Integrated battery pack temperature acquisition wire harness rapid detection device

Abstract

The invention relates to the field of automobile part detection, in particular to an integrated battery pack temperature acquisition wire harness rapid detection device which comprises a fixed support, a cross beam, a transverse sliding rail, a photoelectric switch, a position adjusting assembly, a telescopic sleeve assembly, a horizontal guide rail assembly and a hot air mechanism. The bottom of the fixing support is arranged on the working ground, a cross beam is installed on the fixing support, a transverse sliding rail matched with the position adjusting assembly is fixedly installed on the cross beam, and the position adjusting assembly is installed on the transverse sliding rail in a sliding mode and used for driving the telescopic sleeve assembly to move and adjust. In the specific using process of the rapid detection device, automatic, efficient and high-precision temperature collection wire harness detection is achieved, manual intervention is avoided, the detection efficiency and reliability of a production line are remarkably improved, and the rapid detection device has the advantages of being simple in structure, convenient to operate and high in detection efficiency and detection precision.

Description

Technical Field

[0001] The present invention relates to the field of automobile parts detection, and in particular to an integrated battery pack temperature acquisition harness rapid detection device. Background Art

[0002] Under different ambient temperatures, temperature is a core parameter for the protection, capacity and mileage estimation of power battery modules. As the power source of new energy vehicles, the safety issues of battery packs cannot be underestimated. In order to detect the battery pack temperature in real time to avoid high-temperature spontaneous combustion, temperature acquisition harnesses are installed between different battery modules. The temperature is collected through thermistors. However, in actual production, there are flaws in the connection of the temperature acquisition harness; that is, the thermistor has two pins, one connected to GND and the other connected to the corresponding acquisition channel. Assume that Pin10 is GND and one end of N thermistors are connected to this GND, and the other end is connected to Pin11, Pin12, Pin13... respectively. However, if the connection is wrong, the one originally connected to Pin11 is connected to Pin12. Since the battery pack is in the workshop, the temperature of each battery is the same degree Celsius. Even if the harness is connected reversely, the data read are consistent and cannot be distinguished. The current conventional detection method can only rely on manual measurement of the thermistor probe resistance with a multimeter, and judge whether the temperature collection harness is conductive to determine whether the temperature collection harness is connected. It cannot detect whether the temperature collection harness is connected incorrectly, and cannot truly detect whether the battery pack temperature collection harness is connected correctly. Summary of the Invention

[0003] The purpose of the present invention is to provide an integrated battery pack temperature acquisition harness rapid detection device, which, during specific use, realizes automatic, efficient and high-precision temperature acquisition harness detection, avoids manual intervention, significantly improves the detection efficiency and reliability of the production line, and has the advantages of simple structure, convenient operation, high detection efficiency and high detection accuracy.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: An integrated battery pack temperature collection harness rapid detection device, comprising a fixed bracket, a crossbeam, a transverse slide rail, a photoelectric switch, a position adjustment assembly, a telescopic sleeve assembly, a horizontal guide rail assembly, and a hot air mechanism; The bottom of the fixed bracket is arranged on the working ground, a crossbeam is installed on the fixed bracket, a transverse slide rail adapted for the installation of the position adjustment assembly is fixedly installed on the crossbeam, and the position adjustment assembly is slidably installed on the transverse slide rail to drive the telescopic sleeve assembly to move and adjust; A telescopic sleeve assembly is provided at the bottom of the position adjustment assembly and is connected to the position adjustment assembly via bolts. A horizontal guide rail assembly is mounted on the telescopic sleeve assembly and is fastened to the telescopic sleeve assembly. The horizontal guide rail assembly is used to carry and guide the hot air mechanism. The telescopic sleeve assembly, horizontal guide rail assembly, and hot air mechanism together constitute a detection framework structure for detecting the battery pack temperature collection harness. The hot air mechanism is used to generate heated air. The hot air mechanism is arranged on the horizontal guide rail assembly and can be adjusted in position on the horizontal guide rail assembly. The analysis and control system is connected to the photoelectric switch, position adjustment assembly, telescopic sleeve assembly and hot air mechanism through a data line to form a rapid detection device for the battery pack temperature collection harness detection.

[0005] Furthermore, a polyurethane buffer gasket is provided at the bottom of the detection frame. The polyurethane buffer gasket has a Shore A50 hardness and can absorb 90% of the impact kinetic energy, thereby preventing the detection frame from damaging and deforming the battery pack shell.

[0006] Furthermore, a conveyor belt is arranged on the lower side of the beam between the fixed brackets, and the battery pack to be inspected is set on the conveyor belt. A thermal probe is set on the battery pack. The conveyor belt is used to drive the battery pack inspection and transportation, and the thermal probe is used to sense and check the temperature of the battery pack. A photoelectric switch for detecting the position of the battery pack is installed at the bottom of the beam.

[0007] The position adjustment assembly includes a transverse slider, a column sleeve, a working hydraulic cylinder, a hydraulic push rod, and a synchronous mounting frame; the transverse slider is slidably engaged on the transverse slide rail, the column sleeve is mounted on the transverse slider by bolts, a working hydraulic cylinder and a vertical slider are mounted on the column sleeve, vertical slide rails are mounted on both sides of the synchronous mounting frame, the vertical slide rails are in sliding contact with the vertical slider, a hydraulic push rod is mounted on the working hydraulic cylinder, the outer end of the hydraulic push rod is connected to the synchronous mounting frame and drives the synchronous mounting frame to rise and fall.

[0008] The telescopic sleeve assembly includes a fixed sleeve, a sleeve fixing frame and a telescopic tube; the sleeve fixing frame is installed and connected to the synchronous mounting frame for fixing the fixed sleeve, the fixed sleeve is installed on the sleeve fixing frame, and a mounting hole is opened in the fixed sleeve. The telescopic tube is installed in the mounting hole on the fixed sleeve and can be telescopically adjusted in the mounting hole.

[0009] The horizontal guide rail assembly includes a fixed seat and a guide rail frame. The fixed seat is fixedly installed on the fixed sleeve and the telescopic tube. The guide rail frame is provided at the lower part of the fixed seat. The guide rail frame is installed and connected to the fixed seat by connecting bolts. A semi-open horizontal guide rail groove is opened on the side of the guide rail frame. The hot air mechanism is installed in the guide rail groove and can be displaced and adjusted in the guide rail groove.

[0010] The hot air mechanism includes a wheel motor, a connector and a hot air nozzle. The wheel motor is arranged in the guide rail groove and can be displaced and adjusted in the guide rail groove. The wheel motor is connected to the hot air nozzle through the connector and drives the hot air nozzle to achieve adaptive position adjustment. The hot air nozzle is connected to an external hot air source for blowing hot air to the upper part of the battery pack to achieve temperature detection of the thermistor probe.

[0011] An integrated battery pack temperature acquisition harness rapid detection device includes the following steps during detection: Step 1: Battery Pack Positioning and Transport Interruption: Driven by an external servo motor, the conveyor belt precisely transports the battery pack to be inspected along the conveyor track to the preset inspection station. Positioning accuracy is provided by an encoder in real time, ensuring that the deviation between the battery pack centerline and the reference axis of the inspection frame is ≤±1.5mm. When the battery pack triggers a high-precision diffuse reflection photoelectric switch, the control system immediately cuts off the conveyor belt power supply and implements dynamic braking using an electromagnetic brake, ensuring that the conveyor belt is completely stationary within 200ms, avoiding positioning errors caused by inertial displacement. Step 2: Positioning and cushioning the detection frame: The hydraulic push rod in the position adjustment assembly is controlled by a closed-loop proportional valve, driving the detection frame vertically downward at a constant rate of 0.05 m / s. A displacement sensor is installed on the detection frame to monitor the travel in real time. When the lower end of the detection frame is 10 mm away from the upper shell of the battery pack, the displacement sensor switches to a low-speed mode (0.01 m / s) to implement a soft landing cushioning mechanism. Step 3: Probe Alignment and XY Precision Positioning: The detection frame automatically positions the thermal probes through its integrated precision motion control system. Specifically, the servo-driven wheel motor achieves X-axis motion within the guide rail mechanism (positioning accuracy ±0.02mm) while simultaneously adjusting the telescopic tube within the telescopic sleeve assembly to achieve Y-axis displacement (stroke error ≤±0.03mm). The nozzle on the hot air nozzle is driven to precisely align the thermal probes on the battery pack temperature collection harness with vertical incidence (angle deviation <0.5°). The entire alignment process is completed within 200ms, and the position error is controlled within 10% of the probe diameter (i.e., ≤0.5mm), ensuring the accuracy of subsequent temperature rise testing. Step 4: Thermal Probe Function Testing and Fault Diagnosis: The analysis and control system precisely controls the output power of the hot air nozzle using a PID algorithm, performing a step-by-step heating test on the thermal probe array according to a preset temperature gradient (25°C → 50°C → 75°C). The analysis and control system monitors the response characteristics of each probe in real time. When heating probe No. n, the high-precision data acquisition module (sampling rate 1kHz) synchronously detects its resistance change (ΔR / R0) and temperature rise curve (dT / dt). A test is considered qualified if the following conditions are met: the resistance decay rate matches the theoretical B value constant (3435K ± 1%); the temperature rise response delay between adjacent thermal probes is ≤ 100ms; and there is no cross-interference between the signals of each channel (isolation > 60dB). Step 5. Processing of test results and device reset: After completing the temperature sensing system test, the analysis and control system executes the following automated process based on the test data: If it is detected that the resistance-temperature response characteristics of the thermistor probe do not meet the preset tolerance range (ΔR / R0 < ±5%), the analysis and control system will immediately trigger a failure judgment, generate a quality report containing the faulty probe ID, deviation type, and recommended corrective measures, and automatically push it to the maintenance station through the MES; if all test points pass verification, the position adjustment component will raise the test frame to a safe height (Z = 300 mm) at a rate of 0.1 m / s. At this time, the photoelectric switch will be reactivated and a ready signal will be sent to the PLC. The conveyor belt will resume operation after a 500 ms delay and transport the qualified battery pack to the next process station.

[0012] The beneficial effects of the present invention are as follows: the integrated battery pack temperature acquisition harness rapid detection device of the present invention can adapt to the detection requirements of battery packs of different specifications by adopting a modular design; it integrates machine vision and force feedback to achieve intelligent and precise positioning; it integrates multi-sensor data to ensure the reliability of the detection results; it controls the hot air nozzle to heat the thermistor on the battery pack temperature acquisition harness one by one to detect whether the temperature sensing harness is qualified, and the qualified judgment includes matching the resistance attenuation rate with the theoretical B value constant (3435K±1%); the temperature rise response delay between adjacent probes is ≤100ms; there is no cross-interference between the signals of each channel (isolation>60dB), the present invention avoids the situation where, under the conditions of the battery pack being stationary in the workshop, the temperature of each battery is the same degree Celsius, even if the harness is connected reversely, the read data are consistent and cannot be distinguished, resulting in omissions in the detection of the battery pack temperature acquisition harness. The present invention realizes fully automatic, efficient and high-precision temperature acquisition harness detection, avoids manual intervention, and significantly improves the detection efficiency and reliability of the production line. It is directly connected to the battery pack production line and has the advantages of simple structure, convenient operation, high detection efficiency and high precision, making it suitable for large-scale promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1This is a flowchart of the battery pack temperature acquisition harness detection device in an example of the present invention; Figure 2 This is a schematic diagram of the overall structure of the battery pack temperature acquisition harness detection device in an example of the present invention; Figure 3 This is a schematic diagram of the top view of the battery pack temperature collection harness detection device in an example of the present invention; Figure 4 Schematic diagram of the structure of the position adjustment component in an example of the present invention; Figure 5 Schematic diagram of the structure of the telescopic sleeve assembly in an example of the present invention; Figure 6 Schematic diagram of the structure of the horizontal guide rail assembly in an example of the present invention; Figure 7 Schematic diagram of the structure of the hot air mechanism in the embodiment of the present invention; Figure 8 Schematic diagram of the structure of the detection framework structure in the embodiment of the present invention; Figure 9 Schematic diagram of the structure of the wheel motor in an example of the present invention; The numbers in the figure are: 1-fixed bracket, 2-crossbeam, 3-transverse slide rail, 4-photoelectric switch, 5-position adjustment assembly, 6-telescopic sleeve assembly, 7-horizontal guide rail assembly, 8-hot air mechanism, 9-analysis and control system, 10-conveyor belt, 11-buffer gasket; 51-transverse slider, 52-column sleeve, 53-working hydraulic cylinder, 54-hydraulic push rod, 55-synchronous mounting frame; 61-fixed sleeve, 62-sleeve fixing frame, 63-telescopic tube; 71-fixed seat, 72-guide rail frame, 73-horizontal guide rail groove; 81-wheel motor, 82-connecting piece, 83-hot air nozzle. DETAILED DESCRIPTION

[0014] Specific Example 1: The following examples clearly and completely describe the technical solutions of the present invention. Obviously, the examples described are only some of the examples of the present invention, not all of them. Based on the examples of the present invention, all other examples derived by persons of ordinary skill in the art without inventive effort are within the scope of protection of the present invention. It should be noted that, unless otherwise specified, all embodiments and preferred implementation methods described herein can be combined to form new technical solutions. Unless otherwise specified, all technical features and preferred features described herein can be combined to form new technical solutions. Unless otherwise specified, all components or preferred components described herein can be combined to form new technical solutions. Unless otherwise specified, the numerical range "a-b" is an abbreviation for any combination of real numbers between a and b, where a and b are both real numbers. For example, the numerical range "1.5-2.5" indicates that all real numbers between "1.5-2.5" are listed herein, and "1.5-2.5" is merely an abbreviation for these numerical combinations. The "ranges" disclosed herein, in the form of lower limits and upper limits, may be one or more lower limits and one or more upper limits, respectively. In the present invention, unless otherwise indicated, each reaction or operation step may be performed sequentially or in a sequential order. Preferably, the reaction methods herein are performed sequentially. Unless otherwise indicated, the technical and scientific terms used herein have the same meanings as those familiar to those skilled in the art. In addition, any methods or materials similar or equivalent to those described herein may also be applied to the present invention.

[0015] As the specification of the present invention Figure 1 , Instruction Manual Figure 2As shown, in order to solve the problem that the existing battery pack temperature collection harness detection relies on manual measurement of the thermistor resistance with a multimeter, and judges whether the temperature collection harness is conductive to judge whether the temperature collection harness is connected, and cannot detect whether the temperature collection harness is connected incorrectly, and cannot truly detect whether the battery pack temperature collection harness is correctly connected, the present invention provides an integrated battery pack temperature collection harness rapid detection device, which includes a fixed bracket 1, a beam 2, a transverse slide 3, a photoelectric switch 4, a position adjustment component 5, a telescopic sleeve component 6, a horizontal guide rail component 7 and a hot air mechanism 8; the bottom of the fixed bracket 1 is arranged on the working ground, and a beam 2 is installed on the fixed bracket 1, and the beam 2 is used to adjust and support the position adjustment component 5. A transverse slide 3 adapted for the installation of the position adjustment component 5 is fixedly installed on the beam 2. The position adjustment component 5 is slidably installed on the horizontal slide rail 3 to drive the telescopic sleeve component 6 to move and adjust; a telescopic sleeve component 6 that can be telescopically adjusted is provided at the lower part of the position adjustment component 5, and the telescopic sleeve component 6 is used to support the installation of the horizontal guide rail component 7. During installation, the telescopic sleeve component 6 is installed and connected to the position adjustment component 5 by bolts, and a horizontal guide rail component 7 is installed on the telescopic sleeve component 6. The horizontal guide rail component 7 is fastened to the telescopic sleeve component 6, and the horizontal guide rail component 7 is used to carry and guide the hot air mechanism 8; the telescopic sleeve component 6, the horizontal guide rail component 7 and the hot air mechanism 8 constitute a detection frame structure for detecting the temperature collection harness of the battery pack 12; the hot air mechanism 8 is used to generate heated air for the upper part of the battery pack 12, and the hot air mechanism 8 is provided on the horizontal guide rail component 7 and can be adjusted in position on the horizontal guide rail component 7. At the same time, a conveyor belt 10 is arranged on the lower side of the beam 2 between the fixed brackets 1, and a battery pack 12 to be tested is set on the conveyor belt 10, and a thermal probe is set on the battery pack 12. The conveyor belt 10 is used to drive the battery pack 12 for detection and transportation, and the thermal probe is used to sense and check the temperature of the battery pack 12. A photoelectric switch 4 for detecting the position of the battery pack 12 is installed at the bottom of the beam 2, and an analysis and control system 9 is arranged on the outside of the detection frame structure. The analysis and control system 9 can accurately adjust the output power of the hot air nozzle 83 through the PID algorithm and perform detection control actions according to test data.

[0016] As the specification of the present invention Figure 6 As shown, further, in order to avoid damage and deformation of the battery pack 12 shell when the detection frame moves downward, a polyurethane buffer gasket 11 is provided at the bottom of the detection frame. The polyurethane buffer gasket 11 has a Shore A hardness of 50 and can absorb 90% of the impact kinetic energy, which can avoid damage and deformation of the battery pack 12 shell caused by collision by the detection frame.

[0017] As the specification of the present invention Figure 4As shown, the position adjustment component 5 for driving the detection frame structure to adjust its position includes a horizontal slider 51, a column sleeve 52, a working hydraulic cylinder 53, a hydraulic push rod 54, and a synchronous mounting frame 55; during installation, the horizontal slider 51 is slidably engaged on the horizontal slide rail 3, and the column sleeve 52 is installed on the horizontal slider 51 by bolts. The working hydraulic cylinder 53 and the vertical slider are installed on the column sleeve 52, and vertical slide rails are installed on both sides of the synchronous mounting frame 55. The vertical slide rails are in sliding contact with the vertical sliders, and a retractable hydraulic push rod 54 is installed on the working hydraulic cylinder 53. The outer end of the hydraulic push rod 54 is connected to the synchronous mounting frame 55 and drives the synchronous mounting frame 55 to rise and fall.

[0018] As the specification of the present invention Figure 5 As shown, the telescopic sleeve assembly 6 for adapting to the installation of the horizontal guide rail assembly 7 and driving the horizontal guide rail assembly 7 to achieve spacing adjustment includes a fixed sleeve 61, a sleeve fixing frame 62 and a telescopic tube 63; wherein, the sleeve fixing frame 62 is used to connect and fix the fixed sleeve 61. During installation, the sleeve fixing frame 62 is installed and connected to the synchronous installation frame 55 for fixedly connecting the fixed sleeve 61. The fixed sleeve 61 is installed on the sleeve fixing frame 62. A mounting hole adapted for the telescopic assembly of the telescopic tube 63 is opened in the fixed sleeve 61. The telescopic tube 63 is installed in the mounting hole on the fixed sleeve 61 and can be telescopically adjusted in the mounting hole.

[0019] As the specification of the present invention Figure 6 As shown, the horizontal guide rail assembly 7 for adapting the installation and adjustment of the hot air mechanism 8 includes a fixed seat 71 and a guide rail frame 72, wherein the fixed seat 71 is used to install and connect the guide rail frame 72. During installation, the fixed seat 71 is fixedly installed on the fixed sleeve 61 and the telescopic tube 63. A guide rail frame 72 is provided at the lower part of the fixed seat 71. The guide rail frame 72 is installed and connected to the fixed seat 71 through connecting bolts. A semi-open horizontal guide rail groove 73 for adapting the installation of the hot air mechanism 8 is provided on the side of the guide rail frame 72. The hot air mechanism 8 is installed in the guide rail groove and can be displaced and adjusted in the guide rail groove.

[0020] As the specification of the present invention Figure 7 As shown, the hot air mechanism 8 for generating heated air for the upper part of the battery pack 12 includes a wheel motor 81, a connector 82 and a hot air nozzle 83, wherein the wheel motor 81 is installed in the guide rail groove and can be displaced and adjusted in the guide rail groove. During installation, the wheel motor 81 is connected to the hot air nozzle 83 through the connector 82 and drives the hot air nozzle 83 to realize adaptive position adjustment on the Y axis (to meet the alignment of the thermistor on the battery pack 12). The hot air nozzle 83 is connected to an external hot air source for blowing hot air to the upper part of the battery pack 12 to realize temperature detection of the thermistor.

[0021] The integrated battery pack temperature acquisition harness rapid detection device of the present invention includes the following working steps when performing detection: Step 1: Positioning and interrupting the transport of the battery pack 12: Driven by an external servo motor, the conveyor belt 10 precisely transports the battery pack 12 to be inspected along the conveyor track to the preset inspection station. The encoder provides real-time feedback on positioning accuracy, ensuring that the deviation between the centerline of the battery pack 12 and the reference axis of the inspection frame is ≤±1.5mm. When the battery pack 12 triggers the high-precision diffuse reflection photoelectric switch 4, the control system immediately cuts off the power supply to the conveyor belt 10 and implements dynamic braking using an electromagnetic brake, ensuring that the conveyor belt 10 is completely stationary within 200ms, avoiding positioning errors caused by inertial displacement. Step 2: Positioning and buffering the detection frame: The hydraulic push rod 54 in the position adjustment assembly 5 is controlled by a closed-loop proportional valve, driving the detection frame vertically downward at a constant rate of 0.05 m / s. A displacement sensor is installed on the detection frame to monitor the stroke in real time. When the lower end face of the detection frame is 10 mm away from the upper shell of the battery pack 12, the displacement sensor switches to a low-speed mode (0.01 m / s) to implement a soft landing buffer mechanism. The third step is to align the degree of freedom probe and accurately position the XY axis: the detection frame realizes automatic positioning of the thermal probe through its integrated precision motion control system. Specifically, the servo-driven wheel motor 81 realizes X-axis motion in the guide groove of the sliding guide mechanism (positioning accuracy ±0.02mm), and at the same time adjusts the telescopic tube 63 in the telescopic sleeve assembly 6 to complete the Y-axis displacement (stroke error ≤±0.03mm). The two-axis linkage control adopts a closed-loop PID algorithm, combined with the machine vision positioning module, to drive the nozzle on the hot air nozzle 83 to accurately align the thermal probes on the temperature collection harness of the battery pack 12 in a vertical incidence manner (angle deviation <0.5°). The entire alignment process is completed within 200ms, and the position error is controlled within 10% of the probe diameter (i.e. ≤0.5mm), ensuring the accuracy of the subsequent temperature rise test. At the same time, the system feeds back the position data of each axis to the PLC controller in real time, and records the dynamic parameters during the alignment process for later detection and tracing. Step 4: Thermal Probe Function Testing and Fault Diagnosis: The analysis and control system 9 precisely controls the output power of the hot air nozzle 83 using a PID algorithm, performing a step-by-step heating test on the thermal probe array according to a preset temperature gradient (25°C → 50°C → 75°C). The analysis and control system 9 monitors the response characteristics of each probe in real time. When heating probe No. n, the high-precision data acquisition module (sampling rate 1kHz) synchronously detects its resistance change (ΔR / R0) and temperature rise curve (dT / dt). A test is considered qualified if the following conditions are met: the resistance decay rate matches the theoretical B value constant (3435K ± 1%); the temperature rise response delay between adjacent thermal probes is ≤ 100ms; and there is no cross-interference between the signals of each channel (isolation > 60dB). For abnormal operating conditions (such as no resistance change, nonlinear jumps, or channel crosstalk), the system automatically records the fault. Step 5: Processing test results and resetting the device: After completing the temperature sensing system test, the analysis and control system 9 executes the following automated process based on the test data: If the resistance-temperature response characteristics of the thermistor probe are detected to be outside the preset tolerance range (ΔR / R0 < ±5%), the analysis and control system 9 will immediately trigger an NG (failure) judgment, generate a quality report containing the faulty probe ID, deviation type, and recommended corrective measures, and automatically push it to the maintenance station through the MES (Manufacturing Execution System). If all test points pass verification, the hydraulic servo system (position adjustment component 5) will raise the test frame to a safe height (Z = 300 mm) at a rate of 0.1 m / s. At this time, the photoelectric switch 4 will reactivate and send a ready signal to the PLC. The conveyor belt 10 will resume operation after a 500 ms delay, transporting the qualified battery pack 12 to the next process station (such as laser marking or packaging). At the same time, the system log records the complete test parameters (including the temperature rise curve of each probe, the test timestamp, and the operator ID) for traceability.

[0022] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. They can also be used in products of other different fields and different structures. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, it should be understood that although this specification is described in terms of implementation methods, not each implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An integrated battery pack temperature acquisition harness rapid detection device, characterized in that: It includes a fixed bracket (1), a crossbeam (2), a transverse slide rail (3), a photoelectric switch (4), a position adjustment component (5), a telescopic sleeve component (6), a horizontal guide rail component (7), a hot air mechanism (8) and an analysis and control system (9); The bottom of the fixed bracket (1) is arranged on the working ground, a crossbeam (2) is installed on the fixed bracket (1), a transverse slide rail (3) adapted for the installation of the position adjustment component (5) is fixedly installed on the crossbeam (2), and the position adjustment component (5) is slidably installed on the transverse slide rail (3) to drive the telescopic sleeve component (6) to move and adjust; A telescopic sleeve assembly (6) that can be telescopically adjusted is provided at the lower part of the position adjustment assembly (5), and the telescopic sleeve assembly (6) is connected to the position adjustment assembly (5) by bolts. A horizontal guide rail assembly (7) is installed on the telescopic sleeve assembly (6), and the horizontal guide rail assembly (7) is fastened to the telescopic sleeve assembly (6). The horizontal guide rail assembly (7) is used to carry and guide the hot air mechanism (8); the telescopic sleeve assembly (6), the horizontal guide rail assembly (7) and the hot air mechanism (8) constitute a detection frame structure. The hot air mechanism (8) is used to generate hot air for heating the battery pack (12). The hot air mechanism (8) is arranged on the horizontal guide rail assembly (7) and can be adjusted in position on the horizontal guide rail assembly (7). The analysis and control system (9) is connected to the photoelectric switch (4), the position adjustment assembly (5), the telescopic sleeve assembly (6) and the hot air mechanism (8) via a data line to form a rapid detection device for detecting the temperature collection harness of the battery pack (12).

2. The integrated battery pack temperature acquisition harness rapid detection device according to claim 1, characterized in that: A polyurethane buffer gasket (11) is provided at the bottom of the detection frame. The polyurethane buffer gasket (11) has a Shore A hardness of 50 and can absorb 90% of the impact kinetic energy, thereby preventing the detection frame from damaging or deforming the outer shell of the battery pack (12).

3. The integrated battery pack temperature acquisition harness rapid detection device according to claim 2, characterized in that: A conveyor belt (10) is arranged on the lower side of the crossbeam (2) between the fixed brackets (1), a battery pack (12) to be detected is arranged on the conveyor belt (10), a thermal probe is arranged on the battery pack (12), the conveyor belt (10) is used to drive the battery pack (12) for detection and transportation, the thermal probe is used to sense and check the temperature of the battery pack (12), and a photoelectric switch (4) for detecting the position of the battery pack (12) is installed at the bottom of the crossbeam (2).

4. The integrated battery pack temperature acquisition harness rapid detection device according to claim 1, characterized in that: The position adjustment assembly (5) includes a transverse slider (51), a column sleeve (52), a working hydraulic cylinder (53), a hydraulic push rod (54), and a synchronous mounting frame (55); the transverse slider (51) is slidably engaged on the transverse slide rail (3), the column sleeve (52) is mounted on the transverse slider (51) by bolts, the column sleeve (52) is mounted with a working hydraulic cylinder (53) and a vertical slider, vertical slide rails are mounted on both sides of the synchronous mounting frame (55), the vertical slide rails are in sliding contact with the vertical slide rails, a hydraulic push rod (54) is mounted on the working hydraulic cylinder (53), the outer end of the hydraulic push rod (54) is connected to the synchronous mounting frame (55) and drives the synchronous mounting frame (55) to rise and fall.

5. The integrated battery pack temperature acquisition harness rapid detection device according to claim 1, characterized in that: The telescopic sleeve assembly (6) includes a fixed sleeve (61), a sleeve fixing frame (62) and a telescopic tube (63); the sleeve fixing frame (62) is connected to the synchronous mounting frame (55) for fixing the fixed sleeve (61); the fixed sleeve (61) is mounted on the sleeve fixing frame (62); a mounting hole is provided in the fixed sleeve (61); the telescopic tube (63) is mounted in the mounting hole on the fixed sleeve (61) and can be telescopically adjusted in the mounting hole.

6. The integrated battery pack temperature acquisition harness rapid detection device according to claim 5, characterized in that: The horizontal guide rail assembly (7) includes a fixed seat (71) and a guide rail frame (72). The fixed seat (71) is fixedly mounted on the fixed sleeve (61) and the telescopic tube (63). The guide rail frame (72) is provided at the lower part of the fixed seat (71). The guide rail frame (72) is connected to the fixed seat (71) by connecting bolts. A semi-open horizontal guide rail groove (73) is provided on the side of the guide rail frame (72). The hot air mechanism (8) is installed in the guide rail groove and can be displaced and adjusted in the guide rail groove.

7. The integrated battery pack temperature acquisition harness rapid detection device according to claim 1, characterized in that: The hot air mechanism (8) includes a wheel motor (81), a connector (82) and a hot air nozzle (83). The wheel motor (81) is arranged in the guide rail groove and can be displaced and adjusted in the guide rail groove. The wheel motor (81) is connected to the hot air nozzle (83) through the connector (82) and drives the hot air nozzle (83) to achieve adaptive position adjustment. The hot air nozzle (83) is externally connected to a hot air source for blowing hot air to the upper part of the battery pack (12) to achieve temperature detection of the thermal probe.

8. The integrated battery pack temperature acquisition harness rapid detection device according to any one of claims 1 to 6, characterized in that: The specific operation of the detection device includes the following steps: The first step is to position and interrupt the transmission of the battery pack (12): the conveyor belt (10) is driven by an external servo motor to accurately transmit the battery pack (12) to be inspected along the conveying track to the preset inspection station; the positioning accuracy is fed back in real time by the encoder to ensure that the deviation between the center line of the battery pack (12) and the reference axis of the inspection frame is ≤±1.5mm; when the battery pack (12) triggers the high-precision diffuse reflection photoelectric switch (4), the control system immediately cuts off the power supply of the conveyor belt (10) and realizes dynamic braking through the electromagnetic brake to ensure that the conveyor belt (10) is completely stationary within 200ms, thereby avoiding positioning errors caused by inertial displacement; Step 2: Positioning and buffering protection of the detection frame: The hydraulic push rod (54) in the position adjustment component (5) is controlled by a closed-loop proportional valve to drive the detection frame to descend vertically at a constant rate of 0.05 m / s; a displacement sensor is installed on the detection frame to monitor the stroke in real time. When the lower end face of the detection frame is 10 mm away from the upper shell of the battery pack (12), the displacement sensor switches to a low-speed mode (0.01 m / s) to achieve a soft landing buffer mechanism; Step 3: Alignment of the degree of freedom probe and precise positioning in the XY axis: The detection frame realizes automatic positioning of the thermal probe through its integrated precision motion control system; specifically, the servo-driven wheel motor (81) realizes X-axis motion (positioning accuracy ±0.02mm) in the guide groove of the sliding guide mechanism, and at the same time adjusts the telescopic tube (63) in the telescopic sleeve assembly (6) to complete the Y-axis displacement (stroke error ≤±0.03mm); the nozzle on the hot air nozzle (83) is driven to accurately align the thermal probes on the temperature collection harness of the battery pack (12) in a vertical incidence manner (angle deviation <0.5°); the entire alignment process is completed within 200ms, and the position error is controlled within 10% of the probe diameter (i.e., ≤0.5mm), ensuring the accuracy of the subsequent temperature rise test; Step 4: Functional testing and fault diagnosis of thermal probes: The analysis and control system (9) accurately controls the output power of the hot air nozzle (83) through the PID algorithm, and performs a step-by-step heating test on the thermal probe array according to the preset temperature gradient (25°C → 50°C → 75°C); The analysis and control system (9) monitors the response characteristics of each probe in real time: When the nth probe is heated, the high-precision data acquisition module (sampling rate 1kHz) synchronously detects its resistance change (ΔR / R0) and temperature rise curve (dT / dt). If the following conditions are met, it is judged to be qualified: the resistance attenuation rate matches the theoretical B value constant (3435K±1%); the temperature rise response delay between adjacent thermal probes is ≤100ms; there is no cross-interference between the signals of each channel (isolation>60dB); Step 5. Processing of test results and device reset: After completing the temperature sensing system test, the analysis and control system (9) executes the following automated process based on the test data: If it is detected that the resistance-temperature response characteristics of the thermistor probe do not meet the preset tolerance range (ΔR / R0< ±5%), the analysis and control system (9) will immediately trigger a non-conformity judgment, generate a quality report containing the faulty probe ID, deviation type and recommended corrective measures, and automatically push it to the maintenance station through the MES; if all test points pass the verification, the position adjustment component (5) will lift the test frame to a safe height (Z=300mm) at a rate of 0.1 m / s. At this time, the photoelectric switch (4) will be reactivated and a ready signal will be sent to the PLC. The conveyor belt (10) will resume operation after a 500ms delay and transport the qualified battery pack (12) to the next process station.

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