문의하기
| 기술분야 | 전자/전기 |
|---|---|
| 개발상태 | Lab tested |
| 보유기관 | |
| 기술유형 | |
| 지식재산권 | IPR applied but not yet granted |
| 보유국가 | 독일 |
- 제품소개
Summary
독일의 한 대학이 전기차용 무변압 충전기의 전류 누설을 줄이는 방법을 개발했습니다. 이를 통해 누출 전류를 0에 근접하게 줄일 수 있는 것으로 입증되었습니다. 본 발명은 전지식 또는 플러그인 하이브리드를 불문하고 모든 배터리 기반 전기 자동차에 적용 가능합니다. 라이센스와 기술 협력 계약이 함께 제공됩니다.
Description
The number of electric vehicles that are being registered is increasing significantly each year. The efficient charging of the drive battery is a key technology for the continued success of electric vehicles on the market. In this context, attention has recently turned to transformerless on-board charger concepts. Given the known and considerable leakage capacitance of the battery and the connected high-voltage system, special care must be taken with transformerless chargers to ensure that high leakage current is not generated to ground and through the protective earth (PE) conductor.
The patent-pending invention from a German university uses a method that does without an additional compensation circuit for leakage current, instead using the charger’s inherent DC-DC (direct current) stage that connects its link to the battery (see figure). This DC-DC stage makes it possible to effectively compensate for low-frequency pulsating battery potentials and the resulting unwanted leakage current, such as those that occur particularly with transformerless on-board chargers for electric vehicles on various AC (alternating current) grids. This has been proven to reduce leakage current considerably, even to zero. All battery-based electric vehicles, whether all-electric or plug-in hybrid, could utilize this circuit in the future with a suitable control mechanism.
The German university offers interested companies the opportunity to license and continue to develop this technology with the inventors. The invention is directed to automobile manufacturers or their suppliers and to battery manufacturers who would like to make use of the technology.
Technology Keywords
001001004 - Electronic engineering
04001003 - Storage of electricity, batteries
02009016 - Charging system
02009026 - Energy supply system
02009002 - Hybrid and Electric Vehicles
Market Application Keywords
03002 - Batteries
09001005 - Motor vehicles, transportation equipment and parts
06008 - Energy Storage
Type and Role of Partner SoughtAll battery-based electric vehicles, whether all-electric or plug-in hybrid, could benefit from this circuit in the future with a suitable control mechanism. All major car manufacturersand charging component suppliers are currently working on efficient charging concepts for electric vehicles in order to reduce charging time and costs (in material and electrical operating losses) and to increase range by, e.g., reducing weight.The German university offers interested companies the opportunity to license and implement the technology in products and processes and to continue to develop this technology with theinventors.Together with the inventors from the university, the technology can be further developed to increase the Technology Readiness Level (TRL currently 3) or the technology can be adapted tothe product needs of the cooperation partner.Type of Partnership Considered
-Investment agreement
-Research and development cooperation agreement