• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a control unit (1) for a truck vehicle with a control motor designed as a delay motor (2) and a control electronics (5), the control motor (2) being arranged in a motor housing (6) and the control electronics (5) being arranged in an electronics housing (7). and the motor housing (6) forms a one-component together with the electronics housing (7). The task of providing a control unit in which a thermal overload of the control electronics is effectively avoided with low manufacturing cost and small space requirements is solved by the invention in that the electric motor (2) is arranged in a separate motor housing (6) and the control electronics (5) arranged in a separate electronics housing (7). the electronics housing (7) is attached to the motor housing (6) by means of a fastening device (8) and the electronics housing (7) is thermally separated from the motor housing (6).
    公开号:SE534143C2
    申请号:SE0802044
    申请日:2008-09-29
    公开日:2011-05-10
    发明作者:Andreas Fischer；Niels Schmidt
    申请人:Still Gmbh；
    IPC主号:
    专利说明:

    The control units are cooled by natural convection via the common housing, whereby the heat losses arising during the operation of the control unit are emitted to the surroundings.
    However, through the integration of the control electronics and the electric motor in a common housing, the heat losses of the electric motor during the operation of the control unit are delivered directly to the control electronics. Since the electric motors used can generally be operated with a higher maximum working temperature than the control electronics can, during the operation of the control unit operating temperatures which are too high for the control electronics can occur and thus the control electronics are thermally overloaded. In addition, high operating temperatures of the control electronics lead to a shortened service life of the control electronics. These effects are amplified by the fact that, due to the available space of truck vehicles, the control unit and thus the electric motor is arranged vertically, whereby the control electronics are located above the hot electric motor.
    In order to avoid thermal problems of the control electronics during the operation of the control unit, a cooling device, for example a fan, can be arranged, which generates a cooling air stream to increase the heat dissipation from the electric motor and / or the control electronics to the environment by means of a forced convection. However, such a cooling device causes an additional space requirement and an additional manufacturing cost. In addition, a fl ride, due to fouling, increases the risk of failure and consumes additional electrical energy.
    The object of the present invention is to provide a control unit of the type mentioned in the introduction, in which a thermal overload of the control electronics can be effectively avoided with a small manufacturing cost and a small space requirement.
    The task is solved according to the invention in that the electric motor is arranged in a separate motor housing and the control electronics are arranged in a separate electronics housing, the electronics housing being attached to the motor housing by means of a fastening device and the electronics housing being thermally disconnected from the motor housing. According to the invention, the electric motor and the control electronics are thus arranged in respective separate housings, wherein the two housings are connected by means of a fastening device on the one hand to a component and on the other hand are thermally disconnected from each other. In this way it is achieved in accordance with the invention that the advantages of a design of the control unit as a single component with regard to easily conducted power connections and a simple connection of sensors between the electric motor and the control electronics as well as a simple and compact arrangement of the control unit in the truck vehicle can be achieved. control electronics can be effectively avoided with little additional manufacturing cost and little additional space requirements. Through the respective separate housings and the thermal disconnection of the control electronics from the electric motor, it is achieved in a simple manner that a maximum operating temperature of the control electronics during the operation of the electric motor is not exceeded and thus that the electric motor can be operated with an increased operating temperature. The driving force available to the electric motor can thus be utilized optimally without danger of a thermal overload of the control electronics. All in all, a control unit is thus achieved which, with a small space requirement and low manufacturing cost, exhibits a high efficiency, and in which a thermal overload of the control electronics is effectively avoided. By omitting a genuinely designed cooling device, a high availability of the inventive control unit is also obtained.
    According to an advantageous embodiment of the invention, an air gap, in particular an horizontally arranged air gap, is arranged between the motor housing and the electronics housing. By means of such an insulating air gap between the motor housing and the electronics housing, a thermal disconnection is obtained in a simple manner, whereby the amount of heat of the electric motor, which is transferred via the air gap from the motor housing of the electric motor to the control electronics housing, is less.
    As a result, a thermal overload of the control electronics during the operation of the electric motor can be effectively avoided and thus the electric motor is operated with an operating temperature which is above the maximum operating temperature of the control electronics.
    Accordingly, according to an embodiment of the invention, at least one bushing for electrical and / or mechanical connections is arranged between the electronics housing and the motor housing. By means of such an embodiment, the power connections for the electric motor and connecting cables for sensor devices can be arranged in a simple manner and with little manufacturing cost between the electric motor and the control electronics inside the component formed by the motor housing and the electronics housing. In addition, it is possible to lead via the bushing a mechanical connection for a speed sensor arranged, for example, in the electronics housing or a speed position sensor of the electric motor, which is in effective connection with the electric drive output shaft of the electric motor.
    Suitably the bushing and / or the fastening device consist of a material of low thermal conductivity. In this way it is achieved that, via the bushing or the fastening device, only a small amount of heat is transferred from the electric motor to the control electronics. According to a suitable embodiment of the invention, the fastening device is formed by fastening elements, in particular screw connections, which in particular are arranged in a uniformly distributed manner on a dividing circle. With such a fastening device, a mechanical connection of the motor housing and the electronics housing to a component can be achieved with a small manufacturing cost.
    Preferably, the control electronics are arranged horizontally above the electric motor. In this way, a large radiating surface for the heat dissipation from the control electronics to the surroundings is achieved in a simple manner on the upper side of the electronics housing and a compact construction with a low construction height is achieved on the control unit according to the invention.
    The electric motor can in this case be designed as a three-phase motor, in particular an asynchronous motor, which can be supplied with electrical energy by means of a power electronics integrated in the control electronics.
    It is also possible to design the electric motor as a direct current motor.
    Further advantages and details of the invention will be explained in more detail with reference to the exemplary embodiment shown in the schematic diagram.
    In the unit, an inventive control unit 1 of a truck vehicle is shown.
    The vertically arranged control unit 1 has an electric motor 2, which via a transmission 3, for example a transmission with a fixed gear, drives an output drive shaft 4. For the regulation of the electric motor 2 and the supply of the electric motor 2 with electrical energy, a 534 143 control device 5 is arranged, which is arranged horizontally above the electric motor 2.
    According to the invention, the electric motor 2 is arranged in a separate motor housing 6 and the control electronics 5 are arranged in a separate electronic housing 7, which by means of a fastening device 8 are mechanically connected to a component. Between the motor housing 6 and the electronics housing 7, it is hereby possible by means of the fastening device 8 to obtain a horizontally arranged air gap 9, which thermally separates the electric motor 2 from the control electronics 5.
    The fastening device 8 has fastening elements 10, for example designed as screw connections, which are arranged in particular on a dividing circle. As a result, the electronics housing 7 can be easily attached to the top of the motor housing 6 and the motor housing 6 can be connected to the electronics housing 7 to a component. The air gap 9 can in this case be produced by means of spacer sleeves or spacer projections arranged on the underside of the electronics housing 7 in a simple manner and can be changed.
    Between the electronics housing 7 and the motor housing 6 a bushing 11 is arranged, which is for instance concentric with the output drive shaft 4 and in which the electrical and / or mechanical connections between the control electronics 5 and the electric motor 2 can be conducted.
    Via the bushing 11, for example, power connections are led from the control electronics 5 to the electric motor 2 and connecting lines are led from sensor devices arranged in the motor housing 6, for example a temperature sensor and a speed sensor or a drive position sensor, to the control electronics 7.
    The bushing 11 as well as the fastening device 8 suitably consist of a material with a low thermal conductivity, whereby the input of the heat losses of the electric motor 2 to the control electronics 5 via the bushing 11 can be reduced.
    At the electronics housing 7, for example, on a side surface at least one connection bushing 12 for an electrical power connection and a plug 13 for a control line are arranged.
    The control device 1 according to the invention, in which the electric motor 2 is arranged in a separate motor housing 6 and the control electronics 5 is arranged in a separate electronics housing 7, is connected to a component by means of the fastening device 8. In this way, compact dimensions are achieved on the control unit 1 with a low construction height, whereby it is achieved that with a small space requirement it is possible to easily install the control unit in a truck vehicle.
    Via the bushing 11, it is possible with a simple mechanical and electrical connection between the electric motor 2 and the control electronics 5 inside the component formed by the control electronics 5 and the electric motor 2.
    The motor housing 6 is in this case thermally separated from the electronics housing 7 by means of the air gap 9, whereby a thermal overload of the control electronics 5 can be effectively and efficiently avoided. As a result, the electric motor 2 can be operated with an operating temperature which is above the maximum operating temperature of the control electronics 5. The drive power available from the electric motor 2 can thus be utilized optimally, whereby a high efficiency is achieved in the inventive control unit 1.
    权利要求:
    Claims (4)
    [1]
    A control unit for a truck vehicle with a control motor designed as an electric motor and a control electronics, the unit being arranged vertically and the electric motor being arranged in a motor housing and the control electronics being arranged in an electronics housing, and the motor housing forming a component together with the electronics housing. 2) is arranged in a separate motor housing (6) and the control electronics (5) are arranged in a separate electronics housing (7), where the electronics housing is located above the motor housing, the electronics housing (7) being fixed to the motor housing (6) by means of a fastening device (8). ), characterized in that the electronics housing (7) is thermally disconnected from the motor housing (6) by means of a horizontal air gap (9) formed between the motor housing (6) and the electronics housing (7), which thermally separates the electric motor (2) from the control electronics (5). without a drive being arranged therebetween, at least one bushing (11) for electrical and / or mechanical connections being arranged between the electronics housing (7) and the motor housing. set (6), and that the bushing (11) and / or the fastening device (8) consists of a material with low thermal conductivity whereby the input of the electric motor (2) heat losses to the control electronics (5) can be reduced, and that the control electronics (5) are arranged horizontally above the electric motor-n (2).
    [2]
    Control unit according to Claim 1, characterized in that the fastening device (8) is formed by fastening elements (10), in particular screw connections, which in particular are uniformly distributed on a dividing circle.
    [3]
    Control unit according to one of Claims 1 to 2, characterized in that the electric motor (2) is designed as a three-phase motor, in particular as an asynchronous motor. 534- 143
    [4]
    Control unit according to one of Claims 1 to 3, characterized in! because the electric motor (2) is designed as a direct current motor.
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    同族专利:
    公开号 | 公开日
    DE102007053840A1|2009-04-30|
    SE0802044L|2009-04-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102007051321|2007-10-26|
    DE102007053840A|DE102007053840A1|2007-10-26|2007-11-12|Steering unit for use in industrial truck, has closed electronic housing fixed at motor housing by fixing device, where electronic housing is thermally decoupled from motor housing, and electric motor is arranged in motor housing|
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