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DCDC converter, vehicle-mounted charging device, vehicle-mounted charging system and vehicle

A technology of on-board charging and on-board charger, which is applied in the field of vehicles, on-board charging devices, and DCDC converters, can solve the problems of high cost and large volume of on-board chargers, improve power density and safety, and save pre-charging Road, the effect of cost reduction

Pending Publication Date: 2020-07-31
HANGZHOU EV TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, such an additional pre-charging circuit ensures the safety of the circuit, but causes problems such as large volume and high cost of the on-board charger.

Method used

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  • DCDC converter, vehicle-mounted charging device, vehicle-mounted charging system and vehicle
  • DCDC converter, vehicle-mounted charging device, vehicle-mounted charging system and vehicle
  • DCDC converter, vehicle-mounted charging device, vehicle-mounted charging system and vehicle

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Embodiment Construction

[0048]In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them.

[0049] figure 1 A schematic structural diagram of a DCDC converter provided for an embodiment of the present application, as shown in figure 1 As shown, the DCDC converter 100 can be a high-power DCDC converter, which can include: a first DC power supply terminal 140, a main transformer 130, a first circuit 110 located on the secondary side of the main transformer 130, and a first circuit 110 located on the secondary side of the main transformer 130. The second circuit 120 and the second DC power supply terminal 150 on the primary side.

[0050] Wher...

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PUM

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Abstract

The invention provides a DCDC converter, a vehicle-mounted charging device, a vehicle-mounted charging system and a vehicle, and relates to the technical field of vehicle-mounted charging. The DCDC converter comprises a first direct-current power supply end, a main transformer, a first part circuit located on the secondary side of the main transformer, a second part circuit located on the primaryside of the main transformer and a second direct-current power supply end. The first direct-current power supply end is used for being connected with a low-voltage battery of the vehicle-mounted charging system, and the second direct-current power supply end is used for being connected with a vehicle-mounted charger of the vehicle-mounted charging system. Compared with the prior art, a pre-charging circuit of the OBC and the high-voltage battery side can be omitted, so that the power density and the safety of the OBC are improved, and the cost of the OBC and the whole vehicle is reduced.

Description

technical field [0001] The present application relates to the technical field of vehicle charging, and in particular, relates to a DCDC converter, a vehicle charging device, a system and a vehicle. Background technique [0002] During the charging process of the on-board charging device, if the charging voltage is too high, the charging current will be very large, which may damage the busbar and capacitor. Therefore, in the prior art, in order to limit the charging current, a pre-charging process is usually added to the on-board charging device. So as to achieve the purpose of protecting the circuit. [0003] Since there is an electrolytic capacitor with a large value on the bus of the on-board charger (OBC), which is used to realize the function of voltage stabilization, the traditional pre-charging circuit usually pre-charges the bus capacitor before the on-board charger starts. Charging, thereby suppressing the input pulse current, wherein, the pre-charging circuit is co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/28H02M3/335H02M1/42B60L53/20
CPCH02M3/28H02M3/33576H02M3/33584H02M1/4233H02M1/4258B60L53/20Y02T10/70Y02T10/7072Y02T90/14Y02T10/72
Inventor 李文渝平定钢
Owner HANGZHOU EV TECH CO LTD