EP1806281A1 - Méthode de régulation d'un moteur électrique pour bateau - Google Patents
Méthode de régulation d'un moteur électrique pour bateau Download PDFInfo
- Publication number
- EP1806281A1 EP1806281A1 EP06003968A EP06003968A EP1806281A1 EP 1806281 A1 EP1806281 A1 EP 1806281A1 EP 06003968 A EP06003968 A EP 06003968A EP 06003968 A EP06003968 A EP 06003968A EP 1806281 A1 EP1806281 A1 EP 1806281A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- battery
- voltage
- current
- boat
- maximum current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
- B63H20/007—Trolling propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
Definitions
- the invention relates to a method for controlling an electric boat engine, which is powered by a battery with power, wherein at most a maximum current is withdrawn from the battery.
- batteries are comparatively large and heavy, so that only a limited number of batteries can be accommodated on the boat. Accordingly, the range of an electrically powered boat is limited by the capacity of the battery.
- the remaining capacity of the battery should always be so great that the boat still reaches a safe point of contact, for example a harbor, and does not drive maneuverable on the water.
- Object of the present invention is therefore to show a method for controlling an electric boat engine, which allows for a given residual capacity of the battery increased residual range of the boat.
- This object is achieved by a method of the type mentioned above, wherein the battery voltage is measured and the maximum current is reduced when the battery voltage falls below a threshold voltage.
- the invention is based on the recognition that the battery voltage can be used as an indicator of the residual capacity. It has been determined that the battery voltage depends on the one hand on the state of charge of the battery, on the other hand from the current drain. After the charging process, the battery voltage has a maximum value, hereinafter referred to as LadeendLite. As the battery discharges, the battery voltage slowly drops until the voltage collapses. The battery voltage is also dependent on the current drain. The larger the current drawn by the battery, the lower the battery voltage.
- This dual dependence of the battery voltage on the state of charge of the battery on the one hand, from the current drain on the other hand, is used according to the invention to increase the remaining range of an electric motor boat, the electric motor is powered by a battery.
- the battery voltage is measured and compared with a predetermined value, hereinafter referred to as the limit voltage. If the current battery voltage falls below the limit voltage, this is an indicator of a low residual capacity of the battery. According to the invention, the electric motor is switched to a more economical driving style in this case.
- the maximum current drawn from the battery is limited to a maximum current which is lower than the maximum previously drawn from the battery power.
- the maximum current is again reduced when the limit voltage is undershot again. This can be done several times, so that the electric motor is gradually switched to an ever slower and more economical driving.
- the inventive method is particularly suitable for controlling electric boat engines that are powered by high-current batteries, especially lithium batteries, most preferably by a lithium-manganese battery.
- batteries such as lithium manganese batteries
- batteries are irreversibly damaged if the battery voltage falls below a minimum value. It is therefore advantageous, when falling below a predetermined minimum voltage, to completely interrupt the flow of current from the battery, that is, in particular to switch off the electric boat engine.
- the minimum voltage is chosen so large that no damage to the battery occur.
- the lithium-manganese battery is used to power a boat electric motor, in particular for supplying an electronically commutated synchronous motor.
- the battery After charging, the battery has a final charge voltage of 4.2 V.
- the rated voltage of the lithium-manganese cells is 3.7 V.
- the boat engine is initially operated with a charged battery with a maximum current of 1 C, that is, with a battery capacity of for example, 100 Ah, at most a current of 100 A is subtracted.
- the battery voltage is constantly monitored during engine operation. If the battery voltage falls below a predetermined threshold voltage of 3.0 V, this is an indication that the capacity of the battery will be exhausted in the near future with a constant high current drain. According to the invention, therefore, at this point A, the maximum current to be taken from the battery is limited to 0.1 ° C. This means that the electric motor is switched to a slower but more economical drive.
- the engine will be switched off for safety reasons to avoid complete discharge and damage to the batteries.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/619,382 US20070152626A1 (en) | 2006-01-05 | 2007-01-03 | Method for Regulating an Electric Boat Motor |
EP07000146A EP1806282A3 (fr) | 2006-01-05 | 2007-01-04 | Méthode de contrôle pour moteur électrique de bateaux |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006001009 | 2006-01-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1806281A1 true EP1806281A1 (fr) | 2007-07-11 |
Family
ID=36406015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06003968A Withdrawn EP1806281A1 (fr) | 2006-01-05 | 2006-02-27 | Méthode de régulation d'un moteur électrique pour bateau |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1806281A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2498366A4 (fr) * | 2009-11-06 | 2015-05-06 | Panasonic Ip Man Co Ltd | Réseau de distribution d'énergie |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10257605A (ja) * | 1997-03-12 | 1998-09-25 | Isuzu Motors Ltd | 電気自動車制御装置 |
JPH11164488A (ja) * | 1997-11-26 | 1999-06-18 | Yamaha Motor Co Ltd | 電動車両のバッテリ充放電管理装置 |
JP2001339867A (ja) * | 2000-05-30 | 2001-12-07 | Sanyo Electric Co Ltd | 電池とモーターを内蔵する電気機器 |
US6507164B1 (en) * | 2001-04-20 | 2003-01-14 | Brunswick Corporation | Current based power management for a trolling motor |
US20030060094A1 (en) * | 2001-06-11 | 2003-03-27 | Motsenbocker Marvin A. | Efficient motors and controls for watercraft |
-
2006
- 2006-02-27 EP EP06003968A patent/EP1806281A1/fr not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10257605A (ja) * | 1997-03-12 | 1998-09-25 | Isuzu Motors Ltd | 電気自動車制御装置 |
JPH11164488A (ja) * | 1997-11-26 | 1999-06-18 | Yamaha Motor Co Ltd | 電動車両のバッテリ充放電管理装置 |
JP2001339867A (ja) * | 2000-05-30 | 2001-12-07 | Sanyo Electric Co Ltd | 電池とモーターを内蔵する電気機器 |
US6507164B1 (en) * | 2001-04-20 | 2003-01-14 | Brunswick Corporation | Current based power management for a trolling motor |
US20030060094A1 (en) * | 2001-06-11 | 2003-03-27 | Motsenbocker Marvin A. | Efficient motors and controls for watercraft |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 14 31 December 1998 (1998-12-31) * |
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 11 30 September 1999 (1999-09-30) * |
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 04 4 August 2002 (2002-08-04) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2498366A4 (fr) * | 2009-11-06 | 2015-05-06 | Panasonic Ip Man Co Ltd | Réseau de distribution d'énergie |
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