Drive system with oil preheating and vehicle with the drive system

Abstract

A drive system 1 for a vehicle is proposed, comprising an electric drive unit 2 which has at least one heat-generating drive component 3, with an oil circuit 4 for cooling and / or lubricating the drive unit 2, wherein the oil circuit 4 has at least one oil pump 5 and at least one oil reservoir 6, wherein the oil pump 5 is designed to pump oil from the oil reservoir 6 to at least one oil supply point in order to supply at least one drive component of the drive unit 2 with oil, wherein the heat-generating drive component 3 is thermally coupled to an oil circuit section 11 of the oil circuit 4 arranged between a reservoir inlet 9 of the oil reservoir 6 and a pump outlet 10 of the oil pump 6 in order to preheat the oil pump 5.

Description

[0001] The invention relates to a drive system for a vehicle having the features of the preamble of claim 1. Furthermore, the invention relates to an electric or hybrid vehicle having the drive system.

[0002] In an oil-cooled or oil-lubricated drive system, there is a strong relationship between the performance of the cooling and lubrication system and the viscosity of the oil. It is known to utilize the waste heat from a separate coolant circuit to heat the oil. To achieve this, the coolant circuit is thermally connected to the oil circuit via a heat exchanger. This allows the oil viscosity to be reduced at low temperatures.

[0003] The document DE 10 2018 209 340 B3 discloses an electric drive unit for a motor vehicle, comprising an electric machine with a stator and a rotor, an inverter with a first switching unit for energizing a first phase system of the stator, a transmission connected to the rotor for torque transmission, a lubricant circuit for lubricating the transmission and / or for cooling the rotor, a first coolant circuit for cooling the first switching unit, a lubricant-coolant heat exchanger for thermally coupling the first coolant circuit and the lubricant circuit, a control device which is designed to provide a loss-increasing operating mode for the first switching unit for increasing a power loss heating a coolant of the first coolant circuit, wherein the lubricant-coolant heat exchanger is designed toto transfer heat from the heated coolant to the lubricant circuit to reduce the viscosity of a lubricant.

[0004] The object of the invention is to create a drive system of the type mentioned above, which is characterized by improved oil preheating.

[0005] This object is achieved according to the invention by a drive system having the features of claim 1 and an electric or hybrid vehicle having the features of claim 15. Advantageous embodiments emerge from the subclaims, the drawings and / or the description.

[0006] The subject matter of the invention is a drive system that is designed and / or suitable for a vehicle, in particular an electric or hybrid vehicle. The drive system preferably serves to drive the vehicle. The drive system can be designed as an electric or hybrid drive train.

[0007] The drive system comprises an electric drive unit having at least or precisely one heat-generating drive component. The electric drive unit preferably serves to generate, transmit, and / or distribute a drive torque to at least or precisely one vehicle wheel of the vehicle. A heat-generating drive component is preferably a component of the electric drive unit involved in driving the vehicle, preferably an electric drive component, which heats up considerably during operation. The resulting waste heat can lead to damage to the drive component during continuous operation and must therefore be dissipated.

[0008] Furthermore, the drive system has an oil circuit designed and / or suitable for cooling and / or lubricating the drive unit. The oil circuit serves to cool and / or lubricate one or more driven drive components, such as gear wheels, rotor, drive or transmission shafts, bearings, etc. Alternatively or optionally in addition, the oil circuit also serves to cool and / or lubricate one or more stationary drive components, such as the stator, housing parts, etc. In particular, the oil circuit also serves to cool and / or lubricate the heat-generating drive component.

[0009] The oil circuit has at least one or more oil pumps and at least one or more oil reservoirs, the oil pump being configured to pump oil from the oil reservoir to at least one or more oil supply points in order to supply oil to at least one of the drive components. In particular, the oil reservoir serves as a reservoir from which the oil is fed via the oil pump to one or more oil supply points and then collected again in the oil reservoir. The at least one oil supply point can be configured, for example, as an engagement region of the gear wheels, a bearing point of the bearings or shafts, a nozzle for a winding head of the stator, or the like. The oil circuit can be configured as a wet or dry sump system. The oil can be engine and / or transmission oil.Particularly preferably, the oil pump is fluidly connected to the oil reservoir on a suction side, in particular to a pump inlet, via a suction line, and to the at least one oil supply point on the pressure side, in particular via the pump outlet, via a pressure line. The oil pump can be designed either as an electrically or mechanically operated oil pump.

[0010] Within the scope of the invention, it is proposed that the heat-generating drive component is thermally coupled to an oil circuit section of the oil circuit arranged between a reservoir inlet of the oil reservoir and a pump outlet of the oil pump in order to preheat the oil pumped by the oil pump. In particular, the thermal coupling serves to heat the oil with the waste heat of the heat-generating drive component before and / or in the oil pump. In other words, the heat-generating drive component is thermally coupled on the suction side of the oil pump and / or directly to the oil pump. In particular, the heat-generating drive component is thermally coupled to the oil pump and / or the oil reservoir and / or the suction line. Preferably, at least 50% of the waste heat generated by the drive component can be transferred to the oil circuit section.

[0011] The invention is based on the finding that oil pumps can have start-up problems and high energy requirements at low temperatures and the associated high oil viscosities due to excessive pressure resistance. In order to ensure active cooling and lubrication even at low temperatures, it is therefore necessary to heat the oil as quickly as possible. Due to the thermal coupling of the heat-generating drive components, in particular downstream of the pump, the oil is only heated very slowly or brought to its ideal operating temperature. By preheating the oil according to the invention before or in the oil pump, pump operation at low temperatures can be ensured without increasing the power of the pump drive. In particular, more efficient pump operation can be ensured because the pump consumes less energy to pump the same amount of oil. Due to the existing active oil lubrication orCooling at low temperatures means that more system power can be made available and the drive system can therefore be operated more efficiently.

[0012] In a specific embodiment, it is provided that the heat-generating drive component is thermally coupled to the oil circuit section via a heat transfer path formed independently and / or parallel to the oil circuit. In other words, the heat transfer path is formed separately or separately from the oil circuit. Preferably, the heat transfer path runs directly from the drive component to the oil circuit section. Preferably, the waste heat generated by the heat-generating drive component is transferred along the heat transfer path directly to the oil circuit section and thus to the oil. This allows the oil to be heated quickly, and the torque required to drive the oil pump can be reduced due to the locally lower viscosity of the oil.

[0013] In one specific embodiment, the drive system comprises a cooling circuit that is fluidically separated from the oil circuit and is designed and / or suitable for cooling the at least one heat-generating drive component by means of a coolant flow, wherein the cooling circuit is thermally coupled to the oil circuit section for heat transfer. In particular, the cooling circuit serves to implement fluid cooling, wherein a coolant circulates in the cooling circuit. Preferably, the at least one heat-generating drive component is arranged in the cooling circuit. In particular, the cooling circuit is designed separately from the oil circuit, so that the coolant flowing through the cooling circuit is not mixed with the oil flowing through the oil circuit.

[0014] The coolant flow can flow through, around, and / or against the heat-generating drive component. The cooling circuit preferably has at least one coolant pump designed to circulate the coolant in the cooling circuit. Particularly preferably, the heat transfer path is formed by the cooling circuit, preferably a cooling circuit section arranged between the heat-generating drive component and the oil circuit section. The coolant can be a cooling liquid, for example, water or an oil. Due to the thermal coupling between the heat-generating drive component and the oil circuit section via a separate cooling circuit, the oil can be preheated particularly quickly and efficiently. A further advantage is that the cooling circuit, e.g., in conjunction with a thermal management system, enables controlled temperature control of the oil.

[0015] In a specific implementation, the cooling circuit is thermally coupled to the oil circuit section downstream of the heat-generating drive component along the coolant flow. In other words, the coolant flow transports heat away from the heat-generating drive component toward the oil circuit section. In other words, the cooling circuit is thermally coupled to the oil circuit section downstream of the heat-generating drive component in the flow direction. Specifically, all components to be cooled by the cooling circuit are arranged fluidically upstream of the thermal coupling with the oil circuit section. This ensures rapid heating of the oil by the coolant flow.

[0016] In a specific implementation, the cooling circuit is thermally coupled to the oil pump via a heat jacket. In particular, a heat jacket is understood to be a flow-guiding component through which the coolant flows and which is in thermal contact with the oil pump, preferably a pump housing, in order to transfer the waste heat carried in the coolant flow to the oil pump. This preheats the oil in the oil pump or within the pump housing. The cooling circuit preferably has a supply line connected to the heat jacket on the inlet side and a return line connected to the heat jacket on the outlet side, wherein the coolant flows from the supply line via the heat jacket to the return line. The heat-generating drive component is preferably arranged on the supply side and / or connected to the supply line.A concept for preheating the oil is proposed in which the waste heat is directed directly to the oil pump. This ensures that the oil volume in the oil pump, and thus pumped by the oil pump, is reliably heated.

[0017] In one structural embodiment, the oil pump has a pump drive and a pump head, with the heat jacket surrounding the pump head. In particular, the pump head refers to the part of the oil pump in which the pump mechanism is located. The pump head preferably comprises the pump inlet and the pump outlet, also referred to as the inlet and outlet openings, through which the coolant to be pumped flows in and out. The pump drive, on the other hand, refers to the energy source that drives the pump mechanism to pump the coolant. In the case of an electric oil pump, this can be an electric drive, such as an electric motor, and in the case of a mechanical oil pump, this can be a mechanical drive, such as a toothed belt. In particular, the pump head is completely or at least largely surrounded by the heat jacket. The heat jacket enables the heated coolant to flow directly around the pump head.

[0018] In an alternative or optional supplementary embodiment, it is provided that the cooling circuit is thermally coupled to the oil circuit section via a heat exchanger. The heat exchanger serves to transfer heat from the coolant to the oil without the two media being mixed. The heat exchanger consists, for example, of tubes, plates or other surfaces that offer a large contact area in order to maximize the heat exchange between coolant and oil. The heat exchanger can be integrated into the suction line and / or the oil reservoir on the suction side. This preheats the oil upstream of the oil pump or outside the pump housing. The cooling circuit preferably has a supply line connected to the heat exchanger on the inlet side and a return line connected to the heat exchanger on the outlet side, with the coolant flowing from the supply line via the heat exchanger to the return line.Preferably, the heat-generating drive component is arranged on the inlet side and / or connected to the inlet line. Specifically, the heat exchanger is designed as an oil-water heat exchanger. Thus, a concept for preheating the oil is proposed by directing the waste heat to the suction side of the oil pump. This ensures that the oil volume flowing into the pump enters the pump head already preheated. The heat exchanger also allows the heat contained in the coolant to be easily transferred to the oil.

[0019] In one specific embodiment, the heat exchanger is thermally coupled to the oil reservoir. In principle, the heat exchanger can be arranged within the oil reservoir. The oil can flow around and / or through the heat exchanger. Alternatively, the heat exchanger can also be thermally coupled to a wall of the oil reservoir or integrated into the wall of the oil reservoir. For example, the heat exchanger can have a heat-conducting structure protruding into the oil reservoir, e.g., in the form of fins, pins, or the like, in order to increase the effective contact area with the oil. The heat exchanger arranged in or on the oil reservoir enables a particularly compact and space-saving coupling between the oil circuit and the cooling circuit.

[0020] In an alternative or optionally supplementary embodiment, the heat exchanger is integrated into the suction line. In particular, both the coolant and the oil can flow through the heat exchanger. The heat exchanger is preferably integrated into the suction line between the oil reservoir and the oil pump. For this purpose, the heat exchanger is preferably fluidly connected to the oil reservoir on the oil circuit side on the inlet side and to the oil pump on the outlet side. For example, the heat exchanger can be designed as a plate heat exchanger. This enables the heat exchanger to be integrated close to the pump on the suction side of the oil pump.

[0021] In a further development, it is provided that the cooling circuit is thermally coupled to the at least one heat-generating drive component via an additional heat exchanger. The additional heat exchanger serves to transfer the heat generated by the drive component to the coolant. For example, the additional heat exchanger can be designed as a heat sink which is in thermal contact with the heat-generating drive component and around which the coolant flows and / or through. In simplified terms, the additional heat exchanger is designed as a heat sink. The additional heat exchanger can be integrated into the inlet line of the heat exchanger. In other words, the outlet of the additional heat exchanger forms an inlet of the heat jacket and / or the heat exchanger. The additional heat exchanger allows the waste heat generated by the drive component to be very easily transported away by the coolant.

[0022] In a further implementation, it is provided that the heat-generating drive component is thermally coupled to the oil circuit section via a heat-conducting body. In particular, the heat-conducting body serves to dissipate the waste heat generated by the heat-generating drive component to the oil circuit section by heat conduction. The heat-conducting body is particularly preferably made of a heat-conducting material, such as aluminum, copper, etc. The heat transfer path particularly preferably runs from the heat-generating drive component via the heat-conducting body to the oil circuit section. The heat-conducting body preferably has, on the one hand, a contact surface with the drive component and, on the other hand, a contact surface with the oil circuit section. The contact surface can be understood as the contact surface of the heat-conducting body with the drive component and the oil circuit section.The heat-conducting body can be adapted as closely as possible to the heat-generating drive component and / or the oil circuit section to serve as a heat sink for the drive component. The heat-conducting body thus makes it possible to achieve good heat transfer or heat conduction from the drive component to the oil circuit section in a simple and cost-effective manner.

[0023] In one specific embodiment, it is provided that the heat-generating drive component is in direct mechanical contact with the oil pump and / or the oil reservoir via the heat-conducting body. Preferably, the oil pump, preferably the pump head, is in contact with the heat-conducting body via the contact surface. Alternatively or optionally additionally, the contact surface of the heat-conducting body is in contact with a wall of the oil reservoir or is formed by this. The contact surface can be more than 20%, preferably more than 40%, in particular more than 60% of the entire outer surface of the drive component and / or the oil pump or oil reservoir. Thus, a large part of the heat generated in the drive component can be dissipated via the contact surfaces. In addition, a direct mechanical thermal connection between the drive component and the oil circuit section is enabled.

[0024] In a specific embodiment, the oil reservoir is formed by an oil sump and / or an oil tank. In particular, if designed as a wet sump system, the oil circulation system can have an oil sump as the oil reservoir, wherein the oil pump sucks the oil directly from the oil sump via the suction line and pumps it to the oil supply point. The oil circulation section can be formed between the inlet of the oil sump and the outlet of the oil pump. For example, the heat-generating drive component can be thermally coupled to the oil sump and / or the oil pump. In particular, if designed as a dry sump system, the oil circulation system can have an oil sump and an oil tank as the oil reservoir, wherein an oil pump, in particular a suction pump, sucks the oil from the oil sump via the suction line and pumps it into the oil reservoir, and another oil pump, in particular a pressure pump, sucks the oil from the oil tank and pumps it to the oil supply point.The oil circuit section can be formed between the inlet of the oil sump and the outlet of the suction pump and / or between the inlet of the oil reservoir and the outlet of the pressure pump. In other words, the oil circuit section can be formed between the inlet of the oil sump and the outlet of the pressure pump. For example, the heat-generating drive component can be thermally coupled to the oil sump and / or the oil reservoir and / or the suction pump and / or the pressure pump.

[0025] In another specific embodiment, the at least one heat-generating drive component is formed by an electric drive component. In particular, the electric drive component is designed as an electric machine or an inverter (power electronics, motor control). Alternatively, however, the electric drive component can also be a voltage converter, such as a DC / DC converter, an on-board charger, such as an AC / DC converter, or an electrical energy storage device or a battery. Preferably, several or all of the electric drive components can be thermally coupled to the oil circuit section, preferably via the cooling circuit.

[0026] Another subject of the invention relates to an electric or hybrid vehicle with the drive system. In particular, the drive unit comprises an electric motor and / or an internal combustion engine as the heat-generating drive component. Furthermore, the drive unit can comprise an inverter and / or energy storage device as additional heat-generating drive components.

[0027] Further features, advantages, and effects of the invention will become apparent from the following description of preferred embodiments. In the following: Fig. 1 is a schematic representation of a drive system as a first embodiment of the invention; Fig. 2 an alternative version of the drive system in the same representation as in Fig. 1 shown; Fig. 3 another alternative version of the drive system in the same representation as in Fig. 1 shown.

[0028] The Fig. 1 to 3 each show a drive system 1 for a vehicle, for example, an electric or hybrid vehicle, in a highly schematic representation. The drive system 1 has a drive unit 2, which serves to generate and transmit a drive torque to at least one vehicle wheel of the vehicle. The drive unit 2 has one or more heat-generating drive components 3, which are preferably designed as an electrical drive component, such as an electric machine, an inverter, an electrical energy storage device, or the like.

[0029] Furthermore, the drive system 1 has an oil circuit 4, which serves to lubricate and / or cool the drive unit 2, in particular a rotating drive component, such as gear wheels, rotor, bearings, shafts, etc. For example, the oil is a transmission oil, with the oil circuit 4 serving to lubricate and / or cool a transmission (not shown). In principle, the heat-generating drive component 3 can also be a rotating drive component of the drive unit 2, e.g., a rotor of the electric machine. Alternatively, however, the heat-generating drive component 3 is a stationary drive component, e.g., a stator, power electronics, battery, etc.

[0030] The oil circuit 4 has at least one oil pump 5 and at least one oil reservoir 6, wherein the oil pump 5 pumps oil from the oil reservoir 6 to at least one oil supply point, not shown. For example, the oil circuit 4 forms a wet sump system, wherein the oil reservoir 6 is designed as an oil sump which is directly connected to the oil pump 5 via a suction line 7. In an alternative embodiment, the oil circuit 4 can also form a dry sump system, wherein the oil reservoir 6 is designed as an oil container which is directly connected to the oil pump 5, also referred to as a pressure pump, via the suction line 7. Optionally, but not shown, the oil circuit 4 designed as a dry sump system can have a further oil reservoir designed as an oil sump and a further oil pump designed as a suction pump, which pumps oil from the oil sump into the oil container.

[0031] During operation, the heat-generating drive component 3 generates waste heat 8, which is used to preheat the oil in the oil circuit 4. This enables earlier availability of the oil circuit 4 and thus ensures the lubrication and cooling functions at low temperatures. It is necessary to heat the oil as quickly as possible before or in the oil pump 5.

[0032] For this purpose, the heat-generating drive component 3 is thermally coupled to an oil circuit section 11 of the oil circuit 4, arranged between a reservoir inlet 9 of the oil reservoir 6 and a pump outlet 10 of the oil pump 5, in order to transfer the waste heat 8 to the oil. Thus, a heat transfer path 100 runs independently of the oil circuit 4 from the heat-generating drive component 3 directly to the oil circuit section 12, so that heat is transferred from the heat-generating drive component 3 to the oil circuit section 12.

[0033] As in the Fig. 1 and Fig. As shown in Figure 2, the drive system 1 has a cooling circuit 12 that is fluidly separated from the oil circuit 4 and configured to cool the heat-generating, in particular temperature-critical, drive component 3. The coolant flow 101 flows over the heat-generating drive component 3 and over the oil circuit section 11, with the coolant flow 101 transporting the waste heat 8 toward the oil circuit section 11. In other words, the heat transfer path 100 is defined by the coolant flow 101. For example, cooling water can be used as the coolant.

[0034] According to a Fig. In the embodiment shown in Figure 1, the heat-generating drive component 3 is thermally coupled to the oil reservoir 6 via a heat exchanger 13, through which the coolant flow 101 of the cooling circuit 12 flows. The heat exchanger 13 can be arranged within the oil reservoir 6 and / or integrated into a wall of the oil reservoir 6.

[0035] The cooling circuit 13 is thermally coupled to the heat-generating drive component 3 via an additional heat exchanger 14 and fluidly connected to the heat exchanger 13. The waste heat 8 is transferred to the cooling circuit 12 via the additional heat exchanger 14, transported away by the coolant flow 101 toward the oil reservoir 6, and transferred via the heat exchanger 13 to the oil contained in the oil reservoir 6, thereby preheating the oil within the oil reservoir 6 or upstream of the oil pump 5.

[0036] According to a Fig. In the alternative embodiment shown in Figure 2, the heat-generating drive component 3 is thermally coupled to the oil pump 5 via a heat jacket 15, through which the coolant flow 101 of the cooling circuit 12 flows. The oil pump 5 has a pump head 16 and a pump drive 17, wherein the heat jacket 15 at least partially or completely surrounds the pump head 16. The pump drive 17 can, for example, be an electrical or mechanical pump drive.

[0037] The cooling circuit 13 is thermally coupled to the heat-generating drive component 3 via the additional heat exchanger 14 and fluidly connected to the heat jacket 15. The waste heat 8 is transferred to the cooling circuit 12 via the additional heat exchanger 14, transported away by the coolant flow 101 toward the oil pump 6, and transferred via the heat exchanger 13 to the oil located in the pump head 16, thereby preheating the oil within the pump head 16 or in the oil pump 5.

[0038] According to a Fig.3, the heat-generating drive component 3 is thermally coupled to the oil reservoir 6 via a heat-conducting body 18, which is in direct mechanical contact with the heat-generating drive component 3 and the oil reservoir 6. For example, the heat-conducting body 18 is made of a thermally conductive metal, such as copper. The heat-conducting body 18 can be in surface contact, preferably over its entire surface, with the heat-generating drive component 3 and the oil reservoir 6. Thus, the heat transfer path 100 runs from the heat-generating drive component 3 via the heat-conducting body 18 directly to the oil reservoir 6. The waste heat 8 is transferred via the heat-conducting body 18 directly to the oil reservoir 6, thereby preheating the oil within the oil reservoir 6 or upstream of the oil pump 5. Reference symbol 1 drive system 2 drive unit 3 heat-generating drive components 4 Oil circuit 5 Oil pump 6 oil storage tanks 7 Suction line 8 Waste heat 9 Memory input 10 Pump outlet 11 Oil circuit section 12 Cooling circuit 13 heat exchangers 14 additional heat exchangers 15 thermal jacket 16 Pump head 17 Pump drive 18 heat conducting bodies 100 Heat transfer path 101 Coolant flow QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2018 209 340 B3

[0003]

Claims

[1] Drive system (1) for a vehicle, - with an electric drive unit (2) which has at least one heat-generating drive component (3), - with an oil circuit (4) for cooling and / or lubricating the drive unit (2), wherein the oil circuit (4) has at least one oil pump (5) and at least one oil reservoir (6), wherein the oil pump (5) is designed to pump oil from the oil reservoir (6) to at least one oil supply point in order to supply at least one drive component of the drive unit (2) with oil, characterized by that the heat-generating drive component (3) is thermally coupled to an oil circuit section (11) of the oil circuit (4) arranged between a storage inlet (9) of the oil reservoir (6) and a pump outlet (10) of the oil pump (6) in order to preheat the oil pumped by the oil pump (5). [2] Drive system (1) according to claim 1, characterized in that the heat-generating drive component (3) is thermally coupled to the oil circuit section (11) via a heat transfer path (100) formed independently and / or parallel to the oil circuit (4). [3] Drive system (1) according to claim 1 or 2, characterized by a cooling circuit (12) which is fluidically separated from the oil circuit (4) for cooling the at least one heat-generating drive component (3) by means of a coolant flow (101), wherein the heat-generating drive component (3) is thermally coupled to the oil circuit section (11) via the cooling circuit (4). [4] Drive system (1) according to claim 3, characterized by that the cooling circuit (12) is thermally coupled to the oil circuit section (11) downstream of the heat-generating drive component (3) with respect to the coolant flow (100). [5] Drive system (1) according to claim 3 or 4, characterized bythat the cooling circuit (12) is thermally coupled to the oil pump (5) via a heat jacket (15). [6] Drive system (1) according to claim 5, characterized by that the oil pump (5) has a pump drive (17) and a pump head (16), wherein the heat jacket (15) at least partially surrounds the pump head (16). [7] Drive system (1) according to one of claims 3 to 6, characterized by that the cooling circuit (12) is thermally coupled to the oil circuit section (11) via a heat exchanger (13). [8] Drive system (1) according to 7, characterized by that the heat exchanger (13) is thermally coupled to the oil reservoir (6). [9] Drive system (1) according to 7, characterized by that the heat exchanger (13) is integrated into a suction line (7) connecting the oil reservoir (6) and the oil pump (5). [10] Drive system (1) according to one of claims 2 to 8, characterized bythat the cooling circuit (12) is thermally coupled to the at least one heat-generating drive component (3) via a further heat exchanger (14). [11] Drive system (1) according to one of the preceding claims, characterized by that the heat-generating drive component (3) is thermally coupled to the oil circuit section (11) via a heat conducting body (18). [12] Drive system (1) according to claim 11, characterized by that the heat-generating drive component (3) is directly mechanically contacted with the oil pump (5) and / or the oil reservoir (6) via the heat conducting body (18). [13] Drive system (1) according to one of the preceding claims, characterized by that the oil reservoir (6) is formed by an oil sump and / or an oil container. [14] Drive system (1) according to one of the preceding claims, characterized by that the heat-generating drive component (3) is formed by an electrical drive component. [15] Electric or hybrid vehicle with the drive system (1) according to one of the preceding claims.

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