DC-DC detector

Abstract

The utility model provides a DC-DC detector, comprising a detector main body, one end of the detector main body is provided with four connecting lines, one end of each connecting line is connected with a high-voltage line switching box, a wire lapping clamp, a low-voltage power supply and a connector, and the other end of each connecting line is connected with a high-voltage line switching box, a wire lapping clamp, a low-voltage power supply and a connector. A high-voltage ammeter, a low-voltage ammeter, a high-voltage voltmeter, a high-voltage switch and a low-voltage switch are respectively arranged on the surface of the detector main body. According to the DC-DC detector provided by the utility model, the high-voltage wire switching box, the wire lapping clamp, the low-voltage power supply, the connector, the high-voltage ampere meter, the low-voltage ampere meter, the high-voltage voltmeter, the high-voltage switch and the low-voltage switch are respectively arranged on the detector main body with the four connecting wires. Fault elimination and position determination can be directly carried out through the detector main body, so that the convenience of bus maintenance can be improved, and the consumed time can be shortened.

Description

Technical Field

[0001] The utility model relates to the field of automobile fault detection, in particular to a DC-DC detector. Background Art

[0002] Car is a means of transportation.

[0003] Currently, cars with different functions are used in different industries. Buses are used for auxiliary transportation of personnel. However, after long-term use, the internal components of buses are prone to failure. When the DC / DC in the three-in-one controller of the bus fails, the bus needs to be driven to the factory for maintenance. However, when the bus is driven to the factory for maintenance, the use time of the entire car and the inconvenience caused by the maintenance will be increased.

[0004] Therefore, it is necessary to provide a DC-DC detector to solve the above technical problems. Utility Model Content

[0005] The utility model provides a DC-DC detector, which solves the problem that when a bus is driven to a production plant for overhaul, the time spent on the entire bus will be increased and the overhaul will cause inconvenience.

[0006] In order to solve the above technical problems, the utility model provides a DC-DC detector, comprising:

[0007] The detector body has four connecting wires at one end, and one end of the four connecting wires are respectively connected to a high-voltage line adapter box, a wire clamp, a low-voltage power supply and a connector; a high-voltage ammeter, a low-voltage ammeter, a high-voltage voltmeter, a high-voltage switch and a low-voltage switch are respectively arranged on the surface of the detector body.

[0008] Preferably, a power indicator light is provided on the surface of the detector body.

[0009] Preferably, the high-voltage ammeter, the low-voltage ammeter and the high-voltage voltmeter are used for viewing numerical display.

[0010] Preferably, the low-voltage power supply is connected to a power distribution box in a rear compartment of a vehicle.

[0011] Preferably, the connector is used to connect to the vehicle body grounding wire.

[0012] Preferably, a protection component is provided on the surface of the detector body, and the protection component includes two fixed blocks, a fixed rod is connected between the two fixed blocks, and a rotating frame is sleeved on the surface of the two fixed rods.

[0013] Preferably, a protective cover is connected between the two rotating frames.

[0014] Compared with the related art, the DC-DC detector provided by the utility model has the following beneficial effects:

[0015] The utility model provides a DC-DC detector. A high-voltage line adapter box, a line clamp, a low-voltage power supply, a connector, a high-voltage ammeter, a low-voltage ammeter, a high-voltage voltmeter, a high-voltage switch and a low-voltage switch are respectively arranged on a detector body with four connecting lines. When a DC / DC in a car fails, the fault can be directly eliminated and the position can be determined through the detector body, thereby improving the convenience and time consumed in bus maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a first embodiment of a DC-DC detector provided by the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the overall three-dimensional structure of the device shown;

[0018] Figure 3 for Figure 1 The schematic diagram of the structure of the upper surface of the detector body is shown.

[0019] Numbers in the figure: 1. Detector body, 2. Connection line, 3. High-voltage line adapter box, 4. Wire clip, 5. Low-voltage power supply, 6. Connector,

[0020] 7. High voltage ammeter, 8. Low voltage ammeter, 9. High voltage voltmeter, 10. High voltage switch, 11. Low voltage switch, 12. Power indicator light,

[0021] 13. Protective assembly, 131. Fixed block, 132. Fixed rod, 133. Rotating frame, 134. Protective cover. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0023] First embodiment

[0024] Please refer to Figure 1 and Figure 2 ,in, Figure 1 A schematic structural diagram of a first embodiment of a DC-DC detector provided by the utility model; Figure 2 for Figure 1 A DC-DC detector, comprising:

[0025] The detector body 1 has four connecting wires 2 at one end, and one ends of the four connecting wires 2 are respectively connected to a high-voltage line adapter box 3, a wire clamp 4, a low-voltage power supply 5 and a connector 6. A high-voltage ammeter 7, a low-voltage ammeter 8, a high-voltage voltmeter 9, a high-voltage switch 10 and a low-voltage switch 11 are respectively arranged on the surface of the detector body 1.

[0026] A power indicator light 12 is provided on the surface of the detector body 1 .

[0027] The high-voltage ammeter 7, the low-voltage ammeter 8 and the high-voltage voltmeter 9 are used for checking the numerical display.

[0028] The low voltage power supply 5 is connected to the power distribution box in the rear compartment of the vehicle.

[0029] The connector 6 is used to connect to the vehicle body grounding wire.

[0030] Combined with the actual implementation example: The DC / DC fault detector is connected to the port on the vehicle through the wiring harness to check the working conditions of the DC / DC. It mainly checks the actual working conditions of the high-voltage input bus voltage, current value and low-voltage output voltage and current value of the DC / DC to find the fault point and analyze the cause of the fault.

[0031] The main structures of the diagnostic instrument include: voltmeter, ammeter, current transformer, high-voltage adapter, power switch, shunt and indicator light.

[0032] The voltage and current are displayed in digital form on the working panel through the mutual inductor, which looks more intuitive.

[0033] The reference values ​​for this model are: high voltage 547V, current 2A; low voltage 27.8V, current 13.1A. If the high voltage voltmeter or ammeter has no value, and displays 0, it means that there is no power input to the high voltage bus. Check whether the DC / DC fuse or auxiliary contactor in the high voltage distribution box is normal. If the high voltage voltmeter and ammeter have values, and the low voltage voltmeter displays 24V, it means that the high voltage part is normal, and the DC / DC does not work. It can be judged that there is an internal fault in the DC / DC converter.

[0034] It can detect the vehicle on the spot, saving about 40 minutes of assembly time per unit. It can detect the repaired assembly parts to further improve the quality of the repaired assembly parts. The diagnostic instrument provides effective solutions for various fault diagnosis of DC / DC converters in the three-in-one controller of electric buses, assembly repair tests, and practical training.

[0035] The specific operation of the DC / DC fault detector is as follows:

[0036] Turn off the low-voltage power supply of the vehicle, unplug the high-voltage maintenance switch, and keep it properly.

[0037] Correctly connect the various connecting wires of the DC / DC tester, connect the DC / DC adapter box in series to the DC / DC high-voltage distribution cable, remove the 2# cable line of the rear compartment distribution box and connect it to the 5th input line of the low-voltage power supply of the tester, connect the output line of the low-voltage power supply of the tester to the 2# terminal of the rear compartment distribution box, and connect the grounding wire to the grounding wire of the vehicle body.

[0038] After the wiring harness is connected, install the high-voltage maintenance switch, turn on the low-voltage power supply 5, start the vehicle, and the power indicator light 12 lights up. By turning on the low-voltage switch and then the high-voltage switch, and observing the values ​​of the high-voltage ammeter 7, the low-voltage ammeter 8, and the high-voltage voltmeter 9, the working condition of the DC / DC converter can be judged.

[0039] Observe whether the high-voltage ammeter 7, low-voltage ammeter 8, and high-voltage voltmeter 9 have values. If they show 0, it means that there is no power input to the high-voltage busbar. Check the DC / DC fuse and auxiliary contactor in the high-voltage distribution box. If the high-voltage voltmeter and ammeter have values ​​and the low-voltage voltmeter shows 24V, it means that the high-voltage part is normal and the DC / DC does not work. It is judged that the DC / DC converter has an internal fault. Judge whether the DC / DC is faulty based on the displayed value.

[0040] Compared with the related art, the DC-DC detector provided by the utility model has the following beneficial effects:

[0041] The utility model provides a DC-DC detector. A high-voltage line adapter box 3, a wire clamp 4, a low-voltage power supply 5, a connector 6, a high-voltage ammeter 7, a low-voltage ammeter 8, a high-voltage voltmeter 9, a high-voltage switch 10 and a low-voltage switch 11 are respectively arranged on a detector body 1 with four connecting wires 2. When a DC / DC in a car fails, the fault can be directly eliminated and the position can be determined through the detector body 1, thereby improving the convenience and time consumed in bus maintenance.

[0042] Second embodiment

[0043] Please refer to Figure 3 Based on the DC-DC detector provided in the first embodiment of the present application, the second embodiment of the present application provides another DC-DC detector. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0044] Specifically, the difference of the DC-DC detector provided in the second embodiment of the present application is that, in a DC-DC detector, a protective component 13 is provided on the surface of the detector body 1, and the protective component 13 includes two fixed blocks 131, a fixed rod 132 is connected between the two fixed blocks 131, and a rotating frame 133 is provided on the surface of the two fixed rods 132.

[0045] The two fixed blocks 131 are symmetrically connected to one end of the detector body 1. The use of the rotating frame 133 facilitates the opening and closing of the protective cover 134. The protective cover 134 and the detector body 1 can be fixed by magnetic attraction. The shape of the protective cover 134 is adapted to the detector body 1, and the size is adapted to the protective cover 134. The protective cover 134 is made of acrylic material.

[0046] A protective cover 134 is connected between the two rotating frames 133 .

[0047] The working principle of a DC-DC detector provided by the utility model is as follows:

[0048] When the detector body 1 is not in use, the two rotating frames 133 on the surface of the fixing rod 132 drive the protective cover 134 to rotate until the protective cover 134 is rotated to be connected and fixed with the detector body 1 .

[0049] Compared with the related art, the DC-DC detector provided by the utility model has the following beneficial effects:

[0050] The utility model provides a DC-DC detector. A protection component 13 is arranged on the surface of a detector body 1. When the detector body 1 is not in use, a high-voltage ammeter 7, a low-voltage ammeter 8, a high-voltage voltmeter 9, a high-voltage switch 10, a low-voltage switch 11 and a power indicator light 12 on the surface of the detector body 1 can be protected to prevent damage caused by collision.

[0051] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A DC-DC detector, characterized in that: include: The detector body has four connecting wires at one end, and one end of the four connecting wires are respectively connected to a high-voltage line adapter box, a wire clamp, a low-voltage power supply and a connector; a high-voltage ammeter, a low-voltage ammeter, a high-voltage voltmeter, a high-voltage switch and a low-voltage switch are respectively arranged on the surface of the detector body.

2. The DC-DC detector according to claim 1, characterized in that: A power indicator light is arranged on the surface of the detector body.

3. The DC-DC detector according to claim 1, characterized in that: The high-voltage ammeter, the low-voltage ammeter and the high-voltage voltmeter are used for checking the numerical display.

4. The DC-DC detector according to claim 1, characterized in that: The low-voltage power supply is connected to the power distribution box in the rear compartment of the vehicle.

5. The DC-DC detector according to claim 1, characterized in that: The connector is used to connect with the vehicle body grounding wire.

6. The DC-DC detector according to claim 1, characterized in that: A protection component is arranged on the surface of the detector body. The protection component comprises two fixed blocks. A fixed rod is connected between the two fixed blocks. A rotating frame is sleeved on the surfaces of the two fixed rods.

7. The DC-DC detector according to claim 6, characterized in that: A protective cover is connected between the two rotating frames.

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