CN105337599A - Passenger vehicle charger debugging state switching device - Google Patents

Abstract

The invention relates to a debugging state switching device for a passenger car charger, which comprises a general circuit, a debugging state selection switch, a normal debugging state circuit and an analog debugging state circuit. This device uses a printed board as a carrier, uses common common components, is low in cost, and is easy to manufacture. It only needs to use one input power device, and the switch between the two debugging states can be realized by switching the switch. It does not need to frequently switch wiring and improve This not only improves the efficiency of production debugging, but also avoids wrong connections and missing connections during the wiring conversion process. The input voltage value is converted by adjusting the resistance value to meet the debugging requirements. Different colors of light-emitting diodes are lit under different debugging states to remind the staff more intuitively, so as to facilitate relevant tests for different states and prevent misoperation.

Description

A debugging state switching device for a passenger car charger

technical field

The invention relates to the field of rail passenger car charger testing, in particular to a debugging state switching device for a passenger car charger.

Background technique

The 25T/G railway car charger converts DC600V into DC110V through high-frequency conversion, provides floating charging source for the battery of the bus, and supplies power to other DC loads on the car at the same time. Before inputting DC600V for normal testing of various load conditions, the passenger car charger must first perform a test of the simulated state, that is, first give a voltage of about DC50V~DC100V at the input end of the original DC600V, and measure the voltage at the output end of the charger and the normal state. (Output DC110V) is proportional, and changes with the input voltage adjustment, and then switches to the normal state test. In this way, damage to the charger caused by direct high voltage transmission can be reduced, making it safer and more reliable. The DC600V power supply of the existing bus charger is connected by the DC power supply cabinet, and its minimum can only be adjusted to DC300V. Therefore, a DC110V DC stabilized power supply must be used for the simulation test, and the switching between the two debugging states must be affected by wiring conversion. Work efficiency, wiring errors are more likely to occur during frequent conversions, and there are certain potential safety hazards.

Contents of the invention

The technical problem to be solved by the present invention is: to overcome the above-mentioned deficiencies, to provide a debugging state switching device for a bus charger, which can simply and effectively switch between two debugging states.

The technical solution adopted by the present invention to solve the technical problem is: a bus charger debugging state switching device, which uses a printed board as a carrier, and includes a general circuit, a debugging state selection switch, a normal debugging state circuit, and an analog debugging state circuit.

The general circuit is composed of a resistor R, a diode D and a capacitor C. One end of the resistor R is connected to 600V+, one end of the parallel connection of the diode D and the capacitor C is connected to the other end of the resistor R, and the other end of the parallel connection of the diode D and the capacitor C is connected to 600V-. Resistor R is an ordinary plug-in resistor, diode D is a Zener diode, and capacitor C is a plug-in ceramic capacitor. All components are soldered to the carrier printed board.

The debugging state selection switch is connected in series with the general circuit, is composed of a switch S, is directly welded to the carrier printed board, and is divided into upper and lower channels. When the switch S is turned to the upper channel, the normal debugging state is selected; when the switch is turned to the lower channel, the simulated debugging state is selected.

The normal debugging state circuit is composed of a light emitting diode D1, the positive pole is connected to the upper channel of the debugging state selection switch, and the negative pole is connected to 600V-. The light-emitting diode D1 is a patch-type green light-emitting tube, which is directly welded to the carrier printed board.

The analog debugging state circuit is composed of resistors R1, R2 and light-emitting diode D2, which are connected in series with the lower channel part of the debugging state selection switch. The resistor R1 is an adjustable resistor, the resistor R2 is a soldering type, the light-emitting diode D2 is a patch-type red light-emitting tube, and the negative pole is connected to 600V-. All components are soldered to the carrier printed board.

The beneficial effects of the present invention are: the device uses a printed board as a carrier, uses common common components, is low in cost, and is easy to manufacture. It only needs to use one input power supply device, and the switch between the two debugging states can be realized by switching the switch. It does not need to switch wiring frequently, which improves the efficiency of production debugging and avoids wrong connection and missed connection during the wiring conversion process. The input voltage value is converted by adjusting the resistance value to meet the debugging requirements. Different colors of light-emitting diodes are lit under different debugging states to remind the staff more intuitively, so as to facilitate relevant tests for different states and prevent misoperation.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic circuit diagram of a debugging state switching device for a bus charger of the present invention.

Fig. 2 is an operation flow chart of a commissioning state switching device for a bus charger of the present invention.

In Figures 1 and 2: 1. General circuit, 2. Debug state selection switch, 3. Normal debug state circuit, 4. Analog debug state circuit.

detailed description

The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

Example

As shown in Figures 1 and 2, a debugging state switching device for a bus charger of the present invention includes a general circuit 1, a debugging state selection switch 2, a normal debugging state circuit 3, and an analog debugging state circuit 4.

The general circuit 1 is composed of a resistor R, a diode D and a capacitor C. One end of the resistor R is connected to 600V+, one end of the parallel connection of the diode D and the capacitor C is connected to the other end of the resistor R, and the other end of the parallel connection of the diode D and the capacitor C is connected to 600V-. Resistor R is an ordinary plug-in resistor, which acts as a current limiter to prevent excessive current burning of light-emitting diodes D1 and D2 in the normal debugging state circuit 3 and the analog debugging state circuit 4, thereby prolonging their service life. Diode D is a Zener diode, which acts as a voltage stabilizer. Capacitor C is a plug-in ceramic capacitor, which acts as a filter. All components are soldered to the carrier printed board.

The debugging state selection switch 2 is connected in series with the general circuit 1 and is composed of a switch S, which is directly welded to the carrier printed board and is divided into upper and lower channels. The switch between the two debugging states can be easily realized by flipping the switch. When the switch S is turned to the upper channel, the normal debugging state is selected; when the switch is turned to the lower channel, the simulated debugging state is selected.

The normal debugging state circuit 3 is composed of a light emitting diode D1, the positive pole is connected to the upper channel of the debugging state selection switch 2, and the negative pole is connected to 600V-. The light-emitting diode D1 is a patch-type green light-emitting tube, which is directly welded to the carrier printed board. When the debugging state selection switch 2 is turned to the upper channel, it will light up as a reminder of the normal debugging state, and it is not necessary to test the voltage of the input part separately to make a judgment.

The analog debugging state circuit 4 is composed of resistors R1, R2 and light-emitting diode D2, and is connected in series with the lower channel part of the debugging state selection switch 2. Resistors R1 and R2 form a voltage divider circuit, which reduces the DC600V high voltage to a low voltage value required for analog debugging. Resistor R1 is an adjustable resistor, and the low voltage value can be changed within the required range by adjusting its resistance value. Resistor R2 is solder type. The light-emitting diode D2 is a patch-type red light-emitting tube, and the negative pole is connected to 600V-. When the debugging state selection switch 2 is turned to the lower channel, it will light up as a reminder of the simulated debugging state. It is not necessary to test the voltage of the input part separately to make a judgment . All components are soldered to the carrier printed board.

This device uses a printed board as a carrier, uses common common components, is low in cost, and is easy to manufacture. It only needs to use one input power device, and the switch between the two debugging states can be realized by switching the switch. It does not need to frequently switch wiring and improve This not only improves the efficiency of production debugging, but also avoids wrong connections and missing connections during the wiring conversion process. In actual use, first turn the debugging state selection switch 2 to the lower channel, the analog debugging state circuit 4 will work, DC600V will be stepped down to the low voltage value required for analog debugging through resistor division, and the red light-emitting diode will light up to test the bus charger. Check whether the output is proportional to the normal test (output DC110V). Then adjust the resistance value of the adjustable resistor R1 to test whether the output of the bus charger is changed synchronously. After the simulation test is completed, turn the debugging state selection switch 2 to the upper channel, connect the normal debugging state circuit 3, and the green light-emitting diode is lit, and the normal various load conditions tests can be started.

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (1)

1. A passenger car charger debugging state switching device is characterized in that: it comprises a general circuit (1), a debugging state selection switch (2), a normal debugging state circuit (3) and an analog debugging state circuit (4); The general circuit (1) is composed of a resistor R, a diode D and a capacitor C; one end of the resistor R is connected to 600V+, one end of the diode D connected in parallel with the capacitor C is connected to the other end of the resistor R, and the diode D is connected in parallel with the capacitor C The other end of the terminal is connected to 600V-; the resistor R is an ordinary plug-in resistor, the diode D is a Zener diode, and the capacitor C is a plug-in ceramic capacitor, and all components are welded to the carrier printed board; The debugging state selection switch (2) is connected in series with the general circuit (1), is composed of a switch S, is directly welded to the carrier printed board, and is divided into upper and lower channels; The normal debugging state circuit (3) is composed of a light-emitting diode D1, the positive pole is connected to the upper channel of the debugging state selection switch (2), and the negative pole is connected to 600V-; the light-emitting diode D1 is a patch type light-emitting tube, which is directly welded to the carrier printed board; The analog debugging state circuit (4) is composed of resistors R1, R2 and light-emitting diode D2, and is connected in series with the lower channel part of the debugging state selection switch (2); Diode D2 is patch type, the negative pole is connected to 600V-; each component is welded to the carrier printed board; The resistor R in the general circuit (1) acts as a current limiter, preventing the light-emitting diodes D1 and D2 in the normal debugging state circuit (3) and the analog debugging state circuit (4) from burning out due to excessive current, prolonging their service life; Diode D acts as a regulator; capacitor C acts as a filter; When the debugging state selection switch (2) is dialed to the upper channel, the normal debugging state is selected; when it is dialed to the lower channel, the simulated debugging state is selected; In the normal debugging state circuit (3), when the debugging state selection switch (2) is dialed to the upper channel, the green light-emitting diode is lighted as a reminder of the normal debugging state, and it is not necessary to test the input part voltage separately to make a judgment; When the debugging state selection switch (2) in the analog debugging state circuit (3) is turned to the lower channel, the red light-emitting diode is lighted as a reminder of the analog debugging state, and no judgment is made after testing the voltage of the input part separately.