New energy vehicle BDU resistance test device and method

Abstract

The invention relates to the technical field of new energy vehicles, and discloses new energy vehicle BDU resistance test equipment, which comprises a working box, a detection tray, a detection frame and a speed chain conveying bearing platform, a vertical position adjusting assembly is installed at the top of the detection frame, a tray jacking assembly is installed on the speed chain conveying bearing platform, the detection frame is located in the working box, and the detection tray is located in the working box. The bottom of the vertical position adjusting assembly penetrates through the top plate of the detection frame and is provided with a connecting plate. According to the resistance test equipment and method for the new energy vehicle BDU, a vertical position adjusting assembly, a first detection module and a second detection module are arranged, a telescopic electric cylinder of the vertical position adjusting assembly is controlled to drive the first detection module to descend, and a plurality of first probes on the first detection module make contact with BDU test points; and the lower tool jacking cylinder jacks the mounting plate to rise to drive a plurality of second probes on the second detection module to be in contact with the BDU test points, so that the resistor can be rapidly detected, and the operation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a resistance testing device and method for a BDU of a new energy vehicle. Background Art

[0002] The BDU in new energy batteries stands for Battery Disconnect Unit, which can also be called Battery Energy Distribution Unit. It is an important component in the battery system of new energy vehicles. The BDU contains components such as relays, pre-charge resistors, and current sensors. It mainly controls the opening and closing of current and the direction of flow to ensure the safety of battery voltage. It also connects to the motor control system, DC / DC and BMS (battery management system) for energy distribution to ensure the stable operation of the entire battery system. In the battery pack, BDU, BMS, BIC, BMU, etc. together constitute a complex battery management system to jointly monitor, manage and protect the safety and performance of the battery. BDU has the function of quickly disconnecting the battery from the vehicle circuit in emergency situations such as collision and short circuit to prevent safety accidents. It is an important protection module of the high-voltage circuit system of electric vehicles and an important part of the vehicle control system.

[0003] After the battery disconnect unit is assembled, the resistance needs to be tested. Currently, single-point testing is performed manually using a handheld test lead. This test is simple, prone to missed and false measurements, and has low test efficiency. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a resistance testing device and method for the BDU of a new energy vehicle, which solves the problems mentioned in the above background.

[0005] The present invention provides the following technical solutions: resistance testing equipment for the BDU of new energy vehicles, comprising: a working box, a detection pallet, a detection frame and a double-speed chain conveying platform, a vertical position adjustment component is installed on the top of the detection frame, and a pallet lifting component is installed on the double-speed chain conveying platform, the detection frame is located inside the working box, the bottom of the vertical position adjustment component passes through the top plate of the detection frame and is installed with a connecting plate, a substation module is installed on the top of the detection frame, a partition is provided inside the detection frame, and a master station module is respectively installed on the partition, an electrical measuring tool read-write head is installed on the top of the connecting plate, a first detection module is provided at the bottom of the connecting plate, a second detection module is installed on the pallet lifting assembly, the pallet lifting assembly and the second detection module are both located below the first detection module, the detection pallet is connected to the double-speed chain conveying platform, and the detection pallet is located above the pallet lifting assembly.

[0006] Preferably, the vertical position adjustment component includes a telescopic electric cylinder and an accompanying cable, and the telescopic electric cylinder and the accompanying cable are both installed on the top of the detection frame top plate, the telescopic end of the telescopic electric cylinder is connected to the top of the connecting plate, and the movable end of the accompanying cable is connected to the first detection module.

[0007] Preferably, a guide assembly for guiding the connecting plate is installed on the top plate of the detection frame; The guide assembly comprises a guide sleeve mounted on the top plate of the detection frame and a guide rod slidably connected to the inner wall of the guide sleeve, wherein the bottom end of the guide rod is connected to the top end of the connecting plate.

[0008] Preferably, the first detection module includes a detection box, the connecting plate is installed on the top of the detection box, a plurality of high-current quick-change interfaces and a plurality of device connectors are installed on the surface of the detection box, a plurality of first detection needles are provided at the bottom of the detection box, a centering detection proximity switch is provided at the bottom of the detection box, and a centering detection proximity switch is provided at the bottom of the detection box.

[0009] Preferably, a pallet buffer table for placing the detection pallet is provided on the double-speed chain conveyor platform, a workpiece in-position photoelectric transmitting end is provided on one side of the double-speed chain conveyor platform, a workpiece in-position photoelectric transmitting and receiving end is provided on the other side of the double-speed chain conveyor platform, and a first pallet in-position proximity switch and a pallet information read-write head are provided on the double-speed chain conveyor platform.

[0010] Preferably, the second detection module includes a lower tooling lifting cylinder, which is installed inside the working box. A mounting plate is installed on the lower tooling lifting cylinder, and a plurality of second detection pins are installed on the top of the mounting plate.

[0011] Preferably, the pallet lifting assembly includes a mounting frame, a pallet lifting cylinder is installed on the mounting frame, a lifting plate is installed at the telescopic end of the pallet lifting cylinder, a through groove is opened on the surface of the lifting plate, and the inner wall of the through groove is movably connected to the surface of the mounting plate.

[0012] Preferably, valve islands for distributing air sources to the lower tooling lifting cylinder and the pallet lifting cylinder are respectively installed on the partitions, and a plurality of solenoid valves are connected to the valve islands.

[0013] The resistance test method of the BDU of new energy vehicles includes the following steps: Step S1: Detecting the positioning of the pallet. The pallet enters the detection area. The pallet proximity switch confirms that the pallet is in place. The pallet information read / write head reads the pallet information. The workpiece in place photoelectric transmitter and the workpiece in place photoelectric receiver detect the workpiece and confirm that it is in place. The pallet lifting cylinder is activated to lift the pallet to the detection position. Step S2: The first detection module and the second detection module contact the interface, controlling the telescopic electric cylinder of the vertical position adjustment assembly to drive the first detection module to descend, and the multiple first detection pins on the first detection module contact the BDU test points; The lower tooling lifting cylinder lifts the mounting plate upward, driving multiple second detection pins on the second detection module to contact the BDU test points; Step S3: Contact resistance and insulation resistance test: activate the high-voltage circuit through the master module and measure the contact resistance, insulation resistance to ground and low-voltage control circuit resistance; Step 4: Dynamic verification and data upload, upload the test data; Step 5: Reset and safe exit. The telescopic electric cylinder of the vertical position adjustment component drives the first detection module to rise and reset, and the lower tooling lifting cylinder drives the second detection module to descend and reset. If the insulation resistance or contact resistance is detected to be out of limit, an audible and visual alarm is triggered and the pallet is locked.

[0014] Preferably, in step 2: when the first detection module descends, the connecting plate drives the guide rod to move, the guide rod is slidably connected to the inner wall of the guide sleeve, and the first detection module is constrained by the guide assembly to avoid lateral deviation.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention sets a vertical position adjustment component, a first detection module and a second detection module, controls the telescopic electric cylinder of the vertical position adjustment component to drive the first detection module to descend, and multiple first detection pins on the first detection module contact with the BDU test point. The lower tooling lifting cylinder lifts the mounting plate upward, driving the multiple second detection pins on the second detection module to contact with the BDU test point, which can quickly detect resistance and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a structural diagram of the first detection module of the present invention; Figure 3 This is a structural diagram of the second detection module of the present invention; Figure 4 This is a schematic diagram of the valve island structure of the present invention; Figure 5 This is a schematic diagram of the structure of the double-speed chain conveying platform of the present invention; Figure 6 Schematic diagram of the detection process of the present invention.

[0017] Figure: 1. Work box; 2. Inspection tray; 3. Inspection frame; 4. Double-speed chain conveyor platform; 5. Vertical position adjustment assembly; 51. Telescopic electric cylinder; 52. Traveling cable; 6. Pallet lifting assembly; 61. Mounting frame; 62. Pallet lifting cylinder; 63. Lifting plate; 7. Connecting plate; 8. Substation module; 9. Partition; 10. Master station module; 11. Read / write head for electrical test fixture; 12. First inspection module; 121. Inspection box; 122. High-current quick-change interface. 123. Equipment connector; 124. First detection pin; 13. Second detection module; 131. Lower tool lifting cylinder; 132. Mounting plate; 133. Second detection pin; 14. Guide assembly; 141. Guide sleeve; 142. Guide rod; 15. Pallet buffer table; 16. Workpiece in-position photoelectric transmitter; 17. Workpiece in-position photoelectric transmitter and receiver; 18. Pallet in-position proximity switch; 19. Pallet information read / write head; 20. Valve island; 21. Solenoid valve. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-6 The resistance testing equipment of the BDU of new energy vehicles includes: a working box 1, a detection pallet 2, a detection frame 3 and a double-speed chain conveying platform 4. The top of the detection frame 3 is installed with a vertical position adjustment component 5, and the double-speed chain conveying platform 4 is installed with a pallet lifting component 6. The detection frame 3 is located inside the working box 1, and the bottom of the vertical position adjustment component 5 passes through the top plate of the detection frame 3 and is installed with a connecting plate 7. The top of the detection frame 3 is installed with a substation module 8, and the interior of the detection frame 3 is provided with a partition 9, and the partition 9 is respectively installed with a master station module 10. The top of the connecting plate 7 is installed with an electrical measuring tooling read-write head 11, and the bottom of the connecting plate 7 is provided with a first detection module 12. The second detection module 13 is installed on the pallet lifting component 6, and the pallet lifting component 6 and the second detection module 13 are both located below the first detection module 12. The detection pallet 2 is connected to the double-speed chain conveying platform 4, and the detection pallet 2 is located above the pallet lifting component 6.

[0020] The vertical position adjustment assembly 5 includes a telescopic electric cylinder 51 and an accompanying cable 52. The telescopic electric cylinder 51 and the accompanying cable 52 are both installed on the top of the top plate of the detection frame 3. The telescopic end of the telescopic electric cylinder 51 is connected to the top of the connecting plate 7, and the moving end of the accompanying cable (52) is connected to the first detection module 12.

[0021] A guide assembly 14 for guiding the connecting plate 7 is installed on the top plate of the detection frame 3. The guide assembly 14 includes a guide sleeve 141 installed on the top plate of the detection frame 3 and a guide rod 142 slidably connected to the inner wall of the guide sleeve 141. The bottom end of the guide rod 142 is connected to the top of the connecting plate 7.

[0022] The first detection module 12 includes a detection box 121, the connecting plate 7 is installed on the top of the detection box 121, and the surface of the detection box 121 is respectively installed with multiple high-current quick-change interfaces 122 and multiple device connectors 123. The bottom of the detection box 121 is provided with multiple first detection needles 124.

[0023] A pallet buffer platform 15 for placing the detection pallet 2 is provided on the double-speed chain conveyor platform 4, a workpiece in-position photoelectric transmitting end 16 is provided on one side of the double-speed chain conveyor platform 4, and a workpiece in-position photoelectric transmitting and receiving end 17 is provided on the other side of the double-speed chain conveyor platform 4, and a first pallet in-position proximity switch 18 and a pallet information read-write head 19 are provided on the double-speed chain conveyor platform 4.

[0024] The second detection module 13 includes a lower tooling lifting cylinder 131 , which is installed inside the working box 1 . A mounting plate 132 is installed on the lower tooling lifting cylinder 131 , and a plurality of second detection pins 133 are installed on the top of the mounting plate 132 .

[0025] The pallet lifting assembly 6 includes a mounting frame 61, on which a pallet lifting cylinder 62 is installed. A lifting plate 63 is installed at the telescopic end of the pallet lifting cylinder 62. A through groove is provided on the surface of the lifting plate 63, and the inner wall of the through groove is movably connected to the surface of the mounting plate 132.

[0026] Valve islands 20 for distributing air sources to the lower tooling lifting cylinder 131 and the pallet lifting cylinder 62 are respectively installed on the partition plate 9 , and a plurality of solenoid valves 21 are connected to the valve islands 20 .

[0027] The resistance test method of the BDU of new energy vehicles includes the following steps: Step S1: The detection tray 2 is positioned. The detection tray 2 enters the detection area. The tray in-position proximity switch 18 confirms that the detection tray 2 is in position. The tray information read / write head 19 reads the detection tray 2 information. The workpiece in-position photoelectric transmitter 16 and the workpiece in-position photoelectric receiver 17 detect the workpiece and confirm that it is in position. The tray lifting cylinder 62 is activated to lift the detection tray 2 to the detection position. Step S2: The first detection module 12 and the second detection module 13 are in contact with the interface, and the telescopic electric cylinder 51 of the vertical position adjustment assembly 5 is controlled to drive the first detection module 12 to descend, so that the multiple first detection pins 124 on the first detection module 12 are in contact with the BDU test points; The lower tooling lifting cylinder 131 lifts the mounting plate 132 upward, driving the multiple second detection pins 133 on the second detection module 13 to contact the BDU test points; Step S3: Contact resistance and insulation resistance test: activate the high-voltage circuit through the master station module 10 and measure the contact resistance, insulation resistance to ground and low-voltage control circuit resistance; Step 4: Dynamic verification and data upload, upload the test data; Step 5: Reset and safe exit. Control the telescopic electric cylinder 51 of the vertical position adjustment component 5 to drive the first detection module 12 to rise and reset. The lower tooling lifting cylinder 131 drives the second detection module 13 to descend and reset. If the insulation resistance or contact resistance is detected to be out of limit, the sound and light alarm is triggered and the pallet is locked.

[0028] Step 2: When the first detection module 12 descends, the connecting plate 7 drives the guide rod 142 to move. The guide rod 142 is slidably connected to the inner wall of the guide sleeve 141. The first detection module 12 is constrained by the guide assembly 14 to avoid lateral deviation.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0030] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. Resistance test equipment for new energy vehicle BDU, characterized by: include: A working box (1), a detection tray (2), a detection frame (3) and a double-speed chain conveying support (4), a vertical position adjustment component (5) is installed on the top of the detection frame (3), a pallet lifting component (6) is installed on the double-speed chain conveying support (4), the detection frame (3) is located inside the working box (1), the bottom of the vertical position adjustment component (5) passes through the top plate of the detection frame (3) and is installed with a connecting plate (7), a substation module (8) is installed on the top of the detection frame (3), and a partition (9) is provided inside the detection frame (3) , a master station module (10) is respectively installed on the partition (9), an electric measuring tool read / write head (11) is installed on the top of the connecting plate (7), a first detection module (12) is provided at the bottom of the connecting plate (7), a second detection module (13) is installed on the pallet lifting assembly (6), the pallet lifting assembly (6) and the second detection module (13) are both located below the first detection module (12), the detection pallet (2) is connected to the double-speed chain conveying platform (4), and the detection pallet (2) is located above the pallet lifting assembly (6).

2. The resistance test equipment for the new energy vehicle BDU according to claim 1, characterized in that: The vertical position adjustment assembly (5) includes a telescopic electric cylinder (51) and an accompanying cable (52), wherein the telescopic electric cylinder (51) and the accompanying cable (52) are both mounted on the top of the top plate of the detection frame (3), the telescopic end of the telescopic electric cylinder (51) is connected to the top of the connecting plate (7), and the movable end of the accompanying cable (52) is connected to the first detection module (12).

3. The resistance testing equipment for the new energy vehicle BDU according to claim 1, characterized in that: A guide assembly (14) for guiding the connecting plate (7) is installed on the top plate of the detection frame (3); The guide assembly (14) comprises a guide sleeve (141) mounted on the top plate of the detection frame (3) and a guide rod (142) slidably connected to the inner wall of the guide sleeve (141), wherein the bottom end of the guide rod (142) is connected to the top end of the connecting plate (7).

4. The resistance testing equipment for the new energy vehicle BDU according to claim 1, characterized in that: The first detection module (12) includes a detection box (121), the connection plate (7) is installed on the top of the detection box (121), a plurality of high-current quick-change interfaces (122) and a plurality of device connectors (123) are respectively installed on the surface of the detection box (121), and a plurality of first detection pins (124) are provided on the bottom of the detection box (121).

5. The resistance testing equipment for the new energy vehicle BDU according to claim 1, characterized in that: The double-speed chain conveying platform (4) is provided with a pallet buffer platform (15) for placing the detection pallet (2), a workpiece in-position photoelectric transmitting end (16) is provided on one side of the double-speed chain conveying platform (4), and a workpiece in-position photoelectric transmitting and receiving end (17) is provided on the other side of the double-speed chain conveying platform (4), and a first pallet in-position proximity switch (18) and a pallet information reading and writing head (19) are provided on the double-speed chain conveying platform (4).

6. The resistance testing equipment for the new energy vehicle BDU according to claim 1, characterized in that: The second detection module (13) includes a lower tooling lifting cylinder (131), which is installed inside the working box (1). A mounting plate (132) is installed on the lower tooling lifting cylinder (131), and a plurality of second detection pins (133) are installed on the top of the mounting plate (132).

7. The resistance testing equipment for the new energy vehicle BDU according to claim 6, characterized in that: The pallet lifting assembly (6) includes a mounting frame (61), a pallet lifting cylinder (62) is mounted on the mounting frame (61), a lifting plate (63) is mounted on the telescopic end of the pallet lifting cylinder (62), a through groove is formed on the surface of the lifting plate (63), and the inner wall of the through groove is movably connected to the surface of the mounting plate (132).

8. The resistance testing equipment for the new energy vehicle BDU according to claim 7, characterized in that: The partition (9) is respectively provided with a valve island (20) for distributing air sources to the lower tooling lifting cylinder (131) and the pallet lifting cylinder (62), and a plurality of solenoid valves (21) are connected to the valve island (20).

9. Resistance test method of new energy vehicle BDU, characterized in that: The following steps are involved: Step S1: The detection tray (2) is positioned, the detection tray (2) enters the detection area, the tray in-position proximity switch (18) confirms that the detection tray (2) is in position, the tray information read / write head (19) reads the detection tray (2) information, the workpiece in-position photoelectric transmitting end (16) and the workpiece in-position photoelectric transmitting and receiving end (17) detect the workpiece and confirm that it is in position, and the tray lifting cylinder (62) is started to lift the detection tray (2) to the detection position; Step S2: The first detection module (12) and the second detection module (13) are in contact with the interface, the telescopic electric cylinder (51) of the vertical position adjustment component (5) is controlled to drive the first detection module (12) to descend, and the plurality of first detection pins (124) on the first detection module (12) are in contact with the BDU test points; The lower tooling lifting cylinder (131) lifts the mounting plate (132) upward, driving the plurality of second detection pins (133) on the second detection module (13) to contact the BDU test points; Step S3: Contact resistance and insulation resistance test, activating the high voltage circuit through the master station module (10), measuring the contact resistance, insulation resistance to ground and low voltage control circuit resistance; Step 4: Dynamic verification and data upload, upload the test data; Step 5: Reset and safe exit, control the telescopic electric cylinder (51) of the vertical position adjustment component (5) to drive the first detection module (12) to rise and reset, and the lower tooling lifting cylinder (131) drives the second detection module (13) to descend and reset. If the insulation resistance or contact resistance is detected to be out of limit, the sound and light alarm is triggered and the pallet is locked.

10. The resistance testing method of the BDU of a new energy vehicle according to claim 9, characterized in that: In step 2, when the first detection module (12) descends, the connecting plate (7) drives the guide rod (142) to move, and the guide rod (142) is slidably connected to the inner wall of the guide sleeve (141). The first detection module (12) is constrained by the guide assembly (14) to avoid lateral deviation.

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