Lightweight thermal management system air conditioner compressor vibration reduction support

Abstract

The invention discloses a lightweight thermal management system air conditioner compressor vibration reduction support, and relates to the technical field of automobile thermal management systems, the vibration reduction support comprises a connecting support, a vibration reduction bushing and a connecting bolt, the main body of the connecting support is injection-molded by a plastic material, and the connecting support is used for providing a supporting structure. The density of the connecting support made of plastic is far lower than that of metal, and the connecting support has excellent acoustic damping performance, so that the problems that the metal material is large in density, heavy in weight and low in modal frequency are directly solved, meanwhile, the vibration reduction bush is arranged on the connecting support, the compressor is fixed by penetrating the connecting bolt through the bush, and the vibration reduction effect is good. High-frequency vibration and transient impact generated when the compressor works are subjected to first-stage attenuation on a transmission path through the vibration reduction lining, and then second-stage structure energy consumption is conducted through the high-damping plastic connecting support body, so that the high-frequency vibration isolation capacity of a system is greatly improved; and the abnormal sound of howling generated when the vibration is transmitted to an electric drive assembly and a cab is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of automotive thermal management system technology, and in particular to a lightweight thermal management system air conditioning compressor vibration damping bracket. Background Technology

[0002] The air conditioning compressor is one of the core components of a vehicle's thermal management system. The vibrations it generates during operation are transmitted to the vehicle body and electric drive assembly through its mounting bracket, directly affecting the vehicle's NVH (noise, vibration, and harshness) performance. To ensure reliable compressor operation and reduce vibration transmission, a dedicated vibration damping bracket is typically designed. Vibration isolation and noise reduction are achieved through the cooperation of the bracket body and rubber bushings. Currently, existing air conditioning compressor vibration damping brackets in the industry mainly adopt stamped sheet metal structures or die-cast aluminum structures, such as... Figure 3 As shown. This type of bracket utilizes the high rigidity of metallic materials to reliably support the compressor body. This technical solution has been maturely applied in the field of traditional fuel vehicles, and can effectively isolate low-frequency and mid-frequency (usually below 300Hz) vibration excitation generated by engine operation, meeting the NVH performance requirements under normal operating conditions.

[0003] However, with the rapid development of new energy vehicles and the increasing prevalence of electric air conditioning compressors, the technical shortcomings of existing metal vibration damping brackets are becoming increasingly apparent. Unlike traditional fuel vehicles, new energy electric compressors are characterized by high-speed operation and frequent start-stop cycles: high speeds result in high-frequency vibrations (typically reaching 500Hz-2000Hz), and frequent start-stop cycles lead to increased transient impacts, accompanied by electromagnetic excitation from the motor. Existing stamped sheet metal and die-cast aluminum brackets, due to their high metal density (resulting in generally heavy bracket assemblies) and low modal frequencies (typically below 350Hz), are unable to effectively isolate these high-frequency vibrations. Consequently, vibrations are easily transmitted through the brackets to the electric drive assembly and the cab, producing whistling noises. Summary of the Invention

[0004] This invention provides a lightweight thermal management system air conditioning compressor vibration damping bracket, which can solve the problem that existing stamped sheet metal and die-cast aluminum brackets are difficult to effectively isolate the above-mentioned high-frequency vibrations due to the high density of the metal material and the low modal frequency. As a result, the vibrations are easily transmitted to the electric drive assembly and the cab through the bracket, causing howling noises.

[0005] A lightweight thermal management system air conditioning compressor vibration damping bracket includes a connecting bracket, a vibration damping bushing, and connecting bolts. The main body of the connecting bracket is injection molded from plastic material to provide a support structure. The vibration damping bushing is disposed on the connecting bracket to connect with the compressor and dampen vibration. The connecting bolts pass through the vibration damping bushing to fix the compressor to the connecting bracket.

[0006] The present invention provides a lightweight thermal management system air conditioning compressor vibration damping bracket, which, compared with the prior art, has, but is not limited to, the following beneficial effects: The lightweight thermal management system's air conditioning compressor vibration damping bracket uses a plastic connecting bracket with a density far lower than that of metal and excellent acoustic damping performance. This directly solves the problems of high density, heavy weight, and low modal frequency associated with metal materials. Simultaneously, a vibration damping bushing is installed on the connecting bracket, and the compressor is fixed in place by connecting bolts passing through the bushing. This ensures that the high-frequency vibrations and transient impacts generated during compressor operation are first attenuated by the vibration damping bushing, and then further dissipated by the high-damping plastic connecting bracket body. This significantly improves the system's high-frequency vibration isolation capability and effectively prevents vibrations from being transmitted to the electric drive assembly and cab, thus avoiding howling noises.

[0007] Furthermore, the connecting bracket is provided with a grid-like hollowed-out reinforcing rib structure. The grid-like hollowed-out reinforcing rib includes reinforcing ribs distributed in a grid pattern in the stress path area of ​​the connecting bracket, and grid-like hollowed-out areas formed by the reinforcing ribs. The grid-like hollowed-out areas are located in the non-stress area of ​​the connecting bracket.

[0008] Furthermore, the connecting bracket has a metal insert pre-embedded at the bolt connection position, and the metal insert is integrally formed with the plastic body through an insert injection molding process.

[0009] Furthermore, the vibration damping bushing includes a long bushing and a short bushing, the axial length of the long bushing is greater than the axial length of the short bushing, the long bushing is disposed at two main force-bearing points on the compressor, and the short bushing is disposed at auxiliary support points on the compressor.

[0010] Furthermore, the long bushing includes a first rubber body and a long inner core. The first rubber body is vulcanized and covers the outer periphery of the long inner core. The outer circumferential surface of the first rubber body is directly interference-fitted with the mounting hole of the connecting bracket.

[0011] Furthermore, the short bushing includes a second rubber body and a short inner core. The second rubber body is vulcanized and covers the outer periphery of the short inner core. The outer circumferential surface of the second rubber body is directly interference-fitted with the mounting hole of the connecting bracket.

[0012] Furthermore, the metal insert includes three round hole inserts and one elliptical hole insert, wherein the major axis of the elliptical hole insert is arranged along the assembly tolerance accumulation direction to absorb the assembly position deviation between the connecting bracket and the compressor.

[0013] Furthermore, it also includes at least three limiting plates, which are thin-walled metal stamping parts. The limiting plates are disposed on the outside of the connecting bracket and fixed by connecting bolts, and are used to limit the excessive axial and radial displacement of the vibration damping bushing under extreme working conditions.

[0014] Furthermore, the plastic material is reinforced polyamide or long glass fiber reinforced polypropylene, with a glass fiber content of 30%-50% by mass.

[0015] Furthermore, the core material of the metal insert and the vibration damping bushing is aluminum alloy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a vibration damping bracket for an air conditioning compressor in a lightweight thermal management system according to an embodiment of the present invention. Figure 2 This is a cross-sectional view of a vibration damping bracket for an air conditioning compressor in a lightweight thermal management system according to an embodiment of the present invention. Figure 3 This is a structural schematic diagram of an existing air conditioner compressor vibration damping bracket; Figure 4 for Figure 1 Schematic diagram of the middle connecting bracket; Figure 5 for Figure 2 Schematic diagram of the structure of the medium-length bushing; Figure 6 for Figure 2 A schematic diagram of the structure of the medium and short bushing.

[0017] Explanation of reference numerals in the attached figures: 1. Connecting bracket; 2. Vibration damping bushing; 3. Connecting bolt; 4. Reinforcing rib; 5. Grid mesh cutout; 6. Metal insert; 7. Mounting hole; 8. Limiting plate; 21. Long bushing; 22. Short bushing; 61. Round hole insert; 62. Elliptical hole insert; 211. First rubber body; 212. Long inner core; 221. Second rubber body; 222. Short inner core. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0019] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] It should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, parts, or groups of features, integers, steps, or parts.

[0023] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0024] like Figure 1-3 As shown in the figure, a lightweight thermal management system air conditioning compressor vibration damping bracket provided by an embodiment of the present invention includes a connecting bracket 1, a vibration damping bushing 2, and a connecting bolt 3. The main body of the connecting bracket 1 is injection molded from plastic material and is used to provide a support structure. The vibration damping bushing 2 is disposed on the connecting bracket 1 and is used to connect with the compressor and dampen vibration. The connecting bolt 3 passes through the vibration damping bushing 2 to fix the compressor to the connecting bracket 1.

[0025] In this embodiment, by using a plastic connecting bracket 1, which has a much lower density than metal and excellent acoustic damping performance, the problems of high density, heavy weight, and low modal frequency of metal materials are directly solved. At the same time, the vibration damping bushing 2 is set on the connecting bracket 1, and the compressor is fixed by the connecting bolt 3 passing through the bushing. This allows the high-frequency vibration and transient impact generated by the compressor during operation to be attenuated firstly by the vibration damping bushing 2, and then dissipated by the high-damping plastic connecting bracket 1 body. This significantly improves the high-frequency vibration isolation capability of the system and effectively prevents the vibration from being transmitted to the electric drive assembly and the cab, thus avoiding the generation of howling noises.

[0026] Among them, such as Figure 3 As shown, this is an existing metal vibration damping bracket. The connecting bracket 1 made of plastic material used in this solution can achieve a weight reduction of 50%-80%.

[0027] Like 1 and Figure 2 As shown, the connecting bracket 1 is provided with a grid-like hollow reinforcing rib structure. The grid-like hollow reinforcing rib includes reinforcing ribs 4 distributed in a grid pattern in the stress path area of ​​the connecting bracket 1, and grid hollow 5 formed by the reinforcing ribs 4. The grid hollow 5 is located in the non-stress area of ​​the connecting bracket 1.

[0028] In this embodiment, the reinforcing ribs 4, which are distributed in a grid pattern in the stress path area of ​​the connecting bracket 1, can accurately bear and disperse the load transmitted to the connecting bracket 1 when the air conditioner compressor is working. This effectively enhances the overall rigidity and structural strength of the connecting bracket 1, and prevents the connecting bracket 1 from deforming or being damaged due to the use of plastic material and the need to adapt to the transient impact generated by the high speed and frequent start-stop of the new energy electric compressor, thus ensuring the reliability of the bracket support. The grid cutouts 5 formed by the reinforcing ribs 4 and located in the non-stress area of ​​the connecting bracket 1 significantly reduce the amount of plastic material used in the connecting bracket 1 without affecting the stress performance of the connecting bracket 1, further optimizing the lightweight effect of the connecting bracket 1, and further reducing the weight of the bracket assembly in conjunction with the plastic main body material.

[0029] Specifically, the mesh-like hollow structure can also help improve the modal frequency of the connecting bracket 1, make up for the deficiency of the low modal frequency of the existing metal bracket, help the reinforcing rib 4 to better cooperate with the damping bushing 2 to attenuate high-frequency vibration, reduce vibration transmission, and thus help improve the NVH performance of the whole vehicle. It takes into account the functions of lightweight, high strength and vibration isolation, and is suitable for the working requirements of the new energy electric air conditioning compressor.

[0030] Like 2 and Figure 4 As shown, the connecting bracket 1 has a metal insert 6 pre-embedded at the bolt connection position. The metal insert 6 is integrally formed with the plastic body through an insert injection molding process.

[0031] In this embodiment, the bolt connection position is the core stress-bearing part connecting the connecting bracket 1 and the compressor. The pre-embedded metal insert 6 can directly bear the bolt tightening force and the vibration load transmitted by the compressor during operation, avoiding the plastic body from directly contacting the bolt and causing wear, deformation or even cracking. This greatly improves the structural strength and durability of the bolt connection position of the connecting bracket 1 and ensures the stability of the connection.

[0032] Specifically, the metal insert 6 is integrally molded with the plastic body using an insert injection molding process, ensuring a tight fit and no assembly gaps. This effectively reduces vibration transmission loss at the connection point, avoids vibration amplification caused by gaps, and helps the damping bushing 2 better attenuate high-frequency vibrations, further improving the overall NVH performance of the vehicle. In addition, the integrally molded structure eliminates the need for additional assembly processes, simplifying the production process of the connecting bracket 1, improving production efficiency, and avoiding the potential for loosening or falling off of the metal insert 6 during later assembly. This ensures the overall stability of the connecting bracket 1, making it suitable for the demanding working conditions of high-speed, frequent start-stop operations of new energy electric air conditioning compressors, and indirectly extending the service life of the damping bracket assembly.

[0033] Like 1 and Figure 2As shown, the vibration damping bushing 2 includes a long bushing 21 and a short bushing 22. The axial length of the long bushing 21 is greater than the axial length of the short bushing 22. The long bushing 21 is set at the two main force-bearing points on the compressor, and the short bushing 22 is set at the auxiliary support points on the compressor.

[0034] In this embodiment, the axial length of the long bushing 21 is greater than that of the short bushing 22, and the long bushing 21 is corresponding to the two main stress points on the compressor. The longer axial length allows for a larger rubber contact area and a longer damping stroke of the long bushing 21, enabling it to more efficiently absorb and attenuate the vibration load transmitted from the main stress points, especially the high-frequency vibration generated by the high-speed operation of the new energy electric compressor and the transient impact caused by frequent start-stop cycles, thus preventing excessive transmission of vibration from the main stress points to the connecting bracket 1. The short bushing 22 is located at the auxiliary support point on the compressor. Its shorter axial length can reduce material usage and optimize the overall lightweight effect while ensuring the stability of the auxiliary support. At the same time, it can help absorb the slight vibration of the auxiliary support point, forming a synergistic damping effect with the long bushing 21, ensuring that the overall vibration of the compressor can be effectively attenuated.

[0035] Specifically, by using a combination of long bushing 21 and short bushing 22 in the vibration damping bushing 2, and combining the size difference between the two with precise installation position allocation, it can be specifically adapted to the stress characteristics of the compressor, significantly improving the vibration damping effect and support reliability. This reasonable combination of long and short bushings not only achieves precise matching of vibration damping effect, but also takes into account the need for lightweighting, avoiding the problems of single-specification bushings being unable to adapt to different stress points, uneven vibration damping effect, or weight redundancy. It further ensures the stability of the connection between the connecting bracket 1 and the compressor, helps to improve the NVH performance of the whole vehicle, and adapts to the harsh working conditions of the new energy electric air conditioning compressor.

[0036] Like 5 and Figure 6 As shown, the long bushing 21 includes a first rubber body 211 and a long inner core 212. The first rubber body 211 is vulcanized and covers the outer periphery of the long inner core 212. The outer circumferential surface of the first rubber body 211 is directly press-fitted with the mounting hole 7 of the connecting bracket 1. The short bushing 22 includes a second rubber body 221 and a short inner core 222. The second rubber body 221 is vulcanized and covers the outer periphery of the short inner core 222. The outer circumferential surface of the second rubber body 221 is directly press-fitted with the mounting hole 7 of the connecting bracket 1.

[0037] In this embodiment, the long inner core 212 and the short inner core 222 provide stable structural support for the long bushing 21 and the short bushing 22, preventing excessive deformation of the vibration damping bushing 2 when subjected to compressor vibration loads and the tightening force of the connecting bolts 3, thus ensuring the integrity of the overall bushing structure. The first rubber body 211 and the second rubber body 221, as core vibration damping components, have a vulcanized coating connection method that ensures a tight bond between the rubber body and the inner core without any loose gaps. This ensures that the rubber body can fully exert its elastic damping effect during vibration transmission, efficiently absorbing the high-frequency vibrations generated by the new energy electric compressor. Transient impacts further weaken the transmission of vibration to the connecting bracket 1 and the vehicle body; the outer circumferential surfaces of the first rubber body 211 and the second rubber body 221 are directly interference-fitted with the mounting holes 7 of the connecting bracket 1, eliminating the need for an additional outer sleeve structure. This reduces the number of parts and the weight of the bushing, meeting the requirements for lightweighting. The interference fit also enables a tight connection between the bushing and the connecting bracket 1, avoiding vibration amplification caused by assembly gaps. At the same time, it simplifies the assembly process and improves production efficiency. With the differentiated layout of long and short bushings, it can achieve the dual effects of precise vibration reduction and stable support.

[0038] Like 1 and Figure 4 As shown, the metal insert 6 includes three round hole inserts 61 and one elliptical hole insert 62. The major axis of the elliptical hole insert 62 is set along the assembly tolerance accumulation direction to absorb the assembly position deviation between the connecting bracket 1 and the compressor.

[0039] In this embodiment, three circular hole inserts 61 serve as the main positioning and connecting components, providing a precise installation positioning reference for the connecting bolts 3. This ensures that the connecting bolts 3 are accurately positioned and securely connected when passing through the circular hole inserts 61, thereby guaranteeing the connection rigidity between the connecting bracket 1 and the compressor, avoiding uneven stress caused by positioning deviations, and reducing vibration transmission. An elliptical hole insert 62 is used in conjunction with the circular hole inserts 61. Its long axis is set to conform to the direction of assembly tolerance accumulation, which can flexibly absorb the positional deviations between the connecting bracket 1 and the compressor caused by manufacturing and assembly processes. This effectively compensates for the assembly difficulties caused by component processing errors and assembly tolerances, reduces assembly difficulty, improves assembly efficiency, and at the same time avoids stress concentration, deformation, or even damage to the plastic body or metal inserts 6 of the connecting bracket 1 caused by forced assembly.

[0040] Specifically, the round hole insert 61 ensures the accuracy and stability of the connection, while the fault-tolerant design of the elliptical hole insert 62 improves the flexibility and compatibility of the assembly, taking into account both connection reliability and assembly convenience, adapting to the needs of mass production, while ensuring the connection stability between the connecting bracket 1 and the compressor after assembly, assisting the vibration damping bushing 2 to better play its vibration damping role, reducing vibration transmission, further ensuring the NVH performance of the whole vehicle, and meeting the installation and use requirements of new energy electric air conditioning compressors.

[0041] Like 1 and Figure 2 As shown, it also includes at least three limiting plates 8. The limiting plates 8 are thin-walled metal stamping parts. The limiting plates 8 are set on the outside of the connecting bracket 1 and fixed by the connecting bolts 3. They are used to limit the excessive axial and radial displacement of the vibration damping bushing 2 under extreme working conditions.

[0042] In this embodiment, the limiting plate 8 adopts a thin-walled metal stamping design. While ensuring its own structural strength and being able to withstand the limiting force, it minimizes its own weight, which meets the overall lightweight design requirements of the vibration damping bracket and avoids redundant weight of the bracket assembly due to the addition of the limiting structure. At least three limiting plates 8 are evenly arranged on the outside of the connecting bracket 1 and are firmly fixed by the connecting bolts 3. This can form an all-round limiting constraint on the vibration damping bushing 2, accurately limiting the excessive axial and radial displacement of the vibration damping bushing 2 under extreme working conditions (such as rapid acceleration and deceleration of the vehicle, and driving on complex bumpy roads). This effectively prevents the vibration damping bushing 2 from falling off, misaligning, or tearing of the rubber body due to excessive displacement, and ensures the connection stability between the vibration damping bushing 2 and the connecting bracket 1 and the compressor.

[0043] Specifically, this limiting function can prevent the damping performance of the damping bushing 2 from being reduced due to excessive deformation, ensuring that the damping bushing 2 can always efficiently absorb the high-frequency vibration and transient impact generated by the new energy electric compressor, thereby ensuring the stability of the vehicle's NVH performance. In addition, the limiting plate 8 is fixed by the connecting bolts 3, eliminating the need for additional fixing parts, simplifying the assembly process. Moreover, the metal material is highly durable and can withstand the limiting load for a long time, extending the service life of the damping bracket assembly and adapting to the harsh working conditions of the new energy electric air conditioning compressor.

[0044] Like 1 and Figure 2 As shown, the plastic material is reinforced polyamide or long glass fiber reinforced polypropylene, with a glass fiber content of 30%-50% by mass. The inner core material of the metal insert 6 and the vibration damping bushing 2 is aluminum alloy.

[0045] In this embodiment, the density of the reinforced polyamide or long glass fiber reinforced polypropylene material is much lower than that of the stamped sheet metal and die-cast aluminum materials in the prior art. Combined with a glass fiber content of 30%-50%, it can significantly reduce the weight of the connecting bracket 1, helping the vibration damping bracket assembly achieve the goal of lightweighting, which meets the needs of new energy vehicles for weight reduction, energy saving and improved range. It can also significantly improve the structural strength, rigidity, wear resistance and anti-aging performance of the plastic body, make up for the shortcomings of the insufficient strength of pure plastic materials, and ensure that the connecting bracket 1 can stably support the new energy electric air conditioning compressor and withstand the vibration load generated by its high speed and frequent start-stop. The inner core of the metal insert 6 and the vibration damping bushing 2 is made of aluminum alloy. Aluminum alloy has low density and light weight, which can further optimize the overall lightweight of the vibration damping bracket. The material exhibits excellent quantification, strength, and toughness, capable of withstanding the tightening force of the connecting bolts 3 and the load from vibration transmission. This prevents deformation or damage to the metal inserts 6 and the inner core of the bushing, ensuring the reliability of the bolt connection of the connecting bracket 1 and the structural integrity of the vibration damping bushing 2. Furthermore, the material is compatible with the injection molding process of the connecting bracket 1, the insert injection molding process of the metal inserts 6, and the vulcanization molding process of the vibration damping bushing 2. This makes processing convenient, cost-effective, and highly compatible. The aluminum alloy has good bonding stability with the plastic body and rubber body, which can reduce the vibration amplification problem caused by the connection gap between different materials, thus helping to improve the vibration damping effect. This ensures that the vibration damping bracket can be adapted to the harsh working conditions of new energy electric air conditioning compressors for a long time, balancing lightweight, high strength, and service life.

[0046] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A lightweight thermal management system air conditioning compressor vibration damping bracket, characterized in that, include: The connecting bracket (1) is made of plastic material by injection molding and is used to provide a support structure; Vibration damping bushing (2), the vibration damping bushing (2) is disposed on the connecting bracket (1) for connecting to the compressor and damping vibration; The connecting bolt (3) passes through the damping bushing (2) to fix the compressor to the connecting bracket (1).

2. The lightweight thermal management system air conditioning compressor vibration damping bracket as described in claim 1, characterized in that, The connecting bracket (1) is provided with a grid-like hollow reinforcing rib structure. The grid-like hollow reinforcing rib includes reinforcing ribs (4) distributed in a grid pattern in the stress path area of ​​the connecting bracket (1), and grid hollow (5) formed by the reinforcing ribs (4). The grid hollow (5) is located in the non-stress area of ​​the connecting bracket (1).

3. The lightweight thermal management system air conditioning compressor vibration damping bracket as described in claim 1, characterized in that, The connecting bracket (1) has a metal insert (6) pre-embedded at the bolt connection position. The metal insert (6) is integrally formed with the plastic body through insert injection molding process.

4. The lightweight thermal management system air conditioning compressor vibration damping bracket as described in claim 1, characterized in that, The vibration damping bushing (2) includes a long bushing (21) and a short bushing (22). The axial length of the long bushing (21) is greater than the axial length of the short bushing (22). The long bushing (21) is set at two main force points on the compressor, and the short bushing (22) is set at auxiliary support points on the compressor.

5. The lightweight thermal management system air conditioning compressor vibration damping bracket as described in claim 4, characterized in that, The long bushing (21) includes a first rubber body (211) and a long inner core (212). The first rubber body (211) is vulcanized and covers the outer periphery of the long inner core (212). The outer circumferential surface of the first rubber body (211) is directly press-fitted with the mounting hole (7) of the connecting bracket (1).

6. The lightweight thermal management system air conditioning compressor vibration damping bracket as described in claim 4, characterized in that, The short bushing (22) includes a second rubber body (221) and a short inner core (222). The second rubber body (221) is vulcanized and covers the outer periphery of the short inner core (222). The outer circumferential surface of the second rubber body (221) is directly press-fitted with the mounting hole (7) of the connecting bracket (1).

7. The lightweight thermal management system air conditioning compressor vibration damping bracket as described in claim 3, characterized in that, The metal insert (6) includes three round hole inserts (61) and one elliptical hole insert (62). The long axis of the elliptical hole insert (62) is set along the assembly tolerance accumulation direction to absorb the assembly position deviation between the connecting bracket (1) and the compressor.

8. The lightweight thermal management system air conditioning compressor vibration damping bracket as described in claim 1, characterized in that, It also includes at least three limiting plates (8), which are thin-walled metal stamping parts. The limiting plates (8) are set on the outside of the connecting bracket (1) and fixed by connecting bolts (3) to limit the axial and radial excessive displacement of the vibration damping bushing (2) under extreme working conditions.

9. The lightweight thermal management system air conditioning compressor vibration damping bracket as described in claim 1, characterized in that, The plastic material is reinforced polyamide or long glass fiber reinforced polypropylene, with a glass fiber content of 30%-50%.

10. The lightweight thermal management system air conditioning compressor vibration damping bracket as described in claim 3, characterized in that, The core material of the metal insert (6) and the vibration damping bushing (2) is aluminum alloy.

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