Capacitance and filtering integrated double-sided oil cooling heat dissipation power device
By employing a dual-sided oil-cooled power device with integrated capacitors and filters in the automotive cooling system, the problem of water-cooled radiators freezing in cold regions has been solved, achieving efficient heat transfer and system stability, and improving engine performance.
Patent Information
- Application Number
- CN202423065106.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-11
AI Technical Summary
In existing automotive cooling systems, water-cooled radiators are prone to freezing in cold regions, which can cause the cooling system structure to crack, reducing its lifespan. Furthermore, water-cooling media has low heat transfer efficiency at high temperatures, affecting engine performance.
The power device employs a double-sided oil-cooled design with integrated capacitors and filters. By setting oil chambers and heat dissipation modules at both ends of the capacitor casing, it utilizes cooling oil for heat dissipation. It features a high degree of integration, and the power module is in full contact with the cooling oil, achieving simultaneous heat dissipation on both sides.
It improves heat dissipation efficiency, avoids the impact of coolant overflow on the electrical performance of internal electronic control components, and enhances the system's thermal balance capability and operating efficiency.
Smart Images
Figure CN223681380U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a heat dissipation power device technical field, concretely relates to a double -sided oil -cooling heat dissipation power device of integrated capacitance, filtering. BACKGROUND
[0002] According to the investigation shows, the generation of vehicle engine failure, 50% all come from the automobile cooling system. And 70% of cooling system failure, is due to the rust and the scale of the cooling liquid condensation in the radiator inside produce, from the volume structure, the cooling system occupies one third of the whole engine, when the engine operation process, the automobile parts need to absorb heat constantly under the influence of combustion gas and friction, these heat must be diffused to the atmosphere at the same speed with the heat absorption process, to achieve the relative balance, maintain the given working temperature of automobile motor. Therefore, the advantages and disadvantages of cooling medium will directly affect the overall performance of automobile engine.
[0003] The existing more common cooling medium habit or rely on containing water cooling liquid, the characteristics of water have high freezing point, low boiling point, the water vapor layer that its produces will hinder the heat conduction, the high temperature that produces when the automobile works, the heat will not be transmitted; and the characteristics of high freezing point will lead to in the climate high cold area, cooling liquid extremely easy to freeze, cause the cooling system structure to burst, make the whole cooling system life greatly reduce. CONTENT
[0004] The utility model aims at providing a double -sided oil -cooling heat dissipation power device of integrated capacitance, filtering, the power device replaces the conventional water -cooling heat dissipation through oil -cooling heat dissipation, and the heat balance ability is more sensitive, avoids the electrical performance influence that cooling liquid overflow produces to the internal device of electric control, improves the heat dissipation efficiency.
[0005] In order to realize the above -mentioned purpose, the utility model provides a double -sided oil -cooling heat dissipation power device of integrated capacitance, filtering, the power device includes:
[0006] Thin film capacitor;
[0007] Capacitor shell, the capacitor shell is set in the outside of thin film capacitor, and the opposite two ends of capacitor shell are equipped with first oil cavity;
[0008] Heat dissipation module, set up in the side wall of capacitor shell, and the inside of heat dissipation module is provided with second oil cavity, and the two ends of second oil cavity are communicated with the same end of two first oil cavity respectively;
[0009] Power module, set up in the inside of second oil cavity;
[0010] Driving module, set up in the bottom of capacitor shell, and driving module is connected with power module;
[0011] A filtering module is arranged inside the capacitor shell and connected with the film capacitor.
[0012] Optionally, the capacitor shell further comprises a water inlet and a water outlet arranged at opposite ends of the capacitor shell respectively and connected with the first oil cavity for inputting and outputting the cooling oil.
[0013] Optionally, the heat dissipation module comprises an upper cover substrate and a lower cover substrate, and the upper cover substrate and the lower cover substrate are plastic parts made of PPS.
[0014] Optionally, the heat dissipation module further comprises a sealing ring base arranged at the connection between the first oil cavity and the second oil cavity for sealing the capacitor shell.
[0015] Optionally, a bowl-shaped plug is further arranged in the capacitor shell and arranged at the water inlet and the water outlet for plugging the capacitor shell to prevent the cooling oil from leaking out.
[0016] Optionally, a positioning pin opening is arranged at the side of the driving module for positioning and fixing the capacitor shell.
[0017] Optionally, the overall topology of the filtering module is a CLC structure.
[0018] Optionally, the filtering module comprises:
[0019] a power taking copper bar connected with the film capacitor;
[0020] a grounding copper bar connected with the capacitor shell.
[0021] Through the above technical solution, the utility model provides a double-sided oil-cooled heat dissipation power device integrated with a capacitor and a filter, the capacitor shell is sleeved outside the film capacitor, the first oil cavity is arranged at opposite ends of the capacitor shell, the heat dissipation module is arranged on the side wall of the capacitor shell, the second oil cavity is arranged in the heat dissipation module, the two ends of the second oil cavity are communicated with the same end of the two first oil cavities, the power module is arranged in the second oil cavity, the driving module is arranged at the bottom of the capacitor shell, the driving module is connected with the power module, the filtering module is arranged in the capacitor shell, and the filter capacitor is connected with the film capacitor. The power device has high integration degree, facilitates the control and assembly of materials, reduces the cost, replaces the conventional water-cooled heat dissipation by oil-cooled heat dissipation, has more sensitive heat balance capacity, avoids the electrical performance influence of the cooling liquid overflow on the internal devices of the electric control, integrates the power module in the heat dissipation module, makes the power module fully contact with the cooling oil, achieves the effect of double-sided heat dissipation, greatly improves the heat dissipation capacity, and effectively improves the working efficiency of the system. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 is a top view of the integrated capacitor and filter double-sided oil-cooled heat dissipation power device according to an embodiment of the present application;
[0023] Figure 2 is a schematic diagram of the integrated capacitor and filter double-sided oil-cooled heat dissipation power device according to an embodiment of the present application;
[0024] Figure 3 is a schematic diagram of the integrated capacitor and filter double-sided oil-cooled heat dissipation power device according to an embodiment of the present application;
[0025] Figure 4 is a sectional view of the integrated capacitor and filter double-sided oil-cooled heat dissipation power device according to an embodiment of the present application;
[0026] Figure 5 is a bottom view of the integrated capacitor and filter double-sided oil-cooled heat dissipation power device according to an embodiment of the present application;
[0027] Figure 6 is a schematic diagram of the filter module according to an embodiment of the present application.
[0028] BRIEF DESCRIPTION OF DRAWINGS
[0029] 101, thin film capacitor 2, power module
[0030] 3, heat dissipation module 4, driving module
[0031] 5, fastening bolt 6, filter module
[0032] 102, capacitor shell 103, water inlet
[0033] 104, water outlet 301, upper cover substrate
[0034] 302, lower cover substrate 303, bowl-shaped plug
[0035] 304, sealing ring base 601, large-capacity Y capacitor
[0036] 602, small-capacity Y capacitor 603, large-capacity X capacitor
[0037] 604, small-capacity X capacitor 605, ground copper bar
[0038] 606, power copper bar 607, ferrite
[0039] 7, first oil cavity 8, second oil cavity DETAILED DESCRIPTION
[0040] The specific implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiments of the present application, and is not used to limit the embodiments of the present application.
[0041] In the embodiments of the present application, unless otherwise stated, the orientation words such as "upper", "lower", "top", "bottom" are generally used for the direction shown in the drawings or the position relationship between the components in the vertical, perpendicular or gravity direction.
[0042] In addition, if the present application has a description of "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.
[0043] As shown in Figure 1 is a top view of a double-sided oil-cooled heat dissipation power device integrated with a capacitor and a filter according to an embodiment of the present application. As shown in Figure 2 is a schematic diagram of a double-sided oil-cooled heat dissipation power device integrated with a capacitor and a filter according to an embodiment of the present application. As shown in Figure 3 is a schematic diagram of a double-sided oil-cooled heat dissipation power device integrated with a capacitor and a filter according to an embodiment of the present application. As shown in Figures 1 to 3 , the power device can include a thin film capacitor 101, a capacitor shell 102, a heat dissipation module 3, a power module 2, a driving module 4 and a filter module 6. Specifically, in the Figure 1In the middle, in order to let the cold area oil to each module for heat dissipation, the capacitor shell 102 is sleeved on the outside of the film capacitor 101, the capacitor shell 102 is provided with the first oil cavity 7 at the opposite ends, so that the cooling oil flows in the first oil cavity 7, and the film capacitor 101 is cooled, the side wall of the capacitor shell 102 is provided with the heat dissipation module 3, and the heat dissipation module 3 is provided with the second oil cavity 8 in the inside, the two ends of the second oil cavity 8 are respectively communicated with the same end of the two first oil cavities 7, which is different from the conventional double-sided water cooling structure. Because of the insulation performance of the cooling oil, the power module 2 can be placed in the heat dissipation module 3, so that the heat exchange efficiency reaches the best value, so that the cooling oil flows through the film capacitor 101 and then flows through the heat dissipation module 3, and the power module 2 is cooled. The driving module 4 is arranged at the bottom of the capacitor shell 102, and the driving module 4 is connected with the power module 2. The filter module 6 is arranged in the capacitor shell 102, and the filter capacitor is connected with the film capacitor 101, which is used for inhibiting the high-voltage direct-current system direct-current side harmonic.
[0044] In the embodiment, the capacitor shell 102 further comprises a water inlet 103 and a water outlet 104, which are respectively arranged at the opposite ends of the capacitor shell 102 and are connected with the first oil cavity 7, for inputting and outputting the cooling oil. The number of power modules 2 can be selected according to different voltage platforms. In the high-voltage platform, the power modules 2 are symmetrically arranged on the two sides of the capacitor shell 102; in the low-voltage platform, the power modules 2 are only placed on one side of the capacitor shell 102; wherein the heat dissipation module 3 is composed of an upper cover substrate 301 and a lower cover substrate 302, the two heat dissipation substrates are plastic parts, and the material can be PPS. The two heat dissipation substrates are connected and fixed by laser welding. When assembling the whole heat dissipation module 3, according to the assembly sequence, the power module 2 is laser welded to the upper cover substrate 301, and then the lower cover substrate 302 is laser welded to the lower cover substrate 302. The exposed position of the power module 2 and the heat dissipation substrate is filled with soldering, so as to prevent pollution caused by leakage of the cooling oil. After the heat dissipation module 3 is assembled, it is locked to one side or both sides of the capacitor shell 102 by fastening bolts 5.
[0045] In this embodiment, in order to prevent the cooling oil in the first oil cavity 7 from leaking when flowing to the second cavity, the heat dissipation module 3 further comprises a sealing ring base 304 arranged at the connection between the first oil cavity 7 and the second oil cavity 8, for sealing the capacitor housing 102, so that the internal sealing ring of the sealing ring base 304 and the capacitor housing 102 achieve end face sealing. A bowl-shaped plug 303 is further arranged in the capacitor housing 102, arranged at the water inlet 103 and the water outlet 104, for plugging the capacitor housing 102 to prevent the cooling oil from leaking. The cooling oil first enters through the water inlet 103, first flows through the capacitor housing 102 inside to exchange heat with the heat generating devices such as the core of the film capacitor 101 and the heat dissipation copper bar, to achieve capacitor heat dissipation; then flows through the heat dissipation module 3 to dissipate heat for the power module 2; and finally flows out from the water outlet 104 to form a complete cooling system loop. Details can be as shown in Figure 4 .
[0046] In this embodiment, the drive module 4 side is provided with a positioning pin opening for positioning and fixing with the capacitor housing 102. After being fixed, the drive module 4 is welded and fixed with the pins of the power module 2 inside the heat dissipation module 3. Details can be as shown in Figure 5 .
[0047] In this embodiment, in order to better suppress the ripple noise, improve the power signal quality and protect the subsequent circuit, the filter module 6 has a CLC structure as a whole to suppress the harmonics on the DC side of the high-voltage direct current transmission system. The filter module 6 comprises a group of large-capacity Y capacitors 601, a group of small-capacity Y capacitors 602, a large-capacity X capacitor 603, a small-capacity X capacitor 604, two groups of grounding copper bars 605, a group of power taking copper bars 606, and a ferrite 607. The filter module 6 shares a group of positive and negative copper bars with the film capacitor 101, the grounding copper bars 605 are welded on the capacitor housing 102, and then grounded through the capacitor housing 102; the power taking copper bars 606 are welded on the positive and negative terminals inside the capacitor module 101, and power is taken through the bus current input and output. After the whole filter module 6 is welded, the core, positive and negative copper bars inside the film capacitor 101 are filled together. The filter module 6 can be as shown in Figure 6 .
[0048] Through the above technical scheme, the utility model provides a kind of integrated capacitor, filter's double-sided oil cooling heat dissipation power device, by the capacitor shell 102 is set in the outside of thin film capacitor 101, first oil cavity 7 is set in the opposite ends of capacitor shell 102, heat dissipation module 3 is arranged in the side wall of capacitor shell 102, and second oil cavity 8 is arranged in the inside of heat dissipation module 3, the same end of two first oil cavities 7 is communicated with the two ends of second oil cavity 8 respectively, power module 2 is arranged in the inside of second oil cavity 8, drive module 4 is arranged in the bottom of capacitor shell 102, drive module 4 is connected with power module 2, filter module 6 is arranged in the inside of capacitor shell 102, filter capacitor is connected with thin film capacitor 101.The power device is higher in degree of integration, and the control and assembly of material are facilitated, and cost is reduced simultaneously, oil cooling heat dissipation is replaced by conventional water cooling heat dissipation, and heat balance capacity is more sensitive, avoids the electrical performance influence of cooling liquid overflow to electric control internal device, integrates power module 2 in the inside of heat dissipation module 3, makes it and cooling oil contact fully, reaches the effect of two sides heat dissipation simultaneously, improves heat dissipation capacity, effectively improves the working efficiency of system.
[0049] The preferred embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to this. Within the technical concept range of the utility model, the technical scheme of the utility model can be subjected to various simple modifications. Various possible combination modes are not described again by the utility model in order to avoid unnecessary repetition, including that various specific technical features are combined in any suitable mode. But these simple modifications and combinations should also be regarded as the disclosed content of the utility model, and all belong to the protection range of the utility model.
Claims
1. An integrated capacitive, filtered, double-sided, oil-cooled, heat-sinking power device, characterized in that, The power device comprises: a thin film capacitor; a capacitor shell, which is sleeved outside the thin film capacitor, and opposite ends of the capacitor shell are provided with first oil cavities; a heat dissipation module, which is arranged on a side wall of the capacitor shell, and an inner portion of the heat dissipation module is provided with a second oil cavity, and opposite ends of the second oil cavity are respectively communicated with the same end of the two first oil cavities; a power module, which is arranged in the inner portion of the second oil cavity; a driving module, which is arranged at the bottom of the capacitor shell, and the driving module is connected with the power module; a filter module, which is arranged in the inner portion of the capacitor shell, and the filter module is connected with the thin film capacitor.
2. The power device of claim 1, wherein, The capacitor shell further comprises a water inlet and a water outlet, which are respectively arranged at opposite ends of the capacitor shell, are connected with the first oil cavities, and are used for inputting and outputting cooling oil.
3. The power device of claim 1, wherein, The heat dissipation module comprises an upper cover substrate and a lower cover substrate, and the upper cover substrate and the lower cover substrate are plastic parts and are made of PPS.
4. The power device of claim 1, wherein, The heat dissipation module further comprises a sealing ring base, which is arranged at the connection position of the first oil cavity and the second oil cavity, and is used for sealing the capacitor shell.
5. The power device of claim 2, wherein, The capacitor shell further comprises a bowl-shaped plug, which is arranged at the water inlet and the water outlet, is used for plugging the capacitor shell, and prevents the cooling oil from leaking out.
6. The power device of claim 1, wherein, The driving module is provided with a positioning pin opening at a side edge, and is used for positioning and fixing the capacitor shell.
7. The power device of claim 1, wherein, The filter module has a CLC structure.
8. The power device of claim 1, wherein, The filter module comprises: a power copper bar, which is connected with the thin film capacitor; and a grounding copper bar, which is connected with the capacitor shell.