, and on-board chargers for electric vehicles around the world in recent years. Product safety, reliability, and service life have been significantly improved, and costs have been controlled to a certain extent. Automobiles and pure electric vehicles are gradually entering the stage of practicalization and small industrialization, and electric vehicles will become the strategic direction of the development of the world's automobile industry. [0003] Electric vehic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J9/06H02M3/335H02M1/44B60L53/00B60L53/22
CPCH02J7/0069H02J7/00047H02J7/0036H02J9/06H02M3/33576H02M1/44B60L53/00B60L53/22Y02T10/70Y02T10/72Y02T10/92Y02T10/7072Y02T90/14Y04S20/20Y02B70/30
Inventor 平定钢
Owner HANGZHOU EV TECH CO LTD
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