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Rail vehicle charging device and charging control method

A charging device and rail vehicle technology, applied in circuit devices, battery circuit devices, vehicle components, etc., can solve problems such as losses, meet the requirements of lowering the withstand voltage level, avoid loss of efficiency, and ensure the effect of stability

Active Publication Date: 2020-04-28
CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the technical problem that the existing rail vehicle charging device can not only ensure the low cost of the device, but also avoid the loss of efficiency, the invention proposes a rail vehicle charging device that can not only realize the low cost of the device, but also avoid the loss of efficiency device, and a charging control method applied to the rail vehicle charging device

Method used

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  • Rail vehicle charging device and charging control method
  • Rail vehicle charging device and charging control method
  • Rail vehicle charging device and charging control method

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Embodiment Construction

[0028]In the following, the present invention will be specifically described through exemplary embodiments. It should be understood, however, that elements, structures and characteristics of one embodiment may be beneficially incorporated in other embodiments without further recitation.

[0029] In the description of the present invention, it should be noted that the terms "first" and "second" are used for description purposes only, and should not be understood as indicating or implying relative importance.

[0030] see image 3 with Figure 4 , a rail vehicle charging device, including a first DC / DC module 1 and a second DC / DC module 2 that can convert a power supply voltage signal into a voltage signal required for charging, and the power input of the first DC / DC module 1 The terminals include a first positive input terminal 101 and a first negative input terminal 102, the power output terminal of the first DC / DC module 1 includes a first positive output terminal 103 and a...

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Abstract

The invention provides a rail vehicle charging device and a charging control method. The rail vehicle charging device comprises a first DC / DC module and a second DC / DC module, wherein the first DC / DC module and the second DC / DC module can be used for converting a power voltage signal to a voltage signal required for charging, the first DC / DC module comprises a first insulated gate bipolar transistor (IGBT) unit and a first transformer, the second DC / DC module comprises a second IGBT unit and a second transformer, circuits of the first IGBT unit and the second IGBT unit are both bridge circuits, a first negative input end is connected with a second positive input end, a first positive output end is connected with a second positive output end, and a first negative output end is connected with a second negative output end. By the rail vehicle charging device, low cost of the device can be achieved, and efficiency loss can also be prevented.

Description

technical field [0001] The invention belongs to the technical field of rail vehicle charging, and in particular relates to a rail vehicle charging device and a charging control method. Background technique [0002] The input voltage of the rail vehicle charging device is generally DC750V or DC1500V, and its main circuit topology generally has two types: [0003] Such as figure 1 As shown, one is the main circuit topology charger using direct DC / DC conversion. In order to ensure a safety margin, generally when selecting the IGBT of the main circuit, the IGBT selected by the DC750V voltage level charger is a voltage-resistant DC1700V level Yes, the IGBT selected by the DC1500V voltage level charger is the withstand voltage of DC3300V level. However, the higher the withstand voltage performance of the IGBT, the higher the cost of the IGBT, and the greater the internal conduction resistance of the IGBT. It causes the conduction loss of IGBT to increase, which in turn leads to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/04H02M3/335
CPCH02J7/045H02M3/33569
Inventor 韩冰朱友远迟久鸣李海洋张云龙沙琮田时军伟林鹏
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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