EP2907739B1 - Moteur marin avec circuit de refroidissement - Google Patents

Moteur marin avec circuit de refroidissement Download PDF

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Publication number
EP2907739B1
EP2907739B1 EP14000540.6A EP14000540A EP2907739B1 EP 2907739 B1 EP2907739 B1 EP 2907739B1 EP 14000540 A EP14000540 A EP 14000540A EP 2907739 B1 EP2907739 B1 EP 2907739B1
Authority
EP
European Patent Office
Prior art keywords
coolant
boat
line
electric motor
drive
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.)
Active
Application number
EP14000540.6A
Other languages
German (de)
English (en)
Other versions
EP2907739A1 (fr
Inventor
Marc Hartmeyer
Jens Biebach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Torqeedo GmbH
Original Assignee
Torqeedo GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Torqeedo GmbH filed Critical Torqeedo GmbH
Priority to EP14000540.6A priority Critical patent/EP2907739B1/fr
Priority to DK14000540.6T priority patent/DK2907739T3/en
Priority to US14/621,085 priority patent/US9446830B2/en
Priority to CN201510075335.4A priority patent/CN104852104B/zh
Publication of EP2907739A1 publication Critical patent/EP2907739A1/fr
Application granted granted Critical
Publication of EP2907739B1 publication Critical patent/EP2907739B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B63H20/28—Arrangements, apparatus and methods for handling cooling-water in outboard drives, e.g. cooling-water intakes
    • 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
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/28—Arrangements, apparatus and methods for handling cooling-water in outboard drives, e.g. cooling-water intakes
    • B63H20/285—Cooling-water intakes
    • 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
    • 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
    • B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • B63H21/383—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like for handling cooling-water

Definitions

  • the invention relates to a boat drive, in particular an outboard drive, with an electric motor and a coolant line, which is in thermal contact with the electric motor and which has a coolant inlet and a coolant outlet, wherein a pump is provided to coolant for cooling the electric motor through the coolant line pump, wherein a further, spatially separated from the boat drive, is provided to be cooled component and that the coolant line is in thermal contact with the other component.
  • the invention relates to a method for cooling a component on a boat, the boat having a boat drive cooled by means of a coolant, and the component being spatially separated from the boat drive, the coolant from the boat drive to the boat Component is routed.
  • Outboard engines for boats are usually equipped with a cooling circuit. Water is sucked in by a pump and fed via a coolant line to the engine. The coolant line is in thermal contact with the engine so that the engine and the coolant exchange heat and the engine is cooled.
  • Object of the present invention is therefore to provide a boat drive and a corresponding method, which allow improved cooling of the battery or other components located in the boat.
  • the cooling circuit includes a coolant line through which coolant is pumped, which cools the electric motor.
  • the coolant line is arranged so that it is in thermal contact with the electric motor and heat is exchanged between the electric motor and the coolant flowing through the coolant line.
  • the boat drive In addition to the electric motor, there are other components in the boat, such as a battery, which must be cooled, but which are spaced from the boat drive spatially.
  • the term “spaced apart” or “spatially separated” shall also include an arrangement in which the distance between the electric motor and the further component is more than 100 cm, more than 150 cm or more than 200 cm, and in particular an arrangement in which the other component is inside the boat. It should also be understood an arrangement in which the boat drive is provided with a housing in which the electric motor is located, and wherein the further component is provided outside the housing.
  • the coolant line is also led to the further component and brought into thermal contact with it.
  • the other component is thus integrated into the cooling circuit of the electric motor. On a separate cooling for the other component can therefore be omitted.
  • the coolant is first supplied to the electric motor and then to the further component.
  • the coolant line can also be provided so that the coolant is first supplied to the further component and then to the electric motor.
  • the electric motor and the further component can also be cooled in parallel. In the latter Case, the coolant line is divided into two or more parallel segments leading to the electric motor or one or more other components.
  • the invention has significant advantages over a separate water cooling for the other component.
  • the coolant supply takes place via the coolant line provided for the electric motor, so that no separate supply of water from outside into the boat interior has to be established.
  • the discharge of the coolant heated by the further component can also take place via the coolant line.
  • the invention can be used in all types of electric boat drives, such as inboard or outboard. Special advantages are shown in outboard drives.
  • water is used as the coolant, in particular water from the waters surrounding the boat.
  • the invention is advantageously used for cooling a battery provided for the power supply of the electric motor, in particular for cooling a battery located inside the boat. It is also convenient to cool the battery in the times when it is not used, that is, when the electric motor is not in operation. In this way, the calendar aging of the battery can be reduced.
  • a further advantageous application of the invention relates to the cooling of a battery charger located on board the boat.
  • Weight and size of a provided with a liquid cooling, in particular water cooling, battery charger can be chosen smaller, so that there is a greater flexibility with respect to the installation site.
  • an additional heater for the battery and / or the other components may be provided to bring them to operating temperature faster.
  • an additional heater for the battery and / or the other components may be provided to bring them to operating temperature faster.
  • the temperature difference between the cooled surfaces and the ambient air is too high, condensate formation or condensation on the cooled surfaces occurs, which is especially the case with electrical components, such as e.g. a battery is not desired.
  • by selectively using the engine heat loss it may be possible to raise the coolant temperature to a level at which dew of the cooled components does not take place. If an even better temperature control of the coolant is necessary, in addition or as an alternative to the use of the engine waste heat, the insertion of an additional heater may be advantageous.
  • the coolant line has a first line section and a second line section.
  • the first line section is in thermal contact with the electric motor and the second line section is in thermal contact with the further component.
  • the first and the second line section are detachably connected to each other.
  • the conventional cooling circuit for the electric motor which is the first line section, is provided with connection elements to which the second line section can be connected.
  • connection of the first and second line section is preferably carried out by means of a plug, screw or bayonet connection.
  • These connecting elements are preferably self-closing, so that in the case of the separation of the line sections no coolant exits from the connecting elements.
  • the original coolant line which was provided only for cooling the electric motor, is extended so that it is also in thermal contact with one or more other components, so that they are also cooled by the coolant.
  • the invention is particularly suitable for cooling the battery.
  • the battery must also be electrically connected to the boat drive, in particular to the electric motor.
  • the combination connection element simultaneously allows the connection of the battery to the cooling circuit of the electric motor and the electrical connection between the battery and the electric motor.
  • the combination connecting element can also have a plurality of electrical connections for low and high-voltage connections.
  • the combination connecting element can also be used for connecting other components which are to be connected to the cooling circuit as well as to be electrically connected to the boat drive.
  • Self-closing water connection elements can additionally ensure that the electrical contacts of the combination connection element do not come into contact with water.
  • the coolant line can provide a monitoring device for monitoring the flow, the pressure and / or the temperature.
  • the monitoring device can measure and / or indicate the aforementioned variables flow, pressure and / or temperature or can also be connected to control elements, which can serve to influence the coolant flow.
  • the coolant line preferably has a coolant inlet and a coolant outlet, is sucked via the cooling water from outside the boat and discharged again after cooling of the electric motor and the other component (s).
  • the cooling circuit can be designed as a single-circuit system or as a dual-circuit system.
  • a single-circuit system cooling water is sucked in by means of a pump, passed via the coolant line to the electric motor and the one or more other components, and then discharged again to the environment, usually to the water surrounding the boat.
  • the further component is in this case either connected in series with the electric motor in the coolant line or the coolant line is split into two or more parallel line sections, which serve to cool the electric motor and one or more other components.
  • the shaft of the outboard motor acts as a heat exchanger.
  • This embodiment is particularly suitable for outboard motors and is e.g. then advantageous if the boat must be moved in waters that are contaminated with flammable liquids, as may be the case with fire boats.
  • the coolant circuit to which the electric motor, various other components to be cooled in the immediate vicinity of the electric motor and also to be cooled components that are located on the boat itself and connected to the coolant line to the electric motor of the outboard motor connected are.
  • the coolant line within the engine shaft of the outboard drive is guided below the shaft surface so as to provide optimum heat transfer from the coolant to the body of water in which the shaft is located.
  • the outer surface of the motor shaft may be e.g. be enlarged by ribs. These ribs are to be mounted so that the negative influence on the hydrodynamics is minimal.
  • the cooling water supplied from the outside serves for cooling a secondary closed coolant circuit, by means of which the electric motor and / or the further component are cooled.
  • a secondary closed coolant circuit by means of which the electric motor and / or the further component are cooled.
  • the second conduit section of the coolant line may be beneficial to provide with a separate coolant inlet and / or a separate coolant outlet.
  • the coolant i. In this case, water from the water surrounding the boat is then sucked or supplied not only via the coolant inlet of the first line section but also via the separate coolant inlet. In this way, a larger amount of coolant can be provided for cooling.
  • a second pump in the second line section.
  • a second line section is connected to the first line section and to enhance the coolant circulation, a second pump is used.
  • a pump both in the first and in the second line section, for example, impeller pumps, electric pumps or regenerative pumps can be used.
  • Optimum system efficiency is achieved by using a variable-speed pump, whereby the pump speed is regulated as a function of the temperatures of the components to be cooled, wherein in general the respectively most critical temperature is used as the controlled variable.
  • the direction of flow within the cooling system depends on the direction of travel.
  • the pump must be operable in both directions. Since the pump nevertheless usually has a preferred direction, the pump is so preferably installed so that in the forward direction of the larger flow or the greater efficiency results.
  • the two water-side connections of the refrigeration cycle i. the coolant inlet and the coolant outlet, located below the surface of the water to ensure in both directions of suction of the water.
  • the inventive method of cooling a boat-mounted component the boat having a boat drive cooled by a coolant and with the component being spatially separated from the boat drive and the coolant being directed from the boat drive to the component, is characterized in that the coolant conduit has a first conduit portion which is in thermal contact with the electric motor, and in that the coolant conduit has a second conduit portion which is in thermal contact with the further component, the first and second conduit portions being detachably interconnected are connected.
  • the cooling circuit of the electric motor is used directly or indirectly also for cooling one or more further components, in particular the battery provided for supplying energy to the electric motor.
  • the invention makes it possible to easily expand an existing coolant circuit for the electric motor of a boat drive, in particular an outboard drive, so that other components, such as the battery, can be cooled.
  • a second line section is either permanently or detachably connected to the existing coolant line, which then represents the first line section, which leads the coolant to the one or more components to be cooled.
  • a boat 1 with an outboard drive 2 is shown schematically.
  • the outboard drive 2 is provided with a housing 3 in which an electric motor 4 for driving the boat 1 is located.
  • the electric motor 4 is controlled by an engine electronics 5.
  • the engine electronics 5 is also housed in the housing 3.
  • the electric motor 4 and the engine electronics 5 are equipped with a water cooling.
  • the water cooling system comprises a coolant inlet 6, via which water from outside the boat 1 can be sucked into a first line section 7a, 7b of a coolant line.
  • an impeller pump 8 is provided in the first line section 7a, 7b.
  • the sucked water is first passed through the electric motor 4 and then through the engine electronics 5 and brought into heat exchange with the electric motor 4 and the engine electronics 5 to cool them.
  • the warmed water is discharged via a coolant outlet 9 back to the environment.
  • the first line section 7a, 7b is split downstream of the engine electronics 5, so that two subsections 7a and 7b result.
  • the two ends of the subsections 7a and 7b terminate in a connector element 10.
  • the two ends of the subsections 7a, 7b can be connected on the flow side, so that the coolant can flow through the subsection 7a in the subsection 7b.
  • a second line section 13 is provided which is in thermal contact with the battery 12.
  • the second line section 13 has two terminal ends, which terminate in a plug 11.
  • the plug 11 can be connected to the plug connection element 10, so that a continuous coolant line 7a, 13, 7b is produced,
  • the water sucked in through the coolant inlet 6 flows through the pipe section 7a and cools the electric motor 4 and the engine electronics 5. Then, the coolant flows via the connector 10 and the plug 11 into the second pipe section 13 to cool the battery 12. The warmed coolant is then returned via the connector element 10 and the plug 11 in the line section 7b and discharged via the coolant outlet 9.
  • a generator 14 is provided on the cooling side in series with the battery 12.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Secondary Cells (AREA)

Claims (12)

  1. Moteur de bateau, en particulier moteur hors-bord, comprenant un moteur électrique et un conduit de liquide de refroidissement, qui est en contact thermique avec le moteur électrique, dans lequel une pompe est prévue afin de pomper du liquide de refroidissement pour refroidir le moteur électrique par le conduit de liquide de refroidissement, dans lequel un autre composant à refroidir spatialement séparé du moteur de bateau est prévu et le conduit de liquide de refroidissement est en contact thermique avec l'autre composant, caractérisé en ce que le conduit de liquide de refroidissement possède un premier tronçon de conduit, qui est en contact thermique avec le moteur électrique, et en ce que le conduit de liquide de refroidissement possède un deuxième tronçon de conduit, qui est en contact thermique avec l'autre composant, dans lequel le premier et le deuxième tronçon de conduit sont reliés l'un à l'autre de manière amovible.
  2. Moteur de bateau selon la revendication 1, caractérisé en ce que l'autre composant est une batterie ou un appareil de charge de batterie.
  3. Moteur de bateau selon la revendication 1, caractérisé en ce que le premier et le deuxième tronçon de conduit peuvent être reliés au moyen d'un système connecteur à fiches.
  4. Moteur de bateau selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'autre composant présente un raccordement électrique, et en ce qu'un élément de connexion combiné est prévu, lequel établit de manière simultanée la connexion électrique entre l'autre composant et le moteur de bateau et la connexion entre le premier et le deuxième tronçon de conduit.
  5. Moteur de bateau selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le conduit de liquide de refroidissement est pourvu d'un dispositif de surveillance servant à surveiller le débit, la pression et/ou la température.
  6. Moteur de bateau selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le conduit de liquide de refroidissement présente une entrée de liquide de refroidissement pour amener de l'eau de refroidissement provenant des eaux entourant le bateau et une sortie de liquide de refroidissement pour évacuer l'eau de refroidissement dans les eaux entourant le bateau.
  7. Moteur de bateau selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le deuxième tronçon de conduit présente une entrée de liquide de refroidissement séparée et/ou une sortie de liquide de refroidissement séparée.
  8. Moteur de bateau selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'une deuxième pompe est prévue dans le deuxième tronçon de conduit.
  9. Moteur de bateau selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le moteur de bateau est réalisé sous la forme d'un moteur hors-bord, dans lequel le moteur hors-bord comprend un arbre moteur, qui dépasse dans l'eau entourant le bateau, et dans lequel le conduit de liquide de refroidissement forme un circuit à liquide de refroidissement fermé et est guidé à travers l'arbre moteur de telle sorte que le liquide de refroidissement peut échanger de la chaleur avec l'eau entourant le bateau.
  10. Procédé pour refroidir un composant se trouvant sur un bateau, dans lequel le bateau présente un moteur de bateau, qui est refroidi au moyen d'un liquide de refroidissement, et dans lequel le composant est séparé spatialement du moteur de bateau, dans lequel le liquide de refroidissement est acheminé du moteur de bateau en direction du composant, caractérisé en ce que le conduit de liquide de refroidissement possède un premier tronçon de conduit, qui est en contact thermique avec le moteur électrique, et en ce que le conduit de liquide de refroidissement possède un deuxième tronçon de conduit, qui est en contact thermique avec l'autre composant, dans lequel le premier et le deuxième tronçon de conduit sont reliés l'un à l'autre de manière amovible.
  11. Procédé selon la revendication 10, caractérisé en ce que le liquide de refroidissement est réacheminé depuis le composant en direction du moteur de bateau.
  12. Procédé selon la revendication 10 ou 11, caractérisé en ce que l'eau provenant des eaux entourant le bateau est utilisée en tant que liquide de refroidissement.
EP14000540.6A 2014-02-14 2014-02-14 Moteur marin avec circuit de refroidissement Active EP2907739B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP14000540.6A EP2907739B1 (fr) 2014-02-14 2014-02-14 Moteur marin avec circuit de refroidissement
DK14000540.6T DK2907739T3 (en) 2014-02-14 2014-02-14 Boat drive with cooling circuit
US14/621,085 US9446830B2 (en) 2014-02-14 2015-02-12 Boat drive with cooling circuit
CN201510075335.4A CN104852104B (zh) 2014-02-14 2015-02-12 具有冷却回路的船用驱动装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14000540.6A EP2907739B1 (fr) 2014-02-14 2014-02-14 Moteur marin avec circuit de refroidissement

Publications (2)

Publication Number Publication Date
EP2907739A1 EP2907739A1 (fr) 2015-08-19
EP2907739B1 true EP2907739B1 (fr) 2017-04-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14000540.6A Active EP2907739B1 (fr) 2014-02-14 2014-02-14 Moteur marin avec circuit de refroidissement

Country Status (4)

Country Link
US (1) US9446830B2 (fr)
EP (1) EP2907739B1 (fr)
CN (1) CN104852104B (fr)
DK (1) DK2907739T3 (fr)

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Also Published As

Publication number Publication date
DK2907739T3 (en) 2017-07-24
US9446830B2 (en) 2016-09-20
CN104852104A (zh) 2015-08-19
EP2907739A1 (fr) 2015-08-19
CN104852104B (zh) 2021-04-02
US20150232163A1 (en) 2015-08-20

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