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Direct current DC conversion test system and test method thereof

A test system and DC conversion technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of low production efficiency, load power consumption, long aging cycle, etc., to reduce test equipment, save investment costs, save the effect of time

Pending Publication Date: 2019-01-15
杭州比亚迪汽车有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When using the above method for performance testing or aging of the DC-DC module, the load consumes electric energy, resulting in energy loss and large cost waste
In addition, aging a DC-DC module requires a high-voltage DC source. To achieve simultaneous aging of multiple DC-DC modules, multiple high-voltage DC sources are required, and the cost is too high. If multiple DC sources are not used, the aging cycle will be too long. long, low productivity

Method used

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  • Direct current DC conversion test system and test method thereof
  • Direct current DC conversion test system and test method thereof

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Embodiment Construction

[0010] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0011] The DC conversion test system and its corresponding test method according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0012] figure 1 is a schematic flowchart of a test method for DC conversion according to another embodiment of the present invention. This method is used in the test system of direct current conversion DC-DC. The test system of DC-DC comprises the first high-voltage DC power supply, the second high-voltage DC power supply and 2N DC-DC ...

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Abstract

The invention discloses a direct current DC conversion test system and a test method thereof. The test system comprises a first high voltage direct current DC power supply, a second high voltage direct current DC power supply and 2N DC-DC modules; the 2N DC-DC modules are connected in parallel and then serially connected with the first high voltage DC power supply and the second high voltage DC power supply, wherein N is a positive integer; the test system is used for determining the performance of each DC-DC module according to a first performance parameter corresponding to each DC-DC module;the first performance parameter corresponding to each DC-DC module comprises performance parameters obtained by testing when the working mode of a first group of DC-DC module is set to be a boost constant current mode and the working mode of a second group of DC-DC module is set to be a voltage reduction constant current mode; the first group of DC-DC module comprises N DC-DC modules; the secondgroup of DC-DC module comprises the remaining N DC-DC modules. The direct current DC conversion test system and the test method thereof in the invention can achieve that a plurality of direct currentconversion modules carry out performance test at the same time, thereby saving time and required equipment.

Description

technical field [0001] The present application relates to the technical field of power electronics, in particular to a test system for DC conversion and a test method thereof. Background technique [0002] The direct current conversion (DC-DC) module is an important energy conversion module in industrial energy storage systems and vehicle charging and discharging systems. The performance of the DC-DC module directly affects the operation of loads or other modules in the system. The most direct way to test the performance of the DC-DC module is through the power aging test, which can expose some potential failure risks in advance and optimize the design, so as to ensure the reliability of the entire DC-DC module. At present, DC-DC aging tests are mostly realized by connecting DC-DC modules to high-voltage DC sources and loads. [0003] When the performance test or aging of the DC-DC module is performed using the above method, the load consumes electric energy, resulting in e...

Claims

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Application Information

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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 孙明珠尹韶文尹雪芹曹虎广红燕
Owner 杭州比亚迪汽车有限公司
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