CN115224863A - 具有径向轴密封环的电机 - Google Patents

具有径向轴密封环的电机 Download PDF

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CN115224863A
CN115224863A CN202210291172.3A CN202210291172A CN115224863A CN 115224863 A CN115224863 A CN 115224863A CN 202210291172 A CN202210291172 A CN 202210291172A CN 115224863 A CN115224863 A CN 115224863A
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rotor
housing
electric machine
radial shaft
coolant
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A.迪茨
P.霍尔茨海默
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Valeo eAutomotive Germany GmbH
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Valeo Siemens eAutomotive Germany GmbH
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/124—Sealing of shafts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/24—Protection against failure of cooling arrangements, e.g. due to loss of cooling medium or due to interruption of the circulation of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/14—Casings; Enclosures; Supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

一种电机(1)，包括：壳体(2)，其中容纳有定子(3)和能够相对于定子(3)旋转的转子(4)；具有冷却通道(5)的冷却装置，冷却剂可以流过该冷却通道，并且该冷却通道从入口(7)延伸穿过壳体(2)和穿过转子(4)到达出口(6)；以及密封装置(18)，用于相对于壳体的内部空间(19)密封转子(4)，其中，密封装置(18)具有径向轴密封环(11)，其围绕转子(4)并且界定用于冷却剂泄漏的储存器(12)。此外，描述了一种用于具有这种电机(1)的车辆(14)的传动系，以及一种用于运行电机(1)的方法。

Description

具有径向轴密封环的电机
技术领域
本发明涉及一种电机，该电机包括：壳体，在该壳体中容纳有定子和能够相对于定子旋转的转子；冷却装置，该冷却装置具有冷却通道，冷却剂能够流过该冷却通道，并且该冷却通道从入口延伸穿过壳体和穿过转子到达出口；以及密封装置，用于相对于壳体的内部空间密封转子。
背景技术
这种类型的电机越来越多地用于电驱动车辆或混合动力车辆。这里，电机主要用作驱动车辆车轮或车轴的电动马达。电动马达尤其可以配置为同步马达或异步马达。
电动马达通常机械地联接到齿轮箱，用于旋转速度适应。电动马达通常另外电连接到逆变器，该逆变器根据由电池提供的DC电压产生AC电压，特别是多相AC电压，用于电机的运行。
电机也可以作为发电机运行，用于回收车辆的动能，其中动能首先转化为电能，然后转化为电池的化学能。
电机的转子通常具有由圆柱形转子主体包围的转子轴。除了层叠金属板堆叠之外，转子主体还可以具有永磁体或带有电导体的绕组。
由于在电机运行期间产生的热量，所述电机具有用于散热的冷却装置，该冷却装置包括冷却通道，液体冷却剂能够流过该冷却通道。冷却通道从入口延伸穿过电机的壳体并向前穿过转子到达形成在壳体中的出口。在回路中输送冷却剂，其例如可以是水-乙二醇混合物。
密封装置相对于壳体密封转子。特别地，穿过转子的填充冷却剂的冷却通道相对于壳体的内部空间被密封，使得没有冷却剂能够从冷却通道进入内部空间并导致那里的损坏，例如由于腐蚀。内部空间尤其可以容纳定子，或者可以填充有空气。
温度引起的壳体内部空气体积的变化需要提供通风和/或换气，以防止在壳体中产生负压或正压。为此，可以设置通风通道，该通风通道从密封装置延伸到壳体的开口。
已经发现，尽管有密封装置，但在电机运行期间，经由密封装置会发生至少少量的冷却剂技术泄漏。这种技术泄漏(冷却剂泄漏)尤其在电机沿特定旋转方向运行时发生。在使用电机驱动的车辆的情况下，泄漏可能发生在例如反向行驶期间。
已经提出将技术泄漏收集在与电机壳体分离的储存器中，也就是说在特殊容器中。然而，在车辆的维护过程中，所述容器必须以一定的时间间隔清空，导致不希望的精力和成本。
如果储存器替代地布置在壳体中，则会存在冷却剂泄漏出储存器进入电机内部空间并在那里造成损坏的风险。这种损坏可能是由于布置在内部空间中的定子绕组的腐蚀而发生的。
为了解决该问题，已经提出为电机转子的轴承配备密封件，该密封件防止冷却剂泄漏进入内部空间。然而，这种密封的转子轴承的密封作用是不充分的，因此冷却剂泄漏仍可以进入内部空间。
如果冷却剂泄漏由于电机的运行热量而汽化或蒸发，则尤其会产生风险。因此，冷却剂泄漏从液态聚集状态变为气态聚集状态，在气态聚集状态下，冷却剂泄漏可以容易地克服由密封的转子轴承形成的屏障。
发明内容
本发明的目的是提供一种能够以较低的维护费用运行的电机，其中防止由已经进入电机内部空间的泄漏引起的损坏。
为了在引言中所述类型的电机的情况下实现该目的，根据本发明规定，密封装置具有径向轴密封环，其围绕转子并且界定用于冷却剂泄漏的储存器。
利用径向轴密封环，可以可靠地防止冷却剂泄漏进入电机的内部空间。这允许储存器布置在电机的壳体中，由此储存器可以自行动或自动化的方式被清空。因此消除维护期间清空储存器。因此，电机无需维护即可运行，从而节省成本。
径向轴密封环以本身已知的方式用于相对于周围环境密封旋转轴。径向轴密封环通常具有由弹性体材料构成的外壳，其中嵌入有由金属构成的加强环。与旋转轴接触的密封件位于轴密封环的内径上。
本发明的另一个优点在于，通过储存器在壳体中的布置，相对于单独的储存器，可以节省结构空间。
应当注意，电机的冷却通道穿过转子的转子轴。然而，也可以设想冷却通道穿过转子的一些其他部分，例如穿过转子的转子主体。
密封装置优选地配置成在径向方向和轴向方向上密封转子。这防止冷却剂从冷却通道中逸出并进入例如转子轴的轴承中。径向方向上的密封可以通过径向轴密封环来实现。轴向方向上的密封可以通过滑环密封件来实现，该滑环密封件同样属于密封装置。
储存器可以形成在径向轴密封环和电机的壳体之间。特别地，储存器可形成在径向轴密封环和沿轴向方向封闭壳体的盖之间。盖可以例如封闭壳体的开口，转子在电机组装期间沿轴向方向插入该开口中。因此，可以将现有的自由空间用于储存器，从而不需要额外的结构空间。作为此的替代，储存器也可以形成在径向轴密封环和除了盖之外的壳体的一部分之间。
该盖优选通过铸造工艺生产。以这种方式，可以廉价地生产大单位数量的盖。盖可以优选由铝合金制成，因此其质量特别低。作为此的替代，盖也可以由塑料制成，或者作为变形的金属板。
本发明的一个改进规定，径向轴密封环设置有油脂填充物。该油脂填充物减少径向轴密封环和转子之间的摩擦，从而也减少密封件的磨损。径向轴密封环的密封作用也因此得到改善。
也可以规定径向轴密封环具有干运转(dry-running)配置。在干运转密封的情况下，没有流体动力滑动膜，因此在所有运行状态下确保足够的密封作用。
上述目的还通过用于车辆的传动系来实现，该传动系具有根据本发明的电机。传动系可以另外具有联接到电机的齿轮箱和/或连接到电机的逆变器，通过该逆变器可以提供电机运行所需的多相AC电压。
该目的还通过具有所述类型的传动系的车辆来实现。
该目的还通过根据本发明的用于运行电机的方法来实现。该电机具有：壳体，其中容纳有定子和能够相对于定子旋转的转子；具有冷却通道的冷却装置，冷却剂能够流过该冷却通道，该冷却通道从入口延伸穿过壳体和穿过转子到达出口；以及密封装置，用于相对于壳体的内部空间密封转子。
根据本发明的方法的特征在于，用于冷却剂泄漏的储存器由围绕转子的径向轴密封环界定。
结合电机的描述所讨论的优点和细节不言而喻地同样适用于根据本发明的方法。
附图说明
下面将参照附图基于示例性实施例来讨论本发明。附图是示意图，其中：
图1示出了根据本发明的电机的透视截面图；
图2示出了图1中转子轴右端的放大图；
图3示出了密封装置的细节；以及
图4示出了根据本发明的车辆。
具体实施方式
图1的透视截面图中所示的电机1属于车辆的驱动装置。可替代地，电机1也可以具有一些其他功能。
电机1包括具有内部空间19(见图2)的壳体2，定子3和转子4容纳在该内部空间中，该转子4能够相对于定子3旋转并且具有转子轴20。转子轴20被圆柱形转子主体21包围。电机1还包括具有冷却通道5的冷却装置，冷却剂能够流过该冷却通道，并且该冷却通道从入口7延伸穿过壳体2到达出口6。
也可以彼此互换的入口7和出口6经由冷却剂管线(未示出)连接到泵，使得冷却剂在回路中输送。冷却剂消散电机1运行期间产生的热量。
从图1中可以看出，冷却通道5从入口7开始延伸穿过壳体2。冷却剂流过冷却管22(也称为“喷枪”)进入转子4的中空转子轴20。在冷却管22的端部，冷却剂的流动方向反向，随后冷却剂沿着转子轴20的内壁流出转子轴20，经过密封装置18(见图2),并向前流到出口6。
在壳体2的外部，布置有逆变器8，其提供电机1的运行所需的多相AC电压。
图2是剖视图，示出了图1所示的转子轴20的右端。密封装置18用于相对于壳体2在径向方向和轴向方向上密封转子轴20。特别地，密封装置18用于相对于容纳定子3的壳体2的内部空间19密封转子轴20。该密封防止冷却剂进入内部空间19并导致例如其中定子3的绕组腐蚀。
密封装置18包括滑环密封件9和径向轴密封环11。滑环密封件9沿轴向方向布置在转子轴20的自由端(在图2中的右侧)和壳体2的一部分之间。滑环密封件9轴向地密封转子轴20。
转子4的端部被由硬化的高级钢制成的套筒10包围。套筒10被径向轴密封环11包围，该密封环相对于壳体2的内部空间19径向密封转子轴20。径向轴密封环11设置有油脂填充物，并且配置为干运转径向轴密封环11。
密封装置18具有这样的特性，即在被分配给车辆反向行驶的电机的特定旋转方向上发生上述技术泄漏。然而，所述技术泄漏仅涉及几毫升的小体积。
在图2的截面图和示出密封装置18的细节的图3的放大图中，可以看到在滑环密封件9、径向轴密封环11和壳体2的围绕密封件的那部分之间形成环绕的自由空间。所述自由空间尤其是其在安装状态下的下部区域用作冷却剂泄漏的储存器12。如果由于电机1的运行而发生技术泄漏，特别是在反向行驶期间，所述泄漏收集在储存器12中。
在旋转方向反向的情况下，所述冷却剂泄漏经由密封装置18被供应回冷却剂回路。因此，如果转子4在与第一方向相反的方向上旋转，储存器12再次被清空。
壳体2在其轴向侧由盖13封闭。在所示的示例性实施例中，盖13由铝合金构成，并且通过注射成型来生产。
总之，在转子4沿第一旋转方向旋转期间发生的冷却剂泄漏被收集在储存器12中，并且在转子4沿相反的第二旋转方向旋转期间，所述泄漏通过滑环密封件9再次被输送出储存器12。
图4示出了具有包括电机1的传动系的车辆14。电机1经由齿轮箱15联接到车辆14的车轮16。电机1另外电连接到逆变器8。电池17提供DC电压，该DC电压通过逆变器8转换成用于电机1运行的AC电压。
附图标记列表
1 电机
2 壳体
3 定子
4 转子
5 冷却通道
6 出口
7 入口
8 逆变器
9 滑环密封件
10 套筒
11 径向轴密封环
12 储存器
13 盖
14 车辆
15 齿轮箱
16 车轮
17 电池
18 密封装置
19 内部空间
20 转子轴
21 转子主体
22 冷却管

Claims (10)

1.一种电机(1)，包括：
-壳体(2)，其中容纳有定子(3)和能够相对于所述定子(3)旋转的转子(4)，
-具有冷却通道(5)的冷却装置，冷却剂能够流过所述冷却通道，并且所述冷却通道从入口(6)延伸穿过所述壳体(2)和穿过所述转子(4)到达出口(6)，以及
-密封装置(18)，用于相对于所述壳体(2)的内部空间(19)密封所述转子(4)，
其特征在于，所述密封装置(18)具有径向轴密封环(11)，所述径向轴密封环(11)围绕所述转子(4)并且界定用于冷却剂泄漏的储存器(12)。
2.根据权利要求1所述的电机，其中，所述密封装置(18)配置成在径向方向和轴向方向上密封所述转子(4)。
3.根据权利要求1或2所述的电机，其中，所述储存器(12)形成在所述径向轴密封环(11)和沿轴向方向封闭所述壳体(2)的盖(13)之间。
4.根据权利要求3所述的电机，其中，所述盖(13)通过铸造工艺生产。
5.根据权利要求3或4所述的电机，其中，所述盖(13)由铝合金制成。
6.根据前述权利要求中任一项所述的电机，其中，所述径向轴密封环(11)设置有油脂填充物。
7.根据前述权利要求中任一项所述的电机，其中，所述径向轴密封环(11)具有干运转配置。
8.一种用于车辆(14)的传动系，所述传动系具有根据权利要求1至7中任一项所述的电机(1)。
9.一种具有根据权利要求8所述的传动系的车辆(14)。
10.一种用于运行电机(1)的方法，所述电机具有壳体(2)，其中容纳有定子(3)和能够相对于定子(3)旋转的转子(4)，该电机具有带有冷却通道(5)的冷却装置，冷却剂能够流过所述冷却通道，并且所述冷却通道从入口(7)延伸穿过所述壳体(2)和穿过所述转子(4)到达出口(6)，所述电机还具有密封装置(18)，用于相对于壳体(2)的内部空间(19)密封所述转子(4)，
其特征在于，用于冷却剂泄漏的储存器(12)由围绕转子(4)的径向轴密封环(11)界定。
CN202210291172.3A 2021-03-31 2022-03-23 具有径向轴密封环的电机 Pending CN115224863A (zh)

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