Self-adjusting oil cooler structure and electric drive management system

Abstract

The utility model provides a self-adjusting oil cooler structure and an electric drive management system.The self-adjusting oil cooler structure comprises an oil cooler assembly, the oil cooler assembly comprises cooling liquid channels and lubricating oil channels, and the cooling liquid channels and the lubricating oil channels are stacked into a plurality of layers in the first direction; the adjusting assembly comprises a push rod mechanism and a wax type temperature sensing element, the push rod mechanism is arranged to be distributed in the first direction and used for dividing the oil cooler assembly into a first part and a second part which are each provided with a plurality of lubricating oil channels, and the wax type temperature sensing element is connected with the push rod mechanism so that the wax type temperature sensing element can push the push rod mechanism to move in the first part when melted; and the number of the lubricating oil channels in the second part is adjusted. Heat exchange can be adjusted in real time according to actual requirements, and efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil cooler, in particular to a self-adjusting oil cooler structure and electric drive management system. BACKGROUND

[0002] At present, the oil-cooled pure electric electric drive mainly takes away the heat generated by the motor and shaft tooth during the operation of the electric drive through the oil cooler to adjust the temperature inside the electric drive. The oil is usually used to cool the motor and shaft tooth inside the oil-cooled electric drive, and then the hot oil exchanges heat with the cooling water on the hot side and the cold side of the oil cooler. At the outlet of the hot side of the oil cooler, the oil temperature drops, and the water temperature at the water outlet rises. The heat is transferred through the oil cooler. Therefore, in order to improve the efficiency of the electric drive, higher requirements are put forward for the oil cooler to adjust the heat exchange in real time. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present application is to provide a self-adjusting oil cooler structure and electric drive management system, which can adjust the heat exchange in real time according to the actual demand and improve the efficiency.

[0004] In the first aspect, the present application provides a self-adjusting oil cooler structure, comprising: an oil cooler assembly comprising a cooling liquid channel and a lubricating oil channel, the cooling liquid channel and the lubricating oil channel are stacked into several layers along a first direction; an adjusting assembly comprising a push rod mechanism and a wax type temperature sensing element, the push rod mechanism is configured to be distributed along the first direction, for separating the oil cooler assembly into a first part and a second part, each having a plurality of lubricating oil channels, and the wax type temperature sensing element is connected to the push rod mechanism, so that when it melts, it pushes the push rod mechanism to move in the first part, to adjust the number of lubricating oil channels located in the second part.

[0005] In the above implementation process, the wax type temperature sensing element is arranged on the push rod mechanism, the push rod mechanism is connected to the oil cooler assembly to separate the oil cooler assembly into a first part and a second part. Under normal temperature conditions, the lubricating oil in the several lubricating oil channels in the second part circulates normally, and the lubricating oil in the several lubricating oil channels in the first part does not participate in the circulation. When the temperature rises, the wax type temperature sensing element melts and its volume increases, thereby pressing the push rod mechanism and making it move, the number of lubricating oil channels in the second part increases, thereby increasing the heat exchange amount between the lubricating oil in the lubricating oil channel and the cooling liquid in the cooling liquid channel. When the temperature drops, the internal wax type temperature sensing element gradually returns to solid state, its volume decreases, and the push rod mechanism moves to the original position, the number of lubricating oil channels available for heat exchange decreases, thereby reducing the heat dissipation. The whole process can adjust the heat exchange of the oil cooler structure in real time according to the actual demand, and improves the efficiency.

[0006] In some embodiments, the lubricating oil channel located at the second part is configured as a heat exchange channel.

[0007] In the above implementation process, the wax temperature sensing element can switch between solid and liquid states according to the actual temperature, and then change the number of lubricating oil channels located at the second part through the movement of the push rod mechanism, thereby realizing adaptive adjustment of the heat dissipation amount.

[0008] In some embodiments, the push rod mechanism includes a push rod and a push rod housing, the push rod is arranged inside the push rod housing, and one side of the push rod is provided with the wax temperature sensing element.

[0009] In the above implementation process, the wax temperature sensing element and the push rod are located in the push rod housing, the wax temperature sensing element is in contact with the push rod, so that the wax temperature sensing element can change its form when affected by temperature, and at the same time, the push rod can move, thereby changing the number of lubricating oil channels located at the second part, and realizing adaptive adjustment of the heat dissipation amount.

[0010] In some embodiments, the push rod is provided with a first push rod body and a second push rod body, the first push rod body is connected to the second push rod body, and a part of the structure near the side of the second push rod is recessed to form a groove for accommodating the wax temperature sensing element.

[0011] In the above implementation process, the wax temperature sensing element is arranged in the groove, which facilitates the change of the form of the wax temperature sensing element in the push rod mechanism, and is conducive to the movement of the push rod, thereby adjusting the number of lubricating oil channels located at the second part, and realizing adaptive adjustment of the heat dissipation amount.

[0012] In some embodiments, the adjusting assembly further includes an elastic member, the elastic member is arranged inside the push rod housing at a position corresponding to the first part, and one end of the elastic member is in abutment with the push rod.

[0013] In the above implementation process, one end of the push rod is provided with an elastic member, and the push rod can reciprocate within a set range under the joint action of the elastic member and the wax temperature sensing element, which is conducive to adaptive adjustment of the heat dissipation amount and improves the performance of the product.

[0014] In some embodiments, one end of the push rod housing penetrates through one side of the first part away from the second part and extends to the outside of the first part. This is conducive to the fixation of the push rod housing, thereby ensuring stable movement of the push rod in the push rod housing and improving the accuracy of changing the number of lubricating oil channels for heat exchange.

[0015] In some embodiments, one end of the oil cooler assembly is provided with an oil inlet channel, which is connected to the lubricating oil channel, and the oil inlet channel is disposed in the second part.

[0016] In the above process, the oil cooler assembly is equipped with an oil inlet channel in the second part. The lubricating oil in the oil inlet channel first enters the lubricating oil channel in the second part. The regulating component can adjust the number of lubricating oil channels in the second part according to the temperature of the lubricating oil to achieve heat exchange of the lubricating oil.

[0017] In some embodiments, one end of the oil cooler assembly is further provided with an oil outlet channel, which is connected to the lubricating oil channel, and the oil outlet channel is disposed in the second part.

[0018] In the above process, the oil outlet channel is connected to the lubricating oil channel in the second part, which can export the lubricating oil after heat exchange, which is beneficial to the circulation of lubricating oil.

[0019] In some embodiments, the coolant passage and the lubricating oil passage are independent of each other, and the coolant passage is configured to exchange heat with the lubricating oil passage.

[0020] Secondly, this application also provides an electric drive management system, including a self-regulating oil cooler structure as described in any of the preceding claims.

[0021] Since the electric-driven thermal management system provided in the second aspect includes an oil cooler structure, the electric-driven thermal management system has all the technical effects of the oil cooler structure, which will not be elaborated here.

[0022] Other features and advantages of this application will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the above-described techniques of this application.

[0023] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the self-adjusting oil cooler provided in the embodiment of this application.

[0026] Figure Labels

[0027] 10. Oil cooler assembly; 101. Coolant passage; 102. Lubricating oil passage; 103. Oil inlet passage; 20. Adjustment assembly; 201. Wax-type temperature sensing element; 202. Push rod assembly; 203. Push rod housing; 204. Elastic element. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0029] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0030] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0031] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or a point connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0032] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0033] Example

[0034] Currently, motors in all-in-one electric drive systems are typically cooled by oil, which uses lubricating oil from the gearbox to cool the motor. However, since the lubricating oil temperature increases after cooling the motor, affecting the cooling effect, an oil cooler is needed to cool the lubricating oil flowing to the motor.

[0035] During the design process, the inventors discovered that oil coolers need to meet the most stringent heat dissipation requirements, but in actual use, the maximum heat dissipation requirement may not be needed. For traditional oil coolers, the coolant and the oil are constantly exchanging heat, resulting in a lower oil temperature in the electric drive, higher viscosity of the electric drive oil, increased oil churning loss, and reduced electric drive efficiency.

[0036] In view of this, such as Figure 1 As shown, in a first aspect, embodiments of this application provide a self-adjusting oil cooler structure, including: an oil cooler assembly 10, including a coolant channel 101 and a lubricating oil channel 102, wherein the coolant channel 101 and the lubricating oil channel 102 are stacked in several layers along a first direction; and an adjustment assembly 20, including a push rod mechanism and a wax-type temperature sensing element 201, wherein the push rod mechanism is configured to be distributed along the first direction for dividing the oil cooler assembly 10 into a first part and a second part, each having a plurality of the lubricating oil channels 102, and the wax-type temperature sensing element 201 is connected to the push rod mechanism so that when it melts, it pushes the push rod mechanism to move within the first part to adjust the number of the lubricating oil channels located in the second part.

[0037] For example, the oil cooler assembly 10 can be a commercially available structure. The coolant channel 101 and the lubricating oil channel 102 are staggered along the first direction, which includes but is not limited to the vertical direction. The coolant channel 101 is configured to contain coolant, and the lubricating oil channel 102 is configured to contain lubricating oil. After the lubricating oil enters the oil cooler assembly 10, it exchanges heat with the coolant and then flows out of the oil cooler assembly 10, thus achieving heat exchange for the lubricating oil.

[0038] It is understood that the wax-type temperature sensing element 201 is solid at room temperature. As the temperature rises, the wax-type temperature sensing element 201 will gradually melt, thereby pushing the push rod mechanism to move. Therefore, the working principle of the wax-type temperature sensing element 201 and the push rod mechanism can be understood as the working principle of the wax-type thermostat.

[0039] It should be noted that when the wax-type temperature sensing element 201 is in a solid state and the push rod mechanism is in the first position, we define this as the initial position. Then, when the temperature rises, the wax-type temperature sensing element 201 gradually melts and pushes the push rod mechanism to move away from the first position to the second position, where the height of the second position is higher than that of the first position. When the temperature drops, the wax-type temperature sensing element 201 gradually returns to a solid state, and the push rod mechanism moves in a direction closer to the first position. The final stopping position will not be lower than the first position (for example, it will stop at the first position).

[0040] In the above-mentioned process, a wax-type temperature sensing element 201 is provided on the push rod mechanism. The push rod mechanism is connected to the oil cooler assembly 10 to divide the oil cooler assembly 10 into a first part and a second part. Under normal temperature conditions, the lubricating oil in the lubricating oil channels 102 located in the second part circulates normally, while the lubricating oil in the lubricating oil channels 102 in the first part does not participate in circulation. When the temperature rises, the wax-type temperature sensing element 201 melts and its volume increases, thereby squeezing the push rod mechanism and causing it to move. The number of lubricating oil channels 102 in the second part increases, increasing the heat exchange area and thus increasing the heat exchange between the lubricating oil in the lubricating oil channels 102 and the coolant in the coolant channels 101. When the temperature drops, the internal wax-type temperature sensing element 201 gradually returns to a solid state, and its volume decreases accordingly. As a result, the push rod mechanism moves closer to its original position, reducing the number of lubricating oil channels 102 that can exchange heat, thereby reducing the heat dissipation. The entire process can adjust the heat exchange of the oil cooler structure in real time according to actual needs, thereby improving efficiency.

[0041] In some embodiments, the lubricating oil passage located in the second portion is configured as a heat exchange passage.

[0042] In the above process, the wax-type temperature sensing element 201 can switch between solid and liquid states according to the actual temperature, and then change the number of lubricating oil channels 102 in the second part by moving the push rod mechanism, so as to achieve adaptive adjustment of heat dissipation.

[0043] like Figure 1As shown, the push rod mechanism includes a push rod 202 and a push rod housing 203. The push rod 202 is disposed inside the push rod housing 203. The wax-type temperature sensing element 201 is disposed on one side of the push rod 202. For example, the push rod housing 203 is provided with a receiving cavity, which is configured to receive the push rod 202 and the wax-type temperature sensing element 201.

[0044] In the above process, the wax-type temperature sensing element 201 and the push rod 202 are both located in the push rod housing 203. The wax-type temperature sensing element 201 is in contact with the push rod 202, so that when the wax-type temperature sensing element 201 is affected by temperature, it changes its own shape and causes the push rod 202 to move, thereby changing the number of lubricating oil channels 102 in the second part and realizing adaptive adjustment of heat dissipation.

[0045] In some embodiments, the push rod 202 is provided with a first push rod body and a second push rod body, the first push rod body being connected to the second push rod body, and a portion of the structure of the first push rod body near the second push rod is recessed to form a groove for accommodating the wax-type temperature sensing element 201.

[0046] For example, the first push rod 202 and the second push rod 202 are an integral piece, the first push rod 202 is located at the upper end of the second push rod 202, and the shape of the first push rod 202 and the second push rod 202 includes but is not limited to cylindrical shape, and the first push rod 202 and the second push rod 202 are both configured to be distributed along the first direction.

[0047] In the above process, the wax-type temperature sensing element 201 is arranged in the groove, which facilitates the shape change of the wax-type temperature sensing element 201 in the push rod mechanism, which is conducive to the movement of the push rod 202, thereby adjusting the number of lubricating oil channels 102 in the second part and realizing adaptive adjustment of heat dissipation.

[0048] In some embodiments, the adjustment assembly 20 further includes an elastic element 204 disposed inside the push rod housing 203 at a position corresponding to the first portion. One end of the elastic element 204 abuts against the push rod member 202. The elastic element 204 includes, but is not limited to, a return spring. As the push rod member 202 moves along the direction of the first portion, the number of lubricating oil channels 102 located in the second portion increases, and the elastic element 204 is gradually compressed, which can provide kinetic energy for the subsequent push rod member 202 to return to the first position.

[0049] In the above process, one end of the push rod 202 is equipped with an elastic element 204. Under the combined action of the elastic element 204 and the wax-type temperature sensing element 201, the push rod 202 can move back and forth within a set range, which is conducive to adaptively adjusting the heat dissipation and improving the performance of the product.

[0050] In some embodiments, one end of the push rod housing 203 passes through the side of the first portion opposite to the second portion and extends to the outside of the first portion. This facilitates the fixation of the push rod housing 203, thereby ensuring stable movement of the push rod member 202 within the push rod housing 203 and improving the accuracy of changing the number of lubricating oil channels 102 used for heat exchange.

[0051] In some embodiments, one end of the oil cooler assembly 10 is provided with an oil inlet channel 103, which is connected to the lubricating oil channel 102, and the oil inlet channel 103 is disposed in the second part.

[0052] In the above implementation process, the oil cooler assembly 10 is provided with an oil inlet channel 103 in the second part. The lubricating oil in the oil inlet channel 103 first enters the lubricating oil channel 102 in the second part. The regulating assembly 20 can adjust the number of lubricating oil channels 102 in the second part according to the temperature of the lubricating oil to achieve heat exchange of the lubricating oil.

[0053] In some embodiments, one end of the oil cooler assembly 10 is further provided with an oil outlet channel, which is connected to the lubricating oil channel 102, and the oil outlet channel is disposed in the second part.

[0054] During the above process, the oil outlet channel is connected to the lubricating oil channel 102 in the second part, which can export the lubricating oil after heat exchange, which is beneficial to the circulation of lubricating oil.

[0055] In some embodiments, the coolant passage 101 and the lubricating oil passage 102 are independent of each other, and the coolant passage 101 is configured to exchange heat with the lubricating oil passage 102.

[0056] Secondly, this application also provides an electric drive management system, including the self-regulating oil cooler structure described above.

[0057] Since the electric-driven thermal management system provided in the second aspect includes an oil cooler structure, the electric-driven thermal management system has all the technical effects of the oil cooler structure, which will not be elaborated here.

[0058] In all embodiments of this application, "large" and "small" are relative terms, "more" and "less" are relative terms, and "upper" and "lower" are relative terms. The embodiments of this application will not elaborate further on the expression of such relative terms.

[0059] It should be understood that the phrases "in this embodiment," "in this application embodiment," or "as an optional implementation" throughout the specification mean that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in this embodiment," "in this application embodiment," or "as an optional implementation" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.

[0060] In the various embodiments of this application, it should be understood that the sequence number of each process does not necessarily imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0061] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

Claims

1. A self-regulating oil cooler structure, characterized in that, include: An oil cooler assembly includes a coolant channel and a lubricating oil channel, wherein the coolant channel and the lubricating oil channel are stacked in several layers along a first direction; An adjustment assembly includes a push rod mechanism and a wax-type temperature sensing element. The push rod mechanism is configured to be distributed along the first direction to divide the oil cooler assembly into a first part and a second part, each having a plurality of the lubricating oil channels. The wax-type temperature sensing element is connected to the push rod mechanism and, when it melts, pushes the push rod mechanism to move within the first part to adjust the number of the lubricating oil channels located in the second part.

2. The self-regulating oil cooler structure according to claim 1, characterized in that, The lubricating oil passage located in the second part is configured as a heat exchange passage.

3. The self-regulating oil cooler structure according to claim 1, characterized in that, The push rod mechanism includes a push rod component and a push rod housing. The push rod component is disposed inside the push rod housing, and the wax-type temperature sensing element is disposed on one side of the push rod component.

4. The self-regulating oil cooler structure according to claim 3, characterized in that, The push rod component is configured with a first push rod body and a second push rod body. The first push rod body is connected to the second push rod body, and a portion of the structure of the first push rod body near the second push rod is recessed to form a groove for accommodating the wax-type temperature sensing element.

5. The self-regulating oil cooler structure according to any one of claims 3 or 4, characterized in that, The adjustment assembly further includes an elastic element disposed inside the push rod housing at a position corresponding to the first part, and one end of the elastic element abuts against the push rod.

6. The self-regulating oil cooler structure according to claim 3, characterized in that, One end of the push rod housing passes through the first part on the side opposite to the second part and extends to the outside of the first part.

7. The self-regulating oil cooler structure according to claim 1, characterized in that, One end of the oil cooler assembly is provided with an oil inlet channel, which is connected to the lubricating oil channel, and the oil inlet channel is located in the second part.

8. The self-regulating oil cooler structure according to claim 7, characterized in that, One end of the oil cooler assembly is also provided with an oil outlet channel, which is connected to the lubricating oil channel, and the oil outlet channel is located in the second part.

9. The self-regulating oil cooler structure according to claim 1, characterized in that, The coolant passage and the lubricating oil passage are independent of each other, and the coolant passage is configured to exchange heat with the lubricating oil passage.

10. An electric drive management system, characterized in that, Includes the self-regulating oil cooler structure as described in any one of claims 1-9.

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