IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0424371
(1995-08-16)
|
| 우선권정보 |
DE-4236286 (1992-10-28) |
| 국제출원번호 |
PCT/EP93/02976
(1993-10-27)
|
| §371/§102 date |
19950816
(19950816)
|
| 국제공개번호 |
WO-9410004
|
|
발명자
/ 주소 |
- Seelig Anton (Floersheim DEX)
|
| 출원인 / 주소 |
- Daimler-Benz Aktiengesellschaft (Stuttgart DEX 03)
|
| 인용정보 |
피인용 횟수 :
111 인용 특허 :
0 |
초록
▼
In a process for contactless energy transmission in charging the battery of a vehicle, in particular an electric car, by means of an inductive transmitter having a primary element (1) and a secondary element (2) which is attached to the vehicle, the secondary element (2) is made freely accessible an
In a process for contactless energy transmission in charging the battery of a vehicle, in particular an electric car, by means of an inductive transmitter having a primary element (1) and a secondary element (2) which is attached to the vehicle, the secondary element (2) is made freely accessible and the primary element is power driven to move in all three spatial coordinates within a predetermined spatial area. In this process the primary element (1) and the secondary element (2) are placed, under sensor control, in predetermined positions relative to each other and then electrical energy is transmitted in the medium frequency range by means of the inductive transmitter.
대표청구항
▼
A method of contactless energy transmission during charging of a battery of a vehicle using an inductive transmission arrangement which includes: a primary inductive element and a secondary inductive element, the secondary inductive element being disposed on the vehicle, the primary inductive elemen
A method of contactless energy transmission during charging of a battery of a vehicle using an inductive transmission arrangement which includes: a primary inductive element and a secondary inductive element, the secondary inductive element being disposed on the vehicle, the primary inductive element being movable with respect to the vehicle, the primary inductive element for moving into an approach position with respect to the secondary inductive element to achieve magnetic coupling with the secondary inductive element, and a charging device having an inverter for supplying the primary inductive element with a current having a frequency greater than about 20 kHz, wherein capacitors are provided which resonate with the inductance of the primary inductive element and the inductance of the secondary inductive element, there being a gap on the order of centimeters between the primary and secondary inductive elements, wherein a battery state detection and charging current control means is provided in the vehicle, wherein a means for contactless transmission of information is provided on the vehicle, the means for contactless transmission of information including a high frequency generator, a modulating apparatus, and a charging current deviation indicator, wherein there is a charging current setter associated with the inverter of the charging device, and wherein there is at least one electronic switch associated with the inventer, the method comprising: (a) measuring a battery charging current and determining a deviation of the measured battery charging current from a predetermined desired charging current value, with the battery state detection and charging current control means, the battery state detection and charging current control means including a battery state detection means a charging current controller, and a measurement controller; step (a) including (a-1) transmitting a desired value for a charging current from the battery state detection means to the charging current controller, (a-2) obtaining a measuring signal with the aid of the measurement converter, the measuring signal being proportional to the current induced in the secondary inductive element, and (a-3) supplying the measuring signal to the charging current controller, the charging current controller forming a charging current deviation signal from the desired value for a charging current and the measuring signal; (b) transmitting the determined charging current deviation, under control of the means for contactless transmission of information, to the charging current setter associated with the inverter of the charging device, step (b) including (b-1) supplying the charging current deviation signal to the charging current deviation indicator, and (b-2) using the charge current deviation indicator to connect the charging current deviation signal to the modulating apparatus, which in turn modulates a high frequency signal generated by the high frequency generator; (c) controlling switching time or switching frequency of the at least one electronic switch of the inverter supplying the current to the primary inductive element, so that the charging current deviation becomes zero; and (d) when the battery is charged, emitting a signal from the battery state detection means to indicate the battery is charged, the signal emitted by the battery state detection means switching the charging current deviation signal off at the modulating apparatus by resetting the charging current deviation indicator, and producing a charging end signal for transmission to the charging device and to the modulating apparatus to turn off the modulating apparatus.
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