Intelligent diagnosis device for thermal management system of new energy automobile
By using a cylindrical spool and elastic tension band structure, combined with static and sliding temperature sensors, the problem of traditional sensors being unable to adapt to different pipe diameters is solved, achieving high-precision, stable, and simplified temperature detection for the thermal management system of new energy vehicles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU TRAFFIC VOCATIONAL HIGH SCHOOL
- Filing Date
- 2025-05-19
- Publication Date
- 2026-04-24
AI Technical Summary
Existing thermal management diagnostic devices struggle to achieve a tight fit when faced with differences in the piping structure of different heat exchange components, resulting in large measurement errors and complex installation. They are also prone to loosening, especially under vibration and temperature change conditions.
It adopts a cylindrical roll and elastic tension band structure, and achieves adaptive fixation of different pipe diameters through locking blocks and clamping buckles. Combined with static and sliding temperature sensors, it forms a multi-dimensional temperature detection system.
It achieves full-circumferential close contact between the sensor and the pipeline, reduces measurement errors, simplifies the installation process, improves detection stability and accuracy, can resist vibration under complex working conditions, and provides three-dimensional temperature field diagnosis.
Smart Images
Figure CN224163366U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive thermal management technology, specifically to an intelligent diagnostic device for the thermal management system of new energy vehicles. Background Technology
[0002] Thermal management diagnostic devices, as key equipment for monitoring the condition of vehicle thermal systems, typically consist of multi-physical quantity sensing modules, signal conditioning circuits, on-board communication interfaces, and data analysis software. They connect to the refrigerant and coolant pipelines via mechanical joints and, combined with thermodynamic state equations and preset thresholds, achieve system energy efficiency assessment. By comprehensively and continuously collecting temperature and pressure data from key components such as the air conditioning cooling cycle, the power battery cooling cycle, and the motor and electronic control cooling cycle, they monitor and display the operating parameters and performance status of each component of the new energy vehicle's thermal management system in real time, providing accurate and reliable data for performance evaluation and fault diagnosis of the thermal management system.
[0003] In practical applications of existing thermal management diagnostic devices, the significant differences in the pipe structure design of different heat exchange components (such as battery liquid cooling plates, motor radiators, condensers, etc.) result in a wide range of outer diameters, making it difficult for universal sensor interfaces to adapt to diverse physical connection requirements. Traditional testing equipment typically uses fixed-specification mechanical clamps or single-size contact probes, which are prone to problems such as loose fit and insufficient contact area when faced with changes in pipe diameter, affecting the accuracy and stability of the test parameters. In addition, while manual adjustment adapters can partially alleviate size matching issues, they are cumbersome to operate and difficult to guarantee repeatability, especially under complex operating conditions such as vehicle vibration and temperature fluctuations, which can easily lead to gap loosening and further exacerbate measurement errors. Utility Model Content
[0004] (I) Technical problem to be solved: In view of the shortcomings of the existing technology, this utility model provides an intelligent diagnostic device for the thermal management system of new energy vehicles, which has the advantages of simplified installation and adaptability to different pipe diameters, and solves the problems of poor fit, measurement error and complicated installation caused by the size limitation of traditional sensors.
[0005] (II) Technical Solution: To achieve the above-mentioned goals of simplified installation and adaptability to different pipe diameters, this utility model provides the following technical solution: A smart diagnostic device for a thermal management system of a new energy vehicle, including a temperature detector and a signal line. One end of the signal line is connected to the temperature detector, and the other end of the signal line is fixedly connected to a positioning plate. A static temperature sensor connected to the signal line is fixedly connected to the inner side of the positioning plate. A cylindrical roller with an elastic tension band is fixedly installed on the outer side of the positioning plate. Both ends of the positioning plate are provided with protruding guide bosses. A locking block is slidably connected to one end of the guide boss, and the locking block is fixedly connected to the elastic tension band. A locking buckle is provided on the locking block, and a locking hole that can lock with the locking buckle is also provided on the end face of the positioning plate.
[0006] Preferably, two or more elastic tightening bands are connected to the locking block.
[0007] Preferably, the cylindrical reel is provided with a rewinding and resetting structure.
[0008] Preferably, a connecting wire is wound inside the cylindrical reel, and when the cylindrical reel is in the winding state, a sliding temperature sensor is also provided between the locking block and the positioning plate. The sliding temperature sensor is slidably connected to the guide boss when the cylindrical reel is in the winding state. One end of the connecting wire is connected to the signal line, and the other end of the connecting wire is connected to the sliding temperature sensor. The sliding temperature sensor has a through hole, and the elastic tension band passes through the through hole and is fixedly connected to the locking block.
[0009] Preferably, when the locking block moves, it causes the elastic band to extend, and the extended elastic band binds the heat exchange pipe being detected, and the sliding temperature sensor can slide along the path of the elastic band while attached to the heat exchange pipe.
[0010] Preferably, the elastic band is made of heat-insulating material.
[0011] (III) Beneficial Effects: Compared with the prior art, this utility model provides an intelligent diagnostic device for the thermal management system of new energy vehicles, which has the following beneficial effects:
[0012] 1. This intelligent diagnostic device for the thermal management system of new energy vehicles solves the size limitations of traditional fixed sensors by using a combination of a cylindrical roller structure and an elastic tension band structure. When the locking block is pulled along the circumference of the heat exchange pipe, the elastic tension band forms a spiral winding trajectory and achieves self-locking fixation through the clamping buckle. The radial preload generated by its elastic deformation can adaptively fit the surface of pipes with different diameters and irregular shapes. Compared with traditional fixed clamps or manual adjustment schemes, this structure can ensure close contact between the sensor and the pipe in the entire circumference without manual intervention, effectively eliminating gap errors caused by size differences, significantly improving the stability and measurement accuracy of temperature detection, while simplifying the installation process and enhancing the anti-vibration and loosening ability under complex working conditions.
[0013] 2. This intelligent diagnostic device for the thermal management system of new energy vehicles uses a combination of static and sliding temperature sensor structures to form a dynamically distributed continuous detection point. The static sensor acquires local steady-state temperature values, while the sliding sensor synchronously collects temperature gradient data during axial sliding. The two are then fused to construct a three-dimensional temperature field distribution model of the heat exchange pipeline. Compared with the traditional single-point temperature measurement method, this technology can accurately identify hidden defects such as abnormal axial heat conduction, local overheating, or uneven cooling in the pipeline, and achieve a full-dimensional diagnosis of the energy efficiency status of the thermal management system. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural schematic diagram of the intelligent diagnostic device for the thermal management system of new energy vehicles in this utility model;
[0015] Figure 2 This is a front view of the intelligent diagnostic device for the thermal management system of new energy vehicles in this utility model;
[0016] Figure 3 This is a cross-sectional view of the positioning plate structure of the intelligent diagnostic device for the thermal management system of new energy vehicles in this utility model;
[0017] Figure 4 This is a schematic diagram of the elastic tension wire structure winding of the intelligent diagnostic device for the thermal management system of new energy vehicles in this utility model;
[0018] Figure 5 This is a schematic diagram of the spiral heat exchange pipe of the intelligent diagnostic device for the thermal management system of new energy vehicles in this utility model.
[0019] In the diagram: 1. Temperature detector; 2. Signal line; 3. Positioning plate; 31. Static temperature sensor; 32. Cylindrical reel; 33. Guide boss; 34. Clamping hole; 4. Elastic tension band; 5. Connecting line; 6. Locking block; 61. Clamping buckle; 7. Sliding temperature sensor; 8. Heat exchange pipe. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figures 1-5A smart diagnostic device for a thermal management system of a new energy vehicle includes a temperature detector 1 and a signal line 2. One end of the signal line 2 is connected to the temperature detector 1, and the other end is fixedly connected to a positioning plate 3. A static temperature sensor 31, which is connected to the signal line 2, is fixedly connected to the inner side of the positioning plate 3. The signal line 2 forms a stable electrical signal transmission path between the static temperature sensor 31 on the positioning plate 3 and the temperature detector 1, ensuring that the temperature data collected by the static temperature sensor 31 can be transmitted to the detector for processing in real time and accurately. The static temperature sensor 31 is fixed to the inner side of the positioning plate 3, so that it can fit tightly against the surface of the heat exchange pipe 8 after installation, eliminating the contact problems caused by the displacement of the static temperature sensor 31, thereby ensuring the continuity and reliability of local temperature detection and providing reference data for steady-state temperature monitoring of the thermal management system. A cylindrical roller 32 with an elastic tension band 4 wound around it is fixedly installed on the outer side of the positioning plate 3. The length of the elastic tension band 4 can be adjusted by rotating and unwinding the roller. The elastic tension band 4 is wound around the reel to form a pre-tension reserve. When the locking block 6 moves circumferentially along the heat exchange pipe 8, the tension band unwinds from the reel and undergoes elastic deformation. Its radial contraction force can adapt to the outer wall of pipes with different diameters, forming a uniformly distributed spiral winding trajectory. The combination design of the cylindrical reel 32 and the elastic tension band 4 breaks through the size limitations of traditional fixed clamps, enabling the device to be compatible with various irregularly shaped pipes. At the same time, the deformation characteristics of the elastic material automatically compensate for the installation gap, ensuring that the sensor and the pipe surface are tightly fitted in the entire circumference. The positioning plate 3 has raised guide bosses 33 at both ends. A locking block 6 is slidably connected to one guide boss 33, and the locking block 6 is fixedly connected to the elastic tension band 4. The guide boss 33 provides precise guidance for the linear movement of the locking block 6, preventing the tension band from deviating or twisting during traction. When the locking block 6 slides along the guide boss 33, it drives the elastic tension band 4 to extend or contract synchronously, forming an adjustable annular binding structure. This design achieves precise control of the tightening band length through mechanical guidance and sliding cooperation, enabling operators to quickly adapt to different pipe diameter requirements. While simplifying the installation process, it ensures the coaxiality of the tightening band winding trajectory with the pipe axis, effectively improving measurement stability. The locking block 6 is equipped with a locking buckle 61, and the end face of the positioning plate 3 also has a locking hole 34 that can interlock with the locking buckle 61. When the elastic tightening band 4 is wound to the target circumference, the locking buckle 61 of the locking block 6 engages with the locking hole 34 of the positioning plate 3, forming a mechanical interlock. A self-locking effect is generated through the wedge-shaped contact between the buckle and the hole wall.
[0022] Please see Figures 1-5Two or more elastic tension bands 4 are connected to the locking block 6. By simultaneously applying radial restraint to the heat exchange pipe 8 with multiple elastic tension bands 4, measurement errors caused by local loosening or uneven force when a single tension band is wound can be effectively avoided. Especially for irregular pipes or irregular surfaces, the composite winding trajectory formed by multiple tension bands can improve the fit of the contact surface, ensuring a tight circumferential contact between the sensor and the pipe, thereby improving the accuracy of temperature detection. A winding and reset structure is provided inside the cylindrical reel 32. The reset torque is provided by the built-in coil spring or elastic element. When the locking block 6 is released, the elastic tension band 4 can quickly retract into the reel under the action of the reset force, avoiding the tedious operation caused by manual adjustment, while ensuring the consistency of the initial position of the tension band when reused, improving the ease of operation and work efficiency of the device. A connecting wire 5 is wound inside the cylindrical reel 32. When the cylindrical reel 32 is in the winding state, a sliding temperature sensor 7 is installed between the locking block 6 and the positioning plate 3. The sliding temperature sensor 7 is slidably connected to the guide boss 33 when the cylindrical reel 32 is wound. When the elastic tension band 4 unfolds and wraps around the pipe, the connecting wire 5, along with the retraction of the cylindrical reel 32, causes the sliding temperature sensor 7 to move axially along the pipe, allowing it to continuously collect temperature data while adhering to the pipe surface. The sliding connection structure of the guide boss 33 ensures the straightness and stability of the sensor's movement trajectory, thereby obtaining information on the axial temperature gradient distribution of the pipe, overcoming the limitations of single-point static detection, and providing multi-dimensional temperature field analysis data for the thermal management system. One end of the connecting wire 5 is connected to the signal line 2, and the other end is connected to the sliding temperature sensor 7. The sliding temperature sensor 7 has a through hole through which the elastic tension band 4 passes and is fixedly connected to the locking block 6. When the locking block 6 moves, it causes the elastic tension band 4 to extend. The extended elastic tension band 4 binds the heat exchange pipe 8 being tested. The elastic deformation of the elastic tension band 4 under the traction of the locking block 6 can adapt to different pipe diameters. The radial preload formed by its spiral winding path ensures a tight fit between the sensor and the pipe surface. As the sliding temperature sensor 7 slides along the tension band path, it can simultaneously collect temperature values at multiple locations along the pipe axis. Combined with the fixed-point data from the static sensor, a complete temperature distribution model is constructed, thereby accurately identifying areas of abnormal heat conduction in the pipe. The elastic tension band 4 uses heat-insulating material, specifically high-temperature silicone. The heat-insulating material can block the conduction of heat from the pipe surface to the tension band structure, preventing the elastic element from degrading in mechanical properties due to high temperature. At the same time, it prevents heat from being transferred to the locking block 6 or the internal structure of the roll through the tension band, ensuring that the sensor measurement data only reflects the actual temperature of the pipe, improving the accuracy of the detection results and the environmental adaptability of the device. The elastic tension band 4 connected to the cylindrical roll 32 and the connecting line 5 can be retracted separately. The retraction of the elastic tension band 4 releases the pipe from its fixation, while the independent retraction of the connecting line 5 specifically drives the axial movement of the sliding temperature sensor 7.The separation mechanism of the two avoids mutual interference, ensuring both the rapid reset of the tensioning band and the smooth and controllable movement of the sensor.
[0023] Working Principle: This intelligent diagnostic device achieves adaptive detection of the heat exchange pipe 8 through a three-level positioning mechanism. During installation, the static temperature sensor 31 inside the positioning plate 3 is first pre-attached to the surface of the heat exchange pipe 8. Then, the locking block 6 is pulled circumferentially along the heat exchange pipe 8, causing the elastic tension band 4 to unfold from the cylindrical roll 32, generating elastic deformation and forming a spiral winding trajectory along the heat exchange pipe 8 being tested. When the locking block 6 winds around the heat exchange pipe 8 once or more, it engages with the locking hole 34 on the end face of the positioning plate 3 through the locking buckle 61 to form a lock. At this time, the elastic tension band 4 generates radial pre-tension force to achieve adaptive fixation of the heat exchange pipe 8. Upon detection startup, the temperature detector 1 simultaneously acquires the single-point steady-state temperature values of the static temperature sensor 31 and the sliding temperature sensor 7. This winding structure can measure heat exchange pipes 8 of different shapes and sizes, effectively solving the problem that existing sensors cannot effectively fit the pipes and sensors due to the large differences in pipe diameters among the various heat exchange components of the thermal management system.
[0024] Simultaneously, after mechanical fixing is completed, the connecting line 5 connected to the cylindrical reel 32 can be individually controlled to retract. When the connecting line 5 retracts, it will drive the sliding temperature sensor 7 to move together. The sliding temperature sensor 7 achieves directional axial sliding through its through hole and the cooperation of the elastic tension band 4. This sliding process allows the sliding temperature sensor 7 to form an array of axially distributed dynamic detection points, which, combined with the static temperature sensor 31, constitute a dual-mode temperature measurement system. By combining the axial temperature gradient data obtained by the sliding temperature sensor 7 during the reset process of the elastic tension band 4 with the data from the static temperature sensor 31, the axial temperature distribution model of the heat exchange pipe 8 can be accurately reconstructed, realizing the three-dimensional temperature field diagnosis of the thermal management system.
[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An intelligent diagnostic device for a thermal management system of a new energy vehicle, comprising a temperature detector (1) and a signal line (2), one end of the signal line (2) being connected to the temperature detector (1), and the other end of the signal line (2) being fixedly connected to a positioning plate (3), wherein a static temperature sensor (31) connected to the signal line (2) is fixedly connected to the inner side of the positioning plate (3), characterized in that: The positioning plate (3) is fixedly mounted on the outside of a cylindrical roller (32) with an elastic tension band (4) wrapped around it. The positioning plate (3) has protruding guide bosses (33) at both ends. A locking block (6) is slidably connected to one end of the guide boss (33), and the locking block (6) is fixedly connected to the elastic tension band (4). A locking buckle (61) is provided on the locking block (6), and a locking hole (34) is also provided on the end face of the positioning plate (3) to lock with the locking buckle (61).
2. The intelligent diagnostic device for a new energy vehicle thermal management system according to claim 1, characterized in that: The elastic tightening band (4) is connected to the locking block (6) by two or more bands.
3. The intelligent diagnostic device for a new energy vehicle thermal management system according to claim 1, characterized in that: The cylindrical reel (32) is provided with a rewinding and resetting structure.
4. The intelligent diagnostic device for a new energy vehicle thermal management system according to claim 1, characterized in that: The cylindrical spool (32) is also wound with a connecting wire (5), and when the cylindrical spool (32) is in the winding state, a sliding temperature sensor (7) is also provided between the locking block (6) and the positioning plate (3). The sliding temperature sensor (7) is slidably connected to the guide boss (33) when the cylindrical spool (32) is in the winding state. One end of the connecting wire (5) is connected to the signal line (2), and the other end of the connecting wire (5) is connected to the sliding temperature sensor (7). The sliding temperature sensor (7) has a through hole, and the elastic tightening band (4) passes through the through hole and is fixedly connected to the locking block (6).
5. The intelligent diagnostic device for a new energy vehicle thermal management system according to claim 4, characterized in that: When the locking block (6) moves, it causes the elastic band (4) to extend. The extended elastic band (4) binds the heat exchange pipe (8) to be detected, and the sliding temperature sensor (7) can slide along the path of the elastic band (4) while attached to the heat exchange pipe (8).
6. The intelligent diagnostic device for a new energy vehicle thermal management system according to claim 2, characterized in that: The elastic band (4) is made of heat-insulating material.