Double-track on-line automatic test board

Abstract

The invention discloses a double-track on-line automatic test board, which comprises at least two feeding tracks, an automatic picking and transferring assembly, at least two automatic on-line detection assemblies and an unqualified product storage table, and is characterized in that the applicable width of the feeding tracks is adjusted according to a BMU module or an HVU module; comprising a fixed feeding rail, a movable feeding rail, a feeding belt driven by a transmission piece, an electric lead screw pair for adjusting the distance and a guide rod and guide sleeve assembly with the two ends controlling linear sliding, and the automatic picking and transferring assembly comprises a transverse sliding table, a longitudinal sliding table, a vertical electric lead screw, a clamping air cylinder and a position sensor. The automatic online detection assembly comprises a test carrier plate, a plugging assembly and a rotary pressing assembly, the dual-track online automatic test bench assembles a plurality of BMU modules or HVU modules to be tested into the adaptive test assembly according to needs through a modular design, the replaceability is high, the corresponding modules are automatically identified and automatically transferred to the adaptive test assembly, the detection efficiency is high, and the test efficiency is high. And the testing efficiency of the BMS module is fully improved.

Description

Technical Field

[0001] The invention relates to the field of automated testing equipment, and in particular to a dual-track online automated testing platform. Background Art

[0002] The battery management unit (BMU) and high voltage controller (HVU) are the core components of the battery management system (BMS). The main function of the BMU is to collect information such as battery cell voltage and temperature, perform active balancing management, thermal management in the battery pack, and communicate with the battery cluster management through the CAN communication interface. BMU products usually have the following main functions and features:

[0003] 1) Voltage monitoring: Accurately measure the voltage of each battery cell to ensure that the battery operates within a safe voltage range to prevent overcharging and over-discharging;

[0004] 2) Internal resistance monitoring: monitor the charge and discharge current through the current sensor to prevent overload and damage to the battery;

[0005] 3) Temperature monitoring: Built-in temperature sensors monitor the temperature inside the battery pack and the cells to prevent the battery from overheating or overcooling.

[0006] The HVU is responsible for monitoring and managing the safe and stable operation of the high-voltage system. The HVU module plays a vital role in new energy vehicles, ensuring the safe operation of the vehicle under high-voltage environment and effectively managing the working status of the battery and other high-voltage components. The main functions of the HVU module include:

[0007] 1) Monitor the voltage and current of the high voltage system to ensure that the system operates within a safe range;

[0008] 2) Protect the system from overload and short circuit, and prevent damage to batteries and other high-voltage components;

[0009] 3) Manage the battery charging and discharging process to optimize battery life and performance;

[0010] 4) Provide fault diagnosis function to timely detect and deal with potential problems in the system to ensure driving safety.

[0011] As the development of the new energy vehicle market gradually accelerates, the safety of vehicle-mounted battery pack electronic control has become a hot topic worldwide. Major automobile OEMs are also competing in battery pack safety technology competitions. In order to seize the new energy vehicle market, they attach great importance to the technical control of the safety, stability, reliability, performance and other elements of each electronic control module in the BMS. At the same time, the BMS equipped for each new energy vehicle must be monitored and tested one by one to ensure the safety and reliability of driving on the road after leaving the factory. In order to implement the technical requirements of full detection of mass-produced BMU modules and HVU modules, it is necessary to design an automatic detection equipment to improve the efficiency of power-on simulation detection of the two modules to ensure the safety and reliability of the performance of each module before installation. Summary of the invention

[0012] The purpose of the present invention is: in order to implement the technical requirements of full detection of BMU modules and HVU modules produced in batches, it is necessary to design an automatic detection equipment to improve the efficiency of power-on simulation detection of the two modules to ensure the safety and reliability of the performance of each module before loading. We design and propose a dual-track online automatic test bench.

[0013] The technical solutions adopted to solve the above problems are:

[0014] A double-track online automatic test bench, comprising at least two feeding tracks, an automatic pick-up transfer component, at least two automatic online detection components and a defective product storage table,

[0015] The feed track can adjust the applicable width according to the BMU module or HVU module to be fed, and includes a fixed feed track, a movable feed track, a feed belt driven by a transmission member, an electric screw pair for adjusting the spacing, and a guide rod and guide sleeve assembly for controlling linear sliding at both ends. The feed belt is installed through a guide wheel and laid flat on the inner side of the fixed feed track and the movable feed track to lift the BMU module or HVU module to be tested for feeding. The transmission member includes a transmission motor, a transmission belt, a transmission wheel and a transmission shaft. The screw sleeve of the electric screw pair is connected to the movable feed track, and under the rotation drive of the electric screw pair, the spacing between the movable feed track and the fixed feed track is adjusted. The guide rod and guide sleeve assembly limits the movable feed track to maintain flush displacement with the fixed feed track.

[0016] The automatic picking and transferring component includes a transverse slide, a longitudinal slide, a vertical electric screw, a clamping cylinder and a position sensor. The alternating and coordinated actions of the transverse slide, the longitudinal slide and the vertical electric screw drive the clamping cylinder to move within the space range. The position sensor is used to detect and capture the BMU module or HVU module to be tested on the feeding track below, and the model information of the module is identified based on the distance measurement perception. The clamping cylinder clamps and places it in the corresponding automatic online detection component to implement power-on simulation detection.

[0017] The automatic online detection component includes a test carrier, a plug-in component and a rotary pressing component. The four corners of the test carrier are provided with positioning blocks and positioning pins for cooperating with the BMU module or HVU module to be tested for positioning. The front end of the BMU module or HVU module is provided with a plug-in female head. The plug-in female head cooperates with the plug-in component for plugging to achieve electrical conduction. The plug-in component includes a plug-in male head facing the plug-in female head, and is driven by a push cylinder to achieve top plugging. The rotary pressing component is arranged above the plug-in component, and includes a rotating motor, a rotating shaft and a pressing arm. The pressing arm obtains the torque of the rotating motor and presses the lower plug-in female head into position to facilitate the plug-in female head and the plug-in component.

[0018] Furthermore, a nozzle assembly for blowing dust away from the BMU module or HVU module being fed is provided on one side of the feeding track to ensure that the module to be tested being fed is not contaminated.

[0019] Furthermore, detachable clamping claws are arranged on both sides of the clamping cylinder, and the clamping claws cooperate with the plug-in slide rail grooves fixedly connected to the telescopic rod of the clamping cylinder, and are plugged and positioned by limit pins and screwed and locked by bolts.

[0020] Furthermore, unqualified BMU modules or HVU modules detected by the automatic online detection component are grabbed by the automatic picking and transferring component and placed on the unqualified product storage table.

[0021] Furthermore, the plug-in component is electrically connected to a modularly designed pin module, the pin module includes a male pin head fixed on a workbench and a female pin head arranged on the side of an automatic online detection component, the automatic online detection component changes the version of the adapter test carrier board according to the type of the BMU module or HVU module to be tested, and the male pin head is connected to a test instrument.

[0022] The beneficial effects of the present invention are:

[0023] 1. The dual-track online automatic test bench adopts modular design to assemble various BMU modules or HVU modules to be tested with adaptive test components as needed. It has strong substitutability, automatically identifies corresponding modules, and automatically transfers to adaptive test components. It has high detection efficiency and fully improves the test efficiency of BMS modules.

[0024] 2. The conduction is achieved by plugging the female connector into the plug assembly, which simplifies the electrical connection scheme and makes the modular circuit control more concise. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a side plan view of the double-track online automatic test bench of the embodiment;

[0026] Figure 2It is a structural schematic diagram of the automatic picking and transferring assembly described in the embodiment;

[0027] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0028] Figure 4 A front plan view of the feed track according to the embodiment;

[0029] Figure 5 A rear top view of the feed track according to the embodiment;

[0030] Figure 6 A side elevation view of the automatic online detection assembly according to the embodiment;

[0031] Figure 7 It is a side plan view of the automatic online detection component of the embodiment with the housing removed;

[0032] Among them, 1-BMU module or HVU module to be tested, 2-feeding track, 3-automatic online detection component, 4-automatic picking and transfer component, 5-gripping cylinder, 6-defective product storage table, 7-horizontal slider rail assembly, 8-horizontal slide, 9-vertical electric screw, 10-longitudinal slider rail assembly, 11-gripping cylinder body, 12-telescopic rod, 13-position sensor, 14-bolt, 15-plug-in slide rail, 16-gripper, 17-gripped module, 1 8-module carrier, 19-movable feed rail, 20-nozzle assembly, 21-fixed feed rail, 22-cut-off cylinder, 23-screw screw sleeve, 24-guide sleeve, 25-guide rod, 26-screw pair, 27-screw pair motor, 28-drive shaft, 29-drive motor, 30-feed belt, 31-drive wheel, 32-rotating motor, 33-plug-in male head, 34-locating pin, 35-plug-in female head, 36-pressing arm, 37-pin module, 38-pin male head. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described in the following in the form of embodiments in conjunction with the accompanying drawings.

[0034] See also Figure 1 This embodiment proposes a dual-track online automatic testing platform, including two feeding tracks 2, an automatic picking and transferring component 4, two automatic online detection components 3 and a defective product storage table 6.

[0035] See also Figure 4 and Figure 5The feed track 2 can adjust the applicable width according to the BMU module or HVU module to be fed, and includes a fixed feed rail 21, a movable feed rail 19, a feed belt 30 driven by a transmission member, an electric screw pair 26 for adjusting the spacing, and a guide rod and guide sleeve assembly for controlling linear sliding at both ends. The feed belt 30 is set up through a guide wheel and laid flat on the inner side of the fixed feed rail 21 and the movable feed rail 19 to lift the BMU module or HVU module to be tested for feeding. The transmission member includes a transmission motor 29, a transmission belt, a transmission wheel 31 and a transmission shaft 28. The screw sleeve 23 of the electric screw pair 26 is connected to the movable feed rail 19, and under the rotation of the electric screw pair 26, the spacing between the movable feed rail 19 and the fixed feed rail 21 is adjusted. The guide rod and guide sleeve assembly limits the movable feed rail 19 to maintain a flush displacement with the fixed feed rail 21.

[0036] See also Figure 2 and Figure 3 The automatic picking and transferring component 4 includes a transverse slide 8, a longitudinal slide, a vertical electric screw 9, a clamping cylinder 5 and a position sensor 13. The alternating and coordinated actions of the transverse slide 8, the longitudinal slide and the vertical electric screw are used to drive the clamping cylinder 5 to move within the space. The position sensor 13 is used to detect and capture the BMU module or HVU module 1 to be tested on the feeding track 2 below, and the model information of the module is identified based on the distance measurement perception. The clamping cylinder 5 clamps and places it in the corresponding automatic online detection component 3 to implement power-on simulation detection.

[0037] See also Figure 6 , Figure 7 The automatic online detection component 3 includes a test carrier, a plug-in component and a rotary pressing component. The four corners of the test carrier are provided with positioning blocks and positioning pins 34 to cooperate with the BMU module or HVU module 1 to be tested for positioning. The front end of the BMU module or HVU module is provided with a plug-in female head 35. The plug-in female head 35 cooperates with the plug-in component to achieve electrical conduction. The plug-in component includes a plug-in male head 33 facing the plug-in female head 35, and is driven by a push cylinder to achieve top plug-in. The rotary pressing component is arranged above the plug-in component, including a rotating motor 32, a rotating shaft and a pressing arm 36. The pressing arm 36 obtains the torque of the rotating motor 32 to press and position the lower plug-in female head 35 to facilitate the plug-in female head 35 and the plug-in component.

[0038] See also Figure 4 A nozzle assembly 20 for blowing dust away from the BMU module or HVU module being fed is provided on one side of the feeding track 2 to ensure that the module to be tested being fed is not contaminated.

[0039] See also Figure 3Removable clamping jaws 16 are provided on both sides of the clamping cylinder 5. The clamping jaws 16 cooperate with the slot rails of the plug-in slide rails 15 fixedly connected to the telescopic rod 12 of the clamping cylinder 5, and are inserted and positioned by limit pins and screwed and locked by bolts 14.

[0040] A further implementation scheme is that the unqualified BMU modules or HVU modules detected by the automatic online detection component 3 are grabbed by the automatic picking and transfer component 4 and placed on the unqualified product storage table 6, and the qualified products continue to be placed on the feed track and transferred to the next process.

[0041] See also Figure 7 The plug-in component is electrically connected to a modularly designed pin module 37, and the pin module 37 includes a male pin 38 fixedly set on a workbench and a female pin set on the side of the automatic online detection component 3. The automatic online detection component 3 changes the version of the adapter test carrier according to the category of the BMU module or HVU module 1 to be tested. The male pin 38 is connected to the test instrument, and conduction is achieved by plugging the female pin and the plug-in component, which simplifies the electrical connection scheme and makes the modular circuit control more concise.

[0042] The above describes in detail the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes, modifications, substitutions and variations can be made within the knowledge scope of ordinary technicians in the field without departing from the spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A dual-track online automatic test bench, comprising at least two feeding tracks (2), an automatic pick-up transfer assembly (4), at least two automatic online detection assemblies (3) and a defective product storage table (6), characterized in that: The feed track (2) is adjusted to an applicable width according to the BMU module or HVU module to be fed, and comprises a fixed feed track (21), a movable feed track (19), a feed belt (30) driven by a transmission member, an electric screw pair (26) for adjusting the spacing, and a guide rod and guide sleeve assembly for controlling linear sliding at both ends. The automatic picking and transferring component (4) comprises a transverse slide (8), a longitudinal slide, a vertical electric screw (9), a clamping cylinder (5) and a position sensor (13). The transverse slide (8), the longitudinal slide and the vertical electric screw are used to drive the clamping cylinder (5) to move within a spatial range by means of the alternating and coordinated actions. The position sensor (13) is used to detect and capture the BMU module or HVU module (1) to be tested on the feeding track (2) below. The model information of the module is identified based on the distance measurement perception. The clamping cylinder (5) clamps and places the module in the corresponding automatic online detection component (3) to implement the power-on simulation detection. The automatic online detection component (3) comprises a test carrier, a plug-in component and a rotary pressing component. The four corners of the test carrier are provided with positioning blocks and positioning pins (34) for cooperating with the BMU module or HVU module (1) to be tested to implement positioning. The front end of the BMU module or HVU module is provided with a plug-in female head (35). The plug-in female head (35) cooperates with the plug-in component to achieve electrical conduction. The plug-in component comprises a plug-in male head (33) facing the plug-in female head (35), and is driven by a push cylinder to achieve top plugging.

2. The dual-track online automatic test bench according to claim 1 is characterized in that: The feeding belt (30) is installed via guide wheels and laid flat on the inner side of the fixed feeding rail (21) and the movable feeding rail (19) to lift and feed the BMU module or HVU module to be tested. The transmission member comprises a transmission motor (29), a transmission belt, a transmission wheel (31) and a transmission shaft (28).

3. The dual-track online automatic test bench according to claim 1 is characterized in that: The screw sleeve (23) of the electric screw pair (26) is connected to the movable feed rail (19), and the distance between the movable feed rail (19) and the fixed feed rail (21) is adjusted under the rotation of the electric screw pair (26). The guide rod and guide sleeve assembly limits the movable feed rail (19) to maintain flush displacement with the fixed feed rail (21).

4. The dual-track online automatic test bench according to claim 1 is characterized in that: The rotary pressing assembly is arranged above the plug-in assembly and comprises a rotary motor (32), a rotary shaft and a pressing arm (36). The pressing arm (36) obtains the torque force of the rotary motor (32) to press the lower plug-in female connector (35) into position.

5. The dual-track online automatic test bench according to claim 1 is characterized in that: A nozzle assembly (20) for blowing and removing dust from a BMU module or HVU module directly facing the feeding material is arranged on one side of the feeding track (2).

6. The dual-track online automatic test bench according to claim 1 is characterized in that: Removable clamping claws (16) are arranged on both sides of the clamping cylinder (5), and the clamping claws (16) cooperate with the slot rails of the plug-in slide rails (15) fixedly connected to the telescopic rod (12) of the clamping cylinder (5), and are inserted and positioned by limit pins, and are screwed and locked by bolts (14).

7. The dual-track online automatic test bench according to claim 1 is characterized in that: Unqualified BMU modules or HVU modules detected by the automatic online detection component (3) are picked up by the automatic picking and transferring component (4) and placed on the unqualified product storage table (6).

8. The dual-track online automatic test bench according to claim 1, characterized in that: The plug-in assembly is electrically connected to a modularly designed pin module (37), wherein the pin module (37) comprises a male pin head (38) fixedly arranged on a workbench and a female pin head arranged on the side of the automatic online detection assembly (3), wherein the automatic online detection assembly (3) changes the version of the adapter test carrier board according to the type of the BMU module or HVU module (1) to be tested, and the male pin head (38) is connected to a test instrument.

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